1 /* $NetBSD: amdgpu_vega20_powertune.c,v 1.2 2021/12/18 23:45:26 riastradh Exp $ */
2
3 /*
4 * Copyright 2018 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 */
25
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: amdgpu_vega20_powertune.c,v 1.2 2021/12/18 23:45:26 riastradh Exp $");
28
29 #include "hwmgr.h"
30 #include "vega20_hwmgr.h"
31 #include "vega20_powertune.h"
32 #include "vega20_smumgr.h"
33 #include "vega20_ppsmc.h"
34 #include "vega20_inc.h"
35 #include "pp_debug.h"
36
vega20_set_power_limit(struct pp_hwmgr * hwmgr,uint32_t n)37 int vega20_set_power_limit(struct pp_hwmgr *hwmgr, uint32_t n)
38 {
39 struct vega20_hwmgr *data =
40 (struct vega20_hwmgr *)(hwmgr->backend);
41
42 if (data->smu_features[GNLD_PPT].enabled)
43 return smum_send_msg_to_smc_with_parameter(hwmgr,
44 PPSMC_MSG_SetPptLimit, n);
45
46 return 0;
47 }
48
vega20_validate_power_level_request(struct pp_hwmgr * hwmgr,uint32_t tdp_percentage_adjustment,uint32_t tdp_absolute_value_adjustment)49 int vega20_validate_power_level_request(struct pp_hwmgr *hwmgr,
50 uint32_t tdp_percentage_adjustment, uint32_t tdp_absolute_value_adjustment)
51 {
52 return (tdp_percentage_adjustment > hwmgr->platform_descriptor.TDPLimit) ? -1 : 0;
53 }
54
vega20_set_overdrive_target_percentage(struct pp_hwmgr * hwmgr,uint32_t adjust_percent)55 static int vega20_set_overdrive_target_percentage(struct pp_hwmgr *hwmgr,
56 uint32_t adjust_percent)
57 {
58 return smum_send_msg_to_smc_with_parameter(hwmgr,
59 PPSMC_MSG_OverDriveSetPercentage, adjust_percent);
60 }
61
vega20_power_control_set_level(struct pp_hwmgr * hwmgr)62 int vega20_power_control_set_level(struct pp_hwmgr *hwmgr)
63 {
64 int adjust_percent, result = 0;
65
66 if (PP_CAP(PHM_PlatformCaps_PowerContainment)) {
67 adjust_percent =
68 hwmgr->platform_descriptor.TDPAdjustmentPolarity ?
69 hwmgr->platform_descriptor.TDPAdjustment :
70 (-1 * hwmgr->platform_descriptor.TDPAdjustment);
71 result = vega20_set_overdrive_target_percentage(hwmgr,
72 (uint32_t)adjust_percent);
73 }
74 return result;
75 }
76