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

   1#include <linux/sh_intc.h>
   2#include <linux/irq.h>
   3#include <linux/irqdomain.h>
   4#include <linux/list.h>
   5#include <linux/kernel.h>
   6#include <linux/types.h>
   7#include <linux/radix-tree.h>
   8#include <linux/device.h>
   9
  10#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
  11        ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
  12         ((addr_e) << 16) | ((addr_d << 24)))
  13
  14#define _INTC_SHIFT(h)          (h & 0x1f)
  15#define _INTC_WIDTH(h)          ((h >> 5) & 0xf)
  16#define _INTC_FN(h)             ((h >> 9) & 0xf)
  17#define _INTC_MODE(h)           ((h >> 13) & 0x7)
  18#define _INTC_ADDR_E(h)         ((h >> 16) & 0xff)
  19#define _INTC_ADDR_D(h)         ((h >> 24) & 0xff)
  20
  21#ifdef CONFIG_SMP
  22#define IS_SMP(x)               (x.smp)
  23#define INTC_REG(d, x, c)       (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c))
  24#define SMP_NR(d, x)            ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1)
  25#else
  26#define IS_SMP(x)               0
  27#define INTC_REG(d, x, c)       (d->reg[(x)])
  28#define SMP_NR(d, x)            1
  29#endif
  30
  31struct intc_handle_int {
  32        unsigned int irq;
  33        unsigned long handle;
  34};
  35
  36struct intc_window {
  37        phys_addr_t phys;
  38        void __iomem *virt;
  39        unsigned long size;
  40};
  41
  42struct intc_map_entry {
  43        intc_enum enum_id;
  44        struct intc_desc_int *desc;
  45};
  46
  47struct intc_subgroup_entry {
  48        unsigned int pirq;
  49        intc_enum enum_id;
  50        unsigned long handle;
  51};
  52
  53struct intc_desc_int {
  54        struct list_head list;
  55        struct device dev;
  56        struct radix_tree_root tree;
  57        raw_spinlock_t lock;
  58        unsigned int index;
  59        unsigned long *reg;
  60#ifdef CONFIG_SMP
  61        unsigned long *smp;
  62#endif
  63        unsigned int nr_reg;
  64        struct intc_handle_int *prio;
  65        unsigned int nr_prio;
  66        struct intc_handle_int *sense;
  67        unsigned int nr_sense;
  68        struct intc_window *window;
  69        unsigned int nr_windows;
  70        struct irq_domain *domain;
  71        struct irq_chip chip;
  72        bool skip_suspend;
  73};
  74
  75
  76enum {
  77        REG_FN_ERR = 0,
  78        REG_FN_TEST_BASE = 1,
  79        REG_FN_WRITE_BASE = 5,
  80        REG_FN_MODIFY_BASE = 9
  81};
  82
  83enum {  MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
  84        MODE_MASK_REG,       /* Bit(s) set -> interrupt disabled */
  85        MODE_DUAL_REG,       /* Two registers, set bit to enable / disable */
  86        MODE_PRIO_REG,       /* Priority value written to enable interrupt */
  87        MODE_PCLR_REG,       /* Above plus all bits set to disable interrupt */
  88};
  89
  90static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
  91{
  92        struct irq_chip *chip = irq_get_chip(irq);
  93
  94        return container_of(chip, struct intc_desc_int, chip);
  95}
  96
  97/*
  98 * Grumble.
  99 */
 100static inline void activate_irq(int irq)
 101{
 102#ifdef CONFIG_ARM
 103        /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
 104         * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
 105         */
 106        set_irq_flags(irq, IRQF_VALID);
 107#else
 108        /* same effect on other architectures */
 109        irq_set_noprobe(irq);
 110#endif
 111}
 112
 113static inline int intc_handle_int_cmp(const void *a, const void *b)
 114{
 115        const struct intc_handle_int *_a = a;
 116        const struct intc_handle_int *_b = b;
 117
 118        return _a->irq - _b->irq;
 119}
 120
 121/* access.c */
 122extern unsigned long
 123(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data);
 124
 125extern unsigned long
 126(*intc_enable_fns[])(unsigned long addr, unsigned long handle,
 127                     unsigned long (*fn)(unsigned long,
 128                                unsigned long, unsigned long),
 129                     unsigned int irq);
 130extern unsigned long
 131(*intc_disable_fns[])(unsigned long addr, unsigned long handle,
 132                      unsigned long (*fn)(unsigned long,
 133                                unsigned long, unsigned long),
 134                      unsigned int irq);
 135extern unsigned long
 136(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle,
 137                            unsigned long (*fn)(unsigned long,
 138                                unsigned long, unsigned long),
 139                            unsigned int irq);
 140
 141unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address);
 142unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address);
 143unsigned int intc_set_field_from_handle(unsigned int value,
 144                            unsigned int field_value,
 145                            unsigned int handle);
 146unsigned long intc_get_field_from_handle(unsigned int value,
 147                                         unsigned int handle);
 148
 149/* balancing.c */
 150#ifdef CONFIG_INTC_BALANCING
 151void intc_balancing_enable(unsigned int irq);
 152void intc_balancing_disable(unsigned int irq);
 153void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 154                          struct intc_desc_int *d, intc_enum id);
 155#else
 156static inline void intc_balancing_enable(unsigned int irq) { }
 157static inline void intc_balancing_disable(unsigned int irq) { }
 158static inline void
 159intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 160                     struct intc_desc_int *d, intc_enum id) { }
 161#endif
 162
 163/* chip.c */
 164extern struct irq_chip intc_irq_chip;
 165void _intc_enable(struct irq_data *data, unsigned long handle);
 166
 167/* core.c */
 168extern struct list_head intc_list;
 169extern raw_spinlock_t intc_big_lock;
 170extern struct bus_type intc_subsys;
 171
 172unsigned int intc_get_dfl_prio_level(void);
 173unsigned int intc_get_prio_level(unsigned int irq);
 174void intc_set_prio_level(unsigned int irq, unsigned int level);
 175
 176/* handle.c */
 177unsigned int intc_get_mask_handle(struct intc_desc *desc,
 178                                  struct intc_desc_int *d,
 179                                  intc_enum enum_id, int do_grps);
 180unsigned int intc_get_prio_handle(struct intc_desc *desc,
 181                                  struct intc_desc_int *d,
 182                                  intc_enum enum_id, int do_grps);
 183unsigned int intc_get_sense_handle(struct intc_desc *desc,
 184                                   struct intc_desc_int *d,
 185                                   intc_enum enum_id);
 186void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc,
 187                         struct intc_desc_int *d, intc_enum id);
 188unsigned long intc_get_ack_handle(unsigned int irq);
 189void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
 190                              intc_enum enum_id, int enable);
 191
 192/* irqdomain.c */
 193void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw);
 194
 195/* virq.c */
 196void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
 197void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
 198struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);
 199