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_QAI, 51 IRQIO_DAS, 52 IRQIO_C15, 53 IRQIO_C70, 54 IRQIO_TAP, 55 IRQIO_VMR, 56 IRQIO_LCS, 57 IRQIO_CTC, 58 IRQIO_APB, 59 IRQIO_ADM, 60 IRQIO_CSC, 61 IRQIO_PCI, 62 IRQIO_MSI, 63 IRQIO_VIR, 64 IRQIO_VAI, 65 IRQIO_GAL, 66 NMI_NMI, 67 CPU_RST, 68 NR_ARCH_IRQS 69 }; 70 71 struct irq_stat { 72 unsigned int irqs[NR_ARCH_IRQS]; 73 }; 74 75 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat); 76 77 static __always_inline void inc_irq_stat(enum interruption_class irq) 78 { 79 __this_cpu_inc(irq_stat.irqs[irq]); 80 } 81 82 struct ext_code { 83 unsigned short subcode; 84 unsigned short code; 85 }; 86 87 typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long); 88 89 int register_external_irq(u16 code, ext_int_handler_t handler); 90 int unregister_external_irq(u16 code, ext_int_handler_t handler); 91 92 enum irq_subclass { 93 IRQ_SUBCLASS_MEASUREMENT_ALERT = 5, 94 IRQ_SUBCLASS_SERVICE_SIGNAL = 9, 95 }; 96 97 #define CR0_IRQ_SUBCLASS_MASK \ 98 ((1UL << (63 - 30)) /* Warning Track */ | \ 99 (1UL << (63 - 48)) /* Malfunction Alert */ | \ 100 (1UL << (63 - 49)) /* Emergency Signal */ | \ 101 (1UL << (63 - 50)) /* External Call */ | \ 102 (1UL << (63 - 52)) /* Clock Comparator */ | \ 103 (1UL << (63 - 53)) /* CPU Timer */ | \ 104 (1UL << (63 - 54)) /* Service Signal */ | \ 105 (1UL << (63 - 57)) /* Interrupt Key */ | \ 106 (1UL << (63 - 58)) /* Measurement Alert */ | \ 107 (1UL << (63 - 59)) /* Timing Alert */ | \ 108 (1UL << (63 - 62))) /* IUCV */ 109 110 void irq_subclass_register(enum irq_subclass subclass); 111 void irq_subclass_unregister(enum irq_subclass subclass); 112 113 #define irq_canonicalize(irq) (irq) 114 115 #endif /* __ASSEMBLY__ */ 116 117 #endif /* _ASM_IRQ_H */ 118