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#if defined(JAZZ)
/*++
Copyright (c) 1989 Microsoft Corporation
Module Name:
jazzG364.c
cAbstract:
This module implements the video prom code for the Jazz G364 video board.
Author:
Lluis Abello (lluis) 20-Jul-1992
Environment:
Kernel mode.
Revision History:
Thid code was moved from jxdisp.c
--*/
#include "fwp.h"
#include "jazzvdeo.h"
#include "jxvideo.h"
#include "ioaccess.h"
JAZZ_VIDEO_TYPE FwVideoType;
MONITOR_CONFIGURATION_DATA DefaultMonitor = {
0, // version :do not change
0, // revision :do not change
1280, // HorizontalResolution
11832, // HorizontalDisplayTime
1596, // HorizontalBackPorch
587, // HorizontalFrontPorch
1745, // HorizontalSync
1024, // VerticalResolution
28, // VerticalBackPorch
1, // VerticalFrontPorch
3, // VerticalSync
0, // HorizontalScreenSize : do not change
0 // VerticalScreenSize : do not change
};
#define G364_PALETTE_BLACK 0x000000
#define G364_PALETTE_RED 0xB00000
#define G364_PALETTE_GREEN 0x00B000
#define G364_PALETTE_YELLOW 0xB0B000
#define G364_PALETTE_BLUE 0x0000B0
#define G364_PALETTE_MAGENTA 0xB000B0
#define G364_PALETTE_CYAN 0x00B0B0
#define G364_PALETTE_WHITE 0xB0B0B0
#define G364_PALETTE_HI_BLACK 0x000000
#define G364_PALETTE_HI_RED 0xFF0000
#define G364_PALETTE_HI_GREEN 0x00FF00
#define G364_PALETTE_HI_YELLOW 0xFFFF00
#define G364_PALETTE_HI_BLUE 0x0000FF
#define G364_PALETTE_HI_MAGENTA 0xFF00FF
#define G364_PALETTE_HI_CYAN 0x00FFFF
#define G364_PALETTE_HI_WHITE 0xFFFFFF
ARC_STATUS
InitializeG364 (
IN PVIDEO_VIRTUAL_SPACE VirtualAdr,
IN OUT PMONITOR_CONFIGURATION_DATA CurrentMonitor
)
/*++
Routine Description:
This routine initializes the G364 video control registers, and clears the
video screen.
Arguments:
None.
Return Value:
If the video was initialized, ESUCCESS is returned, otherwise an error
code is returned.
--*/
{
ULONG ScreenUnitRate;
ULONG MultiplierValue;
ULONG HalfLineTime;
ULONG FrontPorch;
ULONG BackPorch;
ULONG HalfSync;
ULONG TransferDelay;
ULONG DmaDisplay;
ULONG DataLong;
ULONG Index;
PG364_VIDEO_REGISTERS VideoControl = (PG364_VIDEO_REGISTERS) (VirtualAdr->ControlVirtualBase + 0x80000);
PMONITOR_CONFIGURATION_DATA Monitor;
BOOLEAN UpdateMonitor;
//
// Determine if this is actually the G364 board.
//
if (READ_REGISTER_UCHAR((PUCHAR)(VirtualAdr->ControlVirtualBase)) == JazzVideoG364) {
FwVideoType = JazzVideoG364;
} else {
FwVideoType = MipsVideoG364;
}
//
// Reset the whole video board.
//
WRITE_REGISTER_UCHAR((PUCHAR)(VirtualAdr->ControlVirtualBase+0x180000),0);
Monitor = CurrentMonitor;
UpdateMonitor = FALSE;
//
// Check to see if the Monitor parameters are valid.
//
do {
//
// Determine the desired screen unit rate, in picoseconds (a screen unit is
// four pixels).
//
if ((Monitor->HorizontalDisplayTime != 0) && (Monitor->HorizontalResolution != 0)) {
ScreenUnitRate = (Monitor->HorizontalDisplayTime * 1000) * 4 / Monitor->HorizontalResolution;
} else {
continue;
}
if (ScreenUnitRate == 0) {
continue;
}
//
// Multiplier value is the oscillator period (in picoseconds) divided by
// the pixel rate.
//
if (FwVideoType == JazzVideoG364) {
MultiplierValue = 123077 / (ScreenUnitRate / 4);
if (MultiplierValue < 5 || MultiplierValue > 18) {
continue;
}
} else {
MultiplierValue = 200000 / (ScreenUnitRate / 4);
if (MultiplierValue < 5 || MultiplierValue > 29) {
continue;
}
}
break;
//
// If the while is executed, the parameters are not valid. Set UpdateMonitor
// and point to the default parameters, which are valid. Note that the
// "while" will evaluate TRUE because the value of (a,b) is the value of b.
//
} while (Monitor = &DefaultMonitor, UpdateMonitor = TRUE);
//
// Update the monitor parameters if necessary.
//
if (UpdateMonitor) {
CurrentMonitor->HorizontalResolution = DefaultMonitor.HorizontalResolution;
CurrentMonitor->HorizontalDisplayTime = DefaultMonitor.HorizontalDisplayTime;
CurrentMonitor->HorizontalBackPorch = DefaultMonitor.HorizontalBackPorch;
CurrentMonitor->HorizontalFrontPorch = DefaultMonitor.HorizontalFrontPorch;
CurrentMonitor->HorizontalSync = DefaultMonitor.HorizontalSync;
CurrentMonitor->VerticalResolution = DefaultMonitor.VerticalResolution;
CurrentMonitor->VerticalBackPorch = DefaultMonitor.VerticalBackPorch;
CurrentMonitor->VerticalFrontPorch = DefaultMonitor.VerticalFrontPorch;
CurrentMonitor->VerticalSync = DefaultMonitor.VerticalSync;
}
//
// write multiplier value
//
DataLong = 0;
((PG364_VIDEO_BOOT)(&DataLong))->ClockSelect = 1;
((PG364_VIDEO_BOOT)(&DataLong))->MicroPort64Bits = 1;
((PG364_VIDEO_BOOT)(&DataLong))->Multiplier = MultiplierValue;
WRITE_REGISTER_ULONG(&VideoControl->Boot.Long, DataLong);
//
// Initialize the G364 control parameters.
//
DataLong = 0;
//
// If vertical front porch is 1, use tesselated sync, otherwise use normal sync.
//
if (Monitor->VerticalFrontPorch > 1) {
((PG364_VIDEO_PARAMETERS)(&DataLong))->PlainSync = 1;
}
((PG364_VIDEO_PARAMETERS)(&DataLong))->DelaySync = G364_DELAY_SYNC_CYCLES;
((PG364_VIDEO_PARAMETERS)(&DataLong))->BitsPerPixel = EIGHT_BITS_PER_PIXEL;
((PG364_VIDEO_PARAMETERS)(&DataLong))->AddressStep = G364_ADDRESS_STEP_INCREMENT;
((PG364_VIDEO_PARAMETERS)(&DataLong))->DisableCursor = 1;
WRITE_REGISTER_ULONG(&VideoControl->Parameters.Long, DataLong);
//
// Initialize the G364 operational values.
//
HalfSync = (Monitor->HorizontalSync * 1000) / ScreenUnitRate / 2;
WRITE_REGISTER_ULONG(&VideoControl->HorizontalSync.Long, HalfSync );
BackPorch = (Monitor->HorizontalBackPorch * 1000) / ScreenUnitRate;
WRITE_REGISTER_ULONG(&VideoControl->BackPorch.Long, BackPorch );
WRITE_REGISTER_ULONG(&VideoControl->Display.Long, Monitor->HorizontalResolution / 4);
//
// The LineTime needs to be an even number of units, so calculate LineTime / 2
// and then multiply by two to program. ShortDisplay and BroadPulse also
// use LineTime / 2.
//
HalfLineTime = (Monitor->HorizontalSync + Monitor->HorizontalFrontPorch +
Monitor->HorizontalBackPorch + Monitor->HorizontalDisplayTime) * 1000 /
ScreenUnitRate / 2;
WRITE_REGISTER_ULONG(&VideoControl->LineTime.Long, HalfLineTime * 2);
FrontPorch = (Monitor->HorizontalFrontPorch * 1000) / ScreenUnitRate;
WRITE_REGISTER_ULONG(&VideoControl->ShortDisplay.Long,
HalfLineTime - ((HalfSync * 2) + BackPorch + FrontPorch));
WRITE_REGISTER_ULONG(&VideoControl->BroadPulse.Long, HalfLineTime - FrontPorch);
WRITE_REGISTER_ULONG(&VideoControl->VerticalSync.Long, Monitor->VerticalSync * 2);
WRITE_REGISTER_ULONG(&VideoControl->VerticalPreEqualize.Long, Monitor->VerticalFrontPorch * 2);
WRITE_REGISTER_ULONG(&VideoControl->VerticalPostEqualize.Long, 1 * 2);
WRITE_REGISTER_ULONG(&VideoControl->VerticalBlank.Long,
(Monitor->VerticalBackPorch - 1) * 2);
WRITE_REGISTER_ULONG(&VideoControl->VerticalDisplay.Long, Monitor->VerticalResolution * 2);
WRITE_REGISTER_ULONG(&VideoControl->LineStart.Long, LINE_START_VALUE);
//
// Transfer delay is 1.65 microseconds expressed in screen units, plus 1.
//
TransferDelay = (1650000 / ScreenUnitRate) + 1;
if (BackPorch <= TransferDelay) {
TransferDelay = BackPorch - 1;
}
WRITE_REGISTER_ULONG(&VideoControl->TransferDelay.Long, TransferDelay);
//
// DMA display (also known as MemInit) is 1024 (the length of the VRAM
// shift register) minus TransferDelay.
//
DmaDisplay = 1024 - TransferDelay;
WRITE_REGISTER_ULONG(&VideoControl->DmaDisplay.Long, DmaDisplay);
WRITE_REGISTER_ULONG(&VideoControl->PixelMask.Long, G364_PIXEL_MASK_VALUE);
//
// Set up the color map.
//
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_BLACK],
G364_PALETTE_BLACK);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_RED],
G364_PALETTE_RED);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_GREEN],
G364_PALETTE_GREEN);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_YELLOW],
G364_PALETTE_YELLOW);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_BLUE],
G364_PALETTE_BLUE);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_MAGENTA],
G364_PALETTE_MAGENTA);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_CYAN],
G364_PALETTE_CYAN);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_WHITE],
G364_PALETTE_WHITE);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_BLACK],
G364_PALETTE_HI_BLACK);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_RED],
G364_PALETTE_HI_RED);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_GREEN],
G364_PALETTE_HI_GREEN);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_YELLOW],
G364_PALETTE_HI_YELLOW);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_BLUE],
G364_PALETTE_HI_BLUE);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_MAGENTA],
G364_PALETTE_HI_MAGENTA);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_CYAN],
G364_PALETTE_HI_CYAN);
WRITE_REGISTER_ULONG(&VideoControl->ColorMapData[FW_COLOR_HI_WHITE],
G364_PALETTE_HI_WHITE);
//
// Enable the G364
//
((PG364_VIDEO_PARAMETERS)(&DataLong))->EnableVideo = 1;
WRITE_REGISTER_ULONG(&VideoControl->Parameters.Long, DataLong);
//
// G364 C04 bug # 6:
// "The action of starting the VTG may cause the TopOfScreen register to become corrupted"
//
WRITE_REGISTER_ULONG(&VideoControl->TopOfScreen, 0);
return ESUCCESS;
}
#endif
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