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