tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
37enum 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_CLW,
61 IRQIO_CTC,
62 IRQIO_APB,
63 IRQIO_ADM,
64 IRQIO_CSC,
65 IRQIO_PCI,
66 IRQIO_MSI,
67 IRQIO_VIR,
68 IRQIO_VAI,
69 NMI_NMI,
70 CPU_RST,
71 NR_ARCH_IRQS
72};
73
74struct irq_stat {
75 unsigned int irqs[NR_ARCH_IRQS];
76};
77
78DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
79
80static __always_inline void inc_irq_stat(enum interruption_class irq)
81{
82 __this_cpu_inc(irq_stat.irqs[irq]);
83}
84
85struct ext_code {
86 unsigned short subcode;
87 unsigned short code;
88};
89
90typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);
91
92int register_external_irq(u16 code, ext_int_handler_t handler);
93int unregister_external_irq(u16 code, ext_int_handler_t handler);
94
95enum irq_subclass {
96 IRQ_SUBCLASS_MEASUREMENT_ALERT = 5,
97 IRQ_SUBCLASS_SERVICE_SIGNAL = 9,
98};
99
100void irq_subclass_register(enum irq_subclass subclass);
101void irq_subclass_unregister(enum irq_subclass subclass);
102
103#define irq_canonicalize(irq) (irq)
104
105#endif /* __ASSEMBLY__ */
106
107#endif /* _ASM_IRQ_H */