1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright(c) 2015-2017 Intel Corporation.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This file is provided under a dual BSD/GPLv2 license. When using or
5*4882a593Smuzhiyun * redistributing this file, you may do so under either license.
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * GPL LICENSE SUMMARY
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify
10*4882a593Smuzhiyun * it under the terms of version 2 of the GNU General Public License as
11*4882a593Smuzhiyun * published by the Free Software Foundation.
12*4882a593Smuzhiyun *
13*4882a593Smuzhiyun * This program is distributed in the hope that it will be useful, but
14*4882a593Smuzhiyun * WITHOUT ANY WARRANTY; without even the implied warranty of
15*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16*4882a593Smuzhiyun * General Public License for more details.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * BSD LICENSE
19*4882a593Smuzhiyun *
20*4882a593Smuzhiyun * Redistribution and use in source and binary forms, with or without
21*4882a593Smuzhiyun * modification, are permitted provided that the following conditions
22*4882a593Smuzhiyun * are met:
23*4882a593Smuzhiyun *
24*4882a593Smuzhiyun * - Redistributions of source code must retain the above copyright
25*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer.
26*4882a593Smuzhiyun * - Redistributions in binary form must reproduce the above copyright
27*4882a593Smuzhiyun * notice, this list of conditions and the following disclaimer in
28*4882a593Smuzhiyun * the documentation and/or other materials provided with the
29*4882a593Smuzhiyun * distribution.
30*4882a593Smuzhiyun * - Neither the name of Intel Corporation nor the names of its
31*4882a593Smuzhiyun * contributors may be used to endorse or promote products derived
32*4882a593Smuzhiyun * from this software without specific prior written permission.
33*4882a593Smuzhiyun *
34*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
35*4882a593Smuzhiyun * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
36*4882a593Smuzhiyun * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
37*4882a593Smuzhiyun * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
38*4882a593Smuzhiyun * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
39*4882a593Smuzhiyun * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
40*4882a593Smuzhiyun * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
41*4882a593Smuzhiyun * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
42*4882a593Smuzhiyun * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43*4882a593Smuzhiyun * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
44*4882a593Smuzhiyun * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45*4882a593Smuzhiyun *
46*4882a593Smuzhiyun */
47*4882a593Smuzhiyun #ifndef _ASPM_H
48*4882a593Smuzhiyun #define _ASPM_H
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun #include "hfi.h"
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun extern uint aspm_mode;
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun enum aspm_mode {
55*4882a593Smuzhiyun ASPM_MODE_DISABLED = 0, /* ASPM always disabled, performance mode */
56*4882a593Smuzhiyun ASPM_MODE_ENABLED = 1, /* ASPM always enabled, power saving mode */
57*4882a593Smuzhiyun ASPM_MODE_DYNAMIC = 2, /* ASPM enabled/disabled dynamically */
58*4882a593Smuzhiyun };
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun void aspm_init(struct hfi1_devdata *dd);
61*4882a593Smuzhiyun void aspm_exit(struct hfi1_devdata *dd);
62*4882a593Smuzhiyun void aspm_hw_disable_l1(struct hfi1_devdata *dd);
63*4882a593Smuzhiyun void __aspm_ctx_disable(struct hfi1_ctxtdata *rcd);
64*4882a593Smuzhiyun void aspm_disable_all(struct hfi1_devdata *dd);
65*4882a593Smuzhiyun void aspm_enable_all(struct hfi1_devdata *dd);
66*4882a593Smuzhiyun
aspm_ctx_disable(struct hfi1_ctxtdata * rcd)67*4882a593Smuzhiyun static inline void aspm_ctx_disable(struct hfi1_ctxtdata *rcd)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun /* Quickest exit for minimum impact */
70*4882a593Smuzhiyun if (likely(!rcd->aspm_intr_supported))
71*4882a593Smuzhiyun return;
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun __aspm_ctx_disable(rcd);
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun #endif /* _ASPM_H */
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