irq.h

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    1 /*
    2  * This file is subject to the terms and conditions of the GNU General Public
    3  * License.  See the file "COPYING" in the main directory of this archive
    4  * for more details.
    5  *
    6  * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
    7  * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle
    8  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
    9  * Copyright (C) 2001 Kanoj Sarcar
   10  */
   11 #ifndef _ASM_IRQ_H
   12 #define _ASM_IRQ_H
   13 
   14 #include <linux/config.h>
   15 #include <linux/linkage.h>
   16 #include <asm/sn/arch.h>
   17 
   18 #define NR_IRQS 256
   19 
   20 /*
   21  * Number of levels in INT_PEND0. Can be set to 128 if we also
   22  * consider INT_PEND1.
   23  */
   24 #define PERNODE_LEVELS  64
   25 
   26 extern int node_level_to_irq[MAX_COMPACT_NODES][PERNODE_LEVELS];
   27 
   28 /*
   29  * we need to map irq's up to at least bit 7 of the INT_MASK0_A register
   30  * since bits 0-6 are pre-allocated for other purposes.
   31  */
   32 #define LEAST_LEVEL     7
   33 #define FAST_IRQ_TO_LEVEL(i)    ((i) + LEAST_LEVEL)
   34 #define LEVEL_TO_IRQ(c, l) \
   35                         (node_level_to_irq[CPUID_TO_COMPACT_NODEID(c)][(l)])
   36 
   37 #ifdef CONFIG_I8259
   38 static inline int irq_cannonicalize(int irq)
   39 {
   40         return ((irq == 2) ? 9 : irq);
   41 }
   42 #else
   43 #define irq_cannonicalize(irq) (irq)    /* Sane hardware, sane code ... */
   44 #endif
   45 
   46 extern void disable_irq(unsigned int);
   47 extern void disable_irq_nosync(unsigned int);
   48 extern void enable_irq(unsigned int);
   49 
   50 struct pt_regs;
   51 extern asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs);
   52 
   53 /* Machine specific interrupt initialization  */
   54 extern void (*irq_setup)(void);
   55 
   56 extern void init_generic_irq(void);
   57 
   58 #endif /* _ASM_IRQ_H */

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FreeBSD/Linux Kernel Cross Reference sys/include/asm-mips64/irq.h

FreeBSD/Linux Kernel Cross Reference
sys/include/asm-mips64/irq.h