LXR linux/arch/m68k/include/asm/irq.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _M68K_IRQ_H_
   3#define _M68K_IRQ_H_
   4
   5/*
   6 * This should be the same as the max(NUM_X_SOURCES) for all the
   7 * different m68k hosts compiled into the kernel.
   8 * Currently the Atari has 72 and the Amiga 24, but if both are
   9 * supported in the kernel it is better to make room for 72.
  10 * With EtherNAT add-on card on Atari, the highest interrupt
  11 * number is 140 so NR_IRQS needs to be 141.
  12 */
  13#if defined(CONFIG_COLDFIRE)
  14#define NR_IRQS 256
  15#elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
  16#define NR_IRQS 200
  17#elif defined(CONFIG_ATARI)
  18#define NR_IRQS 141
  19#elif defined(CONFIG_MAC)
  20#define NR_IRQS 72
  21#elif defined(CONFIG_Q40)
  22#define NR_IRQS 43
  23#elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
  24#define NR_IRQS 32
  25#elif defined(CONFIG_APOLLO)
  26#define NR_IRQS 24
  27#elif defined(CONFIG_HP300)
  28#define NR_IRQS 8
  29#else
  30#define NR_IRQS 0
  31#endif
  32
  33#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
  34    defined(CONFIG_M68040) || defined(CONFIG_M68060)
  35
  36/*
  37 * Interrupt source definitions
  38 * General interrupt sources are the level 1-7.
  39 * Adding an interrupt service routine for one of these sources
  40 * results in the addition of that routine to a chain of routines.
  41 * Each one is called in succession.  Each individual interrupt
  42 * service routine should determine if the device associated with
  43 * that routine requires service.
  44 */
  45
  46#define IRQ_SPURIOUS    0
  47
  48#define IRQ_AUTO_1      1       /* level 1 interrupt */
  49#define IRQ_AUTO_2      2       /* level 2 interrupt */
  50#define IRQ_AUTO_3      3       /* level 3 interrupt */
  51#define IRQ_AUTO_4      4       /* level 4 interrupt */
  52#define IRQ_AUTO_5      5       /* level 5 interrupt */
  53#define IRQ_AUTO_6      6       /* level 6 interrupt */
  54#define IRQ_AUTO_7      7       /* level 7 interrupt (non-maskable) */
  55
  56#define IRQ_USER        8
  57
  58struct irq_data;
  59struct irq_chip;
  60struct irq_desc;
  61extern unsigned int m68k_irq_startup(struct irq_data *data);
  62extern unsigned int m68k_irq_startup_irq(unsigned int irq);
  63extern void m68k_irq_shutdown(struct irq_data *data);
  64extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
  65                                                      struct pt_regs *));
  66extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
  67extern void m68k_setup_irq_controller(struct irq_chip *,
  68                                      void (*handle)(struct irq_desc *desc),
  69                                      unsigned int irq, unsigned int cnt);
  70
  71extern unsigned int irq_canonicalize(unsigned int irq);
  72
  73#else
  74#define irq_canonicalize(irq)  (irq)
  75#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
  76
  77asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
  78extern atomic_t irq_err_count;
  79
  80#endif /* _M68K_IRQ_H_ */
  81