aboutsummaryrefslogtreecommitdiffstats
path: root/arch/mips/mips-boards
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/mips-boards')
-rw-r--r--arch/mips/mips-boards/sim/sim_int.c88
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
26static 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 */
42static 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
72asmlinkage 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
85void __init arch_init_irq(void)
86{
87 mips_cpu_irq_init();
88}