lkml.org 
[lkml]   [2006]   [Nov]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: mmaping a kernel buffer to user space


Russell King wrote:
> On Wed, Nov 01, 2006 at 01:58:17PM +0100, Guillermo Marcus Martinez wrote:
>> My suggestion would be to add two functions: pci_map_consistent() and
>> dma_map_coherent() to address this issue, and their corresponding
>> unmap's. That will make sure all that is needed is done, is a clean and
>> consistent with the pci_ and dma_ APIs, and fills a mmap requirement not
>> covered by the other functions.
>
> You might want to look through include/asm-arm/dma-mapping.h to see if
> an architecture already has considered that and the interface they
> implemented.
>

Nice! Thanks. I think the issue of mapping a coherent area to user space
is fairly general. Should not this be promoted to be part of the general
dma-api? (that is, not a platform specific function)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-02 12:35    [from the cache]
©2003-2011 Jasper Spaans