| 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 "system/memory.h" |
| 30 | #include "hw/core/sysbus.h" |
| 31 | #include "hw/block/fdc.h" |
| 32 | #include "migration/vmstate.h" |
| 33 | #include "fdc-internal.h" |
| 34 | #include "trace.h" |
| 35 | |
| 36 | #define TYPE_SYSBUS_FDC "base-sysbus-fdc" |
| 37 | typedef struct FDCtrlSysBusClass FDCtrlSysBusClass; |
| 38 | typedef struct FDCtrlSysBus FDCtrlSysBus; |
| 39 | DECLARE_OBJ_CHECKERS(FDCtrlSysBus, FDCtrlSysBusClass, |
| 40 | SYSBUS_FDC, TYPE_SYSBUS_FDC) |
| 41 | |
| 42 | struct FDCtrlSysBusClass { |
| 43 | /*< private >*/ |
| 44 | SysBusDeviceClass parent_class; |
| 45 | /*< public >*/ |
| 46 | |
| 47 | bool use_strict_io; |
| 48 | }; |
| 49 | |
| 50 | struct FDCtrlSysBus { |
| 51 | /*< private >*/ |
| 52 | SysBusDevice parent_obj; |
| 53 | /*< public >*/ |
| 54 | |
| 55 | struct FDCtrl state; |
| 56 | MemoryRegion iomem; |
| 57 | }; |
| 58 | |
| 59 | static uint64_t fdctrl_read_mem(void *opaque, hwaddr reg, unsigned ize) |
| 60 | { |
| 61 | return fdctrl_read(opaque, (uint32_t)reg); |
| 62 | } |
| 63 | |
| 64 | static void fdctrl_write_mem(void *opaque, hwaddr reg, |
| 65 | uint64_t value, unsigned size) |
| 66 | { |
| 67 | fdctrl_write(opaque, (uint32_t)reg, value); |
| 68 | } |
| 69 | |
| 70 | static const MemoryRegionOps fdctrl_mem_ops = { |
| 71 | .read = fdctrl_read_mem, |
| 72 | .write = fdctrl_write_mem, |
| 73 | .endianness = DEVICE_NATIVE_ENDIAN, |
| 74 | }; |
| 75 | |
| 76 | static const MemoryRegionOps fdctrl_mem_strict_ops = { |
| 77 | .read = fdctrl_read_mem, |
| 78 | .write = fdctrl_write_mem, |
| 79 | .endianness = DEVICE_NATIVE_ENDIAN, |
| 80 | .valid = { |
| 81 | .min_access_size = 1, |
| 82 | .max_access_size = 1, |
| 83 | }, |
| 84 | }; |
| 85 | |
| 86 | static void fdctrl_external_reset_sysbus(DeviceState *d) |
| 87 | { |
| 88 | FDCtrlSysBus *sys = SYSBUS_FDC(d); |
| 89 | FDCtrl *s = &sys->state; |
| 90 | |
| 91 | fdctrl_reset(s, 0); |
| 92 | } |
| 93 | |
| 94 | static void fdctrl_handle_tc(void *opaque, int irq, int level) |
| 95 | { |
| 96 | trace_fdctrl_tc_pulse(level); |
| 97 | } |
| 98 | |
| 99 | void fdctrl_init_sysbus(qemu_irq irq, hwaddr mmio_base, DriveInfo **fds) |
| 100 | { |
| 101 | DeviceState *dev; |
| 102 | SysBusDevice *sbd; |
| 103 | FDCtrlSysBus *sys; |
| 104 | |
| 105 | dev = qdev_new("sysbus-fdc"); |
| 106 | sys = SYSBUS_FDC(dev); |
| 107 | sbd = SYS_BUS_DEVICE(dev); |
| 108 | sysbus_realize_and_unref(sbd, &error_fatal); |
| 109 | sysbus_connect_irq(sbd, 0, irq); |
| 110 | sysbus_mmio_map(sbd, 0, mmio_base); |
| 111 | |
| 112 | fdctrl_init_drives(&sys->state.bus, fds); |
| 113 | } |
| 114 | |
| 115 | void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base, |
| 116 | DriveInfo **fds, qemu_irq *fdc_tc) |
| 117 | { |
| 118 | DeviceState *dev; |
| 119 | FDCtrlSysBus *sys; |
| 120 | |
| 121 | dev = qdev_new("sun-fdtwo"); |
| 122 | sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); |
| 123 | sys = SYSBUS_FDC(dev); |
| 124 | sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq); |
| 125 | sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base); |
| 126 | *fdc_tc = qdev_get_gpio_in(dev, 0); |
| 127 | |
| 128 | fdctrl_init_drives(&sys->state.bus, fds); |
| 129 | } |
| 130 | |
| 131 | static void sysbus_fdc_common_instance_init(Object *obj) |
| 132 | { |
| 133 | DeviceState *dev = DEVICE(obj); |
| 134 | FDCtrlSysBusClass *sbdc = SYSBUS_FDC_GET_CLASS(obj); |
| 135 | SysBusDevice *sbd = SYS_BUS_DEVICE(dev); |
| 136 | FDCtrlSysBus *sys = SYSBUS_FDC(obj); |
| 137 | FDCtrl *fdctrl = &sys->state; |
| 138 | |
| 139 | /* |
| 140 | * DMA is not currently supported for sysbus floppy controllers. |
| 141 | * If we wanted to add support then probably the best approach is |
| 142 | * to have a QOM link property 'dma-controller' which the board |
| 143 | * code can set to an instance of IsaDmaClass, and an integer |
| 144 | * property 'dma-channel', so that we can set fdctrl->dma and |
| 145 | * fdctrl->dma_chann accordingly. |
| 146 | */ |
| 147 | fdctrl->dma_chann = -1; |
| 148 | |
| 149 | qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */ |
| 150 | |
| 151 | memory_region_init_io(&sys->iomem, obj, |
| 152 | sbdc->use_strict_io ? &fdctrl_mem_strict_ops |
| 153 | : &fdctrl_mem_ops, |
| 154 | fdctrl, "fdc", 0x08); |
| 155 | sysbus_init_mmio(sbd, &sys->iomem); |
| 156 | |
| 157 | sysbus_init_irq(sbd, &fdctrl->irq); |
| 158 | qdev_init_gpio_in(dev, fdctrl_handle_tc, 1); |
| 159 | } |
| 160 | |
| 161 | static void sysbus_fdc_realize(DeviceState *dev, Error **errp) |
| 162 | { |
| 163 | FDCtrlSysBus *sys = SYSBUS_FDC(dev); |
| 164 | FDCtrl *fdctrl = &sys->state; |
| 165 | |
| 166 | fdctrl_realize_common(dev, fdctrl, errp); |
| 167 | } |
| 168 | |
| 169 | static const VMStateDescription vmstate_sysbus_fdc = { |
| 170 | .name = "fdc", |
| 171 | .version_id = 2, |
| 172 | .minimum_version_id = 2, |
| 173 | .fields = (const VMStateField[]) { |
| 174 | VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl), |
| 175 | VMSTATE_END_OF_LIST() |
| 176 | } |
| 177 | }; |
| 178 | |
| 179 | static void sysbus_fdc_common_class_init(ObjectClass *klass, const void *data) |
| 180 | { |
| 181 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 182 | |
| 183 | dc->realize = sysbus_fdc_realize; |
| 184 | device_class_set_legacy_reset(dc, fdctrl_external_reset_sysbus); |
| 185 | dc->vmsd = &vmstate_sysbus_fdc; |
| 186 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| 187 | } |
| 188 | |
| 189 | static const TypeInfo sysbus_fdc_common_typeinfo = { |
| 190 | .name = TYPE_SYSBUS_FDC, |
| 191 | .parent = TYPE_SYS_BUS_DEVICE, |
| 192 | .instance_size = sizeof(FDCtrlSysBus), |
| 193 | .instance_init = sysbus_fdc_common_instance_init, |
| 194 | .abstract = true, |
| 195 | .class_init = sysbus_fdc_common_class_init, |
| 196 | .class_size = sizeof(FDCtrlSysBusClass), |
| 197 | }; |
| 198 | |
| 199 | static const Property sysbus_fdc_properties[] = { |
| 200 | DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type, |
| 201 | FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, |
| 202 | FloppyDriveType), |
| 203 | DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type, |
| 204 | FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, |
| 205 | FloppyDriveType), |
| 206 | DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback, |
| 207 | FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, |
| 208 | FloppyDriveType), |
| 209 | }; |
| 210 | |
| 211 | static void sysbus_fdc_class_init(ObjectClass *klass, const void *data) |
| 212 | { |
| 213 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 214 | |
| 215 | dc->desc = "virtual floppy controller"; |
| 216 | device_class_set_props(dc, sysbus_fdc_properties); |
| 217 | } |
| 218 | |
| 219 | static const TypeInfo sysbus_fdc_typeinfo = { |
| 220 | .name = "sysbus-fdc", |
| 221 | .parent = TYPE_SYSBUS_FDC, |
| 222 | .class_init = sysbus_fdc_class_init, |
| 223 | }; |
| 224 | |
| 225 | static const Property sun4m_fdc_properties[] = { |
| 226 | DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type, |
| 227 | FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type, |
| 228 | FloppyDriveType), |
| 229 | DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback, |
| 230 | FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type, |
| 231 | FloppyDriveType), |
| 232 | }; |
| 233 | |
| 234 | static void sun4m_fdc_class_init(ObjectClass *klass, const void *data) |
| 235 | { |
| 236 | FDCtrlSysBusClass *sbdc = SYSBUS_FDC_CLASS(klass); |
| 237 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 238 | |
| 239 | sbdc->use_strict_io = true; |
| 240 | dc->desc = "virtual floppy controller"; |
| 241 | device_class_set_props(dc, sun4m_fdc_properties); |
| 242 | } |
| 243 | |
| 244 | static const TypeInfo sun4m_fdc_typeinfo = { |
| 245 | .name = "sun-fdtwo", |
| 246 | .parent = TYPE_SYSBUS_FDC, |
| 247 | .class_init = sun4m_fdc_class_init, |
| 248 | }; |
| 249 | |
| 250 | static void sysbus_fdc_register_types(void) |
| 251 | { |
| 252 | type_register_static(&sysbus_fdc_common_typeinfo); |
| 253 | type_register_static(&sysbus_fdc_typeinfo); |
| 254 | type_register_static(&sun4m_fdc_typeinfo); |
| 255 | } |
| 256 | |
| 257 | type_init(sysbus_fdc_register_types) |