| Konrad Rzeszutek Wilk | 211063d | 2011-12-08 17:32:23 +0800 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * acpi.c |
| 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 | #include <xen/acpi.h> |
| 34 | #include <xen/interface/platform.h> |
| 35 | #include <asm/xen/hypercall.h> |
| 36 | #include <asm/xen/hypervisor.h> |
| 37 | |
| 38 | int xen_acpi_notify_hypervisor_state(u8 sleep_state, |
| 39 | u32 pm1a_cnt, u32 pm1b_cnt) |
| 40 | { |
| 41 | struct xen_platform_op op = { |
| 42 | .cmd = XENPF_enter_acpi_sleep, |
| 43 | .interface_version = XENPF_INTERFACE_VERSION, |
| 44 | .u = { |
| 45 | .enter_acpi_sleep = { |
| 46 | .pm1a_cnt_val = (u16)pm1a_cnt, |
| 47 | .pm1b_cnt_val = (u16)pm1b_cnt, |
| 48 | .sleep_state = sleep_state, |
| 49 | }, |
| 50 | }, |
| 51 | }; |
| 52 | |
| 53 | if ((pm1a_cnt & 0xffff0000) || (pm1b_cnt & 0xffff0000)) { |
| 54 | WARN(1, "Using more than 16bits of PM1A/B 0x%x/0x%x!" |
| 55 | "Email xen-devel@lists.xensource.com Thank you.\n", \ |
| 56 | pm1a_cnt, pm1b_cnt); |
| 57 | return -1; |
| 58 | } |
| 59 | |
| 60 | HYPERVISOR_dom0_op(&op); |
| 61 | return 1; |
| 62 | } |