amd64/135040: [ata] FreeBSD/amd64 does not (always) detect disk on SB600/AliveXFire eSata 2

Ralf Folkerts ralf.folkerts at
Sun Dec 5 14:00:22 UTC 2010

The following reply was made to PR amd64/135040; it has been noted by GNATS.

From: Ralf Folkerts <ralf.folkerts at>
To: bug-followup at
Subject: Re: amd64/135040: [ata] FreeBSD/amd64 does not (always) detect disk
 on SB600/AliveXFire eSata 2
Date: Sun, 05 Dec 2010 14:50:08 +0100

 May be solved; sorry, only posted a question to the List on 12/03/2010 
 and forgot to add to PR. Below the Text:
 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,
 #0: Fri Dec  3 19:14:06 CET 2010 
 root at  amd64
 atapci0 at pci0:0:18:0:    class=0x010601 card=0x43821849 chip=0x43801002 
      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 
 Trying to mount root from ufs:/dev/ad4s1a
 atapci0: <ATI IXP600 SATA300 controller> port 
 -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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