| 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 "exec/target_page.h" |
| 14 | #include "hw/core/irq.h" |
| 15 | #include "hw/core/loader.h" |
| 16 | #include "hw/nubus/nubus.h" |
| 17 | #include "qapi/error.h" |
| 18 | #include "qemu/error-report.h" |
| 19 | |
| 20 | |
| 21 | void nubus_set_irq(NubusDevice *nd, int level) |
| 22 | { |
| 23 | NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(DEVICE(nd))); |
| 24 | |
| 25 | qemu_set_irq(nubus->irqs[nd->slot], level); |
| 26 | } |
| 27 | |
| 28 | static void nubus_device_realize(DeviceState *dev, Error **errp) |
| 29 | { |
| 30 | NubusBus *nubus = NUBUS_BUS(qdev_get_parent_bus(dev)); |
| 31 | NubusDevice *nd = NUBUS_DEVICE(dev); |
| 32 | char *name, *path; |
| 33 | hwaddr slot_offset; |
| 34 | int64_t size, align_size; |
| 35 | uint8_t *rom_ptr; |
| 36 | int ret; |
| 37 | |
| 38 | if (nd->slot < 0 || nd->slot >= NUBUS_SLOT_NB) { |
| 39 | error_setg(errp, |
| 40 | "'slot' value %d out of range (must be between 0 and %d)", |
| 41 | nd->slot, NUBUS_SLOT_NB - 1); |
| 42 | return; |
| 43 | } |
| 44 | |
| 45 | /* Super */ |
| 46 | slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE; |
| 47 | |
| 48 | name = g_strdup_printf("nubus-super-slot-%x", nd->slot); |
| 49 | memory_region_init(&nd->super_slot_mem, OBJECT(dev), name, |
| 50 | NUBUS_SUPER_SLOT_SIZE); |
| 51 | memory_region_add_subregion(&nubus->super_slot_io, slot_offset, |
| 52 | &nd->super_slot_mem); |
| 53 | g_free(name); |
| 54 | |
| 55 | /* Normal */ |
| 56 | slot_offset = nd->slot * NUBUS_SLOT_SIZE; |
| 57 | |
| 58 | name = g_strdup_printf("nubus-slot-%x", nd->slot); |
| 59 | memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE); |
| 60 | memory_region_add_subregion(&nubus->slot_io, slot_offset, |
| 61 | &nd->slot_mem); |
| 62 | g_free(name); |
| 63 | |
| 64 | /* Declaration ROM */ |
| 65 | if (nd->romfile != NULL) { |
| 66 | path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile); |
| 67 | if (path == NULL) { |
| 68 | path = g_strdup(nd->romfile); |
| 69 | } |
| 70 | |
| 71 | size = get_image_size(path, NULL); |
| 72 | if (size < 0) { |
| 73 | error_setg(errp, "failed to find romfile \"%s\"", nd->romfile); |
| 74 | g_free(path); |
| 75 | return; |
| 76 | } else if (size == 0) { |
| 77 | error_setg(errp, "romfile \"%s\" is empty", nd->romfile); |
| 78 | g_free(path); |
| 79 | return; |
| 80 | } else if (size > NUBUS_DECL_ROM_MAX_SIZE) { |
| 81 | error_setg(errp, "romfile \"%s\" too large (maximum size 128K)", |
| 82 | nd->romfile); |
| 83 | g_free(path); |
| 84 | return; |
| 85 | } |
| 86 | |
| 87 | name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot); |
| 88 | |
| 89 | /* |
| 90 | * Ensure ROM memory region is aligned to target page size regardless |
| 91 | * of the size of the Declaration ROM image |
| 92 | */ |
| 93 | align_size = ROUND_UP(size, qemu_target_page_size()); |
| 94 | memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, align_size, |
| 95 | &error_abort); |
| 96 | rom_ptr = memory_region_get_ram_ptr(&nd->decl_rom); |
| 97 | ret = load_image_size(path, rom_ptr + (uintptr_t)(align_size - size), |
| 98 | size); |
| 99 | g_free(path); |
| 100 | g_free(name); |
| 101 | if (ret < 0) { |
| 102 | error_setg(errp, "could not load romfile \"%s\"", nd->romfile); |
| 103 | return; |
| 104 | } |
| 105 | memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - align_size, |
| 106 | &nd->decl_rom); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | static const Property nubus_device_properties[] = { |
| 111 | DEFINE_PROP_INT32("slot", NubusDevice, slot, -1), |
| 112 | DEFINE_PROP_STRING("romfile", NubusDevice, romfile), |
| 113 | }; |
| 114 | |
| 115 | static void nubus_device_class_init(ObjectClass *oc, const void *data) |
| 116 | { |
| 117 | DeviceClass *dc = DEVICE_CLASS(oc); |
| 118 | |
| 119 | dc->realize = nubus_device_realize; |
| 120 | dc->bus_type = TYPE_NUBUS_BUS; |
| 121 | device_class_set_props(dc, nubus_device_properties); |
| 122 | } |
| 123 | |
| 124 | static const TypeInfo nubus_device_type_info = { |
| 125 | .name = TYPE_NUBUS_DEVICE, |
| 126 | .parent = TYPE_DEVICE, |
| 127 | .abstract = true, |
| 128 | .instance_size = sizeof(NubusDevice), |
| 129 | .class_init = nubus_device_class_init, |
| 130 | }; |
| 131 | |
| 132 | static void nubus_register_types(void) |
| 133 | { |
| 134 | type_register_static(&nubus_device_type_info); |
| 135 | } |
| 136 | |
| 137 | type_init(nubus_register_types) |