From nobody@FreeBSD.ORG  Wed Jan  5 12:23:20 2000
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Date: Wed,  5 Jan 2000 12:23:20 -0800 (PST)
From: timlee@netcom.com
Sender: nobody@FreeBSD.ORG
To: freebsd-gnats-submit@FreeBSD.org
Subject: ATA/EIDE DMA does not work with some hardware (ALI Aladdin, IBM 34GXP)
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>Number:         15923
>Category:       kern
>Synopsis:       ATA/EIDE DMA does not work with some hardware (ALI Aladdin, IBM 34GXP)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    sos
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Jan  5 12:30:00 PST 2000
>Closed-Date:    Thu Aug 24 23:47:55 PDT 2000
>Last-Modified:  Fri Aug 25 00:07:31 PDT 2000
>Originator:     Timothy J. Lee
>Release:        3.4-STABLE-20000103
>Organization:
>Environment:
Asus P5A motherboard (ALI Aladdin chipset), IBM 34GXP 13.6GB
(DPTA-371360), AMD K6-2 450 processor, 64MB memory.
>Description:
The above combination gives DMA errors when used with a kernel
whose ATA DMA is turned on (controller wdc0 ... flags 0xa0ffa0ff).
With ATA DMA turned off (controller wdc0 ... flags 0x80ff80ff), no
problems.  Errors do not cause crashes or damage, but slow down the
system and cause numerous messages to be printed on the console.
NetBSD 1.4.1 has a similar problem.  Linux kernel 2.2.13 with the
"experimental" Acer ATA DMA driver does not have this problem.
>How-To-Repeat:
Use a kernel with ATA DMA turned on with the listed combination of
hardware (probably motherboard/chipset and disk are the key pieces).
>Fix:
GENERIC kernels should keep ATA DMA off as they are now.  Turning
the feature on in the GENERIC kernel (as NetBSD 1.4.1 does) can make
installing and initial configuration difficult on some combinations
of hardware.  A true fix may require looking into some Acer chipset
specific issues as Linux 2.2 does.

>Release-Note:
>Audit-Trail:

From: Soren Schmidt <sos@freebsd.dk>
To: timlee@netcom.com
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: kern/15923: ATA/EIDE DMA does not work with some hardware (ALI Aladdin, IBM 34GXP)
Date: Wed, 5 Jan 2000 21:39:04 +0100 (CET)

 It seems timlee@netcom.com wrote:
 > The above combination gives DMA errors when used with a kernel
 > whose ATA DMA is turned on (controller wdc0 ... flags 0xa0ffa0ff).
 > With ATA DMA turned off (controller wdc0 ... flags 0x80ff80ff), no
 > problems.  Errors do not cause crashes or damage, but slow down the
 > system and cause numerous messages to be printed on the console.
 > NetBSD 1.4.1 has a similar problem.  Linux kernel 2.2.13 with the
 > "experimental" Acer ATA DMA driver does not have this problem.
 > >How-To-Repeat:
 > Use a kernel with ATA DMA turned on with the listed combination of
 > hardware (probably motherboard/chipset and disk are the key pieces).
 > >Fix:
 > GENERIC kernels should keep ATA DMA off as they are now.  Turning
 > the feature on in the GENERIC kernel (as NetBSD 1.4.1 does) can make
 > installing and initial configuration difficult on some combinations
 > of hardware.  A true fix may require looking into some Acer chipset
 > specific issues as Linux 2.2 does.
 
 Have you tried the new ATA driver in 4.0 current ??
 
 -Sren
 

From: =?iso-8859-1?Q?Ra=FAl?= Pedroche <r_pedroche@yahoo.com>
To: freebsd-gnats-submit@FreeBSD.org, timlee@netcom.com,
	sos@freebsd.dk
Cc:  
Subject: Re: kern/15923: ATA/EIDE DMA does not work with some hardware (ALI 
 Aladdin, IBM 34GXP)
Date: Tue, 02 May 2000 10:29:53 +0200

   With ALI Aladdin, K6II@450, 64MB RAM and FreeBSD-4.0 _but_ a Western
 Digital Caviar 33200, system runs fine, but DMA is disabled by the
 kernel on startup due to CRC problems when root filesystem is mounted.
 
   dmesg output follows, note last 6 lines.
 
 >>>BEGIN:dmesg-output.txt------------------------------------------------=
 -------
 Copyright (c) 1992-2000 The FreeBSD Project.
 Copyright (c) 1982, 1986, 1989, 1991, 1993
         The Regents of the University of California. All rights
 reserved.
 FreeBSD 4.0-RELEASE #0: Thu Apr 20 07:39:18 CEST 2000
     root@taller.langre-oficina.net:/usr/src/sys/compile/TALLER2
 Timecounter "i8254"  frequency 1193182 Hz
 CPU: AMD-K6(tm) 3D processor (451.02-MHz 586-class CPU)
   Origin =3D "AuthenticAMD"  Id =3D 0x58c  Stepping =3D 12
   Features=3D0x8021bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,PGE,MMX>
   AMD Features=3D0x80000800<SYSCALL,3DNow!>
 real memory  =3D 67043328 (65472K bytes)
 avail memory =3D 62058496 (60604K bytes)
 Preloaded elf kernel "kernel" at 0xc02d5000.
 md0: Malloc disk
 npx0: <math processor> on motherboard
 npx0: INT 16 interface
 pcib0: <AcerLabs M1541 (Aladdin-V) PCI host bridge> on motherboard
 pci0: <PCI bus> on pcib0
 pcib1: <AcerLabs M5243 PCI-PCI bridge> at device 1.0 on pci0
 pci1: <PCI bus> on pcib1
 pci1: <S3 Trio3D/2X graphics accelerator> at 0.0
 isab0: <AcerLabs M1533 portable PCI-ISA bridge> at device 7.0 on pci0
 isa0: <ISA bus> on isab0
 atapci0: <AcerLabs Aladdin ATA33 controller> port 0xf000-0xf00f at
 device 15.0 on pci0
 ata0: at 0x1f0 irq 14 on atapci0
 ata1: at 0x170 irq 15 on atapci0
 ahc0: <Adaptec aic7850 SCSI adapter> port 0xe000-0xe0ff mem
 0xe5000000-0xe5000fff irq 10 at device 18.0 on pci0
 ahc0: aic7850 Single Channel A, SCSI Id=3D7, 3/255 SCBs
 ahc0: Host Adapter Bios disabled.  Using default SCSI device parameters
 ed0: <NE2000 PCI Ethernet (KTI)> port 0xe400-0xe41f irq 11 at device
 20.0 on pci0
 ed0: address 00:40:f6:4c:19:e8, type NE2000 (16 bit) =
 
 fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on
 isa0
 fdc0: FIFO enabled, 8 bytes threshold
 fd0: <1440-KB 3.5" drive> on fdc0 drive 0
 atkbdc0: <keyboard controller (i8042)> at port 0x60-0x6f on isa0
 atkbd0: <AT Keyboard> irq 1 on atkbdc0
 psm0: <PS/2 Mouse> irq 12 on atkbdc0
 psm0: model Generic PS/2 mouse, device ID 0
 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on
 isa0
 sc0: <System console> on isa0
 sc0: VGA <16 virtual consoles, flags=3D0x200>
 sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
 sio0: type 16550A
 sio1 at port 0x2f8-0x2ff irq 3 on isa0
 sio1: type 16550A
 ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
 ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
 lpt0: <Printer> on ppbus0
 lpt0: Interrupt-driven port
 ad0: 3098MB <WDC AC33200L> [6296/16/63] at ata0-master using UDMA33
 acd0: CDROM <Creative CD-ROM CD4832E> at ata1-master using PIO4
 Waiting 2 seconds for SCSI devices to settle
 Mounting root from ufs:/dev/ad0s1a
 ad0: UDMA ICRC READ ERROR blk# 0 retrying
 ad0: UDMA ICRC READ ERROR blk# 0 retrying
 ad0: UDMA ICRC READ ERROR blk# 0 retrying
 ad0: UDMA ICRC READ ERROR blk# 0ata0-master: WARNING: WAIT_READY
 active=3DATA_ACTIVE_ATA
  falling back to PIO mode
 >>>END:dmesg-output.txt--------------------------------------------------=
 -------------
 
 -- =
 
 Ra=FAl Pedroche
 
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Responsible-Changed-From-To: freebsd-bugs->sos 
Responsible-Changed-By: johan 
Responsible-Changed-When: Thu Aug 24 12:10:16 PDT 2000 
Responsible-Changed-Why:  
Over to ATA maintainer. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=15923 
State-Changed-From-To: open->closed 
State-Changed-By: sos 
State-Changed-When: Thu Aug 24 23:47:55 PDT 2000 
State-Changed-Why:  

You get ICRC errors which indicates you have a cable proble.. 
Try a new cable, and make sure its not close to any EMC 
radiating source (PSU etc).. 
I have the same board and disk here, and it works just fine, 
There are no outstanding problems with the Acer support 
with the ata driver. 


http://www.freebsd.org/cgi/query-pr.cgi?pr=15923 
>Unformatted:
