125ee0ed9c
The category will be used to sort the devices displayed in the command line help. Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com> Message-id: 1375107465-25767-4-git-send-email-marcel.a@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/*
|
|
* QEMU Bochs-style debug console ("port E9") emulation
|
|
*
|
|
* Copyright (c) 2003-2004 Fabrice Bellard
|
|
* Copyright (c) 2008 Citrix Systems, Inc.
|
|
* Copyright (c) Intel Corporation; author: H. Peter Anvin
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "hw/hw.h"
|
|
#include "sysemu/char.h"
|
|
#include "hw/isa/isa.h"
|
|
#include "hw/i386/pc.h"
|
|
|
|
#define TYPE_ISA_DEBUGCON_DEVICE "isa-debugcon"
|
|
#define ISA_DEBUGCON_DEVICE(obj) \
|
|
OBJECT_CHECK(ISADebugconState, (obj), TYPE_ISA_DEBUGCON_DEVICE)
|
|
|
|
//#define DEBUG_DEBUGCON
|
|
|
|
typedef struct DebugconState {
|
|
MemoryRegion io;
|
|
CharDriverState *chr;
|
|
uint32_t readback;
|
|
} DebugconState;
|
|
|
|
typedef struct ISADebugconState {
|
|
ISADevice parent_obj;
|
|
|
|
uint32_t iobase;
|
|
DebugconState state;
|
|
} ISADebugconState;
|
|
|
|
static void debugcon_ioport_write(void *opaque, hwaddr addr, uint64_t val,
|
|
unsigned width)
|
|
{
|
|
DebugconState *s = opaque;
|
|
unsigned char ch = val;
|
|
|
|
#ifdef DEBUG_DEBUGCON
|
|
printf(" [debugcon: write addr=0x%04" HWADDR_PRIx " val=0x%02" PRIx64 "]\n", addr, val);
|
|
#endif
|
|
|
|
qemu_chr_fe_write(s->chr, &ch, 1);
|
|
}
|
|
|
|
|
|
static uint64_t debugcon_ioport_read(void *opaque, hwaddr addr, unsigned width)
|
|
{
|
|
DebugconState *s = opaque;
|
|
|
|
#ifdef DEBUG_DEBUGCON
|
|
printf("debugcon: read addr=0x%04" HWADDR_PRIx "\n", addr);
|
|
#endif
|
|
|
|
return s->readback;
|
|
}
|
|
|
|
static const MemoryRegionOps debugcon_ops = {
|
|
.read = debugcon_ioport_read,
|
|
.write = debugcon_ioport_write,
|
|
.valid.min_access_size = 1,
|
|
.valid.max_access_size = 1,
|
|
.endianness = DEVICE_LITTLE_ENDIAN,
|
|
};
|
|
|
|
static void debugcon_realize_core(DebugconState *s, Error **errp)
|
|
{
|
|
if (!s->chr) {
|
|
error_setg(errp, "Can't create debugcon device, empty char device");
|
|
return;
|
|
}
|
|
|
|
qemu_chr_add_handlers(s->chr, NULL, NULL, NULL, s);
|
|
}
|
|
|
|
static void debugcon_isa_realizefn(DeviceState *dev, Error **errp)
|
|
{
|
|
ISADevice *d = ISA_DEVICE(dev);
|
|
ISADebugconState *isa = ISA_DEBUGCON_DEVICE(dev);
|
|
DebugconState *s = &isa->state;
|
|
Error *err = NULL;
|
|
|
|
debugcon_realize_core(s, &err);
|
|
if (err != NULL) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
memory_region_init_io(&s->io, OBJECT(dev), &debugcon_ops, s,
|
|
TYPE_ISA_DEBUGCON_DEVICE, 1);
|
|
memory_region_add_subregion(isa_address_space_io(d),
|
|
isa->iobase, &s->io);
|
|
}
|
|
|
|
static Property debugcon_isa_properties[] = {
|
|
DEFINE_PROP_HEX32("iobase", ISADebugconState, iobase, 0xe9),
|
|
DEFINE_PROP_CHR("chardev", ISADebugconState, state.chr),
|
|
DEFINE_PROP_HEX32("readback", ISADebugconState, state.readback, 0xe9),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void debugcon_isa_class_initfn(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->realize = debugcon_isa_realizefn;
|
|
dc->props = debugcon_isa_properties;
|
|
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
|
|
}
|
|
|
|
static const TypeInfo debugcon_isa_info = {
|
|
.name = TYPE_ISA_DEBUGCON_DEVICE,
|
|
.parent = TYPE_ISA_DEVICE,
|
|
.instance_size = sizeof(ISADebugconState),
|
|
.class_init = debugcon_isa_class_initfn,
|
|
};
|
|
|
|
static void debugcon_register_types(void)
|
|
{
|
|
type_register_static(&debugcon_isa_info);
|
|
}
|
|
|
|
type_init(debugcon_register_types)
|