From patchwork Mon Jun 6 16:20:50 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [RFC,01/10] isa: Allow to un-assign I/O ports Date: Mon, 06 Jun 2011 06:20:50 -0000 From: =?utf-8?q?Andreas_F=C3=A4rber?= X-Patchwork-Id: 98989 Message-Id: <1307377259-41434-2-git-send-email-andreas.faerber@web.de> To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Andreas=20F=C3=A4rber?= , hpoussin@reactos.org, kraxel@redhat.com Signed-off-by: Andreas Färber --- 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 2765543..46716ad 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; + } + } +} + static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base) { ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev); diff --git a/hw/isa.h b/hw/isa.h index d2b6126..1b41a27 100644 --- a/hw/isa.h +++ b/hw/isa.h @@ -30,6 +30,7 @@ qemu_irq isa_get_irq(int isairq); void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq); void isa_init_ioport(ISADevice *dev, uint16_t ioport); void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length); +void isa_discard_ioport_range(ISADevice *dev, uint16_t start, uint16_t length); void isa_qdev_register(ISADeviceInfo *info); ISADevice *isa_create(const char *name); ISADevice *isa_try_create(const char *name);