drivers/gpu/drm/tegra/uapi.h

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/tegra/uapi.h

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/tegra/uapi.h
Extension
.h
Size
1572 bytes
Lines
58
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct tegra_drm_file {
	/* Legacy UAPI state */
	struct idr legacy_contexts;
	struct mutex lock;

	/* New UAPI state */
	struct xarray contexts;
	struct xarray syncpoints;
};

struct tegra_drm_mapping {
	struct kref ref;

	struct host1x_bo_mapping *map;
	struct host1x_bo *bo;

	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_syncpoint_allocate(struct drm_device *drm, void *data,
				       struct drm_file *file);
int tegra_drm_ioctl_syncpoint_free(struct drm_device *drm, void *data,
				   struct drm_file *file);
int tegra_drm_ioctl_syncpoint_wait(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);

#endif

Annotation

Implementation Notes