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From 0690f9c20ec6f732f6f19249bcaef94c12e3b55a Mon Sep 17 00:00:00 2001
From: Eric Huang <JinHuiEric.Huang@amd.com>
Date: Tue, 10 Nov 2015 11:27:39 -0500
Subject: [PATCH 0092/1110] drm/amd/amdgpu: add gmc clock gating support for
Fiji.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 172 ++++++++++++++++++++++++++++++++++
1 file changed, 172 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 3d4a923..2fcfa97 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1307,9 +1307,181 @@ static int gmc_v8_0_process_interrupt(struct amdgpu_device *adev,
return 0;
}
+static void fiji_update_mc_medium_grain_clock_gating(struct amdgpu_device *adev,
+ bool enable)
+{
+ uint32_t data;
+
+ if (enable) {
+ data = RREG32(mmMC_HUB_MISC_HUB_CG);
+ data |= MC_HUB_MISC_HUB_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_HUB_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_SIP_CG);
+ data |= MC_HUB_MISC_SIP_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_SIP_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_VM_CG);
+ data |= MC_HUB_MISC_VM_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_VM_CG, data);
+
+ data = RREG32(mmMC_XPB_CLK_GAT);
+ data |= MC_XPB_CLK_GAT__ENABLE_MASK;
+ WREG32(mmMC_XPB_CLK_GAT, data);
+
+ data = RREG32(mmATC_MISC_CG);
+ data |= ATC_MISC_CG__ENABLE_MASK;
+ WREG32(mmATC_MISC_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_WR_CG);
+ data |= MC_CITF_MISC_WR_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_WR_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_RD_CG);
+ data |= MC_CITF_MISC_RD_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_RD_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_VM_CG);
+ data |= MC_CITF_MISC_VM_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_VM_CG, data);
+
+ data = RREG32(mmVM_L2_CG);
+ data |= VM_L2_CG__ENABLE_MASK;
+ WREG32(mmVM_L2_CG, data);
+ } else {
+ data = RREG32(mmMC_HUB_MISC_HUB_CG);
+ data &= ~MC_HUB_MISC_HUB_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_HUB_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_SIP_CG);
+ data &= ~MC_HUB_MISC_SIP_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_SIP_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_VM_CG);
+ data &= ~MC_HUB_MISC_VM_CG__ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_VM_CG, data);
+
+ data = RREG32(mmMC_XPB_CLK_GAT);
+ data &= ~MC_XPB_CLK_GAT__ENABLE_MASK;
+ WREG32(mmMC_XPB_CLK_GAT, data);
+
+ data = RREG32(mmATC_MISC_CG);
+ data &= ~ATC_MISC_CG__ENABLE_MASK;
+ WREG32(mmATC_MISC_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_WR_CG);
+ data &= ~MC_CITF_MISC_WR_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_WR_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_RD_CG);
+ data &= ~MC_CITF_MISC_RD_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_RD_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_VM_CG);
+ data &= ~MC_CITF_MISC_VM_CG__ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_VM_CG, data);
+
+ data = RREG32(mmVM_L2_CG);
+ data &= ~VM_L2_CG__ENABLE_MASK;
+ WREG32(mmVM_L2_CG, data);
+ }
+}
+
+static void fiji_update_mc_light_sleep(struct amdgpu_device *adev,
+ bool enable)
+{
+ uint32_t data;
+
+ if (enable) {
+ data = RREG32(mmMC_HUB_MISC_HUB_CG);
+ data |= MC_HUB_MISC_HUB_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_HUB_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_SIP_CG);
+ data |= MC_HUB_MISC_SIP_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_SIP_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_VM_CG);
+ data |= MC_HUB_MISC_VM_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_VM_CG, data);
+
+ data = RREG32(mmMC_XPB_CLK_GAT);
+ data |= MC_XPB_CLK_GAT__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_XPB_CLK_GAT, data);
+
+ data = RREG32(mmATC_MISC_CG);
+ data |= ATC_MISC_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmATC_MISC_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_WR_CG);
+ data |= MC_CITF_MISC_WR_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_WR_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_RD_CG);
+ data |= MC_CITF_MISC_RD_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_RD_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_VM_CG);
+ data |= MC_CITF_MISC_VM_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_VM_CG, data);
+
+ data = RREG32(mmVM_L2_CG);
+ data |= VM_L2_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmVM_L2_CG, data);
+ } else {
+ data = RREG32(mmMC_HUB_MISC_HUB_CG);
+ data &= ~MC_HUB_MISC_HUB_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_HUB_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_SIP_CG);
+ data &= ~MC_HUB_MISC_SIP_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_SIP_CG, data);
+
+ data = RREG32(mmMC_HUB_MISC_VM_CG);
+ data &= ~MC_HUB_MISC_VM_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_HUB_MISC_VM_CG, data);
+
+ data = RREG32(mmMC_XPB_CLK_GAT);
+ data &= ~MC_XPB_CLK_GAT__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_XPB_CLK_GAT, data);
+
+ data = RREG32(mmATC_MISC_CG);
+ data &= ~ATC_MISC_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmATC_MISC_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_WR_CG);
+ data &= ~MC_CITF_MISC_WR_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_WR_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_RD_CG);
+ data &= ~MC_CITF_MISC_RD_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_RD_CG, data);
+
+ data = RREG32(mmMC_CITF_MISC_VM_CG);
+ data &= ~MC_CITF_MISC_VM_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmMC_CITF_MISC_VM_CG, data);
+
+ data = RREG32(mmVM_L2_CG);
+ data &= ~VM_L2_CG__MEM_LS_ENABLE_MASK;
+ WREG32(mmVM_L2_CG, data);
+ }
+}
+
static int gmc_v8_0_set_clockgating_state(void *handle,
enum amd_clockgating_state state)
{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+ switch (adev->asic_type) {
+ case CHIP_FIJI:
+ fiji_update_mc_medium_grain_clock_gating(adev,
+ state == AMD_CG_STATE_GATE ? true : false);
+ fiji_update_mc_light_sleep(adev,
+ state == AMD_CG_STATE_GATE ? true : false);
+ break;
+ default:
+ break;
+ }
return 0;
}
--
2.7.4
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