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
19static 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
73static 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
83static 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 */
97void __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