| 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 | typedef 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 |
|
| 45 | int xen_acpi_notify_hypervisor_sleep(u8 sleep_state,
|
| 46 | u32 pm1a_cnt, u32 pm1b_cnd);
|
| 47 | int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state,
|
| 48 | u32 val_a, u32 val_b);
|
| 49 |
|
| 50 | static 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 |
|
| 61 | static 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 | }
|
| 72 | int xen_pvh_setup_gsi(int gsi, int trigger, int polarity);
|
| 73 | int xen_acpi_get_gsi_info(struct pci_dev *dev,
|
| 74 | int *gsi_out,
|
| 75 | int *trigger_out,
|
| 76 | int *polarity_out);
|
| 77 | void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func);
|
| 78 | int xen_acpi_get_gsi_from_sbdf(u32 sbdf);
|
| 79 | #else
|
| 80 | static inline void xen_acpi_sleep_register(void)
|
| 81 | {
|
| 82 | }
|
| 83 |
|
| 84 | static inline int xen_pvh_setup_gsi(int gsi, int trigger, int polarity)
|
| 85 | {
|
| 86 | return -1;
|
| 87 | }
|
| 88 |
|
| 89 | static 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 |
|
| 97 | static inline void xen_acpi_register_get_gsi_func(get_gsi_from_sbdf_t func)
|
| 98 | {
|
| 99 | }
|
| 100 |
|
| 101 | static inline int xen_acpi_get_gsi_from_sbdf(u32 sbdf)
|
| 102 | {
|
| 103 | return -1;
|
| 104 | }
|
| 105 | #endif
|
| 106 |
|
| 107 | #endif
|