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

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#include <linux/platform_device.h>
   3
   4#include <asm/cpu_type.h>
   5
   6struct irq_bucket {
   7        struct irq_bucket *next;
   8        unsigned int real_irq;
   9        unsigned int irq;
  10        unsigned int pil;
  11};
  12
  13#define SUN4M_HARD_INT(x)       (0x000000001 << (x))
  14#define SUN4M_SOFT_INT(x)       (0x000010000 << (x))
  15
  16#define SUN4D_MAX_BOARD 10
  17#define SUN4D_MAX_IRQ ((SUN4D_MAX_BOARD + 2) << 5)
  18
  19/* Map between the irq identifier used in hw to the
  20 * irq_bucket. The map is sufficient large to hold
  21 * the sun4d hw identifiers.
  22 */
  23extern struct irq_bucket *irq_map[SUN4D_MAX_IRQ];
  24
  25
  26/* sun4m specific type definitions */
  27
  28/* This maps direct to CPU specific interrupt registers */
  29struct sun4m_irq_percpu {
  30        u32     pending;
  31        u32     clear;
  32        u32     set;
  33};
  34
  35/* This maps direct to global interrupt registers */
  36struct sun4m_irq_global {
  37        u32     pending;
  38        u32     mask;
  39        u32     mask_clear;
  40        u32     mask_set;
  41        u32     interrupt_target;
  42};
  43
  44extern struct sun4m_irq_percpu __iomem *sun4m_irq_percpu[SUN4M_NCPUS];
  45extern struct sun4m_irq_global __iomem *sun4m_irq_global;
  46
  47/* The following definitions describe the individual platform features: */
  48#define FEAT_L10_CLOCKSOURCE (1 << 0) /* L10 timer is used as a clocksource */
  49#define FEAT_L10_CLOCKEVENT  (1 << 1) /* L10 timer is used as a clockevent */
  50#define FEAT_L14_ONESHOT     (1 << 2) /* L14 timer clockevent can oneshot */
  51
  52/*
  53 * Platform specific configuration
  54 * The individual platforms assign their platform
  55 * specifics in their init functions.
  56 */
  57struct sparc_config {
  58        void (*init_timers)(void);
  59        unsigned int (*build_device_irq)(struct platform_device *op,
  60                                         unsigned int real_irq);
  61
  62        /* generic clockevent features - see FEAT_* above */
  63        int features;
  64
  65        /* clock rate used for clock event timer */
  66        int clock_rate;
  67
  68        /* one period for clock source timer */
  69        unsigned int cs_period;
  70
  71        /* function to obtain offsett for cs period */
  72        unsigned int (*get_cycles_offset)(void);
  73
  74        void (*clear_clock_irq)(void);
  75        void (*load_profile_irq)(int cpu, unsigned int limit);
  76};
  77extern struct sparc_config sparc_config;
  78
  79unsigned int irq_alloc(unsigned int real_irq, unsigned int pil);
  80void irq_link(unsigned int irq);
  81void irq_unlink(unsigned int irq);
  82void handler_irq(unsigned int pil, struct pt_regs *regs);
  83
  84unsigned long leon_get_irqmask(unsigned int irq);
  85
  86/* irq_32.c */
  87void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
  88
  89/* sun4m_irq.c */
  90void sun4m_nmi(struct pt_regs *regs);
  91
  92/* sun4d_irq.c */
  93void sun4d_handler_irq(unsigned int pil, struct pt_regs *regs);
  94
  95#ifdef CONFIG_SMP
  96
  97/* All SUN4D IPIs are sent on this IRQ, may be shared with hard IRQs */
  98#define SUN4D_IPI_IRQ 13
  99
 100void sun4d_ipi_interrupt(void);
 101
 102#endif
 103