/** @file * IOM - Input / Output Monitor. */ /* * Copyright (C) 2006-2016 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_iom_h #define ___VBox_vmm_iom_h #include #include #include RT_C_DECLS_BEGIN /** @defgroup grp_iom The Input / Ouput Monitor API * @ingroup grp_vmm * @{ */ /** @def IOM_NO_PDMINS_CHECKS * Until all devices have been fully adjusted to PDM style, the pPdmIns * parameter is not checked by IOM. * @todo Check this again, now. */ #define IOM_NO_PDMINS_CHECKS /** * Macro for checking if an I/O or MMIO emulation call succeeded. * * This macro shall only be used with the IOM APIs where it's mentioned * in the return value description. And there it must be used to correctly * determine if the call succeeded and things like the RIP needs updating. * * * @returns Success indicator (true/false). * * @param rc The status code. This may be evaluated * more than once! * * @remarks To avoid making assumptions about the layout of the * VINF_EM_FIRST...VINF_EM_LAST range we're checking explicitly for * each exact exception. However, for efficiency we ASSUME that the * VINF_EM_LAST is smaller than most of the relevant status codes. We * also ASSUME that the VINF_EM_RESCHEDULE_REM status code is the * most frequent status code we'll enounter in this range. * * @todo Will have to add VINF_EM_DBG_HYPER_BREAKPOINT if the * I/O port and MMIO breakpoints should trigger before * the I/O is done. Currently, we don't implement these * kind of breakpoints. */ #ifdef IN_RING3 # define IOM_SUCCESS(rc) ( (rc) == VINF_SUCCESS \ || ( (rc) <= VINF_EM_LAST \ && (rc) != VINF_EM_RESCHEDULE_REM \ && (rc) >= VINF_EM_FIRST \ && (rc) != VINF_EM_RESCHEDULE_RAW \ && (rc) != VINF_EM_RESCHEDULE_HM \ ) \ ) #else # define IOM_SUCCESS(rc) ( (rc) == VINF_SUCCESS \ || ( (rc) <= VINF_EM_LAST \ && (rc) != VINF_EM_RESCHEDULE_REM \ && (rc) >= VINF_EM_FIRST \ && (rc) != VINF_EM_RESCHEDULE_RAW \ && (rc) != VINF_EM_RESCHEDULE_HM \ ) \ || (rc) == VINF_IOM_R3_IOPORT_COMMIT_WRITE \ || (rc) == VINF_IOM_R3_MMIO_COMMIT_WRITE \ ) #endif /** @name IOMMMIO_FLAGS_XXX * @{ */ /** Pass all reads thru unmodified. */ #define IOMMMIO_FLAGS_READ_PASSTHRU UINT32_C(0x00000000) /** All read accesses are DWORD sized (32-bit). */ #define IOMMMIO_FLAGS_READ_DWORD UINT32_C(0x00000001) /** All read accesses are DWORD (32-bit) or QWORD (64-bit) sized. * Only accesses that are both QWORD sized and aligned are performed as QWORD. * All other access will be done DWORD fashion (because it is way simpler). */ #define IOMMMIO_FLAGS_READ_DWORD_QWORD UINT32_C(0x00000002) /** The read access mode mask. */ #define IOMMMIO_FLAGS_READ_MODE UINT32_C(0x00000003) /** Pass all writes thru unmodified. */ #define IOMMMIO_FLAGS_WRITE_PASSTHRU UINT32_C(0x00000000) /** All write accesses are DWORD (32-bit) sized and unspecified bytes are * written as zero. */ #define IOMMMIO_FLAGS_WRITE_DWORD_ZEROED UINT32_C(0x00000010) /** All write accesses are either DWORD (32-bit) or QWORD (64-bit) sized, * missing bytes will be written as zero. Only accesses that are both QWORD * sized and aligned are performed as QWORD, all other accesses will be done * DWORD fashion (because it's way simpler). */ #define IOMMMIO_FLAGS_WRITE_DWORD_QWORD_ZEROED UINT32_C(0x00000020) /** All write accesses are DWORD (32-bit) sized and unspecified bytes are * read from the device first as DWORDs. * @remarks This isn't how it happens on real hardware, but it allows * simplifications of devices where reads doesn't change the device * state in any way. */ #define IOMMMIO_FLAGS_WRITE_DWORD_READ_MISSING UINT32_C(0x00000030) /** All write accesses are DWORD (32-bit) or QWORD (64-bit) sized and * unspecified bytes are read from the device first as DWORDs. Only accesses * that are both QWORD sized and aligned are performed as QWORD, all other * accesses will be done DWORD fashion (because it's way simpler). * @remarks This isn't how it happens on real hardware, but it allows * simplifications of devices where reads doesn't change the device * state in any way. */ #define IOMMMIO_FLAGS_WRITE_DWORD_QWORD_READ_MISSING UINT32_C(0x00000040) /** All write accesses are DWORD (32-bit) sized and aligned, attempts at other * accesses are ignored. * @remarks E1000, APIC */ #define IOMMMIO_FLAGS_WRITE_ONLY_DWORD UINT32_C(0x00000050) /** All write accesses are DWORD (32-bit) or QWORD (64-bit) sized and aligned, * attempts at other accesses are ignored. * @remarks Seemingly required by AHCI (although I doubt it's _really_ * required as EM/REM doesn't do the right thing in ring-3 anyway, * esp. not in raw-mode). */ #define IOMMMIO_FLAGS_WRITE_ONLY_DWORD_QWORD UINT32_C(0x00000060) /** The read access mode mask. */ #define IOMMMIO_FLAGS_WRITE_MODE UINT32_C(0x00000070) /** Whether to do a DBGSTOP on complicated reads. * What this includes depends on the read mode, but generally all misaligned * reads as well as word and byte reads and maybe qword reads. */ #define IOMMMIO_FLAGS_DBGSTOP_ON_COMPLICATED_READ UINT32_C(0x00000100) /** Whether to do a DBGSTOP on complicated writes. * This depends on the write mode, but generally all writes where we have to * supply bytes (zero them or read them). */ #define IOMMMIO_FLAGS_DBGSTOP_ON_COMPLICATED_WRITE UINT32_C(0x00000200) /** Mask of valid flags. */ #define IOMMMIO_FLAGS_VALID_MASK UINT32_C(0x00000373) /** @} */ /** * Checks whether the write mode allows aligned QWORD accesses to be passed * thru to the device handler. * @param a_fFlags The MMIO handler flags. * @remarks The current implementation makes ASSUMPTIONS about the mode values! */ #define IOMMMIO_DOES_WRITE_MODE_ALLOW_QWORD(a_fFlags) RT_BOOL((a_fFlags) & UINT32_C(0x00000020)) /** * Port I/O Handler for IN operations. * * @returns VINF_SUCCESS or VINF_EM_*. * @returns VERR_IOM_IOPORT_UNUSED if the port is really unused and a ~0 value should be returned. * * @param pDevIns The device instance. * @param pvUser User argument. * @param uPort Port number used for the IN operation. * @param pu32 Where to store the result. This is always a 32-bit * variable regardless of what @a cb might say. * @param cb Number of bytes read. * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMIOPORTIN(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t *pu32, unsigned cb); /** Pointer to a FNIOMIOPORTIN(). */ typedef FNIOMIOPORTIN *PFNIOMIOPORTIN; /** * Port I/O Handler for string IN operations. * * @returns VINF_SUCCESS or VINF_EM_*. * @returns VERR_IOM_IOPORT_UNUSED if the port is really unused and a ~0 value should be returned. * * @param pDevIns The device instance. * @param pvUser User argument. * @param uPort Port number used for the IN operation. * @param pbDst Pointer to the destination buffer. * @param pcTransfers Pointer to the number of transfer units to read, on * return remaining transfer units. * @param cb Size of the transfer unit (1, 2 or 4 bytes). * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMIOPORTINSTRING(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint8_t *pbDst, uint32_t *pcTransfers, unsigned cb); /** Pointer to a FNIOMIOPORTINSTRING(). */ typedef FNIOMIOPORTINSTRING *PFNIOMIOPORTINSTRING; /** * Port I/O Handler for OUT operations. * * @returns VINF_SUCCESS or VINF_EM_*. * * @param pDevIns The device instance. * @param pvUser User argument. * @param uPort Port number used for the OUT operation. * @param u32 The value to output. * @param cb The value size in bytes. * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMIOPORTOUT(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb); /** Pointer to a FNIOMIOPORTOUT(). */ typedef FNIOMIOPORTOUT *PFNIOMIOPORTOUT; /** * Port I/O Handler for string OUT operations. * * @returns VINF_SUCCESS or VINF_EM_*. * * @param pDevIns The device instance. * @param pvUser User argument. * @param uPort Port number used for the OUT operation. * @param pbSrc Pointer to the source buffer. * @param pcTransfers Pointer to the number of transfer units to write, on * return remaining transfer units. * @param cb Size of the transfer unit (1, 2 or 4 bytes). * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMIOPORTOUTSTRING(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, const uint8_t *pbSrc, uint32_t *pcTransfers, unsigned cb); /** Pointer to a FNIOMIOPORTOUTSTRING(). */ typedef FNIOMIOPORTOUTSTRING *PFNIOMIOPORTOUTSTRING; /** * Memory mapped I/O Handler for read operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument. * @param GCPhysAddr Physical address (in GC) where the read starts. * @param pv Where to store the result. * @param cb Number of bytes read. * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMMMIOREAD(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS GCPhysAddr, void *pv, unsigned cb); /** Pointer to a FNIOMMMIOREAD(). */ typedef FNIOMMMIOREAD *PFNIOMMMIOREAD; /** * Memory mapped I/O Handler for write operations. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument. * @param GCPhysAddr Physical address (in GC) where the read starts. * @param pv Where to fetch the result. * @param cb Number of bytes to write. * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMMMIOWRITE(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS GCPhysAddr, void const *pv, unsigned cb); /** Pointer to a FNIOMMMIOWRITE(). */ typedef FNIOMMMIOWRITE *PFNIOMMMIOWRITE; /** * Memory mapped I/O Handler for memset operations, actually for REP STOS* instructions handling. * * @returns VBox status code. * * @param pDevIns The device instance. * @param pvUser User argument. * @param GCPhysAddr Physical address (in GC) where the write starts. * @param u32Item Byte/Word/Dword data to fill. * @param cbItem Size of data in u32Item parameter, restricted to 1/2/4 bytes. * @param cItems Number of iterations. * @remarks Caller enters the device critical section. */ typedef DECLCALLBACK(int) FNIOMMMIOFILL(PPDMDEVINS pDevIns, void *pvUser, RTGCPHYS GCPhysAddr, uint32_t u32Item, unsigned cbItem, unsigned cItems); /** Pointer to a FNIOMMMIOFILL(). */ typedef FNIOMMMIOFILL *PFNIOMMMIOFILL; VMMDECL(VBOXSTRICTRC) IOMIOPortRead(PVM pVM, PVMCPU pVCpu, RTIOPORT Port, uint32_t *pu32Value, size_t cbValue); VMMDECL(VBOXSTRICTRC) IOMIOPortWrite(PVM pVM, PVMCPU pVCpu, RTIOPORT Port, uint32_t u32Value, size_t cbValue); VMM_INT_DECL(VBOXSTRICTRC) IOMIOPortReadString(PVM pVM, PVMCPU pVCpu, RTIOPORT Port, void *pvDst, uint32_t *pcTransfers, unsigned cb); VMM_INT_DECL(VBOXSTRICTRC) IOMIOPortWriteString(PVM pVM, PVMCPU pVCpu, RTIOPORT uPort, void const *pvSrc, uint32_t *pcTransfers, unsigned cb); VMMDECL(VBOXSTRICTRC) IOMInterpretINSEx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t uPort, uint32_t uPrefix, DISCPUMODE enmAddrMode, uint32_t cbTransfer); VMMDECL(VBOXSTRICTRC) IOMInterpretOUTSEx(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, uint32_t uPort, uint32_t uPrefix, DISCPUMODE enmAddrMode, uint32_t cbTransfer); VMMDECL(VBOXSTRICTRC) IOMMMIORead(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys, uint32_t *pu32Value, size_t cbValue); VMMDECL(VBOXSTRICTRC) IOMMMIOWrite(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys, uint32_t u32Value, size_t cbValue); VMMDECL(VBOXSTRICTRC) IOMMMIOPhysHandler(PVM pVM, PVMCPU pVCpu, RTGCUINT uErrorCode, PCPUMCTXCORE pCtxCore, RTGCPHYS GCPhysFault); VMMDECL(int) IOMMMIOMapMMIO2Page(PVM pVM, RTGCPHYS GCPhys, RTGCPHYS GCPhysRemapped, uint64_t fPageFlags); VMMDECL(int) IOMMMIOMapMMIOHCPage(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys, RTHCPHYS HCPhys, uint64_t fPageFlags); VMMDECL(int) IOMMMIOResetRegion(PVM pVM, RTGCPHYS GCPhys); VMMDECL(bool) IOMIsLockWriteOwner(PVM pVM); #ifdef IN_RC /** @defgroup grp_iom_rc The IOM Raw-Mode Context API * @{ */ VMMRCDECL(VBOXSTRICTRC) IOMRCIOPortHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu); /** @} */ #endif /* IN_RC */ #ifdef IN_RING3 /** @defgroup grp_iom_r3 The IOM Host Context Ring-3 API * @{ */ VMMR3_INT_DECL(int) IOMR3Init(PVM pVM); VMMR3_INT_DECL(void) IOMR3Reset(PVM pVM); VMMR3_INT_DECL(void) IOMR3Relocate(PVM pVM, RTGCINTPTR offDelta); VMMR3_INT_DECL(int) IOMR3Term(PVM pVM); VMMR3_INT_DECL(int) IOMR3IOPortRegisterR3(PVM pVM, PPDMDEVINS pDevIns, RTIOPORT PortStart, RTUINT cPorts, RTHCPTR pvUser, R3PTRTYPE(PFNIOMIOPORTOUT) pfnOutCallback, R3PTRTYPE(PFNIOMIOPORTIN) pfnInCallback, R3PTRTYPE(PFNIOMIOPORTOUTSTRING) pfnOutStringCallback, R3PTRTYPE(PFNIOMIOPORTINSTRING) pfnInStringCallback, const char *pszDesc); VMMR3_INT_DECL(int) IOMR3IOPortRegisterRC(PVM pVM, PPDMDEVINS pDevIns, RTIOPORT PortStart, RTUINT cPorts, RTRCPTR pvUser, RCPTRTYPE(PFNIOMIOPORTOUT) pfnOutCallback, RCPTRTYPE(PFNIOMIOPORTIN) pfnInCallback, RCPTRTYPE(PFNIOMIOPORTOUTSTRING) pfnOutStrCallback, RCPTRTYPE(PFNIOMIOPORTINSTRING) pfnInStrCallback, const char *pszDesc); VMMR3_INT_DECL(int) IOMR3IOPortRegisterR0(PVM pVM, PPDMDEVINS pDevIns, RTIOPORT PortStart, RTUINT cPorts, RTR0PTR pvUser, R0PTRTYPE(PFNIOMIOPORTOUT) pfnOutCallback, R0PTRTYPE(PFNIOMIOPORTIN) pfnInCallback, R0PTRTYPE(PFNIOMIOPORTOUTSTRING) pfnOutStrCallback, R0PTRTYPE(PFNIOMIOPORTINSTRING) pfnInStrCallback, const char *pszDesc); VMMR3_INT_DECL(int) IOMR3IOPortDeregister(PVM pVM, PPDMDEVINS pDevIns, RTIOPORT PortStart, RTUINT cPorts); VMMR3_INT_DECL(int) IOMR3MmioRegisterR3(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTGCPHYS cbRange, RTHCPTR pvUser, R3PTRTYPE(PFNIOMMMIOWRITE) pfnWriteCallback, R3PTRTYPE(PFNIOMMMIOREAD) pfnReadCallback, R3PTRTYPE(PFNIOMMMIOFILL) pfnFillCallback, uint32_t fFlags, const char *pszDesc); VMMR3_INT_DECL(int) IOMR3MmioRegisterR0(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTGCPHYS cbRange, RTR0PTR pvUser, R0PTRTYPE(PFNIOMMMIOWRITE) pfnWriteCallback, R0PTRTYPE(PFNIOMMMIOREAD) pfnReadCallback, R0PTRTYPE(PFNIOMMMIOFILL) pfnFillCallback); VMMR3_INT_DECL(int) IOMR3MmioRegisterRC(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTGCPHYS cbRange, RTGCPTR pvUser, RCPTRTYPE(PFNIOMMMIOWRITE) pfnWriteCallback, RCPTRTYPE(PFNIOMMMIOREAD) pfnReadCallback, RCPTRTYPE(PFNIOMMMIOFILL) pfnFillCallback); VMMR3_INT_DECL(int) IOMR3MmioDeregister(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTGCPHYS cbRange); VMMR3_INT_DECL(VBOXSTRICTRC) IOMR3ProcessForceFlag(PVM pVM, PVMCPU pVCpu, VBOXSTRICTRC rcStrict); VMMR3_INT_DECL(void) IOMR3NotifyBreakpointCountChange(PVM pVM, bool fPortIo, bool fMmio); VMMR3_INT_DECL(void) IOMR3NotifyDebugEventChange(PVM pVM, DBGFEVENT enmEvent, bool fEnabled); /** @} */ #endif /* IN_RING3 */ /** @} */ RT_C_DECLS_END #endif