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 /* External interruption codes */
20 #define EXT_IRQ_INTERRUPT_KEY 0x0040
21 #define EXT_IRQ_CLK_COMP 0x1004
22 #define EXT_IRQ_CPU_TIMER 0x1005
23 #define EXT_IRQ_WARNING_TRACK 0x1007
24 #define EXT_IRQ_MALFUNC_ALERT 0x1200
25 #define EXT_IRQ_EMERGENCY_SIG 0x1201
26 #define EXT_IRQ_EXTERNAL_CALL 0x1202
27 #define EXT_IRQ_TIMING_ALERT 0x1406
28 #define EXT_IRQ_MEASURE_ALERT 0x1407
29 #define EXT_IRQ_SERVICE_SIG 0x2401
30 #define EXT_IRQ_CP_SERVICE 0x2603
31 #define EXT_IRQ_IUCV 0x4000
32
33 #ifndef __ASSEMBLY__
34
35 #include <linux/hardirq.h>
36 #include <linux/percpu.h>
37 #include <linux/cache.h>
38 #include <linux/types.h>
39
40 enum interruption_class {
41 IRQEXT_CLK,
42 IRQEXT_EXC,
43 IRQEXT_EMS,
44 IRQEXT_TMR,
45 IRQEXT_TLA,
46 IRQEXT_PFL,
47 IRQEXT_DSD,
48 IRQEXT_VRT,
49 IRQEXT_SCP,
50 IRQEXT_IUC,
51 IRQEXT_CMS,
52 IRQEXT_CMC,
53 IRQEXT_CMR,
54 IRQEXT_FTP,
55 IRQIO_CIO,
56 IRQIO_QAI,
57 IRQIO_DAS,
58 IRQIO_C15,
59 IRQIO_C70,
60 IRQIO_TAP,
61 IRQIO_VMR,
62 IRQIO_LCS,
63 IRQIO_CLW,
64 IRQIO_CTC,
65 IRQIO_APB,
66 IRQIO_ADM,
67 IRQIO_CSC,
68 IRQIO_PCI,
69 IRQIO_MSI,
70 IRQIO_VIR,
71 IRQIO_VAI,
72 NMI_NMI,
73 CPU_RST,
74 NR_ARCH_IRQS
75 };
76
77 struct irq_stat {
78 unsigned int irqs[NR_ARCH_IRQS];
79 };
80
81 DECLARE_PER_CPU_SHARED_ALIGNED(struct irq_stat, irq_stat);
82
inc_irq_stat(enum interruption_class irq)83 static __always_inline void inc_irq_stat(enum interruption_class irq)
84 {
85 __this_cpu_inc(irq_stat.irqs[irq]);
86 }
87
88 struct ext_code {
89 unsigned short subcode;
90 unsigned short code;
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 void irq_subclass_register(enum irq_subclass subclass);
104 void irq_subclass_unregister(enum irq_subclass subclass);
105
106 #define irq_canonicalize(irq) (irq)
107
108 #endif /* __ASSEMBLY__ */
109
110 #endif /* _ASM_IRQ_H */
111