From ac49797c1815d4f8f04b7053b2998c546283c89e Mon Sep 17 00:00:00 2001 From: Lizhi Hou Date: Mon, 18 Nov 2024 09:29:38 -0800 Subject: [PATCH 0953/5403] accel/amdxdna: Add GEM buffer object management There different types of BOs are supported: - shmem A user application uses shmem BOs as input/output for its workload running on NPU. - device memory heap The fixed size buffer dedicated to the device. - device buffer The buffer object allocated from device memory heap. - command buffer The buffer object created for delivering commands. The command buffer object is small and pinned on creation. New IOCTLs are added: CREATE_BO, GET_BO_INFO, SYNC_BO. SYNC_BO is used to explicitly flush CPU cache for BO memory. Co-developed-by: Min Ma Signed-off-by: Min Ma Reviewed-by: Jeffrey Hugo Signed-off-by: Lizhi Hou Signed-off-by: Jeffrey Hugo Link: https://patchwork.freedesktop.org/patch/msgid/20241118172942.2014541-7-lizhi.hou@amd.com --- include/uapi/drm/amdxdna_accel.h | 77 ++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/include/uapi/drm/amdxdna_accel.h b/include/uapi/drm/amdxdna_accel.h index a0dc821c1363..e3e78b79a8e7 100644 --- a/include/uapi/drm/amdxdna_accel.h +++ b/include/uapi/drm/amdxdna_accel.h @@ -13,7 +13,9 @@ extern "C" { #endif +#define AMDXDNA_INVALID_ADDR (~0UL) #define AMDXDNA_INVALID_CTX_HANDLE 0 +#define AMDXDNA_INVALID_BO_HANDLE 0 enum amdxdna_device_type { AMDXDNA_DEV_TYPE_UNKNOWN = -1, @@ -24,6 +26,9 @@ enum amdxdna_drm_ioctl_id { DRM_AMDXDNA_CREATE_HWCTX, DRM_AMDXDNA_DESTROY_HWCTX, DRM_AMDXDNA_CONFIG_HWCTX, + DRM_AMDXDNA_CREATE_BO, + DRM_AMDXDNA_GET_BO_INFO, + DRM_AMDXDNA_SYNC_BO, }; /** @@ -136,6 +141,66 @@ struct amdxdna_drm_config_hwctx { __u32 pad; }; +enum amdxdna_bo_type { + AMDXDNA_BO_INVALID = 0, + AMDXDNA_BO_SHMEM, + AMDXDNA_BO_DEV_HEAP, + AMDXDNA_BO_DEV, + AMDXDNA_BO_CMD, +}; + +/** + * struct amdxdna_drm_create_bo - Create a buffer object. + * @flags: Buffer flags. MBZ. + * @vaddr: User VA of buffer if applied. MBZ. + * @size: Size in bytes. + * @type: Buffer type. + * @handle: Returned DRM buffer object handle. + */ +struct amdxdna_drm_create_bo { + __u64 flags; + __u64 vaddr; + __u64 size; + __u32 type; + __u32 handle; +}; + +/** + * struct amdxdna_drm_get_bo_info - Get buffer object information. + * @ext: MBZ. + * @ext_flags: MBZ. + * @handle: DRM buffer object handle. + * @pad: Structure padding. + * @map_offset: Returned DRM fake offset for mmap(). + * @vaddr: Returned user VA of buffer. 0 in case user needs mmap(). + * @xdna_addr: Returned XDNA device virtual address. + */ +struct amdxdna_drm_get_bo_info { + __u64 ext; + __u64 ext_flags; + __u32 handle; + __u32 pad; + __u64 map_offset; + __u64 vaddr; + __u64 xdna_addr; +}; + +/** + * struct amdxdna_drm_sync_bo - Sync buffer object. + * @handle: Buffer object handle. + * @direction: Direction of sync, can be from device or to device. + * @offset: Offset in the buffer to sync. + * @size: Size in bytes. + */ +struct amdxdna_drm_sync_bo { + __u32 handle; +#define SYNC_DIRECT_TO_DEVICE 0U +#define SYNC_DIRECT_FROM_DEVICE 1U + __u32 direction; + __u64 offset; + __u64 size; +}; + #define DRM_IOCTL_AMDXDNA_CREATE_HWCTX \ DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CREATE_HWCTX, \ struct amdxdna_drm_create_hwctx) @@ -148,6 +213,18 @@ struct amdxdna_drm_config_hwctx { DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CONFIG_HWCTX, \ struct amdxdna_drm_config_hwctx) +#define DRM_IOCTL_AMDXDNA_CREATE_BO \ + DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_CREATE_BO, \ + struct amdxdna_drm_create_bo) + +#define DRM_IOCTL_AMDXDNA_GET_BO_INFO \ + DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_GET_BO_INFO, \ + struct amdxdna_drm_get_bo_info) + +#define DRM_IOCTL_AMDXDNA_SYNC_BO \ + DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDXDNA_SYNC_BO, \ + struct amdxdna_drm_sync_bo) + #if defined(__cplusplus) } /* extern c end */ #endif -- 2.54.0