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add comment about pciide and wd flags (from i386 GENERIC).

This commit is contained in:
grant 2002-10-18 01:54:15 +00:00
parent 8872a5d6af
commit c571e22b48
1 changed files with 20 additions and 5 deletions
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25
sys/arch/sparc64/conf/GENERIC32
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@ -1,10 +1,10 @@
# $NetBSD: GENERIC32,v 1.51 2002/10/14 18:39:40 elric Exp $
# $NetBSD: GENERIC32,v 1.52 2002/10/18 01:54:15 grant Exp $
include "arch/sparc64/conf/std.sparc64"
options INCLUDE_CONFIG_FILE # embed config file in kernel binary
#ident "GENERIC-$Revision: 1.51 $"
#ident "GENERIC-$Revision: 1.52 $"
maxusers 64
@ -304,15 +304,30 @@ ss* at scsibus? target ? lun ? # SCSI scanners
ses* at scsibus? target ? lun ? # SCSI SES/SAF-TE devices
uk* at scsibus? target ? lun ? # unknown SCSI
# PCI IDE.
pciide* at pci ? dev ? function ? flags 0x0000
# IDE and related devices
# PCI IDE controllers - see pciide(4) for supported hardware.
# The 0x0001 flag force the driver to use DMA, even if the driver doesn't know
# how to set up DMA modes for this chip. This may work, or may cause
# a machine hang with some controllers.
pciide* at pci? dev ? function ? flags 0x0000
atapibus* at pciide? channel ?
# IDE drives
# Flags are used only with controllers that support DMA operations
# and mode settings (e.g. some pciide controllers)
# The lowest order four bits (rightmost digit) of the flags define the PIO
# mode to use, the next set of four bits the DMA mode and the third set the
# UltraDMA mode. For each set of four bits, the 3 lower bits define the mode
# to use, and the last bit must be 1 for this setting to be used.
# For DMA and UDMA, 0xf (1111) means 'disable'.
# 0x0fac means 'use PIO mode 4, DMA mode 2, disable UltraDMA'.
# (0xc=1100, 0xa=1010, 0xf=1111)
# 0x0000 means "use whatever the drive claims to support".
## Disable UDMA 4 which causes data corruption on the Acer Labs
## chipset on Sun Blade 100 and Netra X1 machines.
wd* at pciide? channel ? drive ? flags 0x0a00 # Disable UDMA 4
cd* at atapibus? drive ? flags 0x0000 # ATAPI CD-ROM drives
sd* at atapibus? drive ? flags 0x0000 # ATAPI disk drives
uk* at atapibus? drive ? flags 0x0000 # ATAPI unknown