source: trunk/src/win32k/dev16/d16strat.c@ 2017

Last change on this file since 2017 was 1678, checked in by bird, 26 years ago

Some bugsfixes - Yield is disabled.
Added parameters.
Correcte moduleheaders.
Introduced a new base class for virtual lx modules + some elf sketches.
File size: 5.8 KB
Line 
1/* $Id: d16strat.c,v 1.3 1999-11-10 01:45:30 bird Exp $
2 *
3 * d16strat.c - 16-bit strategy routine, device headers, device_helper (ptr)
4 * and 16-bit IOClts.
5 *
6 * Copyright (c) 1999 knut st. osmundsen
7 *
8 * Project Odin Software License can be found in LICENSE.TXT
9 *
10 */
11
12/*******************************************************************************
13* Defined Constants *
14*******************************************************************************/
15#define INCL_DOSERRORS
16#define INCL_NOPMAPI
17
18/*******************************************************************************
19* Header Files *
20*******************************************************************************/
21#include <os2.h>
22#include <devhdr.h>
23#include <devcmd.h>
24#include <strat2.h>
25#include <reqpkt.h>
26#include <dhcalls.h>
27
28/* Note that C-library function are only allowed during init! */
29
30#include "dev1632.h"
31#include "dev16.h"
32
33
34/*******************************************************************************
35* Global Variables *
36*******************************************************************************/
37DDHDR aDevHdrs[2] = /* This is the first piece data in the driver!!!!!!! */
38{
39 {
40 (unsigned long)(void _far *)(&aDevHdrs[1]), /* NextHeader */
41 DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */
42 (unsigned short)(void _near *)strategyAsm0, /* StrategyEP */
43 0, /* InterruptEP */
44 "elf$ ", /* DevName */
45 0, /* SDevProtCS */
46 0, /* SDevProtDS */
47 0, /* SDevRealCS */
48 0, /* SDevRealDS */
49 DEV_16MB | DEV_IOCTL2 /* SDevCaps */
50 },
51 {
52 ~0UL, /* NextHeader */
53 DEVLEV_3 | DEV_30 | DEV_CHAR_DEV, /* SDevAtt */
54 (unsigned short)(void _near *)strategyAsm1, /* StrategyEP */
55 0, /* InterruptEP */
56 "win32k$ ", /* DevName */
57 0, /* SDevProtCS */
58 0, /* SDevProtDS */
59 0, /* SDevRealCS */
60 0, /* SDevRealDS */
61 DEV_16MB | DEV_IOCTL2 /* SDevCaps */
62 }
63};
64
65/* Note: All global variables must be initialized! *
66 * Uninitialized variables ends up in DATA32. */
67PFN Device_Help = NULL;
68ULONG TKSSBase16 = 0;
69USHORT R0FlatCS16 = 0;
70USHORT R0FlatDS16 = 0;
71BOOL fInitTime = TRUE;
72
73
74/*******************************************************************************
75* Internal Functions *
76*******************************************************************************/
77USHORT NEAR dev0GenIOCtl(PRP_GENIOCTL pRp);
78USHORT NEAR dev1GenIOCtl(PRP_GENIOCTL pRp);
79
80
81/**
82 * Strategy routine.
83 * @returns Status word.
84 * @param pRpH Pointer to request packed header. (Do not change the pointer!)
85 * @parma usDev Device number.
86 * @remark This function is called from the entrypoint in dev1st.asm
87 */
88USHORT NEAR strategy(PRPH pRpH, unsigned short usDev)
89{
90
91 switch (pRpH->Cmd)
92 {
93 case CMDInit: /* INIT command */
94 if (fInitTime)
95 {
96 if (usDev == 0)
97 return dev0Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH);
98 else
99 return dev1Init((PRPINITIN)pRpH, (PRPINITOUT)pRpH);
100 }
101 break;
102
103 case CMDGenIOCTL: /* Generic IOCTL */
104 if (usDev == 0)
105 return dev0GenIOCtl((PRP_GENIOCTL)pRpH);
106 else
107 return dev1GenIOCtl((PRP_GENIOCTL)pRpH);
108
109 case CMDOpen: /* device open */
110 case CMDClose: /* device close */
111 case CMDDeInstall: /* De-Install driver */
112 case CMDShutdown:
113 return STATUS_DONE;
114 }
115
116 return STATUS_DONE | STATUS_ERR_UNKCMD;
117}
118
119extern char end;
120
121
122/**
123 * Generic I/O Control - device 0.
124 * This will only handle the request for Ring-0 initiation.
125 * @returns Status word.
126 * @param pRp Request packet.
127 */
128USHORT dev0GenIOCtl(PRP_GENIOCTL pRp)
129{
130 USHORT rc;
131 if (pRp->Category == D16_IOCTL_CAT)
132 {
133 switch (pRp->Function)
134 {
135 case D16_IOCTL_RING0INIT:
136 if (fInitTime)
137 {
138 rc = R0Init16(pRp);
139 fInitTime = FALSE;
140 return rc;
141 }
142 break;
143
144 case D16_IOCTL_GETKRNLOTES:
145 {
146 ULONG ulLin;
147 if (DevHelp_VirtToLin(SELECTOROF(pRp->DataPacket), OFFSETOF(pRp->DataPacket), &ulLin) != NO_ERROR)
148 return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER;
149 return CallGetOTEs32(ulLin);
150 }
151
152 case D16_IOCTL_VERIFYPROCTAB:
153 if (fInitTime)
154 return CallVerifyProcTab32();
155 break;
156 }
157 }
158
159 return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER;
160}
161
162
163/**
164 * Generic I/O Control - device 0.
165 * This will forward requests to 32-bit counterpart.
166 * @returns Status word.
167 * @param pRp Request packet.
168 */
169USHORT dev1GenIOCtl(PRP_GENIOCTL pRp)
170{
171 pRp = pRp;
172 return STATUS_DONE | STERR | ERROR_I24_INVALID_PARAMETER;
173}
174
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