summaryrefslogtreecommitdiffstats
path: root/arch/sh/boards/se/73180/irq.c
blob: 4344d0ef24aa05ea8845632e8996bb3d15f570c7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
/*
 * arch/sh/boards/se/73180/irq.c
 *
 * Copyright (C) 2003 Takashi Kusuda <kusuda-takashi@hitachi-ul.co.jp>
 * Based on arch/sh/boards/se/7300/irq.c
 *
 * Modified for SH-Mobile SolutionEngine 73180 Support
 *              by YOSHII Takashi <yoshii-takashi@hitachi-ul.co.jp>
 *
 *
 */

#include <linux/init.h>
#include <linux/irq.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/mach/se73180.h>

static int
intreq2irq(int i)
{
	if (i == 5)
		return 10;
	return 32 + 7 - i;
}

static int
irq2intreq(int irq)
{
	if (irq == 10)
		return 5;
	return 7 - (irq - 32);
}

static void
disable_intreq_irq(unsigned int irq)
{
	ctrl_outb(1 << (7 - irq2intreq(irq)), INTMSK0);
}

static void
enable_intreq_irq(unsigned int irq)
{
	ctrl_outb(1 << (7 - irq2intreq(irq)), INTMSKCLR0);
}

static void
mask_and_ack_intreq_irq(unsigned int irq)
{
	disable_intreq_irq(irq);
}

static unsigned int
startup_intreq_irq(unsigned int irq)
{
	enable_intreq_irq(irq);
	return 0;
}

static void
shutdown_intreq_irq(unsigned int irq)
{
	disable_intreq_irq(irq);
}

static void
end_intreq_irq(unsigned int irq)
{
	if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
		enable_intreq_irq(irq);
}

static struct hw_interrupt_type intreq_irq_type = {
	.typename = "intreq",
	.startup = startup_intreq_irq,
	.shutdown = shutdown_intreq_irq,
	.enable = enable_intreq_irq,
	.disable = disable_intreq_irq,
	.ack = mask_and_ack_intreq_irq,
	.end = end_intreq_irq
};

void
make_intreq_irq(unsigned int irq)
{
	disable_irq_nosync(irq);
	irq_desc[irq].chip = &intreq_irq_type;
	disable_intreq_irq(irq);
}

int
shmse_irq_demux(int irq)
{
	if (irq == IRQ5_IRQ)
		return 10;
	return irq;
}

/*
 * Initialize IRQ setting
 */
void __init
init_73180se_IRQ(void)
{
	make_ipr_irq(SIOF0_IRQ, SIOF0_IPR_ADDR, SIOF0_IPR_POS, SIOF0_PRIORITY);

	ctrl_outw(0x2000, 0xb03fffec);	/* mrshpc irq enable */
	ctrl_outw(0x2000, 0xb07fffec);	/* mrshpc irq enable */
	ctrl_outl(3 << ((7 - 5) * 4), INTC_INTPRI0);	/* irq5 pri=3 */
	ctrl_outw(2 << ((7 - 5) * 2), INTC_ICR1);	/* low-level irq */
	make_intreq_irq(10);

	make_ipr_irq(VPU_IRQ, VPU_IPR_ADDR, VPU_IPR_POS, 8);

	ctrl_outb(0x0f, INTC_IMCR5);	/* enable SCIF IRQ */

	make_ipr_irq(DMTE2_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY);
	make_ipr_irq(DMTE3_IRQ, DMA1_IPR_ADDR, DMA1_IPR_POS, DMA1_PRIORITY);
	make_ipr_irq(DMTE4_IRQ, DMA2_IPR_ADDR, DMA2_IPR_POS, DMA2_PRIORITY);
	make_ipr_irq(IIC0_ALI_IRQ, IIC0_IPR_ADDR, IIC0_IPR_POS, IIC0_PRIORITY);
	make_ipr_irq(IIC0_TACKI_IRQ, IIC0_IPR_ADDR, IIC0_IPR_POS,
		     IIC0_PRIORITY);
	make_ipr_irq(IIC0_WAITI_IRQ, IIC0_IPR_ADDR, IIC0_IPR_POS,
		     IIC0_PRIORITY);
	make_ipr_irq(IIC0_DTEI_IRQ, IIC0_IPR_ADDR, IIC0_IPR_POS, IIC0_PRIORITY);
	make_ipr_irq(SIOF0_IRQ, SIOF0_IPR_ADDR, SIOF0_IPR_POS, SIOF0_PRIORITY);
	make_ipr_irq(SIU_IRQ, SIU_IPR_ADDR, SIU_IPR_POS, SIU_PRIORITY);

	/* VIO interrupt */
	make_ipr_irq(CEU_IRQ, VIO_IPR_ADDR, VIO_IPR_POS, VIO_PRIORITY);
	make_ipr_irq(BEU_IRQ, VIO_IPR_ADDR, VIO_IPR_POS, VIO_PRIORITY);
	make_ipr_irq(VEU_IRQ, VIO_IPR_ADDR, VIO_IPR_POS, VIO_PRIORITY);

	make_ipr_irq(LCDC_IRQ, LCDC_IPR_ADDR, LCDC_IPR_POS, LCDC_PRIORITY);
	ctrl_outw(0x2000, PA_MRSHPC + 0x0c);	/* mrshpc irq enable */
}
OpenPOWER on IntegriCloud