linux/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c

// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2015 - 2021 Intel Corporation */
#include <linux/bitfield.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include "adf_accel_devices.h"
#include "adf_common_drv.h"
#include "adf_pfvf_msg.h"
#include "adf_pfvf_pf_msg.h"
#include "adf_pfvf_pf_proto.h"
#include "adf_pfvf_utils.h"

pf2vf_blkmsg_data_getter_fn;

static const adf_pf2vf_blkmsg_provider pf2vf_blkmsg_providers[] = …;

/**
 * adf_send_pf2vf_msg() - send PF to VF message
 * @accel_dev:	Pointer to acceleration device
 * @vf_nr:	VF number to which the message will be sent
 * @msg:	Message to send
 *
 * This function allows the PF to send a message to a specific VF.
 *
 * Return: 0 on success, error code otherwise.
 */
int adf_send_pf2vf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr, struct pfvf_message msg)
{ … }

/**
 * adf_recv_vf2pf_msg() - receive a VF to PF message
 * @accel_dev:	Pointer to acceleration device
 * @vf_nr:	Number of the VF from where the message will be received
 *
 * This function allows the PF to receive a message from a specific VF.
 *
 * Return: a valid message on success, zero otherwise.
 */
static struct pfvf_message adf_recv_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr)
{ … }

static adf_pf2vf_blkmsg_provider get_blkmsg_response_provider(u8 type)
{ … }

/* Byte pf2vf_blkmsg_data_getter_fn callback */
static u8 adf_pf2vf_blkmsg_get_byte(u8 const *blkmsg, u8 index)
{ … }

/* CRC pf2vf_blkmsg_data_getter_fn callback */
static u8 adf_pf2vf_blkmsg_get_crc(u8 const *blkmsg, u8 count)
{ … }

static int adf_pf2vf_blkmsg_get_data(struct adf_accel_vf_info *vf_info,
				     u8 type, u8 byte, u8 max_size, u8 *data,
				     pf2vf_blkmsg_data_getter_fn data_getter)
{ … }

static struct pfvf_message handle_blkmsg_req(struct adf_accel_vf_info *vf_info,
					     struct pfvf_message req)
{ … }

static struct pfvf_message handle_rp_reset_req(struct adf_accel_dev *accel_dev, u8 vf_nr,
					       struct pfvf_message req)
{ … }

static int adf_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u8 vf_nr,
				struct pfvf_message msg, struct pfvf_message *resp)
{ … }

bool adf_recv_and_handle_vf2pf_msg(struct adf_accel_dev *accel_dev, u32 vf_nr)
{ … }

/**
 * adf_enable_pf2vf_comms() - Function enables communication from pf to vf
 *
 * @accel_dev: Pointer to acceleration device virtual function.
 *
 * This function carries out the necessary steps to setup and start the PFVF
 * communication channel, if any.
 *
 * Return: 0 on success, error code otherwise.
 */
int adf_enable_pf2vf_comms(struct adf_accel_dev *accel_dev)
{ … }
EXPORT_SYMBOL_GPL(…);