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Fix calculation in move_freepages_block for counting pages
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / char / agp / sis-agp.c
blobeb1a1c7381900dddec1d173ff530e0b24fe08c56
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
17 static int __devinitdata agp_sis_force_delay = 0;
18 static int __devinitdata agp_sis_agp_spec = -1;
19
20 static int sis_fetch_size(void)
21 {
22 u8 temp_size;
23 int i;
24 struct aper_size_info_8 *values;
25
26 pci_read_config_byte(agp_bridge->dev, SIS_APSIZE, &temp_size);
27 values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
28 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
29 if ((temp_size == values[i].size_value) ||
30 ((temp_size & ~(0x03)) ==
31 (values[i].size_value & ~(0x03)))) {
32 agp_bridge->previous_size =
33 agp_bridge->current_size = (void *) (values + i);
34
35 agp_bridge->aperture_size_idx = i;
36 return values[i].size;
37 }
38 }
39
40 return 0;
41 }
42
43 static void sis_tlbflush(struct agp_memory *mem)
44 {
45 pci_write_config_byte(agp_bridge->dev, SIS_TLBFLUSH, 0x02);
46 }
47
48 static int sis_configure(void)
49 {
50 u32 temp;
51 struct aper_size_info_8 *current_size;
52
53 current_size = A_SIZE_8(agp_bridge->current_size);
54 pci_write_config_byte(agp_bridge->dev, SIS_TLBCNTRL, 0x05);
55 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
56 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
57 pci_write_config_dword(agp_bridge->dev, SIS_ATTBASE,
58 agp_bridge->gatt_bus_addr);
59 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE,
60 current_size->size_value);
61 return 0;
62 }
63
64 static void sis_cleanup(void)
65 {
66 struct aper_size_info_8 *previous_size;
67
68 previous_size = A_SIZE_8(agp_bridge->previous_size);
69 pci_write_config_byte(agp_bridge->dev, SIS_APSIZE,
70 (previous_size->size_value & ~(0x03)));
71 }
72
73 static void sis_delayed_enable(struct agp_bridge_data *bridge, u32 mode)
74 {
75 struct pci_dev *device = NULL;
76 u32 command;
77 int rate;
78
79 printk(KERN_INFO PFX "Found an AGP %d.%d compliant device at %s.\n",
80 agp_bridge->major_version,
81 agp_bridge->minor_version,
82 pci_name(agp_bridge->dev));
83
84 pci_read_config_dword(agp_bridge->dev, agp_bridge->capndx + PCI_AGP_STATUS, &command);
85 command = agp_collect_device_status(bridge, mode, command);
86 command |= AGPSTAT_AGP_ENABLE;
87 rate = (command & 0x7) << 2;
88
89 for_each_pci_dev(device) {
90 u8 agp = pci_find_capability(device, PCI_CAP_ID_AGP);
91 if (!agp)
92 continue;
93
94 printk(KERN_INFO PFX "Putting AGP V3 device at %s into %dx mode\n",
95 pci_name(device), rate);
96
97 pci_write_config_dword(device, agp + PCI_AGP_COMMAND, command);
98
99 /*
100 * Weird: on some sis chipsets any rate change in the target
101 * command register triggers a 5ms screwup during which the master
102 * cannot be configured
103 */
104 if (device->device == bridge->dev->device) {
105 printk(KERN_INFO PFX "SiS delay workaround: giving bridge time to recover.\n");
106 msleep(10);
107 }
108 }
109 }
110
111 static const struct aper_size_info_8 sis_generic_sizes[7] =
112 {
113 {256, 65536, 6, 99},
114 {128, 32768, 5, 83},
115 {64, 16384, 4, 67},
116 {32, 8192, 3, 51},
117 {16, 4096, 2, 35},
118 {8, 2048, 1, 19},
119 {4, 1024, 0, 3}
120 };
121
122 static struct agp_bridge_driver sis_driver = {
123 .owner = THIS_MODULE,
124 .aperture_sizes = sis_generic_sizes,
125 .size_type = U8_APER_SIZE,
126 .num_aperture_sizes = 7,
127 .configure = sis_configure,
128 .fetch_size = sis_fetch_size,
129 .cleanup = sis_cleanup,
130 .tlb_flush = sis_tlbflush,
131 .mask_memory = agp_generic_mask_memory,
132 .masks = NULL,
133 .agp_enable = agp_generic_enable,
134 .cache_flush = global_cache_flush,
135 .create_gatt_table = agp_generic_create_gatt_table,
136 .free_gatt_table = agp_generic_free_gatt_table,
137 .insert_memory = agp_generic_insert_memory,
138 .remove_memory = agp_generic_remove_memory,
139 .alloc_by_type = agp_generic_alloc_by_type,
140 .free_by_type = agp_generic_free_by_type,
141 .agp_alloc_page = agp_generic_alloc_page,
142 .agp_destroy_page = agp_generic_destroy_page,
143 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
144 };
145
146 // chipsets that require the 'delay hack'
147 static int sis_broken_chipsets[] __devinitdata = {
148 PCI_DEVICE_ID_SI_648,
149 PCI_DEVICE_ID_SI_746,
150 0 // terminator
151 };
152
153 static void __devinit sis_get_driver(struct agp_bridge_data *bridge)
154 {
155 int i;
156
157 for (i=0; sis_broken_chipsets[i]!=0; ++i)
158 if (bridge->dev->device==sis_broken_chipsets[i])
159 break;
160
161 if (sis_broken_chipsets[i] || agp_sis_force_delay)
162 sis_driver.agp_enable=sis_delayed_enable;
163
164 // sis chipsets that indicate less than agp3.5
165 // are not actually fully agp3 compliant
166 if ((agp_bridge->major_version == 3 && agp_bridge->minor_version >= 5
167 && agp_sis_agp_spec!=0) || agp_sis_agp_spec==1) {
168 sis_driver.aperture_sizes = agp3_generic_sizes;
169 sis_driver.size_type = U16_APER_SIZE;
170 sis_driver.num_aperture_sizes = AGP_GENERIC_SIZES_ENTRIES;
171 sis_driver.configure = agp3_generic_configure;
172 sis_driver.fetch_size = agp3_generic_fetch_size;
173 sis_driver.cleanup = agp3_generic_cleanup;
174 sis_driver.tlb_flush = agp3_generic_tlbflush;
175 }
176 }
177
178
179 static int __devinit agp_sis_probe(struct pci_dev *pdev,
180 const struct pci_device_id *ent)
181 {
182 struct agp_bridge_data *bridge;
183 u8 cap_ptr;
184
185 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
186 if (!cap_ptr)
187 return -ENODEV;
188
189
190 printk(KERN_INFO PFX "Detected SiS chipset - id:%i\n", pdev->device);
191 bridge = agp_alloc_bridge();
192 if (!bridge)
193 return -ENOMEM;
194
195 bridge->driver = &sis_driver;
196 bridge->dev = pdev;
197 bridge->capndx = cap_ptr;
198
199 get_agp_version(bridge);
200
201 /* Fill in the mode register */
202 pci_read_config_dword(pdev, bridge->capndx+PCI_AGP_STATUS, &bridge->mode);
203 sis_get_driver(bridge);
204
205 pci_set_drvdata(pdev, bridge);
206 return agp_add_bridge(bridge);
207 }
208
209 static void __devexit agp_sis_remove(struct pci_dev *pdev)
210 {
211 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
212
213 agp_remove_bridge(bridge);
214 agp_put_bridge(bridge);
215 }
216
217 static struct pci_device_id agp_sis_pci_table[] = {
218 {
219 .class = (PCI_CLASS_BRIDGE_HOST << 8),
220 .class_mask = ~0,
221 .vendor = PCI_VENDOR_ID_SI,
222 .device = PCI_DEVICE_ID_SI_5591_AGP,
223 .subvendor = PCI_ANY_ID,
224 .subdevice = PCI_ANY_ID,
225 },
226 {
227 .class = (PCI_CLASS_BRIDGE_HOST << 8),
228 .class_mask = ~0,
229 .vendor = PCI_VENDOR_ID_SI,
230 .device = PCI_DEVICE_ID_SI_530,
231 .subvendor = PCI_ANY_ID,
232 .subdevice = PCI_ANY_ID,
233 },
234 {
235 .class = (PCI_CLASS_BRIDGE_HOST << 8),
236 .class_mask = ~0,
237 .vendor = PCI_VENDOR_ID_SI,
238 .device = PCI_DEVICE_ID_SI_540,
239 .subvendor = PCI_ANY_ID,
240 .subdevice = PCI_ANY_ID,
241 },
242 {
243 .class = (PCI_CLASS_BRIDGE_HOST << 8),
244 .class_mask = ~0,
245 .vendor = PCI_VENDOR_ID_SI,
246 .device = PCI_DEVICE_ID_SI_550,
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_620,
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_630,
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_635,
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_645,
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_646,
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_648,
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_650,
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_651,
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_655,
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_661,
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_730,
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_735,
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_740,
351 .subvendor = PCI_ANY_ID,
352 .subdevice = PCI_ANY_ID,
353 },
354 {
355 .class = (PCI_CLASS_BRIDGE_HOST << 8),
356 .class_mask = ~0,
357 .vendor = PCI_VENDOR_ID_SI,
358 .device = PCI_DEVICE_ID_SI_741,
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_745,
367 .subvendor = PCI_ANY_ID,
368 .subdevice = PCI_ANY_ID,
369 },
370 {
371 .class = (PCI_CLASS_BRIDGE_HOST << 8),
372 .class_mask = ~0,
373 .vendor = PCI_VENDOR_ID_SI,
374 .device = PCI_DEVICE_ID_SI_746,
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_760,
383 .subvendor = PCI_ANY_ID,
384 .subdevice = PCI_ANY_ID,
385 },
386 { }
387 };
388
389 MODULE_DEVICE_TABLE(pci, agp_sis_pci_table);
390
391 static struct pci_driver agp_sis_pci_driver = {
392 .name = "agpgart-sis",
393 .id_table = agp_sis_pci_table,
394 .probe = agp_sis_probe,
395 .remove = agp_sis_remove,
396 };
397
398 static int __init agp_sis_init(void)
399 {
400 if (agp_off)
401 return -EINVAL;
402 return pci_register_driver(&agp_sis_pci_driver);
403 }
404
405 static void __exit agp_sis_cleanup(void)
406 {
407 pci_unregister_driver(&agp_sis_pci_driver);
408 }
409
410 module_init(agp_sis_init);
411 module_exit(agp_sis_cleanup);
412
413 module_param(agp_sis_force_delay, bool, 0);
414 MODULE_PARM_DESC(agp_sis_force_delay,"forces sis delay hack");
415 module_param(agp_sis_agp_spec, int, 0);
416 MODULE_PARM_DESC(agp_sis_agp_spec,"0=force sis init, 1=force generic agp3 init, default: autodetect");
417 MODULE_LICENSE("GPL and additional rights");
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