drm/amdgpu: add mmhub clock gating for Arcturus

Add 2 mmhub instances CG

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index cf0241e..e48fd19 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1469,9 +1469,9 @@ static int gmc_v9_0_set_clockgating_state(void *handle,
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
        if (adev->asic_type == CHIP_ARCTURUS)
-               return 0;
-
-       mmhub_v1_0_set_clockgating(adev, state);
+               mmhub_v9_4_set_clockgating(adev, state);
+       else
+               mmhub_v1_0_set_clockgating(adev, state);
 
        athub_v1_0_set_clockgating(adev, state);
 
@@ -1483,9 +1483,9 @@ static void gmc_v9_0_get_clockgating_state(void *handle, u32 *flags)
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
        if (adev->asic_type == CHIP_ARCTURUS)
-               return;
-
-       mmhub_v1_0_get_clockgating(adev, flags);
+               mmhub_v9_4_get_clockgating(adev, flags);
+       else
+               mmhub_v1_0_get_clockgating(adev, flags);
 
        athub_v1_0_get_clockgating(adev, flags);
 }

diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c
index 33b0de5..e52e4d1 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c
@@ -515,3 +515,129 @@ void mmhub_v9_4_init(struct amdgpu_device *adev)
                                    i * MMHUB_INSTANCE_REGISTER_OFFSET;
        }
 }
+
+static void mmhub_v9_4_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+                                                       bool enable)
+{
+       uint32_t def, data, def1, data1;
+       int i, j;
+       int dist = mmDAGB1_CNTL_MISC2 - mmDAGB0_CNTL_MISC2;
+
+       for (i = 0; i < MMHUB_NUM_INSTANCES; i++) {
+               def = data = RREG32_SOC15_OFFSET(MMHUB, 0,
+                                       mmATCL2_0_ATC_L2_MISC_CG,
+                                       i * MMHUB_INSTANCE_REGISTER_OFFSET);
+
+               if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG))
+                       data |= ATCL2_0_ATC_L2_MISC_CG__ENABLE_MASK;
+               else
+                       data &= ~ATCL2_0_ATC_L2_MISC_CG__ENABLE_MASK;
+
+               if (def != data)
+                       WREG32_SOC15_OFFSET(MMHUB, 0, mmATCL2_0_ATC_L2_MISC_CG,
+                               i * MMHUB_INSTANCE_REGISTER_OFFSET, data);
+
+               for (j = 0; j < 5; j++) {
+                       def1 = data1 = RREG32_SOC15_OFFSET(MMHUB, 0,
+                                       mmDAGB0_CNTL_MISC2,
+                                       i * MMHUB_INSTANCE_REGISTER_OFFSET +
+                                       j * dist);
+                       if (enable &&
+                           (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG)) {
+                               data1 &=
+                                   ~(DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK);
+                       } else {
+                               data1 |=
+                                   (DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK |
+                                   DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK);
+                       }
+
+                       if (def1 != data1)
+                               WREG32_SOC15_OFFSET(MMHUB, 0,
+                                       mmDAGB0_CNTL_MISC2,
+                                       i * MMHUB_INSTANCE_REGISTER_OFFSET +
+                                       j * dist, data1);
+
+                       if (i == 1 && j == 3)
+                               break;
+               }
+       }
+}
+
+static void mmhub_v9_4_update_medium_grain_light_sleep(struct amdgpu_device *adev,
+                                                      bool enable)
+{
+       uint32_t def, data;
+       int i;
+
+       for (i = 0; i < MMHUB_NUM_INSTANCES; i++) {
+               def = data = RREG32_SOC15_OFFSET(MMHUB, 0,
+                                       mmATCL2_0_ATC_L2_MISC_CG,
+                                       i * MMHUB_INSTANCE_REGISTER_OFFSET);
+
+               if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS))
+                       data |= ATCL2_0_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK;
+               else
+                       data &= ~ATCL2_0_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK;
+
+               if (def != data)
+                       WREG32_SOC15_OFFSET(MMHUB, 0, mmATCL2_0_ATC_L2_MISC_CG,
+                               i * MMHUB_INSTANCE_REGISTER_OFFSET, data);
+       }
+}
+
+int mmhub_v9_4_set_clockgating(struct amdgpu_device *adev,
+                              enum amd_clockgating_state state)
+{
+       if (amdgpu_sriov_vf(adev))
+               return 0;
+
+       switch (adev->asic_type) {
+       case CHIP_ARCTURUS:
+               mmhub_v9_4_update_medium_grain_clock_gating(adev,
+                               state == AMD_CG_STATE_GATE ? true : false);
+               mmhub_v9_4_update_medium_grain_light_sleep(adev,
+                               state == AMD_CG_STATE_GATE ? true : false);
+               break;
+       default:
+               break;
+       }
+
+       return 0;
+}
+
+/* TODO: get 2 mmhub instances CG state */
+void mmhub_v9_4_get_clockgating(struct amdgpu_device *adev, u32 *flags)
+{
+       int data, data1;
+
+       if (amdgpu_sriov_vf(adev))
+               *flags = 0;
+
+       /* AMD_CG_SUPPORT_MC_MGCG */
+       data = RREG32_SOC15(MMHUB, 0, mmATCL2_0_ATC_L2_MISC_CG);
+
+       data1 = RREG32_SOC15(MMHUB, 0, mmATCL2_0_ATC_L2_MISC_CG);
+
+       if ((data & ATCL2_0_ATC_L2_MISC_CG__ENABLE_MASK) &&
+           !(data1 & (DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK |
+                      DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK |
+                      DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK |
+                      DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK |
+                      DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK |
+                      DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK)))
+               *flags |= AMD_CG_SUPPORT_MC_MGCG;
+
+       /* AMD_CG_SUPPORT_MC_LS */
+       if (data & ATCL2_0_ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK)
+               *flags |= AMD_CG_SUPPORT_MC_LS;
+}

diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.h b/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.h
index 9ba3dd8..d435cfc 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.h
+++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.h
@@ -29,5 +29,8 @@ void mmhub_v9_4_gart_disable(struct amdgpu_device *adev);
 void mmhub_v9_4_set_fault_enable_default(struct amdgpu_device *adev,
                                         bool value);
 void mmhub_v9_4_init(struct amdgpu_device *adev);
+int mmhub_v9_4_set_clockgating(struct amdgpu_device *adev,
+                              enum amd_clockgating_state state);
+void mmhub_v9_4_get_clockgating(struct amdgpu_device *adev, u32 *flags);
 
 #endif