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    [MIPS] Define MIPS_CPU_IRQ_BASE in generic header · 97dcb82d
    Atsushi Nemoto 提交于
    The irq_base for {mips,rm7k,rm9k}_cpu_irq_init() are constant on all
    platforms and are same value on most platforms (0 or 16, depends on
    CONFIG_I8259).  Define them in asm-mips/mach-generic/irq.h and make
    them customizable.  This will save a few cycle on each CPU interrupt.
    
    A good side effect is removing some dependencies to MALTA in generic
    SMTC code.
    
    Although MIPS_CPU_IRQ_BASE is customizable, this patch changes irq
    mappings on DDB5477, EMMA2RH and MIPS_SIM, since really customizing
    them might cause some header dependency problem and there seems no
    good reason to customize it.  So currently only VR41XX is using custom
    MIPS_CPU_IRQ_BASE value, which is 0 regardless of CONFIG_I8259.
    
    Testing this patch on those platforms is greatly appreciated.  Thank
    you.
    Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
    Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
    97dcb82d
irq_cpu.h 561 字节
/*
 *	include/asm-mips/irq_cpu.h
 *
 *	MIPS CPU interrupt definitions.
 *
 *	Copyright (C) 2002  Maciej W. Rozycki
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 */
#ifndef _ASM_IRQ_CPU_H
#define _ASM_IRQ_CPU_H

extern void mips_cpu_irq_init(void);
extern void rm7k_cpu_irq_init(void);
extern void rm9k_cpu_irq_init(void);

#endif /* _ASM_IRQ_CPU_H */