drm/radeon: handle more than 10 UVD sessions

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arindam Nath <arindam.nath@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/uvd_v4_2.c b/drivers/gpu/drm/radeon/uvd_v4_2.c
index 205562fa..91613b8 100644
--- a/drivers/gpu/drm/radeon/uvd_v4_2.c
+++ b/drivers/gpu/drm/radeon/uvd_v4_2.c
@@ -53,12 +53,13 @@
 	WREG32(UVD_VCPU_CACHE_SIZE0, size);
 
 	addr += size;
-	size = RADEON_UVD_STACK_SIZE >> 3;
+	size = RADEON_UVD_HEAP_SIZE >> 3;
 	WREG32(UVD_VCPU_CACHE_OFFSET1, addr);
 	WREG32(UVD_VCPU_CACHE_SIZE1, size);
 
 	addr += size;
-	size = RADEON_UVD_HEAP_SIZE >> 3;
+	size = (RADEON_UVD_STACK_SIZE +
+	       (RADEON_UVD_SESSION_SIZE * rdev->uvd.max_handles)) >> 3;
 	WREG32(UVD_VCPU_CACHE_OFFSET2, addr);
 	WREG32(UVD_VCPU_CACHE_SIZE2, size);
 
@@ -70,5 +71,8 @@
 	addr = (rdev->uvd.gpu_addr >> 32) & 0xFF;
 	WREG32(UVD_LMI_EXT40_ADDR, addr | (0x9 << 16) | (0x1 << 31));
 
+	if (rdev->uvd.fw_header_present)
+		WREG32(UVD_GP_SCRATCH4, rdev->uvd.max_handles);
+
 	return 0;
 }