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 10b6a0aa05SPeter Maydell #include "qemu/osdep.h" 11e28bee8eSPaolo Bonzini #include "hw/isa/isa.h" 12*a27bd6c7SMarkus Armbruster #include "hw/qdev-properties.h" 130b8fa32fSMarkus Armbruster #include "qemu/module.h" 14e28bee8eSPaolo Bonzini 15e28bee8eSPaolo Bonzini #define TYPE_ISA_DEBUG_EXIT_DEVICE "isa-debug-exit" 16e28bee8eSPaolo Bonzini #define ISA_DEBUG_EXIT_DEVICE(obj) \ 17e28bee8eSPaolo Bonzini OBJECT_CHECK(ISADebugExitState, (obj), TYPE_ISA_DEBUG_EXIT_DEVICE) 18e28bee8eSPaolo Bonzini 19e28bee8eSPaolo Bonzini typedef struct ISADebugExitState { 20e28bee8eSPaolo Bonzini ISADevice parent_obj; 21e28bee8eSPaolo Bonzini 22e28bee8eSPaolo Bonzini uint32_t iobase; 23e28bee8eSPaolo Bonzini uint32_t iosize; 24e28bee8eSPaolo Bonzini MemoryRegion io; 25e28bee8eSPaolo Bonzini } ISADebugExitState; 26e28bee8eSPaolo Bonzini 27af71743aSLi Qiang static uint64_t debug_exit_read(void *opaque, hwaddr addr, unsigned size) 28af71743aSLi Qiang { 29af71743aSLi Qiang return 0; 30af71743aSLi Qiang } 31af71743aSLi Qiang 32e28bee8eSPaolo Bonzini static void debug_exit_write(void *opaque, hwaddr addr, uint64_t val, 33e28bee8eSPaolo Bonzini unsigned width) 34e28bee8eSPaolo Bonzini { 35e28bee8eSPaolo Bonzini exit((val << 1) | 1); 36e28bee8eSPaolo Bonzini } 37e28bee8eSPaolo Bonzini 38e28bee8eSPaolo Bonzini static const MemoryRegionOps debug_exit_ops = { 39af71743aSLi Qiang .read = debug_exit_read, 40e28bee8eSPaolo Bonzini .write = debug_exit_write, 41e28bee8eSPaolo Bonzini .valid.min_access_size = 1, 42e28bee8eSPaolo Bonzini .valid.max_access_size = 4, 43e28bee8eSPaolo Bonzini .endianness = DEVICE_LITTLE_ENDIAN, 44e28bee8eSPaolo Bonzini }; 45e28bee8eSPaolo Bonzini 46db895a1eSAndreas Färber static void debug_exit_realizefn(DeviceState *d, Error **errp) 47e28bee8eSPaolo Bonzini { 48db895a1eSAndreas Färber ISADevice *dev = ISA_DEVICE(d); 49db895a1eSAndreas Färber ISADebugExitState *isa = ISA_DEBUG_EXIT_DEVICE(d); 50e28bee8eSPaolo Bonzini 513c161542SPaolo Bonzini memory_region_init_io(&isa->io, OBJECT(dev), &debug_exit_ops, isa, 52e28bee8eSPaolo Bonzini TYPE_ISA_DEBUG_EXIT_DEVICE, isa->iosize); 53e28bee8eSPaolo Bonzini memory_region_add_subregion(isa_address_space_io(dev), 54e28bee8eSPaolo Bonzini isa->iobase, &isa->io); 55e28bee8eSPaolo Bonzini } 56e28bee8eSPaolo Bonzini 57e28bee8eSPaolo Bonzini static Property debug_exit_properties[] = { 58c7bcc85dSPaolo Bonzini DEFINE_PROP_UINT32("iobase", ISADebugExitState, iobase, 0x501), 59c7bcc85dSPaolo Bonzini DEFINE_PROP_UINT32("iosize", ISADebugExitState, iosize, 0x02), 60e28bee8eSPaolo Bonzini DEFINE_PROP_END_OF_LIST(), 61e28bee8eSPaolo Bonzini }; 62e28bee8eSPaolo Bonzini 63e28bee8eSPaolo Bonzini static void debug_exit_class_initfn(ObjectClass *klass, void *data) 64e28bee8eSPaolo Bonzini { 65e28bee8eSPaolo Bonzini DeviceClass *dc = DEVICE_CLASS(klass); 66db895a1eSAndreas Färber 67db895a1eSAndreas Färber dc->realize = debug_exit_realizefn; 68e28bee8eSPaolo Bonzini dc->props = debug_exit_properties; 69125ee0edSMarcel Apfelbaum set_bit(DEVICE_CATEGORY_MISC, dc->categories); 70e28bee8eSPaolo Bonzini } 71e28bee8eSPaolo Bonzini 72e28bee8eSPaolo Bonzini static const TypeInfo debug_exit_info = { 73e28bee8eSPaolo Bonzini .name = TYPE_ISA_DEBUG_EXIT_DEVICE, 74e28bee8eSPaolo Bonzini .parent = TYPE_ISA_DEVICE, 75e28bee8eSPaolo Bonzini .instance_size = sizeof(ISADebugExitState), 76e28bee8eSPaolo Bonzini .class_init = debug_exit_class_initfn, 77e28bee8eSPaolo Bonzini }; 78e28bee8eSPaolo Bonzini 79e28bee8eSPaolo Bonzini static void debug_exit_register_types(void) 80e28bee8eSPaolo Bonzini { 81e28bee8eSPaolo Bonzini type_register_static(&debug_exit_info); 82e28bee8eSPaolo Bonzini } 83e28bee8eSPaolo Bonzini 84e28bee8eSPaolo Bonzini type_init(debug_exit_register_types) 85