CVS commit: src/sys/dev/pci

["SAITOH Masanobu" <msaitoh%netbsd.org@localhost>]

Module Name:    src
Committed By:   msaitoh
Date:           Tue Feb 26 11:06:24 UTC 2013

Modified Files:
        src/sys/dev/pci: if_bge.c if_bgereg.h

Log Message:
Add some bugfixes and enhancement from FreeBSD:

- Workaround for BCM5906 silicon bug. When auto-negotiation results in
 half-duplex operation, excess collision on the ethernet link may cause
 internal chip delays that may result in subsequent valid frames being
 dropped due to insufficient receive buffer resources.
 (FreeBSD: r214219, r214251, r214292)

- Allow write DMA to request larger DMA burst size to get better
 performance on BCM5785.
 (FreeBSD r213333: OpenBSD 1.294)

- Enable TX MAC state machine lockup fix for both BCM5755 or higher
 and BCM5906. Publicly available data sheet just says it may happen
 due to corrupted TxMbuf.
 (FreeBSD r214216)

- Follow Broadcom datasheet:
 Delay 100 microseconds after enabling transmit MAC.
 Delay 10 microseconds after enabling receive MAC.
 (FreeBSD r241220)


To generate a diff of this commit:
cvs rdiff -u -r1.205 -r1.206 src/sys/dev/pci/if_bge.c
cvs rdiff -u -r1.59 -r1.60 src/sys/dev/pci/if_bgereg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.