kernel/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 #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 /* External interruption codes */
  17 #define EXT_IRQ_INTERRUPT_KEY   0x0040
  18 #define EXT_IRQ_CLK_COMP        0x1004
  19 #define EXT_IRQ_CPU_TIMER       0x1005
  20 #define EXT_IRQ_WARNING_TRACK   0x1007
  21 #define EXT_IRQ_MALFUNC_ALERT   0x1200
  22 #define EXT_IRQ_EMERGENCY_SIG   0x1201
  23 #define EXT_IRQ_EXTERNAL_CALL   0x1202
  24 #define EXT_IRQ_TIMING_ALERT    0x1406
  25 #define EXT_IRQ_MEASURE_ALERT   0x1407
  26 #define EXT_IRQ_SERVICE_SIG     0x2401
  27 #define EXT_IRQ_CP_SERVICE      0x2603
  28 #define EXT_IRQ_IUCV            0x4000
  29
  30 #ifndef __ASSEMBLY__
  31
  32 #include <linux/hardirq.h>
  33 #include <linux/percpu.h>
  34 #include <linux/cache.h>
  35 #include <linux/types.h>
  36
  37 enum interruption_class {
  38         IRQEXT_CLK,
  39         IRQEXT_EXC,
  40         IRQEXT_EMS,
  41         IRQEXT_TMR,
  42         IRQEXT_TLA,
  43         IRQEXT_PFL,
  44         IRQEXT_DSD,
  45         IRQEXT_VRT,
  46         IRQEXT_SCP,
  47         IRQEXT_IUC,
  48         IRQEXT_CMS,
  49         IRQEXT_CMC,
  50         IRQEXT_CMR,
  51         IRQEXT_FTP,
  52         IRQIO_CIO,
  53         IRQIO_QAI,
  54         IRQIO_DAS,
  55         IRQIO_C15,
  56         IRQIO_C70,
  57         IRQIO_TAP,
  58         IRQIO_VMR,
  59         IRQIO_LCS,
  60         IRQIO_CTC,
  61         IRQIO_APB,
  62         IRQIO_ADM,
  63         IRQIO_CSC,
  64         IRQIO_PCI,
  65         IRQIO_MSI,
  66         IRQIO_VIR,
  67         IRQIO_VAI,
  68         NMI_NMI,
  69         CPU_RST,
  70         NR_ARCH_IRQS
  71 };
  72
  73 struct irq_stat {
  74         unsigned int irqs[NR_ARCH_IRQS];
  75 };
  76
  77 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  78
  79 static __always_inline void inc_irq_stat(enum interruption_class irq)
  80 {
  81         __this_cpu_inc(irq_stat.irqs[irq]);
  82 }
  83
  84 struct ext_code {
  85         unsigned short subcode;
  86         unsigned short code;
  87 };
  88
  89 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  90
  91 int register_external_irq(u16 code, ext_int_handler_t handler);
  92 int unregister_external_irq(u16 code, ext_int_handler_t handler);
  93
  94 enum irq_subclass {
  95         IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
  96         IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
  97 };
  98
  99 void irq_subclass_register(enum irq_subclass subclass);
 100 void irq_subclass_unregister(enum irq_subclass subclass);
 101
 102 #define irq_canonicalize(irq)  (irq)
 103
 104 #endif /* __ASSEMBLY__ */
 105
 106 #endif /* _ASM_IRQ_H */