122 lines
3.8 KiB
C
122 lines
3.8 KiB
C
/*
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* Copyright 2020 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "amdgpu.h"
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#include "smuio_v13_0.h"
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#include "smuio/smuio_13_0_2_offset.h"
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#include "smuio/smuio_13_0_2_sh_mask.h"
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#define SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK 0x00000001L
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static u32 smuio_v13_0_get_rom_index_offset(struct amdgpu_device *adev)
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{
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return SOC15_REG_OFFSET(SMUIO, 0, regROM_INDEX);
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}
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static u32 smuio_v13_0_get_rom_data_offset(struct amdgpu_device *adev)
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{
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return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA);
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}
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static void smuio_v13_0_update_rom_clock_gating(struct amdgpu_device *adev, bool enable)
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{
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u32 def, data;
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/* enable/disable ROM CG is not supported on APU */
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if (adev->flags & AMD_IS_APU)
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return;
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def = data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0);
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if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ROM_MGCG))
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data &= ~(CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
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CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK);
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else
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data |= CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK |
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CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE1_MASK;
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if (def != data)
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WREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0, data);
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}
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static void smuio_v13_0_get_clock_gating_state(struct amdgpu_device *adev, u32 *flags)
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{
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u32 data;
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/* CGTT_ROM_CLK_CTRL0 is not available for APU */
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if (adev->flags & AMD_IS_APU)
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return;
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data = RREG32_SOC15(SMUIO, 0, regCGTT_ROM_CLK_CTRL0);
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if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
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*flags |= AMD_CG_SUPPORT_ROM_MGCG;
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}
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/**
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* smuio_v13_0_get_die_id - query die id from FCH.
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*
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* @adev: amdgpu device pointer
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*
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* Returns die id
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*/
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static u32 smuio_v13_0_get_die_id(struct amdgpu_device *adev)
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{
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u32 data, die_id;
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data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
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die_id = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, DIE_ID);
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return die_id;
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}
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/**
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* smuio_v13_0_supports_host_gpu_xgmi - detect xgmi interface between cpu and gpu/s.
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*
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* @adev: amdgpu device pointer
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*
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* Returns true on success or false otherwise.
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*/
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static bool smuio_v13_0_is_host_gpu_xgmi_supported(struct amdgpu_device *adev)
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{
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u32 data;
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data = RREG32_SOC15(SMUIO, 0, regSMUIO_MCM_CONFIG);
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data = REG_GET_FIELD(data, SMUIO_MCM_CONFIG, TOPOLOGY_ID);
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/* data[4:0]
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* bit 0 == 0 host-gpu interface is PCIE
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* bit 0 == 1 host-gpu interface is Alternate Protocal
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* for AMD, this is XGMI
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*/
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data &= SMUIO_MCM_CONFIG__HOST_GPU_XGMI_MASK;
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return data ? true : false;
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}
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const struct amdgpu_smuio_funcs smuio_v13_0_funcs = {
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.get_rom_index_offset = smuio_v13_0_get_rom_index_offset,
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.get_rom_data_offset = smuio_v13_0_get_rom_data_offset,
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.get_die_id = smuio_v13_0_get_die_id,
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.is_host_gpu_xgmi_supported = smuio_v13_0_is_host_gpu_xgmi_supported,
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.update_rom_clock_gating = smuio_v13_0_update_rom_clock_gating,
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.get_clock_gating_state = smuio_v13_0_get_clock_gating_state,
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};
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