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

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  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)(unsigned int irq,
 68                                                      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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