ReactOS  0.4.14-dev-552-g2fad488
i386vid.c
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1 /*
2  * FreeLoader
3  * Copyright (C) 1998-2003 Brian Palmer <brianp@sginet.com>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with this program; if not, write to the Free Software Foundation, Inc.,
17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18  */
19 
20 #include <freeldr.h>
21 
22 #include <debug.h>
23 DBG_DEFAULT_CHANNEL(HWDETECT);
24 
25 #include <pshpack2.h>
26 typedef struct
27 {
28  UCHAR Signature[4]; // (ret) signature ("VESA")
29  // (call) VESA 2.0 request signature ("VBE2"), required to receive
30  // version 2.0 info
31  USHORT VesaVersion; // VESA version number (one-digit minor version -- 0102h = v1.2)
32  ULONG OemNamePtr; // pointer to OEM name
33  // "761295520" for ATI
34  ULONG Capabilities; // capabilities flags (see #00078)
35  ULONG SupportedModeListPtr; // pointer to list of supported VESA and OEM video modes
36  // (list of words terminated with FFFFh)
37  USHORT TotalVideoMemory; // total amount of video memory in 64K blocks
38 
39  // ---VBE v1.x ---
40  //UCHAR Reserved[236];
41 
42  // ---VBE v2.0 ---
43  USHORT OemSoftwareVersion; // OEM software version (BCD, high byte = major, low byte = minor)
44  ULONG VendorNamePtr; // pointer to vendor name
45  ULONG ProductNamePtr; // pointer to product name
46  ULONG ProductRevisionStringPtr; // pointer to product revision string
47  USHORT VBE_AF_Version; // (if capabilities bit 3 set) VBE/AF version (BCD)
48  // 0100h for v1.0P
49  ULONG AcceleratedModeListPtr; // (if capabilities bit 3 set) pointer to list of supported
50  // accelerated video modes (list of words terminated with FFFFh)
51  UCHAR Reserved[216]; // reserved for VBE implementation
52  UCHAR ScratchPad[256]; // OEM scratchpad (for OEM strings, etc.)
54 #include <poppack.h>
55 
56 // Bitfields for VESA capabilities:
57 //
58 // Bit(s) Description (Table 00078)
59 // 0 DAC can be switched into 8-bit mode
60 // 1 non-VGA controller
61 // 2 programmed DAC with blank bit (i.e. only during blanking interval)
62 // 3 (VBE v3.0) controller supports hardware stereoscopic signalling
63 // 3 controller supports VBE/AF v1.0P extensions
64 // 4 (VBE v3.0) if bit 3 set:
65 // =0 stereo signalling via external VESA stereo connector
66 // =1 stereo signalling via VESA EVC connector
67 // 4 (VBE/AF v1.0P) must call EnableDirectAccess to access framebuffer
68 // 5 (VBE/AF v1.0P) controller supports hardware mouse cursor
69 // 6 (VBE/AF v1.0P) controller supports hardware clipping
70 // 7 (VBE/AF v1.0P) controller supports transparent BitBLT
71 // 8-31 reserved (0)
72 
73 // Notes: The list of supported video modes is stored in the reserved
74 // portion of the SuperVGA information record by some implementations,
75 // and it may thus be necessary to either copy the mode list or use a
76 // different buffer for all subsequent VESA calls. Not all of the video
77 // modes in the list of mode numbers may be supported, e.g. if they require
78 // more memory than currently installed or are not supported by the
79 // attached monitor. Check any mode you intend to use through AX=4F01h first..
80 // The 1.1 VESA document specifies 242 reserved bytes at the end, so the
81 // buffer should be 262 bytes to ensure that it is not overrun; for v2.0,
82 // the buffer should be 512 bytes. The S3 specific video modes will most
83 // likely follow the FFFFh terminator at the end of the standard modes.
84 // A search must then be made to find them, FFFFh will also terminate this
85 // second list. In some cases, only a "stub" VBE may be present, supporting
86 // only AX=4F00h; this case may be assumed if the list of supported video modes
87 // is empty (consisting of a single word of FFFFh)
88 #if 0
89 static VOID BiosSetVideoFont8x16(VOID)
90 {
91  REGS Regs;
92 
93  // Int 10h AX=1114h
94  // VIDEO - TEXT-MODE CHARGEN - LOAD ROM 8x16 CHARACTER SET (VGA)
95  //
96  // AX = 1114h
97  // BL = block to load
98  // Return:
99  // Nothing
100  Regs.w.ax = 0x1114;
101  Regs.b.bl = 0;
102  Int386(0x10, &Regs, &Regs);
103 }
104 
105 static VOID VideoSetTextCursorPosition(ULONG X, ULONG Y)
106 {
107 }
108 
109 static ULONG VideoGetTextCursorPositionX(VOID)
110 {
111  REGS Regs;
112 
113  // Int 10h AH=03h
114  // VIDEO - GET CURSOR POSITION AND SIZE
115  //
116  // AH = 03h
117  // BH = page number
118  // 0-3 in modes 2&3
119  // 0-7 in modes 0&1
120  // 0 in graphics modes
121  // Return:
122  // AX = 0000h (Phoenix BIOS)
123  // CH = start scan line
124  // CL = end scan line
125  // DH = row (00h is top)
126  // DL = column (00h is left)
127  Regs.b.ah = 0x03;
128  Regs.b.bh = 0x00;
129  Int386(0x10, &Regs, &Regs);
130 
131  return Regs.b.dl;
132 }
133 
134 static ULONG VideoGetTextCursorPositionY(VOID)
135 {
136  REGS Regs;
137 
138  // Int 10h AH=03h
139  // VIDEO - GET CURSOR POSITION AND SIZE
140  //
141  // AH = 03h
142  // BH = page number
143  // 0-3 in modes 2&3
144  // 0-7 in modes 0&1
145  // 0 in graphics modes
146  // Return:
147  // AX = 0000h (Phoenix BIOS)
148  // CH = start scan line
149  // CL = end scan line
150  // DH = row (00h is top)
151  // DL = column (00h is left)
152  Regs.b.ah = 0x03;
153  Regs.b.bh = 0x00;
154  Int386(0x10, &Regs, &Regs);
155 
156  return Regs.b.dh;
157 }
158 #endif
159 
161 {
162  REGS Regs;
164  //USHORT* VideoModes;
165  //USHORT Index;
166 
167  TRACE("BiosIsVesaSupported()\n");
168 
169  RtlZeroMemory(SvgaInfo, sizeof(VESA_SVGA_INFO));
170 
171  // Make sure we receive version 2.0 info
172  SvgaInfo->Signature[0] = 'V';
173  SvgaInfo->Signature[1] = 'B';
174  SvgaInfo->Signature[2] = 'E';
175  SvgaInfo->Signature[3] = '2';
176 
177  // Int 10h AX=4F00h
178  // VESA SuperVGA BIOS (VBE) - GET SuperVGA INFORMATION
179  //
180  // AX = 4F00h
181  // ES:DI -> buffer for SuperVGA information (see #00077)
182  // Return:
183  // AL = 4Fh if function supported
184  // AH = status
185  // 00h successful
186  // ES:DI buffer filled
187  // 01h failed
188  // ---VBE v2.0---
189  // 02h function not supported by current hardware configuration
190  // 03h function invalid in current video mode
191  //
192  // Determine whether VESA BIOS extensions are present and the
193  // capabilities supported by the display adapter
194  //
195  // Installation check;VESA SuperVGA
196  Regs.w.ax = 0x4F00;
197  Regs.w.es = BIOSCALLBUFSEGMENT;
198  Regs.w.di = BIOSCALLBUFOFFSET;
199  Int386(0x10, &Regs, &Regs);
200 
201  TRACE("AL = 0x%x\n", Regs.b.al);
202  TRACE("AH = 0x%x\n", Regs.b.ah);
203 
204  if (Regs.w.ax != 0x004F)
205  {
206  WARN("VBE Get SuperVGA information function not supported (AL=0x%x) or failed (AH=0x%x)\n",
207  Regs.b.al, Regs.b.ah);
208  return 0x0000;
209  }
210 
211  TRACE("Supported.\n");
212  TRACE("SvgaInfo->Signature[4] = %c%c%c%c\n", SvgaInfo->Signature[0], SvgaInfo->Signature[1], SvgaInfo->Signature[2], SvgaInfo->Signature[3]);
213  TRACE("SvgaInfo->VesaVersion = v%d.%d\n", ((SvgaInfo->VesaVersion >> 8) & 0xFF), (SvgaInfo->VesaVersion & 0xFF));
214  TRACE("SvgaInfo->OemNamePtr = 0x%x\n", SvgaInfo->OemNamePtr);
215  TRACE("SvgaInfo->Capabilities = 0x%x\n", SvgaInfo->Capabilities);
216  TRACE("SvgaInfo->VideoMemory = %dK\n", SvgaInfo->TotalVideoMemory * 64);
217  TRACE("---VBE v2.0 ---\n");
218  TRACE("SvgaInfo->OemSoftwareVersion = v%d.%d\n", ((SvgaInfo->OemSoftwareVersion >> 8) & 0x0F) + (((SvgaInfo->OemSoftwareVersion >> 12) & 0x0F) * 10), (SvgaInfo->OemSoftwareVersion & 0x0F) + (((SvgaInfo->OemSoftwareVersion >> 4) & 0x0F) * 10));
219  TRACE("SvgaInfo->VendorNamePtr = 0x%x\n", SvgaInfo->VendorNamePtr);
220  TRACE("SvgaInfo->ProductNamePtr = 0x%x\n", SvgaInfo->ProductNamePtr);
221  TRACE("SvgaInfo->ProductRevisionStringPtr = 0x%x\n", SvgaInfo->ProductRevisionStringPtr);
222  TRACE("SvgaInfo->VBE/AF Version = 0x%x (BCD WORD)\n", SvgaInfo->VBE_AF_Version);
223 
224  if (SvgaInfo->Signature[0] != 'V' ||
225  SvgaInfo->Signature[1] != 'E' ||
226  SvgaInfo->Signature[2] != 'S' ||
227  SvgaInfo->Signature[3] != 'A')
228  {
229  ERR("Bad signature in VESA information (%c%c%c%c)\n",
230  SvgaInfo->Signature[0],
231  SvgaInfo->Signature[1],
232  SvgaInfo->Signature[2],
233  SvgaInfo->Signature[3]);
234  return 0x0000;
235  }
236 
237  return SvgaInfo->VesaVersion;
238 }
239 
240 
241 BOOLEAN
243 {
244  REGS Regs;
245 
246  TRACE("BiosIsVesaDdcSupported()\n");
247 
248  Regs.w.ax = 0x4F15;
249  Regs.b.bl = 0;
250  Regs.w.cx = 0;
251  Regs.w.es = 0;
252  Regs.w.di = 0;
253  Int386(0x10, &Regs, &Regs);
254 
255  TRACE("AL = 0x%x\n", Regs.b.al);
256  TRACE("AH = 0x%x\n", Regs.b.ah);
257 
258  TRACE("BL = 0x%x\n", Regs.b.bl);
259 
260  if (Regs.w.ax != 0x004F)
261  {
262  WARN("VBE/DDC Installation check function not supported (AL=0x%x) or failed (AH=0x%x)\n",
263  Regs.b.al, Regs.b.ah);
264  return FALSE;
265  }
266 
267  return (Regs.b.ah == 0);
268 }
269 
270 
271 BOOLEAN
273 {
274  REGS Regs;
275 
276  TRACE("BiosVesaReadEdid()\n");
277 
279 
280  Regs.w.ax = 0x4F15;
281  Regs.b.bl = 1;
282  Regs.w.cx = 0;
283  Regs.w.dx = 0;
284  Regs.w.es = BIOSCALLBUFSEGMENT;
285  Regs.w.di = BIOSCALLBUFOFFSET;
286  Int386(0x10, &Regs, &Regs);
287 
288  TRACE("AL = 0x%x\n", Regs.b.al);
289  TRACE("AH = 0x%x\n", Regs.b.ah);
290 
291  if (Regs.w.ax != 0x004F)
292  {
293  WARN("VBE/DDC Read EDID function not supported (AL=0x%x) or failed (AH=0x%x)\n",
294  Regs.b.al, Regs.b.ah);
295  return FALSE;
296  }
297 
298  return (Regs.b.ah == 0);
299 }
300 
301 /* EOF */
unsigned short dx
Definition: pcbios.h:102
USHORT VBE_AF_Version
Definition: i386vid.c:47
#define Y(I)
#define BIOSCALLBUFFER
Definition: x86common.h:12
#define WARN(fmt,...)
Definition: debug.h:111
ULONG ProductRevisionStringPtr
Definition: i386vid.c:46
unsigned short cx
Definition: pcbios.h:101
unsigned short es
Definition: pcbios.h:109
unsigned char ah
Definition: pcbios.h:120
ULONG AcceleratedModeListPtr
Definition: i386vid.c:49
unsigned char dh
Definition: pcbios.h:129
struct VESA_SVGA_INFO * PVESA_SVGA_INFO
int __cdecl Int386(int ivec, REGS *in, REGS *out)
ULONG OemNamePtr
Definition: i386vid.c:32
unsigned char dl
Definition: pcbios.h:128
#define BIOSCALLBUFSEGMENT
Definition: x86common.h:21
UCHAR Signature[4]
Definition: i386vid.c:28
ULONG Capabilities
Definition: i386vid.c:34
ULONG SupportedModeListPtr
Definition: i386vid.c:35
unsigned char BOOLEAN
_Reserved_ PVOID Reserved
Definition: winddi.h:3974
BOOLEAN BiosIsVesaDdcSupported(VOID)
Definition: i386vid.c:242
USHORT BiosIsVesaSupported(VOID)
Definition: i386vid.c:160
#define TRACE(s)
Definition: solgame.cpp:4
ULONG ProductNamePtr
Definition: i386vid.c:45
unsigned char bl
Definition: pcbios.h:122
#define BIOSCALLBUFOFFSET
Definition: x86common.h:22
unsigned char UCHAR
Definition: xmlstorage.h:181
BOOLEAN BiosVesaReadEdid(VOID)
Definition: i386vid.c:272
BYTEREGS b
Definition: pcbios.h:151
unsigned char al
Definition: pcbios.h:119
DBG_DEFAULT_CHANNEL(HWDETECT)
#define ERR(fmt,...)
Definition: debug.h:109
unsigned char bh
Definition: pcbios.h:123
unsigned short USHORT
Definition: pedump.c:61
unsigned short ax
Definition: pcbios.h:99
USHORT VesaVersion
Definition: i386vid.c:31
unsigned int ULONG
Definition: retypes.h:1
Definition: pcbios.h:146
USHORT OemSoftwareVersion
Definition: i386vid.c:43
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:261
USHORT TotalVideoMemory
Definition: i386vid.c:37
static const WCHAR Signature[]
Definition: parser.c:141
ULONG VendorNamePtr
Definition: i386vid.c:44
unsigned short di
Definition: pcbios.h:105
WORDREGS w
Definition: pcbios.h:150