1/* 2 * Virtio MMIO bindings 3 * 4 * Copyright (c) 2011 Linaro Limited 5 * 6 * Author: 7 * Peter Maydell <peter.maydell@linaro.org> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License; either version 2 11 * of the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License along 19 * with this program; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22#ifndef HW_VIRTIO_MMIO_H 23#define HW_VIRTIO_MMIO_H 24 25#include "hw/virtio/virtio-bus.h" 26#include "qom/object.h" 27 28/* QOM macros */ 29/* virtio-mmio-bus */ 30#define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus" 31/* This is reusing the VirtioBusState typedef from TYPE_VIRTIO_BUS */ 32DECLARE_OBJ_CHECKERS(VirtioBusState, VirtioBusClass, 33 VIRTIO_MMIO_BUS, TYPE_VIRTIO_MMIO_BUS) 34 35/* virtio-mmio */ 36#define TYPE_VIRTIO_MMIO "virtio-mmio" 37OBJECT_DECLARE_SIMPLE_TYPE(VirtIOMMIOProxy, VIRTIO_MMIO) 38 39#define VIRT_MAGIC 0x74726976 /* 'virt' */ 40#define VIRT_VERSION 2 41#define VIRT_VERSION_LEGACY 1 42#define VIRT_VENDOR 0x554D4551 /* 'QEMU' */ 43 44typedef struct VirtIOMMIOQueue { 45 uint16_t num; 46 bool enabled; 47 uint32_t desc[2]; 48 uint32_t avail[2]; 49 uint32_t used[2]; 50} VirtIOMMIOQueue; 51 52struct VirtIOMMIOProxy { 53 /* Generic */ 54 SysBusDevice parent_obj; 55 MemoryRegion iomem; 56 qemu_irq irq; 57 bool legacy; 58 /* Guest accessible state needing migration and reset */ 59 uint32_t host_features_sel; 60 uint32_t guest_features_sel; 61 uint32_t guest_page_shift; 62 /* virtio-bus */ 63 VirtioBusState bus; 64 bool format_transport_address; 65 /* Fields only used for non-legacy (v2) devices */ 66 uint32_t guest_features[2]; 67 VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX]; 68}; 69 70#endif 71