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/isa.h"
  35 #include "hw/ide/internal.h"
  36 #include "qom/object.h"
  37
  38 /***********************************************************/
  39 /* ISA IDE definitions */
  40
  41 struct ISAIDEState {
  42     ISADevice parent_obj;
  43
  44     IDEBus    bus;
  45     uint32_t  iobase;
  46     uint32_t  iobase2;
  47     uint32_t  irqnum;
  48 };
  49
  50 static void isa_ide_reset(DeviceState *d)
  51 {
  52     ISAIDEState *s = ISA_IDE(d);
  53
  54     ide_bus_reset(&s->bus);
  55 }
  56
  57 static const VMStateDescription vmstate_ide_isa = {
  58     .name = "isa-ide",
  59     .version_id = 3,
  60     .minimum_version_id = 0,
  61     .fields = (VMStateField[]) {
  62         VMSTATE_IDE_BUS(bus, ISAIDEState),
  63         VMSTATE_IDE_DRIVES(bus.ifs, ISAIDEState),
  64         VMSTATE_END_OF_LIST()
  65     }
  66 };
  67
  68 static void isa_ide_realizefn(DeviceState *dev, Error **errp)
  69 {
  70     ISADevice *isadev = ISA_DEVICE(dev);
  71     ISAIDEState *s = ISA_IDE(dev);
  72
  73     ide_bus_init(&s->bus, sizeof(s->bus), dev, 0, 2);
  74     ide_init_ioport(&s->bus, isadev, s->iobase, s->iobase2);
  75     ide_bus_init_output_irq(&s->bus, isa_get_irq(isadev, s->irqnum));
  76     vmstate_register(VMSTATE_IF(dev), 0, &vmstate_ide_isa, s);
  77     ide_bus_register_restart_cb(&s->bus);
  78 }
  79
  80 ISADevice *isa_ide_init(ISABus *bus, int iobase, int iobase2, int irqnum,
  81                         DriveInfo *hd0, DriveInfo *hd1)
  82 {
  83     DeviceState *dev;
  84     ISADevice *isadev;
  85     ISAIDEState *s;
  86
  87     isadev = isa_new(TYPE_ISA_IDE);
  88     dev = DEVICE(isadev);
  89     qdev_prop_set_uint32(dev, "iobase",  iobase);
  90     qdev_prop_set_uint32(dev, "iobase2", iobase2);
  91     qdev_prop_set_uint32(dev, "irq",     irqnum);
  92     isa_realize_and_unref(isadev, bus, &error_fatal);
  93
  94     s = ISA_IDE(dev);
  95     if (hd0) {
  96         ide_bus_create_drive(&s->bus, 0, hd0);
  97     }
  98     if (hd1) {
  99         ide_bus_create_drive(&s->bus, 1, hd1);
 100     }
 101     return isadev;
 102 }
 103
 104 static Property isa_ide_properties[] = {
 105     DEFINE_PROP_UINT32("iobase",  ISAIDEState, iobase,  0x1f0),
 106     DEFINE_PROP_UINT32("iobase2", ISAIDEState, iobase2, 0x3f6),
 107     DEFINE_PROP_UINT32("irq",     ISAIDEState, irqnum,  14),
 108     DEFINE_PROP_END_OF_LIST(),
 109 };
 110
 111 static void isa_ide_class_initfn(ObjectClass *klass, void *data)
 112 {
 113     DeviceClass *dc = DEVICE_CLASS(klass);
 114
 115     dc->realize = isa_ide_realizefn;
 116     dc->fw_name = "ide";
 117     dc->reset = isa_ide_reset;
 118     device_class_set_props(dc, isa_ide_properties);
 119     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 120 }
 121
 122 static const TypeInfo isa_ide_info = {
 123     .name          = TYPE_ISA_IDE,
 124     .parent        = TYPE_ISA_DEVICE,
 125     .instance_size = sizeof(ISAIDEState),
 126     .class_init    = isa_ide_class_initfn,
 127 };
 128
 129 static void isa_ide_register_types(void)
 130 {
 131     type_register_static(&isa_ide_info);
 132 }
 133
 134 type_init(isa_ide_register_types)