1 /******************************************************************************
3 * acpi file for domain 0 kernel
5 * Copyright (c) 2011 Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
6 * Copyright (c) 2011 Yu Ke <ke.yu@intel.com>
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:
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:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
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
36 #include <linux/types.h>
38 #ifdef CONFIG_XEN_DOM0
39 #include <asm/xen/hypervisor.h>
41 #include <linux/acpi.h>
43 #define ACPI_MEMORY_DEVICE_CLASS "memory"
44 #define ACPI_MEMORY_DEVICE_HID "PNP0C80"
45 #define ACPI_MEMORY_DEVICE_NAME "Hotplug Mem Device"
47 int xen_stub_memory_device_init(void);
48 void xen_stub_memory_device_exit(void);
50 #define ACPI_PROCESSOR_CLASS "processor"
51 #define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
52 #define ACPI_PROCESSOR_DEVICE_NAME "Processor"
54 int xen_stub_processor_init(void);
55 void xen_stub_processor_exit(void);
57 void xen_pcpu_hotplug_sync(void);
58 int xen_pcpu_id(uint32_t acpi_id
);
60 static inline int xen_acpi_get_pxm(acpi_handle h
)
62 unsigned long long pxm
;
65 acpi_handle phandle
= h
;
69 status
= acpi_evaluate_integer(handle
, "_PXM", NULL
, &pxm
);
70 if (ACPI_SUCCESS(status
))
72 status
= acpi_get_parent(handle
, &phandle
);
73 } while (ACPI_SUCCESS(status
));
78 int xen_acpi_notify_hypervisor_sleep(u8 sleep_state
,
79 u32 pm1a_cnt
, u32 pm1b_cnd
);
80 int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state
,
81 u32 val_a
, u32 val_b
);
83 static inline int xen_acpi_suspend_lowlevel(void)
86 * Xen will save and restore CPU context, so
87 * we can skip that and just go straight to
90 acpi_enter_sleep_state(ACPI_STATE_S3
);
94 static inline void xen_acpi_sleep_register(void)
96 if (xen_initial_domain()) {
97 acpi_os_set_prepare_sleep(
98 &xen_acpi_notify_hypervisor_sleep
);
99 acpi_os_set_prepare_extended_sleep(
100 &xen_acpi_notify_hypervisor_extended_sleep
);
102 acpi_suspend_lowlevel
= xen_acpi_suspend_lowlevel
;
106 static inline void xen_acpi_sleep_register(void)
111 #endif /* _XEN_ACPI_H */