From: Jay Fenlason, Stefan Richter Date: Sun, 4 Jan 2009 15:23:29 +0000 (+0100) Subject: firewire: cdev: add ioctls for isochronous resource management X-Git-Tag: v2.6.30-rc1~644^2~32 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1bda4cdc2037447bd66753bf5ccab66d91b0b59;p=pandora-kernel.git firewire: cdev: add ioctls for isochronous resource management Based on Date: Tue, 18 Nov 2008 11:41:27 -0500 From: Jay Fenlason Subject: [Patch V4] Add ISO resource management support with several changes to the ABI and implementation. Only the part of the ABI which enables auto-reallocation and auto-deallocation is included here. This implements ioctls for kernel-assisted allocation of isochronous channels and isochronous bandwidth. The benefits are: - The client does not have to have write access to the /dev/fw* device corresponding to the IRM. - The client does not have to perform reallocation after bus resets. - Channel and bandwidth are deallocated by the kernel if the file is closed before the client deallocated the resources. Thus resources are released even if the client crashes. It is anticipated that future in-kernel code (firewire-core IRM code; the firewire port of firedtv), will use the fw-iso.c portions of this code too. Signed-off-by: Stefan Richter Tested-by: David Moore --- Reading git-diff-tree failed