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
37 enum 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_FTP,
51 IRQIO_CIO,
52 IRQIO_QAI,
53 IRQIO_DAS,
54 IRQIO_C15,
55 IRQIO_C70,
56 IRQIO_TAP,
57 IRQIO_VMR,
58 IRQIO_LCS,
59 IRQIO_CTC,
60 IRQIO_APB,
61 IRQIO_ADM,
62 IRQIO_CSC,
63 IRQIO_PCI,
64 IRQIO_MSI,
65 IRQIO_VIR,
66 IRQIO_VAI,
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
inc_irq_stat(enum interruption_class irq)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 */
119