1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Universal Flash Storage Host controller driver
4 * Copyright (C) 2011-2013 Samsung India Software Operations
5 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
8 * Santosh Yaraganavi <santosh.sy@samsung.com>
9 * Vinayak Holikatti <h.vinayak@samsung.com>
15 #include <linux/bitfield.h>
16 #include <linux/blk-crypto-profile.h>
17 #include <linux/blk-mq.h>
18 #include <linux/devfreq.h>
19 #include <linux/msi.h>
20 #include <linux/pm_runtime.h>
21 #include <linux/dma-direction.h>
22 #include <scsi/scsi_device.h>
23 #include <scsi/scsi_host.h>
24 #include <ufs/unipro.h>
26 #include <ufs/ufs_quirks.h>
27 #include <ufs/ufshci.h>
29 #define UFSHCD "ufshcd"
34 DEV_CMD_TYPE_NOP = 0x0,
35 DEV_CMD_TYPE_QUERY = 0x1,
36 DEV_CMD_TYPE_RPMB = 0x2,
40 /* uic specific errors */
48 UFS_EVT_AUTO_HIBERN8_ERR,
50 UFS_EVT_LINK_STARTUP_FAIL,
65 * struct uic_command - UIC command structure
66 * @command: UIC command
67 * @argument1: UIC command argument 1
68 * @argument2: UIC command argument 2
69 * @argument3: UIC command argument 3
70 * @cmd_active: Indicate if UIC command is outstanding
71 * @done: UIC command completion
79 struct completion done;
82 /* Used to differentiate the power management options */
89 /* Host <-> Device UniPro Link state */
91 UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */
92 UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */
93 UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */
94 UIC_LINK_BROKEN_STATE = 3, /* Link is in broken state */
97 #define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
98 #define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
99 UIC_LINK_ACTIVE_STATE)
100 #define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
101 UIC_LINK_HIBERN8_STATE)
102 #define ufshcd_is_link_broken(hba) ((hba)->uic_link_state == \
103 UIC_LINK_BROKEN_STATE)
104 #define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
105 #define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
106 UIC_LINK_ACTIVE_STATE)
107 #define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
108 UIC_LINK_HIBERN8_STATE)
109 #define ufshcd_set_link_broken(hba) ((hba)->uic_link_state = \
110 UIC_LINK_BROKEN_STATE)
112 #define ufshcd_set_ufs_dev_active(h) \
113 ((h)->curr_dev_pwr_mode = UFS_ACTIVE_PWR_MODE)
114 #define ufshcd_set_ufs_dev_sleep(h) \
115 ((h)->curr_dev_pwr_mode = UFS_SLEEP_PWR_MODE)
116 #define ufshcd_set_ufs_dev_poweroff(h) \
117 ((h)->curr_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE)
118 #define ufshcd_set_ufs_dev_deepsleep(h) \
119 ((h)->curr_dev_pwr_mode = UFS_DEEPSLEEP_PWR_MODE)
120 #define ufshcd_is_ufs_dev_active(h) \
121 ((h)->curr_dev_pwr_mode == UFS_ACTIVE_PWR_MODE)
122 #define ufshcd_is_ufs_dev_sleep(h) \
123 ((h)->curr_dev_pwr_mode == UFS_SLEEP_PWR_MODE)
124 #define ufshcd_is_ufs_dev_poweroff(h) \
125 ((h)->curr_dev_pwr_mode == UFS_POWERDOWN_PWR_MODE)
126 #define ufshcd_is_ufs_dev_deepsleep(h) \
127 ((h)->curr_dev_pwr_mode == UFS_DEEPSLEEP_PWR_MODE)
130 * UFS Power management levels.
131 * Each level is in increasing order of power savings, except DeepSleep
132 * which is lower than PowerDown with power on but not PowerDown with
146 struct ufs_pm_lvl_states {
147 enum ufs_dev_pwr_mode dev_state;
148 enum uic_link_state link_state;
152 * struct ufshcd_lrb - local reference block
153 * @utr_descriptor_ptr: UTRD address of the command
154 * @ucd_req_ptr: UCD address of the command
155 * @ucd_rsp_ptr: Response UPIU address for this command
156 * @ucd_prdt_ptr: PRDT address of the command
157 * @utrd_dma_addr: UTRD dma address for debug
158 * @ucd_prdt_dma_addr: PRDT dma address for debug
159 * @ucd_rsp_dma_addr: UPIU response dma address for debug
160 * @ucd_req_dma_addr: UPIU request dma address for debug
161 * @cmd: pointer to SCSI command
162 * @scsi_status: SCSI status of the command
163 * @command_type: SCSI, UFS, Query.
164 * @task_tag: Task tag of the command
165 * @lun: LUN of the command
166 * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
167 * @issue_time_stamp: time stamp for debug purposes (CLOCK_MONOTONIC)
168 * @issue_time_stamp_local_clock: time stamp for debug purposes (local_clock)
169 * @compl_time_stamp: time stamp for statistics (CLOCK_MONOTONIC)
170 * @compl_time_stamp_local_clock: time stamp for debug purposes (local_clock)
171 * @crypto_key_slot: the key slot to use for inline crypto (-1 if none)
172 * @data_unit_num: the data unit number for the first block for inline crypto
173 * @req_abort_skip: skip request abort task flag
176 struct utp_transfer_req_desc *utr_descriptor_ptr;
177 struct utp_upiu_req *ucd_req_ptr;
178 struct utp_upiu_rsp *ucd_rsp_ptr;
179 struct ufshcd_sg_entry *ucd_prdt_ptr;
181 dma_addr_t utrd_dma_addr;
182 dma_addr_t ucd_req_dma_addr;
183 dma_addr_t ucd_rsp_dma_addr;
184 dma_addr_t ucd_prdt_dma_addr;
186 struct scsi_cmnd *cmd;
191 u8 lun; /* UPIU LUN id field is only 8-bit wide */
193 ktime_t issue_time_stamp;
194 u64 issue_time_stamp_local_clock;
195 ktime_t compl_time_stamp;
196 u64 compl_time_stamp_local_clock;
197 #ifdef CONFIG_SCSI_UFS_CRYPTO
206 * struct ufs_query_req - parameters for building a query request
207 * @query_func: UPIU header query function
208 * @upiu_req: the query request data
210 struct ufs_query_req {
212 struct utp_upiu_query upiu_req;
216 * struct ufs_query_resp - UPIU QUERY
217 * @response: device response code
218 * @upiu_res: query response data
220 struct ufs_query_res {
221 struct utp_upiu_query upiu_res;
225 * struct ufs_query - holds relevant data structures for query request
226 * @request: request upiu and function
227 * @descriptor: buffer for sending/receiving descriptor
228 * @response: response upiu and response
231 struct ufs_query_req request;
233 struct ufs_query_res response;
237 * struct ufs_dev_cmd - all assosiated fields with device management commands
238 * @type: device management command type - Query, NOP OUT
239 * @lock: lock to allow one command at a time
240 * @complete: internal commands completion
241 * @query: Device management query information
244 enum dev_cmd_type type;
246 struct completion *complete;
247 struct ufs_query query;
251 * struct ufs_clk_info - UFS clock related info
252 * @list: list headed by hba->clk_list_head
255 * @max_freq: maximum frequency supported by the clock
256 * @min_freq: min frequency that can be used for clock scaling
257 * @curr_freq: indicates the current frequency that it is set to
258 * @keep_link_active: indicates that the clk should not be disabled if
260 * @enabled: variable to check against multiple enable/disable
262 struct ufs_clk_info {
263 struct list_head list;
269 bool keep_link_active;
273 enum ufs_notify_change_status {
278 struct ufs_pa_layer_attr {
288 struct ufs_pwr_mode_info {
290 struct ufs_pa_layer_attr info;
294 * struct ufs_hba_variant_ops - variant specific callbacks
295 * @name: variant name
296 * @init: called when the driver is initialized
297 * @exit: called to cleanup everything done in init
298 * @get_ufs_hci_version: called to get UFS HCI version
299 * @clk_scale_notify: notifies that clks are scaled up/down
300 * @setup_clocks: called before touching any of the controller registers
301 * @hce_enable_notify: called before and after HCE enable bit is set to allow
302 * variant specific Uni-Pro initialization.
303 * @link_startup_notify: called before and after Link startup is carried out
304 * to allow variant specific Uni-Pro initialization.
305 * @pwr_change_notify: called before and after a power mode change
306 * is carried out to allow vendor spesific capabilities
308 * @setup_xfer_req: called before any transfer request is issued
310 * @setup_task_mgmt: called before any task management request is issued
312 * @hibern8_notify: called around hibern8 enter/exit
313 * @apply_dev_quirks: called to apply device specific quirks
314 * @fixup_dev_quirks: called to modify device specific quirks
315 * @suspend: called during host controller PM callback
316 * @resume: called during host controller PM callback
317 * @dbg_register_dump: used to dump controller debug information
318 * @phy_initialization: used to initialize phys
319 * @device_reset: called to issue a reset pulse on the UFS device
320 * @config_scaling_param: called to configure clock scaling parameters
321 * @program_key: program or evict an inline encryption key
322 * @event_notify: called to notify important events
323 * @reinit_notify: called to notify reinit of UFSHCD during max gear switch
324 * @mcq_config_resource: called to configure MCQ platform resources
325 * @get_hba_mac: called to get vendor specific mac value, mandatory for mcq mode
326 * @op_runtime_config: called to config Operation and runtime regs Pointers
327 * @get_outstanding_cqs: called to get outstanding completion queues
328 * @config_esi: called to config Event Specific Interrupt
330 struct ufs_hba_variant_ops {
332 int (*init)(struct ufs_hba *);
333 void (*exit)(struct ufs_hba *);
334 u32 (*get_ufs_hci_version)(struct ufs_hba *);
335 int (*clk_scale_notify)(struct ufs_hba *, bool,
336 enum ufs_notify_change_status);
337 int (*setup_clocks)(struct ufs_hba *, bool,
338 enum ufs_notify_change_status);
339 int (*hce_enable_notify)(struct ufs_hba *,
340 enum ufs_notify_change_status);
341 int (*link_startup_notify)(struct ufs_hba *,
342 enum ufs_notify_change_status);
343 int (*pwr_change_notify)(struct ufs_hba *,
344 enum ufs_notify_change_status status,
345 struct ufs_pa_layer_attr *,
346 struct ufs_pa_layer_attr *);
347 void (*setup_xfer_req)(struct ufs_hba *hba, int tag,
349 void (*setup_task_mgmt)(struct ufs_hba *, int, u8);
350 void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
351 enum ufs_notify_change_status);
352 int (*apply_dev_quirks)(struct ufs_hba *hba);
353 void (*fixup_dev_quirks)(struct ufs_hba *hba);
354 int (*suspend)(struct ufs_hba *, enum ufs_pm_op,
355 enum ufs_notify_change_status);
356 int (*resume)(struct ufs_hba *, enum ufs_pm_op);
357 void (*dbg_register_dump)(struct ufs_hba *hba);
358 int (*phy_initialization)(struct ufs_hba *);
359 int (*device_reset)(struct ufs_hba *hba);
360 void (*config_scaling_param)(struct ufs_hba *hba,
361 struct devfreq_dev_profile *profile,
362 struct devfreq_simple_ondemand_data *data);
363 int (*program_key)(struct ufs_hba *hba,
364 const union ufs_crypto_cfg_entry *cfg, int slot);
365 void (*event_notify)(struct ufs_hba *hba,
366 enum ufs_event_type evt, void *data);
367 void (*reinit_notify)(struct ufs_hba *);
368 int (*mcq_config_resource)(struct ufs_hba *hba);
369 int (*get_hba_mac)(struct ufs_hba *hba);
370 int (*op_runtime_config)(struct ufs_hba *hba);
371 int (*get_outstanding_cqs)(struct ufs_hba *hba,
372 unsigned long *ocqs);
373 int (*config_esi)(struct ufs_hba *hba);
376 /* clock gating state */
377 enum clk_gating_state {
385 * struct ufs_clk_gating - UFS clock gating related info
386 * @gate_work: worker to turn off clocks after some delay as specified in
388 * @ungate_work: worker to turn on clocks that will be used in case of
390 * @state: the current clocks state
391 * @delay_ms: gating delay in ms
392 * @is_suspended: clk gating is suspended when set to 1 which can be used
393 * during suspend/resume
394 * @delay_attr: sysfs attribute to control delay_attr
395 * @enable_attr: sysfs attribute to enable/disable clock gating
396 * @is_enabled: Indicates the current status of clock gating
397 * @is_initialized: Indicates whether clock gating is initialized or not
398 * @active_reqs: number of requests that are pending and should be waited for
399 * completion before gating clocks.
400 * @clk_gating_workq: workqueue for clock gating work.
402 struct ufs_clk_gating {
403 struct delayed_work gate_work;
404 struct work_struct ungate_work;
405 enum clk_gating_state state;
406 unsigned long delay_ms;
408 struct device_attribute delay_attr;
409 struct device_attribute enable_attr;
413 struct workqueue_struct *clk_gating_workq;
417 * struct ufs_clk_scaling - UFS clock scaling related data
418 * @active_reqs: number of requests that are pending. If this is zero when
419 * devfreq ->target() function is called then schedule "suspend_work" to
421 * @tot_busy_t: Total busy time in current polling window
422 * @window_start_t: Start time (in jiffies) of the current polling window
423 * @busy_start_t: Start time of current busy period
424 * @enable_attr: sysfs attribute to enable/disable clock scaling
425 * @saved_pwr_info: UFS power mode may also be changed during scaling and this
426 * one keeps track of previous power mode.
427 * @workq: workqueue to schedule devfreq suspend/resume work
428 * @suspend_work: worker to suspend devfreq
429 * @resume_work: worker to resume devfreq
430 * @min_gear: lowest HS gear to scale down to
431 * @is_enabled: tracks if scaling is currently enabled or not, controlled by
432 * clkscale_enable sysfs node
433 * @is_allowed: tracks if scaling is currently allowed or not, used to block
434 * clock scaling which is not invoked from devfreq governor
435 * @is_initialized: Indicates whether clock scaling is initialized or not
436 * @is_busy_started: tracks if busy period has started or not
437 * @is_suspended: tracks if devfreq is suspended or not
439 struct ufs_clk_scaling {
441 unsigned long tot_busy_t;
442 ktime_t window_start_t;
443 ktime_t busy_start_t;
444 struct device_attribute enable_attr;
445 struct ufs_pa_layer_attr saved_pwr_info;
446 struct workqueue_struct *workq;
447 struct work_struct suspend_work;
448 struct work_struct resume_work;
453 bool is_busy_started;
457 #define UFS_EVENT_HIST_LENGTH 8
459 * struct ufs_event_hist - keeps history of errors
460 * @pos: index to indicate cyclic buffer position
461 * @val: cyclic buffer for registers value
462 * @tstamp: cyclic buffer for time stamp
463 * @cnt: error counter
465 struct ufs_event_hist {
467 u32 val[UFS_EVENT_HIST_LENGTH];
468 u64 tstamp[UFS_EVENT_HIST_LENGTH];
469 unsigned long long cnt;
473 * struct ufs_stats - keeps usage/err statistics
474 * @last_intr_status: record the last interrupt status.
475 * @last_intr_ts: record the last interrupt timestamp.
476 * @hibern8_exit_cnt: Counter to keep track of number of exits,
477 * reset this after link-startup.
478 * @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
479 * Clear after the first successful command completion.
480 * @event: array with event history.
483 u32 last_intr_status;
486 u32 hibern8_exit_cnt;
487 u64 last_hibern8_exit_tstamp;
488 struct ufs_event_hist event[UFS_EVT_CNT];
492 * enum ufshcd_state - UFS host controller state
493 * @UFSHCD_STATE_RESET: Link is not operational. Postpone SCSI command
495 * @UFSHCD_STATE_OPERATIONAL: The host controller is operational and can process
497 * @UFSHCD_STATE_EH_SCHEDULED_NON_FATAL: The error handler has been scheduled.
498 * SCSI commands may be submitted to the controller.
499 * @UFSHCD_STATE_EH_SCHEDULED_FATAL: The error handler has been scheduled. Fail
500 * newly submitted SCSI commands with error code DID_BAD_TARGET.
501 * @UFSHCD_STATE_ERROR: An unrecoverable error occurred, e.g. link recovery
502 * failed. Fail all SCSI commands with error code DID_ERROR.
506 UFSHCD_STATE_OPERATIONAL,
507 UFSHCD_STATE_EH_SCHEDULED_NON_FATAL,
508 UFSHCD_STATE_EH_SCHEDULED_FATAL,
513 /* Interrupt aggregation support is broken */
514 UFSHCD_QUIRK_BROKEN_INTR_AGGR = 1 << 0,
517 * delay before each dme command is required as the unipro
518 * layer has shown instabilities
520 UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS = 1 << 1,
523 * If UFS host controller is having issue in processing LCC (Line
524 * Control Command) coming from device then enable this quirk.
525 * When this quirk is enabled, host controller driver should disable
526 * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
527 * attribute of device to 0).
529 UFSHCD_QUIRK_BROKEN_LCC = 1 << 2,
532 * The attribute PA_RXHSUNTERMCAP specifies whether or not the
533 * inbound Link supports unterminated line in HS mode. Setting this
534 * attribute to 1 fixes moving to HS gear.
536 UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP = 1 << 3,
539 * This quirk needs to be enabled if the host controller only allows
540 * accessing the peer dme attributes in AUTO mode (FAST AUTO or
543 UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE = 1 << 4,
546 * This quirk needs to be enabled if the host controller doesn't
547 * advertise the correct version in UFS_VER register. If this quirk
548 * is enabled, standard UFS host driver will call the vendor specific
549 * ops (get_ufs_hci_version) to get the correct version.
551 UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5,
554 * Clear handling for transfer/task request list is just opposite.
556 UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6,
559 * This quirk needs to be enabled if host controller doesn't allow
560 * that the interrupt aggregation timer and counter are reset by s/w.
562 UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7,
565 * This quirks needs to be enabled if host controller cannot be
566 * enabled via HCE register.
568 UFSHCI_QUIRK_BROKEN_HCE = 1 << 8,
571 * This quirk needs to be enabled if the host controller regards
572 * resolution of the values of PRDTO and PRDTL in UTRD as byte.
574 UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9,
577 * This quirk needs to be enabled if the host controller reports
578 * OCS FATAL ERROR with device error through sense data
580 UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10,
583 * This quirk needs to be enabled if the host controller has
584 * auto-hibernate capability but it doesn't work.
586 UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11,
589 * This quirk needs to disable manual flush for write booster
591 UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12,
594 * This quirk needs to disable unipro timeout values
595 * before power mode change
597 UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13,
600 * Align DMA SG entries on a 4 KiB boundary.
602 UFSHCD_QUIRK_4KB_DMA_ALIGNMENT = 1 << 14,
605 * This quirk needs to be enabled if the host controller does not
606 * support UIC command
608 UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15,
611 * This quirk needs to be enabled if the host controller cannot
612 * support physical host configuration.
614 UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16,
617 * This quirk needs to be enabled if the host controller has
618 * 64-bit addressing supported capability but it doesn't work.
620 UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS = 1 << 17,
623 * This quirk needs to be enabled if the host controller has
624 * auto-hibernate capability but it's FASTAUTO only.
626 UFSHCD_QUIRK_HIBERN_FASTAUTO = 1 << 18,
629 * This quirk needs to be enabled if the host controller needs
630 * to reinit the device after switching to maximum gear.
632 UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH = 1 << 19,
635 * Some host raises interrupt (per queue) in addition to
636 * CQES (traditional) when ESI is disabled.
637 * Enable this quirk will disable CQES and use per queue interrupt.
639 UFSHCD_QUIRK_MCQ_BROKEN_INTR = 1 << 20,
642 * Some host does not implement SQ Run Time Command (SQRTC) register
643 * thus need this quirk to skip related flow.
645 UFSHCD_QUIRK_MCQ_BROKEN_RTC = 1 << 21,
649 /* Allow dynamic clk gating */
650 UFSHCD_CAP_CLK_GATING = 1 << 0,
652 /* Allow hiberb8 with clk gating */
653 UFSHCD_CAP_HIBERN8_WITH_CLK_GATING = 1 << 1,
655 /* Allow dynamic clk scaling */
656 UFSHCD_CAP_CLK_SCALING = 1 << 2,
658 /* Allow auto bkops to enabled during runtime suspend */
659 UFSHCD_CAP_AUTO_BKOPS_SUSPEND = 1 << 3,
662 * This capability allows host controller driver to use the UFS HCI's
663 * interrupt aggregation capability.
664 * CAUTION: Enabling this might reduce overall UFS throughput.
666 UFSHCD_CAP_INTR_AGGR = 1 << 4,
669 * This capability allows the device auto-bkops to be always enabled
670 * except during suspend (both runtime and suspend).
671 * Enabling this capability means that device will always be allowed
672 * to do background operation when it's active but it might degrade
673 * the performance of ongoing read/write operations.
675 UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND = 1 << 5,
678 * This capability allows host controller driver to automatically
679 * enable runtime power management by itself instead of waiting
680 * for userspace to control the power management.
682 UFSHCD_CAP_RPM_AUTOSUSPEND = 1 << 6,
685 * This capability allows the host controller driver to turn-on
686 * WriteBooster, if the underlying device supports it and is
687 * provisioned to be used. This would increase the write performance.
689 UFSHCD_CAP_WB_EN = 1 << 7,
692 * This capability allows the host controller driver to use the
693 * inline crypto engine, if it is present
695 UFSHCD_CAP_CRYPTO = 1 << 8,
698 * This capability allows the controller regulators to be put into
699 * lpm mode aggressively during clock gating.
700 * This would increase power savings.
702 UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9,
705 * This capability allows the host controller driver to use DeepSleep,
706 * if it is supported by the UFS device. The host controller driver must
707 * support device hardware reset via the hba->device_reset() callback,
708 * in order to exit DeepSleep state.
710 UFSHCD_CAP_DEEPSLEEP = 1 << 10,
713 * This capability allows the host controller driver to use temperature
714 * notification if it is supported by the UFS device.
716 UFSHCD_CAP_TEMP_NOTIF = 1 << 11,
719 * Enable WriteBooster when scaling up the clock and disable
720 * WriteBooster when scaling the clock down.
722 UFSHCD_CAP_WB_WITH_CLK_SCALING = 1 << 12,
725 struct ufs_hba_variant_params {
726 struct devfreq_dev_profile devfreq_profile;
727 struct devfreq_simple_ondemand_data ondemand_data;
728 u16 hba_enable_delay_us;
729 u32 wb_flush_threshold;
732 struct ufs_hba_monitor {
733 unsigned long chunk_size;
735 unsigned long nr_sec_rw[2];
736 ktime_t total_busy[2];
738 unsigned long nr_req[2];
745 ktime_t busy_start_ts[2];
752 * struct ufshcd_res_info_t - MCQ related resource regions
754 * @name: resource name
755 * @resource: pointer to resource region
756 * @base: register base address
758 struct ufshcd_res_info {
760 struct resource *resource;
776 * struct ufshcd_mcq_opr_info_t - Operation and Runtime registers
778 * @offset: Doorbell Address Offset
779 * @stride: Steps proportional to queue [0...31]
780 * @base: base address
782 struct ufshcd_mcq_opr_info_t {
783 unsigned long offset;
784 unsigned long stride;
788 enum ufshcd_mcq_opr {
797 * struct ufs_hba - per adapter private structure
798 * @mmio_base: UFSHCI base register address
799 * @ucdl_base_addr: UFS Command Descriptor base address
800 * @utrdl_base_addr: UTP Transfer Request Descriptor base address
801 * @utmrdl_base_addr: UTP Task Management Descriptor base address
802 * @ucdl_dma_addr: UFS Command Descriptor DMA address
803 * @utrdl_dma_addr: UTRDL DMA address
804 * @utmrdl_dma_addr: UTMRDL DMA address
805 * @host: Scsi_Host instance of the driver
806 * @dev: device handle
807 * @ufs_device_wlun: WLUN that controls the entire UFS device.
808 * @hwmon_device: device instance registered with the hwmon core.
809 * @curr_dev_pwr_mode: active UFS device power mode.
810 * @uic_link_state: active state of the link to the UFS device.
811 * @rpm_lvl: desired UFS power management level during runtime PM.
812 * @spm_lvl: desired UFS power management level during system PM.
813 * @pm_op_in_progress: whether or not a PM operation is in progress.
814 * @ahit: value of Auto-Hibernate Idle Timer register.
815 * @lrb: local reference block
816 * @outstanding_tasks: Bits representing outstanding task requests
817 * @outstanding_lock: Protects @outstanding_reqs.
818 * @outstanding_reqs: Bits representing outstanding transfer requests
819 * @capabilities: UFS Controller Capabilities
820 * @mcq_capabilities: UFS Multi Circular Queue capabilities
821 * @nutrs: Transfer Request Queue depth supported by controller
822 * @nutmrs: Task Management Queue depth supported by controller
823 * @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock.
824 * @ufs_version: UFS Version to which controller complies
825 * @vops: pointer to variant specific operations
826 * @vps: pointer to variant specific parameters
827 * @priv: pointer to variant specific private data
828 * @sg_entry_size: size of struct ufshcd_sg_entry (may include variant fields)
829 * @irq: Irq number of the controller
830 * @is_irq_enabled: whether or not the UFS controller interrupt is enabled.
831 * @dev_ref_clk_freq: reference clock frequency
832 * @quirks: bitmask with information about deviations from the UFSHCI standard.
833 * @dev_quirks: bitmask with information about deviations from the UFS standard.
834 * @tmf_tag_set: TMF tag set.
835 * @tmf_queue: Used to allocate TMF tags.
836 * @tmf_rqs: array with pointers to TMF requests while these are in progress.
837 * @active_uic_cmd: handle of active UIC command
838 * @uic_cmd_mutex: mutex for UIC command
839 * @uic_async_done: completion used during UIC processing
840 * @ufshcd_state: UFSHCD state
841 * @eh_flags: Error handling flags
842 * @intr_mask: Interrupt Mask Bits
843 * @ee_ctrl_mask: Exception event control mask
844 * @ee_drv_mask: Exception event mask for driver
845 * @ee_usr_mask: Exception event mask for user (set via debugfs)
846 * @ee_ctrl_mutex: Used to serialize exception event information.
847 * @is_powered: flag to check if HBA is powered
848 * @shutting_down: flag to check if shutdown has been invoked
849 * @host_sem: semaphore used to serialize concurrent contexts
850 * @eh_wq: Workqueue that eh_work works on
851 * @eh_work: Worker to handle UFS errors that require s/w attention
852 * @eeh_work: Worker to handle exception events
853 * @errors: HBA errors
854 * @uic_error: UFS interconnect layer error status
855 * @saved_err: sticky error mask
856 * @saved_uic_err: sticky UIC error mask
857 * @ufs_stats: various error counters
858 * @force_reset: flag to force eh_work perform a full reset
859 * @force_pmc: flag to force a power mode change
860 * @silence_err_logs: flag to silence error logs
861 * @dev_cmd: ufs device management command information
862 * @last_dme_cmd_tstamp: time stamp of the last completed DME command
863 * @nop_out_timeout: NOP OUT timeout value
864 * @dev_info: information about the UFS device
865 * @auto_bkops_enabled: to track whether bkops is enabled in device
866 * @vreg_info: UFS device voltage regulator information
867 * @clk_list_head: UFS host controller clocks list node head
868 * @req_abort_count: number of times ufshcd_abort() has been called
869 * @lanes_per_direction: number of lanes per data direction between the UFS
870 * controller and the UFS device.
871 * @pwr_info: holds current power mode
872 * @max_pwr_info: keeps the device max valid pwm
873 * @clk_gating: information related to clock gating
874 * @caps: bitmask with information about UFS controller capabilities
875 * @devfreq: frequency scaling information owned by the devfreq core
876 * @clk_scaling: frequency scaling information owned by the UFS driver
877 * @system_suspending: system suspend has been started and system resume has
879 * @is_sys_suspended: UFS device has been suspended because of system suspend
880 * @urgent_bkops_lvl: keeps track of urgent bkops level for device
881 * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
882 * device is known or not.
883 * @wb_mutex: used to serialize devfreq and sysfs write booster toggling
884 * @clk_scaling_lock: used to serialize device commands and clock scaling
885 * @desc_size: descriptor sizes reported by device
886 * @scsi_block_reqs_cnt: reference counting for scsi block requests
887 * @bsg_dev: struct device associated with the BSG queue
888 * @bsg_queue: BSG queue associated with the UFS controller
889 * @rpm_dev_flush_recheck_work: used to suspend from RPM (runtime power
890 * management) after the UFS device has finished a WriteBooster buffer
891 * flush or auto BKOP.
892 * @monitor: statistics about UFS commands
893 * @crypto_capabilities: Content of crypto capabilities register (0x100)
894 * @crypto_cap_array: Array of crypto capabilities
895 * @crypto_cfg_register: Start of the crypto cfg array
896 * @crypto_profile: the crypto profile of this hba (if applicable)
897 * @debugfs_root: UFS controller debugfs root directory
898 * @debugfs_ee_work: used to restore ee_ctrl_mask after a delay
899 * @debugfs_ee_rate_limit_ms: user configurable delay after which to restore
901 * @luns_avail: number of regular and well known LUNs supported by the UFS
903 * @nr_hw_queues: number of hardware queues configured
904 * @nr_queues: number of Queues of different queue types
905 * @complete_put: whether or not to call ufshcd_rpm_put() from inside
906 * ufshcd_resume_complete()
907 * @ext_iid_sup: is EXT_IID is supported by UFSHC
908 * @mcq_sup: is mcq supported by UFSHC
909 * @mcq_enabled: is mcq ready to accept requests
910 * @res: array of resource info of MCQ registers
911 * @mcq_base: Multi circular queue registers base address
912 * @uhq: array of supported hardware queues
913 * @dev_cmd_queue: Queue for issuing device management commands
916 void __iomem *mmio_base;
918 /* Virtual memory reference */
919 struct utp_transfer_cmd_desc *ucdl_base_addr;
920 struct utp_transfer_req_desc *utrdl_base_addr;
921 struct utp_task_req_desc *utmrdl_base_addr;
923 /* DMA memory reference */
924 dma_addr_t ucdl_dma_addr;
925 dma_addr_t utrdl_dma_addr;
926 dma_addr_t utmrdl_dma_addr;
928 struct Scsi_Host *host;
930 struct scsi_device *ufs_device_wlun;
932 #ifdef CONFIG_SCSI_UFS_HWMON
933 struct device *hwmon_device;
936 enum ufs_dev_pwr_mode curr_dev_pwr_mode;
937 enum uic_link_state uic_link_state;
938 /* Desired UFS power management level during runtime PM */
939 enum ufs_pm_level rpm_lvl;
940 /* Desired UFS power management level during system PM */
941 enum ufs_pm_level spm_lvl;
942 int pm_op_in_progress;
944 /* Auto-Hibernate Idle Timer register value */
947 struct ufshcd_lrb *lrb;
949 unsigned long outstanding_tasks;
950 spinlock_t outstanding_lock;
951 unsigned long outstanding_reqs;
955 u32 mcq_capabilities;
959 const struct ufs_hba_variant_ops *vops;
960 struct ufs_hba_variant_params *vps;
962 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
963 size_t sg_entry_size;
967 enum ufs_ref_clk_freq dev_ref_clk_freq;
969 unsigned int quirks; /* Deviations from standard UFSHCI spec. */
971 /* Device deviations from standard UFS device spec. */
972 unsigned int dev_quirks;
974 struct blk_mq_tag_set tmf_tag_set;
975 struct request_queue *tmf_queue;
976 struct request **tmf_rqs;
978 struct uic_command *active_uic_cmd;
979 struct mutex uic_cmd_mutex;
980 struct completion *uic_async_done;
982 enum ufshcd_state ufshcd_state;
988 struct mutex ee_ctrl_mutex;
991 struct semaphore host_sem;
994 struct workqueue_struct *eh_wq;
995 struct work_struct eh_work;
996 struct work_struct eeh_work;
1003 struct ufs_stats ufs_stats;
1006 bool silence_err_logs;
1008 /* Device management request data */
1009 struct ufs_dev_cmd dev_cmd;
1010 ktime_t last_dme_cmd_tstamp;
1011 int nop_out_timeout;
1013 /* Keeps information of the UFS device connected to this host */
1014 struct ufs_dev_info dev_info;
1015 bool auto_bkops_enabled;
1016 struct ufs_vreg_info vreg_info;
1017 struct list_head clk_list_head;
1019 /* Number of requests aborts */
1020 int req_abort_count;
1022 /* Number of lanes available (1 or 2) for Rx/Tx */
1023 u32 lanes_per_direction;
1024 struct ufs_pa_layer_attr pwr_info;
1025 struct ufs_pwr_mode_info max_pwr_info;
1027 struct ufs_clk_gating clk_gating;
1028 /* Control to enable/disable host capabilities */
1031 struct devfreq *devfreq;
1032 struct ufs_clk_scaling clk_scaling;
1033 bool system_suspending;
1034 bool is_sys_suspended;
1036 enum bkops_status urgent_bkops_lvl;
1037 bool is_urgent_bkops_lvl_checked;
1039 struct mutex wb_mutex;
1040 struct rw_semaphore clk_scaling_lock;
1041 atomic_t scsi_block_reqs_cnt;
1043 struct device bsg_dev;
1044 struct request_queue *bsg_queue;
1045 struct delayed_work rpm_dev_flush_recheck_work;
1047 struct ufs_hba_monitor monitor;
1049 #ifdef CONFIG_SCSI_UFS_CRYPTO
1050 union ufs_crypto_capabilities crypto_capabilities;
1051 union ufs_crypto_cap_entry *crypto_cap_array;
1052 u32 crypto_cfg_register;
1053 struct blk_crypto_profile crypto_profile;
1055 #ifdef CONFIG_DEBUG_FS
1056 struct dentry *debugfs_root;
1057 struct delayed_work debugfs_ee_work;
1058 u32 debugfs_ee_rate_limit_ms;
1061 unsigned int nr_hw_queues;
1062 unsigned int nr_queues[HCTX_MAX_TYPES];
1065 bool scsi_host_added;
1068 struct ufshcd_res_info res[RES_MAX];
1069 void __iomem *mcq_base;
1070 struct ufs_hw_queue *uhq;
1071 struct ufs_hw_queue *dev_cmd_queue;
1072 struct ufshcd_mcq_opr_info_t mcq_opr[OPR_MAX];
1076 * struct ufs_hw_queue - per hardware queue structure
1077 * @mcq_sq_head: base address of submission queue head pointer
1078 * @mcq_sq_tail: base address of submission queue tail pointer
1079 * @mcq_cq_head: base address of completion queue head pointer
1080 * @mcq_cq_tail: base address of completion queue tail pointer
1081 * @sqe_base_addr: submission queue entry base address
1082 * @sqe_dma_addr: submission queue dma address
1083 * @cqe_base_addr: completion queue base address
1084 * @cqe_dma_addr: completion queue dma address
1085 * @max_entries: max number of slots in this hardware queue
1086 * @id: hardware queue ID
1087 * @sq_tp_slot: current slot to which SQ tail pointer is pointing
1088 * @sq_lock: serialize submission queue access
1089 * @cq_tail_slot: current slot to which CQ tail pointer is pointing
1090 * @cq_head_slot: current slot to which CQ head pointer is pointing
1091 * @cq_lock: Synchronize between multiple polling instances
1092 * @sq_mutex: prevent submission queue concurrent access
1094 struct ufs_hw_queue {
1095 void __iomem *mcq_sq_head;
1096 void __iomem *mcq_sq_tail;
1097 void __iomem *mcq_cq_head;
1098 void __iomem *mcq_cq_tail;
1100 struct utp_transfer_req_desc *sqe_base_addr;
1101 dma_addr_t sqe_dma_addr;
1102 struct cq_entry *cqe_base_addr;
1103 dma_addr_t cqe_dma_addr;
1111 /* prevent concurrent access to submission queue */
1112 struct mutex sq_mutex;
1115 static inline bool is_mcq_enabled(struct ufs_hba *hba)
1117 return hba->mcq_enabled;
1120 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
1121 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
1123 return hba->sg_entry_size;
1126 static inline void ufshcd_set_sg_entry_size(struct ufs_hba *hba, size_t sg_entry_size)
1128 WARN_ON_ONCE(sg_entry_size < sizeof(struct ufshcd_sg_entry));
1129 hba->sg_entry_size = sg_entry_size;
1132 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
1134 return sizeof(struct ufshcd_sg_entry);
1137 #define ufshcd_set_sg_entry_size(hba, sg_entry_size) \
1138 ({ (void)(hba); BUILD_BUG_ON(sg_entry_size != sizeof(struct ufshcd_sg_entry)); })
1141 static inline size_t ufshcd_get_ucd_size(const struct ufs_hba *hba)
1143 return sizeof(struct utp_transfer_cmd_desc) + SG_ALL * ufshcd_sg_entry_size(hba);
1146 /* Returns true if clocks can be gated. Otherwise false */
1147 static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
1149 return hba->caps & UFSHCD_CAP_CLK_GATING;
1151 static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba)
1153 return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
1155 static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba)
1157 return hba->caps & UFSHCD_CAP_CLK_SCALING;
1159 static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
1161 return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
1163 static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba)
1165 return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND;
1168 static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
1170 return (hba->caps & UFSHCD_CAP_INTR_AGGR) &&
1171 !(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR);
1174 static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba)
1176 return !!(ufshcd_is_link_hibern8(hba) &&
1177 (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE));
1180 static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
1182 return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&
1183 !(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8);
1186 static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
1188 return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit);
1191 static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
1193 return hba->caps & UFSHCD_CAP_WB_EN;
1196 static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba)
1198 return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING;
1201 #define ufsmcq_writel(hba, val, reg) \
1202 writel((val), (hba)->mcq_base + (reg))
1203 #define ufsmcq_readl(hba, reg) \
1204 readl((hba)->mcq_base + (reg))
1206 #define ufsmcq_writelx(hba, val, reg) \
1207 writel_relaxed((val), (hba)->mcq_base + (reg))
1208 #define ufsmcq_readlx(hba, reg) \
1209 readl_relaxed((hba)->mcq_base + (reg))
1211 #define ufshcd_writel(hba, val, reg) \
1212 writel((val), (hba)->mmio_base + (reg))
1213 #define ufshcd_readl(hba, reg) \
1214 readl((hba)->mmio_base + (reg))
1217 * ufshcd_rmwl - perform read/modify/write for a controller register
1218 * @hba: per adapter instance
1219 * @mask: mask to apply on read value
1220 * @val: actual value to write
1221 * @reg: register address
1223 static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
1227 tmp = ufshcd_readl(hba, reg);
1229 tmp |= (val & mask);
1230 ufshcd_writel(hba, tmp, reg);
1233 int ufshcd_alloc_host(struct device *, struct ufs_hba **);
1234 void ufshcd_dealloc_host(struct ufs_hba *);
1235 int ufshcd_hba_enable(struct ufs_hba *hba);
1236 int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int);
1237 int ufshcd_link_recovery(struct ufs_hba *hba);
1238 int ufshcd_make_hba_operational(struct ufs_hba *hba);
1239 void ufshcd_remove(struct ufs_hba *);
1240 int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
1241 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
1242 void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
1243 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
1244 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
1245 void ufshcd_hba_stop(struct ufs_hba *hba);
1246 void ufshcd_schedule_eh_work(struct ufs_hba *hba);
1247 void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 max_active_cmds);
1248 u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i);
1249 void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i);
1250 unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
1251 struct ufs_hw_queue *hwq);
1252 void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba);
1253 void ufshcd_mcq_enable_esi(struct ufs_hba *hba);
1254 void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg);
1257 * ufshcd_set_variant - set variant specific data to the hba
1258 * @hba: per adapter instance
1259 * @variant: pointer to variant specific data
1261 static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
1264 hba->priv = variant;
1268 * ufshcd_get_variant - get variant specific data from the hba
1269 * @hba: per adapter instance
1271 static inline void *ufshcd_get_variant(struct ufs_hba *hba)
1278 extern int ufshcd_runtime_suspend(struct device *dev);
1279 extern int ufshcd_runtime_resume(struct device *dev);
1281 #ifdef CONFIG_PM_SLEEP
1282 extern int ufshcd_system_suspend(struct device *dev);
1283 extern int ufshcd_system_resume(struct device *dev);
1284 extern int ufshcd_system_freeze(struct device *dev);
1285 extern int ufshcd_system_thaw(struct device *dev);
1286 extern int ufshcd_system_restore(struct device *dev);
1289 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
1292 extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
1293 u8 attr_set, u32 mib_val, u8 peer);
1294 extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
1295 u32 *mib_val, u8 peer);
1296 extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
1297 struct ufs_pa_layer_attr *desired_pwr_mode);
1298 extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode);
1300 /* UIC command interfaces for DME primitives */
1303 #define ATTR_SET_NOR 0 /* NORMAL */
1304 #define ATTR_SET_ST 1 /* STATIC */
1306 static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
1309 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1310 mib_val, DME_LOCAL);
1313 static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
1316 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1317 mib_val, DME_LOCAL);
1320 static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
1323 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1327 static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
1330 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1334 static inline int ufshcd_dme_get(struct ufs_hba *hba,
1335 u32 attr_sel, u32 *mib_val)
1337 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
1340 static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
1341 u32 attr_sel, u32 *mib_val)
1343 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
1346 static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info)
1348 return (pwr_info->pwr_rx == FAST_MODE ||
1349 pwr_info->pwr_rx == FASTAUTO_MODE) &&
1350 (pwr_info->pwr_tx == FAST_MODE ||
1351 pwr_info->pwr_tx == FASTAUTO_MODE);
1354 static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
1356 return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
1359 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
1360 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
1361 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
1362 const struct ufs_dev_quirk *fixups);
1363 #define SD_ASCII_STD true
1364 #define SD_RAW false
1365 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
1366 u8 **buf, bool ascii);
1368 void ufshcd_hold(struct ufs_hba *hba);
1369 void ufshcd_release(struct ufs_hba *hba);
1371 void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value);
1373 u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba);
1375 int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg);
1377 int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd);
1379 int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *req_upiu,
1380 struct utp_upiu_req *rsp_upiu, struct ufs_ehs *ehs_req,
1381 struct ufs_ehs *ehs_rsp, int sg_cnt,
1382 struct scatterlist *sg_list, enum dma_data_direction dir);
1383 int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
1384 int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable);
1385 int ufshcd_suspend_prepare(struct device *dev);
1386 int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
1387 void ufshcd_resume_complete(struct device *dev);
1388 bool ufshcd_is_hba_active(struct ufs_hba *hba);
1390 /* Wrapper functions for safely calling variant operations */
1391 static inline int ufshcd_vops_init(struct ufs_hba *hba)
1393 if (hba->vops && hba->vops->init)
1394 return hba->vops->init(hba);
1399 static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
1401 if (hba->vops && hba->vops->phy_initialization)
1402 return hba->vops->phy_initialization(hba);
1407 extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
1409 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
1410 const char *prefix);
1412 int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask);
1413 int ufshcd_write_ee_control(struct ufs_hba *hba);
1414 int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask,
1415 const u16 *other_mask, u16 set, u16 clr);
1417 #endif /* End of Header */