Re: Is the ppc440 "bamboo" board in QEMU still of any use?

[Philippe Mathieu-Daudé]

On 10/14/21 13:29, Cédric Le Goater wrote:
> On 10/14/21 12:34, Christophe Leroy wrote:

>> I have the following change in QEMU to be able to run the bamboo,
>> found it some time ago via google (can't remember where):
>>
>> diff --git a/hw/ppc/ppc4xx_pci.c b/hw/ppc/ppc4xx_pci.c
>> index 8147ba6f94..600e89e791 100644
>> --- a/hw/ppc/ppc4xx_pci.c
>> +++ b/hw/ppc/ppc4xx_pci.c
>> @@ -246,7 +246,7 @@ static int ppc4xx_pci_map_irq(PCIDevice *pci_dev,
>> int irq_num)
>>
>>       trace_ppc4xx_pci_map_irq(pci_dev->devfn, irq_num, slot);
>>
>> -    return slot - 1;
>> +    return slot ? slot - 1 : slot;
>>   }
>>
>>   static void ppc4xx_pci_set_irq(void *opaque, int irq_num, int level)
> 
> could you try to use :
> 
> static inline int ppce500_pci_map_irq_slot(int devno, int irq_num)
> {
>     return (devno + irq_num) % 4;
> }

Is this pci_swizzle()?