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[AGPGART] Lots of CodingStyle/whitespace cleanups.
[linux-2.6/openmoko-kernel/knife-kernel.git] / drivers / char / agp / ali-agp.c
blob5a31ec7c62fc40bd8fc213fd5fb69961971d82db
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 if (!addr)
149 return NULL;
150
151 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
152 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
153 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
154 virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN ));
155 return addr;
156 }
157
158 static void ali_destroy_page(void * addr)
159 {
160 if (addr) {
161 global_cache_flush(); /* is this really needed? --hch */
162 agp_generic_destroy_page(addr);
163 }
164 }
165
166 static void m1541_destroy_page(void * addr)
167 {
168 u32 temp;
169
170 if (addr == NULL)
171 return;
172
173 global_cache_flush();
174
175 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
176 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
177 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
178 virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
179 agp_generic_destroy_page(addr);
180 }
181
182
183 /* Setup function */
184
185 static struct aper_size_info_32 ali_generic_sizes[7] =
186 {
187 {256, 65536, 6, 10},
188 {128, 32768, 5, 9},
189 {64, 16384, 4, 8},
190 {32, 8192, 3, 7},
191 {16, 4096, 2, 6},
192 {8, 2048, 1, 4},
193 {4, 1024, 0, 3}
194 };
195
196 static struct agp_bridge_driver ali_generic_bridge = {
197 .owner = THIS_MODULE,
198 .aperture_sizes = ali_generic_sizes,
199 .size_type = U32_APER_SIZE,
200 .num_aperture_sizes = 7,
201 .configure = ali_configure,
202 .fetch_size = ali_fetch_size,
203 .cleanup = ali_cleanup,
204 .tlb_flush = ali_tlbflush,
205 .mask_memory = agp_generic_mask_memory,
206 .masks = NULL,
207 .agp_enable = agp_generic_enable,
208 .cache_flush = global_cache_flush,
209 .create_gatt_table = agp_generic_create_gatt_table,
210 .free_gatt_table = agp_generic_free_gatt_table,
211 .insert_memory = agp_generic_insert_memory,
212 .remove_memory = agp_generic_remove_memory,
213 .alloc_by_type = agp_generic_alloc_by_type,
214 .free_by_type = agp_generic_free_by_type,
215 .agp_alloc_page = agp_generic_alloc_page,
216 .agp_destroy_page = ali_destroy_page,
217 };
218
219 static struct agp_bridge_driver ali_m1541_bridge = {
220 .owner = THIS_MODULE,
221 .aperture_sizes = ali_generic_sizes,
222 .size_type = U32_APER_SIZE,
223 .num_aperture_sizes = 7,
224 .configure = ali_configure,
225 .fetch_size = ali_fetch_size,
226 .cleanup = ali_cleanup,
227 .tlb_flush = ali_tlbflush,
228 .mask_memory = agp_generic_mask_memory,
229 .masks = NULL,
230 .agp_enable = agp_generic_enable,
231 .cache_flush = m1541_cache_flush,
232 .create_gatt_table = agp_generic_create_gatt_table,
233 .free_gatt_table = agp_generic_free_gatt_table,
234 .insert_memory = agp_generic_insert_memory,
235 .remove_memory = agp_generic_remove_memory,
236 .alloc_by_type = agp_generic_alloc_by_type,
237 .free_by_type = agp_generic_free_by_type,
238 .agp_alloc_page = m1541_alloc_page,
239 .agp_destroy_page = m1541_destroy_page,
240 };
241
242
243 static struct agp_device_ids ali_agp_device_ids[] __devinitdata =
244 {
245 {
246 .device_id = PCI_DEVICE_ID_AL_M1541,
247 .chipset_name = "M1541",
248 },
249 {
250 .device_id = PCI_DEVICE_ID_AL_M1621,
251 .chipset_name = "M1621",
252 },
253 {
254 .device_id = PCI_DEVICE_ID_AL_M1631,
255 .chipset_name = "M1631",
256 },
257 {
258 .device_id = PCI_DEVICE_ID_AL_M1632,
259 .chipset_name = "M1632",
260 },
261 {
262 .device_id = PCI_DEVICE_ID_AL_M1641,
263 .chipset_name = "M1641",
264 },
265 {
266 .device_id = PCI_DEVICE_ID_AL_M1644,
267 .chipset_name = "M1644",
268 },
269 {
270 .device_id = PCI_DEVICE_ID_AL_M1647,
271 .chipset_name = "M1647",
272 },
273 {
274 .device_id = PCI_DEVICE_ID_AL_M1651,
275 .chipset_name = "M1651",
276 },
277 {
278 .device_id = PCI_DEVICE_ID_AL_M1671,
279 .chipset_name = "M1671",
280 },
281 {
282 .device_id = PCI_DEVICE_ID_AL_M1681,
283 .chipset_name = "M1681",
284 },
285 {
286 .device_id = PCI_DEVICE_ID_AL_M1683,
287 .chipset_name = "M1683",
288 },
289
290 { }, /* dummy final entry, always present */
291 };
292
293 static int __devinit agp_ali_probe(struct pci_dev *pdev,
294 const struct pci_device_id *ent)
295 {
296 struct agp_device_ids *devs = ali_agp_device_ids;
297 struct agp_bridge_data *bridge;
298 u8 hidden_1621_id, cap_ptr;
299 int j;
300
301 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
302 if (!cap_ptr)
303 return -ENODEV;
304
305 /* probe for known chipsets */
306 for (j = 0; devs[j].chipset_name; j++) {
307 if (pdev->device == devs[j].device_id)
308 goto found;
309 }
310
311 printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n",
312 pdev->device);
313 return -ENODEV;
314
315
316 found:
317 bridge = agp_alloc_bridge();
318 if (!bridge)
319 return -ENOMEM;
320
321 bridge->dev = pdev;
322 bridge->capndx = cap_ptr;
323
324 switch (pdev->device) {
325 case PCI_DEVICE_ID_AL_M1541:
326 bridge->driver = &ali_m1541_bridge;
327 break;
328 case PCI_DEVICE_ID_AL_M1621:
329 pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
330 switch (hidden_1621_id) {
331 case 0x31:
332 devs[j].chipset_name = "M1631";
333 break;
334 case 0x32:
335 devs[j].chipset_name = "M1632";
336 break;
337 case 0x41:
338 devs[j].chipset_name = "M1641";
339 break;
340 case 0x43:
341 devs[j].chipset_name = "M????";
342 break;
343 case 0x47:
344 devs[j].chipset_name = "M1647";
345 break;
346 case 0x51:
347 devs[j].chipset_name = "M1651";
348 break;
349 default:
350 break;
351 }
352 /*FALLTHROUGH*/
353 default:
354 bridge->driver = &ali_generic_bridge;
355 }
356
357 printk(KERN_INFO PFX "Detected ALi %s chipset\n",
358 devs[j].chipset_name);
359
360 /* Fill in the mode register */
361 pci_read_config_dword(pdev,
362 bridge->capndx+PCI_AGP_STATUS,
363 &bridge->mode);
364
365 pci_set_drvdata(pdev, bridge);
366 return agp_add_bridge(bridge);
367 }
368
369 static void __devexit agp_ali_remove(struct pci_dev *pdev)
370 {
371 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
372
373 agp_remove_bridge(bridge);
374 agp_put_bridge(bridge);
375 }
376
377 static struct pci_device_id agp_ali_pci_table[] = {
378 {
379 .class = (PCI_CLASS_BRIDGE_HOST << 8),
380 .class_mask = ~0,
381 .vendor = PCI_VENDOR_ID_AL,
382 .device = PCI_ANY_ID,
383 .subvendor = PCI_ANY_ID,
384 .subdevice = PCI_ANY_ID,
385 },
386 { }
387 };
388
389 MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);
390
391 static struct pci_driver agp_ali_pci_driver = {
392 .name = "agpgart-ali",
393 .id_table = agp_ali_pci_table,
394 .probe = agp_ali_probe,
395 .remove = agp_ali_remove,
396 };
397
398 static int __init agp_ali_init(void)
399 {
400 if (agp_off)
401 return -EINVAL;
402 return pci_register_driver(&agp_ali_pci_driver);
403 }
404
405 static void __exit agp_ali_cleanup(void)
406 {
407 pci_unregister_driver(&agp_ali_pci_driver);
408 }
409
410 module_init(agp_ali_init);
411 module_exit(agp_ali_cleanup);
412
413 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
414 MODULE_LICENSE("GPL and additional rights");
415
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