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Diffstat (limited to 'linux-core/drm_ttm.c')
-rw-r--r--linux-core/drm_ttm.c63
1 files changed, 28 insertions, 35 deletions
diff --git a/linux-core/drm_ttm.c b/linux-core/drm_ttm.c
index 4d51f9fe..8a44070d 100644
--- a/linux-core/drm_ttm.c
+++ b/linux-core/drm_ttm.c
@@ -46,7 +46,7 @@ EXPORT_SYMBOL(drm_ttm_cache_flush);
* Use kmalloc if possible. Otherwise fall back to vmalloc.
*/
-static void ttm_alloc_pages(struct drm_ttm * ttm)
+static void ttm_alloc_pages(struct drm_ttm *ttm)
{
unsigned long size = ttm->num_pages * sizeof(*ttm->pages);
ttm->pages = NULL;
@@ -54,20 +54,19 @@ static void ttm_alloc_pages(struct drm_ttm * ttm)
if (drm_alloc_memctl(size))
return;
- if (size <= PAGE_SIZE) {
+ if (size <= PAGE_SIZE)
ttm->pages = drm_calloc(1, size, DRM_MEM_TTM);
- }
+
if (!ttm->pages) {
ttm->pages = vmalloc_user(size);
if (ttm->pages)
ttm->page_flags |= DRM_TTM_PAGE_VMALLOC;
}
- if (!ttm->pages) {
+ if (!ttm->pages)
drm_free_memctl(size);
- }
}
-static void ttm_free_pages(struct drm_ttm * ttm)
+static void ttm_free_pages(struct drm_ttm *ttm)
{
unsigned long size = ttm->num_pages * sizeof(*ttm->pages);
@@ -85,9 +84,9 @@ static struct page *drm_ttm_alloc_page(void)
{
struct page *page;
- if (drm_alloc_memctl(PAGE_SIZE)) {
+ if (drm_alloc_memctl(PAGE_SIZE))
return NULL;
- }
+
page = alloc_page(GFP_KERNEL | __GFP_ZERO | GFP_DMA32);
if (!page) {
drm_free_memctl(PAGE_SIZE);
@@ -106,7 +105,7 @@ static struct page *drm_ttm_alloc_page(void)
* for range of pages in a ttm.
*/
-static int drm_set_caching(struct drm_ttm * ttm, int noncached)
+static int drm_set_caching(struct drm_ttm *ttm, int noncached)
{
int i;
struct page **cur_page;
@@ -153,7 +152,7 @@ static void drm_ttm_free_user_pages(struct drm_ttm *ttm)
dirty = ((ttm->page_flags & DRM_TTM_PAGE_USER_DIRTY) != 0);
down_read(&mm->mmap_sem);
- for (i=0; i<ttm->num_pages; ++i) {
+ for (i = 0; i < ttm->num_pages; ++i) {
page = ttm->pages[i];
if (page == NULL)
continue;
@@ -186,14 +185,10 @@ static void drm_ttm_free_alloced_pages(struct drm_ttm *ttm)
#else
ClearPageReserved(*cur_page);
#endif
- if (page_count(*cur_page) != 1) {
- DRM_ERROR("Erroneous page count. "
- "Leaking pages.\n");
- }
- if (page_mapped(*cur_page)) {
- DRM_ERROR("Erroneous map count. "
- "Leaking page mappings.\n");
- }
+ if (page_count(*cur_page) != 1)
+ DRM_ERROR("Erroneous page count. Leaking pages.\n");
+ if (page_mapped(*cur_page))
+ DRM_ERROR("Erroneous map count. Leaking page mappings.\n");
__free_page(*cur_page);
drm_free_memctl(PAGE_SIZE);
--bm->cur_pages;
@@ -205,7 +200,7 @@ static void drm_ttm_free_alloced_pages(struct drm_ttm *ttm)
* Free all resources associated with a ttm.
*/
-int drm_destroy_ttm(struct drm_ttm * ttm)
+int drm_destroy_ttm(struct drm_ttm *ttm)
{
struct drm_ttm_backend *be;
@@ -234,7 +229,7 @@ int drm_destroy_ttm(struct drm_ttm * ttm)
return 0;
}
-struct page *drm_ttm_get_page(struct drm_ttm * ttm, int index)
+struct page *drm_ttm_get_page(struct drm_ttm *ttm, int index)
{
struct page *p;
struct drm_buffer_manager *bm = &ttm->dev->bm;
@@ -283,10 +278,9 @@ int drm_ttm_set_user(struct drm_ttm *ttm,
return -ENOMEM;
}
- for (i=0; i<num_pages; ++i) {
- if (ttm->pages[i] == NULL) {
+ for (i = 0; i < num_pages; ++i) {
+ if (ttm->pages[i] == NULL)
ttm->pages[i] = ttm->dummy_read_page;
- }
}
return 0;
@@ -294,7 +288,7 @@ int drm_ttm_set_user(struct drm_ttm *ttm,
-int drm_ttm_populate(struct drm_ttm * ttm)
+int drm_ttm_populate(struct drm_ttm *ttm)
{
struct page *page;
unsigned long i;
@@ -318,7 +312,7 @@ int drm_ttm_populate(struct drm_ttm * ttm)
* Initialize a ttm.
*/
-struct drm_ttm *drm_ttm_init(struct drm_device * dev, unsigned long size)
+struct drm_ttm *drm_ttm_init(struct drm_device *dev, unsigned long size)
{
struct drm_bo_driver *bo_driver = dev->driver->bo_driver;
struct drm_ttm *ttm;
@@ -362,7 +356,7 @@ struct drm_ttm *drm_ttm_init(struct drm_device * dev, unsigned long size)
* Unbind a ttm region from the aperture.
*/
-void drm_ttm_evict(struct drm_ttm * ttm)
+void drm_ttm_evict(struct drm_ttm *ttm)
{
struct drm_ttm_backend *be = ttm->be;
int ret;
@@ -375,19 +369,18 @@ void drm_ttm_evict(struct drm_ttm * ttm)
ttm->state = ttm_evicted;
}
-void drm_ttm_fixup_caching(struct drm_ttm * ttm)
+void drm_ttm_fixup_caching(struct drm_ttm *ttm)
{
if (ttm->state == ttm_evicted) {
struct drm_ttm_backend *be = ttm->be;
- if (be->func->needs_ub_cache_adjust(be)) {
+ if (be->func->needs_ub_cache_adjust(be))
drm_set_caching(ttm, 0);
- }
ttm->state = ttm_unbound;
}
}
-void drm_ttm_unbind(struct drm_ttm * ttm)
+void drm_ttm_unbind(struct drm_ttm *ttm)
{
if (ttm->state == ttm_bound)
drm_ttm_evict(ttm);
@@ -395,7 +388,7 @@ void drm_ttm_unbind(struct drm_ttm * ttm)
drm_ttm_fixup_caching(ttm);
}
-int drm_bind_ttm(struct drm_ttm * ttm, struct drm_bo_mem_reg *bo_mem)
+int drm_bind_ttm(struct drm_ttm *ttm, struct drm_bo_mem_reg *bo_mem)
{
struct drm_bo_driver *bo_driver = ttm->dev->driver->bo_driver;
int ret = 0;
@@ -412,13 +405,14 @@ int drm_bind_ttm(struct drm_ttm * ttm, struct drm_bo_mem_reg *bo_mem)
if (ret)
return ret;
- if (ttm->state == ttm_unbound && !(bo_mem->flags & DRM_BO_FLAG_CACHED)) {
+ if (ttm->state == ttm_unbound && !(bo_mem->flags & DRM_BO_FLAG_CACHED))
drm_set_caching(ttm, DRM_TTM_PAGE_UNCACHED);
- } else if ((bo_mem->flags & DRM_BO_FLAG_CACHED_MAPPED) &&
+ else if ((bo_mem->flags & DRM_BO_FLAG_CACHED_MAPPED) &&
bo_driver->ttm_cache_flush)
bo_driver->ttm_cache_flush(ttm);
- if ((ret = be->func->bind(be, bo_mem))) {
+ ret = be->func->bind(be, bo_mem);
+ if (ret) {
ttm->state = ttm_evicted;
DRM_ERROR("Couldn't bind backend.\n");
return ret;
@@ -429,5 +423,4 @@ int drm_bind_ttm(struct drm_ttm * ttm, struct drm_bo_mem_reg *bo_mem)
ttm->page_flags |= DRM_TTM_PAGE_USER_DIRTY;
return 0;
}
-
EXPORT_SYMBOL(drm_bind_ttm);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 06:34:40 +0000