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Diffstat (limited to 'include/VBox/vmm/pdmstorageifs.h')
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1 files changed, 1049 insertions, 0 deletions
diff --git a/include/VBox/vmm/pdmstorageifs.h b/include/VBox/vmm/pdmstorageifs.h new file mode 100644 index 00000000..d906c36a --- /dev/null +++ b/include/VBox/vmm/pdmstorageifs.h @@ -0,0 +1,1049 @@ +/** @file + * PDM - Pluggable Device Manager, Storage related interfaces. + */ + +/* + * Copyright (C) 2006-2020 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_INCLUDED_vmm_pdmstorageifs_h +#define VBOX_INCLUDED_vmm_pdmstorageifs_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/sg.h> +#include <VBox/types.h> +#include <VBox/vdmedia.h> + +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)); + + + /** + * Queries the vendor and product ID and revision to report for INQUIRY commands in underlying devices, optional. + * + * @returns VBox status code. + * @param pInterface Pointer to this interface. + * @param ppszVendorId Where to store the pointer to the vendor ID string to report. + * @param ppszProductId Where to store the pointer to the product ID string to report. + * @param ppszRevision Where to store the pointer to the revision string to report. + * + * @note The strings for the inquiry data are stored in the storage controller rather than in the device + * because if device attachments change (virtual CD/DVD drive versus host drive) there is currently no + * way to keep the INQUIRY data in extradata keys without causing trouble when the attachment is changed. + * Also Main currently doesn't has any settings for the attachment to store such information in the settings + * properly. Last reason (but not the most important one) is to stay compatible with older versions + * where the drive emulation was in AHCI but it now uses VSCSI and the settings overwrite should still work. + */ + DECLR3CALLBACKMEMBER(int, pfnQueryScsiInqStrings, (PPDMIMEDIAPORT pInterface, const char **ppszVendorId, + const char **ppszProductId, const char **ppszRevision)); + +} PDMIMEDIAPORT; +/** PDMIMEDIAPORT interface ID. */ +#define PDMIMEDIAPORT_IID "77180ab8-6485-454f-b440-efca322b7bd7" + +/** 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; +/** NIL I/O request handle. */ +#define NIL_PDMMEDIAEXIOREQ ((PDMMEDIAEXIOREQ)0) + +/** 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)); + + /** + * Notifies the driver below that the device received a suspend notification. + * + * @returns nothing. + * @param pInterface Pointer to the interface structure containing the called function pointer. + * + * @note this is required because the PDM drivers in the storage area usually get their suspend notification + * only after the device finished suspending. For some cases it is useful for the driver to know + * as early as possible that a suspend is in progress to stop issuing deferred requests or other things. + */ + DECLR3CALLBACKMEMBER(void, pfnNotifySuspend, (PPDMIMEDIAEX pInterface)); + + /** + * 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 penmTxDirRet Where to store the transfer direction as parsed from the CDB, optional. + * @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 pcbSenseRet Where to store the amount of sense data written, optional. + * @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, PDMMEDIAEXIOREQSCSITXDIR *penmTxDirRet, + size_t cbBuf, uint8_t *pabSense, size_t cbSense, size_t *pcbSenseRet, + 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 "29c9e82b-934e-45c5-bb84-0d871c3cc9dd" + +/** @} */ + +RT_C_DECLS_END + +#endif /* !VBOX_INCLUDED_vmm_pdmstorageifs_h */ |