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TOMOYO Linux Cross Reference
Linux/include/linux/sh_intc.h

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  1 #ifndef __SH_INTC_H
  2 #define __SH_INTC_H
  3 
  4 #include <linux/ioport.h>
  5 
  6 #ifdef CONFIG_SUPERH
  7 #define INTC_NR_IRQS    512
  8 #else
  9 #define INTC_NR_IRQS    1024
 10 #endif
 11 
 12 /*
 13  * Convert back and forth between INTEVT and IRQ values.
 14  */
 15 #ifdef CONFIG_CPU_HAS_INTEVT
 16 #define evt2irq(evt)            (((evt) >> 5) - 16)
 17 #define irq2evt(irq)            (((irq) + 16) << 5)
 18 #else
 19 #define evt2irq(evt)            (evt)
 20 #define irq2evt(irq)            (irq)
 21 #endif
 22 
 23 typedef unsigned char intc_enum;
 24 
 25 struct intc_vect {
 26         intc_enum enum_id;
 27         unsigned short vect;
 28 };
 29 
 30 #define INTC_VECT(enum_id, vect) { enum_id, vect }
 31 #define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
 32 
 33 struct intc_group {
 34         intc_enum enum_id;
 35         intc_enum enum_ids[32];
 36 };
 37 
 38 #define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
 39 
 40 struct intc_subgroup {
 41         unsigned long reg, reg_width;
 42         intc_enum parent_id;
 43         intc_enum enum_ids[32];
 44 };
 45 
 46 struct intc_mask_reg {
 47         unsigned long set_reg, clr_reg, reg_width;
 48         intc_enum enum_ids[32];
 49 #ifdef CONFIG_INTC_BALANCING
 50         unsigned long dist_reg;
 51 #endif
 52 #ifdef CONFIG_SMP
 53         unsigned long smp;
 54 #endif
 55 };
 56 
 57 struct intc_prio_reg {
 58         unsigned long set_reg, clr_reg, reg_width, field_width;
 59         intc_enum enum_ids[16];
 60 #ifdef CONFIG_SMP
 61         unsigned long smp;
 62 #endif
 63 };
 64 
 65 struct intc_sense_reg {
 66         unsigned long reg, reg_width, field_width;
 67         intc_enum enum_ids[16];
 68 };
 69 
 70 #ifdef CONFIG_INTC_BALANCING
 71 #define INTC_SMP_BALANCING(reg) .dist_reg = (reg)
 72 #else
 73 #define INTC_SMP_BALANCING(reg)
 74 #endif
 75 
 76 #ifdef CONFIG_SMP
 77 #define INTC_SMP(stride, nr)    .smp = (stride) | ((nr) << 8)
 78 #else
 79 #define INTC_SMP(stride, nr)
 80 #endif
 81 
 82 struct intc_hw_desc {
 83         struct intc_vect *vectors;
 84         unsigned int nr_vectors;
 85         struct intc_group *groups;
 86         unsigned int nr_groups;
 87         struct intc_mask_reg *mask_regs;
 88         unsigned int nr_mask_regs;
 89         struct intc_prio_reg *prio_regs;
 90         unsigned int nr_prio_regs;
 91         struct intc_sense_reg *sense_regs;
 92         unsigned int nr_sense_regs;
 93         struct intc_mask_reg *ack_regs;
 94         unsigned int nr_ack_regs;
 95         struct intc_subgroup *subgroups;
 96         unsigned int nr_subgroups;
 97 };
 98 
 99 #define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a)
100 
101 #define INTC_HW_DESC(vectors, groups, mask_regs,        \
102                      prio_regs, sense_regs, ack_regs)   \
103 {                                                       \
104         _INTC_ARRAY(vectors), _INTC_ARRAY(groups),      \
105         _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
106         _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \
107 }
108 
109 struct intc_desc {
110         char *name;
111         struct resource *resource;
112         unsigned int num_resources;
113         intc_enum force_enable;
114         intc_enum force_disable;
115         bool skip_syscore_suspend;
116         struct intc_hw_desc hw;
117 };
118 
119 #define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,            \
120         mask_regs, prio_regs, sense_regs)                               \
121 struct intc_desc symbol __initdata = {                                  \
122         .name = chipname,                                               \
123         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
124                            prio_regs, sense_regs, NULL),                \
125 }
126 
127 #define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,        \
128         mask_regs, prio_regs, sense_regs, ack_regs)                     \
129 struct intc_desc symbol __initdata = {                                  \
130         .name = chipname,                                               \
131         .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
132                            prio_regs, sense_regs, ack_regs),            \
133 }
134 
135 int register_intc_controller(struct intc_desc *desc);
136 int intc_set_priority(unsigned int irq, unsigned int prio);
137 int intc_irq_lookup(const char *chipname, intc_enum enum_id);
138 void intc_finalize(void);
139 
140 #ifdef CONFIG_INTC_USERIMASK
141 int register_intc_userimask(unsigned long addr);
142 #else
143 static inline int register_intc_userimask(unsigned long addr)
144 {
145         return 0;
146 }
147 #endif
148 
149 #endif /* __SH_INTC_H */
150 

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