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/* 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: https://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