ethosu_accel.h

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/* SPDX-License-Identifier: MIT */
/* Copyright (C) 2025 Arm, Ltd. */
#ifndef _ETHOSU_DRM_H_
#define _ETHOSU_DRM_H_
 
#include "drm.h"
 
#if defined(__cplusplus)
extern "C" {
#endif
 
enum drm_ethosu_ioctl_id {
    DRM_ETHOSU_DEV_QUERY = 0,
 
    DRM_ETHOSU_BO_CREATE,
 
    DRM_ETHOSU_BO_WAIT,
 
    DRM_ETHOSU_BO_MMAP_OFFSET,
 
    DRM_ETHOSU_CMDSTREAM_BO_CREATE,
 
    DRM_ETHOSU_SUBMIT,
};
 
enum drm_ethosu_dev_query_type {
    DRM_ETHOSU_DEV_QUERY_NPU_INFO = 0,
};
 
struct drm_ethosu_npu_info {
    __u32 id;
#define DRM_ETHOSU_ARCH_MAJOR(x)            ((x) >> 28)
#define DRM_ETHOSU_ARCH_MINOR(x)            (((x) >> 20) & 0xff)
#define DRM_ETHOSU_ARCH_PATCH(x)            (((x) >> 16) & 0xf)
#define DRM_ETHOSU_PRODUCT_MAJOR(x)     (((x) >> 12) & 0xf)
#define DRM_ETHOSU_VERSION_MAJOR(x)     (((x) >> 8) & 0xf)
#define DRM_ETHOSU_VERSION_MINOR(x)     (((x) >> 4) & 0xff)
#define DRM_ETHOSU_VERSION_STATUS(x)        ((x) & 0xf)
 
    __u32 config;
 
    __u32 sram_size;
};
 
struct drm_ethosu_dev_query {
    __u32 type;
 
    __u32 size;
 
    __u64 pointer;
};
 
enum drm_ethosu_bo_flags {
    DRM_ETHOSU_BO_NO_MMAP = (1 << 0),
};
 
struct drm_ethosu_bo_create {
    __u64 size;
 
    __u32 flags;
 
    __u32 handle;
};
 
struct drm_ethosu_bo_mmap_offset {
    __u32 handle;
 
    __u32 pad;
 
    __u64 offset;
};
 
struct drm_ethosu_bo_wait {
    __u32 handle;
    __u32 pad;
    __s64 timeout_ns;   /* absolute */
};
 
struct drm_ethosu_cmdstream_bo_create {
    /* Size of the data argument. */
    __u32 size;
 
    /* Flags, currently must be 0. */
    __u32 flags;
 
    /* Pointer to the data. */
    __u64 data;
 
    __u32 handle;
 
    /* Pad, must be 0. */
    __u32 pad;
};
 
struct drm_ethosu_job {
    __u32 cmd_bo;
 
    __u32 sram_size;
 
#define ETHOSU_MAX_REGIONS  8
    __u32 region_bo_handles[ETHOSU_MAX_REGIONS];
};
 
struct drm_ethosu_submit {
    __u64 jobs;
 
    __u32 job_count;
 
    __u32 pad;
};
 
#define DRM_IOCTL_ETHOSU(__access, __id, __type) \
    DRM_IO ## __access(DRM_COMMAND_BASE + DRM_ETHOSU_ ## __id, \
               struct drm_ethosu_ ## __type)
 
enum {
    DRM_IOCTL_ETHOSU_DEV_QUERY =
        DRM_IOCTL_ETHOSU(WR, DEV_QUERY, dev_query),
    DRM_IOCTL_ETHOSU_BO_CREATE =
        DRM_IOCTL_ETHOSU(WR, BO_CREATE, bo_create),
    DRM_IOCTL_ETHOSU_BO_WAIT =
        DRM_IOCTL_ETHOSU(WR, BO_WAIT, bo_wait),
    DRM_IOCTL_ETHOSU_BO_MMAP_OFFSET =
        DRM_IOCTL_ETHOSU(WR, BO_MMAP_OFFSET, bo_mmap_offset),
    DRM_IOCTL_ETHOSU_CMDSTREAM_BO_CREATE =
        DRM_IOCTL_ETHOSU(WR, CMDSTREAM_BO_CREATE, cmdstream_bo_create),
    DRM_IOCTL_ETHOSU_SUBMIT =
        DRM_IOCTL_ETHOSU(WR, SUBMIT, submit),
};
 
#if defined(__cplusplus)
}
#endif
 
#endif /* _ETHOSU_DRM_H_ */