Root/
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> |
12 | #include <linux/ftrace.h> |
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> |
20 | #include <linux/of_irq.h> |
21 | |
22 | #include <asm/prom.h> |
23 | |
24 | static u32 concurrent_irq; |
25 | |
26 | void __irq_entry do_IRQ(struct pt_regs *regs) |
27 | { |
28 | unsigned int irq; |
29 | struct pt_regs *old_regs = set_irq_regs(regs); |
30 | trace_hardirqs_off(); |
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); |
47 | trace_hardirqs_on(); |
48 | } |
49 | |
50 | int show_interrupts(struct seq_file *p, void *v) |
51 | { |
52 | int i = *(loff_t *) v, j; |
53 | struct irqaction *action; |
54 | unsigned long flags; |
55 | |
56 | if (i == 0) { |
57 | seq_printf(p, " "); |
58 | for_each_online_cpu(j) |
59 | seq_printf(p, "CPU%-8d", j); |
60 | seq_putc(p, '\n'); |
61 | } |
62 | |
63 | if (i < nr_irq) { |
64 | raw_spin_lock_irqsave(&irq_desc[i].lock, flags); |
65 | action = irq_desc[i].action; |
66 | if (!action) |
67 | goto skip; |
68 | seq_printf(p, "%3d: ", i); |
69 | #ifndef CONFIG_SMP |
70 | seq_printf(p, "%10u ", kstat_irqs(i)); |
71 | #else |
72 | for_each_online_cpu(j) |
73 | seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]); |
74 | #endif |
75 | seq_printf(p, " %8s", irq_desc[i].status & |
76 | IRQ_LEVEL ? "level" : "edge"); |
77 | seq_printf(p, " %8s", irq_desc[i].chip->name); |
78 | seq_printf(p, " %s", action->name); |
79 | |
80 | for (action = action->next; action; action = action->next) |
81 | seq_printf(p, ", %s", action->name); |
82 | |
83 | seq_putc(p, '\n'); |
84 | skip: |
85 | raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags); |
86 | } |
87 | return 0; |
88 | } |
89 | |
90 | /* MS: There is no any advance mapping mechanism. We are using simple 32bit |
91 | intc without any cascades or any connection that's why mapping is 1:1 */ |
92 | unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq) |
93 | { |
94 | return hwirq; |
95 | } |
96 | EXPORT_SYMBOL_GPL(irq_create_mapping); |
97 | |
98 | unsigned int irq_create_of_mapping(struct device_node *controller, |
99 | const u32 *intspec, unsigned int intsize) |
100 | { |
101 | return intspec[0]; |
102 | } |
103 | EXPORT_SYMBOL_GPL(irq_create_of_mapping); |
104 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9