linux/include/soc/arc/aux.h
Thomas Gleixner d2912cb15b treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:55 +02:00

60 lines
1.2 KiB
C

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2016-2017 Synopsys, Inc. (www.synopsys.com)
*/
#ifndef __SOC_ARC_AUX_H__
#define __SOC_ARC_AUX_H__
#ifdef CONFIG_ARC
#define read_aux_reg(r) __builtin_arc_lr(r)
/* gcc builtin sr needs reg param to be long immediate */
#define write_aux_reg(r, v) __builtin_arc_sr((unsigned int)(v), r)
#else /* !CONFIG_ARC */
static inline int read_aux_reg(u32 r)
{
return 0;
}
/*
* function helps elide unused variable warning
* see: http://lists.infradead.org/pipermail/linux-snps-arc/2016-November/001748.html
*/
static inline void write_aux_reg(u32 r, u32 v)
{
;
}
#endif
#define READ_BCR(reg, into) \
{ \
unsigned int tmp; \
tmp = read_aux_reg(reg); \
if (sizeof(tmp) == sizeof(into)) { \
into = *((typeof(into) *)&tmp); \
} else { \
extern void bogus_undefined(void); \
bogus_undefined(); \
} \
}
#define WRITE_AUX(reg, into) \
{ \
unsigned int tmp; \
if (sizeof(tmp) == sizeof(into)) { \
tmp = (*(unsigned int *)&(into)); \
write_aux_reg(reg, tmp); \
} else { \
extern void bogus_undefined(void); \
bogus_undefined(); \
} \
}
#endif