cpu.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef _SOC_CPU_H_
#define _SOC_CPU_H_
 
#include <device/device.h>
 
/* Latency times in units of 1024ns. */
#define C_STATE_LATENCY_CONTROL_0_LIMIT 0x4e
#define C_STATE_LATENCY_CONTROL_1_LIMIT 0x76
#define C_STATE_LATENCY_CONTROL_2_LIMIT 0x94
#define C_STATE_LATENCY_CONTROL_3_LIMIT 0xfa
#define C_STATE_LATENCY_CONTROL_4_LIMIT 0x14c
#define C_STATE_LATENCY_CONTROL_5_LIMIT 0x3f2
 
/* Power in units of mW */
#define C1_POWER        0x3e8
#define C3_POWER        0x1f4
#define C6_POWER        0x15e
#define C7_POWER        0xc8
#define C8_POWER        0xc8
#define C9_POWER        0xc8
#define C10_POWER       0xc8
 
#define C_STATE_LATENCY_MICRO_SECONDS(limit, base) \
        (((1 << ((base)*5)) * (limit)) / 1000)
#define C_STATE_LATENCY_FROM_LAT_REG(reg) \
        C_STATE_LATENCY_MICRO_SECONDS(C_STATE_LATENCY_CONTROL_ ##reg## _LIMIT, \
                                      (IRTL_1024_NS >> 10))
 
/* CPU identification */
u32 cpu_family_model(void);
u32 cpu_stepping(void);
int cpu_is_ult(void);
 
#endif