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1/*2 * Copyright 2023 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 */23#include "amdgpu.h"24#include "smuio_v14_0_2.h"25#include "smuio/smuio_14_0_2_offset.h"26#include "smuio/smuio_14_0_2_sh_mask.h"27#include <linux/preempt.h>28 29static u32 smuio_v14_0_2_get_rom_index_offset(struct amdgpu_device *adev)30{31 return SOC15_REG_OFFSET(SMUIO, 0, regROM_INDEX);32}33 34static u32 smuio_v14_0_2_get_rom_data_offset(struct amdgpu_device *adev)35{36 return SOC15_REG_OFFSET(SMUIO, 0, regROM_DATA);37}38 39static u64 smuio_v14_0_2_get_gpu_clock_counter(struct amdgpu_device *adev)40{41 u64 clock;42 u64 clock_counter_lo, clock_counter_hi_pre, clock_counter_hi_after;43 44 preempt_disable();45 clock_counter_hi_pre = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);46 clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);47 /* the clock counter may be udpated during polling the counters */48 clock_counter_hi_after = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_UPPER);49 if (clock_counter_hi_pre != clock_counter_hi_after)50 clock_counter_lo = (u64)RREG32_SOC15(SMUIO, 0, regGOLDEN_TSC_COUNT_LOWER);51 preempt_enable();52 53 clock = clock_counter_lo | (clock_counter_hi_after << 32ULL);54 55 return clock;56}57 58const struct amdgpu_smuio_funcs smuio_v14_0_2_funcs = {59 .get_rom_index_offset = smuio_v14_0_2_get_rom_index_offset,60 .get_rom_data_offset = smuio_v14_0_2_get_rom_data_offset,61 .get_gpu_clock_counter = smuio_v14_0_2_get_gpu_clock_counter,62};63