--- /dev/null
+/*
+ * 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 "hw/i386/pc.h"
+
+static ISABus *isabus;
+
+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,
+ MemoryRegion *address_space_io)
+{
+ if (isabus) {
+ fprintf(stderr, "Can't create a second ISA bus\n");
+ return NULL;
+ }
+ if (!dev) {
+ dev = qdev_create(NULL, "isabus-bridge");
+ qdev_init_nofail(dev);
+ }
+
+ isabus = ISA_BUS(qbus_create(TYPE_ISA_BUS, dev, NULL));
+ isabus->address_space = address_space;
+ 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 || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == 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;
+
+ /* 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);
+
+ /* FIXME: the device should store created PortioList in its state. Note
+ that DEV can be NULL here and that single device can register several
+ portio lists. Current implementation is leaking memory allocated
+ in portio_list_init. The leak is not critical because it happens only
+ at initialization time. */
+ portio_list_init(&piolist, OBJECT(dev), pio_start, opaque, name);
+ portio_list_add(&piolist, isabus->address_space_io, start);
+}
+
+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(bus), 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(bus), name);
+ return ISA_DEVICE(dev);
+}
+
+ISADevice *isa_create_simple(ISABus *bus, const char *name)
+{
+ ISADevice *dev;
+
+ dev = isa_create(bus, name);
+ qdev_init_nofail(DEVICE(dev));
+ 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_VIRTIO:
+ fprintf(stderr, "%s: virtio-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 void isabus_bridge_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->fw_name = "isa";
+}
+
+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->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 = ISA_DEVICE(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)
+{
+ if (dev) {
+ return isa_bus_from_device(dev)->address_space;
+ }
+
+ return isabus->address_space;
+}
+
+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)
+
+static void parallel_init(ISABus *bus, int index, CharDriverState *chr)
+{
+ DeviceState *dev;
+ ISADevice *isadev;
+
+ isadev = isa_create(bus, "isa-parallel");
+ dev = DEVICE(isadev);
+ qdev_prop_set_uint32(dev, "index", index);
+ qdev_prop_set_chr(dev, "chardev", chr);
+ qdev_init_nofail(dev);
+}
+
+void parallel_hds_isa_init(ISABus *bus, int n)
+{
+ int i;
+
+ assert(n <= MAX_PARALLEL_PORTS);
+
+ for (i = 0; i < n; i++) {
+ if (parallel_hds[i]) {
+ parallel_init(bus, i, parallel_hds[i]);
+ }
+ }
+}
Code Review / kvmfornfv.git / blobdiff