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 union { 85 struct { 86 unsigned short subcode; 87 unsigned short code; 88 }; 89 unsigned int int_code; 90 }; 91 }; 92 93 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long); 94 95 int register_external_irq(u16 code, ext_int_handler_t handler); 96 int unregister_external_irq(u16 code, ext_int_handler_t handler); 97 98 enum irq_subclass { 99 IRQ_SUBCLASS_MEASUREMENT_ALERT = 5, 100 IRQ_SUBCLASS_SERVICE_SIGNAL = 9, 101 }; 102 103 #define CR0_IRQ_SUBCLASS_MASK \ 104 ((1UL << (63 - 30)) /* Warning Track */ | \ 105 (1UL << (63 - 48)) /* Malfunction Alert */ | \ 106 (1UL << (63 - 49)) /* Emergency Signal */ | \ 107 (1UL << (63 - 50)) /* External Call */ | \ 108 (1UL << (63 - 52)) /* Clock Comparator */ | \ 109 (1UL << (63 - 53)) /* CPU Timer */ | \ 110 (1UL << (63 - 54)) /* Service Signal */ | \ 111 (1UL << (63 - 57)) /* Interrupt Key */ | \ 112 (1UL << (63 - 58)) /* Measurement Alert */ | \ 113 (1UL << (63 - 59)) /* Timing Alert */ | \ 114 (1UL << (63 - 62))) /* IUCV */ 115 116 void irq_subclass_register(enum irq_subclass subclass); 117 void irq_subclass_unregister(enum irq_subclass subclass); 118 119 #define irq_canonicalize(irq) (irq) 120 121 #endif /* __ASSEMBLY__ */ 122 123 #endif /* _ASM_IRQ_H */ 124