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Linux/arch/m68k/include/asm/irq.h

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  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_ */
 81 

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