cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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malidp_utils.h (968B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
      4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
      5 *
      6 */
      7#ifndef _MALIDP_UTILS_
      8#define _MALIDP_UTILS_
      9
     10#include <linux/delay.h>
     11#include <linux/errno.h>
     12
     13#define has_bit(nr, mask)	(BIT(nr) & (mask))
     14#define has_bits(bits, mask)	(((bits) & (mask)) == (bits))
     15
     16#define dp_wait_cond(__cond, __tries, __min_range, __max_range)	\
     17({							\
     18	int num_tries = __tries;			\
     19	while (!__cond && (num_tries > 0)) {		\
     20		usleep_range(__min_range, __max_range);	\
     21		num_tries--;				\
     22	}						\
     23	(__cond) ? 0 : -ETIMEDOUT;			\
     24})
     25
     26/* the restriction of range is [start, end] */
     27struct malidp_range {
     28	u32 start;
     29	u32 end;
     30};
     31
     32static inline void set_range(struct malidp_range *rg, u32 start, u32 end)
     33{
     34	rg->start = start;
     35	rg->end   = end;
     36}
     37
     38static inline bool in_range(struct malidp_range *rg, u32 v)
     39{
     40	return (v >= rg->start) && (v <= rg->end);
     41}
     42
     43#endif /* _MALIDP_UTILS_ */