74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
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/*
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* Virtio MMIO bindings
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*
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* Copyright (c) 2011 Linaro Limited
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*
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* Author:
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* Peter Maydell <peter.maydell@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_VIRTIO_MMIO_H
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#define HW_VIRTIO_MMIO_H
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#include "hw/virtio/virtio-bus.h"
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/* QOM macros */
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/* virtio-mmio-bus */
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#define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus"
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#define VIRTIO_MMIO_BUS(obj) \
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OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_MMIO_BUS)
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#define VIRTIO_MMIO_BUS_GET_CLASS(obj) \
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OBJECT_GET_CLASS(VirtioBusClass, (obj), TYPE_VIRTIO_MMIO_BUS)
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#define VIRTIO_MMIO_BUS_CLASS(klass) \
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OBJECT_CLASS_CHECK(VirtioBusClass, (klass), TYPE_VIRTIO_MMIO_BUS)
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/* virtio-mmio */
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#define TYPE_VIRTIO_MMIO "virtio-mmio"
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#define VIRTIO_MMIO(obj) \
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OBJECT_CHECK(VirtIOMMIOProxy, (obj), TYPE_VIRTIO_MMIO)
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#define VIRT_MAGIC 0x74726976 /* 'virt' */
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#define VIRT_VERSION 2
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#define VIRT_VERSION_LEGACY 1
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#define VIRT_VENDOR 0x554D4551 /* 'QEMU' */
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typedef struct VirtIOMMIOQueue {
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uint16_t num;
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bool enabled;
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uint32_t desc[2];
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uint32_t avail[2];
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uint32_t used[2];
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} VirtIOMMIOQueue;
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typedef struct {
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/* Generic */
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SysBusDevice parent_obj;
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MemoryRegion iomem;
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qemu_irq irq;
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bool legacy;
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/* Guest accessible state needing migration and reset */
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uint32_t host_features_sel;
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uint32_t guest_features_sel;
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uint32_t guest_page_shift;
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/* virtio-bus */
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VirtioBusState bus;
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bool format_transport_address;
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/* Fields only used for non-legacy (v2) devices */
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uint32_t guest_features[2];
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VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX];
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} VirtIOMMIOProxy;
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#endif
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