media: mediatek: vcodec: fix AV1 decode fail for 36bit iova

Fix av1 decode fail when iova is 36bit.

Decoder hardware will access incorrect iova address when tile buffer is
36bit, it will lead to iommu fault when hardware access dram data.

Fixes: 2f5d0aef37c6 ("media: mediatek: vcodec: support stateless AV1 decoder")
Signed-off-by: Xiaoyong Lu<xiaoyong.lu@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_av1_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_av1_req_lat_if.c
index 404a1a2..b00b423 100644 (file)
--- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_av1_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_av1_req_lat_if.c
@@ -1658,9 +1658,9 @@ static void vdec_av1_slice_setup_tile_buffer(struct vdec_av1_slice_instance *ins
        u32 allow_update_cdf = 0;
        u32 sb_boundary_x_m1 = 0, sb_boundary_y_m1 = 0;
        int tile_info_base;
-       u32 tile_buf_pa;
+       u64 tile_buf_pa;
        u32 *tile_info_buf = instance->tile.va;
-       u32 pa = (u32)bs->dma_addr;
+       u64 pa = (u64)bs->dma_addr;
 
        if (uh->disable_cdf_update == 0)
                allow_update_cdf = 1;
@@ -1673,8 +1673,12 @@ static void vdec_av1_slice_setup_tile_buffer(struct vdec_av1_slice_instance *ins
                tile_info_buf[tile_info_base + 0] = (tile_group->tile_size[tile_num] << 3);
                tile_buf_pa = pa + tile_group->tile_start_offset[tile_num];
 
-               tile_info_buf[tile_info_base + 1] = (tile_buf_pa >> 4) << 4;
-               tile_info_buf[tile_info_base + 2] = (tile_buf_pa % 16) << 3;
+               /* save av1 tile high 4bits(bit 32-35) address in lower 4 bits position
+                * and clear original for hw requirement.
+                */
+               tile_info_buf[tile_info_base + 1] = (tile_buf_pa & 0xFFFFFFF0ull) |
+                       ((tile_buf_pa & 0xF00000000ull) >> 32);
+               tile_info_buf[tile_info_base + 2] = (tile_buf_pa & 0xFull) << 3;
 
                sb_boundary_x_m1 =
                        (tile->mi_col_starts[tile_col + 1] - tile->mi_col_starts[tile_col] - 1) &