Merge branch 'stable/ttm.pci-api.v5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen into drm-next

* 'stable/ttm.pci-api.v5' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  ttm: Include the 'struct dev' when using the DMA API.
  nouveau/ttm/PCIe: Use dma_addr if TTM has set it.
  radeon/ttm/PCIe: Use dma_addr if TTM has set it.
  ttm: Expand (*populate) to support an array of DMA addresses.
  ttm: Utilize the DMA API for pages that have TTM_PAGE_FLAG_DMA32 set.
  ttm: Introduce a placeholder for DMA (bus) addresses.

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 1272e4b6a1d4..c345e899e881 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -513,6 +513,7 @@ int radeon_ttm_init(struct radeon_device *rdev)
         if (r) {
                 return r;
         }
+        rdev->mman.bdev.dev = rdev->dev;
         /* No others user of address space so set it to 0 */
         r = ttm_bo_device_init(&rdev->mman.bdev,
                                rdev->mman.bo_global_ref.ref.object,
@@ -647,6 +648,7 @@ struct radeon_ttm_backend {
         unsigned long                   num_pages;
         struct page                     **pages;
         struct page                     *dummy_read_page;
+        dma_addr_t                      *dma_addrs;
         bool                            populated;
         bool                            bound;
         unsigned                        offset;
@@ -655,12 +657,14 @@ struct radeon_ttm_backend {
 static int radeon_ttm_backend_populate(struct ttm_backend *backend,
                                        unsigned long num_pages,
                                        struct page **pages,
-                                       struct page *dummy_read_page)
+                                       struct page *dummy_read_page,
+                                       dma_addr_t *dma_addrs)
 {
         struct radeon_ttm_backend *gtt;
 
         gtt = container_of(backend, struct radeon_ttm_backend, backend);
         gtt->pages = pages;
+        gtt->dma_addrs = dma_addrs;
         gtt->num_pages = num_pages;
         gtt->dummy_read_page = dummy_read_page;
         gtt->populated = true;
@@ -673,6 +677,7 @@ static void radeon_ttm_backend_clear(struct ttm_backend *backend)
 
         gtt = container_of(backend, struct radeon_ttm_backend, backend);
         gtt->pages = NULL;
+        gtt->dma_addrs = NULL;
         gtt->num_pages = 0;
         gtt->dummy_read_page = NULL;
         gtt->populated = false;
@@ -693,7 +698,7 @@ static int radeon_ttm_backend_bind(struct ttm_backend *backend,
                      gtt->num_pages, bo_mem, backend);
         }
         r = radeon_gart_bind(gtt->rdev, gtt->offset,
-                             gtt->num_pages, gtt->pages);
+                             gtt->num_pages, gtt->pages, gtt->dma_addrs);
         if (r) {
                 DRM_ERROR("failed to bind %lu pages at 0x%08X\n",
                           gtt->num_pages, gtt->offset);