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Annotation of XNU/iokit/Drivers/platform/drvAppleCuda/AppleCuda.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991  
        !            24:  *              All Rights Reserved 
        !            25:  *  
        !            26:  * Permission to use, copy, modify, and distribute this software and 
        !            27:  * its documentation for any purpose and without fee is hereby granted, 
        !            28:  * provided that the above copyright notice appears in all copies and 
        !            29:  * that both the copyright notice and this permission notice appear in 
        !            30:  * supporting documentation. 
        !            31:  *  
        !            32:  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
        !            33:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
        !            34:  * FOR A PARTICULAR PURPOSE. 
        !            35:  *  
        !            36:  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 
        !            37:  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 
        !            38:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 
        !            39:  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 
        !            40:  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 
        !            41:  * 
        !            42:  */
        !            43: /*
        !            44:  * Copyright 1996 1995 by Apple Computer, Inc. 1997 1996 1995 1994 1993 1992 1991  
        !            45:  *              All Rights Reserved 
        !            46:  *  
        !            47:  * Permission to use, copy, modify, and distribute this software and 
        !            48:  * its documentation for any purpose and without fee is hereby granted, 
        !            49:  * provided that the above copyright notice appears in all copies and 
        !            50:  * that both the copyright notice and this permission notice appear in 
        !            51:  * supporting documentation. 
        !            52:  *  
        !            53:  * APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
        !            54:  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
        !            55:  * FOR A PARTICULAR PURPOSE. 
        !            56:  *  
        !            57:  * IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 
        !            58:  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 
        !            59:  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 
        !            60:  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 
        !            61:  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 
        !            62:  */
        !            63: /*
        !            64:  * MKLINUX-1.0DR2
        !            65:  */
        !            66: 
        !            67: /* 1 April 1997 Simon Douglas:
        !            68:  * Stolen wholesale from MkLinux.
        !            69:  * Added nonblocking adb poll from interrupt level for the debugger.
        !            70:  * Acknowledge before response so polled mode can work from inside the adb handler.
        !            71:  *
        !            72:  * 18 June 1998 sdouglas
        !            73:  * Start IOKit version. Fix errors from kCudaSRQAssertMask. Use ool cmd & reply buffers,
        !            74:  * not fixed len in packet. Does queueing here.
        !            75:  *
        !            76:  * 20 Nov 1998 suurballe
        !            77:  * Port to C++
        !            78:  */
        !            79: 
        !            80: 
        !            81: #include <mach/mach_types.h>
        !            82: 
        !            83: #include <IOKit/IOService.h>
        !            84: 
        !            85: extern "C" {
        !            86: #include <pexpert/pexpert.h>
        !            87: }
        !            88: #include <IOKit/IOLocks.h>
        !            89: #include "AppleCudaCommands.h"
        !            90: #include "AppleCudaHW.h"
        !            91: #include <IOKit/adb/adb.h>
        !            92: 
        !            93: //
        !            94: //  CudaInterruptState - internal to CudaCore.c
        !            95: //
        !            96: 
        !            97: enum CudaInterruptState
        !            98: {
        !            99:     CUDA_STATE_INTERRUPT_LIMBO         = -1,       //
        !           100:     CUDA_STATE_IDLE                    = 0,        //
        !           101:     CUDA_STATE_ATTN_EXPECTED           = 1,        //
        !           102:     CUDA_STATE_TRANSMIT_EXPECTED       = 2,        //
        !           103:     CUDA_STATE_RECEIVE_EXPECTED        = 3         //
        !           104: };
        !           105: 
        !           106: typedef enum CudaInterruptState CudaInterruptState;
        !           107: 
        !           108: //
        !           109: //  CudaTransactionFlag - internal to CudaCore.c
        !           110: //
        !           111: 
        !           112: enum CudaTransactionFlag
        !           113: {
        !           114:     CUDA_TS_NO_REQUEST         = 0x0000,
        !           115:     CUDA_TS_SYNC_RESPONSE      = 0x0001,
        !           116:     CUDA_TS_ASYNC_RESPONSE     = 0x0002
        !           117: };
        !           118: 
        !           119: typedef enum CudaTransactionFlag CudaTransactionFlag;
        !           120: 
        !           121: //typedef void (* ADB_input_func)(IOService * obj_id, UInt8 * buffer, UInt32 length, UInt8 command);
        !           122: 
        !           123: class IOCudaADBController;
        !           124: class IOInterruptEventSource;
        !           125: class IOWorkLoop;
        !           126: 
        !           127: 
        !           128: class AppleCuda: public IOService
        !           129: {
        !           130: OSDeclareDefaultStructors(AppleCuda)
        !           131: 
        !           132: private:
        !           133: 
        !           134: IOService *                    cudaDevice;
        !           135: IOWorkLoop *                   workLoop;
        !           136: IOService *                    ADBid;
        !           137: IOCudaADBController *          ourADBinterface;
        !           138: ADB_callback_func              autopoll_handler;
        !           139: 
        !           140:        // number of autopoll buffers between interrupt and thread
        !           141: #define NUM_AP_BUFFERS (1<<3)
        !           142:        // max adb register size for autopoll
        !           143: #define MAX_AP_RESPONSE (8)
        !           144: 
        !           145: unsigned char                  cuda_autopoll_buffers[ NUM_AP_BUFFERS ]
        !           146:                                                     [ MAX_AP_RESPONSE ];
        !           147: 
        !           148: protected:
        !           149: 
        !           150: virtual void free( void );
        !           151: 
        !           152: public:
        !           153: 
        !           154: VIARegisterAddress             cuda_via_regs;
        !           155: bool                           cuda_polled_mode;
        !           156: IOSimpleLock *                 cuda_request_lock;
        !           157: volatile cuda_request_t *      cuda_request;           // head of todo queue
        !           158: volatile cuda_request_t *      cuda_last_request;      // tail of todo queue
        !           159: volatile CudaInterruptState    cuda_interrupt_state;
        !           160: volatile unsigned int          inIndex;
        !           161: volatile unsigned int          outIndex;
        !           162: volatile CudaTransactionFlag   cuda_transaction_state;
        !           163: cuda_packet_t                  cuda_unsolicited[ NUM_AP_BUFFERS ];
        !           164: bool                           cuda_is_header_transfer;
        !           165: int                            cuda_transfer_count;
        !           166: IOInterruptEventSource *       eventSrc;
        !           167: cuda_packet_t *                        cuda_current_response;
        !           168: bool                           cuda_is_packet_type;
        !           169: AbsoluteTime                   cuda_state_transition_delay;
        !           170: 
        !           171: bool init ( OSDictionary * properties = 0 );
        !           172: bool start ( IOService * );
        !           173: virtual IOWorkLoop *getWorkLoop() const;
        !           174: void serviceAutopolls ( void );
        !           175: void registerForADBInterrupts ( ADB_callback_func handler, IOService * caller );
        !           176: IOReturn doSyncRequest ( cuda_request_t * request );
        !           177: };
        !           178: 

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