diff options
Diffstat (limited to 'arch/microblaze/kernel/irq.c')
| -rw-r--r-- | arch/microblaze/kernel/irq.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c new file mode 100644 index 000000000..903dad822 --- /dev/null +++ b/arch/microblaze/kernel/irq.c @@ -0,0 +1,53 @@ +/* + * 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/irqchip.h> +#include <linux/of_irq.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 = xintc_get_irq(); +next_irq: + BUG_ON(!irq); + generic_handle_irq(irq); + + irq = xintc_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(); +} + +void __init init_IRQ(void) +{ + /* process the entire interrupt tree in one go */ + irqchip_init(); +} |