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 #include "qemu/osdep.h"
  26 #include <hw/hw.h>
  27 #include <hw/i386/pc.h>
  28 #include <hw/isa/isa.h>
  29 #include "sysemu/block-backend.h"
  30 #include "sysemu/dma.h"
  31
  32 #include <hw/ide/internal.h>
  33
  34 /***********************************************************/
  35 /* ISA IDE definitions */
  36
  37 #define TYPE_ISA_IDE "isa-ide"
  38 #define ISA_IDE(obj) OBJECT_CHECK(ISAIDEState, (obj), TYPE_ISA_IDE)
  39
  40 typedef struct ISAIDEState {
  41     ISADevice parent_obj;
  42
  43     IDEBus    bus;
  44     uint32_t  iobase;
  45     uint32_t  iobase2;
  46     uint32_t  isairq;
  47     qemu_irq  irq;
  48 } ISAIDEState;
  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_new(&s->bus, sizeof(s->bus), dev, 0, 2);
  74     ide_init_ioport(&s->bus, isadev, s->iobase, s->iobase2);
  75     isa_init_irq(isadev, &s->irq, s->isairq);
  76     ide_init2(&s->bus, s->irq);
  77     vmstate_register(dev, 0, &vmstate_ide_isa, s);
  78     ide_register_restart_cb(&s->bus);
  79 }
  80
  81 ISADevice *isa_ide_init(ISABus *bus, int iobase, int iobase2, int isairq,
  82                         DriveInfo *hd0, DriveInfo *hd1)
  83 {
  84     DeviceState *dev;
  85     ISADevice *isadev;
  86     ISAIDEState *s;
  87
  88     isadev = isa_create(bus, TYPE_ISA_IDE);
  89     dev = DEVICE(isadev);
  90     qdev_prop_set_uint32(dev, "iobase",  iobase);
  91     qdev_prop_set_uint32(dev, "iobase2", iobase2);
  92     qdev_prop_set_uint32(dev, "irq",     isairq);
  93     qdev_init_nofail(dev);
  94
  95     s = ISA_IDE(dev);
  96     if (hd0) {
  97         ide_create_drive(&s->bus, 0, hd0);
  98     }
  99     if (hd1) {
 100         ide_create_drive(&s->bus, 1, hd1);
 101     }
 102     return isadev;
 103 }
 104
 105 static Property isa_ide_properties[] = {
 106     DEFINE_PROP_UINT32("iobase",  ISAIDEState, iobase,  0x1f0),
 107     DEFINE_PROP_UINT32("iobase2", ISAIDEState, iobase2, 0x3f6),
 108     DEFINE_PROP_UINT32("irq",    ISAIDEState, isairq,  14),
 109     DEFINE_PROP_END_OF_LIST(),
 110 };
 111
 112 static void isa_ide_class_initfn(ObjectClass *klass, void *data)
 113 {
 114     DeviceClass *dc = DEVICE_CLASS(klass);
 115
 116     dc->realize = isa_ide_realizefn;
 117     dc->fw_name = "ide";
 118     dc->reset = isa_ide_reset;
 119     dc->props = isa_ide_properties;
 120     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 121 }
 122
 123 static const TypeInfo isa_ide_info = {
 124     .name          = TYPE_ISA_IDE,
 125     .parent        = TYPE_ISA_DEVICE,
 126     .instance_size = sizeof(ISAIDEState),
 127     .class_init    = isa_ide_class_initfn,
 128 };
 129
 130 static void isa_ide_register_types(void)
 131 {
 132     type_register_static(&isa_ide_info);
 133 }
 134
 135 type_init(isa_ide_register_types)