2 * Universal Flash Storage Host controller driver
4 * This code is based on drivers/scsi/ufs/ufshcd.h
5 * Copyright (C) 2011-2013 Samsung India Software Operations
6 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
9 * Santosh Yaraganavi <santosh.sy@samsung.com>
10 * Vinayak Holikatti <h.vinayak@samsung.com>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 * See the COPYING file in the top-level directory or visit
17 * <http://www.gnu.org/licenses/gpl-2.0.html>
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * This program is provided "AS IS" and "WITH ALL FAULTS" and
25 * without warranty of any kind. You are solely responsible for
26 * determining the appropriateness of using and distributing
27 * the program and assume all risks associated with your exercise
28 * of rights with respect to the program, including but not limited
29 * to infringement of third party rights, the risks and costs of
30 * program errors, damage to or loss of data, programs or equipment,
31 * and unavailability or interruption of operations. Under no
32 * circumstances will the contributor of this Program be liable for
33 * any damages of any kind arising from your use or distribution of
40 #include <linux/module.h>
41 #include <linux/kernel.h>
42 #include <linux/init.h>
43 #include <linux/interrupt.h>
45 #include <linux/delay.h>
46 #include <linux/slab.h>
47 #include <linux/spinlock.h>
48 #include <linux/rwsem.h>
49 #include <linux/workqueue.h>
50 #include <linux/errno.h>
51 #include <linux/types.h>
52 #include <linux/wait.h>
53 #include <linux/bitops.h>
54 #include <linux/pm_runtime.h>
55 #include <linux/clk.h>
56 #include <linux/completion.h>
57 #include <linux/regulator/consumer.h>
61 #include <asm/byteorder.h>
62 #include <scsi/scsi.h>
63 #include <scsi/scsi_cmnd.h>
64 #include <scsi/scsi_host.h>
65 #include <scsi/scsi_tcq.h>
66 #include <scsi/scsi_dbg.h>
67 #include <scsi/scsi_eh.h>
72 #define UFSHCD "ufshcd"
73 #define UFSHCD_DRIVER_VERSION "0.2"
78 DEV_CMD_TYPE_NOP
= 0x0,
79 DEV_CMD_TYPE_QUERY
= 0x1,
83 * struct uic_command - UIC command structure
84 * @command: UIC command
85 * @argument1: UIC command argument 1
86 * @argument2: UIC command argument 2
87 * @argument3: UIC command argument 3
88 * @cmd_active: Indicate if UIC command is outstanding
89 * @result: UIC command result
90 * @done: UIC command completion
99 struct completion done
;
102 /* Used to differentiate the power management options */
109 #define ufshcd_is_runtime_pm(op) ((op) == UFS_RUNTIME_PM)
110 #define ufshcd_is_system_pm(op) ((op) == UFS_SYSTEM_PM)
111 #define ufshcd_is_shutdown_pm(op) ((op) == UFS_SHUTDOWN_PM)
113 /* Host <-> Device UniPro Link state */
114 enum uic_link_state
{
115 UIC_LINK_OFF_STATE
= 0, /* Link powered down or disabled */
116 UIC_LINK_ACTIVE_STATE
= 1, /* Link is in Fast/Slow/Sleep state */
117 UIC_LINK_HIBERN8_STATE
= 2, /* Link is in Hibernate state */
120 #define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
121 #define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
122 UIC_LINK_ACTIVE_STATE)
123 #define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
124 UIC_LINK_HIBERN8_STATE)
125 #define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
126 #define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
127 UIC_LINK_ACTIVE_STATE)
128 #define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
129 UIC_LINK_HIBERN8_STATE)
132 * UFS Power management levels.
133 * Each level is in increasing order of power savings.
136 UFS_PM_LVL_0
, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_ACTIVE_STATE */
137 UFS_PM_LVL_1
, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_HIBERN8_STATE */
138 UFS_PM_LVL_2
, /* UFS_SLEEP_PWR_MODE, UIC_LINK_ACTIVE_STATE */
139 UFS_PM_LVL_3
, /* UFS_SLEEP_PWR_MODE, UIC_LINK_HIBERN8_STATE */
140 UFS_PM_LVL_4
, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_HIBERN8_STATE */
141 UFS_PM_LVL_5
, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_OFF_STATE */
145 struct ufs_pm_lvl_states
{
146 enum ufs_dev_pwr_mode dev_state
;
147 enum uic_link_state link_state
;
151 * struct ufshcd_lrb - local reference block
152 * @utr_descriptor_ptr: UTRD address of the command
153 * @ucd_req_ptr: UCD address of the command
154 * @ucd_rsp_ptr: Response UPIU address for this command
155 * @ucd_prdt_ptr: PRDT address of the command
156 * @utrd_dma_addr: UTRD dma address for debug
157 * @ucd_prdt_dma_addr: PRDT dma address for debug
158 * @ucd_rsp_dma_addr: UPIU response dma address for debug
159 * @ucd_req_dma_addr: UPIU request dma address for debug
160 * @cmd: pointer to SCSI command
161 * @sense_buffer: pointer to sense buffer address of the SCSI command
162 * @sense_bufflen: Length of the sense buffer
163 * @scsi_status: SCSI status of the command
164 * @command_type: SCSI, UFS, Query.
165 * @task_tag: Task tag of the command
166 * @lun: LUN of the command
167 * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
168 * @issue_time_stamp: time stamp for debug purposes
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
;
184 unsigned int sense_bufflen
;
189 u8 lun
; /* UPIU LUN id field is only 8-bit wide */
191 ktime_t issue_time_stamp
;
197 * struct ufs_query - holds relevant data structures for query request
198 * @request: request upiu and function
199 * @descriptor: buffer for sending/receiving descriptor
200 * @response: response upiu and response
203 struct ufs_query_req request
;
205 struct ufs_query_res response
;
209 * struct ufs_dev_cmd - all assosiated fields with device management commands
210 * @type: device management command type - Query, NOP OUT
211 * @lock: lock to allow one command at a time
212 * @complete: internal commands completion
213 * @tag_wq: wait queue until free command slot is available
216 enum dev_cmd_type type
;
218 struct completion
*complete
;
219 wait_queue_head_t tag_wq
;
220 struct ufs_query query
;
224 * struct ufs_clk_info - UFS clock related info
225 * @list: list headed by hba->clk_list_head
228 * @max_freq: maximum frequency supported by the clock
229 * @min_freq: min frequency that can be used for clock scaling
230 * @curr_freq: indicates the current frequency that it is set to
231 * @enabled: variable to check against multiple enable/disable
233 struct ufs_clk_info
{
234 struct list_head list
;
243 enum ufs_notify_change_status
{
248 struct ufs_pa_layer_attr
{
258 struct ufs_pwr_mode_info
{
260 struct ufs_pa_layer_attr info
;
264 * struct ufs_hba_variant_ops - variant specific callbacks
265 * @name: variant name
266 * @init: called when the driver is initialized
267 * @exit: called to cleanup everything done in init
268 * @get_ufs_hci_version: called to get UFS HCI version
269 * @clk_scale_notify: notifies that clks are scaled up/down
270 * @setup_clocks: called before touching any of the controller registers
271 * @setup_regulators: called before accessing the host controller
272 * @hce_enable_notify: called before and after HCE enable bit is set to allow
273 * variant specific Uni-Pro initialization.
274 * @link_startup_notify: called before and after Link startup is carried out
275 * to allow variant specific Uni-Pro initialization.
276 * @pwr_change_notify: called before and after a power mode change
277 * is carried out to allow vendor spesific capabilities
279 * @setup_xfer_req: called before any transfer request is issued
281 * @setup_task_mgmt: called before any task management request is issued
283 * @hibern8_notify: called around hibern8 enter/exit
284 * @apply_dev_quirks: called to apply device specific quirks
285 * @suspend: called during host controller PM callback
286 * @resume: called during host controller PM callback
287 * @dbg_register_dump: used to dump controller debug information
288 * @phy_initialization: used to initialize phys
290 struct ufs_hba_variant_ops
{
292 int (*init
)(struct ufs_hba
*);
293 void (*exit
)(struct ufs_hba
*);
294 u32 (*get_ufs_hci_version
)(struct ufs_hba
*);
295 int (*clk_scale_notify
)(struct ufs_hba
*, bool,
296 enum ufs_notify_change_status
);
297 int (*setup_clocks
)(struct ufs_hba
*, bool,
298 enum ufs_notify_change_status
);
299 int (*setup_regulators
)(struct ufs_hba
*, bool);
300 int (*hce_enable_notify
)(struct ufs_hba
*,
301 enum ufs_notify_change_status
);
302 int (*link_startup_notify
)(struct ufs_hba
*,
303 enum ufs_notify_change_status
);
304 int (*pwr_change_notify
)(struct ufs_hba
*,
305 enum ufs_notify_change_status status
,
306 struct ufs_pa_layer_attr
*,
307 struct ufs_pa_layer_attr
*);
308 void (*setup_xfer_req
)(struct ufs_hba
*, int, bool);
309 void (*setup_task_mgmt
)(struct ufs_hba
*, int, u8
);
310 void (*hibern8_notify
)(struct ufs_hba
*, enum uic_cmd_dme
,
311 enum ufs_notify_change_status
);
312 int (*apply_dev_quirks
)(struct ufs_hba
*);
313 int (*suspend
)(struct ufs_hba
*, enum ufs_pm_op
);
314 int (*resume
)(struct ufs_hba
*, enum ufs_pm_op
);
315 void (*dbg_register_dump
)(struct ufs_hba
*hba
);
316 int (*phy_initialization
)(struct ufs_hba
*);
319 /* clock gating state */
320 enum clk_gating_state
{
328 * struct ufs_clk_gating - UFS clock gating related info
329 * @gate_work: worker to turn off clocks after some delay as specified in
331 * @ungate_work: worker to turn on clocks that will be used in case of
333 * @state: the current clocks state
334 * @delay_ms: gating delay in ms
335 * @is_suspended: clk gating is suspended when set to 1 which can be used
336 * during suspend/resume
337 * @delay_attr: sysfs attribute to control delay_attr
338 * @enable_attr: sysfs attribute to enable/disable clock gating
339 * @is_enabled: Indicates the current status of clock gating
340 * @active_reqs: number of requests that are pending and should be waited for
341 * completion before gating clocks.
343 struct ufs_clk_gating
{
344 struct delayed_work gate_work
;
345 struct work_struct ungate_work
;
346 enum clk_gating_state state
;
347 unsigned long delay_ms
;
349 struct device_attribute delay_attr
;
350 struct device_attribute enable_attr
;
355 struct ufs_saved_pwr_info
{
356 struct ufs_pa_layer_attr info
;
361 * struct ufs_clk_scaling - UFS clock scaling related data
362 * @active_reqs: number of requests that are pending. If this is zero when
363 * devfreq ->target() function is called then schedule "suspend_work" to
365 * @tot_busy_t: Total busy time in current polling window
366 * @window_start_t: Start time (in jiffies) of the current polling window
367 * @busy_start_t: Start time of current busy period
368 * @enable_attr: sysfs attribute to enable/disable clock scaling
369 * @saved_pwr_info: UFS power mode may also be changed during scaling and this
370 * one keeps track of previous power mode.
371 * @workq: workqueue to schedule devfreq suspend/resume work
372 * @suspend_work: worker to suspend devfreq
373 * @resume_work: worker to resume devfreq
374 * @is_allowed: tracks if scaling is currently allowed or not
375 * @is_busy_started: tracks if busy period has started or not
376 * @is_suspended: tracks if devfreq is suspended or not
378 struct ufs_clk_scaling
{
380 unsigned long tot_busy_t
;
381 unsigned long window_start_t
;
382 ktime_t busy_start_t
;
383 struct device_attribute enable_attr
;
384 struct ufs_saved_pwr_info saved_pwr_info
;
385 struct workqueue_struct
*workq
;
386 struct work_struct suspend_work
;
387 struct work_struct resume_work
;
389 bool is_busy_started
;
394 * struct ufs_init_prefetch - contains data that is pre-fetched once during
396 * @icc_level: icc level which was read during initialization
398 struct ufs_init_prefetch
{
402 #define UIC_ERR_REG_HIST_LENGTH 8
404 * struct ufs_uic_err_reg_hist - keeps history of uic errors
405 * @pos: index to indicate cyclic buffer position
406 * @reg: cyclic buffer for registers value
407 * @tstamp: cyclic buffer for time stamp
409 struct ufs_uic_err_reg_hist
{
411 u32 reg
[UIC_ERR_REG_HIST_LENGTH
];
412 ktime_t tstamp
[UIC_ERR_REG_HIST_LENGTH
];
416 * struct ufs_stats - keeps usage/err statistics
417 * @hibern8_exit_cnt: Counter to keep track of number of exits,
418 * reset this after link-startup.
419 * @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
420 * Clear after the first successful command completion.
421 * @pa_err: tracks pa-uic errors
422 * @dl_err: tracks dl-uic errors
423 * @nl_err: tracks nl-uic errors
424 * @tl_err: tracks tl-uic errors
425 * @dme_err: tracks dme errors
428 u32 hibern8_exit_cnt
;
429 ktime_t last_hibern8_exit_tstamp
;
430 struct ufs_uic_err_reg_hist pa_err
;
431 struct ufs_uic_err_reg_hist dl_err
;
432 struct ufs_uic_err_reg_hist nl_err
;
433 struct ufs_uic_err_reg_hist tl_err
;
434 struct ufs_uic_err_reg_hist dme_err
;
438 * struct ufs_hba - per adapter private structure
439 * @mmio_base: UFSHCI base register address
440 * @ucdl_base_addr: UFS Command Descriptor base address
441 * @utrdl_base_addr: UTP Transfer Request Descriptor base address
442 * @utmrdl_base_addr: UTP Task Management Descriptor base address
443 * @ucdl_dma_addr: UFS Command Descriptor DMA address
444 * @utrdl_dma_addr: UTRDL DMA address
445 * @utmrdl_dma_addr: UTMRDL DMA address
446 * @host: Scsi_Host instance of the driver
447 * @dev: device handle
448 * @lrb: local reference block
449 * @lrb_in_use: lrb in use
450 * @outstanding_tasks: Bits representing outstanding task requests
451 * @outstanding_reqs: Bits representing outstanding transfer requests
452 * @capabilities: UFS Controller Capabilities
453 * @nutrs: Transfer Request Queue depth supported by controller
454 * @nutmrs: Task Management Queue depth supported by controller
455 * @ufs_version: UFS Version to which controller complies
456 * @vops: pointer to variant specific operations
457 * @priv: pointer to variant specific private data
458 * @irq: Irq number of the controller
459 * @active_uic_cmd: handle of active UIC command
460 * @uic_cmd_mutex: mutex for uic command
461 * @tm_wq: wait queue for task management
462 * @tm_tag_wq: wait queue for free task management slots
463 * @tm_slots_in_use: bit map of task management request slots in use
464 * @pwr_done: completion for power mode change
465 * @tm_condition: condition variable for task management
466 * @ufshcd_state: UFSHCD states
467 * @eh_flags: Error handling flags
468 * @intr_mask: Interrupt Mask Bits
469 * @ee_ctrl_mask: Exception event control mask
470 * @is_powered: flag to check if HBA is powered
471 * @is_init_prefetch: flag to check if data was pre-fetched in initialization
472 * @init_prefetch_data: data pre-fetched during initialization
473 * @eh_work: Worker to handle UFS errors that require s/w attention
474 * @eeh_work: Worker to handle exception events
475 * @errors: HBA errors
476 * @uic_error: UFS interconnect layer error status
477 * @saved_err: sticky error mask
478 * @saved_uic_err: sticky UIC error mask
479 * @dev_cmd: ufs device management command information
480 * @last_dme_cmd_tstamp: time stamp of the last completed DME command
481 * @auto_bkops_enabled: to track whether bkops is enabled in device
482 * @vreg_info: UFS device voltage regulator information
483 * @clk_list_head: UFS host controller clocks list node head
484 * @pwr_info: holds current power mode
485 * @max_pwr_info: keeps the device max valid pwm
486 * @urgent_bkops_lvl: keeps track of urgent bkops level for device
487 * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
488 * device is known or not.
491 void __iomem
*mmio_base
;
493 /* Virtual memory reference */
494 struct utp_transfer_cmd_desc
*ucdl_base_addr
;
495 struct utp_transfer_req_desc
*utrdl_base_addr
;
496 struct utp_task_req_desc
*utmrdl_base_addr
;
498 /* DMA memory reference */
499 dma_addr_t ucdl_dma_addr
;
500 dma_addr_t utrdl_dma_addr
;
501 dma_addr_t utmrdl_dma_addr
;
503 struct Scsi_Host
*host
;
506 * This field is to keep a reference to "scsi_device" corresponding to
509 struct scsi_device
*sdev_ufs_device
;
511 enum ufs_dev_pwr_mode curr_dev_pwr_mode
;
512 enum uic_link_state uic_link_state
;
513 /* Desired UFS power management level during runtime PM */
514 enum ufs_pm_level rpm_lvl
;
515 /* Desired UFS power management level during system PM */
516 enum ufs_pm_level spm_lvl
;
517 struct device_attribute rpm_lvl_attr
;
518 struct device_attribute spm_lvl_attr
;
519 int pm_op_in_progress
;
521 struct ufshcd_lrb
*lrb
;
522 unsigned long lrb_in_use
;
524 unsigned long outstanding_tasks
;
525 unsigned long outstanding_reqs
;
531 struct ufs_hba_variant_ops
*vops
;
536 /* Interrupt aggregation support is broken */
537 #define UFSHCD_QUIRK_BROKEN_INTR_AGGR UFS_BIT(0)
540 * delay before each dme command is required as the unipro
541 * layer has shown instabilities
543 #define UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS UFS_BIT(1)
546 * If UFS host controller is having issue in processing LCC (Line
547 * Control Command) coming from device then enable this quirk.
548 * When this quirk is enabled, host controller driver should disable
549 * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
550 * attribute of device to 0).
552 #define UFSHCD_QUIRK_BROKEN_LCC UFS_BIT(2)
555 * The attribute PA_RXHSUNTERMCAP specifies whether or not the
556 * inbound Link supports unterminated line in HS mode. Setting this
557 * attribute to 1 fixes moving to HS gear.
559 #define UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP UFS_BIT(3)
562 * This quirk needs to be enabled if the host contoller only allows
563 * accessing the peer dme attributes in AUTO mode (FAST AUTO or
566 #define UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE UFS_BIT(4)
569 * This quirk needs to be enabled if the host contoller doesn't
570 * advertise the correct version in UFS_VER register. If this quirk
571 * is enabled, standard UFS host driver will call the vendor specific
572 * ops (get_ufs_hci_version) to get the correct version.
574 #define UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION UFS_BIT(5)
577 * This quirk needs to be enabled if the host contoller regards
578 * resolution of the values of PRDTO and PRDTL in UTRD as byte.
580 #define UFSHCD_QUIRK_PRDT_BYTE_GRAN UFS_BIT(7)
582 unsigned int quirks
; /* Deviations from standard UFSHCI spec. */
584 /* Device deviations from standard UFS device spec. */
585 unsigned int dev_quirks
;
587 wait_queue_head_t tm_wq
;
588 wait_queue_head_t tm_tag_wq
;
589 unsigned long tm_condition
;
590 unsigned long tm_slots_in_use
;
592 struct uic_command
*active_uic_cmd
;
593 struct mutex uic_cmd_mutex
;
594 struct completion
*uic_async_done
;
601 bool is_init_prefetch
;
602 struct ufs_init_prefetch init_prefetch_data
;
605 struct work_struct eh_work
;
606 struct work_struct eeh_work
;
613 struct ufs_stats ufs_stats
;
615 /* Device management request data */
616 struct ufs_dev_cmd dev_cmd
;
617 ktime_t last_dme_cmd_tstamp
;
619 /* Keeps information of the UFS device connected to this host */
620 struct ufs_dev_info dev_info
;
621 bool auto_bkops_enabled
;
622 struct ufs_vreg_info vreg_info
;
623 struct list_head clk_list_head
;
625 bool wlun_dev_clr_ua
;
627 /* Number of requests aborts */
630 /* Number of lanes available (1 or 2) for Rx/Tx */
631 u32 lanes_per_direction
;
632 struct ufs_pa_layer_attr pwr_info
;
633 struct ufs_pwr_mode_info max_pwr_info
;
635 struct ufs_clk_gating clk_gating
;
636 /* Control to enable/disable host capabilities */
638 /* Allow dynamic clk gating */
639 #define UFSHCD_CAP_CLK_GATING (1 << 0)
640 /* Allow hiberb8 with clk gating */
641 #define UFSHCD_CAP_HIBERN8_WITH_CLK_GATING (1 << 1)
642 /* Allow dynamic clk scaling */
643 #define UFSHCD_CAP_CLK_SCALING (1 << 2)
644 /* Allow auto bkops to enabled during runtime suspend */
645 #define UFSHCD_CAP_AUTO_BKOPS_SUSPEND (1 << 3)
647 * This capability allows host controller driver to use the UFS HCI's
648 * interrupt aggregation capability.
649 * CAUTION: Enabling this might reduce overall UFS throughput.
651 #define UFSHCD_CAP_INTR_AGGR (1 << 4)
653 * This capability allows the device auto-bkops to be always enabled
654 * except during suspend (both runtime and suspend).
655 * Enabling this capability means that device will always be allowed
656 * to do background operation when it's active but it might degrade
657 * the performance of ongoing read/write operations.
659 #define UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND (1 << 5)
661 struct devfreq
*devfreq
;
662 struct ufs_clk_scaling clk_scaling
;
663 bool is_sys_suspended
;
665 enum bkops_status urgent_bkops_lvl
;
666 bool is_urgent_bkops_lvl_checked
;
668 struct rw_semaphore clk_scaling_lock
;
671 /* Returns true if clocks can be gated. Otherwise false */
672 static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba
*hba
)
674 return hba
->caps
& UFSHCD_CAP_CLK_GATING
;
676 static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba
*hba
)
678 return hba
->caps
& UFSHCD_CAP_HIBERN8_WITH_CLK_GATING
;
680 static inline int ufshcd_is_clkscaling_supported(struct ufs_hba
*hba
)
682 return hba
->caps
& UFSHCD_CAP_CLK_SCALING
;
684 static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba
*hba
)
686 return hba
->caps
& UFSHCD_CAP_AUTO_BKOPS_SUSPEND
;
689 static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba
*hba
)
691 /* DWC UFS Core has the Interrupt aggregation feature but is not detectable*/
692 #ifndef CONFIG_SCSI_UFS_DWC
693 if ((hba
->caps
& UFSHCD_CAP_INTR_AGGR
) &&
694 !(hba
->quirks
& UFSHCD_QUIRK_BROKEN_INTR_AGGR
))
703 #define ufshcd_writel(hba, val, reg) \
704 writel((val), (hba)->mmio_base + (reg))
705 #define ufshcd_readl(hba, reg) \
706 readl((hba)->mmio_base + (reg))
709 * ufshcd_rmwl - read modify write into a register
710 * @hba - per adapter instance
711 * @mask - mask to apply on read value
712 * @val - actual value to write
713 * @reg - register address
715 static inline void ufshcd_rmwl(struct ufs_hba
*hba
, u32 mask
, u32 val
, u32 reg
)
719 tmp
= ufshcd_readl(hba
, reg
);
722 ufshcd_writel(hba
, tmp
, reg
);
725 int ufshcd_alloc_host(struct device
*, struct ufs_hba
**);
726 void ufshcd_dealloc_host(struct ufs_hba
*);
727 int ufshcd_init(struct ufs_hba
* , void __iomem
* , unsigned int);
728 void ufshcd_remove(struct ufs_hba
*);
729 int ufshcd_wait_for_register(struct ufs_hba
*hba
, u32 reg
, u32 mask
,
730 u32 val
, unsigned long interval_us
,
731 unsigned long timeout_ms
, bool can_sleep
);
733 static inline void check_upiu_size(void)
735 BUILD_BUG_ON(ALIGNED_UPIU_SIZE
<
736 GENERAL_UPIU_REQUEST_SIZE
+ QUERY_DESC_MAX_SIZE
);
740 * ufshcd_set_variant - set variant specific data to the hba
741 * @hba - per adapter instance
742 * @variant - pointer to variant specific data
744 static inline void ufshcd_set_variant(struct ufs_hba
*hba
, void *variant
)
751 * ufshcd_get_variant - get variant specific data from the hba
752 * @hba - per adapter instance
754 static inline void *ufshcd_get_variant(struct ufs_hba
*hba
)
759 static inline bool ufshcd_keep_autobkops_enabled_except_suspend(
762 return hba
->caps
& UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND
;
765 extern int ufshcd_runtime_suspend(struct ufs_hba
*hba
);
766 extern int ufshcd_runtime_resume(struct ufs_hba
*hba
);
767 extern int ufshcd_runtime_idle(struct ufs_hba
*hba
);
768 extern int ufshcd_system_suspend(struct ufs_hba
*hba
);
769 extern int ufshcd_system_resume(struct ufs_hba
*hba
);
770 extern int ufshcd_shutdown(struct ufs_hba
*hba
);
771 extern int ufshcd_dme_set_attr(struct ufs_hba
*hba
, u32 attr_sel
,
772 u8 attr_set
, u32 mib_val
, u8 peer
);
773 extern int ufshcd_dme_get_attr(struct ufs_hba
*hba
, u32 attr_sel
,
774 u32
*mib_val
, u8 peer
);
776 /* UIC command interfaces for DME primitives */
779 #define ATTR_SET_NOR 0 /* NORMAL */
780 #define ATTR_SET_ST 1 /* STATIC */
782 static inline int ufshcd_dme_set(struct ufs_hba
*hba
, u32 attr_sel
,
785 return ufshcd_dme_set_attr(hba
, attr_sel
, ATTR_SET_NOR
,
789 static inline int ufshcd_dme_st_set(struct ufs_hba
*hba
, u32 attr_sel
,
792 return ufshcd_dme_set_attr(hba
, attr_sel
, ATTR_SET_ST
,
796 static inline int ufshcd_dme_peer_set(struct ufs_hba
*hba
, u32 attr_sel
,
799 return ufshcd_dme_set_attr(hba
, attr_sel
, ATTR_SET_NOR
,
803 static inline int ufshcd_dme_peer_st_set(struct ufs_hba
*hba
, u32 attr_sel
,
806 return ufshcd_dme_set_attr(hba
, attr_sel
, ATTR_SET_ST
,
810 static inline int ufshcd_dme_get(struct ufs_hba
*hba
,
811 u32 attr_sel
, u32
*mib_val
)
813 return ufshcd_dme_get_attr(hba
, attr_sel
, mib_val
, DME_LOCAL
);
816 static inline int ufshcd_dme_peer_get(struct ufs_hba
*hba
,
817 u32 attr_sel
, u32
*mib_val
)
819 return ufshcd_dme_get_attr(hba
, attr_sel
, mib_val
, DME_PEER
);
822 static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr
*pwr_info
)
824 return (pwr_info
->pwr_rx
== FAST_MODE
||
825 pwr_info
->pwr_rx
== FASTAUTO_MODE
) &&
826 (pwr_info
->pwr_tx
== FAST_MODE
||
827 pwr_info
->pwr_tx
== FASTAUTO_MODE
);
830 /* Expose Query-Request API */
831 int ufshcd_query_flag(struct ufs_hba
*hba
, enum query_opcode opcode
,
832 enum flag_idn idn
, bool *flag_res
);
833 int ufshcd_hold(struct ufs_hba
*hba
, bool async
);
834 void ufshcd_release(struct ufs_hba
*hba
);
835 u32
ufshcd_get_local_unipro_ver(struct ufs_hba
*hba
);
837 /* Wrapper functions for safely calling variant operations */
838 static inline const char *ufshcd_get_var_name(struct ufs_hba
*hba
)
841 return hba
->vops
->name
;
845 static inline int ufshcd_vops_init(struct ufs_hba
*hba
)
847 if (hba
->vops
&& hba
->vops
->init
)
848 return hba
->vops
->init(hba
);
853 static inline void ufshcd_vops_exit(struct ufs_hba
*hba
)
855 if (hba
->vops
&& hba
->vops
->exit
)
856 return hba
->vops
->exit(hba
);
859 static inline u32
ufshcd_vops_get_ufs_hci_version(struct ufs_hba
*hba
)
861 if (hba
->vops
&& hba
->vops
->get_ufs_hci_version
)
862 return hba
->vops
->get_ufs_hci_version(hba
);
864 return ufshcd_readl(hba
, REG_UFS_VERSION
);
867 static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba
*hba
,
868 bool up
, enum ufs_notify_change_status status
)
870 if (hba
->vops
&& hba
->vops
->clk_scale_notify
)
871 return hba
->vops
->clk_scale_notify(hba
, up
, status
);
875 static inline int ufshcd_vops_setup_clocks(struct ufs_hba
*hba
, bool on
,
876 enum ufs_notify_change_status status
)
878 if (hba
->vops
&& hba
->vops
->setup_clocks
)
879 return hba
->vops
->setup_clocks(hba
, on
, status
);
883 static inline int ufshcd_vops_setup_regulators(struct ufs_hba
*hba
, bool status
)
885 if (hba
->vops
&& hba
->vops
->setup_regulators
)
886 return hba
->vops
->setup_regulators(hba
, status
);
891 static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba
*hba
,
894 if (hba
->vops
&& hba
->vops
->hce_enable_notify
)
895 return hba
->vops
->hce_enable_notify(hba
, status
);
899 static inline int ufshcd_vops_link_startup_notify(struct ufs_hba
*hba
,
902 if (hba
->vops
&& hba
->vops
->link_startup_notify
)
903 return hba
->vops
->link_startup_notify(hba
, status
);
908 static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba
*hba
,
910 struct ufs_pa_layer_attr
*dev_max_params
,
911 struct ufs_pa_layer_attr
*dev_req_params
)
913 if (hba
->vops
&& hba
->vops
->pwr_change_notify
)
914 return hba
->vops
->pwr_change_notify(hba
, status
,
915 dev_max_params
, dev_req_params
);
920 static inline void ufshcd_vops_setup_xfer_req(struct ufs_hba
*hba
, int tag
,
923 if (hba
->vops
&& hba
->vops
->setup_xfer_req
)
924 return hba
->vops
->setup_xfer_req(hba
, tag
, is_scsi_cmd
);
927 static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba
*hba
,
928 int tag
, u8 tm_function
)
930 if (hba
->vops
&& hba
->vops
->setup_task_mgmt
)
931 return hba
->vops
->setup_task_mgmt(hba
, tag
, tm_function
);
934 static inline void ufshcd_vops_hibern8_notify(struct ufs_hba
*hba
,
935 enum uic_cmd_dme cmd
,
936 enum ufs_notify_change_status status
)
938 if (hba
->vops
&& hba
->vops
->hibern8_notify
)
939 return hba
->vops
->hibern8_notify(hba
, cmd
, status
);
942 static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba
*hba
)
944 if (hba
->vops
&& hba
->vops
->apply_dev_quirks
)
945 return hba
->vops
->apply_dev_quirks(hba
);
949 static inline int ufshcd_vops_suspend(struct ufs_hba
*hba
, enum ufs_pm_op op
)
951 if (hba
->vops
&& hba
->vops
->suspend
)
952 return hba
->vops
->suspend(hba
, op
);
957 static inline int ufshcd_vops_resume(struct ufs_hba
*hba
, enum ufs_pm_op op
)
959 if (hba
->vops
&& hba
->vops
->resume
)
960 return hba
->vops
->resume(hba
, op
);
965 static inline void ufshcd_vops_dbg_register_dump(struct ufs_hba
*hba
)
967 if (hba
->vops
&& hba
->vops
->dbg_register_dump
)
968 hba
->vops
->dbg_register_dump(hba
);
971 #endif /* End of Header */