diff options
-rw-r--r-- | arch/mips/mips-boards/sim/sim_int.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/arch/mips/mips-boards/sim/sim_int.c b/arch/mips/mips-boards/sim/sim_int.c deleted file mode 100644 index 766e0159ee5b..000000000000 --- a/arch/mips/mips-boards/sim/sim_int.c +++ /dev/null | |||
@@ -1,88 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (C) 1999, 2005 MIPS Technologies, Inc. All rights reserved. | ||
3 | * | ||
4 | * This program is free software; you can distribute it and/or modify it | ||
5 | * under the terms of the GNU General Public License (Version 2) as | ||
6 | * published by the Free Software Foundation. | ||
7 | * | ||
8 | * This program is distributed in the hope it will be useful, but WITHOUT | ||
9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
11 | * for more details. | ||
12 | * | ||
13 | * You should have received a copy of the GNU General Public License along | ||
14 | * with this program; if not, write to the Free Software Foundation, Inc., | ||
15 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | ||
16 | * | ||
17 | */ | ||
18 | #include <linux/init.h> | ||
19 | #include <linux/sched.h> | ||
20 | #include <linux/slab.h> | ||
21 | #include <linux/interrupt.h> | ||
22 | #include <linux/kernel_stat.h> | ||
23 | #include <asm/mips-boards/simint.h> | ||
24 | #include <asm/irq_cpu.h> | ||
25 | |||
26 | static inline int clz(unsigned long x) | ||
27 | { | ||
28 | __asm__ ( | ||
29 | " .set push \n" | ||
30 | " .set mips32 \n" | ||
31 | " clz %0, %1 \n" | ||
32 | " .set pop \n" | ||
33 | : "=r" (x) | ||
34 | : "r" (x)); | ||
35 | |||
36 | return x; | ||
37 | } | ||
38 | |||
39 | /* | ||
40 | * Version of ffs that only looks at bits 12..15. | ||
41 | */ | ||
42 | static inline unsigned int irq_ffs(unsigned int pending) | ||
43 | { | ||
44 | #if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) | ||
45 | return -clz(pending) + 31 - CAUSEB_IP; | ||
46 | #else | ||
47 | unsigned int a0 = 7; | ||
48 | unsigned int t0; | ||
49 | |||
50 | t0 = s0 & 0xf000; | ||
51 | t0 = t0 < 1; | ||
52 | t0 = t0 << 2; | ||
53 | a0 = a0 - t0; | ||
54 | s0 = s0 << t0; | ||
55 | |||
56 | t0 = s0 & 0xc000; | ||
57 | t0 = t0 < 1; | ||
58 | t0 = t0 << 1; | ||
59 | a0 = a0 - t0; | ||
60 | s0 = s0 << t0; | ||
61 | |||
62 | t0 = s0 & 0x8000; | ||
63 | t0 = t0 < 1; | ||
64 | //t0 = t0 << 2; | ||
65 | a0 = a0 - t0; | ||
66 | //s0 = s0 << t0; | ||
67 | |||
68 | return a0; | ||
69 | #endif | ||
70 | } | ||
71 | |||
72 | asmlinkage void plat_irq_dispatch(void) | ||
73 | { | ||
74 | unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; | ||
75 | int irq; | ||
76 | |||
77 | irq = irq_ffs(pending); | ||
78 | |||
79 | if (irq > 0) | ||
80 | do_IRQ(MIPS_CPU_IRQ_BASE + irq); | ||
81 | else | ||
82 | spurious_interrupt(); | ||
83 | } | ||
84 | |||
85 | void __init arch_init_irq(void) | ||
86 | { | ||
87 | mips_cpu_irq_init(); | ||
88 | } | ||