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 (!ring || !ring->funcs->emit_wreg)
  53                 WREG32_SOC15_NO_KIQ(HDP, 0, mmHDP_READ_CACHE_INVALIDATE, 1);
  54         else
  55                 amdgpu_ring_emit_wreg(ring, SOC15_REG_OFFSET(
  56                         HDP, 0, mmHDP_READ_CACHE_INVALIDATE), 1);
  57 }
  58
  59 static void hdp_v4_0_reset_ras_error_count(struct amdgpu_device *adev)
  60 {
  61         if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__HDP))
  62                 return;
  63         /*read back hdp ras counter to reset it to 0 */
  64         RREG32_SOC15(HDP, 0, mmHDP_EDC_CNT);
  65 }
  66
  67 static void hdp_v4_0_update_clock_gating(struct amdgpu_device *adev,
  68                                          bool enable)
  69 {
  70         uint32_t def, data;
  71
  72         if (adev->asic_type == CHIP_VEGA10 ||
  73             adev->asic_type == CHIP_VEGA12 ||
  74             adev->asic_type == CHIP_RAVEN) {
  75                 def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
  76
  77                 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
  78                         data |= HDP_MEM_POWER_LS__LS_ENABLE_MASK;
  79                 else
  80                         data &= ~HDP_MEM_POWER_LS__LS_ENABLE_MASK;
  81
  82                 if (def != data)
  83                         WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS), data);
  84         } else {
  85                 def = data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL));
  86
  87                 if (enable && (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
  88                         data |= HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
  89                                 HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
  90                                 HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
  91                                 HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK;
  92                 else
  93                         data &= ~(HDP_MEM_POWER_CTRL__IPH_MEM_POWER_CTRL_EN_MASK |
  94                                   HDP_MEM_POWER_CTRL__IPH_MEM_POWER_LS_EN_MASK |
  95                                   HDP_MEM_POWER_CTRL__RC_MEM_POWER_CTRL_EN_MASK |
  96                                   HDP_MEM_POWER_CTRL__RC_MEM_POWER_LS_EN_MASK);
  97
  98                 if (def != data)
  99                         WREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_CTRL), data);
 100         }
 101 }
 102
 103 static void hdp_v4_0_get_clockgating_state(struct amdgpu_device *adev,
 104                                             u32 *flags)
 105 {
 106         int data;
 107
 108         /* AMD_CG_SUPPORT_HDP_LS */
 109         data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
 110         if (data & HDP_MEM_POWER_LS__LS_ENABLE_MASK)
 111                 *flags |= AMD_CG_SUPPORT_HDP_LS;
 112 }
 113
 114 static void hdp_v4_0_init_registers(struct amdgpu_device *adev)
 115 {
 116         switch (adev->asic_type) {
 117         case CHIP_ARCTURUS:
 118                 WREG32_FIELD15(HDP, 0, HDP_MMHUB_CNTL, HDP_MMHUB_GCC, 1);
 119                 break;
 120         default:
 121                 break;
 122         }
 123
 124         WREG32_FIELD15(HDP, 0, HDP_MISC_CNTL, FLUSH_INVALIDATE_CACHE, 1);
 125
 126         WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE, (adev->gmc.vram_start >> 8));
 127         WREG32_SOC15(HDP, 0, mmHDP_NONSURFACE_BASE_HI, (adev->gmc.vram_start >> 40));
 128 }
 129
 130 const struct amdgpu_hdp_funcs hdp_v4_0_funcs = {
 131         .flush_hdp = hdp_v4_0_flush_hdp,
 132         .invalidate_hdp = hdp_v4_0_invalidate_hdp,
 133         .reset_ras_error_count = hdp_v4_0_reset_ras_error_count,
 134         .update_clock_gating = hdp_v4_0_update_clock_gating,
 135         .get_clock_gating_state = hdp_v4_0_get_clockgating_state,
 136         .init_registers = hdp_v4_0_init_registers,
 137 };