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162 lines
5.5 KiB
C
162 lines
5.5 KiB
C
/*HEADER*********************************************************************
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*
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* Copyright (c) 2008 Freescale Semiconductor;
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* All Rights Reserved
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*
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* Copyright (c) 2004-2008 Embedded Access Inc.;
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* All Rights Reserved
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*
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***************************************************************************
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*
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* THIS SOFTWARE IS PROVIDED BY FREESCALE "AS IS" AND ANY EXPRESSED OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL FREESCALE OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************
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*
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* $FileName: ioctl.h$
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* $Version : 3.8.14.0$
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* $Date : Sep-8-2011$
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*
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* Comments:
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*
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* This file defines macros for IOCTL commands numbering.
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*
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*END************************************************************************/
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#ifndef __ioctl_h__
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#define __ioctl_h__
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/* ioctl command encoding: 32 bits total, command in lower 16 bits,
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* size of the parameter structure in the lower 14 bits of the
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* upper 16 bits.
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* Encoding the size of the parameter structure in the ioctl request
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* is useful for catching programs compiled with old versions
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* and to avoid overwriting user space outside the user buffer area.
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* The highest 2 bits are reserved for indicating the ``access mode''.
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* NOTE: This limits the max parameter size to 16kB -1 !
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*/
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/*
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* The following is for compatibility across the various Linux
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* platforms. The generic ioctl numbering scheme doesn't really enforce
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* a type field. De facto, however, the top 8 bits of the lower 16
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* bits are indeed used as a type field, so we might just as well make
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* this explicit here. Please be sure to use the decoding macros
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* below from now on.
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*/
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#define _IOC_NRBITS 8
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#define _IOC_TYPEBITS 8
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/*
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* Let any architecture override either of the following before
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* including this file.
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*/
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#ifndef _IOC_SIZEBITS
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# define _IOC_SIZEBITS 14
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#endif
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#ifndef _IOC_DIRBITS
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# define _IOC_DIRBITS 2
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#endif
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#define _IOC_NRMASK ((1 << _IOC_NRBITS)-1)
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#define _IOC_TYPEMASK ((1 << _IOC_TYPEBITS)-1)
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#define _IOC_SIZEMASK ((1 << _IOC_SIZEBITS)-1)
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#define _IOC_DIRMASK ((1 << _IOC_DIRBITS)-1)
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#define _IOC_NRSHIFT 0
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#define _IOC_TYPESHIFT (_IOC_NRSHIFT+_IOC_NRBITS)
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#define _IOC_SIZESHIFT (_IOC_TYPESHIFT+_IOC_TYPEBITS)
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#define _IOC_DIRSHIFT (_IOC_SIZESHIFT+_IOC_SIZEBITS)
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/*
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* Direction bits, which any architecture can choose to override
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* before including this file.
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*/
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#ifndef _IOC_NONE
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# define _IOC_NONE 0U
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#endif
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#ifndef _IOC_WRITE
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# define _IOC_WRITE 1U
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#endif
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#ifndef _IOC_READ
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# define _IOC_READ 2U
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#endif
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#define _IOC(dir,type,nr,size) \
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(((dir) << _IOC_DIRSHIFT) | \
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((type) << _IOC_TYPESHIFT) | \
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((nr) << _IOC_NRSHIFT) | \
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((size) << _IOC_SIZESHIFT))
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#ifdef __KERNEL__
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/* provoke compile error for invalid uses of size argument */
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extern unsigned int __invalid_size_argument_for_IOC;
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#define _IOC_TYPECHECK(t) \
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((sizeof(t) == sizeof(t[1]) && \
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sizeof(t) < (1 << _IOC_SIZEBITS)) ? \
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sizeof(t) : __invalid_size_argument_for_IOC)
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#else
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#define _IOC_TYPECHECK(t) (sizeof(t))
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#endif
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/* used to create numbers */
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#define _IO(type,nr) _IOC(_IOC_NONE,(type),(nr),0)
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#define _IOR(type,nr,size) _IOC(_IOC_READ,(type),(nr),(_IOC_TYPECHECK(size)))
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#define _IOW(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
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#define _IOWR(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),(_IOC_TYPECHECK(size)))
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#define _IOR_BAD(type,nr,size) _IOC(_IOC_READ,(type),(nr),sizeof(size))
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#define _IOW_BAD(type,nr,size) _IOC(_IOC_WRITE,(type),(nr),sizeof(size))
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#define _IOWR_BAD(type,nr,size) _IOC(_IOC_READ|_IOC_WRITE,(type),(nr),sizeof(size))
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/* used to decode ioctl numbers.. */
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#define _IOC_DIR(nr) (((nr) >> _IOC_DIRSHIFT) & _IOC_DIRMASK)
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#define _IOC_TYPE(nr) (((nr) >> _IOC_TYPESHIFT) & _IOC_TYPEMASK)
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#define _IOC_NR(nr) (((nr) >> _IOC_NRSHIFT) & _IOC_NRMASK)
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#define _IOC_SIZE(nr) (((nr) >> _IOC_SIZESHIFT) & _IOC_SIZEMASK)
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/*
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* Device types used in INCTL encoding
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*/
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#define IO_TYPE_MQX 0x00
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#define IO_TYPE_MFS 0x01
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#define IO_TYPE_FLASH 0x02
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#define IO_TYPE_GPIO 0x03
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#define IO_TYPE_I2C 0x04
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#define IO_TYPE_MEM 0x05
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#define IO_TYPE_NVRAM 0x06
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#define IO_TYPE_PCB 0x07
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#define IO_TYPE_APCCARD 0x08
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#define IO_TYPE_PCCARD 0x09
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#define IO_TYPE_PCFLASH 0x0A
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#define IO_TYPE_PIPE 0x0B
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#define IO_TYPE_QSPI 0x0C
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#define IO_TYPE_SERIAL 0x0D
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#define IO_TYPE_SPI 0x0E
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#define IO_TYPE_USBMFS 0x0F
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#define IO_TYPE_TFS 0x10
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#define IO_TYPE_ADC 0x11
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#define IO_TYPE_NANDFLASH 0x12
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#define IO_TYPE_ESDHC 0x13
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#define IO_TYPE_TCHRES 0x14
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#define IO_TYPE_SDIO 0x15
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#define IO_TYPE_USB_DCD 0x16
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#define IO_TYPE_IODEBUG 0x17
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#endif /* __ioctl_h__ */
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