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 } 63