From bd72d4acda1069579b35123e3cc0b21ec1193a21 Mon Sep 17 00:00:00 2001 From: Lizhi Hou Date: Wed, 16 Jul 2025 09:44:14 -0700 Subject: [PATCH 4487/5403] accel/amdxdna: Support user space allocated buffer Enhance DRM_IOCTL_AMDXDNA_CREATE_BO to accept user space allocated buffer pointer. The buffer pages will be pinned in memory. Unless the CAP_IPC_LOCK is enabled for the application process, the total pinned memory can not beyond rlimit_memlock. Reviewed-by: Jacek Lawrynowicz Signed-off-by: Lizhi Hou Link: https://lore.kernel.org/r/20250716164414.112091-1-lizhi.hou@amd.com --- include/uapi/drm/amdxdna_accel.h | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/uapi/drm/amdxdna_accel.h b/include/uapi/drm/amdxdna_accel.h index a706ead39082..ce523e9ccc52 100644 --- a/include/uapi/drm/amdxdna_accel.h +++ b/include/uapi/drm/amdxdna_accel.h @@ -153,6 +153,31 @@ enum amdxdna_bo_type { AMDXDNA_BO_CMD, }; +/** + * struct amdxdna_drm_va_entry + * @vaddr: Virtual address. + * @len: Size of entry. + */ +struct amdxdna_drm_va_entry { + __u64 vaddr; + __u64 len; +}; + +/** + * struct amdxdna_drm_va_tbl + * @dmabuf_fd: The fd of dmabuf. + * @num_entries: Number of va entries. + * @va_entries: Array of va entries. + * + * The input can be either a dmabuf fd or a virtual address entry table. + * When dmabuf_fd is used, num_entries must be zero. + */ +struct amdxdna_drm_va_tbl { + __s32 dmabuf_fd; + __u32 num_entries; + struct amdxdna_drm_va_entry va_entries[]; +}; + /** * struct amdxdna_drm_create_bo - Create a buffer object. * @flags: Buffer flags. MBZ. -- 2.54.0