Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / 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         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, int flags)
159 {
160         if (addr) {
161                 if (flags & AGP_PAGE_DESTROY_UNMAP) {
162                         global_cache_flush();   /* is this really needed?  --hch */
163                         agp_generic_destroy_page(addr, flags);
164                 } else
165                         agp_generic_destroy_page(addr, flags);
166         }
167 }
168
169 static void m1541_destroy_page(void * addr, int flags)
170 {
171         u32 temp;
172
173         if (addr == NULL)
174                 return;
175
176         if (flags & AGP_PAGE_DESTROY_UNMAP) {
177                 global_cache_flush();
178
179                 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
180                 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
181                                        (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
182                                          virt_to_gart(addr)) | ALI_CACHE_FLUSH_EN));
183         }
184         agp_generic_destroy_page(addr, flags);
185 }
186
187
188 /* Setup function */
189
190 static const struct aper_size_info_32 ali_generic_sizes[7] =
191 {
192         {256, 65536, 6, 10},
193         {128, 32768, 5, 9},
194         {64, 16384, 4, 8},
195         {32, 8192, 3, 7},
196         {16, 4096, 2, 6},
197         {8, 2048, 1, 4},
198         {4, 1024, 0, 3}
199 };
200
201 static const struct agp_bridge_driver ali_generic_bridge = {
202         .owner                  = THIS_MODULE,
203         .aperture_sizes         = ali_generic_sizes,
204         .size_type              = U32_APER_SIZE,
205         .num_aperture_sizes     = 7,
206         .configure              = ali_configure,
207         .fetch_size             = ali_fetch_size,
208         .cleanup                = ali_cleanup,
209         .tlb_flush              = ali_tlbflush,
210         .mask_memory            = agp_generic_mask_memory,
211         .masks                  = NULL,
212         .agp_enable             = agp_generic_enable,
213         .cache_flush            = global_cache_flush,
214         .create_gatt_table      = agp_generic_create_gatt_table,
215         .free_gatt_table        = agp_generic_free_gatt_table,
216         .insert_memory          = agp_generic_insert_memory,
217         .remove_memory          = agp_generic_remove_memory,
218         .alloc_by_type          = agp_generic_alloc_by_type,
219         .free_by_type           = agp_generic_free_by_type,
220         .agp_alloc_page         = agp_generic_alloc_page,
221         .agp_destroy_page       = ali_destroy_page,
222         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
223 };
224
225 static const struct agp_bridge_driver ali_m1541_bridge = {
226         .owner                  = THIS_MODULE,
227         .aperture_sizes         = ali_generic_sizes,
228         .size_type              = U32_APER_SIZE,
229         .num_aperture_sizes     = 7,
230         .configure              = ali_configure,
231         .fetch_size             = ali_fetch_size,
232         .cleanup                = ali_cleanup,
233         .tlb_flush              = ali_tlbflush,
234         .mask_memory            = agp_generic_mask_memory,
235         .masks                  = NULL,
236         .agp_enable             = agp_generic_enable,
237         .cache_flush            = m1541_cache_flush,
238         .create_gatt_table      = agp_generic_create_gatt_table,
239         .free_gatt_table        = agp_generic_free_gatt_table,
240         .insert_memory          = agp_generic_insert_memory,
241         .remove_memory          = agp_generic_remove_memory,
242         .alloc_by_type          = agp_generic_alloc_by_type,
243         .free_by_type           = agp_generic_free_by_type,
244         .agp_alloc_page         = m1541_alloc_page,
245         .agp_destroy_page       = m1541_destroy_page,
246         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
247 };
248
249
250 static struct agp_device_ids ali_agp_device_ids[] __devinitdata =
251 {
252         {
253                 .device_id      = PCI_DEVICE_ID_AL_M1541,
254                 .chipset_name   = "M1541",
255         },
256         {
257                 .device_id      = PCI_DEVICE_ID_AL_M1621,
258                 .chipset_name   = "M1621",
259         },
260         {
261                 .device_id      = PCI_DEVICE_ID_AL_M1631,
262                 .chipset_name   = "M1631",
263         },
264         {
265                 .device_id      = PCI_DEVICE_ID_AL_M1632,
266                 .chipset_name   = "M1632",
267         },
268         {
269                 .device_id      = PCI_DEVICE_ID_AL_M1641,
270                 .chipset_name   = "M1641",
271         },
272         {
273                 .device_id      = PCI_DEVICE_ID_AL_M1644,
274                 .chipset_name   = "M1644",
275         },
276         {
277                 .device_id      = PCI_DEVICE_ID_AL_M1647,
278                 .chipset_name   = "M1647",
279         },
280         {
281                 .device_id      = PCI_DEVICE_ID_AL_M1651,
282                 .chipset_name   = "M1651",
283         },
284         {
285                 .device_id      = PCI_DEVICE_ID_AL_M1671,
286                 .chipset_name   = "M1671",
287         },
288         {
289                 .device_id      = PCI_DEVICE_ID_AL_M1681,
290                 .chipset_name   = "M1681",
291         },
292         {
293                 .device_id      = PCI_DEVICE_ID_AL_M1683,
294                 .chipset_name   = "M1683",
295         },
296
297         { }, /* dummy final entry, always present */
298 };
299
300 static int __devinit agp_ali_probe(struct pci_dev *pdev,
301                                 const struct pci_device_id *ent)
302 {
303         struct agp_device_ids *devs = ali_agp_device_ids;
304         struct agp_bridge_data *bridge;
305         u8 hidden_1621_id, cap_ptr;
306         int j;
307
308         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
309         if (!cap_ptr)
310                 return -ENODEV;
311
312         /* probe for known chipsets */
313         for (j = 0; devs[j].chipset_name; j++) {
314                 if (pdev->device == devs[j].device_id)
315                         goto found;
316         }
317
318         printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n",
319              pdev->device);
320         return -ENODEV;
321
322
323 found:
324         bridge = agp_alloc_bridge();
325         if (!bridge)
326                 return -ENOMEM;
327
328         bridge->dev = pdev;
329         bridge->capndx = cap_ptr;
330
331         switch (pdev->device) {
332         case PCI_DEVICE_ID_AL_M1541:
333                 bridge->driver = &ali_m1541_bridge;
334                 break;
335         case PCI_DEVICE_ID_AL_M1621:
336                 pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
337                 switch (hidden_1621_id) {
338                 case 0x31:
339                         devs[j].chipset_name = "M1631";
340                         break;
341                 case 0x32:
342                         devs[j].chipset_name = "M1632";
343                         break;
344                 case 0x41:
345                         devs[j].chipset_name = "M1641";
346                         break;
347                 case 0x43:
348                         devs[j].chipset_name = "M????";
349                         break;
350                 case 0x47:
351                         devs[j].chipset_name = "M1647";
352                         break;
353                 case 0x51:
354                         devs[j].chipset_name = "M1651";
355                         break;
356                 default:
357                         break;
358                 }
359                 /*FALLTHROUGH*/
360         default:
361                 bridge->driver = &ali_generic_bridge;
362         }
363
364         printk(KERN_INFO PFX "Detected ALi %s chipset\n",
365                         devs[j].chipset_name);
366
367         /* Fill in the mode register */
368         pci_read_config_dword(pdev,
369                         bridge->capndx+PCI_AGP_STATUS,
370                         &bridge->mode);
371
372         pci_set_drvdata(pdev, bridge);
373         return agp_add_bridge(bridge);
374 }
375
376 static void __devexit agp_ali_remove(struct pci_dev *pdev)
377 {
378         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
379
380         agp_remove_bridge(bridge);
381         agp_put_bridge(bridge);
382 }
383
384 static struct pci_device_id agp_ali_pci_table[] = {
385         {
386         .class          = (PCI_CLASS_BRIDGE_HOST << 8),
387         .class_mask     = ~0,
388         .vendor         = PCI_VENDOR_ID_AL,
389         .device         = PCI_ANY_ID,
390         .subvendor      = PCI_ANY_ID,
391         .subdevice      = PCI_ANY_ID,
392         },
393         { }
394 };
395
396 MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);
397
398 static struct pci_driver agp_ali_pci_driver = {
399         .name           = "agpgart-ali",
400         .id_table       = agp_ali_pci_table,
401         .probe          = agp_ali_probe,
402         .remove         = agp_ali_remove,
403 };
404
405 static int __init agp_ali_init(void)
406 {
407         if (agp_off)
408                 return -EINVAL;
409         return pci_register_driver(&agp_ali_pci_driver);
410 }
411
412 static void __exit agp_ali_cleanup(void)
413 {
414         pci_unregister_driver(&agp_ali_pci_driver);
415 }
416
417 module_init(agp_ali_init);
418 module_exit(agp_ali_cleanup);
419
420 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
421 MODULE_LICENSE("GPL and additional rights");
422