arch/s390/include/asm/irq.h

   1 #ifndef _ASM_IRQ_H
   2 #define _ASM_IRQ_H
   3
   4 #define EXT_INTERRUPT   0
   5 #define IO_INTERRUPT    1
   6 #define THIN_INTERRUPT  2
   7
   8 #define NR_IRQS_BASE    3
   9
  10 #define NR_IRQS NR_IRQS_BASE
  11 #define NR_IRQS_LEGACY NR_IRQS_BASE
  12
  13 /* External interruption codes */
  14 #define EXT_IRQ_INTERRUPT_KEY   0x0040
  15 #define EXT_IRQ_CLK_COMP        0x1004
  16 #define EXT_IRQ_CPU_TIMER       0x1005
  17 #define EXT_IRQ_WARNING_TRACK   0x1007
  18 #define EXT_IRQ_MALFUNC_ALERT   0x1200
  19 #define EXT_IRQ_EMERGENCY_SIG   0x1201
  20 #define EXT_IRQ_EXTERNAL_CALL   0x1202
  21 #define EXT_IRQ_TIMING_ALERT    0x1406
  22 #define EXT_IRQ_MEASURE_ALERT   0x1407
  23 #define EXT_IRQ_SERVICE_SIG     0x2401
  24 #define EXT_IRQ_CP_SERVICE      0x2603
  25 #define EXT_IRQ_IUCV            0x4000
  26
  27 #ifndef __ASSEMBLY__
  28
  29 #include <linux/hardirq.h>
  30 #include <linux/percpu.h>
  31 #include <linux/cache.h>
  32 #include <linux/types.h>
  33
  34 enum interruption_class {
  35         IRQEXT_CLK,
  36         IRQEXT_EXC,
  37         IRQEXT_EMS,
  38         IRQEXT_TMR,
  39         IRQEXT_TLA,
  40         IRQEXT_PFL,
  41         IRQEXT_DSD,
  42         IRQEXT_VRT,
  43         IRQEXT_SCP,
  44         IRQEXT_IUC,
  45         IRQEXT_CMS,
  46         IRQEXT_CMC,
  47         IRQEXT_FTP,
  48         IRQIO_CIO,
  49         IRQIO_QAI,
  50         IRQIO_DAS,
  51         IRQIO_C15,
  52         IRQIO_C70,
  53         IRQIO_TAP,
  54         IRQIO_VMR,
  55         IRQIO_LCS,
  56         IRQIO_CTC,
  57         IRQIO_APB,
  58         IRQIO_ADM,
  59         IRQIO_CSC,
  60         IRQIO_PCI,
  61         IRQIO_MSI,
  62         IRQIO_VIR,
  63         IRQIO_VAI,
  64         NMI_NMI,
  65         CPU_RST,
  66         NR_ARCH_IRQS
  67 };
  68
  69 struct irq_stat {
  70         unsigned int irqs[NR_ARCH_IRQS];
  71 };
  72
  73 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  74
  75 static __always_inline void inc_irq_stat(enum interruption_class irq)
  76 {
  77         __this_cpu_inc(irq_stat.irqs[irq]);
  78 }
  79
  80 struct ext_code {
  81         unsigned short subcode;
  82         unsigned short code;
  83 };
  84
  85 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  86
  87 int register_external_irq(u16 code, ext_int_handler_t handler);
  88 int unregister_external_irq(u16 code, ext_int_handler_t handler);
  89
  90 enum irq_subclass {
  91         IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
  92         IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
  93 };
  94
  95 #define CR0_IRQ_SUBCLASS_MASK                                     \
  96         ((1UL << (63 - 30))  /* Warning Track */                | \
  97          (1UL << (63 - 48))  /* Malfunction Alert */            | \
  98          (1UL << (63 - 49))  /* Emergency Signal */             | \
  99          (1UL << (63 - 50))  /* External Call */                | \
 100          (1UL << (63 - 52))  /* Clock Comparator */             | \
 101          (1UL << (63 - 53))  /* CPU Timer */                    | \
 102          (1UL << (63 - 54))  /* Service Signal */               | \
 103          (1UL << (63 - 57))  /* Interrupt Key */                | \
 104          (1UL << (63 - 58))  /* Measurement Alert */            | \
 105          (1UL << (63 - 59))  /* Timing Alert */                 | \
 106          (1UL << (63 - 62))) /* IUCV */
 107
 108 void irq_subclass_register(enum irq_subclass subclass);
 109 void irq_subclass_unregister(enum irq_subclass subclass);
 110
 111 #define irq_canonicalize(irq)  (irq)
 112
 113 #endif /* __ASSEMBLY__ */
 114
 115 #endif /* _ASM_IRQ_H */