arch/m68k/include/asm/irq.h

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