LXR linux/arch/sparc/kernel/irq.h

   1#include <linux/platform_device.h>
   2
   3#include <asm/cpu_type.h>
   4
   5struct irq_bucket {
   6        struct irq_bucket *next;
   7        unsigned int real_irq;
   8        unsigned int irq;
   9        unsigned int pil;
  10};
  11
  12#define SUN4M_HARD_INT(x)       (0x000000001 << (x))
  13#define SUN4M_SOFT_INT(x)       (0x000010000 << (x))
  14
  15#define SUN4D_MAX_BOARD 10
  16#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
  17
  18/* Map between the irq identifier used in hw to the
  19 * irq_bucket. The map is sufficient large to hold
  20 * the sun4d hw identifiers.
  21 */
  22extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
  23
  24
  25/* sun4m specific type definitions */
  26
  27/* This maps direct to CPU specific interrupt registers */
  28struct sun4m_irq_percpu {
  29        u32     pending;
  30        u32     clear;
  31        u32     set;
  32};
  33
  34/* This maps direct to global interrupt registers */
  35struct sun4m_irq_global {
  36        u32     pending;
  37        u32     mask;
  38        u32     mask_clear;
  39        u32     mask_set;
  40        u32     interrupt_target;
  41};
  42
  43extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
  44extern struct sun4m_irq_global __iomem *sun4m_irq_global;
  45
  46/* The following definitions describe the individual platform features: */
  47#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
  48#define FEAT_L10_CLOCKEVENT  (1 << 1) /* L10 timer is used as a clockevent */
  49#define FEAT_L14_ONESHOT     (1 << 2) /* L14 timer clockevent can oneshot */
  50
  51/*
  52 * Platform specific configuration
  53 * The individual platforms assign their platform
  54 * specifics in their init functions.
  55 */
  56struct sparc_config {
  57        void (*init_timers)(void);
  58        unsigned int (*build_device_irq)(struct platform_device *op,
  59                                         unsigned int real_irq);
  60
  61        /* generic clockevent features - see FEAT_* above */
  62        int features;
  63
  64        /* clock rate used for clock event timer */
  65        int clock_rate;
  66
  67        /* one period for clock source timer */
  68        unsigned int cs_period;
  69
  70        /* function to obtain offsett for cs period */
  71        unsigned int (*get_cycles_offset)(void);
  72
  73        void (*clear_clock_irq)(void);
  74        void (*load_profile_irq)(int cpu, unsigned int limit);
  75};
  76extern struct sparc_config sparc_config;
  77
  78unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
  79void irq_link(unsigned int irq);
  80void irq_unlink(unsigned int irq);
  81void handler_irq(unsigned int pil, struct pt_regs *regs);
  82
  83unsigned long leon_get_irqmask(unsigned int irq);
  84
  85#ifdef CONFIG_SMP
  86
  87/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
  88#define SUN4D_IPI_IRQ 13
  89
  90extern void sun4d_ipi_interrupt(void);
  91
  92#endif
  93