drm/amdgpu/df: implement df v1_7 callback functions

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 112 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/df_v1_7.c b/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
new file mode 100644
index 000000000000..4ffda996660f
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/df_v1_7.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu.h"
+#include "df_v1_7.h"
+
+#include "df/df_1_7_default.h"
+#include "df/df_1_7_offset.h"
+#include "df/df_1_7_sh_mask.h"
+
+static u32 df_v1_7_channel_number[] = {1, 2, 0, 4, 0, 8, 0, 16, 2};
+
+static void df_v1_7_init (struct amdgpu_device *adev)
+{
+}
+
+static void df_v1_7_enable_broadcast_mode(struct amdgpu_device *adev,
+                                          bool enable)
+{
+        u32 tmp;
+
+        if (enable) {
+                tmp = RREG32_SOC15(DF, 0, mmFabricConfigAccessControl);
+                tmp &= ~FabricConfigAccessControl__CfgRegInstAccEn_MASK;
+                WREG32_SOC15(DF, 0, mmFabricConfigAccessControl, tmp);
+        } else
+                WREG32_SOC15(DF, 0, mmFabricConfigAccessControl,
+                             mmFabricConfigAccessControl_DEFAULT);
+}
+
+static u32 df_v1_7_get_fb_channel_number(struct amdgpu_device *adev)
+{
+        u32 tmp;
+
+        tmp = RREG32_SOC15(DF, 0, mmDF_CS_AON0_DramBaseAddress0);
+        tmp &= DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK;
+        tmp >>= DF_CS_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
+
+        return tmp;
+}
+
+static u32 df_v1_7_get_hbm_channel_number(struct amdgpu_device *adev)
+{
+        int fb_channel_number;
+
+        fb_channel_number = adev->df_funcs->get_fb_channel_number(adev);
+
+        return df_v1_7_channel_number[fb_channel_number];
+}
+
+static void df_v1_7_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+                                                     bool enable)
+{
+        u32 tmp;
+
+        /* Put DF on broadcast mode */
+        adev->df_funcs->enable_broadcast_mode(adev, true);
+
+        if (enable && (adev->cg_flags & AMD_CG_SUPPORT_DF_MGCG)) {
+                tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
+                tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+                tmp |= DF_V1_7_MGCG_ENABLE_15_CYCLE_DELAY;
+                WREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+        } else {
+                tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
+                tmp &= ~DF_PIE_AON0_DfGlobalClkGater__MGCGMode_MASK;
+                tmp |= DF_V1_7_MGCG_DISABLE;
+                WREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater, tmp);
+        }
+
+        /* Exit boradcast mode */
+        adev->df_funcs->enable_broadcast_mode(adev, false);
+}
+
+static void df_v1_7_get_clockgating_state(struct amdgpu_device *adev,
+                                          u32 *flags)
+{
+        u32 tmp;
+
+        /* AMD_CG_SUPPORT_DF_MGCG */
+        tmp = RREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater);
+        if (tmp & DF_V1_7_MGCG_ENABLE_15_CYCLE_DELAY)
+                *flags |= AMD_CG_SUPPORT_DF_MGCG;
+}
+
+const struct amdgpu_df_funcs df_v1_7_funcs = {
+        .init = df_v1_7_init,
+        .enable_broadcast_mode = df_v1_7_enable_broadcast_mode,
+        .get_fb_channel_number = df_v1_7_get_fb_channel_number,
+        .get_hbm_channel_number = df_v1_7_get_hbm_channel_number,
+        .update_medium_grain_clock_gating = df_v1_7_update_medium_grain_clock_gating,
+        .get_clockgating_state = df_v1_7_get_clockgating_state,
+};