aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/char/drm/drm_memory.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/char/drm/drm_memory.h')
-rw-r--r--drivers/char/drm/drm_memory.h116
1 files changed, 10 insertions, 106 deletions
diff --git a/drivers/char/drm/drm_memory.h b/drivers/char/drm/drm_memory.h
index 3732a61..645a088 100644
--- a/drivers/char/drm/drm_memory.h
+++ b/drivers/char/drm/drm_memory.h
@@ -60,67 +60,11 @@
/*
* Find the drm_map that covers the range [offset, offset+size).
*/
-static inline drm_map_t *drm_lookup_map(unsigned long offset,
- unsigned long size, drm_device_t * dev)
-{
- struct list_head *list;
- drm_map_list_t *r_list;
- drm_map_t *map;
-
- list_for_each(list, &dev->maplist->head) {
- r_list = (drm_map_list_t *) list;
- map = r_list->map;
- if (!map)
- continue;
- if (map->offset <= offset
- && (offset + size) <= (map->offset + map->size))
- return map;
- }
- return NULL;
-}
-
-static inline void *agp_remap(unsigned long offset, unsigned long size,
- drm_device_t * dev)
-{
- unsigned long *phys_addr_map, i, num_pages =
- PAGE_ALIGN(size) / PAGE_SIZE;
- struct drm_agp_mem *agpmem;
- struct page **page_map;
- void *addr;
-
- size = PAGE_ALIGN(size);
-
-#ifdef __alpha__
- offset -= dev->hose->mem_space->start;
-#endif
+drm_map_t *drm_lookup_map(unsigned long offset,
+ unsigned long size, drm_device_t * dev);
- for (agpmem = dev->agp->memory; agpmem; agpmem = agpmem->next)
- if (agpmem->bound <= offset
- && (agpmem->bound + (agpmem->pages << PAGE_SHIFT)) >=
- (offset + size))
- break;
- if (!agpmem)
- return NULL;
-
- /*
- * OK, we're mapping AGP space on a chipset/platform on which memory accesses by
- * the CPU do not get remapped by the GART. We fix this by using the kernel's
- * page-table instead (that's probably faster anyhow...).
- */
- /* note: use vmalloc() because num_pages could be large... */
- page_map = vmalloc(num_pages * sizeof(struct page *));
- if (!page_map)
- return NULL;
-
- phys_addr_map =
- agpmem->memory->memory + (offset - agpmem->bound) / PAGE_SIZE;
- for (i = 0; i < num_pages; ++i)
- page_map[i] = pfn_to_page(phys_addr_map[i] >> PAGE_SHIFT);
- addr = vmap(page_map, num_pages, VM_IOREMAP, PAGE_AGP);
- vfree(page_map);
-
- return addr;
-}
+void *agp_remap(unsigned long offset, unsigned long size,
+ drm_device_t * dev);
static inline unsigned long drm_follow_page(void *vaddr)
{
@@ -152,51 +96,11 @@ static inline unsigned long drm_follow_page(void *vaddr)
#endif
-static inline void *drm_ioremap(unsigned long offset, unsigned long size,
- drm_device_t * dev)
-{
- if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture) {
- drm_map_t *map = drm_lookup_map(offset, size, dev);
+void *drm_ioremap(unsigned long offset, unsigned long size,
+ drm_device_t * dev);
- if (map && map->type == _DRM_AGP)
- return agp_remap(offset, size, dev);
- }
- return ioremap(offset, size);
-}
+void *drm_ioremap_nocache(unsigned long offset,
+ unsigned long size, drm_device_t * dev);
-static inline void *drm_ioremap_nocache(unsigned long offset,
- unsigned long size, drm_device_t * dev)
-{
- if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture) {
- drm_map_t *map = drm_lookup_map(offset, size, dev);
-
- if (map && map->type == _DRM_AGP)
- return agp_remap(offset, size, dev);
- }
- return ioremap_nocache(offset, size);
-}
-
-static inline void drm_ioremapfree(void *pt, unsigned long size,
- drm_device_t * dev)
-{
- /*
- * This is a bit ugly. It would be much cleaner if the DRM API would use separate
- * routines for handling mappings in the AGP space. Hopefully this can be done in
- * a future revision of the interface...
- */
- if (drm_core_has_AGP(dev) && dev->agp && dev->agp->cant_use_aperture
- && ((unsigned long)pt >= VMALLOC_START
- && (unsigned long)pt < VMALLOC_END)) {
- unsigned long offset;
- drm_map_t *map;
-
- offset = drm_follow_page(pt) | ((unsigned long)pt & ~PAGE_MASK);
- map = drm_lookup_map(offset, size, dev);
- if (map && map->type == _DRM_AGP) {
- vunmap(pt);
- return;
- }
- }
-
- iounmap(pt);
-}
+void drm_ioremapfree(void *pt, unsigned long size,
+ drm_device_t * dev);