| /* | |
| * 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 <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(regs); | |
| next_irq: | |
| BUG_ON(irq == -1U); | |
| generic_handle_irq(irq); | |
| irq = get_irq(regs); | |
| 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(); | |
| } | |
| /* MS: There is no any advance mapping mechanism. We are using simple 32bit | |
| intc without any cascades or any connection that's why mapping is 1:1 */ | |
| unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq) | |
| { | |
| return hwirq; | |
| } | |
| EXPORT_SYMBOL_GPL(irq_create_mapping); | |
| unsigned int irq_create_of_mapping(struct device_node *controller, | |
| const u32 *intspec, unsigned int intsize) | |
| { | |
| return intspec[0]; | |
| } | |
| EXPORT_SYMBOL_GPL(irq_create_of_mapping); |