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 /* Super */ 39 slot_offset = nd->slot * NUBUS_SUPER_SLOT_SIZE; 40 41 name = g_strdup_printf("nubus-super-slot-%x", nd->slot); 42 memory_region_init(&nd->super_slot_mem, OBJECT(dev), name, 43 NUBUS_SUPER_SLOT_SIZE); 44 memory_region_add_subregion(&nubus->super_slot_io, slot_offset, 45 &nd->super_slot_mem); 46 g_free(name); 47 48 /* Normal */ 49 slot_offset = nd->slot * NUBUS_SLOT_SIZE; 50 51 name = g_strdup_printf("nubus-slot-%x", nd->slot); 52 memory_region_init(&nd->slot_mem, OBJECT(dev), name, NUBUS_SLOT_SIZE); 53 memory_region_add_subregion(&nubus->slot_io, slot_offset, 54 &nd->slot_mem); 55 g_free(name); 56 57 /* Declaration ROM */ 58 if (nd->romfile != NULL) { 59 path = qemu_find_file(QEMU_FILE_TYPE_BIOS, nd->romfile); 60 if (path == NULL) { 61 path = g_strdup(nd->romfile); 62 } 63 64 size = get_image_size(path); 65 if (size < 0) { 66 error_setg(errp, "failed to find romfile \"%s\"", nd->romfile); 67 g_free(path); 68 return; 69 } else if (size == 0) { 70 error_setg(errp, "romfile \"%s\" is empty", nd->romfile); 71 g_free(path); 72 return; 73 } else if (size > NUBUS_DECL_ROM_MAX_SIZE) { 74 error_setg(errp, "romfile \"%s\" too large (maximum size 128K)", 75 nd->romfile); 76 g_free(path); 77 return; 78 } 79 80 name = g_strdup_printf("nubus-slot-%x-declaration-rom", nd->slot); 81 82 /* 83 * Ensure ROM memory region is aligned to target page size regardless 84 * of the size of the Declaration ROM image 85 */ 86 align_size = ROUND_UP(size, qemu_target_page_size()); 87 memory_region_init_rom(&nd->decl_rom, OBJECT(dev), name, align_size, 88 &error_abort); 89 rom_ptr = memory_region_get_ram_ptr(&nd->decl_rom); 90 ret = load_image_size(path, rom_ptr + (uintptr_t)(align_size - size), 91 size); 92 g_free(path); 93 g_free(name); 94 if (ret < 0) { 95 error_setg(errp, "could not load romfile \"%s\"", nd->romfile); 96 return; 97 } 98 memory_region_add_subregion(&nd->slot_mem, NUBUS_SLOT_SIZE - align_size, 99 &nd->decl_rom); 100 } 101 } 102 103 static Property nubus_device_properties[] = { 104 DEFINE_PROP_INT32("slot", NubusDevice, slot, -1), 105 DEFINE_PROP_STRING("romfile", NubusDevice, romfile), 106 DEFINE_PROP_END_OF_LIST() 107 }; 108 109 static void nubus_device_class_init(ObjectClass *oc, void *data) 110 { 111 DeviceClass *dc = DEVICE_CLASS(oc); 112 113 dc->realize = nubus_device_realize; 114 dc->bus_type = TYPE_NUBUS_BUS; 115 device_class_set_props(dc, nubus_device_properties); 116 } 117 118 static const TypeInfo nubus_device_type_info = { 119 .name = TYPE_NUBUS_DEVICE, 120 .parent = TYPE_DEVICE, 121 .abstract = true, 122 .instance_size = sizeof(NubusDevice), 123 .class_init = nubus_device_class_init, 124 }; 125 126 static void nubus_register_types(void) 127 { 128 type_register_static(&nubus_device_type_info); 129 } 130 131 type_init(nubus_register_types) 132