/* $Id: IOMAll.cpp 5999 2007-12-07 15:05:06Z vboxsync $ */ /** @file * IOM - Input / Output Monitor - Any Context. */ /* * Copyright (C) 2006-2007 innotek GmbH * * 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. */ /******************************************************************************* * Header Files * *******************************************************************************/ #define LOG_GROUP LOG_GROUP_IOM #include #include #include #include "IOMInternal.h" #include #include #include #include #include #include #include #include /******************************************************************************* * Global Variables * *******************************************************************************/ /** * Array for fast recode of the operand size (1/2/4/8 bytes) to bit shift value. */ static const unsigned g_aSize2Shift[] = { ~0, /* 0 - invalid */ 0, /* *1 == 2^0 */ 1, /* *2 == 2^1 */ ~0, /* 3 - invalid */ 2, /* *4 == 2^2 */ ~0, /* 5 - invalid */ ~0, /* 6 - invalid */ ~0, /* 7 - invalid */ 3 /* *8 == 2^3 */ }; /** * Macro for fast recode of the operand size (1/2/4/8 bytes) to bit shift value. */ #define SIZE2SHIFT(cb) (g_aSize2Shift[cb]) /** * Calculates the size of register parameter. * * @returns 1, 2, 4 on success. * @returns 0 if non-register parameter. * @param pCpu Pointer to current disassembler context. * @param pParam Pointer to parameter of instruction to proccess. */ static unsigned iomGCGetRegSize(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam) { if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE16_SX8 | USE_IMMEDIATE32_SX8)) return 0; if (pParam->flags & USE_REG_GEN32) return 4; if (pParam->flags & USE_REG_GEN16) return 2; if (pParam->flags & USE_REG_GEN8) return 1; if (pParam->flags & USE_REG_SEG) return 2; return 0; } /** * Returns the contents of register or immediate data of instruction's parameter. * * @returns true on success. * * @param pCpu Pointer to current disassembler context. * @param pParam Pointer to parameter of instruction to proccess. * @param pRegFrame Pointer to CPUMCTXCORE guest structure. * @param pu32Data Where to store retrieved data. * @param pcbSize Where to store the size of data (1, 2, 4). */ static bool iomGCGetRegImmData(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, uint32_t *pu32Data, unsigned *pcbSize) { if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32)) { *pcbSize = 0; *pu32Data = 0; return false; } if (pParam->flags & USE_REG_GEN32) { *pcbSize = 4; DISFetchReg32(pRegFrame, pParam->base.reg_gen32, pu32Data); return true; } if (pParam->flags & USE_REG_GEN16) { *pcbSize = 2; DISFetchReg16(pRegFrame, pParam->base.reg_gen16, (uint16_t *)pu32Data); return true; } if (pParam->flags & USE_REG_GEN8) { *pcbSize = 1; DISFetchReg8(pRegFrame, pParam->base.reg_gen8, (uint8_t *)pu32Data); return true; } if (pParam->flags & (USE_IMMEDIATE32|USE_IMMEDIATE32_SX8)) { *pcbSize = 4; *pu32Data = (uint32_t)pParam->parval; return true; } if (pParam->flags & (USE_IMMEDIATE16|USE_IMMEDIATE16_SX8)) { *pcbSize = 2; *pu32Data = (uint16_t)pParam->parval; return true; } if (pParam->flags & USE_IMMEDIATE8) { *pcbSize = 1; *pu32Data = (uint8_t)pParam->parval; return true; } if (pParam->flags & USE_REG_SEG) { *pcbSize = 2; DISFetchRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL *)pu32Data); return true; } /* Else - error. */ *pcbSize = 0; *pu32Data = 0; return false; } /** * Saves data to 8/16/32 general purpose or segment register defined by * instruction's parameter. * * @returns true on success. * @param pCpu Pointer to current disassembler context. * @param pParam Pointer to parameter of instruction to proccess. * @param pRegFrame Pointer to CPUMCTXCORE guest structure. * @param u32Data 8/16/32 bit data to store. */ static bool iomGCSaveDataToReg(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, unsigned u32Data) { if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE32_SX8 | USE_IMMEDIATE16_SX8)) { return false; } if (pParam->flags & USE_REG_GEN32) { DISWriteReg32(pRegFrame, pParam->base.reg_gen32, u32Data); return true; } if (pParam->flags & USE_REG_GEN16) { DISWriteReg16(pRegFrame, pParam->base.reg_gen16, (uint16_t)u32Data); return true; } if (pParam->flags & USE_REG_GEN8) { DISWriteReg8(pRegFrame, pParam->base.reg_gen8, (uint8_t)u32Data); return true; } if (pParam->flags & USE_REG_SEG) { DISWriteRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL)u32Data); return true; } /* Else - error. */ return false; } /* * Internal - statistics only. */ inline void iomGCMMIOStatLength(PVM pVM, unsigned cb) { #ifdef VBOX_WITH_STATISTICS switch (cb) { case 1: STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO1Byte); break; case 2: STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO2Bytes); break; case 4: STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO4Bytes); break; default: /* No way. */ AssertMsgFailed(("Invalid data length %d\n", cb)); break; } #else NOREF(pVM); NOREF(cb); #endif } #ifndef IN_RING0 /** * Registers a Port IO GC handler. * * This API is called by PDM on behalf of a device. Devices must first register ring-3 ranges * using IOMIOPortRegisterR3() before calling this function. * * * @returns VBox status code. * * @param pVM VM handle. * @param pDevIns PDM device instance owning the port range. * @param PortStart First port number in the range. * @param cPorts Number of ports to register. * @param pvUser User argument for the callbacks. * @param pfnOutCallback Pointer to function which is gonna handle OUT operations in GC. * @param pfnInCallback Pointer to function which is gonna handle IN operations in GC. * @param pfnOutStrCallback Pointer to function which is gonna handle string OUT operations in GC. * @param pfnInStrCallback Pointer to function which is gonna handle string IN operations in GC. * @param pszDesc Pointer to description string. This must not be freed. */ IOMDECL(int) IOMIOPortRegisterGC(PVM pVM, PPDMDEVINS pDevIns, RTIOPORT PortStart, RTUINT cPorts, RTGCPTR pvUser, GCPTRTYPE(PFNIOMIOPORTOUT) pfnOutCallback, GCPTRTYPE(PFNIOMIOPORTIN) pfnInCallback, GCPTRTYPE(PFNIOMIOPORTOUTSTRING) pfnOutStrCallback, GCPTRTYPE(PFNIOMIOPORTINSTRING) pfnInStrCallback, const char *pszDesc) { LogFlow(("IOMIOPortRegisterGC: pDevIns=%p PortStart=%#x cPorts=%#x pvUser=%VGv pfnOutCallback=%VGv pfnInCallback=%VGv pfnOutStrCallback=%VGv pfnInStrCallback=%VGv pszDesc=%s\n", pDevIns, PortStart, cPorts, pvUser, pfnOutCallback, pfnInCallback, pfnOutStrCallback, pfnInStrCallback, pszDesc)); /* * Validate input. */ if ( (RTUINT)PortStart + cPorts <= (RTUINT)PortStart || (RTUINT)PortStart + cPorts > 0x10000) { AssertMsgFailed(("Invalid port range %#x-%#x! (%s)\n", PortStart, (RTUINT)PortStart + (cPorts - 1), pszDesc)); return VERR_IOM_INVALID_IOPORT_RANGE; } RTIOPORT PortLast = PortStart + (cPorts - 1); if (!pfnOutCallback && !pfnInCallback) { AssertMsgFailed(("Invalid port range %#x-%#x! No callbacks! (%s)\n", PortStart, PortLast, pszDesc)); return VERR_INVALID_PARAMETER; } /* * Validate that there are ring-3 ranges for the ports. */ RTIOPORT Port = PortStart; while (Port <= PortLast && Port >= PortStart) { PIOMIOPORTRANGER3 pRange = (PIOMIOPORTRANGER3)RTAvlroIOPortRangeGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortTreeR3, Port); if (!pRange) { AssertMsgFailed(("No R3! Port=#x %#x-%#x! (%s)\n", Port, PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); return VERR_IOM_NO_HC_IOPORT_RANGE; } #ifndef IOM_NO_PDMINS_CHECKS #ifndef IN_GC if (pRange->pDevIns != pDevIns) #else if (pRange->pDevIns != MMHyperGC2HC(pVM, pDevIns)) #endif { AssertMsgFailed(("Not owner! Port=%#x %#x-%#x! (%s)\n", Port, PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); return VERR_IOM_NOT_IOPORT_RANGE_OWNER; } #endif Port = pRange->Core.KeyLast + 1; } /* Flush the IO port lookup cache */ IOMFlushCache(pVM); /* * Allocate new range record and initialize it. */ PIOMIOPORTRANGEGC pRange; int rc = MMHyperAlloc(pVM, sizeof(*pRange), 0, MM_TAG_IOM, (void **)&pRange); if (VBOX_SUCCESS(rc)) { pRange->Core.Key = PortStart; pRange->Core.KeyLast = PortLast; pRange->Port = PortStart; pRange->cPorts = cPorts; pRange->pvUser = pvUser; pRange->pfnOutCallback = pfnOutCallback; pRange->pfnInCallback = pfnInCallback; pRange->pfnOutStrCallback = pfnOutStrCallback; pRange->pfnInStrCallback = pfnInStrCallback; #ifdef IN_GC pRange->pDevIns = pDevIns; pRange->pszDesc = MMHyperGC2HC(pVM, (void *)pszDesc); #else pRange->pDevIns = MMHyperHC2GC(pVM, pDevIns); pRange->pszDesc = pszDesc; #endif /* * Insert it. */ if (RTAvlroIOPortInsert(&pVM->iom.s.CTXSUFF(pTrees)->IOPortTreeGC, &pRange->Core)) return VINF_SUCCESS; /* conflict. */ AssertMsgFailed(("Port range %#x-%#x (%s) conflicts with existing range(s)!\n", PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); MMHyperFree(pVM, pRange); rc = VERR_IOM_IOPORT_RANGE_CONFLICT; } return rc; } /** * Registers a Memory Mapped I/O GC handler range. * * This API is called by PDM on behalf of a device. Devices must first register ring-3 ranges * using IOMMMIORegisterR3() before calling this function. * * * @returns VBox status code. * * @param pVM VM handle. * @param pDevIns PDM device instance owning the MMIO range. * @param GCPhysStart First physical address in the range. * @param cbRange The size of the range (in bytes). * @param pvUser User argument for the callbacks. * @param pfnWriteCallback Pointer to function which is gonna handle Write operations. * @param pfnReadCallback Pointer to function which is gonna handle Read operations. * @param pfnFillCallback Pointer to function which is gonna handle Fill/memset operations. * @param pszDesc Pointer to description string. This must not be freed. */ IOMDECL(int) IOMMMIORegisterGC(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTUINT cbRange, RTGCPTR pvUser, GCPTRTYPE(PFNIOMMMIOWRITE) pfnWriteCallback, GCPTRTYPE(PFNIOMMMIOREAD) pfnReadCallback, GCPTRTYPE(PFNIOMMMIOFILL) pfnFillCallback, const char *pszDesc) { LogFlow(("IOMMMIORegisterGC: pDevIns=%p GCPhysStart=%#x cbRange=%#x pvUser=%VGv pfnWriteCallback=%#x pfnReadCallback=%#x pfnFillCallback=%#x pszDesc=%s\n", pDevIns, GCPhysStart, cbRange, pvUser, pfnWriteCallback, pfnReadCallback, pfnFillCallback, pszDesc)); /* * Validate input. */ if (!pfnWriteCallback && !pfnReadCallback) { AssertMsgFailed(("No callbacks! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); return VERR_INVALID_PARAMETER; } RTGCPHYS GCPhysLast = GCPhysStart + (cbRange - 1); if (GCPhysLast < GCPhysStart) { AssertMsgFailed(("Wrapped! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); return VERR_IOM_INVALID_MMIO_RANGE; } /* * Check that a ring-3 MMIO range exists. */ RTGCPHYS GCPhys = GCPhysStart; while (GCPhys <= GCPhysLast && GCPhys >= GCPhysStart) { PIOMMMIORANGER3 pRange = (PIOMMMIORANGER3)RTAvlroGCPhysRangeGet(&pVM->iom.s.CTXSUFF(pTrees)->MMIOTreeR3, GCPhys); if (!pRange) { AssertMsgFailed(("No R3 range! GCPhys=%#x %#x LB%#x %s\n", GCPhys, GCPhysStart, cbRange, pszDesc)); return VERR_IOM_NO_HC_MMIO_RANGE; } #ifndef IOM_NO_PDMINS_CHECKS #ifndef IN_GC if (pRange->pDevIns != pDevIns) #else if (pRange->pDevIns != MMHyperGC2HC(pVM, pDevIns)) #endif { AssertMsgFailed(("Not owner! GCPhys=%#x %#x LB%#x %s / %#x-%#x %s\n", GCPhys, GCPhysStart, cbRange, pszDesc, pRange->Core.Key, pRange->Core.KeyLast, MMHyper2HC(pVM, (uintptr_t)pRange->pszDesc))); return VERR_IOM_NOT_MMIO_RANGE_OWNER; } #endif /* !IOM_NO_PDMINS_CHECKS */ /* next */ Assert(GCPhys <= pRange->Core.KeyLast); GCPhys = pRange->Core.KeyLast + 1; } /* * Allocate new range record and initialize it. */ PIOMMMIORANGEGC pRange; int rc = MMHyperAlloc(pVM, sizeof(*pRange), 0, MM_TAG_IOM, (void **)&pRange); if (VBOX_SUCCESS(rc)) { pRange->Core.Key = GCPhysStart; pRange->Core.KeyLast = GCPhysStart + (cbRange - 1); pRange->GCPhys = GCPhysStart; pRange->cbSize = cbRange; pRange->pvUser = pvUser; pRange->pfnReadCallback = pfnReadCallback; pRange->pfnWriteCallback= pfnWriteCallback; pRange->pfnFillCallback = pfnFillCallback; #ifdef IN_GC pRange->pDevIns = pDevIns; pRange->pszDesc = MMHyperGC2HC(pVM, (void *)pszDesc); #else pRange->pDevIns = MMHyperHC2GC(pVM, pDevIns); pRange->pszDesc = pszDesc; #endif /* * Try insert it. */ if (RTAvlroGCPhysInsert(&pVM->iom.s.CTXSUFF(pTrees)->MMIOTreeGC, &pRange->Core)) return VINF_SUCCESS; AssertMsgFailed(("Conflict! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); MMHyperFree(pVM, pRange); rc = VERR_IOM_MMIO_RANGE_CONFLICT; } return rc; } #endif /** * Registers a Port IO R0 handler. * * This API is called by PDM on behalf of a device. Devices must first register ring-3 ranges * using IOMR3IOPortRegisterR3() before calling this function. * * * @returns VBox status code. * * @param pVM VM handle. * @param pDevIns PDM device instance owning the port range. * @param PortStart First port number in the range. * @param cPorts Number of ports to register. * @param pvUser User argument for the callbacks. * @param pfnOutCallback Pointer to function which is gonna handle OUT operations in GC. * @param pfnInCallback Pointer to function which is gonna handle IN operations in GC. * @param pfnOutStrCallback Pointer to function which is gonna handle OUT operations in GC. * @param pfnInStrCallback Pointer to function which is gonna handle IN operations in GC. * @param pszDesc Pointer to description string. This must not be freed. */ IOMDECL(int) IOMIOPortRegisterR0(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) { LogFlow(("IOMIOPortRegisterR0: pDevIns=%p PortStart=%#x cPorts=%#x pvUser=%VHv pfnOutCallback=%VGv pfnInCallback=%VGv pfnOutStrCallback=%VGv pfnInStrCallback=%VGv pszDesc=%s\n", pDevIns, PortStart, cPorts, pvUser, pfnOutCallback, pfnInCallback, pfnOutStrCallback, pfnInStrCallback, pszDesc)); /* * Validate input. */ if ( (RTUINT)PortStart + cPorts <= (RTUINT)PortStart || (RTUINT)PortStart + cPorts > 0x10000) { AssertMsgFailed(("Invalid port range %#x-%#x! (%s)\n", PortStart, (RTUINT)PortStart + (cPorts - 1), pszDesc)); return VERR_IOM_INVALID_IOPORT_RANGE; } RTIOPORT PortLast = PortStart + (cPorts - 1); if (!pfnOutCallback && !pfnInCallback) { AssertMsgFailed(("Invalid port range %#x-%#x! No callbacks! (%s)\n", PortStart, PortLast, pszDesc)); return VERR_INVALID_PARAMETER; } /* * Validate that there are ring-3 ranges for the ports. */ RTIOPORT Port = PortStart; while (Port <= PortLast && Port >= PortStart) { PIOMIOPORTRANGER3 pRange = (PIOMIOPORTRANGER3)RTAvlroIOPortRangeGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortTreeR3, Port); if (!pRange) { AssertMsgFailed(("No R3! Port=#x %#x-%#x! (%s)\n", Port, PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); return VERR_IOM_NO_HC_IOPORT_RANGE; } #ifndef IOM_NO_PDMINS_CHECKS # ifndef IN_GC if (pRange->pDevIns != pDevIns) # else if (pRange->pDevIns != MMHyperGC2HC(pVM, pDevIns)) # endif { AssertMsgFailed(("Not owner! Port=%#x %#x-%#x! (%s)\n", Port, PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); return VERR_IOM_NOT_IOPORT_RANGE_OWNER; } #endif Port = pRange->Core.KeyLast + 1; } /* Flush the IO port lookup cache */ IOMFlushCache(pVM); /* * Allocate new range record and initialize it. */ PIOMIOPORTRANGER0 pRange; int rc = MMHyperAlloc(pVM, sizeof(*pRange), 0, MM_TAG_IOM, (void **)&pRange); if (VBOX_SUCCESS(rc)) { pRange->Core.Key = PortStart; pRange->Core.KeyLast = PortLast; pRange->Port = PortStart; pRange->cPorts = cPorts; pRange->pvUser = pvUser; pRange->pfnOutCallback = pfnOutCallback; pRange->pfnInCallback = pfnInCallback; pRange->pfnOutStrCallback = pfnOutStrCallback; pRange->pfnInStrCallback = pfnInStrCallback; #ifdef IN_GC pRange->pDevIns = MMHyperGCToR0(pVM, pDevIns); pRange->pszDesc = MMHyperGCToR3(pVM, (void *)pszDesc); #elif defined(IN_RING3) pRange->pDevIns = MMHyperR3ToR0(pVM, pDevIns); pRange->pszDesc = pszDesc; #else pRange->pDevIns = pDevIns; pRange->pszDesc = MMHyperR0ToR3(pVM, (RTR0PTR)pszDesc); #endif /* * Insert it. */ if (RTAvlroIOPortInsert(&pVM->iom.s.CTXSUFF(pTrees)->IOPortTreeR0, &pRange->Core)) return VINF_SUCCESS; /* conflict. */ AssertMsgFailed(("Port range %#x-%#x (%s) conflicts with existing range(s)!\n", PortStart, (unsigned)PortStart + cPorts - 1, pszDesc)); MMHyperFree(pVM, pRange); rc = VERR_IOM_IOPORT_RANGE_CONFLICT; } return rc; } /** * Registers a Memory Mapped I/O R0 handler range. * * This API is called by PDM on behalf of a device. Devices must first register ring-3 ranges * using IOMMR3MIORegisterHC() before calling this function. * * * @returns VBox status code. * * @param pVM VM handle. * @param pDevIns PDM device instance owning the MMIO range. * @param GCPhysStart First physical address in the range. * @param cbRange The size of the range (in bytes). * @param pvUser User argument for the callbacks. * @param pfnWriteCallback Pointer to function which is gonna handle Write operations. * @param pfnReadCallback Pointer to function which is gonna handle Read operations. * @param pfnFillCallback Pointer to function which is gonna handle Fill/memset operations. * @param pszDesc Pointer to description string. This must not be freed. */ IOMDECL(int) IOMMMIORegisterR0(PVM pVM, PPDMDEVINS pDevIns, RTGCPHYS GCPhysStart, RTUINT cbRange, RTR0PTR pvUser, R0PTRTYPE(PFNIOMMMIOWRITE) pfnWriteCallback, R0PTRTYPE(PFNIOMMMIOREAD) pfnReadCallback, R0PTRTYPE(PFNIOMMMIOFILL) pfnFillCallback, const char *pszDesc) { LogFlow(("IOMMMIORegisterR0: pDevIns=%p GCPhysStart=%#x cbRange=%#x pvUser=%VHv pfnWriteCallback=%#x pfnReadCallback=%#x pfnFillCallback=%#x pszDesc=%s\n", pDevIns, GCPhysStart, cbRange, pvUser, pfnWriteCallback, pfnReadCallback, pfnFillCallback, pszDesc)); /* * Validate input. */ if (!pfnWriteCallback && !pfnReadCallback) { AssertMsgFailed(("No callbacks! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); return VERR_INVALID_PARAMETER; } RTGCPHYS GCPhysLast = GCPhysStart + (cbRange - 1); if (GCPhysLast < GCPhysStart) { AssertMsgFailed(("Wrapped! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); return VERR_IOM_INVALID_MMIO_RANGE; } /* * Check that a ring-3 MMIO range exists. */ RTGCPHYS GCPhys = GCPhysStart; while (GCPhys <= GCPhysLast && GCPhys >= GCPhysStart) { PIOMMMIORANGER3 pRange = (PIOMMMIORANGER3)RTAvlroGCPhysRangeGet(&pVM->iom.s.CTXSUFF(pTrees)->MMIOTreeR3, GCPhys); if (!pRange) { AssertMsgFailed(("No R3 range! GCPhys=%#x %#x LB%#x %s\n", GCPhys, GCPhysStart, cbRange, pszDesc)); return VERR_IOM_NO_HC_MMIO_RANGE; } #ifndef IOM_NO_PDMINS_CHECKS # ifndef IN_GC if (pRange->pDevIns != pDevIns) # else if (pRange->pDevIns != MMHyperGC2HC(pVM, pDevIns)) # endif { AssertMsgFailed(("Not owner! GCPhys=%#x %#x LB%#x %s / %#x-%#x %s\n", GCPhys, GCPhysStart, cbRange, pszDesc, pRange->Core.Key, pRange->Core.KeyLast, MMHyper2HC(pVM, (uintptr_t)pRange->pszDesc))); return VERR_IOM_NOT_MMIO_RANGE_OWNER; } #endif /* !IOM_NO_PDMINS_CHECKS */ /* next */ Assert(GCPhys <= pRange->Core.KeyLast); GCPhys = pRange->Core.KeyLast + 1; } /* * Allocate new range record and initialize it. */ PIOMMMIORANGER0 pRange; int rc = MMHyperAlloc(pVM, sizeof(*pRange), 0, MM_TAG_IOM, (void **)&pRange); if (VBOX_SUCCESS(rc)) { pRange->Core.Key = GCPhysStart; pRange->Core.KeyLast = GCPhysStart + (cbRange - 1); pRange->GCPhys = GCPhysStart; pRange->cbSize = cbRange; pRange->pvUser = pvUser; pRange->pfnReadCallback = pfnReadCallback; pRange->pfnWriteCallback= pfnWriteCallback; pRange->pfnFillCallback = pfnFillCallback; #ifdef IN_GC pRange->pDevIns = MMHyperGCToR0(pVM, pDevIns); pRange->pszDesc = MMHyperGCToR3(pVM, (void *)pszDesc); #elif defined(IN_RING3) pRange->pDevIns = MMHyperR3ToR0(pVM, pDevIns); pRange->pszDesc = pszDesc; #else pRange->pDevIns = pDevIns; pRange->pszDesc = MMHyperR0ToR3(pVM, (RTR0PTR)pszDesc); #endif /* * Try insert it. */ if (RTAvlroGCPhysInsert(&pVM->iom.s.CTXSUFF(pTrees)->MMIOTreeR0, &pRange->Core)) return VINF_SUCCESS; AssertMsgFailed(("Conflict! %#x LB%#x %s\n", GCPhysStart, cbRange, pszDesc)); MMHyperFree(pVM, pRange); rc = VERR_IOM_MMIO_RANGE_CONFLICT; } return rc; } /** * Flushes the IOM port & statistics lookup cache * * @param pVM The VM. */ IOMDECL(void) IOMFlushCache(PVM pVM) { /* * Caching of port and statistics (saves some time in rep outs/ins instruction emulation) */ pVM->iom.s.pRangeLastReadGC = 0; pVM->iom.s.pRangeLastWriteGC = 0; pVM->iom.s.pStatsLastReadGC = 0; pVM->iom.s.pStatsLastWriteGC = 0; pVM->iom.s.pRangeLastReadR3 = 0; pVM->iom.s.pRangeLastWriteR3 = 0; pVM->iom.s.pStatsLastReadR3 = 0; pVM->iom.s.pStatsLastWriteR3 = 0; pVM->iom.s.pRangeLastReadR0 = 0; pVM->iom.s.pRangeLastWriteR0 = 0; pVM->iom.s.pStatsLastReadR0 = 0; pVM->iom.s.pStatsLastWriteR0 = 0; } //#undef LOG_GROUP //#define LOG_GROUP LOG_GROUP_IOM_IOPORT /** * Reads an I/O port register. * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only) * * @param pVM VM handle. * @param Port The port to read. * @param pu32Value Where to store the value read. * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes. */ IOMDECL(int) IOMIOPortRead(PVM pVM, RTIOPORT Port, uint32_t *pu32Value, size_t cbValue) { #ifdef VBOX_WITH_STATISTICS /* * Get the statistics record. */ PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead); if (!pStats || pStats->Core.Key != Port) { pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port); if (pStats) CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats; } #endif /* * Get handler for current context. */ CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead); if ( !pRange || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts) { pRange = iomIOPortGetRange(&pVM->iom.s, Port); if (pRange) CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange; } #ifdef IN_GC Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */ #endif if (pRange) { /* * Found a range. */ #ifndef IN_RING3 if (!pRange->pfnInCallback) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3)); # endif return VINF_IOM_HC_IOPORT_READ; } #endif /* call the device. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a); #endif int rc = pRange->pfnInCallback(pRange->pDevIns, pRange->pvUser, Port, pu32Value, cbValue); #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a); if (rc == VINF_SUCCESS && pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); # ifndef IN_RING3 else if (rc == VINF_IOM_HC_IOPORT_READ && pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3)); # endif #endif if (rc == VERR_IOM_IOPORT_UNUSED) { /* make return value */ rc = VINF_SUCCESS; switch (cbValue) { case 1: *(uint8_t *)pu32Value = 0xff; break; case 2: *(uint16_t *)pu32Value = 0xffff; break; case 4: *(uint32_t *)pu32Value = 0xffffffff; break; default: AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port)); return VERR_IOM_INVALID_IOPORT_SIZE; } } Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=%Vrc\n", Port, *pu32Value, cbValue, rc)); return rc; } #ifndef IN_RING3 /* * Handler in ring-3? */ PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port); if (pRangeR3) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3)); # endif return VINF_IOM_HC_IOPORT_READ; } #endif /* * Ok, no handler for this port. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); else { # ifndef IN_RING3 /* Ring-3 will have to create the statistics record. */ return VINF_IOM_HC_IOPORT_READ; # else pStats = iomr3IOPortStatsCreate(pVM, Port, NULL); if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); # endif } #endif /* make return value */ switch (cbValue) { case 1: *(uint8_t *)pu32Value = 0xff; break; case 2: *(uint16_t *)pu32Value = 0xffff; break; case 4: *(uint32_t *)pu32Value = 0xffffffff; break; default: AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port)); return VERR_IOM_INVALID_IOPORT_SIZE; } Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=VINF_SUCCESS\n", Port, *pu32Value, cbValue)); return VINF_SUCCESS; } /** * Reads the string buffer of an I/O port register. * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only) * * @param pVM VM handle. * @param Port The port to read. * @param pGCPtrDst Pointer to the destination buffer (GC, incremented appropriately). * @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). * */ IOMDECL(int) IOMIOPortReadString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfers, unsigned cb) { #ifdef LOG_ENABLED const RTGCUINTREG cTransfers = *pcTransfers; #endif #ifdef VBOX_WITH_STATISTICS /* * Get the statistics record. */ PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead); if (!pStats || pStats->Core.Key != Port) { pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port); if (pStats) CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats; } #endif /* * Get handler for current context. */ CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead); if ( !pRange || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts) { pRange = iomIOPortGetRange(&pVM->iom.s, Port); if (pRange) CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange; } #ifdef IN_GC Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */ #endif if (pRange) { /* * Found a range. */ #ifndef IN_RING3 if (!pRange->pfnInStrCallback) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3)); # endif return VINF_IOM_HC_IOPORT_READ; } #endif /* call the device. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a); #endif int rc = pRange->pfnInStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrDst, pcTransfers, cb); #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a); if (rc == VINF_SUCCESS && pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); # ifndef IN_RING3 else if (rc == VINF_IOM_HC_IOPORT_READ && pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In, ToR3)); # endif #endif Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n", Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb, rc)); return rc; } #ifndef IN_RING3 /* * Handler in ring-3? */ PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port); if (pRangeR3) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3)); # endif return VINF_IOM_HC_IOPORT_READ; } #endif /* * Ok, no handler for this port. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); else { # ifndef IN_RING3 /* Ring-3 will have to create the statistics record. */ return VINF_IOM_HC_IOPORT_READ; # else pStats = iomr3IOPortStatsCreate(pVM, Port, NULL); if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(In)); # endif } #endif Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n", Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb)); return VINF_SUCCESS; } /** * Writes to an I/O port register. * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only) * * @param pVM VM handle. * @param Port The port to write to. * @param u32Value The value to write. * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes. */ IOMDECL(int) IOMIOPortWrite(PVM pVM, RTIOPORT Port, uint32_t u32Value, size_t cbValue) { /** @todo bird: When I get time, I'll remove the GC tree and link the GC entries to the ring-3 node. */ #ifdef VBOX_WITH_STATISTICS /* * Find the statistics record. */ PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite); if (!pStats || pStats->Core.Key != Port) { pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port); if (pStats) CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats; } #endif /* * Get handler for current context. */ CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite); if ( !pRange || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts) { pRange = iomIOPortGetRange(&pVM->iom.s, Port); if (pRange) CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange; } #ifdef IN_GC Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); #endif if (pRange) { /* * Found a range. */ #ifndef IN_RING3 if (!pRange->pfnOutCallback) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3)); # endif return VINF_IOM_HC_IOPORT_WRITE; } #endif /* call the device. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a); #endif int rc = pRange->pfnOutCallback(pRange->pDevIns, pRange->pvUser, Port, u32Value, cbValue); #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a); if (rc == VINF_SUCCESS && pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); # ifndef IN_RING3 else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3)); # endif #endif Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d rc=%Vrc\n", Port, u32Value, cbValue, rc)); return rc; } #ifndef IN_RING3 /* * Handler in ring-3? */ PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port); if (pRangeR3) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3)); # endif return VINF_IOM_HC_IOPORT_WRITE; } #endif /* * Ok, no handler for that port. */ #ifdef VBOX_WITH_STATISTICS /* statistics. */ if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); else { # ifndef IN_RING3 /* R3 will have to create the statistics record. */ return VINF_IOM_HC_IOPORT_WRITE; # else pStats = iomr3IOPortStatsCreate(pVM, Port, NULL); if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); # endif } #endif Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d nop\n", Port, u32Value, cbValue)); return VINF_SUCCESS; } /** * Writes the string buffer of an I/O port register. * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only) * * @param pVM VM handle. * @param Port The port to write. * @param pGCPtrSrc Pointer to the source buffer (GC, incremented appropriately). * @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). * */ IOMDECL(int) IOMIOPortWriteString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfers, unsigned cb) { #ifdef LOG_ENABLED const RTGCUINTREG cTransfers = *pcTransfers; #endif #ifdef VBOX_WITH_STATISTICS /* * Get the statistics record. */ PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite); if (!pStats || pStats->Core.Key != Port) { pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port); if (pStats) CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats; } #endif /* * Get handler for current context. */ CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite); if ( !pRange || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts) { pRange = iomIOPortGetRange(&pVM->iom.s, Port); if (pRange) CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange; } #ifdef IN_GC Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */ #endif if (pRange) { /* * Found a range. */ #ifndef IN_RING3 if (!pRange->pfnOutStrCallback) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3)); # endif return VINF_IOM_HC_IOPORT_WRITE; } #endif /* call the device. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a); #endif int rc = pRange->pfnOutStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrSrc, pcTransfers, cb); #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a); if (rc == VINF_SUCCESS && pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); # ifndef IN_RING3 else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3)); # endif #endif Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n", Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb, rc)); return rc; } #ifndef IN_RING3 /* * Handler in ring-3? */ PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port); if (pRangeR3) { # ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3)); # endif return VINF_IOM_HC_IOPORT_WRITE; } #endif /* * Ok, no handler for this port. */ #ifdef VBOX_WITH_STATISTICS if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); else { # ifndef IN_RING3 /* Ring-3 will have to create the statistics record. */ return VINF_IOM_HC_IOPORT_WRITE; # else pStats = iomr3IOPortStatsCreate(pVM, Port, NULL); if (pStats) STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out)); # endif } #endif Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n", Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb)); return VINF_SUCCESS; } /** * Checks that the operation is allowed according to the IOPL * level and I/O bitmap. * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. * @retval VINF_SUCCESS Success. * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr) * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr) * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr) * * @param pVM VM handle. * @param pCtxCore Pointer to register frame. * @param Port The I/O port number. * @param cb The access size. */ IOMDECL(int) IOMInterpretCheckPortIOAccess(PVM pVM, PCPUMCTXCORE pCtxCore, RTIOPORT Port, unsigned cb) { /* * If this isn't ring-0, we have to check for I/O privileges. */ uint32_t efl = CPUMRawGetEFlags(pVM, pCtxCore); uint32_t cpl = CPUMGetGuestCPL(pVM, pCtxCore); if ( ( cpl > 0 && X86_EFL_GET_IOPL(efl) < cpl) || pCtxCore->eflags.Bits.u1VM /* IOPL is ignored in V86 mode; always check TSS bitmap */ ) { /* * Get TSS location and check if there can be a I/O bitmap. */ RTGCUINTPTR GCPtrTss; RTGCUINTPTR cbTss; bool fCanHaveIOBitmap; int rc = SELMGetTSSInfo(pVM, &GCPtrTss, &cbTss, &fCanHaveIOBitmap); if (VBOX_FAILURE(rc)) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d %Vrc -> #GP(0)\n", Port, cb, rc)); return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0); } if ( !fCanHaveIOBitmap || cbTss <= sizeof(VBOXTSS)) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d cbTss=%#x fCanHaveIOBitmap=%RTbool -> #GP(0)\n", Port, cb, cbTss, fCanHaveIOBitmap)); return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0); } /* * Fetch the I/O bitmap offset. */ uint16_t offIOPB; rc = PGMPhysInterpretedRead(pVM, pCtxCore, &offIOPB, GCPtrTss + RT_OFFSETOF(VBOXTSS, offIoBitmap), sizeof(offIOPB)); if (rc != VINF_SUCCESS) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv %Vrc\n", Port, cb, GCPtrTss, rc)); return rc; } /* * Check the limit and read the two bitmap bytes. */ uint32_t offTss = offIOPB + (Port >> 3); if (offTss + 1 >= cbTss) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x -> #GP(0)\n", Port, cb, offTss, cbTss)); return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0); } uint16_t u16; rc = PGMPhysInterpretedRead(pVM, pCtxCore, &u16, GCPtrTss + offTss, sizeof(u16)); if (rc != VINF_SUCCESS) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv offTss=%#x -> %Vrc\n", Port, cb, GCPtrTss, offTss, rc)); return rc; } /* * All the bits must be clear. */ if ((u16 >> (Port & 7)) & ((1 << cb) - 1)) { Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d u16=%#x -> #GP(0)\n", Port, cb, u16, offTss)); return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0); } LogFlow(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x u16=%#x -> OK\n", Port, cb, u16, offTss, cbTss)); } return VINF_SUCCESS; } /** * IN , * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only) * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr) * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr) * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr) * * @param pVM The virtual machine (GC pointer ofcourse). * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure. * @param pCpu Disassembler CPU state. */ IOMDECL(int) IOMInterpretIN(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu) { #ifdef IN_GC STAM_COUNTER_INC(&pVM->iom.s.StatGCInstIn); #endif /* * Get port number from second parameter. * And get the register size from the first parameter. */ uint32_t uPort = 0; unsigned cbSize = 0; bool fRc = iomGCGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &uPort, &cbSize); AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc); cbSize = iomGCGetRegSize(pCpu, &pCpu->param1); Assert(cbSize > 0); int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize); if (rc == VINF_SUCCESS) { /* * Attemp to read the port. */ uint32_t u32Data = ~0U; rc = IOMIOPortRead(pVM, uPort, &u32Data, cbSize); if (IOM_SUCCESS(rc)) { /* * Store the result in the AL|AX|EAX register. */ fRc = iomGCSaveDataToReg(pCpu, &pCpu->param1, pRegFrame, u32Data); AssertMsg(fRc, ("Failed to store register value!\n")); NOREF(fRc); } else AssertMsg(rc == VINF_IOM_HC_IOPORT_READ || VBOX_FAILURE(rc), ("%Vrc\n", rc)); } else AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc)); return rc; } /** * OUT , * * @returns Strict VBox status code. Informational status codes other than the one documented * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success. * @retval VINF_SUCCESS Success. * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the * status code must be passed on to EM. * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only) * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr) * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr) * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr) * * @param pVM The virtual machine (GC pointer ofcourse). * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure. * @param pCpu Disassembler CPU state. */ IOMDECL(int) IOMInterpretOUT(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu) { #ifdef IN_GC STAM_COUNTER_INC(&pVM->iom.s.StatGCInstOut); #endif /* * Get port number from first parameter. * And get the register size and value from the second parameter. */ uint32_t uPort = 0; unsigned cbSize = 0; bool fRc = iomGCGetRegImmData(pCpu, &pCpu->param1, pRegFrame, &uPort, &cbSize); AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc); int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize); if (rc == VINF_SUCCESS) { uint32_t u32Data = 0; fRc = iomGCGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &u32Data, &cbSize); AssertMsg(fRc, ("Failed to get reg value!\n")); NOREF(fRc); /* * Attempt to write to the port. */ rc = IOMIOPortWrite(pVM, uPort, u32Data, cbSize); AssertMsg(rc == VINF_SUCCESS || rc == VINF_IOM_HC_IOPORT_WRITE || (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) || VBOX_FAILURE(rc), ("%Vrc\n", rc)); } else AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc)); return rc; }