projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| eedbdab9 MS |
1 | /* |
| 2 | * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> | |
| 3 | * Copyright (C) 2007-2009 PetaLogix | |
| 4 | * Copyright (C) 2006 Atmark Techno, Inc. | |
| 5 | * | |
| 6 | * This file is subject to the terms and conditions of the GNU General Public | |
| 7 | * License. See the file "COPYING" in the main directory of this archive | |
| 8 | * for more details. | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/init.h> | |
| e6d7961e | 12 | #include <linux/ftrace.h> |
| eedbdab9 MS |
13 | #include <linux/kernel.h> |
| 14 | #include <linux/hardirq.h> | |
| 15 | #include <linux/interrupt.h> | |
| 16 | #include <linux/irqflags.h> | |
| 17 | #include <linux/seq_file.h> | |
| 18 | #include <linux/kernel_stat.h> | |
| 19 | #include <linux/irq.h> | |
| 8a9e90a1 | 20 | #include <linux/irqchip.h> |
| e3873444 | 21 | #include <linux/of_irq.h> |
| eedbdab9 | 22 | |
| eedbdab9 MS |
23 | static u32 concurrent_irq; |
| 24 | ||
| e6d7961e | 25 | void __irq_entry do_IRQ(struct pt_regs *regs) |
| eedbdab9 MS |
26 | { |
| 27 | unsigned int irq; | |
| 28 | struct pt_regs *old_regs = set_irq_regs(regs); | |
| 0d9ec762 | 29 | trace_hardirqs_off(); |
| eedbdab9 MS |
30 | |
| 31 | irq_enter(); | |
| 2462bacd | 32 | irq = get_irq(); |
| eedbdab9 | 33 | next_irq: |
| 6c7a2676 | 34 | BUG_ON(!irq); |
| 2462bacd | 35 | generic_handle_irq(irq); |
| eedbdab9 | 36 | |
| 2462bacd GL |
37 | irq = get_irq(); |
| 38 | if (irq != -1U) { | |
| eedbdab9 MS |
39 | pr_debug("next irq: %d\n", irq); |
| 40 | ++concurrent_irq; | |
| 41 | goto next_irq; | |
| 42 | } | |
| 43 | ||
| 44 | irq_exit(); | |
| 45 | set_irq_regs(old_regs); | |
| 0d9ec762 | 46 | trace_hardirqs_on(); |
| eedbdab9 | 47 | } |
| 8a9e90a1 MS |
48 | |
| 49 | void __init init_IRQ(void) | |
| 50 | { | |
| 51 | /* process the entire interrupt tree in one go */ | |
| 52 | irqchip_init(); | |
| 53 | } |