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Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports |
Date: |
Thu, 09 Jun 2011 17:03:09 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
Andreas Färber <address@hidden> writes:
> Signed-off-by: Andreas Färber <address@hidden>
> ---
> hw/isa-bus.c | 14 ++++++++++++++
> hw/isa.h | 1 +
> 2 files changed, 15 insertions(+), 0 deletions(-)
>
> diff --git a/hw/isa-bus.c b/hw/isa-bus.c
> index d258932..1f64673 100644
> --- a/hw/isa-bus.c
> +++ b/hw/isa-bus.c
> @@ -105,6 +105,20 @@ void isa_init_ioport(ISADevice *dev, uint16_t ioport)
> isa_init_ioport_range(dev, ioport, 1);
> }
>
> +void isa_discard_ioport_range(ISADevice *dev, uint16_t start, uint16_t
> length)
> +{
> + int i, j;
> + for (i = 0; i < dev->nioports; i++) {
> + if (dev->ioports[i] == start) {
> + for (j = 0; j < dev->nioports - i; j++) {
> + dev->ioports[i + j] = dev->ioports[i + length + j];
> + }
> + dev->nioports -= length;
> + break;
> + }
> + }
> +}
> +
"discard"? It's the opposite of isa_init_ioport_range(), name should
make that obvious. "uninit"?
Note: this only affects the I/O-port bookkeeping within ISADevice, not
the actual I/O port handler registration. Any use must be accompanied
by a matching handler de-registration. Just like any use of
isa_init_ioport_range() must be accompanied by matching
register_ioport_FOO()s. You can thank Gleb for this mess.
[...]
- [Qemu-devel] [RFC v4 10/12] ide: Allow to discard I/O ports, (continued)
- Re: [Qemu-devel] [RFC v4 09/12] fdc: Implement ISA set_state() callback, Gerd Hoffmann, 2011/06/09
- Re: [Qemu-devel] [RFC v4 09/12] fdc: Implement ISA set_state() callback, Andreas Färber, 2011/06/09
- Re: [Qemu-devel] [RFC v4 07/12] serial: Implement ISA set_state() callback, Markus Armbruster, 2011/06/09
- Re: [Qemu-devel] [RFC v4 07/12] serial: Implement ISA set_state() callback, Andreas Färber, 2011/06/09
- Re: [Qemu-devel] [RFC v4 05/12] isa: Allow to un-associate an IRQ, Markus Armbruster, 2011/06/09
- Re: [Qemu-devel] [RFC v4 05/12] isa: Allow to un-associate an IRQ, Markus Armbruster, 2011/06/09
- Re: [Qemu-devel] [RFC v4 05/12] isa: Allow to un-associate an IRQ, Andreas Färber, 2011/06/12
- Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports,
Markus Armbruster <=
- Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports, Andreas Färber, 2011/06/12
- Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports, Gleb Natapov, 2011/06/12
- Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports, Andreas Färber, 2011/06/12
- Re: [Qemu-devel] [RFC v4 04/12] isa: Allow to un-assign I/O ports, Gleb Natapov, 2011/06/12
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Gerd Hoffmann, 2011/06/09
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Andreas Färber, 2011/06/09
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Gerd Hoffmann, 2011/06/09
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Andreas Färber, 2011/06/09
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Gerd Hoffmann, 2011/06/09
- Re: [Qemu-devel] [RFC v4 03/12] isa: Provide set_state callback, Markus Armbruster, 2011/06/09