/* $Id: d16init.c,v 1.6.4.5 2000-09-02 20:49:09 bird Exp $ * * d16init - init routines for both drivers. * * IMPORTANT! Code and data defined here will be discarded after init is * compleated. CodeEnd and DataEnd should not be set here.? * * Copyright (c) 1999-2000 knut st. osmundsen (knut.stange.osmundsen@mynd.no) * * Project Odin Software License can be found in LICENSE.TXT * */ /******************************************************************************* * Defined Constants * *******************************************************************************/ #define INCL_16 #define INCL_DOSFILEMGR #define INCL_DOSDEVICES #define INCL_DOSMISC #define INCL_DOSERRORS #define INCL_NOPMAPI /******************************************************************************* * Header Files * *******************************************************************************/ #include #include #include #include #include #include #include #include #include "devSegDf.h" #undef DATA16_INIT #define DATA16_INIT #undef CODE16_INIT #define CODE16_INIT #include "probkrnl.h" #include "dev1632.h" #include "dev16.h" #include "vprntf16.h" #include "log.h" #include "options.h" /** * init function - device 0. * Does nothing else than setting the device_help variable and * fill the request packet. * @returns Status word. * @param pRpIn Pointer to input request packet. Actually the same memory as pRpOut but another struct. * @param pRpOut Pointer to output request packet. Actually the same memory as pRpIn but another struct. * @remark pRpIn and pRpOut points to the same memory. */ USHORT NEAR dev0Init(PRPINITIN pRpIn, PRPINITOUT pRpOut) { APIRET rc; Device_Help = pRpIn->DevHlpEP; /* * Does this work at Ring-3 (inittime)? * If this work we could be saved from throuble! */ rc = initGetDosTableData(); if (rc != NO_ERROR) printf16("win32k - elf$: initGetDosTableData failed with rc=%d\n", rc); pRpOut->BPBArray = NULL; pRpOut->CodeEnd = (USHORT)&CODE16_INITSTART; pRpOut->DataEnd = (USHORT)&DATA16_INITSTART; pRpOut->Unit = 0; pRpOut->rph.Status = STATUS_DONE; return STATUS_DONE; } /** * init function - device 1. * We will send an IOCtl request to the elf$ (device 0) which will * perform the Ring-0 initiation of the driver. * @returns Status word. * @param pRpIn Pointer to input request packet. Actually the same memory as pRpOut but another struct. * @param pRpOut Pointer to output request packet. Actually the same memory as pRpIn but another struct. * @remark pRpIn and pRpOut points to the same memory. */ USHORT NEAR dev1Init(PRPINITIN pRpIn, PRPINITOUT pRpOut) { APIRET rc; D16R0INITPARAM param; D16R0INITDATA data = {0}; HFILE hDev0 = 0; USHORT usAction = 0; NPSZ npszErrMsg = NULL; /* * Probe kernel data. */ rc = ProbeKernel(pRpIn); if (rc == NO_ERROR) { /* * Open and send a Ring-0 init packet to elf$. * If this succeeds win32k$ init succeeds. */ rc = DosOpen("\\dev\\elf$", &hDev0, &usAction, 0UL, FILE_NORMAL, OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS, OPEN_SHARE_DENYNONE | OPEN_ACCESS_READONLY, 0UL); if (rc == NO_ERROR) { param.pRpInitIn = pRpIn; rc = DosDevIOCtl(&data, ¶m, D16_IOCTL_RING0INIT, D16_IOCTL_CAT, hDev0); if (rc == NO_ERROR) { if ((rc = data.Status) == STATUS_DONE) { if (!options.fQuiet) printf16("Win32k.sys succesfully initiated!\n"); pRpOut->Status = pRpOut->rph.Status = data.Status; } else npszErrMsg = "Ring-0 initiation failed. rc=%d\n"; } else npszErrMsg = "Ring-0 init: DosDevIOCtl failed. rc=%d\n"; DosClose(hDev0); } else npszErrMsg = "Ring-0 init: DosOpen failed. rc=%d\n"; } else npszErrMsg = ""; /* ProbeKrnl do its own complaining, but we need something here to indicate failure. */ /* * Fill return data. */ pRpOut->CodeEnd = (USHORT)&CODE16_INITSTART; pRpOut->DataEnd = (USHORT)&DATA16_INITSTART; pRpOut->BPBArray= NULL; pRpOut->Unit = 0; /* * Any errors?, if so complain! */ if (npszErrMsg) { printf16(npszErrMsg, rc); pRpOut->Status = pRpOut->rph.Status = STATUS_DONE | STERR | ERROR_I24_QUIET_INIT_FAIL; } /* Init is completed. */ fInitTime = FALSE; /* successful return */ return pRpOut->rph.Status; } /** * R0 16-bit initiation. * This gets TKSSBase, thunks parameters and calls R0 32-bit initiation function. * @returns Status word. * @param pRp Generic IO Control request packet. */ USHORT NEAR R0Init16(PRP_GENIOCTL pRp) { USHORT usRc = STATUS_DONE; APIRET rc; /* First we're to get the DosTable2 stuff. */ rc = initGetDosTableData(); if (rc == NO_ERROR) { ULONG cPages; char hLockParm[12] = {0}; ULONG ulLinParm; char hLockData[12] = {0}; ULONG ulLinData; /* * Thunk the request packet and lock userdata. */ if (!DevHelp_VirtToLin(SELECTOROF(pRp->ParmPacket), OFFSETOF(pRp->ParmPacket), &ulLinParm) && !DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), &ulLinData) ) { if (!(rc = DevHelp_VMLock(VMDHL_LONG | VMDHL_WRITE, ulLinParm, sizeof(D16R0INITPARAM), (LIN)~0UL, SSToDS_16(&hLockParm[0]), &cPages)) && !DevHelp_VMLock(VMDHL_LONG | VMDHL_WRITE, ulLinData, sizeof(D16R0INITDATA), (LIN)~0UL, SSToDS_16(&hLockData[0]), &cPages) ) { /* * -data and param is locked (do we need to lock the request packet too ?).- * Create new 32-bit init packet - Parameter pointer is thunked. */ RP32INIT rp32init; _fmemcpy(&rp32init, ((PD16R0INITPARAM)pRp->ParmPacket)->pRpInitIn, sizeof(RPINITIN)); if (((PD16R0INITPARAM)pRp->ParmPacket)->pRpInitIn->InitArgs == NULL || !DevHelp_VirtToLin(SELECTOROF(rp32init.InitArgs), OFFSETOF(rp32init.InitArgs), (PLIN)&rp32init.InitArgs) ) { usRc = CallR0Init32(SSToDS_16(&rp32init)); } else usRc |= ERROR_I24_INVALID_PARAMETER; ((PD16R0INITDATA)pRp->DataPacket)->Status = usRc; /* * finished - unlock data and parm */ DevHelp_VMUnLock((LIN)SSToDS_16(&hLockParm[0])); DevHelp_VMUnLock((LIN)SSToDS_16(&hLockData[0])); } else usRc |= ERROR_I24_INVALID_PARAMETER; } else usRc |= ERROR_I24_INVALID_PARAMETER; } else usRc |= ERROR_I24_GEN_FAILURE; return usRc; } /** * Gets the data we need from the DosTables. * This data is TKSSBase16, R0FlatCS16 and R0FlatDS16. * @returns Same as DevHelp_GetDosVar. * @status completely implemented. * @author knut st. osmundsen (knut.stange.osmundsen@pmsc.no) * @remark If you are not sure if TKSSBase16 is set or not, call this. * After R0Init16 is called TKSSBase16 _is_ set. * IMPORTANT! This function must _not_ be called after the initiation of the second device driver!!! * (Since this is init code not present after init...) */ USHORT NEAR initGetDosTableData(void) { APIRET rc; PDOSTABLE pDT; PDOSTABLE2 pDT2; if (TKSSBase16 != 0) return NO_ERROR; /* _asm { int 3; } */ /* First we're to get the DosTable2 stuff. */ rc = DevHelp_GetDOSVar(9, 0, &pDT); if (rc == NO_ERROR) { pDT2 = (PDOSTABLE2)((char FAR *)pDT + pDT->cul*4 + 1); TKSSBase16 = (ULONG)pDT2->pTKSSBase; R0FlatCS16 = (USHORT)pDT2->R0FlatCS; R0FlatDS16 = (USHORT)pDT2->R0FlatDS; } return rc; }