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