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Release 4.18 drivers/gpu/drm/amd/amdgpu/df_v3_6.c

/*
 * 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_v3_6.h"

#include "df/df_3_6_default.h"
#include "df/df_3_6_offset.h"
#include "df/df_3_6_sh_mask.h"


static u32 df_v3_6_channel_number[] = {1, 2, 0, 4, 0, 8, 0,
				       16, 32, 0, 0, 0, 2, 4, 8};


static void df_v3_6_init(struct amdgpu_device *adev) { }

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static void df_v3_6_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); }

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static u32 df_v3_6_get_fb_channel_number(struct amdgpu_device *adev) { u32 tmp; tmp = RREG32_SOC15(DF, 0, mmDF_CS_UMC_AON0_DramBaseAddress0); tmp &= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan_MASK; tmp >>= DF_CS_UMC_AON0_DramBaseAddress0__IntLvNumChan__SHIFT; return tmp; }

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static u32 df_v3_6_get_hbm_channel_number(struct amdgpu_device *adev) { int fb_channel_number; fb_channel_number = adev->df_funcs->get_fb_channel_number(adev); if (fb_channel_number >= ARRAY_SIZE(df_v3_6_channel_number)) fb_channel_number = 0; return df_v3_6_channel_number[fb_channel_number]; }

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static void df_v3_6_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_V3_6_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_V3_6_MGCG_DISABLE; WREG32_SOC15(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater, tmp); } /* Exit broadcast mode */ adev->df_funcs->enable_broadcast_mode(adev, false); }

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static void df_v3_6_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_V3_6_MGCG_ENABLE_15_CYCLE_DELAY) *flags |= AMD_CG_SUPPORT_DF_MGCG; }

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const struct amdgpu_df_funcs df_v3_6_funcs = { .init = df_v3_6_init, .enable_broadcast_mode = df_v3_6_enable_broadcast_mode, .get_fb_channel_number = df_v3_6_get_fb_channel_number, .get_hbm_channel_number = df_v3_6_get_hbm_channel_number, .update_medium_grain_clock_gating = df_v3_6_update_medium_grain_clock_gating, .get_clockgating_state = df_v3_6_get_clockgating_state, };

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