projects / thirdparty / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| df9ee292 DH |
2 | #ifndef __ALPHA_IRQFLAGS_H |
| 3 | #define __ALPHA_IRQFLAGS_H | |
| 4 | ||
| ec221208 | 5 | #include <asm/pal.h> |
| df9ee292 DH |
6 | |
| 7 | #define IPL_MIN 0 | |
| 8 | #define IPL_SW0 1 | |
| 9 | #define IPL_SW1 2 | |
| 10 | #define IPL_DEV0 3 | |
| 11 | #define IPL_DEV1 4 | |
| 12 | #define IPL_TIMER 5 | |
| 13 | #define IPL_PERF 6 | |
| 14 | #define IPL_POWERFAIL 6 | |
| 15 | #define IPL_MCHECK 7 | |
| 16 | #define IPL_MAX 7 | |
| 17 | ||
| 18 | #ifdef CONFIG_ALPHA_BROKEN_IRQ_MASK | |
| 19 | #undef IPL_MIN | |
| 20 | #define IPL_MIN __min_ipl | |
| 21 | extern int __min_ipl; | |
| 22 | #endif | |
| 23 | ||
| 24 | #define getipl() (rdps() & 7) | |
| 25 | #define setipl(ipl) ((void) swpipl(ipl)) | |
| 26 | ||
| 27 | static inline unsigned long arch_local_save_flags(void) | |
| 28 | { | |
| 29 | return rdps(); | |
| 30 | } | |
| 31 | ||
| 32 | static inline void arch_local_irq_disable(void) | |
| 33 | { | |
| 34 | setipl(IPL_MAX); | |
| 35 | barrier(); | |
| 36 | } | |
| 37 | ||
| 38 | static inline unsigned long arch_local_irq_save(void) | |
| 39 | { | |
| 40 | unsigned long flags = swpipl(IPL_MAX); | |
| 41 | barrier(); | |
| 42 | return flags; | |
| 43 | } | |
| 44 | ||
| 45 | static inline void arch_local_irq_enable(void) | |
| 46 | { | |
| 47 | barrier(); | |
| 48 | setipl(IPL_MIN); | |
| 49 | } | |
| 50 | ||
| 51 | static inline void arch_local_irq_restore(unsigned long flags) | |
| 52 | { | |
| 53 | barrier(); | |
| 54 | setipl(flags); | |
| 55 | barrier(); | |
| 56 | } | |
| 57 | ||
| 58 | static inline bool arch_irqs_disabled_flags(unsigned long flags) | |
| 59 | { | |
| 60 | return flags == IPL_MAX; | |
| 61 | } | |
| 62 | ||
| 63 | static inline bool arch_irqs_disabled(void) | |
| 64 | { | |
| 65 | return arch_irqs_disabled_flags(getipl()); | |
| 66 | } | |
| 67 | ||
| 68 | #endif /* __ALPHA_IRQFLAGS_H */ |