linux-kernel - Re: uio_pci_generic has no mapping?

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Date:	Fri, 14 Jan 2011 10:51:23 +0000
From:	Billy Rafferty <billy.rafferty@...il.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hjk@...sjkoch.de" <hjk@...sjkoch.de>
Subject: Re: uio_pci_generic has no mapping?

Hi Michael,

Thanks for the help and the driver.

Cheers,

Billy

On 14 Jan 2011, at 10:12, "Michael S. Tsirkin" <mst@...hat.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
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