/* $Id: d16strat.c,v 1.8.4.3 2000-09-02 20:49:09 bird Exp $ * * d16strat.c - 16-bit strategy routine, device headers, device_helper (ptr) * and 16-bit IOClts. * * Copyright (c) 1999 knut st. osmundsen * * Project Odin Software License can be found in LICENSE.TXT * */ /******************************************************************************* * Defined Constants * *******************************************************************************/ #define INCL_DOSERRORS #define INCL_NOPMAPI #define NO_WIN32K_LIB_FUNCTIONS /******************************************************************************* * Header Files * *******************************************************************************/ #include #include #include #include #include #include /* Note that C-library function are only allowed during init! */ #include "devSegDf.h" #include "dev1632.h" #include "dev16.h" #include "win32k.h" /******************************************************************************* * Global Variables * *******************************************************************************/ DDHDR aDevHdrs[2] = /* This is the first piece data in the driver!!!!!!! */ { { (unsigned long)(void _far *)(&aDevHdrs[1]), /* NextHeader */ DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */ (unsigned short)(void _near *)strategyAsm0, /* StrategyEP */ 0, /* InterruptEP */ "elf$ ", /* DevName */ 0, /* SDevProtCS */ 0, /* SDevProtDS */ 0, /* SDevRealCS */ 0, /* SDevRealDS */ DEV_16MB | DEV_IOCTL2 /* SDevCaps */ }, { ~0UL, /* NextHeader */ DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */ (unsigned short)(void _near *)strategyAsm1, /* StrategyEP */ 0, /* InterruptEP */ "win32k$ ", /* DevName */ 0, /* SDevProtCS */ 0, /* SDevProtDS */ 0, /* SDevRealCS */ 0, /* SDevRealDS */ DEV_16MB | DEV_IOCTL2 /* SDevCaps */ } }; /******************************************************************************* * Internal Functions * *******************************************************************************/ USHORT NEAR dev0GenIOCtl(PRP_GENIOCTL pRp); USHORT NEAR dev1GenIOCtl(PRP_GENIOCTL pRp); /** * Strategy routine. * @returns Status word. * @param pRpH Pointer to request packed header. (Do not change the pointer!) * @parma usDev Device number. * @remark This function is called from the entrypoint in dev1st.asm */ USHORT NEAR strategy(PRPH pRpH, unsigned short usDev) { switch (pRpH->Cmd) { case CMDInit: /* INIT command */ if (fInitTime) { if (usDev == 0) return dev0Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH); else return dev1Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH); } break; case CMDGenIOCTL: /* Generic IOCTL */ if (usDev == 0) return dev0GenIOCtl((PRP_GENIOCTL)pRpH); else return dev1GenIOCtl((PRP_GENIOCTL)pRpH); case CMDOpen: /* device open */ case CMDClose: /* device close */ case CMDDeInstall: /* De-Install driver */ case CMDShutdown: return STATUS_DONE; } return STATUS_DONE | STATUS_ERR_UNKCMD; } extern char end; /** * Generic I/O Control - device 0. * This will only handle the request for Ring-0 initiation. * @returns Status word. * @param pRp Request packet. */ USHORT NEAR dev0GenIOCtl(PRP_GENIOCTL pRp) { USHORT rc; if (pRp->Category == D16_IOCTL_CAT) { switch (pRp->Function) { /* * This is the IOCtl which does the R0-initiation of the device driver. * Only available at init time... */ case D16_IOCTL_RING0INIT: if (fInitTime) { rc = R0Init16(pRp); return rc; } break; /* * This is the IOCtl collects info of the running kernel. * Only available at init time. * * Since this IOCtl is issued before R0-Init is done, we'll have to * init TKSSBase for both 16-bit and 32-bit code and be a bit carefull. */ case D16_IOCTL_GETKRNLINFO: if (fInitTime) { ULONG ulLin; if (fInitTime && TKSSBase16 == 0) initGetDosTableData(); if (DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), &ulLin) != NO_ERROR) return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; return CallGetKernelInfo32(ulLin); } break; /* * This is the IOCtl verifies the data in the ImportTab. * Only available at init time. * * Since this IOCtl is issued before R0-Init is done, we'll have to * init TKSSBase for both 16-bit and 32-bit code and be a bit carefull. */ case D16_IOCTL_VERIFYIMPORTTAB: if (fInitTime) { if (TKSSBase16 == 0) initGetDosTableData(); return CallVerifyImportTab32(); } break; } } else if (pRp->Category == IOCTL_W32K_K32 || pRp->Category == IOCTL_W32K_ELF) { RP32GENIOCTL rp32Init = {0}; rp32Init.rph.Len = pRp->rph.Len; rp32Init.rph.Unit = pRp->rph.Unit; rp32Init.rph.Cmd = pRp->rph.Cmd; rp32Init.rph.Status = pRp->rph.Status; rp32Init.rph.Flags = pRp->rph.Flags; rp32Init.rph.Link = (ULONG)pRp->rph.Link; rp32Init.Category = pRp->Category; rp32Init.Function = pRp->Function; rp32Init.sfn = pRp->sfn; rp32Init.DataLen = pRp->DataLen; rp32Init.ParmLen = pRp->ParmLen; if (DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), (PLIN)&rp32Init.DataPacket) != NO_ERROR) return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; if (DevHelp_VirtToLin(SELECTOROF(pRp->ParmPacket), OFFSETOF(pRp->ParmPacket), (PLIN)&rp32Init.ParmPacket) != NO_ERROR) return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; if (pRp->Category == IOCTL_W32K_ELF) rc = CallElfIOCtl(SSToDS_16a(&rp32Init)); else rc = CallWin32kIOCtl(SSToDS_16a(&rp32Init)); return rc; } return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; } /** * Generic I/O Control - device 0. * This will forward requests to 32-bit counterpart. * @returns Status word. * @param pRp Request packet. */ USHORT NEAR dev1GenIOCtl(PRP_GENIOCTL pRp) { if (pRp->Category == IOCTL_W32K_K32 || pRp->Category == IOCTL_W32K_ELF) { USHORT rc; RP32GENIOCTL rp32Init = {0}; rp32Init.rph.Len = pRp->rph.Len; rp32Init.rph.Unit = pRp->rph.Unit; rp32Init.rph.Cmd = pRp->rph.Cmd; rp32Init.rph.Status = pRp->rph.Status; rp32Init.rph.Flags = pRp->rph.Flags; rp32Init.rph.Link = (ULONG)pRp->rph.Link; rp32Init.Category = pRp->Category; rp32Init.Function = pRp->Function; rp32Init.sfn = pRp->sfn; rp32Init.DataLen = pRp->DataLen; rp32Init.ParmLen = pRp->ParmLen; if (DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), (PLIN)&rp32Init.DataPacket) != NO_ERROR) return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; if (DevHelp_VirtToLin(SELECTOROF(pRp->ParmPacket), OFFSETOF(pRp->ParmPacket), (PLIN)&rp32Init.ParmPacket) != NO_ERROR) return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; if (pRp->Category == IOCTL_W32K_ELF) rc = CallElfIOCtl(SSToDS_16a(&rp32Init)); else rc = CallWin32kIOCtl(SSToDS_16a(&rp32Init)); return rc; } return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER; }