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
  58 struct irq_data;
  59 struct irq_chip;
  60 struct irq_desc;
  61 extern unsigned int m68k_irq_startup(struct irq_data *data);
  62 extern unsigned int m68k_irq_startup_irq(unsigned int irq);
  63 extern void m68k_irq_shutdown(struct irq_data *data);
  64 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
  65                                                       struct pt_regs *));
  66 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
  67 extern void m68k_setup_irq_controller(struct irq_chip *,
  68                                       void (*handle)(struct irq_desc *desc),
  69                                       unsigned int irq, unsigned int cnt);
  70
  71 extern 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
  77 asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
  78 extern atomic_t irq_err_count;
  79
  80 #endif /* _M68K_IRQ_H_ */