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tegra: Add flink helpers 

Add helpers to export and import buffer objects via flink names.

Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
main
Thierry Reding 2018-04-23 11:00:56 +02:00
parent 1842707183
commit f7a77f6993
3 changed files with 55 additions and 0 deletions
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2
tegra/tegra-symbols.txt
View File

@ -1,6 +1,8 @@
drm_tegra_bo_get_handle
drm_tegra_bo_get_name
drm_tegra_bo_map
drm_tegra_bo_new
drm_tegra_bo_open
drm_tegra_bo_ref
drm_tegra_bo_unmap
drm_tegra_bo_unref

50
tegra/tegra.c
View File

@ -240,3 +240,53 @@ drm_public int drm_tegra_bo_unmap(struct drm_tegra_bo *bo)
return 0;
}
drm_public int drm_tegra_bo_get_name(struct drm_tegra_bo *bo, uint32_t *name)
{
struct drm_tegra *drm = bo->drm;
struct drm_gem_flink args;
int err;
memset(&args, 0, sizeof(args));
args.handle = bo->handle;
err = drmIoctl(drm->fd, DRM_IOCTL_GEM_FLINK, &args);
if (err < 0)
return err;
if (name)
*name = args.name;
return 0;
}
drm_public int
drm_tegra_bo_open(struct drm_tegra *drm, uint32_t name, uint32_t flags,
struct drm_tegra_bo **bop)
{
struct drm_gem_open args;
struct drm_tegra_bo *bo;
int err;
bo = drm_tegra_bo_alloc(drm, 0, flags, 0);
if (!bo)
return -ENOMEM;
memset(&args, 0, sizeof(args));
args.name = name;
err = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &args);
if (err < 0)
goto free;
bo->handle = args.handle;
bo->size = args.size;
*bop = bo;
return 0;
free:
free(bo);
return err;
}

3
tegra/tegra.h
View File

@ -44,5 +44,8 @@ int drm_tegra_bo_get_handle(struct drm_tegra_bo *bo, uint32_t *handle);
int drm_tegra_bo_map(struct drm_tegra_bo *bo, void **ptr);
int drm_tegra_bo_unmap(struct drm_tegra_bo *bo);
int drm_tegra_bo_get_name(struct drm_tegra_bo *bo, uint32_t *name);
int drm_tegra_bo_open(struct drm_tegra *drm, uint32_t name, uint32_t flags,
struct drm_tegra_bo **bop);
#endif /* __DRM_TEGRA_H__ */