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https://github.com/torvalds/linux
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2462bacd03
This patch converts Microblaze to use the irq_domain remapper and get away from hard coding the offset between hwirq number and the linux irq number space. This also paves the way for multiple interrupt controllers. v2: Don't enable SPARSE_IRQ and keep NR_IRQS set to 33 Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Michal Simek <monstr@monstr.eu> Cc: Rob Herring <rob.herring@calxeda.com> Cc: John Williams <john.williams@petalogix.com> Cc: John Linn <john.linn@xilinx.com>
49 lines
1 KiB
C
49 lines
1 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 <linux/export.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();
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next_irq:
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BUG_ON(!irq);
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generic_handle_irq(irq);
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irq = get_irq();
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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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