LXR linux/include/linux/sh

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __SH_INTC_H
   3#define __SH_INTC_H
   4
   5#include <linux/ioport.h>
   6
   7#ifdef CONFIG_SUPERH
   8#define INTC_NR_IRQS    512
   9#else
  10#define INTC_NR_IRQS    1024
  11#endif
  12
  13/*
  14 * Convert back and forth between INTEVT and IRQ values.
  15 */
  16#ifdef CONFIG_CPU_HAS_INTEVT
  17#define evt2irq(evt)            (((evt) >> 5) - 16)
  18#define irq2evt(irq)            (((irq) + 16) << 5)
  19#else
  20#define evt2irq(evt)            (evt)
  21#define irq2evt(irq)            (irq)
  22#endif
  23
  24typedef unsigned char intc_enum;
  25
  26struct intc_vect {
  27        intc_enum enum_id;
  28        unsigned short vect;
  29};
  30
  31#define INTC_VECT(enum_id, vect) { enum_id, vect }
  32#define INTC_IRQ(enum_id, irq) INTC_VECT(enum_id, irq2evt(irq))
  33
  34struct intc_group {
  35        intc_enum enum_id;
  36        intc_enum enum_ids[32];
  37};
  38
  39#define INTC_GROUP(enum_id, ids...) { enum_id, { ids } }
  40
  41struct intc_subgroup {
  42        unsigned long reg, reg_width;
  43        intc_enum parent_id;
  44        intc_enum enum_ids[32];
  45};
  46
  47struct intc_mask_reg {
  48        unsigned long set_reg, clr_reg, reg_width;
  49        intc_enum enum_ids[32];
  50#ifdef CONFIG_INTC_BALANCING
  51        unsigned long dist_reg;
  52#endif
  53#ifdef CONFIG_SMP
  54        unsigned long smp;
  55#endif
  56};
  57
  58struct intc_prio_reg {
  59        unsigned long set_reg, clr_reg, reg_width, field_width;
  60        intc_enum enum_ids[16];
  61#ifdef CONFIG_SMP
  62        unsigned long smp;
  63#endif
  64};
  65
  66struct intc_sense_reg {
  67        unsigned long reg, reg_width, field_width;
  68        intc_enum enum_ids[16];
  69};
  70
  71#ifdef CONFIG_INTC_BALANCING
  72#define INTC_SMP_BALANCING(reg) .dist_reg = (reg)
  73#else
  74#define INTC_SMP_BALANCING(reg)
  75#endif
  76
  77#ifdef CONFIG_SMP
  78#define INTC_SMP(stride, nr)    .smp = (stride) | ((nr) << 8)
  79#else
  80#define INTC_SMP(stride, nr)
  81#endif
  82
  83struct intc_hw_desc {
  84        struct intc_vect *vectors;
  85        unsigned int nr_vectors;
  86        struct intc_group *groups;
  87        unsigned int nr_groups;
  88        struct intc_mask_reg *mask_regs;
  89        unsigned int nr_mask_regs;
  90        struct intc_prio_reg *prio_regs;
  91        unsigned int nr_prio_regs;
  92        struct intc_sense_reg *sense_regs;
  93        unsigned int nr_sense_regs;
  94        struct intc_mask_reg *ack_regs;
  95        unsigned int nr_ack_regs;
  96        struct intc_subgroup *subgroups;
  97        unsigned int nr_subgroups;
  98};
  99
 100#define _INTC_ARRAY(a) a, __same_type(a, NULL) ? 0 : sizeof(a)/sizeof(*a)
 101
 102#define INTC_HW_DESC(vectors, groups, mask_regs,        \
 103                     prio_regs, sense_regs, ack_regs)   \
 104{                                                       \
 105        _INTC_ARRAY(vectors), _INTC_ARRAY(groups),      \
 106        _INTC_ARRAY(mask_regs), _INTC_ARRAY(prio_regs), \
 107        _INTC_ARRAY(sense_regs), _INTC_ARRAY(ack_regs), \
 108}
 109
 110struct intc_desc {
 111        char *name;
 112        struct resource *resource;
 113        unsigned int num_resources;
 114        intc_enum force_enable;
 115        intc_enum force_disable;
 116        bool skip_syscore_suspend;
 117        struct intc_hw_desc hw;
 118};
 119
 120#define DECLARE_INTC_DESC(symbol, chipname, vectors, groups,            \
 121        mask_regs, prio_regs, sense_regs)                               \
 122struct intc_desc symbol __initdata = {                                  \
 123        .name = chipname,                                               \
 124        .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
 125                           prio_regs, sense_regs, NULL),                \
 126}
 127
 128#define DECLARE_INTC_DESC_ACK(symbol, chipname, vectors, groups,        \
 129        mask_regs, prio_regs, sense_regs, ack_regs)                     \
 130struct intc_desc symbol __initdata = {                                  \
 131        .name = chipname,                                               \
 132        .hw = INTC_HW_DESC(vectors, groups, mask_regs,                  \
 133                           prio_regs, sense_regs, ack_regs),            \
 134}
 135
 136int register_intc_controller(struct intc_desc *desc);
 137int intc_set_priority(unsigned int irq, unsigned int prio);
 138int intc_irq_lookup(const char *chipname, intc_enum enum_id);
 139void intc_finalize(void);
 140
 141#ifdef CONFIG_INTC_USERIMASK
 142int register_intc_userimask(unsigned long addr);
 143#else
 144static inline int register_intc_userimask(unsigned long addr)
 145{
 146        return 0;
 147}
 148#endif
 149
 150#endif /* __SH_INTC_H */
 151