/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ACPI_ACPI_THERMAL_H
#define __ACPI_ACPI_THERMAL_H

#include <asm/ioctl.h>

#define ACPI_THERMAL_MAGIC 's'

#define ACPI_THERMAL_GET_TRT_LEN _IOR(ACPI_THERMAL_MAGIC, 1, unsigned long)
#define ACPI_THERMAL_GET_ART_LEN _IOR(ACPI_THERMAL_MAGIC, 2, unsigned long)
#define ACPI_THERMAL_GET_TRT_COUNT _IOR(ACPI_THERMAL_MAGIC, 3, unsigned long)
#define ACPI_THERMAL_GET_ART_COUNT _IOR(ACPI_THERMAL_MAGIC, 4, unsigned long)

#define ACPI_THERMAL_GET_TRT    _IOR(ACPI_THERMAL_MAGIC, 5, unsigned long)
#define ACPI_THERMAL_GET_ART    _IOR(ACPI_THERMAL_MAGIC, 6, unsigned long)

/*
 * ACPI_THERMAL_GET_PSVT_COUNT = Number of PSVT entries
 * ACPI_THERMAL_GET_PSVT_LEN = Total return data size (PSVT count x each
 * PSVT entry size)
 * ACPI_THERMAL_GET_PSVT = Get the data as an array of psvt_objects
 */
#define ACPI_THERMAL_GET_PSVT_LEN _IOR(ACPI_THERMAL_MAGIC, 7, unsigned long)
#define ACPI_THERMAL_GET_PSVT_COUNT _IOR(ACPI_THERMAL_MAGIC, 8, unsigned long)
#define ACPI_THERMAL_GET_PSVT   _IOR(ACPI_THERMAL_MAGIC, 9, unsigned long)

struct art {
        acpi_handle source;
        acpi_handle target;
        struct_group(data,
                u64 weight;
                u64 ac0_max;
                u64 ac1_max;
                u64 ac2_max;
                u64 ac3_max;
                u64 ac4_max;
                u64 ac5_max;
                u64 ac6_max;
                u64 ac7_max;
                u64 ac8_max;
                u64 ac9_max;
        );
} __packed;

struct trt {
        acpi_handle source;
        acpi_handle target;
        u64 influence;
        u64 sample_period;
        u64 reserved1;
        u64 reserved2;
        u64 reserved3;
        u64 reserved4;
} __packed;

#define ACPI_NR_PSVT_ELEMENTS   12
#define ACPI_PSVT_CONTROL_KNOB  7
#define ACPI_LIMIT_STR_MAX_LEN  8

struct psvt {
        acpi_handle source;
        acpi_handle target;
        u64 priority;
        u64 sample_period;
        u64 passive_temp;
        u64 source_domain;
        u64 control_knob;
        union {
                /* For limit_type = ACPI_TYPE_INTEGER */
                u64 integer;
                /* For limit_type = ACPI_TYPE_STRING */
                char string[ACPI_LIMIT_STR_MAX_LEN];
                char *str_ptr;
        } limit;
        u64 step_size;
        u64 limit_coeff;
        u64 unlimit_coeff;
        /* Spec calls this field reserved, so we borrow it for type info */
        u64 control_knob_type; /* ACPI_TYPE_STRING or ACPI_TYPE_INTEGER */
} __packed;

#define ACPI_NR_ART_ELEMENTS 13
/* for usrspace */
union art_object {
        struct {
                char source_device[8]; /* ACPI single name */
                char target_device[8]; /* ACPI single name */
                struct_group(data,
                        u64 weight;
                        u64 ac0_max_level;
                        u64 ac1_max_level;
                        u64 ac2_max_level;
                        u64 ac3_max_level;
                        u64 ac4_max_level;
                        u64 ac5_max_level;
                        u64 ac6_max_level;
                        u64 ac7_max_level;
                        u64 ac8_max_level;
                        u64 ac9_max_level;
                );
        };
        u64 __data[ACPI_NR_ART_ELEMENTS];
};

union trt_object {
        struct {
                char source_device[8]; /* ACPI single name */
                char target_device[8]; /* ACPI single name */
                u64 influence;
                u64 sample_period;
                u64 reserved[4];
        };
        u64 __data[8];
};

union psvt_object {
        struct {
                char source_device[8];
                char target_device[8];
                u64 priority;
                u64 sample_period;
                u64 passive_temp;
                u64 source_domain;
                u64 control_knob;
                union {
                        u64 integer;
                        char string[ACPI_LIMIT_STR_MAX_LEN];
                } limit;
                u64 step_size;
                u64 limit_coeff;
                u64 unlimit_coeff;
                u64 control_knob_type;
        };
        u64 __data[ACPI_NR_PSVT_ELEMENTS];
};

#ifdef __KERNEL__
int acpi_thermal_rel_misc_device_add(acpi_handle handle);
int acpi_thermal_rel_misc_device_remove(acpi_handle handle);
int acpi_parse_art(acpi_handle handle, int *art_count, struct art **arts,
                bool create_dev);
int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trts,
                bool create_dev);
#endif

#endif /* __ACPI_ACPI_THERMAL_H */