/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Universal Flash Storage Host controller driver
* Copyright (C) 2011-2013 Samsung India Software Operations
* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
*
* Authors:
* Santosh Yaraganavi <santosh.sy@samsung.com>
* Vinayak Holikatti <h.vinayak@samsung.com>
*/
#ifndef _UFSHCD_H
#define _UFSHCD_H
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/workqueue.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/bitops.h>
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <linux/completion.h>
#include <linux/regulator/consumer.h>
#include <linux/bitfield.h>
#include <linux/devfreq.h>
#include <linux/keyslot-manager.h>
#include "unipro.h"
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_dbg.h>
#include <scsi/scsi_eh.h>
#include "ufs.h"
#include "ufs_quirks.h"
#include "ufshci.h"
#define UFSHCD "ufshcd"
#define UFSHCD_DRIVER_VERSION "0.2"
struct ufs_hba;
enum dev_cmd_type {
DEV_CMD_TYPE_NOP = 0x0,
DEV_CMD_TYPE_QUERY = 0x1,
};
/**
* struct uic_command - UIC command structure
* @command: UIC command
* @argument1: UIC command argument 1
* @argument2: UIC command argument 2
* @argument3: UIC command argument 3
* @done: UIC command completion
*/
struct uic_command {
u32 command;
u32 argument1;
u32 argument2;
u32 argument3;
struct completion done;
};
/* Used to differentiate the power management options */
enum ufs_pm_op {
UFS_RUNTIME_PM,
UFS_SYSTEM_PM,
UFS_SHUTDOWN_PM,
};
#define ufshcd_is_runtime_pm(op) ((op) == UFS_RUNTIME_PM)
#define ufshcd_is_system_pm(op) ((op) == UFS_SYSTEM_PM)
#define ufshcd_is_shutdown_pm(op) ((op) == UFS_SHUTDOWN_PM)
/* Host <-> Device UniPro Link state */
enum uic_link_state {
UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */
UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */
UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */
};
#define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
#define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
UIC_LINK_ACTIVE_STATE)
#define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
UIC_LINK_HIBERN8_STATE)
#define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
#define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
UIC_LINK_ACTIVE_STATE)
#define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
UIC_LINK_HIBERN8_STATE)
#define ufshcd_set_ufs_dev_active(h) \
((h)->curr_dev_pwr_mode = UFS_ACTIVE_PWR_MODE)
#define ufshcd_set_ufs_dev_sleep(h) \
((h)->curr_dev_pwr_mode = UFS_SLEEP_PWR_MODE)
#define ufshcd_set_ufs_dev_poweroff(h) \
((h)->curr_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE)
#define ufshcd_is_ufs_dev_active(h) \
((h)->curr_dev_pwr_mode == UFS_ACTIVE_PWR_MODE)
#define ufshcd_is_ufs_dev_sleep(h) \
((h)->curr_dev_pwr_mode == UFS_SLEEP_PWR_MODE)
#define ufshcd_is_ufs_dev_poweroff(h) \
((h)->curr_dev_pwr_mode == UFS_POWERDOWN_PWR_MODE)
/*
* UFS Power management levels.
* Each level is in increasing order of power savings.
*/
enum ufs_pm_level {
UFS_PM_LVL_0, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_ACTIVE_STATE */
UFS_PM_LVL_1, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_HIBERN8_STATE */
UFS_PM_LVL_2, /* UFS_SLEEP_PWR_MODE, UIC_LINK_ACTIVE_STATE */
UFS_PM_LVL_3, /* UFS_SLEEP_PWR_MODE, UIC_LINK_HIBERN8_STATE */
UFS_PM_LVL_4, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_HIBERN8_STATE */
UFS_PM_LVL_5, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_OFF_STATE */
UFS_PM_LVL_MAX
};
struct ufs_pm_lvl_states {
enum ufs_dev_pwr_mode dev_state;
enum uic_link_state link_state;
};
/**
* struct ufshcd_lrb - local reference block
* @utr_descriptor_ptr: UTRD address of the command
* @ucd_req_ptr: UCD address of the command
* @ucd_rsp_ptr: Response UPIU address for this command
* @ucd_prdt_ptr: PRDT address of the command
* @utrd_dma_addr: UTRD dma address for debug
* @ucd_prdt_dma_addr: PRDT dma address for debug
* @ucd_rsp_dma_addr: UPIU response dma address for debug
* @ucd_req_dma_addr: UPIU request dma address for debug
* @cmd: pointer to SCSI command
* @sense_buffer: pointer to sense buffer address of the SCSI command
* @sense_bufflen: Length of the sense buffer
* @scsi_status: SCSI status of the command
* @command_type: SCSI, UFS, Query.
* @task_tag: Task tag of the command
* @lun: LUN of the command
* @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
* @issue_time_stamp: time stamp for debug purposes
* @compl_time_stamp: time stamp for statistics
* @crypto_key_slot: the key slot to use for inline crypto (-1 if none)
* @data_unit_num: the data unit number for the first block for inline crypto
* @req_abort_skip: skip request abort task flag
*/
struct ufshcd_lrb {
struct utp_transfer_req_desc *utr_descriptor_ptr;
struct utp_upiu_req *ucd_req_ptr;
struct utp_upiu_rsp *ucd_rsp_ptr;
struct ufshcd_sg_entry *ucd_prdt_ptr;
dma_addr_t utrd_dma_addr;
dma_addr_t ucd_req_dma_addr;
dma_addr_t ucd_rsp_dma_addr;
dma_addr_t ucd_prdt_dma_addr;
struct scsi_cmnd *cmd;
u8 *sense_buffer;
unsigned