[PATCH 3/4] drm/amdgpu: add mmhub clock gating for Arcturus
Wang, Kevin(Yang)
Kevin1.Wang at amd.com
Fri Aug 9 11:29:38 UTC 2019
Reviewed-by: Kevin Wang <kevin1.wang at amd.com>
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Le Ma <le.ma at amd.com>
Sent: Friday, August 9, 2019 7:26 PM
To: amd-gfx at lists.freedesktop.org <amd-gfx at lists.freedesktop.org>
Cc: Ma, Le <Le.Ma at amd.com>
Subject: [PATCH 3/4] drm/amdgpu: add mmhub clock gating for Arcturus
Add 2 mmhub instances CG
Change-Id: I76ab7a50cd9a40de3022f733787b42e4e5c4dbf5
Signed-off-by: Le Ma <le.ma at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 12 +--
drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.c | 126 ++++++++++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/mmhub_v9_4.h | 3 +
3 files changed, 135 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index cccb6e9..44ac122 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1465,9 +1465,9 @@ 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);
@@ -1479,9 +1479,9 @@ 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
--- 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
--- 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
--
2.7.4
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