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drm/amdgpu: add new AMDGPU_INFO subquery for userq objects

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This patch adds a new subquery (AMDGPU_INFO_UQ_FW_AREAS) in
AMDGPU_INFO_IOCTL to get the size and alignment of shadow
and csa objects from the FW setup. This information is
required for the userqueue consumers.

V2: Added Alex's suggestions and addressed review comments:
- make this query IP specific (GFX/SDMA etc)
- give a better title (AMDGPU_INFO_UQ_METADATA)
- restructured the code as per sample code shared by Alex

V3: Split the UAPI patch from shadow_size_fn modifications
V4: Addressed review comments from UAPI review (Marek/Pierre-Eric)
    - Change the query name to AMDGPU_INFO_UQ_FW_AREAS
    - remove unused inpur parameter for AMDGPU_HW_IP*

UAPI link: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/400/

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Arvind Yadav <arvind.yadav@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Shashank Sharma
2024-10-30 15:39:42 +01:00
committed by Alex Deucher
parent aed7caf2d4
commit 90c448fef3
2 changed files with 76 additions and 0 deletions
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36
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@@ -371,6 +371,26 @@ static int amdgpu_firmware_info(struct drm_amdgpu_info_firmware *fw_info,
return 0;
}
static int amdgpu_userq_metadata_info_gfx(struct amdgpu_device *adev,
struct drm_amdgpu_info *info,
struct drm_amdgpu_info_uq_metadata_gfx *meta)
{
int ret = -EOPNOTSUPP;
if (adev->gfx.funcs->get_gfx_shadow_info) {
struct amdgpu_gfx_shadow_info shadow = {};
adev->gfx.funcs->get_gfx_shadow_info(adev, &shadow, true);
meta->shadow_size = shadow.shadow_size;
meta->shadow_alignment = shadow.shadow_alignment;
meta->csa_size = shadow.csa_size;
meta->csa_alignment = shadow.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)
@@ -1294,6 +1314,22 @@ out:
return copy_to_user(out, &gpuvm_fault,
min((size_t)size, sizeof(gpuvm_fault))) ? -EFAULT : 0;
}
case AMDGPU_INFO_UQ_FW_AREAS: {
struct drm_amdgpu_info_uq_metadata meta_info = {};
switch (info->query_hw_ip.type) {
case AMDGPU_HW_IP_GFX:
ret = amdgpu_userq_metadata_info_gfx(adev, info, &meta_info.gfx);
if (ret)
return ret;
ret = copy_to_user(out, &meta_info,
min((size_t)size, sizeof(meta_info))) ? -EFAULT : 0;
return 0;
default:
return -EINVAL;
}
}
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->query);
return -EINVAL;

40
include/uapi/drm/amdgpu_drm.h
View File

@@ -1193,6 +1193,8 @@ struct drm_amdgpu_cs_chunk_cp_gfx_shadow {
#define AMDGPU_INFO_MAX_IBS 0x22
/* query last page fault info */
#define AMDGPU_INFO_GPUVM_FAULT 0x23
/* query FW object size and alignment */
#define AMDGPU_INFO_UQ_FW_AREAS 0x24
#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff
@@ -1469,6 +1471,27 @@ struct drm_amdgpu_info_hw_ip {
__u32 ip_discovery_version;
};
/* GFX metadata BO sizes and alignment info (in bytes) */
struct drm_amdgpu_info_uq_fw_areas_gfx {
/* shadow area size */
__u32 shadow_size;
/* shadow area base virtual mem alignment */
__u32 shadow_alignment;
/* context save area size */
__u32 csa_size;
/* context save area base virtual mem alignment */
__u32 csa_alignment;
};
/* IP specific fw related information used in the
* subquery AMDGPU_INFO_UQ_FW_AREAS
*/
struct drm_amdgpu_info_uq_fw_areas {
union {
struct drm_amdgpu_info_uq_fw_areas_gfx gfx;
};
};
struct drm_amdgpu_info_num_handles {
/** Max handles as supported by firmware for UVD */
__u32 uvd_max_handles;
@@ -1532,6 +1555,23 @@ struct drm_amdgpu_info_gpuvm_fault {
__u32 vmhub;
};
struct drm_amdgpu_info_uq_metadata_gfx {
/* shadow area size for gfx11 */
__u32 shadow_size;
/* shadow area base virtual alignment for gfx11 */
__u32 shadow_alignment;
/* context save area size for gfx11 */
__u32 csa_size;
/* context save area base virtual alignment for gfx11 */
__u32 csa_alignment;
};
struct drm_amdgpu_info_uq_metadata {
union {
struct drm_amdgpu_info_uq_metadata_gfx gfx;
};
};
/*
* Supported GPU families
*/