hw/isa/isa-superio.c

   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/block/fdc.h"
  21 #include "hw/isa/superio.h"
  22 #include "hw/qdev-properties.h"
  23 #include "hw/input/i8042.h"
  24 #include "hw/char/serial.h"
  25 #include "trace.h"
  26
  27 static void isa_superio_realize(DeviceState *dev, Error **errp)
  28 {
  29     ISASuperIODevice *sio = ISA_SUPERIO(dev);
  30     ISASuperIOClass *k = ISA_SUPERIO_GET_CLASS(sio);
  31     ISABus *bus = isa_bus_from_device(ISA_DEVICE(dev));
  32     ISADevice *isa;
  33     DeviceState *d;
  34     Chardev *chr;
  35     DriveInfo *fd[MAX_FD];
  36     char *name;
  37     int i;
  38
  39     /* Parallel port */
  40     for (i = 0; i < k->parallel.count; i++) {
  41         if (i >= ARRAY_SIZE(sio->parallel)) {
  42             warn_report("superio: ignoring %td parallel controllers",
  43                         k->parallel.count - ARRAY_SIZE(sio->parallel));
  44             break;
  45         }
  46         if (!k->parallel.is_enabled || k->parallel.is_enabled(sio, i)) {
  47             /* FIXME use a qdev chardev prop instead of parallel_hds[] */
  48             chr = parallel_hds[i];
  49             if (chr == NULL) {
  50                 name = g_strdup_printf("discarding-parallel%d", i);
  51                 chr = qemu_chr_new(name, "null", NULL);
  52             } else {
  53                 name = g_strdup_printf("parallel%d", i);
  54             }
  55             isa = isa_new("isa-parallel");
  56             d = DEVICE(isa);
  57             qdev_prop_set_uint32(d, "index", i);
  58             if (k->parallel.get_iobase) {
  59                 qdev_prop_set_uint32(d, "iobase",
  60                                      k->parallel.get_iobase(sio, i));
  61             }
  62             if (k->parallel.get_irq) {
  63                 qdev_prop_set_uint32(d, "irq", k->parallel.get_irq(sio, i));
  64             }
  65             qdev_prop_set_chr(d, "chardev", chr);
  66             object_property_add_child(OBJECT(dev), name, OBJECT(isa));
  67             isa_realize_and_unref(isa, bus, &error_fatal);
  68             sio->parallel[i] = isa;
  69             trace_superio_create_parallel(i,
  70                                           k->parallel.get_iobase ?
  71                                           k->parallel.get_iobase(sio, i) : -1,
  72                                           k->parallel.get_irq ?
  73                                           k->parallel.get_irq(sio, i) : -1);
  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_new(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             object_property_add_child(OBJECT(dev), name, OBJECT(isa));
 106             isa_realize_and_unref(isa, bus, &error_fatal);
 107             sio->serial[i] = isa;
 108             trace_superio_create_serial(i,
 109                                         k->serial.get_iobase ?
 110                                         k->serial.get_iobase(sio, i) : -1,
 111                                         k->serial.get_irq ?
 112                                         k->serial.get_irq(sio, i) : -1);
 113             g_free(name);
 114         }
 115     }
 116
 117     /* Floppy disc */
 118     if (!k->floppy.is_enabled || k->floppy.is_enabled(sio, 0)) {
 119         isa = isa_new(TYPE_ISA_FDC);
 120         d = DEVICE(isa);
 121         if (k->floppy.get_iobase) {
 122             qdev_prop_set_uint32(d, "iobase", k->floppy.get_iobase(sio, 0));
 123         }
 124         if (k->floppy.get_irq) {
 125             qdev_prop_set_uint32(d, "irq", k->floppy.get_irq(sio, 0));
 126         }
 127         /* FIXME use a qdev drive property instead of drive_get() */
 128         for (i = 0; i < MAX_FD; i++) {
 129             fd[i] = drive_get(IF_FLOPPY, 0, i);
 130         }
 131         object_property_add_child(OBJECT(sio), "isa-fdc", OBJECT(isa));
 132         isa_realize_and_unref(isa, bus, &error_fatal);
 133         isa_fdc_init_drives(isa, fd);
 134         sio->floppy = isa;
 135         trace_superio_create_floppy(0,
 136                                     k->floppy.get_iobase ?
 137                                     k->floppy.get_iobase(sio, 0) : -1,
 138                                     k->floppy.get_irq ?
 139                                     k->floppy.get_irq(sio, 0) : -1);
 140     }
 141
 142     /* Keyboard, mouse */
 143     isa = isa_new(TYPE_I8042);
 144     object_property_add_child(OBJECT(sio), TYPE_I8042, OBJECT(isa));
 145     isa_realize_and_unref(isa, bus, &error_fatal);
 146     sio->kbc = isa;
 147
 148     /* IDE */
 149     if (k->ide.count && (!k->ide.is_enabled || k->ide.is_enabled(sio, 0))) {
 150         isa = isa_new("isa-ide");
 151         d = DEVICE(isa);
 152         if (k->ide.get_iobase) {
 153             qdev_prop_set_uint32(d, "iobase", k->ide.get_iobase(sio, 0));
 154         }
 155         if (k->ide.get_iobase) {
 156             qdev_prop_set_uint32(d, "iobase2", k->ide.get_iobase(sio, 1));
 157         }
 158         if (k->ide.get_irq) {
 159             qdev_prop_set_uint32(d, "irq", k->ide.get_irq(sio, 0));
 160         }
 161         object_property_add_child(OBJECT(sio), "isa-ide", OBJECT(isa));
 162         isa_realize_and_unref(isa, bus, &error_fatal);
 163         sio->ide = isa;
 164         trace_superio_create_ide(0,
 165                                  k->ide.get_iobase ?
 166                                  k->ide.get_iobase(sio, 0) : -1,
 167                                  k->ide.get_irq ?
 168                                  k->ide.get_irq(sio, 0) : -1);
 169     }
 170 }
 171
 172 static void isa_superio_class_init(ObjectClass *oc, void *data)
 173 {
 174     DeviceClass *dc = DEVICE_CLASS(oc);
 175
 176     dc->realize = isa_superio_realize;
 177     /* Reason: Uses parallel_hds[0] in realize(), so it can't be used twice */
 178     dc->user_creatable = false;
 179 }
 180
 181 static const TypeInfo isa_superio_type_info = {
 182     .name = TYPE_ISA_SUPERIO,
 183     .parent = TYPE_ISA_DEVICE,
 184     .abstract = true,
 185     .class_size = sizeof(ISASuperIOClass),
 186     .class_init = isa_superio_class_init,
 187 };
 188
 189 /* SMS FDC37M817 Super I/O */
 190 static void fdc37m81x_class_init(ObjectClass *klass, void *data)
 191 {
 192     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
 193
 194     sc->serial.count = 2; /* NS16C550A */
 195     sc->parallel.count = 1;
 196     sc->floppy.count = 1; /* SMSC 82077AA Compatible */
 197     sc->ide.count = 0;
 198 }
 199
 200 static const TypeInfo fdc37m81x_type_info = {
 201     .name          = TYPE_FDC37M81X_SUPERIO,
 202     .parent        = TYPE_ISA_SUPERIO,
 203     .instance_size = sizeof(ISASuperIODevice),
 204     .class_init    = fdc37m81x_class_init,
 205 };
 206
 207 static void isa_superio_register_types(void)
 208 {
 209     type_register_static(&isa_superio_type_info);
 210     type_register_static(&fdc37m81x_type_info);
 211 }
 212
 213 type_init(isa_superio_register_types)