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> | |
| e3873444 | 20 | #include <linux/of_irq.h> |
| eedbdab9 MS |
21 | |
| 22 | #include <asm/prom.h> | |
| 23 | ||
| eedbdab9 MS |
24 | static u32 concurrent_irq; |
| 25 | ||
| e6d7961e | 26 | void __irq_entry do_IRQ(struct pt_regs *regs) |
| eedbdab9 MS |
27 | { |
| 28 | unsigned int irq; | |
| 29 | struct pt_regs *old_regs = set_irq_regs(regs); | |
| 0d9ec762 | 30 | trace_hardirqs_off(); |
| eedbdab9 MS |
31 | |
| 32 | irq_enter(); | |
| 33 | irq = get_irq(regs); | |
| 34 | next_irq: | |
| 35 | BUG_ON(irq == -1U); | |
| 36 | generic_handle_irq(irq); | |
| 37 | ||
| 38 | irq = get_irq(regs); | |
| 39 | if (irq != -1U) { | |
| 40 | pr_debug("next irq: %d\n", irq); | |
| 41 | ++concurrent_irq; | |
| 42 | goto next_irq; | |
| 43 | } | |
| 44 | ||
| 45 | irq_exit(); | |
| 46 | set_irq_regs(old_regs); | |
| 0d9ec762 | 47 | trace_hardirqs_on(); |
| eedbdab9 MS |
48 | } |
| 49 | ||
| c6ba01a4 MS |
50 | /* MS: There is no any advance mapping mechanism. We are using simple 32bit |
| 51 | intc without any cascades or any connection that's why mapping is 1:1 */ | |
| 52 | unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq) | |
| 53 | { | |
| 54 | return hwirq; | |
| 55 | } | |
| 56 | EXPORT_SYMBOL_GPL(irq_create_mapping); | |
| 57 | ||
| 58 | unsigned int irq_create_of_mapping(struct device_node *controller, | |
| e3873444 | 59 | const u32 *intspec, unsigned int intsize) |
| c6ba01a4 MS |
60 | { |
| 61 | return intspec[0]; | |
| 62 | } | |
| 63 | EXPORT_SYMBOL_GPL(irq_create_of_mapping); |