/****************************************************************************** * acpi.h * acpi file for domain 0 kernel * * Copyright (c) 2011 Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> * Copyright (c) 2011 Yu Ke <ke.yu@intel.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation; or, when distributed * separately from the Linux kernel or incorporated into other * software packages, subject to the following license: * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this source file (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, modify, * merge, publish, distribute, sublicense, and/or sell copies of the Software, * and to permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef _XEN_ACPI_H #define _XEN_ACPI_H #include <linux/types.h> #ifdef CONFIG_XEN_DOM0 #include <asm/xen/hypervisor.h> #include <xen/xen.h> #include <linux/acpi.h> int xen_acpi_notify_hypervisor_sleep(u8 sleep_state, u32 pm1a_cnt, u32 pm1b_cnd); int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b); static inline int xen_acpi_suspend_lowlevel(void) { /* * Xen will save and restore CPU context, so * we can skip that and just go straight to * the suspend. */ acpi_enter_sleep_state(ACPI_STATE_S3); return 0; } static inline void xen_acpi_sleep_register(void) { if (xen_initial_domain()) { acpi_os_set_prepare_sleep( &xen_acpi_notify_hypervisor_sleep); acpi_os_set_prepare_extended_sleep( &xen_acpi_notify_hypervisor_extended_sleep); acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel; } } #else static inline void xen_acpi_sleep_register(void) { } #endif #endif /* _XEN_ACPI_H */