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Diffstat (limited to 'hw/kdrive/src/vga.h')
| -rw-r--r-- | hw/kdrive/src/vga.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/hw/kdrive/src/vga.h b/hw/kdrive/src/vga.h new file mode 100644 index 000000000..b254152cb --- /dev/null +++ b/hw/kdrive/src/vga.h @@ -0,0 +1,132 @@ +/* + * $Id$ + * + * Copyright © 1999 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ +/* $XFree86: $ */ + +#ifndef _VGA_H_ +#define _VGA_H_ + +typedef unsigned long VGA32; +typedef unsigned short VGA16; +typedef unsigned char VGA8; +typedef int VGABOOL; +typedef volatile VGA8 VGAVOL8; + +#define VGATRUE 1 +#define VGAFALSE 0 + +typedef struct _vgaReg { + VGA16 id; + VGA8 base; + VGA8 len; +} VgaReg; + +#define VGA_REG_NONE 0xffff +#define VGA_REG_END VGA_REG_NONE, 0, 0 + +typedef struct _vgaValue { + VGA8 save; + VGA8 cur; + VGA16 flags; +} VgaValue; + +#define VGA_VALUE_VALID 1 /* value ever fetched */ +#define VGA_VALUE_MODIFIED 2 /* value ever changed */ +#define VGA_VALUE_DIRTY 4 /* value needs syncing */ +#define VGA_VALUE_SAVED 8 /* value preserved */ + +typedef enum _vgaAccess { + VgaAccessMem, VgaAccessIo, VgaAccessIndMem, VgaAccessIndIo, + VgaAccessDone, +} VgaAccess; + +typedef struct _vgaMap { + VgaAccess access; + VGA32 port; + VGA8 addr; /* for Ind access; addr offset from port */ + VGA8 value; /* for Ind access; value offset from port */ + VGA8 index; /* for Ind access; index value */ +} VgaMap; + +#define VGA_UNLOCK_FIXED 1 /* dont save current value */ +#define VGA_UNLOCK_LOCK 2 /* execute only on relock */ +#define VGA_UNLOCK_UNLOCK 4 /* execute only on unlock */ + +typedef struct _vgaSave { + VGA16 first; + VGA16 last; +} VgaSave; + +#define VGA_SAVE_END VGA_REG_NONE, VGA_REG_NONE + +typedef struct _vgaCard { + void (*map) (struct _vgaCard *card, VGA16 reg, VgaMap *map, VGABOOL write); + void *closure; + int max; + VgaValue *values; + VgaSave *saves; +} VgaCard; + +VGA8 +VgaInb (VGA16 r); + +void +VgaOutb (VGA8 v, VGA16 r); + +void +VgaSetImm (VgaCard *card, VgaReg *reg, VGA32 value); + +VGA32 +VgaGetImm (VgaCard *card, VgaReg *reg); + +void +VgaSet (VgaCard *card, VgaReg *reg, VGA32 value); + +VGA32 +VgaGet (VgaCard *card, VgaReg *reg); + +void +VgaFlush (VgaCard *card); + +void +VgaFill (VgaCard *card, VGA16 low, VGA16 high); + +void +VgaPreserve (VgaCard *card); + +void +VgaRestore (VgaCard *card); + +VGA8 +VgaFetch (VgaCard *card, VGA16 id); + +void +VgaStore (VgaCard *card, VGA16 id, VGA8 value); + +VGA8 +_VgaFetchInd (VGA16 port, VGA8 reg); + +void +_VgaStoreInd (VGA16 port, VGA8 reg, VGA8 value); + +#endif /* _VGA_H_ */ |