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Ben Hutchings 65f0b417de sfc: Use write-combining to reduce TX latency 
Based on work by Neil Turton <nturton@solarflare.com> and
Kieran Mansley <kmansley@solarflare.com>.

The BIU has now been verified to handle 3- and 4-dword writes within a
single 128-bit register correctly.  This means we can enable write-
combining and only insert write barriers between writes to distinct
registers.

This has been observed to save about 0.5 us when pushing a TX
descriptor to an empty TX queue.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2011-03-04 17:58:42 +00:00
..
bitfield.h
sfc: Update version, copyright dates, authors
2009-11-29 17:23:58 -08:00
efx.c
sfc: Use write-combining to reduce TX latency
2011-03-04 17:58:42 +00:00
efx.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
enum.h
sfc: Update version, copyright dates, authors
2009-11-29 17:23:58 -08:00
ethtool.c
sfc: Expose TX push and TSO counters through ethtool statistics
2011-02-28 23:57:24 +00:00
falcon_boards.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
falcon_xmac.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
falcon.c
sfc: Remove configurable FIFO thresholds for pause frame generation
2011-02-28 23:57:24 +00:00
filter.c
sfc: Implement hardware acceleration of RFS
2011-02-17 21:00:33 +00:00
filter.h
sfc: Generalise filter spec initialisation
2010-12-07 19:11:26 +00:00
io.h
sfc: Use write-combining to reduce TX latency
2011-03-04 17:58:42 +00:00
Kconfig
sfc: Add support for SFC9000 family (2)
2009-11-29 17:23:57 -08:00
mac.h
sfc: make functions static
2010-10-21 03:09:43 -07:00
Makefile
sfc: Add support for SFE4003 board and TXC43128 PHY
2010-09-22 13:26:45 -07:00
mcdi_mac.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mcdi_pcol.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mcdi_phy.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mcdi.c
sfc: Use write-combining to reduce TX latency
2011-03-04 17:58:42 +00:00
mcdi.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mdio_10g.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mdio_10g.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
mtd.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
net_driver.h
sfc: Bump version to 3.1
2011-02-28 23:57:24 +00:00
nic.c
sfc: Remove configurable FIFO thresholds for pause frame generation
2011-02-28 23:57:24 +00:00
nic.h
sfc: Remove configurable FIFO thresholds for pause frame generation
2011-02-28 23:57:24 +00:00
phy.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
qt202x_phy.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
regs.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
rx.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
selftest.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
selftest.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
siena.c
sfc: Remove configurable FIFO thresholds for pause frame generation
2011-02-28 23:57:24 +00:00
spi.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
tenxpress.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
tx.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
txc43128_phy.c
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00
workarounds.h
sfc: Update copyright dates
2011-02-28 23:57:24 +00:00