projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| c33a605d VG |
1 | /* |
| 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 | * | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef __SOC_ARC_AUX_H__ | |
| 11 | #define __SOC_ARC_AUX_H__ | |
| 12 | ||
| 13 | #ifdef CONFIG_ARC | |
| 14 | ||
| 15 | #define read_aux_reg(r) __builtin_arc_lr(r) | |
| 16 | ||
| 17 | /* gcc builtin sr needs reg param to be long immediate */ | |
| 18 | #define write_aux_reg(r, v) __builtin_arc_sr((unsigned int)(v), r) | |
| 19 | ||
| 20 | #else /* !CONFIG_ARC */ | |
| 21 | ||
| 22 | static inline int read_aux_reg(u32 r) | |
| 23 | { | |
| 24 | return 0; | |
| 25 | } | |
| 26 | ||
| 27 | /* | |
| 28 | * function helps elide unused variable warning | |
| 29 | * see: http://lists.infradead.org/pipermail/linux-snps-arc/2016-November/001748.html | |
| 30 | */ | |
| 31 | static inline void write_aux_reg(u32 r, u32 v) | |
| 32 | { | |
| 33 | ; | |
| 34 | } | |
| 35 | ||
| 36 | #endif | |
| 37 | ||
| 38 | #define READ_BCR(reg, into) \ | |
| 39 | { \ | |
| 40 | unsigned int tmp; \ | |
| 41 | tmp = read_aux_reg(reg); \ | |
| 42 | if (sizeof(tmp) == sizeof(into)) { \ | |
| 43 | into = *((typeof(into) *)&tmp); \ | |
| 44 | } else { \ | |
| 45 | extern void bogus_undefined(void); \ | |
| 46 | bogus_undefined(); \ | |
| 47 | } \ | |
| 48 | } | |
| 49 | ||
| 50 | #define WRITE_AUX(reg, into) \ | |
| 51 | { \ | |
| 52 | unsigned int tmp; \ | |
| 53 | if (sizeof(tmp) == sizeof(into)) { \ | |
| 54 | tmp = (*(unsigned int *)&(into)); \ | |
| 55 | write_aux_reg(reg, tmp); \ | |
| 56 | } else { \ | |
| 57 | extern void bogus_undefined(void); \ | |
| 58 | bogus_undefined(); \ | |
| 59 | } \ | |
| 60 | } | |
| 61 | ||
| 62 | ||
| 63 | #endif |