linux-kernel - Re: uio_pci_generic has no mapping?

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Date:	Fri, 14 Jan 2011 12:12:46 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Billy Rafferty <billy.rafferty@...il.com>
Cc:	linux-kernel@...r.kernel.org, hjk@...sjkoch.de
Subject: Re: uio_pci_generic has no mapping?

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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