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Added reading screen sizes from crt controller

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svn path=/trunk/; revision=922
This commit is contained in:
Eric Kohl 2000-01-07 18:57:33 +00:00
parent 462fe323eb
commit 6f3d53f751
1 changed files with 58 additions and 13 deletions
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71
reactos/drivers/dd/blue/blue.c
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@ -1,4 +1,4 @@
/* $Id: blue.c,v 1.16 1999/12/11 01:44:29 ekohl Exp $
/* $Id: blue.c,v 1.17 2000/01/07 18:57:33 ekohl Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -19,26 +19,31 @@
#define NDEBUG
#include <internal/debug.h>
/* DEFINITIONS ***************************************************************/
/* uncomment to use fixed screen dimensions */
//#define BLUE_FIXEDSIZE
#define IDMAP_BASE 0xd0000000
#define VIDMEM_BASE 0xb8000
#ifdef BLUE_FIXEDSIZE
#define NR_ROWS 50
#define NR_COLUMNS 80
#define NR_SCANLINES 8
#endif
#define CRTC_COMMAND ((PUCHAR)0x3d4)
#define CRTC_DATA ((PUCHAR)0x3d5)
#define CRTC_COLUMNS 0x01
#define CRTC_OVERFLOW 0x07
#define CRTC_ROWS 0x12
#define CRTC_SCANLINES 0x09
#define CRTC_CURSORSTART 0x0a
#define CRTC_CURSOREND 0x0b
#define CRTC_CURSORPOSLO 0x0f
#define CRTC_CURSORPOSHI 0x0e
#define CRTC_CURSORPOSLO 0x0f
#define ATTRC_WRITEREG ((PUCHAR)0x3c0)
#define ATTRC_READREG ((PUCHAR)0x3c1)
@ -63,8 +68,8 @@ typedef struct _DEVICE_EXTENSION
WORD CharAttribute;
DWORD Mode;
BYTE ScanLines; /* Height of a text line */
BYTE Rows; /* Number of rows */
BYTE Columns; /* Number of columns */
WORD Rows; /* Number of rows */
WORD Columns; /* Number of columns */
} DEVICE_EXTENSION, *PDEVICE_EXTENSION;
@ -86,6 +91,7 @@ ScrCreate (PDEVICE_OBJECT DeviceObject, PIRP Irp)
/* FIXME : use MmMapIoSpace() */
DeviceExtension->VideoMemory = (PBYTE)(IDMAP_BASE + VIDMEM_BASE);
/* disable interrupts */
__asm__("cli\n\t");
/* get current output position */
@ -103,11 +109,36 @@ ScrCreate (PDEVICE_OBJECT DeviceObject, PIRP Irp)
WRITE_PORT_UCHAR (ATTRC_WRITEREG, data);
WRITE_PORT_UCHAR (ATTRC_WRITEREG, value);
READ_PORT_UCHAR (ATTRC_INPST1);
/* read screen information from crt controller */
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_COLUMNS);
DeviceExtension->Columns = READ_PORT_UCHAR (CRTC_DATA) + 1;
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_ROWS);
DeviceExtension->Rows = READ_PORT_UCHAR (CRTC_DATA);
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_OVERFLOW);
data = READ_PORT_UCHAR (CRTC_DATA);
DeviceExtension->Rows |= (((data & 0x02) << 7) | ((data & 0x40) << 3));
DeviceExtension->Rows++;
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_SCANLINES);
DeviceExtension->ScanLines = (READ_PORT_UCHAR (CRTC_DATA) & 0x1F) + 1;
/* enable interrupts */
__asm__("sti\n\t");
/* calculate number of text rows */
DeviceExtension->Rows =
DeviceExtension->Rows / DeviceExtension->ScanLines;
DbgPrint ("%d Columns %d Rows %d Scanlines\n",
DeviceExtension->Columns,
DeviceExtension->Rows,
DeviceExtension->ScanLines);
#ifdef BLUE_FIXEDSIZE
DeviceExtension->ScanLines = NR_SCANLINES; /* FIXME: read it from CRTC */
DeviceExtension->Rows = NR_ROWS; /* FIXME: read it from CRTC */
DeviceExtension->Columns = NR_COLUMNS; /* FIXME: read it from CRTC */
#endif
DeviceExtension->CursorSize = 5; /* FIXME: value correct?? */
DeviceExtension->CursorVisible = TRUE;
@ -118,12 +149,21 @@ ScrCreate (PDEVICE_OBJECT DeviceObject, PIRP Irp)
ENABLE_WRAP_AT_EOL_OUTPUT;
/* show blinking cursor */
/* FIXME: calculate cursor size */
__asm__("cli\n\t");
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_CURSORSTART);
#ifdef BLUE_FIXEDSIZE
WRITE_PORT_UCHAR (CRTC_DATA, 0x47);
#else
WRITE_PORT_UCHAR (CRTC_DATA, (DeviceExtension->ScanLines - 1) & 0x1F);
#endif
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_CURSOREND);
#ifdef BLUE_FIXEDSIZE
WRITE_PORT_UCHAR (CRTC_DATA, 0x07);
#else
data = READ_PORT_UCHAR (CRTC_DATA) & 0xE0;
WRITE_PORT_UCHAR (CRTC_DATA,
data | ((DeviceExtension->ScanLines - 1) & 0x1F));
#endif
__asm__("sti\n\t");
Status = STATUS_SUCCESS;
@ -226,11 +266,11 @@ ScrWrite (PDEVICE_OBJECT DeviceObject, PIRP Irp)
LinePtr[j] = DeviceExtension->CharAttribute << 8;
}
cursory = rows - 1;
for (j = 0; j < columns; j++)
{
vidmem[(j * 2) + (cursory * columns * 2)] = ' ';
vidmem[(j * 2) + (cursory * columns * 2) + 1] = (char) DeviceExtension->CharAttribute;
}
for (j = 0; j < columns; j++)
{
vidmem[(j * 2) + (cursory * columns * 2)] = ' ';
vidmem[(j * 2) + (cursory * columns * 2) + 1] = (char)DeviceExtension->CharAttribute;
}
}
}
@ -270,6 +310,7 @@ ScrIoControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
int columns = DeviceExtension->Columns;
unsigned int offset;
/* read cursor position from crtc */
__asm__("cli\n\t");
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_CURSORPOSLO);
offset = READ_PORT_UCHAR (CRTC_DATA);
@ -335,7 +376,7 @@ ScrIoControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
case IOCTL_CONSOLE_SET_CURSOR_INFO:
{
PCONSOLE_CURSOR_INFO pcci = (PCONSOLE_CURSOR_INFO)Irp->AssociatedIrp.SystemBuffer;
BYTE data;
BYTE data, value;
DWORD size, height;
DeviceExtension->CursorSize = pcci->dwSize;
@ -353,7 +394,11 @@ ScrIoControl (PDEVICE_OBJECT DeviceObject, PIRP Irp)
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_CURSORSTART);
WRITE_PORT_UCHAR (CRTC_DATA, data);
WRITE_PORT_UCHAR (CRTC_COMMAND, CRTC_CURSOREND);
WRITE_PORT_UCHAR (CRTC_DATA, height - 1);
// WRITE_PORT_UCHAR (CRTC_DATA, height - 1);
value = READ_PORT_UCHAR (CRTC_DATA) & 0xE0;
WRITE_PORT_UCHAR (CRTC_DATA, value | (height - 1));
__asm__("sti\n\t");
Irp->IoStatus.Information = 0;