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1/******************************************************************************2 * acpi.h3 * acpi file for domain 0 kernel4 *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/or9 * modify it under the terms of the GNU General Public License version 210 * as published by the Free Software Foundation; or, when distributed11 * separately from the Linux kernel or incorporated into other12 * software packages, subject to the following license:13 *14 * Permission is hereby granted, free of charge, to any person obtaining a copy15 * of this source file (the "Software"), to deal in the Software without16 * 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 to19 * the following conditions:20 *21 * The above copyright notice and this permission notice shall be included in22 * all copies or substantial portions of the Software.23 *24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS30 * IN THE SOFTWARE.31 */32 33#ifndef _XEN_ACPI_H34#define _XEN_ACPI_H35 36#include <linux/types.h>37 38typedef int (*get_gsi_from_sbdf_t)(u32 sbdf);39 40#ifdef CONFIG_XEN_DOM041#include <asm/xen/hypervisor.h>42#include <xen/xen.h>43#include <linux/acpi.h>44 45int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,46 u32 pm1a_cnt, u32 pm1b_cnd);47int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,48 u32 val_a, u32 val_b);49 50static inline int xen_acpi_suspend_lowlevel(void)51{52 /*53 * Xen will save and restore CPU context, so54 * we can skip that and just go straight to55 * the suspend.56 */57 acpi_enter_sleep_state(ACPI_STATE_S3);58 return 0;59}60 61static inline void xen_acpi_sleep_register(void)62{63 if (xen_initial_domain()) {64 acpi_os_set_prepare_sleep(65 &xen_acpi_notify_hypervisor_sleep);66 acpi_os_set_prepare_extended_sleep(67 &xen_acpi_notify_hypervisor_extended_sleep);68 69 acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;70 }71}72int xen_pvh_setup_gsi(int gsi, int trigger, int polarity);73int xen_acpi_get_gsi_info(struct pci_dev *dev,74 int *gsi_out,75 int *trigger_out,76 int *polarity_out);77void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func);78int xen_acpi_get_gsi_from_sbdf(u32 sbdf);79#else80static inline void xen_acpi_sleep_register(void)81{82}83 84static inline int xen_pvh_setup_gsi(int gsi, int trigger, int polarity)85{86 return -1;87}88 89static inline int xen_acpi_get_gsi_info(struct pci_dev *dev,90 int *gsi_out,91 int *trigger_out,92 int *polarity_out)93{94 return -1;95}96 97static inline void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func)98{99}100 101static inline int xen_acpi_get_gsi_from_sbdf(u32 sbdf)102{103 return -1;104}105#endif106 107#endif /* _XEN_ACPI_H */108