1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * linux/arch/sh/boards/se/770x/irq.c
4 *
5 * Copyright (C) 2000 Kazumoto Kojima
6 * Copyright (C) 2006 Nobuhiro Iwamatsu
7 *
8 * Hitachi SolutionEngine Support.
9 *
10 */
11
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/irq.h>
15 #include <asm/irq.h>
16 #include <asm/io.h>
17 #include <mach-se/mach/se.h>
18
19 static struct ipr_data ipr_irq_table[] = {
20 /*
21 * Super I/O (Just mimic PC):
22 * 1: keyboard
23 * 3: serial 0
24 * 4: serial 1
25 * 5: printer
26 * 6: floppy
27 * 8: rtc
28 * 12: mouse
29 * 14: ide0
30 */
31 #if defined(CONFIG_CPU_SUBTYPE_SH7705)
32 /* This is default value */
33 { 13, 0, 8, 0x0f-13, },
34 { 5 , 0, 4, 0x0f- 5, },
35 { 10, 1, 0, 0x0f-10, },
36 { 7 , 2, 4, 0x0f- 7, },
37 { 3 , 2, 0, 0x0f- 3, },
38 { 1 , 3, 12, 0x0f- 1, },
39 { 12, 3, 4, 0x0f-12, }, /* LAN */
40 { 2 , 4, 8, 0x0f- 2, }, /* PCIRQ2 */
41 { 6 , 4, 4, 0x0f- 6, }, /* PCIRQ1 */
42 { 14, 4, 0, 0x0f-14, }, /* PCIRQ0 */
43 { 0 , 5, 12, 0x0f , },
44 { 4 , 5, 4, 0x0f- 4, },
45 { 8 , 6, 12, 0x0f- 8, },
46 { 9 , 6, 8, 0x0f- 9, },
47 { 11, 6, 4, 0x0f-11, },
48 #else
49 { 14, 0, 8, 0x0f-14, },
50 { 12, 0, 4, 0x0f-12, },
51 { 8, 1, 4, 0x0f- 8, },
52 { 6, 2, 12, 0x0f- 6, },
53 { 5, 2, 8, 0x0f- 5, },
54 { 4, 2, 4, 0x0f- 4, },
55 { 3, 2, 0, 0x0f- 3, },
56 { 1, 3, 12, 0x0f- 1, },
57 #if defined(CONFIG_STNIC)
58 /* ST NIC */
59 { 10, 3, 4, 0x0f-10, }, /* LAN */
60 #endif
61 /* MRSHPC IRQs setting */
62 { 0, 4, 12, 0x0f- 0, }, /* PCIRQ3 */
63 { 11, 4, 8, 0x0f-11, }, /* PCIRQ2 */
64 { 9, 4, 4, 0x0f- 9, }, /* PCIRQ1 */
65 { 7, 4, 0, 0x0f- 7, }, /* PCIRQ0 */
66 /* #2, #13 are allocated for SLOT IRQ #1 and #2 (for now) */
67 /* NOTE: #2 and #13 are not used on PC */
68 { 13, 6, 4, 0x0f-13, }, /* SLOTIRQ2 */
69 { 2, 6, 0, 0x0f- 2, }, /* SLOTIRQ1 */
70 #endif
71 };
72
73 static unsigned long ipr_offsets[] = {
74 BCR_ILCRA,
75 BCR_ILCRB,
76 BCR_ILCRC,
77 BCR_ILCRD,
78 BCR_ILCRE,
79 BCR_ILCRF,
80 BCR_ILCRG,
81 };
82
83 static struct ipr_desc ipr_irq_desc = {
84 .ipr_offsets = ipr_offsets,
85 .nr_offsets = ARRAY_SIZE(ipr_offsets),
86
87 .ipr_data = ipr_irq_table,
88 .nr_irqs = ARRAY_SIZE(ipr_irq_table),
89 .chip = {
90 .name = "IPR-se770x",
91 },
92 };
93
94 /*
95 * Initialize IRQ setting
96 */
97 void __init init_se_IRQ(void)
98 {
99 /* Disable all interrupts */
100 __raw_writew(0, BCR_ILCRA);
101 __raw_writew(0, BCR_ILCRB);
102 __raw_writew(0, BCR_ILCRC);
103 __raw_writew(0, BCR_ILCRD);
104 __raw_writew(0, BCR_ILCRE);
105 __raw_writew(0, BCR_ILCRF);
106 __raw_writew(0, BCR_ILCRG);
107
108 register_ipr_controller(&ipr_irq_desc);
109 }
110
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