No PCI memory response

No PCI memory response

[Gill]

Can anyone help?  We're trying to talk to a RealTek RTL8139 device across
the PCI bus, and, although linux can access configuration registers on the
device, it does not access memory space correctly, and we are unable to read
back any sensible values from the RTL8139 registers. 

We are using the latest 2.6 linux on an Alchemy DB1550 board.

Any help would be much appreciated!


Gill

No PCI memory response

[Gill]

Can anyone help?  We're trying to talk to a RealTek RTL8139 device across
the PCI bus, and, although linux can access configuration registers on the
device, it does not access memory space correctly, and we are unable to read
back any sensible values from the RTL8139 registers. 

We are using the latest 2.6 linux on an Alchemy DB1550 board.

Any help would be much appreciated!


Gill

Re: No PCI memory response

[Ulrich Eckhardt]

Gill wrote:
> Can anyone help?  We're trying to talk to a RealTek RTL8139 device across
> the PCI bus, and, although linux can access configuration registers on the
> device, it does not access memory space correctly, and we are unable to
> read back any sensible values from the RTL8139 registers.
>
> We are using the latest 2.6 linux on an Alchemy DB1550 board.

Random reads, discarded data after writing? I had the same problem and solved 
it by simply configuring the static bus controller of my Au1100 properly (of 
which before I didn't even know it existed...).

hth

Uli

RE: No PCI memory response

[Gill Robles-Thome]

Hi -

I'm certainly seeing what looks like random reads...however, is the
static bus controller actually implicated in PCI bus operations?  The
product brief for the Au1100 doesn't mention PCI, so I'm not sure that
we're looking at the same problem.

Thanks,
Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Ulrich Eckhardt
Sent: 04 April 2005 15:53
To: linux-mips@linux-mips.org
Subject: Re: No PCI memory response


Gill wrote:
> Can anyone help?  We're trying to talk to a RealTek RTL8139 device 
> across the PCI bus, and, although linux can access configuration 
> registers on the device, it does not access memory space correctly, 
> and we are unable to read back any sensible values from the RTL8139 
> registers.
>
> We are using the latest 2.6 linux on an Alchemy DB1550 board.

Random reads, discarded data after writing? I had the same problem and
solved 
it by simply configuring the static bus controller of my Au1100 properly
(of 
which before I didn't even know it existed...).

hth

Uli

RE: No PCI memory response

[Gill Robles-Thome]

Hi -

I'm certainly seeing what looks like random reads...however, is the
static bus controller actually implicated in PCI bus operations?  The
product brief for the Au1100 doesn't mention PCI, so I'm not sure that
we're looking at the same problem.

Thanks,
Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Ulrich Eckhardt
Sent: 04 April 2005 15:53
To: linux-mips@linux-mips.org
Subject: Re: No PCI memory response


Gill wrote:
> Can anyone help?  We're trying to talk to a RealTek RTL8139 device 
> across the PCI bus, and, although linux can access configuration 
> registers on the device, it does not access memory space correctly, 
> and we are unable to read back any sensible values from the RTL8139 
> registers.
>
> We are using the latest 2.6 linux on an Alchemy DB1550 board.

Random reads, discarded data after writing? I had the same problem and
solved 
it by simply configuring the static bus controller of my Au1100 properly
(of 
which before I didn't even know it existed...).

hth

Uli

RE: No PCI memory response

[Gill Robles-Thome]

...we found the cause of the problem!  Need to select "Support for
64-bit physical address space" option!

Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Gill Robles-Thome
Sent: 05 April 2005 09:11
To: linux-mips@linux-mips.org
Subject: RE: No PCI memory response


Hi -

I'm certainly seeing what looks like random reads...however, is the
static bus controller actually implicated in PCI bus operations?  The
product brief for the Au1100 doesn't mention PCI, so I'm not sure that
we're looking at the same problem.

Thanks,
Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Ulrich Eckhardt
Sent: 04 April 2005 15:53
To: linux-mips@linux-mips.org
Subject: Re: No PCI memory response


Gill wrote:
> Can anyone help?  We're trying to talk to a RealTek RTL8139 device
> across the PCI bus, and, although linux can access configuration 
> registers on the device, it does not access memory space correctly, 
> and we are unable to read back any sensible values from the RTL8139 
> registers.
>
> We are using the latest 2.6 linux on an Alchemy DB1550 board.

Random reads, discarded data after writing? I had the same problem and
solved 
it by simply configuring the static bus controller of my Au1100 properly
(of 
which before I didn't even know it existed...).

hth

Uli

RE: No PCI memory response

[Gill Robles-Thome]

...we found the cause of the problem!  Need to select "Support for
64-bit physical address space" option!

Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Gill Robles-Thome
Sent: 05 April 2005 09:11
To: linux-mips@linux-mips.org
Subject: RE: No PCI memory response


Hi -

I'm certainly seeing what looks like random reads...however, is the
static bus controller actually implicated in PCI bus operations?  The
product brief for the Au1100 doesn't mention PCI, so I'm not sure that
we're looking at the same problem.

Thanks,
Gill

-----Original Message-----
From: linux-mips-bounce@linux-mips.org
[mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Ulrich Eckhardt
Sent: 04 April 2005 15:53
To: linux-mips@linux-mips.org
Subject: Re: No PCI memory response


Gill wrote:
> Can anyone help?  We're trying to talk to a RealTek RTL8139 device
> across the PCI bus, and, although linux can access configuration 
> registers on the device, it does not access memory space correctly, 
> and we are unable to read back any sensible values from the RTL8139 
> registers.
>
> We are using the latest 2.6 linux on an Alchemy DB1550 board.

Random reads, discarded data after writing? I had the same problem and
solved 
it by simply configuring the static bus controller of my Au1100 properly
(of 
which before I didn't even know it existed...).

hth

Uli

Re: No PCI memory response

[Pete Popov]

Gill Robles-Thome wrote:
> ...we found the cause of the problem!  Need to select "Support for
> 64-bit physical address space" option!

That option should be in the defconfig already - was it not?

I should just hardcode that option and get it over with.

Pete

> 
> Gill
> 
> -----Original Message-----
> From: linux-mips-bounce@linux-mips.org
> [mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Gill Robles-Thome
> Sent: 05 April 2005 09:11
> To: linux-mips@linux-mips.org
> Subject: RE: No PCI memory response
> 
> 
> Hi -
> 
> I'm certainly seeing what looks like random reads...however, is the
> static bus controller actually implicated in PCI bus operations?  The
> product brief for the Au1100 doesn't mention PCI, so I'm not sure that
> we're looking at the same problem.
> 
> Thanks,
> Gill
> 
> -----Original Message-----
> From: linux-mips-bounce@linux-mips.org
> [mailto:linux-mips-bounce@linux-mips.org] On Behalf Of Ulrich Eckhardt
> Sent: 04 April 2005 15:53
> To: linux-mips@linux-mips.org
> Subject: Re: No PCI memory response
> 
> 
> Gill wrote:
> 
>>Can anyone help?  We're trying to talk to a RealTek RTL8139 device
>>across the PCI bus, and, although linux can access configuration 
>>registers on the device, it does not access memory space correctly, 
>>and we are unable to read back any sensible values from the RTL8139 
>>registers.
>>
>>We are using the latest 2.6 linux on an Alchemy DB1550 board.
> 
> 
> Random reads, discarded data after writing? I had the same problem and
> solved 
> it by simply configuring the static bus controller of my Au1100 properly
> (of 
> which before I didn't even know it existed...).
> 
> hth
> 
> Uli
> 
> 
> 
> 
> 
>