Date: Fri, 03 Dec 2010 20:31:40 +0100 From: Ralf Folkerts <ralf.folkerts@gmx.de> To: freebsd-amd64@FreeBSD.org Subject: Check 64bit DMA capability of Hardware (amd64/135040) Message-ID: <4CF9459C.9070205@gmx.de>
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Hi,
a while ago I created PR amd64/135040 because of Problems caused by the
SB600 on my MB not being 64bit capable (disk not being detected, disk
corruption after buildworld/buildkernel). Since then I lived with "set
hw.physmem=4gb" in my loader.conf.
The other day I found a BIOS-Update for my MB with the Note "Update PCIE
Initial Code". I did install the new BIOS, installed 8.1 from USB-Stick
to a "new" Harddisk, booted off that disk, csupped Sources, ran
buildworld buildkernel installworld installkernel, rebooted, ran built
and installed again, ...
The System did all this fine; disk was always being detected, no data
corruption, fsck ran w/o problems.
However, I'd be more confident -before removing set "set hw.physmem" and
run with "complete memory" off my "Production Disk"- if there was a way
to check, if the SB600 is really doing it's DMA correctly now (or was
the Driver changed to not do DMA on SB600?) - or if, by some
coincidence, the error did not show up during my "tests" but still
might/will occur.
Is there a way to definitely check if the Disk-DMA is really capable of
64bit DMA?
Would be cool if there was a way to check this...
MTIA, Cheers,
_ralf_
FreeBSD dhcp9.home.folkerts-net.de 8.2-PRERELEASE FreeBSD 8.2-PRERELEASE
#0: Fri Dec 3 19:14:06 CET 2010
root@dhcp9.home.folkerts-net.de:/usr/obj/usr/src/sys/GENERIC amd64
atapci0@pci0:0:18:0: class=0x010601 card=0x43821849 chip=0x43801002
rev=0x00
hdr=0x00
vendor = 'ATI Technologies Inc. / Advanced Micro Devices, Inc.'
device = 'IXP SB600 Serial ATA Controller'
class = mass storage
subclass = SATA
ad4: 152627MB <FUJITSU MHY2160BH 0000000B> at ata2-master UDMA100 SATA
1.5Gb/s
Trying to mount root from ufs:/dev/ad4s1a
atapci0: <ATI IXP600 SATA300 controller> port
0xc000-0xc007,0xb000-0xb003,0xa000
-0xa007,0x9000-0x9003,0x8000-0x800f mem 0xfe9ff800-0xfe9ffbff irq 22 at
device 1
8.0 on pci0
atapci0: [ITHREAD]
atapci0: AHCI v1.10 controller with 4 3Gbps ports, PM supported
ata2: <ATA channel 0> on atapci0
ata2: port is not ready (timeout 0ms) tfd = 000001d0
ata2: software reset clear timeout
ata2: [ITHREAD]
ata3: <ATA channel 1> on atapci0
ata3: port is not ready (timeout 0ms) tfd = 00000180
ata3: software reset clear timeout
ata3: [ITHREAD]
ata4: <ATA channel 2> on atapci0
ata4: [ITHREAD]
ata5: <ATA channel 3> on atapci0
ata5: [ITHREAD]
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