mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-01 07:21:09 +00:00
7cc2298c46
This introduces mmio_interface object which contains a MemoryRegion and can be hotplugged/hotunplugged. Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/*
|
|
* mmio_interface.c
|
|
*
|
|
* Copyright (C) 2017 : GreenSocs
|
|
* http://www.greensocs.com/ , email: info@greensocs.com
|
|
*
|
|
* Developed by :
|
|
* Frederic Konrad <fred.konrad@greensocs.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 2 of the License, or
|
|
* (at your option)any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu/log.h"
|
|
#include "trace.h"
|
|
#include "hw/qdev-properties.h"
|
|
#include "hw/misc/mmio_interface.h"
|
|
#include "qapi/error.h"
|
|
|
|
#ifndef DEBUG_MMIO_INTERFACE
|
|
#define DEBUG_MMIO_INTERFACE 0
|
|
#endif
|
|
|
|
static uint64_t mmio_interface_counter;
|
|
|
|
#define DPRINTF(fmt, ...) do { \
|
|
if (DEBUG_MMIO_INTERFACE) { \
|
|
qemu_log("mmio_interface: 0x%" PRIX64 ": " fmt, s->id, ## __VA_ARGS__);\
|
|
} \
|
|
} while (0);
|
|
|
|
static void mmio_interface_init(Object *obj)
|
|
{
|
|
MMIOInterface *s = MMIO_INTERFACE(obj);
|
|
|
|
if (DEBUG_MMIO_INTERFACE) {
|
|
s->id = mmio_interface_counter++;
|
|
}
|
|
|
|
DPRINTF("interface created\n");
|
|
s->host_ptr = 0;
|
|
s->subregion = 0;
|
|
}
|
|
|
|
static void mmio_interface_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
MMIOInterface *s = MMIO_INTERFACE(dev);
|
|
|
|
DPRINTF("realize from 0x%" PRIX64 " to 0x%" PRIX64 " map host pointer"
|
|
" %p\n", s->start, s->end, s->host_ptr);
|
|
|
|
if (!s->host_ptr) {
|
|
error_setg(errp, "host_ptr property must be set");
|
|
}
|
|
|
|
if (!s->subregion) {
|
|
error_setg(errp, "subregion property must be set");
|
|
}
|
|
|
|
memory_region_init_ram_ptr(&s->ram_mem, OBJECT(s), "ram",
|
|
s->end - s->start + 1, s->host_ptr);
|
|
memory_region_set_readonly(&s->ram_mem, s->ro);
|
|
memory_region_add_subregion(s->subregion, s->start, &s->ram_mem);
|
|
}
|
|
|
|
static void mmio_interface_unrealize(DeviceState *dev, Error **errp)
|
|
{
|
|
MMIOInterface *s = MMIO_INTERFACE(dev);
|
|
|
|
DPRINTF("unrealize from 0x%" PRIX64 " to 0x%" PRIX64 " map host pointer"
|
|
" %p\n", s->start, s->end, s->host_ptr);
|
|
memory_region_del_subregion(s->subregion, &s->ram_mem);
|
|
}
|
|
|
|
static void mmio_interface_finalize(Object *obj)
|
|
{
|
|
MMIOInterface *s = MMIO_INTERFACE(obj);
|
|
|
|
DPRINTF("finalize from 0x%" PRIX64 " to 0x%" PRIX64 " map host pointer"
|
|
" %p\n", s->start, s->end, s->host_ptr);
|
|
object_unparent(OBJECT(&s->ram_mem));
|
|
}
|
|
|
|
static Property mmio_interface_properties[] = {
|
|
DEFINE_PROP_UINT64("start", MMIOInterface, start, 0),
|
|
DEFINE_PROP_UINT64("end", MMIOInterface, end, 0),
|
|
DEFINE_PROP_PTR("host_ptr", MMIOInterface, host_ptr),
|
|
DEFINE_PROP_BOOL("ro", MMIOInterface, ro, false),
|
|
DEFINE_PROP_MEMORY_REGION("subregion", MMIOInterface, subregion),
|
|
DEFINE_PROP_END_OF_LIST(),
|
|
};
|
|
|
|
static void mmio_interface_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(oc);
|
|
|
|
dc->realize = mmio_interface_realize;
|
|
dc->unrealize = mmio_interface_unrealize;
|
|
dc->props = mmio_interface_properties;
|
|
}
|
|
|
|
static const TypeInfo mmio_interface_info = {
|
|
.name = TYPE_MMIO_INTERFACE,
|
|
.parent = TYPE_DEVICE,
|
|
.instance_size = sizeof(MMIOInterface),
|
|
.instance_init = mmio_interface_init,
|
|
.instance_finalize = mmio_interface_finalize,
|
|
.class_init = mmio_interface_class_init,
|
|
};
|
|
|
|
static void mmio_interface_register_types(void)
|
|
{
|
|
type_register_static(&mmio_interface_info);
|
|
}
|
|
|
|
type_init(mmio_interface_register_types)
|