linux/drivers/firewire
Stephan Gatzka a74477db91 firewire: net: Use posted writes
Change memory region to ohci "middle address space". This effectively
reduces the number of packets by 50%.

[Stefan R.:]  This eliminates 1394 ack packets and improved throughput
by a few percent in some tests with an S400a connection with and without
gap count optimization.  Since firewire-net taxes the AR-req DMA unit of
a FireWire controller much more than firewire-sbp2 (which uses the
middle address space with PCI posted writes too), this commit also
changes a related error printk into a ratelimited one as a precaution.

Side note:  The IPv4-over-1394 drivers of Mac OS X 10.4, Windows XP SP3,
and the Thesycon 1394 bus driver for Windows all use the middle address
space too.

Signed-off-by: Stephan Gatzka <stephan@gatzka.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2011-10-09 17:00:18 +02:00
..
core-card.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
core-cdev.c firewire: cdev: fix 32 bit userland on 64 bit kernel compat corner cases 2011-08-12 15:30:08 +02:00
core-device.c Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-08-21 18:13:19 -07:00
core-iso.c firewire: optimize iso queueing by setting wake only after the last packet 2011-05-10 22:53:45 +02:00
core-topology.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
core-transaction.c firewire: use clamp and min3 macros 2011-10-09 17:00:18 +02:00
core.h atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
init_ohci1394_dma.c ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-03-21 10:05:22 -07:00
Makefile ieee1394: move init_ohci1394_dma to drivers/firewire/ 2010-10-11 14:48:03 +02:00
net.c firewire: net: Use posted writes 2011-10-09 17:00:18 +02:00
nosy-user.h firewire: nosy: endianess fixes and annotations 2010-07-27 11:04:11 +02:00
nosy.c atomic: use <linux/atomic.h> 2011-07-26 16:49:47 -07:00
nosy.h firewire: nosy: misc cleanups 2010-07-27 11:04:10 +02:00
ohci.c firewire: net: Use posted writes 2011-10-09 17:00:18 +02:00
ohci.h firewire: ohci: fix TI TSB82AA2 regression since 2.6.35 2010-10-17 14:09:12 +02:00
sbp2.c firewire: use clamp and min3 macros 2011-10-09 17:00:18 +02:00