1 files changed, 282 insertions, 0 deletions
diff --git a/hw/isa/isa-bus.c b/hw/isa/isa-bus.c
new file mode 100644
index 0000000000..7860b17d66
--- /dev/null
+++ b/hw/isa/isa-bus.c
@@ -0,0 +1,282 @@
+/*
+ * isa bus support for qdev.
+ *
+ * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+#include "hw/hw.h"
+#include "monitor/monitor.h"
+#include "hw/sysbus.h"
+#include "sysemu/sysemu.h"
+#include "hw/isa/isa.h"
+#include "exec/address-spaces.h"
+
+static ISABus *isabus;
+hwaddr isa_mem_base = 0;
+
+static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
+static char *isabus_get_fw_dev_path(DeviceState *dev);
+
+static void isa_bus_class_init(ObjectClass *klass, void *data)
+{
+    BusClass *k = BUS_CLASS(klass);
+
+    k->print_dev = isabus_dev_print;
+    k->get_fw_dev_path = isabus_get_fw_dev_path;
+}
+
+static const TypeInfo isa_bus_info = {
+    .name = TYPE_ISA_BUS,
+    .parent = TYPE_BUS,
+    .instance_size = sizeof(ISABus),
+    .class_init = isa_bus_class_init,
+};
+
+ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
+{
+    if (isabus) {
+        fprintf(stderr, "Can't create a second ISA bus\n");
+        return NULL;
+    }
+    if (NULL == dev) {
+        dev = qdev_create(NULL, "isabus-bridge");
+        qdev_init_nofail(dev);
+    }
+
+    isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL));
+    isabus->address_space_io = address_space_io;
+    return isabus;
+}
+
+void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
+{
+    if (!bus) {
+        hw_error("Can't set isa irqs with no isa bus present.");
+    }
+    bus->irqs = irqs;
+}
+
+/*
+ * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
+ *
+ * This function is only for special cases such as the 'ferr', and
+ * temporary use for normal devices until they are converted to qdev.
+ */
+qemu_irq isa_get_irq(ISADevice *dev, int isairq)
+{
+    assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus);
+    if (isairq < 0 || isairq > 15) {
+        hw_error("isa irq %d invalid", isairq);
+    }
+    return isabus->irqs[isairq];
+}
+
+void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
+{
+    assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
+    dev->isairq[dev->nirqs] = isairq;
+    *p = isa_get_irq(dev, isairq);
+    dev->nirqs++;
+}
+
+static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
+{
+    if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
+        dev->ioport_id = ioport;
+    }
+}
+
+void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
+{
+    memory_region_add_subregion(isabus->address_space_io, start, io);
+    isa_init_ioport(dev, start);
+}
+
+void isa_register_portio_list(ISADevice *dev, uint16_t start,
+                              const MemoryRegionPortio *pio_start,
+                              void *opaque, const char *name)
+{
+    PortioList *piolist = g_new(PortioList, 1);
+
+    /* START is how we should treat DEV, regardless of the actual
+       contents of the portio array.  This is how the old code
+       actually handled e.g. the FDC device.  */
+    isa_init_ioport(dev, start);
+
+    portio_list_init(piolist, pio_start, opaque, name);
+    portio_list_add(piolist, isabus->address_space_io, start);
+}
+
+static int isa_qdev_init(DeviceState *qdev)
+{
+    ISADevice *dev = ISA_DEVICE(qdev);
+    ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev);
+
+    if (klass->init) {
+        return klass->init(dev);
+    }
+
+    return 0;
+}
+
+static void isa_device_init(Object *obj)
+{
+    ISADevice *dev = ISA_DEVICE(obj);
+
+    dev->isairq[0] = -1;
+    dev->isairq[1] = -1;
+}
+
+ISADevice *isa_create(ISABus *bus, const char *name)
+{
+    DeviceState *dev;
+
+    if (!bus) {
+        hw_error("Tried to create isa device %s with no isa bus present.",
+                 name);
+    }
+    dev = qdev_create(&bus->qbus, name);
+    return ISA_DEVICE(dev);
+}
+
+ISADevice *isa_try_create(ISABus *bus, const char *name)
+{
+    DeviceState *dev;
+
+    if (!bus) {
+        hw_error("Tried to create isa device %s with no isa bus present.",
+                 name);
+    }
+    dev = qdev_try_create(&bus->qbus, name);
+    return ISA_DEVICE(dev);
+}
+
+ISADevice *isa_create_simple(ISABus *bus, const char *name)
+{
+    ISADevice *dev;
+
+    dev = isa_create(bus, name);
+    qdev_init_nofail(&dev->qdev);
+    return dev;
+}
+
+ISADevice *isa_vga_init(ISABus *bus)
+{
+    switch (vga_interface_type) {
+    case VGA_CIRRUS:
+        return isa_create_simple(bus, "isa-cirrus-vga");
+    case VGA_QXL:
+        fprintf(stderr, "%s: qxl: no PCI bus\n", __func__);
+        return NULL;
+    case VGA_STD:
+        return isa_create_simple(bus, "isa-vga");
+    case VGA_VMWARE:
+        fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __func__);
+        return NULL;
+    case VGA_NONE:
+    default:
+        return NULL;
+    }
+}
+
+static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
+{
+    ISADevice *d = ISA_DEVICE(dev);
+
+    if (d->isairq[1] != -1) {
+        monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
+                       d->isairq[0], d->isairq[1]);
+    } else if (d->isairq[0] != -1) {
+        monitor_printf(mon, "%*sisa irq %d\n", indent, "",
+                       d->isairq[0]);
+    }
+}
+
+static int isabus_bridge_init(SysBusDevice *dev)
+{
+    /* nothing */
+    return 0;
+}
+
+static void isabus_bridge_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+
+    k->init = isabus_bridge_init;
+    dc->fw_name = "isa";
+    dc->no_user = 1;
+}
+
+static const TypeInfo isabus_bridge_info = {
+    .name          = "isabus-bridge",
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(SysBusDevice),
+    .class_init    = isabus_bridge_class_init,
+};
+
+static void isa_device_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *k = DEVICE_CLASS(klass);
+    k->init = isa_qdev_init;
+    k->bus_type = TYPE_ISA_BUS;
+}
+
+static const TypeInfo isa_device_type_info = {
+    .name = TYPE_ISA_DEVICE,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(ISADevice),
+    .instance_init = isa_device_init,
+    .abstract = true,
+    .class_size = sizeof(ISADeviceClass),
+    .class_init = isa_device_class_init,
+};
+
+static void isabus_register_types(void)
+{
+    type_register_static(&isa_bus_info);
+    type_register_static(&isabus_bridge_info);
+    type_register_static(&isa_device_type_info);
+}
+
+static char *isabus_get_fw_dev_path(DeviceState *dev)
+{
+    ISADevice *d = (ISADevice*)dev;
+    char path[40];
+    int off;
+
+    off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
+    if (d->ioport_id) {
+        snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
+    }
+
+    return g_strdup(path);
+}
+
+MemoryRegion *isa_address_space(ISADevice *dev)
+{
+    return get_system_memory();
+}
+
+MemoryRegion *isa_address_space_io(ISADevice *dev)
+{
+    if (dev) {
+        return isa_bus_from_device(dev)->address_space_io;
+    }
+
+    return isabus->address_space_io;
+}
+
+type_init(isabus_register_types)