diff options
Diffstat (limited to 'gxp.h')
| -rw-r--r-- | gxp.h | 84 |
1 files changed, 84 insertions, 0 deletions
@@ -932,4 +932,88 @@ struct gxp_mailbox_uci_response_ioctl { #define GXP_MAILBOX_UCI_RESPONSE \ _IOR(GXP_IOCTL_BASE, 31, struct gxp_mailbox_uci_response_ioctl) +/* + * struct gxp_create_sync_fence_data + * @seqno: the seqno to initialize the fence with + * @timeline_name: the name of the timeline the fence belongs to + * @fence: returns the fd of the new sync_file with the new fence + * + * Timeline names can be up to 128 characters (including trailing NUL byte) + * for gxp debugfs and kernel debug logs. These names are truncated to 32 + * characters in the data returned by the standard SYNC_IOC_FILE_INFO + * ioctl. + */ +#define GXP_SYNC_TIMELINE_NAME_LEN 128 +struct gxp_create_sync_fence_data { + __u32 seqno; + char timeline_name[GXP_SYNC_TIMELINE_NAME_LEN]; + __s32 fence; +}; + +/* + * Create a DMA sync fence, return the sync_file fd for the new fence. + * + * The client must have allocated a virtual device. + */ +#define GXP_CREATE_SYNC_FENCE \ + _IOWR(GXP_IOCTL_BASE, 32, struct gxp_create_sync_fence_data) + +/* + * struct gxp_signal_sync_fence_data + * @fence: fd of the sync_file for the fence + * @error: error status errno value or zero for success + */ +struct gxp_signal_sync_fence_data { + __s32 fence; + __s32 error; +}; + +/* + * Signal a DMA sync fence with optional error status. + * Can pass a sync_file fd created by any driver. + * Signals the first DMA sync fence in the sync file. + */ +#define GXP_SIGNAL_SYNC_FENCE \ + _IOW(GXP_IOCTL_BASE, 33, struct gxp_signal_sync_fence_data) + +/* + * struct gxp_sync_fence_status + * @fence: fd of the sync_file for the fence + * @status: returns: + * 0 if active + * 1 if signaled with no error + * negative errno value if signaled with error + */ +struct gxp_sync_fence_status { + __s32 fence; + __s32 status; +}; + +/* + * Retrieve DMA sync fence status. + * Can pass a sync_file fd created by any driver. + * Returns the status of the first DMA sync fence in the sync file. + */ +#define GXP_SYNC_FENCE_STATUS \ + _IOWR(GXP_IOCTL_BASE, 34, struct gxp_sync_fence_status) + +/* + * struct gxp_register_invalidated_eventfd_ioctl + * @eventfd: File-descriptor obtained via eventfd(). + * Not used during the unregister step. + */ +struct gxp_register_invalidated_eventfd_ioctl { + __u32 eventfd; +}; + +/* + * Registers an eventfd which will be triggered when the device crashes and + * the virtual device of the client is invalidated. + */ +#define GXP_REGISTER_INVALIDATED_EVENTFD \ + _IOW(GXP_IOCTL_BASE, 35, struct gxp_register_invalidated_eventfd_ioctl) + +#define GXP_UNREGISTER_INVALIDATED_EVENTFD \ + _IOW(GXP_IOCTL_BASE, 36, struct gxp_register_invalidated_eventfd_ioctl) + #endif /* __GXP_H__ */ |