diff options
Diffstat (limited to 'arch/mips/emma2rh/markeins/irq.c')
-rw-r--r-- | arch/mips/emma2rh/markeins/irq.c | 132 |
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 | |||
56 | extern void emma2rh_sw_irq_init(u32 base); | ||
57 | extern void emma2rh_gpio_irq_init(u32 base); | ||
58 | extern void emma2rh_irq_init(u32 base); | ||
59 | extern void emma2rh_irq_dispatch(void); | ||
60 | |||
61 | static 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 | |||
70 | void __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 | |||
116 | asmlinkage 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 | |||