arch/s390/include/asm/irq.h

   1 #ifndef _ASM_IRQ_H
   2 #define _ASM_IRQ_H
   3
   4 #define EXT_INTERRUPT   1
   5 #define IO_INTERRUPT    2
   6 #define THIN_INTERRUPT  3
   7
   8 #define NR_IRQS_BASE    4
   9
  10 #ifdef CONFIG_PCI_NR_MSI
  11 # define NR_IRQS        (NR_IRQS_BASE + CONFIG_PCI_NR_MSI)
  12 #else
  13 # define NR_IRQS        NR_IRQS_BASE
  14 #endif
  15
  16 /* This number is used when no interrupt has been assigned */
  17 #define NO_IRQ          0
  18
  19 /* External interruption codes */
  20 #define EXT_IRQ_INTERRUPT_KEY   0x0040
  21 #define EXT_IRQ_CLK_COMP        0x1004
  22 #define EXT_IRQ_CPU_TIMER       0x1005
  23 #define EXT_IRQ_WARNING_TRACK   0x1007
  24 #define EXT_IRQ_MALFUNC_ALERT   0x1200
  25 #define EXT_IRQ_EMERGENCY_SIG   0x1201
  26 #define EXT_IRQ_EXTERNAL_CALL   0x1202
  27 #define EXT_IRQ_TIMING_ALERT    0x1406
  28 #define EXT_IRQ_MEASURE_ALERT   0x1407
  29 #define EXT_IRQ_SERVICE_SIG     0x2401
  30 #define EXT_IRQ_CP_SERVICE      0x2603
  31 #define EXT_IRQ_IUCV            0x4000
  32
  33 #ifndef __ASSEMBLY__
  34
  35 #include <linux/hardirq.h>
  36 #include <linux/percpu.h>
  37 #include <linux/cache.h>
  38 #include <linux/types.h>
  39
  40 enum interruption_class {
  41         IRQEXT_CLK,
  42         IRQEXT_EXC,
  43         IRQEXT_EMS,
  44         IRQEXT_TMR,
  45         IRQEXT_TLA,
  46         IRQEXT_PFL,
  47         IRQEXT_DSD,
  48         IRQEXT_VRT,
  49         IRQEXT_SCP,
  50         IRQEXT_IUC,
  51         IRQEXT_CMS,
  52         IRQEXT_CMC,
  53         IRQEXT_CMR,
  54         IRQIO_CIO,
  55         IRQIO_QAI,
  56         IRQIO_DAS,
  57         IRQIO_C15,
  58         IRQIO_C70,
  59         IRQIO_TAP,
  60         IRQIO_VMR,
  61         IRQIO_LCS,
  62         IRQIO_CLW,
  63         IRQIO_CTC,
  64         IRQIO_APB,
  65         IRQIO_ADM,
  66         IRQIO_CSC,
  67         IRQIO_PCI,
  68         IRQIO_MSI,
  69         IRQIO_VIR,
  70         IRQIO_VAI,
  71         NMI_NMI,
  72         CPU_RST,
  73         NR_ARCH_IRQS
  74 };
  75
  76 struct irq_stat {
  77         unsigned int irqs[NR_ARCH_IRQS];
  78 };
  79
  80 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  81
  82 static __always_inline void inc_irq_stat(enum interruption_class irq)
  83 {
  84         __get_cpu_var(irq_stat).irqs[irq]++;
  85 }
  86
  87 struct ext_code {
  88         unsigned short subcode;
  89         unsigned short code;
  90 };
  91
  92 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  93
  94 int register_external_irq(u16 code, ext_int_handler_t handler);
  95 int unregister_external_irq(u16 code, ext_int_handler_t handler);
  96
  97 enum irq_subclass {
  98         IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
  99         IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
 100 };
 101
 102 void irq_subclass_register(enum irq_subclass subclass);
 103 void irq_subclass_unregister(enum irq_subclass subclass);
 104
 105 #define irq_canonicalize(irq)  (irq)
 106
 107 #endif /* __ASSEMBLY__ */
 108
 109 #endif /* _ASM_IRQ_H */