1STRUCT IRQ_CHIP_GENE(9)           Structures           STRUCT IRQ_CHIP_GENE(9)
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NAME

6       struct_irq_chip_generic - Generic irq chip data structure
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SYNOPSIS

9       struct irq_chip_generic {
10         raw_spinlock_t lock;
11         void __iomem * reg_base;
12         unsigned int irq_base;
13         unsigned int irq_cnt;
14         u32 mask_cache;
15         u32 type_cache;
16         u32 polarity_cache;
17         u32 wake_enabled;
18         u32 wake_active;
19         unsigned int num_ct;
20         void * private;
21         struct list_head list;
22         struct irq_chip_type chip_types[0];
23       };
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MEMBERS

26       lock
27           Lock to protect register and cache data access
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29       reg_base
30           Register base address (virtual)
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32       irq_base
33           Interrupt base nr for this chip
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35       irq_cnt
36           Number of interrupts handled by this chip
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38       mask_cache
39           Cached mask register
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41       type_cache
42           Cached type register
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44       polarity_cache
45           Cached polarity register
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47       wake_enabled
48           Interrupt can wakeup from suspend
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50       wake_active
51           Interrupt is marked as an wakeup from suspend source
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53       num_ct
54           Number of available irq_chip_type instances (usually 1)
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56       private
57           Private data for non generic chip callbacks
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59       list
60           List head for keeping track of instances
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62       chip_types[0]
63           Array of interrupt irq_chip_types
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DESCRIPTION

66       Note, that irq_chip_generic can have multiple irq_chip_type
67       implementations which can be associated to a particular irq line of an
68       irq_chip_generic instance. That allows to share and protect state in an
69       irq_chip_generic instance when we need to implement different flow
70       mechanisms (level/edge) for it.
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AUTHORS

73       Thomas Gleixner <tglx@linutronix.de>
74           Author.
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76       Ingo Molnar <mingo@elte.hu>
77           Author.
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80Kernel Hackers Manual 3.10         June 2019           STRUCT IRQ_CHIP_GENE(9)
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