drivers/gpu/drm/amd/amdgpu/hdp_v4_0.c

   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
  40 static 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
  49 static void hdp_v4_0_invalidate_hdp(struct amdgpu_device *adev,
  50                                     struct amdgpu_ring *ring)
  51 {
  52         if (amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 4, 0) ||
  53             amdgpu_ip_version(adev, HDP_HWIP, 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
  63 static 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, 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
  78 static void hdp_v4_0_reset_ras_error_count(struct amdgpu_device *adev)
  79 {
  80         if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__HDP))
  81                 return;
  82
  83         if (amdgpu_ip_version(adev, HDP_HWIP, 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
  90 static 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, HDP_HWIP, 0) == IP_VERSION(4, 0, 0) ||
  96             amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 0, 1) ||
  97             amdgpu_ip_version(adev, HDP_HWIP, 0) == IP_VERSION(4, 1, 1) ||
  98             amdgpu_ip_version(adev, HDP_HWIP, 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
 127 static 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, HDP_HWIP, 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
 143 static void hdp_v4_0_init_registers(struct amdgpu_device *adev)
 144 {
 145         switch (amdgpu_ip_version(adev, HDP_HWIP, 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, HDP_HWIP, 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
 166 struct 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
 171 struct amdgpu_hdp_ras hdp_v4_0_ras = {
 172         .ras_block = {
 173                 .hw_ops = &hdp_v4_0_ras_hw_ops,
 174         },
 175 };
 176
 177 const 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 };