include/scsi_emul.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Emulation of enough SCSI commands to find and read from a unit
   4  *
   5  * Copyright 2022 Google LLC
   6  * Written by Simon Glass <sjg@chromium.org>
   7  *
   8  * implementations of SCSI functions required so that CONFIG_SCSI can be enabled
   9  * for sandbox
  10  */
  11
  12 #ifndef __scsi_emul_h
  13 #define __scsi_emul_h
  14
  15 /**
  16  * struct scsi_emul_info - information for emulating a SCSI device
  17  *
  18  * @vendor: Vendor name
  19  * @product: Product name
  20  * @block_size: Block size of device in bytes (normally 512)
  21  *
  22  * @phase: Current SCSI phase
  23  * @buff_used: Number of bytes ready to transfer back to host
  24  * @read_len: Number of bytes of data left in the current read command
  25  * @alloc_len: Allocation length from the last incoming command
  26  * @transfer_len: Transfer length from CBW header
  27  * @buff: Data buffer for outgoing data
  28  */
  29 struct scsi_emul_info {
  30         /* provided by the caller: */
  31         void *buff;
  32         const char *vendor;
  33         const char *product;
  34         int block_size;
  35
  36         /* state maintained by the emulator: */
  37         enum scsi_cmd_phase phase;
  38         int buff_used;
  39         int read_len;
  40         int alloc_len;
  41         uint transfer_len;
  42 };
  43
  44 #endif