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Index of /anon_sym/anon/proc/690/attr
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/*
* Universal Flash Storage Host controller driver
* Copyright (C) 2011-2013 Samsung India Software Operations
*
* Authors:
* Santosh Yaraganavi
* Vinayak Holikatti
*/
#ifndef _UFS_H
#define _UFS_H
#include
#include
#include
#include
/*
* Using static_assert() is not allowed in UAPI header files. Hence the check
* in this header file of the size of struct utp_upiu_header.
*/
static_assert(sizeof(struct utp_upiu_header) == 12);
#define GENERAL_UPIU_REQUEST_SIZE (sizeof(struct utp_upiu_req))
#define QUERY_DESC_MAX_SIZE 255
#define QUERY_DESC_MIN_SIZE 2
#define QUERY_DESC_HDR_SIZE 2
#define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
(sizeof(struct utp_upiu_header)))
#define UFS_SENSE_SIZE 18
/*
* UFS device may have standard LUs and LUN id could be from 0x00 to
* 0x7F. Standard LUs use "Peripheral Device Addressing Format".
* UFS device may also have the Well Known LUs (also referred as W-LU)
* which again could be from 0x00 to 0x7F. For W-LUs, device only use
* the "Extended Addressing Format" which means the W-LUNs would be
* from 0xc100 (SCSI_W_LUN_BASE) onwards.
* This means max. LUN number reported from UFS device could be 0xC17F.
*/
#define UFS_UPIU_MAX_UNIT_NUM_ID 0x7F
#define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
#define UFS_UPIU_WLUN_ID (1 << 7)
/* WriteBooster buffer is available only for the logical unit from 0 to 7 */
#define UFS_UPIU_MAX_WB_LUN_ID 8
/*
* WriteBooster buffer lifetime has a limit setted by vendor.
* If it is over the limit, WriteBooster feature will be disabled.
*/
#define UFS_WB_EXCEED_LIFETIME 0x0B
/*
* In UFS Spec, the Extra Header Segment (EHS) starts from byte 32 in UPIU request/response packet
*/
#define EHS_OFFSET_IN_RESPONSE 32
/* Well known logical unit id in LUN field of UPIU */
enum {
UFS_UPIU_REPORT_LUNS_WLUN = 0x81,
UFS_UPIU_UFS_DEVICE_WLUN = 0xD0,
UFS_UPIU_BOOT_WLUN = 0xB0,
UFS_UPIU_RPMB_WLUN = 0xC4,
};
/*
* UFS Protocol Information Unit related definitions
*/
/* Task management functions */
enum {
UFS_ABORT_TASK = 0x01,
UFS_ABORT_