1/****************************************************************************
2*
3*                   VBE 2.0 Linear Framebuffer Profiler
4*                    By Kendall Bennett and Brian Hook
5*
6* Filename:     LFBPROF.H
7* Language:     ANSI C
8* Environment:  Watcom C/C++ 10.0a with DOS4GW
9*
10* Description:  Header file for the LFBPROF.C progam.
11*
12****************************************************************************/
13
14#ifndef __LFBPROF_H
15#define __LFBPROF_H
16
17/*---------------------- Macros and type definitions ----------------------*/
18
19#pragma pack(1)
20
21/* SuperVGA information block */
22
23typedef struct {
24    char    VESASignature[4];       /* 'VESA' 4 byte signature          */
25    short   VESAVersion;            /* VBE version number               */
26    long    OemStringPtr;           /* Pointer to OEM string            */
27    long    Capabilities;           /* Capabilities of video card       */
28    long    VideoModePtr;           /* Pointer to supported modes       */
29    short   TotalMemory;            /* Number of 64kb memory blocks     */
30
31    /* VBE 2.0 extensions */
32
33    short   OemSoftwareRev;         /* OEM Software revision number     */
34    long    OemVendorNamePtr;       /* Pointer to Vendor Name string    */
35    long    OemProductNamePtr;      /* Pointer to Product Name string   */
36    long    OemProductRevPtr;       /* Pointer to Product Revision str  */
37    char    reserved[222];          /* Pad to 256 byte block size       */
38    char    OemDATA[256];           /* Scratch pad for OEM data         */
39    } VBE_vgaInfo;
40
41/* SuperVGA mode information block */
42
43typedef struct {
44    short   ModeAttributes;         /* Mode attributes                  */
45    char    WinAAttributes;         /* Window A attributes              */
46    char    WinBAttributes;         /* Window B attributes              */
47    short   WinGranularity;         /* Window granularity in k          */
48    short   WinSize;                /* Window size in k                 */
49    short   WinASegment;            /* Window A segment                 */
50    short   WinBSegment;            /* Window B segment                 */
51    long    WinFuncPtr;             /* Pointer to window function       */
52    short   BytesPerScanLine;       /* Bytes per scanline               */
53    short   XResolution;            /* Horizontal resolution            */
54    short   YResolution;            /* Vertical resolution              */
55    char    XCharSize;              /* Character cell width             */
56    char    YCharSize;              /* Character cell height            */
57    char    NumberOfPlanes;         /* Number of memory planes          */
58    char    BitsPerPixel;           /* Bits per pixel                   */
59    char    NumberOfBanks;          /* Number of CGA style banks        */
60    char    MemoryModel;            /* Memory model type                */
61    char    BankSize;               /* Size of CGA style banks          */
62    char    NumberOfImagePages;     /* Number of images pages           */
63    char    res1;                   /* Reserved                         */
64    char    RedMaskSize;            /* Size of direct color red mask    */
65    char    RedFieldPosition;       /* Bit posn of lsb of red mask      */
66    char    GreenMaskSize;          /* Size of direct color green mask  */
67    char    GreenFieldPosition;     /* Bit posn of lsb of green mask    */
68    char    BlueMaskSize;           /* Size of direct color blue mask   */
69    char    BlueFieldPosition;      /* Bit posn of lsb of blue mask     */
70    char    RsvdMaskSize;           /* Size of direct color res mask    */
71    char    RsvdFieldPosition;      /* Bit posn of lsb of res mask      */
72    char    DirectColorModeInfo;    /* Direct color mode attributes     */
73
74    /* VBE 2.0 extensions */
75
76    long    PhysBasePtr;            /* Physical address for linear buf  */
77    long    OffScreenMemOffset;     /* Pointer to start of offscreen mem*/
78    short   OffScreenMemSize;       /* Amount of offscreen mem in 1K's  */
79    char    res2[206];              /* Pad to 256 byte block size       */
80    } VBE_modeInfo;
81
82#define vbeMemPK        4           /* Packed Pixel memory model        */
83#define vbeUseLFB       0x4000      /* Enable linear framebuffer mode   */
84
85/* Flags for the mode attributes returned by VBE_getModeInfo. If
86 * vbeMdNonBanked is set to 1 and vbeMdLinear is also set to 1, then only
87 * the linear framebuffer mode is available.
88 */
89
90#define vbeMdAvailable  0x0001      /* Video mode is available          */
91#define vbeMdColorMode  0x0008      /* Mode is a color video mode       */
92#define vbeMdGraphMode  0x0010      /* Mode is a graphics mode          */
93#define vbeMdNonBanked  0x0040      /* Banked mode is not supported     */
94#define vbeMdLinear     0x0080      /* Linear mode supported            */
95
96/* Structures for issuing real mode interrupts with DPMI */
97
98struct _RMWORDREGS {
99    unsigned short ax, bx, cx, dx, si, di, cflag;
100    };
101
102struct _RMBYTEREGS {
103    unsigned char   al, ah, bl, bh, cl, ch, dl, dh;
104    };
105
106typedef union {
107    struct  _RMWORDREGS x;
108    struct  _RMBYTEREGS h;
109    } RMREGS;
110
111typedef struct {
112    unsigned short  es;
113    unsigned short  cs;
114    unsigned short  ss;
115    unsigned short  ds;
116    } RMSREGS;
117
118/* Inline assembler block fill/move routines */
119
120void LfbMemset(void *p,int c,int n);
121#pragma aux LfbMemset =             \
122	"shr    ecx,2"                  \
123	"xor    eax,eax"                \
124	"mov    al,bl"                  \
125	"shl    ebx,8"                  \
126	"or     ax,bx"                  \
127	"mov    ebx,eax"                \
128	"shl    ebx,16"                 \
129	"or     eax,ebx"                \
130	"rep    stosd"                  \
131	parm [edi] [ebx] [ecx];
132
133void LfbMemcpy(void *dst,void *src,int n);
134#pragma aux LfbMemcpy =             \
135	"shr    ecx,2"                  \
136	"rep    movsd"                  \
137	parm [edi] [esi] [ecx];
138
139/* Map a real mode pointer into address space */
140
141#define LfbMapRealPointer(p)    (void*)(((unsigned)((p)  & 0xFFFF0000) >> 12) + ((p) & 0xFFFF))
142
143/* Get the current timer tick count */
144
145#define LfbGetTicks()       *((long*)0x46C)
146
147#pragma pack()
148
149#endif  /* __LFBPROF_H */
150