Commit 0030595c authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/amdgpu: Update AMDGPU_INFO_UQ_FW_AREAS query for sdma 

Add a query for sdma queues.  Userspace can use this to
query the size of the CSA buffers for sdma user queues.

Proposed userspace:
https://gitlab.freedesktop.org/yogeshmohan/mesa/-/commits/userq_query



Reviewed-by: default avatarPrike Liang <Prike.Liang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 44b69cf1

drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c

+26 −0
Original line number Diff line number Diff line
@@ -409,6 +409,24 @@ static int amdgpu_userq_metadata_info_compute(struct amdgpu_device *adev, 
	return ret;

}



static int amdgpu_userq_metadata_info_sdma(struct amdgpu_device *adev,

					   struct drm_amdgpu_info *info,

					   struct drm_amdgpu_info_uq_metadata_sdma *meta)

{

	int ret = -EOPNOTSUPP;



	if (adev->sdma.get_csa_info) {

		struct amdgpu_sdma_csa_info csa = {};



		adev->sdma.get_csa_info(adev, &csa);

		meta->csa_size = csa.size;

		meta->csa_alignment = csa.alignment;

		ret = 0;

	}



	return ret;

}



static int amdgpu_hw_ip_info(struct amdgpu_device *adev,

			     struct drm_amdgpu_info *info,

			     struct drm_amdgpu_info_hw_ip *result)
@@ -1386,6 +1404,14 @@ int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) 
			if (ret)

				return ret;



			ret = copy_to_user(out, &meta_info,

						min((size_t)size, sizeof(meta_info))) ? -EFAULT : 0;

			return 0;

		case AMDGPU_HW_IP_DMA:

			ret = amdgpu_userq_metadata_info_sdma(adev, info, &meta_info.sdma);

			if (ret)

				return ret;



			ret = copy_to_user(out, &meta_info,

						min((size_t)size, sizeof(meta_info))) ? -EFAULT : 0;

			return 0;

include/uapi/drm/amdgpu_drm.h

+8 −0
Original line number Diff line number Diff line
@@ -1637,10 +1637,18 @@ struct drm_amdgpu_info_uq_metadata_compute { 
	__u32 eop_alignment;

};



struct drm_amdgpu_info_uq_metadata_sdma {

	/* context save area size for sdma6 */

	__u32 csa_size;

	/* context save area base virtual alignment for sdma6 */

	__u32 csa_alignment;

};



struct drm_amdgpu_info_uq_metadata {

	union {

		struct drm_amdgpu_info_uq_metadata_gfx gfx;

		struct drm_amdgpu_info_uq_metadata_compute compute;

		struct drm_amdgpu_info_uq_metadata_sdma sdma;

	};

};