| 1 | /* $Id: d16strat.c,v 1.1 1999-09-06 02:19:55 bird Exp $
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| 2 | *
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| 3 | * d16strat.c - 16-bit strategy routine, device headers, device_helper (ptr)
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| 4 | * and 16-bit IOClts.
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| 5 | *
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| 6 | * Copyright (c) 1999 knut st. osmundsen
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| 7 | *
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| 8 | */
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| 9 |
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| 10 | /*******************************************************************************
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| 11 | * Defined Constants *
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| 12 | *******************************************************************************/
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| 13 | #define INCL_DOSERRORS
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| 14 | #define INCL_NOPMAPI
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| 15 |
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| 16 | /*******************************************************************************
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| 17 | * Header Files *
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| 18 | *******************************************************************************/
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| 19 | #include <os2.h>
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| 20 | #include <devhdr.h>
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| 21 | #include <devcmd.h>
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| 22 | #include <strat2.h>
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| 23 | #include <reqpkt.h>
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| 24 | #include <dhcalls.h>
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| 25 |
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| 26 | /* Note that C-library function are only allowed during init! */
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| 27 |
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| 28 | #include "dev1632.h"
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| 29 | #include "dev16.h"
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Global Variables *
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| 34 | *******************************************************************************/
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| 35 | DDHDR aDevHdrs[2] = /* This is the first piece data in the driver!!!!!!! */
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| 36 | {
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| 37 | {
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| 38 | (unsigned long)(void _far *)(&aDevHdrs[1]), /* NextHeader */
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| 39 | DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */
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| 40 | (unsigned short)(void _near *)strategyAsm0, /* StrategyEP */
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| 41 | 0, /* InterruptEP */
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| 42 | "win32i$ ", /* Later: elf ?*/ /* DevName */
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| 43 | 0, /* SDevProtCS */
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| 44 | 0, /* SDevProtDS */
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| 45 | 0, /* SDevRealCS */
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| 46 | 0, /* SDevRealDS */
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| 47 | DEV_16MB | DEV_IOCTL2 /* SDevCaps */
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| 48 | },
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| 49 | {
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| 50 | ~0UL, /* NextHeader */
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| 51 | DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */
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| 52 | (unsigned short)(void _near *)strategyAsm1, /* StrategyEP */
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| 53 | 0, /* InterruptEP */
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| 54 | "win32k$ ", /* DevName */
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| 55 | 0, /* SDevProtCS */
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| 56 | 0, /* SDevProtDS */
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| 57 | 0, /* SDevRealCS */
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| 58 | 0, /* SDevRealDS */
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| 59 | DEV_16MB | DEV_IOCTL2 /* SDevCaps */
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| 60 | }
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| 61 | };
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| 62 |
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| 63 | /* Note: All global variables must be initialized! *
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| 64 | * Uninitialized variables ends up in DATA32. */
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| 65 | PFN Device_Help = NULL;
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| 66 | ULONG TKSSBase16 = 0;
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| 67 | USHORT R0FlatCS16 = 0;
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| 68 | USHORT R0FlatDS16 = 0;
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| 69 |
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| 70 |
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| 71 | /*******************************************************************************
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| 72 | * Internal Functions *
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| 73 | *******************************************************************************/
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| 74 | USHORT NEAR dev0GenIOCtl(PRP_GENIOCTL pRp);
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| 75 | USHORT NEAR dev1GenIOCtl(PRP_GENIOCTL pRp);
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| 76 |
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| 77 |
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| 78 | /**
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| 79 | * Strategy routine.
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| 80 | * @returns Status word.
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| 81 | * @param pRpH Pointer to request packed header.
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| 82 | * @parma usDev Device number.
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| 83 | * @remark This function is called from the entrypoint in dev1st.asm
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| 84 | */
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| 85 | USHORT NEAR strategy(PRPH pRpH, unsigned short usDev)
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| 86 | {
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| 87 | switch (pRpH->Cmd)
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| 88 | {
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| 89 | case CMDInit: /* INIT command */
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| 90 | if (usDev == 0)
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| 91 | return dev0Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH);
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| 92 | else
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| 93 | return dev1Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH);
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| 94 |
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| 95 | case CMDGenIOCTL: /* Generic IOCTL */
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| 96 | if (usDev == 0)
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| 97 | return dev0GenIOCtl((PRP_GENIOCTL)pRpH);
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| 98 | else
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| 99 | return dev1GenIOCtl((PRP_GENIOCTL)pRpH);
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| 100 |
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| 101 | case CMDOpen: /* device open */
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| 102 | case CMDClose: /* device close */
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| 103 | case CMDDeInstall: /* De-Install driver */
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| 104 | case CMDShutdown:
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| 105 | return STATUS_DONE;
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| 106 |
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| 107 | default:
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| 108 | return STATUS_DONE | STATUS_ERR_UNKCMD;
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | extern char end;
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| 113 |
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| 114 |
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| 115 | /**
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| 116 | * Generic I/O Control - device 0.
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| 117 | * This will only handle the request for Ring-0 initiation.
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| 118 | * @returns Status word.
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| 119 | * @param pRp Request packet.
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| 120 | */
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| 121 | USHORT dev0GenIOCtl(PRP_GENIOCTL pRp)
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| 122 | {
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| 123 | /* _asm int 3;*/
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| 124 | if (pRp->Category == D16_IOCTL_CAT && pRp->Function == D16_IOCTL_RING0INIT)
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| 125 | return R0Init16(pRp);
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| 126 |
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| 127 | return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER;
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| 128 | }
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| 129 |
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| 130 |
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| 131 | /**
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| 132 | * Generic I/O Control - device 0.
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| 133 | * This will forward requests to 32-bit counterpart.
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| 134 | * @returns Status word.
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| 135 | * @param pRp Request packet.
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| 136 | */
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| 137 | USHORT dev1GenIOCtl(PRP_GENIOCTL pRp)
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| 138 | {
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| 139 | pRp = pRp;
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| 140 | return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER;
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| 141 | }
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| 142 |
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