linux-kernel - Re: Vortex86SX: only works with irqpoll

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Message-Id: <200911241341.11020.jbe@pengutronix.de>
Date:	Tue, 24 Nov 2009 13:41:10 +0100
From:	Juergen Beisert <jbe@...gutronix.de>
To:	linux-kernel@...r.kernel.org
Cc:	Otavio Salvador <otavio@...ystems.com.br>
Subject: Re: Vortex86SX: only works with irqpoll

On Dienstag, 24. November 2009, Otavio Salvador wrote:
> Hello Juergen,
>
> On Tue, Nov 24, 2009 at 9:31 AM, Otavio Salvador
>
> <otavio@...ystems.com.br> wrote:
> > I'll take a look on the dmesg output and see if I see something
> > interesting :-)
>
> In fact I did find some interesting issues. First:
>
> PCI: Probing PCI hardware
> pci 0000:00:07.0: default IRQ router [17f3:6031]
> pci 0000:00:0a.0: BAR 0: address space collision on of device
> [0x0e2000-0x0e2fff]
> pci 0000:00:0a.0: BAR 0: can't allocate resource
> pci 0000:00:0a.1: BAR 0: address space collision on of device
> [0x0e3000-0x0e30ff]
> pci 0000:00:0a.1: BAR 0: can't allocate resource
> pci 0000:00:0b.0: BAR 0: address space collision on of device
> [0x0e0000-0x0e0fff]
> pci 0000:00:0b.0: BAR 0: can't allocate resource
> pci 0000:00:0b.1: BAR 0: address space collision on of device
> [0x0e1000-0x0e10ff]
> pci 0000:00:0b.1: BAR 0: can't allocate resource
> NET: Registered protocol family 2
>
> This is the same collision I have. Another interesting issue is that
> your disk is using the USB bus while mine uses IT821x.

Yes, our system starts from a fixed soldered USB based disk.

> Is your network working? mine does not (inside of Linux but does for
> tftp booting).

Based on a "RDC R6040 Fast Ethernet Adapter" and the kernel states:

[...]
r6040: RDC R6040 NAPI net driver,version 0.24 (08Jul2009)
[...]

Runs with NFS and without any 'irqpoll' trick. (here the modul: 
http://www.ssv-comm.de/en/products/esom2586.php)

jbe

-- 
Pengutronix e.K.                              | Juergen Beisert             |
Linux Solutions for Science and Industry      | Phone: +49-8766-939 228     |
Vertretung Sued/Muenchen, Germany             | Fax:   +49-5121-206917-5555 |
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