cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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acpi.h (2577B)

      1/******************************************************************************
      2 * acpi.h
      3 * acpi file for domain 0 kernel
      4 *
      5 * Copyright (c) 2011 Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      6 * Copyright (c) 2011 Yu Ke <ke.yu@intel.com>
      7 *
      8 * This program is free software; you can redistribute it and/or
      9 * modify it under the terms of the GNU General Public License version 2
     10 * as published by the Free Software Foundation; or, when distributed
     11 * separately from the Linux kernel or incorporated into other
     12 * software packages, subject to the following license:
     13 *
     14 * Permission is hereby granted, free of charge, to any person obtaining a copy
     15 * of this source file (the "Software"), to deal in the Software without
     16 * restriction, including without limitation the rights to use, copy, modify,
     17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
     18 * and to permit persons to whom the Software is furnished to do so, subject to
     19 * the following conditions:
     20 *
     21 * The above copyright notice and this permission notice shall be included in
     22 * all copies or substantial portions of the Software.
     23 *
     24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     30 * IN THE SOFTWARE.
     31 */
     32
     33#ifndef _XEN_ACPI_H
     34#define _XEN_ACPI_H
     35
     36#include <linux/types.h>
     37
     38#ifdef CONFIG_XEN_DOM0
     39#include <asm/xen/hypervisor.h>
     40#include <xen/xen.h>
     41#include <linux/acpi.h>
     42
     43int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
     44				     u32 pm1a_cnt, u32 pm1b_cnd);
     45int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
     46				     u32 val_a, u32 val_b);
     47
     48static inline int xen_acpi_suspend_lowlevel(void)
     49{
     50	/*
     51	* Xen will save and restore CPU context, so
     52	* we can skip that and just go straight to
     53	* the suspend.
     54	*/
     55	acpi_enter_sleep_state(ACPI_STATE_S3);
     56	return 0;
     57}
     58
     59static inline void xen_acpi_sleep_register(void)
     60{
     61	if (xen_initial_domain()) {
     62		acpi_os_set_prepare_sleep(
     63			&xen_acpi_notify_hypervisor_sleep);
     64		acpi_os_set_prepare_extended_sleep(
     65			&xen_acpi_notify_hypervisor_extended_sleep);
     66
     67		acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
     68	}
     69}
     70#else
     71static inline void xen_acpi_sleep_register(void)
     72{
     73}
     74#endif
     75
     76#endif	/* _XEN_ACPI_H */