hw/timer/m48t59-isa.c

   1 /*
   2  * QEMU M48T59 and M48T08 NVRAM emulation (ISA bus interface
   3  *
   4  * Copyright (c) 2003-2005, 2007 Jocelyn Mayer
   5  * Copyright (c) 2013 Hervé Poussineau
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25
  26 #include "qemu/osdep.h"
  27 #include "hw/isa/isa.h"
  28 #include "hw/qdev-properties.h"
  29 #include "hw/timer/m48t59.h"
  30 #include "m48t59-internal.h"
  31 #include "qemu/module.h"
  32
  33 #define TYPE_M48TXX_ISA "isa-m48txx"
  34 #define M48TXX_ISA_GET_CLASS(obj) \
  35     OBJECT_GET_CLASS(M48txxISADeviceClass, (obj), TYPE_M48TXX_ISA)
  36 #define M48TXX_ISA_CLASS(klass) \
  37     OBJECT_CLASS_CHECK(M48txxISADeviceClass, (klass), TYPE_M48TXX_ISA)
  38 #define M48TXX_ISA(obj) \
  39     OBJECT_CHECK(M48txxISAState, (obj), TYPE_M48TXX_ISA)
  40
  41 typedef struct M48txxISAState {
  42     ISADevice parent_obj;
  43     M48t59State state;
  44     uint32_t io_base;
  45     MemoryRegion io;
  46 } M48txxISAState;
  47
  48 typedef struct M48txxISADeviceClass {
  49     ISADeviceClass parent_class;
  50     M48txxInfo info;
  51 } M48txxISADeviceClass;
  52
  53 static M48txxInfo m48txx_isa_info[] = {
  54     {
  55         .bus_name = "isa-m48t59",
  56         .model = 59,
  57         .size = 0x2000,
  58     }
  59 };
  60
  61 Nvram *m48t59_init_isa(ISABus *bus, uint32_t io_base, uint16_t size,
  62                        int base_year, int model)
  63 {
  64     DeviceState *dev;
  65     int i;
  66
  67     for (i = 0; i < ARRAY_SIZE(m48txx_isa_info); i++) {
  68         if (m48txx_isa_info[i].size != size ||
  69             m48txx_isa_info[i].model != model) {
  70             continue;
  71         }
  72
  73         dev = DEVICE(isa_create(bus, m48txx_isa_info[i].bus_name));
  74         qdev_prop_set_uint32(dev, "iobase", io_base);
  75         qdev_prop_set_int32(dev, "base-year", base_year);
  76         qdev_init_nofail(dev);
  77         return NVRAM(dev);
  78     }
  79
  80     assert(false);
  81     return NULL;
  82 }
  83
  84 static uint32_t m48txx_isa_read(Nvram *obj, uint32_t addr)
  85 {
  86     M48txxISAState *d = M48TXX_ISA(obj);
  87     return m48t59_read(&d->state, addr);
  88 }
  89
  90 static void m48txx_isa_write(Nvram *obj, uint32_t addr, uint32_t val)
  91 {
  92     M48txxISAState *d = M48TXX_ISA(obj);
  93     m48t59_write(&d->state, addr, val);
  94 }
  95
  96 static void m48txx_isa_toggle_lock(Nvram *obj, int lock)
  97 {
  98     M48txxISAState *d = M48TXX_ISA(obj);
  99     m48t59_toggle_lock(&d->state, lock);
 100 }
 101
 102 static Property m48t59_isa_properties[] = {
 103     DEFINE_PROP_INT32("base-year", M48txxISAState, state.base_year, 0),
 104     DEFINE_PROP_UINT32("iobase", M48txxISAState, io_base, 0x74),
 105     DEFINE_PROP_END_OF_LIST(),
 106 };
 107
 108 static void m48t59_reset_isa(DeviceState *d)
 109 {
 110     M48txxISAState *isa = M48TXX_ISA(d);
 111     M48t59State *NVRAM = &isa->state;
 112
 113     m48t59_reset_common(NVRAM);
 114 }
 115
 116 static void m48t59_isa_realize(DeviceState *dev, Error **errp)
 117 {
 118     M48txxISADeviceClass *u = M48TXX_ISA_GET_CLASS(dev);
 119     ISADevice *isadev = ISA_DEVICE(dev);
 120     M48txxISAState *d = M48TXX_ISA(dev);
 121     M48t59State *s = &d->state;
 122
 123     s->model = u->info.model;
 124     s->size = u->info.size;
 125     isa_init_irq(isadev, &s->IRQ, 8);
 126     m48t59_realize_common(s, errp);
 127     memory_region_init_io(&d->io, OBJECT(dev), &m48t59_io_ops, s, "m48t59", 4);
 128     if (d->io_base != 0) {
 129         isa_register_ioport(isadev, &d->io, d->io_base);
 130     }
 131 }
 132
 133 static void m48txx_isa_class_init(ObjectClass *klass, void *data)
 134 {
 135     DeviceClass *dc = DEVICE_CLASS(klass);
 136     NvramClass *nc = NVRAM_CLASS(klass);
 137
 138     dc->realize = m48t59_isa_realize;
 139     dc->reset = m48t59_reset_isa;
 140     dc->props = m48t59_isa_properties;
 141     nc->read = m48txx_isa_read;
 142     nc->write = m48txx_isa_write;
 143     nc->toggle_lock = m48txx_isa_toggle_lock;
 144 }
 145
 146 static void m48txx_isa_concrete_class_init(ObjectClass *klass, void *data)
 147 {
 148     M48txxISADeviceClass *u = M48TXX_ISA_CLASS(klass);
 149     M48txxInfo *info = data;
 150
 151     u->info = *info;
 152 }
 153
 154 static const TypeInfo m48txx_isa_type_info = {
 155     .name = TYPE_M48TXX_ISA,
 156     .parent = TYPE_ISA_DEVICE,
 157     .instance_size = sizeof(M48txxISAState),
 158     .abstract = true,
 159     .class_init = m48txx_isa_class_init,
 160     .interfaces = (InterfaceInfo[]) {
 161         { TYPE_NVRAM },
 162         { }
 163     }
 164 };
 165
 166 static void m48t59_isa_register_types(void)
 167 {
 168     TypeInfo isa_type_info = {
 169         .parent = TYPE_M48TXX_ISA,
 170         .class_size = sizeof(M48txxISADeviceClass),
 171         .class_init = m48txx_isa_concrete_class_init,
 172     };
 173     int i;
 174
 175     type_register_static(&m48txx_isa_type_info);
 176
 177     for (i = 0; i < ARRAY_SIZE(m48txx_isa_info); i++) {
 178         isa_type_info.name = m48txx_isa_info[i].bus_name;
 179         isa_type_info.class_data = &m48txx_isa_info[i];
 180         type_register(&isa_type_info);
 181     }
 182 }
 183
 184 type_init(m48t59_isa_register_types)