| 1 | /* $Id: DrvHostBase.h 44528 2013-02-04 14:27:54Z vboxsync $ */
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| 2 | /** @file
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| 3 | * DrvHostBase - Host base drive access driver.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2011 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 |
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| 18 | #ifndef __HostDrvBase_h__
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| 19 | #define __HostDrvBase_h__
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| 20 |
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| 21 | #include <VBox/cdefs.h>
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| 22 |
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| 23 | RT_C_DECLS_BEGIN
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| 24 |
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| 25 |
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| 26 | /** Pointer to host base drive access driver instance data. */
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| 27 | typedef struct DRVHOSTBASE *PDRVHOSTBASE;
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| 28 | /**
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| 29 | * Host base drive access driver instance data.
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| 30 | *
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| 31 | * @implements PDMIMOUNT
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| 32 | * @implements PDMIBLOCKBIOS
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| 33 | * @implements PDMIBLOCK
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| 34 | */
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| 35 | typedef struct DRVHOSTBASE
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| 36 | {
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| 37 | /** Critical section used to serialize access to the handle and other
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| 38 | * members of this struct. */
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| 39 | RTCRITSECT CritSect;
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| 40 | /** Pointer driver instance. */
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| 41 | PPDMDRVINS pDrvIns;
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| 42 | /** Drive type. */
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| 43 | PDMBLOCKTYPE enmType;
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| 44 | /** Visible to the BIOS. */
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| 45 | bool fBiosVisible;
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| 46 | /** The configuration readonly value. */
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| 47 | bool fReadOnlyConfig;
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| 48 | /** The current readonly status. */
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| 49 | bool fReadOnly;
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| 50 | /** Flag whether failure to attach is an error or not. */
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| 51 | bool fAttachFailError;
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| 52 | /** Flag whether to keep instance working (as unmounted though). */
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| 53 | bool fKeepInstance;
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| 54 | /** Device name (MMHeap). */
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| 55 | char *pszDevice;
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| 56 | /** Device name to open (RTStrFree). */
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| 57 | char *pszDeviceOpen;
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| 58 | #ifdef RT_OS_SOLARIS
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| 59 | /** Device name of raw device (RTStrFree). */
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| 60 | char *pszRawDeviceOpen;
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| 61 | #endif
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| 62 | /** Uuid of the drive. */
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| 63 | RTUUID Uuid;
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| 64 |
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| 65 | /** Pointer to the block port interface above us. */
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| 66 | PPDMIBLOCKPORT pDrvBlockPort;
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| 67 | /** Pointer to the mount notify interface above us. */
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| 68 | PPDMIMOUNTNOTIFY pDrvMountNotify;
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| 69 | /** Our block interface. */
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| 70 | PDMIBLOCK IBlock;
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| 71 | /** Our block interface. */
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| 72 | PDMIBLOCKBIOS IBlockBios;
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| 73 | /** Our mountable interface. */
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| 74 | PDMIMOUNT IMount;
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| 75 |
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| 76 | /** Media present indicator. */
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| 77 | bool volatile fMediaPresent;
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| 78 | /** Locked indicator. */
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| 79 | bool fLocked;
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| 80 | /** The size of the media currently in the drive.
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| 81 | * This is invalid if no drive is in the drive. */
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| 82 | uint64_t volatile cbSize;
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| 83 | #if !defined(RT_OS_DARWIN)
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| 84 | /** The filehandle of the device. */
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| 85 | RTFILE hFileDevice;
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| 86 | #endif
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| 87 | #ifdef RT_OS_SOLARIS
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| 88 | /** The raw filehandle of the device. */
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| 89 | RTFILE hFileRawDevice;
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| 90 | #endif
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| 91 |
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| 92 | /** Handle of the poller thread. */
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| 93 | RTTHREAD ThreadPoller;
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| 94 | #ifndef RT_OS_WINDOWS
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| 95 | /** Event semaphore the thread will wait on. */
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| 96 | RTSEMEVENT EventPoller;
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| 97 | #endif
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| 98 | /** The poller interval. */
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| 99 | RTMSINTERVAL cMilliesPoller;
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| 100 | /** The shutdown indicator. */
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| 101 | bool volatile fShutdownPoller;
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| 102 |
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| 103 | /** BIOS PCHS geometry. */
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| 104 | PDMMEDIAGEOMETRY PCHSGeometry;
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| 105 | /** BIOS LCHS geometry. */
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| 106 | PDMMEDIAGEOMETRY LCHSGeometry;
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| 107 |
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| 108 | /** The number of errors that could go into the release log. (flood gate) */
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| 109 | uint32_t cLogRelErrors;
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| 110 |
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| 111 | #ifdef RT_OS_DARWIN
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| 112 | /** The master port. */
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| 113 | mach_port_t MasterPort;
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| 114 | /** The MMC-2 Device Interface. (This is only used to get the scsi task interface.) */
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| 115 | MMCDeviceInterface **ppMMCDI;
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| 116 | /** The SCSI Task Device Interface. */
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| 117 | SCSITaskDeviceInterface **ppScsiTaskDI;
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| 118 | /** The block size. Set when querying the media size. */
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| 119 | uint32_t cbBlock;
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| 120 | /** The disk arbitration session reference. NULL if we didn't have to claim & unmount the device. */
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| 121 | DASessionRef pDASession;
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| 122 | /** The disk arbitration disk reference. NULL if we didn't have to claim & unmount the device. */
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| 123 | DADiskRef pDADisk;
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| 124 | #endif
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| 125 |
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| 126 | #ifdef RT_OS_WINDOWS
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| 127 | /** Handle to the window we use to catch the device change broadcast messages. */
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| 128 | volatile HWND hwndDeviceChange;
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| 129 | /** The unit mask. */
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| 130 | DWORD fUnitMask;
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| 131 | #endif
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| 132 |
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| 133 | #ifdef RT_OS_LINUX
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| 134 | /** Double buffer required for ioctl with the Linux kernel as long as we use
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| 135 | * remap_pfn_range() instead of vm_insert_page(). */
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| 136 | uint8_t *pbDoubleBuffer;
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| 137 | #endif
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| 138 |
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| 139 | #ifdef RT_OS_FREEBSD
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| 140 | /** The block size. Set when querying the media size. */
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| 141 | uint32_t cbBlock;
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| 142 | /** SCSI bus number. */
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| 143 | path_id_t ScsiBus;
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| 144 | /** target ID of the passthrough device. */
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| 145 | target_id_t ScsiTargetID;
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| 146 | /** LUN of the passthrough device. */
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| 147 | lun_id_t ScsiLunID;
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| 148 | #endif
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| 149 |
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| 150 | /**
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| 151 | * Performs the locking / unlocking of the device.
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| 152 | *
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| 153 | * This callback pointer should be set to NULL if the device doesn't support this action.
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| 154 | *
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| 155 | * @returns VBox status code.
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| 156 | * @param pThis Pointer to the instance data.
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| 157 | * @param fLock Set if locking, clear if unlocking.
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| 158 | */
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| 159 | DECLCALLBACKMEMBER(int, pfnDoLock)(PDRVHOSTBASE pThis, bool fLock);
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| 160 |
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| 161 | /**
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| 162 | * Queries the media size.
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| 163 | * Can also be used to perform actions on media change.
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| 164 | *
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| 165 | * This callback pointer should be set to NULL if the default action is fine for this device.
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| 166 | *
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| 167 | * @returns VBox status code.
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| 168 | * @param pThis Pointer to the instance data.
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| 169 | * @param pcb Where to store the media size in bytes.
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| 170 | */
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| 171 | DECLCALLBACKMEMBER(int, pfnGetMediaSize)(PDRVHOSTBASE pThis, uint64_t *pcb);
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| 172 |
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| 173 | /***
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| 174 | * Performs the polling operation.
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| 175 | *
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| 176 | * @returns VBox status code. (Failure means retry.)
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| 177 | * @param pThis Pointer to the instance data.
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| 178 | */
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| 179 | DECLCALLBACKMEMBER(int, pfnPoll)(PDRVHOSTBASE pThis);
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| 180 | } DRVHOSTBASE;
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| 181 |
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| 182 |
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| 183 | int DRVHostBaseInitData(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, PDMBLOCKTYPE enmType);
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| 184 | int DRVHostBaseInitFinish(PDRVHOSTBASE pThis);
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| 185 | int DRVHostBaseMediaPresent(PDRVHOSTBASE pThis);
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| 186 | void DRVHostBaseMediaNotPresent(PDRVHOSTBASE pThis);
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| 187 | DECLCALLBACK(void) DRVHostBaseDestruct(PPDMDRVINS pDrvIns);
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| 188 | #if defined(RT_OS_DARWIN) || defined(RT_OS_FREEBSD)
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| 189 | DECLCALLBACK(int) DRVHostBaseScsiCmd(PDRVHOSTBASE pThis, const uint8_t *pbCmd, size_t cbCmd, PDMBLOCKTXDIR enmTxDir,
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| 190 | void *pvBuf, uint32_t *pcbBuf, uint8_t *pbSense, size_t cbSense, uint32_t cTimeoutMillies);
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| 191 | #endif
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| 192 |
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| 193 |
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| 194 | /** Makes a PDRVHOSTBASE out of a PPDMIMOUNT. */
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| 195 | #define PDMIMOUNT_2_DRVHOSTBASE(pInterface) ( (PDRVHOSTBASE)((uintptr_t)pInterface - RT_OFFSETOF(DRVHOSTBASE, IMount)) )
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| 196 |
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| 197 | /** Makes a PDRVHOSTBASE out of a PPDMIBLOCK. */
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| 198 | #define PDMIBLOCK_2_DRVHOSTBASE(pInterface) ( (PDRVHOSTBASE)((uintptr_t)pInterface - RT_OFFSETOF(DRVHOSTBASE, IBlock)) )
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| 199 |
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| 200 | RT_C_DECLS_END
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| 201 |
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| 202 | #endif
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