1bb355b18SGerd Hoffmann /* 2bb355b18SGerd Hoffmann * debug exit port emulation 3bb355b18SGerd Hoffmann * 4bb355b18SGerd Hoffmann * This program is free software; you can redistribute it and/or 5bb355b18SGerd Hoffmann * modify it under the terms of the GNU General Public License as 6bb355b18SGerd Hoffmann * published by the Free Software Foundation; either version 2 or 7bb355b18SGerd Hoffmann * (at your option) any later version. 8bb355b18SGerd Hoffmann */ 9bb355b18SGerd Hoffmann 1083c9f4caSPaolo Bonzini #include "hw/hw.h" 110d09e41aSPaolo Bonzini #include "hw/isa/isa.h" 12bb355b18SGerd Hoffmann 13bb355b18SGerd Hoffmann #define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit" 14bb355b18SGerd Hoffmann #define ISA_DEBUG_EXIT_DEVICE(obj) \ 15bb355b18SGerd Hoffmann OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE) 16bb355b18SGerd Hoffmann 17bb355b18SGerd Hoffmann typedef struct ISADebugExitState { 18bb355b18SGerd Hoffmann ISADevice parent_obj; 19bb355b18SGerd Hoffmann 20bb355b18SGerd Hoffmann uint32_t iobase; 21bb355b18SGerd Hoffmann uint32_t iosize; 22bb355b18SGerd Hoffmann MemoryRegion io; 23bb355b18SGerd Hoffmann } ISADebugExitState; 24bb355b18SGerd Hoffmann 25bb355b18SGerd Hoffmann static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val, 26bb355b18SGerd Hoffmann unsigned width) 27bb355b18SGerd Hoffmann { 28bb355b18SGerd Hoffmann exit((val << 1) | 1); 29bb355b18SGerd Hoffmann } 30bb355b18SGerd Hoffmann 31bb355b18SGerd Hoffmann static const MemoryRegionOps debug_exit_ops = { 32bb355b18SGerd Hoffmann .write = debug_exit_write, 33bb355b18SGerd Hoffmann .valid.min_access_size = 1, 34bb355b18SGerd Hoffmann .valid.max_access_size = 4, 35bb355b18SGerd Hoffmann .endianness = DEVICE_LITTLE_ENDIAN, 36bb355b18SGerd Hoffmann }; 37bb355b18SGerd Hoffmann 38db895a1eSAndreas Färber static void debug_exit_realizefn(DeviceState *d, Error **errp) 39bb355b18SGerd Hoffmann { 40db895a1eSAndreas Färber ISADevice *dev = ISA_DEVICE(d); 41db895a1eSAndreas Färber ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(d); 42bb355b18SGerd Hoffmann 433c161542SPaolo Bonzini memory_region_init_io(&isa->io, OBJECT(dev), &debug_exit_ops, isa, 44bb355b18SGerd Hoffmann TYPE_ISA_DEBUG_EXIT_DEVICE, isa->iosize); 45bb355b18SGerd Hoffmann memory_region_add_subregion(isa_address_space_io(dev), 46bb355b18SGerd Hoffmann isa->iobase, &isa->io); 47bb355b18SGerd Hoffmann } 48bb355b18SGerd Hoffmann 49bb355b18SGerd Hoffmann static Property debug_exit_properties[] = { 50*c7bcc85dSPaolo Bonzini DEFINE_PROP_UINT32("iobase", ISADebugExitState, iobase, 0x501), 51*c7bcc85dSPaolo Bonzini DEFINE_PROP_UINT32("iosize", ISADebugExitState, iosize, 0x02), 52bb355b18SGerd Hoffmann DEFINE_PROP_END_OF_LIST(), 53bb355b18SGerd Hoffmann }; 54bb355b18SGerd Hoffmann 55bb355b18SGerd Hoffmann static void debug_exit_class_initfn(ObjectClass *klass, void *data) 56bb355b18SGerd Hoffmann { 57bb355b18SGerd Hoffmann DeviceClass *dc = DEVICE_CLASS(klass); 58db895a1eSAndreas Färber 59db895a1eSAndreas Färber dc->realize = debug_exit_realizefn; 60bb355b18SGerd Hoffmann dc->props = debug_exit_properties; 61125ee0edSMarcel Apfelbaum set_bit(DEVICE_CATEGORY_MISC, dc->categories); 62bb355b18SGerd Hoffmann } 63bb355b18SGerd Hoffmann 648c43a6f0SAndreas Färber static const TypeInfo debug_exit_info = { 65bb355b18SGerd Hoffmann .name = TYPE_ISA_DEBUG_EXIT_DEVICE, 66bb355b18SGerd Hoffmann .parent = TYPE_ISA_DEVICE, 67bb355b18SGerd Hoffmann .instance_size = sizeof(ISADebugExitState), 68bb355b18SGerd Hoffmann .class_init = debug_exit_class_initfn, 69bb355b18SGerd Hoffmann }; 70bb355b18SGerd Hoffmann 71bb355b18SGerd Hoffmann static void debug_exit_register_types(void) 72bb355b18SGerd Hoffmann { 73bb355b18SGerd Hoffmann type_register_static(&debug_exit_info); 74bb355b18SGerd Hoffmann } 75bb355b18SGerd Hoffmann 76bb355b18SGerd Hoffmann type_init(debug_exit_register_types) 77