From: rwhron@earthlink.net
To: linux-kernel@vger.kernel.org
Subject: IDE DMA disabled with via82cxxx on kernels >= 2.5.35
Date: Wed, 8 Jan 2003 00:16:51 -0500 [thread overview]
Message-ID: <20030108051651.GA6511@rushmore> (raw)
I have two machines with VIA chipsets. Recent 2.5
kernels boot with "DMA disabled".
On Athlon, hdparm -tT /dev/hda is about 8 times higher
on 2.4 than 2.5 kernels. hdparm -i says dma is (on) though.
I tried CONFIG_BLK_DEV_IDEDMA_FORCED=y, but that didn't
eliminated the "DMA disabled" message. Other IDE settings are:
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_IDEDISK_MULTI_MODE=y
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_IDEDMA_AUTO=y
CONFIG_BLK_DEV_IDE_MODES=y
boot message:
VP_IDE: IDE controller at PCI slot 00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100%% native mode: will probe irqs later
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
ide0: BM-DMA at 0xd000-0xd007, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xd008-0xd00f, BIOS settings: hdc:DMA, hdd:pio
hda: IC35L040AVER07-0, ATA DISK drive
hda: IRQ probe failed (0xffffffba)
hda: DMA disabled
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03)
00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586B PIPC Bus Master IDE (rev 06)
00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
I also have a K6/2 with a VIA chipset. 2.5.34 and earlier were fine.
2.5.34-mm4 and subsequent 2.5.x kernels boot with "DMA disabled".
lspci
00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C586/A/B PCI-to-ISA [Apollo VP] (rev 47)
00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)
The K6/2 boots with:
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller at PCI slot 00:07.1
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt82c586b (rev 47) IDE UDMA33 controller on pci00:07.1
ide0: BM-DMA at 0xe000-0xe007, BIOS settings: hda:DMA, hdb:DMA
ide1: BM-DMA at 0xe008-0xe00f, BIOS settings: hdc:DMA, hdd:DMA
hda: Maxtor 51536U3, ATA DISK drive
hdb: ATAPI CDROM, ATAPI CD/DVD-ROM drive
hda: DMA disabled
hdb: DMA disabled
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
--
Randy Hron
http://home.earthlink.net/~rwhron/kernel/bigbox.html
next reply other threads:[~2003-01-08 5:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-08 5:16 rwhron [this message]
2003-01-08 14:02 ` IDE DMA disabled with via82cxxx on kernels >= 2.5.35 Alan Cox
-- strict thread matches above, loose matches on Subject: below --
2003-01-14 2:49 rwhron
2003-01-14 3:47 ` Andrew Morton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20030108051651.GA6511@rushmore \
--to=rwhron@earthlink.net \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.