Re: [Qemu-devel] eepro100: feature is missing in this emulation: unknown word write

[Stefan Weil <weil@mail.berlios.de>]

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Am 22.03.2011 22:03, schrieb Sébastien BRICE:
> Le 21 mars 2011 22:48, Alex Williamson <alex.williamson@redhat.com 
> <mailto:alex.williamson@redhat.com>> a écrit :
>
>     2011/3/21 Sébastien BRICE <seb@so-sweet.org
>     <mailto:seb@so-sweet.org>>:
>     > Hi everyone
>     >
>     > I have been using qemu-kvm with success the last two years and
>     its really
>     > amazing.
>     > I am new to this mailing list and i am requesting your
>     assistance because i
>     > struggle to have my virtual card working with an 'exotic'
>     virtual System
>     >
>     > seb@debian:~/qemu-kvm-0.14.0$ kvm -net nic,model=i82557b
>     /media/prologue.img
>     >
>     >
>     > Whatever i try the guest system never initializes the Intel 100
>     Pro NIC Card
>     > as it is supposed to do
>     >
>     > And thats almost working with eep100.c source and -net
>     nic,model=i82557b
>     > option
>     > But each time the qemu hangs with:
>     >
>     > eepro100: feature is missing in this emulation: unknown word write
>     ...
>     >     default:
>     >         logout("addr=%s val=0x%04x\n", regname(addr), val);
>     >         missing("unknown word write");
>     >     }
>     > }
>
>     Can you set DEBUG_EEPRO100 in the source file, rebuild and let us know
>     what extra debug output you get?  Just change the #if 0 around the
>     define near the top of the file to #if 1.
>
>     Alex
>
>
> Thx you Alex
> Here is what i have with DEBUG_EEPRO100 set in the eepro100.c source file
>
> seb@debian:~/qemu_building/
> qemu-kvm-0.14.0$ x86_64-softmmu/qemu-system-x86_64 -n 
> nic,model=i82557b prologue.img
>
> /EE100   e100_nic_init
> EE100   e100_pci_reset          0x2b5ba10
> EE100   e100_nic_init           macaddr:  52 54 00 12 34 56
> EE100   nic_reset               0x2b5ba10
> EE100   nic_selective_reset     checksum=0xfd33
> EE100   e100_nic_init           model=i82557b,macaddr=52:54:00:12:34:56
> Warning: vlan 0 is not connected to host network
> EE100   nic_reset               0x2b5ba10
> EE100   nic_selective_reset     checksum=0xfd33
> EE100   pci_mmio_map            region 0, addr=0xf2020000, 
> size=0x00001000, type=8
> EE100   pci_map                 region 1, addr=0x0000c040, 
> size=0x00000040, type=1
> EE100   pci_mmio_map            region 2, addr=0xf2040000, 
> size=0x00020000, type=0
> EE100   eepro100_write2         addr=Port+0 val=0x0000
> EE100   eepro100_write2         addr=Port+0 val=0x0000
> eepro100: feature is missing in this emulation: unknown word write
> EE100   eepro100_write2         addr=Port+2 val=0x0000
> EE100   eepro100_write2         addr=Port+2 val=0x0000
> eepro100: feature is missing in this emulation: unknown word write
> EE100   eepro100_write2         addr=Port+0 val=0x1d01
> EE100   eepro100_write2         addr=Port+0 val=0x1d01
> eepro100: feature is missing in this emulation: unknown word write
> EE100   eepro100_write2         addr=Port+2 val=0x07ff
> EE100   eepro100_write2         addr=Port+2 val=0x07ff
> /
> its not crystal clear for me, do you have any clue to get this working 
> a bit better ?
> thank you for your advices
>
> Seb

The current emulation only supports 32 bit writes to the "port" address.

I'll read the documentation to see how 16 bit writes should be handled
(obviously your image always writes lower and upper half of the 32 bit
value, and for this case, the solution might be simple).

Is prologue.img available online (so I can run your test scenario)?

Regards,
Stefan W.


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