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agp: remove flush_agp_mappings calls from new flush handling code
[linux-2.6/linux-loongson.git] / drivers / char / agp / intel-agp.c
blobeeea50a1d22ace69991af91a7bcee524a4319e3e
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_G33_HB 0x29C0
30 #define PCI_DEVICE_ID_INTEL_G33_IG 0x29C2
31 #define PCI_DEVICE_ID_INTEL_Q35_HB 0x29B0
32 #define PCI_DEVICE_ID_INTEL_Q35_IG 0x29B2
33 #define PCI_DEVICE_ID_INTEL_Q33_HB 0x29D0
34 #define PCI_DEVICE_ID_INTEL_Q33_IG 0x29D2
35 #define PCI_DEVICE_ID_INTEL_IGD_HB 0x2A40
36 #define PCI_DEVICE_ID_INTEL_IGD_IG 0x2A42
37
38 /* cover 915 and 945 variants */
39 #define IS_I915 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_E7221_HB || \
40 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB || \
41 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB || \
42 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB || \
43 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || \
44 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GME_HB)
45
46 #define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
47 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82G35_HB || \
48 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
49 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB || \
50 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GM_HB || \
51 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965GME_HB || \
52 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_HB)
53
54 #define IS_G33 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_G33_HB || \
55 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q35_HB || \
56 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_Q33_HB)
57
58 extern int agp_memory_reserved;
59
60
61 /* Intel 815 register */
62 #define INTEL_815_APCONT 0x51
63 #define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF
64
65 /* Intel i820 registers */
66 #define INTEL_I820_RDCR 0x51
67 #define INTEL_I820_ERRSTS 0xc8
68
69 /* Intel i840 registers */
70 #define INTEL_I840_MCHCFG 0x50
71 #define INTEL_I840_ERRSTS 0xc8
72
73 /* Intel i850 registers */
74 #define INTEL_I850_MCHCFG 0x50
75 #define INTEL_I850_ERRSTS 0xc8
76
77 /* intel 915G registers */
78 #define I915_GMADDR 0x18
79 #define I915_MMADDR 0x10
80 #define I915_PTEADDR 0x1C
81 #define I915_GMCH_GMS_STOLEN_48M (0x6 << 4)
82 #define I915_GMCH_GMS_STOLEN_64M (0x7 << 4)
83 #define G33_GMCH_GMS_STOLEN_128M (0x8 << 4)
84 #define G33_GMCH_GMS_STOLEN_256M (0x9 << 4)
85 #define I915_IFPADDR 0x60
86
87 /* Intel 965G registers */
88 #define I965_MSAC 0x62
89 #define I965_IFPADDR 0x70
90
91 /* Intel 7505 registers */
92 #define INTEL_I7505_APSIZE 0x74
93 #define INTEL_I7505_NCAPID 0x60
94 #define INTEL_I7505_NISTAT 0x6c
95 #define INTEL_I7505_ATTBASE 0x78
96 #define INTEL_I7505_ERRSTS 0x42
97 #define INTEL_I7505_AGPCTRL 0x70
98 #define INTEL_I7505_MCHCFG 0x50
99
100 static const struct aper_size_info_fixed intel_i810_sizes[] =
101 {
102 {64, 16384, 4},
103 /* The 32M mode still requires a 64k gatt */
104 {32, 8192, 4}
105 };
106
107 #define AGP_DCACHE_MEMORY 1
108 #define AGP_PHYS_MEMORY 2
109 #define INTEL_AGP_CACHED_MEMORY 3
110
111 static struct gatt_mask intel_i810_masks[] =
112 {
113 {.mask = I810_PTE_VALID, .type = 0},
114 {.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
115 {.mask = I810_PTE_VALID, .type = 0},
116 {.mask = I810_PTE_VALID | I830_PTE_SYSTEM_CACHED,
117 .type = INTEL_AGP_CACHED_MEMORY}
118 };
119
120 static struct _intel_private {
121 struct pci_dev *pcidev; /* device one */
122 u8 __iomem *registers;
123 u32 __iomem *gtt; /* I915G */
124 int num_dcache_entries;
125 /* gtt_entries is the number of gtt entries that are already mapped
126 * to stolen memory. Stolen memory is larger than the memory mapped
127 * through gtt_entries, as it includes some reserved space for the BIOS
128 * popup and for the GTT.
129 */
130 int gtt_entries; /* i830+ */
131 union {
132 void __iomem *i9xx_flush_page;
133 void *i8xx_flush_page;
134 };
135 struct page *i8xx_page;
136 struct resource ifp_resource;
137 int resource_valid;
138 } intel_private;
139
140 static int intel_i810_fetch_size(void)
141 {
142 u32 smram_miscc;
143 struct aper_size_info_fixed *values;
144
145 pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
146 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
147
148 if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
149 printk(KERN_WARNING PFX "i810 is disabled\n");
150 return 0;
151 }
152 if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
153 agp_bridge->previous_size =
154 agp_bridge->current_size = (void *) (values + 1);
155 agp_bridge->aperture_size_idx = 1;
156 return values[1].size;
157 } else {
158 agp_bridge->previous_size =
159 agp_bridge->current_size = (void *) (values);
160 agp_bridge->aperture_size_idx = 0;
161 return values[0].size;
162 }
163
164 return 0;
165 }
166
167 static int intel_i810_configure(void)
168 {
169 struct aper_size_info_fixed *current_size;
170 u32 temp;
171 int i;
172
173 current_size = A_SIZE_FIX(agp_bridge->current_size);
174
175 if (!intel_private.registers) {
176 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
177 temp &= 0xfff80000;
178
179 intel_private.registers = ioremap(temp, 128 * 4096);
180 if (!intel_private.registers) {
181 printk(KERN_ERR PFX "Unable to remap memory.\n");
182 return -ENOMEM;
183 }
184 }
185
186 if ((readl(intel_private.registers+I810_DRAM_CTL)
187 & I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
188 /* This will need to be dynamically assigned */
189 printk(KERN_INFO PFX "detected 4MB dedicated video ram.\n");
190 intel_private.num_dcache_entries = 1024;
191 }
192 pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
193 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
194 writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
195 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
196
197 if (agp_bridge->driver->needs_scratch_page) {
198 for (i = 0; i < current_size->num_entries; i++) {
199 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
200 readl(intel_private.registers+I810_PTE_BASE+(i*4)); /* PCI posting. */
201 }
202 }
203 global_cache_flush();
204 return 0;
205 }
206
207 static void intel_i810_cleanup(void)
208 {
209 writel(0, intel_private.registers+I810_PGETBL_CTL);
210 readl(intel_private.registers); /* PCI Posting. */
211 iounmap(intel_private.registers);
212 }
213
214 static void intel_i810_tlbflush(struct agp_memory *mem)
215 {
216 return;
217 }
218
219 static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
220 {
221 return;
222 }
223
224 /* Exists to support ARGB cursors */
225 static void *i8xx_alloc_pages(void)
226 {
227 struct page *page;
228
229 page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
230 if (page == NULL)
231 return NULL;
232
233 if (set_pages_uc(page, 4) < 0) {
234 set_pages_wb(page, 4);
235 __free_pages(page, 2);
236 return NULL;
237 }
238 get_page(page);
239 atomic_inc(&agp_bridge->current_memory_agp);
240 return page_address(page);
241 }
242
243 static void i8xx_destroy_pages(void *addr)
244 {
245 struct page *page;
246
247 if (addr == NULL)
248 return;
249
250 page = virt_to_page(addr);
251 set_pages_wb(page, 4);
252 put_page(page);
253 __free_pages(page, 2);
254 atomic_dec(&agp_bridge->current_memory_agp);
255 }
256
257 static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge,
258 int type)
259 {
260 if (type < AGP_USER_TYPES)
261 return type;
262 else if (type == AGP_USER_CACHED_MEMORY)
263 return INTEL_AGP_CACHED_MEMORY;
264 else
265 return 0;
266 }
267
268 static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
269 int type)
270 {
271 int i, j, num_entries;
272 void *temp;
273 int ret = -EINVAL;
274 int mask_type;
275
276 if (mem->page_count == 0)
277 goto out;
278
279 temp = agp_bridge->current_size;
280 num_entries = A_SIZE_FIX(temp)->num_entries;
281
282 if ((pg_start + mem->page_count) > num_entries)
283 goto out_err;
284
285
286 for (j = pg_start; j < (pg_start + mem->page_count); j++) {
287 if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j))) {
288 ret = -EBUSY;
289 goto out_err;
290 }
291 }
292
293 if (type != mem->type)
294 goto out_err;
295
296 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
297
298 switch (mask_type) {
299 case AGP_DCACHE_MEMORY:
300 if (!mem->is_flushed)
301 global_cache_flush();
302 for (i = pg_start; i < (pg_start + mem->page_count); i++) {
303 writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID,
304 intel_private.registers+I810_PTE_BASE+(i*4));
305 }
306 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
307 break;
308 case AGP_PHYS_MEMORY:
309 case AGP_NORMAL_MEMORY:
310 if (!mem->is_flushed)
311 global_cache_flush();
312 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
313 writel(agp_bridge->driver->mask_memory(agp_bridge,
314 mem->memory[i],
315 mask_type),
316 intel_private.registers+I810_PTE_BASE+(j*4));
317 }
318 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
319 break;
320 default:
321 goto out_err;
322 }
323
324 agp_bridge->driver->tlb_flush(mem);
325 out:
326 ret = 0;
327 out_err:
328 mem->is_flushed = 1;
329 return ret;
330 }
331
332 static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
333 int type)
334 {
335 int i;
336
337 if (mem->page_count == 0)
338 return 0;
339
340 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
341 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
342 }
343 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
344
345 agp_bridge->driver->tlb_flush(mem);
346 return 0;
347 }
348
349 /*
350 * The i810/i830 requires a physical address to program its mouse
351 * pointer into hardware.
352 * However the Xserver still writes to it through the agp aperture.
353 */
354 static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
355 {
356 struct agp_memory *new;
357 void *addr;
358
359 switch (pg_count) {
360 case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge);
361 break;
362 case 4:
363 /* kludge to get 4 physical pages for ARGB cursor */
364 addr = i8xx_alloc_pages();
365 break;
366 default:
367 return NULL;
368 }
369
370 if (addr == NULL)
371 return NULL;
372
373 new = agp_create_memory(pg_count);
374 if (new == NULL)
375 return NULL;
376
377 new->memory[0] = virt_to_gart(addr);
378 if (pg_count == 4) {
379 /* kludge to get 4 physical pages for ARGB cursor */
380 new->memory[1] = new->memory[0] + PAGE_SIZE;
381 new->memory[2] = new->memory[1] + PAGE_SIZE;
382 new->memory[3] = new->memory[2] + PAGE_SIZE;
383 }
384 new->page_count = pg_count;
385 new->num_scratch_pages = pg_count;
386 new->type = AGP_PHYS_MEMORY;
387 new->physical = new->memory[0];
388 return new;
389 }
390
391 static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
392 {
393 struct agp_memory *new;
394
395 if (type == AGP_DCACHE_MEMORY) {
396 if (pg_count != intel_private.num_dcache_entries)
397 return NULL;
398
399 new = agp_create_memory(1);
400 if (new == NULL)
401 return NULL;
402
403 new->type = AGP_DCACHE_MEMORY;
404 new->page_count = pg_count;
405 new->num_scratch_pages = 0;
406 agp_free_page_array(new);
407 return new;
408 }
409 if (type == AGP_PHYS_MEMORY)
410 return alloc_agpphysmem_i8xx(pg_count, type);
411 return NULL;
412 }
413
414 static void intel_i810_free_by_type(struct agp_memory *curr)
415 {
416 agp_free_key(curr->key);
417 if (curr->type == AGP_PHYS_MEMORY) {
418 if (curr->page_count == 4)
419 i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
420 else {
421 agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[0]),
422 AGP_PAGE_DESTROY_UNMAP);
423 agp_bridge->driver->agp_destroy_page(gart_to_virt(curr->memory[0]),
424 AGP_PAGE_DESTROY_FREE);
425 }
426 agp_free_page_array(curr);
427 }
428 kfree(curr);
429 }
430
431 static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
432 unsigned long addr, int type)
433 {
434 /* Type checking must be done elsewhere */
435 return addr | bridge->driver->masks[type].mask;
436 }
437
438 static struct aper_size_info_fixed intel_i830_sizes[] =
439 {
440 {128, 32768, 5},
441 /* The 64M mode still requires a 128k gatt */
442 {64, 16384, 5},
443 {256, 65536, 6},
444 {512, 131072, 7},
445 };
446
447 static void intel_i830_init_gtt_entries(void)
448 {
449 u16 gmch_ctrl;
450 int gtt_entries;
451 u8 rdct;
452 int local = 0;
453 static const int ddt[4] = { 0, 16, 32, 64 };
454 int size; /* reserved space (in kb) at the top of stolen memory */
455
456 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
457
458 if (IS_I965) {
459 u32 pgetbl_ctl;
460 pgetbl_ctl = readl(intel_private.registers+I810_PGETBL_CTL);
461
462 /* The 965 has a field telling us the size of the GTT,
463 * which may be larger than what is necessary to map the
464 * aperture.
465 */
466 switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
467 case I965_PGETBL_SIZE_128KB:
468 size = 128;
469 break;
470 case I965_PGETBL_SIZE_256KB:
471 size = 256;
472 break;
473 case I965_PGETBL_SIZE_512KB:
474 size = 512;
475 break;
476 case I965_PGETBL_SIZE_1MB:
477 size = 1024;
478 break;
479 case I965_PGETBL_SIZE_2MB:
480 size = 2048;
481 break;
482 case I965_PGETBL_SIZE_1_5MB:
483 size = 1024 + 512;
484 break;
485 default:
486 printk(KERN_INFO PFX "Unknown page table size, "
487 "assuming 512KB\n");
488 size = 512;
489 }
490 size += 4; /* add in BIOS popup space */
491 } else if (IS_G33) {
492 /* G33's GTT size defined in gmch_ctrl */
493 switch (gmch_ctrl & G33_PGETBL_SIZE_MASK) {
494 case G33_PGETBL_SIZE_1M:
495 size = 1024;
496 break;
497 case G33_PGETBL_SIZE_2M:
498 size = 2048;
499 break;
500 default:
501 printk(KERN_INFO PFX "Unknown page table size 0x%x, "
502 "assuming 512KB\n",
503 (gmch_ctrl & G33_PGETBL_SIZE_MASK));
504 size = 512;
505 }
506 size += 4;
507 } else {
508 /* On previous hardware, the GTT size was just what was
509 * required to map the aperture.
510 */
511 size = agp_bridge->driver->fetch_size() + 4;
512 }
513
514 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
515 agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
516 switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
517 case I830_GMCH_GMS_STOLEN_512:
518 gtt_entries = KB(512) - KB(size);
519 break;
520 case I830_GMCH_GMS_STOLEN_1024:
521 gtt_entries = MB(1) - KB(size);
522 break;
523 case I830_GMCH_GMS_STOLEN_8192:
524 gtt_entries = MB(8) - KB(size);
525 break;
526 case I830_GMCH_GMS_LOCAL:
527 rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE);
528 gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
529 MB(ddt[I830_RDRAM_DDT(rdct)]);
530 local = 1;
531 break;
532 default:
533 gtt_entries = 0;
534 break;
535 }
536 } else {
537 switch (gmch_ctrl & I855_GMCH_GMS_MASK) {
538 case I855_GMCH_GMS_STOLEN_1M:
539 gtt_entries = MB(1) - KB(size);
540 break;
541 case I855_GMCH_GMS_STOLEN_4M:
542 gtt_entries = MB(4) - KB(size);
543 break;
544 case I855_GMCH_GMS_STOLEN_8M:
545 gtt_entries = MB(8) - KB(size);
546 break;
547 case I855_GMCH_GMS_STOLEN_16M:
548 gtt_entries = MB(16) - KB(size);
549 break;
550 case I855_GMCH_GMS_STOLEN_32M:
551 gtt_entries = MB(32) - KB(size);
552 break;
553 case I915_GMCH_GMS_STOLEN_48M:
554 /* Check it's really I915G */
555 if (IS_I915 || IS_I965 || IS_G33)
556 gtt_entries = MB(48) - KB(size);
557 else
558 gtt_entries = 0;
559 break;
560 case I915_GMCH_GMS_STOLEN_64M:
561 /* Check it's really I915G */
562 if (IS_I915 || IS_I965 || IS_G33)
563 gtt_entries = MB(64) - KB(size);
564 else
565 gtt_entries = 0;
566 break;
567 case G33_GMCH_GMS_STOLEN_128M:
568 if (IS_G33)
569 gtt_entries = MB(128) - KB(size);
570 else
571 gtt_entries = 0;
572 break;
573 case G33_GMCH_GMS_STOLEN_256M:
574 if (IS_G33)
575 gtt_entries = MB(256) - KB(size);
576 else
577 gtt_entries = 0;
578 break;
579 default:
580 gtt_entries = 0;
581 break;
582 }
583 }
584 if (gtt_entries > 0)
585 printk(KERN_INFO PFX "Detected %dK %s memory.\n",
586 gtt_entries / KB(1), local ? "local" : "stolen");
587 else
588 printk(KERN_INFO PFX
589 "No pre-allocated video memory detected.\n");
590 gtt_entries /= KB(4);
591
592 intel_private.gtt_entries = gtt_entries;
593 }
594
595 static void intel_i830_fini_flush(void)
596 {
597 kunmap(intel_private.i8xx_page);
598 intel_private.i8xx_flush_page = NULL;
599 unmap_page_from_agp(intel_private.i8xx_page);
600
601 __free_page(intel_private.i8xx_page);
602 intel_private.i8xx_page = NULL;
603 }
604
605 static void intel_i830_setup_flush(void)
606 {
607 /* return if we've already set the flush mechanism up */
608 if (intel_private.i8xx_page)
609 return;
610
611 intel_private.i8xx_page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
612 if (!intel_private.i8xx_page)
613 return;
614
615 /* make page uncached */
616 map_page_into_agp(intel_private.i8xx_page);
617
618 intel_private.i8xx_flush_page = kmap(intel_private.i8xx_page);
619 if (!intel_private.i8xx_flush_page)
620 intel_i830_fini_flush();
621 }
622
623 static void intel_i830_chipset_flush(struct agp_bridge_data *bridge)
624 {
625 unsigned int *pg = intel_private.i8xx_flush_page;
626 int i;
627
628 for (i = 0; i < 256; i += 2)
629 *(pg + i) = i;
630
631 wmb();
632 }
633
634 /* The intel i830 automatically initializes the agp aperture during POST.
635 * Use the memory already set aside for in the GTT.
636 */
637 static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
638 {
639 int page_order;
640 struct aper_size_info_fixed *size;
641 int num_entries;
642 u32 temp;
643
644 size = agp_bridge->current_size;
645 page_order = size->page_order;
646 num_entries = size->num_entries;
647 agp_bridge->gatt_table_real = NULL;
648
649 pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
650 temp &= 0xfff80000;
651
652 intel_private.registers = ioremap(temp, 128 * 4096);
653 if (!intel_private.registers)
654 return -ENOMEM;
655
656 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
657 global_cache_flush(); /* FIXME: ?? */
658
659 /* we have to call this as early as possible after the MMIO base address is known */
660 intel_i830_init_gtt_entries();
661
662 agp_bridge->gatt_table = NULL;
663
664 agp_bridge->gatt_bus_addr = temp;
665
666 return 0;
667 }
668
669 /* Return the gatt table to a sane state. Use the top of stolen
670 * memory for the GTT.
671 */
672 static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
673 {
674 return 0;
675 }
676
677 static int intel_i830_fetch_size(void)
678 {
679 u16 gmch_ctrl;
680 struct aper_size_info_fixed *values;
681
682 values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
683
684 if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
685 agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
686 /* 855GM/852GM/865G has 128MB aperture size */
687 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
688 agp_bridge->aperture_size_idx = 0;
689 return values[0].size;
690 }
691
692 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
693
694 if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
695 agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
696 agp_bridge->aperture_size_idx = 0;
697 return values[0].size;
698 } else {
699 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
700 agp_bridge->aperture_size_idx = 1;
701 return values[1].size;
702 }
703
704 return 0;
705 }
706
707 static int intel_i830_configure(void)
708 {
709 struct aper_size_info_fixed *current_size;
710 u32 temp;
711 u16 gmch_ctrl;
712 int i;
713
714 current_size = A_SIZE_FIX(agp_bridge->current_size);
715
716 pci_read_config_dword(intel_private.pcidev, I810_GMADDR, &temp);
717 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
718
719 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
720 gmch_ctrl |= I830_GMCH_ENABLED;
721 pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
722
723 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
724 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
725
726 if (agp_bridge->driver->needs_scratch_page) {
727 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
728 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
729 readl(intel_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
730 }
731 }
732
733 global_cache_flush();
734
735 intel_i830_setup_flush();
736 return 0;
737 }
738
739 static void intel_i830_cleanup(void)
740 {
741 iounmap(intel_private.registers);
742 }
743
744 static int intel_i830_insert_entries(struct agp_memory *mem, off_t pg_start,
745 int type)
746 {
747 int i, j, num_entries;
748 void *temp;
749 int ret = -EINVAL;
750 int mask_type;
751
752 if (mem->page_count == 0)
753 goto out;
754
755 temp = agp_bridge->current_size;
756 num_entries = A_SIZE_FIX(temp)->num_entries;
757
758 if (pg_start < intel_private.gtt_entries) {
759 printk(KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
760 pg_start, intel_private.gtt_entries);
761
762 printk(KERN_INFO PFX "Trying to insert into local/stolen memory\n");
763 goto out_err;
764 }
765
766 if ((pg_start + mem->page_count) > num_entries)
767 goto out_err;
768
769 /* The i830 can't check the GTT for entries since its read only,
770 * depend on the caller to make the correct offset decisions.
771 */
772
773 if (type != mem->type)
774 goto out_err;
775
776 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
777
778 if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
779 mask_type != INTEL_AGP_CACHED_MEMORY)
780 goto out_err;
781
782 if (!mem->is_flushed)
783 global_cache_flush();
784
785 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
786 writel(agp_bridge->driver->mask_memory(agp_bridge,
787 mem->memory[i], mask_type),
788 intel_private.registers+I810_PTE_BASE+(j*4));
789 }
790 readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
791 agp_bridge->driver->tlb_flush(mem);
792
793 out:
794 ret = 0;
795 out_err:
796 mem->is_flushed = 1;
797 return ret;
798 }
799
800 static int intel_i830_remove_entries(struct agp_memory *mem, off_t pg_start,
801 int type)
802 {
803 int i;
804
805 if (mem->page_count == 0)
806 return 0;
807
808 if (pg_start < intel_private.gtt_entries) {
809 printk(KERN_INFO PFX "Trying to disable local/stolen memory\n");
810 return -EINVAL;
811 }
812
813 for (i = pg_start; i < (mem->page_count + pg_start); i++) {
814 writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
815 }
816 readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
817
818 agp_bridge->driver->tlb_flush(mem);
819 return 0;
820 }
821
822 static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count, int type)
823 {
824 if (type == AGP_PHYS_MEMORY)
825 return alloc_agpphysmem_i8xx(pg_count, type);
826 /* always return NULL for other allocation types for now */
827 return NULL;
828 }
829
830 static int intel_alloc_chipset_flush_resource(void)
831 {
832 int ret;
833 ret = pci_bus_alloc_resource(agp_bridge->dev->bus, &intel_private.ifp_resource, PAGE_SIZE,
834 PAGE_SIZE, PCIBIOS_MIN_MEM, 0,
835 pcibios_align_resource, agp_bridge->dev);
836
837 return ret;
838 }
839
840 static void intel_i915_setup_chipset_flush(void)
841 {
842 int ret;
843 u32 temp;
844
845 pci_read_config_dword(agp_bridge->dev, I915_IFPADDR, &temp);
846 if (!(temp & 0x1)) {
847 intel_alloc_chipset_flush_resource();
848 intel_private.resource_valid = 1;
849 pci_write_config_dword(agp_bridge->dev, I915_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
850 } else {
851 temp &= ~1;
852
853 intel_private.resource_valid = 1;
854 intel_private.ifp_resource.start = temp;
855 intel_private.ifp_resource.end = temp + PAGE_SIZE;
856 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
857 /* some BIOSes reserve this area in a pnp some don't */
858 if (ret)
859 intel_private.resource_valid = 0;
860 }
861 }
862
863 static void intel_i965_g33_setup_chipset_flush(void)
864 {
865 u32 temp_hi, temp_lo;
866 int ret;
867
868 pci_read_config_dword(agp_bridge->dev, I965_IFPADDR + 4, &temp_hi);
869 pci_read_config_dword(agp_bridge->dev, I965_IFPADDR, &temp_lo);
870
871 if (!(temp_lo & 0x1)) {
872
873 intel_alloc_chipset_flush_resource();
874
875 intel_private.resource_valid = 1;
876 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR + 4,
877 upper_32_bits(intel_private.ifp_resource.start));
878 pci_write_config_dword(agp_bridge->dev, I965_IFPADDR, (intel_private.ifp_resource.start & 0xffffffff) | 0x1);
879 } else {
880 u64 l64;
881
882 temp_lo &= ~0x1;
883 l64 = ((u64)temp_hi << 32) | temp_lo;
884
885 intel_private.resource_valid = 1;
886 intel_private.ifp_resource.start = l64;
887 intel_private.ifp_resource.end = l64 + PAGE_SIZE;
888 ret = request_resource(&iomem_resource, &intel_private.ifp_resource);
889 /* some BIOSes reserve this area in a pnp some don't */
890 if (ret)
891 intel_private.resource_valid = 0;
892 }
893 }
894
895 static void intel_i9xx_setup_flush(void)
896 {
897 /* return if already configured */
898 if (intel_private.ifp_resource.start)
899 return;
900
901 /* setup a resource for this object */
902 intel_private.ifp_resource.name = "Intel Flush Page";
903 intel_private.ifp_resource.flags = IORESOURCE_MEM;
904
905 /* Setup chipset flush for 915 */
906 if (IS_I965 || IS_G33) {
907 intel_i965_g33_setup_chipset_flush();
908 } else {
909 intel_i915_setup_chipset_flush();
910 }
911
912 if (intel_private.ifp_resource.start) {
913 intel_private.i9xx_flush_page = ioremap_nocache(intel_private.ifp_resource.start, PAGE_SIZE);
914 if (!intel_private.i9xx_flush_page)
915 printk(KERN_INFO "unable to ioremap flush page - no chipset flushing");
916 }
917 }
918
919 static int intel_i915_configure(void)
920 {
921 struct aper_size_info_fixed *current_size;
922 u32 temp;
923 u16 gmch_ctrl;
924 int i;
925
926 current_size = A_SIZE_FIX(agp_bridge->current_size);
927
928 pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp);
929
930 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
931
932 pci_read_config_word(agp_bridge->dev, I830_GMCH_CTRL, &gmch_ctrl);
933 gmch_ctrl |= I830_GMCH_ENABLED;
934 pci_write_config_word(agp_bridge->dev, I830_GMCH_CTRL, gmch_ctrl);
935
936 writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
937 readl(intel_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
938
939 if (agp_bridge->driver->needs_scratch_page) {
940 for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
941 writel(agp_bridge->scratch_page, intel_private.gtt+i);
942 readl(intel_private.gtt+i); /* PCI Posting. */
943 }
944 }
945
946 global_cache_flush();
947
948 intel_i9xx_setup_flush();
949
950 return 0;
951 }
952
953 static void intel_i915_cleanup(void)
954 {
955 if (intel_private.i9xx_flush_page)
956 iounmap(intel_private.i9xx_flush_page);
957 if (intel_private.resource_valid)
958 release_resource(&intel_private.ifp_resource);
959 intel_private.ifp_resource.start = 0;
960 intel_private.resource_valid = 0;
961 iounmap(intel_private.gtt);
962 iounmap(intel_private.registers);
963 }
964
965 static void intel_i915_chipset_flush(struct agp_bridge_data *bridge)
966 {
967 if (intel_private.i9xx_flush_page)
968 writel(1, intel_private.i9xx_flush_page);
969 }
970
971 static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start,
972 int type)
973 {
974 int i, j, num_entries;
975 void *temp;
976 int ret = -EINVAL;
977 int mask_type;
978
979 if (mem->page_count == 0)
980 goto out;
981
982 temp = agp_bridge->current_size;
983 num_entries = A_SIZE_FIX(temp)->num_entries;
984
985 if (pg_start < intel_private.gtt_entries) {
986 printk(KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
987 pg_start, intel_private.gtt_entries);
988
989 printk(KERN_INFO PFX "Trying to insert into local/stolen memory\n");
990 goto out_err;
991 }
992
993 if ((pg_start + mem->page_count) > num_entries)
994 goto out_err;
995
996 /* The i915 can't check the GTT for entries since its read only,
997 * depend on the caller to make the correct offset decisions.
998 */
999
1000 if (type != mem->type)
1001 goto out_err;
1002
1003 mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type);
1004
1005 if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY &&
1006 mask_type != INTEL_AGP_CACHED_MEMORY)
1007 goto out_err;
1008
1009 if (!mem->is_flushed)
1010 global_cache_flush();
1011
1012 for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
1013 writel(agp_bridge->driver->mask_memory(agp_bridge,
1014 mem->memory[i], mask_type), intel_private.gtt+j);
1015 }
1016
1017 readl(intel_private.gtt+j-1);
1018 agp_bridge->driver->tlb_flush(mem);
1019
1020 out:
1021 ret = 0;
1022 out_err:
1023 mem->is_flushed = 1;
1024 return ret;
1025 }
1026
1027 static int intel_i915_remove_entries(struct agp_memory *mem, off_t pg_start,
1028 int type)
1029 {
1030 int i;
1031
1032 if (mem->page_count == 0)
1033 return 0;
1034
1035 if (pg_start < intel_private.gtt_entries) {
1036 printk(KERN_INFO PFX "Trying to disable local/stolen memory\n");
1037 return -EINVAL;
1038 }
1039
1040 for (i = pg_start; i < (mem->page_count + pg_start); i++)
1041 writel(agp_bridge->scratch_page, intel_private.gtt+i);
1042
1043 readl(intel_private.gtt+i-1);
1044
1045 agp_bridge->driver->tlb_flush(mem);
1046 return 0;
1047 }
1048
1049 /* Return the aperture size by just checking the resource length. The effect
1050 * described in the spec of the MSAC registers is just changing of the
1051 * resource size.
1052 */
1053 static int intel_i9xx_fetch_size(void)
1054 {
1055 int num_sizes = ARRAY_SIZE(intel_i830_sizes);
1056 int aper_size; /* size in megabytes */
1057 int i;
1058
1059 aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1);
1060
1061 for (i = 0; i < num_sizes; i++) {
1062 if (aper_size == intel_i830_sizes[i].size) {
1063 agp_bridge->current_size = intel_i830_sizes + i;
1064 agp_bridge->previous_size = agp_bridge->current_size;
1065 return aper_size;
1066 }
1067 }
1068
1069 return 0;
1070 }
1071
1072 /* The intel i915 automatically initializes the agp aperture during POST.
1073 * Use the memory already set aside for in the GTT.
1074 */
1075 static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
1076 {
1077 int page_order;
1078 struct aper_size_info_fixed *size;
1079 int num_entries;
1080 u32 temp, temp2;
1081 int gtt_map_size = 256 * 1024;
1082
1083 size = agp_bridge->current_size;
1084 page_order = size->page_order;
1085 num_entries = size->num_entries;
1086 agp_bridge->gatt_table_real = NULL;
1087
1088 pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1089 pci_read_config_dword(intel_private.pcidev, I915_PTEADDR, &temp2);
1090
1091 if (IS_G33)
1092 gtt_map_size = 1024 * 1024; /* 1M on G33 */
1093 intel_private.gtt = ioremap(temp2, gtt_map_size);
1094 if (!intel_private.gtt)
1095 return -ENOMEM;
1096
1097 temp &= 0xfff80000;
1098
1099 intel_private.registers = ioremap(temp, 128 * 4096);
1100 if (!intel_private.registers) {
1101 iounmap(intel_private.gtt);
1102 return -ENOMEM;
1103 }
1104
1105 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1106 global_cache_flush(); /* FIXME: ? */
1107
1108 /* we have to call this as early as possible after the MMIO base address is known */
1109 intel_i830_init_gtt_entries();
1110
1111 agp_bridge->gatt_table = NULL;
1112
1113 agp_bridge->gatt_bus_addr = temp;
1114
1115 return 0;
1116 }
1117
1118 /*
1119 * The i965 supports 36-bit physical addresses, but to keep
1120 * the format of the GTT the same, the bits that don't fit
1121 * in a 32-bit word are shifted down to bits 4..7.
1122 *
1123 * Gcc is smart enough to notice that "(addr >> 28) & 0xf0"
1124 * is always zero on 32-bit architectures, so no need to make
1125 * this conditional.
1126 */
1127 static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
1128 unsigned long addr, int type)
1129 {
1130 /* Shift high bits down */
1131 addr |= (addr >> 28) & 0xf0;
1132
1133 /* Type checking must be done elsewhere */
1134 return addr | bridge->driver->masks[type].mask;
1135 }
1136
1137 /* The intel i965 automatically initializes the agp aperture during POST.
1138 * Use the memory already set aside for in the GTT.
1139 */
1140 static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
1141 {
1142 int page_order;
1143 struct aper_size_info_fixed *size;
1144 int num_entries;
1145 u32 temp;
1146 int gtt_offset, gtt_size;
1147
1148 size = agp_bridge->current_size;
1149 page_order = size->page_order;
1150 num_entries = size->num_entries;
1151 agp_bridge->gatt_table_real = NULL;
1152
1153 pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
1154
1155 temp &= 0xfff00000;
1156
1157 if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_IGD_HB)
1158 gtt_offset = gtt_size = MB(2);
1159 else
1160 gtt_offset = gtt_size = KB(512);
1161
1162 intel_private.gtt = ioremap((temp + gtt_offset) , gtt_size);
1163
1164 if (!intel_private.gtt)
1165 return -ENOMEM;
1166
1167 intel_private.registers = ioremap(temp, 128 * 4096);
1168 if (!intel_private.registers) {
1169 iounmap(intel_private.gtt);
1170 return -ENOMEM;
1171 }
1172
1173 temp = readl(intel_private.registers+I810_PGETBL_CTL) & 0xfffff000;
1174 global_cache_flush(); /* FIXME: ? */
1175
1176 /* we have to call this as early as possible after the MMIO base address is known */
1177 intel_i830_init_gtt_entries();
1178
1179 agp_bridge->gatt_table = NULL;
1180
1181 agp_bridge->gatt_bus_addr = temp;
1182
1183 return 0;
1184 }
1185
1186
1187 static int intel_fetch_size(void)
1188 {
1189 int i;
1190 u16 temp;
1191 struct aper_size_info_16 *values;
1192
1193 pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
1194 values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
1195
1196 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1197 if (temp == values[i].size_value) {
1198 agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
1199 agp_bridge->aperture_size_idx = i;
1200 return values[i].size;
1201 }
1202 }
1203
1204 return 0;
1205 }
1206
1207 static int __intel_8xx_fetch_size(u8 temp)
1208 {
1209 int i;
1210 struct aper_size_info_8 *values;
1211
1212 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
1213
1214 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
1215 if (temp == values[i].size_value) {
1216 agp_bridge->previous_size =
1217 agp_bridge->current_size = (void *) (values + i);
1218 agp_bridge->aperture_size_idx = i;
1219 return values[i].size;
1220 }
1221 }
1222 return 0;
1223 }
1224
1225 static int intel_8xx_fetch_size(void)
1226 {
1227 u8 temp;
1228
1229 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1230 return __intel_8xx_fetch_size(temp);
1231 }
1232
1233 static int intel_815_fetch_size(void)
1234 {
1235 u8 temp;
1236
1237 /* Intel 815 chipsets have a _weird_ APSIZE register with only
1238 * one non-reserved bit, so mask the others out ... */
1239 pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
1240 temp &= (1 << 3);
1241
1242 return __intel_8xx_fetch_size(temp);
1243 }
1244
1245 static void intel_tlbflush(struct agp_memory *mem)
1246 {
1247 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
1248 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1249 }
1250
1251
1252 static void intel_8xx_tlbflush(struct agp_memory *mem)
1253 {
1254 u32 temp;
1255 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1256 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
1257 pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
1258 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
1259 }
1260
1261
1262 static void intel_cleanup(void)
1263 {
1264 u16 temp;
1265 struct aper_size_info_16 *previous_size;
1266
1267 previous_size = A_SIZE_16(agp_bridge->previous_size);
1268 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1269 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1270 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1271 }
1272
1273
1274 static void intel_8xx_cleanup(void)
1275 {
1276 u16 temp;
1277 struct aper_size_info_8 *previous_size;
1278
1279 previous_size = A_SIZE_8(agp_bridge->previous_size);
1280 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
1281 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
1282 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
1283 }
1284
1285
1286 static int intel_configure(void)
1287 {
1288 u32 temp;
1289 u16 temp2;
1290 struct aper_size_info_16 *current_size;
1291
1292 current_size = A_SIZE_16(agp_bridge->current_size);
1293
1294 /* aperture size */
1295 pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1296
1297 /* address to map to */
1298 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1299 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1300
1301 /* attbase - aperture base */
1302 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1303
1304 /* agpctrl */
1305 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
1306
1307 /* paccfg/nbxcfg */
1308 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1309 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
1310 (temp2 & ~(1 << 10)) | (1 << 9));
1311 /* clear any possible error conditions */
1312 pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
1313 return 0;
1314 }
1315
1316 static int intel_815_configure(void)
1317 {
1318 u32 temp, addr;
1319 u8 temp2;
1320 struct aper_size_info_8 *current_size;
1321
1322 /* attbase - aperture base */
1323 /* the Intel 815 chipset spec. says that bits 29-31 in the
1324 * ATTBASE register are reserved -> try not to write them */
1325 if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
1326 printk(KERN_EMERG PFX "gatt bus addr too high");
1327 return -EINVAL;
1328 }
1329
1330 current_size = A_SIZE_8(agp_bridge->current_size);
1331
1332 /* aperture size */
1333 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1334 current_size->size_value);
1335
1336 /* address to map to */
1337 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1338 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1339
1340 pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
1341 addr &= INTEL_815_ATTBASE_MASK;
1342 addr |= agp_bridge->gatt_bus_addr;
1343 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
1344
1345 /* agpctrl */
1346 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1347
1348 /* apcont */
1349 pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
1350 pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
1351
1352 /* clear any possible error conditions */
1353 /* Oddness : this chipset seems to have no ERRSTS register ! */
1354 return 0;
1355 }
1356
1357 static void intel_820_tlbflush(struct agp_memory *mem)
1358 {
1359 return;
1360 }
1361
1362 static void intel_820_cleanup(void)
1363 {
1364 u8 temp;
1365 struct aper_size_info_8 *previous_size;
1366
1367 previous_size = A_SIZE_8(agp_bridge->previous_size);
1368 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
1369 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
1370 temp & ~(1 << 1));
1371 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
1372 previous_size->size_value);
1373 }
1374
1375
1376 static int intel_820_configure(void)
1377 {
1378 u32 temp;
1379 u8 temp2;
1380 struct aper_size_info_8 *current_size;
1381
1382 current_size = A_SIZE_8(agp_bridge->current_size);
1383
1384 /* aperture size */
1385 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1386
1387 /* address to map to */
1388 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1389 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1390
1391 /* attbase - aperture base */
1392 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1393
1394 /* agpctrl */
1395 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1396
1397 /* global enable aperture access */
1398 /* This flag is not accessed through MCHCFG register as in */
1399 /* i850 chipset. */
1400 pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
1401 pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
1402 /* clear any possible AGP-related error conditions */
1403 pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
1404 return 0;
1405 }
1406
1407 static int intel_840_configure(void)
1408 {
1409 u32 temp;
1410 u16 temp2;
1411 struct aper_size_info_8 *current_size;
1412
1413 current_size = A_SIZE_8(agp_bridge->current_size);
1414
1415 /* aperture size */
1416 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1417
1418 /* address to map to */
1419 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1420 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1421
1422 /* attbase - aperture base */
1423 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1424
1425 /* agpctrl */
1426 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1427
1428 /* mcgcfg */
1429 pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
1430 pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
1431 /* clear any possible error conditions */
1432 pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
1433 return 0;
1434 }
1435
1436 static int intel_845_configure(void)
1437 {
1438 u32 temp;
1439 u8 temp2;
1440 struct aper_size_info_8 *current_size;
1441
1442 current_size = A_SIZE_8(agp_bridge->current_size);
1443
1444 /* aperture size */
1445 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1446
1447 if (agp_bridge->apbase_config != 0) {
1448 pci_write_config_dword(agp_bridge->dev, AGP_APBASE,
1449 agp_bridge->apbase_config);
1450 } else {
1451 /* address to map to */
1452 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1453 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1454 agp_bridge->apbase_config = temp;
1455 }
1456
1457 /* attbase - aperture base */
1458 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1459
1460 /* agpctrl */
1461 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1462
1463 /* agpm */
1464 pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
1465 pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
1466 /* clear any possible error conditions */
1467 pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
1468
1469 intel_i830_setup_flush();
1470 return 0;
1471 }
1472
1473 static int intel_850_configure(void)
1474 {
1475 u32 temp;
1476 u16 temp2;
1477 struct aper_size_info_8 *current_size;
1478
1479 current_size = A_SIZE_8(agp_bridge->current_size);
1480
1481 /* aperture size */
1482 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1483
1484 /* address to map to */
1485 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1486 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1487
1488 /* attbase - aperture base */
1489 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1490
1491 /* agpctrl */
1492 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1493
1494 /* mcgcfg */
1495 pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
1496 pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
1497 /* clear any possible AGP-related error conditions */
1498 pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
1499 return 0;
1500 }
1501
1502 static int intel_860_configure(void)
1503 {
1504 u32 temp;
1505 u16 temp2;
1506 struct aper_size_info_8 *current_size;
1507
1508 current_size = A_SIZE_8(agp_bridge->current_size);
1509
1510 /* aperture size */
1511 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1512
1513 /* address to map to */
1514 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1515 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1516
1517 /* attbase - aperture base */
1518 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1519
1520 /* agpctrl */
1521 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1522
1523 /* mcgcfg */
1524 pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
1525 pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
1526 /* clear any possible AGP-related error conditions */
1527 pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
1528 return 0;
1529 }
1530
1531 static int intel_830mp_configure(void)
1532 {
1533 u32 temp;
1534 u16 temp2;
1535 struct aper_size_info_8 *current_size;
1536
1537 current_size = A_SIZE_8(agp_bridge->current_size);
1538
1539 /* aperture size */
1540 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1541
1542 /* address to map to */
1543 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1544 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1545
1546 /* attbase - aperture base */
1547 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1548
1549 /* agpctrl */
1550 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1551
1552 /* gmch */
1553 pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
1554 pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
1555 /* clear any possible AGP-related error conditions */
1556 pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
1557 return 0;
1558 }
1559
1560 static int intel_7505_configure(void)
1561 {
1562 u32 temp;
1563 u16 temp2;
1564 struct aper_size_info_8 *current_size;
1565
1566 current_size = A_SIZE_8(agp_bridge->current_size);
1567
1568 /* aperture size */
1569 pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
1570
1571 /* address to map to */
1572 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
1573 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
1574
1575 /* attbase - aperture base */
1576 pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
1577
1578 /* agpctrl */
1579 pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
1580
1581 /* mchcfg */
1582 pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
1583 pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
1584
1585 return 0;
1586 }
1587
1588 /* Setup function */
1589 static const struct gatt_mask intel_generic_masks[] =
1590 {
1591 {.mask = 0x00000017, .type = 0}
1592 };
1593
1594 static const struct aper_size_info_8 intel_815_sizes[2] =
1595 {
1596 {64, 16384, 4, 0},
1597 {32, 8192, 3, 8},
1598 };
1599
1600 static const struct aper_size_info_8 intel_8xx_sizes[7] =
1601 {
1602 {256, 65536, 6, 0},
1603 {128, 32768, 5, 32},
1604 {64, 16384, 4, 48},
1605 {32, 8192, 3, 56},
1606 {16, 4096, 2, 60},
1607 {8, 2048, 1, 62},
1608 {4, 1024, 0, 63}
1609 };
1610
1611 static const struct aper_size_info_16 intel_generic_sizes[7] =
1612 {
1613 {256, 65536, 6, 0},
1614 {128, 32768, 5, 32},
1615 {64, 16384, 4, 48},
1616 {32, 8192, 3, 56},
1617 {16, 4096, 2, 60},
1618 {8, 2048, 1, 62},
1619 {4, 1024, 0, 63}
1620 };
1621
1622 static const struct aper_size_info_8 intel_830mp_sizes[4] =
1623 {
1624 {256, 65536, 6, 0},
1625 {128, 32768, 5, 32},
1626 {64, 16384, 4, 48},
1627 {32, 8192, 3, 56}
1628 };
1629
1630 static const struct agp_bridge_driver intel_generic_driver = {
1631 .owner = THIS_MODULE,
1632 .aperture_sizes = intel_generic_sizes,
1633 .size_type = U16_APER_SIZE,
1634 .num_aperture_sizes = 7,
1635 .configure = intel_configure,
1636 .fetch_size = intel_fetch_size,
1637 .cleanup = intel_cleanup,
1638 .tlb_flush = intel_tlbflush,
1639 .mask_memory = agp_generic_mask_memory,
1640 .masks = intel_generic_masks,
1641 .agp_enable = agp_generic_enable,
1642 .cache_flush = global_cache_flush,
1643 .create_gatt_table = agp_generic_create_gatt_table,
1644 .free_gatt_table = agp_generic_free_gatt_table,
1645 .insert_memory = agp_generic_insert_memory,
1646 .remove_memory = agp_generic_remove_memory,
1647 .alloc_by_type = agp_generic_alloc_by_type,
1648 .free_by_type = agp_generic_free_by_type,
1649 .agp_alloc_page = agp_generic_alloc_page,
1650 .agp_destroy_page = agp_generic_destroy_page,
1651 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1652 };
1653
1654 static const struct agp_bridge_driver intel_810_driver = {
1655 .owner = THIS_MODULE,
1656 .aperture_sizes = intel_i810_sizes,
1657 .size_type = FIXED_APER_SIZE,
1658 .num_aperture_sizes = 2,
1659 .needs_scratch_page = TRUE,
1660 .configure = intel_i810_configure,
1661 .fetch_size = intel_i810_fetch_size,
1662 .cleanup = intel_i810_cleanup,
1663 .tlb_flush = intel_i810_tlbflush,
1664 .mask_memory = intel_i810_mask_memory,
1665 .masks = intel_i810_masks,
1666 .agp_enable = intel_i810_agp_enable,
1667 .cache_flush = global_cache_flush,
1668 .create_gatt_table = agp_generic_create_gatt_table,
1669 .free_gatt_table = agp_generic_free_gatt_table,
1670 .insert_memory = intel_i810_insert_entries,
1671 .remove_memory = intel_i810_remove_entries,
1672 .alloc_by_type = intel_i810_alloc_by_type,
1673 .free_by_type = intel_i810_free_by_type,
1674 .agp_alloc_page = agp_generic_alloc_page,
1675 .agp_destroy_page = agp_generic_destroy_page,
1676 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1677 };
1678
1679 static const struct agp_bridge_driver intel_815_driver = {
1680 .owner = THIS_MODULE,
1681 .aperture_sizes = intel_815_sizes,
1682 .size_type = U8_APER_SIZE,
1683 .num_aperture_sizes = 2,
1684 .configure = intel_815_configure,
1685 .fetch_size = intel_815_fetch_size,
1686 .cleanup = intel_8xx_cleanup,
1687 .tlb_flush = intel_8xx_tlbflush,
1688 .mask_memory = agp_generic_mask_memory,
1689 .masks = intel_generic_masks,
1690 .agp_enable = agp_generic_enable,
1691 .cache_flush = global_cache_flush,
1692 .create_gatt_table = agp_generic_create_gatt_table,
1693 .free_gatt_table = agp_generic_free_gatt_table,
1694 .insert_memory = agp_generic_insert_memory,
1695 .remove_memory = agp_generic_remove_memory,
1696 .alloc_by_type = agp_generic_alloc_by_type,
1697 .free_by_type = agp_generic_free_by_type,
1698 .agp_alloc_page = agp_generic_alloc_page,
1699 .agp_destroy_page = agp_generic_destroy_page,
1700 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1701 };
1702
1703 static const struct agp_bridge_driver intel_830_driver = {
1704 .owner = THIS_MODULE,
1705 .aperture_sizes = intel_i830_sizes,
1706 .size_type = FIXED_APER_SIZE,
1707 .num_aperture_sizes = 4,
1708 .needs_scratch_page = TRUE,
1709 .configure = intel_i830_configure,
1710 .fetch_size = intel_i830_fetch_size,
1711 .cleanup = intel_i830_cleanup,
1712 .tlb_flush = intel_i810_tlbflush,
1713 .mask_memory = intel_i810_mask_memory,
1714 .masks = intel_i810_masks,
1715 .agp_enable = intel_i810_agp_enable,
1716 .cache_flush = global_cache_flush,
1717 .create_gatt_table = intel_i830_create_gatt_table,
1718 .free_gatt_table = intel_i830_free_gatt_table,
1719 .insert_memory = intel_i830_insert_entries,
1720 .remove_memory = intel_i830_remove_entries,
1721 .alloc_by_type = intel_i830_alloc_by_type,
1722 .free_by_type = intel_i810_free_by_type,
1723 .agp_alloc_page = agp_generic_alloc_page,
1724 .agp_destroy_page = agp_generic_destroy_page,
1725 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
1726 .chipset_flush = intel_i830_chipset_flush,
1727 };
1728
1729 static const struct agp_bridge_driver intel_820_driver = {
1730 .owner = THIS_MODULE,
1731 .aperture_sizes = intel_8xx_sizes,
1732 .size_type = U8_APER_SIZE,
1733 .num_aperture_sizes = 7,
1734 .configure = intel_820_configure,
1735 .fetch_size = intel_8xx_fetch_size,
1736 .cleanup = intel_820_cleanup,
1737 .tlb_flush = intel_820_tlbflush,
1738 .mask_memory = agp_generic_mask_memory,
1739 .masks = intel_generic_masks,
1740 .agp_enable = agp_generic_enable,
1741 .cache_flush = global_cache_flush,
1742 .create_gatt_table = agp_generic_create_gatt_table,
1743 .free_gatt_table = agp_generic_free_gatt_table,
1744 .insert_memory = agp_generic_insert_memory,
1745 .remove_memory = agp_generic_remove_memory,
1746 .alloc_by_type = agp_generic_alloc_by_type,
1747 .free_by_type = agp_generic_free_by_type,
1748 .agp_alloc_page = agp_generic_alloc_page,
1749 .agp_destroy_page = agp_generic_destroy_page,
1750 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1751 };
1752
1753 static const struct agp_bridge_driver intel_830mp_driver = {
1754 .owner = THIS_MODULE,
1755 .aperture_sizes = intel_830mp_sizes,
1756 .size_type = U8_APER_SIZE,
1757 .num_aperture_sizes = 4,
1758 .configure = intel_830mp_configure,
1759 .fetch_size = intel_8xx_fetch_size,
1760 .cleanup = intel_8xx_cleanup,
1761 .tlb_flush = intel_8xx_tlbflush,
1762 .mask_memory = agp_generic_mask_memory,
1763 .masks = intel_generic_masks,
1764 .agp_enable = agp_generic_enable,
1765 .cache_flush = global_cache_flush,
1766 .create_gatt_table = agp_generic_create_gatt_table,
1767 .free_gatt_table = agp_generic_free_gatt_table,
1768 .insert_memory = agp_generic_insert_memory,
1769 .remove_memory = agp_generic_remove_memory,
1770 .alloc_by_type = agp_generic_alloc_by_type,
1771 .free_by_type = agp_generic_free_by_type,
1772 .agp_alloc_page = agp_generic_alloc_page,
1773 .agp_destroy_page = agp_generic_destroy_page,
1774 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1775 };
1776
1777 static const struct agp_bridge_driver intel_840_driver = {
1778 .owner = THIS_MODULE,
1779 .aperture_sizes = intel_8xx_sizes,
1780 .size_type = U8_APER_SIZE,
1781 .num_aperture_sizes = 7,
1782 .configure = intel_840_configure,
1783 .fetch_size = intel_8xx_fetch_size,
1784 .cleanup = intel_8xx_cleanup,
1785 .tlb_flush = intel_8xx_tlbflush,
1786 .mask_memory = agp_generic_mask_memory,
1787 .masks = intel_generic_masks,
1788 .agp_enable = agp_generic_enable,
1789 .cache_flush = global_cache_flush,
1790 .create_gatt_table = agp_generic_create_gatt_table,
1791 .free_gatt_table = agp_generic_free_gatt_table,
1792 .insert_memory = agp_generic_insert_memory,
1793 .remove_memory = agp_generic_remove_memory,
1794 .alloc_by_type = agp_generic_alloc_by_type,
1795 .free_by_type = agp_generic_free_by_type,
1796 .agp_alloc_page = agp_generic_alloc_page,
1797 .agp_destroy_page = agp_generic_destroy_page,
1798 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1799 };
1800
1801 static const struct agp_bridge_driver intel_845_driver = {
1802 .owner = THIS_MODULE,
1803 .aperture_sizes = intel_8xx_sizes,
1804 .size_type = U8_APER_SIZE,
1805 .num_aperture_sizes = 7,
1806 .configure = intel_845_configure,
1807 .fetch_size = intel_8xx_fetch_size,
1808 .cleanup = intel_8xx_cleanup,
1809 .tlb_flush = intel_8xx_tlbflush,
1810 .mask_memory = agp_generic_mask_memory,
1811 .masks = intel_generic_masks,
1812 .agp_enable = agp_generic_enable,
1813 .cache_flush = global_cache_flush,
1814 .create_gatt_table = agp_generic_create_gatt_table,
1815 .free_gatt_table = agp_generic_free_gatt_table,
1816 .insert_memory = agp_generic_insert_memory,
1817 .remove_memory = agp_generic_remove_memory,
1818 .alloc_by_type = agp_generic_alloc_by_type,
1819 .free_by_type = agp_generic_free_by_type,
1820 .agp_alloc_page = agp_generic_alloc_page,
1821 .agp_destroy_page = agp_generic_destroy_page,
1822 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1823 .chipset_flush = intel_i830_chipset_flush,
1824 };
1825
1826 static const struct agp_bridge_driver intel_850_driver = {
1827 .owner = THIS_MODULE,
1828 .aperture_sizes = intel_8xx_sizes,
1829 .size_type = U8_APER_SIZE,
1830 .num_aperture_sizes = 7,
1831 .configure = intel_850_configure,
1832 .fetch_size = intel_8xx_fetch_size,
1833 .cleanup = intel_8xx_cleanup,
1834 .tlb_flush = intel_8xx_tlbflush,
1835 .mask_memory = agp_generic_mask_memory,
1836 .masks = intel_generic_masks,
1837 .agp_enable = agp_generic_enable,
1838 .cache_flush = global_cache_flush,
1839 .create_gatt_table = agp_generic_create_gatt_table,
1840 .free_gatt_table = agp_generic_free_gatt_table,
1841 .insert_memory = agp_generic_insert_memory,
1842 .remove_memory = agp_generic_remove_memory,
1843 .alloc_by_type = agp_generic_alloc_by_type,
1844 .free_by_type = agp_generic_free_by_type,
1845 .agp_alloc_page = agp_generic_alloc_page,
1846 .agp_destroy_page = agp_generic_destroy_page,
1847 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1848 };
1849
1850 static const struct agp_bridge_driver intel_860_driver = {
1851 .owner = THIS_MODULE,
1852 .aperture_sizes = intel_8xx_sizes,
1853 .size_type = U8_APER_SIZE,
1854 .num_aperture_sizes = 7,
1855 .configure = intel_860_configure,
1856 .fetch_size = intel_8xx_fetch_size,
1857 .cleanup = intel_8xx_cleanup,
1858 .tlb_flush = intel_8xx_tlbflush,
1859 .mask_memory = agp_generic_mask_memory,
1860 .masks = intel_generic_masks,
1861 .agp_enable = agp_generic_enable,
1862 .cache_flush = global_cache_flush,
1863 .create_gatt_table = agp_generic_create_gatt_table,
1864 .free_gatt_table = agp_generic_free_gatt_table,
1865 .insert_memory = agp_generic_insert_memory,
1866 .remove_memory = agp_generic_remove_memory,
1867 .alloc_by_type = agp_generic_alloc_by_type,
1868 .free_by_type = agp_generic_free_by_type,
1869 .agp_alloc_page = agp_generic_alloc_page,
1870 .agp_destroy_page = agp_generic_destroy_page,
1871 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1872 };
1873
1874 static const struct agp_bridge_driver intel_915_driver = {
1875 .owner = THIS_MODULE,
1876 .aperture_sizes = intel_i830_sizes,
1877 .size_type = FIXED_APER_SIZE,
1878 .num_aperture_sizes = 4,
1879 .needs_scratch_page = TRUE,
1880 .configure = intel_i915_configure,
1881 .fetch_size = intel_i9xx_fetch_size,
1882 .cleanup = intel_i915_cleanup,
1883 .tlb_flush = intel_i810_tlbflush,
1884 .mask_memory = intel_i810_mask_memory,
1885 .masks = intel_i810_masks,
1886 .agp_enable = intel_i810_agp_enable,
1887 .cache_flush = global_cache_flush,
1888 .create_gatt_table = intel_i915_create_gatt_table,
1889 .free_gatt_table = intel_i830_free_gatt_table,
1890 .insert_memory = intel_i915_insert_entries,
1891 .remove_memory = intel_i915_remove_entries,
1892 .alloc_by_type = intel_i830_alloc_by_type,
1893 .free_by_type = intel_i810_free_by_type,
1894 .agp_alloc_page = agp_generic_alloc_page,
1895 .agp_destroy_page = agp_generic_destroy_page,
1896 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
1897 .chipset_flush = intel_i915_chipset_flush,
1898 };
1899
1900 static const struct agp_bridge_driver intel_i965_driver = {
1901 .owner = THIS_MODULE,
1902 .aperture_sizes = intel_i830_sizes,
1903 .size_type = FIXED_APER_SIZE,
1904 .num_aperture_sizes = 4,
1905 .needs_scratch_page = TRUE,
1906 .configure = intel_i915_configure,
1907 .fetch_size = intel_i9xx_fetch_size,
1908 .cleanup = intel_i915_cleanup,
1909 .tlb_flush = intel_i810_tlbflush,
1910 .mask_memory = intel_i965_mask_memory,
1911 .masks = intel_i810_masks,
1912 .agp_enable = intel_i810_agp_enable,
1913 .cache_flush = global_cache_flush,
1914 .create_gatt_table = intel_i965_create_gatt_table,
1915 .free_gatt_table = intel_i830_free_gatt_table,
1916 .insert_memory = intel_i915_insert_entries,
1917 .remove_memory = intel_i915_remove_entries,
1918 .alloc_by_type = intel_i830_alloc_by_type,
1919 .free_by_type = intel_i810_free_by_type,
1920 .agp_alloc_page = agp_generic_alloc_page,
1921 .agp_destroy_page = agp_generic_destroy_page,
1922 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
1923 .chipset_flush = intel_i915_chipset_flush,
1924 };
1925
1926 static const struct agp_bridge_driver intel_7505_driver = {
1927 .owner = THIS_MODULE,
1928 .aperture_sizes = intel_8xx_sizes,
1929 .size_type = U8_APER_SIZE,
1930 .num_aperture_sizes = 7,
1931 .configure = intel_7505_configure,
1932 .fetch_size = intel_8xx_fetch_size,
1933 .cleanup = intel_8xx_cleanup,
1934 .tlb_flush = intel_8xx_tlbflush,
1935 .mask_memory = agp_generic_mask_memory,
1936 .masks = intel_generic_masks,
1937 .agp_enable = agp_generic_enable,
1938 .cache_flush = global_cache_flush,
1939 .create_gatt_table = agp_generic_create_gatt_table,
1940 .free_gatt_table = agp_generic_free_gatt_table,
1941 .insert_memory = agp_generic_insert_memory,
1942 .remove_memory = agp_generic_remove_memory,
1943 .alloc_by_type = agp_generic_alloc_by_type,
1944 .free_by_type = agp_generic_free_by_type,
1945 .agp_alloc_page = agp_generic_alloc_page,
1946 .agp_destroy_page = agp_generic_destroy_page,
1947 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1948 };
1949
1950 static const struct agp_bridge_driver intel_g33_driver = {
1951 .owner = THIS_MODULE,
1952 .aperture_sizes = intel_i830_sizes,
1953 .size_type = FIXED_APER_SIZE,
1954 .num_aperture_sizes = 4,
1955 .needs_scratch_page = TRUE,
1956 .configure = intel_i915_configure,
1957 .fetch_size = intel_i9xx_fetch_size,
1958 .cleanup = intel_i915_cleanup,
1959 .tlb_flush = intel_i810_tlbflush,
1960 .mask_memory = intel_i965_mask_memory,
1961 .masks = intel_i810_masks,
1962 .agp_enable = intel_i810_agp_enable,
1963 .cache_flush = global_cache_flush,
1964 .create_gatt_table = intel_i915_create_gatt_table,
1965 .free_gatt_table = intel_i830_free_gatt_table,
1966 .insert_memory = intel_i915_insert_entries,
1967 .remove_memory = intel_i915_remove_entries,
1968 .alloc_by_type = intel_i830_alloc_by_type,
1969 .free_by_type = intel_i810_free_by_type,
1970 .agp_alloc_page = agp_generic_alloc_page,
1971 .agp_destroy_page = agp_generic_destroy_page,
1972 .agp_type_to_mask_type = intel_i830_type_to_mask_type,
1973 .chipset_flush = intel_i915_chipset_flush,
1974 };
1975
1976 static int find_gmch(u16 device)
1977 {
1978 struct pci_dev *gmch_device;
1979
1980 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
1981 if (gmch_device && PCI_FUNC(gmch_device->devfn) != 0) {
1982 gmch_device = pci_get_device(PCI_VENDOR_ID_INTEL,
1983 device, gmch_device);
1984 }
1985
1986 if (!gmch_device)
1987 return 0;
1988
1989 intel_private.pcidev = gmch_device;
1990 return 1;
1991 }
1992
1993 /* Table to describe Intel GMCH and AGP/PCIE GART drivers. At least one of
1994 * driver and gmch_driver must be non-null, and find_gmch will determine
1995 * which one should be used if a gmch_chip_id is present.
1996 */
1997 static const struct intel_driver_description {
1998 unsigned int chip_id;
1999 unsigned int gmch_chip_id;
2000 unsigned int multi_gmch_chip; /* if we have more gfx chip type on this HB. */
2001 char *name;
2002 const struct agp_bridge_driver *driver;
2003 const struct agp_bridge_driver *gmch_driver;
2004 } intel_agp_chipsets[] = {
2005 { PCI_DEVICE_ID_INTEL_82443LX_0, 0, 0, "440LX", &intel_generic_driver, NULL },
2006 { PCI_DEVICE_ID_INTEL_82443BX_0, 0, 0, "440BX", &intel_generic_driver, NULL },
2007 { PCI_DEVICE_ID_INTEL_82443GX_0, 0, 0, "440GX", &intel_generic_driver, NULL },
2008 { PCI_DEVICE_ID_INTEL_82810_MC1, PCI_DEVICE_ID_INTEL_82810_IG1, 0, "i810",
2009 NULL, &intel_810_driver },
2010 { PCI_DEVICE_ID_INTEL_82810_MC3, PCI_DEVICE_ID_INTEL_82810_IG3, 0, "i810",
2011 NULL, &intel_810_driver },
2012 { PCI_DEVICE_ID_INTEL_82810E_MC, PCI_DEVICE_ID_INTEL_82810E_IG, 0, "i810",
2013 NULL, &intel_810_driver },
2014 { PCI_DEVICE_ID_INTEL_82815_MC, PCI_DEVICE_ID_INTEL_82815_CGC, 0, "i815",
2015 &intel_815_driver, &intel_810_driver },
2016 { PCI_DEVICE_ID_INTEL_82820_HB, 0, 0, "i820", &intel_820_driver, NULL },
2017 { PCI_DEVICE_ID_INTEL_82820_UP_HB, 0, 0, "i820", &intel_820_driver, NULL },
2018 { PCI_DEVICE_ID_INTEL_82830_HB, PCI_DEVICE_ID_INTEL_82830_CGC, 0, "830M",
2019 &intel_830mp_driver, &intel_830_driver },
2020 { PCI_DEVICE_ID_INTEL_82840_HB, 0, 0, "i840", &intel_840_driver, NULL },
2021 { PCI_DEVICE_ID_INTEL_82845_HB, 0, 0, "845G", &intel_845_driver, NULL },
2022 { PCI_DEVICE_ID_INTEL_82845G_HB, PCI_DEVICE_ID_INTEL_82845G_IG, 0, "830M",
2023 &intel_845_driver, &intel_830_driver },
2024 { PCI_DEVICE_ID_INTEL_82850_HB, 0, 0, "i850", &intel_850_driver, NULL },
2025 { PCI_DEVICE_ID_INTEL_82855PM_HB, 0, 0, "855PM", &intel_845_driver, NULL },
2026 { PCI_DEVICE_ID_INTEL_82855GM_HB, PCI_DEVICE_ID_INTEL_82855GM_IG, 0, "855GM",
2027 &intel_845_driver, &intel_830_driver },
2028 { PCI_DEVICE_ID_INTEL_82860_HB, 0, 0, "i860", &intel_860_driver, NULL },
2029 { PCI_DEVICE_ID_INTEL_82865_HB, PCI_DEVICE_ID_INTEL_82865_IG, 0, "865",
2030 &intel_845_driver, &intel_830_driver },
2031 { PCI_DEVICE_ID_INTEL_82875_HB, 0, 0, "i875", &intel_845_driver, NULL },
2032 { PCI_DEVICE_ID_INTEL_E7221_HB, PCI_DEVICE_ID_INTEL_E7221_IG, 0, "E7221 (i915)",
2033 NULL, &intel_915_driver },
2034 { PCI_DEVICE_ID_INTEL_82915G_HB, PCI_DEVICE_ID_INTEL_82915G_IG, 0, "915G",
2035 NULL, &intel_915_driver },
2036 { PCI_DEVICE_ID_INTEL_82915GM_HB, PCI_DEVICE_ID_INTEL_82915GM_IG, 0, "915GM",
2037 NULL, &intel_915_driver },
2038 { PCI_DEVICE_ID_INTEL_82945G_HB, PCI_DEVICE_ID_INTEL_82945G_IG, 0, "945G",
2039 NULL, &intel_915_driver },
2040 { PCI_DEVICE_ID_INTEL_82945GM_HB, PCI_DEVICE_ID_INTEL_82945GM_IG, 0, "945GM",
2041 NULL, &intel_915_driver },
2042 { PCI_DEVICE_ID_INTEL_82945GME_HB, PCI_DEVICE_ID_INTEL_82945GME_IG, 0, "945GME",
2043 NULL, &intel_915_driver },
2044 { PCI_DEVICE_ID_INTEL_82946GZ_HB, PCI_DEVICE_ID_INTEL_82946GZ_IG, 0, "946GZ",
2045 NULL, &intel_i965_driver },
2046 { PCI_DEVICE_ID_INTEL_82G35_HB, PCI_DEVICE_ID_INTEL_82G35_IG, 0, "G35",
2047 NULL, &intel_i965_driver },
2048 { PCI_DEVICE_ID_INTEL_82965Q_HB, PCI_DEVICE_ID_INTEL_82965Q_IG, 0, "965Q",
2049 NULL, &intel_i965_driver },
2050 { PCI_DEVICE_ID_INTEL_82965G_HB, PCI_DEVICE_ID_INTEL_82965G_IG, 0, "965G",
2051 NULL, &intel_i965_driver },
2052 { PCI_DEVICE_ID_INTEL_82965GM_HB, PCI_DEVICE_ID_INTEL_82965GM_IG, 0, "965GM",
2053 NULL, &intel_i965_driver },
2054 { PCI_DEVICE_ID_INTEL_82965GME_HB, PCI_DEVICE_ID_INTEL_82965GME_IG, 0, "965GME/GLE",
2055 NULL, &intel_i965_driver },
2056 { PCI_DEVICE_ID_INTEL_7505_0, 0, 0, "E7505", &intel_7505_driver, NULL },
2057 { PCI_DEVICE_ID_INTEL_7205_0, 0, 0, "E7205", &intel_7505_driver, NULL },
2058 { PCI_DEVICE_ID_INTEL_G33_HB, PCI_DEVICE_ID_INTEL_G33_IG, 0, "G33",
2059 NULL, &intel_g33_driver },
2060 { PCI_DEVICE_ID_INTEL_Q35_HB, PCI_DEVICE_ID_INTEL_Q35_IG, 0, "Q35",
2061 NULL, &intel_g33_driver },
2062 { PCI_DEVICE_ID_INTEL_Q33_HB, PCI_DEVICE_ID_INTEL_Q33_IG, 0, "Q33",
2063 NULL, &intel_g33_driver },
2064 { PCI_DEVICE_ID_INTEL_IGD_HB, PCI_DEVICE_ID_INTEL_IGD_IG, 0,
2065 "Intel Integrated Graphics Device", NULL, &intel_i965_driver },
2066 { 0, 0, 0, NULL, NULL, NULL }
2067 };
2068
2069 static int __devinit agp_intel_probe(struct pci_dev *pdev,
2070 const struct pci_device_id *ent)
2071 {
2072 struct agp_bridge_data *bridge;
2073 u8 cap_ptr = 0;
2074 struct resource *r;
2075 int i;
2076
2077 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
2078
2079 bridge = agp_alloc_bridge();
2080 if (!bridge)
2081 return -ENOMEM;
2082
2083 for (i = 0; intel_agp_chipsets[i].name != NULL; i++) {
2084 /* In case that multiple models of gfx chip may
2085 stand on same host bridge type, this can be
2086 sure we detect the right IGD. */
2087 if (pdev->device == intel_agp_chipsets[i].chip_id) {
2088 if ((intel_agp_chipsets[i].gmch_chip_id != 0) &&
2089 find_gmch(intel_agp_chipsets[i].gmch_chip_id)) {
2090 bridge->driver =
2091 intel_agp_chipsets[i].gmch_driver;
2092 break;
2093 } else if (intel_agp_chipsets[i].multi_gmch_chip) {
2094 continue;
2095 } else {
2096 bridge->driver = intel_agp_chipsets[i].driver;
2097 break;
2098 }
2099 }
2100 }
2101
2102 if (intel_agp_chipsets[i].name == NULL) {
2103 if (cap_ptr)
2104 printk(KERN_WARNING PFX "Unsupported Intel chipset"
2105 "(device id: %04x)\n", pdev->device);
2106 agp_put_bridge(bridge);
2107 return -ENODEV;
2108 }
2109
2110 if (bridge->driver == NULL) {
2111 /* bridge has no AGP and no IGD detected */
2112 if (cap_ptr)
2113 printk(KERN_WARNING PFX "Failed to find bridge device "
2114 "(chip_id: %04x)\n",
2115 intel_agp_chipsets[i].gmch_chip_id);
2116 agp_put_bridge(bridge);
2117 return -ENODEV;
2118 }
2119
2120 bridge->dev = pdev;
2121 bridge->capndx = cap_ptr;
2122 bridge->dev_private_data = &intel_private;
2123
2124 printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n",
2125 intel_agp_chipsets[i].name);
2126
2127 /*
2128 * The following fixes the case where the BIOS has "forgotten" to
2129 * provide an address range for the GART.
2130 * 20030610 - hamish@zot.org
2131 */
2132 r = &pdev->resource[0];
2133 if (!r->start && r->end) {
2134 if (pci_assign_resource(pdev, 0)) {
2135 printk(KERN_ERR PFX "could not assign resource 0\n");
2136 agp_put_bridge(bridge);
2137 return -ENODEV;
2138 }
2139 }
2140
2141 /*
2142 * If the device has not been properly setup, the following will catch
2143 * the problem and should stop the system from crashing.
2144 * 20030610 - hamish@zot.org
2145 */
2146 if (pci_enable_device(pdev)) {
2147 printk(KERN_ERR PFX "Unable to Enable PCI device\n");
2148 agp_put_bridge(bridge);
2149 return -ENODEV;
2150 }
2151
2152 /* Fill in the mode register */
2153 if (cap_ptr) {
2154 pci_read_config_dword(pdev,
2155 bridge->capndx+PCI_AGP_STATUS,
2156 &bridge->mode);
2157 }
2158
2159 pci_set_drvdata(pdev, bridge);
2160 return agp_add_bridge(bridge);
2161 }
2162
2163 static void __devexit agp_intel_remove(struct pci_dev *pdev)
2164 {
2165 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2166
2167 agp_remove_bridge(bridge);
2168
2169 if (intel_private.pcidev)
2170 pci_dev_put(intel_private.pcidev);
2171
2172 agp_put_bridge(bridge);
2173 }
2174
2175 #ifdef CONFIG_PM
2176 static int agp_intel_resume(struct pci_dev *pdev)
2177 {
2178 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
2179
2180 pci_restore_state(pdev);
2181
2182 /* We should restore our graphics device's config space,
2183 * as host bridge (00:00) resumes before graphics device (02:00),
2184 * then our access to its pci space can work right.
2185 */
2186 if (intel_private.pcidev)
2187 pci_restore_state(intel_private.pcidev);
2188
2189 if (bridge->driver == &intel_generic_driver)
2190 intel_configure();
2191 else if (bridge->driver == &intel_850_driver)
2192 intel_850_configure();
2193 else if (bridge->driver == &intel_845_driver)
2194 intel_845_configure();
2195 else if (bridge->driver == &intel_830mp_driver)
2196 intel_830mp_configure();
2197 else if (bridge->driver == &intel_915_driver)
2198 intel_i915_configure();
2199 else if (bridge->driver == &intel_830_driver)
2200 intel_i830_configure();
2201 else if (bridge->driver == &intel_810_driver)
2202 intel_i810_configure();
2203 else if (bridge->driver == &intel_i965_driver)
2204 intel_i915_configure();
2205
2206 return 0;
2207 }
2208 #endif
2209
2210 static struct pci_device_id agp_intel_pci_table[] = {
2211 #define ID(x) \
2212 { \
2213 .class = (PCI_CLASS_BRIDGE_HOST << 8), \
2214 .class_mask = ~0, \
2215 .vendor = PCI_VENDOR_ID_INTEL, \
2216 .device = x, \
2217 .subvendor = PCI_ANY_ID, \
2218 .subdevice = PCI_ANY_ID, \
2219 }
2220 ID(PCI_DEVICE_ID_INTEL_82443LX_0),
2221 ID(PCI_DEVICE_ID_INTEL_82443BX_0),
2222 ID(PCI_DEVICE_ID_INTEL_82443GX_0),
2223 ID(PCI_DEVICE_ID_INTEL_82810_MC1),
2224 ID(PCI_DEVICE_ID_INTEL_82810_MC3),
2225 ID(PCI_DEVICE_ID_INTEL_82810E_MC),
2226 ID(PCI_DEVICE_ID_INTEL_82815_MC),
2227 ID(PCI_DEVICE_ID_INTEL_82820_HB),
2228 ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
2229 ID(PCI_DEVICE_ID_INTEL_82830_HB),
2230 ID(PCI_DEVICE_ID_INTEL_82840_HB),
2231 ID(PCI_DEVICE_ID_INTEL_82845_HB),
2232 ID(PCI_DEVICE_ID_INTEL_82845G_HB),
2233 ID(PCI_DEVICE_ID_INTEL_82850_HB),
2234 ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
2235 ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
2236 ID(PCI_DEVICE_ID_INTEL_82860_HB),
2237 ID(PCI_DEVICE_ID_INTEL_82865_HB),
2238 ID(PCI_DEVICE_ID_INTEL_82875_HB),
2239 ID(PCI_DEVICE_ID_INTEL_7505_0),
2240 ID(PCI_DEVICE_ID_INTEL_7205_0),
2241 ID(PCI_DEVICE_ID_INTEL_E7221_HB),
2242 ID(PCI_DEVICE_ID_INTEL_82915G_HB),
2243 ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
2244 ID(PCI_DEVICE_ID_INTEL_82945G_HB),
2245 ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
2246 ID(PCI_DEVICE_ID_INTEL_82945GME_HB),
2247 ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
2248 ID(PCI_DEVICE_ID_INTEL_82G35_HB),
2249 ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
2250 ID(PCI_DEVICE_ID_INTEL_82965G_HB),
2251 ID(PCI_DEVICE_ID_INTEL_82965GM_HB),
2252 ID(PCI_DEVICE_ID_INTEL_82965GME_HB),
2253 ID(PCI_DEVICE_ID_INTEL_G33_HB),
2254 ID(PCI_DEVICE_ID_INTEL_Q35_HB),
2255 ID(PCI_DEVICE_ID_INTEL_Q33_HB),
2256 ID(PCI_DEVICE_ID_INTEL_IGD_HB),
2257 { }
2258 };
2259
2260 MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
2261
2262 static struct pci_driver agp_intel_pci_driver = {
2263 .name = "agpgart-intel",
2264 .id_table = agp_intel_pci_table,
2265 .probe = agp_intel_probe,
2266 .remove = __devexit_p(agp_intel_remove),
2267 #ifdef CONFIG_PM
2268 .resume = agp_intel_resume,
2269 #endif
2270 };
2271
2272 static int __init agp_intel_init(void)
2273 {
2274 if (agp_off)
2275 return -EINVAL;
2276 return pci_register_driver(&agp_intel_pci_driver);
2277 }
2278
2279 static void __exit agp_intel_cleanup(void)
2280 {
2281 pci_unregister_driver(&agp_intel_pci_driver);
2282 }
2283
2284 module_init(agp_intel_init);
2285 module_exit(agp_intel_cleanup);
2286
2287 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
2288 MODULE_LICENSE("GPL and additional rights");
linux kernel for loongson