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