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 #ifndef __ASSEMBLY__
  20
  21 #include <linux/hardirq.h>
  22 #include <linux/percpu.h>
  23 #include <linux/cache.h>
  24 #include <linux/types.h>
  25
  26 enum interruption_class {
  27         IRQEXT_CLK,
  28         IRQEXT_EXC,
  29         IRQEXT_EMS,
  30         IRQEXT_TMR,
  31         IRQEXT_TLA,
  32         IRQEXT_PFL,
  33         IRQEXT_DSD,
  34         IRQEXT_VRT,
  35         IRQEXT_SCP,
  36         IRQEXT_IUC,
  37         IRQEXT_CMS,
  38         IRQEXT_CMC,
  39         IRQEXT_CMR,
  40         IRQIO_CIO,
  41         IRQIO_QAI,
  42         IRQIO_DAS,
  43         IRQIO_C15,
  44         IRQIO_C70,
  45         IRQIO_TAP,
  46         IRQIO_VMR,
  47         IRQIO_LCS,
  48         IRQIO_CLW,
  49         IRQIO_CTC,
  50         IRQIO_APB,
  51         IRQIO_ADM,
  52         IRQIO_CSC,
  53         IRQIO_PCI,
  54         IRQIO_MSI,
  55         IRQIO_VIR,
  56         NMI_NMI,
  57         CPU_RST,
  58         NR_ARCH_IRQS
  59 };
  60
  61 struct irq_stat {
  62         unsigned int irqs[NR_ARCH_IRQS];
  63 };
  64
  65 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  66
  67 static __always_inline void inc_irq_stat(enum interruption_class irq)
  68 {
  69         __get_cpu_var(irq_stat).irqs[irq]++;
  70 }
  71
  72 struct ext_code {
  73         unsigned short subcode;
  74         unsigned short code;
  75 };
  76
  77 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  78
  79 int register_external_interrupt(u16 code, ext_int_handler_t handler);
  80 int unregister_external_interrupt(u16 code, ext_int_handler_t handler);
  81
  82 enum irq_subclass {
  83         IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
  84         IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
  85 };
  86
  87 void irq_subclass_register(enum irq_subclass subclass);
  88 void irq_subclass_unregister(enum irq_subclass subclass);
  89
  90 #define irq_canonicalize(irq)  (irq)
  91
  92 #endif /* __ASSEMBLY__ */
  93
  94 #endif /* _ASM_IRQ_H */