xref: /qemu/hw/block/fdc-sysbus.c (revision 7d5dc0a367e0ea054bf662246d4b45a246e62061)
11430759eSPhilippe Mathieu-Daudé /*
21430759eSPhilippe Mathieu-Daudé  * QEMU Floppy disk emulator (Intel 82078)
31430759eSPhilippe Mathieu-Daudé  *
41430759eSPhilippe Mathieu-Daudé  * Copyright (c) 2003, 2007 Jocelyn Mayer
51430759eSPhilippe Mathieu-Daudé  * Copyright (c) 2008 Hervé Poussineau
61430759eSPhilippe Mathieu-Daudé  *
71430759eSPhilippe Mathieu-Daudé  * Permission is hereby granted, free of charge, to any person obtaining a copy
81430759eSPhilippe Mathieu-Daudé  * of this software and associated documentation files (the "Software"), to deal
91430759eSPhilippe Mathieu-Daudé  * in the Software without restriction, including without limitation the rights
101430759eSPhilippe Mathieu-Daudé  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
111430759eSPhilippe Mathieu-Daudé  * copies of the Software, and to permit persons to whom the Software is
121430759eSPhilippe Mathieu-Daudé  * furnished to do so, subject to the following conditions:
131430759eSPhilippe Mathieu-Daudé  *
141430759eSPhilippe Mathieu-Daudé  * The above copyright notice and this permission notice shall be included in
151430759eSPhilippe Mathieu-Daudé  * all copies or substantial portions of the Software.
161430759eSPhilippe Mathieu-Daudé  *
171430759eSPhilippe Mathieu-Daudé  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
181430759eSPhilippe Mathieu-Daudé  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
191430759eSPhilippe Mathieu-Daudé  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
201430759eSPhilippe Mathieu-Daudé  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
211430759eSPhilippe Mathieu-Daudé  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
221430759eSPhilippe Mathieu-Daudé  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
231430759eSPhilippe Mathieu-Daudé  * THE SOFTWARE.
241430759eSPhilippe Mathieu-Daudé  */
251430759eSPhilippe Mathieu-Daudé 
261430759eSPhilippe Mathieu-Daudé #include "qemu/osdep.h"
271430759eSPhilippe Mathieu-Daudé #include "qapi/error.h"
281430759eSPhilippe Mathieu-Daudé #include "qom/object.h"
291430759eSPhilippe Mathieu-Daudé #include "hw/sysbus.h"
301430759eSPhilippe Mathieu-Daudé #include "hw/block/fdc.h"
311430759eSPhilippe Mathieu-Daudé #include "migration/vmstate.h"
321430759eSPhilippe Mathieu-Daudé #include "fdc-internal.h"
331430759eSPhilippe Mathieu-Daudé #include "trace.h"
341430759eSPhilippe Mathieu-Daudé 
351430759eSPhilippe Mathieu-Daudé #define TYPE_SYSBUS_FDC "base-sysbus-fdc"
361430759eSPhilippe Mathieu-Daudé typedef struct FDCtrlSysBusClass FDCtrlSysBusClass;
371430759eSPhilippe Mathieu-Daudé typedef struct FDCtrlSysBus FDCtrlSysBus;
381430759eSPhilippe Mathieu-Daudé DECLARE_OBJ_CHECKERS(FDCtrlSysBus, FDCtrlSysBusClass,
391430759eSPhilippe Mathieu-Daudé                      SYSBUS_FDC, TYPE_SYSBUS_FDC)
401430759eSPhilippe Mathieu-Daudé 
411430759eSPhilippe Mathieu-Daudé struct FDCtrlSysBusClass {
421430759eSPhilippe Mathieu-Daudé     /*< private >*/
431430759eSPhilippe Mathieu-Daudé     SysBusDeviceClass parent_class;
441430759eSPhilippe Mathieu-Daudé     /*< public >*/
451430759eSPhilippe Mathieu-Daudé 
461430759eSPhilippe Mathieu-Daudé     bool use_strict_io;
471430759eSPhilippe Mathieu-Daudé };
481430759eSPhilippe Mathieu-Daudé 
491430759eSPhilippe Mathieu-Daudé struct FDCtrlSysBus {
501430759eSPhilippe Mathieu-Daudé     /*< private >*/
511430759eSPhilippe Mathieu-Daudé     SysBusDevice parent_obj;
521430759eSPhilippe Mathieu-Daudé     /*< public >*/
531430759eSPhilippe Mathieu-Daudé 
541430759eSPhilippe Mathieu-Daudé     struct FDCtrl state;
551430759eSPhilippe Mathieu-Daudé };
561430759eSPhilippe Mathieu-Daudé 
571430759eSPhilippe Mathieu-Daudé static uint64_t fdctrl_read_mem(void *opaque, hwaddr reg, unsigned ize)
581430759eSPhilippe Mathieu-Daudé {
591430759eSPhilippe Mathieu-Daudé     return fdctrl_read(opaque, (uint32_t)reg);
601430759eSPhilippe Mathieu-Daudé }
611430759eSPhilippe Mathieu-Daudé 
621430759eSPhilippe Mathieu-Daudé static void fdctrl_write_mem(void *opaque, hwaddr reg,
631430759eSPhilippe Mathieu-Daudé                              uint64_t value, unsigned size)
641430759eSPhilippe Mathieu-Daudé {
651430759eSPhilippe Mathieu-Daudé     fdctrl_write(opaque, (uint32_t)reg, value);
661430759eSPhilippe Mathieu-Daudé }
671430759eSPhilippe Mathieu-Daudé 
681430759eSPhilippe Mathieu-Daudé static const MemoryRegionOps fdctrl_mem_ops = {
691430759eSPhilippe Mathieu-Daudé     .read = fdctrl_read_mem,
701430759eSPhilippe Mathieu-Daudé     .write = fdctrl_write_mem,
711430759eSPhilippe Mathieu-Daudé     .endianness = DEVICE_NATIVE_ENDIAN,
721430759eSPhilippe Mathieu-Daudé };
731430759eSPhilippe Mathieu-Daudé 
741430759eSPhilippe Mathieu-Daudé static const MemoryRegionOps fdctrl_mem_strict_ops = {
751430759eSPhilippe Mathieu-Daudé     .read = fdctrl_read_mem,
761430759eSPhilippe Mathieu-Daudé     .write = fdctrl_write_mem,
771430759eSPhilippe Mathieu-Daudé     .endianness = DEVICE_NATIVE_ENDIAN,
781430759eSPhilippe Mathieu-Daudé     .valid = {
791430759eSPhilippe Mathieu-Daudé         .min_access_size = 1,
801430759eSPhilippe Mathieu-Daudé         .max_access_size = 1,
811430759eSPhilippe Mathieu-Daudé     },
821430759eSPhilippe Mathieu-Daudé };
831430759eSPhilippe Mathieu-Daudé 
841430759eSPhilippe Mathieu-Daudé static void fdctrl_external_reset_sysbus(DeviceState *d)
851430759eSPhilippe Mathieu-Daudé {
861430759eSPhilippe Mathieu-Daudé     FDCtrlSysBus *sys = SYSBUS_FDC(d);
871430759eSPhilippe Mathieu-Daudé     FDCtrl *s = &sys->state;
881430759eSPhilippe Mathieu-Daudé 
891430759eSPhilippe Mathieu-Daudé     fdctrl_reset(s, 0);
901430759eSPhilippe Mathieu-Daudé }
911430759eSPhilippe Mathieu-Daudé 
921430759eSPhilippe Mathieu-Daudé static void fdctrl_handle_tc(void *opaque, int irq, int level)
931430759eSPhilippe Mathieu-Daudé {
941430759eSPhilippe Mathieu-Daudé     trace_fdctrl_tc_pulse(level);
951430759eSPhilippe Mathieu-Daudé }
961430759eSPhilippe Mathieu-Daudé 
970c285e01SPeter Maydell void fdctrl_init_sysbus(qemu_irq irq, hwaddr mmio_base, DriveInfo **fds)
981430759eSPhilippe Mathieu-Daudé {
991430759eSPhilippe Mathieu-Daudé     DeviceState *dev;
1001430759eSPhilippe Mathieu-Daudé     SysBusDevice *sbd;
1011430759eSPhilippe Mathieu-Daudé     FDCtrlSysBus *sys;
1021430759eSPhilippe Mathieu-Daudé 
1031430759eSPhilippe Mathieu-Daudé     dev = qdev_new("sysbus-fdc");
1041430759eSPhilippe Mathieu-Daudé     sys = SYSBUS_FDC(dev);
1051430759eSPhilippe Mathieu-Daudé     sbd = SYS_BUS_DEVICE(dev);
1061430759eSPhilippe Mathieu-Daudé     sysbus_realize_and_unref(sbd, &error_fatal);
1071430759eSPhilippe Mathieu-Daudé     sysbus_connect_irq(sbd, 0, irq);
1081430759eSPhilippe Mathieu-Daudé     sysbus_mmio_map(sbd, 0, mmio_base);
1091430759eSPhilippe Mathieu-Daudé 
1101430759eSPhilippe Mathieu-Daudé     fdctrl_init_drives(&sys->state.bus, fds);
1111430759eSPhilippe Mathieu-Daudé }
1121430759eSPhilippe Mathieu-Daudé 
1131430759eSPhilippe Mathieu-Daudé void sun4m_fdctrl_init(qemu_irq irq, hwaddr io_base,
1141430759eSPhilippe Mathieu-Daudé                        DriveInfo **fds, qemu_irq *fdc_tc)
1151430759eSPhilippe Mathieu-Daudé {
1161430759eSPhilippe Mathieu-Daudé     DeviceState *dev;
1171430759eSPhilippe Mathieu-Daudé     FDCtrlSysBus *sys;
1181430759eSPhilippe Mathieu-Daudé 
1191430759eSPhilippe Mathieu-Daudé     dev = qdev_new("sun-fdtwo");
1201430759eSPhilippe Mathieu-Daudé     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
1211430759eSPhilippe Mathieu-Daudé     sys = SYSBUS_FDC(dev);
1221430759eSPhilippe Mathieu-Daudé     sysbus_connect_irq(SYS_BUS_DEVICE(sys), 0, irq);
1231430759eSPhilippe Mathieu-Daudé     sysbus_mmio_map(SYS_BUS_DEVICE(sys), 0, io_base);
1241430759eSPhilippe Mathieu-Daudé     *fdc_tc = qdev_get_gpio_in(dev, 0);
1251430759eSPhilippe Mathieu-Daudé 
1261430759eSPhilippe Mathieu-Daudé     fdctrl_init_drives(&sys->state.bus, fds);
1271430759eSPhilippe Mathieu-Daudé }
1281430759eSPhilippe Mathieu-Daudé 
1291430759eSPhilippe Mathieu-Daudé static void sysbus_fdc_common_instance_init(Object *obj)
1301430759eSPhilippe Mathieu-Daudé {
1311430759eSPhilippe Mathieu-Daudé     DeviceState *dev = DEVICE(obj);
1321430759eSPhilippe Mathieu-Daudé     FDCtrlSysBusClass *sbdc = SYSBUS_FDC_GET_CLASS(obj);
1331430759eSPhilippe Mathieu-Daudé     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
1341430759eSPhilippe Mathieu-Daudé     FDCtrlSysBus *sys = SYSBUS_FDC(obj);
1351430759eSPhilippe Mathieu-Daudé     FDCtrl *fdctrl = &sys->state;
1361430759eSPhilippe Mathieu-Daudé 
1370c285e01SPeter Maydell     /*
1380c285e01SPeter Maydell      * DMA is not currently supported for sysbus floppy controllers.
1390c285e01SPeter Maydell      * If we wanted to add support then probably the best approach is
1400c285e01SPeter Maydell      * to have a QOM link property 'dma-controller' which the board
1410c285e01SPeter Maydell      * code can set to an instance of IsaDmaClass, and an integer
1420c285e01SPeter Maydell      * property 'dma-channel', so that we can set fdctrl->dma and
1430c285e01SPeter Maydell      * fdctrl->dma_chann accordingly.
1440c285e01SPeter Maydell      */
1450c285e01SPeter Maydell     fdctrl->dma_chann = -1;
1460c285e01SPeter Maydell 
1471430759eSPhilippe Mathieu-Daudé     qdev_set_legacy_instance_id(dev, 0 /* io */, 2); /* FIXME */
1481430759eSPhilippe Mathieu-Daudé 
1491430759eSPhilippe Mathieu-Daudé     memory_region_init_io(&fdctrl->iomem, obj,
1501430759eSPhilippe Mathieu-Daudé                           sbdc->use_strict_io ? &fdctrl_mem_strict_ops
1511430759eSPhilippe Mathieu-Daudé                                               : &fdctrl_mem_ops,
1521430759eSPhilippe Mathieu-Daudé                           fdctrl, "fdc", 0x08);
1531430759eSPhilippe Mathieu-Daudé     sysbus_init_mmio(sbd, &fdctrl->iomem);
1541430759eSPhilippe Mathieu-Daudé 
1551430759eSPhilippe Mathieu-Daudé     sysbus_init_irq(sbd, &fdctrl->irq);
1561430759eSPhilippe Mathieu-Daudé     qdev_init_gpio_in(dev, fdctrl_handle_tc, 1);
1571430759eSPhilippe Mathieu-Daudé }
1581430759eSPhilippe Mathieu-Daudé 
1591430759eSPhilippe Mathieu-Daudé static void sysbus_fdc_realize(DeviceState *dev, Error **errp)
1601430759eSPhilippe Mathieu-Daudé {
1611430759eSPhilippe Mathieu-Daudé     FDCtrlSysBus *sys = SYSBUS_FDC(dev);
1621430759eSPhilippe Mathieu-Daudé     FDCtrl *fdctrl = &sys->state;
1631430759eSPhilippe Mathieu-Daudé 
1641430759eSPhilippe Mathieu-Daudé     fdctrl_realize_common(dev, fdctrl, errp);
1651430759eSPhilippe Mathieu-Daudé }
1661430759eSPhilippe Mathieu-Daudé 
1671430759eSPhilippe Mathieu-Daudé static const VMStateDescription vmstate_sysbus_fdc = {
1681430759eSPhilippe Mathieu-Daudé     .name = "fdc",
1691430759eSPhilippe Mathieu-Daudé     .version_id = 2,
1701430759eSPhilippe Mathieu-Daudé     .minimum_version_id = 2,
171*7d5dc0a3SRichard Henderson     .fields = (const VMStateField[]) {
1721430759eSPhilippe Mathieu-Daudé         VMSTATE_STRUCT(state, FDCtrlSysBus, 0, vmstate_fdc, FDCtrl),
1731430759eSPhilippe Mathieu-Daudé         VMSTATE_END_OF_LIST()
1741430759eSPhilippe Mathieu-Daudé     }
1751430759eSPhilippe Mathieu-Daudé };
1761430759eSPhilippe Mathieu-Daudé 
1771430759eSPhilippe Mathieu-Daudé static void sysbus_fdc_common_class_init(ObjectClass *klass, void *data)
1781430759eSPhilippe Mathieu-Daudé {
1791430759eSPhilippe Mathieu-Daudé     DeviceClass *dc = DEVICE_CLASS(klass);
1801430759eSPhilippe Mathieu-Daudé 
1811430759eSPhilippe Mathieu-Daudé     dc->realize = sysbus_fdc_realize;
1821430759eSPhilippe Mathieu-Daudé     dc->reset = fdctrl_external_reset_sysbus;
1831430759eSPhilippe Mathieu-Daudé     dc->vmsd = &vmstate_sysbus_fdc;
1841430759eSPhilippe Mathieu-Daudé     set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
1851430759eSPhilippe Mathieu-Daudé }
1861430759eSPhilippe Mathieu-Daudé 
1871430759eSPhilippe Mathieu-Daudé static const TypeInfo sysbus_fdc_common_typeinfo = {
1881430759eSPhilippe Mathieu-Daudé     .name          = TYPE_SYSBUS_FDC,
1891430759eSPhilippe Mathieu-Daudé     .parent        = TYPE_SYS_BUS_DEVICE,
1901430759eSPhilippe Mathieu-Daudé     .instance_size = sizeof(FDCtrlSysBus),
1911430759eSPhilippe Mathieu-Daudé     .instance_init = sysbus_fdc_common_instance_init,
1921430759eSPhilippe Mathieu-Daudé     .abstract      = true,
1931430759eSPhilippe Mathieu-Daudé     .class_init    = sysbus_fdc_common_class_init,
1941430759eSPhilippe Mathieu-Daudé     .class_size    = sizeof(FDCtrlSysBusClass),
1951430759eSPhilippe Mathieu-Daudé };
1961430759eSPhilippe Mathieu-Daudé 
1971430759eSPhilippe Mathieu-Daudé static Property sysbus_fdc_properties[] = {
1981430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_SIGNED("fdtypeA", FDCtrlSysBus, state.qdev_for_drives[0].type,
1991430759eSPhilippe Mathieu-Daudé                         FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
2001430759eSPhilippe Mathieu-Daudé                         FloppyDriveType),
2011430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_SIGNED("fdtypeB", FDCtrlSysBus, state.qdev_for_drives[1].type,
2021430759eSPhilippe Mathieu-Daudé                         FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
2031430759eSPhilippe Mathieu-Daudé                         FloppyDriveType),
2041430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
2051430759eSPhilippe Mathieu-Daudé                         FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
2061430759eSPhilippe Mathieu-Daudé                         FloppyDriveType),
2071430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_END_OF_LIST(),
2081430759eSPhilippe Mathieu-Daudé };
2091430759eSPhilippe Mathieu-Daudé 
2101430759eSPhilippe Mathieu-Daudé static void sysbus_fdc_class_init(ObjectClass *klass, void *data)
2111430759eSPhilippe Mathieu-Daudé {
2121430759eSPhilippe Mathieu-Daudé     DeviceClass *dc = DEVICE_CLASS(klass);
2131430759eSPhilippe Mathieu-Daudé 
2149362984fSPhilippe Mathieu-Daudé     dc->desc = "virtual floppy controller";
2151430759eSPhilippe Mathieu-Daudé     device_class_set_props(dc, sysbus_fdc_properties);
2161430759eSPhilippe Mathieu-Daudé }
2171430759eSPhilippe Mathieu-Daudé 
2181430759eSPhilippe Mathieu-Daudé static const TypeInfo sysbus_fdc_typeinfo = {
2191430759eSPhilippe Mathieu-Daudé     .name          = "sysbus-fdc",
2201430759eSPhilippe Mathieu-Daudé     .parent        = TYPE_SYSBUS_FDC,
2211430759eSPhilippe Mathieu-Daudé     .class_init    = sysbus_fdc_class_init,
2221430759eSPhilippe Mathieu-Daudé };
2231430759eSPhilippe Mathieu-Daudé 
2241430759eSPhilippe Mathieu-Daudé static Property sun4m_fdc_properties[] = {
2251430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_SIGNED("fdtype", FDCtrlSysBus, state.qdev_for_drives[0].type,
2261430759eSPhilippe Mathieu-Daudé                         FLOPPY_DRIVE_TYPE_AUTO, qdev_prop_fdc_drive_type,
2271430759eSPhilippe Mathieu-Daudé                         FloppyDriveType),
2281430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_SIGNED("fallback", FDCtrlSysBus, state.fallback,
2291430759eSPhilippe Mathieu-Daudé                         FLOPPY_DRIVE_TYPE_144, qdev_prop_fdc_drive_type,
2301430759eSPhilippe Mathieu-Daudé                         FloppyDriveType),
2311430759eSPhilippe Mathieu-Daudé     DEFINE_PROP_END_OF_LIST(),
2321430759eSPhilippe Mathieu-Daudé };
2331430759eSPhilippe Mathieu-Daudé 
2341430759eSPhilippe Mathieu-Daudé static void sun4m_fdc_class_init(ObjectClass *klass, void *data)
2351430759eSPhilippe Mathieu-Daudé {
2361430759eSPhilippe Mathieu-Daudé     FDCtrlSysBusClass *sbdc = SYSBUS_FDC_CLASS(klass);
2371430759eSPhilippe Mathieu-Daudé     DeviceClass *dc = DEVICE_CLASS(klass);
2381430759eSPhilippe Mathieu-Daudé 
2391430759eSPhilippe Mathieu-Daudé     sbdc->use_strict_io = true;
2409362984fSPhilippe Mathieu-Daudé     dc->desc = "virtual floppy controller";
2411430759eSPhilippe Mathieu-Daudé     device_class_set_props(dc, sun4m_fdc_properties);
2421430759eSPhilippe Mathieu-Daudé }
2431430759eSPhilippe Mathieu-Daudé 
2441430759eSPhilippe Mathieu-Daudé static const TypeInfo sun4m_fdc_typeinfo = {
2451430759eSPhilippe Mathieu-Daudé     .name          = "sun-fdtwo",
2461430759eSPhilippe Mathieu-Daudé     .parent        = TYPE_SYSBUS_FDC,
2471430759eSPhilippe Mathieu-Daudé     .class_init    = sun4m_fdc_class_init,
2481430759eSPhilippe Mathieu-Daudé };
2491430759eSPhilippe Mathieu-Daudé 
2501430759eSPhilippe Mathieu-Daudé static void sysbus_fdc_register_types(void)
2511430759eSPhilippe Mathieu-Daudé {
2521430759eSPhilippe Mathieu-Daudé     type_register_static(&sysbus_fdc_common_typeinfo);
2531430759eSPhilippe Mathieu-Daudé     type_register_static(&sysbus_fdc_typeinfo);
2541430759eSPhilippe Mathieu-Daudé     type_register_static(&sun4m_fdc_typeinfo);
2551430759eSPhilippe Mathieu-Daudé }
2561430759eSPhilippe Mathieu-Daudé 
2571430759eSPhilippe Mathieu-Daudé type_init(sysbus_fdc_register_types)
258