Bug 23011

Summary: UDMA 66 not working on 4.1.1-Release ?
Product: Base System Reporter: Barry Tigner <tigner>
Component: kernAssignee: freebsd-bugs (Nobody) <bugs>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: Unspecified   
Hardware: Any   
OS: Any   

Description Barry Tigner 2000-11-21 19:00:01 UTC
dmesg reports HD is running at ata33, cdrom at PIO4. Both
work ok in Win98, checked bios settings , recompiled kernel
with ata dma enabled, still get the same message. I AM using
an 80 wire ata66 cable on ATA0 and a 40 wire ata33 cable on
ATA1. I've tried replacing the cables with new ones even though
it appears to work ok in windows, and still get the same message.

dmesg excerpt follows here.
> dmesg |grep ata
atapci0: <SiS 5591 ATA33 controller> port 0xd000-0xd00f,0xd400-0xd403,0xd800-0xd807,0xe000-0xe003,0xe400-0xe407 irq 14 at device 0.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
ata0-master: DMA limited to UDMA33, non-ATA66 compliant cable
ad0: 19531MB <Maxtor 92048U8> [39683/16/63] at ata0-master using UDMA33
acd0: CDROM <CD-ROM 56X> at ata1-master using PIO4
afd0: 120MB <LS-120 COSM 02 UHD Floppy> [963/8/32] at ata1-slave using PIO2  


Mainboard=Asus p5A-B, Ali chipset, builtin snd,agp2x , shared mem for vga
CPU=AMD K6-2 3DNow/400mhz.
MEM=64MB PC100 SDRAM
HD=Maxtor 7200rpm 2MB cache ata66 20GB  ATA0-master
CDrom=56x ATA33 MagicSpin ATA1-master
nofloppy
LS-120 superfloppy = ATA1-slave

Fix: 

no clue at all. I have enabled ata dma in the kernel and recompiled.
I've tried recompiling with optimizations on, still same problem.
How-To-Repeat: it repeats all the time.
Comment 1 jrd 2000-11-26 01:54:02 UTC
 Same problem appears on FBSD 4.2-RELEASE. Using Promise 66
paddle board, IBM fast IDE drive, proper UDMA ribbon cable
(including those supplied by Promise Inc and IBM).

dmesg excerpt:
ata2-master: DMA limited to UDMA33, non-ATA66 compliant cable
ad4: 29314MB <IBM-DTLA-307030> [59560/16/63] at ata2-master UDMA33
acd0: CDROM <TOSHIBA CD-ROM XM-6402B> at ata2-slave using PIO4
Mounting root from ufs:/dev/ad4s1a

Motherboard is an older Tyan TomCat IV. IDE DMA support is
turned on in the <rebuilt> kernel.
	Joe D.
Comment 2 gary 2000-11-28 21:26:40 UTC
From: gArgraves@earthlink.net

I have experiance the same problems.

hardware: MB = EPOX EP-MVP3G2 w/VIA Apollo MVP3 AGPset
               CPU = AMD K6-2 500Mhz
               RAM = 128 SDRAM
               2 Linksys Fast ethernet 10/100
               HD = MAXSTOR 20G (ATA66) and also tried with a WD 45G (ATA66)

I have also tried other modes like various PIO. Nothing seem to work correctly. Always get a variaty of disk errors.

If i put a non-ATA (UDMA) drive in system I can install freeBSD with sucessfully.

This seems to be true for ver 4.0 from CD.  4.1.1 from ftp server and ver 4.2 from ftp server.

PS this URL may give in-site to problem: 
http://www.uwsg.indiana.edu/hypermail/linux/kernel/9812.0/0621.html

Gary

Comment 3 mark 2000-12-04 00:44:59 UTC
Hi,

I'm experiencing the same problem in getting UDMA66 out of FreeBSD.

dmesg snippet follows:
...
atapci0: <VIA 82C686 ATA66 controller> port 0xd000-0xd00f at device 7.1 on 
pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
...
ad0: 9773MB <FUJITSU MPF3102AT> [19857/16/63] at ata0-master UDMA66
ad1: 4110MB <QUANTUM FIREBALL ST4.3A> [14848/9/63] at ata0-slave UDMA33
acd0: CD-RW <YAMAHA CRW8824E> at ata1-master using WDMA2
acd1: DVD-ROM <Pioneer DVD-ROM ATAPIModel DVD-104S 0118> at ata1-slave using 
UDMA33

I believe I've got round the problem by editing ata-dma.c and commenting out 
the code that sets udmamode back to 2 (which the above dmesg shows).

Anyone knowing a good I/O benchmark to confirm this please let me know.
Comment 4 Søren Schmidt freebsd_committer freebsd_triage 2001-05-30 11:51:35 UTC
State Changed
From-To: open->closed

We only support uptil UDMA33 on the Sis chips.