include/linux/sh_intc.h

   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 void reserve_intc_vectors(struct intc_vect *vectors, unsigned int nr_vecs);
 137 int intc_set_priority(unsigned int irq, unsigned int prio);
 138 int intc_irq_lookup(const char *chipname, intc_enum enum_id);
 139 void intc_finalize(void);
 140
 141 #ifdef CONFIG_INTC_USERIMASK
 142 int register_intc_userimask(unsigned long addr);
 143 #else
 144 static inline int register_intc_userimask(unsigned long addr)
 145 {
 146         return 0;
 147 }
 148 #endif
 149
 150 #endif /* __SH_INTC_H */