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Commit | Line | Data |
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1da177e4 LT |
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 "agp.h" | |
11 | ||
12 | #define ALI_AGPCTRL 0xb8 | |
13 | #define ALI_ATTBASE 0xbc | |
14 | #define ALI_TLBCTRL 0xc0 | |
15 | #define ALI_TAGCTRL 0xc4 | |
16 | #define ALI_CACHE_FLUSH_CTRL 0xD0 | |
17 | #define ALI_CACHE_FLUSH_ADDR_MASK 0xFFFFF000 | |
18 | #define ALI_CACHE_FLUSH_EN 0x100 | |
19 | ||
20 | static int ali_fetch_size(void) | |
21 | { | |
22 | int i; | |
23 | u32 temp; | |
24 | struct aper_size_info_32 *values; | |
25 | ||
26 | pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); | |
27 | temp &= ~(0xfffffff0); | |
28 | values = A_SIZE_32(agp_bridge->driver->aperture_sizes); | |
29 | ||
30 | for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) { | |
31 | if (temp == values[i].size_value) { | |
32 | agp_bridge->previous_size = | |
33 | agp_bridge->current_size = (void *) (values + i); | |
34 | agp_bridge->aperture_size_idx = i; | |
35 | return values[i].size; | |
36 | } | |
37 | } | |
38 | ||
39 | return 0; | |
40 | } | |
41 | ||
42 | static void ali_tlbflush(struct agp_memory *mem) | |
43 | { | |
44 | u32 temp; | |
45 | ||
46 | pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); | |
47 | temp &= 0xfffffff0; | |
48 | temp |= (1<<0 | 1<<1); | |
49 | pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, temp); | |
50 | } | |
51 | ||
52 | static void ali_cleanup(void) | |
53 | { | |
54 | struct aper_size_info_32 *previous_size; | |
55 | u32 temp; | |
56 | ||
57 | previous_size = A_SIZE_32(agp_bridge->previous_size); | |
58 | ||
59 | pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); | |
60 | // clear tag | |
61 | pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, | |
62 | ((temp & 0xffffff00) | 0x00000001|0x00000002)); | |
63 | ||
64 | pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); | |
65 | pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, | |
66 | ((temp & 0x00000ff0) | previous_size->size_value)); | |
67 | } | |
68 | ||
69 | static int ali_configure(void) | |
70 | { | |
71 | u32 temp; | |
72 | struct aper_size_info_32 *current_size; | |
73 | ||
74 | current_size = A_SIZE_32(agp_bridge->current_size); | |
75 | ||
76 | /* aperture size and gatt addr */ | |
77 | pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp); | |
78 | temp = (((temp & 0x00000ff0) | (agp_bridge->gatt_bus_addr & 0xfffff000)) | |
79 | | (current_size->size_value & 0xf)); | |
80 | pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, temp); | |
81 | ||
82 | /* tlb control */ | |
83 | pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); | |
84 | pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, ((temp & 0xffffff00) | 0x00000010)); | |
85 | ||
86 | /* address to map to */ | |
87 | pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp); | |
88 | agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); | |
89 | ||
90 | #if 0 | |
91 | if (agp_bridge->type == ALI_M1541) { | |
92 | u32 nlvm_addr = 0; | |
93 | ||
94 | switch (current_size->size_value) { | |
95 | case 0: break; | |
96 | case 1: nlvm_addr = 0x100000;break; | |
97 | case 2: nlvm_addr = 0x200000;break; | |
98 | case 3: nlvm_addr = 0x400000;break; | |
99 | case 4: nlvm_addr = 0x800000;break; | |
100 | case 6: nlvm_addr = 0x1000000;break; | |
101 | case 7: nlvm_addr = 0x2000000;break; | |
102 | case 8: nlvm_addr = 0x4000000;break; | |
103 | case 9: nlvm_addr = 0x8000000;break; | |
104 | case 10: nlvm_addr = 0x10000000;break; | |
105 | default: break; | |
106 | } | |
107 | nlvm_addr--; | |
108 | nlvm_addr&=0xfff00000; | |
109 | ||
110 | nlvm_addr+= agp_bridge->gart_bus_addr; | |
111 | nlvm_addr|=(agp_bridge->gart_bus_addr>>12); | |
112 | printk(KERN_INFO PFX "nlvm top &base = %8x\n",nlvm_addr); | |
113 | } | |
114 | #endif | |
115 | ||
116 | pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp); | |
117 | temp &= 0xffffff7f; //enable TLB | |
118 | pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp); | |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
123 | ||
124 | static void m1541_cache_flush(void) | |
125 | { | |
126 | int i, page_count; | |
127 | u32 temp; | |
128 | ||
129 | global_cache_flush(); | |
130 | ||
131 | page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order; | |
132 | for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) { | |
133 | pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, | |
134 | &temp); | |
135 | pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, | |
136 | (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | | |
137 | (agp_bridge->gatt_bus_addr + i)) | | |
138 | ALI_CACHE_FLUSH_EN)); | |
139 | } | |
140 | } | |
141 | ||
142 | static void *m1541_alloc_page(struct agp_bridge_data *bridge) | |
143 | { | |
144 | void *addr = agp_generic_alloc_page(agp_bridge); | |
145 | u32 temp; | |
146 | ||
147 | if (!addr) | |
148 | return NULL; | |
149 | ||
150 | pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); | |
151 | pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, | |
152 | (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | | |
153 | virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN )); | |
154 | return addr; | |
155 | } | |
156 | ||
157 | static void ali_destroy_page(void * addr) | |
158 | { | |
159 | if (addr) { | |
160 | global_cache_flush(); /* is this really needed? --hch */ | |
161 | agp_generic_destroy_page(addr); | |
162 | } | |
163 | } | |
164 | ||
165 | static void m1541_destroy_page(void * addr) | |
166 | { | |
167 | u32 temp; | |
168 | ||
169 | if (addr == NULL) | |
170 | return; | |
171 | ||
172 | global_cache_flush(); | |
173 | ||
174 | pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp); | |
175 | pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, | |
176 | (((temp & ALI_CACHE_FLUSH_ADDR_MASK) | | |
177 | virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN)); | |
178 | agp_generic_destroy_page(addr); | |
179 | } | |
180 | ||
181 | ||
182 | /* Setup function */ | |
183 | ||
184 | static struct aper_size_info_32 ali_generic_sizes[7] = | |
185 | { | |
186 | {256, 65536, 6, 10}, | |
187 | {128, 32768, 5, 9}, | |
188 | {64, 16384, 4, 8}, | |
189 | {32, 8192, 3, 7}, | |
190 | {16, 4096, 2, 6}, | |
191 | {8, 2048, 1, 4}, | |
192 | {4, 1024, 0, 3} | |
193 | }; | |
194 | ||
195 | struct agp_bridge_driver ali_generic_bridge = { | |
196 | .owner = THIS_MODULE, | |
197 | .aperture_sizes = ali_generic_sizes, | |
198 | .size_type = U32_APER_SIZE, | |
199 | .num_aperture_sizes = 7, | |
200 | .configure = ali_configure, | |
201 | .fetch_size = ali_fetch_size, | |
202 | .cleanup = ali_cleanup, | |
203 | .tlb_flush = ali_tlbflush, | |
204 | .mask_memory = agp_generic_mask_memory, | |
205 | .masks = NULL, | |
206 | .agp_enable = agp_generic_enable, | |
207 | .cache_flush = global_cache_flush, | |
208 | .create_gatt_table = agp_generic_create_gatt_table, | |
209 | .free_gatt_table = agp_generic_free_gatt_table, | |
210 | .insert_memory = agp_generic_insert_memory, | |
211 | .remove_memory = agp_generic_remove_memory, | |
212 | .alloc_by_type = agp_generic_alloc_by_type, | |
213 | .free_by_type = agp_generic_free_by_type, | |
214 | .agp_alloc_page = agp_generic_alloc_page, | |
215 | .agp_destroy_page = ali_destroy_page, | |
216 | }; | |
217 | ||
218 | struct agp_bridge_driver ali_m1541_bridge = { | |
219 | .owner = THIS_MODULE, | |
220 | .aperture_sizes = ali_generic_sizes, | |
221 | .size_type = U32_APER_SIZE, | |
222 | .num_aperture_sizes = 7, | |
223 | .configure = ali_configure, | |
224 | .fetch_size = ali_fetch_size, | |
225 | .cleanup = ali_cleanup, | |
226 | .tlb_flush = ali_tlbflush, | |
227 | .mask_memory = agp_generic_mask_memory, | |
228 | .masks = NULL, | |
229 | .agp_enable = agp_generic_enable, | |
230 | .cache_flush = m1541_cache_flush, | |
231 | .create_gatt_table = agp_generic_create_gatt_table, | |
232 | .free_gatt_table = agp_generic_free_gatt_table, | |
233 | .insert_memory = agp_generic_insert_memory, | |
234 | .remove_memory = agp_generic_remove_memory, | |
235 | .alloc_by_type = agp_generic_alloc_by_type, | |
236 | .free_by_type = agp_generic_free_by_type, | |
237 | .agp_alloc_page = m1541_alloc_page, | |
238 | .agp_destroy_page = m1541_destroy_page, | |
239 | }; | |
240 | ||
241 | ||
242 | static struct agp_device_ids ali_agp_device_ids[] __devinitdata = | |
243 | { | |
244 | { | |
245 | .device_id = PCI_DEVICE_ID_AL_M1541, | |
246 | .chipset_name = "M1541", | |
247 | }, | |
248 | { | |
249 | .device_id = PCI_DEVICE_ID_AL_M1621, | |
250 | .chipset_name = "M1621", | |
251 | }, | |
252 | { | |
253 | .device_id = PCI_DEVICE_ID_AL_M1631, | |
254 | .chipset_name = "M1631", | |
255 | }, | |
256 | { | |
257 | .device_id = PCI_DEVICE_ID_AL_M1632, | |
258 | .chipset_name = "M1632", | |
259 | }, | |
260 | { | |
261 | .device_id = PCI_DEVICE_ID_AL_M1641, | |
262 | .chipset_name = "M1641", | |
263 | }, | |
264 | { | |
265 | .device_id = PCI_DEVICE_ID_AL_M1644, | |
266 | .chipset_name = "M1644", | |
267 | }, | |
268 | { | |
269 | .device_id = PCI_DEVICE_ID_AL_M1647, | |
270 | .chipset_name = "M1647", | |
271 | }, | |
272 | { | |
273 | .device_id = PCI_DEVICE_ID_AL_M1651, | |
274 | .chipset_name = "M1651", | |
275 | }, | |
276 | { | |
277 | .device_id = PCI_DEVICE_ID_AL_M1671, | |
278 | .chipset_name = "M1671", | |
279 | }, | |
280 | { | |
281 | .device_id = PCI_DEVICE_ID_AL_M1681, | |
282 | .chipset_name = "M1681", | |
283 | }, | |
284 | { | |
285 | .device_id = PCI_DEVICE_ID_AL_M1683, | |
286 | .chipset_name = "M1683", | |
287 | }, | |
288 | ||
289 | { }, /* dummy final entry, always present */ | |
290 | }; | |
291 | ||
292 | static int __devinit agp_ali_probe(struct pci_dev *pdev, | |
293 | const struct pci_device_id *ent) | |
294 | { | |
295 | struct agp_device_ids *devs = ali_agp_device_ids; | |
296 | struct agp_bridge_data *bridge; | |
297 | u8 hidden_1621_id, cap_ptr; | |
298 | int j; | |
299 | ||
300 | cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP); | |
301 | if (!cap_ptr) | |
302 | return -ENODEV; | |
303 | ||
304 | /* probe for known chipsets */ | |
305 | for (j = 0; devs[j].chipset_name; j++) { | |
306 | if (pdev->device == devs[j].device_id) | |
307 | goto found; | |
308 | } | |
309 | ||
310 | printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n", | |
311 | pdev->device); | |
312 | return -ENODEV; | |
313 | ||
314 | ||
315 | found: | |
316 | bridge = agp_alloc_bridge(); | |
317 | if (!bridge) | |
318 | return -ENOMEM; | |
319 | ||
320 | bridge->dev = pdev; | |
321 | bridge->capndx = cap_ptr; | |
322 | ||
323 | switch (pdev->device) { | |
324 | case PCI_DEVICE_ID_AL_M1541: | |
325 | bridge->driver = &ali_m1541_bridge; | |
326 | break; | |
327 | case PCI_DEVICE_ID_AL_M1621: | |
328 | pci_read_config_byte(pdev, 0xFB, &hidden_1621_id); | |
329 | switch (hidden_1621_id) { | |
330 | case 0x31: | |
331 | devs[j].chipset_name = "M1631"; | |
332 | break; | |
333 | case 0x32: | |
334 | devs[j].chipset_name = "M1632"; | |
335 | break; | |
336 | case 0x41: | |
337 | devs[j].chipset_name = "M1641"; | |
338 | break; | |
339 | case 0x43: | |
340 | devs[j].chipset_name = "M????"; | |
341 | break; | |
342 | case 0x47: | |
343 | devs[j].chipset_name = "M1647"; | |
344 | break; | |
345 | case 0x51: | |
346 | devs[j].chipset_name = "M1651"; | |
347 | break; | |
348 | default: | |
349 | break; | |
350 | } | |
351 | /*FALLTHROUGH*/ | |
352 | default: | |
353 | bridge->driver = &ali_generic_bridge; | |
354 | } | |
355 | ||
356 | printk(KERN_INFO PFX "Detected ALi %s chipset\n", | |
357 | devs[j].chipset_name); | |
358 | ||
359 | /* Fill in the mode register */ | |
360 | pci_read_config_dword(pdev, | |
361 | bridge->capndx+PCI_AGP_STATUS, | |
362 | &bridge->mode); | |
363 | ||
364 | pci_set_drvdata(pdev, bridge); | |
365 | return agp_add_bridge(bridge); | |
366 | } | |
367 | ||
368 | static void __devexit agp_ali_remove(struct pci_dev *pdev) | |
369 | { | |
370 | struct agp_bridge_data *bridge = pci_get_drvdata(pdev); | |
371 | ||
372 | agp_remove_bridge(bridge); | |
373 | agp_put_bridge(bridge); | |
374 | } | |
375 | ||
376 | static struct pci_device_id agp_ali_pci_table[] = { | |
377 | { | |
378 | .class = (PCI_CLASS_BRIDGE_HOST << 8), | |
379 | .class_mask = ~0, | |
380 | .vendor = PCI_VENDOR_ID_AL, | |
381 | .device = PCI_ANY_ID, | |
382 | .subvendor = PCI_ANY_ID, | |
383 | .subdevice = PCI_ANY_ID, | |
384 | }, | |
385 | { } | |
386 | }; | |
387 | ||
388 | MODULE_DEVICE_TABLE(pci, agp_ali_pci_table); | |
389 | ||
390 | static struct pci_driver agp_ali_pci_driver = { | |
391 | .name = "agpgart-ali", | |
392 | .id_table = agp_ali_pci_table, | |
393 | .probe = agp_ali_probe, | |
394 | .remove = agp_ali_remove, | |
395 | }; | |
396 | ||
397 | static int __init agp_ali_init(void) | |
398 | { | |
399 | if (agp_off) | |
400 | return -EINVAL; | |
401 | return pci_register_driver(&agp_ali_pci_driver); | |
402 | } | |
403 | ||
404 | static void __exit agp_ali_cleanup(void) | |
405 | { | |
406 | pci_unregister_driver(&agp_ali_pci_driver); | |
407 | } | |
408 | ||
409 | module_init(agp_ali_init); | |
410 | module_exit(agp_ali_cleanup); | |
411 | ||
412 | MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>"); | |
413 | MODULE_LICENSE("GPL and additional rights"); | |
414 |