linux/drivers/powercap/intel_rapl_tpmi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * intel_rapl_tpmi: Intel RAPL driver via TPMI interface
 *
 * Copyright (c) 2023, Intel Corporation.
 * All Rights Reserved.
 *
 */
#define pr_fmt(fmt) …

#include <linux/auxiliary_bus.h>
#include <linux/io.h>
#include <linux/intel_tpmi.h>
#include <linux/intel_rapl.h>
#include <linux/module.h>
#include <linux/slab.h>

#define TPMI_RAPL_VERSION …

/* 1 header + 10 registers + 5 reserved. 8 bytes for each. */
#define TPMI_RAPL_DOMAIN_SIZE …

enum tpmi_rapl_domain_type { … };

enum tpmi_rapl_register { … };

struct tpmi_rapl_package { … };

static LIST_HEAD(tpmi_rapl_packages);
static DEFINE_MUTEX(tpmi_rapl_lock);

static struct powercap_control_type *tpmi_control_type;

static int tpmi_rapl_read_raw(int id, struct reg_action *ra)
{ … }

static int tpmi_rapl_write_raw(int id, struct reg_action *ra)
{ … }

static struct tpmi_rapl_package *trp_alloc(int pkg_id)
{ … }

static void trp_release(struct tpmi_rapl_package *trp)
{ … }

/*
 * Bit 0 of TPMI_RAPL_REG_DOMAIN_INFO indicates if the current package is a domain
 * root or not. Only domain root packages can enumerate System (Psys) Domain.
 */
#define TPMI_RAPL_DOMAIN_ROOT …

static int parse_one_domain(struct tpmi_rapl_package *trp, u32 offset)
{ … }

static int intel_rapl_tpmi_probe(struct auxiliary_device *auxdev,
				 const struct auxiliary_device_id *id)
{ … }

static void intel_rapl_tpmi_remove(struct auxiliary_device *auxdev)
{ … }

static const struct auxiliary_device_id intel_rapl_tpmi_ids[] = …;

MODULE_DEVICE_TABLE(auxiliary, intel_rapl_tpmi_ids);

static struct auxiliary_driver intel_rapl_tpmi_driver = …;

module_auxiliary_driver(…) …

MODULE_IMPORT_NS(…);

MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;