From: Nelson Escobar <nelson@myri.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] 64 bit PCI DMA transfers?
Date: Wed, 06 Sep 2000 19:29:19 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590678205458@msgid-missing> (raw)
Hi,
Do 64 bit PCI DMA transfers work in the test7 kernel yet?
Doing 64 bit PCI DMA transfers to memory less than 2 gigs works
fine. When I use 4 gigs of memory, the physical address of the last 2
gigs seems to be 0x100000000 - 0x17fffffff. When I try doing PCI DMA
transfers into this area, everything starts going wrong.
Is this a problem with the kernel? Or is it a problem with my driver? or
both?
Nelson Escobar
nelson@myri.com
next reply other threads:[~2000-09-06 19:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-06 19:29 Nelson Escobar [this message]
2000-09-06 21:11 ` [Linux-ia64] 64 bit PCI DMA transfers? David Mosberger
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