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/* Copyright (c) 1993 NeXT Computer, Inc. All rights reserved.
*
* IOSVGADisplay.h - SVGA display driver class.
*
*
* HISTORY
* 07 July 93 Scott Forstall
* Created.
*/
/*
* Notes:
* This module defines an abstract superclass for SVGA display
* drivers.
*/
#import <driverkit/IODisplay.h>
@interface IOSVGADisplay:IODisplay
{
@private
void *_priv;
}
/*
* Select which 64K segment we intend to read from. This method is
* implemented by subclasses in a device specific way.
*/
- (void)setReadSegment: (unsigned char)segmentNum;
/*
* Select which 64K segment we intend to write to. This method is
* implemented by subclasses in a device specific way.
*/
- (void)setWriteSegment: (unsigned char)segmentNum;
/*
* Select which of 4 bit planes to read from in planar modes. This method
* is implemented by subclasses in a device specific way.
*/
- (void)setReadPlane: (unsigned char)planeNum;
/*
* Select which of 4 bit planes to write to in planar modes. This method
* is implemented by subclasses in a device specific way.
*/
- (void)setWritePlane: (unsigned char)planeNum;
/*
* Save write plane, read plane, write segment, and read segment.
* This method is implemented by subclasses in a device specific way.
*/
- (void)savePlaneAndSegmentSettings;
/*
* Restore write plane, read plane, write segment, and read segment.
* This method is implemented by subclasses in a device specific way.
*/
- (void)restorePlaneAndSegmentSettings;
/*
* Put the display into SVGA mode. This typically happens
* when the window server starts running. This method is implemented by
* subclasses in a device specific way.
*/
- (void)enterSVGAMode;
/*
* Get the device out of whatever advanced mode it was using and back
* into a state where it can be used as a standard VGA device. This method
* is implemented by subclasses in a device specific way.
*/
- (void)revertToVGAMode;
/*
* Look up the physical memory location for this device instance and map
* it into VM for use by the device driver. If problems occur, the method
* returns (vm_address_t)0. If `addr' is not 0, then it is used as the
* physical memory address and `length' is used as the length.
*/
- (vm_address_t)mapFrameBufferAtPhysicalAddress:(unsigned int)addr
length:(int)length;
/*
* Choose a mode from the list `modeList' (containing `count' modes) based
* on the value of the `DisplayMode' key in the device's config table. If
* `isValid' is nonzero, each element specifies whether or not the
* corresponding mode is valid.
*/
- (int)selectMode:(const IODisplayInfo *)modeList count:(int)count
valid:(const BOOL *)isValid;
/*
* Equivalent to the above with `isValid' set to zero.
*/
- (int)selectMode:(const IODisplayInfo *)modeList count:(int)count;
/*
* IODevice methods reimplemented by this class.
*/
+ (BOOL)probe:deviceDescription;
- initFromDeviceDescription:deviceDescription;
- (IOReturn)getIntValues : (unsigned *)parameterArray
forParameter : (IOParameterName)parameterName
count : (unsigned *)count; /* in/out*/
- (IOReturn)setIntValues : (unsigned *)parameterArray
forParameter : (IOParameterName)parameterName
count : (unsigned)count;
/*
* `evScreen' protocol methods reimplemented by this class.
*/
- hideCursor: (int)token;
- moveCursor:(Point*)cursorLoc frame:(int)frame token:(int)t;
- showCursor:(Point*)cursorLoc frame:(int)frame token:(int)t;
/*
* NOTE: Subclasses must override setBrightness and implement appropriately.
*/
- setBrightness:(int)level token:(int)t;
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.