1 /*- 2 * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com> 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _VIRTIO_MMIO_H 34 #define _VIRTIO_MMIO_H 35 36 DECLARE_CLASS(vtmmio_driver); 37 38 struct vtmmio_virtqueue; 39 40 struct vtmmio_softc { 41 device_t dev; 42 device_t platform; 43 struct resource *res[2]; 44 45 uint64_t vtmmio_features; 46 uint32_t vtmmio_flags; 47 uint32_t vtmmio_version; 48 49 /* This "bus" will only ever have one child. */ 50 device_t vtmmio_child_dev; 51 struct virtio_feature_desc *vtmmio_child_feat_desc; 52 53 int vtmmio_nvqs; 54 struct vtmmio_virtqueue *vtmmio_vqs; 55 void *ih; 56 }; 57 58 int vtmmio_probe(device_t); 59 int vtmmio_attach(device_t); 60 61 #define VIRTIO_MMIO_MAGIC_VALUE 0x000 62 #define VIRTIO_MMIO_VERSION 0x004 63 #define VIRTIO_MMIO_DEVICE_ID 0x008 64 #define VIRTIO_MMIO_VENDOR_ID 0x00c 65 #define VIRTIO_MMIO_HOST_FEATURES 0x010 66 #define VIRTIO_MMIO_HOST_FEATURES_SEL 0x014 67 #define VIRTIO_MMIO_GUEST_FEATURES 0x020 68 #define VIRTIO_MMIO_GUEST_FEATURES_SEL 0x024 69 #define VIRTIO_MMIO_GUEST_PAGE_SIZE 0x028 /* version 1 only */ 70 #define VIRTIO_MMIO_QUEUE_SEL 0x030 71 #define VIRTIO_MMIO_QUEUE_NUM_MAX 0x034 72 #define VIRTIO_MMIO_QUEUE_NUM 0x038 73 #define VIRTIO_MMIO_QUEUE_ALIGN 0x03c /* version 1 only */ 74 #define VIRTIO_MMIO_QUEUE_PFN 0x040 /* version 1 only */ 75 #define VIRTIO_MMIO_QUEUE_READY 0x044 /* requires version 2 */ 76 #define VIRTIO_MMIO_QUEUE_NOTIFY 0x050 77 #define VIRTIO_MMIO_INTERRUPT_STATUS 0x060 78 #define VIRTIO_MMIO_INTERRUPT_ACK 0x064 79 #define VIRTIO_MMIO_STATUS 0x070 80 #define VIRTIO_MMIO_QUEUE_DESC_LOW 0x080 /* requires version 2 */ 81 #define VIRTIO_MMIO_QUEUE_DESC_HIGH 0x084 /* requires version 2 */ 82 #define VIRTIO_MMIO_QUEUE_AVAIL_LOW 0x090 /* requires version 2 */ 83 #define VIRTIO_MMIO_QUEUE_AVAIL_HIGH 0x094 /* requires version 2 */ 84 #define VIRTIO_MMIO_QUEUE_USED_LOW 0x0a0 /* requires version 2 */ 85 #define VIRTIO_MMIO_QUEUE_USED_HIGH 0x0a4 /* requires version 2 */ 86 #define VIRTIO_MMIO_CONFIG_GENERATION 0x0fc /* requires version 2 */ 87 #define VIRTIO_MMIO_CONFIG 0x100 88 #define VIRTIO_MMIO_MAGIC_VIRT 0x74726976 89 #define VIRTIO_MMIO_INT_VRING (1 << 0) 90 #define VIRTIO_MMIO_INT_CONFIG (1 << 1) 91 #define VIRTIO_MMIO_VRING_ALIGN 4096 92 93 #endif /* _VIRTIO_MMIO_H */ 94