arch/alpha/include/asm/irqflags.h

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