From a851b2bd363220feacbf36adb49616a49edc99fb Mon Sep 17 00:00:00 2001 From: Avri Altman Date: Sun, 7 Oct 2018 17:30:34 +0300 Subject: scsi: uapi: ufs: Make utp_upiu_req visible to user space in preparation to send UPIU requests via bsg. Signed-off-by: Avri Altman Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- include/uapi/scsi/scsi_bsg_ufs.h | 74 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 include/uapi/scsi/scsi_bsg_ufs.h (limited to 'include/uapi/scsi') diff --git a/include/uapi/scsi/scsi_bsg_ufs.h b/include/uapi/scsi/scsi_bsg_ufs.h new file mode 100644 index 000000000000..5e0b9d917b9b --- /dev/null +++ b/include/uapi/scsi/scsi_bsg_ufs.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * UFS Transport SGIO v4 BSG Message Support + * + * Copyright (C) 2011-2013 Samsung India Software Operations + */ +#ifndef SCSI_BSG_UFS_H +#define SCSI_BSG_UFS_H + +/* + * This file intended to be included by both kernel and user space + */ + +#define UFS_CDB_SIZE 16 + +/** + * struct utp_upiu_header - UPIU header structure + * @dword_0: UPIU header DW-0 + * @dword_1: UPIU header DW-1 + * @dword_2: UPIU header DW-2 + */ +struct utp_upiu_header { + __be32 dword_0; + __be32 dword_1; + __be32 dword_2; +}; + +/** + * struct utp_upiu_query - upiu request buffer structure for + * query request. + * @opcode: command to perform B-0 + * @idn: a value that indicates the particular type of data B-1 + * @index: Index to further identify data B-2 + * @selector: Index to further identify data B-3 + * @reserved_osf: spec reserved field B-4,5 + * @length: number of descriptor bytes to read/write B-6,7 + * @value: Attribute value to be written DW-5 + * @reserved: spec reserved DW-6,7 + */ +struct utp_upiu_query { + __u8 opcode; + __u8 idn; + __u8 index; + __u8 selector; + __be16 reserved_osf; + __be16 length; + __be32 value; + __be32 reserved[2]; +}; + +/** + * struct utp_upiu_cmd - Command UPIU structure + * @data_transfer_len: Data Transfer Length DW-3 + * @cdb: Command Descriptor Block CDB DW-4 to DW-7 + */ +struct utp_upiu_cmd { + __be32 exp_data_transfer_len; + u8 cdb[UFS_CDB_SIZE]; +}; + +/** + * struct utp_upiu_req - general upiu request structure + * @header:UPIU header structure DW-0 to DW-2 + * @sc: fields structure for scsi command DW-3 to DW-7 + * @qr: fields structure for query request DW-3 to DW-7 + */ +struct utp_upiu_req { + struct utp_upiu_header header; + union { + struct utp_upiu_cmd sc; + struct utp_upiu_query qr; + }; +}; +#endif /* UFS_BSG_H */ -- cgit v1.2.3-55-g7522