1 /* SPDX-License-Identifier: GPL-2.0-only */ <<
2 /* 1 /*
3 * Copyright (C) 2016-2017 Synopsys, Inc. (www 2 * Copyright (C) 2016-2017 Synopsys, Inc. (www.synopsys.com)
>> 3 *
>> 4 * This program is free software; you can redistribute it and/or modify
>> 5 * it under the terms of the GNU General Public License version 2 as
>> 6 * published by the Free Software Foundation.
>> 7 *
4 */ 8 */
5 9
6 #ifndef __SOC_ARC_AUX_H__ 10 #ifndef __SOC_ARC_AUX_H__
7 #define __SOC_ARC_AUX_H__ 11 #define __SOC_ARC_AUX_H__
8 12
9 #ifdef CONFIG_ARC 13 #ifdef CONFIG_ARC
10 14
11 #define read_aux_reg(r) __builtin_arc_ 15 #define read_aux_reg(r) __builtin_arc_lr(r)
12 16
13 /* gcc builtin sr needs reg param to be long i 17 /* gcc builtin sr needs reg param to be long immediate */
14 #define write_aux_reg(r, v) __builtin_arc_ 18 #define write_aux_reg(r, v) __builtin_arc_sr((unsigned int)(v), r)
15 19
16 #else /* !CONFIG_ARC */ 20 #else /* !CONFIG_ARC */
17 21
18 static inline int read_aux_reg(u32 r) 22 static inline int read_aux_reg(u32 r)
19 { 23 {
20 return 0; 24 return 0;
21 } 25 }
22 26
23 /* 27 /*
24 * function helps elide unused variable warnin 28 * function helps elide unused variable warning
25 * see: https://lists.infradead.org/pipermail/ !! 29 * see: http://lists.infradead.org/pipermail/linux-snps-arc/2016-November/001748.html
26 */ 30 */
27 static inline void write_aux_reg(u32 r, u32 v) 31 static inline void write_aux_reg(u32 r, u32 v)
28 { 32 {
29 ; 33 ;
30 } 34 }
31 35
32 #endif 36 #endif
33 37
34 #define READ_BCR(reg, into) 38 #define READ_BCR(reg, into) \
35 { 39 { \
36 unsigned int tmp; 40 unsigned int tmp; \
37 tmp = read_aux_reg(reg); 41 tmp = read_aux_reg(reg); \
38 if (sizeof(tmp) == sizeof(into)) { 42 if (sizeof(tmp) == sizeof(into)) { \
39 into = *((typeof(into) *)&tmp) 43 into = *((typeof(into) *)&tmp); \
40 } else { 44 } else { \
41 extern void bogus_undefined(vo 45 extern void bogus_undefined(void); \
42 bogus_undefined(); 46 bogus_undefined(); \
43 } 47 } \
44 } 48 }
45 49
46 #define WRITE_AUX(reg, into) 50 #define WRITE_AUX(reg, into) \
47 { 51 { \
48 unsigned int tmp; 52 unsigned int tmp; \
49 if (sizeof(tmp) == sizeof(into)) { 53 if (sizeof(tmp) == sizeof(into)) { \
50 tmp = (*(unsigned int *)&(into 54 tmp = (*(unsigned int *)&(into)); \
51 write_aux_reg(reg, tmp); 55 write_aux_reg(reg, tmp); \
52 } else { 56 } else { \
53 extern void bogus_undefined(vo 57 extern void bogus_undefined(void); \
54 bogus_undefined(); 58 bogus_undefined(); \
55 } 59 } \
56 } 60 }
57 61
58 62
59 #endif 63 #endif
60 64
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