arch/s390/include/asm/irq.h

   1 #ifndef _ASM_IRQ_H
   2 #define _ASM_IRQ_H
   3
   4 #include <linux/hardirq.h>
   5 #include <linux/percpu.h>
   6 #include <linux/cache.h>
   7 #include <linux/types.h>
   8
   9 enum interruption_main_class {
  10         EXTERNAL_INTERRUPT,
  11         IO_INTERRUPT,
  12         NR_IRQS
  13 };
  14
  15 enum interruption_class {
  16         IRQEXT_CLK,
  17         IRQEXT_EXC,
  18         IRQEXT_EMS,
  19         IRQEXT_TMR,
  20         IRQEXT_TLA,
  21         IRQEXT_PFL,
  22         IRQEXT_DSD,
  23         IRQEXT_VRT,
  24         IRQEXT_SCP,
  25         IRQEXT_IUC,
  26         IRQEXT_CMS,
  27         IRQEXT_CMC,
  28         IRQEXT_CMR,
  29         IRQIO_CIO,
  30         IRQIO_QAI,
  31         IRQIO_DAS,
  32         IRQIO_C15,
  33         IRQIO_C70,
  34         IRQIO_TAP,
  35         IRQIO_VMR,
  36         IRQIO_LCS,
  37         IRQIO_CLW,
  38         IRQIO_CTC,
  39         IRQIO_APB,
  40         IRQIO_ADM,
  41         IRQIO_CSC,
  42         IRQIO_PCI,
  43         IRQIO_MSI,
  44         IRQIO_VIR,
  45         NMI_NMI,
  46         CPU_RST,
  47         NR_ARCH_IRQS
  48 };
  49
  50 struct irq_stat {
  51         unsigned int irqs[NR_ARCH_IRQS];
  52 };
  53
  54 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  55
  56 static __always_inline void inc_irq_stat(enum interruption_class irq)
  57 {
  58         __get_cpu_var(irq_stat).irqs[irq]++;
  59 }
  60
  61 struct ext_code {
  62         unsigned short subcode;
  63         unsigned short code;
  64 };
  65
  66 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  67
  68 int register_external_interrupt(u16 code, ext_int_handler_t handler);
  69 int unregister_external_interrupt(u16 code, ext_int_handler_t handler);
  70 void service_subclass_irq_register(void);
  71 void service_subclass_irq_unregister(void);
  72 void measurement_alert_subclass_register(void);
  73 void measurement_alert_subclass_unregister(void);
  74
  75 #ifdef CONFIG_LOCKDEP
  76 #  define disable_irq_nosync_lockdep(irq)       disable_irq_nosync(irq)
  77 #  define disable_irq_nosync_lockdep_irqsave(irq, flags) \
  78                                                 disable_irq_nosync(irq)
  79 #  define disable_irq_lockdep(irq)              disable_irq(irq)
  80 #  define enable_irq_lockdep(irq)               enable_irq(irq)
  81 #  define enable_irq_lockdep_irqrestore(irq, flags) \
  82                                                 enable_irq(irq)
  83 #endif
  84
  85 #endif /* _ASM_IRQ_H */