SSL ufshcd.h Sprache: unbekannt
/* 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/bitfield.h>
#include <linux/blk-crypto-profile.h>
#include <linux/blk-mq.h>
#include <linux/devfreq.h>
#include <linux/fault-inject.h>
#include <linux/debugfs.h>
#include <linux/msi.h>
#include <linux/pm_runtime.h>
#include <linux/dma-direction.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <ufs/unipro.h>
#include <ufs/ufs.h>
#include <ufs/ufs_quirks.h>
#include <ufs/ufshci.h>
#define UFSHCD "ufshcd"
struct scsi_device;
struct ufs_hba;
enum dev_cmd_type {
DEV_CMD_TYPE_NOP = 0 x0,
DEV_CMD_TYPE_QUERY = 0 x1,
DEV_CMD_TYPE_RPMB = 0 x2,
};
enum ufs_event_type {
/* uic specific errors */
UFS_EVT_PA_ERR = 0 ,
UFS_EVT_DL_ERR,
UFS_EVT_NL_ERR,
UFS_EVT_TL_ERR,
UFS_EVT_DME_ERR,
/* fatal errors */
UFS_EVT_AUTO_HIBERN8_ERR,
UFS_EVT_FATAL_ERR,
UFS_EVT_LINK_STARTUP_FAIL,
UFS_EVT_RESUME_ERR,
UFS_EVT_SUSPEND_ERR,
UFS_EVT_WL_SUSP_ERR,
UFS_EVT_WL_RES_ERR,
/* abnormal events */
UFS_EVT_DEV_RESET,
UFS_EVT_HOST_RESET,
UFS_EVT_ABORT,
UFS_EVT_CNT,
};
/**
* struct uic_command - UIC command structure
* @ command : UIC command
* @ argument1 : UIC command argument 1
* @ argument2 : UIC command argument 2
* @ argument3 : UIC command argument 3
* @ cmd_active : Indicate if UIC command is outstanding
* @ done : UIC command completion
*/
struct uic_command {
const u32 command;
const u32 argument1;
u32 argument2;
u32 argument3;
int cmd_active;
struct completion done;
};
/* Used to differentiate the power management options */
enum ufs_pm_op {
UFS_RUNTIME_PM,
UFS_SYSTEM_PM,
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 */
UIC_LINK_BROKEN_STATE = 3 , /* Link is in broken 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_is_link_broken(hba) ((hba)->uic_link_state == \
UIC_LINK_BROKEN_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_link_broken(hba) ((hba)->uic_link_state = \
UIC_LINK_BROKEN_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_set_ufs_dev_deepsleep(h) \
((h)->curr_dev_pwr_mode = UFS_DEEPSLEEP_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)
#define ufshcd_is_ufs_dev_deepsleep(h) \
((h)->curr_dev_pwr_mode == UFS_DEEPSLEEP_PWR_MODE)
/*
* UFS Power management levels .
* Each level is in increasing order of power savings , except DeepSleep
* which is lower than PowerDown with power on but not PowerDown with
* power off .
*/
enum ufs_pm_level {
UFS_PM_LVL_0,
UFS_PM_LVL_1,
UFS_PM_LVL_2,
UFS_PM_LVL_3,
UFS_PM_LVL_4,
UFS_PM_LVL_5,
UFS_PM_LVL_6,
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
* @ 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 ( CLOCK_MONOTONIC )
* @ issue_time_stamp_local_clock : time stamp for debug purposes ( local_clock )
* @ compl_time_stamp : time stamp for statistics ( CLOCK_MONOTONIC )
* @ compl_time_stamp_local_clock : time stamp for debug purposes ( local_clock )
* @ 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;
int scsi_status;
int command_type;
int task_tag;
u8 lun; /* UPIU LUN id field is only 8-bit wide */
bool intr_cmd;
ktime_t issue_time_stamp;
u64 issue_time_stamp_local_clock;
ktime_t compl_time_stamp;
u64 compl_time_stamp_local_clock;
#ifdef CONFIG_SCSI_UFS_CRYPTO
int crypto_key_slot;
u64 data_unit_num;
#endif
bool req_abort_skip;
};
/**
* struct ufs_query_req - parameters for building a query request
* @ query_func : UPIU header query function
* @ upiu_req : the query request data
*/
struct ufs_query_req {
u8 query_func;
struct utp_upiu_query upiu_req;
};
/**
* struct ufs_query_resp - UPIU QUERY
* @ response : device response code
* @ upiu_res : query response data
*/
struct ufs_query_res {
struct utp_upiu_query upiu_res;
};
/**
* struct ufs_query - holds relevant data structures for query request
* @ request : request upiu and function
* @ descriptor : buffer for sending / receiving descriptor
* @ response : response upiu and response
*/
struct ufs_query {
struct ufs_query_req request;
u8 *descriptor;
struct ufs_query_res response;
};
/**
* struct ufs_dev_cmd - all assosiated fields with device management commands
* @ type : device management command type - Query , NOP OUT
* @ lock : lock to allow one command at a time
* @ complete : internal commands completion
* @ query : Device management query information
*/
struct ufs_dev_cmd {
enum dev_cmd_type type;
struct mutex lock;
struct completion complete;
struct ufs_query query;
};
/**
* struct ufs_clk_info - UFS clock related info
* @ list : list headed by hba - > clk_list_head
* @ clk : clock node
* @ name : clock name
* @ max_freq : maximum frequency supported by the clock
* @ min_freq : min frequency that can be used for clock scaling
* @ curr_freq : indicates the current frequency that it is set to
* @ keep_link_active : indicates that the clk should not be disabled if
* link is active
* @ enabled : variable to check against multiple enable / disable
*/
struct ufs_clk_info {
struct list_head list;
struct clk *clk;
const char *name;
u32 max_freq;
u32 min_freq;
u32 curr_freq;
bool keep_link_active;
bool enabled;
};
enum ufs_notify_change_status {
PRE_CHANGE,
POST_CHANGE,
};
struct ufs_pa_layer_attr {
u32 gear_rx;
u32 gear_tx;
u32 lane_rx;
u32 lane_tx;
u32 pwr_rx;
u32 pwr_tx;
u32 hs_rate;
};
struct ufs_pwr_mode_info {
bool is_valid;
struct ufs_pa_layer_attr info;
};
/**
* struct ufs_hba_variant_ops - variant specific callbacks
* @ name : variant name
* @ max_num_rtt : maximum RTT supported by the host
* @ init : called when the driver is initialized
* @ exit : called to cleanup everything done in init
* @ set_dma_mask : For setting another DMA mask than indicated by the 64 AS
* capability bit .
* @ get_ufs_hci_version : called to get UFS HCI version
* @ clk_scale_notify : notifies that clks are scaled up / down
* @ setup_clocks : called before touching any of the controller registers
* @ hce_enable_notify : called before and after HCE enable bit is set to allow
* variant specific Uni - Pro initialization .
* @ link_startup_notify : called before and after Link startup is carried out
* to allow variant specific Uni - Pro initialization .
* @ pwr_change_notify : called before and after a power mode change
* is carried out to allow vendor spesific capabilities
* to be set . PRE_CHANGE can modify final_params based
* on desired_pwr_mode , but POST_CHANGE must not alter
* the final_params parameter
* @ setup_xfer_req : called before any transfer request is issued
* to set some things
* @ setup_task_mgmt : called before any task management request is issued
* to set some things
* @ hibern8_notify : called around hibern8 enter / exit
* @ apply_dev_quirks : called to apply device specific quirks
* @ fixup_dev_quirks : called to modify device specific quirks
* @ suspend : called during host controller PM callback
* @ resume : called during host controller PM callback
* @ dbg_register_dump : used to dump controller debug information
* @ phy_initialization : used to initialize phys
* @ device_reset : called to issue a reset pulse on the UFS device
* @ config_scaling_param : called to configure clock scaling parameters
* @ fill_crypto_prdt : initialize crypto - related fields in the PRDT
* @ event_notify : called to notify important events
* @ mcq_config_resource : called to configure MCQ platform resources
* @ get_hba_mac : reports maximum number of outstanding commands supported by
* the controller . Should be implemented for UFSHCI 4 . 0 or later
* controllers that are not compliant with the UFSHCI 4 . 0 specification .
* @ op_runtime_config : called to config Operation and runtime regs Pointers
* @ get_outstanding_cqs : called to get outstanding completion queues
* @ config_esi : called to config Event Specific Interrupt
* @ config_scsi_dev : called to configure SCSI device parameters
* @ freq_to_gear_speed : called to map clock frequency to the max supported gear speed
*/
struct ufs_hba_variant_ops {
const char *name;
int max_num_rtt;
int (*init)(struct ufs_hba *);
void (*exit )(struct ufs_hba *);
u32 (*get_ufs_hci_version)(struct ufs_hba *);
int (*set_dma_mask)(struct ufs_hba *);
int (*clk_scale_notify)(struct ufs_hba *, bool , unsigned long ,
enum ufs_notify_change_status);
int (*setup_clocks)(struct ufs_hba *, bool ,
enum ufs_notify_change_status);
int (*hce_enable_notify)(struct ufs_hba *,
enum ufs_notify_change_status);
int (*link_startup_notify)(struct ufs_hba *,
enum ufs_notify_change_status);
int (*pwr_change_notify)(struct ufs_hba *,
enum ufs_notify_change_status status,
const struct ufs_pa_layer_attr *desired_pwr_mode,
struct ufs_pa_layer_attr *final_params);
void (*setup_xfer_req)(struct ufs_hba *hba, int tag,
bool is_scsi_cmd);
void (*setup_task_mgmt)(struct ufs_hba *, int , u8);
void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
enum ufs_notify_change_status);
int (*apply_dev_quirks)(struct ufs_hba *hba);
void (*fixup_dev_quirks)(struct ufs_hba *hba);
int (*suspend)(struct ufs_hba *, enum ufs_pm_op,
enum ufs_notify_change_status);
int (*resume)(struct ufs_hba *, enum ufs_pm_op);
void (*dbg_register_dump)(struct ufs_hba *hba);
int (*phy_initialization)(struct ufs_hba *);
int (*device_reset)(struct ufs_hba *hba);
void (*config_scaling_param)(struct ufs_hba *hba,
struct devfreq_dev_profile *profile,
struct devfreq_simple_ondemand_data *data);
int (*fill_crypto_prdt)(struct ufs_hba *hba,
const struct bio_crypt_ctx *crypt_ctx,
void *prdt, unsigned int num_segments);
void (*event_notify)(struct ufs_hba *hba,
enum ufs_event_type evt, void *data);
int (*mcq_config_resource)(struct ufs_hba *hba);
int (*get_hba_mac)(struct ufs_hba *hba);
int (*op_runtime_config)(struct ufs_hba *hba);
int (*get_outstanding_cqs)(struct ufs_hba *hba,
unsigned long *ocqs);
int (*config_esi)(struct ufs_hba *hba);
void (*config_scsi_dev)(struct scsi_device *sdev);
u32 (*freq_to_gear_speed)(struct ufs_hba *hba, unsigned long freq);
};
/* clock gating state */
enum clk_gating_state {
CLKS_OFF,
CLKS_ON,
REQ_CLKS_OFF,
REQ_CLKS_ON,
};
/**
* struct ufs_clk_gating - UFS clock gating related info
* @ gate_work : worker to turn off clocks after some delay as specified in
* delay_ms
* @ ungate_work : worker to turn on clocks that will be used in case of
* interrupt context
* @ clk_gating_workq : workqueue for clock gating work .
* @ lock : serialize access to some struct ufs_clk_gating members . An outer lock
* relative to the host lock
* @ state : the current clocks state
* @ delay_ms : gating delay in ms
* @ is_suspended : clk gating is suspended when set to 1 which can be used
* during suspend / resume
* @ delay_attr : sysfs attribute to control delay_attr
* @ enable_attr : sysfs attribute to enable / disable clock gating
* @ is_enabled : Indicates the current status of clock gating
* @ is_initialized : Indicates whether clock gating is initialized or not
* @ active_reqs : number of requests that are pending and should be waited for
* completion before gating clocks .
*/
struct ufs_clk_gating {
struct delayed_work gate_work;
struct work_struct ungate_work;
struct workqueue_struct *clk_gating_workq;
spinlock_t lock;
enum clk_gating_state state;
unsigned long delay_ms;
bool is_suspended;
struct device_attribute delay_attr;
struct device_attribute enable_attr;
bool is_enabled;
bool is_initialized;
int active_reqs;
};
/**
* struct ufs_clk_scaling - UFS clock scaling related data
* @ workq : workqueue to schedule devfreq suspend / resume work
* @ suspend_work : worker to suspend devfreq
* @ resume_work : worker to resume devfreq
* @ lock : serialize access to some struct ufs_clk_scaling members
* @ active_reqs : number of requests that are pending . If this is zero when
* devfreq - > target ( ) function is called then schedule " suspend_work " to
* suspend devfreq .
* @ tot_busy_t : Total busy time in current polling window
* @ window_start_t : Start time ( in jiffies ) of the current polling window
* @ busy_start_t : Start time of current busy period
* @ enable_attr : sysfs attribute to enable / disable clock scaling
* @ saved_pwr_info : UFS power mode may also be changed during scaling and this
* one keeps track of previous power mode .
* @ target_freq : frequency requested by devfreq framework
* @ min_gear : lowest HS gear to scale down to
* @ wb_gear : enable Write Booster when HS gear scales above or equal to it , else
* disable Write Booster
* @ is_enabled : tracks if scaling is currently enabled or not , controlled by
* clkscale_enable sysfs node
* @ is_allowed : tracks if scaling is currently allowed or not , used to block
* clock scaling which is not invoked from devfreq governor
* @ is_initialized : Indicates whether clock scaling is initialized or not
* @ is_busy_started : tracks if busy period has started or not
* @ is_suspended : tracks if devfreq is suspended or not
*/
struct ufs_clk_scaling {
struct workqueue_struct *workq;
struct work_struct suspend_work;
struct work_struct resume_work;
spinlock_t lock;
int active_reqs;
unsigned long tot_busy_t;
ktime_t window_start_t;
ktime_t busy_start_t;
struct device_attribute enable_attr;
struct ufs_pa_layer_attr saved_pwr_info;
unsigned long target_freq;
u32 min_gear;
u32 wb_gear;
bool is_enabled;
bool is_allowed;
bool is_initialized;
bool is_busy_started;
bool is_suspended;
bool suspend_on_no_request;
};
#define UFS_EVENT_HIST_LENGTH 8
/**
* struct ufs_event_hist - keeps history of errors
* @ pos : index to indicate cyclic buffer position
* @ val : cyclic buffer for registers value
* @ tstamp : cyclic buffer for time stamp
* @ cnt : error counter
*/
struct ufs_event_hist {
int pos;
u32 val[UFS_EVENT_HIST_LENGTH];
u64 tstamp[UFS_EVENT_HIST_LENGTH];
unsigned long long cnt;
};
/**
* struct ufs_stats - keeps usage / err statistics
* @ hibern8_exit_cnt : Counter to keep track of number of exits ,
* reset this after link - startup .
* @ last_hibern8_exit_tstamp : Set time after the hibern8 exit .
* Clear after the first successful command completion .
* @ event : array with event history .
*/
struct ufs_stats {
u32 hibern8_exit_cnt;
u64 last_hibern8_exit_tstamp;
struct ufs_event_hist event[UFS_EVT_CNT];
};
/**
* enum ufshcd_state - UFS host controller state
* @ UFSHCD_STATE_RESET : Link is not operational . Postpone SCSI command
* processing .
* @ UFSHCD_STATE_OPERATIONAL : The host controller is operational and can process
* SCSI commands .
* @ UFSHCD_STATE_EH_SCHEDULED_NON_FATAL : The error handler has been scheduled .
* SCSI commands may be submitted to the controller .
* @ UFSHCD_STATE_EH_SCHEDULED_FATAL : The error handler has been scheduled . Fail
* newly submitted SCSI commands with error code DID_BAD_TARGET .
* @ UFSHCD_STATE_ERROR : An unrecoverable error occurred , e . g . link recovery
* failed . Fail all SCSI commands with error code DID_ERROR .
*/
enum ufshcd_state {
UFSHCD_STATE_RESET,
UFSHCD_STATE_OPERATIONAL,
UFSHCD_STATE_EH_SCHEDULED_NON_FATAL,
UFSHCD_STATE_EH_SCHEDULED_FATAL,
UFSHCD_STATE_ERROR,
};
enum ufshcd_quirks {
/* Interrupt aggregation support is broken */
UFSHCD_QUIRK_BROKEN_INTR_AGGR = 1 << 0 ,
/*
* delay before each dme command is required as the unipro
* layer has shown instabilities
*/
UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS = 1 << 1 ,
/*
* If UFS host controller is having issue in processing LCC ( Line
* Control Command ) coming from device then enable this quirk .
* When this quirk is enabled , host controller driver should disable
* the LCC transmission on UFS device ( by clearing TX_LCC_ENABLE
* attribute of device to 0 ) .
*/
UFSHCD_QUIRK_BROKEN_LCC = 1 << 2 ,
/*
* The attribute PA_RXHSUNTERMCAP specifies whether or not the
* inbound Link supports unterminated line in HS mode . Setting this
* attribute to 1 fixes moving to HS gear .
*/
UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP = 1 << 3 ,
/*
* This quirk needs to be enabled if the host controller only allows
* accessing the peer dme attributes in AUTO mode ( FAST AUTO or
* SLOW AUTO ) .
*/
UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE = 1 << 4 ,
/*
* This quirk needs to be enabled if the host controller doesn ' t
* advertise the correct version in UFS_VER register . If this quirk
* is enabled , standard UFS host driver will call the vendor specific
* ops ( get_ufs_hci_version ) to get the correct version .
*/
UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5 ,
/*
* Clear handling for transfer / task request list is just opposite .
*/
UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6 ,
/*
* This quirk needs to be enabled if host controller doesn ' t allow
* that the interrupt aggregation timer and counter are reset by s / w .
*/
UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7 ,
/*
* This quirks needs to be enabled if host controller cannot be
* enabled via HCE register .
*/
UFSHCI_QUIRK_BROKEN_HCE = 1 << 8 ,
/*
* This quirk needs to be enabled if the host controller regards
* resolution of the values of PRDTO and PRDTL in UTRD as byte .
*/
UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9 ,
/*
* This quirk needs to be enabled if the host controller reports
* OCS FATAL ERROR with device error through sense data
*/
UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10 ,
/*
* This quirk needs to be enabled if the host controller has
* auto - hibernate capability but it doesn ' t work .
*/
UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11 ,
/*
* This quirk needs to disable manual flush for write booster
*/
UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12 ,
/*
* This quirk needs to disable unipro timeout values
* before power mode change
*/
UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13 ,
/*
* This quirk needs to be enabled if the host controller does not
* support UIC command
*/
UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15 ,
/*
* This quirk needs to be enabled if the host controller cannot
* support physical host configuration .
*/
UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16 ,
/*
* This quirk needs to be enabled if the host controller has
* auto - hibernate capability but it ' s FASTAUTO only .
*/
UFSHCD_QUIRK_HIBERN_FASTAUTO = 1 << 18 ,
/*
* This quirk needs to be enabled if the host controller needs
* to reinit the device after switching to maximum gear .
*/
UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH = 1 << 19 ,
/*
* Some host raises interrupt ( per queue ) in addition to
* CQES ( traditional ) when ESI is disabled .
* Enable this quirk will disable CQES and use per queue interrupt .
*/
UFSHCD_QUIRK_MCQ_BROKEN_INTR = 1 << 20 ,
/*
* Some host does not implement SQ Run Time Command ( SQRTC ) register
* thus need this quirk to skip related flow .
*/
UFSHCD_QUIRK_MCQ_BROKEN_RTC = 1 << 21 ,
/*
* This quirk needs to be enabled if the host controller supports inline
* encryption but it needs to initialize the crypto capabilities in a
* nonstandard way and / or needs to override blk_crypto_ll_ops . If
* enabled , the standard code won ' t initialize the blk_crypto_profile ;
* ufs_hba_variant_ops : : init ( ) must do it instead .
*/
UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE = 1 << 22 ,
/*
* This quirk needs to be enabled if the host controller supports inline
* encryption but does not support the CRYPTO_GENERAL_ENABLE bit , i . e .
* host controller initialization fails if that bit is set .
*/
UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE = 1 << 23 ,
/*
* This quirk needs to be enabled if the host controller driver copies
* cryptographic keys into the PRDT in order to send them to hardware ,
* and therefore the PRDT should be zeroized after each request ( as per
* the standard best practice for managing keys ) .
*/
UFSHCD_QUIRK_KEYS_IN_PRDT = 1 << 24 ,
/*
* This quirk indicates that the controller reports the value 1 ( not
* supported ) in the Legacy Single DoorBell Support ( LSDBS ) bit of the
* Controller Capabilities register although it supports the legacy
* single doorbell mode .
*/
UFSHCD_QUIRK_BROKEN_LSDBS_CAP = 1 << 25 ,
/*
* This quirk indicates that DME_LINKSTARTUP should not be issued a 2 nd
* time ( refer link_startup_again ) after the 1 st time was successful ,
* because it causes link startup to become unreliable .
*/
UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE = 1 << 26 ,
};
enum ufshcd_caps {
/* Allow dynamic clk gating */
UFSHCD_CAP_CLK_GATING = 1 << 0 ,
/* Allow hiberb8 with clk gating */
UFSHCD_CAP_HIBERN8_WITH_CLK_GATING = 1 << 1 ,
/* Allow dynamic clk scaling */
UFSHCD_CAP_CLK_SCALING = 1 << 2 ,
/* Allow auto bkops to enabled during runtime suspend */
UFSHCD_CAP_AUTO_BKOPS_SUSPEND = 1 << 3 ,
/*
* This capability allows host controller driver to use the UFS HCI ' s
* interrupt aggregation capability .
* CAUTION : Enabling this might reduce overall UFS throughput .
*/
UFSHCD_CAP_INTR_AGGR = 1 << 4 ,
/*
* This capability allows the device auto - bkops to be always enabled
* except during suspend ( both runtime and suspend ) .
* Enabling this capability means that device will always be allowed
* to do background operation when it ' s active but it might degrade
* the performance of ongoing read / write operations .
*/
UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND = 1 << 5 ,
/*
* This capability allows host controller driver to automatically
* enable runtime power management by itself instead of waiting
* for userspace to control the power management .
*/
UFSHCD_CAP_RPM_AUTOSUSPEND = 1 << 6 ,
/*
* This capability allows the host controller driver to turn - on
* WriteBooster , if the underlying device supports it and is
* provisioned to be used . This would increase the write performance .
*/
UFSHCD_CAP_WB_EN = 1 << 7 ,
/*
* This capability allows the host controller driver to use the
* inline crypto engine , if it is present
*/
UFSHCD_CAP_CRYPTO = 1 << 8 ,
/*
* This capability allows the controller regulators to be put into
* lpm mode aggressively during clock gating .
* This would increase power savings .
*/
UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9 ,
/*
* This capability allows the host controller driver to use DeepSleep ,
* if it is supported by the UFS device . The host controller driver must
* support device hardware reset via the hba - > device_reset ( ) callback ,
* in order to exit DeepSleep state .
*/
UFSHCD_CAP_DEEPSLEEP = 1 << 10 ,
/*
* This capability allows the host controller driver to use temperature
* notification if it is supported by the UFS device .
*/
UFSHCD_CAP_TEMP_NOTIF = 1 << 11 ,
/*
* Enable WriteBooster when scaling up the clock and disable
* WriteBooster when scaling the clock down .
*/
UFSHCD_CAP_WB_WITH_CLK_SCALING = 1 << 12 ,
};
struct ufs_hba_variant_params {
struct devfreq_dev_profile devfreq_profile;
struct devfreq_simple_ondemand_data ondemand_data;
u16 hba_enable_delay_us;
u32 wb_flush_threshold;
};
struct ufs_hba_monitor {
unsigned long chunk_size;
unsigned long nr_sec_rw[2 ];
ktime_t total_busy[2 ];
unsigned long nr_req[2 ];
/* latencies*/
ktime_t lat_sum[2 ];
ktime_t lat_max[2 ];
ktime_t lat_min[2 ];
u32 nr_queued[2 ];
ktime_t busy_start_ts[2 ];
ktime_t enabled_ts;
bool enabled;
};
/**
* struct ufshcd_res_info_t - MCQ related resource regions
*
* @ name : resource name
* @ resource : pointer to resource region
* @ base : register base address
*/
struct ufshcd_res_info {
const char *name;
struct resource *resource;
void __iomem *base;
};
enum ufshcd_res {
RES_UFS,
RES_MCQ,
RES_MCQ_SQD,
RES_MCQ_SQIS,
RES_MCQ_CQD,
RES_MCQ_CQIS,
RES_MCQ_VS,
RES_MAX,
};
/**
* struct ufshcd_mcq_opr_info_t - Operation and Runtime registers
*
* @ offset : Doorbell Address Offset
* @ stride : Steps proportional to queue [ 0 . . . 31 ]
* @ base : base address
*/
struct ufshcd_mcq_opr_info_t {
unsigned long offset;
unsigned long stride;
void __iomem *base;
};
enum ufshcd_mcq_opr {
OPR_SQD,
OPR_SQIS,
OPR_CQD,
OPR_CQIS,
OPR_MAX,
};
/**
* struct ufs_hba - per adapter private structure
* @ mmio_base : UFSHCI base register address
* @ ucdl_base_addr : UFS Command Descriptor base address
* @ utrdl_base_addr : UTP Transfer Request Descriptor base address
* @ utmrdl_base_addr : UTP Task Management Descriptor base address
* @ ucdl_dma_addr : UFS Command Descriptor DMA address
* @ utrdl_dma_addr : UTRDL DMA address
* @ utmrdl_dma_addr : UTMRDL DMA address
* @ host : Scsi_Host instance of the driver
* @ dev : device handle
* @ ufs_device_wlun : WLUN that controls the entire UFS device .
* @ hwmon_device : device instance registered with the hwmon core .
* @ curr_dev_pwr_mode : active UFS device power mode .
* @ uic_link_state : active state of the link to the UFS device .
* @ rpm_lvl : desired UFS power management level during runtime PM .
* @ spm_lvl : desired UFS power management level during system PM .
* @ pm_op_in_progress : whether or not a PM operation is in progress .
* @ ahit : value of Auto - Hibernate Idle Timer register .
* @ lrb : local reference block
* @ outstanding_tasks : Bits representing outstanding task requests
* @ outstanding_lock : Protects @ outstanding_reqs .
* @ outstanding_reqs : Bits representing outstanding transfer requests
* @ capabilities : UFS Controller Capabilities
* @ mcq_capabilities : UFS Multi Circular Queue capabilities
* @ nutrs : Transfer Request Queue depth supported by controller
* @ nortt - Max outstanding RTTs supported by controller
* @ nutmrs : Task Management Queue depth supported by controller
* @ reserved_slot : Used to submit device commands . Protected by @ dev_cmd . lock .
* @ ufs_version : UFS Version to which controller complies
* @ vops : pointer to variant specific operations
* @ vps : pointer to variant specific parameters
* @ priv : pointer to variant specific private data
* @ sg_entry_size : size of struct ufshcd_sg_entry ( may include variant fields )
* @ irq : Irq number of the controller
* @ is_irq_enabled : whether or not the UFS controller interrupt is enabled .
* @ dev_ref_clk_freq : reference clock frequency
* @ quirks : bitmask with information about deviations from the UFSHCI standard .
* @ dev_quirks : bitmask with information about deviations from the UFS standard .
* @ tmf_tag_set : TMF tag set .
* @ tmf_queue : Used to allocate TMF tags .
* @ tmf_rqs : array with pointers to TMF requests while these are in progress .
* @ active_uic_cmd : pointer to active UIC command .
* @ uic_cmd_mutex : mutex used for serializing UIC command processing .
* @ uic_async_done : completion used to wait for power mode or hibernation state
* changes .
* @ ufshcd_state : UFSHCD state
* @ eh_flags : Error handling flags
* @ intr_mask : Interrupt Mask Bits
* @ ee_ctrl_mask : Exception event control mask
* @ ee_drv_mask : Exception event mask for driver
* @ ee_usr_mask : Exception event mask for user ( set via debugfs )
* @ ee_ctrl_mutex : Used to serialize exception event information .
* @ is_powered : flag to check if HBA is powered
* @ shutting_down : flag to check if shutdown has been invoked
* @ host_sem : semaphore used to serialize concurrent contexts
* @ eh_wq : Workqueue that eh_work works on
* @ eh_work : Worker to handle UFS errors that require s / w attention
* @ eeh_work : Worker to handle exception events
* @ errors : HBA errors
* @ uic_error : UFS interconnect layer error status
* @ saved_err : sticky error mask
* @ saved_uic_err : sticky UIC error mask
* @ ufs_stats : various error counters
* @ force_reset : flag to force eh_work perform a full reset
* @ force_pmc : flag to force a power mode change
* @ silence_err_logs : flag to silence error logs
* @ dev_cmd : ufs device management command information
* @ last_dme_cmd_tstamp : time stamp of the last completed DME command
* @ nop_out_timeout : NOP OUT timeout value
* @ dev_info : information about the UFS device
* @ auto_bkops_enabled : to track whether bkops is enabled in device
* @ vreg_info : UFS device voltage regulator information
* @ clk_list_head : UFS host controller clocks list node head
* @ use_pm_opp : Indicates whether OPP based scaling is used or not
* @ req_abort_count : number of times ufshcd_abort ( ) has been called
* @ lanes_per_direction : number of lanes per data direction between the UFS
* controller and the UFS device .
* @ pwr_info : holds current power mode
* @ max_pwr_info : keeps the device max valid pwm
* @ clk_gating : information related to clock gating
* @ caps : bitmask with information about UFS controller capabilities
* @ devfreq : frequency scaling information owned by the devfreq core
* @ clk_scaling : frequency scaling information owned by the UFS driver
* @ system_suspending : system suspend has been started and system resume has
* not yet finished .
* @ is_sys_suspended : UFS device has been suspended because of system suspend
* @ urgent_bkops_lvl : keeps track of urgent bkops level for device
* @ is_urgent_bkops_lvl_checked : keeps track if the urgent bkops level for
* device is known or not .
* @ wb_mutex : used to serialize devfreq and sysfs write booster toggling
* @ clk_scaling_lock : used to serialize device commands and clock scaling
* @ desc_size : descriptor sizes reported by device
* @ bsg_dev : struct device associated with the BSG queue
* @ bsg_queue : BSG queue associated with the UFS controller
* @ rpm_dev_flush_recheck_work : used to suspend from RPM ( runtime power
* management ) after the UFS device has finished a WriteBooster buffer
* flush or auto BKOP .
* @ monitor : statistics about UFS commands
* @ crypto_capabilities : Content of crypto capabilities register ( 0 x100 )
* @ crypto_cap_array : Array of crypto capabilities
* @ crypto_cfg_register : Start of the crypto cfg array
* @ crypto_profile : the crypto profile of this hba ( if applicable )
* @ debugfs_root : UFS controller debugfs root directory
* @ debugfs_ee_work : used to restore ee_ctrl_mask after a delay
* @ debugfs_ee_rate_limit_ms : user configurable delay after which to restore
* ee_ctrl_mask
* @ luns_avail : number of regular and well known LUNs supported by the UFS
* device
* @ nr_hw_queues : number of hardware queues configured
* @ nr_queues : number of Queues of different queue types
* @ complete_put : whether or not to call ufshcd_rpm_put ( ) from inside
* ufshcd_resume_complete ( )
* @ mcq_sup : is mcq supported by UFSHC
* @ mcq_enabled : is mcq ready to accept requests
* @ mcq_esi_enabled : is mcq ESI configured
* @ res : array of resource info of MCQ registers
* @ mcq_base : Multi circular queue registers base address
* @ uhq : array of supported hardware queues
* @ dev_cmd_queue : Queue for issuing device management commands
* @ mcq_opr : MCQ operation and runtime registers
* @ ufs_rtc_update_work : A work for UFS RTC periodic update
* @ pm_qos_req : PM QoS request handle
* @ pm_qos_enabled : flag to check if pm qos is enabled
* @ pm_qos_mutex : synchronizes PM QoS request and status updates
* @ critical_health_count : count of critical health exceptions
* @ dev_lvl_exception_count : count of device level exceptions since last reset
* @ dev_lvl_exception_id : vendor specific information about the
* device level exception event .
*/
struct ufs_hba {
void __iomem *mmio_base;
/* Virtual memory reference */
struct utp_transfer_cmd_desc *ucdl_base_addr;
struct utp_transfer_req_desc *utrdl_base_addr;
struct utp_task_req_desc *utmrdl_base_addr;
/* DMA memory reference */
dma_addr_t ucdl_dma_addr;
dma_addr_t utrdl_dma_addr;
dma_addr_t utmrdl_dma_addr;
struct Scsi_Host *host;
struct device *dev;
struct scsi_device *ufs_device_wlun;
#ifdef CONFIG_SCSI_UFS_HWMON
struct device *hwmon_device;
#endif
enum ufs_dev_pwr_mode curr_dev_pwr_mode;
enum uic_link_state uic_link_state;
/* Desired UFS power management level during runtime PM */
enum ufs_pm_level rpm_lvl;
/* Desired UFS power management level during system PM */
enum ufs_pm_level spm_lvl;
int pm_op_in_progress;
/* Auto-Hibernate Idle Timer register value */
u32 ahit;
struct ufshcd_lrb *lrb;
unsigned long outstanding_tasks;
spinlock_t outstanding_lock;
unsigned long outstanding_reqs;
u32 capabilities;
int nutrs;
int nortt;
u32 mcq_capabilities;
int nutmrs;
u32 reserved_slot;
u32 ufs_version;
const struct ufs_hba_variant_ops *vops;
struct ufs_hba_variant_params *vps;
void *priv;
#ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
size_t sg_entry_size;
#endif
unsigned int irq;
bool is_irq_enabled;
enum ufs_ref_clk_freq dev_ref_clk_freq;
unsigned int quirks; /* Deviations from standard UFSHCI spec. */
/* Device deviations from standard UFS device spec. */
unsigned int dev_quirks;
struct blk_mq_tag_set tmf_tag_set;
struct request_queue *tmf_queue;
struct request **tmf_rqs;
struct uic_command *active_uic_cmd;
struct mutex uic_cmd_mutex;
struct completion *uic_async_done;
enum ufshcd_state ufshcd_state;
u32 eh_flags;
u32 intr_mask;
u16 ee_ctrl_mask;
u16 ee_drv_mask;
u16 ee_usr_mask;
struct mutex ee_ctrl_mutex;
bool is_powered;
bool shutting_down;
struct semaphore host_sem;
/* Work Queues */
struct workqueue_struct *eh_wq;
struct work_struct eh_work;
struct work_struct eeh_work;
/* HBA Errors */
u32 errors;
u32 uic_error;
u32 saved_err;
u32 saved_uic_err;
struct ufs_stats ufs_stats;
bool force_reset;
bool force_pmc;
bool silence_err_logs;
/* Device management request data */
struct ufs_dev_cmd dev_cmd;
ktime_t last_dme_cmd_tstamp;
int nop_out_timeout;
/* Keeps information of the UFS device connected to this host */
struct ufs_dev_info dev_info;
bool auto_bkops_enabled;
struct ufs_vreg_info vreg_info;
struct list_head clk_list_head;
bool use_pm_opp;
/* Number of requests aborts */
int req_abort_count;
/* Number of lanes available (1 or 2) for Rx/Tx */
u32 lanes_per_direction;
struct ufs_pa_layer_attr pwr_info;
struct ufs_pwr_mode_info max_pwr_info;
struct ufs_clk_gating clk_gating;
/* Control to enable/disable host capabilities */
u32 caps;
struct devfreq *devfreq;
struct ufs_clk_scaling clk_scaling;
bool system_suspending;
bool is_sys_suspended;
enum bkops_status urgent_bkops_lvl;
bool is_urgent_bkops_lvl_checked;
struct mutex wb_mutex;
struct rw_semaphore clk_scaling_lock;
struct device bsg_dev;
struct request_queue *bsg_queue;
struct delayed_work rpm_dev_flush_recheck_work;
struct ufs_hba_monitor monitor;
#ifdef CONFIG_SCSI_UFS_CRYPTO
union ufs_crypto_capabilities crypto_capabilities;
union ufs_crypto_cap_entry *crypto_cap_array;
u32 crypto_cfg_register;
struct blk_crypto_profile crypto_profile;
#endif
#ifdef CONFIG_DEBUG_FS
struct dentry *debugfs_root;
struct delayed_work debugfs_ee_work;
u32 debugfs_ee_rate_limit_ms;
#endif
#ifdef CONFIG_SCSI_UFS_FAULT_INJECTION
struct fault_attr trigger_eh_attr;
struct fault_attr timeout_attr;
#endif
u32 luns_avail;
unsigned int nr_hw_queues;
unsigned int nr_queues[HCTX_MAX_TYPES];
bool complete_put;
bool scsi_host_added;
bool mcq_sup;
bool lsdb_sup;
bool mcq_enabled;
bool mcq_esi_enabled;
struct ufshcd_res_info res[RES_MAX];
void __iomem *mcq_base;
struct ufs_hw_queue *uhq;
struct ufs_hw_queue *dev_cmd_queue;
struct ufshcd_mcq_opr_info_t mcq_opr[OPR_MAX];
struct delayed_work ufs_rtc_update_work;
struct pm_qos_request pm_qos_req;
bool pm_qos_enabled;
/* synchronizes PM QoS request and status updates */
struct mutex pm_qos_mutex;
int critical_health_count;
atomic_t dev_lvl_exception_count;
u64 dev_lvl_exception_id;
};
/**
* struct ufs_hw_queue - per hardware queue structure
* @ mcq_sq_head : base address of submission queue head pointer
* @ mcq_sq_tail : base address of submission queue tail pointer
* @ mcq_cq_head : base address of completion queue head pointer
* @ mcq_cq_tail : base address of completion queue tail pointer
* @ sqe_base_addr : submission queue entry base address
* @ sqe_dma_addr : submission queue dma address
* @ cqe_base_addr : completion queue base address
* @ cqe_dma_addr : completion queue dma address
* @ max_entries : max number of slots in this hardware queue
* @ id : hardware queue ID
* @ sq_tp_slot : current slot to which SQ tail pointer is pointing
* @ sq_lock : serialize submission queue access
* @ cq_tail_slot : current slot to which CQ tail pointer is pointing
* @ cq_head_slot : current slot to which CQ head pointer is pointing
* @ cq_lock : Synchronize between multiple polling instances
* @ sq_mutex : prevent submission queue concurrent access
*/
struct ufs_hw_queue {
void __iomem *mcq_sq_head;
void __iomem *mcq_sq_tail;
void __iomem *mcq_cq_head;
void __iomem *mcq_cq_tail;
struct utp_transfer_req_desc *sqe_base_addr;
dma_addr_t sqe_dma_addr;
struct cq_entry *cqe_base_addr;
dma_addr_t cqe_dma_addr;
u32 max_entries;
u32 id;
u32 sq_tail_slot;
spinlock_t sq_lock;
u32 cq_tail_slot;
u32 cq_head_slot;
spinlock_t cq_lock;
/* prevent concurrent access to submission queue */
struct mutex sq_mutex;
};
#define MCQ_QCFG_SIZE 0 x40
static inline unsigned int ufshcd_mcq_opr_offset(struct ufs_hba *hba,
enum ufshcd_mcq_opr opr, int idx)
{
return hba->mcq_opr[opr].offset + hba->mcq_opr[opr].stride * idx;
}
static inline unsigned int ufshcd_mcq_cfg_offset(unsigned int reg, int idx)
{
return reg + MCQ_QCFG_SIZE * idx;
}
#ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
{
return hba->sg_entry_size;
}
static inline void ufshcd_set_sg_entry_size(struct ufs_hba *hba, size_t sg_entry_size)
{
WARN_ON_ONCE(sg_entry_size < sizeof (struct ufshcd_sg_entry));
hba->sg_entry_size = sg_entry_size;
}
#else
static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
{
return sizeof (struct ufshcd_sg_entry);
}
#define ufshcd_set_sg_entry_size(hba, sg_entry_size) \
({ (void )(hba); BUILD_BUG_ON(sg_entry_size != sizeof (struct ufshcd_sg_entry)); })
#endif
#ifdef CONFIG_SCSI_UFS_CRYPTO
static inline struct ufs_hba *
ufs_hba_from_crypto_profile(struct blk_crypto_profile *profile)
{
return container_of(profile, struct ufs_hba, crypto_profile);
}
#endif
static inline size_t ufshcd_get_ucd_size(const struct ufs_hba *hba)
{
return sizeof (struct utp_transfer_cmd_desc) + SG_ALL * ufshcd_sg_entry_size(hba);
}
/* Returns true if clocks can be gated. Otherwise false */
static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_CLK_GATING;
}
static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
}
static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_CLK_SCALING;
}
static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
}
static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND;
}
static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
{
return (hba->caps & UFSHCD_CAP_INTR_AGGR) &&
!(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR);
}
static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba)
{
return !!(ufshcd_is_link_hibern8(hba) &&
(hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE));
}
static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
{
return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&
!(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8);
}
static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
{
return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit);
}
static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_WB_EN;
}
static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba)
{
return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING;
}
#define ufsmcq_writel(hba, val, reg) \
writel((val), (hba)->mcq_base + (reg))
#define ufsmcq_readl(hba, reg) \
readl((hba)->mcq_base + (reg))
#define ufsmcq_writelx(hba, val, reg) \
writel_relaxed((val), (hba)->mcq_base + (reg))
#define ufsmcq_readlx(hba, reg) \
readl_relaxed((hba)->mcq_base + (reg))
#define ufshcd_writel(hba, val, reg) \
writel((val), (hba)->mmio_base + (reg))
#define ufshcd_readl(hba, reg) \
readl((hba)->mmio_base + (reg))
/**
* ufshcd_rmwl - perform read / modify / write for a controller register
* @ hba : per adapter instance
* @ mask : mask to apply on read value
* @ val : actual value to write
* @ reg : register address
*/
static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
{
u32 tmp;
tmp = ufshcd_readl(hba, reg);
tmp &= ~mask;
tmp |= (val & mask);
ufshcd_writel(hba, tmp, reg);
}
void ufshcd_enable_irq(struct ufs_hba *hba);
void ufshcd_disable_irq(struct ufs_hba *hba);
void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs);
int ufshcd_alloc_host(struct device *, struct ufs_hba **);
int ufshcd_hba_enable(struct ufs_hba *hba);
int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int );
int ufshcd_link_recovery(struct ufs_hba *hba);
int ufshcd_make_hba_operational(struct ufs_hba *hba);
void ufshcd_remove(struct ufs_hba *);
int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
void ufshcd_hba_stop(struct ufs_hba *hba);
void ufshcd_schedule_eh_work(struct ufs_hba *hba);
void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 max_active_cmds);
unsigned int ufshcd_mcq_queue_cfg_addr(struct ufs_hba *hba);
u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i);
void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i);
unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
struct ufs_hw_queue *hwq);
void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
void ufshcd_mcq_enable(struct ufs_hba *hba);
void ufshcd_mcq_enable_esi(struct ufs_hba *hba);
void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg);
int ufshcd_opp_config_clks(struct device *dev, struct opp_table *opp_table,
struct dev_pm_opp *opp, void *data,
bool scaling_down);
/**
* ufshcd_set_variant - set variant specific data to the hba
* @ hba : per adapter instance
* @ variant : pointer to variant specific data
*/
static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
{
BUG_ON(!hba);
hba->priv = variant;
}
/**
* ufshcd_get_variant - get variant specific data from the hba
* @ hba : per adapter instance
*/
static inline void *ufshcd_get_variant(struct ufs_hba *hba)
{
BUG_ON(!hba);
return hba->priv;
}
#ifdef CONFIG_PM
extern int ufshcd_runtime_suspend(struct device *dev);
extern int ufshcd_runtime_resume(struct device *dev);
#endif
#ifdef CONFIG_PM_SLEEP
extern int ufshcd_system_suspend(struct device *dev);
extern int ufshcd_system_resume(struct device *dev);
extern int ufshcd_system_freeze(struct device *dev);
extern int ufshcd_system_thaw(struct device *dev);
extern int ufshcd_system_restore(struct device *dev);
#endif
extern int ufshcd_dme_reset(struct ufs_hba *hba);
extern int ufshcd_dme_enable(struct ufs_hba *hba);
extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
int agreed_gear,
int adapt_val);
extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
u8 attr_set, u32 mib_val, u8 peer);
extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
u32 *mib_val, u8 peer);
extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
struct ufs_pa_layer_attr *desired_pwr_mode);
extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode);
/* UIC command interfaces for DME primitives */
#define DME_LOCAL 0
#define DME_PEER 1
#define ATTR_SET_NOR 0 /* NORMAL */
#define ATTR_SET_ST 1 /* STATIC */
static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
u32 mib_val)
{
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
mib_val, DME_LOCAL);
}
static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
u32 mib_val)
{
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
mib_val, DME_LOCAL);
}
static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
u32 mib_val)
{
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
mib_val, DME_PEER);
}
static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
u32 mib_val)
{
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
mib_val, DME_PEER);
}
static inline int ufshcd_dme_get(struct ufs_hba *hba,
u32 attr_sel, u32 *mib_val)
{
return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
}
static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
u32 attr_sel, u32 *mib_val)
{
return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
}
static inline bool ufshcd_is_hs_mode(const struct ufs_pa_layer_attr *pwr_info)
{
return (pwr_info->pwr_rx == FAST_MODE ||
pwr_info->pwr_rx == FASTAUTO_MODE) &&
(pwr_info->pwr_tx == FAST_MODE ||
pwr_info->pwr_tx == FASTAUTO_MODE);
}
static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
{
return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0 );
}
void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
const struct ufs_dev_quirk *fixups);
#define SD_ASCII_STD true
#define SD_RAW false
int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
u8 **buf, bool ascii);
void ufshcd_hold(struct ufs_hba *hba);
void ufshcd_release(struct ufs_hba *hba);
void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value);
int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg);
int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd);
int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *req_upiu,
struct utp_upiu_req *rsp_upiu, struct ufs_ehs *ehs_req,
struct ufs_ehs *ehs_rsp, int sg_cnt,
struct scatterlist *sg_list, enum dma_data_direction dir);
int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable);
int ufshcd_wb_set_resize_en(struct ufs_hba *hba, enum wb_resize_en en_mode);
int ufshcd_suspend_prepare(struct device *dev);
int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
void ufshcd_resume_complete(struct device *dev);
bool ufshcd_is_hba_active(struct ufs_hba *hba);
void ufshcd_pm_qos_init(struct ufs_hba *hba);
void ufshcd_pm_qos_exit(struct ufs_hba *hba);
int ufshcd_dme_rmw(struct ufs_hba *hba, u32 mask, u32 val, u32 attr);
/* Wrapper functions for safely calling variant operations */
static inline int ufshcd_vops_init(struct ufs_hba *hba)
{
if (hba->vops && hba->vops->init)
return hba->vops->init(hba);
return 0 ;
}
static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
{
if (hba->vops && hba->vops->phy_initialization)
return hba->vops->phy_initialization(hba);
return 0 ;
}
extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
const char *prefix);
int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask);
int ufshcd_write_ee_control(struct ufs_hba *hba);
int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask,
const u16 *other_mask, u16 set, u16 clr);
void ufshcd_force_error_recovery(struct ufs_hba *hba);
#endif /* End of Header */
Messung V0.5 in Prozent C=94 H=100 G=96
[Verzeichnis aufwärts0.183unsichere VerbindungÜbersetzung europäischer Sprachen durch Browser2026-09-28]
2026-10-10
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