diff options
Diffstat (limited to 'src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp')
| -rw-r--r-- | src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp b/src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp new file mode 100644 index 00000000..7cfd9c47 --- /dev/null +++ b/src/VBox/HostDrivers/Support/os2/SUPDrv-os2.cpp @@ -0,0 +1,547 @@ +/* $Id: SUPDrv-os2.cpp $ */ +/** @file + * VBoxDrv - The VirtualBox Support Driver - OS/2 specifics. + */ + +/* + * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net> + * + * Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#define LOG_GROUP LOG_GROUP_SUP_DRV +#define __STDC_CONSTANT_MACROS +#define __STDC_LIMIT_MACROS + +#include <os2ddk/bsekee.h> +#undef RT_MAX + +#include "SUPDrvInternal.h" +#include <VBox/version.h> +#include <iprt/initterm.h> +#include <iprt/string.h> +#include <iprt/spinlock.h> +#include <iprt/process.h> +#include <iprt/assert.h> +#include <VBox/log.h> +#include <iprt/param.h> + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +/** + * Device extention & session data association structure. + */ +static SUPDRVDEVEXT g_DevExt; +/** Spinlock protecting g_apSessionHashTab. */ +static RTSPINLOCK g_Spinlock = NIL_RTSPINLOCK; +/** Hash table */ +static PSUPDRVSESSION g_apSessionHashTab[19]; +/** Calculates the index into g_apSessionHashTab.*/ +#define SESSION_HASH(sfn) ((sfn) % RT_ELEMENTS(g_apSessionHashTab)) + +RT_C_DECLS_BEGIN +/* Defined in SUPDrvA-os2.asm */ +extern uint16_t g_offLogHead; +extern uint16_t volatile g_offLogTail; +extern uint16_t const g_cchLogMax; +extern char g_szLog[]; +/* (init only:) */ +extern char g_szInitText[]; +extern uint16_t g_cchInitText; +extern uint16_t g_cchInitTextMax; +RT_C_DECLS_END + + +/********************************************************************************************************************************* +* Internal Functions * +*********************************************************************************************************************************/ + + + +/** + * 32-bit Ring-0 initialization. + * + * @returns 0 on success, non-zero on failure. + * @param pszArgs Pointer to the device arguments. + */ +DECLASM(int) VBoxDrvInit(const char *pszArgs) +{ + /* + * Initialize the runtime. + */ + int rc = RTR0Init(0); + if (RT_SUCCESS(rc)) + { + Log(("VBoxDrvInit: pszArgs=%s\n", pszArgs)); + + /* + * Initialize the device extension. + */ + rc = supdrvInitDevExt(&g_DevExt, sizeof(SUPDRVSESSION)); + if (RT_SUCCESS(rc)) + { + /* + * Initialize the session hash table. + */ + rc = RTSpinlockCreate(&g_Spinlock, RTSPINLOCK_FLAGS_INTERRUPT_SAFE, "VBoxDrvOS2"); + if (RT_SUCCESS(rc)) + { + /* + * Process the commandline. Later. + */ + bool fVerbose = true; + + /* + * Success + */ + if (fVerbose) + { + strcpy(&g_szInitText[0], + "\r\n" + "VirtualBox.org Support Driver for OS/2 version " VBOX_VERSION_STRING "\r\n" + "Copyright (C) 2007 Knut St. Osmundsen\r\n" + "Copyright (C) 2007-2016 Oracle Corporation\r\n"); + g_cchInitText = strlen(&g_szInitText[0]); + } + return VINF_SUCCESS; + } + g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxDrv.sys: RTSpinlockCreate failed, rc=%Rrc\n", rc); + supdrvDeleteDevExt(&g_DevExt); + } + else + g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxDrv.sys: supdrvInitDevExt failed, rc=%Rrc\n", rc); + RTR0Term(); + } + else + g_cchInitText = RTStrPrintf(&g_szInitText[0], g_cchInitTextMax, "VBoxDrv.sys: RTR0Init failed, rc=%Rrc\n", rc); + return rc; +} + + +DECLASM(int) VBoxDrvOpen(uint16_t sfn) +{ + int rc; + PSUPDRVSESSION pSession; + + /* + * Create a new session. + */ + rc = supdrvCreateSession(&g_DevExt, true /* fUser */, true /*fUnrestricted*/, &pSession); + if (RT_SUCCESS(rc)) + { + pSession->sfn = sfn; + + /* + * Insert it into the hash table. + */ + unsigned iHash = SESSION_HASH(sfn); + RTSpinlockAcquire(g_Spinlock); + pSession->pNextHash = g_apSessionHashTab[iHash]; + g_apSessionHashTab[iHash] = pSession; + RTSpinlockRelease(g_Spinlock); + } + + Log(("VBoxDrvOpen: g_DevExt=%p pSession=%p rc=%d pid=%d\n", &g_DevExt, pSession, rc, (int)RTProcSelf())); + return rc; +} + + +DECLASM(int) VBoxDrvClose(uint16_t sfn) +{ + Log(("VBoxDrvClose: pid=%d sfn=%d\n", (int)RTProcSelf(), sfn)); + + /* + * Remove from the hash table. + */ + PSUPDRVSESSION pSession; + const RTPROCESS Process = RTProcSelf(); + const unsigned iHash = SESSION_HASH(sfn); + RTSpinlockAcquire(g_Spinlock); + + pSession = g_apSessionHashTab[iHash]; + if (pSession) + { + if ( pSession->sfn == sfn + && pSession->Process == Process) + { + g_apSessionHashTab[iHash] = pSession->pNextHash; + pSession->pNextHash = NULL; + } + else + { + PSUPDRVSESSION pPrev = pSession; + pSession = pSession->pNextHash; + while (pSession) + { + if ( pSession->sfn == sfn + && pSession->Process == Process) + { + pPrev->pNextHash = pSession->pNextHash; + pSession->pNextHash = NULL; + break; + } + + /* next */ + pPrev = pSession; + pSession = pSession->pNextHash; + } + } + } + RTSpinlockRelease(g_Spinlock); + if (!pSession) + { + OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d sfn=%d\n", (int)Process, sfn)); + return VERR_INVALID_PARAMETER; + } + + /* + * Close the session. + */ + supdrvSessionRelease(pSession); + return 0; +} + + +DECLASM(int) VBoxDrvIOCtlFast(uint16_t sfn, uint8_t iFunction) +{ + /* + * Find the session. + */ + const RTPROCESS Process = RTProcSelf(); + const unsigned iHash = SESSION_HASH(sfn); + PSUPDRVSESSION pSession; + + RTSpinlockAcquire(g_Spinlock); + pSession = g_apSessionHashTab[iHash]; + if (pSession && pSession->Process != Process) + { + do pSession = pSession->pNextHash; + while ( pSession + && ( pSession->sfn != sfn + || pSession->Process != Process)); + + if (RT_LIKELY(pSession)) + supdrvSessionRetain(pSession); + } + RTSpinlockRelease(g_Spinlock); + if (RT_UNLIKELY(!pSession)) + { + OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process)); + return VERR_INVALID_PARAMETER; + } + + /* + * Dispatch the fast IOCtl. + */ + int rc; + if ((unsigned)(iFunction - SUP_IOCTL_FAST_DO_FIRST) < (unsigned)32) + rc = supdrvIOCtlFast(iFunction, 0, &g_DevExt, pSession); + else + rc = VERR_INVALID_FUNCTION; + supdrvSessionRelease(pSession); + return rc; +} + + +DECLASM(int) VBoxDrvIOCtl(uint16_t sfn, uint8_t iCat, uint8_t iFunction, void *pvParm, void *pvData, uint16_t *pcbParm, uint16_t *pcbData) +{ + /* + * Find the session. + */ + const RTPROCESS Process = RTProcSelf(); + const unsigned iHash = SESSION_HASH(sfn); + PSUPDRVSESSION pSession; + + RTSpinlockAcquire(g_Spinlock); + pSession = g_apSessionHashTab[iHash]; + if (pSession && pSession->Process != Process) + { + do pSession = pSession->pNextHash; + while ( pSession + && ( pSession->sfn != sfn + || pSession->Process != Process)); + + if (RT_LIKELY(pSession)) + supdrvSessionRetain(pSession); + } + RTSpinlockRelease(g_Spinlock); + if (!pSession) + { + OSDBGPRINT(("VBoxDrvIoctl: WHUT?!? pSession == NULL! This must be a mistake... pid=%d\n", (int)Process)); + return VERR_INVALID_PARAMETER; + } + + /* + * Verify the category and dispatch the IOCtl. + */ + if (RT_LIKELY(iCat == SUP_CTL_CATEGORY)) + { + Log(("VBoxDrvIOCtl: pSession=%p iFunction=%#x pvParm=%p pvData=%p *pcbParm=%d *pcbData=%d\n", pSession, iFunction, pvParm, pvData, *pcbParm, *pcbData)); + Assert(pvParm); + Assert(!pvData); + + /* + * Lock the header. + */ + PSUPREQHDR pHdr = (PSUPREQHDR)pvParm; + AssertReturn(*pcbParm == sizeof(*pHdr), VERR_INVALID_PARAMETER); + KernVMLock_t Lock; + int rc = KernVMLock(VMDHL_WRITE, pHdr, *pcbParm, &Lock, (KernPageList_t *)-1, NULL); + AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pHdr, *pcbParm, &Lock, rc), VERR_LOCK_FAILED); + + /* + * Validate the header. + */ + if (RT_LIKELY((pHdr->fFlags & SUPREQHDR_FLAGS_MAGIC_MASK) == SUPREQHDR_FLAGS_MAGIC)) + { + uint32_t cbReq = RT_MAX(pHdr->cbIn, pHdr->cbOut); + if (RT_LIKELY( pHdr->cbIn >= sizeof(*pHdr) + && pHdr->cbOut >= sizeof(*pHdr) + && cbReq <= _1M*16)) + { + /* + * Lock the rest of the buffer if necessary. + */ + if (((uintptr_t)pHdr & PAGE_OFFSET_MASK) + cbReq > PAGE_SIZE) + { + rc = KernVMUnlock(&Lock); + AssertMsgReturn(!rc, ("KernVMUnlock(Lock) -> %#x\n", rc), VERR_LOCK_FAILED); + + rc = KernVMLock(VMDHL_WRITE, pHdr, cbReq, &Lock, (KernPageList_t *)-1, NULL); + AssertMsgReturn(!rc, ("KernVMLock(VMDHL_WRITE, %p, %#x, &p, NULL, NULL) -> %d\n", pHdr, cbReq, &Lock, rc), VERR_LOCK_FAILED); + } + + /* + * Process the IOCtl. + */ + rc = supdrvIOCtl(iFunction, &g_DevExt, pSession, pHdr, cbReq); + } + else + { + OSDBGPRINT(("VBoxDrvIOCtl: max(%#x,%#x); iCmd=%#x\n", pHdr->cbIn, pHdr->cbOut, iFunction)); + rc = VERR_INVALID_PARAMETER; + } + } + else + { + OSDBGPRINT(("VBoxDrvIOCtl: bad magic fFlags=%#x; iCmd=%#x\n", pHdr->fFlags, iFunction)); + rc = VERR_INVALID_PARAMETER; + } + + /* + * Unlock and return. + */ + int rc2 = KernVMUnlock(&Lock); + AssertMsg(!rc2, ("rc2=%d\n", rc2)); NOREF(rc2);s + } + else + rc = VERR_NOT_SUPPORTED; + + supdrvSessionRelease(pSession); + Log2(("VBoxDrvIOCtl: returns %d\n", rc)); + return rc; +} + + +void VBOXCALL supdrvOSCleanupSession(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession) +{ + NOREF(pDevExt); + NOREF(pSession); +} + + +void VBOXCALL supdrvOSSessionHashTabInserted(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser) +{ + NOREF(pDevExt); NOREF(pSession); NOREF(pvUser); +} + + +void VBOXCALL supdrvOSSessionHashTabRemoved(PSUPDRVDEVEXT pDevExt, PSUPDRVSESSION pSession, void *pvUser) +{ + NOREF(pDevExt); NOREF(pSession); NOREF(pvUser); +} + + +void VBOXCALL supdrvOSObjInitCreator(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession) +{ + NOREF(pObj); + NOREF(pSession); +} + + +bool VBOXCALL supdrvOSObjCanAccess(PSUPDRVOBJ pObj, PSUPDRVSESSION pSession, const char *pszObjName, int *prc) +{ + NOREF(pObj); + NOREF(pSession); + NOREF(pszObjName); + NOREF(prc); + return false; +} + + +bool VBOXCALL supdrvOSGetForcedAsyncTscMode(PSUPDRVDEVEXT pDevExt) +{ + NOREF(pDevExt); + return false; +} + + +bool VBOXCALL supdrvOSAreCpusOfflinedOnSuspend(void) +{ + return false; +} + + +bool VBOXCALL supdrvOSAreTscDeltasInSync(void) +{ + NOREF(pDevExt); + return false; +} + + +int VBOXCALL supdrvOSLdrOpen(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename) +{ + NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename); + return VERR_NOT_SUPPORTED; +} + + +int VBOXCALL supdrvOSLdrValidatePointer(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, void *pv, + const uint8_t *pbImageBits, const char *pszSymbol) +{ + NOREF(pDevExt); NOREF(pImage); NOREF(pv); NOREF(pbImageBits); NOREF(pszSymbol); + return VERR_NOT_SUPPORTED; +} + + +int VBOXCALL supdrvOSLdrLoad(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const uint8_t *pbImageBits, PSUPLDRLOAD pReq) +{ + NOREF(pDevExt); NOREF(pImage); NOREF(pbImageBits); NOREF(pReq); + return VERR_NOT_SUPPORTED; +} + + +void VBOXCALL supdrvOSLdrUnload(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage) +{ + NOREF(pDevExt); NOREF(pImage); +} + + +void VBOXCALL supdrvOSLdrNotifyOpened(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, const char *pszFilename) +{ + NOREF(pDevExt); NOREF(pImage); NOREF(pszFilename); +} + + +void VBOXCALL supdrvOSLdrNotifyUnloaded(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage) +{ + NOREF(pDevExt); NOREF(pImage); +} + + +int VBOXCALL supdrvOSLdrQuerySymbol(PSUPDRVDEVEXT pDevExt, PSUPDRVLDRIMAGE pImage, + const char *pszSymbol, size_t cchSymbol, void **ppvSymbol) +{ + RT_NOREF(pDevExt, pImage, pszSymbol, cchSymbol, ppvSymbol); + return VERR_WRONG_ORDER; +} + + +#ifdef SUPDRV_WITH_MSR_PROBER + +int VBOXCALL supdrvOSMsrProberRead(uint32_t uMsr, RTCPUID idCpu, uint64_t *puValue) +{ + NOREF(uMsr); NOREF(idCpu); NOREF(puValue); + return VERR_NOT_SUPPORTED; +} + + +int VBOXCALL supdrvOSMsrProberWrite(uint32_t uMsr, RTCPUID idCpu, uint64_t uValue) +{ + NOREF(uMsr); NOREF(idCpu); NOREF(uValue); + return VERR_NOT_SUPPORTED; +} + + +int VBOXCALL supdrvOSMsrProberModify(RTCPUID idCpu, PSUPMSRPROBER pReq) +{ + NOREF(idCpu); NOREF(pReq); + return VERR_NOT_SUPPORTED; +} + +#endif /* SUPDRV_WITH_MSR_PROBER */ + + +/** + * Callback for writing to the log buffer. + * + * @returns number of bytes written. + * @param pvArg Unused. + * @param pachChars Pointer to an array of utf-8 characters. + * @param cbChars Number of bytes in the character array pointed to by pachChars. + */ +static DECLCALLBACK(size_t) VBoxDrvLogOutput(void *pvArg, const char *pachChars, size_t cbChars) +{ + size_t cchWritten = 0; + while (cbChars-- > 0) + { + const uint16_t offLogHead = g_offLogHead; + const uint16_t offLogHeadNext = (offLogHead + 1) & (g_cchLogMax - 1); + if (offLogHeadNext == g_offLogTail) + break; /* no */ + g_szLog[offLogHead] = *pachChars++; + g_offLogHead = offLogHeadNext; + cchWritten++; + } + return cchWritten; +} + + +SUPR0DECL(int) SUPR0Printf(const char *pszFormat, ...) +{ + va_list va; + +#if 0 //def DEBUG_bird + va_start(va, pszFormat); + RTLogComPrintfV(pszFormat, va); + va_end(va); +#endif + + va_start(va, pszFormat); + int cch = RTLogFormatV(VBoxDrvLogOutput, NULL, pszFormat, va); + va_end(va); + + return cch; +} + + +SUPR0DECL(uint32_t) SUPR0GetKernelFeatures(void) +{ + return 0; +} + |