/* * isa bus support for qdev. * * Copyright (c) 2009 Gerd Hoffmann * * 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 . */ #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 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->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)