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/blockdev.h"
  18#include "chardev/char.h"
  19#include "hw/block/fdc.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 *fd[MAX_FD];
  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_new("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            object_property_add_child(OBJECT(dev), name, OBJECT(isa));
  66            isa_realize_and_unref(isa, bus, &error_fatal);
  67            sio->parallel[i] = isa;
  68            trace_superio_create_parallel(i,
  69                                          k->parallel.get_iobase ?
  70                                          k->parallel.get_iobase(sio, i) : -1,
  71                                          k->parallel.get_irq ?
  72                                          k->parallel.get_irq(sio, i) : -1);
  73            g_free(name);
  74        }
  75    }
  76
  77    /* Serial */
  78    for (i = 0; i < k->serial.count; i++) {
  79        if (i >= ARRAY_SIZE(sio->serial)) {
  80            warn_report("superio: ignoring %td serial controllers",
  81                        k->serial.count - ARRAY_SIZE(sio->serial));
  82            break;
  83        }
  84        if (!k->serial.is_enabled || k->serial.is_enabled(sio, i)) {
  85            /* FIXME use a qdev chardev prop instead of serial_hd() */
  86            chr = serial_hd(i);
  87            if (chr == NULL) {
  88                name = g_strdup_printf("discarding-serial%d", i);
  89                chr = qemu_chr_new(name, "null", NULL);
  90            } else {
  91                name = g_strdup_printf("serial%d", i);
  92            }
  93            isa = isa_new(TYPE_ISA_SERIAL);
  94            d = DEVICE(isa);
  95            qdev_prop_set_uint32(d, "index", i);
  96            if (k->serial.get_iobase) {
  97                qdev_prop_set_uint32(d, "iobase",
  98                                     k->serial.get_iobase(sio, i));
  99            }
 100            if (k->serial.get_irq) {
 101                qdev_prop_set_uint32(d, "irq", k->serial.get_irq(sio, i));
 102            }
 103            qdev_prop_set_chr(d, "chardev", chr);
 104            object_property_add_child(OBJECT(dev), name, OBJECT(isa));
 105            isa_realize_and_unref(isa, bus, &error_fatal);
 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            g_free(name);
 113        }
 114    }
 115
 116    /* Floppy disc */
 117    if (!k->floppy.is_enabled || k->floppy.is_enabled(sio, 0)) {
 118        isa = isa_new(TYPE_ISA_FDC);
 119        d = DEVICE(isa);
 120        if (k->floppy.get_iobase) {
 121            qdev_prop_set_uint32(d, "iobase", k->floppy.get_iobase(sio, 0));
 122        }
 123        if (k->floppy.get_irq) {
 124            qdev_prop_set_uint32(d, "irq", k->floppy.get_irq(sio, 0));
 125        }
 126        /* FIXME use a qdev drive property instead of drive_get() */
 127        for (i = 0; i < MAX_FD; i++) {
 128            fd[i] = drive_get(IF_FLOPPY, 0, i);
 129        }
 130        object_property_add_child(OBJECT(sio), "isa-fdc", OBJECT(isa));
 131        isa_realize_and_unref(isa, bus, &error_fatal);
 132        isa_fdc_init_drives(isa, fd);
 133        sio->floppy = isa;
 134        trace_superio_create_floppy(0,
 135                                    k->floppy.get_iobase ?
 136                                    k->floppy.get_iobase(sio, 0) : -1,
 137                                    k->floppy.get_irq ?
 138                                    k->floppy.get_irq(sio, 0) : -1);
 139    }
 140
 141    /* Keyboard, mouse */
 142    isa = isa_new(TYPE_I8042);
 143    object_property_add_child(OBJECT(sio), TYPE_I8042, OBJECT(isa));
 144    isa_realize_and_unref(isa, bus, &error_fatal);
 145    sio->kbc = isa;
 146
 147    /* IDE */
 148    if (k->ide.count && (!k->ide.is_enabled || k->ide.is_enabled(sio, 0))) {
 149        isa = isa_new("isa-ide");
 150        d = DEVICE(isa);
 151        if (k->ide.get_iobase) {
 152            qdev_prop_set_uint32(d, "iobase", k->ide.get_iobase(sio, 0));
 153        }
 154        if (k->ide.get_iobase) {
 155            qdev_prop_set_uint32(d, "iobase2", k->ide.get_iobase(sio, 1));
 156        }
 157        if (k->ide.get_irq) {
 158            qdev_prop_set_uint32(d, "irq", k->ide.get_irq(sio, 0));
 159        }
 160        object_property_add_child(OBJECT(sio), "isa-ide", OBJECT(isa));
 161        isa_realize_and_unref(isa, bus, &error_fatal);
 162        sio->ide = isa;
 163        trace_superio_create_ide(0,
 164                                 k->ide.get_iobase ?
 165                                 k->ide.get_iobase(sio, 0) : -1,
 166                                 k->ide.get_irq ?
 167                                 k->ide.get_irq(sio, 0) : -1);
 168    }
 169}
 170
 171static void isa_superio_class_init(ObjectClass *oc, void *data)
 172{
 173    DeviceClass *dc = DEVICE_CLASS(oc);
 174
 175    dc->realize = isa_superio_realize;
 176    /* Reason: Uses parallel_hds[0] in realize(), so it can't be used twice */
 177    dc->user_creatable = false;
 178}
 179
 180static const TypeInfo isa_superio_type_info = {
 181    .name = TYPE_ISA_SUPERIO,
 182    .parent = TYPE_ISA_DEVICE,
 183    .abstract = true,
 184    .class_size = sizeof(ISASuperIOClass),
 185    .class_init = isa_superio_class_init,
 186};
 187
 188/* SMS FDC37M817 Super I/O */
 189static void fdc37m81x_class_init(ObjectClass *klass, void *data)
 190{
 191    ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 192
 193    sc->serial.count = 2; /* NS16C550A */
 194    sc->parallel.count = 1;
 195    sc->floppy.count = 1; /* SMSC 82077AA Compatible */
 196    sc->ide.count = 0;
 197}
 198
 199static const TypeInfo fdc37m81x_type_info = {
 200    .name          = TYPE_FDC37M81X_SUPERIO,
 201    .parent        = TYPE_ISA_SUPERIO,
 202    .instance_size = sizeof(ISASuperIODevice),
 203    .class_init    = fdc37m81x_class_init,
 204};
 205
 206static void isa_superio_register_types(void)
 207{
 208    type_register_static(&isa_superio_type_info);
 209    type_register_static(&fdc37m81x_type_info);
 210}
 211
 212type_init(isa_superio_register_types)
 213