Re: [PATCH v3 34/43] hw/intc: Add LoongArch extioi interrupt controller(EIOINTC)

[maobibo]

在 2022/5/10 11:56, Richard Henderson 写道:
> On 5/9/22 19:54, maobibo wrote:
>> how about put address_space_iocsr as board rather than percpu since there is 
>> no concept
>> of "cpu package".
> 
> "cpu package" works ok as a device on the board.
> 
> I don't know if it's possible to have the iocsr address space controlled by 
> the device, especially since it appears that the iocsr address space is 
> *also* available -- or at least partially available -- in the main address 
> space at base 0x1fe00000?

In the current hw implementation, iocsr/mmio address space can both be used for 
IPI/EXTIOI, in future mmio address space will be deprecated and removed, only 
iocsr will be used since it is easy for hw to abstract the interface.

In the next patch, main address space at base 0x1fe00000 for IPI/EXTIOI will be 
removed and only iocsr address space will be used. And iocsr address space can 
controlled by device also.
> 
> 
> r~