forked from luck/tmp_suning_uos_patched
3dc5ea9b31
This implements the simultaneous read of the isochronous cycle timer and the system clock (in usecs). This allows to express the exact receive time of an ISO packet as a system time with microsecond accuracy. http://bugzilla.kernel.org/show_bug.cgi?id=7773 The counterpart patch for libraw1394 can be found at http://thread.gmane.org/gmane.linux.kernel.firewire.devel/8934 Patch update (Stefan R.): Disable preemption and local interrupts. Prevent integer overflow. Add paranoid error checks and kerneldoc to hpsb_read_cycle_timer. Move it to other ieee1394_core high-level API functions. Change comments. Adjust whitespace. Rename struct _raw1394_cycle_timer. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Acked-by: Pieter Palmers <pieterp@joow.be> Acked-by: Dan Dennedy <dan@dennedy.org>
107 lines
3.6 KiB
C
107 lines
3.6 KiB
C
/*
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* Base file for all ieee1394 ioctl's.
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* Linux-1394 has allocated base '#' with a range of 0x00-0x3f.
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*/
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#ifndef __IEEE1394_IOCTL_H
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#define __IEEE1394_IOCTL_H
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/* DV1394 Gets 10 */
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/* Get the driver ready to transmit video. pass a struct dv1394_init* as
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* the parameter (see below), or NULL to get default parameters */
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#define DV1394_IOC_INIT _IOW('#', 0x06, struct dv1394_init)
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/* Stop transmitting video and free the ringbuffer */
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#define DV1394_IOC_SHUTDOWN _IO ('#', 0x07)
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/* Submit N new frames to be transmitted, where the index of the first new
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* frame is first_clear_buffer, and the index of the last new frame is
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* (first_clear_buffer + N) % n_frames */
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#define DV1394_IOC_SUBMIT_FRAMES _IO ('#', 0x08)
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/* Block until N buffers are clear (pass N as the parameter) Because we
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* re-transmit the last frame on underrun, there will at most be n_frames
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* - 1 clear frames at any time */
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#define DV1394_IOC_WAIT_FRAMES _IO ('#', 0x09)
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/* Capture new frames that have been received, where the index of the
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* first new frame is first_clear_buffer, and the index of the last new
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* frame is (first_clear_buffer + N) % n_frames */
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#define DV1394_IOC_RECEIVE_FRAMES _IO ('#', 0x0a)
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/* Tell card to start receiving DMA */
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#define DV1394_IOC_START_RECEIVE _IO ('#', 0x0b)
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/* Pass a struct dv1394_status* as the parameter */
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#define DV1394_IOC_GET_STATUS _IOR('#', 0x0c, struct dv1394_status)
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/* Video1394 Gets 10 */
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#define VIDEO1394_IOC_LISTEN_CHANNEL \
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_IOWR('#', 0x10, struct video1394_mmap)
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#define VIDEO1394_IOC_UNLISTEN_CHANNEL \
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_IOW ('#', 0x11, int)
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#define VIDEO1394_IOC_LISTEN_QUEUE_BUFFER \
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_IOW ('#', 0x12, struct video1394_wait)
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#define VIDEO1394_IOC_LISTEN_WAIT_BUFFER \
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_IOWR('#', 0x13, struct video1394_wait)
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#define VIDEO1394_IOC_TALK_CHANNEL \
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_IOWR('#', 0x14, struct video1394_mmap)
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#define VIDEO1394_IOC_UNTALK_CHANNEL \
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_IOW ('#', 0x15, int)
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/*
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* This one is broken: it really wanted
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* "sizeof (struct video1394_wait) + sizeof (struct video1394_queue_variable)"
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* but got just a "size_t"
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*/
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#define VIDEO1394_IOC_TALK_QUEUE_BUFFER \
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_IOW ('#', 0x16, size_t)
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#define VIDEO1394_IOC_TALK_WAIT_BUFFER \
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_IOW ('#', 0x17, struct video1394_wait)
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#define VIDEO1394_IOC_LISTEN_POLL_BUFFER \
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_IOWR('#', 0x18, struct video1394_wait)
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/* Raw1394's ISO interface */
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#define RAW1394_IOC_ISO_XMIT_INIT \
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_IOW ('#', 0x1a, struct raw1394_iso_status)
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#define RAW1394_IOC_ISO_RECV_INIT \
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_IOWR('#', 0x1b, struct raw1394_iso_status)
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#define RAW1394_IOC_ISO_RECV_START \
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_IOC (_IOC_WRITE, '#', 0x1c, sizeof(int) * 3)
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#define RAW1394_IOC_ISO_XMIT_START \
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_IOC (_IOC_WRITE, '#', 0x1d, sizeof(int) * 2)
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#define RAW1394_IOC_ISO_XMIT_RECV_STOP \
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_IO ('#', 0x1e)
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#define RAW1394_IOC_ISO_GET_STATUS \
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_IOR ('#', 0x1f, struct raw1394_iso_status)
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#define RAW1394_IOC_ISO_SHUTDOWN \
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_IO ('#', 0x20)
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#define RAW1394_IOC_ISO_QUEUE_ACTIVITY \
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_IO ('#', 0x21)
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#define RAW1394_IOC_ISO_RECV_LISTEN_CHANNEL \
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_IOW ('#', 0x22, unsigned char)
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#define RAW1394_IOC_ISO_RECV_UNLISTEN_CHANNEL \
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_IOW ('#', 0x23, unsigned char)
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#define RAW1394_IOC_ISO_RECV_SET_CHANNEL_MASK \
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_IOW ('#', 0x24, __u64)
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#define RAW1394_IOC_ISO_RECV_PACKETS \
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_IOW ('#', 0x25, struct raw1394_iso_packets)
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#define RAW1394_IOC_ISO_RECV_RELEASE_PACKETS \
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_IOW ('#', 0x26, unsigned int)
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#define RAW1394_IOC_ISO_XMIT_PACKETS \
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_IOW ('#', 0x27, struct raw1394_iso_packets)
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#define RAW1394_IOC_ISO_XMIT_SYNC \
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_IO ('#', 0x28)
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#define RAW1394_IOC_ISO_RECV_FLUSH \
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_IO ('#', 0x29)
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#define RAW1394_IOC_GET_CYCLE_TIMER \
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_IOR ('#', 0x30, struct raw1394_cycle_timer)
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#endif /* __IEEE1394_IOCTL_H */
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