| 1 | /* $Id: Virtio-solaris.h 34233 2010-11-22 11:25:55Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox Guest Additions: Virtio Driver for Solaris, header.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 | #ifndef ___Virtio_solaris_h
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| 28 | #define ___Virtio_solaris_h
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| 29 |
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| 30 | #include <sys/sunddi.h>
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| 31 |
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| 32 | /** Release log descriptive prefix. */
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| 33 | #define VIRTIOLOGNAME "Virtio"
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| 34 | /** Buffer continues via the Next field */
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| 35 | #define VIRTIO_FLAGS_RING_DESC_NEXT RT_BIT(0)
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| 36 | /** Buffer is write-only, else is read-only. */
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| 37 | #define VIRTIO_FLAGS_RING_DESC_WRITE RT_BIT(1)
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| 38 | /** Indirect buffer (buffer contains list of buffer descriptors) */
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| 39 | #define VIRTIO_FLAGS_RING_DESC_INDIRECT RT_BIT(2)
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| 40 |
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| 41 | /* Values from our Virtio.h */
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| 42 | #define VIRTIO_PCI_STATUS_ACK 0x01
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| 43 | #define VIRTIO_PCI_STATUS_DRV 0x02
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| 44 | #define VIRTIO_PCI_STATUS_DRV_OK 0x04
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| 45 | #define VIRTIO_PCI_STATUS_FAILED 0x80
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| 46 |
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| 47 | /**
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| 48 | * The ring descriptor table refers to the buffers the guest is using for the
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| 49 | * device.
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| 50 | */
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| 51 | struct VirtioRingDesc
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| 52 | {
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| 53 | uint64_t AddrBuf; /* Physical address of buffer. */
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| 54 | uint32_t cbBuf; /* Length of the buffer in bytes. */
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| 55 | uint16_t fFlags; /* Flags of the next buffer. */
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| 56 | uint16_t Next; /* Index of the next buffer. */
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| 57 | };
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| 58 | typedef struct VirtioRingDesc VIRTIORINGDESC;
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| 59 | typedef VIRTIORINGDESC *PVIRTIORINGDESC;
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| 60 |
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| 61 | /**
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| 62 | * The available ring refers to what descriptors are being offered to the
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| 63 | * device.
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| 64 | */
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| 65 | struct VirtioRingAvail
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| 66 | {
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| 67 | uint16_t fFlags; /* Interrupt supression flag. */
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| 68 | uint16_t Index; /* Index of available ring. */
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| 69 | uint16_t aRings[1]; /* Array of indices into descriptor table. */
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| 70 | };
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| 71 | typedef struct VirtioRingAvail VIRTIORINGAVAIL;
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| 72 | typedef VIRTIORINGAVAIL *PVIRTIORINGAVAIL;
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| 73 |
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| 74 | /**
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| 75 | * The used ring refers to the buffers the device is done using them. The
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| 76 | * element is a pair-descriptor refers to the buffer once the device is done
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| 77 | * with the buffer.
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| 78 | */
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| 79 | struct VirtioRingUsedElem
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| 80 | {
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| 81 | uint32_t Index; /* Index of start of used descriptor chain. */
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| 82 | uint32_t cbElem; /* Number of bytes written into the buffer. */
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| 83 | };
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| 84 | typedef struct VirtioRingUsedElem VIRTIORINGUSEDELEM;
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| 85 | typedef VIRTIORINGUSEDELEM *PVIRTIORINGUSEDELEM;
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| 86 |
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| 87 | /**
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| 88 | * The Virtio Ring which contains the descriptors.
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| 89 | */
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| 90 | struct VirtioRing
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| 91 | {
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| 92 | uint_t cDesc; /* Number of descriptors. */
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| 93 | PVIRTIORINGDESC pRingDesc; /* Pointer to ring descriptor. */
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| 94 | PVIRTIORINGAVAIL pRingAvail; /* Pointer to available ring. */
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| 95 | PVIRTIORINGUSEDELEM pRingUsedElem; /* Pointer to used ring element. */
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| 96 | };
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| 97 | typedef struct VirtioRing VIRTIORING;
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| 98 | typedef VIRTIORING *PVIRTIORING;
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| 99 |
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| 100 | struct VirtioDevice;
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| 101 | struct VirtioQueue;
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| 102 |
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| 103 | typedef void *(*PFNVIRTIOALLOC)(struct VirtioDevice *pDevice);
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| 104 | typedef void (*PFNVIRTIOFREE)(struct VirtioDevice *pDevice);
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| 105 | typedef int (*PFNVIRTIOATTACH)(struct VirtioDevice *pDevice);
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| 106 | typedef int (*PFNVIRTIODETACH)(struct VirtioDevice *pDevice);
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| 107 | typedef uint32_t (*PFNVIRTIOGETFEATURES)(struct VirtioDevice *pDevice);
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| 108 | typedef void (*PFNVIRTIOSETFEATURES)(struct VirtioDevice *pDevice, uint32_t fFeatures);
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| 109 | typedef void (*PFNVIRTIOGET)(struct VirtioDevice *pDevice, off_t off, void *pv, size_t cb);
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| 110 | typedef void (*PFNVIRTIOSET)(struct VirtioDevice *pDevice, off_t off, void *pv, size_t cb);
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| 111 | typedef void *(*PFNVIRTIOGETQUEUE)(struct VirtioDevice *pDevice, struct VirtioQueue *pQueue);
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| 112 | typedef void (*PFNVIRTIOPUTQUEUE)(struct VirtioDevice *pDevice, struct VirtioQueue *pQueue);
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| 113 | typedef int (*PFNVIRTIONOTIFYQUEUE)(struct VirtioDevice *pDevice, struct VirtioQueue *pQueue);
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| 114 | typedef void (*PFNVIRTIOSETSTATUS)(struct VirtioDevice *pDevice, uint8_t Status);
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| 115 |
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| 116 | /**
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| 117 | * Virtio device operations.
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| 118 | */
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| 119 | struct VirtioDeviceOps
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| 120 | {
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| 121 | PFNVIRTIOALLOC pfnAlloc; /* Device alloc. */
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| 122 | PFNVIRTIOFREE pfnFree; /* Device free. */
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| 123 | PFNVIRTIOATTACH pfnAttach; /* Device attach. */
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| 124 | PFNVIRTIODETACH pfnDetach; /* Device detach. */
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| 125 | };
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| 126 | typedef struct VirtioDeviceOps VIRTIODEVICEOPS;
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| 127 | typedef VIRTIODEVICEOPS *PVIRTIODEVICEOPS;
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| 128 |
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| 129 | /**
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| 130 | * Hypervisor access operations.
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| 131 | */
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| 132 | struct VirtioHyperOps
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| 133 | {
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| 134 | PFNVIRTIOALLOC pfnAlloc; /* Hypervisor alloc. */
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| 135 | PFNVIRTIOFREE pfnFree; /* Hypervisor free */
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| 136 | PFNVIRTIOATTACH pfnAttach; /* Hypervisor attach. */
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| 137 | PFNVIRTIODETACH pfnDetach; /* Hypervisor detach. */
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| 138 | PFNVIRTIOGETFEATURES pfnGetFeatures; /* Hypervisor get features. */
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| 139 | PFNVIRTIOSETFEATURES pfnSetFeatures; /* Hypervisor set features. */
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| 140 | PFNVIRTIONOTIFYQUEUE pfnNotifyQueue; /* Hypervisor notify queue. */
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| 141 | PFNVIRTIOGET pfnGet; /* Hypervisor get. */
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| 142 | PFNVIRTIOSET pfnSet; /* Hypervisor set. */
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| 143 | PFNVIRTIOGETQUEUE pfnGetQueue; /* Hypervisor get queue. */
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| 144 | PFNVIRTIOPUTQUEUE pfnPutQueue; /* Hypervisor put queue. */
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| 145 | PFNVIRTIOSETSTATUS pfnSetStatus; /* Hypervisor set status. */
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| 146 | };
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| 147 | typedef struct VirtioHyperOps VIRTIOHYPEROPS;
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| 148 | typedef VIRTIOHYPEROPS *PVIRTIOHYPEROPS;
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| 149 |
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| 150 | /**
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| 151 | * Virtio Queue into which buffers are posted.
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| 152 | */
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| 153 | struct VirtioQueue
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| 154 | {
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| 155 | VIRTIORING Ring; /* Ring buffer of this queue. */
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| 156 | uint16_t cBufs; /* Number of pushed, unnotified buffers. */
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| 157 | uint16_t FreeHeadIndex; /* Index of head of free list. */
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| 158 | uint16_t QueueIndex; /* Index of this queue. */
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| 159 | caddr_t pQueue; /* Allocated DMA region for queue. */
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| 160 | void *pvData; /* Queue private data. */
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| 161 | };
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| 162 | typedef struct VirtioQueue VIRTIOQUEUE;
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| 163 | typedef VIRTIOQUEUE *PVIRTIOQUEUE;
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| 164 |
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| 165 | /**
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| 166 | * Virtio device descriptor, common to all Virtio devices.
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| 167 | */
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| 168 | struct VirtioDevice
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| 169 | {
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| 170 | dev_info_t *pDip; /* OS device info. */
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| 171 | PVIRTIODEVICEOPS pDeviceOps; /* Device hooks. */
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| 172 | void *pvDevice; /* Device opaque data. */
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| 173 | PVIRTIOHYPEROPS pHyperOps; /* Hypervisor hooks. */
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| 174 | void *pvHyper; /* Hypervisor opaque data. */
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| 175 | uint32_t fHostFeatures; /* Features provided by the host. */
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| 176 | };
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| 177 | typedef struct VirtioDevice VIRTIODEVICE;
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| 178 | typedef VIRTIODEVICE *PVIRTIODEVICE;
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| 179 |
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| 180 |
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| 181 | int VirtioAttach(dev_info_t *pDip, ddi_attach_cmd_t enmCmd, PVIRTIODEVICEOPS pDeviceOps, PVIRTIOHYPEROPS pHyperOps);
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| 182 | int VirtioDetach(dev_info_t *pDip, ddi_detach_cmd_t enmCmd);
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| 183 |
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| 184 | PVIRTIOQUEUE VirtioGetQueue(PVIRTIODEVICE pDevice, uint16_t Index);
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| 185 | void VirtioPutQueue(PVIRTIODEVICE pDevice, PVIRTIOQUEUE pQueue);
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| 186 |
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| 187 | void VirtioRingInit(PVIRTIOQUEUE pQueue, uint_t cDescs, caddr_t virtBuf, ulong_t Align);
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| 188 | int VirtioRingPush(PVIRTIOQUEUE pQueue, paddr_t physBuf, uint32_t cbBuf, uint16_t fFlags);
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| 189 | size_t VirtioRingSize(uint64_t cElements, ulong_t Align);
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| 190 |
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| 191 | #endif
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| 192 |
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