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_for_each_set_bit(bit, mask) \
17 	for_each_set_bit((bit), ((unsigned long *)&(mask)), sizeof(mask) * 8)
18 
19 #define dp_wait_cond(__cond, __tries, __min_range, __max_range)	\
20 ({							\
21 	int num_tries = __tries;			\
22 	while (!__cond && (num_tries > 0)) {		\
23 		usleep_range(__min_range, __max_range);	\
24 		num_tries--;				\
25 	}						\
26 	(__cond) ? 0 : -ETIMEDOUT;			\
27 })
28 
29 /* the restriction of range is [start, end] */
30 struct malidp_range {
31 	u32 start;
32 	u32 end;
33 };
34 
35 static inline void set_range(struct malidp_range *rg, u32 start, u32 end)
36 {
37 	rg->start = start;
38 	rg->end   = end;
39 }
40 
41 static inline bool in_range(struct malidp_range *rg, u32 v)
42 {
43 	return (v >= rg->start) && (v <= rg->end);
44 }
45 
46 #endif /* _MALIDP_UTILS_ */
47