1/*
2 * Copyright 2020 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 */
23#include "amdgpu.h"
24#include "amdgpu_atombios.h"
25#include "hdp_v4_0.h"
26#include "amdgpu_ras.h"
27
28#include "hdp/hdp_4_0_offset.h"
29#include "hdp/hdp_4_0_sh_mask.h"
30#include <uapi/linux/kfd_ioctl.h>
31
32/* for Vega20 register name change */
33#define mmHDP_MEM_POWER_CTRL 0x00d4
34#define HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK 0x00000001L
35#define HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK 0x00000002L
36#define HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK 0x00010000L
37#define HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK 0x00020000L
38#define mmHDP_MEM_POWER_CTRL_BASE_IDX 0
39
40static void hdp_v4_0_flush_hdp(struct amdgpu_device *adev,
41 struct amdgpu_ring *ring)
42{
43 if (!ring || !ring->funcs->emit_wreg)
44 WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
45 else
46 amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
47}
48
49static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev,
50 struct amdgpu_ring *ring)
51{
52 if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 4, 0) ||
53 amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 4, 2))
54 return;
55
56 if (!ring || !ring->funcs->emit_wreg)
57 WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1);
58 else
59 amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET(
60 HDP, 0, mmHDP_READ_CACHE_INVALIDATE), 1);
61}
62
63static void hdp_v4_0_query_ras_error_count(struct amdgpu_device *adev,
64 void *ras_error_status)
65{
66 struct ras_err_data *err_data = (struct ras_err_data *)ras_error_status;
67
68 err_data->ue_count = 0;
69 err_data->ce_count = 0;
70
71 if (!amdgpu_ras_is_supported(adev, block: AMDGPU_RAS_BLOCK__HDP))
72 return;
73
74 /* HDP SRAM errors are uncorrectable ones (i.e. fatal errors) */
75 err_data->ue_count += RREG32_SOC15(HDP, 0, mmHDP_EDC_CNT);
76};
77
78static void hdp_v4_0_reset_ras_error_count(struct amdgpu_device *adev)
79{
80 if (!amdgpu_ras_is_supported(adev, block: AMDGPU_RAS_BLOCK__HDP))
81 return;
82
83 if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) >= IP_VERSION(4, 4, 0))
84 WREG32_SOC15(HDP, 0, mmHDP_EDC_CNT, 0);
85 else
86 /*read back hdp ras counter to reset it to 0 */
87 RREG32_SOC15(HDP, 0, mmHDP_EDC_CNT);
88}
89
90static void hdp_v4_0_update_clock_gating(struct amdgpu_device *adev,
91 bool enable)
92{
93 uint32_t def, data;
94
95 if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 0, 0) ||
96 amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 0, 1) ||
97 amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 1, 1) ||
98 amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 1, 0)) {
99 def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
100
101 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
102 data |= HDP_MEM_POWER_LS__LS_ENABLE_MASK;
103 else
104 data &= ~HDP_MEM_POWER_LS__LS_ENABLE_MASK;
105
106 if (def != data)
107 WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS), data);
108 } else {
109 def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL));
110
111 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
112 data |= HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
113 HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
114 HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
115 HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK;
116 else
117 data &= ~(HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
118 HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
119 HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
120 HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK);
121
122 if (def != data)
123 WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL), data);
124 }
125}
126
127static void hdp_v4_0_get_clockgating_state(struct amdgpu_device *adev,
128 u64 *flags)
129{
130 int data;
131
132 if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 4, 2)) {
133 /* Default enabled */
134 *flags |= AMD_CG_SUPPORT_HDP_MGCG;
135 return;
136 }
137 /* AMD_CG_SUPPORT_HDP_LS */
138 data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
139 if (data & HDP_MEM_POWER_LS__LS_ENABLE_MASK)
140 *flags |= AMD_CG_SUPPORT_HDP_LS;
141}
142
143static void hdp_v4_0_init_registers(struct amdgpu_device *adev)
144{
145 switch (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0)) {
146 case IP_VERSION(4, 2, 1):
147 WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1);
148 break;
149 default:
150 break;
151 }
152
153 /* Do not program registers if VF */
154 if (amdgpu_sriov_vf(adev))
155 return;
156
157 WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, FLUSH_INVALIDATE_CACHE, 1);
158
159 if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(4, 4, 0))
160 WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, READ_BUFFER_WATERMARK, 2);
161
162 WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE, (adev->gmc.vram_start >> 8));
163 WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE_HI, (adev->gmc.vram_start >> 40));
164}
165
166struct amdgpu_ras_block_hw_ops hdp_v4_0_ras_hw_ops = {
167 .query_ras_error_count = hdp_v4_0_query_ras_error_count,
168 .reset_ras_error_count = hdp_v4_0_reset_ras_error_count,
169};
170
171struct amdgpu_hdp_ras hdp_v4_0_ras = {
172 .ras_block = {
173 .hw_ops = &hdp_v4_0_ras_hw_ops,
174 },
175};
176
177const struct amdgpu_hdp_funcs hdp_v4_0_funcs = {
178 .flush_hdp = hdp_v4_0_flush_hdp,
179 .invalidate_hdp = hdp_v4_0_invalidate_hdp,
180 .update_clock_gating = hdp_v4_0_update_clock_gating,
181 .get_clock_gating_state = hdp_v4_0_get_clockgating_state,
182 .init_registers = hdp_v4_0_init_registers,
183};
184

source code of linux/drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c