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77 lines
2.7 KiB
77 lines
2.7 KiB
/****************************************************************************** |
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* acpi.c |
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* acpi file for domain 0 kernel |
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* |
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* Copyright (c) 2011 Konrad Rzeszutek Wilk <[email protected]> |
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* Copyright (c) 2011 Yu Ke [email protected] |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License version 2 |
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* as published by the Free Software Foundation; or, when distributed |
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* separately from the Linux kernel or incorporated into other |
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* software packages, subject to the following license: |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this source file (the "Software"), to deal in the Software without |
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* restriction, including without limitation the rights to use, copy, modify, |
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, |
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* and to permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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* IN THE SOFTWARE. |
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*/ |
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#include <xen/acpi.h> |
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#include <xen/interface/platform.h> |
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#include <asm/xen/hypercall.h> |
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#include <asm/xen/hypervisor.h> |
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static int xen_acpi_notify_hypervisor_state(u8 sleep_state, |
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u32 val_a, u32 val_b, |
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bool extended) |
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{ |
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unsigned int bits = extended ? 8 : 16; |
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struct xen_platform_op op = { |
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.cmd = XENPF_enter_acpi_sleep, |
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.interface_version = XENPF_INTERFACE_VERSION, |
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.u.enter_acpi_sleep = { |
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.val_a = (u16)val_a, |
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.val_b = (u16)val_b, |
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.sleep_state = sleep_state, |
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.flags = extended ? XENPF_ACPI_SLEEP_EXTENDED : 0, |
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}, |
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}; |
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if (WARN((val_a & (~0 << bits)) || (val_b & (~0 << bits)), |
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"Using more than %u bits of sleep control values %#x/%#x!" |
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"Email [email protected] - Thank you.\n", \ |
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bits, val_a, val_b)) |
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return -1; |
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HYPERVISOR_platform_op(&op); |
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return 1; |
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} |
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int xen_acpi_notify_hypervisor_sleep(u8 sleep_state, |
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u32 pm1a_cnt, u32 pm1b_cnt) |
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{ |
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return xen_acpi_notify_hypervisor_state(sleep_state, pm1a_cnt, |
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pm1b_cnt, false); |
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} |
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int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_state, |
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u32 val_a, u32 val_b) |
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{ |
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return xen_acpi_notify_hypervisor_state(sleep_state, val_a, |
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val_b, true); |
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}
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