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From: Colin Ngam <cngam@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces.
Date: Thu, 15 May 2003 23:45:42 +0000	[thread overview]
Message-ID: <marc-linux-ia64-105590723705865@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705823@msgid-missing>

"David S. Miller" wrote:

>    From: James Bottomley <James.Bottomley@HansenPartnership.com>
>    Date: 15 May 2003 17:47:04 -0500
>
>    OK, now you've confused me.
>
> Their hardware platform cannot guarentee low-32bit memory allocations
> to devices because each node can have physical memory starting at
> >4GB etc etc.

Hi,

Something else I do not understand .. in the PCI world, what does
Physical Memory Address got to do with 32Bit Mapped DMA
Bus Address?

Not only do we not guarantee that we cannot generate 32 Bit Memory
Allocations .. we plain old do not have Memory Addresses smaller
below 32Bits .. well, below 48 Bits for that matter .. I have
not seen any of the drivers broken yet - e.g. qlXXX, acenic, tg3 etc.

Thanks.

colin



  parent reply	other threads:[~2003-05-15 23:45 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-15 14:44 [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Colin Ngam
2003-05-15 14:44 ` James Bottomley
2003-05-15 15:05 ` Colin Ngam
2003-05-15 15:06 ` David Mosberger
2003-05-15 15:12 ` James Bottomley
2003-05-15 15:47 ` David Mosberger
2003-05-15 15:48 ` David Mosberger
2003-05-15 15:48 ` Colin Ngam
2003-05-15 15:50 ` Colin Ngam
2003-05-15 19:06 ` Grant Grundler
2003-05-15 19:14 ` David Mosberger
2003-05-15 19:16 ` Grant Grundler
2003-05-15 19:29 ` Grant Grundler
2003-05-15 20:07 ` David S. Miller
2003-05-15 20:15 ` David S. Miller
2003-05-15 20:19 ` David S. Miller
2003-05-15 20:24 ` Jesse Barnes
2003-05-15 21:17 ` Grant Grundler
2003-05-15 21:29 ` Matthew Wilcox
2003-05-15 22:14 ` Colin Ngam
2003-05-15 22:44 ` Colin Ngam
2003-05-15 22:47 ` James Bottomley
2003-05-15 23:24 ` James Bottomley
2003-05-15 23:25 ` Colin Ngam
2003-05-15 23:27 ` David S. Miller
2003-05-15 23:32 ` Colin Ngam
2003-05-15 23:39 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-15 23:40 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Colin Ngam
2003-05-15 23:40 ` David S. Miller
2003-05-15 23:41 ` David S. Miller
2003-05-15 23:42 ` David S. Miller
2003-05-15 23:45 ` Colin Ngam [this message]
2003-05-15 23:46 ` David S. Miller
2003-05-15 23:51 ` Colin Ngam
2003-05-15 23:53 ` David S. Miller
2003-05-15 23:57 ` Colin Ngam
2003-05-16  0:03 ` David S. Miller
2003-05-16  0:06 ` David S. Miller
2003-05-16  0:11 ` David S. Miller
2003-05-16  0:17 ` David S. Miller
2003-05-16  0:29 ` Jesse Barnes
2003-05-16  0:31 ` James Bottomley
2003-05-16  0:31 ` David S. Miller
2003-05-16  0:32 ` Colin Ngam
2003-05-16  0:32 ` David S. Miller
2003-05-16  0:36 ` Colin Ngam
2003-05-16  0:37 ` Jesse Barnes
2003-05-16  0:48 ` Colin Ngam
2003-05-16  0:59 ` David S. Miller
2003-05-16  1:20 ` Grant Grundler
2003-05-16  1:23 ` David S. Miller
2003-05-16  1:51 ` Grant Grundler
2003-05-16  1:59 ` Colin Ngam
2003-05-16  2:05 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent James Bottomley
2003-05-16  2:08 ` David S. Miller
2003-05-16  2:26 ` James Bottomley
2003-05-16  2:32 ` David S. Miller
2003-05-16  6:47 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Jeremy Higdon
2003-05-16  6:55 ` David S. Miller
2003-05-16  7:15 ` Jeremy Higdon
2003-05-16  7:35 ` Jeremy Higdon
2003-05-16  7:48 ` Jeremy Higdon
2003-05-16  7:53 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-16  8:00 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Jeremy Higdon
2003-05-16 17:36 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent James Bottomley
2003-05-16 17:59 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Grant Grundler
2003-05-16 18:13 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent James Bottomley
2003-05-16 18:18 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Russell King
2003-05-16 18:23 ` Grant Grundler
2003-05-16 18:29 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent James Bottomley
2003-05-16 21:02 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Jes Sorensen
2003-05-16 21:06 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-16 22:39 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Jeremy Higdon
2003-05-16 23:40 ` Jeremy Higdon
2003-05-16 23:53 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-17  4:26 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Grant Grundler
2003-05-17  4:34 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-17 16:44 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Jes Sorensen
2003-05-17 17:06 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Colin Ngam
2003-05-17 18:36 ` James Bottomley
2003-05-17 21:09 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces Russell King
2003-05-17 22:17 ` [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent David S. Miller
2003-05-18 15:53 ` James Bottomley

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