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Re: mmap problem

from [Dmitriy Tochansky] [Permanent Link][Original]
To: linux-mips@linux-mips.org
Subject: Re: mmap problem
From: Dmitriy Tochansky <toch@dfpost.ru>
Date: Wed, 8 Dec 2004 10:35:42 +0300
In-reply-to: <BAY15-F22AE91D0812E86B5F51579AFB60@phx.gbl>
Organization: Special Technology Center
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <BAY15-F22AE91D0812E86B5F51579AFB60@phx.gbl>
Sender: linux-mips-bounce@linux-mips.org 
On Wed, 08 Dec 2004 13:28:30 +0600
"Alexey Shinkin" <alexshinkin@hotmail.com> wrote:

> Hi !
> 
> On Au1550 code like yours works
> 
> I use ioremap_nocache(PhysAddr,length)  to get access from kernel
> level.
  Yes, it works. Even just ioremap()
 
> For access from  userland I don't set any vm_flags in drivers' mmap()
> ,
>   vma->vm_flags is set by kernel to  0x40FB (VM_IO is set and
>   VM_LOCKED isn't).
  I tryed it - same result. :(

> 
> And , as Dan said , pci_resource_* functions used for getting valid
> PCI memory address
  Done! :)
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