* uio_pci_generic has no mapping?
@ 2011-01-14 9:52 Billy Rafferty
2011-01-14 10:12 ` Michael S. Tsirkin
0 siblings, 1 reply; 3+ messages in thread
From: Billy Rafferty @ 2011-01-14 9:52 UTC (permalink / raw)
To: linux-kernel; +Cc: mst, hjk
Hi there,
I was hoping that someone might be be able to help me out using the
uio_pci_generic driver.
To gain access to the memory in the card I try to do an mmap but it
returns an error.
I was wondering if the mapping of the PCI memory regions is automatic?
I am not seeing /sys/class/uio/uio0/maps
Do I have to do something to get these to appear?
I would appreciate any help or pointers that you can give.
Regards,
Billy
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: uio_pci_generic has no mapping?
2011-01-14 9:52 uio_pci_generic has no mapping? Billy Rafferty
@ 2011-01-14 10:12 ` Michael S. Tsirkin
2011-01-14 10:51 ` Billy Rafferty
0 siblings, 1 reply; 3+ messages in thread
From: Michael S. Tsirkin @ 2011-01-14 10:12 UTC (permalink / raw)
To: Billy Rafferty; +Cc: linux-kernel, hjk
On Fri, Jan 14, 2011 at 09:52:45AM +0000, Billy Rafferty wrote:
> Hi there,
>
> I was hoping that someone might be be able to help me out using the
> uio_pci_generic driver.
>
> To gain access to the memory in the card I try to do an mmap but it
> returns an error.
>
> I was wondering if the mapping of the PCI memory regions is automatic?
> I am not seeing /sys/class/uio/uio0/maps
>
> Do I have to do something to get these to appear?
>
> I would appreciate any help or pointers that you can give.
>
> Regards,
>
> Billy
mmap the pci resource through
/sys/class/uio/uio0/device/resourceX
The list of resources is in
/sys/class/uio/uio0/device/resource
--
MST
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: uio_pci_generic has no mapping?
2011-01-14 10:12 ` Michael S. Tsirkin
@ 2011-01-14 10:51 ` Billy Rafferty
0 siblings, 0 replies; 3+ messages in thread
From: Billy Rafferty @ 2011-01-14 10:51 UTC (permalink / raw)
To: Michael S. Tsirkin; +Cc: linux-kernel@vger.kernel.org, hjk@hansjkoch.de
Hi Michael,
Thanks for the help and the driver.
Cheers,
Billy
On 14 Jan 2011, at 10:12, "Michael S. Tsirkin" <mst@redhat.com> wrote:
> On Fri, Jan 14, 2011 at 09:52:45AM +0000, Billy Rafferty wrote:
>> Hi there,
>>
>> I was hoping that someone might be be able to help me out using the
>> uio_pci_generic driver.
>>
>> To gain access to the memory in the card I try to do an mmap but it
>> returns an error.
>>
>> I was wondering if the mapping of the PCI memory regions is automatic?
>> I am not seeing /sys/class/uio/uio0/maps
>>
>> Do I have to do something to get these to appear?
>>
>> I would appreciate any help or pointers that you can give.
>>
>> Regards,
>>
>> Billy
>
> mmap the pci resource through
> /sys/class/uio/uio0/device/resourceX
>
> The list of resources is in
> /sys/class/uio/uio0/device/resource
>
> --
> MST
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-01-14 10:48 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-01-14 9:52 uio_pci_generic has no mapping? Billy Rafferty
2011-01-14 10:12 ` Michael S. Tsirkin
2011-01-14 10:51 ` Billy Rafferty
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox