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/irq.h" 15 #include "hw/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); 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 Property nubus_device_properties[] = { 111 DEFINE_PROP_INT32("slot", NubusDevice, slot, -1), 112 DEFINE_PROP_STRING("romfile", NubusDevice, romfile), 113 DEFINE_PROP_END_OF_LIST() 114 }; 115 116 static void nubus_device_class_init(ObjectClass *oc, void *data) 117 { 118 DeviceClass *dc = DEVICE_CLASS(oc); 119 120 dc->realize = nubus_device_realize; 121 dc->bus_type = TYPE_NUBUS_BUS; 122 device_class_set_props(dc, nubus_device_properties); 123 } 124 125 static const TypeInfo nubus_device_type_info = { 126 .name = TYPE_NUBUS_DEVICE, 127 .parent = TYPE_DEVICE, 128 .abstract = true, 129 .instance_size = sizeof(NubusDevice), 130 .class_init = nubus_device_class_init, 131 }; 132 133 static void nubus_register_types(void) 134 { 135 type_register_static(&nubus_device_type_info); 136 } 137 138 type_init(nubus_register_types) 139