+++ /dev/null
-/*++
-
-Copyright (c) 1998-2001 Klaus P. Gerlicher
-
-Module Name:
-
- vga.c
-
-Abstract:
-
- VGA HW dependent draw routines
-
-Environment:
-
- Kernel mode only
-
-Author:
-
- Klaus P. Gerlicher
- Reactos Port by Eugene Ingerman
-
-Revision History:
-
- 04-Aug-1998: created
- 15-Nov-2000: general cleanup of source files
-
-Copyright notice:
-
- This file may be distributed under the terms of the GNU Public License.
-
---*/
-
-////////////////////////////////////////////////////
-// INCLUDES
-////
-#include "remods.h"
-#include "precomp.h"
-
-//#include <asm/io.h>
-//#include <linux/ctype.h>
-
-
-////////////////////////////////////////////////////
-// PROTOTYPES
-////
-extern void pice_save_current_registers(void);
-extern void pice_restore_current_registers(void);
-extern void pice_set_mode_3_80x50(void);
-extern void pice_set_mode_3_80x25(void);
-
-extern UCHAR cGraphTable[8*256];
-
-// storage for original VGA font
-UCHAR cGraphTable2[16*256];
-
-////////////////////////////////////////////////////
-// DEFINES
-////
-#define VGA_EXTENDED // define this for 80x50 console mode
-
-#ifndef VGA_EXTENDED
-#define SCREEN_BUFFER_SIZE (80*25*2)
-#else
-#define SCREEN_BUFFER_SIZE (80*50*2)
-#endif
-
-/* Port addresses of control regs */
-#define MISCOUTPUT 0x3c2
-#define FEATURECONTROL 0x3da
-#define SEQUENCER 0x3c4
-#define CRTC 0x03d4
-#define GRAPHICS 0x3ce
-#define ATTRIBS 0x03c0
-#define PELADDRESSWRITE 0x3c8
-#define PELDATAREG 0x3c9
-
-/* Number of regs on the various controllers */
-
-#define MAXSEQ 5
-#define MAXCRTC 0x19
-#define MAXGRAPH 0x9
-#define MAXATTRIB 0x015
-
-////////////////////////////////////////////////////
-// GLOBALS
-////
-// used for HERCULES text and VGA text mode
-WINDOW wWindowVga[4]=
-#ifndef VGA_EXTENDED
-{
- {1,3,1,0,FALSE},
- {5,4,1,0,FALSE},
- {10,9,1,0,FALSE},
- {20,4,1,0,FALSE}
-};
-#else // VGA_EXTENDED
-{
- {1,3,1,0,FALSE},
- {5,4,1,0,FALSE},
- {10,24,1,0,FALSE},
- {35,14,1,0,FALSE}
-};
-#endif // VGA_EXTENDED
-
-PUCHAR pScreenBufferVga;
-PUCHAR pScreenBufferSaveVga = NULL;
-PUCHAR pScreenBufferTempVga;
-PUCHAR pScreenBufferHardwareVga;
-PUCHAR pFontBufferVga = NULL;
-
-UCHAR offset_a = 0;
-UCHAR offset_c = 0,offset_d = 0;
-UCHAR offset_e = 0,offset_f = 0;
-
-struct _attr
-{
- union
- {
- struct
- {
-
- UCHAR fgcol : 4;
- UCHAR bkcol : 3;
- UCHAR blink : 1;
- }bits;
- UCHAR Asuchar;
- }u;
-}attr;
-
-unsigned char oldgraphicsmode;
-unsigned char oldgraphicsmisc;
-unsigned char oldsqregmapmask;
-unsigned char oldsqregmemory;
-unsigned char oldgraphicssetresetenable;
-unsigned char oldgraphicsreadmapsel;
-
-unsigned char read_vga_reg(int port, int reg)
-{
- outportb(port,reg);
- return(inportb(port+1));
-}
-
-void write_vga_reg(int port, unsigned char reg, unsigned char value)
-{
- outportb(port,reg);
- outportb(port+1,value);
-}
-
-/* Registers within controllers */
-#define VREND 0x11
-#define GRREGSETRESET 0
-#define GRREGENABLESETRESET 1
-#define GRREGREADMAPSEL 4
-#define SQREGMAPMASK 2
-#define SQREGMEMORY 4
-#define GRREGWRMODE 5
-#define GRREGMISC 6
-
-void map_font_memory(void)
-{
- oldgraphicssetresetenable = read_vga_reg(GRAPHICS, GRREGENABLESETRESET);
- oldgraphicsmode = read_vga_reg(GRAPHICS, GRREGWRMODE);
- oldgraphicsmisc = read_vga_reg(GRAPHICS, GRREGMISC);
- oldgraphicsreadmapsel = read_vga_reg(GRAPHICS, GRREGREADMAPSEL);
- oldsqregmapmask = read_vga_reg(SEQUENCER, SQREGMAPMASK);
- oldsqregmemory = read_vga_reg(SEQUENCER, SQREGMEMORY);
-
-
- /* Make sure set/reset enable is off */
- write_vga_reg(GRAPHICS,GRREGENABLESETRESET,0);
- /* Select read plane 2 */
- write_vga_reg(GRAPHICS,GRREGREADMAPSEL,0x02);
- /* Make sure write and read mode = 0 */
- write_vga_reg(GRAPHICS,GRREGWRMODE,0x00);
- /* Set mapping to 64K at a000:0 & turn off odd/even at the graphics reg */
- write_vga_reg(GRAPHICS,GRREGMISC, 0x04);
- /* Set sequencer plane to 2 */
- write_vga_reg(SEQUENCER,SQREGMAPMASK, 0x04);
- /* Turn off odd/even at the sequencer */
- write_vga_reg(SEQUENCER,SQREGMEMORY, 0x07);
-}
-
-void unmap_font_memory(void)
-{
- write_vga_reg(GRAPHICS,GRREGENABLESETRESET,oldgraphicssetresetenable);
- write_vga_reg(GRAPHICS,GRREGWRMODE,oldgraphicsmode);
- write_vga_reg(GRAPHICS,GRREGREADMAPSEL,oldgraphicsreadmapsel);
- write_vga_reg(GRAPHICS,GRREGMISC, oldgraphicsmisc);
- write_vga_reg(SEQUENCER,SQREGMAPMASK, oldsqregmapmask);
- write_vga_reg(SEQUENCER,SQREGMEMORY, oldsqregmemory);
-}
-
-/* Font and palette constants */
-#define BYTESPERFONT 8
-#define FONTENTRIES 256
-#define FONTBUFFERSIZE 8192
-
-void save_font(UCHAR* graph_table)
-{
- PUCHAR FontBase = pFontBufferVga;
- int i,j;
- map_font_memory();
-
- for (i=0; i < FONTENTRIES; i++)
- for (j=0; j < 16; j++)
- graph_table[i*16+j] = FontBase[i*32+j];
-
- unmap_font_memory();
-}
-
-void load_font(UCHAR* graph_table,int bEnter)
-{
- PUCHAR FontBase = pFontBufferVga;
- int i,j;
- map_font_memory();
-
- if(bEnter)
- {
-#ifdef VGA_EXTENDED
- for (i=0; i < FONTENTRIES; i++)
- for (j=0; j < 8; j++)
- FontBase[i*32+j] = graph_table[i*BYTESPERFONT+j];
-#else // VGA_EXTENDED
- for (i=0; i < FONTENTRIES; i++)
- for (j=0; j < 16; j++)
- FontBase[i*32+j] = graph_table[i*BYTESPERFONT+(j/2)] << (j&1);
-#endif // VGA_EXTENDED
- }
- else
- {
- for (i=0; i < FONTENTRIES; i++)
- for (j=0; j < 16; j++)
- FontBase[i*32+j] = graph_table[i*16+j];
- }
-
- unmap_font_memory();
-}
-
-//*************************************************************************
-// SetForegroundColorVga()
-//
-//*************************************************************************
-void SetForegroundColorVga(ECOLORS col)
-{
- attr.u.bits.fgcol = col;
- attr.u.bits.blink = 0;
-}
-
-//*************************************************************************
-// SetBackgroundColorVga()
-//
-//*************************************************************************
-void SetBackgroundColorVga(ECOLORS col)
-{
- attr.u.bits.bkcol = col;
- attr.u.bits.blink = 0;
-}
-
-//*************************************************************************
-// PrintGrafVga()
-//
-//*************************************************************************
-void PrintGrafVga(ULONG x,ULONG y,UCHAR c)
-{
- ((PUSHORT)pScreenBufferVga)[y*GLOBAL_SCREEN_WIDTH + x] = (USHORT)((attr.u.Asuchar<<8)|c);
-}
-
-//*************************************************************************
-// ShowCursor()
-//
-// show hardware cursor
-//*************************************************************************
-void ShowCursorVga(void)
-{
- ENTER_FUNC();
-
- bCursorEnabled=TRUE;
-
- outb_p(0x0a,0x3d4);
- outb_p(inb_p(0x3d5)&~0x20,0x3d5);
-
- LEAVE_FUNC();
-}
-
-//*************************************************************************
-// HideCursorVga()
-//
-// hide hardware cursor
-//*************************************************************************
-void HideCursorVga(void)
-{
- ENTER_FUNC();
- bCursorEnabled=FALSE;
-
- outb_p(0x0a,0x3d4);
- outb_p(inb_p(0x3d5)|0x20,0x3d5);
-
- LEAVE_FUNC();
-}
-
-//*************************************************************************
-// CopyLineTo()
-//
-// copy a line from src to dest
-//*************************************************************************
-void CopyLineToVga(USHORT dest,USHORT src)
-{
- PUSHORT p = (PUSHORT)pScreenBufferVga;
-
- ENTER_FUNC();
-
- PICE_memcpy(&p[dest*GLOBAL_SCREEN_WIDTH],&p[src*GLOBAL_SCREEN_WIDTH],GLOBAL_SCREEN_WIDTH*sizeof(USHORT));
-
- LEAVE_FUNC();
-}
-
-//*************************************************************************
-// InvertLineVga()
-//
-// invert a line on the screen
-//*************************************************************************
-void InvertLineVga(ULONG line)
-{
- ULONG i;
- PUSHORT p = (PUSHORT)pScreenBufferVga;
- USHORT attr;
-
- if(line < GLOBAL_SCREEN_HEIGHT)
- {
- attr = p[line*GLOBAL_SCREEN_WIDTH]>>8;
- attr = ((attr & 0x07)<<4) | ((attr & 0xF0)>>4);
- attr <<= 8;
- for(i=0;i<GLOBAL_SCREEN_WIDTH;i++)
- p[line*GLOBAL_SCREEN_WIDTH + i] = (p[line*GLOBAL_SCREEN_WIDTH + i] & 0x00FF) | attr;
- }
-}
-
-//*************************************************************************
-// HatchLineVga()
-//
-// hatches a line on the screen
-//*************************************************************************
-void HatchLineVga(ULONG line)
-{
- ULONG i;
- PUSHORT p = (PUSHORT)pScreenBufferVga;
-
- if(line < GLOBAL_SCREEN_HEIGHT)
- {
- for(i=0;i<GLOBAL_SCREEN_WIDTH;i++)
- p[line*GLOBAL_SCREEN_WIDTH + i] = (p[line*GLOBAL_SCREEN_WIDTH + i] & 0xF0FF) | 0x0c00;
- }
-}
-
-//*************************************************************************
-// ClrLineVga()
-//
-// clear a line on the screen
-//*************************************************************************
-void ClrLineVga(ULONG line)
-{
- ULONG i;
- PUSHORT p = (PUSHORT)pScreenBufferVga;
-
- if(line < GLOBAL_SCREEN_HEIGHT)
- {
- for(i=0;i<GLOBAL_SCREEN_WIDTH;i++)
- p[line*GLOBAL_SCREEN_WIDTH + i] = (USHORT)((attr.u.Asuchar<<8) | 0x20);
- }
-}
-
-//*************************************************************************
-// PrintLogoVga()
-//
-//*************************************************************************
-void PrintLogoVga(BOOLEAN bShow)
-{
- NOT_IMPLEMENTED();
-}
-
-//*************************************************************************
-// PrintCursorVga()
-//
-// emulate a blinking cursor block
-//*************************************************************************
-void PrintCursorVga(BOOLEAN bForce)
-{
- static ULONG count=0;
- USHORT charoffset;
- UCHAR data;
- ULONG x=wWindow[OUTPUT_WINDOW].usCurX,y=wWindow[OUTPUT_WINDOW].y+wWindow[OUTPUT_WINDOW].usCurY;
-
- if( count++>250 )
- {
- count=0;
-
- charoffset = (y* GLOBAL_SCREEN_WIDTH + x);
-
- outb_p(0x0e,0x3d4);
- data=(UCHAR)((charoffset>>8)&0xFF);
- outb_p(data,0x3d5);
-
- outb_p(0x0f,0x3d4);
- data=(UCHAR)(charoffset & 0xFF);
- outb_p(data,0x3d5);
- }
-}
-
-//*************************************************************************
-// SaveGraphicsVga()
-//
-//*************************************************************************
-void SaveGraphicsStateVga(void)
-{
- UCHAR data;
-
- // save current regs
- pice_save_current_registers();
-
- // unprotect crtc regs 0-7
- outb_p(0x11,0x3d4);
- data = inb_p(0x3d5);
- outb_p(data & 0x7F,0x3d5);
-
- // save current font
- save_font(cGraphTable2);
-
- // restore original regs
-#ifdef VGA_EXTENDED
- pice_set_mode_3_80x50();
-#else
- pice_set_mode_3_80x25();
-#endif
-
- // load a font
- load_font(cGraphTable,1);
-
- // copy the screen content to temp area
- PICE_memcpy(pScreenBufferTempVga,pScreenBufferHardwareVga,SCREEN_BUFFER_SIZE);
- // copy the console to the screen
- PICE_memcpy(pScreenBufferHardwareVga,pScreenBufferVga,SCREEN_BUFFER_SIZE);
- // save original pointer
- pScreenBufferSaveVga = pScreenBufferVga;
- // pScreenBufferVga now points to screen
- pScreenBufferVga = pScreenBufferHardwareVga;
-}
-
-//*************************************************************************
-// RestoreGraphicsStateVga()
-//
-//*************************************************************************
-void RestoreGraphicsStateVga(void)
-{
- UCHAR data;
-
- // unprotect crtc regs 0-7
- outb_p(0x11,0x3d4);
- data = inb_p(0x3d5);
- outb_p(data & 0x7F,0x3d5);
-
- // restore original regs
- pice_restore_current_registers();
-
- // load a font
- load_font(cGraphTable2,0);
-
- pScreenBufferVga = pScreenBufferSaveVga;
- // copy screen to the console
- PICE_memcpy(pScreenBufferVga,pScreenBufferHardwareVga,SCREEN_BUFFER_SIZE);
- // copy the temp area to the screen
- PICE_memcpy(pScreenBufferHardwareVga,pScreenBufferTempVga,SCREEN_BUFFER_SIZE);
-}
-
-//*************************************************************************
-// ConsoleInitVga()
-//
-// init terminal screen
-//*************************************************************************
-BOOLEAN ConsoleInitVga(void)
-{
- BOOLEAN bResult = FALSE;
- PUSHORT p;
- PHYSICAL_ADDRESS FrameBuffer;
- PHYSICAL_ADDRESS FontBuffer;
-
-
- ENTER_FUNC();
-
- ohandlers.CopyLineTo = CopyLineToVga;
- ohandlers.PrintGraf = PrintGrafVga;
- ohandlers.ClrLine = ClrLineVga;
- ohandlers.InvertLine = InvertLineVga;
- ohandlers.HatchLine = HatchLineVga;
- ohandlers.PrintLogo = PrintLogoVga;
- ohandlers.PrintCursor = PrintCursorVga;
- ohandlers.SaveGraphicsState = SaveGraphicsStateVga;
- ohandlers.RestoreGraphicsState = RestoreGraphicsStateVga;
- ohandlers.ShowCursor = ShowCursorVga;
- ohandlers.HideCursor = HideCursorVga;
- ohandlers.SetForegroundColor = SetForegroundColorVga;
- ohandlers.SetBackgroundColor = SetBackgroundColorVga;
-
- ihandlers.GetKeyPolled = KeyboardGetKeyPolled;
- ihandlers.FlushKeyboardQueue = KeyboardFlushKeyboardQueue;
-
- SetWindowGeometry(wWindowVga);
-
- GLOBAL_SCREEN_WIDTH = 80;
-#ifndef VGA_EXTENDED
- GLOBAL_SCREEN_HEIGHT = 25;
-#else // VGA_EXTENDED
- GLOBAL_SCREEN_HEIGHT = 50;
-#endif // VGA_EXTENDED
-
- attr.u.Asuchar = 0x07;
-
- // the real framebuffer
- FrameBuffer.u.LowPart = 0xB8000;
- pScreenBufferHardwareVga = MmMapIoSpace(FrameBuffer,SCREEN_BUFFER_SIZE,MmNonCached);
-
- //The real font buffer
- FontBuffer.u.LowPart = 0xA0000;
- pFontBufferVga = MmMapIoSpace(FontBuffer,FONTBUFFERSIZE,MmNonCached);
-
- // the console
- pScreenBufferVga = PICE_malloc(SCREEN_BUFFER_SIZE,NONPAGEDPOOL);
- // the save area
- pScreenBufferTempVga = PICE_malloc(SCREEN_BUFFER_SIZE,NONPAGEDPOOL);
-
- if(pScreenBufferVga)
- {
- DPRINT((0,"VGA memory phys. 0x000b0000 mapped to virt. 0x%x\n",pScreenBufferVga));
-
- bResult = TRUE;
-
- p = (PUSHORT)pScreenBufferVga;
-
- PICE_memset(pScreenBufferVga,0x0,SCREEN_BUFFER_SIZE);
-
- DPRINT((0,"VGA memory cleared!\n"));
-
- EmptyRingBuffer();
-
- DPRINT((0,"ConsoleInitVga() SUCCESS!\n"));
- }
-
- LEAVE_FUNC();
-
- return bResult;
-}
-
-//*************************************************************************
-// ConsoleShutdownVga()
-//
-// exit terminal screen
-//*************************************************************************
-void ConsoleShutdownVga(void)
-{
- ENTER_FUNC();
-
- if(pScreenBufferVga)
- {
- PICE_free(pScreenBufferVga);
- PICE_free(pScreenBufferTempVga);
- MmUnmapIoSpace(pScreenBufferHardwareVga,SCREEN_BUFFER_SIZE);
- MmUnmapIoSpace(pFontBufferVga,FONTBUFFERSIZE);
- }
-
- LEAVE_FUNC();
-}
-
-
projects / reactos.git / blobdiff