[PATCH] PCI: removed unneeded .owner field from struct pci_driver
[linux-2.6.git] / drivers / char / agp / ati-agp.c
1 /*
2  * ATi 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/string.h>
10 #include <linux/slab.h>
11 #include <linux/agp_backend.h>
12 #include <asm/agp.h>
13 #include "agp.h"
14
15 #define ATI_GART_MMBASE_ADDR    0x14
16 #define ATI_RS100_APSIZE        0xac
17 #define ATI_RS100_IG_AGPMODE    0xb0
18 #define ATI_RS300_APSIZE        0xf8
19 #define ATI_RS300_IG_AGPMODE    0xfc
20 #define ATI_GART_FEATURE_ID             0x00
21 #define ATI_GART_BASE                   0x04
22 #define ATI_GART_CACHE_SZBASE           0x08
23 #define ATI_GART_CACHE_CNTRL            0x0c
24 #define ATI_GART_CACHE_ENTRY_CNTRL      0x10
25
26
27 static struct aper_size_info_lvl2 ati_generic_sizes[7] =
28 {
29         {2048, 524288, 0x0000000c},
30         {1024, 262144, 0x0000000a},
31         {512, 131072, 0x00000008},
32         {256, 65536, 0x00000006},
33         {128, 32768, 0x00000004},
34         {64, 16384, 0x00000002},
35         {32, 8192, 0x00000000}
36 };
37
38 static struct gatt_mask ati_generic_masks[] =
39 {
40         { .mask = 1, .type = 0}
41 };
42
43
44
45 typedef struct _ati_page_map {
46         unsigned long *real;
47         unsigned long __iomem *remapped;
48 } ati_page_map;
49
50 static struct _ati_generic_private {
51         volatile u8 __iomem *registers;
52         ati_page_map **gatt_pages;
53         int num_tables;
54 } ati_generic_private;
55
56 static int ati_create_page_map(ati_page_map *page_map)
57 {
58         int i, err = 0;
59
60         page_map->real = (unsigned long *) __get_free_page(GFP_KERNEL);
61         if (page_map->real == NULL)
62                 return -ENOMEM;
63
64         SetPageReserved(virt_to_page(page_map->real));
65         err = map_page_into_agp(virt_to_page(page_map->real));
66         page_map->remapped = ioremap_nocache(virt_to_gart(page_map->real),
67                                             PAGE_SIZE);
68         if (page_map->remapped == NULL || err) {
69                 ClearPageReserved(virt_to_page(page_map->real));
70                 free_page((unsigned long) page_map->real);
71                 page_map->real = NULL;
72                 return -ENOMEM;
73         }
74         /*CACHE_FLUSH();*/
75         global_cache_flush();
76
77         for(i = 0; i < PAGE_SIZE / sizeof(unsigned long); i++) {
78                 writel(agp_bridge->scratch_page, page_map->remapped+i);
79                 readl(page_map->remapped+i);    /* PCI Posting. */
80         }
81
82         return 0;
83 }
84
85
86 static void ati_free_page_map(ati_page_map *page_map)
87 {
88         unmap_page_from_agp(virt_to_page(page_map->real));
89         iounmap(page_map->remapped);
90         ClearPageReserved(virt_to_page(page_map->real));
91         free_page((unsigned long) page_map->real);
92 }
93
94
95 static void ati_free_gatt_pages(void)
96 {
97         int i;
98         ati_page_map **tables;
99         ati_page_map *entry;
100
101         tables = ati_generic_private.gatt_pages;
102         for(i = 0; i < ati_generic_private.num_tables; i++) {
103                 entry = tables[i];
104                 if (entry != NULL) {
105                         if (entry->real != NULL)
106                                 ati_free_page_map(entry);
107                         kfree(entry);
108                 }
109         }
110         kfree(tables);
111 }
112
113
114 static int ati_create_gatt_pages(int nr_tables)
115 {
116         ati_page_map **tables;
117         ati_page_map *entry;
118         int retval = 0;
119         int i;
120
121         tables = kzalloc((nr_tables + 1) * sizeof(ati_page_map *),GFP_KERNEL);
122         if (tables == NULL)
123                 return -ENOMEM;
124
125         for (i = 0; i < nr_tables; i++) {
126                 entry = kzalloc(sizeof(ati_page_map), GFP_KERNEL);
127                 if (entry == NULL) {
128                         while (i>0) {
129                                 kfree (tables[i-1]);
130                                 i--;
131                         }
132                         kfree (tables);
133                         tables = NULL;
134                         retval = -ENOMEM;
135                         break;
136                 }
137                 tables[i] = entry;
138                 retval = ati_create_page_map(entry);
139                 if (retval != 0) break;
140         }
141         ati_generic_private.num_tables = nr_tables;
142         ati_generic_private.gatt_pages = tables;
143
144         if (retval != 0) ati_free_gatt_pages();
145
146         return retval;
147 }
148
149 static int is_r200(void)
150 {
151         if ((agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS100) ||
152             (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200) ||
153             (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS200_B) ||
154             (agp_bridge->dev->device == PCI_DEVICE_ID_ATI_RS250))
155                 return 1;
156         return 0;
157 }
158
159 static int ati_fetch_size(void)
160 {
161         int i;
162         u32 temp;
163         struct aper_size_info_lvl2 *values;
164
165         if (is_r200())
166                 pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
167         else
168                 pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
169
170         temp = (temp & 0x0000000e);
171         values = A_SIZE_LVL2(agp_bridge->driver->aperture_sizes);
172         for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
173                 if (temp == values[i].size_value) {
174                         agp_bridge->previous_size =
175                             agp_bridge->current_size = (void *) (values + i);
176
177                         agp_bridge->aperture_size_idx = i;
178                         return values[i].size;
179                 }
180         }
181
182         return 0;
183 }
184
185 static void ati_tlbflush(struct agp_memory * mem)
186 {
187         writel(1, ati_generic_private.registers+ATI_GART_CACHE_CNTRL);
188         readl(ati_generic_private.registers+ATI_GART_CACHE_CNTRL);      /* PCI Posting. */
189 }
190
191 static void ati_cleanup(void)
192 {
193         struct aper_size_info_lvl2 *previous_size;
194         u32 temp;
195
196         previous_size = A_SIZE_LVL2(agp_bridge->previous_size);
197
198         /* Write back the previous size and disable gart translation */
199         if (is_r200()) {
200                 pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
201                 temp = ((temp & ~(0x0000000f)) | previous_size->size_value);
202                 pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
203         } else {
204                 pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
205                 temp = ((temp & ~(0x0000000f)) | previous_size->size_value);
206                 pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
207         }
208         iounmap((volatile u8 __iomem *)ati_generic_private.registers);
209 }
210
211
212 static int ati_configure(void)
213 {
214         u32 temp;
215
216         /* Get the memory mapped registers */
217         pci_read_config_dword(agp_bridge->dev, ATI_GART_MMBASE_ADDR, &temp);
218         temp = (temp & 0xfffff000);
219         ati_generic_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096);
220
221         if (is_r200())
222         pci_write_config_dword(agp_bridge->dev, ATI_RS100_IG_AGPMODE, 0x20000);
223         else
224                 pci_write_config_dword(agp_bridge->dev, ATI_RS300_IG_AGPMODE, 0x20000);
225
226         /* address to map too */
227         /*
228         pci_read_config_dword(agp_bridge.dev, AGP_APBASE, &temp);
229         agp_bridge.gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
230         printk(KERN_INFO PFX "IGP320 gart_bus_addr: %x\n", agp_bridge.gart_bus_addr);
231         */
232         writel(0x60000, ati_generic_private.registers+ATI_GART_FEATURE_ID);
233         readl(ati_generic_private.registers+ATI_GART_FEATURE_ID);       /* PCI Posting.*/
234
235         /* SIGNALED_SYSTEM_ERROR @ NB_STATUS */
236         pci_read_config_dword(agp_bridge->dev, 4, &temp);
237         pci_write_config_dword(agp_bridge->dev, 4, temp | (1<<14));
238
239         /* Write out the address of the gatt table */
240         writel(agp_bridge->gatt_bus_addr, ati_generic_private.registers+ATI_GART_BASE);
241         readl(ati_generic_private.registers+ATI_GART_BASE);     /* PCI Posting. */
242
243         return 0;
244 }
245
246
247 /*
248  *Since we don't need contigious memory we just try
249  * to get the gatt table once
250  */
251
252 #define GET_PAGE_DIR_OFF(addr) (addr >> 22)
253 #define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr) - \
254         GET_PAGE_DIR_OFF(agp_bridge->gart_bus_addr))
255 #define GET_GATT_OFF(addr) ((addr & 0x003ff000) >> 12)
256 #undef  GET_GATT
257 #define GET_GATT(addr) (ati_generic_private.gatt_pages[\
258         GET_PAGE_DIR_IDX(addr)]->remapped)
259
260 static int ati_insert_memory(struct agp_memory * mem,
261                              off_t pg_start, int type)
262 {
263         int i, j, num_entries;
264         unsigned long __iomem *cur_gatt;
265         unsigned long addr;
266
267         num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;
268
269         if (type != 0 || mem->type != 0)
270                 return -EINVAL;
271
272         if ((pg_start + mem->page_count) > num_entries)
273                 return -EINVAL;
274
275         j = pg_start;
276         while (j < (pg_start + mem->page_count)) {
277                 addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
278                 cur_gatt = GET_GATT(addr);
279                 if (!PGE_EMPTY(agp_bridge,readl(cur_gatt+GET_GATT_OFF(addr))))
280                         return -EBUSY;
281                 j++;
282         }
283
284         if (mem->is_flushed == FALSE) {
285                 /*CACHE_FLUSH(); */
286                 global_cache_flush();
287                 mem->is_flushed = TRUE;
288         }
289
290         for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
291                 addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;
292                 cur_gatt = GET_GATT(addr);
293                 writel(agp_bridge->driver->mask_memory(agp_bridge,
294                         mem->memory[i], mem->type), cur_gatt+GET_GATT_OFF(addr));
295                 readl(cur_gatt+GET_GATT_OFF(addr));     /* PCI Posting. */
296         }
297         agp_bridge->driver->tlb_flush(mem);
298         return 0;
299 }
300
301 static int ati_remove_memory(struct agp_memory * mem, off_t pg_start,
302                              int type)
303 {
304         int i;
305         unsigned long __iomem *cur_gatt;
306         unsigned long addr;
307
308         if (type != 0 || mem->type != 0) {
309                 return -EINVAL;
310         }
311         for (i = pg_start; i < (mem->page_count + pg_start); i++) {
312                 addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;
313                 cur_gatt = GET_GATT(addr);
314                 writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));
315                 readl(cur_gatt+GET_GATT_OFF(addr)); /* PCI Posting. */
316         }
317
318         agp_bridge->driver->tlb_flush(mem);
319         return 0;
320 }
321
322 static int ati_create_gatt_table(struct agp_bridge_data *bridge)
323 {
324         struct aper_size_info_lvl2 *value;
325         ati_page_map page_dir;
326         unsigned long addr;
327         int retval;
328         u32 temp;
329         int i;
330         struct aper_size_info_lvl2 *current_size;
331
332         value = A_SIZE_LVL2(agp_bridge->current_size);
333         retval = ati_create_page_map(&page_dir);
334         if (retval != 0)
335                 return retval;
336
337         retval = ati_create_gatt_pages(value->num_entries / 1024);
338         if (retval != 0) {
339                 ati_free_page_map(&page_dir);
340                 return retval;
341         }
342
343         agp_bridge->gatt_table_real = (u32 *)page_dir.real;
344         agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;
345         agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real);
346
347         /* Write out the size register */
348         current_size = A_SIZE_LVL2(agp_bridge->current_size);
349
350         if (is_r200()) {
351                 pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
352                 temp = (((temp & ~(0x0000000e)) | current_size->size_value)
353                         | 0x00000001);
354                 pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);
355                 pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);
356         } else {
357                 pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
358                 temp = (((temp & ~(0x0000000e)) | current_size->size_value)
359                         | 0x00000001);
360                 pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);
361                 pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);
362         }
363
364         /*
365          * Get the address for the gart region.
366          * This is a bus address even on the alpha, b/c its
367          * used to program the agp master not the cpu
368          */
369         pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
370         addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
371         agp_bridge->gart_bus_addr = addr;
372
373         /* Calculate the agp offset */
374         for(i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {
375                 writel(virt_to_gart(ati_generic_private.gatt_pages[i]->real) | 1,
376                         page_dir.remapped+GET_PAGE_DIR_OFF(addr));
377                 readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));        /* PCI Posting. */
378         }
379
380         return 0;
381 }
382
383 static int ati_free_gatt_table(struct agp_bridge_data *bridge)
384 {
385         ati_page_map page_dir;
386
387         page_dir.real = (unsigned long *)agp_bridge->gatt_table_real;
388         page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table;
389
390         ati_free_gatt_pages();
391         ati_free_page_map(&page_dir);
392         return 0;
393 }
394
395 static struct agp_bridge_driver ati_generic_bridge = {
396         .owner                  = THIS_MODULE,
397         .aperture_sizes         = ati_generic_sizes,
398         .size_type              = LVL2_APER_SIZE,
399         .num_aperture_sizes     = 7,
400         .configure              = ati_configure,
401         .fetch_size             = ati_fetch_size,
402         .cleanup                = ati_cleanup,
403         .tlb_flush              = ati_tlbflush,
404         .mask_memory            = agp_generic_mask_memory,
405         .masks                  = ati_generic_masks,
406         .agp_enable             = agp_generic_enable,
407         .cache_flush            = global_cache_flush,
408         .create_gatt_table      = ati_create_gatt_table,
409         .free_gatt_table        = ati_free_gatt_table,
410         .insert_memory          = ati_insert_memory,
411         .remove_memory          = ati_remove_memory,
412         .alloc_by_type          = agp_generic_alloc_by_type,
413         .free_by_type           = agp_generic_free_by_type,
414         .agp_alloc_page         = agp_generic_alloc_page,
415         .agp_destroy_page       = agp_generic_destroy_page,
416 };
417
418
419 static struct agp_device_ids ati_agp_device_ids[] __devinitdata =
420 {
421         {
422                 .device_id      = PCI_DEVICE_ID_ATI_RS100,
423                 .chipset_name   = "IGP320/M",
424         },
425         {
426                 .device_id      = PCI_DEVICE_ID_ATI_RS200,
427                 .chipset_name   = "IGP330/340/345/350/M",
428         },
429         {
430                 .device_id      = PCI_DEVICE_ID_ATI_RS200_B,
431                 .chipset_name   = "IGP345M",
432         },
433         {
434                 .device_id      = PCI_DEVICE_ID_ATI_RS250,
435                 .chipset_name   = "IGP7000/M",
436         },
437         {
438                 .device_id      = PCI_DEVICE_ID_ATI_RS300_100,
439                 .chipset_name   = "IGP9100/M",
440         },
441         {
442                 .device_id      = PCI_DEVICE_ID_ATI_RS300_133,
443                 .chipset_name   = "IGP9100/M",
444         },
445         {
446                 .device_id      = PCI_DEVICE_ID_ATI_RS300_166,
447                 .chipset_name   = "IGP9100/M",
448         },
449         {
450                 .device_id      = PCI_DEVICE_ID_ATI_RS300_200,
451                 .chipset_name   = "IGP9100/M",
452         },
453         { }, /* dummy final entry, always present */
454 };
455
456 static int __devinit agp_ati_probe(struct pci_dev *pdev,
457                                    const struct pci_device_id *ent)
458 {
459         struct agp_device_ids *devs = ati_agp_device_ids;
460         struct agp_bridge_data *bridge;
461         u8 cap_ptr;
462         int j;
463
464         cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
465         if (!cap_ptr)
466                 return -ENODEV;
467
468         /* probe for known chipsets */
469         for (j = 0; devs[j].chipset_name; j++) {
470                 if (pdev->device == devs[j].device_id)
471                         goto found;
472         }
473
474         printk(KERN_ERR PFX
475              "Unsupported Ati chipset (device id: %04x)\n", pdev->device);
476         return -ENODEV;
477
478 found:
479         bridge = agp_alloc_bridge();
480         if (!bridge)
481                 return -ENOMEM;
482
483         bridge->dev = pdev;
484         bridge->capndx = cap_ptr;
485         
486         bridge->driver = &ati_generic_bridge;
487
488
489         printk(KERN_INFO PFX "Detected Ati %s chipset\n",
490                         devs[j].chipset_name);
491
492         /* Fill in the mode register */
493         pci_read_config_dword(pdev,
494                         bridge->capndx+PCI_AGP_STATUS,
495                         &bridge->mode);
496
497         pci_set_drvdata(pdev, bridge);
498         return agp_add_bridge(bridge);
499 }
500
501 static void __devexit agp_ati_remove(struct pci_dev *pdev)
502 {
503         struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
504
505         agp_remove_bridge(bridge);
506         agp_put_bridge(bridge);
507 }
508
509 static struct pci_device_id agp_ati_pci_table[] = {
510         {
511         .class          = (PCI_CLASS_BRIDGE_HOST << 8),
512         .class_mask     = ~0,
513         .vendor         = PCI_VENDOR_ID_ATI,
514         .device         = PCI_ANY_ID,
515         .subvendor      = PCI_ANY_ID,
516         .subdevice      = PCI_ANY_ID,
517         },
518         { }
519 };
520
521 MODULE_DEVICE_TABLE(pci, agp_ati_pci_table);
522
523 static struct pci_driver agp_ati_pci_driver = {
524         .name           = "agpgart-ati",
525         .id_table       = agp_ati_pci_table,
526         .probe          = agp_ati_probe,
527         .remove         = agp_ati_remove,
528 };
529
530 static int __init agp_ati_init(void)
531 {
532         if (agp_off)
533                 return -EINVAL;
534         return pci_register_driver(&agp_ati_pci_driver);
535 }
536
537 static void __exit agp_ati_cleanup(void)
538 {
539         pci_unregister_driver(&agp_ati_pci_driver);
540 }
541
542 module_init(agp_ati_init);
543 module_exit(agp_ati_cleanup);
544
545 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
546 MODULE_LICENSE("GPL and additional rights");
547