1 /* 2 * Copyright(c) 2015-2017 Intel Corporation. 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * BSD LICENSE 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 24 * - Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * - Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in 28 * the documentation and/or other materials provided with the 29 * distribution. 30 * - Neither the name of Intel Corporation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45 * 46 */ 47 #ifndef _ASPM_H 48 #define _ASPM_H 49 50 #include "hfi.h" 51 52 extern uint aspm_mode; 53 54 enum aspm_mode { 55 ASPM_MODE_DISABLED = 0, /* ASPM always disabled, performance mode */ 56 ASPM_MODE_ENABLED = 1, /* ASPM always enabled, power saving mode */ 57 ASPM_MODE_DYNAMIC = 2, /* ASPM enabled/disabled dynamically */ 58 }; 59 60 void aspm_init(struct hfi1_devdata *dd); 61 void aspm_exit(struct hfi1_devdata *dd); 62 void aspm_hw_disable_l1(struct hfi1_devdata *dd); 63 void __aspm_ctx_disable(struct hfi1_ctxtdata *rcd); 64 void aspm_disable_all(struct hfi1_devdata *dd); 65 void aspm_enable_all(struct hfi1_devdata *dd); 66 67 static inline void aspm_ctx_disable(struct hfi1_ctxtdata *rcd) 68 { 69 /* Quickest exit for minimum impact */ 70 if (likely(!rcd->aspm_intr_supported)) 71 return; 72 73 __aspm_ctx_disable(rcd); 74 } 75 76 #endif /* _ASPM_H */ 77