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,
33 DEV_CMD_TYPE_RPMB = 0x2,
37 /* uic specific errors */
45 UFS_EVT_AUTO_HIBERN8_ERR,
47 UFS_EVT_LINK_STARTUP_FAIL,
62 * struct uic_command - UIC command structure
63 * @command: UIC command
64 * @argument1: UIC command argument 1
65 * @argument2: UIC command argument 2
66 * @argument3: UIC command argument 3
67 * @cmd_active: Indicate if UIC command is outstanding
68 * @done: UIC command completion
76 struct completion done;
79 /* Used to differentiate the power management options */
86 /* Host <-> Device UniPro Link state */
88 UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */
89 UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */
90 UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */
91 UIC_LINK_BROKEN_STATE = 3, /* Link is in broken state */
94 #define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
95 #define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
96 UIC_LINK_ACTIVE_STATE)
97 #define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
98 UIC_LINK_HIBERN8_STATE)
99 #define ufshcd_is_link_broken(hba) ((hba)->uic_link_state == \
100 UIC_LINK_BROKEN_STATE)
101 #define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
102 #define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
103 UIC_LINK_ACTIVE_STATE)
104 #define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
105 UIC_LINK_HIBERN8_STATE)
106 #define ufshcd_set_link_broken(hba) ((hba)->uic_link_state = \
107 UIC_LINK_BROKEN_STATE)
109 #define ufshcd_set_ufs_dev_active(h) \
110 ((h)->curr_dev_pwr_mode = UFS_ACTIVE_PWR_MODE)
111 #define ufshcd_set_ufs_dev_sleep(h) \
112 ((h)->curr_dev_pwr_mode = UFS_SLEEP_PWR_MODE)
113 #define ufshcd_set_ufs_dev_poweroff(h) \
114 ((h)->curr_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE)
115 #define ufshcd_set_ufs_dev_deepsleep(h) \
116 ((h)->curr_dev_pwr_mode = UFS_DEEPSLEEP_PWR_MODE)
117 #define ufshcd_is_ufs_dev_active(h) \
118 ((h)->curr_dev_pwr_mode == UFS_ACTIVE_PWR_MODE)
119 #define ufshcd_is_ufs_dev_sleep(h) \
120 ((h)->curr_dev_pwr_mode == UFS_SLEEP_PWR_MODE)
121 #define ufshcd_is_ufs_dev_poweroff(h) \
122 ((h)->curr_dev_pwr_mode == UFS_POWERDOWN_PWR_MODE)
123 #define ufshcd_is_ufs_dev_deepsleep(h) \
124 ((h)->curr_dev_pwr_mode == UFS_DEEPSLEEP_PWR_MODE)
127 * UFS Power management levels.
128 * Each level is in increasing order of power savings, except DeepSleep
129 * which is lower than PowerDown with power on but not PowerDown with
143 struct ufs_pm_lvl_states {
144 enum ufs_dev_pwr_mode dev_state;
145 enum uic_link_state link_state;
149 * struct ufshcd_lrb - local reference block
150 * @utr_descriptor_ptr: UTRD address of the command
151 * @ucd_req_ptr: UCD address of the command
152 * @ucd_rsp_ptr: Response UPIU address for this command
153 * @ucd_prdt_ptr: PRDT address of the command
154 * @utrd_dma_addr: UTRD dma address for debug
155 * @ucd_prdt_dma_addr: PRDT dma address for debug
156 * @ucd_rsp_dma_addr: UPIU response dma address for debug
157 * @ucd_req_dma_addr: UPIU request dma address for debug
158 * @cmd: pointer to SCSI command
159 * @scsi_status: SCSI status of the command
160 * @command_type: SCSI, UFS, Query.
161 * @task_tag: Task tag of the command
162 * @lun: LUN of the command
163 * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
164 * @issue_time_stamp: time stamp for debug purposes (CLOCK_MONOTONIC)
165 * @issue_time_stamp_local_clock: time stamp for debug purposes (local_clock)
166 * @compl_time_stamp: time stamp for statistics (CLOCK_MONOTONIC)
167 * @compl_time_stamp_local_clock: time stamp for debug purposes (local_clock)
168 * @crypto_key_slot: the key slot to use for inline crypto (-1 if none)
169 * @data_unit_num: the data unit number for the first block for inline crypto
170 * @req_abort_skip: skip request abort task flag
173 struct utp_transfer_req_desc *utr_descriptor_ptr;
174 struct utp_upiu_req *ucd_req_ptr;
175 struct utp_upiu_rsp *ucd_rsp_ptr;
176 struct ufshcd_sg_entry *ucd_prdt_ptr;
178 dma_addr_t utrd_dma_addr;
179 dma_addr_t ucd_req_dma_addr;
180 dma_addr_t ucd_rsp_dma_addr;
181 dma_addr_t ucd_prdt_dma_addr;
183 struct scsi_cmnd *cmd;
188 u8 lun; /* UPIU LUN id field is only 8-bit wide */
190 ktime_t issue_time_stamp;
191 u64 issue_time_stamp_local_clock;
192 ktime_t compl_time_stamp;
193 u64 compl_time_stamp_local_clock;
194 #ifdef CONFIG_SCSI_UFS_CRYPTO
203 * struct ufs_query - holds relevant data structures for query request
204 * @request: request upiu and function
205 * @descriptor: buffer for sending/receiving descriptor
206 * @response: response upiu and response
209 struct ufs_query_req request;
211 struct ufs_query_res response;
215 * struct ufs_dev_cmd - all assosiated fields with device management commands
216 * @type: device management command type - Query, NOP OUT
217 * @lock: lock to allow one command at a time
218 * @complete: internal commands completion
219 * @query: Device management query information
222 enum dev_cmd_type type;
224 struct completion *complete;
225 struct ufs_query query;
229 * struct ufs_clk_info - UFS clock related info
230 * @list: list headed by hba->clk_list_head
233 * @max_freq: maximum frequency supported by the clock
234 * @min_freq: min frequency that can be used for clock scaling
235 * @curr_freq: indicates the current frequency that it is set to
236 * @keep_link_active: indicates that the clk should not be disabled if
238 * @enabled: variable to check against multiple enable/disable
240 struct ufs_clk_info {
241 struct list_head list;
247 bool keep_link_active;
251 enum ufs_notify_change_status {
256 struct ufs_pa_layer_attr {
266 struct ufs_pwr_mode_info {
268 struct ufs_pa_layer_attr info;
272 * struct ufs_hba_variant_ops - variant specific callbacks
273 * @name: variant name
274 * @init: called when the driver is initialized
275 * @exit: called to cleanup everything done in init
276 * @get_ufs_hci_version: called to get UFS HCI version
277 * @clk_scale_notify: notifies that clks are scaled up/down
278 * @setup_clocks: called before touching any of the controller registers
279 * @hce_enable_notify: called before and after HCE enable bit is set to allow
280 * variant specific Uni-Pro initialization.
281 * @link_startup_notify: called before and after Link startup is carried out
282 * to allow variant specific Uni-Pro initialization.
283 * @pwr_change_notify: called before and after a power mode change
284 * is carried out to allow vendor spesific capabilities
286 * @setup_xfer_req: called before any transfer request is issued
288 * @setup_task_mgmt: called before any task management request is issued
290 * @hibern8_notify: called around hibern8 enter/exit
291 * @apply_dev_quirks: called to apply device specific quirks
292 * @fixup_dev_quirks: called to modify device specific quirks
293 * @suspend: called during host controller PM callback
294 * @resume: called during host controller PM callback
295 * @dbg_register_dump: used to dump controller debug information
296 * @phy_initialization: used to initialize phys
297 * @device_reset: called to issue a reset pulse on the UFS device
298 * @config_scaling_param: called to configure clock scaling parameters
299 * @program_key: program or evict an inline encryption key
300 * @event_notify: called to notify important events
302 struct ufs_hba_variant_ops {
304 int (*init)(struct ufs_hba *);
305 void (*exit)(struct ufs_hba *);
306 u32 (*get_ufs_hci_version)(struct ufs_hba *);
307 int (*clk_scale_notify)(struct ufs_hba *, bool,
308 enum ufs_notify_change_status);
309 int (*setup_clocks)(struct ufs_hba *, bool,
310 enum ufs_notify_change_status);
311 int (*hce_enable_notify)(struct ufs_hba *,
312 enum ufs_notify_change_status);
313 int (*link_startup_notify)(struct ufs_hba *,
314 enum ufs_notify_change_status);
315 int (*pwr_change_notify)(struct ufs_hba *,
316 enum ufs_notify_change_status status,
317 struct ufs_pa_layer_attr *,
318 struct ufs_pa_layer_attr *);
319 void (*setup_xfer_req)(struct ufs_hba *hba, int tag,
321 void (*setup_task_mgmt)(struct ufs_hba *, int, u8);
322 void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
323 enum ufs_notify_change_status);
324 int (*apply_dev_quirks)(struct ufs_hba *hba);
325 void (*fixup_dev_quirks)(struct ufs_hba *hba);
326 int (*suspend)(struct ufs_hba *, enum ufs_pm_op,
327 enum ufs_notify_change_status);
328 int (*resume)(struct ufs_hba *, enum ufs_pm_op);
329 void (*dbg_register_dump)(struct ufs_hba *hba);
330 int (*phy_initialization)(struct ufs_hba *);
331 int (*device_reset)(struct ufs_hba *hba);
332 void (*config_scaling_param)(struct ufs_hba *hba,
333 struct devfreq_dev_profile *profile,
334 struct devfreq_simple_ondemand_data *data);
335 int (*program_key)(struct ufs_hba *hba,
336 const union ufs_crypto_cfg_entry *cfg, int slot);
337 void (*event_notify)(struct ufs_hba *hba,
338 enum ufs_event_type evt, void *data);
341 /* clock gating state */
342 enum clk_gating_state {
350 * struct ufs_clk_gating - UFS clock gating related info
351 * @gate_work: worker to turn off clocks after some delay as specified in
353 * @ungate_work: worker to turn on clocks that will be used in case of
355 * @state: the current clocks state
356 * @delay_ms: gating delay in ms
357 * @is_suspended: clk gating is suspended when set to 1 which can be used
358 * during suspend/resume
359 * @delay_attr: sysfs attribute to control delay_attr
360 * @enable_attr: sysfs attribute to enable/disable clock gating
361 * @is_enabled: Indicates the current status of clock gating
362 * @is_initialized: Indicates whether clock gating is initialized or not
363 * @active_reqs: number of requests that are pending and should be waited for
364 * completion before gating clocks.
365 * @clk_gating_workq: workqueue for clock gating work.
367 struct ufs_clk_gating {
368 struct delayed_work gate_work;
369 struct work_struct ungate_work;
370 enum clk_gating_state state;
371 unsigned long delay_ms;
373 struct device_attribute delay_attr;
374 struct device_attribute enable_attr;
378 struct workqueue_struct *clk_gating_workq;
381 struct ufs_saved_pwr_info {
382 struct ufs_pa_layer_attr info;
387 * struct ufs_clk_scaling - UFS clock scaling related data
388 * @active_reqs: number of requests that are pending. If this is zero when
389 * devfreq ->target() function is called then schedule "suspend_work" to
391 * @tot_busy_t: Total busy time in current polling window
392 * @window_start_t: Start time (in jiffies) of the current polling window
393 * @busy_start_t: Start time of current busy period
394 * @enable_attr: sysfs attribute to enable/disable clock scaling
395 * @saved_pwr_info: UFS power mode may also be changed during scaling and this
396 * one keeps track of previous power mode.
397 * @workq: workqueue to schedule devfreq suspend/resume work
398 * @suspend_work: worker to suspend devfreq
399 * @resume_work: worker to resume devfreq
400 * @min_gear: lowest HS gear to scale down to
401 * @is_enabled: tracks if scaling is currently enabled or not, controlled by
402 * clkscale_enable sysfs node
403 * @is_allowed: tracks if scaling is currently allowed or not, used to block
404 * clock scaling which is not invoked from devfreq governor
405 * @is_initialized: Indicates whether clock scaling is initialized or not
406 * @is_busy_started: tracks if busy period has started or not
407 * @is_suspended: tracks if devfreq is suspended or not
409 struct ufs_clk_scaling {
411 unsigned long tot_busy_t;
412 ktime_t window_start_t;
413 ktime_t busy_start_t;
414 struct device_attribute enable_attr;
415 struct ufs_saved_pwr_info saved_pwr_info;
416 struct workqueue_struct *workq;
417 struct work_struct suspend_work;
418 struct work_struct resume_work;
423 bool is_busy_started;
427 #define UFS_EVENT_HIST_LENGTH 8
429 * struct ufs_event_hist - keeps history of errors
430 * @pos: index to indicate cyclic buffer position
431 * @val: cyclic buffer for registers value
432 * @tstamp: cyclic buffer for time stamp
433 * @cnt: error counter
435 struct ufs_event_hist {
437 u32 val[UFS_EVENT_HIST_LENGTH];
438 u64 tstamp[UFS_EVENT_HIST_LENGTH];
439 unsigned long long cnt;
443 * struct ufs_stats - keeps usage/err statistics
444 * @last_intr_status: record the last interrupt status.
445 * @last_intr_ts: record the last interrupt timestamp.
446 * @hibern8_exit_cnt: Counter to keep track of number of exits,
447 * reset this after link-startup.
448 * @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
449 * Clear after the first successful command completion.
450 * @event: array with event history.
453 u32 last_intr_status;
456 u32 hibern8_exit_cnt;
457 u64 last_hibern8_exit_tstamp;
458 struct ufs_event_hist event[UFS_EVT_CNT];
462 * enum ufshcd_state - UFS host controller state
463 * @UFSHCD_STATE_RESET: Link is not operational. Postpone SCSI command
465 * @UFSHCD_STATE_OPERATIONAL: The host controller is operational and can process
467 * @UFSHCD_STATE_EH_SCHEDULED_NON_FATAL: The error handler has been scheduled.
468 * SCSI commands may be submitted to the controller.
469 * @UFSHCD_STATE_EH_SCHEDULED_FATAL: The error handler has been scheduled. Fail
470 * newly submitted SCSI commands with error code DID_BAD_TARGET.
471 * @UFSHCD_STATE_ERROR: An unrecoverable error occurred, e.g. link recovery
472 * failed. Fail all SCSI commands with error code DID_ERROR.
476 UFSHCD_STATE_OPERATIONAL,
477 UFSHCD_STATE_EH_SCHEDULED_NON_FATAL,
478 UFSHCD_STATE_EH_SCHEDULED_FATAL,
483 /* Interrupt aggregation support is broken */
484 UFSHCD_QUIRK_BROKEN_INTR_AGGR = 1 << 0,
487 * delay before each dme command is required as the unipro
488 * layer has shown instabilities
490 UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS = 1 << 1,
493 * If UFS host controller is having issue in processing LCC (Line
494 * Control Command) coming from device then enable this quirk.
495 * When this quirk is enabled, host controller driver should disable
496 * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
497 * attribute of device to 0).
499 UFSHCD_QUIRK_BROKEN_LCC = 1 << 2,
502 * The attribute PA_RXHSUNTERMCAP specifies whether or not the
503 * inbound Link supports unterminated line in HS mode. Setting this
504 * attribute to 1 fixes moving to HS gear.
506 UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP = 1 << 3,
509 * This quirk needs to be enabled if the host controller only allows
510 * accessing the peer dme attributes in AUTO mode (FAST AUTO or
513 UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE = 1 << 4,
516 * This quirk needs to be enabled if the host controller doesn't
517 * advertise the correct version in UFS_VER register. If this quirk
518 * is enabled, standard UFS host driver will call the vendor specific
519 * ops (get_ufs_hci_version) to get the correct version.
521 UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5,
524 * Clear handling for transfer/task request list is just opposite.
526 UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6,
529 * This quirk needs to be enabled if host controller doesn't allow
530 * that the interrupt aggregation timer and counter are reset by s/w.
532 UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7,
535 * This quirks needs to be enabled if host controller cannot be
536 * enabled via HCE register.
538 UFSHCI_QUIRK_BROKEN_HCE = 1 << 8,
541 * This quirk needs to be enabled if the host controller regards
542 * resolution of the values of PRDTO and PRDTL in UTRD as byte.
544 UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9,
547 * This quirk needs to be enabled if the host controller reports
548 * OCS FATAL ERROR with device error through sense data
550 UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10,
553 * This quirk needs to be enabled if the host controller has
554 * auto-hibernate capability but it doesn't work.
556 UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11,
559 * This quirk needs to disable manual flush for write booster
561 UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12,
564 * This quirk needs to disable unipro timeout values
565 * before power mode change
567 UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13,
570 * This quirk allows only sg entries aligned with page size.
572 UFSHCD_QUIRK_ALIGN_SG_WITH_PAGE_SIZE = 1 << 14,
575 * This quirk needs to be enabled if the host controller does not
576 * support UIC command
578 UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15,
581 * This quirk needs to be enabled if the host controller cannot
582 * support physical host configuration.
584 UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16,
587 * This quirk needs to be enabled if the host controller has
588 * 64-bit addressing supported capability but it doesn't work.
590 UFSHCD_QUIRK_BROKEN_64BIT_ADDRESS = 1 << 17,
593 * This quirk needs to be enabled if the host controller has
594 * auto-hibernate capability but it's FASTAUTO only.
596 UFSHCD_QUIRK_HIBERN_FASTAUTO = 1 << 18,
600 /* Allow dynamic clk gating */
601 UFSHCD_CAP_CLK_GATING = 1 << 0,
603 /* Allow hiberb8 with clk gating */
604 UFSHCD_CAP_HIBERN8_WITH_CLK_GATING = 1 << 1,
606 /* Allow dynamic clk scaling */
607 UFSHCD_CAP_CLK_SCALING = 1 << 2,
609 /* Allow auto bkops to enabled during runtime suspend */
610 UFSHCD_CAP_AUTO_BKOPS_SUSPEND = 1 << 3,
613 * This capability allows host controller driver to use the UFS HCI's
614 * interrupt aggregation capability.
615 * CAUTION: Enabling this might reduce overall UFS throughput.
617 UFSHCD_CAP_INTR_AGGR = 1 << 4,
620 * This capability allows the device auto-bkops to be always enabled
621 * except during suspend (both runtime and suspend).
622 * Enabling this capability means that device will always be allowed
623 * to do background operation when it's active but it might degrade
624 * the performance of ongoing read/write operations.
626 UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND = 1 << 5,
629 * This capability allows host controller driver to automatically
630 * enable runtime power management by itself instead of waiting
631 * for userspace to control the power management.
633 UFSHCD_CAP_RPM_AUTOSUSPEND = 1 << 6,
636 * This capability allows the host controller driver to turn-on
637 * WriteBooster, if the underlying device supports it and is
638 * provisioned to be used. This would increase the write performance.
640 UFSHCD_CAP_WB_EN = 1 << 7,
643 * This capability allows the host controller driver to use the
644 * inline crypto engine, if it is present
646 UFSHCD_CAP_CRYPTO = 1 << 8,
649 * This capability allows the controller regulators to be put into
650 * lpm mode aggressively during clock gating.
651 * This would increase power savings.
653 UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9,
656 * This capability allows the host controller driver to use DeepSleep,
657 * if it is supported by the UFS device. The host controller driver must
658 * support device hardware reset via the hba->device_reset() callback,
659 * in order to exit DeepSleep state.
661 UFSHCD_CAP_DEEPSLEEP = 1 << 10,
664 * This capability allows the host controller driver to use temperature
665 * notification if it is supported by the UFS device.
667 UFSHCD_CAP_TEMP_NOTIF = 1 << 11,
670 * Enable WriteBooster when scaling up the clock and disable
671 * WriteBooster when scaling the clock down.
673 UFSHCD_CAP_WB_WITH_CLK_SCALING = 1 << 12,
676 struct ufs_hba_variant_params {
677 struct devfreq_dev_profile devfreq_profile;
678 struct devfreq_simple_ondemand_data ondemand_data;
679 u16 hba_enable_delay_us;
680 u32 wb_flush_threshold;
683 #ifdef CONFIG_SCSI_UFS_HPB
685 * struct ufshpb_dev_info - UFSHPB device related info
686 * @num_lu: the number of user logical unit to check whether all lu finished
688 * @rgn_size: device reported HPB region size
689 * @srgn_size: device reported HPB sub-region size
690 * @slave_conf_cnt: counter to check all lu finished initialization
691 * @hpb_disabled: flag to check if HPB is disabled
692 * @max_hpb_single_cmd: device reported bMAX_DATA_SIZE_FOR_SINGLE_CMD value
693 * @is_legacy: flag to check HPB 1.0
694 * @control_mode: either host or device
696 struct ufshpb_dev_info {
700 atomic_t slave_conf_cnt;
702 u8 max_hpb_single_cmd;
708 struct ufs_hba_monitor {
709 unsigned long chunk_size;
711 unsigned long nr_sec_rw[2];
712 ktime_t total_busy[2];
714 unsigned long nr_req[2];
721 ktime_t busy_start_ts[2];
728 * struct ufs_hba - per adapter private structure
729 * @mmio_base: UFSHCI base register address
730 * @ucdl_base_addr: UFS Command Descriptor base address
731 * @utrdl_base_addr: UTP Transfer Request Descriptor base address
732 * @utmrdl_base_addr: UTP Task Management Descriptor base address
733 * @ucdl_dma_addr: UFS Command Descriptor DMA address
734 * @utrdl_dma_addr: UTRDL DMA address
735 * @utmrdl_dma_addr: UTMRDL DMA address
736 * @host: Scsi_Host instance of the driver
737 * @dev: device handle
738 * @ufs_device_wlun: WLUN that controls the entire UFS device.
739 * @hwmon_device: device instance registered with the hwmon core.
740 * @curr_dev_pwr_mode: active UFS device power mode.
741 * @uic_link_state: active state of the link to the UFS device.
742 * @rpm_lvl: desired UFS power management level during runtime PM.
743 * @spm_lvl: desired UFS power management level during system PM.
744 * @pm_op_in_progress: whether or not a PM operation is in progress.
745 * @ahit: value of Auto-Hibernate Idle Timer register.
746 * @lrb: local reference block
747 * @outstanding_tasks: Bits representing outstanding task requests
748 * @outstanding_lock: Protects @outstanding_reqs.
749 * @outstanding_reqs: Bits representing outstanding transfer requests
750 * @capabilities: UFS Controller Capabilities
751 * @nutrs: Transfer Request Queue depth supported by controller
752 * @nutmrs: Task Management Queue depth supported by controller
753 * @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock.
754 * @ufs_version: UFS Version to which controller complies
755 * @vops: pointer to variant specific operations
756 * @vps: pointer to variant specific parameters
757 * @priv: pointer to variant specific private data
758 * @sg_entry_size: size of struct ufshcd_sg_entry (may include variant fields)
759 * @irq: Irq number of the controller
760 * @is_irq_enabled: whether or not the UFS controller interrupt is enabled.
761 * @dev_ref_clk_freq: reference clock frequency
762 * @quirks: bitmask with information about deviations from the UFSHCI standard.
763 * @dev_quirks: bitmask with information about deviations from the UFS standard.
764 * @tmf_tag_set: TMF tag set.
765 * @tmf_queue: Used to allocate TMF tags.
766 * @tmf_rqs: array with pointers to TMF requests while these are in progress.
767 * @active_uic_cmd: handle of active UIC command
768 * @uic_cmd_mutex: mutex for UIC command
769 * @uic_async_done: completion used during UIC processing
770 * @ufshcd_state: UFSHCD state
771 * @eh_flags: Error handling flags
772 * @intr_mask: Interrupt Mask Bits
773 * @ee_ctrl_mask: Exception event control mask
774 * @ee_drv_mask: Exception event mask for driver
775 * @ee_usr_mask: Exception event mask for user (set via debugfs)
776 * @ee_ctrl_mutex: Used to serialize exception event information.
777 * @is_powered: flag to check if HBA is powered
778 * @shutting_down: flag to check if shutdown has been invoked
779 * @host_sem: semaphore used to serialize concurrent contexts
780 * @eh_wq: Workqueue that eh_work works on
781 * @eh_work: Worker to handle UFS errors that require s/w attention
782 * @eeh_work: Worker to handle exception events
783 * @errors: HBA errors
784 * @uic_error: UFS interconnect layer error status
785 * @saved_err: sticky error mask
786 * @saved_uic_err: sticky UIC error mask
787 * @ufs_stats: various error counters
788 * @force_reset: flag to force eh_work perform a full reset
789 * @force_pmc: flag to force a power mode change
790 * @silence_err_logs: flag to silence error logs
791 * @dev_cmd: ufs device management command information
792 * @last_dme_cmd_tstamp: time stamp of the last completed DME command
793 * @nop_out_timeout: NOP OUT timeout value
794 * @dev_info: information about the UFS device
795 * @auto_bkops_enabled: to track whether bkops is enabled in device
796 * @vreg_info: UFS device voltage regulator information
797 * @clk_list_head: UFS host controller clocks list node head
798 * @req_abort_count: number of times ufshcd_abort() has been called
799 * @lanes_per_direction: number of lanes per data direction between the UFS
800 * controller and the UFS device.
801 * @pwr_info: holds current power mode
802 * @max_pwr_info: keeps the device max valid pwm
803 * @clk_gating: information related to clock gating
804 * @caps: bitmask with information about UFS controller capabilities
805 * @devfreq: frequency scaling information owned by the devfreq core
806 * @clk_scaling: frequency scaling information owned by the UFS driver
807 * @system_suspending: system suspend has been started and system resume has
809 * @is_sys_suspended: UFS device has been suspended because of system suspend
810 * @urgent_bkops_lvl: keeps track of urgent bkops level for device
811 * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
812 * device is known or not.
813 * @clk_scaling_lock: used to serialize device commands and clock scaling
814 * @desc_size: descriptor sizes reported by device
815 * @scsi_block_reqs_cnt: reference counting for scsi block requests
816 * @bsg_dev: struct device associated with the BSG queue
817 * @bsg_queue: BSG queue associated with the UFS controller
818 * @rpm_dev_flush_recheck_work: used to suspend from RPM (runtime power
819 * management) after the UFS device has finished a WriteBooster buffer
820 * flush or auto BKOP.
821 * @ufshpb_dev: information related to HPB (Host Performance Booster).
822 * @monitor: statistics about UFS commands
823 * @crypto_capabilities: Content of crypto capabilities register (0x100)
824 * @crypto_cap_array: Array of crypto capabilities
825 * @crypto_cfg_register: Start of the crypto cfg array
826 * @crypto_profile: the crypto profile of this hba (if applicable)
827 * @debugfs_root: UFS controller debugfs root directory
828 * @debugfs_ee_work: used to restore ee_ctrl_mask after a delay
829 * @debugfs_ee_rate_limit_ms: user configurable delay after which to restore
831 * @luns_avail: number of regular and well known LUNs supported by the UFS
833 * @complete_put: whether or not to call ufshcd_rpm_put() from inside
834 * ufshcd_resume_complete()
837 void __iomem *mmio_base;
839 /* Virtual memory reference */
840 struct utp_transfer_cmd_desc *ucdl_base_addr;
841 struct utp_transfer_req_desc *utrdl_base_addr;
842 struct utp_task_req_desc *utmrdl_base_addr;
844 /* DMA memory reference */
845 dma_addr_t ucdl_dma_addr;
846 dma_addr_t utrdl_dma_addr;
847 dma_addr_t utmrdl_dma_addr;
849 struct Scsi_Host *host;
851 struct scsi_device *ufs_device_wlun;
853 #ifdef CONFIG_SCSI_UFS_HWMON
854 struct device *hwmon_device;
857 enum ufs_dev_pwr_mode curr_dev_pwr_mode;
858 enum uic_link_state uic_link_state;
859 /* Desired UFS power management level during runtime PM */
860 enum ufs_pm_level rpm_lvl;
861 /* Desired UFS power management level during system PM */
862 enum ufs_pm_level spm_lvl;
863 int pm_op_in_progress;
865 /* Auto-Hibernate Idle Timer register value */
868 struct ufshcd_lrb *lrb;
870 unsigned long outstanding_tasks;
871 spinlock_t outstanding_lock;
872 unsigned long outstanding_reqs;
879 const struct ufs_hba_variant_ops *vops;
880 struct ufs_hba_variant_params *vps;
882 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
883 size_t sg_entry_size;
887 enum ufs_ref_clk_freq dev_ref_clk_freq;
889 unsigned int quirks; /* Deviations from standard UFSHCI spec. */
891 /* Device deviations from standard UFS device spec. */
892 unsigned int dev_quirks;
894 struct blk_mq_tag_set tmf_tag_set;
895 struct request_queue *tmf_queue;
896 struct request **tmf_rqs;
898 struct uic_command *active_uic_cmd;
899 struct mutex uic_cmd_mutex;
900 struct completion *uic_async_done;
902 enum ufshcd_state ufshcd_state;
908 struct mutex ee_ctrl_mutex;
911 struct semaphore host_sem;
914 struct workqueue_struct *eh_wq;
915 struct work_struct eh_work;
916 struct work_struct eeh_work;
923 struct ufs_stats ufs_stats;
926 bool silence_err_logs;
928 /* Device management request data */
929 struct ufs_dev_cmd dev_cmd;
930 ktime_t last_dme_cmd_tstamp;
933 /* Keeps information of the UFS device connected to this host */
934 struct ufs_dev_info dev_info;
935 bool auto_bkops_enabled;
936 struct ufs_vreg_info vreg_info;
937 struct list_head clk_list_head;
939 /* Number of requests aborts */
942 /* Number of lanes available (1 or 2) for Rx/Tx */
943 u32 lanes_per_direction;
944 struct ufs_pa_layer_attr pwr_info;
945 struct ufs_pwr_mode_info max_pwr_info;
947 struct ufs_clk_gating clk_gating;
948 /* Control to enable/disable host capabilities */
951 struct devfreq *devfreq;
952 struct ufs_clk_scaling clk_scaling;
953 bool system_suspending;
954 bool is_sys_suspended;
956 enum bkops_status urgent_bkops_lvl;
957 bool is_urgent_bkops_lvl_checked;
959 struct rw_semaphore clk_scaling_lock;
960 unsigned char desc_size[QUERY_DESC_IDN_MAX];
961 atomic_t scsi_block_reqs_cnt;
963 struct device bsg_dev;
964 struct request_queue *bsg_queue;
965 struct delayed_work rpm_dev_flush_recheck_work;
967 #ifdef CONFIG_SCSI_UFS_HPB
968 struct ufshpb_dev_info ufshpb_dev;
971 struct ufs_hba_monitor monitor;
973 #ifdef CONFIG_SCSI_UFS_CRYPTO
974 union ufs_crypto_capabilities crypto_capabilities;
975 union ufs_crypto_cap_entry *crypto_cap_array;
976 u32 crypto_cfg_register;
977 struct blk_crypto_profile crypto_profile;
979 #ifdef CONFIG_DEBUG_FS
980 struct dentry *debugfs_root;
981 struct delayed_work debugfs_ee_work;
982 u32 debugfs_ee_rate_limit_ms;
988 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE
989 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
991 return hba->sg_entry_size;
994 static inline void ufshcd_set_sg_entry_size(struct ufs_hba *hba, size_t sg_entry_size)
996 WARN_ON_ONCE(sg_entry_size < sizeof(struct ufshcd_sg_entry));
997 hba->sg_entry_size = sg_entry_size;
1000 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba)
1002 return sizeof(struct ufshcd_sg_entry);
1005 #define ufshcd_set_sg_entry_size(hba, sg_entry_size) \
1006 ({ (void)(hba); BUILD_BUG_ON(sg_entry_size != sizeof(struct ufshcd_sg_entry)); })
1009 static inline size_t sizeof_utp_transfer_cmd_desc(const struct ufs_hba *hba)
1011 return sizeof(struct utp_transfer_cmd_desc) + SG_ALL * ufshcd_sg_entry_size(hba);
1014 /* Returns true if clocks can be gated. Otherwise false */
1015 static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
1017 return hba->caps & UFSHCD_CAP_CLK_GATING;
1019 static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba)
1021 return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
1023 static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba)
1025 return hba->caps & UFSHCD_CAP_CLK_SCALING;
1027 static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
1029 return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
1031 static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba)
1033 return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND;
1036 static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
1038 return (hba->caps & UFSHCD_CAP_INTR_AGGR) &&
1039 !(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR);
1042 static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba)
1044 return !!(ufshcd_is_link_hibern8(hba) &&
1045 (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE));
1048 static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
1050 return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&
1051 !(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8);
1054 static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba)
1056 return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit);
1059 static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba)
1061 return hba->caps & UFSHCD_CAP_WB_EN;
1064 static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba)
1066 return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING;
1069 #define ufshcd_writel(hba, val, reg) \
1070 writel((val), (hba)->mmio_base + (reg))
1071 #define ufshcd_readl(hba, reg) \
1072 readl((hba)->mmio_base + (reg))
1075 * ufshcd_rmwl - perform read/modify/write for a controller register
1076 * @hba: per adapter instance
1077 * @mask: mask to apply on read value
1078 * @val: actual value to write
1079 * @reg: register address
1081 static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
1085 tmp = ufshcd_readl(hba, reg);
1087 tmp |= (val & mask);
1088 ufshcd_writel(hba, tmp, reg);
1091 int ufshcd_alloc_host(struct device *, struct ufs_hba **);
1092 void ufshcd_dealloc_host(struct ufs_hba *);
1093 int ufshcd_hba_enable(struct ufs_hba *hba);
1094 int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int);
1095 int ufshcd_link_recovery(struct ufs_hba *hba);
1096 int ufshcd_make_hba_operational(struct ufs_hba *hba);
1097 void ufshcd_remove(struct ufs_hba *);
1098 int ufshcd_uic_hibern8_enter(struct ufs_hba *hba);
1099 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba);
1100 void ufshcd_delay_us(unsigned long us, unsigned long tolerance);
1101 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
1102 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
1103 void ufshcd_hba_stop(struct ufs_hba *hba);
1104 void ufshcd_schedule_eh_work(struct ufs_hba *hba);
1107 * ufshcd_set_variant - set variant specific data to the hba
1108 * @hba: per adapter instance
1109 * @variant: pointer to variant specific data
1111 static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
1114 hba->priv = variant;
1118 * ufshcd_get_variant - get variant specific data from the hba
1119 * @hba: per adapter instance
1121 static inline void *ufshcd_get_variant(struct ufs_hba *hba)
1128 extern int ufshcd_runtime_suspend(struct device *dev);
1129 extern int ufshcd_runtime_resume(struct device *dev);
1131 #ifdef CONFIG_PM_SLEEP
1132 extern int ufshcd_system_suspend(struct device *dev);
1133 extern int ufshcd_system_resume(struct device *dev);
1135 extern int ufshcd_shutdown(struct ufs_hba *hba);
1136 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
1139 extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
1140 u8 attr_set, u32 mib_val, u8 peer);
1141 extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
1142 u32 *mib_val, u8 peer);
1143 extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
1144 struct ufs_pa_layer_attr *desired_pwr_mode);
1145 extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode);
1147 /* UIC command interfaces for DME primitives */
1150 #define ATTR_SET_NOR 0 /* NORMAL */
1151 #define ATTR_SET_ST 1 /* STATIC */
1153 static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
1156 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1157 mib_val, DME_LOCAL);
1160 static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
1163 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1164 mib_val, DME_LOCAL);
1167 static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
1170 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
1174 static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
1177 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
1181 static inline int ufshcd_dme_get(struct ufs_hba *hba,
1182 u32 attr_sel, u32 *mib_val)
1184 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
1187 static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
1188 u32 attr_sel, u32 *mib_val)
1190 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
1193 static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info)
1195 return (pwr_info->pwr_rx == FAST_MODE ||
1196 pwr_info->pwr_rx == FASTAUTO_MODE) &&
1197 (pwr_info->pwr_tx == FAST_MODE ||
1198 pwr_info->pwr_tx == FASTAUTO_MODE);
1201 static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba)
1203 return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
1206 void ufshcd_auto_hibern8_enable(struct ufs_hba *hba);
1207 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit);
1208 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba,
1209 const struct ufs_dev_quirk *fixups);
1210 #define SD_ASCII_STD true
1211 #define SD_RAW false
1212 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
1213 u8 **buf, bool ascii);
1215 int ufshcd_hold(struct ufs_hba *hba, bool async);
1216 void ufshcd_release(struct ufs_hba *hba);
1218 void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value);
1220 void ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
1223 u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba);
1225 int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg);
1227 int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd);
1229 int ufshcd_exec_raw_upiu_cmd(struct ufs_hba *hba,
1230 struct utp_upiu_req *req_upiu,
1231 struct utp_upiu_req *rsp_upiu,
1233 u8 *desc_buff, int *buff_len,
1234 enum query_opcode desc_op);
1235 int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *req_upiu,
1236 struct utp_upiu_req *rsp_upiu, struct ufs_ehs *ehs_req,
1237 struct ufs_ehs *ehs_rsp, int sg_cnt,
1238 struct scatterlist *sg_list, enum dma_data_direction dir);
1239 int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable);
1240 int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable);
1241 int ufshcd_suspend_prepare(struct device *dev);
1242 int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm);
1243 void ufshcd_resume_complete(struct device *dev);
1245 /* Wrapper functions for safely calling variant operations */
1246 static inline int ufshcd_vops_init(struct ufs_hba *hba)
1248 if (hba->vops && hba->vops->init)
1249 return hba->vops->init(hba);
1254 static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba)
1256 if (hba->vops && hba->vops->phy_initialization)
1257 return hba->vops->phy_initialization(hba);
1262 extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[];
1264 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
1265 const char *prefix);
1267 int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask);
1268 int ufshcd_write_ee_control(struct ufs_hba *hba);
1269 int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask,
1270 const u16 *other_mask, u16 set, u16 clr);
1272 #endif /* End of Header */