diff options
Diffstat (limited to 'arch/arm26/machine/irq.c')
-rw-r--r-- | arch/arm26/machine/irq.c | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/arch/arm26/machine/irq.c b/arch/arm26/machine/irq.c deleted file mode 100644 index a60d543edecc..000000000000 --- a/arch/arm26/machine/irq.c +++ /dev/null | |||
@@ -1,164 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/arm26/mach-arc/irq.c | ||
3 | * | ||
4 | * Copyright (C) 1996 Russell King | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | * | ||
10 | * Changelog: | ||
11 | * 24-09-1996 RMK Created | ||
12 | * 10-10-1996 RMK Brought up to date with arch-sa110eval | ||
13 | * 22-10-1996 RMK Changed interrupt numbers & uses new inb/outb macros | ||
14 | * 11-01-1998 RMK Added mask_and_ack_irq | ||
15 | * 22-08-1998 RMK Restructured IRQ routines | ||
16 | * 08-09-2002 IM Brought up to date for 2.5 | ||
17 | * 01-06-2003 JMA Removed arc_fiq_chip | ||
18 | */ | ||
19 | #include <linux/init.h> | ||
20 | |||
21 | #include <asm/irq.h> | ||
22 | #include <asm/irqchip.h> | ||
23 | #include <asm/ioc.h> | ||
24 | #include <asm/io.h> | ||
25 | #include <asm/system.h> | ||
26 | |||
27 | extern void init_FIQ(void); | ||
28 | |||
29 | #define a_clf() clf() | ||
30 | #define a_stf() stf() | ||
31 | |||
32 | static void arc_ack_irq_a(unsigned int irq) | ||
33 | { | ||
34 | unsigned int val, mask; | ||
35 | |||
36 | mask = 1 << irq; | ||
37 | a_clf(); | ||
38 | val = ioc_readb(IOC_IRQMASKA); | ||
39 | ioc_writeb(val & ~mask, IOC_IRQMASKA); | ||
40 | ioc_writeb(mask, IOC_IRQCLRA); | ||
41 | a_stf(); | ||
42 | } | ||
43 | |||
44 | static void arc_mask_irq_a(unsigned int irq) | ||
45 | { | ||
46 | unsigned int val, mask; | ||
47 | |||
48 | mask = 1 << irq; | ||
49 | a_clf(); | ||
50 | val = ioc_readb(IOC_IRQMASKA); | ||
51 | ioc_writeb(val & ~mask, IOC_IRQMASKA); | ||
52 | a_stf(); | ||
53 | } | ||
54 | |||
55 | static void arc_unmask_irq_a(unsigned int irq) | ||
56 | { | ||
57 | unsigned int val, mask; | ||
58 | |||
59 | mask = 1 << irq; | ||
60 | a_clf(); | ||
61 | val = ioc_readb(IOC_IRQMASKA); | ||
62 | ioc_writeb(val | mask, IOC_IRQMASKA); | ||
63 | a_stf(); | ||
64 | } | ||
65 | |||
66 | static struct irqchip arc_a_chip = { | ||
67 | .ack = arc_ack_irq_a, | ||
68 | .mask = arc_mask_irq_a, | ||
69 | .unmask = arc_unmask_irq_a, | ||
70 | }; | ||
71 | |||
72 | static void arc_mask_irq_b(unsigned int irq) | ||
73 | { | ||
74 | unsigned int val, mask; | ||
75 | mask = 1 << (irq & 7); | ||
76 | val = ioc_readb(IOC_IRQMASKB); | ||
77 | ioc_writeb(val & ~mask, IOC_IRQMASKB); | ||
78 | } | ||
79 | |||
80 | static void arc_unmask_irq_b(unsigned int irq) | ||
81 | { | ||
82 | unsigned int val, mask; | ||
83 | |||
84 | mask = 1 << (irq & 7); | ||
85 | val = ioc_readb(IOC_IRQMASKB); | ||
86 | ioc_writeb(val | mask, IOC_IRQMASKB); | ||
87 | } | ||
88 | |||
89 | static struct irqchip arc_b_chip = { | ||
90 | .ack = arc_mask_irq_b, | ||
91 | .mask = arc_mask_irq_b, | ||
92 | .unmask = arc_unmask_irq_b, | ||
93 | }; | ||
94 | |||
95 | /* FIXME - JMA none of these functions are used in arm26 currently | ||
96 | static void arc_mask_irq_fiq(unsigned int irq) | ||
97 | { | ||
98 | unsigned int val, mask; | ||
99 | |||
100 | mask = 1 << (irq & 7); | ||
101 | val = ioc_readb(IOC_FIQMASK); | ||
102 | ioc_writeb(val & ~mask, IOC_FIQMASK); | ||
103 | } | ||
104 | |||
105 | static void arc_unmask_irq_fiq(unsigned int irq) | ||
106 | { | ||
107 | unsigned int val, mask; | ||
108 | |||
109 | mask = 1 << (irq & 7); | ||
110 | val = ioc_readb(IOC_FIQMASK); | ||
111 | ioc_writeb(val | mask, IOC_FIQMASK); | ||
112 | } | ||
113 | |||
114 | static struct irqchip arc_fiq_chip = { | ||
115 | .ack = arc_mask_irq_fiq, | ||
116 | .mask = arc_mask_irq_fiq, | ||
117 | .unmask = arc_unmask_irq_fiq, | ||
118 | }; | ||
119 | */ | ||
120 | |||
121 | void __init arc_init_irq(void) | ||
122 | { | ||
123 | unsigned int irq, flags; | ||
124 | |||
125 | /* Disable all IOC interrupt sources */ | ||
126 | ioc_writeb(0, IOC_IRQMASKA); | ||
127 | ioc_writeb(0, IOC_IRQMASKB); | ||
128 | ioc_writeb(0, IOC_FIQMASK); | ||
129 | |||
130 | for (irq = 0; irq < NR_IRQS; irq++) { | ||
131 | flags = IRQF_VALID; | ||
132 | |||
133 | if (irq <= 6 || (irq >= 9 && irq <= 15)) | ||
134 | flags |= IRQF_PROBE; | ||
135 | |||
136 | if (irq == IRQ_KEYBOARDTX) | ||
137 | flags |= IRQF_NOAUTOEN; | ||
138 | |||
139 | switch (irq) { | ||
140 | case 0 ... 7: | ||
141 | set_irq_chip(irq, &arc_a_chip); | ||
142 | set_irq_handler(irq, do_level_IRQ); | ||
143 | set_irq_flags(irq, flags); | ||
144 | break; | ||
145 | |||
146 | case 8 ... 15: | ||
147 | set_irq_chip(irq, &arc_b_chip); | ||
148 | set_irq_handler(irq, do_level_IRQ); | ||
149 | set_irq_flags(irq, flags); | ||
150 | |||
151 | /* case 64 ... 72: | ||
152 | set_irq_chip(irq, &arc_fiq_chip); | ||
153 | set_irq_flags(irq, flags); | ||
154 | break; | ||
155 | */ | ||
156 | |||
157 | } | ||
158 | } | ||
159 | |||
160 | irq_desc[IRQ_KEYBOARDTX].noautoenable = 1; | ||
161 | |||
162 | init_FIQ(); | ||
163 | } | ||
164 | |||