From: "Stephen Carr" <sgcarr@civeng.adelaide.edu.au>
To: linux-kernel@vger.kernel.org
Date: Tue, 21 Nov 2000 08:41:49 +1030
Subject: Dma problems - Aopen Ax34pro VIA chipset seagate drive
Reply-to: sgcarr@civeng.adelaide.edu.au
Message-ID: <3A1A354D.3927.5A09E7EB@localhost>
Sender: linux-kernel-owner@vger.kernel.org

I have just subscribed to this list - so possibly email me directly 
sgcarr@civeng.adelaide.edu.au

Status: kernel 2.4.0-test10 (no patches added)
Problem: getting dma problems - having to run system with no dma 
for disc access - seems to be a bus mastering problem.
Hardware: Aopen AX34Pro mother board, Via chipset with via686a, 
Seagate Baracuda ATA66 20GB disc - Latest Bios for motherboard
Sony CDU4811 cdrom

I am willing to test patches.

Snips of logs etc follow

Config
-
# ATA/IDE/MFM/RLL support
#
CONFIG_IDE=y

#
# IDE, ATA and ATAPI Block devices
#
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_HD_IDE is not set
# CONFIG_BLK_DEV_HD is not set
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
# CONFIG_BLK_DEV_IDEDISK_VENDOR is not set
# CONFIG_BLK_DEV_IDEDISK_FUJITSU is not set
# CONFIG_BLK_DEV_IDEDISK_IBM is not set
# CONFIG_BLK_DEV_IDEDISK_MAXTOR is not set
# CONFIG_BLK_DEV_IDEDISK_QUANTUM is not set
# CONFIG_BLK_DEV_IDEDISK_SEAGATE is not set
# CONFIG_BLK_DEV_IDEDISK_WD is not set
# CONFIG_BLK_DEV_COMMERIAL is not set
# CONFIG_BLK_DEV_TIVO is not set
# CONFIG_BLK_DEV_IDECS is not set
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
# CONFIG_BLK_DEV_ISAPNP is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_PCI_WIP is not set
# CONFIG_IDEDMA_NEW_DRIVE_LISTINGS is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_AEC62XX_TUNING is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_WDC_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD7409 is not set
# CONFIG_AMD7409_OVERRIDE is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_HPT34X_AUTODMA is not set
# CONFIG_BLK_DEV_HPT366 is not set
# CONFIG_BLK_DEV_PIIX is not set
# CONFIG_PIIX_TUNING is not set
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_PDC202XX is not set
# CONFIG_PDC202XX_BURST is not set
# CONFIG_BLK_DEV_OSB4 is not set
# CONFIG_BLK_DEV_SIS5513 is not set
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
CONFIG_BLK_DEV_VIA82CXXX=y
# CONFIG_IDE_CHIPSETS is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_IDEDMA_IVB is not set
# CONFIG_DMA_NONPCI is not set
CONFIG_BLK_DEV_IDE_MODES=y

#

Dmesg - warning due to ide0=ata66 in append line of lilo

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override 
with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 16
VP_IDE: VIA vt82c686a IDE UDMA66 controller on pci0:7.1
VP_IDE: ATA-66/100 forced bit set (WARNING)!!
    ide0: BM-DMA at 0x6400-0x6407, BIOS settings: hda:DMA, 
hdb:pio
    ide1: BM-DMA at 0x6408-0x640f, BIOS settings: hdc:DMA, 
hdd:pio
hda: ST320420A, ATA DISK drive
hdc: SONY CDU4811, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 15
ide1 at 0x170-0x177,0x376 on irq 14
hda: 39851760 sectors (20404 MB) w/2048KiB Cache, 
CHS=2480/255/63, UDMA(66)
hdc: ATAPI 48X CD-ROM drive, 120kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.11
Partition check:
 hda:hda: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hda: irq timeout: status=0x50 { DriveReady SeekComplete }
hda: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hda: irq timeout: status=0x50 { DriveReady SeekComplete }
hda: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hda: irq timeout: status=0x50 { DriveReady SeekComplete }
hda: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hda: irq timeout: status=0x50 { DriveReady SeekComplete }
hda: DMA disabled
ide0: reset: success
 hda1 hda2 hda3 hda4 < hda5 hda6 hda7 >

------
VFS: Disk change detected on device ide1(22,0)
ISO 9660 Extensions: Microsoft Joliet Level 3
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x58 { DriveReady SeekComplete 
DataRequest }
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x51 { DriveReady SeekComplete Error }
hdc: irq timeout: error=0x04
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x58 { DriveReady SeekComplete 
DataRequest }
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
ATAPI device hdc:
  Error: No sense data -- (Sense key=0x00)
  No additional sense information -- (asc=0x00, ascq=0x00)
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
ISOFS: changing to secondary root
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x58 { DriveReady SeekComplete 
DataRequest }
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x51 { DriveReady SeekComplete Error }
hdc: irq timeout: error=0x04
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
hdc: timeout waiting for DMA
ide_dmaproc: chipset supported ide_dma_timeout func only: 14
hdc: irq timeout: status=0x58 { DriveReady SeekComplete 
DataRequest }
ide_dmaproc: chipset supported ide_dma_lostirq func only: 13
hdc: lost interrupt
ATAPI device hdc:
  Error: No sense data -- (Sense key=0x00)
  No additional sense information -- (asc=0x00, ascq=0x00)

Performance

/dev/hda:
 Timing buffer-cache reads:   128 MB in  0.69 seconds =185.51 
MB/sec
 Timing buffered disk reads:  64 MB in 12.01 seconds =  5.33 
MB/sec

Thanks in advance
Stephen Carr


Stephen Carr
Computing Officer
Department of Civil and Environmental Engineering
University of Adelaide
Adelaide, South Australia,
Australia 5005
Phone +618 8303-4313
Fax   +618 8303-4359
Email sgcarr@civeng.adelaide.edu.au
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