mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
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
/*
|
|
* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
|
|
* Copyright (C) 2007-2009 PetaLogix
|
|
* Copyright (C) 2006 Atmark Techno, Inc.
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/ftrace.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irqflags.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/of_irq.h>
|
|
#include <linux/export.h>
|
|
|
|
#include <asm/prom.h>
|
|
|
|
static u32 concurrent_irq;
|
|
|
|
void __irq_entry do_IRQ(struct pt_regs *regs)
|
|
{
|
|
unsigned int irq;
|
|
struct pt_regs *old_regs = set_irq_regs(regs);
|
|
trace_hardirqs_off();
|
|
|
|
irq_enter();
|
|
irq = get_irq();
|
|
next_irq:
|
|
BUG_ON(!irq);
|
|
generic_handle_irq(irq);
|
|
|
|
irq = get_irq();
|
|
if (irq != -1U) {
|
|
pr_debug("next irq: %d\n", irq);
|
|
++concurrent_irq;
|
|
goto next_irq;
|
|
}
|
|
|
|
irq_exit();
|
|
set_irq_regs(old_regs);
|
|
trace_hardirqs_on();
|
|
}
|