64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/ftrace.h>
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#include <linux/kernel.h>
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#include <linux/hardirq.h>
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#include <linux/interrupt.h>
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#include <linux/irqflags.h>
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#include <linux/seq_file.h>
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#include <linux/kernel_stat.h>
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#include <linux/irq.h>
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#include <linux/of_irq.h>
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#include <asm/prom.h>
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static u32 concurrent_irq;
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void __irq_entry do_IRQ(struct pt_regs *regs)
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{
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unsigned int irq;
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struct pt_regs *old_regs = set_irq_regs(regs);
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trace_hardirqs_off();
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irq_enter();
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irq = get_irq(regs);
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next_irq:
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BUG_ON(irq == -1U);
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generic_handle_irq(irq);
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irq = get_irq(regs);
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if (irq != -1U) {
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pr_debug("next irq: %d\n", irq);
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++concurrent_irq;
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goto next_irq;
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}
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irq_exit();
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set_irq_regs(old_regs);
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trace_hardirqs_on();
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}
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/* MS: There is no any advance mapping mechanism. We are using simple 32bit
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intc without any cascades or any connection that's why mapping is 1:1 */
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unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq)
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{
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return hwirq;
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}
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EXPORT_SYMBOL_GPL(irq_create_mapping);
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unsigned int irq_create_of_mapping(struct device_node *controller,
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const u32 *intspec, unsigned int intsize)
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{
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return intspec[0];
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}
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EXPORT_SYMBOL_GPL(irq_create_of_mapping);
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