Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/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         agp_bridge->gart_bus_addr = pci_bus_address(agp_bridge->dev,
 89                                                     AGP_APERTURE_BAR);
 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                 dev_info(&agp_bridge->dev->dev, "nlvm top &base = %8x\n",
114                          nlvm_addr);
115         }
116 #endif
117 
118         pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
119         temp &= 0xffffff7f;             //enable TLB
120         pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp);
121 
122         return 0;
123 }
124 
125 
126 static void m1541_cache_flush(void)
127 {
128         int i, page_count;
129         u32 temp;
130 
131         global_cache_flush();
132 
133         page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order;
134         for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) {
135                 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
136                                 &temp);
137                 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
138                                 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
139                                   (agp_bridge->gatt_bus_addr + i)) |
140                                  ALI_CACHE_FLUSH_EN));
141         }
142 }
143 
144 static struct page *m1541_alloc_page(struct agp_bridge_data *bridge)
145 {
146         struct page *page = agp_generic_alloc_page(agp_bridge);
147         u32 temp;
148 
149         if (!page)
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                           page_to_phys(page)) | ALI_CACHE_FLUSH_EN ));
156         return page;
157 }
158 
159 static void ali_destroy_page(struct page *page, int flags)
160 {
161         if (page) {
162                 if (flags & AGP_PAGE_DESTROY_UNMAP) {
163                         global_cache_flush();   /* is this really needed?  --hch */
164                         agp_generic_destroy_page(page, flags);
165                 } else
166                         agp_generic_destroy_page(page, flags);
167         }
168 }
169 
170 static void m1541_destroy_page(struct page *page, int flags)
171 {
172         u32 temp;
173 
174         if (page == NULL)
175                 return;
176 
177         if (flags & AGP_PAGE_DESTROY_UNMAP) {
178                 global_cache_flush();
179 
180                 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
181                 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
182                                        (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
183                                          page_to_phys(page)) | ALI_CACHE_FLUSH_EN));
184         }
185         agp_generic_destroy_page(page, flags);
186 }
187 
188 
189 /* Setup function */
190 
191 static const struct aper_size_info_32 ali_generic_sizes[7] =
192 {
193         {256, 65536, 6, 10},
194         {128, 32768, 5, 9},
195         {64, 16384, 4, 8},
196         {32, 8192, 3, 7},
197         {16, 4096, 2, 6},
198         {8, 2048, 1, 4},
199         {4, 1024, 0, 3}
200 };
201 
202 static const struct agp_bridge_driver ali_generic_bridge = {
203         .owner                  = THIS_MODULE,
204         .aperture_sizes         = ali_generic_sizes,
205         .size_type              = U32_APER_SIZE,
206         .num_aperture_sizes     = 7,
207         .needs_scratch_page     = true,
208         .configure              = ali_configure,
209         .fetch_size             = ali_fetch_size,
210         .cleanup                = ali_cleanup,
211         .tlb_flush              = ali_tlbflush,
212         .mask_memory            = agp_generic_mask_memory,
213         .masks                  = NULL,
214         .agp_enable             = agp_generic_enable,
215         .cache_flush            = global_cache_flush,
216         .create_gatt_table      = agp_generic_create_gatt_table,
217         .free_gatt_table        = agp_generic_free_gatt_table,
218         .insert_memory          = agp_generic_insert_memory,
219         .remove_memory          = agp_generic_remove_memory,
220         .alloc_by_type          = agp_generic_alloc_by_type,
221         .free_by_type           = agp_generic_free_by_type,
222         .agp_alloc_page         = agp_generic_alloc_page,
223         .agp_destroy_page       = ali_destroy_page,
224         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
225 };
226 
227 static const struct agp_bridge_driver ali_m1541_bridge = {
228         .owner                  = THIS_MODULE,
229         .aperture_sizes         = ali_generic_sizes,
230         .size_type              = U32_APER_SIZE,
231         .num_aperture_sizes     = 7,
232         .configure              = ali_configure,
233         .fetch_size             = ali_fetch_size,
234         .cleanup                = ali_cleanup,
235         .tlb_flush              = ali_tlbflush,
236         .mask_memory            = agp_generic_mask_memory,
237         .masks                  = NULL,
238         .agp_enable             = agp_generic_enable,
239         .cache_flush            = m1541_cache_flush,
240         .create_gatt_table      = agp_generic_create_gatt_table,
241         .free_gatt_table        = agp_generic_free_gatt_table,
242         .insert_memory          = agp_generic_insert_memory,
243         .remove_memory          = agp_generic_remove_memory,
244         .alloc_by_type          = agp_generic_alloc_by_type,
245         .free_by_type           = agp_generic_free_by_type,
246         .agp_alloc_page         = m1541_alloc_page,
247         .agp_destroy_page       = m1541_destroy_page,
248         .agp_type_to_mask_type  = agp_generic_type_to_mask_type,
249 };
250 
251 
252 static struct agp_device_ids ali_agp_device_ids[] =
253 {
254         {
255                 .device_id      = PCI_DEVICE_ID_AL_M1541,
256                 .chipset_name   = "M1541",
257         },
258         {
259                 .device_id      = PCI_DEVICE_ID_AL_M1621,
260                 .chipset_name   = "M1621",
261         },
262         {
263                 .device_id      = PCI_DEVICE_ID_AL_M1631,
264                 .chipset_name   = "M1631",
265         },
266         {
267                 .device_id      = PCI_DEVICE_ID_AL_M1632,
268                 .chipset_name   = "M1632",
269         },
270         {
271                 .device_id      = PCI_DEVICE_ID_AL_M1641,
272                 .chipset_name   = "M1641",
273         },
274         {
275                 .device_id      = PCI_DEVICE_ID_AL_M1644,
276                 .chipset_name   = "M1644",
277         },
278         {
279                 .device_id      = PCI_DEVICE_ID_AL_M1647,
280                 .chipset_name   = "M1647",
281         },
282         {
283                 .device_id      = PCI_DEVICE_ID_AL_M1651,
284                 .chipset_name   = "M1651",
285         },
286         {
287                 .device_id      = PCI_DEVICE_ID_AL_M1671,
288                 .chipset_name   = "M1671",
289         },
290         {
291                 .device_id      = PCI_DEVICE_ID_AL_M1681,
292                 .chipset_name   = "M1681",
293         },
294         {
295                 .device_id      = PCI_DEVICE_ID_AL_M1683,
296                 .chipset_name   = "M1683",
297         },
298 
299         { }, /* dummy final entry, always present */
300 };
301 
302 static int agp_ali_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
303 {
304         struct agp_device_ids *devs = ali_agp_device_ids;
305         struct agp_bridge_data *bridge;
306         u8 hidden_1621_id, cap_ptr;
307         int j;
308 
309         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
310         if (!cap_ptr)
311                 return -ENODEV;
312 
313         /* probe for known chipsets */
314         for (j = 0; devs[j].chipset_name; j++) {
315                 if (pdev->device == devs[j].device_id)
316                         goto found;
317         }
318 
319         dev_err(&pdev->dev, "unsupported ALi chipset [%04x/%04x])\n",
320                 pdev->vendor, pdev->device);
321         return -ENODEV;
322 
323 
324 found:
325         bridge = agp_alloc_bridge();
326         if (!bridge)
327                 return -ENOMEM;
328 
329         bridge->dev = pdev;
330         bridge->capndx = cap_ptr;
331 
332         switch (pdev->device) {
333         case PCI_DEVICE_ID_AL_M1541:
334                 bridge->driver = &ali_m1541_bridge;
335                 break;
336         case PCI_DEVICE_ID_AL_M1621:
337                 pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
338                 switch (hidden_1621_id) {
339                 case 0x31:
340                         devs[j].chipset_name = "M1631";
341                         break;
342                 case 0x32:
343                         devs[j].chipset_name = "M1632";
344                         break;
345                 case 0x41:
346                         devs[j].chipset_name = "M1641";
347                         break;
348                 case 0x43:
349                         devs[j].chipset_name = "M1621";
350                         break;
351                 case 0x47:
352                         devs[j].chipset_name = "M1647";
353                         break;
354                 case 0x51:
355                         devs[j].chipset_name = "M1651";
356                         break;
357                 default:
358                         break;
359                 }
360                 /*FALLTHROUGH*/
361         default:
362                 bridge->driver = &ali_generic_bridge;
363         }
364 
365         dev_info(&pdev->dev, "ALi %s chipset\n", 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 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@redhat.com>");
421 MODULE_LICENSE("GPL and additional rights");
422 
423 

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