nuttx/include/nuttx/b2c.h
Guiding Li 8b92305265 This commit brings in the drivers needed to support OpenAMP. These changes were ported from https://github.com/FishsemiCode/nuttx. The current state: Most drivers do now compile but are not yet verfied.
This port was effort of a number of people, I rather arbitrarily gave authorship to Guiding Li because he has the largest number of fundamental quashed commits from the Xiamoi repository.

Squashed commit of the following:

Author: Xiang Xiao <xiaoxiang@pinecone.net>
    include/nuttx/b2c.h and libx/libc/string:  Add non-standard string functions to deal with cases where there are more than 8-bits in a type char.

Author: Gregory Nutt <gnutt@nuttx.org>
    Fix several build issues/missing definitiona needed for OpenAMP build in drivers/.
    Add OpenAMP code has been reviewed and ran through tools/nxstyle (with all reports accounted for).

Author: Xiang Xiao <xiaoxiang@xiaomi.com>
    tools/:  Fix the minor issue in Makefile

Author: Gregory Nutt <gnutt@nuttx.org>
    drivers/rptun/rptun.c:  Review for coding standard.  Run against tools/nxstyle.
    tools/LibTargets.mk:  Fix some TABs that were turned into spaces by a copy-paste.
    fs/hostfs:  Add configure and build support for hostfs RPC.
    drivers/timer:  Add configure and build support for syslog RTC.
    drivers/syslog:  Add configure and build support for syslog RPC.
    drivers/serial:  Add configure and build support for serial RPC.
    Kconfig, tools/*.mk. openamp/:  Add basic OpenAMP build support.
    drivers/rptun:  Add configure and build support for OpenAMP tunnel drivers.
    drivers/net:  Update Make.defs and Kconfig for OpenSDA support.
    Remove drivers/clk/clk-rpmsg.c drivers/power/rpmsg_regulator.c.  These depend on upstreaming support for a new subsystem based on the clk/regulator is model from Linux.  Removed because we want to separate the activities.  We will just try to get the basic OpenAMP support in place for now.
    Remove drivers/misc/misc_rpmsg.c and include/nuttx/misc/misc_rpmsg.h.  These are specific to the Xiaomi application.

Author: zhuyanlin <zhuyanlin@pinecone.net>
    This commit brings in the OpenAMP OS driver/RPC components from https://github.com/FishsemiCode/nuttx.  Initial commit is source files only.  Additional changes to Kconfig and Make.defs files still needed.

Author: Jianli Dong <dongjianli@pinecone.net>
    This commit brings in the OpenAMP OS driver/RPC components from https://github.com/FishsemiCode/nuttx.  Initial commit is source files only.  Additional changes to Kconfig and Make.defs files still needed.

Author: Guiding Li <liguiding@pinecone.net>
    This commit brings in the OpenAMP OS driver/RPC components from https://github.com/FishsemiCode/nuttx.  Initial commit is source files only.  Additional changes to Kconfig and Make.defs files still needed.
2019-11-02 11:30:33 -06:00

125 lines
4.4 KiB
C

/****************************************************************************
* include/nuttx/b2c.h
*
* Copyright (C) 2019 Pinecone Inc. All rights reserved.
* Author: Xiang Xiao <xiaoxiang@xiaomi.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_B2C_H
#define __INCLUDE_NUTTX_B2C_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <string.h>
#include <limits.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#if CHAR_BIT == 8
# define CHAR_BYTE 1
# define CHAR_SHIFT 0
#elif CHAR_BIT == 16
# define CHAR_BYTE 2
# define CHAR_SHIFT 1
#elif CHAR_BIT == 32
# define CHAR_BYTE 4
# define CHAR_SHIFT 2
#else
# error unsupport CHAR_BIT value
#endif
/* Macros convert between chars and bytes */
#define B2C(x) (((x) + CHAR_BYTE - 1) >> CHAR_SHIFT)
#define C2B(x) ((x) << CHAR_SHIFT)
#define B2C_OFF(x) ((x) >> CHAR_SHIFT)
#define C2B_OFF(x) ((x) << CHAR_SHIFT)
#define B2C_REM(x) ((x) - C2B_OFF(B2C_OFF(x)))
#define B2C_SHIFT(x) ((x) - CHAR_SHIFT)
#define C2B_SHIFT(x) ((x) + CHAR_SHIFT)
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* Functions convert between chars and bytes */
#if CHAR_BIT != 8
size_t bstrnlen(FAR const char *src, size_t maxlen);
FAR char *ancstr2bstr(FAR const char *src, size_t maxlen);
FAR char *anbstr2cstr(FAR const char *src, size_t maxlen);
void ncstr2bstr(FAR char *dst, FAR const char *src, size_t maxlen);
void nbstr2cstr(FAR char *dst, FAR const char *src, size_t maxlen);
void cmem2bmem(FAR void *dst, size_t rem, FAR const void *src, size_t len);
void bmem2cmem(FAR void *dst, FAR const void *src, size_t rem, size_t len);
# define cstr2bstr(dst, src) ncstr2bstr(dst, src, SIZE_MAX)
# define bstr2cstr(dst, src) nbstr2cstr(dst, src, SIZE_MAX)
#else
# define bstrnlen(src, maxlen) strnlen(src, maxlen)
# define ancstr2bstr(src, maxlen) strndup(src, maxlen)
# define anbstr2cstr(src, maxlen) strndup(src, maxlen)
# define ncstr2bstr(dst, src, maxlen) strncpy(dst, src, maxlen)
# define nbstr2cstr(dst, src, maxlen) strncpy(dst, src, maxlen)
# define cmem2bmem(dst, rem, src, len) memcpy((FAR char *)(dst) + rem, src, len)
# define bmem2cmem(dst, src, rem, len) memcpy(dst, (FAR char *)(src) + rem, len)
# define cstr2bstr(dst, src) strcpy(dst, src)
# define bstr2cstr(dst, src) strcpy(dst, src)
#endif
#define bstrlen(src) bstrnlen(src, SIZE_MAX)
#define acstr2bstr(src) ancstr2bstr(src, SIZE_MAX)
#define abstr2cstr(src) anbstr2cstr(src, SIZE_MAX)
#endif /* __INCLUDE_NUTTX_B2C_H */