arch/s390/include/asm/irq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_IRQ_H
   3 #define _ASM_IRQ_H
   4
   5 #define EXT_INTERRUPT   0
   6 #define IO_INTERRUPT    1
   7 #define THIN_INTERRUPT  2
   8
   9 #define NR_IRQS_BASE    3
  10
  11 #define NR_IRQS NR_IRQS_BASE
  12 #define NR_IRQS_LEGACY NR_IRQS_BASE
  13
  14 /* External interruption codes */
  15 #define EXT_IRQ_INTERRUPT_KEY   0x0040
  16 #define EXT_IRQ_CLK_COMP        0x1004
  17 #define EXT_IRQ_CPU_TIMER       0x1005
  18 #define EXT_IRQ_WARNING_TRACK   0x1007
  19 #define EXT_IRQ_MALFUNC_ALERT   0x1200
  20 #define EXT_IRQ_EMERGENCY_SIG   0x1201
  21 #define EXT_IRQ_EXTERNAL_CALL   0x1202
  22 #define EXT_IRQ_TIMING_ALERT    0x1406
  23 #define EXT_IRQ_MEASURE_ALERT   0x1407
  24 #define EXT_IRQ_SERVICE_SIG     0x2401
  25 #define EXT_IRQ_CP_SERVICE      0x2603
  26 #define EXT_IRQ_IUCV            0x4000
  27
  28 #ifndef __ASSEMBLY__
  29
  30 #include <linux/hardirq.h>
  31 #include <linux/percpu.h>
  32 #include <linux/cache.h>
  33 #include <linux/types.h>
  34
  35 enum interruption_class {
  36         IRQEXT_CLK,
  37         IRQEXT_EXC,
  38         IRQEXT_EMS,
  39         IRQEXT_TMR,
  40         IRQEXT_TLA,
  41         IRQEXT_PFL,
  42         IRQEXT_DSD,
  43         IRQEXT_VRT,
  44         IRQEXT_SCP,
  45         IRQEXT_IUC,
  46         IRQEXT_CMS,
  47         IRQEXT_CMC,
  48         IRQEXT_FTP,
  49         IRQIO_CIO,
  50         IRQIO_DAS,
  51         IRQIO_C15,
  52         IRQIO_C70,
  53         IRQIO_TAP,
  54         IRQIO_VMR,
  55         IRQIO_LCS,
  56         IRQIO_CTC,
  57         IRQIO_ADM,
  58         IRQIO_CSC,
  59         IRQIO_VIR,
  60         IRQIO_QAI,
  61         IRQIO_APB,
  62         IRQIO_PCF,
  63         IRQIO_PCD,
  64         IRQIO_MSI,
  65         IRQIO_VAI,
  66         IRQIO_GAL,
  67         NMI_NMI,
  68         CPU_RST,
  69         NR_ARCH_IRQS
  70 };
  71
  72 struct irq_stat {
  73         unsigned int irqs[NR_ARCH_IRQS];
  74 };
  75
  76 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
  77
  78 static __always_inline void inc_irq_stat(enum interruption_class irq)
  79 {
  80         __this_cpu_inc(irq_stat.irqs[irq]);
  81 }
  82
  83 struct ext_code {
  84         unsigned short subcode;
  85         unsigned short code;
  86 };
  87
  88 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
  89
  90 int register_external_irq(u16 code, ext_int_handler_t handler);
  91 int unregister_external_irq(u16 code, ext_int_handler_t handler);
  92
  93 enum irq_subclass {
  94         IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
  95         IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
  96 };
  97
  98 #define CR0_IRQ_SUBCLASS_MASK                                     \
  99         ((1UL << (63 - 30))  /* Warning Track */                | \
 100          (1UL << (63 - 48))  /* Malfunction Alert */            | \
 101          (1UL << (63 - 49))  /* Emergency Signal */             | \
 102          (1UL << (63 - 50))  /* External Call */                | \
 103          (1UL << (63 - 52))  /* Clock Comparator */             | \
 104          (1UL << (63 - 53))  /* CPU Timer */                    | \
 105          (1UL << (63 - 54))  /* Service Signal */               | \
 106          (1UL << (63 - 57))  /* Interrupt Key */                | \
 107          (1UL << (63 - 58))  /* Measurement Alert */            | \
 108          (1UL << (63 - 59))  /* Timing Alert */                 | \
 109          (1UL << (63 - 62))) /* IUCV */
 110
 111 void irq_subclass_register(enum irq_subclass subclass);
 112 void irq_subclass_unregister(enum irq_subclass subclass);
 113
 114 #define irq_canonicalize(irq)  (irq)
 115
 116 #endif /* __ASSEMBLY__ */
 117
 118 #endif /* _ASM_IRQ_H */