qemu

FORK: QEMU emulator
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isa.c (4142B)

      1 /*
      2  * QEMU IDE Emulation: ISA Bus support.
      3  *
      4  * Copyright (c) 2003 Fabrice Bellard
      5  * Copyright (c) 2006 Openedhand Ltd.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a copy
      8  * of this software and associated documentation files (the "Software"), to deal
      9  * in the Software without restriction, including without limitation the rights
     10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11  * copies of the Software, and to permit persons to whom the Software is
     12  * furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included in
     15  * all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     23  * THE SOFTWARE.
     24  */
     25 
     26 #include "qemu/osdep.h"
     27 #include "hw/isa/isa.h"
     28 #include "hw/qdev-properties.h"
     29 #include "migration/vmstate.h"
     30 #include "qapi/error.h"
     31 #include "qemu/module.h"
     32 #include "sysemu/dma.h"
     33 
     34 #include "hw/ide/internal.h"
     35 #include "qom/object.h"
     36 
     37 /***********************************************************/
     38 /* ISA IDE definitions */
     39 
     40 #define TYPE_ISA_IDE "isa-ide"
     41 OBJECT_DECLARE_SIMPLE_TYPE(ISAIDEState, ISA_IDE)
     42 
     43 struct ISAIDEState {
     44     ISADevice parent_obj;
     45 
     46     IDEBus    bus;
     47     uint32_t  iobase;
     48     uint32_t  iobase2;
     49     uint32_t  isairq;
     50     qemu_irq  irq;
     51 };
     52 
     53 static void isa_ide_reset(DeviceState *d)
     54 {
     55     ISAIDEState *s = ISA_IDE(d);
     56 
     57     ide_bus_reset(&s->bus);
     58 }
     59 
     60 static const VMStateDescription vmstate_ide_isa = {
     61     .name = "isa-ide",
     62     .version_id = 3,
     63     .minimum_version_id = 0,
     64     .fields = (VMStateField[]) {
     65         VMSTATE_IDE_BUS(bus, ISAIDEState),
     66         VMSTATE_IDE_DRIVES(bus.ifs, ISAIDEState),
     67         VMSTATE_END_OF_LIST()
     68     }
     69 };
     70 
     71 static void isa_ide_realizefn(DeviceState *dev, Error **errp)
     72 {
     73     ISADevice *isadev = ISA_DEVICE(dev);
     74     ISAIDEState *s = ISA_IDE(dev);
     75 
     76     ide_bus_init(&s->bus, sizeof(s->bus), dev, 0, 2);
     77     ide_init_ioport(&s->bus, isadev, s->iobase, s->iobase2);
     78     s->irq = isa_get_irq(isadev, s->isairq);
     79     ide_init2(&s->bus, s->irq);
     80     vmstate_register(VMSTATE_IF(dev), 0, &vmstate_ide_isa, s);
     81     ide_register_restart_cb(&s->bus);
     82 }
     83 
     84 ISADevice *isa_ide_init(ISABus *bus, int iobase, int iobase2, int isairq,
     85                         DriveInfo *hd0, DriveInfo *hd1)
     86 {
     87     DeviceState *dev;
     88     ISADevice *isadev;
     89     ISAIDEState *s;
     90 
     91     isadev = isa_new(TYPE_ISA_IDE);
     92     dev = DEVICE(isadev);
     93     qdev_prop_set_uint32(dev, "iobase",  iobase);
     94     qdev_prop_set_uint32(dev, "iobase2", iobase2);
     95     qdev_prop_set_uint32(dev, "irq",     isairq);
     96     isa_realize_and_unref(isadev, bus, &error_fatal);
     97 
     98     s = ISA_IDE(dev);
     99     if (hd0) {
    100         ide_create_drive(&s->bus, 0, hd0);
    101     }
    102     if (hd1) {
    103         ide_create_drive(&s->bus, 1, hd1);
    104     }
    105     return isadev;
    106 }
    107 
    108 static Property isa_ide_properties[] = {
    109     DEFINE_PROP_UINT32("iobase",  ISAIDEState, iobase,  0x1f0),
    110     DEFINE_PROP_UINT32("iobase2", ISAIDEState, iobase2, 0x3f6),
    111     DEFINE_PROP_UINT32("irq",    ISAIDEState, isairq,  14),
    112     DEFINE_PROP_END_OF_LIST(),
    113 };
    114 
    115 static void isa_ide_class_initfn(ObjectClass *klass, void *data)
    116 {
    117     DeviceClass *dc = DEVICE_CLASS(klass);
    118 
    119     dc->realize = isa_ide_realizefn;
    120     dc->fw_name = "ide";
    121     dc->reset = isa_ide_reset;
    122     device_class_set_props(dc, isa_ide_properties);
    123     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
    124 }
    125 
    126 static const TypeInfo isa_ide_info = {
    127     .name          = TYPE_ISA_IDE,
    128     .parent        = TYPE_ISA_DEVICE,
    129     .instance_size = sizeof(ISAIDEState),
    130     .class_init    = isa_ide_class_initfn,
    131 };
    132 
    133 static void isa_ide_register_types(void)
    134 {
    135     type_register_static(&isa_ide_info);
    136 }
    137 
    138 type_init(isa_ide_register_types)