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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Emulation of enough SCSI commands to find and read from a unit
*
* Copyright 2022 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*
* implementations of SCSI functions required so that CONFIG_SCSI can be enabled
* for sandbox
*/
#ifndef __scsi_emul_h
#define __scsi_emul_h
/**
* struct scsi_emul_info - information for emulating a SCSI device
*
* @vendor: Vendor name
* @product: Product name
* @block_size: Block size of device in bytes (normally 512)
* @file_size: Size of the backing file for this emulator, in bytes
*
* @phase: Current SCSI phase
* @buff_used: Number of bytes ready to transfer back to host
* @read_len: Number of bytes of data left in the current read command
* @alloc_len: Allocation length from the last incoming command
* @transfer_len: Transfer length from CBW header
* @buff: Data buffer for outgoing data
*/
struct scsi_emul_info {
/* provided by the caller: */
void *buff;
const char *vendor;
const char *product;
int block_size;
loff_t file_size;
/* state maintained by the emulator: */
enum scsi_cmd_phase phase;
int buff_used;
int read_len;
int alloc_len;
uint transfer_len;
};
#endif
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