| /* |
| * 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 = ISA_BUS(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 || 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_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) |
| { |
| 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) |