c87abd75b3
Cleanup jmr3927, tx4927 and tx4938 irq codes, using common IRQ_CPU, I8259 and IRQ_TXX9 irq routines. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* linux/arch/mips/tx4938/common/irq.c
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*
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* Common tx4938 irq handler
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* Copyright (C) 2000-2001 Toshiba Corporation
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*
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* 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
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* terms of the GNU General Public License version 2. This program is
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* licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*
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* Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <asm/irq_cpu.h>
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#include <asm/mipsregs.h>
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#include <asm/tx4938/rbtx4938.h>
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void __init
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tx4938_irq_init(void)
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{
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mips_cpu_irq_init();
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txx9_irq_init(TX4938_IRC_REG);
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set_irq_chained_handler(TX4938_IRQ_NEST_PIC_ON_CP0, handle_simple_irq);
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}
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int toshiba_rbtx4938_irq_nested(int irq);
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asmlinkage void plat_irq_dispatch(void)
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{
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unsigned int pending = read_c0_cause() & read_c0_status();
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if (pending & STATUSF_IP7)
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do_IRQ(TX4938_IRQ_CPU_TIMER);
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else if (pending & STATUSF_IP2) {
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int irq = txx9_irq();
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if (irq == TX4938_IRQ_PIC_BEG + TX4938_IR_INT(0))
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irq = toshiba_rbtx4938_irq_nested(irq);
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if (irq >= 0)
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do_IRQ(irq);
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else
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spurious_interrupt();
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} else if (pending & STATUSF_IP1)
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do_IRQ(TX4938_IRQ_USER1);
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else if (pending & STATUSF_IP0)
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do_IRQ(TX4938_IRQ_USER0);
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}
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