On Tue, Jan 12, 2010 at 8:34 PM, Alexander Graf <ag...@suse.de> wrote:
>
> On 12.01.2010, at 20:45, Blue Swirl wrote:
>
>> On Tue, Jan 12, 2010 at 11:58 AM, Alexander Graf <ag...@suse.de> wrote:
>>> I'm trying to get the PPC64 system emulation target working finally.
>>> While doing so, I ran into several issues, all related to PCI this time.
>>>
>>> This patchset fixes all the PCI config space access and PCI interrupt
>>> mapping issues I've found on PPC64. Using this and a patched OpenBIOS
>>> version, I can successfully access IDE devices and was booting a guest
>>> into the shell from IDE using serial console.
>>>
>>> To leverage this patch, you also need a few patches to OpenBIOS. I'll
>>> present them to the OpenBIOS list, but in general getting patches into
>>> Qemu is harder than getting them into OpenBIOS. So I want to wait for
>>> the review process here first.
>>>
>>> Find the OpenBIOS patch at: http://alex.csgraf.de/openbios-ppc-u3.patch
>>
>> About the OpenBIOS patch, could you move the PCI_INT_MAP defines to a
>> PPC-specific header and make pci_host_set_interrupt_map() contents
>> surrounded by #ifdef CONFIG_PPC (to make it empty function for other
>> arches)?
>
> Well, other archs should be able to use the same code. If OpenBIOS knows how
> interrupts work for a particular device, it really should tell the OS about
> it too IMHO.
I'm not so sure. Here's an example of a Sparc64 interrupt-map:
Node 0xf005f9d4
bus-range: 00000001.00000001
scsi-initiator-id: 00000007
compatible: 70636931.3038652c.35303030.00706369
66mhz-capable:
fast-back-to-back:
devsel-speed: 00000001
class-code: 00060400
revision-id: 00000011
device-id: 00005000
vendor-id: 0000108e
interrupt-map:
00010800.00000000.00000000.00000001.f005f1e0.00000021.00011000.00000000.00000000.00000001.f005f1e0.0000000f.00011800.00000000.00000000.00000001.f005f1e0.00000020
interrupt-map-mask: 00fff800.00000000.00000000.00000007
#interrupt-cells: 00000001
slot-names: 00000000
no-probe-list: '0'
clock-frequency: 01f78a40
model: 'SUNW,simba'
#address-cells: 00000003
#size-cells: 00000002
reg: 00000900.00000000.00000000.00000000.00000000
device_type: 'pci'
name: 'pci'
