diff options
Diffstat (limited to 'include/acpi/cppc_acpi.h')
| -rw-r--r-- | include/acpi/cppc_acpi.h | 166 |
1 files changed, 152 insertions, 14 deletions
diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 2010c0516f27..13fa81504844 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -1,38 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * CPPC (Collaborative Processor Performance Control) methods used * by CPUfreq drivers. * * (C) Copyright 2014, 2015 Linaro Ltd. * Author: Ashwin Chaugule <ashwin.chaugule@linaro.org> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; version 2 - * of the License. */ #ifndef _CPPC_ACPI_H #define _CPPC_ACPI_H #include <linux/acpi.h> +#include <linux/cpufreq.h> #include <linux/types.h> #include <acpi/pcc.h> #include <acpi/processor.h> -/* Only support CPPCv2 for now. */ -#define CPPC_NUM_ENT 21 -#define CPPC_REV 2 +/* CPPCv2 and CPPCv3 support */ +#define CPPC_V2_REV 2 +#define CPPC_V3_REV 3 +#define CPPC_V2_NUM_ENT 21 +#define CPPC_V3_NUM_ENT 23 #define PCC_CMD_COMPLETE_MASK (1 << 0) #define PCC_ERROR_MASK (1 << 2) -#define MAX_CPC_REG_ENT 19 +#define MAX_CPC_REG_ENT 21 /* CPPC specific PCC commands. */ #define CMD_READ 0 #define CMD_WRITE 1 +#define CPPC_AUTO_ACT_WINDOW_SIG_BIT_SIZE (7) +#define CPPC_AUTO_ACT_WINDOW_EXP_BIT_SIZE (3) +#define CPPC_AUTO_ACT_WINDOW_MAX_SIG ((1 << CPPC_AUTO_ACT_WINDOW_SIG_BIT_SIZE) - 1) +#define CPPC_AUTO_ACT_WINDOW_MAX_EXP ((1 << CPPC_AUTO_ACT_WINDOW_EXP_BIT_SIZE) - 1) +/* CPPC_AUTO_ACT_WINDOW_MAX_SIG is 127, so 128 and 129 will decay to 127 when writing */ +#define CPPC_AUTO_ACT_WINDOW_SIG_CARRY_THRESH 129 + +#define CPPC_ENERGY_PERF_MAX (0xFF) + /* Each register has the folowing format. */ struct cpc_reg { u8 descriptor; @@ -41,7 +49,7 @@ struct cpc_reg { u8 bit_width; u8 bit_offset; u8 access_width; - u64 __iomem address; + u64 address; } __packed; /* @@ -65,6 +73,8 @@ struct cpc_desc { int cpu_id; int write_cmd_status; int write_cmd_id; + /* Lock used for RMW operations in cpc_write() */ + raw_spinlock_t rmw_lock; struct cpc_register_resource cpc_regs[MAX_CPC_REG_ENT]; struct acpi_psd_package domain_info; struct kobject kobj; @@ -91,6 +101,8 @@ enum cppc_regs { AUTO_ACT_WINDOW, ENERGY_PERF, REFERENCE_PERF, + LOWEST_FREQ, + NOMINAL_FREQ, }; /* @@ -100,16 +112,22 @@ enum cppc_regs { * today. */ struct cppc_perf_caps { + u32 guaranteed_perf; u32 highest_perf; u32 nominal_perf; u32 lowest_perf; u32 lowest_nonlinear_perf; + u32 lowest_freq; + u32 nominal_freq; + u32 energy_perf; + bool auto_sel; }; struct cppc_perf_ctrls { u32 max_perf; u32 min_perf; u32 desired_perf; + u32 energy_perf; }; struct cppc_perf_fb_ctrs { @@ -121,19 +139,139 @@ struct cppc_perf_fb_ctrs { /* Per CPU container for runtime CPPC management. */ struct cppc_cpudata { - int cpu; struct cppc_perf_caps perf_caps; struct cppc_perf_ctrls perf_ctrls; struct cppc_perf_fb_ctrs perf_fb_ctrs; - struct cpufreq_policy *cur_policy; unsigned int shared_type; cpumask_var_t shared_cpu_map; }; +#ifdef CONFIG_ACPI_CPPC_LIB +extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf); +extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf); +extern int cppc_get_highest_perf(int cpunum, u64 *highest_perf); extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs); extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls); +extern int cppc_set_enable(int cpu, bool enable); extern int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps); -extern int acpi_get_psd_map(struct cppc_cpudata **); -extern unsigned int cppc_get_transition_latency(int cpu); +extern bool cppc_perf_ctrs_in_pcc(void); +extern unsigned int cppc_perf_to_khz(struct cppc_perf_caps *caps, unsigned int perf); +extern unsigned int cppc_khz_to_perf(struct cppc_perf_caps *caps, unsigned int freq); +extern bool acpi_cpc_valid(void); +extern bool cppc_allow_fast_switch(void); +extern int acpi_get_psd_map(unsigned int cpu, struct cppc_cpudata *cpu_data); +extern int cppc_get_transition_latency(int cpu); +extern bool cpc_ffh_supported(void); +extern bool cpc_supported_by_cpu(void); +extern int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val); +extern int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val); +extern int cppc_get_epp_perf(int cpunum, u64 *epp_perf); +extern int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool enable); +extern int cppc_set_epp(int cpu, u64 epp_val); +extern int cppc_get_auto_act_window(int cpu, u64 *auto_act_window); +extern int cppc_set_auto_act_window(int cpu, u64 auto_act_window); +extern int cppc_get_auto_sel(int cpu, bool *enable); +extern int cppc_set_auto_sel(int cpu, bool enable); +extern int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf); +extern int amd_get_boost_ratio_numerator(unsigned int cpu, u64 *numerator); +extern int amd_detect_prefcore(bool *detected); +#else /* !CONFIG_ACPI_CPPC_LIB */ +static inline int cppc_get_desired_perf(int cpunum, u64 *desired_perf) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_enable(int cpu, bool enable) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_perf_caps(int cpu, struct cppc_perf_caps *caps) +{ + return -EOPNOTSUPP; +} +static inline bool cppc_perf_ctrs_in_pcc(void) +{ + return false; +} +static inline bool acpi_cpc_valid(void) +{ + return false; +} +static inline bool cppc_allow_fast_switch(void) +{ + return false; +} +static inline int cppc_get_transition_latency(int cpu) +{ + return -ENODATA; +} +static inline bool cpc_ffh_supported(void) +{ + return false; +} +static inline int cpc_read_ffh(int cpunum, struct cpc_reg *reg, u64 *val) +{ + return -EOPNOTSUPP; +} +static inline int cpc_write_ffh(int cpunum, struct cpc_reg *reg, u64 val) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool enable) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_epp_perf(int cpunum, u64 *epp_perf) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_epp(int cpu, u64 epp_val) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_auto_act_window(int cpu, u64 *auto_act_window) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_auto_act_window(int cpu, u64 auto_act_window) +{ + return -EOPNOTSUPP; +} +static inline int cppc_get_auto_sel(int cpu, bool *enable) +{ + return -EOPNOTSUPP; +} +static inline int cppc_set_auto_sel(int cpu, bool enable) +{ + return -EOPNOTSUPP; +} +static inline int amd_get_highest_perf(unsigned int cpu, u32 *highest_perf) +{ + return -ENODEV; +} +static inline int amd_get_boost_ratio_numerator(unsigned int cpu, u64 *numerator) +{ + return -EOPNOTSUPP; +} +static inline int amd_detect_prefcore(bool *detected) +{ + return -ENODEV; +} +#endif /* !CONFIG_ACPI_CPPC_LIB */ #endif /* _CPPC_ACPI_H*/ |