From: Mikko Perttunen mperttunen@nvidia.com
Implement TegraDRM IOCTLs for allocating and freeing syncpoints.
Signed-off-by: Mikko Perttunen mperttunen@nvidia.com Signed-off-by: Thierry Reding treding@nvidia.com --- drivers/gpu/drm/tegra/drm.c | 5 ++++ drivers/gpu/drm/tegra/uapi.c | 52 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/tegra/uapi.h | 5 ++++ 3 files changed, 62 insertions(+)
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index 6ee08e49ec57..18aee825a1ff 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -92,6 +92,7 @@ static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
idr_init_base(&fpriv->legacy_contexts, 1); xa_init_flags(&fpriv->contexts, XA_FLAGS_ALLOC1); + xa_init(&fpriv->syncpoints); mutex_init(&fpriv->lock); filp->driver_priv = fpriv;
@@ -727,6 +728,10 @@ static const struct drm_ioctl_desc tegra_drm_ioctls[] = { DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(TEGRA_CHANNEL_UNMAP, tegra_drm_ioctl_channel_unmap, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(TEGRA_SYNCPOINT_ALLOCATE, tegra_drm_ioctl_syncpoint_allocate, + DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(TEGRA_SYNCPOINT_FREE, tegra_drm_ioctl_syncpoint_free, + DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap, DRM_RENDER_ALLOW), diff --git a/drivers/gpu/drm/tegra/uapi.c b/drivers/gpu/drm/tegra/uapi.c index 48e872c768a9..e91394e7264e 100644 --- a/drivers/gpu/drm/tegra/uapi.c +++ b/drivers/gpu/drm/tegra/uapi.c @@ -49,12 +49,17 @@ static void tegra_drm_channel_context_close(struct tegra_drm_context *context) void tegra_drm_uapi_close_file(struct tegra_drm_file *file) { struct tegra_drm_context *context; + struct host1x_syncpt *sp; unsigned long id;
xa_for_each(&file->contexts, id, context) tegra_drm_channel_context_close(context);
+ xa_for_each(&file->syncpoints, id, sp) + host1x_syncpt_put(sp); + xa_destroy(&file->contexts); + xa_destroy(&file->syncpoints); }
static struct tegra_drm_client *tegra_drm_find_client(struct tegra_drm *tegra, @@ -311,3 +316,50 @@ int tegra_drm_ioctl_gem_mmap(struct drm_device *drm, void *data,
return 0; } + +int tegra_drm_ioctl_syncpoint_allocate(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct host1x *host1x = tegra_drm_to_host1x(drm->dev_private); + struct tegra_drm_file *fpriv = file->driver_priv; + struct drm_tegra_syncpoint_allocate *args = data; + struct host1x_syncpt *sp; + int err; + + if (args->id) + return -EINVAL; + + sp = host1x_syncpt_alloc(host1x, HOST1X_SYNCPT_CLIENT_MANAGED, + current->comm); + if (!sp) + return -EBUSY; + + args->id = host1x_syncpt_id(sp); + + err = xa_insert(&fpriv->syncpoints, args->id, sp, GFP_KERNEL); + if (err) { + host1x_syncpt_put(sp); + return err; + } + + return 0; +} + +int tegra_drm_ioctl_syncpoint_free(struct drm_device *drm, void *data, + struct drm_file *file) +{ + struct tegra_drm_file *fpriv = file->driver_priv; + struct drm_tegra_syncpoint_allocate *args = data; + struct host1x_syncpt *sp; + + mutex_lock(&fpriv->lock); + sp = xa_erase(&fpriv->syncpoints, args->id); + mutex_unlock(&fpriv->lock); + + if (!sp) + return -EINVAL; + + host1x_syncpt_put(sp); + + return 0; +} diff --git a/drivers/gpu/drm/tegra/uapi.h b/drivers/gpu/drm/tegra/uapi.h index fbef39726c29..e4e498facf61 100644 --- a/drivers/gpu/drm/tegra/uapi.h +++ b/drivers/gpu/drm/tegra/uapi.h @@ -21,6 +21,7 @@ struct tegra_drm_file {
/* New UAPI state */ struct xarray contexts; + struct xarray syncpoints; };
struct tegra_drm_mapping { @@ -44,6 +45,10 @@ 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);
void tegra_drm_uapi_close_file(struct tegra_drm_file *file); void tegra_drm_mapping_put(struct tegra_drm_mapping *mapping);