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_v6_0.h" |
26 | |
27 | #include "hdp/hdp_6_0_0_offset.h" |
28 | #include "hdp/hdp_6_0_0_sh_mask.h" |
29 | #include <uapi/linux/kfd_ioctl.h> |
30 | |
31 | #define regHDP_CLK_CNTL_V6_1 0xd5 |
32 | #define regHDP_CLK_CNTL_V6_1_BASE_IDX 0 |
33 | |
34 | static void hdp_v6_0_flush_hdp(struct amdgpu_device *adev, |
35 | struct amdgpu_ring *ring) |
36 | { |
37 | if (!ring || !ring->funcs->emit_wreg) |
38 | WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); |
39 | else |
40 | amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0); |
41 | } |
42 | |
43 | static void hdp_v6_0_update_clock_gating(struct amdgpu_device *adev, |
44 | bool enable) |
45 | { |
46 | uint32_t hdp_clk_cntl; |
47 | uint32_t hdp_mem_pwr_cntl; |
48 | |
49 | if (!(adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | |
50 | AMD_CG_SUPPORT_HDP_DS | |
51 | AMD_CG_SUPPORT_HDP_SD))) |
52 | return; |
53 | |
54 | if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(6, 1, 0)) |
55 | hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL_V6_1); |
56 | else |
57 | hdp_clk_cntl = RREG32_SOC15(HDP, 0, regHDP_CLK_CNTL); |
58 | hdp_mem_pwr_cntl = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL); |
59 | |
60 | /* Before doing clock/power mode switch, |
61 | * forced on IPH & RC clock */ |
62 | hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL, |
63 | RC_MEM_CLK_SOFT_OVERRIDE, 1); |
64 | if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(6, 1, 0)) |
65 | WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL_V6_1, hdp_clk_cntl); |
66 | else |
67 | WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl); |
68 | |
69 | /* disable clock and power gating before any changing */ |
70 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
71 | ATOMIC_MEM_POWER_CTRL_EN, 0); |
72 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
73 | ATOMIC_MEM_POWER_LS_EN, 0); |
74 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
75 | ATOMIC_MEM_POWER_DS_EN, 0); |
76 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
77 | ATOMIC_MEM_POWER_SD_EN, 0); |
78 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
79 | RC_MEM_POWER_CTRL_EN, 0); |
80 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
81 | RC_MEM_POWER_LS_EN, 0); |
82 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
83 | RC_MEM_POWER_DS_EN, 0); |
84 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
85 | RC_MEM_POWER_SD_EN, 0); |
86 | WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl); |
87 | |
88 | /* Already disabled above. The actions below are for "enabled" only */ |
89 | if (enable) { |
90 | /* only one clock gating mode (LS/DS/SD) can be enabled */ |
91 | if (adev->cg_flags & AMD_CG_SUPPORT_HDP_SD) { |
92 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
93 | HDP_MEM_POWER_CTRL, |
94 | ATOMIC_MEM_POWER_SD_EN, 1); |
95 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
96 | HDP_MEM_POWER_CTRL, |
97 | RC_MEM_POWER_SD_EN, 1); |
98 | } else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS) { |
99 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
100 | HDP_MEM_POWER_CTRL, |
101 | ATOMIC_MEM_POWER_LS_EN, 1); |
102 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
103 | HDP_MEM_POWER_CTRL, |
104 | RC_MEM_POWER_LS_EN, 1); |
105 | } else if (adev->cg_flags & AMD_CG_SUPPORT_HDP_DS) { |
106 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
107 | HDP_MEM_POWER_CTRL, |
108 | ATOMIC_MEM_POWER_DS_EN, 1); |
109 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, |
110 | HDP_MEM_POWER_CTRL, |
111 | RC_MEM_POWER_DS_EN, 1); |
112 | } |
113 | |
114 | /* confirmed that IPH_MEM_POWER_CTRL_EN and RC_MEM_POWER_CTRL_EN have to |
115 | * be set for SRAM LS/DS/SD */ |
116 | if (adev->cg_flags & (AMD_CG_SUPPORT_HDP_LS | AMD_CG_SUPPORT_HDP_DS | |
117 | AMD_CG_SUPPORT_HDP_SD)) { |
118 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
119 | ATOMIC_MEM_POWER_CTRL_EN, 1); |
120 | hdp_mem_pwr_cntl = REG_SET_FIELD(hdp_mem_pwr_cntl, HDP_MEM_POWER_CTRL, |
121 | RC_MEM_POWER_CTRL_EN, 1); |
122 | WREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL, hdp_mem_pwr_cntl); |
123 | } |
124 | } |
125 | |
126 | /* disable IPH & RC clock override after clock/power mode changing */ |
127 | hdp_clk_cntl = REG_SET_FIELD(hdp_clk_cntl, HDP_CLK_CNTL, |
128 | RC_MEM_CLK_SOFT_OVERRIDE, 0); |
129 | if (amdgpu_ip_version(adev, ip: HDP_HWIP, inst: 0) == IP_VERSION(6, 1, 0)) |
130 | WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL_V6_1, hdp_clk_cntl); |
131 | else |
132 | WREG32_SOC15(HDP, 0, regHDP_CLK_CNTL, hdp_clk_cntl); |
133 | } |
134 | |
135 | static void hdp_v6_0_get_clockgating_state(struct amdgpu_device *adev, |
136 | u64 *flags) |
137 | { |
138 | uint32_t tmp; |
139 | |
140 | /* AMD_CG_SUPPORT_HDP_LS/DS/SD */ |
141 | tmp = RREG32_SOC15(HDP, 0, regHDP_MEM_POWER_CTRL); |
142 | if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_LS_EN_MASK) |
143 | *flags |= AMD_CG_SUPPORT_HDP_LS; |
144 | else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_DS_EN_MASK) |
145 | *flags |= AMD_CG_SUPPORT_HDP_DS; |
146 | else if (tmp & HDP_MEM_POWER_CTRL__ATOMIC_MEM_POWER_SD_EN_MASK) |
147 | *flags |= AMD_CG_SUPPORT_HDP_SD; |
148 | } |
149 | |
150 | const struct amdgpu_hdp_funcs hdp_v6_0_funcs = { |
151 | .flush_hdp = hdp_v6_0_flush_hdp, |
152 | .update_clock_gating = hdp_v6_0_update_clock_gating, |
153 | .get_clock_gating_state = hdp_v6_0_get_clockgating_state, |
154 | }; |
155 | |