diff options
Diffstat (limited to 'include/grub/i386/pmtimer.h')
-rw-r--r-- | include/grub/i386/pmtimer.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/grub/i386/pmtimer.h b/include/grub/i386/pmtimer.h new file mode 100644 index 0000000..ac09180 --- /dev/null +++ b/include/grub/i386/pmtimer.h @@ -0,0 +1,37 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2008,2009 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef KERNEL_CPU_PMTIMER_HEADER +#define KERNEL_CPU_PMTIMER_HEADER 1 + +#include <grub/i386/tsc.h> +#include <grub/i386/io.h> + +/* + Preconditions: + * Caller has ensured that both pmtimer and tsc are supported + * 1 <= num_pm_ticks <= 3580 + Return: + * Number of TSC ticks elapsed + * 0 on failure. +*/ +grub_uint64_t +EXPORT_FUNC(grub_pmtimer_wait_count_tsc) (grub_port_t pmtimer, + grub_uint16_t num_pm_ticks); + +#endif |