| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * linux/include/linux/amd-pstate.h |
| * |
| * Copyright (C) 2022 Advanced Micro Devices, Inc. |
| * |
| * Author: Meng Li <[email protected]> |
| */ |
| |
| #ifndef _LINUX_AMD_PSTATE_H |
| #define _LINUX_AMD_PSTATE_H |
| |
| #include <linux/pm_qos.h> |
| |
| /********************************************************************* |
| * AMD P-state INTERFACE * |
| *********************************************************************/ |
| /** |
| * struct amd_aperf_mperf |
| * @aperf: actual performance frequency clock count |
| * @mperf: maximum performance frequency clock count |
| * @tsc: time stamp counter |
| */ |
| struct amd_aperf_mperf { |
| u64 aperf; |
| u64 mperf; |
| u64 tsc; |
| }; |
| |
| /** |
| * struct amd_cpudata - private CPU data for AMD P-State |
| * @cpu: CPU number |
| * @req: constraint request to apply |
| * @cppc_req_cached: cached performance request hints |
| * @highest_perf: the maximum performance an individual processor may reach, |
| * assuming ideal conditions |
| * @nominal_perf: the maximum sustained performance level of the processor, |
| * assuming ideal operating conditions |
| * @lowest_nonlinear_perf: the lowest performance level at which nonlinear power |
| * savings are achieved |
| * @lowest_perf: the absolute lowest performance level of the processor |
| * @max_freq: the frequency that mapped to highest_perf |
| * @min_freq: the frequency that mapped to lowest_perf |
| * @nominal_freq: the frequency that mapped to nominal_perf |
| * @lowest_nonlinear_freq: the frequency that mapped to lowest_nonlinear_perf |
| * @cur: Difference of Aperf/Mperf/tsc count between last and current sample |
| * @prev: Last Aperf/Mperf/tsc count value read from register |
| * @freq: current cpu frequency value |
| * @boost_supported: check whether the Processor or SBIOS supports boost mode |
| * |
| * The amd_cpudata is key private data for each CPU thread in AMD P-State, and |
| * represents all the attributes and goals that AMD P-State requests at runtime. |
| */ |
| struct amd_cpudata { |
| int cpu; |
| |
| struct freq_qos_request req[2]; |
| u64 cppc_req_cached; |
| |
| u32 highest_perf; |
| u32 nominal_perf; |
| u32 lowest_nonlinear_perf; |
| u32 lowest_perf; |
| |
| u32 max_freq; |
| u32 min_freq; |
| u32 nominal_freq; |
| u32 lowest_nonlinear_freq; |
| |
| struct amd_aperf_mperf cur; |
| struct amd_aperf_mperf prev; |
| |
| u64 freq; |
| bool boost_supported; |
| }; |
| |
| #endif /* _LINUX_AMD_PSTATE_H */ |
