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6134534ca2
Document the userspace ABI with kerneldoc to provide some information on how to use it. v3: - reword description of arrays and array lengths v2: - keep GEM object creation flags for ABI compatibility - fix typo in struct drm_tegra_syncpt_incr kerneldoc - fix typos in struct drm_tegra_submit kerneldoc - reworded some descriptions as suggested Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
682 lines
14 KiB
C
682 lines
14 KiB
C
/*
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* Copyright (c) 2012-2013, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _UAPI_TEGRA_DRM_H_
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#define _UAPI_TEGRA_DRM_H_
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#include "drm.h"
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#define DRM_TEGRA_GEM_CREATE_TILED (1 << 0)
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#define DRM_TEGRA_GEM_CREATE_BOTTOM_UP (1 << 1)
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/**
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* struct drm_tegra_gem_create - parameters for the GEM object creation IOCTL
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*/
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struct drm_tegra_gem_create {
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/**
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* @size:
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*
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* The size, in bytes, of the buffer object to be created.
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*/
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__u64 size;
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/**
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* @flags:
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*
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* A bitmask of flags that influence the creation of GEM objects:
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*
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* DRM_TEGRA_GEM_CREATE_TILED
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* Use the 16x16 tiling format for this buffer.
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*
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* DRM_TEGRA_GEM_CREATE_BOTTOM_UP
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* The buffer has a bottom-up layout.
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*/
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__u32 flags;
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/**
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* @handle:
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*
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* The handle of the created GEM object. Set by the kernel upon
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* successful completion of the IOCTL.
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*/
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__u32 handle;
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};
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/**
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* struct drm_tegra_gem_mmap - parameters for the GEM mmap IOCTL
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*/
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struct drm_tegra_gem_mmap {
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/**
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* @handle:
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*
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* Handle of the GEM object to obtain an mmap offset for.
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*/
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__u32 handle;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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/**
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* @offset:
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*
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* The mmap offset for the given GEM object. Set by the kernel upon
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* successful completion of the IOCTL.
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*/
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__u64 offset;
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};
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/**
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* struct drm_tegra_syncpt_read - parameters for the read syncpoint IOCTL
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*/
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struct drm_tegra_syncpt_read {
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/**
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* @id:
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*
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* ID of the syncpoint to read the current value from.
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*/
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__u32 id;
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/**
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* @value:
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*
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* The current syncpoint value. Set by the kernel upon successful
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* completion of the IOCTL.
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*/
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__u32 value;
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};
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/**
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* struct drm_tegra_syncpt_incr - parameters for the increment syncpoint IOCTL
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*/
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struct drm_tegra_syncpt_incr {
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/**
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* @id:
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*
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* ID of the syncpoint to increment.
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*/
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__u32 id;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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};
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/**
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* struct drm_tegra_syncpt_wait - parameters for the wait syncpoint IOCTL
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*/
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struct drm_tegra_syncpt_wait {
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/**
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* @id:
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*
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* ID of the syncpoint to wait on.
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*/
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__u32 id;
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/**
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* @thresh:
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*
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* Threshold value for which to wait.
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*/
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__u32 thresh;
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/**
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* @timeout:
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*
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* Timeout, in milliseconds, to wait.
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*/
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__u32 timeout;
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/**
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* @value:
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*
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* The new syncpoint value after the wait. Set by the kernel upon
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* successful completion of the IOCTL.
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*/
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__u32 value;
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};
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#define DRM_TEGRA_NO_TIMEOUT (0xffffffff)
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/**
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* struct drm_tegra_open_channel - parameters for the open channel IOCTL
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*/
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struct drm_tegra_open_channel {
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/**
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* @client:
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*
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* The client ID for this channel.
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*/
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__u32 client;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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/**
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* @context:
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*
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* The application context of this channel. Set by the kernel upon
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* successful completion of the IOCTL. This context needs to be passed
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* to the DRM_TEGRA_CHANNEL_CLOSE or the DRM_TEGRA_SUBMIT IOCTLs.
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*/
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__u64 context;
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};
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/**
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* struct drm_tegra_close_channel - parameters for the close channel IOCTL
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*/
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struct drm_tegra_close_channel {
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/**
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* @context:
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*
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* The application context of this channel. This is obtained from the
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* DRM_TEGRA_OPEN_CHANNEL IOCTL.
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*/
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__u64 context;
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};
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/**
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* struct drm_tegra_get_syncpt - parameters for the get syncpoint IOCTL
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*/
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struct drm_tegra_get_syncpt {
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/**
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* @context:
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*
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* The application context identifying the channel for which to obtain
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* the syncpoint ID.
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*/
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__u64 context;
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/**
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* @index:
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*
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* Index of the client syncpoint for which to obtain the ID.
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*/
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__u32 index;
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/**
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* @id:
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*
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* The ID of the given syncpoint. Set by the kernel upon successful
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* completion of the IOCTL.
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*/
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__u32 id;
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};
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/**
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* struct drm_tegra_get_syncpt_base - parameters for the get wait base IOCTL
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*/
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struct drm_tegra_get_syncpt_base {
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/**
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* @context:
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*
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* The application context identifying for which channel to obtain the
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* wait base.
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*/
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__u64 context;
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/**
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* @syncpt:
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*
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* ID of the syncpoint for which to obtain the wait base.
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*/
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__u32 syncpt;
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/**
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* @id:
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*
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* The ID of the wait base corresponding to the client syncpoint. Set
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* by the kernel upon successful completion of the IOCTL.
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*/
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__u32 id;
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};
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/**
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* struct drm_tegra_syncpt - syncpoint increment operation
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*/
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struct drm_tegra_syncpt {
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/**
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* @id:
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*
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* ID of the syncpoint to operate on.
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*/
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__u32 id;
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/**
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* @incrs:
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*
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* Number of increments to perform for the syncpoint.
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*/
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__u32 incrs;
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};
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/**
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* struct drm_tegra_cmdbuf - structure describing a command buffer
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*/
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struct drm_tegra_cmdbuf {
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/**
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* @handle:
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*
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* Handle to a GEM object containing the command buffer.
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*/
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__u32 handle;
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/**
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* @offset:
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*
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* Offset, in bytes, into the GEM object identified by @handle at
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* which the command buffer starts.
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*/
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__u32 offset;
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/**
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* @words:
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*
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* Number of 32-bit words in this command buffer.
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*/
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__u32 words;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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};
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/**
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* struct drm_tegra_reloc - GEM object relocation structure
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*/
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struct drm_tegra_reloc {
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struct {
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/**
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* @cmdbuf.handle:
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*
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* Handle to the GEM object containing the command buffer for
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* which to perform this GEM object relocation.
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*/
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__u32 handle;
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/**
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* @cmdbuf.offset:
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*
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* Offset, in bytes, into the command buffer at which to
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* insert the relocated address.
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*/
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__u32 offset;
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} cmdbuf;
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struct {
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/**
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* @target.handle:
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*
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* Handle to the GEM object to be relocated.
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*/
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__u32 handle;
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/**
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* @target.offset:
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*
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* Offset, in bytes, into the target GEM object at which the
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* relocated data starts.
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*/
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__u32 offset;
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} target;
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/**
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* @shift:
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*
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* The number of bits by which to shift relocated addresses.
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*/
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__u32 shift;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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};
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/**
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* struct drm_tegra_waitchk - wait check structure
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*/
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struct drm_tegra_waitchk {
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/**
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* @handle:
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*
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* Handle to the GEM object containing a command stream on which to
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* perform the wait check.
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*/
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__u32 handle;
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/**
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* @offset:
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*
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* Offset, in bytes, of the location in the command stream to perform
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* the wait check on.
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*/
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__u32 offset;
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/**
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* @syncpt:
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*
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* ID of the syncpoint to wait check.
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*/
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__u32 syncpt;
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/**
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* @thresh:
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*
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* Threshold value for which to check.
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*/
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__u32 thresh;
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};
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/**
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* struct drm_tegra_submit - job submission structure
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*/
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struct drm_tegra_submit {
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/**
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* @context:
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*
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* The application context identifying the channel to use for the
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* execution of this job.
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*/
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__u64 context;
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/**
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* @num_syncpts:
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*
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* The number of syncpoints operated on by this job. This defines the
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* length of the array pointed to by @syncpts.
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*/
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__u32 num_syncpts;
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/**
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* @num_cmdbufs:
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*
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* The number of command buffers to execute as part of this job. This
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* defines the length of the array pointed to by @cmdbufs.
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*/
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__u32 num_cmdbufs;
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/**
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* @num_relocs:
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*
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* The number of relocations to perform before executing this job.
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* This defines the length of the array pointed to by @relocs.
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*/
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__u32 num_relocs;
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/**
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* @num_waitchks:
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*
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* The number of wait checks to perform as part of this job. This
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* defines the length of the array pointed to by @waitchks.
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*/
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__u32 num_waitchks;
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/**
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* @waitchk_mask:
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*
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* Bitmask of valid wait checks.
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*/
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__u32 waitchk_mask;
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/**
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* @timeout:
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*
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* Timeout, in milliseconds, before this job is cancelled.
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*/
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__u32 timeout;
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/**
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* @syncpts:
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*
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* A pointer to an array of &struct drm_tegra_syncpt structures that
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* specify the syncpoint operations performed as part of this job.
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* The number of elements in the array must be equal to the value
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* given by @num_syncpts.
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*/
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__u64 syncpts;
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/**
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* @cmdbufs:
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*
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* A pointer to an array of &struct drm_tegra_cmdbuf structures that
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* define the command buffers to execute as part of this job. The
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* number of elements in the array must be equal to the value given
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* by @num_syncpts.
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*/
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__u64 cmdbufs;
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/**
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* @relocs:
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*
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* A pointer to an array of &struct drm_tegra_reloc structures that
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* specify the relocations that need to be performed before executing
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* this job. The number of elements in the array must be equal to the
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* value given by @num_relocs.
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*/
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__u64 relocs;
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/**
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* @waitchks:
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*
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* A pointer to an array of &struct drm_tegra_waitchk structures that
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* specify the wait checks to be performed while executing this job.
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* The number of elements in the array must be equal to the value
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* given by @num_waitchks.
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*/
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__u64 waitchks;
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/**
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* @fence:
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*
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* The threshold of the syncpoint associated with this job after it
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* has been completed. Set by the kernel upon successful completion of
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* the IOCTL. This can be used with the DRM_TEGRA_SYNCPT_WAIT IOCTL to
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* wait for this job to be finished.
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*/
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__u32 fence;
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/**
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* @reserved:
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*
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* This field is reserved for future use. Must be 0.
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*/
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__u32 reserved[5];
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};
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#define DRM_TEGRA_GEM_TILING_MODE_PITCH 0
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#define DRM_TEGRA_GEM_TILING_MODE_TILED 1
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#define DRM_TEGRA_GEM_TILING_MODE_BLOCK 2
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/**
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* struct drm_tegra_gem_set_tiling - parameters for the set tiling IOCTL
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*/
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struct drm_tegra_gem_set_tiling {
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/**
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* @handle:
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*
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* Handle to the GEM object for which to set the tiling parameters.
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*/
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__u32 handle;
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/**
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* @mode:
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*
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* The tiling mode to set. Must be one of:
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*
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* DRM_TEGRA_GEM_TILING_MODE_PITCH
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* pitch linear format
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*
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* DRM_TEGRA_GEM_TILING_MODE_TILED
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* 16x16 tiling format
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*
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* DRM_TEGRA_GEM_TILING_MODE_BLOCK
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* 16Bx2 tiling format
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*/
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__u32 mode;
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/**
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* @value:
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*
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* The value to set for the tiling mode parameter.
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*/
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__u32 value;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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};
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/**
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* struct drm_tegra_gem_get_tiling - parameters for the get tiling IOCTL
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*/
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struct drm_tegra_gem_get_tiling {
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/**
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* @handle:
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*
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* Handle to the GEM object for which to query the tiling parameters.
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*/
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__u32 handle;
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/**
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* @mode:
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*
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* The tiling mode currently associated with the GEM object. Set by
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* the kernel upon successful completion of the IOCTL.
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*/
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__u32 mode;
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/**
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* @value:
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*
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* The tiling mode parameter currently associated with the GEM object.
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* Set by the kernel upon successful completion of the IOCTL.
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*/
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__u32 value;
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/**
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* @pad:
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*
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* Structure padding that may be used in the future. Must be 0.
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*/
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__u32 pad;
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};
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#define DRM_TEGRA_GEM_BOTTOM_UP (1 << 0)
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#define DRM_TEGRA_GEM_FLAGS (DRM_TEGRA_GEM_BOTTOM_UP)
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/**
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* struct drm_tegra_gem_set_flags - parameters for the set flags IOCTL
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*/
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struct drm_tegra_gem_set_flags {
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/**
|
|
* @handle:
|
|
*
|
|
* Handle to the GEM object for which to set the flags.
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|
*/
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|
__u32 handle;
|
|
|
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/**
|
|
* @flags:
|
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*
|
|
* The flags to set for the GEM object.
|
|
*/
|
|
__u32 flags;
|
|
};
|
|
|
|
/**
|
|
* struct drm_tegra_gem_get_flags - parameters for the get flags IOCTL
|
|
*/
|
|
struct drm_tegra_gem_get_flags {
|
|
/**
|
|
* @handle:
|
|
*
|
|
* Handle to the GEM object for which to query the flags.
|
|
*/
|
|
__u32 handle;
|
|
|
|
/**
|
|
* @flags:
|
|
*
|
|
* The flags currently associated with the GEM object. Set by the
|
|
* kernel upon successful completion of the IOCTL.
|
|
*/
|
|
__u32 flags;
|
|
};
|
|
|
|
#define DRM_TEGRA_GEM_CREATE 0x00
|
|
#define DRM_TEGRA_GEM_MMAP 0x01
|
|
#define DRM_TEGRA_SYNCPT_READ 0x02
|
|
#define DRM_TEGRA_SYNCPT_INCR 0x03
|
|
#define DRM_TEGRA_SYNCPT_WAIT 0x04
|
|
#define DRM_TEGRA_OPEN_CHANNEL 0x05
|
|
#define DRM_TEGRA_CLOSE_CHANNEL 0x06
|
|
#define DRM_TEGRA_GET_SYNCPT 0x07
|
|
#define DRM_TEGRA_SUBMIT 0x08
|
|
#define DRM_TEGRA_GET_SYNCPT_BASE 0x09
|
|
#define DRM_TEGRA_GEM_SET_TILING 0x0a
|
|
#define DRM_TEGRA_GEM_GET_TILING 0x0b
|
|
#define DRM_TEGRA_GEM_SET_FLAGS 0x0c
|
|
#define DRM_TEGRA_GEM_GET_FLAGS 0x0d
|
|
|
|
#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
|
|
#define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
|
|
#define DRM_IOCTL_TEGRA_SYNCPT_READ DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_READ, struct drm_tegra_syncpt_read)
|
|
#define DRM_IOCTL_TEGRA_SYNCPT_INCR DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_INCR, struct drm_tegra_syncpt_incr)
|
|
#define DRM_IOCTL_TEGRA_SYNCPT_WAIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SYNCPT_WAIT, struct drm_tegra_syncpt_wait)
|
|
#define DRM_IOCTL_TEGRA_OPEN_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_OPEN_CHANNEL, struct drm_tegra_open_channel)
|
|
#define DRM_IOCTL_TEGRA_CLOSE_CHANNEL DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_CLOSE_CHANNEL, struct drm_tegra_close_channel)
|
|
#define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
|
|
#define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
|
|
#define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base)
|
|
#define DRM_IOCTL_TEGRA_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_TILING, struct drm_tegra_gem_set_tiling)
|
|
#define DRM_IOCTL_TEGRA_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_TILING, struct drm_tegra_gem_get_tiling)
|
|
#define DRM_IOCTL_TEGRA_GEM_SET_FLAGS DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_FLAGS, struct drm_tegra_gem_set_flags)
|
|
#define DRM_IOCTL_TEGRA_GEM_GET_FLAGS DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_FLAGS, struct drm_tegra_gem_get_flags)
|
|
|
|
#if defined(__cplusplus)
|
|
}
|
|
#endif
|
|
|
|
#endif
|