| 1 | /* $Id: d16init.c,v 1.12 2001-07-31 21:36:37 bird Exp $
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| 2 | *
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| 3 | * d16init - init routines for both drivers.
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| 4 | *
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| 5 | * IMPORTANT! Code and data defined here will be discarded after init is
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| 6 | * completed. CodeEnd and DataEnd should not be set here.?
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| 7 | *
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| 8 | * Copyright (c) 1999-2000 knut st. osmundsen (knut.stange.osmundsen@mynd.no)
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| 9 | *
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| 10 | * Project Odin Software License can be found in LICENSE.TXT
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| 11 | *
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| 12 | */
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| 13 |
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| 14 | /*******************************************************************************
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| 15 | * Defined Constants *
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| 16 | *******************************************************************************/
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| 17 | #define INCL_16
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| 18 | #define INCL_DOSFILEMGR
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| 19 | #define INCL_DOSDEVICES
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| 20 | #define INCL_DOSMISC
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| 21 | #define INCL_DOSERRORS
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| 22 | #define INCL_NOPMAPI
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| 23 |
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| 24 |
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| 25 | /*******************************************************************************
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| 26 | * Header Files *
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| 27 | *******************************************************************************/
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| 28 | #include <os2.h>
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| 29 | #include <devhdr.h>
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| 30 | #include <devcmd.h>
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| 31 | #include <strat2.h>
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| 32 | #include <reqpkt.h>
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| 33 | #include <dhcalls.h>
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| 34 |
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| 35 | #include <string.h>
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| 36 | #include <memory.h>
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| 37 |
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| 38 | #include "devSegDf.h"
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| 39 | #undef DATA16_INIT
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| 40 | #define DATA16_INIT
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| 41 | #undef CODE16_INIT
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| 42 | #define CODE16_INIT
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| 43 | #include "probkrnl.h"
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| 44 | #include "dev1632.h"
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| 45 | #include "dev16.h"
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| 46 | #include "vprntf16.h"
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| 47 | #include "log.h"
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| 48 | #include "options.h"
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| 49 | #include "errors.h"
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| 50 |
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| 51 |
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| 52 | /**
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| 53 | * init function - device 0.
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| 54 | * Does nothing else than setting the device_help variable and
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| 55 | * fill the request packet.
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| 56 | * @returns Status word.
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| 57 | * @param pRpIn Pointer to input request packet. Actually the same memory as pRpOut but another struct.
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| 58 | * @param pRpOut Pointer to output request packet. Actually the same memory as pRpIn but another struct.
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| 59 | * @remark pRpIn and pRpOut points to the same memory.
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| 60 | */
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| 61 | USHORT NEAR dev0Init(PRPINITIN pRpIn, PRPINITOUT pRpOut)
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| 62 | {
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| 63 | APIRET rc;
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| 64 | Device_Help = pRpIn->DevHlpEP;
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| 65 |
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| 66 | /*
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| 67 | * Does this work at Ring-3 (inittime)?
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| 68 | * If this work we could be saved from throuble!
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| 69 | */
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| 70 | rc = initGetDosTableData();
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| 71 | if (rc != NO_ERROR)
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| 72 | printf16("win32k - elf$: initGetDosTableData failed with rc=%d\n", rc);
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| 73 |
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| 74 | pRpOut->BPBArray = NULL;
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| 75 | pRpOut->CodeEnd = (USHORT)&CODE16_INITSTART;
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| 76 | pRpOut->DataEnd = (USHORT)&DATA16_INITSTART;
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| 77 | pRpOut->Unit = 0;
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| 78 | pRpOut->rph.Status = STATUS_DONE;
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| 79 | return STATUS_DONE;
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| 80 | }
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| 81 |
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| 82 |
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| 83 | /**
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| 84 | * init function - device 1.
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| 85 | * We will send an IOCtl request to the elf$ (device 0) which will
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| 86 | * perform the Ring-0 initiation of the driver.
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| 87 | * @returns Status word.
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| 88 | * @param pRpIn Pointer to input request packet. Actually the same memory as pRpOut but another struct.
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| 89 | * @param pRpOut Pointer to output request packet. Actually the same memory as pRpIn but another struct.
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| 90 | * @remark pRpIn and pRpOut points to the same memory.
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| 91 | */
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| 92 | USHORT NEAR dev1Init(PRPINITIN pRpIn, PRPINITOUT pRpOut)
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| 93 | {
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| 94 | APIRET rc;
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| 95 | D16R0INITPARAM param;
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| 96 | D16R0INITDATA data = {0};
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| 97 | HFILE hDev0 = 0;
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| 98 | USHORT usAction = 0;
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| 99 | NPSZ npszErrMsg = NULL;
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| 100 | const char * npszErrMsg2 = NULL;
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| 101 |
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| 102 | /*
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| 103 | * Probe kernel data.
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| 104 | */
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| 105 | rc = ProbeKernel(pRpIn);
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| 106 | if (rc == NO_ERROR)
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| 107 | {
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| 108 | /*
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| 109 | * Open and send a Ring-0 init packet to elf$.
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| 110 | * If this succeeds win32k$ init succeeds.
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| 111 | */
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| 112 | rc = DosOpen("\\dev\\elf$", &hDev0, &usAction, 0UL, FILE_NORMAL,
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| 113 | OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS,
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| 114 | OPEN_SHARE_DENYNONE | OPEN_ACCESS_READONLY,
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| 115 | 0UL);
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| 116 | if (rc == NO_ERROR)
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| 117 | {
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| 118 | param.pRpInitIn = pRpIn;
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| 119 | rc = DosDevIOCtl(&data, ¶m, D16_IOCTL_RING0INIT, D16_IOCTL_CAT, hDev0);
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| 120 | if (rc == NO_ERROR)
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| 121 | {
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| 122 | if (data.usRcInit32 == NO_ERROR)
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| 123 | {
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| 124 | if (!options.fQuiet)
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| 125 | printf16("Win32k.sys successfully initiated!\n");
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| 126 | pRpOut->Status = pRpOut->rph.Status = STATUS_DONE;
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| 127 | }
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| 128 | else
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| 129 | {
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| 130 | /* set correct error message and rc */
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| 131 | rc = data.usRcInit32;
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| 132 | npszErrMsg = "Ring-0 initiation failed. rc=%x\n";
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| 133 | if (rc >= ERROR_D32_FIRST && rc <= ERROR_D32_LAST)
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| 134 | npszErrMsg2 =
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| 135 | GetErrorMsg(
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| 136 | data.usRcInit32
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| 137 | + ERROR_PROB_SYM_D32_FIRST
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| 138 | - ERROR_D32_FIRST
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| 139 | );
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| 140 | }
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| 141 | }
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| 142 | else
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| 143 | npszErrMsg = "Ring-0 init: DosDevIOCtl failed. rc=%d\n";
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| 144 | DosClose(hDev0);
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| 145 | }
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| 146 | else
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| 147 | npszErrMsg = "Ring-0 init: DosOpen failed. rc=%d\n";
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| 148 | }
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| 149 | else
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| 150 | npszErrMsg = ""; /* ProbeKrnl do its own complaining, but we need something here to indicate failure. */
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| 151 |
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| 152 | /*
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| 153 | * Fill return data.
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| 154 | */
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| 155 | pRpOut->CodeEnd = (USHORT)&CODE16_INITSTART;
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| 156 | pRpOut->DataEnd = (USHORT)&DATA16_INITSTART;
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| 157 | pRpOut->BPBArray= NULL;
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| 158 | pRpOut->Unit = 0;
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| 159 |
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| 160 | /*
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| 161 | * Any errors?, if so complain!
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| 162 | */
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| 163 | if (npszErrMsg)
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| 164 | {
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| 165 | printf16(npszErrMsg, rc);
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| 166 | if (npszErrMsg2)
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| 167 | printf16("%s\n", npszErrMsg2);
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| 168 | pRpOut->Status = pRpOut->rph.Status = STATUS_DONE | STERR | ERROR_I24_GEN_FAILURE;
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| 169 | }
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| 170 | printf16("\n");
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| 171 |
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| 172 | /* Init is completed. */
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| 173 | fInitTime = FALSE;
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| 174 |
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| 175 | /* successful return */
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| 176 | return pRpOut->rph.Status;
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| 177 | }
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| 178 |
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| 179 |
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| 180 |
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| 181 | /**
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| 182 | * R0 16-bit initiation.
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| 183 | * This gets TKSSBase, thunks parameters and calls R0 32-bit initiation function.
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| 184 | * @returns Status word. We don't fail on R0Init32 but forwards the result
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| 185 | * using the usRcInit32.
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| 186 | * @param pRp Generic IO Control request packet.
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| 187 | */
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| 188 | USHORT NEAR R0Init16(PRP_GENIOCTL pRp)
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| 189 | {
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| 190 | USHORT usRc = STATUS_DONE;
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| 191 | APIRET rc;
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| 192 |
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| 193 | /* First we're to get the DosTable2 stuff. */
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| 194 | rc = initGetDosTableData();
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| 195 | if (rc == NO_ERROR)
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| 196 | {
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| 197 | ULONG cPages;
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| 198 | char hLockParm[12] = {0};
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| 199 | ULONG ulLinParm;
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| 200 | char hLockData[12] = {0};
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| 201 | ULONG ulLinData;
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| 202 |
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| 203 | /*
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| 204 | * Thunk the request packet and lock userdata.
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| 205 | */
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| 206 | if (!DevHelp_VirtToLin(SELECTOROF(pRp->ParmPacket), OFFSETOF(pRp->ParmPacket), &ulLinParm)
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| 207 | &&
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| 208 | !DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), &ulLinData)
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| 209 | )
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| 210 | {
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| 211 | if (!(rc = DevHelp_VMLock(VMDHL_LONG | VMDHL_WRITE,
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| 212 | ulLinParm, sizeof(D16R0INITPARAM),
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| 213 | (LIN)~0UL, SSToDS_16(&hLockParm[0]), &cPages))
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| 214 | &&
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| 215 | !DevHelp_VMLock(VMDHL_LONG | VMDHL_WRITE,
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| 216 | ulLinData, sizeof(D16R0INITDATA),
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| 217 | (LIN)~0UL, SSToDS_16(&hLockData[0]), &cPages)
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| 218 | )
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| 219 | {
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| 220 | /*
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| 221 | * -data and param is locked (do we need to lock the request packet too ?).-
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| 222 | * Create new 32-bit init packet - Parameter pointer is thunked.
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| 223 | */
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| 224 | RP32INIT rp32init;
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| 225 |
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| 226 | _fmemcpy(&rp32init, ((PD16R0INITPARAM)pRp->ParmPacket)->pRpInitIn, sizeof(RPINITIN));
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| 227 | if (((PD16R0INITPARAM)pRp->ParmPacket)->pRpInitIn->InitArgs == NULL ||
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| 228 | !DevHelp_VirtToLin(SELECTOROF(rp32init.InitArgs), OFFSETOF(rp32init.InitArgs), (PLIN)&rp32init.InitArgs)
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| 229 | )
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| 230 | { /* call 32-bit init routine and set 32 bit rc. */
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| 231 | usRc = CallR0Init32(SSToDS_16(&rp32init));
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| 232 | ((PD16R0INITDATA)pRp->DataPacket)->usRcInit32 = usRc;
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| 233 |
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| 234 | /* set status to done (success). (R0Init32 RC is return as usRcInit32.) */
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| 235 | usRc = STATUS_DONE;
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| 236 | }
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| 237 | else
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| 238 | usRc |= STERR | ERROR_I24_INVALID_PARAMETER;
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| 239 |
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| 240 |
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| 241 | /*
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| 242 | * finished - unlock data and parm;
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| 243 | */
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| 244 | DevHelp_VMUnLock((LIN)SSToDS_16(&hLockParm[0]));
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| 245 | DevHelp_VMUnLock((LIN)SSToDS_16(&hLockData[0]));
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| 246 | }
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| 247 | else
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| 248 | usRc |= STERR | ERROR_I24_INVALID_PARAMETER;
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| 249 | }
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| 250 | else
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| 251 | usRc |= STERR | ERROR_I24_INVALID_PARAMETER;
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| 252 | }
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| 253 | else
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| 254 | usRc |= STERR | ERROR_I24_GEN_FAILURE;
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| 255 |
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| 256 | return usRc;
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| 257 | }
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| 258 |
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| 259 |
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| 260 |
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| 261 | /**
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| 262 | * Gets the data we need from the DosTables.
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| 263 | * This data is TKSSBase16, R0FlatCS16 and R0FlatDS16.
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| 264 | * @returns Same as DevHelp_GetDosVar.
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| 265 | * @status completely implemented.
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| 266 | * @author knut st. osmundsen (knut.stange.osmundsen@mynd.no)
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| 267 | * @remark If you are not sure if TKSSBase16 is set or not, call this.
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| 268 | * After R0Init16 is called TKSSBase16 _is_ set.
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| 269 | * IMPORTANT! This function must _not_ be called after the initiation of the second device driver!!!
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| 270 | * (Since this is init code not present after init...)
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| 271 | */
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| 272 | USHORT NEAR initGetDosTableData(void)
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| 273 | {
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| 274 | APIRET rc;
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| 275 | PDOSTABLE pDT;
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| 276 | PDOSTABLE2 pDT2;
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| 277 |
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| 278 | if (TKSSBase16 != 0)
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| 279 | return NO_ERROR;
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| 280 | /*
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| 281 | _asm {
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| 282 | int 3;
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| 283 | }
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| 284 | */
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| 285 |
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| 286 | /* First we're to get the DosTable2 stuff. */
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| 287 | rc = DevHelp_GetDOSVar(9, 0, &pDT);
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| 288 | if (rc == NO_ERROR)
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| 289 | {
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| 290 | pDT2 = (PDOSTABLE2)((char FAR *)pDT + pDT->cul*4 + 1);
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| 291 | TKSSBase16 = (ULONG)pDT2->pTKSSBase;
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| 292 | R0FlatCS16 = (USHORT)pDT2->R0FlatCS;
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| 293 | R0FlatDS16 = (USHORT)pDT2->R0FlatDS;
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| 294 | }
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| 295 | return rc;
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| 296 | }
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| 297 |
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