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Annotation of XNU/iokit/Drivers/platform/drvAppleCuda/AppleCudaHW.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:  * 18 June 1998 sdouglas
        !            68:  * Start IOKit version.
        !            69:  */
        !            70: 
        !            71: #include    "AppleVIA6522.h"
        !            72: 
        !            73: typedef struct VIARegisterAddress VIARegisterAddress;
        !            74: 
        !            75: struct VIARegisterAddress
        !            76: {   
        !            77:         volatile unsigned char*     dataB;
        !            78:         volatile unsigned char*     handshakeDataA;
        !            79:         volatile unsigned char*     dataDirectionB;
        !            80:         volatile unsigned char*     dataDirectionA;
        !            81:         volatile unsigned char*     timer1CounterLow;
        !            82:         volatile unsigned char*     timer1CounterHigh;
        !            83:         volatile unsigned char*     timer1LatchLow;
        !            84:         volatile unsigned char*     timer1LatchHigh;
        !            85:         volatile unsigned char*     timer2CounterLow;
        !            86:         volatile unsigned char*     timer2CounterHigh;
        !            87:         volatile unsigned char*     shift;
        !            88:         volatile unsigned char*     auxillaryControl;
        !            89:         volatile unsigned char*     peripheralControl;
        !            90:         volatile unsigned char*     interruptFlag;
        !            91:         volatile unsigned char*     interruptEnable;
        !            92:         volatile unsigned char*     dataA;
        !            93: };
        !            94: 
        !            95: 
        !            96: 
        !            97: //  Cuda to VIA signal definition.  They are all active low.
        !            98: 
        !            99: enum
        !           100: {
        !           101:     kCudaTransferRequestMask        = EVRB_XCVR,        // TREQ         (input) 
        !           102:     kCudaNegateTransferRequest      = EVRB_XCVR,        // TREQ
        !           103:     kCudaAssertTransferRequest      = ~EVRB_XCVR,       // /TREQ
        !           104: 
        !           105:     kCudaByteAcknowledgeMask        = EVRB_FULL,        // ByteAck      (output)
        !           106:     kCudaNegateByteAcknowledge      = EVRB_FULL,        // ByteAck
        !           107:     kCudaAssertByteAcknowledge      = ~EVRB_FULL,       // /ByteAck
        !           108:     
        !           109:     kCudaTransferInProgressMask     = EVRB_SYSES,       // TIP          (output)
        !           110:     kCudaNegateTransferInProgress   = EVRB_SYSES,       // TIP
        !           111:     kCudaAssertTransferInProgress   = ~EVRB_SYSES,      // /TIP
        !           112: 
        !           113:     kCudaTransferMode               = VAC_SRMD3,        // 
        !           114: 
        !           115:     kCudaDirectionMask              = VAC_SRMD4,        // 
        !           116:     kCudaSystemSend                 = VAC_SRMD4,        // 
        !           117:     kCudaSystemRecieve              = ~VAC_SRMD4,       // 
        !           118:     
        !           119:     kCudaInterruptMask              = VIE_SR,
        !           120:     kCudaInterruptDisable           = VIE_CLEAR | VIE_SR,
        !           121:     kCudaInterruptEnable            = VIE_SET | VIE_SR
        !           122: };
        !           123: 
        !           124: //  The bits from Cuda that determines the cause of an interrupt
        !           125: 
        !           126: enum
        !           127: {
        !           128:         kCudaInterruptStateMask     = kCudaTransferInProgressMask |
        !           129:                                       kCudaTransferRequestMask
        !           130: };
        !           131: 
        !           132: // Interrupt states.  Determined by kTransferRequest, kTransferInProgress and 
        !           133: // kCudaDirection.  The names are from the view of the system.
        !           134: 
        !           135: enum
        !           136: {
        !           137:         kCudaReceiveByte            = 0,                            // 0x00
        !           138:         kCudaReceiveLastByte        = kCudaNegateTransferRequest,   // 0x08
        !           139:         kCudaCollision              = kCudaSystemSend,              // 0x10
        !           140:         kCudaTransmitByte           = kCudaSystemSend |     
        !           141:                                       kCudaNegateTransferRequest,   // 0x18
        !           142:         kCudaUnexpectedAttention    = kCudaNegateTransferInProgress,// 0x20
        !           143:         kCudaIdleState              = kCudaNegateTransferInProgress |  
        !           144:                                       kCudaNegateTransferRequest,   // 0x28
        !           145:         kCudaExpectedAttention      = kCudaSystemSend |
        !           146:                                       kCudaNegateTransferInProgress,// 0x30
        !           147:         kCudaIllegalState           = kCudaSystemSend |
        !           148:                                       kCudaNegateTransferInProgress |
        !           149:                                       kCudaNegateTransferRequest    // 0x38
        !           150: };
        !           151: 
        !           152: enum
        !           153: {
        !           154:         kCudaSRQAssertMask          = 0x01,         // inactive device asserted SRQ
        !           155:         kCudaTimeOutMask            = 0x02,         // active device did not have data available
        !           156:         kCudaSRQErrorMask           = 0x04,         // device asserted excessive SRQ period
        !           157:         kCudaBusErrorMask           = 0x08,         // timing error in bit cell was detected
        !           158:         kCudaAutoPollMask           = 0x40,         // data is from an AutoPoll
        !           159:         kCudaResponseMask           = 0x80          // response Packet in progress
        !           160: };
        !           161: 
        !           162: #define cuda_write_data(self,theByte)  {*self->cuda_via_regs.shift = theByte; eieio(); }
        !           163: #define cuda_set_data_direction_to_input(self)  {*self->cuda_via_regs.auxillaryControl &= kCudaSystemRecieve; eieio(); }
        !           164: #define cuda_set_data_direction_to_output(self)  {*self->cuda_via_regs.auxillaryControl |= kCudaSystemSend; eieio(); }
        !           165: #define cuda_assert_transfer_in_progress(self)  {*self->cuda_via_regs.dataB &= kCudaAssertTransferInProgress; eieio(); }
        !           166: #define cuda_neg_transfer_in_progress(self)  {*self->cuda_via_regs.dataB |= kCudaNegateTransferInProgress; eieio(); }
        !           167: #define cuda_neg_tip_and_byteack(self)   {*self->cuda_via_regs.dataB |= kCudaNegateByteAcknowledge | kCudaNegateTransferInProgress; eieio(); }
        !           168: #define cuda_toggle_byte_ack(self)  {*self->cuda_via_regs.dataB ^= kCudaByteAcknowledgeMask; eieio(); }
        !           169: #define cuda_assert_byte_ack(self)   {*self->cuda_via_regs.dataB &= kCudaAssertByteAcknowledge; eieio(); }
        !           170: #define cuda_neg_byte_ack(self)  {*self->cuda_via_regs.dataB |= kCudaNegateByteAcknowledge; eieio(); }
        !           171: #define cuda_is_transfer_in_progress(self) ((*self->cuda_via_regs.dataB & kCudaTransferRequestMask) == 0 )
        !           172: #define cuda_disable_interrupt(self)  {*self->cuda_via_regs.interruptEnable = kCudaInterruptDisable; eieio(); }
        !           173: #define cuda_enable_interrupt(self)  {*self->cuda_via_regs.interruptEnable = kCudaInterruptEnable; eieio(); }
        !           174: #define cuda_get_interrupt_state(self)  (*self->cuda_via_regs.dataB & kCudaInterruptStateMask) | \
        !           175:                (*self->cuda_via_regs.auxillaryControl & kCudaDirectionMask)
        !           176: #define cuda_wait_for_transfer_request_assert(self) while ( (*self->cuda_via_regs.dataB & kCudaTransferRequestMask) != 0 ) { eieio(); } ; eieio()
        !           177: #define cuda_wait_for_transfer_request_neg(self) while ( (*self->cuda_via_regs.dataB & kCudaTransferRequestMask) == 0 ) { eieio(); } ; eieio()
        !           178: #define cuda_wait_for_interrupt(self) while ( (*self->cuda_via_regs.interruptFlag & kCudaInterruptMask) == 0 ) { eieio(); } ; eieio()

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