1e28bee8eSPaolo Bonzini /* 2e28bee8eSPaolo Bonzini * debug exit port emulation 3e28bee8eSPaolo Bonzini * 4e28bee8eSPaolo Bonzini * This program is free software; you can redistribute it and/or 5e28bee8eSPaolo Bonzini * modify it under the terms of the GNU General Public License as 6e28bee8eSPaolo Bonzini * published by the Free Software Foundation; either version 2 or 7e28bee8eSPaolo Bonzini * (at your option) any later version. 8e28bee8eSPaolo Bonzini */ 9e28bee8eSPaolo Bonzini 10e28bee8eSPaolo Bonzini #include "hw/hw.h" 11e28bee8eSPaolo Bonzini #include "hw/isa/isa.h" 12e28bee8eSPaolo Bonzini 13e28bee8eSPaolo Bonzini #define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit" 14e28bee8eSPaolo Bonzini #define ISA_DEBUG_EXIT_DEVICE(obj) \ 15e28bee8eSPaolo Bonzini OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE) 16e28bee8eSPaolo Bonzini 17e28bee8eSPaolo Bonzini typedef struct ISADebugExitState { 18e28bee8eSPaolo Bonzini ISADevice parent_obj; 19e28bee8eSPaolo Bonzini 20e28bee8eSPaolo Bonzini uint32_t iobase; 21e28bee8eSPaolo Bonzini uint32_t iosize; 22e28bee8eSPaolo Bonzini MemoryRegion io; 23e28bee8eSPaolo Bonzini } ISADebugExitState; 24e28bee8eSPaolo Bonzini 25e28bee8eSPaolo Bonzini static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val, 26e28bee8eSPaolo Bonzini unsigned width) 27e28bee8eSPaolo Bonzini { 28e28bee8eSPaolo Bonzini exit((val << 1) | 1); 29e28bee8eSPaolo Bonzini } 30e28bee8eSPaolo Bonzini 31e28bee8eSPaolo Bonzini static const MemoryRegionOps debug_exit_ops = { 32e28bee8eSPaolo Bonzini .write = debug_exit_write, 33e28bee8eSPaolo Bonzini .valid.min_access_size = 1, 34e28bee8eSPaolo Bonzini .valid.max_access_size = 4, 35e28bee8eSPaolo Bonzini .endianness = DEVICE_LITTLE_ENDIAN, 36e28bee8eSPaolo Bonzini }; 37e28bee8eSPaolo Bonzini 38db895a1eSAndreas Färber static void debug_exit_realizefn(DeviceState *d, Error **errp) 39e28bee8eSPaolo Bonzini { 40db895a1eSAndreas Färber ISADevice *dev = ISA_DEVICE(d); 41db895a1eSAndreas Färber ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(d); 42e28bee8eSPaolo Bonzini 43*3c161542SPaolo Bonzini memory_region_init_io(&isa->io, OBJECT(dev), &debug_exit_ops, isa, 44e28bee8eSPaolo Bonzini TYPE_ISA_DEBUG_EXIT_DEVICE, isa->iosize); 45e28bee8eSPaolo Bonzini memory_region_add_subregion(isa_address_space_io(dev), 46e28bee8eSPaolo Bonzini isa->iobase, &isa->io); 47e28bee8eSPaolo Bonzini } 48e28bee8eSPaolo Bonzini 49e28bee8eSPaolo Bonzini static Property debug_exit_properties[] = { 50e28bee8eSPaolo Bonzini DEFINE_PROP_HEX32("iobase", ISADebugExitState, iobase, 0x501), 51e28bee8eSPaolo Bonzini DEFINE_PROP_HEX32("iosize", ISADebugExitState, iosize, 0x02), 52e28bee8eSPaolo Bonzini DEFINE_PROP_END_OF_LIST(), 53e28bee8eSPaolo Bonzini }; 54e28bee8eSPaolo Bonzini 55e28bee8eSPaolo Bonzini static void debug_exit_class_initfn(ObjectClass *klass, void *data) 56e28bee8eSPaolo Bonzini { 57e28bee8eSPaolo Bonzini DeviceClass *dc = DEVICE_CLASS(klass); 58db895a1eSAndreas Färber 59db895a1eSAndreas Färber dc->realize = debug_exit_realizefn; 60e28bee8eSPaolo Bonzini dc->props = debug_exit_properties; 61e28bee8eSPaolo Bonzini } 62e28bee8eSPaolo Bonzini 63e28bee8eSPaolo Bonzini static const TypeInfo debug_exit_info = { 64e28bee8eSPaolo Bonzini .name = TYPE_ISA_DEBUG_EXIT_DEVICE, 65e28bee8eSPaolo Bonzini .parent = TYPE_ISA_DEVICE, 66e28bee8eSPaolo Bonzini .instance_size = sizeof(ISADebugExitState), 67e28bee8eSPaolo Bonzini .class_init = debug_exit_class_initfn, 68e28bee8eSPaolo Bonzini }; 69e28bee8eSPaolo Bonzini 70e28bee8eSPaolo Bonzini static void debug_exit_register_types(void) 71e28bee8eSPaolo Bonzini { 72e28bee8eSPaolo Bonzini type_register_static(&debug_exit_info); 73e28bee8eSPaolo Bonzini } 74e28bee8eSPaolo Bonzini 75e28bee8eSPaolo Bonzini type_init(debug_exit_register_types) 76