drm/msm/gpu: add per-process pagetables param (d674c963) · Commits · 戴 / test

For now it always returns '0' (false), but once the iommu work is in place to enable per-process pagetables we can update the value returned. Userspace needs to know this to make an informed decision about exposing KHR_robustness. Signed-off-by:

Rob Clark <robdclark@chromium.org> Reviewed-by:

Jordan Crouse <jcrouse@codeaurora.org>

drivers/gpu/drm/msm/adreno/adreno_gpu.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -63,6 +63,9 @@ int adreno_get_param(struct msm_gpu gpu, uint32_t param, uint64_t value)
		case MSM_PARAM_NR_RINGS:
		*value = gpu->nr_rings;
		return 0;
		case MSM_PARAM_PP_PGTABLE:
		*value = 0;
		return 0;
		default:
		DBG("%s: invalid param: %u", gpu->name, param);
		return -EINVAL;

include/uapi/drm/msm_drm.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -74,6 +74,7 @@ struct drm_msm_timespec {
		#define MSM_PARAM_TIMESTAMP 0x05
		#define MSM_PARAM_GMEM_BASE 0x06
		#define MSM_PARAM_NR_RINGS 0x07
		#define MSM_PARAM_PP_PGTABLE 0x08 /* => 1 for per-process pagetables, else 0 */

		struct drm_msm_param {
		__u32 pipe; /* in, MSM_PIPE_x */

Admin message