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-rw-r--r--arch/mips/emma2rh/markeins/irq.c132
1 files changed, 0 insertions, 132 deletions
diff --git a/arch/mips/emma2rh/markeins/irq.c b/arch/mips/emma2rh/markeins/irq.c
deleted file mode 100644
index 6bcf6a06367a..000000000000
--- a/arch/mips/emma2rh/markeins/irq.c
+++ /dev/null
@@ -1,132 +0,0 @@
1/*
2 * arch/mips/emma2rh/markeins/irq.c
3 * This file defines the irq handler for EMMA2RH.
4 *
5 * Copyright (C) NEC Electronics Corporation 2004-2006
6 *
7 * This file is based on the arch/mips/ddb5xxx/ddb5477/irq.c
8 *
9 * Copyright 2001 MontaVista Software Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 */
25#include <linux/init.h>
26#include <linux/interrupt.h>
27#include <linux/irq.h>
28#include <linux/types.h>
29#include <linux/ptrace.h>
30#include <linux/delay.h>
31
32#include <asm/irq_cpu.h>
33#include <asm/system.h>
34#include <asm/mipsregs.h>
35#include <asm/debug.h>
36#include <asm/addrspace.h>
37#include <asm/bootinfo.h>
38
39#include <asm/emma2rh/emma2rh.h>
40
41/*
42 * IRQ mapping
43 *
44 * 0-7: 8 CPU interrupts
45 * 0 - software interrupt 0
46 * 1 - software interrupt 1
47 * 2 - most Vrc5477 interrupts are routed to this pin
48 * 3 - (optional) some other interrupts routed to this pin for debugg
49 * 4 - not used
50 * 5 - not used
51 * 6 - not used
52 * 7 - cpu timer (used by default)
53 *
54 */
55
56extern void emma2rh_sw_irq_init(u32 base);
57extern void emma2rh_gpio_irq_init(u32 base);
58extern void emma2rh_irq_init(u32 base);
59extern void emma2rh_irq_dispatch(void);
60
61static struct irqaction irq_cascade = {
62 .handler = no_action,
63 .flags = 0,
64 .mask = CPU_MASK_NONE,
65 .name = "cascade",
66 .dev_id = NULL,
67 .next = NULL,
68};
69
70void __init arch_init_irq(void)
71{
72 u32 reg;
73
74 db_run(printk("markeins_irq_setup invoked.\n"));
75
76 /* by default, interrupts are disabled. */
77 emma2rh_out32(EMMA2RH_BHIF_INT_EN_0, 0);
78 emma2rh_out32(EMMA2RH_BHIF_INT_EN_1, 0);
79 emma2rh_out32(EMMA2RH_BHIF_INT_EN_2, 0);
80 emma2rh_out32(EMMA2RH_BHIF_INT1_EN_0, 0);
81 emma2rh_out32(EMMA2RH_BHIF_INT1_EN_1, 0);
82 emma2rh_out32(EMMA2RH_BHIF_INT1_EN_2, 0);
83 emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, 0);
84
85 clear_c0_status(0xff00);
86 set_c0_status(0x0400);
87
88#define GPIO_PCI (0xf<<15)
89 /* setup GPIO interrupt for PCI interface */
90 /* direction input */
91 reg = emma2rh_in32(EMMA2RH_GPIO_DIR);
92 emma2rh_out32(EMMA2RH_GPIO_DIR, reg & ~GPIO_PCI);
93 /* disable interrupt */
94 reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
95 emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg & ~GPIO_PCI);
96 /* level triggerd */
97 reg = emma2rh_in32(EMMA2RH_GPIO_INT_MODE);
98 emma2rh_out32(EMMA2RH_GPIO_INT_MODE, reg | GPIO_PCI);
99 reg = emma2rh_in32(EMMA2RH_GPIO_INT_CND_A);
100 emma2rh_out32(EMMA2RH_GPIO_INT_CND_A, reg & (~GPIO_PCI));
101 /* interrupt clear */
102 emma2rh_out32(EMMA2RH_GPIO_INT_ST, ~GPIO_PCI);
103
104 /* init all controllers */
105 emma2rh_irq_init(EMMA2RH_IRQ_BASE);
106 emma2rh_sw_irq_init(EMMA2RH_SW_IRQ_BASE);
107 emma2rh_gpio_irq_init(EMMA2RH_GPIO_IRQ_BASE);
108 mips_cpu_irq_init();
109
110 /* setup cascade interrupts */
111 setup_irq(EMMA2RH_IRQ_BASE + EMMA2RH_SW_CASCADE, &irq_cascade);
112 setup_irq(EMMA2RH_IRQ_BASE + EMMA2RH_GPIO_CASCADE, &irq_cascade);
113 setup_irq(CPU_IRQ_BASE + CPU_EMMA2RH_CASCADE, &irq_cascade);
114}
115
116asmlinkage void plat_irq_dispatch(void)
117{
118 unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
119
120 if (pending & STATUSF_IP7)
121 do_IRQ(CPU_IRQ_BASE + 7);
122 else if (pending & STATUSF_IP2)
123 emma2rh_irq_dispatch();
124 else if (pending & STATUSF_IP1)
125 do_IRQ(CPU_IRQ_BASE + 1);
126 else if (pending & STATUSF_IP0)
127 do_IRQ(CPU_IRQ_BASE + 0);
128 else
129 spurious_interrupt();
130}
131
132