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drm/tegra: Add upstream tegra-drm driver

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Add the upstream tegra-drm driver with the 'Host1x/Tegra UAPI' series
[0] applied. This driver will be built as an external module for testing
and development with upstream Linux kernels.

The following modifications have been made to the series posted upstream
1. Update the Makefile to always build the driver as a module
2. Always enable the tegra_drm_ioctl_xxx in the tegra_drm_ioctls and
   remove the dependency on CONFIG_DRM_TEGRA_STAGING.
3. Rename the include/uapi/drm/tegra_drm.h to
   include/uapi/drm/tegra_drm_next.h to avoid conflicts with upstream
   headers when building as an external module.
5. Rename the module that is built to be tegra-drm-next.ko instead of
   tegra-drm.ko to avoid any depmod conflicts with the upstream driver.

[0] https://patchwork.ozlabs.org/project/linux-tegra/list/?series=215770

Bug 3156385

Change-Id: I19206f989325c9c6ff3c2b9301d964140d52234f
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2435802
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Jon Hunter
2020-10-23 13:59:56 +01:00
committed by Laxman Dewangan
parent 46b9df5186
commit b8c2d943ed
44 changed files with 22291 additions and 0 deletions
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63
drivers/gpu/drm/tegra/uapi.h Normal file
View File

@@ -0,0 +1,63 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2020 NVIDIA Corporation */
#ifndef _TEGRA_DRM_UAPI_H
#define _TEGRA_DRM_UAPI_H
#include <linux/dma-mapping.h>
#include <linux/idr.h>
#include <linux/kref.h>
#include <linux/xarray.h>
#include <drm/drm.h>
struct drm_file;
struct drm_device;
struct tegra_drm_file {
/* Legacy UAPI state */
struct idr legacy_contexts;
struct mutex lock;
/* New UAPI state */
struct xarray contexts;
};
struct tegra_drm_channel_ctx {
struct tegra_drm_client *client;
struct host1x_channel *channel;
struct xarray mappings;
};
struct tegra_drm_mapping {
struct kref ref;
struct device *dev;
struct host1x_bo *bo;
struct sg_table *sgt;
enum dma_data_direction direction;
dma_addr_t iova;
dma_addr_t iova_end;
};
int tegra_drm_ioctl_channel_open(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_channel_close(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_channel_map(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_channel_unmap(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_channel_submit(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_gem_create(struct drm_device *drm, void *data,
struct drm_file *file);
int tegra_drm_ioctl_gem_mmap(struct drm_device *drm, void *data,
struct drm_file *file);
void tegra_drm_uapi_close_file(struct tegra_drm_file *file);
void tegra_drm_mapping_put(struct tegra_drm_mapping *mapping);
struct tegra_drm_channel_ctx *
tegra_drm_channel_ctx_lock(struct tegra_drm_file *file, u32 id);
#endif