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Annotation of kernel/bsd/dev/i386/dma.h, revision 1.1.1.1

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: /*
                     26:  * Copyright (c) 1992 NeXT Computer, Inc.
                     27:  *
                     28:  * Dummy file for now.
                     29:  *
                     30:  * HISTORY
                     31:  *
                     32:  * 9 July 1992 ? at NeXT
                     33:  *     Created.
                     34:  */
                     35: 
                     36: /*     @(#)dma.h       1.0     08/12/87        (c) 1987 NeXT   */
                     37: 
                     38: /* 
                     39:  **********************************************************************
                     40:  * HISTORY
                     41:  *
                     42:  * 26-Sep-89  John Seamons (jks) at NeXT
                     43:  *     Made dd_csr in struct dma_dev an int (and changed the corresponding
                     44:  *     register #defines) because this register responds as a 32-bit device
                     45:  *     and therefore needs to be accessed this way to work on the 68040.
                     46:  *
                     47:  * 12-Apr-88  John Seamons (jks) at NeXT
                     48:  *     Changes to support DMA chip 313.
                     49:  *
                     50:  * 12-Aug-87  Mike DeMoney (mike) at NeXT
                     51:  *     Created.
                     52:  *
                     53:  **********************************************************************
                     54:  */ 
                     55: 
                     56: /*
                     57:  * dma.h -- description of NeXT dma structures
                     58:  */
                     59:  
                     60: #if    KERNEL_PRIVATE
                     61: 
                     62: #ifndef        _I386_DEV_DMA_
                     63: #define        _I386_DEV_DMA_
                     64: 
                     65: #define        DMA_BEGINALIGNMENT      1 
                     66: #define        DMA_ENDALIGNMENT        1
                     67: 
                     68: #define        DMA_BEGINALIGN(type, addr)      \
                     69:        ((type)(((unsigned)(addr)+DMA_BEGINALIGNMENT-1) \
                     70:                &~(DMA_BEGINALIGNMENT-1)))
                     71: 
                     72: #define        DMA_ENDALIGN(type, addr)        \
                     73:        ((type)(((unsigned)(addr)+DMA_ENDALIGNMENT-1) \
                     74:                &~(DMA_ENDALIGNMENT-1)))
                     75: #define        DMA_BEGINALIGNED(addr)  (((unsigned)(addr)&(DMA_BEGINALIGNMENT-1))==0)
                     76: #define        DMA_ENDALIGNED(addr)    (((unsigned)(addr)&(DMA_ENDALIGNMENT-1))==0)
                     77: #define        DMA_LONGALIGNED(addr)   (((unsigned)(addr)&(DMA_LONGALIGNMENT-1))==0)
                     78: 
                     79: #endif /* _I386_DEV_DMA_ */
                     80: 
                     81: #endif

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