Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
38typedef int (*get_gsi_from_sbdf_t)(u32 sbdf);
39
40#ifdef CONFIG_XEN_DOM0
41#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, so
54 * we can skip that and just go straight to
55 * 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#else
80static 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#endif
106
107#endif /* _XEN_ACPI_H */