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

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