diff options
Diffstat (limited to 'linux-core/drm_bufs.c')
| -rw-r--r-- | linux-core/drm_bufs.c | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/linux-core/drm_bufs.c b/linux-core/drm_bufs.c index 60eca60c..75c75c2f 100644 --- a/linux-core/drm_bufs.c +++ b/linux-core/drm_bufs.c @@ -53,7 +53,7 @@ struct drm_map_list *drm_find_matching_map(struct drm_device *dev, drm_local_map struct drm_map_list *entry; list_for_each_entry(entry, &dev->maplist, head) { if (entry->map && map->type == entry->map->type && - ((entry->map->offset == map->offset) || + ((entry->map->offset == map->offset) || (map->type == _DRM_SHM && map->flags==_DRM_CONTAINS_LOCK))) { return entry; } @@ -80,10 +80,10 @@ static int drm_map_handle(struct drm_device *dev, struct drm_hash_item *hash, int ret; hash->key = user_token >> PAGE_SHIFT; ret = drm_ht_insert_item(&dev->map_hash, hash); - if (ret != -EINVAL) + if (ret != -EINVAL) return ret; } - return drm_ht_just_insert_please(&dev->map_hash, hash, + return drm_ht_just_insert_please(&dev->map_hash, hash, user_token, 32 - PAGE_SHIFT - 3, 0, DRM_MAP_HASH_OFFSET >> PAGE_SHIFT); } @@ -173,12 +173,17 @@ static int drm_addmap_core(struct drm_device *dev, unsigned int offset, if (drm_core_has_MTRR(dev)) { if (map->type == _DRM_FRAME_BUFFER || (map->flags & _DRM_WRITE_COMBINING)) { - map->mtrr = mtrr_add(map->offset, map->size, - MTRR_TYPE_WRCOMB, 1); + map->mtrr = mtrr_add(map->offset, map->size, + MTRR_TYPE_WRCOMB, 1); } } - if (map->type == _DRM_REGISTERS) + if (map->type == _DRM_REGISTERS) { map->handle = ioremap(map->offset, map->size); + if (!map->handle) { + drm_free(map, sizeof(*map), DRM_MEM_MAPS); + return -ENOMEM; + } + } break; case _DRM_SHM: list = drm_find_matching_map(dev, map); @@ -297,7 +302,7 @@ static int drm_addmap_core(struct drm_device *dev, unsigned int offset, /* Assign a 32-bit handle */ - user_token = (map->type == _DRM_SHM) ? (unsigned long) map->handle : + user_token = (map->type == _DRM_SHM) ? (unsigned long) map->handle : map->offset; ret = drm_map_handle(dev, &list->hash, user_token, 0); @@ -379,7 +384,7 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map) list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { if (r_list->map == map) { list_del(&r_list->head); - drm_ht_remove_key(&dev->map_hash, + drm_ht_remove_key(&dev->map_hash, r_list->user_token >> PAGE_SHIFT); drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS); found = 1; @@ -387,9 +392,9 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map) } } - if (!found) { + if (!found) return -EINVAL; - } + /* List has wrapped around to the head pointer, or it's empty and we * didn't find anything. */ @@ -494,7 +499,8 @@ int drm_rmmap_ioctl(struct drm_device *dev, void *data, * * Frees any pages and buffers associated with the given entry. */ -static void drm_cleanup_buf_error(struct drm_device *dev, struct drm_buf_entry * entry) +static void drm_cleanup_buf_error(struct drm_device *dev, + struct drm_buf_entry *entry) { int i; @@ -529,7 +535,7 @@ static void drm_cleanup_buf_error(struct drm_device *dev, struct drm_buf_entry * #if __OS_HAS_AGP /** - * Add AGP buffers for DMA transfers + * Add AGP buffers for DMA transfers. * * \param dev struct drm_device to which the buffers are to be added. * \param request pointer to a struct drm_buf_desc describing the request. @@ -539,7 +545,7 @@ static void drm_cleanup_buf_error(struct drm_device *dev, struct drm_buf_entry * * reallocates the buffer list of the same size order to accommodate the new * buffers. */ -int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request) +int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc *request) { struct drm_device_dma *dma = dev->dma; struct drm_buf_entry *entry; @@ -709,7 +715,7 @@ int drm_addbufs_agp(struct drm_device *dev, struct drm_buf_desc * request) EXPORT_SYMBOL(drm_addbufs_agp); #endif /* __OS_HAS_AGP */ -int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request) +int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc *request) { struct drm_device_dma *dma = dev->dma; int count; @@ -821,9 +827,9 @@ int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request) page_count = 0; while (entry->buf_count < count) { - + dmah = drm_pci_alloc(dev, PAGE_SIZE << page_order, 0x1000, 0xfffffffful); - + if (!dmah) { /* Set count correctly so we free the proper amount. */ entry->buf_count = count; @@ -935,7 +941,7 @@ int drm_addbufs_pci(struct drm_device *dev, struct drm_buf_desc * request) } EXPORT_SYMBOL(drm_addbufs_pci); -static int drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc * request) +static int drm_addbufs_sg(struct drm_device *dev, struct drm_buf_desc *request) { struct drm_device_dma *dma = dev->dma; struct drm_buf_entry *entry; @@ -1600,5 +1606,3 @@ int drm_order(unsigned long size) return order; } EXPORT_SYMBOL(drm_order); - - |