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 27 /* QOM macros */ 28 /* virtio-mmio-bus */ 29 #define TYPE_VIRTIO_MMIO_BUS "virtio-mmio-bus" 30 #define VIRTIO_MMIO_BUS(obj) \ 31 OBJECT_CHECK(VirtioBusState, (obj), TYPE_VIRTIO_MMIO_BUS) 32 #define VIRTIO_MMIO_BUS_GET_CLASS(obj) \ 33 OBJECT_GET_CLASS(VirtioBusClass, (obj), TYPE_VIRTIO_MMIO_BUS) 34 #define VIRTIO_MMIO_BUS_CLASS(klass) \ 35 OBJECT_CLASS_CHECK(VirtioBusClass, (klass), TYPE_VIRTIO_MMIO_BUS) 36 37 /* virtio-mmio */ 38 #define TYPE_VIRTIO_MMIO "virtio-mmio" 39 #define VIRTIO_MMIO(obj) \ 40 OBJECT_CHECK(VirtIOMMIOProxy, (obj), TYPE_VIRTIO_MMIO) 41 42 #define VIRT_MAGIC 0x74726976 /* 'virt' */ 43 #define VIRT_VERSION 2 44 #define VIRT_VERSION_LEGACY 1 45 #define VIRT_VENDOR 0x554D4551 /* 'QEMU' */ 46 47 typedef struct VirtIOMMIOQueue { 48 uint16_t num; 49 bool enabled; 50 uint32_t desc[2]; 51 uint32_t avail[2]; 52 uint32_t used[2]; 53 } VirtIOMMIOQueue; 54 55 typedef struct { 56 /* Generic */ 57 SysBusDevice parent_obj; 58 MemoryRegion iomem; 59 qemu_irq irq; 60 bool legacy; 61 /* Guest accessible state needing migration and reset */ 62 uint32_t host_features_sel; 63 uint32_t guest_features_sel; 64 uint32_t guest_page_shift; 65 /* virtio-bus */ 66 VirtioBusState bus; 67 bool format_transport_address; 68 /* Fields only used for non-legacy (v2) devices */ 69 uint32_t guest_features[2]; 70 VirtIOMMIOQueue vqs[VIRTIO_QUEUE_MAX]; 71 } VirtIOMMIOProxy; 72 73 #endif 74