Re: [Qemu-devel] [PATCH v2 01/10] prep: kill get_system_io() usage

[Paolo Bonzini]

Il 04/09/2013 00:29, Hervé Poussineau ha scritto:
> While ISA address space in prep machine is currently the one returned
> by get_system_io(), this depends of the implementation of i82378/raven
> devices, and this may not be the case forever.
> 
> Use the right ISA address space when adding some more ports to it.
> We can use whatever ISA device on the right ISA bus, as all ISA devices
> on the same ISA bus share the same ISA address space.
> 
> Signed-off-by: Hervé Poussineau <address@hidden>
> ---
>  hw/ppc/prep.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
> index 7e04b1a..efc892d 100644
> --- a/hw/ppc/prep.c
> +++ b/hw/ppc/prep.c
> @@ -656,7 +656,7 @@ static void ppc_prep_init(QEMUMachineInitArgs *args)
>      sysctrl->reset_irq = cpu->env.irq_inputs[PPC6xx_INPUT_HRESET];
>  
>      portio_list_init(port_list, NULL, prep_portio_list, sysctrl, "prep");
> -    portio_list_add(port_list, get_system_io(), 0x0);
> +    portio_list_add(port_list, isa_address_space_io(isa), 0x0);
>  
>      /* PowerPC control and status register group */
>  #if 0
> 

Should it be instead the I/O address space of the Raven instead
(pci_bus->address_space_io, or alternatively you could add a new
function)?  Or if you make it the ISA address space, should this be a
new, full-blown ISA device?

Paolo