Re: [Qemu-arm] [Qemu-devel] [PATCH 12/19] hw/core/split-irq: Device that splits IRQ lines

[Richard Henderson]

On 02/20/2018 10:03 AM, Peter Maydell wrote:
> In some board or SoC models it is necessary to split a qemu_irq line
> so that one input can feed multiple outputs.  We currently have
> qemu_irq_split() for this, but that has several deficiencies:
>  * it can only handle splitting a line into two
>  * it unavoidably leaks memory, so it can't be used
>    in a device that can be deleted
> 
> Implement a qdev device that encapsulates splitting of IRQs, with a
> configurable number of outputs.  (This is in some ways the inverse of
> the TYPE_OR_IRQ device.)
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  hw/core/Makefile.objs       |  1 +
>  include/hw/core/split-irq.h | 57 +++++++++++++++++++++++++++++
>  include/hw/irq.h            |  4 +-
>  hw/core/split-irq.c         | 89 
> +++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 150 insertions(+), 1 deletion(-)
>  create mode 100644 include/hw/core/split-irq.h
>  create mode 100644 hw/core/split-irq.c

Reviewed-by: Richard Henderson <address@hidden>


r~