linux/drivers/ufs/core/ufs_bsg.c

// SPDX-License-Identifier: GPL-2.0
/*
 * bsg endpoint that supports UPIUs
 *
 * Copyright (C) 2018 Western Digital Corporation
 */

#include <linux/bsg-lib.h>
#include <linux/dma-mapping.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include "ufs_bsg.h"
#include <ufs/ufshcd.h>
#include "ufshcd-priv.h"

static int ufs_bsg_get_query_desc_size(struct ufs_hba *hba, int *desc_len,
				       struct utp_upiu_query *qr)
{ … }

static int ufs_bsg_alloc_desc_buffer(struct ufs_hba *hba, struct bsg_job *job,
				     uint8_t **desc_buff, int *desc_len,
				     enum query_opcode desc_op)
{ … }

static int ufs_bsg_exec_advanced_rpmb_req(struct ufs_hba *hba, struct bsg_job *job)
{ … }

static int ufs_bsg_request(struct bsg_job *job)
{ … }

/**
 * ufs_bsg_remove - detach and remove the added ufs-bsg node
 * @hba: per adapter object
 *
 * Should be called when unloading the driver.
 */
void ufs_bsg_remove(struct ufs_hba *hba)
{ … }

static inline void ufs_bsg_node_release(struct device *dev)
{ … }

/**
 * ufs_bsg_probe - Add ufs bsg device node
 * @hba: per adapter object
 *
 * Called during initial loading of the driver, and before scsi_scan_host.
 *
 * Returns: 0 (success).
 */
int ufs_bsg_probe(struct ufs_hba *hba)
{ … }