Am 22.08.2012 14:27, schrieb Julien Grall:
> This function permits to retrieve ISA IO address space.
> It will be usefull when we need to pass IO address space as argument.
>
> Signed-off-by: Julien Grall <julien.gr...@citrix.com>
> ---
> hw/isa-bus.c | 5 +++++
> hw/isa.h | 1 +
> 2 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/hw/isa-bus.c b/hw/isa-bus.c
> index f9b2373..662c86b 100644
> --- a/hw/isa-bus.c
> +++ b/hw/isa-bus.c
> @@ -244,4 +244,9 @@ MemoryRegion *isa_address_space(ISADevice *dev)
> return get_system_memory();
> }
>
> +MemoryRegion *isa_address_space_io(ISADevice *dev)
> +{
> + return get_system_io();
> +}
Unlike the address_space above, there's an address_space_io field in
ISABus, so I guess the implementation of this function should rather
obtain the device's BusState via isa_bus_from_device(dev) and return its
field rather than hardcoding get_system_io() here.
For x86 it shouldn't make a difference but I think on PReP there's two
different runtime-switchable I/O space configurations or so...
Regards,
Andreas
> +
> type_init(isabus_register_types)
> diff --git a/hw/isa.h b/hw/isa.h
> index dc97052..3891c1f 100644
> --- a/hw/isa.h
> +++ b/hw/isa.h
> @@ -43,6 +43,7 @@ void isa_bus_irqs(ISABus *bus, qemu_irq *irqs);
> qemu_irq isa_get_irq(ISADevice *dev, int isairq);
> void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq);
> MemoryRegion *isa_address_space(ISADevice *dev);
> +MemoryRegion *isa_address_space_io(ISADevice *dev);
> ISADevice *isa_create(ISABus *bus, const char *name);
> ISADevice *isa_try_create(ISABus *bus, const char *name);
> ISADevice *isa_create_simple(ISABus *bus, const char *name);
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