LXR qemu/hw/block/fdc-sysbus.c

   1/*
   2 * QEMU Floppy disk emulator (Intel 82078)
   3 *
   4 * Copyright (c) 2003, 2007 Jocelyn Mayer
   5 * Copyright (c) 2008 Hervé Poussineau
   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 "qapi/error.h"
  28#include "qom/object.h"
  29#include "hw/sysbus.h"
  30#include "hw/block/fdc.h"
  31#include "migration/vmstate.h"
  32#include "fdc-internal.h"
  33#include "trace.h"
  34
  35#define TYPE_SYSBUS_FDC "base-sysbus-fdc"
  36typedef struct FDCtrlSysBusClass FDCtrlSysBusClass;
  37typedef struct FDCtrlSysBus FDCtrlSysBus;
  38DECLARE_OBJ_CHECKERS(FDCtrlSysBus, FDCtrlSysBusClass,
  39                     SYSBUS_FDC, TYPE_SYSBUS_FDC)
  40
  41struct FDCtrlSysBusClass {
  42    /*< private >*/
  43    SysBusDeviceClass parent_class;
  44    /*< public >*/
  45
  46    bool use_strict_io;
  47};
  48
  49struct FDCtrlSysBus {
  50    /*< private >*/
  51    SysBusDevice parent_obj;
  52    /*< public >*/
  53
  54    struct FDCtrl state;
  55};
  56
  57static uint64_t fdctrl_read_mem(void *opaque, hwaddr reg, unsigned ize)
  58{
  59    return fdctrl_read(opaque, (uint32_t)reg);
  60}
  61
  62static void fdctrl_write_mem(void *opaque, hwaddr reg,
  63                             uint64_t value, unsigned size)
  64{
  65    fdctrl_write(opaque, (uint32_t)reg, value);
  66}
  67
  68static const MemoryRegionOps fdctrl_mem_ops = {
  69    .read = fdctrl_read_mem,
  70    .write = fdctrl_write_mem,
  71    .endianness = DEVICE_NATIVE_ENDIAN,
  72};
  73
  74static const MemoryRegionOps fdctrl_mem_strict_ops = {
  75    .read = fdctrl_read_mem,
  76    .write = fdctrl_write_mem,
  77    .endianness = DEVICE_NATIVE_ENDIAN,
  78    .valid = {
  79        .min_access_size = 1,
  80        .max_access_size = 1,
  81    },
  82};
  83
  84static void fdctrl_external_reset_sysbus(DeviceState *d)
  85{
  86    FDCtrlSysBus *sys = SYSBUS_FDC(d);
  87    FDCtrl *s = &sys->state;
  88
  89    fdctrl_reset(s, 0);
  90}
  91
  92static void fdctrl_handle_tc(void *opaque, int irq, int level)
  93{
  94    trace_fdctrl_tc_pulse(level);
  95}
  96
  97void fdctrl_init_sysbus(qemu_irq irq, int dma_chann,
  98                        hwaddr mmio_base, DriveInfo **fds)
  99{
 100    FDCtrl *fdctrl;
 101    DeviceState *dev;
 102    SysBusDevice *sbd;
 103    FDCtrlSysBus *sys;
 104
 105    dev = qdev_new("sysbus-fdc");
 106    sys = SYSBUS_FDC(dev);
 107    fdctrl = &sys->state;
 108    fdctrl->dma_chann = dma_chann; /* FIXME */
 109    sbd = SYS_BUS_DEVICE(dev);
 110    sysbus_realize_and_unref(sbd, &error_fatal);
 111    sysbus_connect_irq(sbd, 0, irq);
 112    sysbus_mmio_map(sbd, 0, mmio_base);
 113
 114    fdctrl_init_drives(&sys->state.bus, fds);
 115}
 116
 117void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
 118                       DriveInfo **fds, qemu_irq *fdc_tc)
 119{
 120    DeviceState *dev;
 121    FDCtrlSysBus *sys;
 122
 123    dev = qdev_new("sun-fdtwo");
 124    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 125    sys = SYSBUS_FDC(dev);
 126    sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq);
 127    sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base);
 128    *fdc_tc = qdev_get_gpio_in(dev, 0);
 129
 130    fdctrl_init_drives(&sys->state.bus, fds);
 131}
 132
 133static void sysbus_fdc_common_instance_init(Object *obj)
 134{
 135    DeviceState *dev = DEVICE(obj);
 136    FDCtrlSysBusClass *sbdc = SYSBUS_FDC_GET_CLASS(obj);
 137    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 138    FDCtrlSysBus *sys = SYSBUS_FDC(obj);
 139    FDCtrl *fdctrl = &sys->state;
 140
 141    qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */
 142
 143    memory_region_init_io(&fdctrl->iomem, obj,
 144                          sbdc->use_strict_io ? &fdctrl_mem_strict_ops
 145                                              : &fdctrl_mem_ops,
 146                          fdctrl, "fdc", 0x08);
 147    sysbus_init_mmio(sbd, &fdctrl->iomem);
 148
 149    sysbus_init_irq(sbd, &fdctrl->irq);
 150    qdev_init_gpio_in(dev, fdctrl_handle_tc, 1);
 151}
 152
 153static void sysbus_fdc_realize(DeviceState *dev, Error **errp)
 154{
 155    FDCtrlSysBus *sys = SYSBUS_FDC(dev);
 156    FDCtrl *fdctrl = &sys->state;
 157
 158    fdctrl_realize_common(dev, fdctrl, errp);
 159}
 160
 161static const VMStateDescription vmstate_sysbus_fdc = {
 162    .name = "fdc",
 163    .version_id = 2,
 164    .minimum_version_id = 2,
 165    .fields = (VMStateField[]) {
 166        VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
 167        VMSTATE_END_OF_LIST()
 168    }
 169};
 170
 171static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data)
 172{
 173    DeviceClass *dc = DEVICE_CLASS(klass);
 174
 175    dc->realize = sysbus_fdc_realize;
 176    dc->reset = fdctrl_external_reset_sysbus;
 177    dc->vmsd = &vmstate_sysbus_fdc;
 178    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
 179}
 180
 181static const TypeInfo sysbus_fdc_common_typeinfo = {
 182    .name          = TYPE_SYSBUS_FDC,
 183    .parent        = TYPE_SYS_BUS_DEVICE,
 184    .instance_size = sizeof(FDCtrlSysBus),
 185    .instance_init = sysbus_fdc_common_instance_init,
 186    .abstract      = true,
 187    .class_init    = sysbus_fdc_common_class_init,
 188    .class_size    = sizeof(FDCtrlSysBusClass),
 189};
 190
 191static Property sysbus_fdc_properties[] = {
 192    DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type,
 193                        FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
 194                        FloppyDriveType),
 195    DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type,
 196                        FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
 197                        FloppyDriveType),
 198    DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
 199                        FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
 200                        FloppyDriveType),
 201    DEFINE_PROP_END_OF_LIST(),
 202};
 203
 204static void sysbus_fdc_class_init(ObjectClass *klass, void *data)
 205{
 206    DeviceClass *dc = DEVICE_CLASS(klass);
 207
 208    dc->desc = "virtual floppy controller";
 209    device_class_set_props(dc, sysbus_fdc_properties);
 210}
 211
 212static const TypeInfo sysbus_fdc_typeinfo = {
 213    .name          = "sysbus-fdc",
 214    .parent        = TYPE_SYSBUS_FDC,
 215    .class_init    = sysbus_fdc_class_init,
 216};
 217
 218static Property sun4m_fdc_properties[] = {
 219    DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type,
 220                        FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
 221                        FloppyDriveType),
 222    DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
 223                        FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
 224                        FloppyDriveType),
 225    DEFINE_PROP_END_OF_LIST(),
 226};
 227
 228static void sun4m_fdc_class_init(ObjectClass *klass, void *data)
 229{
 230    FDCtrlSysBusClass *sbdc = SYSBUS_FDC_CLASS(klass);
 231    DeviceClass *dc = DEVICE_CLASS(klass);
 232
 233    sbdc->use_strict_io = true;
 234    dc->desc = "virtual floppy controller";
 235    device_class_set_props(dc, sun4m_fdc_properties);
 236}
 237
 238static const TypeInfo sun4m_fdc_typeinfo = {
 239    .name          = "sun-fdtwo",
 240    .parent        = TYPE_SYSBUS_FDC,
 241    .class_init    = sun4m_fdc_class_init,
 242};
 243
 244static void sysbus_fdc_register_types(void)
 245{
 246    type_register_static(&sysbus_fdc_common_typeinfo);
 247    type_register_static(&sysbus_fdc_typeinfo);
 248    type_register_static(&sun4m_fdc_typeinfo);
 249}
 250
 251type_init(sysbus_fdc_register_types)
 252