LXR linux/drivers/sh/intc/internals.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#include <linux/sh_intc.h>
   3#include <linux/irq.h>
   4#include <linux/irqdomain.h>
   5#include <linux/list.h>
   6#include <linux/kernel.h>
   7#include <linux/types.h>
   8#include <linux/radix-tree.h>
   9#include <linux/device.h>
  10
  11#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
  12        ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
  13         ((addr_e) << 16) | ((addr_d << 24)))
  14
  15#define _INTC_SHIFT(h)          (h & 0x1f)
  16#define _INTC_WIDTH(h)          ((h >> 5) & 0xf)
  17#define _INTC_FN(h)             ((h >> 9) & 0xf)
  18#define _INTC_MODE(h)           ((h >> 13) & 0x7)
  19#define _INTC_ADDR_E(h)         ((h >> 16) & 0xff)
  20#define _INTC_ADDR_D(h)         ((h >> 24) & 0xff)
  21
  22#ifdef CONFIG_SMP
  23#define IS_SMP(x)               (x.smp)
  24#define INTC_REG(d, x, c)       (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c))
  25#define SMP_NR(d, x)            ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1)
  26#else
  27#define IS_SMP(x)               0
  28#define INTC_REG(d, x, c)       (d->reg[(x)])
  29#define SMP_NR(d, x)            1
  30#endif
  31
  32struct intc_handle_int {
  33        unsigned int irq;
  34        unsigned long handle;
  35};
  36
  37struct intc_window {
  38        phys_addr_t phys;
  39        void __iomem *virt;
  40        unsigned long size;
  41};
  42
  43struct intc_map_entry {
  44        intc_enum enum_id;
  45        struct intc_desc_int *desc;
  46};
  47
  48struct intc_subgroup_entry {
  49        unsigned int pirq;
  50        intc_enum enum_id;
  51        unsigned long handle;
  52};
  53
  54struct intc_desc_int {
  55        struct list_head list;
  56        struct device dev;
  57        struct radix_tree_root tree;
  58        raw_spinlock_t lock;
  59        unsigned int index;
  60        unsigned long *reg;
  61#ifdef CONFIG_SMP
  62        unsigned long *smp;
  63#endif
  64        unsigned int nr_reg;
  65        struct intc_handle_int *prio;
  66        unsigned int nr_prio;
  67        struct intc_handle_int *sense;
  68        unsigned int nr_sense;
  69        struct intc_window *window;
  70        unsigned int nr_windows;
  71        struct irq_domain *domain;
  72        struct irq_chip chip;
  73        bool skip_suspend;
  74};
  75
  76
  77enum {
  78        REG_FN_ERR = 0,
  79        REG_FN_TEST_BASE = 1,
  80        REG_FN_WRITE_BASE = 5,
  81        REG_FN_MODIFY_BASE = 9
  82};
  83
  84enum {  MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
  85        MODE_MASK_REG,       /* Bit(s) set -> interrupt disabled */
  86        MODE_DUAL_REG,       /* Two registers, set bit to enable / disable */
  87        MODE_PRIO_REG,       /* Priority value written to enable interrupt */
  88        MODE_PCLR_REG,       /* Above plus all bits set to disable interrupt */
  89};
  90
  91static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
  92{
  93        struct irq_chip *chip = irq_get_chip(irq);
  94
  95        return container_of(chip, struct intc_desc_int, chip);
  96}
  97
  98/*
  99 * Grumble.
 100 */
 101static inline void activate_irq(int irq)
 102{
 103        irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE);
 104}
 105
 106static inline int intc_handle_int_cmp(const void *a, const void *b)
 107{
 108        const struct intc_handle_int *_a = a;
 109        const struct intc_handle_int *_b = b;
 110
 111        return _a->irq - _b->irq;
 112}
 113
 114/* access.c */
 115extern unsigned long
 116(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data);
 117
 118extern unsigned long
 119(*intc_enable_fns[])(unsigned long addr, unsigned long handle,
 120                     unsigned long (*fn)(unsigned long,
 121                                unsigned long, unsigned long),
 122                     unsigned int irq);
 123extern unsigned long
 124(*intc_disable_fns[])(unsigned long addr, unsigned long handle,
 125                      unsigned long (*fn)(unsigned long,
 126                                unsigned long, unsigned long),
 127                      unsigned int irq);
 128extern unsigned long
 129(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle,
 130                            unsigned long (*fn)(unsigned long,
 131                                unsigned long, unsigned long),
 132                            unsigned int irq);
 133
 134unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address);
 135unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address);
 136unsigned int intc_set_field_from_handle(unsigned int value,
 137                            unsigned int field_value,
 138                            unsigned int handle);
 139unsigned long intc_get_field_from_handle(unsigned int value,
 140                                         unsigned int handle);
 141
 142/* balancing.c */
 143#ifdef CONFIG_INTC_BALANCING
 144void intc_balancing_enable(unsigned int irq);
 145void intc_balancing_disable(unsigned int irq);
 146void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 147                          struct intc_desc_int *d, intc_enum id);
 148#else
 149static inline void intc_balancing_enable(unsigned int irq) { }
 150static inline void intc_balancing_disable(unsigned int irq) { }
 151static inline void
 152intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 153                     struct intc_desc_int *d, intc_enum id) { }
 154#endif
 155
 156/* chip.c */
 157extern struct irq_chip intc_irq_chip;
 158void _intc_enable(struct irq_data *data, unsigned long handle);
 159
 160/* core.c */
 161extern struct list_head intc_list;
 162extern raw_spinlock_t intc_big_lock;
 163extern struct bus_type intc_subsys;
 164
 165unsigned int intc_get_dfl_prio_level(void);
 166unsigned int intc_get_prio_level(unsigned int irq);
 167void intc_set_prio_level(unsigned int irq, unsigned int level);
 168
 169/* handle.c */
 170unsigned int intc_get_mask_handle(struct intc_desc *desc,
 171                                  struct intc_desc_int *d,
 172                                  intc_enum enum_id, int do_grps);
 173unsigned int intc_get_prio_handle(struct intc_desc *desc,
 174                                  struct intc_desc_int *d,
 175                                  intc_enum enum_id, int do_grps);
 176unsigned int intc_get_sense_handle(struct intc_desc *desc,
 177                                   struct intc_desc_int *d,
 178                                   intc_enum enum_id);
 179void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc,
 180                         struct intc_desc_int *d, intc_enum id);
 181unsigned long intc_get_ack_handle(unsigned int irq);
 182void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
 183                              intc_enum enum_id, int enable);
 184
 185/* irqdomain.c */
 186void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw);
 187
 188/* virq.c */
 189void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
 190void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
 191struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);
 192