hw/isa/smc37c669-superio.c

   1 /*
   2  * SMC FDC37C669 Super I/O controller
   3  *
   4  * Copyright (c) 2018 Philippe Mathieu-Daudé
   5  *
   6  * This code is licensed under the GNU GPLv2 and later.
   7  * See the COPYING file in the top-level directory.
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "hw/isa/superio.h"
  13 #include "qemu/module.h"
  14
  15 /* UARTs (compatible with NS16450 or PC16550) */
  16
  17 static bool is_serial_enabled(ISASuperIODevice *sio, uint8_t index)
  18 {
  19     return index < 2;
  20 }
  21
  22 static uint16_t get_serial_iobase(ISASuperIODevice *sio, uint8_t index)
  23 {
  24     return index ? 0x2f8 : 0x3f8;
  25 }
  26
  27 static unsigned int get_serial_irq(ISASuperIODevice *sio, uint8_t index)
  28 {
  29     return index ? 3 : 4;
  30 }
  31
  32 /* Parallel port */
  33
  34 static bool is_parallel_enabled(ISASuperIODevice *sio, uint8_t index)
  35 {
  36     return index < 1;
  37 }
  38
  39 static uint16_t get_parallel_iobase(ISASuperIODevice *sio, uint8_t index)
  40 {
  41     return 0x378;
  42 }
  43
  44 static unsigned int get_parallel_irq(ISASuperIODevice *sio, uint8_t index)
  45 {
  46     return 7;
  47 }
  48
  49 static unsigned int get_parallel_dma(ISASuperIODevice *sio, uint8_t index)
  50 {
  51     return 3;
  52 }
  53
  54 /* Diskette controller (Software compatible with the Intel PC8477) */
  55
  56 static bool is_fdc_enabled(ISASuperIODevice *sio, uint8_t index)
  57 {
  58     return index < 1;
  59 }
  60
  61 static uint16_t get_fdc_iobase(ISASuperIODevice *sio, uint8_t index)
  62 {
  63     return 0x3f0;
  64 }
  65
  66 static unsigned int get_fdc_irq(ISASuperIODevice *sio, uint8_t index)
  67 {
  68     return 6;
  69 }
  70
  71 static unsigned int get_fdc_dma(ISASuperIODevice *sio, uint8_t index)
  72 {
  73     return 2;
  74 }
  75
  76 static void smc37c669_class_init(ObjectClass *klass, void *data)
  77 {
  78     ISASuperIOClass *sc = ISA_SUPERIO_CLASS(klass);
  79
  80     sc->parallel = (ISASuperIOFuncs){
  81         .count = 1,
  82         .is_enabled = is_parallel_enabled,
  83         .get_iobase = get_parallel_iobase,
  84         .get_irq    = get_parallel_irq,
  85         .get_dma    = get_parallel_dma,
  86     };
  87     sc->serial = (ISASuperIOFuncs){
  88         .count = 2,
  89         .is_enabled = is_serial_enabled,
  90         .get_iobase = get_serial_iobase,
  91         .get_irq    = get_serial_irq,
  92     };
  93     sc->floppy = (ISASuperIOFuncs){
  94         .count = 1,
  95         .is_enabled = is_fdc_enabled,
  96         .get_iobase = get_fdc_iobase,
  97         .get_irq    = get_fdc_irq,
  98         .get_dma    = get_fdc_dma,
  99     };
 100     sc->ide.count = 0;
 101 }
 102
 103 static const TypeInfo smc37c669_type_info = {
 104     .name          = TYPE_SMC37C669_SUPERIO,
 105     .parent        = TYPE_ISA_SUPERIO,
 106     .instance_size = sizeof(ISASuperIODevice),
 107     .class_size    = sizeof(ISASuperIOClass),
 108     .class_init    = smc37c669_class_init,
 109 };
 110
 111 static void smc37c669_register_types(void)
 112 {
 113     type_register_static(&smc37c669_type_info);
 114 }
 115
 116 type_init(smc37c669_register_types)