2 * System (CPU) Bus device support code
4 * Copyright (c) 2009 CodeSourcery
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
29 void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
31 assert(n >= 0 && n < dev->num_irq);
38 void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr)
40 assert(n >= 0 && n < dev->num_mmio);
42 if (dev->mmio[n].addr == addr) {
43 /* ??? region already mapped here. */
46 if (dev->mmio[n].addr != (target_phys_addr_t)-1) {
47 /* Unregister previous mapping. */
48 cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size,
51 dev->mmio[n].addr = addr;
52 if (dev->mmio[n].cb) {
53 dev->mmio[n].cb(dev, addr);
55 cpu_register_physical_memory(addr, dev->mmio[n].size,
61 /* Request an IRQ source. The actual IRQ object may be populated later. */
62 void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
66 assert(dev->num_irq < QDEV_MAX_IRQ);
71 /* Pass IRQs from a target device. */
72 void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
75 assert(dev->num_irq == 0);
76 dev->num_irq = target->num_irq;
77 for (i = 0; i < dev->num_irq; i++) {
78 dev->irqp[i] = target->irqp[i];
82 void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, int iofunc)
86 assert(dev->num_mmio < QDEV_MAX_MMIO);
88 dev->mmio[n].addr = -1;
89 dev->mmio[n].size = size;
90 dev->mmio[n].iofunc = iofunc;
93 void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
98 assert(dev->num_mmio < QDEV_MAX_MMIO);
100 dev->mmio[n].addr = -1;
101 dev->mmio[n].size = size;
102 dev->mmio[n].cb = cb;
105 static void sysbus_device_init(DeviceState *dev, DeviceInfo *base)
107 SysBusDeviceInfo *info = container_of(base, SysBusDeviceInfo, qdev);
109 info->init(sysbus_from_qdev(dev));
112 void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init)
114 SysBusDeviceInfo *info;
116 info = qemu_mallocz(sizeof(*info));
118 info->qdev.init = sysbus_device_init;
119 info->qdev.bus_type = BUS_TYPE_SYSTEM;
121 assert(size >= sizeof(SysBusDevice));
122 qdev_register(name, size, &info->qdev);
125 DeviceState *sysbus_create_varargs(const char *name,
126 target_phys_addr_t addr, ...)
134 dev = qdev_create(NULL, name);
135 s = sysbus_from_qdev(dev);
137 if (addr != (target_phys_addr_t)-1) {
138 sysbus_mmio_map(s, 0, addr);
143 irq = va_arg(va, qemu_irq);
147 sysbus_connect_irq(s, n, irq);