[Qemu-devel] Create Fake PCI Cards

[Qemu-devel] Create Fake PCI Cards

[Clemens Kolbitsch]

Hi everyone!
I've read some posts in the qemu-mailinglist archives about the idea of 
a pci-proxy (allowing the client-os to access the host-os-pci devices) 
and the problems related to that.

now, I want to make something similar and wonder if there is already 
some source code that does all that already (because a big part of it 
might exist in the proxy mentioned or even in the standard 
qemu-ethernet-device):

I want to create a "fake"/virtual pci device that only exists in the vm. 
so basically it boils down to adding a new (wireless) device that is not 
connected to anything and that i can write data to/read data from the 
device driver runnnig inside of qemu.

Any help would be greatly appreciated!
Clemens

Re: [Qemu-devel] Create Fake PCI Cards

[Paul Brook]

> I want to create a "fake"/virtual pci device that only exists in the vm.
> so basically it boils down to adding a new (wireless) device that is not
> connected to anything and that i can write data to/read data from the
> device driver runnnig inside of qemu.

Qemu already has many emulated PCI devices. Look at those.

Paul

Re: [Qemu-devel] Create Fake PCI Cards

[Stefan Weil]

If you need a wireless PCI device, I can provide code for
TNETW1130 (ACX111). Get it from
http://svn.berlios.de/svnroot/repos/ar7-firmware/qemu/trunk/hw/tnetw1130.c

It works partially with an emulated Linux 2.6.20:
the PCI card is recognized, and it loads firmware.

Stefan

Clemens Kolbitsch schrieb:
> Hi everyone!
> I've read some posts in the qemu-mailinglist archives about the idea
> of a pci-proxy (allowing the client-os to access the host-os-pci
> devices) and the problems related to that.
>
> now, I want to make something similar and wonder if there is already
> some source code that does all that already (because a big part of it
> might exist in the proxy mentioned or even in the standard
> qemu-ethernet-device):
>
> I want to create a "fake"/virtual pci device that only exists in the
> vm. so basically it boils down to adding a new (wireless) device that
> is not connected to anything and that i can write data to/read data
> from the device driver runnnig inside of qemu.
>
> Any help would be greatly appreciated!
> Clemens

Re: [Qemu-devel] Create Fake PCI Cards

[Clemens Kolbitsch]

Paul Brook wrote:
>> I want to create a "fake"/virtual pci device that only exists in the vm.
>> so basically it boils down to adding a new (wireless) device that is not
>> connected to anything and that i can write data to/read data from the
>> device driver runnnig inside of qemu.
>>     
>
> Qemu already has many emulated PCI devices. Look at those.
>
> Paul
>   
yeah... to be honest, i postet the message about 2 mins too early. right 
afterwards i found the pci-proxy and similar things and started to 
understand the code-flow

what i'm trying to do now is to make this fake wireless device. however, 
i originally wanted to write an virtual driver for an atheros chipset, 
but the hardware-access layer is not open-source.

so, does anyone know of a chip that is used regurarly and that has an 
open-source hal?

thanks!!

Re: [Qemu-devel] Create Fake PCI Cards

[Clemens Kolbitsch]

> If you need a wireless PCI device, I can provide code for
> TNETW1130 (ACX111). Get it from
> http://svn.berlios.de/svnroot/repos/ar7-firmware/qemu/trunk/hw/tnetw1130.c
>
> It works partially with an emulated Linux 2.6.20:
> the PCI card is recognized, and it loads firmware.
>
> Stefan
>   
hi!
did you ever get it to work in qemu? by now, i've tried about a dozen 
drivers both in win xp and linux (kubuntu with ndiswrapper), but no success.

win xp first only saw an unknown ethernet card. then i forced it to use 
dlink dwl-520(+), texas instruments/us robotics drivers but only get a 
problem when installing "hardware could not be started"

linux's lspci says that it is a texas instruments ACX111 - so that is 
good. but without a working winxp driver, i don't think i'll ever get 
ndiswrapper working (by the way... yes, i need ndiswrapper and not an 
linux-original driver.. but since i have to get it to work in winxp as 
well, the linux-part should not be a problem afterwards :-)  )

did you ever get further??
thanks!!