xen: cleancache shim to Xen Transcendent Memory
[linux-2.6/next.git] / arch / mips / kernel / csrc-r4k.c
blobe95a3cd48eeacac0c03f22b8e8ac2fcf2e3a7f52
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
6 * Copyright (C) 2007 by Ralf Baechle
7 */
8 #include <linux/clocksource.h>
9 #include <linux/init.h>
11 #include <asm/time.h>
13 static cycle_t c0_hpt_read(struct clocksource *cs)
15 return read_c0_count();
18 static struct clocksource clocksource_mips = {
19 .name = "MIPS",
20 .read = c0_hpt_read,
21 .mask = CLOCKSOURCE_MASK(32),
22 .flags = CLOCK_SOURCE_IS_CONTINUOUS,
25 int __init init_r4k_clocksource(void)
27 if (!cpu_has_counter || !mips_hpt_frequency)
28 return -ENXIO;
30 /* Calculate a somewhat reasonable rating value */
31 clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000;
33 clocksource_set_clock(&clocksource_mips, mips_hpt_frequency);
35 clocksource_register(&clocksource_mips);
37 return 0;