From: "Cho, joon-woo" <jwc@core.kaist.ac.kr>
To: <linux-kernel@vger.kernel.org>
Subject: [Q] IDE drive DMA failure
Date: Tue, 19 Aug 2003 19:26:35 +0900 [thread overview]
Message-ID: <003701c3663c$5db3ef10$a5a5f88f@core8fyzomwjks> (raw)
Sorry, by my mistake I can't get reply of this question.
Please answer again, very sorry.
I send some data from ide disk to some PCI device's RAM directly.
At above sentence, 'directly' means that data is not transferred through
RAM.
Data path is only from ide disk controller to PCI device's RAM.
Anyway data can be transferred by PIO.
But DMA method can't operate. Below is error message.
Aug 18 15:08:12 localhost kernel: hdc: dma_timer_expiry: status=0x58 {
DriveReady SeekComplete DataRequest }
Aug 18 15:08:12 localhost kernel: hdc: timeout waiting for DMA
Aug 18 15:08:12 localhost kernel: ide_dmaproc: chipset supported
ide_dma_timeout func only: 14
After this DMA timeout error, data is transferred by PIO.
Do you have similar experience?
I want to send data by DMA method.
What is problem? Kernel? Hardware?
And how can I solve this problem?
Please give me anser or hint, Thanks!
Below is my system spec
CPU
celeron 400
Motherboard
440BX
IDE interface
Intel Corporation 82371AB PIIX4 IDE (rev 1).
HDD
hdc: IC35L040AVVA07-0, ATA DISK drive (Hitachi)
next reply other threads:[~2003-08-19 10:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-19 10:26 Cho, joon-woo [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-08-19 7:10 Cho, joon-woo
2003-08-19 5:59 Cho, joon-woo
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='003701c3663c$5db3ef10$a5a5f88f@core8fyzomwjks' \
--to=jwc@core.kaist.ac.kr \
--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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®