summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/v3d
diff options
context:
space:
mode:
authorDave Airlie <airlied@redhat.com>2020-09-17 07:18:51 +0300
committerDave Airlie <airlied@redhat.com>2020-09-17 09:07:11 +0300
commitb40be05ed255d9a0257fb66ab2728ecca2c9d597 (patch)
treebf69d734e4413c24ce2e60f273d1de637a4aea5e /drivers/gpu/drm/v3d
parent818280d5adf1d80e78f95821815148abe9407e14 (diff)
parentbe0704beb229431f206fee3ddd65fa2c5eebdce3 (diff)
downloadlinux-b40be05ed255d9a0257fb66ab2728ecca2c9d597.tar.xz
Merge branch 'for-5.10-drm-sg-fix' of https://github.com/mszyprow/linux into drm-next
Please pull a set of fixes for various DRM drivers that finally resolve incorrect usage of the scatterlists (struct sg_table nents and orig_nents entries), what causes issues when IOMMU is used. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200910080505.24456-1-m.szyprowski@samsung.com
Diffstat (limited to 'drivers/gpu/drm/v3d')
-rw-r--r--drivers/gpu/drm/v3d/v3d_mmu.c13
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/gpu/drm/v3d/v3d_mmu.c b/drivers/gpu/drm/v3d/v3d_mmu.c
index 3b81ea28c0bb..5a453532901f 100644
--- a/drivers/gpu/drm/v3d/v3d_mmu.c
+++ b/drivers/gpu/drm/v3d/v3d_mmu.c
@@ -90,18 +90,17 @@ void v3d_mmu_insert_ptes(struct v3d_bo *bo)
struct v3d_dev *v3d = to_v3d_dev(shmem_obj->base.dev);
u32 page = bo->node.start;
u32 page_prot = V3D_PTE_WRITEABLE | V3D_PTE_VALID;
- unsigned int count;
- struct scatterlist *sgl;
+ struct sg_dma_page_iter dma_iter;
- for_each_sg(shmem_obj->sgt->sgl, sgl, shmem_obj->sgt->nents, count) {
- u32 page_address = sg_dma_address(sgl) >> V3D_MMU_PAGE_SHIFT;
+ for_each_sgtable_dma_page(shmem_obj->sgt, &dma_iter, 0) {
+ dma_addr_t dma_addr = sg_page_iter_dma_address(&dma_iter);
+ u32 page_address = dma_addr >> V3D_MMU_PAGE_SHIFT;
u32 pte = page_prot | page_address;
u32 i;
- BUG_ON(page_address + (sg_dma_len(sgl) >> V3D_MMU_PAGE_SHIFT) >=
+ BUG_ON(page_address + (PAGE_SIZE >> V3D_MMU_PAGE_SHIFT) >=
BIT(24));
-
- for (i = 0; i < sg_dma_len(sgl) >> V3D_MMU_PAGE_SHIFT; i++)
+ for (i = 0; i < PAGE_SIZE >> V3D_MMU_PAGE_SHIFT; i++)
v3d->pt[page++] = pte + i;
}