103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* isa bus support for qdev.
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*
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* Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hw.h"
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#include "sysemu.h"
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#include "isa.h"
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struct ISABus {
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BusState qbus;
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};
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static ISABus *isabus;
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static struct BusInfo isa_bus_info = {
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.name = "ISA",
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.size = sizeof(ISABus),
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.props = (Property[]) {
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{
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.name = "iobase",
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.info = &qdev_prop_hex32,
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.offset = offsetof(ISADevice, iobase[0]),
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.defval = (uint32_t[]) { -1 },
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},{
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.name = "iobase2",
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.info = &qdev_prop_hex32,
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.offset = offsetof(ISADevice, iobase[1]),
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.defval = (uint32_t[]) { -1 },
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},
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{/* end of list */}
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}
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};
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ISABus *isa_bus_new(DeviceState *dev)
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{
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if (isabus) {
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fprintf(stderr, "Can't create a second ISA bus\n");
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return NULL;
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}
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isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
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return isabus;
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}
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void isa_connect_irq(ISADevice *dev, int n, qemu_irq irq)
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{
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assert(n >= 0 && n < dev->nirqs);
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if (dev->irqs[n])
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*dev->irqs[n] = irq;
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}
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void isa_init_irq(ISADevice *dev, qemu_irq *p)
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{
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assert(dev->nirqs < ARRAY_SIZE(dev->irqs));
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dev->irqs[dev->nirqs] = p;
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dev->nirqs++;
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}
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static void isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
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{
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ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
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ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base);
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info->init(dev);
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}
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void isa_qdev_register(ISADeviceInfo *info)
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{
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info->qdev.init = isa_qdev_init;
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info->qdev.bus_info = &isa_bus_info;
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qdev_register(&info->qdev);
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}
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ISADevice *isa_create_simple(const char *name, uint32_t iobase, uint32_t iobase2)
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{
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DeviceState *dev;
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ISADevice *isa;
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if (!isabus) {
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fprintf(stderr, "Tried to create isa device %s with no isa bus present.\n", name);
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return NULL;
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}
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dev = qdev_create(&isabus->qbus, name);
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isa = DO_UPCAST(ISADevice, qdev, dev);
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isa->iobase[0] = iobase;
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isa->iobase[1] = iobase2;
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qdev_init(dev);
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return isa;
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}
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