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Annotation of kernel/bsd/dev/ppc/kmDevice.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*     Copyright (c) 1992 NeXT Computer, Inc.  All rights reserved. 
        !            26:  *
        !            27:  * kmDevice.h - private #defines and class definition for kernel
        !            28:  *             keyboard/monitor module.
        !            29:  *
        !            30:  * HISTORY
        !            31:  * 16-Jan-92    Doug Mitchell at NeXT 
        !            32:  *      Created. 
        !            33:  */
        !            34:  
        !            35: #ifdef DRIVER_PRIVATE
        !            36: 
        !            37: #import <driverkit/IODevice.h>
        !            38: #import "PCKeyboardDefs.h"
        !            39: #import "ConsoleSupport.h"
        !            40: 
        !            41: #define NUM_KM_DEVS    1
        !            42: #define FB_DEV_NORMAL  0               // frameBuffer for normal I/O
        !            43: #define FB_DEV_ALERT   1               // frameBuffer for alert panels
        !            44: #define NUM_FB_DEVS    2
        !            45: 
        !            46: #define INBUF_SIZE     16              // size of circular buffer for 
        !            47:                                        //   blocking getc
        !            48: 
        !            49: /*
        !            50:  * This class's interface is private to km.m and kmPrivate.m. The 
        !            51:  * kmDevice is the glue between the bsd device interface (kmopen, kmputc, 
        !            52:  * etc.) and the two classes which do the actual I/O - adbKeyboard and 
        !            53:  * frameBuffer.
        !            54:  */
        !            55: @interface kmDevice : IODevice <PCKeyboardImported>
        !            56: {
        !            57:        /*
        !            58:         * kmOpenLock (an NXLock) protects all operations which create and
        !            59:         * destroy frameBuffer instances.
        !            60:         */
        !            61:        id              kmOpenLock;
        !            62: 
        !            63:        /*
        !            64:         * frame buffer state.
        !            65:         */
        !            66:        IOConsoleInfo   *fbp[NUM_FB_DEVS];      // output devices
        !            67:        ScreenMode      fbMode;                 // current screen mode
        !            68:        ScreenMode      savedFbMode;            // screen mode before entering
        !            69:                                                //   FBM_ALERT
        !            70:        int             alertRefCount;
        !            71:        
        !            72:        /*
        !            73:         * Keyboard info.
        !            74:         */
        !            75:        id              kbId;                   // input device (adbKeyboard)
        !            76:        unsigned        blockIn:1;              // indicates "blocking getc()
        !            77:                                                //   mode"
        !            78:        
        !            79:        
        !            80:        /*
        !            81:         * Circular buffer for blocking getc(). A thread waiting for
        !            82:         * synchronous input locks inBufLock and sleeps on inBuf.
        !            83:         */
        !            84:        int             inBuf[INBUF_SIZE];
        !            85:        int             inDex;                  // in pointer
        !            86:        int             outDex;                 // out pointer
        !            87:        simple_lock_data_t inBufLock;
        !            88:        
        !            89:        BOOL            hasRegistered;          // have called registerDevice
        !            90:        BOOL            probed;                 // have been probed
        !            91: }
        !            92: 
        !            93: /*
        !            94:  * Standard direct device probe.
        !            95:  */
        !            96: + (BOOL)probe : deviceDescription;
        !            97: + (IODeviceStyle)deviceStyle;
        !            98: 
        !            99: - init                                         : (BOOL)initKb
        !           100:                                          fb_mode : (ScreenMode)fb_mode;
        !           101: 
        !           102: /*
        !           103:  * Keyboard-specific initialization.
        !           104:  */
        !           105: - initKb;
        !           106: 
        !           107: /*
        !           108:  * Interface to bsd code.
        !           109:  */
        !           110: - (int)kmOpen                          : (int)flag;
        !           111: - (int)kmPutc                          : (int)c;       // paint one character
        !           112: - (int)kmGetc;                                         // blocking read
        !           113: 
        !           114: /*
        !           115:  * ioctl equivalents.
        !           116:  */
        !           117: - (int)restore;
        !           118: - (int)drawRect                                : (const struct km_drawrect *)kmRect;
        !           119: - (int)eraseRect                       : (const struct km_drawrect *)kmRect;
        !           120: - (int)disableCons;
        !           121: 
        !           122: - (int)animationCtl                    : (km_anim_ctl_t)ctl;
        !           123: - (int)getStatus                       : (unsigned *)statusp;
        !           124: - (int)getScreenSize                   : (struct ConsoleSize *)size;
        !           125: 
        !           126: /*
        !           127:  * Kernel internal alert panel support.
        !           128:  */
        !           129: - (void)doAlert                                : (const char *)windowTitle
        !           130:                                          msg : (const char *)msg;
        !           131: 
        !           132: - (void)registerDisplay:newDisplay;
        !           133: - (void)unregisterDisplay:oldDisplay;
        !           134: 
        !           135: @end
        !           136: 
        !           137: @interface kmDevice (KmGraphics)
        !           138: 
        !           139: - (void)graphicPanelString:(char *)string;
        !           140: - (void)drawGraphicPanel:(GraphicPanelType)panelType;
        !           141: 
        !           142: @end
        !           143: 
        !           144: /*
        !           145:  * 'Global' variables, shared only by km.m and kmDevice.m.
        !           146:  */
        !           147: 
        !           148: extern kmDevice *kmId;                         // the kmDevice
        !           149: extern IOConsoleInfo *basicConsole;
        !           150: extern ScreenMode basicConsoleMode;                    
        !           151: extern const char *mach_title;
        !           152: 
        !           153: #endif /* DRIVER_PRIVATE */
        !           154: 
        !           155: /* end of kmDevice.h */
        !           156: 
        !           157: 

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