1 /*
2 * VIA AGPGART routines.
3 */
4
5 #include <linux/types.h>
6 #include <linux/module.h>
7 #include <linux/pci.h>
8 #include <linux/init.h>
9 #include <linux/agp_backend.h>
10 #include "agp.h"
11
12 static const struct pci_device_id agp_via_pci_table[];
13
14 #define VIA_GARTCTRL 0x80
15 #define VIA_APSIZE 0x84
16 #define VIA_ATTBASE 0x88
17
18 #define VIA_AGP3_GARTCTRL 0x90
19 #define VIA_AGP3_APSIZE 0x94
20 #define VIA_AGP3_ATTBASE 0x98
21 #define VIA_AGPSEL 0xfd
22
23 static int via_fetch_size(void)
24 {
25 int i;
26 u8 temp;
27 struct aper_size_info_8 *values;
28
29 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
30 pci_read_config_byte(agp_bridge->dev, VIA_APSIZE, &temp);
31 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
32 if (temp == values[i].size_value) {
33 agp_bridge->previous_size =
34 agp_bridge->current_size = (void *) (values + i);
35 agp_bridge->aperture_size_idx = i;
36 return values[i].size;
37 }
38 }
39 printk(KERN_ERR PFX "Unknown aperture size from AGP bridge (0x%x)\n", temp);
40 return 0;
41 }
42
43
44 static int via_configure(void)
45 {
46 u32 temp;
47 struct aper_size_info_8 *current_size;
48
49 current_size = A_SIZE_8(agp_bridge->current_size);
50 /* aperture size */
51 pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
52 current_size->size_value);
53 /* address to map too */
54 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
55 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
56
57 /* GART control register */
58 pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, 0x0000000f);
59
60 /* attbase - aperture GATT base */
61 pci_write_config_dword(agp_bridge->dev, VIA_ATTBASE,
62 (agp_bridge->gatt_bus_addr & 0xfffff000) | 3);
63 return 0;
64 }
65
66
67 static void via_cleanup(void)
68 {
69 struct aper_size_info_8 *previous_size;
70
71 previous_size = A_SIZE_8(agp_bridge->previous_size);
72 pci_write_config_byte(agp_bridge->dev, VIA_APSIZE,
73 previous_size->size_value);
74 /* Do not disable by writing 0 to VIA_ATTBASE, it screws things up
75 * during reinitialization.
76 */
77 }
78
79
80 static void via_tlbflush(struct agp_memory *mem)
81 {
82 u32 temp;
83
84 pci_read_config_dword(agp_bridge->dev, VIA_GARTCTRL, &temp);
85 temp |= (1<<7);
86 pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
87 temp &= ~(1<<7);
88 pci_write_config_dword(agp_bridge->dev, VIA_GARTCTRL, temp);
89 }
90
91
92 static const struct aper_size_info_8 via_generic_sizes[9] =
93 {
94 {256, 65536, 6, 0},
95 {128, 32768, 5, 128},
96 {64, 16384, 4, 192},
97 {32, 8192, 3, 224},
98 {16, 4096, 2, 240},
99 {8, 2048, 1, 248},
100 {4, 1024, 0, 252},
101 {2, 512, 0, 254},
102 {1, 256, 0, 255}
103 };
104
105
106 static int via_fetch_size_agp3(void)
107 {
108 int i;
109 u16 temp;
110 struct aper_size_info_16 *values;
111
112 values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
113 pci_read_config_word(agp_bridge->dev, VIA_AGP3_APSIZE, &temp);
114 temp &= 0xfff;
115
116 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
117 if (temp == values[i].size_value) {
118 agp_bridge->previous_size =
119 agp_bridge->current_size = (void *) (values + i);
120 agp_bridge->aperture_size_idx = i;
121 return values[i].size;
122 }
123 }
124 return 0;
125 }
126
127
128 static int via_configure_agp3(void)
129 {
130 u32 temp;
131 struct aper_size_info_16 *current_size;
132
133 current_size = A_SIZE_16(agp_bridge->current_size);
134
135 /* address to map too */
136 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
137 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
138
139 /* attbase - aperture GATT base */
140 pci_write_config_dword(agp_bridge->dev, VIA_AGP3_ATTBASE,
141 agp_bridge->gatt_bus_addr & 0xfffff000);
142
143 /* 1. Enable GTLB in RX90<7>, all AGP aperture access needs to fetch
144 * translation table first.
145 * 2. Enable AGP aperture in RX91<0>. This bit controls the enabling of the
146 * graphics AGP aperture for the AGP3.0 port.
147 */
148 pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
149 pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp | (3<<7));
150 return 0;
151 }
152
153
154 static void via_cleanup_agp3(void)
155 {
156 struct aper_size_info_16 *previous_size;
157
158 previous_size = A_SIZE_16(agp_bridge->previous_size);
159 pci_write_config_byte(agp_bridge->dev, VIA_APSIZE, previous_size->size_value);
160 }
161
162
163 static void via_tlbflush_agp3(struct agp_memory *mem)
164 {
165 u32 temp;
166
167 pci_read_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, &temp);
168 pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp & ~(1<<7));
169 pci_write_config_dword(agp_bridge->dev, VIA_AGP3_GARTCTRL, temp);
170 }
171
172
173 static const struct agp_bridge_driver via_agp3_driver = {
174 .owner = THIS_MODULE,
175 .aperture_sizes = agp3_generic_sizes,
176 .size_type = U8_APER_SIZE,
177 .num_aperture_sizes = 10,
178 .configure = via_configure_agp3,
179 .fetch_size = via_fetch_size_agp3,
180 .cleanup = via_cleanup_agp3,
181 .tlb_flush = via_tlbflush_agp3,
182 .mask_memory = agp_generic_mask_memory,
183 .masks = NULL,
184 .agp_enable = agp_generic_enable,
185 .cache_flush = global_cache_flush,
186 .create_gatt_table = agp_generic_create_gatt_table,
187 .free_gatt_table = agp_generic_free_gatt_table,
188 .insert_memory = agp_generic_insert_memory,
189 .remove_memory = agp_generic_remove_memory,
190 .alloc_by_type = agp_generic_alloc_by_type,
191 .free_by_type = agp_generic_free_by_type,
192 .agp_alloc_page = agp_generic_alloc_page,
193 .agp_destroy_page = agp_generic_destroy_page,
194 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
195 };
196
197 static const struct agp_bridge_driver via_driver = {
198 .owner = THIS_MODULE,
199 .aperture_sizes = via_generic_sizes,
200 .size_type = U8_APER_SIZE,
201 .num_aperture_sizes = 9,
202 .configure = via_configure,
203 .fetch_size = via_fetch_size,
204 .cleanup = via_cleanup,
205 .tlb_flush = via_tlbflush,
206 .mask_memory = agp_generic_mask_memory,
207 .masks = NULL,
208 .agp_enable = agp_generic_enable,
209 .cache_flush = global_cache_flush,
210 .create_gatt_table = agp_generic_create_gatt_table,
211 .free_gatt_table = agp_generic_free_gatt_table,
212 .insert_memory = agp_generic_insert_memory,
213 .remove_memory = agp_generic_remove_memory,
214 .alloc_by_type = agp_generic_alloc_by_type,
215 .free_by_type = agp_generic_free_by_type,
216 .agp_alloc_page = agp_generic_alloc_page,
217 .agp_destroy_page = agp_generic_destroy_page,
218 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
219 };
220
221 static struct agp_device_ids via_agp_device_ids[] __devinitdata =
222 {
223 {
224 .device_id = PCI_DEVICE_ID_VIA_82C597_0,
225 .chipset_name = "Apollo VP3",
226 },
227
228 {
229 .device_id = PCI_DEVICE_ID_VIA_82C598_0,
230 .chipset_name = "Apollo MVP3",
231 },
232
233 {
234 .device_id = PCI_DEVICE_ID_VIA_8501_0,
235 .chipset_name = "Apollo MVP4",
236 },
237
238 /* VT8601 */
239 {
240 .device_id = PCI_DEVICE_ID_VIA_8601_0,
241 .chipset_name = "Apollo ProMedia/PLE133Ta",
242 },
243
244 /* VT82C693A / VT28C694T */
245 {
246 .device_id = PCI_DEVICE_ID_VIA_82C691_0,
247 .chipset_name = "Apollo Pro 133",
248 },
249
250 {
251 .device_id = PCI_DEVICE_ID_VIA_8371_0,
252 .chipset_name = "KX133",
253 },
254
255 /* VT8633 */
256 {
257 .device_id = PCI_DEVICE_ID_VIA_8633_0,
258 .chipset_name = "Pro 266",
259 },
260
261 {
262 .device_id = PCI_DEVICE_ID_VIA_XN266,
263 .chipset_name = "Apollo Pro266",
264 },
265
266 /* VT8361 */
267 {
268 .device_id = PCI_DEVICE_ID_VIA_8361,
269 .chipset_name = "KLE133",
270 },
271
272 /* VT8365 / VT8362 */
273 {
274 .device_id = PCI_DEVICE_ID_VIA_8363_0,
275 .chipset_name = "Twister-K/KT133x/KM133",
276 },
277
278 /* VT8753A */
279 {
280 .device_id = PCI_DEVICE_ID_VIA_8753_0,
281 .chipset_name = "P4X266",
282 },
283
284 /* VT8366 */
285 {
286 .device_id = PCI_DEVICE_ID_VIA_8367_0,
287 .chipset_name = "KT266/KY266x/KT333",
288 },
289
290 /* VT8633 (for CuMine/ Celeron) */
291 {
292 .device_id = PCI_DEVICE_ID_VIA_8653_0,
293 .chipset_name = "Pro266T",
294 },
295
296 /* KM266 / PM266 */
297 {
298 .device_id = PCI_DEVICE_ID_VIA_XM266,
299 .chipset_name = "PM266/KM266",
300 },
301
302 /* CLE266 */
303 {
304 .device_id = PCI_DEVICE_ID_VIA_862X_0,
305 .chipset_name = "CLE266",
306 },
307
308 {
309 .device_id = PCI_DEVICE_ID_VIA_8377_0,
310 .chipset_name = "KT400/KT400A/KT600",
311 },
312
313 /* VT8604 / VT8605 / VT8603
314 * (Apollo Pro133A chipset with S3 Savage4) */
315 {
316 .device_id = PCI_DEVICE_ID_VIA_8605_0,
317 .chipset_name = "ProSavage PM133/PL133/PN133"
318 },
319
320 /* P4M266x/P4N266 */
321 {
322 .device_id = PCI_DEVICE_ID_VIA_8703_51_0,
323 .chipset_name = "P4M266x/P4N266",
324 },
325
326 /* VT8754 */
327 {
328 .device_id = PCI_DEVICE_ID_VIA_8754C_0,
329 .chipset_name = "PT800",
330 },
331
332 /* P4X600 */
333 {
334 .device_id = PCI_DEVICE_ID_VIA_8763_0,
335 .chipset_name = "P4X600"
336 },
337
338 /* KM400 */
339 {
340 .device_id = PCI_DEVICE_ID_VIA_8378_0,
341 .chipset_name = "KM400/KM400A",
342 },
343
344 /* PT880 */
345 {
346 .device_id = PCI_DEVICE_ID_VIA_PT880,
347 .chipset_name = "PT880",
348 },
349
350 /* PT880 Ultra */
351 {
352 .device_id = PCI_DEVICE_ID_VIA_PT880ULTRA,
353 .chipset_name = "PT880 Ultra",
354 },
355
356 /* PT890 */
357 {
358 .device_id = PCI_DEVICE_ID_VIA_8783_0,
359 .chipset_name = "PT890",
360 },
361
362 /* PM800/PN800/PM880/PN880 */
363 {
364 .device_id = PCI_DEVICE_ID_VIA_PX8X0_0,
365 .chipset_name = "PM800/PN800/PM880/PN880",
366 },
367 /* KT880 */
368 {
369 .device_id = PCI_DEVICE_ID_VIA_3269_0,
370 .chipset_name = "KT880",
371 },
372 /* KTxxx/Px8xx */
373 {
374 .device_id = PCI_DEVICE_ID_VIA_83_87XX_1,
375 .chipset_name = "VT83xx/VT87xx/KTxxx/Px8xx",
376 },
377 /* P4M800 */
378 {
379 .device_id = PCI_DEVICE_ID_VIA_3296_0,
380 .chipset_name = "P4M800",
381 },
382 /* P4M800CE */
383 {
384 .device_id = PCI_DEVICE_ID_VIA_P4M800CE,
385 .chipset_name = "VT3314",
386 },
387 /* VT3324 / CX700 */
388 {
389 .device_id = PCI_DEVICE_ID_VIA_VT3324,
390 .chipset_name = "CX700",
391 },
392 /* VT3336 */
393 {
394 .device_id = PCI_DEVICE_ID_VIA_VT3336,
395 .chipset_name = "VT3336",
396 },
397 /* P4M890 */
398 {
399 .device_id = PCI_DEVICE_ID_VIA_P4M890,
400 .chipset_name = "P4M890",
401 },
402 /* P4M900 */
403 {
404 .device_id = PCI_DEVICE_ID_VIA_VT3364,
405 .chipset_name = "P4M900",
406 },
407 { }, /* dummy final entry, always present */
408 };
409
410
411 /*
412 * VIA's AGP3 chipsets do magick to put the AGP bridge compliant
413 * with the same standards version as the graphics card.
414 */
415 static void check_via_agp3 (struct agp_bridge_data *bridge)
416 {
417 u8 reg;
418
419 pci_read_config_byte(bridge->dev, VIA_AGPSEL, ®);
420 /* Check AGP 2.0 compatibility mode. */
421 if ((reg & (1<<1))==0)
422 bridge->driver = &via_agp3_driver;
423 }
424
425
426 static int __devinit agp_via_probe(struct pci_dev *pdev,
427 const struct pci_device_id *ent)
428 {
429 struct agp_device_ids *devs = via_agp_device_ids;
430 struct agp_bridge_data *bridge;
431 int j = 0;
432 u8 cap_ptr;
433
434 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
435 if (!cap_ptr)
436 return -ENODEV;
437
438 j = ent - agp_via_pci_table;
439 printk (KERN_INFO PFX "Detected VIA %s chipset\n", devs[j].chipset_name);
440
441 bridge = agp_alloc_bridge();
442 if (!bridge)
443 return -ENOMEM;
444
445 bridge->dev = pdev;
446 bridge->capndx = cap_ptr;
447 bridge->driver = &via_driver;
448
449 /*
450 * Garg, there are KT400s with KT266 IDs.
451 */
452 if (pdev->device == PCI_DEVICE_ID_VIA_8367_0) {
453 /* Is there a KT400 subsystem ? */
454 if (pdev->subsystem_device == PCI_DEVICE_ID_VIA_8377_0) {
455 printk(KERN_INFO PFX "Found KT400 in disguise as a KT266.\n");
456 check_via_agp3(bridge);
457 }
458 }
459
460 /* If this is an AGP3 bridge, check which mode its in and adjust. */
461 get_agp_version(bridge);
462 if (bridge->major_version >= 3)
463 check_via_agp3(bridge);
464
465 /* Fill in the mode register */
466 pci_read_config_dword(pdev,
467 bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
468
469 pci_set_drvdata(pdev, bridge);
470 return agp_add_bridge(bridge);
471 }
472
473 static void __devexit agp_via_remove(struct pci_dev *pdev)
474 {
475 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
476
477 agp_remove_bridge(bridge);
478 agp_put_bridge(bridge);
479 }
480
481 #ifdef CONFIG_PM
482
483 static int agp_via_suspend(struct pci_dev *pdev, pm_message_t state)
484 {
485 pci_save_state (pdev);
486 pci_set_power_state (pdev, PCI_D3hot);
487
488 return 0;
489 }
490
491 static int agp_via_resume(struct pci_dev *pdev)
492 {
493 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
494
495 pci_set_power_state (pdev, PCI_D0);
496 pci_restore_state(pdev);
497
498 if (bridge->driver == &via_agp3_driver)
499 return via_configure_agp3();
500 else if (bridge->driver == &via_driver)
501 return via_configure();
502
503 return 0;
504 }
505
506 #endif /* CONFIG_PM */
507
508 /* must be the same order as name table above */
509 static const struct pci_device_id agp_via_pci_table[] = {
510 #define ID(x) \
511 { \
512 .class = (PCI_CLASS_BRIDGE_HOST << 8), \
513 .class_mask = ~0, \
514 .vendor = PCI_VENDOR_ID_VIA, \
515 .device = x, \
516 .subvendor = PCI_ANY_ID, \
517 .subdevice = PCI_ANY_ID, \
518 }
519 ID(PCI_DEVICE_ID_VIA_82C597_0),
520 ID(PCI_DEVICE_ID_VIA_82C598_0),
521 ID(PCI_DEVICE_ID_VIA_8501_0),
522 ID(PCI_DEVICE_ID_VIA_8601_0),
523 ID(PCI_DEVICE_ID_VIA_82C691_0),
524 ID(PCI_DEVICE_ID_VIA_8371_0),
525 ID(PCI_DEVICE_ID_VIA_8633_0),
526 ID(PCI_DEVICE_ID_VIA_XN266),
527 ID(PCI_DEVICE_ID_VIA_8361),
528 ID(PCI_DEVICE_ID_VIA_8363_0),
529 ID(PCI_DEVICE_ID_VIA_8753_0),
530 ID(PCI_DEVICE_ID_VIA_8367_0),
531 ID(PCI_DEVICE_ID_VIA_8653_0),
532 ID(PCI_DEVICE_ID_VIA_XM266),
533 ID(PCI_DEVICE_ID_VIA_862X_0),
534 ID(PCI_DEVICE_ID_VIA_8377_0),
535 ID(PCI_DEVICE_ID_VIA_8605_0),
536 ID(PCI_DEVICE_ID_VIA_8703_51_0),
537 ID(PCI_DEVICE_ID_VIA_8754C_0),
538 ID(PCI_DEVICE_ID_VIA_8763_0),
539 ID(PCI_DEVICE_ID_VIA_8378_0),
540 ID(PCI_DEVICE_ID_VIA_PT880),
541 ID(PCI_DEVICE_ID_VIA_PT880ULTRA),
542 ID(PCI_DEVICE_ID_VIA_8783_0),
543 ID(PCI_DEVICE_ID_VIA_PX8X0_0),
544 ID(PCI_DEVICE_ID_VIA_3269_0),
545 ID(PCI_DEVICE_ID_VIA_83_87XX_1),
546 ID(PCI_DEVICE_ID_VIA_3296_0),
547 ID(PCI_DEVICE_ID_VIA_P4M800CE),
548 ID(PCI_DEVICE_ID_VIA_VT3324),
549 ID(PCI_DEVICE_ID_VIA_VT3336),
550 ID(PCI_DEVICE_ID_VIA_P4M890),
551 { }
552 };
553
554 MODULE_DEVICE_TABLE(pci, agp_via_pci_table);
555
556
557 static struct pci_driver agp_via_pci_driver = {
558 .name = "agpgart-via",
559 .id_table = agp_via_pci_table,
560 .probe = agp_via_probe,
561 .remove = agp_via_remove,
562 #ifdef CONFIG_PM
563 .suspend = agp_via_suspend,
564 .resume = agp_via_resume,
565 #endif
566 };
567
568
569 static int __init agp_via_init(void)
570 {
571 if (agp_off)
572 return -EINVAL;
573 return pci_register_driver(&agp_via_pci_driver);
574 }
575
576 static void __exit agp_via_cleanup(void)
577 {
578 pci_unregister_driver(&agp_via_pci_driver);
579 }
580
581 module_init(agp_via_init);
582 module_exit(agp_via_cleanup);
583
584 MODULE_LICENSE("GPL");
585 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
586
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