Char: ipmi_bt_sm, fix infinite loop
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / char / agp / sis-agp.c
CommitLineData
1da177e4
LT
1/*
2 * SiS AGPGART routines.
3 */
4
5#include <linux/module.h>
6#include <linux/pci.h>
7#include <linux/init.h>
8#include <linux/agp_backend.h>
9#include <linux/delay.h>
10#include "agp.h"
11
12#define SIS_ATTBASE 0x90
13#define SIS_APSIZE 0x94
14#define SIS_TLBCNTRL 0x97
15#define SIS_TLBFLUSH 0x98
16
2e374748
CC
17#define PCI_DEVICE_ID_SI_662 0x0662
18#define PCI_DEVICE_ID_SI_671 0x0671
19
0bbed20e
BP
20static bool agp_sis_force_delay = 0;
21static int agp_sis_agp_spec = -1;
1da177e4
LT
22
23static int sis_fetch_size(void)
24{
25 u8 temp_size;
26 int i;
27 struct aper_size_info_8 *values;
28
29 pci_read_config_byte(agp_bridge->dev, SIS_APSIZE, &temp_size);
30 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
31 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
32 if ((temp_size == values[i].size_value) ||
b7d0640f
SB
33 ((temp_size & ~(0x07)) ==
34 (values[i].size_value & ~(0x07)))) {
1da177e4
LT
35 agp_bridge->previous_size =
36 agp_bridge->current_size = (void *) (values + i);
37
38 agp_bridge->aperture_size_idx = i;
39 return values[i].size;
40 }
41 }
42
43 return 0;
44}
45
46static void sis_tlbflush(struct agp_memory *mem)
47{
48 pci_write_config_byte(agp_bridge->dev, SIS_TLBFLUSH, 0x02);
49}
50
51static int sis_configure(void)
52{
53 u32 temp;
54 struct aper_size_info_8 *current_size;
55
56 current_size = A_SIZE_8(agp_bridge->current_size);
57 pci_write_config_byte(agp_bridge->dev, SIS_TLBCNTRL, 0x05);
58 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
59 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
60 pci_write_config_dword(agp_bridge->dev, SIS_ATTBASE,
61 agp_bridge->gatt_bus_addr);
62 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE,
63 current_size->size_value);
64 return 0;
65}
66
67static void sis_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, SIS_APSIZE,
73 (previous_size->size_value & ~(0x03)));
74}
75
76static void sis_delayed_enable(struct agp_bridge_data *bridge, u32 mode)
77{
78 struct pci_dev *device = NULL;
79 u32 command;
80 int rate;
81
e3cf6951
BH
82 dev_info(&agp_bridge->dev->dev, "AGP %d.%d bridge\n",
83 agp_bridge->major_version, agp_bridge->minor_version);
1da177e4
LT
84
85 pci_read_config_dword(agp_bridge->dev, agp_bridge->capndx + PCI_AGP_STATUS, &command);
86 command = agp_collect_device_status(bridge, mode, command);
87 command |= AGPSTAT_AGP_ENABLE;
88 rate = (command & 0x7) << 2;
89
90 for_each_pci_dev(device) {
91 u8 agp = pci_find_capability(device, PCI_CAP_ID_AGP);
92 if (!agp)
93 continue;
94
e3cf6951
BH
95 dev_info(&agp_bridge->dev->dev, "putting AGP V3 device at %s into %dx mode\n",
96 pci_name(device), rate);
1da177e4
LT
97
98 pci_write_config_dword(device, agp + PCI_AGP_COMMAND, command);
99
100 /*
101 * Weird: on some sis chipsets any rate change in the target
102 * command register triggers a 5ms screwup during which the master
103 * cannot be configured
104 */
105 if (device->device == bridge->dev->device) {
e3cf6951 106 dev_info(&agp_bridge->dev->dev, "SiS delay workaround: giving bridge time to recover\n");
1da177e4
LT
107 msleep(10);
108 }
109 }
110}
111
e5524f35 112static const struct aper_size_info_8 sis_generic_sizes[7] =
1da177e4
LT
113{
114 {256, 65536, 6, 99},
115 {128, 32768, 5, 83},
116 {64, 16384, 4, 67},
117 {32, 8192, 3, 51},
118 {16, 4096, 2, 35},
119 {8, 2048, 1, 19},
120 {4, 1024, 0, 3}
121};
122
408b664a 123static struct agp_bridge_driver sis_driver = {
1da177e4 124 .owner = THIS_MODULE,
6a92a4e0 125 .aperture_sizes = sis_generic_sizes,
1da177e4
LT
126 .size_type = U8_APER_SIZE,
127 .num_aperture_sizes = 7,
61cf0593 128 .needs_scratch_page = true,
1da177e4
LT
129 .configure = sis_configure,
130 .fetch_size = sis_fetch_size,
131 .cleanup = sis_cleanup,
132 .tlb_flush = sis_tlbflush,
133 .mask_memory = agp_generic_mask_memory,
134 .masks = NULL,
135 .agp_enable = agp_generic_enable,
136 .cache_flush = global_cache_flush,
137 .create_gatt_table = agp_generic_create_gatt_table,
138 .free_gatt_table = agp_generic_free_gatt_table,
139 .insert_memory = agp_generic_insert_memory,
140 .remove_memory = agp_generic_remove_memory,
141 .alloc_by_type = agp_generic_alloc_by_type,
142 .free_by_type = agp_generic_free_by_type,
143 .agp_alloc_page = agp_generic_alloc_page,
5f310b63 144 .agp_alloc_pages = agp_generic_alloc_pages,
1da177e4 145 .agp_destroy_page = agp_generic_destroy_page,
5f310b63 146 .agp_destroy_pages = agp_generic_destroy_pages,
bf1e5989 147 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
1da177e4
LT
148};
149
1da177e4 150// chipsets that require the 'delay hack'
0bbed20e 151static int sis_broken_chipsets[] = {
1da177e4
LT
152 PCI_DEVICE_ID_SI_648,
153 PCI_DEVICE_ID_SI_746,
154 0 // terminator
155};
156
bcd2982a 157static void sis_get_driver(struct agp_bridge_data *bridge)
1da177e4
LT
158{
159 int i;
160
6a92a4e0
DJ
161 for (i=0; sis_broken_chipsets[i]!=0; ++i)
162 if (bridge->dev->device==sis_broken_chipsets[i])
1da177e4
LT
163 break;
164
6a92a4e0 165 if (sis_broken_chipsets[i] || agp_sis_force_delay)
1da177e4
LT
166 sis_driver.agp_enable=sis_delayed_enable;
167
168 // sis chipsets that indicate less than agp3.5
169 // are not actually fully agp3 compliant
170 if ((agp_bridge->major_version == 3 && agp_bridge->minor_version >= 5
171 && agp_sis_agp_spec!=0) || agp_sis_agp_spec==1) {
172 sis_driver.aperture_sizes = agp3_generic_sizes;
173 sis_driver.size_type = U16_APER_SIZE;
174 sis_driver.num_aperture_sizes = AGP_GENERIC_SIZES_ENTRIES;
175 sis_driver.configure = agp3_generic_configure;
176 sis_driver.fetch_size = agp3_generic_fetch_size;
177 sis_driver.cleanup = agp3_generic_cleanup;
178 sis_driver.tlb_flush = agp3_generic_tlbflush;
179 }
180}
181
182
bcd2982a 183static int agp_sis_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1da177e4 184{
1da177e4
LT
185 struct agp_bridge_data *bridge;
186 u8 cap_ptr;
1da177e4
LT
187
188 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
189 if (!cap_ptr)
190 return -ENODEV;
191
1da177e4 192
e3cf6951
BH
193 dev_info(&pdev->dev, "SiS chipset [%04x/%04x]\n",
194 pdev->vendor, pdev->device);
1da177e4
LT
195 bridge = agp_alloc_bridge();
196 if (!bridge)
197 return -ENOMEM;
198
199 bridge->driver = &sis_driver;
200 bridge->dev = pdev;
201 bridge->capndx = cap_ptr;
202
203 get_agp_version(bridge);
204
205 /* Fill in the mode register */
206 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
207 sis_get_driver(bridge);
208
209 pci_set_drvdata(pdev, bridge);
210 return agp_add_bridge(bridge);
211}
212
39af33fc 213static void agp_sis_remove(struct pci_dev *pdev)
1da177e4
LT
214{
215 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
216
217 agp_remove_bridge(bridge);
218 agp_put_bridge(bridge);
219}
220
16469a0e
SB
221#ifdef CONFIG_PM
222
223static int agp_sis_suspend(struct pci_dev *pdev, pm_message_t state)
224{
225 pci_save_state(pdev);
226 pci_set_power_state(pdev, pci_choose_state(pdev, state));
227
228 return 0;
229}
230
231static int agp_sis_resume(struct pci_dev *pdev)
232{
233 pci_set_power_state(pdev, PCI_D0);
234 pci_restore_state(pdev);
235
236 return sis_driver.configure();
237}
238
239#endif /* CONFIG_PM */
240
1da177e4
LT
241static struct pci_device_id agp_sis_pci_table[] = {
242 {
82eab130
ON
243 .class = (PCI_CLASS_BRIDGE_HOST << 8),
244 .class_mask = ~0,
245 .vendor = PCI_VENDOR_ID_SI,
91397585 246 .device = PCI_DEVICE_ID_SI_5591,
82eab130
ON
247 .subvendor = PCI_ANY_ID,
248 .subdevice = PCI_ANY_ID,
249 },
250 {
251 .class = (PCI_CLASS_BRIDGE_HOST << 8),
252 .class_mask = ~0,
253 .vendor = PCI_VENDOR_ID_SI,
254 .device = PCI_DEVICE_ID_SI_530,
255 .subvendor = PCI_ANY_ID,
256 .subdevice = PCI_ANY_ID,
257 },
258 {
259 .class = (PCI_CLASS_BRIDGE_HOST << 8),
260 .class_mask = ~0,
261 .vendor = PCI_VENDOR_ID_SI,
262 .device = PCI_DEVICE_ID_SI_540,
263 .subvendor = PCI_ANY_ID,
264 .subdevice = PCI_ANY_ID,
265 },
266 {
267 .class = (PCI_CLASS_BRIDGE_HOST << 8),
268 .class_mask = ~0,
269 .vendor = PCI_VENDOR_ID_SI,
270 .device = PCI_DEVICE_ID_SI_550,
271 .subvendor = PCI_ANY_ID,
272 .subdevice = PCI_ANY_ID,
273 },
274 {
275 .class = (PCI_CLASS_BRIDGE_HOST << 8),
276 .class_mask = ~0,
277 .vendor = PCI_VENDOR_ID_SI,
278 .device = PCI_DEVICE_ID_SI_620,
279 .subvendor = PCI_ANY_ID,
280 .subdevice = PCI_ANY_ID,
281 },
282 {
283 .class = (PCI_CLASS_BRIDGE_HOST << 8),
284 .class_mask = ~0,
285 .vendor = PCI_VENDOR_ID_SI,
286 .device = PCI_DEVICE_ID_SI_630,
287 .subvendor = PCI_ANY_ID,
288 .subdevice = PCI_ANY_ID,
289 },
290 {
291 .class = (PCI_CLASS_BRIDGE_HOST << 8),
292 .class_mask = ~0,
293 .vendor = PCI_VENDOR_ID_SI,
294 .device = PCI_DEVICE_ID_SI_635,
295 .subvendor = PCI_ANY_ID,
296 .subdevice = PCI_ANY_ID,
297 },
298 {
299 .class = (PCI_CLASS_BRIDGE_HOST << 8),
300 .class_mask = ~0,
301 .vendor = PCI_VENDOR_ID_SI,
302 .device = PCI_DEVICE_ID_SI_645,
303 .subvendor = PCI_ANY_ID,
304 .subdevice = PCI_ANY_ID,
305 },
306 {
307 .class = (PCI_CLASS_BRIDGE_HOST << 8),
308 .class_mask = ~0,
309 .vendor = PCI_VENDOR_ID_SI,
310 .device = PCI_DEVICE_ID_SI_646,
311 .subvendor = PCI_ANY_ID,
312 .subdevice = PCI_ANY_ID,
313 },
314 {
315 .class = (PCI_CLASS_BRIDGE_HOST << 8),
316 .class_mask = ~0,
317 .vendor = PCI_VENDOR_ID_SI,
318 .device = PCI_DEVICE_ID_SI_648,
319 .subvendor = PCI_ANY_ID,
320 .subdevice = PCI_ANY_ID,
321 },
322 {
323 .class = (PCI_CLASS_BRIDGE_HOST << 8),
324 .class_mask = ~0,
325 .vendor = PCI_VENDOR_ID_SI,
326 .device = PCI_DEVICE_ID_SI_650,
327 .subvendor = PCI_ANY_ID,
328 .subdevice = PCI_ANY_ID,
329 },
330 {
331 .class = (PCI_CLASS_BRIDGE_HOST << 8),
332 .class_mask = ~0,
333 .vendor = PCI_VENDOR_ID_SI,
334 .device = PCI_DEVICE_ID_SI_651,
335 .subvendor = PCI_ANY_ID,
336 .subdevice = PCI_ANY_ID,
337 },
338 {
339 .class = (PCI_CLASS_BRIDGE_HOST << 8),
340 .class_mask = ~0,
341 .vendor = PCI_VENDOR_ID_SI,
342 .device = PCI_DEVICE_ID_SI_655,
343 .subvendor = PCI_ANY_ID,
344 .subdevice = PCI_ANY_ID,
345 },
346 {
347 .class = (PCI_CLASS_BRIDGE_HOST << 8),
348 .class_mask = ~0,
349 .vendor = PCI_VENDOR_ID_SI,
350 .device = PCI_DEVICE_ID_SI_661,
351 .subvendor = PCI_ANY_ID,
352 .subdevice = PCI_ANY_ID,
353 },
2e374748
CC
354 {
355 .class = (PCI_CLASS_BRIDGE_HOST << 8),
356 .class_mask = ~0,
357 .vendor = PCI_VENDOR_ID_SI,
358 .device = PCI_DEVICE_ID_SI_662,
359 .subvendor = PCI_ANY_ID,
360 .subdevice = PCI_ANY_ID,
361 },
362 {
363 .class = (PCI_CLASS_BRIDGE_HOST << 8),
364 .class_mask = ~0,
365 .vendor = PCI_VENDOR_ID_SI,
366 .device = PCI_DEVICE_ID_SI_671,
367 .subvendor = PCI_ANY_ID,
368 .subdevice = PCI_ANY_ID,
369 },
82eab130
ON
370 {
371 .class = (PCI_CLASS_BRIDGE_HOST << 8),
372 .class_mask = ~0,
373 .vendor = PCI_VENDOR_ID_SI,
374 .device = PCI_DEVICE_ID_SI_730,
375 .subvendor = PCI_ANY_ID,
376 .subdevice = PCI_ANY_ID,
377 },
378 {
379 .class = (PCI_CLASS_BRIDGE_HOST << 8),
380 .class_mask = ~0,
381 .vendor = PCI_VENDOR_ID_SI,
382 .device = PCI_DEVICE_ID_SI_735,
383 .subvendor = PCI_ANY_ID,
384 .subdevice = PCI_ANY_ID,
385 },
386 {
387 .class = (PCI_CLASS_BRIDGE_HOST << 8),
388 .class_mask = ~0,
389 .vendor = PCI_VENDOR_ID_SI,
390 .device = PCI_DEVICE_ID_SI_740,
391 .subvendor = PCI_ANY_ID,
392 .subdevice = PCI_ANY_ID,
393 },
394 {
395 .class = (PCI_CLASS_BRIDGE_HOST << 8),
396 .class_mask = ~0,
397 .vendor = PCI_VENDOR_ID_SI,
398 .device = PCI_DEVICE_ID_SI_741,
399 .subvendor = PCI_ANY_ID,
400 .subdevice = PCI_ANY_ID,
401 },
402 {
403 .class = (PCI_CLASS_BRIDGE_HOST << 8),
404 .class_mask = ~0,
405 .vendor = PCI_VENDOR_ID_SI,
406 .device = PCI_DEVICE_ID_SI_745,
407 .subvendor = PCI_ANY_ID,
408 .subdevice = PCI_ANY_ID,
409 },
410 {
411 .class = (PCI_CLASS_BRIDGE_HOST << 8),
412 .class_mask = ~0,
413 .vendor = PCI_VENDOR_ID_SI,
414 .device = PCI_DEVICE_ID_SI_746,
415 .subvendor = PCI_ANY_ID,
416 .subdevice = PCI_ANY_ID,
417 },
1da177e4
LT
418 { }
419};
420
421MODULE_DEVICE_TABLE(pci, agp_sis_pci_table);
422
423static struct pci_driver agp_sis_pci_driver = {
424 .name = "agpgart-sis",
425 .id_table = agp_sis_pci_table,
426 .probe = agp_sis_probe,
427 .remove = agp_sis_remove,
16469a0e
SB
428#ifdef CONFIG_PM
429 .suspend = agp_sis_suspend,
430 .resume = agp_sis_resume,
431#endif
1da177e4
LT
432};
433
434static int __init agp_sis_init(void)
435{
436 if (agp_off)
437 return -EINVAL;
438 return pci_register_driver(&agp_sis_pci_driver);
439}
440
441static void __exit agp_sis_cleanup(void)
442{
443 pci_unregister_driver(&agp_sis_pci_driver);
444}
445
446module_init(agp_sis_init);
447module_exit(agp_sis_cleanup);
448
449module_param(agp_sis_force_delay, bool, 0);
450MODULE_PARM_DESC(agp_sis_force_delay,"forces sis delay hack");
451module_param(agp_sis_agp_spec, int, 0);
452MODULE_PARM_DESC(agp_sis_agp_spec,"0=force sis init, 1=force generic agp3 init, default: autodetect");
453MODULE_LICENSE("GPL and additional rights");