CVS commit: src

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Thu Apr 15 23:47:53 UTC 1999

Modified Files:
        src/sys/arch/alpha/pci: mcpcia_dma.c
Log Message:
Fix a silly bug present since rev 1.1; the direct-mapped window is
supposed to be Window 1, but a cut'n'paste error made it stomp over
Window 0, thus breaking ISA DMA.  Fix this.  (Confirmed to work with
floppy driver.)

While I'm here, do something I've been meaning to do for a while: change
Window 1 from a 1G at 2G to a 2G at 2G direct-mapped window, and add
a Window 2 of 1G at 1G SGMAP-mapped.  Chain Window 2 to Window 1, and
use it as a fall-back for PCI DMA if the system has more than 2G of RAM.