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Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
[deliverable/linux.git] / drivers / char / agp / ali-agp.c
1 /*
2 * ALi 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 <asm/page.h> /* PAGE_SIZE */
11 #include "agp.h"
12
13 #define ALI_AGPCTRL 0xb8
14 #define ALI_ATTBASE 0xbc
15 #define ALI_TLBCTRL 0xc0
16 #define ALI_TAGCTRL 0xc4
17 #define ALI_CACHE_FLUSH_CTRL 0xD0
18 #define ALI_CACHE_FLUSH_ADDR_MASK 0xFFFFF000
19 #define ALI_CACHE_FLUSH_EN 0x100
20
21 static int ali_fetch_size(void)
22 {
23 int i;
24 u32 temp;
25 struct aper_size_info_32 *values;
26
27 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
28 temp &= ~(0xfffffff0);
29 values = A_SIZE_32(agp_bridge->driver->aperture_sizes);
30
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
40 return 0;
41 }
42
43 static void ali_tlbflush(struct agp_memory *mem)
44 {
45 u32 temp;
46
47 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
48 temp &= 0xfffffff0;
49 temp |= (1<<0 | 1<<1);
50 pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, temp);
51 }
52
53 static void ali_cleanup(void)
54 {
55 struct aper_size_info_32 *previous_size;
56 u32 temp;
57
58 previous_size = A_SIZE_32(agp_bridge->previous_size);
59
60 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
61 // clear tag
62 pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL,
63 ((temp & 0xffffff00) | 0x00000001|0x00000002));
64
65 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
66 pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE,
67 ((temp & 0x00000ff0) | previous_size->size_value));
68 }
69
70 static int ali_configure(void)
71 {
72 u32 temp;
73 struct aper_size_info_32 *current_size;
74
75 current_size = A_SIZE_32(agp_bridge->current_size);
76
77 /* aperture size and gatt addr */
78 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
79 temp = (((temp & 0x00000ff0) | (agp_bridge->gatt_bus_addr & 0xfffff000))
80 | (current_size->size_value & 0xf));
81 pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, temp);
82
83 /* tlb control */
84 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
85 pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, ((temp & 0xffffff00) | 0x00000010));
86
87 /* address to map to */
88 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
89 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
90
91 #if 0
92 if (agp_bridge->type == ALI_M1541) {
93 u32 nlvm_addr = 0;
94
95 switch (current_size->size_value) {
96 case 0: break;
97 case 1: nlvm_addr = 0x100000;break;
98 case 2: nlvm_addr = 0x200000;break;
99 case 3: nlvm_addr = 0x400000;break;
100 case 4: nlvm_addr = 0x800000;break;
101 case 6: nlvm_addr = 0x1000000;break;
102 case 7: nlvm_addr = 0x2000000;break;
103 case 8: nlvm_addr = 0x4000000;break;
104 case 9: nlvm_addr = 0x8000000;break;
105 case 10: nlvm_addr = 0x10000000;break;
106 default: break;
107 }
108 nlvm_addr--;
109 nlvm_addr&=0xfff00000;
110
111 nlvm_addr+= agp_bridge->gart_bus_addr;
112 nlvm_addr|=(agp_bridge->gart_bus_addr>>12);
113 printk(KERN_INFO PFX "nlvm top &base = %8x\n",nlvm_addr);
114 }
115 #endif
116
117 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
118 temp &= 0xffffff7f; //enable TLB
119 pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp);
120
121 return 0;
122 }
123
124
125 static void m1541_cache_flush(void)
126 {
127 int i, page_count;
128 u32 temp;
129
130 global_cache_flush();
131
132 page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order;
133 for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) {
134 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
135 &temp);
136 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
137 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
138 (agp_bridge->gatt_bus_addr + i)) |
139 ALI_CACHE_FLUSH_EN));
140 }
141 }
142
143 static void *m1541_alloc_page(struct agp_bridge_data *bridge)
144 {
145 void *addr = agp_generic_alloc_page(agp_bridge);
146 u32 temp;
147
148 global_flush_tlb();
149 if (!addr)
150 return NULL;
151
152 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
153 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
154 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
155 virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
156 return addr;
157 }
158
159 static void ali_destroy_page(void * addr)
160 {
161 if (addr) {
162 global_cache_flush(); /* is this really needed? --hch */
163 agp_generic_destroy_page(addr);
164 global_flush_tlb();
165 }
166 }
167
168 static void m1541_destroy_page(void * addr)
169 {
170 u32 temp;
171
172 if (addr == NULL)
173 return;
174
175 global_cache_flush();
176
177 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
178 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
179 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
180 virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
181 agp_generic_destroy_page(addr);
182 }
183
184
185 /* Setup function */
186
187 static const struct aper_size_info_32 ali_generic_sizes[7] =
188 {
189 {256, 65536, 6, 10},
190 {128, 32768, 5, 9},
191 {64, 16384, 4, 8},
192 {32, 8192, 3, 7},
193 {16, 4096, 2, 6},
194 {8, 2048, 1, 4},
195 {4, 1024, 0, 3}
196 };
197
198 static const struct agp_bridge_driver ali_generic_bridge = {
199 .owner = THIS_MODULE,
200 .aperture_sizes = ali_generic_sizes,
201 .size_type = U32_APER_SIZE,
202 .num_aperture_sizes = 7,
203 .configure = ali_configure,
204 .fetch_size = ali_fetch_size,
205 .cleanup = ali_cleanup,
206 .tlb_flush = ali_tlbflush,
207 .mask_memory = agp_generic_mask_memory,
208 .masks = NULL,
209 .agp_enable = agp_generic_enable,
210 .cache_flush = global_cache_flush,
211 .create_gatt_table = agp_generic_create_gatt_table,
212 .free_gatt_table = agp_generic_free_gatt_table,
213 .insert_memory = agp_generic_insert_memory,
214 .remove_memory = agp_generic_remove_memory,
215 .alloc_by_type = agp_generic_alloc_by_type,
216 .free_by_type = agp_generic_free_by_type,
217 .agp_alloc_page = agp_generic_alloc_page,
218 .agp_destroy_page = ali_destroy_page,
219 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
220 };
221
222 static const struct agp_bridge_driver ali_m1541_bridge = {
223 .owner = THIS_MODULE,
224 .aperture_sizes = ali_generic_sizes,
225 .size_type = U32_APER_SIZE,
226 .num_aperture_sizes = 7,
227 .configure = ali_configure,
228 .fetch_size = ali_fetch_size,
229 .cleanup = ali_cleanup,
230 .tlb_flush = ali_tlbflush,
231 .mask_memory = agp_generic_mask_memory,
232 .masks = NULL,
233 .agp_enable = agp_generic_enable,
234 .cache_flush = m1541_cache_flush,
235 .create_gatt_table = agp_generic_create_gatt_table,
236 .free_gatt_table = agp_generic_free_gatt_table,
237 .insert_memory = agp_generic_insert_memory,
238 .remove_memory = agp_generic_remove_memory,
239 .alloc_by_type = agp_generic_alloc_by_type,
240 .free_by_type = agp_generic_free_by_type,
241 .agp_alloc_page = m1541_alloc_page,
242 .agp_destroy_page = m1541_destroy_page,
243 .agp_type_to_mask_type = agp_generic_type_to_mask_type,
244 };
245
246
247 static struct agp_device_ids ali_agp_device_ids[] __devinitdata =
248 {
249 {
250 .device_id = PCI_DEVICE_ID_AL_M1541,
251 .chipset_name = "M1541",
252 },
253 {
254 .device_id = PCI_DEVICE_ID_AL_M1621,
255 .chipset_name = "M1621",
256 },
257 {
258 .device_id = PCI_DEVICE_ID_AL_M1631,
259 .chipset_name = "M1631",
260 },
261 {
262 .device_id = PCI_DEVICE_ID_AL_M1632,
263 .chipset_name = "M1632",
264 },
265 {
266 .device_id = PCI_DEVICE_ID_AL_M1641,
267 .chipset_name = "M1641",
268 },
269 {
270 .device_id = PCI_DEVICE_ID_AL_M1644,
271 .chipset_name = "M1644",
272 },
273 {
274 .device_id = PCI_DEVICE_ID_AL_M1647,
275 .chipset_name = "M1647",
276 },
277 {
278 .device_id = PCI_DEVICE_ID_AL_M1651,
279 .chipset_name = "M1651",
280 },
281 {
282 .device_id = PCI_DEVICE_ID_AL_M1671,
283 .chipset_name = "M1671",
284 },
285 {
286 .device_id = PCI_DEVICE_ID_AL_M1681,
287 .chipset_name = "M1681",
288 },
289 {
290 .device_id = PCI_DEVICE_ID_AL_M1683,
291 .chipset_name = "M1683",
292 },
293
294 { }, /* dummy final entry, always present */
295 };
296
297 static int __devinit agp_ali_probe(struct pci_dev *pdev,
298 const struct pci_device_id *ent)
299 {
300 struct agp_device_ids *devs = ali_agp_device_ids;
301 struct agp_bridge_data *bridge;
302 u8 hidden_1621_id, cap_ptr;
303 int j;
304
305 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
306 if (!cap_ptr)
307 return -ENODEV;
308
309 /* probe for known chipsets */
310 for (j = 0; devs[j].chipset_name; j++) {
311 if (pdev->device == devs[j].device_id)
312 goto found;
313 }
314
315 printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n",
316 pdev->device);
317 return -ENODEV;
318
319
320 found:
321 bridge = agp_alloc_bridge();
322 if (!bridge)
323 return -ENOMEM;
324
325 bridge->dev = pdev;
326 bridge->capndx = cap_ptr;
327
328 switch (pdev->device) {
329 case PCI_DEVICE_ID_AL_M1541:
330 bridge->driver = &ali_m1541_bridge;
331 break;
332 case PCI_DEVICE_ID_AL_M1621:
333 pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
334 switch (hidden_1621_id) {
335 case 0x31:
336 devs[j].chipset_name = "M1631";
337 break;
338 case 0x32:
339 devs[j].chipset_name = "M1632";
340 break;
341 case 0x41:
342 devs[j].chipset_name = "M1641";
343 break;
344 case 0x43:
345 devs[j].chipset_name = "M????";
346 break;
347 case 0x47:
348 devs[j].chipset_name = "M1647";
349 break;
350 case 0x51:
351 devs[j].chipset_name = "M1651";
352 break;
353 default:
354 break;
355 }
356 /*FALLTHROUGH*/
357 default:
358 bridge->driver = &ali_generic_bridge;
359 }
360
361 printk(KERN_INFO PFX "Detected ALi %s chipset\n",
362 devs[j].chipset_name);
363
364 /* Fill in the mode register */
365 pci_read_config_dword(pdev,
366 bridge->capndx+PCI_AGP_STATUS,
367 &bridge->mode);
368
369 pci_set_drvdata(pdev, bridge);
370 return agp_add_bridge(bridge);
371 }
372
373 static void __devexit agp_ali_remove(struct pci_dev *pdev)
374 {
375 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
376
377 agp_remove_bridge(bridge);
378 agp_put_bridge(bridge);
379 }
380
381 static struct pci_device_id agp_ali_pci_table[] = {
382 {
383 .class = (PCI_CLASS_BRIDGE_HOST << 8),
384 .class_mask = ~0,
385 .vendor = PCI_VENDOR_ID_AL,
386 .device = PCI_ANY_ID,
387 .subvendor = PCI_ANY_ID,
388 .subdevice = PCI_ANY_ID,
389 },
390 { }
391 };
392
393 MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);
394
395 static struct pci_driver agp_ali_pci_driver = {
396 .name = "agpgart-ali",
397 .id_table = agp_ali_pci_table,
398 .probe = agp_ali_probe,
399 .remove = agp_ali_remove,
400 };
401
402 static int __init agp_ali_init(void)
403 {
404 if (agp_off)
405 return -EINVAL;
406 return pci_register_driver(&agp_ali_pci_driver);
407 }
408
409 static void __exit agp_ali_cleanup(void)
410 {
411 pci_unregister_driver(&agp_ali_pci_driver);
412 }
413
414 module_init(agp_ali_init);
415 module_exit(agp_ali_cleanup);
416
417 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
418 MODULE_LICENSE("GPL and additional rights");
419
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