qemu/hw/isa/isa-superio.c
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   1/*
   2 * Generic ISA Super I/O
   3 *
   4 * Copyright (c) 2010-2012 Herve Poussineau
   5 * Copyright (c) 2011-2012 Andreas Färber
   6 * Copyright (c) 2018 Philippe Mathieu-Daudé
   7 *
   8 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9 * See the COPYING file in the top-level directory.
  10 * SPDX-License-Identifier: GPL-2.0-or-later
  11 */
  12
  13#include "qemu/osdep.h"
  14#include "qemu/error-report.h"
  15#include "qemu/module.h"
  16#include "qapi/error.h"
  17#include "sysemu/sysemu.h"
  18#include "sysemu/blockdev.h"
  19#include "chardev/char.h"
  20#include "hw/isa/superio.h"
  21#include "hw/qdev-properties.h"
  22#include "hw/input/i8042.h"
  23#include "hw/char/serial.h"
  24#include "trace.h"
  25
  26static void isa_superio_realize(DeviceState *dev, Error **errp)
  27{
  28    ISASuperIODevice *sio = ISA_SUPERIO(dev);
  29    ISASuperIOClass *k = ISA_SUPERIO_GET_CLASS(sio);
  30    ISABus *bus = isa_bus_from_device(ISA_DEVICE(dev));
  31    ISADevice *isa;
  32    DeviceState *d;
  33    Chardev *chr;
  34    DriveInfo *drive;
  35    char *name;
  36    int i;
  37
  38    /* Parallel port */
  39    for (i = 0; i < k->parallel.count; i++) {
  40        if (i >= ARRAY_SIZE(sio->parallel)) {
  41            warn_report("superio: ignoring %td parallel controllers",
  42                        k->parallel.count - ARRAY_SIZE(sio->parallel));
  43            break;
  44        }
  45        if (!k->parallel.is_enabled || k->parallel.is_enabled(sio, i)) {
  46            /* FIXME use a qdev chardev prop instead of parallel_hds[] */
  47            chr = parallel_hds[i];
  48            if (chr == NULL) {
  49                name = g_strdup_printf("discarding-parallel%d", i);
  50                chr = qemu_chr_new(name, "null", NULL);
  51            } else {
  52                name = g_strdup_printf("parallel%d", i);
  53            }
  54            isa = isa_create(bus, "isa-parallel");
  55            d = DEVICE(isa);
  56            qdev_prop_set_uint32(d, "index", i);
  57            if (k->parallel.get_iobase) {
  58                qdev_prop_set_uint32(d, "iobase",
  59                                     k->parallel.get_iobase(sio, i));
  60            }
  61            if (k->parallel.get_irq) {
  62                qdev_prop_set_uint32(d, "irq", k->parallel.get_irq(sio, i));
  63            }
  64            qdev_prop_set_chr(d, "chardev", chr);
  65            qdev_init_nofail(d);
  66            sio->parallel[i] = isa;
  67            trace_superio_create_parallel(i,
  68                                          k->parallel.get_iobase ?
  69                                          k->parallel.get_iobase(sio, i) : -1,
  70                                          k->parallel.get_irq ?
  71                                          k->parallel.get_irq(sio, i) : -1);
  72            object_property_add_child(OBJECT(dev), name,
  73                                      OBJECT(sio->parallel[i]), NULL);
  74            g_free(name);
  75        }
  76    }
  77
  78    /* Serial */
  79    for (i = 0; i < k->serial.count; i++) {
  80        if (i >= ARRAY_SIZE(sio->serial)) {
  81            warn_report("superio: ignoring %td serial controllers",
  82                        k->serial.count - ARRAY_SIZE(sio->serial));
  83            break;
  84        }
  85        if (!k->serial.is_enabled || k->serial.is_enabled(sio, i)) {
  86            /* FIXME use a qdev chardev prop instead of serial_hd() */
  87            chr = serial_hd(i);
  88            if (chr == NULL) {
  89                name = g_strdup_printf("discarding-serial%d", i);
  90                chr = qemu_chr_new(name, "null", NULL);
  91            } else {
  92                name = g_strdup_printf("serial%d", i);
  93            }
  94            isa = isa_create(bus, TYPE_ISA_SERIAL);
  95            d = DEVICE(isa);
  96            qdev_prop_set_uint32(d, "index", i);
  97            if (k->serial.get_iobase) {
  98                qdev_prop_set_uint32(d, "iobase",
  99                                     k->serial.get_iobase(sio, i));
 100            }
 101            if (k->serial.get_irq) {
 102                qdev_prop_set_uint32(d, "irq", k->serial.get_irq(sio, i));
 103            }
 104            qdev_prop_set_chr(d, "chardev", chr);
 105            qdev_init_nofail(d);
 106            sio->serial[i] = isa;
 107            trace_superio_create_serial(i,
 108                                        k->serial.get_iobase ?
 109                                        k->serial.get_iobase(sio, i) : -1,
 110                                        k->serial.get_irq ?
 111                                        k->serial.get_irq(sio, i) : -1);
 112            object_property_add_child(OBJECT(dev), name,
 113                                      OBJECT(sio->serial[0]), NULL);
 114            g_free(name);
 115        }
 116    }
 117
 118    /* Floppy disc */
 119    if (!k->floppy.is_enabled || k->floppy.is_enabled(sio, 0)) {
 120        isa = isa_create(bus, "isa-fdc");
 121        d = DEVICE(isa);
 122        if (k->floppy.get_iobase) {
 123            qdev_prop_set_uint32(d, "iobase", k->floppy.get_iobase(sio, 0));
 124        }
 125        if (k->floppy.get_irq) {
 126            qdev_prop_set_uint32(d, "irq", k->floppy.get_irq(sio, 0));
 127        }
 128        /* FIXME use a qdev drive property instead of drive_get() */
 129        drive = drive_get(IF_FLOPPY, 0, 0);
 130        if (drive != NULL) {
 131            qdev_prop_set_drive(d, "driveA", blk_by_legacy_dinfo(drive),
 132                                &error_fatal);
 133        }
 134        /* FIXME use a qdev drive property instead of drive_get() */
 135        drive = drive_get(IF_FLOPPY, 0, 1);
 136        if (drive != NULL) {
 137            qdev_prop_set_drive(d, "driveB", blk_by_legacy_dinfo(drive),
 138                                &error_fatal);
 139        }
 140        qdev_init_nofail(d);
 141        sio->floppy = isa;
 142        trace_superio_create_floppy(0,
 143                                    k->floppy.get_iobase ?
 144                                    k->floppy.get_iobase(sio, 0) : -1,
 145                                    k->floppy.get_irq ?
 146                                    k->floppy.get_irq(sio, 0) : -1);
 147    }
 148
 149    /* Keyboard, mouse */
 150    sio->kbc = isa_create_simple(bus, TYPE_I8042);
 151
 152    /* IDE */
 153    if (k->ide.count && (!k->ide.is_enabled || k->ide.is_enabled(sio, 0))) {
 154        isa = isa_create(bus, "isa-ide");
 155        d = DEVICE(isa);
 156        if (k->ide.get_iobase) {
 157            qdev_prop_set_uint32(d, "iobase", k->ide.get_iobase(sio, 0));
 158        }
 159        if (k->ide.get_iobase) {
 160            qdev_prop_set_uint32(d, "iobase2", k->ide.get_iobase(sio, 1));
 161        }
 162        if (k->ide.get_irq) {
 163            qdev_prop_set_uint32(d, "irq", k->ide.get_irq(sio, 0));
 164        }
 165        qdev_init_nofail(d);
 166        sio->ide = isa;
 167        trace_superio_create_ide(0,
 168                                 k->ide.get_iobase ?
 169                                 k->ide.get_iobase(sio, 0) : -1,
 170                                 k->ide.get_irq ?
 171                                 k->ide.get_irq(sio, 0) : -1);
 172    }
 173}
 174
 175static void isa_superio_class_init(ObjectClass *oc, void *data)
 176{
 177    DeviceClass *dc = DEVICE_CLASS(oc);
 178
 179    dc->realize = isa_superio_realize;
 180    /* Reason: Uses parallel_hds[0] in realize(), so it can't be used twice */
 181    dc->user_creatable = false;
 182}
 183
 184static const TypeInfo isa_superio_type_info = {
 185    .name = TYPE_ISA_SUPERIO,
 186    .parent = TYPE_ISA_DEVICE,
 187    .abstract = true,
 188    .class_size = sizeof(ISASuperIOClass),
 189    .class_init = isa_superio_class_init,
 190};
 191
 192/* SMS FDC37M817 Super I/O */
 193static void fdc37m81x_class_init(ObjectClass *klass, void *data)
 194{
 195    ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 196
 197    sc->serial.count = 2; /* NS16C550A */
 198    sc->parallel.count = 1;
 199    sc->floppy.count = 1; /* SMSC 82077AA Compatible */
 200    sc->ide.count = 0;
 201}
 202
 203static const TypeInfo fdc37m81x_type_info = {
 204    .name          = TYPE_FDC37M81X_SUPERIO,
 205    .parent        = TYPE_ISA_SUPERIO,
 206    .instance_size = sizeof(ISASuperIODevice),
 207    .class_init    = fdc37m81x_class_init,
 208};
 209
 210static void isa_superio_register_types(void)
 211{
 212    type_register_static(&isa_superio_type_info);
 213    type_register_static(&fdc37m81x_type_info);
 214}
 215
 216type_init(isa_superio_register_types)
 217