projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 211063dc KRW |
1 | /****************************************************************************** |
| 2 | * acpi.h | |
| 3 | * acpi file for domain 0 kernel | |
| 4 | * | |
| 5 | * Copyright (c) 2011 Konrad Rzeszutek Wilk <[email protected]> | |
| 6 | * Copyright (c) 2011 Yu Ke <[email protected]> | |
| 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 | ||
| be6b25d1 | 43 | int xen_acpi_notify_hypervisor_sleep(u8 sleep_state, |
| 268a2075 | 44 | u32 pm1a_cnt, u32 pm1b_cnd); |
| be6b25d1 BG |
45 | int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state, |
| 46 | u32 val_a, u32 val_b); | |
| 268a2075 | 47 | |
| 068e0dc7 KRW |
48 | static inline int xen_acpi_suspend_lowlevel(void) |
| 49 | { | |
| 50 | /* | |
| 51 | * Xen will save and restore CPU context, so | |
| 52 | * we can skip that and just go straight to | |
| 53 | * the suspend. | |
| 54 | */ | |
| 55 | acpi_enter_sleep_state(ACPI_STATE_S3); | |
| 56 | return 0; | |
| 57 | } | |
| 58 | ||
| 268a2075 LJ |
59 | static inline void xen_acpi_sleep_register(void) |
| 60 | { | |
| 068e0dc7 | 61 | if (xen_initial_domain()) { |
| 268a2075 | 62 | acpi_os_set_prepare_sleep( |
| be6b25d1 BG |
63 | &xen_acpi_notify_hypervisor_sleep); |
| 64 | acpi_os_set_prepare_extended_sleep( | |
| 65 | &xen_acpi_notify_hypervisor_extended_sleep); | |
| 068e0dc7 KRW |
66 | |
| 67 | acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel; | |
| 68 | } | |
| 268a2075 LJ |
69 | } |
| 70 | #else | |
| 71 | static inline void xen_acpi_sleep_register(void) | |
| 72 | { | |
| 73 | } | |
| 74 | #endif | |
| 75 | ||
| 211063dc | 76 | #endif /* _XEN_ACPI_H */ |