radeon_trinity_smc.c revision 1.1 
1/*	$NetBSD: radeon_trinity_smc.c,v 1.1 2018/08/27 14:38:20 riastradh Exp $	*/
2
3/*
4 * Copyright 2012 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: radeon_trinity_smc.c,v 1.1 2018/08/27 14:38:20 riastradh Exp $");
28
29#include "drmP.h"
30#include "radeon.h"
31#include "trinityd.h"
32#include "trinity_dpm.h"
33#include "ppsmc.h"
34
35static int trinity_notify_message_to_smu(struct radeon_device *rdev, u32 id)
36{
37	int i;
38	u32 v = 0;
39
40	WREG32(SMC_MESSAGE_0, id);
41	for (i = 0; i < rdev->usec_timeout; i++) {
42		if (RREG32(SMC_RESP_0) != 0)
43			break;
44		udelay(1);
45	}
46	v = RREG32(SMC_RESP_0);
47
48	if (v != 1) {
49		if (v == 0xFF) {
50			DRM_ERROR("SMC failed to handle the message!\n");
51			return -EINVAL;
52		} else if (v == 0xFE) {
53			DRM_ERROR("Unknown SMC message!\n");
54			return -EINVAL;
55		}
56	}
57
58	return 0;
59}
60
61int trinity_dpm_bapm_enable(struct radeon_device *rdev, bool enable)
62{
63	if (enable)
64		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_EnableBAPM);
65	else
66		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DisableBAPM);
67}
68
69int trinity_dpm_config(struct radeon_device *rdev, bool enable)
70{
71	if (enable)
72		WREG32_SMC(SMU_SCRATCH0, 1);
73	else
74		WREG32_SMC(SMU_SCRATCH0, 0);
75
76	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_Config);
77}
78
79int trinity_dpm_force_state(struct radeon_device *rdev, u32 n)
80{
81	WREG32_SMC(SMU_SCRATCH0, n);
82
83	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_ForceState);
84}
85
86int trinity_dpm_n_levels_disabled(struct radeon_device *rdev, u32 n)
87{
88	WREG32_SMC(SMU_SCRATCH0, n);
89
90	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DPM_N_LevelsDisabled);
91}
92
93int trinity_uvd_dpm_config(struct radeon_device *rdev)
94{
95	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_UVD_DPM_Config);
96}
97
98int trinity_dpm_no_forced_level(struct radeon_device *rdev)
99{
100	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_NoForcedLevel);
101}
102
103int trinity_dce_enable_voltage_adjustment(struct radeon_device *rdev,
104					  bool enable)
105{
106	if (enable)
107		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_AllowVoltageAdjustment);
108	else
109		return trinity_notify_message_to_smu(rdev, PPSMC_MSG_DCE_RemoveVoltageAdjustment);
110}
111
112int trinity_gfx_dynamic_mgpg_config(struct radeon_device *rdev)
113{
114	return trinity_notify_message_to_smu(rdev, PPSMC_MSG_PG_SIMD_Config);
115}
116
117void trinity_acquire_mutex(struct radeon_device *rdev)
118{
119	int i;
120
121	WREG32(SMC_INT_REQ, 1);
122	for (i = 0; i < rdev->usec_timeout; i++) {
123		if ((RREG32(SMC_INT_REQ) & 0xffff) == 1)
124			break;
125		udelay(1);
126	}
127}
128
129void trinity_release_mutex(struct radeon_device *rdev)
130{
131	WREG32(SMC_INT_REQ, 0);
132}
133