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weston/libweston/linux-sync-file-uapi.h

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libweston: Add check and fallback for linux/sync_file.h The sync file functionality is required by the upcoming GPU render timeline work, but it's only available in relatively new linux kernel versions (4.7 and above). This commit provides a "sanitized" version of the required sync file definitions. On systems that don't have the sync file header (due to having an older kernel), we will be able to fall back to our own definitions when building. Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
7 years ago
/* Sync file Linux kernel UAPI */
libweston: Introduce an internal linux sync file API Introduce an internal API for dealing with linux sync files, and use it in the codebase to replace ad-hoc sync file management. The linux_sync_file_is_valid function is not currently used, but will be utilized in upcoming commits to implement the zwp_linux_explicit_synchronization_unstable_v1 protocol. Changes in v5: - Meson support. Changes in v3: - Use parameter name in function documentation. - Move kernel UAPI to separate header file. Changes in v2: - Add function documentation - Remove linux_sync_file_wait() Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
6 years ago
#ifndef WESTON_LINUX_SYNC_FILE_UAPI_H
#define WESTON_LINUX_SYNC_FILE_UAPI_H
libweston: Add check and fallback for linux/sync_file.h The sync file functionality is required by the upcoming GPU render timeline work, but it's only available in relatively new linux kernel versions (4.7 and above). This commit provides a "sanitized" version of the required sync file definitions. On systems that don't have the sync file header (due to having an older kernel), we will be able to fall back to our own definitions when building. Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com> Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
7 years ago
#include <linux/ioctl.h>
#include <linux/types.h>
struct sync_fence_info {
char obj_name[32];
char driver_name[32];
__s32 status;
__u32 flags;
__u64 timestamp_ns;
};
struct sync_file_info {
char name[32];
__s32 status;
__u32 flags;
__u32 num_fences;
__u32 pad;
__u64 sync_fence_info;
};
#define SYNC_IOC_MAGIC '>'
#define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info)
libweston: Introduce an internal linux sync file API Introduce an internal API for dealing with linux sync files, and use it in the codebase to replace ad-hoc sync file management. The linux_sync_file_is_valid function is not currently used, but will be utilized in upcoming commits to implement the zwp_linux_explicit_synchronization_unstable_v1 protocol. Changes in v5: - Meson support. Changes in v3: - Use parameter name in function documentation. - Move kernel UAPI to separate header file. Changes in v2: - Add function documentation - Remove linux_sync_file_wait() Signed-off-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
6 years ago
#endif /* WESTON_LINUX_SYNC_FILE_UAPI_H */