]> nv-tegra.nvidia Code Review - linux-3.10.git/blob - drivers/char/agp/ali-agp.c
Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart
[linux-3.10.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         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         .owner          = THIS_MODULE,
393         .name           = "agpgart-ali",
394         .id_table       = agp_ali_pci_table,
395         .probe          = agp_ali_probe,
396         .remove         = agp_ali_remove,
397 };
398
399 static int __init agp_ali_init(void)
400 {
401         if (agp_off)
402                 return -EINVAL;
403         return pci_register_driver(&agp_ali_pci_driver);
404 }
405
406 static void __exit agp_ali_cleanup(void)
407 {
408         pci_unregister_driver(&agp_ali_pci_driver);
409 }
410
411 module_init(agp_ali_init);
412 module_exit(agp_ali_cleanup);
413
414 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
415 MODULE_LICENSE("GPL and additional rights");
416