diff options
Diffstat (limited to 'linux-core/drm_bufs.c')
| -rw-r--r-- | linux-core/drm_bufs.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c index 9ce7cfff..932d7a3f 100644 --- a/linux-core/drm_bufs.c +++ b/linux-core/drm_bufs.c @@ -158,6 +158,26 @@ int DRM(addmap)( struct inode *inode, struct file *filp, map->offset = map->offset + dev->sg->handle; break; + /* The offset here is the agp memory blocks handle, try and find it + * and see if it matches. MMap can now map it using kernel routines. + */ +#if __REALLY_HAVE_AGP + case _DRM_AGP_MEM: + { + drm_agp_mem_t *entry; + + entry = DRM(agp_lookup_entry)(dev, map->offset); + if(!entry || !DRM(agp_supports_vma_map)() || + map->size > + entry->pages << dev->agp->agp_page_shift) { + DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); + return -EINVAL; + } + map->offset = 0; + map->handle = entry; + } + break; +#endif default: DRM(free)( map, sizeof(*map), DRM_MEM_MAPS ); return -EINVAL; @@ -253,6 +273,7 @@ int DRM(rmmap)(struct inode *inode, struct file *filp, break; case _DRM_AGP: case _DRM_SCATTER_GATHER: + case _DRM_AGP_MEM: break; } DRM(free)(map, sizeof(*map), DRM_MEM_MAPS); |