/** @file * PDM - Pluggable Device Manager, Storage related interfaces. */ /* * Copyright (C) 2006-2017 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef ___VBox_vmm_pdmstorageifs_h #define ___VBox_vmm_pdmstorageifs_h #include #include #include RT_C_DECLS_BEGIN struct PDMISECKEY; struct PDMISECKEYHLP; /** @defgroup grp_pdm_ifs_storage PDM Storage Interfaces * @ingroup grp_pdm_interfaces * @{ */ /** Pointer to a mount interface. */ typedef struct PDMIMOUNTNOTIFY *PPDMIMOUNTNOTIFY; /** * Block interface (up). * Pair with PDMIMOUNT. */ typedef struct PDMIMOUNTNOTIFY { /** * Called when a media is mounted. * * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(void, pfnMountNotify,(PPDMIMOUNTNOTIFY pInterface)); /** * Called when a media is unmounted * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(void, pfnUnmountNotify,(PPDMIMOUNTNOTIFY pInterface)); } PDMIMOUNTNOTIFY; /** PDMIMOUNTNOTIFY interface ID. */ #define PDMIMOUNTNOTIFY_IID "fa143ac9-9fc6-498e-997f-945380a558f9" /** Pointer to mount interface. */ typedef struct PDMIMOUNT *PPDMIMOUNT; /** * Mount interface (down). * Pair with PDMIMOUNTNOTIFY. */ typedef struct PDMIMOUNT { /** * Unmount the media. * * The driver will validate and pass it on. On the rebounce it will decide whether or not to detach it self. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread The emulation thread. * @param fForce Force the unmount, even for locked media. * @param fEject Eject the medium. Only relevant for host drives. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(int, pfnUnmount,(PPDMIMOUNT pInterface, bool fForce, bool fEject)); /** * Checks if a media is mounted. * * @returns true if mounted. * @returns false if not mounted. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(bool, pfnIsMounted,(PPDMIMOUNT pInterface)); /** * Locks the media, preventing any unmounting of it. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(int, pfnLock,(PPDMIMOUNT pInterface)); /** * Unlocks the media, canceling previous calls to pfnLock(). * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(int, pfnUnlock,(PPDMIMOUNT pInterface)); /** * Checks if a media is locked. * * @returns true if locked. * @returns false if not locked. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(bool, pfnIsLocked,(PPDMIMOUNT pInterface)); } PDMIMOUNT; /** PDMIMOUNT interface ID. */ #define PDMIMOUNT_IID "34fc7a4c-623a-4806-a6bf-5be1be33c99f" /** * Callback which provides progress information. * * @return VBox status code. * @param pvUser Opaque user data. * @param uPercent Completion percentage. */ typedef DECLCALLBACK(int) FNSIMPLEPROGRESS(void *pvUser, unsigned uPercentage); /** Pointer to FNSIMPLEPROGRESS() */ typedef FNSIMPLEPROGRESS *PFNSIMPLEPROGRESS; /** * Media type. */ typedef enum PDMMEDIATYPE { /** Error (for the query function). */ PDMMEDIATYPE_ERROR = 1, /** 360KB 5 1/4" floppy drive. */ PDMMEDIATYPE_FLOPPY_360, /** 720KB 3 1/2" floppy drive. */ PDMMEDIATYPE_FLOPPY_720, /** 1.2MB 5 1/4" floppy drive. */ PDMMEDIATYPE_FLOPPY_1_20, /** 1.44MB 3 1/2" floppy drive. */ PDMMEDIATYPE_FLOPPY_1_44, /** 2.88MB 3 1/2" floppy drive. */ PDMMEDIATYPE_FLOPPY_2_88, /** Fake drive that can take up to 15.6 MB images. * C=255, H=2, S=63. */ PDMMEDIATYPE_FLOPPY_FAKE_15_6, /** Fake drive that can take up to 63.5 MB images. * C=255, H=2, S=255. */ PDMMEDIATYPE_FLOPPY_FAKE_63_5, /** CDROM drive. */ PDMMEDIATYPE_CDROM, /** DVD drive. */ PDMMEDIATYPE_DVD, /** Hard disk drive. */ PDMMEDIATYPE_HARD_DISK } PDMMEDIATYPE; /** Check if the given block type is a floppy. */ #define PDMMEDIATYPE_IS_FLOPPY(a_enmType) ( (a_enmType) >= PDMMEDIATYPE_FLOPPY_360 && (a_enmType) <= PDMMEDIATYPE_FLOPPY_2_88 ) /** * Raw command data transfer direction. */ typedef enum PDMMEDIATXDIR { PDMMEDIATXDIR_NONE = 0, PDMMEDIATXDIR_FROM_DEVICE, PDMMEDIATXDIR_TO_DEVICE } PDMMEDIATXDIR; /** * Media geometry structure. */ typedef struct PDMMEDIAGEOMETRY { /** Number of cylinders. */ uint32_t cCylinders; /** Number of heads. */ uint32_t cHeads; /** Number of sectors. */ uint32_t cSectors; } PDMMEDIAGEOMETRY; /** Pointer to media geometry structure. */ typedef PDMMEDIAGEOMETRY *PPDMMEDIAGEOMETRY; /** Pointer to constant media geometry structure. */ typedef const PDMMEDIAGEOMETRY *PCPDMMEDIAGEOMETRY; /** Pointer to a media port interface. */ typedef struct PDMIMEDIAPORT *PPDMIMEDIAPORT; /** * Media port interface (down). */ typedef struct PDMIMEDIAPORT { /** * Returns the storage controller name, instance and LUN of the attached medium. * * @returns VBox status. * @param pInterface Pointer to this interface. * @param ppcszController Where to store the name of the storage controller. * @param piInstance Where to store the instance number of the controller. * @param piLUN Where to store the LUN of the attached device. */ DECLR3CALLBACKMEMBER(int, pfnQueryDeviceLocation, (PPDMIMEDIAPORT pInterface, const char **ppcszController, uint32_t *piInstance, uint32_t *piLUN)); } PDMIMEDIAPORT; /** PDMIMEDIAPORT interface ID. */ #define PDMIMEDIAPORT_IID "9f7e8c9e-6d35-4453-bbef-1f78033174d6" /** Pointer to a media interface. */ typedef struct PDMIMEDIA *PPDMIMEDIA; /** * Media interface (up). * Pairs with PDMIMEDIAPORT. */ typedef struct PDMIMEDIA { /** * Read bits. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param off Offset to start reading from. The offset must be aligned to a sector boundary. * @param pvBuf Where to store the read bits. * @param cbRead Number of bytes to read. Must be aligned to a sector boundary. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnRead,(PPDMIMEDIA pInterface, uint64_t off, void *pvBuf, size_t cbRead)); /** * Read bits - version for DevPcBios. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param off Offset to start reading from. The offset must be aligned to a sector boundary. * @param pvBuf Where to store the read bits. * @param cbRead Number of bytes to read. Must be aligned to a sector boundary. * @thread Any thread. * * @note: Special version of pfnRead which doesn't try to suspend the VM when the DEKs for encrypted disks * are missing but just returns an error. */ DECLR3CALLBACKMEMBER(int, pfnReadPcBios,(PPDMIMEDIA pInterface, uint64_t off, void *pvBuf, size_t cbRead)); /** * Write bits. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param off Offset to start writing at. The offset must be aligned to a sector boundary. * @param pvBuf Where to store the write bits. * @param cbWrite Number of bytes to write. Must be aligned to a sector boundary. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnWrite,(PPDMIMEDIA pInterface, uint64_t off, const void *pvBuf, size_t cbWrite)); /** * Make sure that the bits written are actually on the storage medium. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnFlush,(PPDMIMEDIA pInterface)); /** * Send a raw command to the underlying device (CDROM). * This method is optional (i.e. the function pointer may be NULL). * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pbCdb The command to process. * @param cbCdb The length of the command in bytes. * @param enmTxDir Direction of transfer. * @param pvBuf Pointer tp the transfer buffer. * @param pcbBuf Size of the transfer buffer. * @param pabSense Status of the command (when return value is VERR_DEV_IO_ERROR). * @param cbSense Size of the sense buffer in bytes. * @param cTimeoutMillies Command timeout in milliseconds. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnSendCmd,(PPDMIMEDIA pInterface, const uint8_t *pbCdb, size_t cbCdb, PDMMEDIATXDIR enmTxDir, void *pvBuf, uint32_t *pcbBuf, uint8_t *pabSense, size_t cbSense, uint32_t cTimeoutMillies)); /** * Merge medium contents during a live snapshot deletion. All details * must have been configured through CFGM or this will fail. * This method is optional (i.e. the function pointer may be NULL). * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pfnProgress Function pointer for progress notification. * @param pvUser Opaque user data for progress notification. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnMerge,(PPDMIMEDIA pInterface, PFNSIMPLEPROGRESS pfnProgress, void *pvUser)); /** * Sets the secret key retrieval interface to use to get secret keys. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pIfSecKey The secret key interface to use. * Use NULL to clear the currently set interface and clear all secret * keys from the user. * @param pIfSecKeyHlp The secret key helper interface to use. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnSetSecKeyIf,(PPDMIMEDIA pInterface, struct PDMISECKEY *pIfSecKey, struct PDMISECKEYHLP *pIfSecKeyHlp)); /** * Get the media size in bytes. * * @returns Media size in bytes. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint64_t, pfnGetSize,(PPDMIMEDIA pInterface)); /** * Gets the media sector size in bytes. * * @returns Media sector size in bytes. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint32_t, pfnGetSectorSize,(PPDMIMEDIA pInterface)); /** * Check if the media is readonly or not. * * @returns true if readonly. * @returns false if read/write. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(bool, pfnIsReadOnly,(PPDMIMEDIA pInterface)); /** * Returns whether the medium should be marked as rotational or not. * * @returns true if non rotating medium. * @returns false if rotating medium. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(bool, pfnIsNonRotational,(PPDMIMEDIA pInterface)); /** * Get stored media geometry (physical CHS, PCHS) - BIOS property. * This is an optional feature of a media. * * @returns VBox status code. * @returns VERR_NOT_IMPLEMENTED if the media doesn't support storing the geometry. * @returns VERR_PDM_GEOMETRY_NOT_SET if the geometry hasn't been set using pfnBiosSetPCHSGeometry() yet. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pPCHSGeometry Pointer to PCHS geometry (cylinders/heads/sectors). * @remark This has no influence on the read/write operations. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnBiosGetPCHSGeometry,(PPDMIMEDIA pInterface, PPDMMEDIAGEOMETRY pPCHSGeometry)); /** * Store the media geometry (physical CHS, PCHS) - BIOS property. * This is an optional feature of a media. * * @returns VBox status code. * @returns VERR_NOT_IMPLEMENTED if the media doesn't support storing the geometry. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pPCHSGeometry Pointer to PCHS geometry (cylinders/heads/sectors). * @remark This has no influence on the read/write operations. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(int, pfnBiosSetPCHSGeometry,(PPDMIMEDIA pInterface, PCPDMMEDIAGEOMETRY pPCHSGeometry)); /** * Get stored media geometry (logical CHS, LCHS) - BIOS property. * This is an optional feature of a media. * * @returns VBox status code. * @returns VERR_NOT_IMPLEMENTED if the media doesn't support storing the geometry. * @returns VERR_PDM_GEOMETRY_NOT_SET if the geometry hasn't been set using pfnBiosSetLCHSGeometry() yet. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pLCHSGeometry Pointer to LCHS geometry (cylinders/heads/sectors). * @remark This has no influence on the read/write operations. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnBiosGetLCHSGeometry,(PPDMIMEDIA pInterface, PPDMMEDIAGEOMETRY pLCHSGeometry)); /** * Store the media geometry (logical CHS, LCHS) - BIOS property. * This is an optional feature of a media. * * @returns VBox status code. * @returns VERR_NOT_IMPLEMENTED if the media doesn't support storing the geometry. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pLCHSGeometry Pointer to LCHS geometry (cylinders/heads/sectors). * @remark This has no influence on the read/write operations. * @thread The emulation thread. */ DECLR3CALLBACKMEMBER(int, pfnBiosSetLCHSGeometry,(PPDMIMEDIA pInterface, PCPDMMEDIAGEOMETRY pLCHSGeometry)); /** * Checks if the device should be visible to the BIOS or not. * * @returns true if the device is visible to the BIOS. * @returns false if the device is not visible to the BIOS. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(bool, pfnBiosIsVisible,(PPDMIMEDIA pInterface)); /** * Gets the media type. * * @returns media type. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(PDMMEDIATYPE, pfnGetType,(PPDMIMEDIA pInterface)); /** * Gets the UUID of the media drive. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pUuid Where to store the UUID on success. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnGetUuid,(PPDMIMEDIA pInterface, PRTUUID pUuid)); /** * Discards the given range. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param paRanges Array of ranges to discard. * @param cRanges Number of entries in the array. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnDiscard,(PPDMIMEDIA pInterface, PCRTRANGE paRanges, unsigned cRanges)); /** * Returns the number of regions for the medium. * * @returns Number of regions. * @param pInterface Pointer to the interface structure containing the called function pointer. */ DECLR3CALLBACKMEMBER(uint32_t, pfnGetRegionCount,(PPDMIMEDIA pInterface)); /** * Queries the properties for the given region. * * @returns VBox status code. * @retval VERR_NOT_FOUND if the region index is not known. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param uRegion The region index to query the properties of. * @param pu64LbaStart Where to store the starting LBA for the region on success. * @param pcBlocks Where to store the number of blocks for the region on success. * @param pcbBlock Where to store the size of one block in bytes on success. * @param penmDataForm WHere to store the data form for the region on success. */ DECLR3CALLBACKMEMBER(int, pfnQueryRegionProperties,(PPDMIMEDIA pInterface, uint32_t uRegion, uint64_t *pu64LbaStart, uint64_t *pcBlocks, uint64_t *pcbBlock, PVDREGIONDATAFORM penmDataForm)); /** * Queries the properties for the region covering the given LBA. * * @returns VBox status code. * @retval VERR_NOT_FOUND if the region index is not known. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param u64LbaStart Where to store the starting LBA for the region on success. * @param puRegion Where to store the region number on success. * @param pcBlocks Where to store the number of blocks left in this region starting from the given LBA. * @param pcbBlock Where to store the size of one block in bytes on success. * @param penmDataForm WHere to store the data form for the region on success. */ DECLR3CALLBACKMEMBER(int, pfnQueryRegionPropertiesForLba,(PPDMIMEDIA pInterface, uint64_t u64LbaStart, uint32_t *puRegion, uint64_t *pcBlocks, uint64_t *pcbBlock, PVDREGIONDATAFORM penmDataForm)); } PDMIMEDIA; /** PDMIMEDIA interface ID. */ #define PDMIMEDIA_IID "8ec68c48-dd20-4430-8386-f0d628a5aca6" /** * Opaque I/O request handle. * * The specific content depends on the driver implementing this interface. */ typedef struct PDMMEDIAEXIOREQINT *PDMMEDIAEXIOREQ; /** Pointer to an I/O request handle. */ typedef PDMMEDIAEXIOREQ *PPDMMEDIAEXIOREQ; /** A I/O request ID. */ typedef uint64_t PDMMEDIAEXIOREQID; /** * I/O Request Type. */ typedef enum PDMMEDIAEXIOREQTYPE { /** Invalid tpe. */ PDMMEDIAEXIOREQTYPE_INVALID = 0, /** Flush request. */ PDMMEDIAEXIOREQTYPE_FLUSH, /** Write request. */ PDMMEDIAEXIOREQTYPE_WRITE, /** Read request. */ PDMMEDIAEXIOREQTYPE_READ, /** Discard request. */ PDMMEDIAEXIOREQTYPE_DISCARD, /** SCSI command. */ PDMMEDIAEXIOREQTYPE_SCSI } PDMMEDIAEXIOREQTYPE; /** Pointer to a I/O request type. */ typedef PDMMEDIAEXIOREQTYPE *PPDMMEDIAEXIOREQTYPE; /** * Data direction for raw SCSI commands. */ typedef enum PDMMEDIAEXIOREQSCSITXDIR { /** Invalid data direction. */ PDMMEDIAEXIOREQSCSITXDIR_INVALID = 0, /** Direction is unknown. */ PDMMEDIAEXIOREQSCSITXDIR_UNKNOWN, /** Direction is from device to host. */ PDMMEDIAEXIOREQSCSITXDIR_FROM_DEVICE, /** Direction is from host to device. */ PDMMEDIAEXIOREQSCSITXDIR_TO_DEVICE, /** No data transfer associated with this request. */ PDMMEDIAEXIOREQSCSITXDIR_NONE, /** 32bit hack. */ PDMMEDIAEXIOREQSCSITXDIR_32BIT_HACK = 0x7fffffff } PDMMEDIAEXIOREQSCSITXDIR; /** * I/O request state. */ typedef enum PDMMEDIAEXIOREQSTATE { /** Invalid state. */ PDMMEDIAEXIOREQSTATE_INVALID = 0, /** The request is active and being processed. */ PDMMEDIAEXIOREQSTATE_ACTIVE, /** The request is suspended due to an error and no processing will take place. */ PDMMEDIAEXIOREQSTATE_SUSPENDED, /** 32bit hack. */ PDMMEDIAEXIOREQSTATE_32BIT_HACK = 0x7fffffff } PDMMEDIAEXIOREQSTATE; /** Pointer to a I/O request state. */ typedef PDMMEDIAEXIOREQSTATE *PPDMMEDIAEXIOREQSTATE; /** @name Supported feature flags * @{ */ /** I/O requests will execute asynchronously by default. */ #define PDMIMEDIAEX_FEATURE_F_ASYNC RT_BIT_32(0) /** The discard request is supported. */ #define PDMIMEDIAEX_FEATURE_F_DISCARD RT_BIT_32(1) /** The send raw SCSI command request is supported. */ #define PDMIMEDIAEX_FEATURE_F_RAWSCSICMD RT_BIT_32(2) /** Mask of valid flags. */ #define PDMIMEDIAEX_FEATURE_F_VALID (PDMIMEDIAEX_FEATURE_F_ASYNC | PDMIMEDIAEX_FEATURE_F_DISCARD | PDMIMEDIAEX_FEATURE_F_RAWSCSICMD) /** @} */ /** @name I/O request specific flags * @{ */ /** Default behavior (async I/O).*/ #define PDMIMEDIAEX_F_DEFAULT (0) /** The I/O request will be executed synchronously. */ #define PDMIMEDIAEX_F_SYNC RT_BIT_32(0) /** Whether to suspend the VM on a recoverable error with * an appropriate error message (disk full, etc.). * The request will be retried by the driver implementing the interface * when the VM resumes the next time. However before suspending the request * the owner of the request will be notified using the PDMMEDIAEXPORT::pfnIoReqStateChanged. * The same goes for resuming the request after the VM was resumed. */ #define PDMIMEDIAEX_F_SUSPEND_ON_RECOVERABLE_ERR RT_BIT_32(1) /** Mask of valid flags. */ #define PDMIMEDIAEX_F_VALID (PDMIMEDIAEX_F_SYNC | PDMIMEDIAEX_F_SUSPEND_ON_RECOVERABLE_ERR) /** @} */ /** Pointer to an extended media notification interface. */ typedef struct PDMIMEDIAEXPORT *PPDMIMEDIAEXPORT; /** * Asynchronous version of the media interface (up). * Pair with PDMIMEDIAEXPORT. */ typedef struct PDMIMEDIAEXPORT { /** * Notify completion of a I/O request. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param rcReq IPRT Status code of the completed request. * VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqCompleteNotify, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, int rcReq)); /** * Copy data from the memory buffer of the caller to the callees memory buffer for the given request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOBUF_OVERFLOW if there is not enough room to store the data. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param offDst The destination offset from the start to write the data to. * @param pSgBuf The S/G buffer to read the data from. * @param cbCopy How many bytes to copy. */ DECLR3CALLBACKMEMBER(int, pfnIoReqCopyFromBuf, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, uint32_t offDst, PRTSGBUF pSgBuf, size_t cbCopy)); /** * Copy data to the memory buffer of the caller from the callees memory buffer for the given request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOBUF_UNDERRUN if there is not enough data to copy from the buffer. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param offSrc The offset from the start of the buffer to read the data from. * @param pSgBuf The S/G buffer to write the data to. * @param cbCopy How many bytes to copy. */ DECLR3CALLBACKMEMBER(int, pfnIoReqCopyToBuf, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, uint32_t offSrc, PRTSGBUF pSgBuf, size_t cbCopy)); /** * Queries a pointer to the memory buffer for the request from the drive/device above. * * @returns VBox status code. * @retval VERR_NOT_SUPPORTED if this is not supported for this request. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param ppvBuf Where to store the pointer to the guest buffer on success. * @param pcbBuf Where to store the size of the buffer on success. * * @note This is an optional feature of the entity implementing this interface to avoid overhead * by copying the data between buffers. If NULL it is not supported at all and the caller * has to resort to PDMIMEDIAEXPORT::pfnIoReqCopyToBuf and PDMIMEDIAEXPORT::pfnIoReqCopyFromBuf. * The same holds when VERR_NOT_SUPPORTED is returned. * * On the upside the caller of this interface might not call this method at all and just * use the before mentioned methods to copy the data between the buffers. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQueryBuf, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, void **ppvBuf, size_t *pcbBuf)); /** * Queries the specified amount of ranges to discard from the callee for the given I/O request. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param idxRangeStart The range index to start with. * @param cRanges How man ranges can be stored in the provided array. * @param paRanges Where to store the ranges on success. * @param *pcRanges Where to store the number of ranges copied over on success. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQueryDiscardRanges, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, uint32_t idxRangeStart, uint32_t cRanges, PRTRANGE paRanges, uint32_t *pcRanges)); /** * Notify the request owner about a state change for the request. * * @returns nothing. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request handle. * @param pvIoReqAlloc The allocator specific memory for this request. * @param enmState The new state of the request. */ DECLR3CALLBACKMEMBER(void, pfnIoReqStateChanged, (PPDMIMEDIAEXPORT pInterface, PDMMEDIAEXIOREQ hIoReq, void *pvIoReqAlloc, PDMMEDIAEXIOREQSTATE enmState)); /** * Informs the device that the underlying medium was ejected. * * @returns nothing. * @param pInterface Pointer to the interface structure containing the called function pointer. */ DECLR3CALLBACKMEMBER(void, pfnMediumEjected, (PPDMIMEDIAEXPORT pInterface)); } PDMIMEDIAEXPORT; /** PDMIMEDIAAEXPORT interface ID. */ #define PDMIMEDIAEXPORT_IID "0ae2e534-6c28-41d6-9a88-7f88f2cb2ff8" /** Pointer to an extended media interface. */ typedef struct PDMIMEDIAEX *PPDMIMEDIAEX; /** * Extended version of PDMIMEDIA (down). * Pair with PDMIMEDIAEXPORT. */ typedef struct PDMIMEDIAEX { /** * Queries the features supported by the entity implementing this interface. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pfFeatures Where to store the supported feature flags on success. */ DECLR3CALLBACKMEMBER(int, pfnQueryFeatures, (PPDMIMEDIAEX pInterface, uint32_t *pfFeatures)); /** * Sets the size of the allocator specific memory for a I/O request. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param cbIoReqAlloc The size of the allocator specific memory in bytes. * @thread EMT. */ DECLR3CALLBACKMEMBER(int, pfnIoReqAllocSizeSet, (PPDMIMEDIAEX pInterface, size_t cbIoReqAlloc)); /** * Allocates a new I/O request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQID_CONFLICT if the ID belongs to a still active request. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param phIoReq Where to store the handle to the new I/O request on success. * @param ppvIoReqAlloc Where to store the pointer to the allocator specific memory on success. * NULL if the memory size was not set or set to 0. * @param uIoReqId A custom request ID which can be used to cancel the request. * @param fFlags A combination of PDMIMEDIAEX_F_* flags. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqAlloc, (PPDMIMEDIAEX pInterface, PPDMMEDIAEXIOREQ phIoReq, void **ppvIoReqAlloc, PDMMEDIAEXIOREQID uIoReqId, uint32_t fFlags)); /** * Frees a given I/O request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_INVALID_STATE if the given request is still active. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to free. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqFree, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq)); /** * Queries the residual amount of data not transfered when the request completed. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_INVALID_STATE has not completed yet. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request. * @param pcbResidual Where to store the amount of resdiual data in bytes. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQueryResidual, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, size_t *pcbResidual)); /** * Queries the residual amount of data not transfered when the request completed. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_INVALID_STATE has not completed yet. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request. * @param pcbXfer Where to store the amount of resdiual data in bytes. * @thread Any thread. * * @note For simple read/write requests this returns the amount to read/write as given to the * PDMIMEDIAEX::pfnIoReqRead or PDMIMEDIAEX::pfnIoReqWrite call. * For SCSI commands this returns the transfer size as given in the provided CDB. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQueryXferSize, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, size_t *pcbXfer)); /** * Cancels all I/O active requests. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqCancelAll, (PPDMIMEDIAEX pInterface)); /** * Cancels a I/O request identified by the ID. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQID_NOT_FOUND if the given ID could not be found in the active request list. * (The request has either completed already or an invalid ID was given). * @param pInterface Pointer to the interface structure containing the called function pointer. * @param uIoReqId The I/O request ID * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqCancel, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQID uIoReqId)); /** * Start a reading request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @retval VINF_PDM_MEDIAEX_IOREQ_IN_PROGRESS if the request was successfully submitted but is still in progress. * Completion will be notified through PDMIMEDIAEXPORT::pfnIoReqCompleteNotify with the appropriate status code. * @retval VINF_SUCCESS if the request completed successfully. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to associate the read with. * @param off Offset to start reading from. Must be aligned to a sector boundary. * @param cbRead Number of bytes to read. Must be aligned to a sector boundary. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqRead, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, uint64_t off, size_t cbRead)); /** * Start a writing request. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @retval VINF_PDM_MEDIAEX_IOREQ_IN_PROGRESS if the request was successfully submitted but is still in progress. * Completion will be notified through PDMIMEDIAEXPORT::pfnIoReqCompleteNotify with the appropriate status code. * @retval VINF_SUCCESS if the request completed successfully. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to associate the write with. * @param off Offset to start reading from. Must be aligned to a sector boundary. * @param cbWrite Number of bytes to write. Must be aligned to a sector boundary. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqWrite, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, uint64_t off, size_t cbWrite)); /** * Flush everything to disk. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @retval VINF_PDM_MEDIAEX_IOREQ_IN_PROGRESS if the request was successfully submitted but is still in progress. * Completion will be notified through PDMIMEDIAEXPORT::pfnIoReqCompleteNotify with the appropriate status code. * @retval VINF_SUCCESS if the request completed successfully. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to associate the flush with. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqFlush, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq)); /** * Discards the given range. * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @retval VINF_PDM_MEDIAEX_IOREQ_IN_PROGRESS if the request was successfully submitted but is still in progress. * Completion will be notified through PDMIMEDIAEXPORT::pfnIoReqCompleteNotify with the appropriate status code. * @retval VINF_SUCCESS if the request completed successfully. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to associate the discard with. * @param cRangesMax The maximum number of ranges this request has associated, this must not be accurate * but can actually be bigger than the amount of ranges actually available. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqDiscard, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, unsigned cRangesMax)); /** * Send a raw command to the underlying device (CDROM). * * @returns VBox status code. * @retval VERR_PDM_MEDIAEX_IOREQ_CANCELED if the request was canceled by a call to * PDMIMEDIAEX::pfnIoReqCancel. * @retval VINF_PDM_MEDIAEX_IOREQ_IN_PROGRESS if the request was successfully submitted but is still in progress. * Completion will be notified through PDMIMEDIAEXPORT::pfnIoReqCompleteNotify with the appropriate status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The I/O request to associate the command with. * @param uLun The LUN the command is for. * @param pbCdb The SCSI CDB containing the command. * @param cbCdb Size of the CDB in bytes. * @param enmTxDir Direction of transfer. * @param cbBuf Size of the transfer buffer. * @param pabSense Where to store the optional sense key. * @param cbSense Size of the sense key buffer. * @param pu8ScsiSts Where to store the SCSI status on success. * @param cTimeoutMillies Command timeout in milliseconds. * @thread Any thread. */ DECLR3CALLBACKMEMBER(int, pfnIoReqSendScsiCmd,(PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, uint32_t uLun, const uint8_t *pbCdb, size_t cbCdb, PDMMEDIAEXIOREQSCSITXDIR enmTxDir, size_t cbBuf, uint8_t *pabSense, size_t cbSense, uint8_t *pu8ScsiSts, uint32_t cTimeoutMillies)); /** * Returns the number of active I/O requests. * * @returns Number of active I/O requests. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint32_t, pfnIoReqGetActiveCount, (PPDMIMEDIAEX pInterface)); /** * Returns the number of suspended requests. * * @returns Number of suspended I/O requests. * @param pInterface Pointer to the interface structure containing the called function pointer. * @thread Any thread. */ DECLR3CALLBACKMEMBER(uint32_t, pfnIoReqGetSuspendedCount, (PPDMIMEDIAEX pInterface)); /** * Gets the first suspended request handle. * * @returns VBox status code. * @retval VERR_NOT_FOUND if there is no suspended request waiting. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param phIoReq Where to store the request handle on success. * @param ppvIoReqAlloc Where to store the pointer to the allocator specific memory on success. * @thread Any thread. * * @note This should only be called when the VM is suspended to make sure the request doesn't suddenly * changes into the active state again. The only purpose for this method for now is to make saving the state * possible without breaking saved state versions. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQuerySuspendedStart, (PPDMIMEDIAEX pInterface, PPDMMEDIAEXIOREQ phIoReq, void **ppvIoReqAlloc)); /** * Gets the next suspended request handle. * * @returns VBox status code. * @retval VERR_NOT_FOUND if there is no suspended request waiting. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param hIoReq The current request handle. * @param phIoReqNext Where to store the request handle on success. * @param ppvIoReqAllocNext Where to store the pointer to the allocator specific memory on success. * @thread Any thread. * * @note This should only be called when the VM is suspended to make sure the request doesn't suddenly * changes into the active state again. The only purpose for this method for now is to make saving the state * possible without breaking saved state versions. */ DECLR3CALLBACKMEMBER(int, pfnIoReqQuerySuspendedNext, (PPDMIMEDIAEX pInterface, PDMMEDIAEXIOREQ hIoReq, PPDMMEDIAEXIOREQ phIoReqNext, void **ppvIoReqAllocNext)); /** * Saves the given I/O request state in the provided saved state unit. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pSSM The SSM handle. * @param hIoReq The request handle to save. */ DECLR3CALLBACKMEMBER(int, pfnIoReqSuspendedSave, (PPDMIMEDIAEX pInterface, PSSMHANDLE pSSM, PDMMEDIAEXIOREQ hIoReq)); /** * Load a suspended request state from the given saved state unit and link it into the suspended list. * * @returns VBox status code. * @param pInterface Pointer to the interface structure containing the called function pointer. * @param pSSM The SSM handle to read the state from. * @param hIoReq The request handle to load the state into. */ DECLR3CALLBACKMEMBER(int, pfnIoReqSuspendedLoad, (PPDMIMEDIAEX pInterface, PSSMHANDLE pSSM, PDMMEDIAEXIOREQ hIoReq)); } PDMIMEDIAEX; /** PDMIMEDIAEX interface ID. */ #define PDMIMEDIAEX_IID "1f82b709-a9f7-4928-ad50-e879c9bbeba1" /** @} */ RT_C_DECLS_END #endif