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/device.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 device dev;
  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        bool skip_suspend;
  71};
  72
  73
  74enum {
  75        REG_FN_ERR = 0,
  76        REG_FN_TEST_BASE = 1,
  77        REG_FN_WRITE_BASE = 5,
  78        REG_FN_MODIFY_BASE = 9
  79};
  80
  81enum {  MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
  82        MODE_MASK_REG,       /* Bit(s) set -> interrupt disabled */
  83        MODE_DUAL_REG,       /* Two registers, set bit to enable / disable */
  84        MODE_PRIO_REG,       /* Priority value written to enable interrupt */
  85        MODE_PCLR_REG,       /* Above plus all bits set to disable interrupt */
  86};
  87
  88static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
  89{
  90        struct irq_chip *chip = irq_get_chip(irq);
  91
  92        return container_of(chip, struct intc_desc_int, chip);
  93}
  94
  95/*
  96 * Grumble.
  97 */
  98static inline void activate_irq(int irq)
  99{
 100#ifdef CONFIG_ARM
 101        /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
 102         * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
 103         */
 104        set_irq_flags(irq, IRQF_VALID);
 105#else
 106        /* same effect on other architectures */
 107        irq_set_noprobe(irq);
 108#endif
 109}
 110
 111static inline int intc_handle_int_cmp(const void *a, const void *b)
 112{
 113        const struct intc_handle_int *_a = a;
 114        const struct intc_handle_int *_b = b;
 115
 116        return _a->irq - _b->irq;
 117}
 118
 119/* access.c */
 120extern unsigned long
 121(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data);
 122
 123extern unsigned long
 124(*intc_enable_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_disable_fns[])(unsigned long addr, unsigned long handle,
 130                      unsigned long (*fn)(unsigned long,
 131                                unsigned long, unsigned long),
 132                      unsigned int irq);
 133extern unsigned long
 134(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle,
 135                            unsigned long (*fn)(unsigned long,
 136                                unsigned long, unsigned long),
 137                            unsigned int irq);
 138
 139unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address);
 140unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address);
 141unsigned int intc_set_field_from_handle(unsigned int value,
 142                            unsigned int field_value,
 143                            unsigned int handle);
 144unsigned long intc_get_field_from_handle(unsigned int value,
 145                                         unsigned int handle);
 146
 147/* balancing.c */
 148#ifdef CONFIG_INTC_BALANCING
 149void intc_balancing_enable(unsigned int irq);
 150void intc_balancing_disable(unsigned int irq);
 151void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 152                          struct intc_desc_int *d, intc_enum id);
 153#else
 154static inline void intc_balancing_enable(unsigned int irq) { }
 155static inline void intc_balancing_disable(unsigned int irq) { }
 156static inline void
 157intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
 158                     struct intc_desc_int *d, intc_enum id) { }
 159#endif
 160
 161/* chip.c */
 162extern struct irq_chip intc_irq_chip;
 163void _intc_enable(struct irq_data *data, unsigned long handle);
 164
 165/* core.c */
 166extern struct list_head intc_list;
 167extern raw_spinlock_t intc_big_lock;
 168extern struct bus_type intc_subsys;
 169
 170unsigned int intc_get_dfl_prio_level(void);
 171unsigned int intc_get_prio_level(unsigned int irq);
 172void intc_set_prio_level(unsigned int irq, unsigned int level);
 173
 174/* handle.c */
 175unsigned int intc_get_mask_handle(struct intc_desc *desc,
 176                                  struct intc_desc_int *d,
 177                                  intc_enum enum_id, int do_grps);
 178unsigned int intc_get_prio_handle(struct intc_desc *desc,
 179                                  struct intc_desc_int *d,
 180                                  intc_enum enum_id, int do_grps);
 181unsigned int intc_get_sense_handle(struct intc_desc *desc,
 182                                   struct intc_desc_int *d,
 183                                   intc_enum enum_id);
 184void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc,
 185                         struct intc_desc_int *d, intc_enum id);
 186unsigned long intc_get_ack_handle(unsigned int irq);
 187void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
 188                              intc_enum enum_id, int enable);
 189
 190/* virq.c */
 191void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
 192void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
 193struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);
 194