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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // include/sys/ioccom.h
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4 //
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5 //
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6 //
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7 //==========================================================================
2729
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8 // ####BSDALTCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // Portions of this software may have been derived from OpenBSD
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11 // or other sources, and if so are covered by the appropriate copyright
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12 // and license included herein.
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13 // -------------------------------------------
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14 // ####BSDALTCOPYRIGHTEND####
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15 //==========================================================================
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16 //#####DESCRIPTIONBEGIN####
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17 //
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18 // Author(s): gthomas
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19 // Contributors: gthomas
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20 // Date: 2000-01-10
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21 // Purpose:
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22 // Description:
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23 //
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24 //
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25 //####DESCRIPTIONEND####
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26 //
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27 //==========================================================================
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30 /* $OpenBSD: ioccom.h,v 1.2 1996/03/03 12:11:49 niklas Exp $ */
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31 /* $NetBSD: ioccom.h,v 1.4 1994/10/30 21:49:56 cgd Exp $ */
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32
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33 /*-
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34 * Copyright (c) 1982, 1986, 1990, 1993, 1994
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35 * The Regents of the University of California. All rights reserved.
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36 *
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37 * Redistribution and use in source and binary forms, with or without
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38 * modification, are permitted provided that the following conditions
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39 * are met:
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40 * 1. Redistributions of source code must retain the above copyright
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41 * notice, this list of conditions and the following disclaimer.
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42 * 2. Redistributions in binary form must reproduce the above copyright
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43 * notice, this list of conditions and the following disclaimer in the
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44 * documentation and/or other materials provided with the distribution.
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45 * 3. All advertising materials mentioning features or use of this software
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46 * must display the following acknowledgement:
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47 * This product includes software developed by the University of
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48 * California, Berkeley and its contributors.
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49 * 4. Neither the name of the University nor the names of its contributors
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50 * may be used to endorse or promote products derived from this software
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51 * without specific prior written permission.
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52 *
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53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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63 * SUCH DAMAGE.
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64 *
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65 * @(#)ioccom.h 8.2 (Berkeley) 3/28/94
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66 */
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67
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68 #ifndef _SYS_IOCCOM_H_
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69 #define _SYS_IOCCOM_H_
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70
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71 /*
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72 * Ioctl's have the command encoded in the lower word, and the size of
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73 * any in or out parameters in the upper word. The high 3 bits of the
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74 * upper word are used to encode the in/out status of the parameter.
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75 */
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76 #define IOCPARM_MASK 0x1fff /* parameter length, at most 13 bits */
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77 #define IOCPARM_LEN(x) (((x) >> 16) & IOCPARM_MASK)
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78 #define IOCBASECMD(x) ((x) & ~(IOCPARM_MASK << 16))
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79 #define IOCGROUP(x) (((x) >> 8) & 0xff)
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80
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81 #ifndef __ECOS
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82 #define IOCPARM_MAX NBPG /* max size of ioctl args, mult. of NBPG */
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83 #endif
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84 /* no parameters */
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85 #define IOC_VOID (unsigned long)0x20000000
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86 /* copy parameters out */
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87 #define IOC_OUT (unsigned long)0x40000000
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88 /* copy parameters in */
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89 #define IOC_IN (unsigned long)0x80000000
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90 /* copy paramters in and out */
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91 #define IOC_INOUT (IOC_IN|IOC_OUT)
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92 /* mask for IN/OUT/VOID */
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93 #define IOC_DIRMASK (unsigned long)0xe0000000
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94
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95 #define _IOC(inout,group,num,len) \
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96 (inout | ((len & IOCPARM_MASK) << 16) | ((group) << 8) | (num))
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97 #define _IO(g,n) _IOC(IOC_VOID, (g), (n), 0)
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98 #define _IOR(g,n,t) _IOC(IOC_OUT, (g), (n), sizeof(t))
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99 #define _IOW(g,n,t) _IOC(IOC_IN, (g), (n), sizeof(t))
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100 /* this should be _IORW, but stdio got there first */
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101 #define _IOWR(g,n,t) _IOC(IOC_INOUT, (g), (n), sizeof(t))
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102
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103 #endif /* !_SYS_IOCCOM_H_ */