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authorRalf Baechle <ralf@linux-mips.org>2006-04-03 12:56:36 -0400
committerRalf Baechle <ralf@linux-mips.org>2006-04-18 22:14:21 -0400
commite4ac58afdfac792c0583af30dbd9eae53e24c78b (patch)
tree7517bef2c515fc630e4d3d238867b91cde96f558 /arch/mips/momentum
parentd35d473c25d43d7db3e5e18b66d558d2a631cca8 (diff)
[MIPS] Rewrite all the assembler interrupt handlers to C.
Saves like 1,600 lines of code, is way easier to debug, compilers frequently do a better job than the cut and paste type of handlers many boards had. And finally having all the stuff done in a single place also means alot of bug potencial for the MT ASE is gone. The only surviving handler in assembler is the DECstation one; I hope Maciej will rewrite it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/momentum')
-rw-r--r--arch/mips/momentum/jaguar_atx/Makefile2
-rw-r--r--arch/mips/momentum/jaguar_atx/int-handler.S128
-rw-r--r--arch/mips/momentum/jaguar_atx/irq.c35
-rw-r--r--arch/mips/momentum/ocelot_3/Makefile2
-rw-r--r--arch/mips/momentum/ocelot_3/int-handler.S139
-rw-r--r--arch/mips/momentum/ocelot_3/irq.c38
-rw-r--r--arch/mips/momentum/ocelot_c/Makefile2
-rw-r--r--arch/mips/momentum/ocelot_c/int-handler.S103
-rw-r--r--arch/mips/momentum/ocelot_c/irq.c30
-rw-r--r--arch/mips/momentum/ocelot_g/Makefile2
-rw-r--r--arch/mips/momentum/ocelot_g/int-handler.S131
-rw-r--r--arch/mips/momentum/ocelot_g/irq.c38
12 files changed, 130 insertions, 520 deletions
diff --git a/arch/mips/momentum/jaguar_atx/Makefile b/arch/mips/momentum/jaguar_atx/Makefile
index 20bbd3ea44a8..67372f3f9654 100644
--- a/arch/mips/momentum/jaguar_atx/Makefile
+++ b/arch/mips/momentum/jaguar_atx/Makefile
@@ -6,7 +6,7 @@
6# unless it's something special (ie not a .c file). 6# unless it's something special (ie not a .c file).
7# 7#
8 8
9obj-y += int-handler.o irq.o prom.o reset.o setup.o 9obj-y += irq.o prom.o reset.o setup.o
10 10
11obj-$(CONFIG_SERIAL_8250_CONSOLE) += ja-console.o 11obj-$(CONFIG_SERIAL_8250_CONSOLE) += ja-console.o
12obj-$(CONFIG_REMOTE_DEBUG) += dbg_io.o 12obj-$(CONFIG_REMOTE_DEBUG) += dbg_io.o
diff --git a/arch/mips/momentum/jaguar_atx/int-handler.S b/arch/mips/momentum/jaguar_atx/int-handler.S
deleted file mode 100644
index 55bc789733f2..000000000000
--- a/arch/mips/momentum/jaguar_atx/int-handler.S
+++ /dev/null
@@ -1,128 +0,0 @@
1/*
2 * Copyright 2002 Momentum Computer Inc.
3 * Author: Matthew Dharm <mdharm@momenco.com>
4 *
5 * Based on work:
6 * Copyright 2001 MontaVista Software Inc.
7 * Author: jsun@mvista.com or jsun@junsun.net
8 *
9 * First-level interrupt dispatcher for Jaguar-ATX board.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 */
16#include <asm/asm.h>
17#include <asm/mipsregs.h>
18#include <asm/addrspace.h>
19#include <asm/regdef.h>
20#include <asm/stackframe.h>
21
22/*
23 * First level interrupt dispatcher for Ocelot-CS board
24 */
25 .align 5
26 NESTED(jaguar_handle_int, PT_SIZE, sp)
27 SAVE_ALL
28 CLI
29 .set at
30 mfc0 t0, CP0_CAUSE
31 mfc0 t2, CP0_STATUS
32
33 and t0, t2
34
35 andi t1, t0, STATUSF_IP0 /* sw0 software interrupt */
36 bnez t1, ll_sw0_irq
37 andi t1, t0, STATUSF_IP1 /* sw1 software interrupt */
38 bnez t1, ll_sw1_irq
39 andi t1, t0, STATUSF_IP2 /* int0 hardware line */
40 bnez t1, ll_pcixa_irq
41 andi t1, t0, STATUSF_IP3 /* int1 hardware line */
42 bnez t1, ll_pcixb_irq
43 andi t1, t0, STATUSF_IP4 /* int2 hardware line */
44 bnez t1, ll_pcia_irq
45 andi t1, t0, STATUSF_IP5 /* int3 hardware line */
46 bnez t1, ll_pcib_irq
47 andi t1, t0, STATUSF_IP6 /* int4 hardware line */
48 bnez t1, ll_uart_irq
49 andi t1, t0, STATUSF_IP7 /* cpu timer */
50 bnez t1, ll_cputimer_irq
51
52 nop
53 nop
54
55 /* now look at extended interrupts */
56 mfc0 t0, CP0_CAUSE
57 cfc0 t1, CP0_S1_INTCONTROL
58
59 /* shift the mask 8 bits left to line up the bits */
60 sll t2, t1, 8
61
62 and t0, t2
63 srl t0, t0, 16
64
65 andi t1, t0, STATUSF_IP8 /* int6 hardware line */
66 bnez t1, ll_mv64340_decode_irq
67
68 nop
69 nop
70
71 .set reorder
72
73 /* wrong alarm or masked ... */
74 j spurious_interrupt
75 nop
76 END(jaguar_handle_int)
77
78 .align 5
79ll_sw0_irq:
80 li a0, 0
81 move a1, sp
82 jal do_IRQ
83 j ret_from_irq
84ll_sw1_irq:
85 li a0, 1
86 move a1, sp
87 jal do_IRQ
88 j ret_from_irq
89ll_pcixa_irq:
90 li a0, 2
91 move a1, sp
92 jal do_IRQ
93 j ret_from_irq
94
95ll_pcixb_irq:
96 li a0, 3
97 move a1, sp
98 jal do_IRQ
99 j ret_from_irq
100
101ll_pcia_irq:
102 li a0, 4
103 move a1, sp
104 jal do_IRQ
105 j ret_from_irq
106
107ll_pcib_irq:
108 li a0, 5
109 move a1, sp
110 jal do_IRQ
111 j ret_from_irq
112
113ll_uart_irq:
114 li a0, 6
115 move a1, sp
116 jal do_IRQ
117 j ret_from_irq
118
119ll_cputimer_irq:
120 li a0, 7
121 move a1, sp
122 jal ll_timer_interrupt
123 j ret_from_irq
124
125ll_mv64340_decode_irq:
126 move a0, sp
127 jal ll_mv64340_irq
128 j ret_from_irq
diff --git a/arch/mips/momentum/jaguar_atx/irq.c b/arch/mips/momentum/jaguar_atx/irq.c
index 15588f91ace2..ec4032b38f19 100644
--- a/arch/mips/momentum/jaguar_atx/irq.c
+++ b/arch/mips/momentum/jaguar_atx/irq.c
@@ -10,7 +10,7 @@
10 * Copyright 2001 MontaVista Software Inc. 10 * Copyright 2001 MontaVista Software Inc.
11 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net 11 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
12 * 12 *
13 * Copyright (C) 2000, 2001 Ralf Baechle (ralf@gnu.org) 13 * Copyright (C) 2000, 01, 06 Ralf Baechle (ralf@linux-mips.org)
14 * 14 *
15 * This program is free software; you can redistribute it and/or modify it 15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the 16 * under the terms of the GNU General Public License as published by the
@@ -38,8 +38,37 @@
38#include <linux/types.h> 38#include <linux/types.h>
39#include <asm/irq_cpu.h> 39#include <asm/irq_cpu.h>
40#include <asm/mipsregs.h> 40#include <asm/mipsregs.h>
41#include <asm/time.h>
41 42
42extern asmlinkage void jaguar_handle_int(void); 43asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
44{
45 unsigned int pending = read_c0_cause() & read_c0_status();
46
47 if (pending & STATUSF_IP0)
48 do_IRQ(0, regs);
49 else if (pending & STATUSF_IP1)
50 do_IRQ(1, regs);
51 else if (pending & STATUSF_IP2)
52 do_IRQ(2, regs);
53 else if (pending & STATUSF_IP3)
54 do_IRQ(3, regs);
55 else if (pending & STATUSF_IP4)
56 do_IRQ(4, regs);
57 else if (pending & STATUSF_IP5)
58 do_IRQ(5, regs);
59 else if (pending & STATUSF_IP6)
60 do_IRQ(6, regs);
61 else if (pending & STATUSF_IP7)
62 ll_timer_interrupt(7, regs);
63 else {
64 /*
65 * Now look at the extended interrupts
66 */
67 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
68 if (pending & STATUSF_IP8)
69 ll_mv64340_irq(regs);
70 }
71}
43 72
44static struct irqaction cascade_mv64340 = { 73static struct irqaction cascade_mv64340 = {
45 no_action, SA_INTERRUPT, CPU_MASK_NONE, "MV64340-Cascade", NULL, NULL 74 no_action, SA_INTERRUPT, CPU_MASK_NONE, "MV64340-Cascade", NULL, NULL
@@ -53,8 +82,6 @@ void __init arch_init_irq(void)
53 */ 82 */
54 clear_c0_status(ST0_IM); 83 clear_c0_status(ST0_IM);
55 84
56 /* Sets the first-level interrupt dispatcher. */
57 set_except_vector(0, jaguar_handle_int);
58 mips_cpu_irq_init(0); 85 mips_cpu_irq_init(0);
59 rm7k_cpu_irq_init(8); 86 rm7k_cpu_irq_init(8);
60 87
diff --git a/arch/mips/momentum/ocelot_3/Makefile b/arch/mips/momentum/ocelot_3/Makefile
index aab8fd89f830..8bcea64dd27b 100644
--- a/arch/mips/momentum/ocelot_3/Makefile
+++ b/arch/mips/momentum/ocelot_3/Makefile
@@ -5,4 +5,4 @@
5# removes any old dependencies. DON'T put your own dependencies here 5# removes any old dependencies. DON'T put your own dependencies here
6# unless it's something special (ie not a .c file). 6# unless it's something special (ie not a .c file).
7# 7#
8obj-y += int-handler.o irq.o prom.o reset.o setup.o 8obj-y += irq.o prom.o reset.o setup.o
diff --git a/arch/mips/momentum/ocelot_3/int-handler.S b/arch/mips/momentum/ocelot_3/int-handler.S
deleted file mode 100644
index b1207262984a..000000000000
--- a/arch/mips/momentum/ocelot_3/int-handler.S
+++ /dev/null
@@ -1,139 +0,0 @@
1/*
2 * Copyright 2002 Momentum Computer Inc.
3 * Author: Matthew Dharm <mdharm@momenco.com>
4 *
5 * Copyright 2001 MontaVista Software Inc.
6 * Author: jsun@mvista.com or jsun@junsun.net
7 *
8 * Copyright 2004 PMC-Sierra
9 * Author: Manish Lachwani (lachwani@pmc-sierra.com)
10 *
11 * Copyright (C) 2004 MontaVista Software Inc.
12 * Author: Manish Lachwani, mlachwani@mvista.com
13 *
14 * First-level interrupt dispatcher for Ocelot-3 board.
15 *
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License as published by the
18 * Free Software Foundation; either version 2 of the License, or (at your
19 * option) any later version.
20 */
21#include <asm/asm.h>
22#include <asm/mipsregs.h>
23#include <asm/addrspace.h>
24#include <asm/regdef.h>
25#include <asm/stackframe.h>
26
27/*
28 * First level interrupt dispatcher for Ocelot-3 board
29 */
30 .align 5
31 NESTED(ocelot3_handle_int, PT_SIZE, sp)
32 SAVE_ALL
33 CLI
34 .set at
35
36 mfc0 t0, CP0_CAUSE
37 mfc0 t2, CP0_STATUS
38
39 and t0, t2
40
41 andi t1, t0, STATUSF_IP0 /* sw0 software interrupt (IRQ0) */
42 bnez t1, ll_sw0_irq
43
44 andi t1, t0, STATUSF_IP1 /* sw1 software interrupt (IRQ1) */
45 bnez t1, ll_sw1_irq
46
47 andi t1, t0, STATUSF_IP2 /* int0 hardware line (IRQ2) */
48 bnez t1, ll_pci0slot1_irq
49
50 andi t1, t0, STATUSF_IP3 /* int1 hardware line (IRQ3) */
51 bnez t1, ll_pci0slot2_irq
52
53 andi t1, t0, STATUSF_IP4 /* int2 hardware line (IRQ4) */
54 bnez t1, ll_pci1slot1_irq
55
56 andi t1, t0, STATUSF_IP5 /* int3 hardware line (IRQ5) */
57 bnez t1, ll_pci1slot2_irq
58
59 andi t1, t0, STATUSF_IP6 /* int4 hardware line (IRQ6) */
60 bnez t1, ll_uart_irq
61
62 andi t1, t0, STATUSF_IP7 /* cpu timer (IRQ7) */
63 bnez t1, ll_cputimer_irq
64
65 /* now look at extended interrupts */
66 mfc0 t0, CP0_CAUSE
67 cfc0 t1, CP0_S1_INTCONTROL
68
69 /* shift the mask 8 bits left to line up the bits */
70 sll t2, t1, 8
71
72 and t0, t2
73 srl t0, t0, 16
74
75 andi t1, t0, STATUSF_IP8 /* int6 hardware line (IRQ9) */
76 bnez t1, ll_mv64340_decode_irq
77
78 .set reorder
79
80 /* wrong alarm or masked ... */
81 jal spurious_interrupt
82 nop
83 j ret_from_irq
84 nop
85 END(ocelot3_handle_int)
86
87 .align 5
88ll_sw0_irq:
89 li a0, 0 /* IRQ 1 */
90 move a1, sp
91 jal do_IRQ
92 j ret_from_irq
93ll_sw1_irq:
94 li a0, 1 /* IRQ 2 */
95 move a1, sp
96 jal do_IRQ
97 j ret_from_irq
98
99ll_pci0slot1_irq:
100 li a0, 2 /* IRQ 3 */
101 move a1, sp
102 jal do_IRQ
103 j ret_from_irq
104
105ll_pci0slot2_irq:
106 li a0, 3 /* IRQ 4 */
107 move a1, sp
108 jal do_IRQ
109 j ret_from_irq
110
111ll_pci1slot1_irq:
112 li a0, 4 /* IRQ 5 */
113 move a1, sp
114 jal do_IRQ
115 j ret_from_irq
116
117ll_pci1slot2_irq:
118 li a0, 5 /* IRQ 6 */
119 move a1, sp
120 jal do_IRQ
121 j ret_from_irq
122
123ll_uart_irq:
124 li a0, 6 /* IRQ 7 */
125 move a1, sp
126 jal do_IRQ
127 j ret_from_irq
128
129ll_cputimer_irq:
130 li a0, 7 /* IRQ 8 */
131 move a1, sp
132 jal do_IRQ
133 j ret_from_irq
134
135ll_mv64340_decode_irq:
136 move a0, sp
137 jal ll_mv64340_irq
138 j ret_from_irq
139
diff --git a/arch/mips/momentum/ocelot_3/irq.c b/arch/mips/momentum/ocelot_3/irq.c
index 42464dbd4ad2..87c63c340ae3 100644
--- a/arch/mips/momentum/ocelot_3/irq.c
+++ b/arch/mips/momentum/ocelot_3/irq.c
@@ -53,8 +53,6 @@
53#include <asm/mipsregs.h> 53#include <asm/mipsregs.h>
54#include <asm/system.h> 54#include <asm/system.h>
55 55
56extern asmlinkage void ocelot3_handle_int(void);
57
58static struct irqaction cascade_mv64340 = { 56static struct irqaction cascade_mv64340 = {
59 no_action, SA_INTERRUPT, CPU_MASK_NONE, "MV64340-Cascade", NULL, NULL 57 no_action, SA_INTERRUPT, CPU_MASK_NONE, "MV64340-Cascade", NULL, NULL
60}; 58};
@@ -67,9 +65,6 @@ void __init arch_init_irq(void)
67 */ 65 */
68 clear_c0_status(ST0_IM | ST0_BEV); 66 clear_c0_status(ST0_IM | ST0_BEV);
69 67
70 /* Sets the first-level interrupt dispatcher. */
71 set_except_vector(0, ocelot3_handle_int);
72 mips_cpu_irq_init(0);
73 rm7k_cpu_irq_init(8); 68 rm7k_cpu_irq_init(8);
74 69
75 /* set up the cascading interrupts */ 70 /* set up the cascading interrupts */
@@ -79,3 +74,36 @@ void __init arch_init_irq(void)
79 set_c0_status(ST0_IM); /* IE in the status register */ 74 set_c0_status(ST0_IM); /* IE in the status register */
80 75
81} 76}
77
78asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
79{
80 unsigned int pending = read_c0_cause() & read_c0_status();
81
82 if (pending & STATUSF_IP0)
83 do_IRQ(0, regs);
84 else if (pending & STATUSF_IP1)
85 do_IRQ(1, regs);
86 else if (pending & STATUSF_IP2)
87 do_IRQ(2, regs);
88 else if (pending & STATUSF_IP3)
89 do_IRQ(3, regs);
90 else if (pending & STATUSF_IP4)
91 do_IRQ(4, regs);
92 else if (pending & STATUSF_IP5)
93 do_IRQ(5, regs);
94 else if (pending & STATUSF_IP6)
95 do_IRQ(6, regs);
96 else if (pending & STATUSF_IP7)
97 do_IRQ(7, regs);
98 else {
99 /*
100 * Now look at the extended interrupts
101 */
102 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
103
104 if (pending & STATUSF_IP8)
105 ll_mv64340_irq(regs);
106 else
107 spurious_interrupt(regs);
108 }
109}
diff --git a/arch/mips/momentum/ocelot_c/Makefile b/arch/mips/momentum/ocelot_c/Makefile
index 91240777f978..94802b4db472 100644
--- a/arch/mips/momentum/ocelot_c/Makefile
+++ b/arch/mips/momentum/ocelot_c/Makefile
@@ -2,7 +2,7 @@
2# Makefile for Momentum Computer's Ocelot-C and -CS boards. 2# Makefile for Momentum Computer's Ocelot-C and -CS boards.
3# 3#
4 4
5obj-y += cpci-irq.o int-handler.o irq.o prom.o reset.o \ 5obj-y += cpci-irq.o irq.o prom.o reset.o \
6 setup.o uart-irq.o 6 setup.o uart-irq.o
7 7
8obj-$(CONFIG_KGDB) += dbg_io.o 8obj-$(CONFIG_KGDB) += dbg_io.o
diff --git a/arch/mips/momentum/ocelot_c/int-handler.S b/arch/mips/momentum/ocelot_c/int-handler.S
deleted file mode 100644
index f77834193c3c..000000000000
--- a/arch/mips/momentum/ocelot_c/int-handler.S
+++ /dev/null
@@ -1,103 +0,0 @@
1/*
2 * Copyright 2002 Momentum Computer Inc.
3 * Author: Matthew Dharm <mdharm@momenco.com>
4 *
5 * Copyright 2001 MontaVista Software Inc.
6 * Author: jsun@mvista.com or jsun@junsun.net
7 *
8 * First-level interrupt dispatcher for Ocelot-CS board.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 */
15#include <asm/asm.h>
16#include <asm/mipsregs.h>
17#include <asm/addrspace.h>
18#include <asm/regdef.h>
19#include <asm/stackframe.h>
20#include "ocelot_c_fpga.h"
21
22/*
23 * First level interrupt dispatcher for Ocelot-CS board
24 */
25 .align 5
26 NESTED(ocelot_handle_int, PT_SIZE, sp)
27 SAVE_ALL
28 CLI
29 .set at
30 mfc0 t0, CP0_CAUSE
31 mfc0 t2, CP0_STATUS
32
33 and t0, t2
34
35 andi t1, t0, STATUSF_IP0 /* sw0 software interrupt */
36 bnez t1, ll_sw0_irq
37 andi t1, t0, STATUSF_IP1 /* sw1 software interrupt */
38 bnez t1, ll_sw1_irq
39 andi t1, t0, STATUSF_IP2 /* int0 hardware line */
40 bnez t1, ll_scsi_irq
41 andi t1, t0, STATUSF_IP3 /* int1 hardware line */
42 bnez t1, ll_uart_decode_irq
43 andi t1, t0, STATUSF_IP4 /* int2 hardware line */
44 bnez t1, ll_pmc_irq
45 andi t1, t0, STATUSF_IP5 /* int3 hardware line */
46 bnez t1, ll_cpci_decode_irq
47 andi t1, t0, STATUSF_IP6 /* int4 hardware line */
48 bnez t1, ll_mv64340_decode_irq
49 andi t1, t0, STATUSF_IP7 /* cpu timer */
50 bnez t1, ll_cputimer_irq
51
52 .set reorder
53
54 /* wrong alarm or masked ... */
55 jal spurious_interrupt
56 nop
57 j ret_from_irq
58 END(ocelot_handle_int)
59
60 .align 5
61ll_sw0_irq:
62 li a0, 0
63 move a1, sp
64 jal do_IRQ
65 j ret_from_irq
66ll_sw1_irq:
67 li a0, 1
68 move a1, sp
69 jal do_IRQ
70 j ret_from_irq
71ll_scsi_irq:
72 li a0, 2
73 move a1, sp
74 jal do_IRQ
75 j ret_from_irq
76
77ll_uart_decode_irq:
78 move a0, sp
79 jal ll_uart_irq
80 j ret_from_irq
81
82ll_pmc_irq:
83 li a0, 4
84 move a1, sp
85 jal do_IRQ
86 j ret_from_irq
87
88ll_cpci_decode_irq:
89 move a0, sp
90 jal ll_cpci_irq
91 j ret_from_irq
92
93ll_mv64340_decode_irq:
94 move a0, sp
95 jal ll_mv64340_irq
96 j ret_from_irq
97
98ll_cputimer_irq:
99 li a0, 7
100 move a1, sp
101 jal do_IRQ
102 j ret_from_irq
103
diff --git a/arch/mips/momentum/ocelot_c/irq.c b/arch/mips/momentum/ocelot_c/irq.c
index a5764bc20e36..86f61ce59e53 100644
--- a/arch/mips/momentum/ocelot_c/irq.c
+++ b/arch/mips/momentum/ocelot_c/irq.c
@@ -48,7 +48,6 @@
48#include <asm/mipsregs.h> 48#include <asm/mipsregs.h>
49#include <asm/system.h> 49#include <asm/system.h>
50 50
51extern asmlinkage void ocelot_handle_int(void);
52extern void uart_irq_init(void); 51extern void uart_irq_init(void);
53extern void cpci_irq_init(void); 52extern void cpci_irq_init(void);
54 53
@@ -60,6 +59,33 @@ static struct irqaction cascade_mv64340 = {
60 no_action, SA_INTERRUPT, CPU_MASK_NONE, "cascade via MV64340", NULL, NULL 59 no_action, SA_INTERRUPT, CPU_MASK_NONE, "cascade via MV64340", NULL, NULL
61}; 60};
62 61
62extern void ll_uart_irq(struct pt_regs *regs);
63extern void ll_cpci_irq(struct pt_regs *regs);
64
65asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
66{
67 unsigned int pending = read_c0_cause() & read_c0_status();
68
69 if (pending & STATUSF_IP0)
70 do_IRQ(0, regs);
71 else if (pending & STATUSF_IP1)
72 do_IRQ(1, regs);
73 else if (pending & STATUSF_IP2)
74 do_IRQ(2, regs);
75 else if (pending & STATUSF_IP3)
76 ll_uart_irq(regs);
77 else if (pending & STATUSF_IP4)
78 do_IRQ(4, regs);
79 else if (pending & STATUSF_IP5)
80 ll_cpci_irq(regs);
81 else if (pending & STATUSF_IP6)
82 ll_mv64340_irq(regs);
83 else if (pending & STATUSF_IP7)
84 do_IRQ(7, regs);
85 else
86 spurious_interrupt(regs);
87}
88
63void __init arch_init_irq(void) 89void __init arch_init_irq(void)
64{ 90{
65 /* 91 /*
@@ -68,8 +94,6 @@ void __init arch_init_irq(void)
68 */ 94 */
69 clear_c0_status(ST0_IM); 95 clear_c0_status(ST0_IM);
70 96
71 /* Sets the first-level interrupt dispatcher. */
72 set_except_vector(0, ocelot_handle_int);
73 mips_cpu_irq_init(0); 97 mips_cpu_irq_init(0);
74 98
75 /* set up the cascading interrupts */ 99 /* set up the cascading interrupts */
diff --git a/arch/mips/momentum/ocelot_g/Makefile b/arch/mips/momentum/ocelot_g/Makefile
index e5f1cb086973..adb5665d40a9 100644
--- a/arch/mips/momentum/ocelot_g/Makefile
+++ b/arch/mips/momentum/ocelot_g/Makefile
@@ -2,7 +2,7 @@
2# Makefile for Momentum Computer's Ocelot-G board. 2# Makefile for Momentum Computer's Ocelot-G board.
3# 3#
4 4
5obj-y += int-handler.o irq.o gt-irq.o prom.o reset.o setup.o 5obj-y += irq.o gt-irq.o prom.o reset.o setup.o
6obj-$(CONFIG_KGDB) += dbg_io.o 6obj-$(CONFIG_KGDB) += dbg_io.o
7 7
8EXTRA_AFLAGS := $(CFLAGS) 8EXTRA_AFLAGS := $(CFLAGS)
diff --git a/arch/mips/momentum/ocelot_g/int-handler.S b/arch/mips/momentum/ocelot_g/int-handler.S
deleted file mode 100644
index 772e8f713176..000000000000
--- a/arch/mips/momentum/ocelot_g/int-handler.S
+++ /dev/null
@@ -1,131 +0,0 @@
1/*
2 * Copyright 2001 MontaVista Software Inc.
3 * Author: jsun@mvista.com or jsun@junsun.net
4 *
5 * First-level interrupt dispatcher for ocelot board.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12#include <asm/asm.h>
13#include <asm/mipsregs.h>
14#include <asm/addrspace.h>
15#include <asm/regdef.h>
16#include <asm/stackframe.h>
17
18/*
19 * first level interrupt dispatcher for ocelot board -
20 * We check for the timer first, then check PCI ints A and D.
21 * Then check for serial IRQ and fall through.
22 */
23 .align 5
24 NESTED(ocelot_handle_int, PT_SIZE, sp)
25 SAVE_ALL
26 CLI
27 .set at
28 mfc0 t0, CP0_CAUSE
29 mfc0 t2, CP0_STATUS
30
31 and t0, t2
32
33 andi t1, t0, STATUSF_IP2 /* int0 hardware line */
34 bnez t1, ll_pri_enet_irq
35 andi t1, t0, STATUSF_IP3 /* int1 hardware line */
36 bnez t1, ll_sec_enet_irq
37 andi t1, t0, STATUSF_IP4 /* int2 hardware line */
38 bnez t1, ll_uart_irq
39 andi t1, t0, STATUSF_IP5 /* int3 hardware line */
40 bnez t1, ll_cpci_irq
41 andi t1, t0, STATUSF_IP6 /* int4 hardware line */
42 bnez t1, ll_galileo_p0_irq
43 andi t1, t0, STATUSF_IP7 /* cpu timer */
44 bnez t1, ll_cputimer_irq
45
46 /* now look at the extended interrupts */
47 mfc0 t0, CP0_CAUSE
48 cfc0 t1, CP0_S1_INTCONTROL
49
50 /* shift the mask 8 bits left to line up the bits */
51 sll t2, t1, 8
52
53 and t0, t2
54 srl t0, t0, 16
55
56 andi t1, t0, STATUSF_IP8 /* int6 hardware line */
57 bnez t1, ll_galileo_p1_irq
58 andi t1, t0, STATUSF_IP9 /* int7 hardware line */
59 bnez t1, ll_pmc_irq
60 andi t1, t0, STATUSF_IP10 /* int8 hardware line */
61 bnez t1, ll_cpci_abcd_irq
62 andi t1, t0, STATUSF_IP11 /* int9 hardware line */
63 bnez t1, ll_testpoint_irq
64
65 .set reorder
66
67 /* wrong alarm or masked ... */
68 j spurious_interrupt
69 nop
70 END(ocelot_handle_int)
71
72 .align 5
73ll_pri_enet_irq:
74 li a0, 2
75 move a1, sp
76 jal do_IRQ
77 j ret_from_irq
78
79ll_sec_enet_irq:
80 li a0, 3
81 move a1, sp
82 jal do_IRQ
83 j ret_from_irq
84
85ll_uart_irq:
86 li a0, 4
87 move a1, sp
88 jal do_IRQ
89 j ret_from_irq
90
91ll_cpci_irq:
92 li a0, 5
93 move a1, sp
94 jal do_IRQ
95 j ret_from_irq
96
97ll_galileo_p0_irq:
98 li a0, 6
99 move a1, sp
100 jal do_IRQ
101 j ret_from_irq
102
103ll_cputimer_irq:
104 li a0, 7
105 move a1, sp
106 jal do_IRQ
107 j ret_from_irq
108
109ll_galileo_p1_irq:
110 li a0, 8
111 move a1, sp
112 jal do_IRQ
113 j ret_from_irq
114
115ll_pmc_irq:
116 li a0, 9
117 move a1, sp
118 jal do_IRQ
119 j ret_from_irq
120
121ll_cpci_abcd_irq:
122 li a0, 10
123 move a1, sp
124 jal do_IRQ
125 j ret_from_irq
126
127ll_testpoint_irq:
128 li a0, 11
129 move a1, sp
130 jal do_IRQ
131 j ret_from_irq
diff --git a/arch/mips/momentum/ocelot_g/irq.c b/arch/mips/momentum/ocelot_g/irq.c
index 5eb85b164205..7a4a419804f1 100644
--- a/arch/mips/momentum/ocelot_g/irq.c
+++ b/arch/mips/momentum/ocelot_g/irq.c
@@ -48,7 +48,41 @@
48#include <asm/mipsregs.h> 48#include <asm/mipsregs.h>
49#include <asm/system.h> 49#include <asm/system.h>
50 50
51extern asmlinkage void ocelot_handle_int(void); 51asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
52{
53 unsigned int pending = read_c0_cause() & read_c0_status();
54
55 if (pending & STATUSF_IP2)
56 do_IRQ(2, regs);
57 else if (pending & STATUSF_IP3)
58 do_IRQ(3, regs);
59 else if (pending & STATUSF_IP4)
60 do_IRQ(4, regs);
61 else if (pending & STATUSF_IP5)
62 do_IRQ(5, regs);
63 else if (pending & STATUSF_IP6)
64 do_IRQ(6, regs);
65 else if (pending & STATUSF_IP7)
66 do_IRQ(7, regs);
67 else {
68 /*
69 * Now look at the extended interrupts
70 */
71 pending = (read_c0_cause() & (read_c0_intcontrol() << 8)) >> 16;
72
73 if (pending & STATUSF_IP8)
74 do_IRQ(8, regs);
75 else if (pending & STATUSF_IP9)
76 do_IRQ(9, regs);
77 else if (pending & STATUSF_IP10)
78 do_IRQ(10, regs);
79 else if (pending & STATUSF_IP11)
80 do_IRQ(11, regs);
81 else
82 spurious_interrupt(regs);
83 }
84}
85
52extern void gt64240_irq_init(void); 86extern void gt64240_irq_init(void);
53 87
54void __init arch_init_irq(void) 88void __init arch_init_irq(void)
@@ -60,8 +94,6 @@ void __init arch_init_irq(void)
60 clear_c0_status(ST0_IM); 94 clear_c0_status(ST0_IM);
61 local_irq_disable(); 95 local_irq_disable();
62 96
63 /* Sets the first-level interrupt dispatcher. */
64 set_except_vector(0, ocelot_handle_int);
65 mips_cpu_irq_init(0); 97 mips_cpu_irq_init(0);
66 rm7k_cpu_irq_init(8); 98 rm7k_cpu_irq_init(8);
67 99
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