Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[linux-2.6] / drivers / char / agp / via-agp.c
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 - this is a chipset for AMD Athlon/K8 CPU. Due to K8's unique
393          * architecture, the AGP resource and behavior are different from
394          * the traditional AGP which resides only in chipset. AGP is used
395          * by 3D driver which wasn't available for the VT3336 and VT3364
396          * generation until now.  Unfortunately, by testing, VT3364 works
397          * but VT3336 doesn't. - explaination from via, just leave this as
398          * as a placeholder to avoid future patches adding it back in.
399          */
400 #if 0
401         {
402                 .device_id  = PCI_DEVICE_ID_VIA_VT3336,
403                 .chipset_name   = "VT3336",
404         },
405 #endif
406         /* P4M890 */
407         {
408                 .device_id  = PCI_DEVICE_ID_VIA_P4M890,
409                 .chipset_name   = "P4M890",
410         },
411         /* P4M900 */
412         {
413                 .device_id  = PCI_DEVICE_ID_VIA_VT3364,
414                 .chipset_name   = "P4M900",
415         },
416         { }, /* dummy final entry, always present */
417 };
418
419
420 /*
421  * VIA's AGP3 chipsets do magick to put the AGP bridge compliant
422  * with the same standards version as the graphics card.
423  */
424 static void check_via_agp3 (struct agp_bridge_data *bridge)
425 {
426         u8 reg;
427
428         pci_read_config_byte(bridge->dev, VIA_AGPSEL, &reg);
429         /* Check AGP 2.0 compatibility mode. */
430         if ((reg & (1<<1))==0)
431                 bridge->driver = &via_agp3_driver;
432 }
433
434
435 static int __devinit agp_via_probe(struct pci_dev *pdev,
436                                    const struct pci_device_id *ent)
437 {
438         struct agp_device_ids *devs = via_agp_device_ids;
439         struct agp_bridge_data *bridge;
440         int j = 0;
441         u8 cap_ptr;
442
443         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
444         if (!cap_ptr)
445                 return -ENODEV;
446
447         j = ent - agp_via_pci_table;
448         printk (KERN_INFO PFX "Detected VIA %s chipset\n", devs[j].chipset_name);
449
450         bridge = agp_alloc_bridge();
451         if (!bridge)
452                 return -ENOMEM;
453
454         bridge->dev = pdev;
455         bridge->capndx = cap_ptr;
456         bridge->driver = &via_driver;
457
458         /*
459          * Garg, there are KT400s with KT266 IDs.
460          */
461         if (pdev->device == PCI_DEVICE_ID_VIA_8367_0) {
462                 /* Is there a KT400 subsystem ? */
463                 if (pdev->subsystem_device == PCI_DEVICE_ID_VIA_8377_0) {
464                         printk(KERN_INFO PFX "Found KT400 in disguise as a KT266.\n");
465                         check_via_agp3(bridge);
466                 }
467         }
468
469         /* If this is an AGP3 bridge, check which mode its in and adjust. */
470         get_agp_version(bridge);
471         if (bridge->major_version >= 3)
472                 check_via_agp3(bridge);
473
474         /* Fill in the mode register */
475         pci_read_config_dword(pdev,
476                         bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
477
478         pci_set_drvdata(pdev, bridge);
479         return agp_add_bridge(bridge);
480 }
481
482 static void __devexit agp_via_remove(struct pci_dev *pdev)
483 {
484         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
485
486         agp_remove_bridge(bridge);
487         agp_put_bridge(bridge);
488 }
489
490 #ifdef CONFIG_PM
491
492 static int agp_via_suspend(struct pci_dev *pdev, pm_message_t state)
493 {
494         pci_save_state (pdev);
495         pci_set_power_state (pdev, PCI_D3hot);
496
497         return 0;
498 }
499
500 static int agp_via_resume(struct pci_dev *pdev)
501 {
502         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
503
504         pci_set_power_state (pdev, PCI_D0);
505         pci_restore_state(pdev);
506
507         if (bridge->driver == &via_agp3_driver)
508                 return via_configure_agp3();
509         else if (bridge->driver == &via_driver)
510                 return via_configure();
511
512         return 0;
513 }
514
515 #endif /* CONFIG_PM */
516
517 /* must be the same order as name table above */
518 static const struct pci_device_id agp_via_pci_table[] = {
519 #define ID(x) \
520         {                                               \
521         .class          = (PCI_CLASS_BRIDGE_HOST << 8), \
522         .class_mask     = ~0,                           \
523         .vendor         = PCI_VENDOR_ID_VIA,            \
524         .device         = x,                            \
525         .subvendor      = PCI_ANY_ID,                   \
526         .subdevice      = PCI_ANY_ID,                   \
527         }
528         ID(PCI_DEVICE_ID_VIA_82C597_0),
529         ID(PCI_DEVICE_ID_VIA_82C598_0),
530         ID(PCI_DEVICE_ID_VIA_8501_0),
531         ID(PCI_DEVICE_ID_VIA_8601_0),
532         ID(PCI_DEVICE_ID_VIA_82C691_0),
533         ID(PCI_DEVICE_ID_VIA_8371_0),
534         ID(PCI_DEVICE_ID_VIA_8633_0),
535         ID(PCI_DEVICE_ID_VIA_XN266),
536         ID(PCI_DEVICE_ID_VIA_8361),
537         ID(PCI_DEVICE_ID_VIA_8363_0),
538         ID(PCI_DEVICE_ID_VIA_8753_0),
539         ID(PCI_DEVICE_ID_VIA_8367_0),
540         ID(PCI_DEVICE_ID_VIA_8653_0),
541         ID(PCI_DEVICE_ID_VIA_XM266),
542         ID(PCI_DEVICE_ID_VIA_862X_0),
543         ID(PCI_DEVICE_ID_VIA_8377_0),
544         ID(PCI_DEVICE_ID_VIA_8605_0),
545         ID(PCI_DEVICE_ID_VIA_8703_51_0),
546         ID(PCI_DEVICE_ID_VIA_8754C_0),
547         ID(PCI_DEVICE_ID_VIA_8763_0),
548         ID(PCI_DEVICE_ID_VIA_8378_0),
549         ID(PCI_DEVICE_ID_VIA_PT880),
550         ID(PCI_DEVICE_ID_VIA_PT880ULTRA),
551         ID(PCI_DEVICE_ID_VIA_8783_0),
552         ID(PCI_DEVICE_ID_VIA_PX8X0_0),
553         ID(PCI_DEVICE_ID_VIA_3269_0),
554         ID(PCI_DEVICE_ID_VIA_83_87XX_1),
555         ID(PCI_DEVICE_ID_VIA_3296_0),
556         ID(PCI_DEVICE_ID_VIA_P4M800CE),
557         ID(PCI_DEVICE_ID_VIA_VT3324),
558         ID(PCI_DEVICE_ID_VIA_P4M890),
559         ID(PCI_DEVICE_ID_VIA_VT3364),
560         { }
561 };
562
563 MODULE_DEVICE_TABLE(pci, agp_via_pci_table);
564
565
566 static struct pci_driver agp_via_pci_driver = {
567         .name           = "agpgart-via",
568         .id_table       = agp_via_pci_table,
569         .probe          = agp_via_probe,
570         .remove         = agp_via_remove,
571 #ifdef CONFIG_PM
572         .suspend        = agp_via_suspend,
573         .resume         = agp_via_resume,
574 #endif
575 };
576
577
578 static int __init agp_via_init(void)
579 {
580         if (agp_off)
581                 return -EINVAL;
582         return pci_register_driver(&agp_via_pci_driver);
583 }
584
585 static void __exit agp_via_cleanup(void)
586 {
587         pci_unregister_driver(&agp_via_pci_driver);
588 }
589
590 module_init(agp_via_init);
591 module_exit(agp_via_cleanup);
592
593 MODULE_LICENSE("GPL");
594 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");