freebsd-dev/sys/dev/bge
Gleb Smirnoff 14bbd30f2e Since BGE_MBX_TX_HOST_PROD0_LO register is write-only to software,
we can cache its value in the softc. Eliminates one PCI register
write per call to bge_start().

A 1.8% speedup for UDP_RR test on my old box.

Obtained from:	NetBSD(jonathan) via delphij
2005-12-18 20:26:12 +00:00
..
if_bge.c Since BGE_MBX_TX_HOST_PROD0_LO register is write-only to software, 2005-12-18 20:26:12 +00:00
if_bgereg.h Since BGE_MBX_TX_HOST_PROD0_LO register is write-only to software, 2005-12-18 20:26:12 +00:00