linux/drivers/crypto/ccp/dbc.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * AMD Secure Processor Dynamic Boost Control interface
 *
 * Copyright (C) 2023 Advanced Micro Devices, Inc.
 *
 * Author: Mario Limonciello <[email protected]>
 */

#include "dbc.h"

#define DBC_DEFAULT_TIMEOUT …
struct error_map { … };

#define DBC_ERROR_ACCESS_DENIED …
#define DBC_ERROR_EXCESS_DATA …
#define DBC_ERROR_BAD_PARAMETERS …
#define DBC_ERROR_BAD_STATE …
#define DBC_ERROR_NOT_IMPLEMENTED …
#define DBC_ERROR_BUSY …
#define DBC_ERROR_MESSAGE_FAILURE …
#define DBC_ERROR_OVERFLOW …
#define DBC_ERROR_SIGNATURE_INVALID …

static struct error_map error_codes[] = …;

static inline int send_dbc_cmd_thru_ext(struct psp_dbc_device *dbc_dev, int msg)
{ … }

static inline int send_dbc_cmd_thru_pa(struct psp_dbc_device *dbc_dev, int msg)
{ … }

static int send_dbc_cmd(struct psp_dbc_device *dbc_dev, int msg)
{ … }

static int send_dbc_nonce(struct psp_dbc_device *dbc_dev)
{ … }

static int send_dbc_parameter(struct psp_dbc_device *dbc_dev)
{ … }

void dbc_dev_destroy(struct psp_device *psp)
{ … }

static long dbc_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{ … }

static const struct file_operations dbc_fops = …;

int dbc_dev_init(struct psp_device *psp)
{ … }