1/*
2 * Copyright © 2002 David Dawes
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 *
22 * Except as contained in this notice, the name of the author(s) shall
23 * not be used in advertising or otherwise to promote the sale, use or other
24 * dealings in this Software without prior written authorization from
25 * the author(s).
26 *
27 * Authors: David Dawes <dawes@xfree86.org>
28 *
29 */
30
31#ifndef _VBE_MODES_H
32
33/*
34 * This is intended to be stored in the DisplayModeRec's private area.
35 * It includes all the information necessary to VBE information.
36 */
37typedef struct _VbeModeInfoData {
38    int mode;
39    VbeModeInfoBlock *data;
40    VbeCRTCInfoBlock *block;
41} VbeModeInfoData;
42
43#define V_DEPTH_1	0x001
44#define V_DEPTH_4	0x002
45#define V_DEPTH_8	0x004
46#define V_DEPTH_15	0x008
47#define V_DEPTH_16	0x010
48#define V_DEPTH_24_24	0x020
49#define V_DEPTH_24_32	0x040
50#define V_DEPTH_24	(V_DEPTH_24_24 | V_DEPTH_24_32)
51#define V_DEPTH_30	0x080
52#define V_DEPTH_32	0x100
53
54#define VBE_MODE_SUPPORTED(m)	(((m)->ModeAttributes & 0x01) != 0)
55#define VBE_MODE_COLOR(m)	(((m)->ModeAttributes & 0x08) != 0)
56#define VBE_MODE_GRAPHICS(m)	(((m)->ModeAttributes & 0x10) != 0)
57#define VBE_MODE_VGA(m)		(((m)->ModeAttributes & 0x40) == 0)
58#define VBE_MODE_LINEAR(m)	(((m)->ModeAttributes & 0x80) != 0 && \
59				 ((m)->PhysBasePtr != 0))
60
61#define VBE_MODE_USABLE(m, f)	(VBE_MODE_SUPPORTED(m) || \
62				 (f & V_MODETYPE_BAD)) && \
63				VBE_MODE_GRAPHICS(m) && \
64				(VBE_MODE_VGA(m) || VBE_MODE_LINEAR(m))
65
66#define V_MODETYPE_VBE		0x01
67#define V_MODETYPE_VGA		0x02
68#define V_MODETYPE_BAD		0x04
69
70extern _X_EXPORT int VBEFindSupportedDepths(vbeInfoPtr pVbe, VbeInfoBlock *vbe,
71				  int *flags24, int modeTypes);
72extern _X_EXPORT DisplayModePtr VBEGetModePool(ScrnInfoPtr pScrn, vbeInfoPtr pVbe,
73					VbeInfoBlock *vbe, int modeTypes);
74extern _X_EXPORT void VBESetModeNames(DisplayModePtr pMode);
75extern _X_EXPORT void VBESetModeParameters(ScrnInfoPtr pScrn, vbeInfoPtr pVbe);
76
77
78/*
79 * Note: These are alternatives to the standard helpers.  They should
80 * usually just wrap the standard helpers.
81 */
82extern _X_EXPORT int VBEValidateModes(ScrnInfoPtr scrp, DisplayModePtr availModes,
83			    const char **modeNames, ClockRangePtr clockRanges,
84			    int *linePitches, int minPitch, int maxPitch,
85			    int pitchInc, int minHeight, int maxHeight,
86			    int virtualX, int virtualY, int apertureSize,
87			    LookupModeFlags strategy);
88extern _X_EXPORT void VBEPrintModes(ScrnInfoPtr scrp);
89
90#endif /* VBE_MODES_H */
91