]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - include/xen/acpi.h
Merge tag 'boards-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
[mirror_ubuntu-bionic-kernel.git] / include / xen / acpi.h
CommitLineData
211063dc
KRW
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
dcb93b96
LJ
43#define ACPI_MEMORY_DEVICE_CLASS "memory"
44#define ACPI_MEMORY_DEVICE_HID "PNP0C80"
45#define ACPI_MEMORY_DEVICE_NAME "Hotplug Mem Device"
46
47int xen_stub_memory_device_init(void);
48void xen_stub_memory_device_exit(void);
49
b22ff77b
LJ
50#define ACPI_PROCESSOR_CLASS "processor"
51#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
52#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
53
54int xen_stub_processor_init(void);
55void xen_stub_processor_exit(void);
56
39adc483
LJ
57void xen_pcpu_hotplug_sync(void);
58int xen_pcpu_id(uint32_t acpi_id);
59
40a58637
LJ
60static inline int xen_acpi_get_pxm(acpi_handle h)
61{
62 unsigned long long pxm;
63 acpi_status status;
64 acpi_handle handle;
65 acpi_handle phandle = h;
66
67 do {
68 handle = phandle;
69 status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm);
70 if (ACPI_SUCCESS(status))
71 return pxm;
72 status = acpi_get_parent(handle, &phandle);
73 } while (ACPI_SUCCESS(status));
74
75 return -ENXIO;
76}
77
be6b25d1 78int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
268a2075 79 u32 pm1a_cnt, u32 pm1b_cnd);
be6b25d1
BG
80int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
81 u32 val_a, u32 val_b);
268a2075 82
068e0dc7
KRW
83static inline int xen_acpi_suspend_lowlevel(void)
84{
85 /*
86 * Xen will save and restore CPU context, so
87 * we can skip that and just go straight to
88 * the suspend.
89 */
90 acpi_enter_sleep_state(ACPI_STATE_S3);
91 return 0;
92}
93
268a2075
LJ
94static inline void xen_acpi_sleep_register(void)
95{
068e0dc7 96 if (xen_initial_domain()) {
268a2075 97 acpi_os_set_prepare_sleep(
be6b25d1
BG
98 &xen_acpi_notify_hypervisor_sleep);
99 acpi_os_set_prepare_extended_sleep(
100 &xen_acpi_notify_hypervisor_extended_sleep);
068e0dc7
KRW
101
102 acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
103 }
268a2075
LJ
104}
105#else
106static inline void xen_acpi_sleep_register(void)
107{
108}
109#endif
110
211063dc 111#endif /* _XEN_ACPI_H */