hw/nubus/nubus-device.c

   1 /*
   2  * QEMU Macintosh Nubus
   3  *
   4  * Copyright (c) 2013-2018 Laurent Vivier <laurent@vivier.eu>
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7  * See the COPYING file in the top-level directory.
   8  *
   9  */
  10
  11 #include "qemu/osdep.h"
  12 #include "qemu/datadir.h"
  13 #include "hw/irq.h"
  14 #include "hw/loader.h"
  15 #include "hw/nubus/nubus.h"
  16 #include "qapi/error.h"
  17 #include "qemu/error-report.h"
  18
  19
  20 void nubus_set_irq(NubusDevice *nd, int level)
  21 {
  22     NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd)));
  23
  24     qemu_set_irq(nubus->irqs[nd->slot], level);
  25 }
  26
  27 static void nubus_device_realize(DeviceState *dev, Error **errp)
  28 {
  29     NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev));
  30     NubusDevice *nd = NUBUS_DEVICE(dev);
  31     char *name, *path;
  32     hwaddr slot_offset;
  33     int64_t size;
  34     int ret;
  35
  36     /* Super */
  37     slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE;
  38
  39     name = g_strdup_printf("nubus-super-slot-%x", nd->slot);
  40     memory_region_init(&nd->super_slot_mem, OBJECT(dev), name,
  41                        NUBUS_SUPER_SLOT_SIZE);
  42     memory_region_add_subregion(&nubus->super_slot_io, slot_offset,
  43                                 &nd->super_slot_mem);
  44     g_free(name);
  45
  46     /* Normal */
  47     slot_offset = nd->slot * NUBUS_SLOT_SIZE;
  48
  49     name = g_strdup_printf("nubus-slot-%x", nd->slot);
  50     memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE);
  51     memory_region_add_subregion(&nubus->slot_io, slot_offset,
  52                                 &nd->slot_mem);
  53     g_free(name);
  54
  55     /* Declaration ROM */
  56     if (nd->romfile != NULL) {
  57         path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile);
  58         if (path == NULL) {
  59             path = g_strdup(nd->romfile);
  60         }
  61
  62         size = get_image_size(path);
  63         if (size < 0) {
  64             error_setg(errp, "failed to find romfile \"%s\"", nd->romfile);
  65             g_free(path);
  66             return;
  67         } else if (size == 0) {
  68             error_setg(errp, "romfile \"%s\" is empty", nd->romfile);
  69             g_free(path);
  70             return;
  71         } else if (size > NUBUS_DECL_ROM_MAX_SIZE) {
  72             error_setg(errp, "romfile \"%s\" too large (maximum size 128K)",
  73                        nd->romfile);
  74             g_free(path);
  75             return;
  76         }
  77
  78         name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot);
  79         memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, size,
  80                                &error_abort);
  81         ret = load_image_mr(path, &nd->decl_rom);
  82         g_free(path);
  83         g_free(name);
  84         if (ret < 0) {
  85             error_setg(errp, "could not load romfile \"%s\"", nd->romfile);
  86             return;
  87         }
  88         memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - size,
  89                                     &nd->decl_rom);
  90     }
  91 }
  92
  93 static Property nubus_device_properties[] = {
  94     DEFINE_PROP_INT32("slot", NubusDevice, slot, -1),
  95     DEFINE_PROP_STRING("romfile", NubusDevice, romfile),
  96     DEFINE_PROP_END_OF_LIST()
  97 };
  98
  99 static void nubus_device_class_init(ObjectClass *oc, void *data)
 100 {
 101     DeviceClass *dc = DEVICE_CLASS(oc);
 102
 103     dc->realize = nubus_device_realize;
 104     dc->bus_type = TYPE_NUBUS_BUS;
 105     device_class_set_props(dc, nubus_device_properties);
 106 }
 107
 108 static const TypeInfo nubus_device_type_info = {
 109     .name = TYPE_NUBUS_DEVICE,
 110     .parent = TYPE_DEVICE,
 111     .abstract = true,
 112     .instance_size = sizeof(NubusDevice),
 113     .class_init = nubus_device_class_init,
 114 };
 115
 116 static void nubus_register_types(void)
 117 {
 118     type_register_static(&nubus_device_type_info);
 119 }
 120
 121 type_init(nubus_register_types)