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| author | Jay Fenlason <fenlason@redhat.com> | 2009-03-05 21:08:40 +0300 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2009-03-24 22:56:49 +0300 |
| commit | f8c2287c65f8f72000102fc058232669e4540bc4 (patch) | |
| tree | a82393fbdd3a2b20f8e499537b10eb9e61dae941 /include/linux/firewire-cdev.h | |
| parent | ba27e1f7bf220799cd3d7503f82bda71b8ebe8c5 (diff) | |
| download | linux-f8c2287c65f8f72000102fc058232669e4540bc4.tar.xz | |
firewire: implement asynchronous stream transmission
Allow userspace and other firewire drivers (fw-ipv4 I'm looking at
you!) to send Asynchronous Transmit Streams as described in 7.8.3 of
release 1.1 of the 1394 Open Host Controller Interface Specification.
Signed-off-by: Jay Fenlason <fenlason@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (tweaks)
Diffstat (limited to 'include/linux/firewire-cdev.h')
| -rw-r--r-- | include/linux/firewire-cdev.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/firewire-cdev.h b/include/linux/firewire-cdev.h index 2e35379bf96c..4dfc84d0ac76 100644 --- a/include/linux/firewire-cdev.h +++ b/include/linux/firewire-cdev.h @@ -246,6 +246,7 @@ union fw_cdev_event { #define FW_CDEV_IOC_DEALLOCATE_ISO_RESOURCE_ONCE _IOW('#', 0x10, struct fw_cdev_allocate_iso_resource) #define FW_CDEV_IOC_GET_SPEED _IOR('#', 0x11, struct fw_cdev_get_speed) #define FW_CDEV_IOC_SEND_BROADCAST_REQUEST _IOW('#', 0x12, struct fw_cdev_send_request) +#define FW_CDEV_IOC_SEND_STREAM_PACKET _IOW('#', 0x13, struct fw_cdev_send_stream_packet) /* * FW_CDEV_VERSION History @@ -609,4 +610,30 @@ struct fw_cdev_get_speed { __u32 max_speed; }; +/** + * struct fw_cdev_send_stream_packet - send an asynchronous stream packet + * @generation: Bus generation where the packet is valid + * @speed: Speed code to send the packet at + * @channel: Channel to send the packet on + * @sy: Four-bit sy code for the packet + * @tag: Two-bit tag field to use for the packet + * @size: Size of the packet's data payload + * @data: Userspace pointer to the payload + * + * The %FW_CDEV_IOC_SEND_STREAM_PACKET ioctl sends an asynchronous stream packet + * to every device (that is listening to the specified channel) on the + * firewire bus. It is the applications's job to ensure + * that the intended device(s) will be able to receive the packet at the chosen + * transmit speed. + */ +struct fw_cdev_send_stream_packet { + __u32 generation; + __u32 speed; + __u32 channel; + __u32 sy; + __u32 tag; + __u32 size; + __u64 data; +}; + #endif /* _LINUX_FIREWIRE_CDEV_H */ |