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/*
* Virtio MMIO bindings
*
* Copyright (c) 2011 Linaro Limited
*
* Author:
* Peter Maydell <peter.maydell@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License; 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/>.
*/
#ifndef HW_VIRTIO_MMIO_H
#define HW_VIRTIO_MMIO_H
#include "hw/virtio/virtio-bus.h"
#include "qom/object.h"
/* QOM macros */
/* virtio-mmio-bus */
#define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus"
#define VIRTIO_MMIO_BUS(obj) \
OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_MMIO_BUS)
#define VIRTIO_MMIO_BUS_GET_CLASS(obj) \
OBJECT_GET_CLASS(VirtioBusClass, (obj), TYPE_VIRTIO_MMIO_BUS)
#define VIRTIO_MMIO_BUS_CLASS(klass) \
OBJECT_CLASS_CHECK(VirtioBusClass, (klass), TYPE_VIRTIO_MMIO_BUS)
/* virtio-mmio */
#define TYPE_VIRTIO_MMIO "virtio-mmio"
typedef struct VirtIOMMIOProxy VirtIOMMIOProxy;
DECLARE_INSTANCE_CHECKER(VirtIOMMIOProxy, VIRTIO_MMIO,
TYPE_VIRTIO_MMIO)
#define VIRT_MAGIC 0x74726976 /* 'virt' */
#define VIRT_VERSION 2
#define VIRT_VERSION_LEGACY 1
#define VIRT_VENDOR 0x554D4551 /* 'QEMU' */
typedef struct VirtIOMMIOQueue {
uint16_t num;
bool enabled;
uint32_t desc[2];
uint32_t avail[2];
uint32_t used[2];
} VirtIOMMIOQueue;
struct VirtIOMMIOProxy {
/* Generic */
SysBusDevice parent_obj;
MemoryRegion iomem;
qemu_irq irq;
bool legacy;
/* Guest accessible state needing migration and reset */
uint32_t host_features_sel;
uint32_t guest_features_sel;
uint32_t guest_page_shift;
/* virtio-bus */
VirtioBusState bus;
bool format_transport_address;
/* Fields only used for non-legacy (v2) devices */
uint32_t guest_features[2];
VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX];
};
#endif
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