1 /*
2 * linux/arch/sh/boards/se/770x/irq.c
3 *
4 * Copyright (C) 2000 Kazumoto Kojima
5 * Copyright (C) 2006 Nobuhiro Iwamatsu
6 *
7 * Hitachi SolutionEngine Support.
8 *
9 */
10
11 #include <linux/init.h>
12 #include <linux/interrupt.h>
13 #include <linux/irq.h>
14 #include <asm/irq.h>
15 #include <asm/io.h>
16 #include <mach-se/mach/se.h>
17
18 static struct ipr_data ipr_irq_table[] = {
19 /*
20 * Super I/O (Just mimic PC):
21 * 1: keyboard
22 * 3: serial 0
23 * 4: serial 1
24 * 5: printer
25 * 6: floppy
26 * 8: rtc
27 * 12: mouse
28 * 14: ide0
29 */
30 #if defined(CONFIG_CPU_SUBTYPE_SH7705)
31 /* This is default value */
32 { 13, 0, 8, 0x0f-13, },
33 { 5 , 0, 4, 0x0f- 5, },
34 { 10, 1, 0, 0x0f-10, },
35 { 7 , 2, 4, 0x0f- 7, },
36 { 3 , 2, 0, 0x0f- 3, },
37 { 1 , 3, 12, 0x0f- 1, },
38 { 12, 3, 4, 0x0f-12, }, /* LAN */
39 { 2 , 4, 8, 0x0f- 2, }, /* PCIRQ2 */
40 { 6 , 4, 4, 0x0f- 6, }, /* PCIRQ1 */
41 { 14, 4, 0, 0x0f-14, }, /* PCIRQ0 */
42 { 0 , 5, 12, 0x0f , },
43 { 4 , 5, 4, 0x0f- 4, },
44 { 8 , 6, 12, 0x0f- 8, },
45 { 9 , 6, 8, 0x0f- 9, },
46 { 11, 6, 4, 0x0f-11, },
47 #else
48 { 14, 0, 8, 0x0f-14, },
49 { 12, 0, 4, 0x0f-12, },
50 { 8, 1, 4, 0x0f- 8, },
51 { 6, 2, 12, 0x0f- 6, },
52 { 5, 2, 8, 0x0f- 5, },
53 { 4, 2, 4, 0x0f- 4, },
54 { 3, 2, 0, 0x0f- 3, },
55 { 1, 3, 12, 0x0f- 1, },
56 #if defined(CONFIG_STNIC)
57 /* ST NIC */
58 { 10, 3, 4, 0x0f-10, }, /* LAN */
59 #endif
60 /* MRSHPC IRQs setting */
61 { 0, 4, 12, 0x0f- 0, }, /* PCIRQ3 */
62 { 11, 4, 8, 0x0f-11, }, /* PCIRQ2 */
63 { 9, 4, 4, 0x0f- 9, }, /* PCIRQ1 */
64 { 7, 4, 0, 0x0f- 7, }, /* PCIRQ0 */
65 /* #2, #13 are allocated for SLOT IRQ #1 and #2 (for now) */
66 /* NOTE: #2 and #13 are not used on PC */
67 { 13, 6, 4, 0x0f-13, }, /* SLOTIRQ2 */
68 { 2, 6, 0, 0x0f- 2, }, /* SLOTIRQ1 */
69 #endif
70 };
71
72 static unsigned long ipr_offsets[] = {
73 BCR_ILCRA,
74 BCR_ILCRB,
75 BCR_ILCRC,
76 BCR_ILCRD,
77 BCR_ILCRE,
78 BCR_ILCRF,
79 BCR_ILCRG,
80 };
81
82 static struct ipr_desc ipr_irq_desc = {
83 .ipr_offsets = ipr_offsets,
84 .nr_offsets = ARRAY_SIZE(ipr_offsets),
85
86 .ipr_data = ipr_irq_table,
87 .nr_irqs = ARRAY_SIZE(ipr_irq_table),
88 .chip = {
89 .name = "IPR-se770x",
90 },
91 };
92
93 /*
94 * Initialize IRQ setting
95 */
init_se_IRQ(void)96 void __init init_se_IRQ(void)
97 {
98 /* Disable all interrupts */
99 __raw_writew(0, BCR_ILCRA);
100 __raw_writew(0, BCR_ILCRB);
101 __raw_writew(0, BCR_ILCRC);
102 __raw_writew(0, BCR_ILCRD);
103 __raw_writew(0, BCR_ILCRE);
104 __raw_writew(0, BCR_ILCRF);
105 __raw_writew(0, BCR_ILCRG);
106
107 register_ipr_controller(&ipr_irq_desc);
108 }
109