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/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef SOC_INTEL_COMMON_BLOCK_CPULIB_H
#define SOC_INTEL_COMMON_BLOCK_CPULIB_H
#include <types.h>
/*
* Set PERF_CTL MSR (0x199) P_Req with
* Turbo Ratio which is the Maximum Ratio.
*/
void cpu_set_max_ratio(void);
/*
* Get the TDP Nominal Ratio from MSR 0x648 Bits 7:0.
*/
u8 cpu_get_tdp_nominal_ratio(void);
/*
* Read PLATFORM_INFO MSR (0xCE).
* Return Value of Bit 34:33 (CONFIG_TDP_LEVELS).
*
* Possible values of Bit 34:33 are -
* 00 : Config TDP not supported
* 01 : One Additional TDP level supported
* 10 : Two Additional TDP level supported
* 11 : Reserved
*/
int cpu_config_tdp_levels(void);
/*
* TURBO_RATIO_LIMIT MSR (0x1AD) Bits 31:0 indicates the
* factory configured values for of 1-core, 2-core, 3-core
* and 4-core turbo ratio limits for all processors.
*
* 7:0 - MAX_TURBO_1_CORE
* 15:8 - MAX_TURBO_2_CORES
* 23:16 - MAX_TURBO_3_CORES
* 31:24 - MAX_TURBO_4_CORES
*
* Set PERF_CTL MSR (0x199) P_Req with that value.
*/
void cpu_set_p_state_to_turbo_ratio(void);
/*
* CONFIG_TDP_NOMINAL MSR (0x648) Bits 7:0 tells Nominal
* TDP level ratio to be used for specific processor (in units
* of 100MHz).
*
* Set PERF_CTL MSR (0x199) P_Req with that value.
*/
void cpu_set_p_state_to_nominal_tdp_ratio(void);
/*
* PLATFORM_INFO MSR (0xCE) Bits 15:8 tells
* MAX_NON_TURBO_LIM_RATIO.
*
* Set PERF_CTL MSR (0x199) P_Req with that value.
*/
void cpu_set_p_state_to_max_non_turbo_ratio(void);
/*
* Set PERF_CTL MSR (0x199) P_Req with the value
* for maximum efficiency. This value is reported in PLATFORM_INFO MSR (0xCE)
* in Bits 47:40 and is extracted with cpu_get_min_ratio().
*/
void cpu_set_p_state_to_min_clock_ratio(void);
/*
* Get the Burst/Turbo Mode State from MSR IA32_MISC_ENABLE 0x1A0
* Bit 38 - TURBO_MODE_DISABLE Bit to get state ENABLED / DISABLED.
* Also check for the cpuid 0x6 to check whether Burst mode unsupported.
* Below are the possible cpu_get_burst_mode_state() return values-
* These states are exposed to the User since user
* need to know which is the current Burst Mode State.
*/
enum {
BURST_MODE_UNKNOWN,
BURST_MODE_UNAVAILABLE,
BURST_MODE_DISABLED,
BURST_MODE_ENABLED
};
int cpu_get_burst_mode_state(void);
/*
* Program CPU Burst mode
* true = Enable Burst mode.
* false = Disable Burst mode.
*/
void cpu_burst_mode(bool burst_mode_status);
/*
* Program Enhanced Intel Speed Step Technology
* true = Enable EIST.
* false = Disable EIST.
*/
void cpu_set_eist(bool eist_status);
/*
* Set Bit 6 (ENABLE_IA_UNTRUSTED_MODE) of MSR 0x120
* UCODE_PCR_POWER_MISC MSR to enter IA Untrusted Mode.
*/
void cpu_enable_untrusted_mode(void *unused);
/*
* This function fills in the number of Cores(physical) and Threads(virtual)
* of the CPU in the function arguments. It also returns if the number of cores
* and number of threads are equal.
*/
int cpu_read_topology(unsigned int *num_phys, unsigned int *num_virt);
/*
* cpu_get_bus_clock returns the bus clock frequency in KHz.
* This is the value the clock ratio is multiplied with.
*/
uint32_t cpu_get_bus_clock(void);
/*
* cpu_get_coord_type returns coordination type (SW_ANY or SW_ALL or HW_ALL)
* which is used to populate _PSD object.
*/
int cpu_get_coord_type(void);
/*
* cpu_get_min_ratio returns the minimum frequency ratio that is supported
* by this processor
*/
uint32_t cpu_get_min_ratio(void);
/*
* cpu_get_max_ratio returns the nominal TDP ratio if available or the
* maximum non turbo frequency ratio for this processor
*/
uint32_t cpu_get_max_ratio(void);
/*
* cpu_get_power_max calculates CPU TDP in mW
*/
uint32_t cpu_get_power_max(void);
/*
* cpu_get_max_turbo_ratio returns the maximum turbo ratio limit for the
* processor
*/
uint32_t cpu_get_max_turbo_ratio(void);
/* Configure Machine Check Architecture support */
void mca_configure(void);
/* Lock chipset memory registers to protect SMM */
void cpu_lt_lock_memory(void *unused);
/* Get the a supported PRMRR size in bytes with respect users choice */
int get_prmrr_size(void);
#endif /* SOC_INTEL_COMMON_BLOCK_CPULIB_H */
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