The NVIDIA Deep Learning Accelerator (NVDLA) is an open source IP which is integrated into NVIDIA Jetson AGX Xavier, so add UAPI of this driver.
Signed-off-by: Cai Huoqing cai.huoqing@linux.dev --- v1->v2: *Rename nvdla_drm.[ch] to nvdla_drv.[ch] and rename nvdla_ioctl.h to nvdla_drm.h, move it to uapi. comments link: https://lore.kernel.org/lkml/20bac605-97e6-e5cd-c4e4-83a8121645d8@amd.com/
include/uapi/drm/nvdla_drm.h | 99 ++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 include/uapi/drm/nvdla_drm.h
diff --git a/include/uapi/drm/nvdla_drm.h b/include/uapi/drm/nvdla_drm.h new file mode 100644 index 000000000000..984635285525 --- /dev/null +++ b/include/uapi/drm/nvdla_drm.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ +/* + * Copyright (C) 2017-2018 NVIDIA CORPORATION. + * Copyright (C) 2022 Cai Huoqing + */ + +#ifndef __LINUX_NVDLA_IOCTL_H +#define __LINUX_NVDLA_IOCTL_H + +#include <linux/ioctl.h> +#include <linux/types.h> + +#if !defined(__KERNEL__) +#define __user +#endif + +/** + * struct nvdla_mem_handle structure for memory handles + * + * @handle handle to DMA buffer allocated in userspace + * @reserved Reserved for padding + * @offset offset in bytes from start address of buffer + * + */ +struct nvdla_mem_handle { + __u32 handle; + __u32 reserved; + __u64 offset; +}; + +/** + * struct nvdla_ioctl_submit_task structure for single task information + * + * @num_addresses total number of entries in address_list + * @reserved Reserved for padding + * @address_list pointer to array of struct nvdla_mem_handle + * + */ +struct nvdla_ioctl_submit_task { +#define NVDLA_MAX_BUFFERS_PER_TASK (6144) + __u32 num_addresses; +#define NVDLA_NO_TIMEOUT (0xffffffff) + __u32 timeout; + __u64 address_list; +}; + +/** + * struct nvdla_submit_args structure for task submit + * + * @tasks pointer to array of struct nvdla_ioctl_submit_task + * @num_tasks number of entries in tasks + * @flags flags for task submit, no flags defined yet + * @version version of task structure + * + */ +struct nvdla_submit_args { + __u64 tasks; + __u16 num_tasks; +#define NVDLA_MAX_TASKS_PER_SUBMIT 24 +#define NVDLA_SUBMIT_FLAGS_ATOMIC (1 << 0) + __u16 flags; + __u32 version; +}; + +/** + * struct nvdla_gem_create_args for allocating DMA buffer through GEM + * + * @handle handle updated by kernel after allocation + * @flags implementation specific flags + * @size size of buffer to allocate + */ +struct nvdla_gem_create_args { + __u32 handle; + __u32 flags; + __u64 size; +}; + +/** + * struct nvdla_gem_map_offset_args for mapping DMA buffer + * + * @handle handle of the buffer + * @reserved reserved for padding + * @offset offset updated by kernel after mapping + */ +struct nvdla_gem_map_offset_args { + __u32 handle; + __u32 reserved; + __u64 offset; +}; + +#define DRM_NVDLA_SUBMIT 0x00 +#define DRM_NVDLA_GEM_CREATE 0x01 +#define DRM_NVDLA_GEM_MMAP 0x02 + +#define DRM_IOCTL_NVDLA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_NVDLA_SUBMIT, struct nvdla_submit_args) +#define DRM_IOCTL_NVDLA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_NVDLA_GEM_CREATE, struct nvdla_gem_create_args) +#define DRM_IOCTL_NVDLA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_NVDLA_GEM_MMAP, struct nvdla_gem_map_offset_args) + +#endif