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/pm_runtime.h>
20 #include <scsi/scsi_device.h>
21 #include <ufs/unipro.h>
23 #include <ufs/ufs_quirks.h>
24 #include <ufs/ufshci.h>
26 #define UFSHCD "ufshcd"
31 DEV_CMD_TYPE_NOP = 0x0,
32 DEV_CMD_TYPE_QUERY = 0x1,
36 /* uic specific errors */
44 UFS_EVT_AUTO_HIBERN8_ERR,
46 UFS_EVT_LINK_STARTUP_FAIL,
61 * struct uic_command - UIC command structure
62 * @command: UIC command
63 * @argument1: UIC command argument 1
64 * @argument2: UIC command argument 2
65 * @argument3: UIC command argument 3
66 * @cmd_active: Indicate if UIC command is outstanding
67 * @done: UIC command completion
75 struct completion done;
78 /* Used to differentiate the power management options */
85 /* Host <-> Device UniPro Link state */
87 UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */
88 UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */
89 UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */
90 UIC_LINK_BROKEN_STATE = 3, /* Link is in broken state */
93 #define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
94 #define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
95 UIC_LINK_ACTIVE_STATE)
96 #define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
97 UIC_LINK_HIBERN8_STATE)
98 #define ufshcd_is_link_broken(hba) ((hba)->uic_link_state == \
99 UIC_LINK_BROKEN_STATE)
100 #define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
101 #define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
102 UIC_LINK_ACTIVE_STATE)
103 #define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
104 UIC_LINK_HIBERN8_STATE)
105 #define ufshcd_set_link_broken(hba) ((hba)->uic_link_state = \
106 UIC_LINK_BROKEN_STATE)
108 #define ufshcd_set_ufs_dev_active(h) \
109 ((h)->curr_dev_pwr_mode = UFS_ACTIVE_PWR_MODE)
110 #define ufshcd_set_ufs_dev_sleep(h) \
111 ((h)->curr_dev_pwr_mode = UFS_SLEEP_PWR_MODE)
112 #define ufshcd_set_ufs_dev_poweroff(h) \
113 ((h)->curr_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE)
114 #define ufshcd_set_ufs_dev_deepsleep(h) \
115 ((h)->curr_dev_pwr_mode = UFS_DEEPSLEEP_PWR_MODE)
116 #define ufshcd_is_ufs_dev_active(h) \
117 ((h)->curr_dev_pwr_mode == UFS_ACTIVE_PWR_MODE)
118 #define ufshcd_is_ufs_dev_sleep(h) \
119 ((h)->curr_dev_pwr_mode == UFS_SLEEP_PWR_MODE)
120 #define ufshcd_is_ufs_dev_poweroff(h) \
121 ((h)->curr_dev_pwr_mode == UFS_POWERDOWN_PWR_MODE)
122 #define ufshcd_is_ufs_dev_deepsleep(h) \
123 ((h)->curr_dev_pwr_mode == UFS_DEEPSLEEP_PWR_MODE)
126 * UFS Power management levels.
127 * Each level is in increasing order of power savings, except DeepSleep
128 * which is lower than PowerDown with power on but not PowerDown with
142 struct ufs_pm_lvl_states {
143 enum ufs_dev_pwr_mode dev_state;
144 enum uic_link_state link_state;
148 * struct ufshcd_lrb - local reference block
149 * @utr_descriptor_ptr: UTRD address of the command
150 * @ucd_req_ptr: UCD address of the command
151 * @ucd_rsp_ptr: Response UPIU address for this command
152 * @ucd_prdt_ptr: PRDT address of the command
153 * @utrd_dma_addr: UTRD dma address for debug
154 * @ucd_prdt_dma_addr: PRDT dma address for debug
155 * @ucd_rsp_dma_addr: UPIU response dma address for debug
156 * @ucd_req_dma_addr: UPIU request dma address for debug
157 * @cmd: pointer to SCSI command
158 * @scsi_status: SCSI status of the command
159 * @command_type: SCSI, UFS, Query.
160 * @task_tag: Task tag of the command
161 * @lun: LUN of the command
162 * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
163 * @issue_time_stamp: time stamp for debug purposes (CLOCK_MONOTONIC)
164 * @issue_time_stamp_local_clock: time stamp for debug purposes (local_clock)
165 * @compl_time_stamp: time stamp for statistics (CLOCK_MONOTONIC)
166 * @compl_time_stamp_local_clock: time stamp for debug purposes (local_clock)
167 * @crypto_key_slot: the key slot to use for inline crypto (-1 if none)
168 * @data_unit_num: the data unit number for the first block for inline crypto
169 * @req_abort_skip: skip request abort task flag
172 struct utp_transfer_req_desc *utr_descriptor_ptr;
173 struct utp_upiu_req *ucd_req_ptr;
174 struct utp_upiu_rsp *ucd_rsp_ptr;
175 struct ufshcd_sg_entry *ucd_prdt_ptr;
177 dma_addr_t utrd_dma_addr;
178 dma_addr_t ucd_req_dma_addr;
179 dma_addr_t ucd_rsp_dma_addr;
180 dma_addr_t ucd_prdt_dma_addr;
182 struct scsi_cmnd *cmd;
187 u8 lun; /* UPIU LUN id field is only 8-bit wide */
189 ktime_t issue_time_stamp;
190 u64 issue_time_stamp_local_clock;
191 ktime_t compl_time_stamp;
192 u64 compl_time_stamp_local_clock;
193 #ifdef CONFIG_SCSI_UFS_CRYPTO
202 * struct ufs_query - holds relevant data structures for query request
203 * @request: request upiu and function
204 * @descriptor: buffer for sending/receiving descriptor
205 * @response: response upiu and response
208 struct ufs_query_req request;
210 struct ufs_query_res response;
214 * struct ufs_dev_cmd - all assosiated fields with device management commands
215 * @type: device management command type - Query, NOP OUT
216 * @lock: lock to allow one command at a time
217 * @complete: internal commands completion
218 * @query: Device management query information
221 enum dev_cmd_type type;
223 struct completion *complete;
224 struct ufs_query query;
228 * struct ufs_clk_info - UFS clock related info
229 * @list: list headed by hba->clk_list_head
232 * @max_freq: maximum frequency supported by the clock
233 * @min_freq: min frequency that can be used for clock scaling
234 * @curr_freq: indicates the current frequency that it is set to
235 * @keep_link_active: indicates that the clk should not be disabled if
237 * @enabled: variable to check against multiple enable/disable
239 struct ufs_clk_info {
240 struct list_head list;
246 bool keep_link_active;
250 enum ufs_notify_change_status {
255 struct ufs_pa_layer_attr {
265 struct ufs_pwr_mode_info {
267 struct ufs_pa_layer_attr info;
271 * struct ufs_hba_variant_ops - variant specific callbacks
272 * @name: variant name
273 * @init: called when the driver is initialized
274 * @exit: called to cleanup everything done in init
275 * @get_ufs_hci_version: called to get UFS HCI version
276 * @clk_scale_notify: notifies that clks are scaled up/down
277 * @setup_clocks: called before touching any of the controller registers
278 * @hce_enable_notify: called before and after HCE enable bit is set to allow
279 * variant specific Uni-Pro initialization.
280 * @link_startup_notify: called before and after Link startup is carried out
281 * to allow variant specific Uni-Pro initialization.
282 * @pwr_change_notify: called before and after a power mode change
283 * is carried out to allow vendor spesific capabilities
285 * @setup_xfer_req: called before any transfer request is issued
287 * @setup_task_mgmt: called before any task management request is issued
289 * @hibern8_notify: called around hibern8 enter/exit
290 * @apply_dev_quirks: called to apply device specific quirks
291 * @fixup_dev_quirks: called to modify device specific quirks
292 * @suspend: called during host controller PM callback
293 * @resume: called during host controller PM callback
294 * @dbg_register_dump: used to dump controller debug information
295 * @phy_initialization: used to initialize phys
296 * @device_reset: called to issue a reset pulse on the UFS device
297 * @config_scaling_param: called to configure clock scaling parameters
298 * @program_key: program or evict an inline encryption key
299 * @event_notify: called to notify important events
301 struct ufs_hba_variant_ops {
303 int (*init)(struct ufs_hba *);
304 void (*exit)(struct ufs_hba *);
305 u32 (*get_ufs_hci_version)(struct ufs_hba *);
306 int (*clk_scale_notify)(struct ufs_hba *, bool,
307 enum ufs_notify_change_status);
308 int (*setup_clocks)(struct ufs_hba *, bool,
309 enum ufs_notify_change_status);
310 int (*hce_enable_notify)(struct ufs_hba *,
311 enum ufs_notify_change_status);
312 int (*link_startup_notify)(struct ufs_hba *,
313 enum ufs_notify_change_status);
314 int (*pwr_change_notify)(struct ufs_hba *,
315 enum ufs_notify_change_status status,
316 struct ufs_pa_layer_attr *,
317 struct ufs_pa_layer_attr *);
318 void (*setup_xfer_req)(struct ufs_hba *hba, int tag,
320 void (*setup_task_mgmt)(struct ufs_hba *, int, u8);
321 void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
322 enum ufs_notify_change_status);
323 int (*apply_dev_quirks)(struct ufs_hba *hba);
324 void (*fixup_dev_quirks)(struct ufs_hba *hba);
325 int (*suspend)(struct ufs_hba *, enum ufs_pm_op,
326 enum ufs_notify_change_status);
327 int (*resume)(struct ufs_hba *, enum ufs_pm_op);
328 void (*dbg_register_dump)(struct ufs_hba *hba);
329 int (*phy_initialization)(struct ufs_hba *);
330 int (*device_reset)(struct ufs_hba *hba);
331 void (*config_scaling_param)(struct ufs_hba *hba,
332 struct devfreq_dev_profile *profile,
333 struct devfreq_simple_ondemand_data *data);
334 int (*program_key)(struct ufs_hba *hba,
335 const union ufs_crypto_cfg_entry *cfg, int slot);
336 void (*event_notify)(struct ufs_hba *hba,
337 enum ufs_event_type evt, void *data);
340 /* clock gating state */
341 enum clk_gating_state {
349 * struct ufs_clk_gating - UFS clock gating related info
350 * @gate_work: worker to turn off clocks after some delay as specified in
352 * @ungate_work: worker to turn on clocks that will be used in case of
354 * @state: the current clocks state
355 * @delay_ms: gating delay in ms
356 * @is_suspended: clk gating is suspended when set to 1 which can be used
357 * during suspend/resume
358 * @delay_attr: sysfs attribute to control delay_attr
359 * @enable_attr: sysfs attribute to enable/disable clock gating
360 * @is_enabled: Indicates the current status of clock gating
361 * @is_initialized: Indicates whether clock gating is initialized or not
362 * @active_reqs: number of requests that are pending and should be waited for
363 * completion before gating clocks.
364 * @clk_gating_workq: workqueue for clock gating work.
366 struct ufs_clk_gating {
367 struct delayed_work gate_work;
368 struct work_struct ungate_work;
369 enum clk_gating_state state;
370 unsigned long delay_ms;
372 struct device_attribute delay_attr;
373 struct device_attribute enable_attr;
377 struct workqueue_struct *clk_gating_workq;
380 struct ufs_saved_pwr_info {
381 struct ufs_pa_layer_attr info;
386 * struct ufs_clk_scaling - UFS clock scaling related data
387 * @active_reqs: number of requests that are pending. If this is zero when
388 * devfreq ->target() function is called then schedule "suspend_work" to
390 * @tot_busy_t: Total busy time in current polling window
391 * @window_start_t: Start time (in jiffies) of the current polling window
392 * @busy_start_t: Start time of current busy period
393 * @enable_attr: sysfs attribute to enable/disable clock scaling
394 * @saved_pwr_info: UFS power mode may also be changed during scaling and this
395 * one keeps track of previous power mode.
396 * @workq: workqueue to schedule devfreq suspend/resume work
397 * @suspend_work: worker to suspend devfreq
398 * @resume_work: worker to resume devfreq
399 * @min_gear: lowest HS gear to scale down to
400 * @is_enabled: tracks if scaling is currently enabled or not, controlled by
401 * clkscale_enable sysfs node
402 * @is_allowed: tracks if scaling is currently allowed or not, used to block
403 * clock scaling which is not invoked from devfreq governor
404 * @is_initialized: Indicates whether clock scaling is initialized or not
405 * @is_busy_started: tracks if busy period has started or not
406 * @is_suspended: tracks if devfreq is suspended or not
408 struct ufs_clk_scaling {
410 unsigned long tot_busy_t;
411 ktime_t window_start_t;
412 ktime_t busy_start_t;
413 struct device_attribute enable_attr;
414 struct ufs_saved_pwr_info saved_pwr_info;
415 struct workqueue_struct *workq;
416 struct work_struct suspend_work;
417 struct work_struct resume_work;
422 bool is_busy_started;
426 #define UFS_EVENT_HIST_LENGTH 8
428 * struct ufs_event_hist - keeps history of errors
429 * @pos: index to indicate cyclic buffer position
430 * @val: cyclic buffer for registers value
431 * @tstamp: cyclic buffer for time stamp
432 * @cnt: error counter
434 struct ufs_event_hist {
436 u32 val[UFS_EVENT_HIST_LENGTH];
437 u64 tstamp[UFS_EVENT_HIST_LENGTH];
438 unsigned long long cnt;
442 * struct ufs_stats - keeps usage/err statistics
443 * @last_intr_status: record the last interrupt status.
444 * @last_intr_ts: record the last interrupt timestamp.
445 * @hibern8_exit_cnt: Counter to keep track of number of exits,
446 * reset this after link-startup.
447 * @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
448 * Clear after the first successful command completion.
449 * @event: array with event history.
452 u32 last_intr_status;
455 u32 hibern8_exit_cnt;
456 u64 last_hibern8_exit_tstamp;
457 struct ufs_event_hist event[UFS_EVT_CNT];
461 * enum ufshcd_state - UFS host controller state
462 * @UFSHCD_STATE_RESET: Link is not operational. Postpone SCSI command
464 * @UFSHCD_STATE_OPERATIONAL: The host controller is operational and can process
466 * @UFSHCD_STATE_EH_SCHEDULED_NON_FATAL: The error handler has been scheduled.
467 * SCSI commands may be submitted to the controller.
468 * @UFSHCD_STATE_EH_SCHEDULED_FATAL: The error handler has been scheduled. Fail
469 * newly submitted SCSI commands with error code DID_BAD_TARGET.
470 * @UFSHCD_STATE_ERROR: An unrecoverable error occurred, e.g. link recovery
471 * failed. Fail all SCSI commands with error code DID_ERROR.
475 UFSHCD_STATE_OPERATIONAL,
476 UFSHCD_STATE_EH_SCHEDULED_NON_FATAL,
477 UFSHCD_STATE_EH_SCHEDULED_FATAL,
482 /* Interrupt aggregation support is broken */
483 UFSHCD_QUIRK_BROKEN_INTR_AGGR = 1 << 0,
486 * delay before each dme command is required as the unipro
487 * layer has shown instabilities
489 UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS = 1 << 1,
492 * If UFS host controller is having issue in processing LCC (Line
493 * Control Command) coming from device then enable this quirk.
494 * When this quirk is enabled, host controller driver should disable
495 * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
496 * attribute of device to 0).
498 UFSHCD_QUIRK_BROKEN_LCC = 1 << 2,
501 * The attribute PA_RXHSUNTERMCAP specifies whether or not the
502 * inbound Link supports unterminated line in HS mode. Setting this
503 * attribute to 1 fixes moving to HS gear.
505 UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP = 1 << 3,
508 * This quirk needs to be enabled if the host controller only allows
509 * accessing the peer dme attributes in AUTO mode (FAST AUTO or
512 UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE = 1 << 4,
515 * This quirk needs to be enabled if the host controller doesn't
516 * advertise the correct version in UFS_VER register. If this quirk
517 * is enabled, standard UFS host driver will call the vendor specific
518 * ops (get_ufs_hci_version) to get the correct version.
520 UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5,
523 * Clear handling for transfer/task request list is just opposite.
525 UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6,
528 * This quirk needs to be enabled if host controller doesn't allow
529 * that the interrupt aggregation timer and counter are reset by s/w.
531 UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7,
534 * This quirks needs to be enabled if host controller cannot be
535 * enabled via HCE register.
537 UFSHCI_QUIRK_BROKEN_HCE = 1 << 8,
540 * This quirk needs to be enabled if the host controller regards
541 * resolution of the values of PRDTO and PRDTL in UTRD as byte.
543 UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9,
546 * This quirk needs to be enabled if the host controller reports
547 * OCS FATAL ERROR with device error through sense data
549 UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10,
552 * This quirk needs to be enabled if the host controller has
553 * auto-hibernate capability but it doesn't work.
555 UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11,
558 * This quirk needs to disable manual flush for write booster
560 UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12,
563 * This quirk needs to disable unipro timeout values
564 * before power mode change
566 UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13,
569 * This quirk allows only sg entries aligned with page size.
571 UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE = 1 << 14,
574 * This quirk needs to be enabled if the host controller does not
575 * support UIC command
577 UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15,
580 * This quirk needs to be enabled if the host controller cannot
581 * support physical host configuration.
583 UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16,
586 * This quirk needs to be enabled if the host controller has
587 * 64-bit addressing supported capability but it doesn't work.
589 UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS = 1 << 17,
592 * This quirk needs to be enabled if the host controller has
593 * auto-hibernate capability but it's FASTAUTO only.
595 UFSHCD_QUIRK_HIBERN_FASTAUTO = 1 << 18,
599 /* Allow dynamic clk gating */
600 UFSHCD_CAP_CLK_GATING = 1 << 0,
602 /* Allow hiberb8 with clk gating */
603 UFSHCD_CAP_HIBERN8_WITH_CLK_GATING = 1 << 1,
605 /* Allow dynamic clk scaling */
606 UFSHCD_CAP_CLK_SCALING = 1 << 2,
608 /* Allow auto bkops to enabled during runtime suspend */
609 UFSHCD_CAP_AUTO_BKOPS_SUSPEND = 1 << 3,
612 * This capability allows host controller driver to use the UFS HCI's
613 * interrupt aggregation capability.
614 * CAUTION: Enabling this might reduce overall UFS throughput.
616 UFSHCD_CAP_INTR_AGGR = 1 << 4,
619 * This capability allows the device auto-bkops to be always enabled
620 * except during suspend (both runtime and suspend).
621 * Enabling this capability means that device will always be allowed
622 * to do background operation when it's active but it might degrade
623 * the performance of ongoing read/write operations.
625 UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND = 1 << 5,
628 * This capability allows host controller driver to automatically
629 * enable runtime power management by itself instead of waiting
630 * for userspace to control the power management.
632 UFSHCD_CAP_RPM_AUTOSUSPEND = 1 << 6,
635 * This capability allows the host controller driver to turn-on
636 * WriteBooster, if the underlying device supports it and is
637 * provisioned to be used. This would increase the write performance.
639 UFSHCD_CAP_WB_EN = 1 << 7,
642 * This capability allows the host controller driver to use the
643 * inline crypto engine, if it is present
645 UFSHCD_CAP_CRYPTO = 1 << 8,
648 * This capability allows the controller regulators to be put into
649 * lpm mode aggressively during clock gating.
650 * This would increase power savings.
652 UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9,
655 * This capability allows the host controller driver to use DeepSleep,
656 * if it is supported by the UFS device. The host controller driver must
657 * support device hardware reset via the hba->device_reset() callback,
658 * in order to exit DeepSleep state.
660 UFSHCD_CAP_DEEPSLEEP = 1 << 10,
663 * This capability allows the host controller driver to use temperature
664 * notification if it is supported by the UFS device.
666 UFSHCD_CAP_TEMP_NOTIF = 1 << 11,
669 * Enable WriteBooster when scaling up the clock and disable
670 * WriteBooster when scaling the clock down.
672 UFSHCD_CAP_WB_WITH_CLK_SCALING = 1 << 12,
675 struct ufs_hba_variant_params {
676 struct devfreq_dev_profile devfreq_profile;
677 struct devfreq_simple_ondemand_data ondemand_data;
678 u16 hba_enable_delay_us;
679 u32 wb_flush_threshold;
682 #ifdef CONFIG_SCSI_UFS_HPB
684 * struct ufshpb_dev_info - UFSHPB device related info
685 * @num_lu: the number of user logical unit to check whether all lu finished
687 * @rgn_size: device reported HPB region size
688 * @srgn_size: device reported HPB sub-region size
689 * @slave_conf_cnt: counter to check all lu finished initialization
690 * @hpb_disabled: flag to check if HPB is disabled
691 * @max_hpb_single_cmd: device reported bMAX_DATA_SIZE_FOR_SINGLE_CMD value
692 * @is_legacy: flag to check HPB 1.0
693 * @control_mode: either host or device
695 struct ufshpb_dev_info {
699 atomic_t slave_conf_cnt;
701 u8 max_hpb_single_cmd;
707 struct ufs_hba_monitor {
708 unsigned long chunk_size;
710 unsigned long nr_sec_rw[2];
711 ktime_t total_busy[2];
713 unsigned long nr_req[2];
720 ktime_t busy_start_ts[2];
727 * struct ufs_hba - per adapter private structure
728 * @mmio_base: UFSHCI base register address
729 * @ucdl_base_addr: UFS Command Descriptor base address
730 * @utrdl_base_addr: UTP Transfer Request Descriptor base address
731 * @utmrdl_base_addr: UTP Task Management Descriptor base address
732 * @ucdl_dma_addr: UFS Command Descriptor DMA address
733 * @utrdl_dma_addr: UTRDL DMA address
734 * @utmrdl_dma_addr: UTMRDL DMA address
735 * @host: Scsi_Host instance of the driver
736 * @dev: device handle
737 * @ufs_device_wlun: WLUN that controls the entire UFS device.
738 * @hwmon_device: device instance registered with the hwmon core.
739 * @curr_dev_pwr_mode: active UFS device power mode.
740 * @uic_link_state: active state of the link to the UFS device.
741 * @rpm_lvl: desired UFS power management level during runtime PM.
742 * @spm_lvl: desired UFS power management level during system PM.
743 * @pm_op_in_progress: whether or not a PM operation is in progress.
744 * @ahit: value of Auto-Hibernate Idle Timer register.
745 * @lrb: local reference block
746 * @outstanding_tasks: Bits representing outstanding task requests
747 * @outstanding_lock: Protects @outstanding_reqs.
748 * @outstanding_reqs: Bits representing outstanding transfer requests
749 * @capabilities: UFS Controller Capabilities
750 * @nutrs: Transfer Request Queue depth supported by controller
751 * @nutmrs: Task Management Queue depth supported by controller
752 * @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock.
753 * @ufs_version: UFS Version to which controller complies
754 * @vops: pointer to variant specific operations
755 * @vps: pointer to variant specific parameters
756 * @priv: pointer to variant specific private data
757 * @irq: Irq number of the controller
758 * @is_irq_enabled: whether or not the UFS controller interrupt is enabled.
759 * @dev_ref_clk_freq: reference clock frequency
760 * @quirks: bitmask with information about deviations from the UFSHCI standard.
761 * @dev_quirks: bitmask with information about deviations from the UFS standard.
762 * @tmf_tag_set: TMF tag set.
763 * @tmf_queue: Used to allocate TMF tags.
764 * @tmf_rqs: array with pointers to TMF requests while these are in progress.
765 * @active_uic_cmd: handle of active UIC command
766 * @uic_cmd_mutex: mutex for UIC command
767 * @uic_async_done: completion used during UIC processing
768 * @ufshcd_state: UFSHCD state
769 * @eh_flags: Error handling flags
770 * @intr_mask: Interrupt Mask Bits
771 * @ee_ctrl_mask: Exception event control mask
772 * @ee_drv_mask: Exception event mask for driver
773 * @ee_usr_mask: Exception event mask for user (set via debugfs)
774 * @ee_ctrl_mutex: Used to serialize exception event information.
775 * @is_powered: flag to check if HBA is powered
776 * @shutting_down: flag to check if shutdown has been invoked
777 * @host_sem: semaphore used to serialize concurrent contexts
778 * @eh_wq: Workqueue that eh_work works on
779 * @eh_work: Worker to handle UFS errors that require s/w attention
780 * @eeh_work: Worker to handle exception events
781 * @errors: HBA errors
782 * @uic_error: UFS interconnect layer error status
783 * @saved_err: sticky error mask
784 * @saved_uic_err: sticky UIC error mask
785 * @ufs_stats: various error counters
786 * @force_reset: flag to force eh_work perform a full reset
787 * @force_pmc: flag to force a power mode change
788 * @silence_err_logs: flag to silence error logs
789 * @dev_cmd: ufs device management command information
790 * @last_dme_cmd_tstamp: time stamp of the last completed DME command
791 * @nop_out_timeout: NOP OUT timeout value
792 * @dev_info: information about the UFS device
793 * @auto_bkops_enabled: to track whether bkops is enabled in device
794 * @vreg_info: UFS device voltage regulator information
795 * @clk_list_head: UFS host controller clocks list node head
796 * @req_abort_count: number of times ufshcd_abort() has been called
797 * @lanes_per_direction: number of lanes per data direction between the UFS
798 * controller and the UFS device.
799 * @pwr_info: holds current power mode
800 * @max_pwr_info: keeps the device max valid pwm
801 * @clk_gating: information related to clock gating
802 * @caps: bitmask with information about UFS controller capabilities
803 * @devfreq: frequency scaling information owned by the devfreq core
804 * @clk_scaling: frequency scaling information owned by the UFS driver
805 * @is_sys_suspended: whether or not the entire system has been suspended
806 * @urgent_bkops_lvl: keeps track of urgent bkops level for device
807 * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
808 * device is known or not.
809 * @clk_scaling_lock: used to serialize device commands and clock scaling
810 * @desc_size: descriptor sizes reported by device
811 * @scsi_block_reqs_cnt: reference counting for scsi block requests
812 * @bsg_dev: struct device associated with the BSG queue
813 * @bsg_queue: BSG queue associated with the UFS controller
814 * @rpm_dev_flush_recheck_work: used to suspend from RPM (runtime power
815 * management) after the UFS device has finished a WriteBooster buffer
816 * flush or auto BKOP.
817 * @ufshpb_dev: information related to HPB (Host Performance Booster).
818 * @monitor: statistics about UFS commands
819 * @crypto_capabilities: Content of crypto capabilities register (0x100)
820 * @crypto_cap_array: Array of crypto capabilities
821 * @crypto_cfg_register: Start of the crypto cfg array
822 * @crypto_profile: the crypto profile of this hba (if applicable)
823 * @debugfs_root: UFS controller debugfs root directory
824 * @debugfs_ee_work: used to restore ee_ctrl_mask after a delay
825 * @debugfs_ee_rate_limit_ms: user configurable delay after which to restore
827 * @luns_avail: number of regular and well known LUNs supported by the UFS
829 * @complete_put: whether or not to call ufshcd_rpm_put() from inside
830 * ufshcd_resume_complete()
833 void __iomem *mmio_base;
835 /* Virtual memory reference */
836 struct utp_transfer_cmd_desc *ucdl_base_addr;
837 struct utp_transfer_req_desc *utrdl_base_addr;
838 struct utp_task_req_desc *utmrdl_base_addr;
840 /* DMA memory reference */
841 dma_addr_t ucdl_dma_addr;
842 dma_addr_t utrdl_dma_addr;
843 dma_addr_t utmrdl_dma_addr;
845 struct Scsi_Host *host;
847 struct scsi_device *ufs_device_wlun;
849 #ifdef CONFIG_SCSI_UFS_HWMON
850 struct device *hwmon_device;
853 enum ufs_dev_pwr_mode curr_dev_pwr_mode;
854 enum uic_link_state uic_link_state;
855 /* Desired UFS power management level during runtime PM */
856 enum ufs_pm_level rpm_lvl;
857 /* Desired UFS power management level during system PM */
858 enum ufs_pm_level spm_lvl;
859 int pm_op_in_progress;
861 /* Auto-Hibernate Idle Timer register value */
864 struct ufshcd_lrb *lrb;
866 unsigned long outstanding_tasks;
867 spinlock_t outstanding_lock;
868 unsigned long outstanding_reqs;
875 const struct ufs_hba_variant_ops *vops;
876 struct ufs_hba_variant_params *vps;
880 enum ufs_ref_clk_freq dev_ref_clk_freq;
882 unsigned int quirks; /* Deviations from standard UFSHCI spec. */
884 /* Device deviations from standard UFS device spec. */
885 unsigned int dev_quirks;
887 struct blk_mq_tag_set tmf_tag_set;
888 struct request_queue *tmf_queue;
889 struct request **tmf_rqs;
891 struct uic_command *active_uic_cmd;
892 struct mutex uic_cmd_mutex;
893 struct completion *uic_async_done;
895 enum ufshcd_state ufshcd_state;
901 struct mutex ee_ctrl_mutex;
904 struct semaphore host_sem;
907 struct workqueue_struct *eh_wq;
908 struct work_struct eh_work;
909 struct work_struct eeh_work;
916 struct ufs_stats ufs_stats;
919 bool silence_err_logs;
921 /* Device management request data */
922 struct ufs_dev_cmd dev_cmd;
923 ktime_t last_dme_cmd_tstamp;
926 /* Keeps information of the UFS device connected to this host */
927 struct ufs_dev_info dev_info;
928 bool auto_bkops_enabled;
929 struct ufs_vreg_info vreg_info;
930 struct list_head clk_list_head;
932 /* Number of requests aborts */
935 /* Number of lanes available (1 or 2) for Rx/Tx */
936 u32 lanes_per_direction;
937 struct ufs_pa_layer_attr pwr_info;
938 struct ufs_pwr_mode_info max_pwr_info;
940 struct ufs_clk_gating clk_gating;
941 /* Control to enable/disable host capabilities */
944 struct devfreq *devfreq;
945 struct ufs_clk_scaling clk_scaling;
946 bool is_sys_suspended;
948 enum bkops_status urgent_bkops_lvl;
949 bool is_urgent_bkops_lvl_checked;
951 struct rw_semaphore clk_scaling_lock;
952 unsigned char desc_size[QUERY_DESC_IDN_MAX];
953 atomic_t scsi_block_reqs_cnt;
955 struct device bsg_dev;
956 struct request_queue *bsg_queue;
957 struct delayed_work rpm_dev_flush_recheck_work;
959 #ifdef CONFIG_SCSI_UFS_HPB
960 struct ufshpb_dev_info ufshpb_dev;
963 struct ufs_hba_monitor monitor;
965 #ifdef CONFIG_SCSI_UFS_CRYPTO
966 union ufs_crypto_capabilities crypto_capabilities;
967 union ufs_crypto_cap_entry *crypto_cap_array;
968 u32 crypto_cfg_register;
969 struct blk_crypto_profile crypto_profile;
971 #ifdef CONFIG_DEBUG_FS
972 struct dentry *debugfs_root;
973 struct delayed_work debugfs_ee_work;
974 u32 debugfs_ee_rate_limit_ms;
980 /* Returns true if clocks can be gated. Otherwise false */
981 static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
983 return hba->caps & UFSHCD_CAP_CLK_GATING;
985 static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba)
987 return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
989 static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba)
991 return hba->caps & UFSHCD_CAP_CLK_SCALING;
993 static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
995 return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
997 static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba)
999 return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND;
1002 static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
1004 return (hba->caps & UFSHCD_CAP_INTR_AGGR) &&
1005 !(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR);
1008 static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba)
1010 return !!(ufshcd_is_link_hibern8(hba) &&
1011 (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE));
1014 static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
1016 return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&
1017 !(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8);
1020 static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
1022 return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit);
1025 static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
1027 return hba->caps & UFSHCD_CAP_WB_EN;
1030 static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba)
1032 return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING;
1035 #define ufshcd_writel(hba, val, reg) \
1036 writel((val), (hba)->mmio_base + (reg))
1037 #define ufshcd_readl(hba, reg) \
1038 readl((hba)->mmio_base + (reg))
1041 * ufshcd_rmwl - perform read/modify/write for a controller register
1042 * @hba: per adapter instance
1043 * @mask: mask to apply on read value
1044 * @val: actual value to write
1045 * @reg: register address
1047 static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
1051 tmp = ufshcd_readl(hba, reg);
1053 tmp |= (val & mask);
1054 ufshcd_writel(hba, tmp, reg);
1057 int ufshcd_alloc_host(struct device *, struct ufs_hba **);
1058 void ufshcd_dealloc_host(struct ufs_hba *);
1059 int ufshcd_hba_enable(struct ufs_hba *hba);
1060 int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int);
1061 int ufshcd_link_recovery(struct ufs_hba *hba);
1062 int ufshcd_make_hba_operational(struct ufs_hba *hba);
1063 void ufshcd_remove(struct ufs_hba *);
1064 int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
1065 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
1066 void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
1067 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
1068 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
1069 void ufshcd_hba_stop(struct ufs_hba *hba);
1070 void ufshcd_schedule_eh_work(struct ufs_hba *hba);
1072 static inline void check_upiu_size(void)
1074 BUILD_BUG_ON(ALIGNED_UPIU_SIZE <
1075 GENERAL_UPIU_REQUEST_SIZE + QUERY_DESC_MAX_SIZE);
1079 * ufshcd_set_variant - set variant specific data to the hba
1080 * @hba: per adapter instance
1081 * @variant: pointer to variant specific data
1083 static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
1086 hba->priv = variant;
1090 * ufshcd_get_variant - get variant specific data from the hba
1091 * @hba: per adapter instance
1093 static inline void *ufshcd_get_variant(struct ufs_hba *hba)
1100 extern int ufshcd_runtime_suspend(struct device *dev);
1101 extern int ufshcd_runtime_resume(struct device *dev);
1103 #ifdef CONFIG_PM_SLEEP
1104 extern int ufshcd_system_suspend(struct device *dev);
1105 extern int ufshcd_system_resume(struct device *dev);
1107 extern int ufshcd_shutdown(struct ufs_hba *hba);
1108 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
1111 extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
1112 u8 attr_set, u32 mib_val, u8 peer);
1113 extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
1114 u32 *mib_val, u8 peer);
1115 extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
1116 struct ufs_pa_layer_attr *desired_pwr_mode);
1117 extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode);
1119 /* UIC command interfaces for DME primitives */
1122 #define ATTR_SET_NOR 0 /* NORMAL */
1123 #define ATTR_SET_ST 1 /* STATIC */
1125 static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
1128 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1129 mib_val, DME_LOCAL);
1132 static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
1135 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1136 mib_val, DME_LOCAL);
1139 static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
1142 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1146 static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
1149 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1153 static inline int ufshcd_dme_get(struct ufs_hba *hba,
1154 u32 attr_sel, u32 *mib_val)
1156 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
1159 static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
1160 u32 attr_sel, u32 *mib_val)
1162 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
1165 static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info)
1167 return (pwr_info->pwr_rx == FAST_MODE ||
1168 pwr_info->pwr_rx == FASTAUTO_MODE) &&
1169 (pwr_info->pwr_tx == FAST_MODE ||
1170 pwr_info->pwr_tx == FASTAUTO_MODE);
1173 static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
1175 return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
1178 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
1179 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
1180 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
1181 const struct ufs_dev_quirk *fixups);
1182 #define SD_ASCII_STD true
1183 #define SD_RAW false
1184 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
1185 u8 **buf, bool ascii);
1187 int ufshcd_hold(struct ufs_hba *hba, bool async);
1188 void ufshcd_release(struct ufs_hba *hba);
1190 void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value);
1192 void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
1195 u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba);
1197 int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg);
1199 int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd);
1201 int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
1202 struct utp_upiu_req *req_upiu,
1203 struct utp_upiu_req *rsp_upiu,
1205 u8 *desc_buff, int *buff_len,
1206 enum query_opcode desc_op);
1208 int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
1209 int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable);
1210 int ufshcd_suspend_prepare(struct device *dev);
1211 int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
1212 void ufshcd_resume_complete(struct device *dev);
1214 /* Wrapper functions for safely calling variant operations */
1215 static inline int ufshcd_vops_init(struct ufs_hba *hba)
1217 if (hba->vops && hba->vops->init)
1218 return hba->vops->init(hba);
1223 static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
1225 if (hba->vops && hba->vops->phy_initialization)
1226 return hba->vops->phy_initialization(hba);
1231 extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
1233 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
1234 const char *prefix);
1236 int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask);
1237 int ufshcd_write_ee_control(struct ufs_hba *hba);
1238 int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask,
1239 const u16 *other_mask, u16 set, u16 clr);
1241 #endif /* End of Header */