hw/ide/isa.c

   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)