PR/52468 CVS commit: src/sys/dev/isa

["Jaromir Dolecek" <jdolecek%netbsd.org@localhost>]

The following reply was made to PR kern/52468; it has been noted by GNATS.

From: "Jaromir Dolecek" <jdolecek%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/52468 CVS commit: src/sys/dev/isa
Date: Tue, 29 May 2018 06:14:34 +0000

 Module Name:	src
 Committed By:	jdolecek
 Date:		Tue May 29 06:14:34 UTC 2018
 
 Modified Files:
 	src/sys/dev/isa: isadma.c isadmareg.h isareg.h
 
 Log Message:
 fix off-by-one in the mapping of the ISA DMA page registers, they actually
 start at 0x81; the code used bus_space_map() starting from 0x80 but
 used +1 offset for actual I/O, now it maps starting 0x81 and does I/O
 without offset
 
 the reads and writes work exactly the same as before, but this frees
 0x80 for being mapped independantly
 
 patch provided in PR kern/52468 by Jonathan Chapman; checked against the spec
 and also FreeBSD sys/x86/isa/isa_dma.c
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.66 -r1.67 src/sys/dev/isa/isadma.c
 cvs rdiff -u -r1.8 -r1.9 src/sys/dev/isa/isadmareg.h
 cvs rdiff -u -r1.9 -r1.10 src/sys/dev/isa/isareg.h
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.