Add blob property create/destroy ioctl wrappers
v2: Use memclear to zero out structure. Signed-off-by: Daniel Stone <daniels@collabora.com> Reviewed-by: Rob Clark <robclark@freedesktop.org>main
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ed44e0b958
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32471b265c
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@ -766,6 +766,8 @@ struct drm_prime_handle {
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#define DRM_IOCTL_MODE_OBJ_SETPROPERTY DRM_IOWR(0xBA, struct drm_mode_obj_set_property)
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#define DRM_IOCTL_MODE_CURSOR2 DRM_IOWR(0xBB, struct drm_mode_cursor2)
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#define DRM_IOCTL_MODE_ATOMIC DRM_IOWR(0xBC, struct drm_mode_atomic)
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#define DRM_IOCTL_MODE_CREATEPROPBLOB DRM_IOWR(0xBD, struct drm_mode_create_blob)
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#define DRM_IOCTL_MODE_DESTROYPROPBLOB DRM_IOWR(0xBE, struct drm_mode_destroy_blob)
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/**
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* Device specific ioctls should only be in their respective headers
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@ -523,4 +523,25 @@ struct drm_mode_atomic {
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__u64 user_data;
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};
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/**
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* Create a new 'blob' data property, copying length bytes from data pointer,
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* and returning new blob ID.
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*/
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struct drm_mode_create_blob {
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/** Pointer to data to copy. */
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__u64 data;
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/** Length of data to copy. */
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__u32 length;
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/** Return: new property ID. */
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__u32 blob_id;
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};
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/**
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* Destroy a user-created blob property.
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*/
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struct drm_mode_destroy_blob {
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__u32 blob_id;
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};
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#endif
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@ -1387,3 +1387,37 @@ out:
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return ret;
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}
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int
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drmModeCreatePropertyBlob(int fd, const void *data, size_t length, uint32_t *id)
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{
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struct drm_mode_create_blob create;
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int ret;
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if (length >= 0xffffffff)
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return -ERANGE;
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memclear(create);
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create.length = length;
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create.data = (uintptr_t) data;
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create.blob_id = 0;
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*id = 0;
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ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create);
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if (ret != 0)
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return ret;
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*id = create.blob_id;
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return 0;
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}
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int
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drmModeDestroyPropertyBlob(int fd, uint32_t id)
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{
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struct drm_mode_destroy_blob destroy;
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memclear(destroy);
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destroy.blob_id = id;
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return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
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}
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@ -503,6 +503,11 @@ extern int drmModeAtomicCommit(int fd,
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uint32_t flags,
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void *user_data);
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extern int drmModeCreatePropertyBlob(int fd, const void *data, size_t size,
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uint32_t *id);
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extern int drmModeDestroyPropertyBlob(int fd, uint32_t id);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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