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Annotation of qemu/hw/ioapic_common.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  *  IOAPIC emulation logic - common bits of emulated and KVM kernel model
                      3:  *
                      4:  *  Copyright (c) 2004-2005 Fabrice Bellard
                      5:  *  Copyright (c) 2009      Xiantao Zhang, Intel
                      6:  *  Copyright (c) 2011      Jan Kiszka, Siemens AG
                      7:  *
                      8:  * This library is free software; you can redistribute it and/or
                      9:  * modify it under the terms of the GNU Lesser General Public
                     10:  * License as published by the Free Software Foundation; either
                     11:  * version 2 of the License, or (at your option) any later version.
                     12:  *
                     13:  * This library is distributed in the hope that it will be useful,
                     14:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
                     15:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     16:  * Lesser General Public License for more details.
                     17:  *
                     18:  * You should have received a copy of the GNU Lesser General Public
                     19:  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
                     20:  */
                     21: 
                     22: #include "ioapic.h"
                     23: #include "ioapic_internal.h"
                     24: #include "sysbus.h"
                     25: 
                     26: void ioapic_reset_common(DeviceState *dev)
                     27: {
                     28:     IOAPICCommonState *s = IOAPIC_COMMON(dev);
                     29:     int i;
                     30: 
                     31:     s->id = 0;
                     32:     s->ioregsel = 0;
                     33:     s->irr = 0;
                     34:     for (i = 0; i < IOAPIC_NUM_PINS; i++) {
                     35:         s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
                     36:     }
                     37: }
                     38: 
                     39: static void ioapic_dispatch_pre_save(void *opaque)
                     40: {
                     41:     IOAPICCommonState *s = IOAPIC_COMMON(opaque);
                     42:     IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s);
                     43: 
                     44:     if (info->pre_save) {
                     45:         info->pre_save(s);
                     46:     }
                     47: }
                     48: 
                     49: static int ioapic_dispatch_post_load(void *opaque, int version_id)
                     50: {
                     51:     IOAPICCommonState *s = IOAPIC_COMMON(opaque);
                     52:     IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s);
                     53: 
                     54:     if (info->post_load) {
                     55:         info->post_load(s);
                     56:     }
                     57:     return 0;
                     58: }
                     59: 
                     60: static int ioapic_init_common(SysBusDevice *dev)
                     61: {
                     62:     IOAPICCommonState *s = FROM_SYSBUS(IOAPICCommonState, dev);
                     63:     IOAPICCommonClass *info;
                     64:     static int ioapic_no;
                     65: 
                     66:     if (ioapic_no >= MAX_IOAPICS) {
                     67:         return -1;
                     68:     }
                     69: 
                     70:     info = IOAPIC_COMMON_GET_CLASS(s);
                     71:     info->init(s, ioapic_no);
                     72: 
                     73:     sysbus_init_mmio(&s->busdev, &s->io_memory);
                     74:     ioapic_no++;
                     75: 
                     76:     return 0;
                     77: }
                     78: 
                     79: static const VMStateDescription vmstate_ioapic_common = {
                     80:     .name = "ioapic",
                     81:     .version_id = 3,
                     82:     .minimum_version_id = 1,
                     83:     .minimum_version_id_old = 1,
                     84:     .pre_save = ioapic_dispatch_pre_save,
                     85:     .post_load = ioapic_dispatch_post_load,
                     86:     .fields = (VMStateField[]) {
                     87:         VMSTATE_UINT8(id, IOAPICCommonState),
                     88:         VMSTATE_UINT8(ioregsel, IOAPICCommonState),
                     89:         VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */
                     90:         VMSTATE_UINT32_V(irr, IOAPICCommonState, 2),
                     91:         VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICCommonState, IOAPIC_NUM_PINS),
                     92:         VMSTATE_END_OF_LIST()
                     93:     }
                     94: };
                     95: 
                     96: static void ioapic_common_class_init(ObjectClass *klass, void *data)
                     97: {
                     98:     SysBusDeviceClass *sc = SYS_BUS_DEVICE_CLASS(klass);
                     99:     DeviceClass *dc = DEVICE_CLASS(klass);
                    100: 
                    101:     sc->init = ioapic_init_common;
                    102:     dc->vmsd = &vmstate_ioapic_common;
                    103:     dc->no_user = 1;
                    104: }
                    105: 
                    106: static TypeInfo ioapic_common_type = {
                    107:     .name = TYPE_IOAPIC_COMMON,
                    108:     .parent = TYPE_SYS_BUS_DEVICE,
                    109:     .instance_size = sizeof(IOAPICCommonState),
                    110:     .class_size = sizeof(IOAPICCommonClass),
                    111:     .class_init = ioapic_common_class_init,
                    112:     .abstract = true,
                    113: };
                    114: 
                    115: static void register_types(void)
                    116: {
                    117:     type_register_static(&ioapic_common_type);
                    118: }
                    119: 
                    120: type_init(register_types)

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