Use it to get the doorbell range and aggregated doorbell
enablement and offset. This patch only supports VCN for now.
V2 - drop VPE and use vcn.agdb_offset saved in
umsch_mm_agdb_index_init() (suggested by Alex)
Signed-off-by: David (Ming Qiang) Wu <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 18 ++++++++++++++++++
include/uapi/drm/amdgpu_drm.h | 13 +++++++++++++
2 files changed, 31 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index f512b6ec6c53..1b935d285053 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -1425,6 +1425,24 @@ int amdgpu_info_ioctl(struct drm_device *dev, void
*data, struct drm_file *filp)
return -EINVAL;
}
}
+ case AMDGPU_INFO_DOORBELL: {
+ struct drm_amdgpu_info_doorbell doorbell_info = {};
+ /* note: may need to check asic_type */
+ switch (info->query_hw_ip.type) {
+ case AMDGPU_HW_IP_VCN_ENC:
+ if (adev->agdb_bo) {
+ doorbell_info.agdb_enable = 1;
+ doorbell_info.agdb_offset =
adev->vcn.agdb_offset;
+ }
+ doorbell_info.index_start =
adev->doorbell_index.vcn.vcn_ring0_1 << 1;
+ doorbell_info.index_end =
(adev->doorbell_index.vcn.vcn_ring6_7 << 1) + 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return copy_to_user(out, &doorbell_info,
+ min((size_t)size, sizeof(doorbell_info))) ?
-EFAULT : 0;
+ }
default:
DRM_DEBUG_KMS("Invalid request %d\n", info->query);
return -EINVAL;
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 3e7c12d5987f..902201303700 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -1279,6 +1279,8 @@ struct drm_amdgpu_cs_chunk_cp_gfx_shadow {
#define AMDGPU_INFO_GPUVM_FAULT 0x23
/* query FW object size and alignment */
#define AMDGPU_INFO_UQ_FW_AREAS 0x24
+/* query doorbell info */
+#define AMDGPU_INFO_DOORBELL 0x25
#define AMDGPU_INFO_MMR_SE_INDEX_SHIFT 0
#define AMDGPU_INFO_MMR_SE_INDEX_MASK 0xff
@@ -1688,6 +1690,17 @@ struct drm_color_ctm_3x4 {
__u64 matrix[12];
};
+/* for AMDGPU_INFO_DOORBELL query */
+struct drm_amdgpu_info_doorbell {
+ __u32 index_start;
+ /* could be equal to index_start */
+ __u32 index_end;
+ /* aggregated doorbell, 0 for disable */
+ __u32 agdb_enable;
+ /* if agdb_enable, it is a value in [index_start, index_end] */
+ __u32 agdb_offset;
+};
+
#if defined(__cplusplus)
}
#endif
--
2.43.0
