1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 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. 6 * 7 * Authors: 8 * Santosh Yaraganavi <santosh.sy@samsung.com> 9 * Vinayak Holikatti <h.vinayak@samsung.com> 10 */ 11 12 #ifndef _UFSHCD_H 13 #define _UFSHCD_H 14 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/fault-inject.h> 20 #include <linux/debugfs.h> 21 #include <linux/msi.h> 22 #include <linux/pm_runtime.h> 23 #include <linux/dma-direction.h> 24 #include <scsi/scsi_device.h> 25 #include <scsi/scsi_host.h> 26 #include <ufs/unipro.h> 27 #include <ufs/ufs.h> 28 #include <ufs/ufs_quirks.h> 29 #include <ufs/ufshci.h> 30 31 #define UFSHCD "ufshcd" 32 33 struct scsi_device; 34 struct ufs_hba; 35 36 enum dev_cmd_type { 37 DEV_CMD_TYPE_NOP = 0x0, 38 DEV_CMD_TYPE_QUERY = 0x1, 39 DEV_CMD_TYPE_RPMB = 0x2, 40 }; 41 42 enum ufs_event_type { 43 /* uic specific errors */ 44 UFS_EVT_PA_ERR = 0, 45 UFS_EVT_DL_ERR, 46 UFS_EVT_NL_ERR, 47 UFS_EVT_TL_ERR, 48 UFS_EVT_DME_ERR, 49 50 /* fatal errors */ 51 UFS_EVT_AUTO_HIBERN8_ERR, 52 UFS_EVT_FATAL_ERR, 53 UFS_EVT_LINK_STARTUP_FAIL, 54 UFS_EVT_RESUME_ERR, 55 UFS_EVT_SUSPEND_ERR, 56 UFS_EVT_WL_SUSP_ERR, 57 UFS_EVT_WL_RES_ERR, 58 59 /* abnormal events */ 60 UFS_EVT_DEV_RESET, 61 UFS_EVT_HOST_RESET, 62 UFS_EVT_ABORT, 63 64 UFS_EVT_CNT, 65 }; 66 67 /** 68 * struct uic_command - UIC command structure 69 * @command: UIC command 70 * @argument1: UIC command argument 1 71 * @argument2: UIC command argument 2 72 * @argument3: UIC command argument 3 73 * @cmd_active: Indicate if UIC command is outstanding 74 * @done: UIC command completion 75 */ 76 struct uic_command { 77 const u32 command; 78 const u32 argument1; 79 u32 argument2; 80 u32 argument3; 81 int cmd_active; 82 struct completion done; 83 }; 84 85 /* Used to differentiate the power management options */ 86 enum ufs_pm_op { 87 UFS_RUNTIME_PM, 88 UFS_SYSTEM_PM, 89 UFS_SHUTDOWN_PM, 90 }; 91 92 /* Host <-> Device UniPro Link state */ 93 enum uic_link_state { 94 UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */ 95 UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */ 96 UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */ 97 UIC_LINK_BROKEN_STATE = 3, /* Link is in broken state */ 98 }; 99 100 #define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE) 101 #define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \ 102 UIC_LINK_ACTIVE_STATE) 103 #define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \ 104 UIC_LINK_HIBERN8_STATE) 105 #define ufshcd_is_link_broken(hba) ((hba)->uic_link_state == \ 106 UIC_LINK_BROKEN_STATE) 107 #define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE) 108 #define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \ 109 UIC_LINK_ACTIVE_STATE) 110 #define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \ 111 UIC_LINK_HIBERN8_STATE) 112 #define ufshcd_set_link_broken(hba) ((hba)->uic_link_state = \ 113 UIC_LINK_BROKEN_STATE) 114 115 #define ufshcd_set_ufs_dev_active(h) \ 116 ((h)->curr_dev_pwr_mode = UFS_ACTIVE_PWR_MODE) 117 #define ufshcd_set_ufs_dev_sleep(h) \ 118 ((h)->curr_dev_pwr_mode = UFS_SLEEP_PWR_MODE) 119 #define ufshcd_set_ufs_dev_poweroff(h) \ 120 ((h)->curr_dev_pwr_mode = UFS_POWERDOWN_PWR_MODE) 121 #define ufshcd_set_ufs_dev_deepsleep(h) \ 122 ((h)->curr_dev_pwr_mode = UFS_DEEPSLEEP_PWR_MODE) 123 #define ufshcd_is_ufs_dev_active(h) \ 124 ((h)->curr_dev_pwr_mode == UFS_ACTIVE_PWR_MODE) 125 #define ufshcd_is_ufs_dev_sleep(h) \ 126 ((h)->curr_dev_pwr_mode == UFS_SLEEP_PWR_MODE) 127 #define ufshcd_is_ufs_dev_poweroff(h) \ 128 ((h)->curr_dev_pwr_mode == UFS_POWERDOWN_PWR_MODE) 129 #define ufshcd_is_ufs_dev_deepsleep(h) \ 130 ((h)->curr_dev_pwr_mode == UFS_DEEPSLEEP_PWR_MODE) 131 132 /* 133 * UFS Power management levels. 134 * Each level is in increasing order of power savings, except DeepSleep 135 * which is lower than PowerDown with power on but not PowerDown with 136 * power off. 137 */ 138 enum ufs_pm_level { 139 UFS_PM_LVL_0, 140 UFS_PM_LVL_1, 141 UFS_PM_LVL_2, 142 UFS_PM_LVL_3, 143 UFS_PM_LVL_4, 144 UFS_PM_LVL_5, 145 UFS_PM_LVL_6, 146 UFS_PM_LVL_MAX 147 }; 148 149 struct ufs_pm_lvl_states { 150 enum ufs_dev_pwr_mode dev_state; 151 enum uic_link_state link_state; 152 }; 153 154 /** 155 * struct ufshcd_lrb - local reference block 156 * @utr_descriptor_ptr: UTRD address of the command 157 * @ucd_req_ptr: UCD address of the command 158 * @ucd_rsp_ptr: Response UPIU address for this command 159 * @ucd_prdt_ptr: PRDT address of the command 160 * @utrd_dma_addr: UTRD dma address for debug 161 * @ucd_prdt_dma_addr: PRDT dma address for debug 162 * @ucd_rsp_dma_addr: UPIU response dma address for debug 163 * @ucd_req_dma_addr: UPIU request dma address for debug 164 * @cmd: pointer to SCSI command 165 * @scsi_status: SCSI status of the command 166 * @command_type: SCSI, UFS, Query. 167 * @task_tag: Task tag of the command 168 * @lun: LUN of the command 169 * @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation) 170 * @req_abort_skip: skip request abort task flag 171 * @issue_time_stamp: time stamp for debug purposes (CLOCK_MONOTONIC) 172 * @issue_time_stamp_local_clock: time stamp for debug purposes (local_clock) 173 * @compl_time_stamp: time stamp for statistics (CLOCK_MONOTONIC) 174 * @compl_time_stamp_local_clock: time stamp for debug purposes (local_clock) 175 * @crypto_key_slot: the key slot to use for inline crypto (-1 if none) 176 * @data_unit_num: the data unit number for the first block for inline crypto 177 */ 178 struct ufshcd_lrb { 179 struct utp_transfer_req_desc *utr_descriptor_ptr; 180 struct utp_upiu_req *ucd_req_ptr; 181 struct utp_upiu_rsp *ucd_rsp_ptr; 182 struct ufshcd_sg_entry *ucd_prdt_ptr; 183 184 dma_addr_t utrd_dma_addr; 185 dma_addr_t ucd_req_dma_addr; 186 dma_addr_t ucd_rsp_dma_addr; 187 dma_addr_t ucd_prdt_dma_addr; 188 189 struct scsi_cmnd *cmd; 190 int scsi_status; 191 192 int command_type; 193 int task_tag; 194 u8 lun; /* UPIU LUN id field is only 8-bit wide */ 195 bool intr_cmd; 196 bool req_abort_skip; 197 ktime_t issue_time_stamp; 198 u64 issue_time_stamp_local_clock; 199 ktime_t compl_time_stamp; 200 u64 compl_time_stamp_local_clock; 201 #ifdef CONFIG_SCSI_UFS_CRYPTO 202 int crypto_key_slot; 203 u64 data_unit_num; 204 #endif 205 }; 206 207 /** 208 * struct ufs_query_req - parameters for building a query request 209 * @query_func: UPIU header query function 210 * @upiu_req: the query request data 211 */ 212 struct ufs_query_req { 213 u8 query_func; 214 struct utp_upiu_query upiu_req; 215 }; 216 217 /** 218 * struct ufs_query_resp - UPIU QUERY 219 * @response: device response code 220 * @upiu_res: query response data 221 */ 222 struct ufs_query_res { 223 struct utp_upiu_query upiu_res; 224 }; 225 226 /** 227 * struct ufs_query - holds relevant data structures for query request 228 * @request: request upiu and function 229 * @descriptor: buffer for sending/receiving descriptor 230 * @response: response upiu and response 231 */ 232 struct ufs_query { 233 struct ufs_query_req request; 234 u8 *descriptor; 235 struct ufs_query_res response; 236 }; 237 238 /** 239 * struct ufs_dev_cmd - all assosiated fields with device management commands 240 * @type: device management command type - Query, NOP OUT 241 * @lock: lock to allow one command at a time 242 * @complete: internal commands completion 243 * @query: Device management query information 244 */ 245 struct ufs_dev_cmd { 246 enum dev_cmd_type type; 247 struct mutex lock; 248 struct completion complete; 249 struct ufs_query query; 250 }; 251 252 /** 253 * struct ufs_clk_info - UFS clock related info 254 * @list: list headed by hba->clk_list_head 255 * @clk: clock node 256 * @name: clock name 257 * @max_freq: maximum frequency supported by the clock 258 * @min_freq: min frequency that can be used for clock scaling 259 * @curr_freq: indicates the current frequency that it is set to 260 * @keep_link_active: indicates that the clk should not be disabled if 261 * link is active 262 * @enabled: variable to check against multiple enable/disable 263 */ 264 struct ufs_clk_info { 265 struct list_head list; 266 struct clk *clk; 267 const char *name; 268 u32 max_freq; 269 u32 min_freq; 270 u32 curr_freq; 271 bool keep_link_active; 272 bool enabled; 273 }; 274 275 enum ufs_notify_change_status { 276 PRE_CHANGE, 277 POST_CHANGE, 278 }; 279 280 struct ufs_pa_layer_attr { 281 u32 gear_rx; 282 u32 gear_tx; 283 u32 lane_rx; 284 u32 lane_tx; 285 u32 pwr_rx; 286 u32 pwr_tx; 287 u32 hs_rate; 288 }; 289 290 struct ufs_pwr_mode_info { 291 bool is_valid; 292 struct ufs_pa_layer_attr info; 293 }; 294 295 /** 296 * struct ufs_hba_variant_ops - variant specific callbacks 297 * @name: variant name 298 * @max_num_rtt: maximum RTT supported by the host 299 * @init: called when the driver is initialized 300 * @exit: called to cleanup everything done in init 301 * @set_dma_mask: For setting another DMA mask than indicated by the 64AS 302 * capability bit. 303 * @get_ufs_hci_version: called to get UFS HCI version 304 * @clk_scale_notify: notifies that clks are scaled up/down 305 * @setup_clocks: called before touching any of the controller registers 306 * @hce_enable_notify: called before and after HCE enable bit is set to allow 307 * variant specific Uni-Pro initialization. 308 * @link_startup_notify: called before and after Link startup is carried out 309 * to allow variant specific Uni-Pro initialization. 310 * @pwr_change_notify: called before and after a power mode change 311 * is carried out to allow vendor spesific capabilities 312 * to be set. PRE_CHANGE can modify final_params based 313 * on desired_pwr_mode, but POST_CHANGE must not alter 314 * the final_params parameter 315 * @setup_xfer_req: called before any transfer request is issued 316 * to set some things 317 * @setup_task_mgmt: called before any task management request is issued 318 * to set some things 319 * @hibern8_notify: called around hibern8 enter/exit 320 * @apply_dev_quirks: called to apply device specific quirks 321 * @fixup_dev_quirks: called to modify device specific quirks 322 * @suspend: called during host controller PM callback 323 * @resume: called during host controller PM callback 324 * @dbg_register_dump: used to dump controller debug information 325 * @phy_initialization: used to initialize phys 326 * @device_reset: called to issue a reset pulse on the UFS device 327 * @config_scaling_param: called to configure clock scaling parameters 328 * @fill_crypto_prdt: initialize crypto-related fields in the PRDT 329 * @event_notify: called to notify important events 330 * @mcq_config_resource: called to configure MCQ platform resources 331 * @get_hba_mac: reports maximum number of outstanding commands supported by 332 * the controller. Should be implemented for UFSHCI 4.0 or later 333 * controllers that are not compliant with the UFSHCI 4.0 specification. 334 * @op_runtime_config: called to config Operation and runtime regs Pointers 335 * @get_outstanding_cqs: called to get outstanding completion queues 336 * @config_esi: called to config Event Specific Interrupt 337 * @config_scsi_dev: called to configure SCSI device parameters 338 * @freq_to_gear_speed: called to map clock frequency to the max supported gear speed 339 */ 340 struct ufs_hba_variant_ops { 341 const char *name; 342 int max_num_rtt; 343 int (*init)(struct ufs_hba *); 344 void (*exit)(struct ufs_hba *); 345 u32 (*get_ufs_hci_version)(struct ufs_hba *); 346 int (*set_dma_mask)(struct ufs_hba *); 347 int (*clk_scale_notify)(struct ufs_hba *, bool, unsigned long, 348 enum ufs_notify_change_status); 349 int (*setup_clocks)(struct ufs_hba *, bool, 350 enum ufs_notify_change_status); 351 int (*hce_enable_notify)(struct ufs_hba *, 352 enum ufs_notify_change_status); 353 int (*link_startup_notify)(struct ufs_hba *, 354 enum ufs_notify_change_status); 355 int (*pwr_change_notify)(struct ufs_hba *, 356 enum ufs_notify_change_status status, 357 const struct ufs_pa_layer_attr *desired_pwr_mode, 358 struct ufs_pa_layer_attr *final_params); 359 void (*setup_xfer_req)(struct ufs_hba *hba, int tag, 360 bool is_scsi_cmd); 361 void (*setup_task_mgmt)(struct ufs_hba *, int, u8); 362 void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme, 363 enum ufs_notify_change_status); 364 int (*apply_dev_quirks)(struct ufs_hba *hba); 365 void (*fixup_dev_quirks)(struct ufs_hba *hba); 366 int (*suspend)(struct ufs_hba *, enum ufs_pm_op, 367 enum ufs_notify_change_status); 368 int (*resume)(struct ufs_hba *, enum ufs_pm_op); 369 void (*dbg_register_dump)(struct ufs_hba *hba); 370 int (*phy_initialization)(struct ufs_hba *); 371 int (*device_reset)(struct ufs_hba *hba); 372 void (*config_scaling_param)(struct ufs_hba *hba, 373 struct devfreq_dev_profile *profile, 374 struct devfreq_simple_ondemand_data *data); 375 int (*fill_crypto_prdt)(struct ufs_hba *hba, 376 const struct bio_crypt_ctx *crypt_ctx, 377 void *prdt, unsigned int num_segments); 378 void (*event_notify)(struct ufs_hba *hba, 379 enum ufs_event_type evt, void *data); 380 int (*mcq_config_resource)(struct ufs_hba *hba); 381 int (*get_hba_mac)(struct ufs_hba *hba); 382 int (*op_runtime_config)(struct ufs_hba *hba); 383 int (*get_outstanding_cqs)(struct ufs_hba *hba, 384 unsigned long *ocqs); 385 int (*config_esi)(struct ufs_hba *hba); 386 void (*config_scsi_dev)(struct scsi_device *sdev); 387 u32 (*freq_to_gear_speed)(struct ufs_hba *hba, unsigned long freq); 388 }; 389 390 /* clock gating state */ 391 enum clk_gating_state { 392 CLKS_OFF, 393 CLKS_ON, 394 REQ_CLKS_OFF, 395 REQ_CLKS_ON, 396 }; 397 398 /** 399 * struct ufs_clk_gating - UFS clock gating related info 400 * @gate_work: worker to turn off clocks after some delay as specified in 401 * delay_ms 402 * @ungate_work: worker to turn on clocks that will be used in case of 403 * interrupt context 404 * @clk_gating_workq: workqueue for clock gating work. 405 * @lock: serialize access to some struct ufs_clk_gating members. An outer lock 406 * relative to the host lock 407 * @state: the current clocks state 408 * @delay_ms: gating delay in ms 409 * @is_suspended: clk gating is suspended when set to 1 which can be used 410 * during suspend/resume 411 * @delay_attr: sysfs attribute to control delay_attr 412 * @enable_attr: sysfs attribute to enable/disable clock gating 413 * @is_enabled: Indicates the current status of clock gating 414 * @is_initialized: Indicates whether clock gating is initialized or not 415 * @active_reqs: number of requests that are pending and should be waited for 416 * completion before gating clocks. 417 */ 418 struct ufs_clk_gating { 419 struct delayed_work gate_work; 420 struct work_struct ungate_work; 421 struct workqueue_struct *clk_gating_workq; 422 423 spinlock_t lock; 424 425 enum clk_gating_state state; 426 unsigned long delay_ms; 427 bool is_suspended; 428 struct device_attribute delay_attr; 429 struct device_attribute enable_attr; 430 bool is_enabled; 431 bool is_initialized; 432 int active_reqs; 433 }; 434 435 /** 436 * struct ufs_clk_scaling - UFS clock scaling related data 437 * @workq: workqueue to schedule devfreq suspend/resume work 438 * @suspend_work: worker to suspend devfreq 439 * @resume_work: worker to resume devfreq 440 * @lock: serialize access to some struct ufs_clk_scaling members 441 * @active_reqs: number of requests that are pending. If this is zero when 442 * devfreq ->target() function is called then schedule "suspend_work" to 443 * suspend devfreq. 444 * @tot_busy_t: Total busy time in current polling window 445 * @window_start_t: Start time (in jiffies) of the current polling window 446 * @busy_start_t: Start time of current busy period 447 * @enable_attr: sysfs attribute to enable/disable clock scaling 448 * @saved_pwr_info: UFS power mode may also be changed during scaling and this 449 * one keeps track of previous power mode. 450 * @target_freq: frequency requested by devfreq framework 451 * @min_gear: lowest HS gear to scale down to 452 * @wb_gear: enable Write Booster when HS gear scales above or equal to it, else 453 * disable Write Booster 454 * @is_enabled: tracks if scaling is currently enabled or not, controlled by 455 * clkscale_enable sysfs node 456 * @is_allowed: tracks if scaling is currently allowed or not, used to block 457 * clock scaling which is not invoked from devfreq governor 458 * @is_initialized: Indicates whether clock scaling is initialized or not 459 * @is_busy_started: tracks if busy period has started or not 460 * @is_suspended: tracks if devfreq is suspended or not 461 */ 462 struct ufs_clk_scaling { 463 struct workqueue_struct *workq; 464 struct work_struct suspend_work; 465 struct work_struct resume_work; 466 467 spinlock_t lock; 468 469 int active_reqs; 470 unsigned long tot_busy_t; 471 ktime_t window_start_t; 472 ktime_t busy_start_t; 473 struct device_attribute enable_attr; 474 struct ufs_pa_layer_attr saved_pwr_info; 475 unsigned long target_freq; 476 u32 min_gear; 477 u32 wb_gear; 478 bool is_enabled; 479 bool is_allowed; 480 bool is_initialized; 481 bool is_busy_started; 482 bool is_suspended; 483 bool suspend_on_no_request; 484 }; 485 486 #define UFS_EVENT_HIST_LENGTH 8 487 /** 488 * struct ufs_event_hist - keeps history of errors 489 * @pos: index to indicate cyclic buffer position 490 * @val: cyclic buffer for registers value 491 * @tstamp: cyclic buffer for time stamp 492 * @cnt: error counter 493 */ 494 struct ufs_event_hist { 495 int pos; 496 u32 val[UFS_EVENT_HIST_LENGTH]; 497 u64 tstamp[UFS_EVENT_HIST_LENGTH]; 498 unsigned long long cnt; 499 }; 500 501 /** 502 * struct ufs_stats - keeps usage/err statistics 503 * @hibern8_exit_cnt: Counter to keep track of number of exits, 504 * reset this after link-startup. 505 * @last_hibern8_exit_tstamp: Set time after the hibern8 exit. 506 * Clear after the first successful command completion. 507 * @event: array with event history. 508 */ 509 struct ufs_stats { 510 u32 hibern8_exit_cnt; 511 u64 last_hibern8_exit_tstamp; 512 struct ufs_event_hist event[UFS_EVT_CNT]; 513 }; 514 515 /** 516 * enum ufshcd_state - UFS host controller state 517 * @UFSHCD_STATE_RESET: Link is not operational. Postpone SCSI command 518 * processing. 519 * @UFSHCD_STATE_OPERATIONAL: The host controller is operational and can process 520 * SCSI commands. 521 * @UFSHCD_STATE_EH_SCHEDULED_NON_FATAL: The error handler has been scheduled. 522 * SCSI commands may be submitted to the controller. 523 * @UFSHCD_STATE_EH_SCHEDULED_FATAL: The error handler has been scheduled. Fail 524 * newly submitted SCSI commands with error code DID_BAD_TARGET. 525 * @UFSHCD_STATE_ERROR: An unrecoverable error occurred, e.g. link recovery 526 * failed. Fail all SCSI commands with error code DID_ERROR. 527 */ 528 enum ufshcd_state { 529 UFSHCD_STATE_RESET, 530 UFSHCD_STATE_OPERATIONAL, 531 UFSHCD_STATE_EH_SCHEDULED_NON_FATAL, 532 UFSHCD_STATE_EH_SCHEDULED_FATAL, 533 UFSHCD_STATE_ERROR, 534 }; 535 536 enum ufshcd_quirks { 537 /* Interrupt aggregation support is broken */ 538 UFSHCD_QUIRK_BROKEN_INTR_AGGR = 1 << 0, 539 540 /* 541 * delay before each dme command is required as the unipro 542 * layer has shown instabilities 543 */ 544 UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS = 1 << 1, 545 546 /* 547 * If UFS host controller is having issue in processing LCC (Line 548 * Control Command) coming from device then enable this quirk. 549 * When this quirk is enabled, host controller driver should disable 550 * the LCC transmission on UFS device (by clearing TX_LCC_ENABLE 551 * attribute of device to 0). 552 */ 553 UFSHCD_QUIRK_BROKEN_LCC = 1 << 2, 554 555 /* 556 * The attribute PA_RXHSUNTERMCAP specifies whether or not the 557 * inbound Link supports unterminated line in HS mode. Setting this 558 * attribute to 1 fixes moving to HS gear. 559 */ 560 UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP = 1 << 3, 561 562 /* 563 * This quirk needs to be enabled if the host controller only allows 564 * accessing the peer dme attributes in AUTO mode (FAST AUTO or 565 * SLOW AUTO). 566 */ 567 UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE = 1 << 4, 568 569 /* 570 * This quirk needs to be enabled if the host controller doesn't 571 * advertise the correct version in UFS_VER register. If this quirk 572 * is enabled, standard UFS host driver will call the vendor specific 573 * ops (get_ufs_hci_version) to get the correct version. 574 */ 575 UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION = 1 << 5, 576 577 /* 578 * Clear handling for transfer/task request list is just opposite. 579 */ 580 UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR = 1 << 6, 581 582 /* 583 * This quirk needs to be enabled if host controller doesn't allow 584 * that the interrupt aggregation timer and counter are reset by s/w. 585 */ 586 UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR = 1 << 7, 587 588 /* 589 * This quirks needs to be enabled if host controller cannot be 590 * enabled via HCE register. 591 */ 592 UFSHCI_QUIRK_BROKEN_HCE = 1 << 8, 593 594 /* 595 * This quirk needs to be enabled if the host controller regards 596 * resolution of the values of PRDTO and PRDTL in UTRD as byte. 597 */ 598 UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9, 599 600 /* 601 * This quirk needs to be enabled if the host controller reports 602 * OCS FATAL ERROR with device error through sense data 603 */ 604 UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR = 1 << 10, 605 606 /* 607 * This quirk needs to be enabled if the host controller has 608 * auto-hibernate capability but it doesn't work. 609 */ 610 UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8 = 1 << 11, 611 612 /* 613 * This quirk needs to disable manual flush for write booster 614 */ 615 UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL = 1 << 12, 616 617 /* 618 * This quirk needs to disable unipro timeout values 619 * before power mode change 620 */ 621 UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING = 1 << 13, 622 623 /* 624 * This quirk needs to be enabled if the host controller does not 625 * support UIC command 626 */ 627 UFSHCD_QUIRK_BROKEN_UIC_CMD = 1 << 15, 628 629 /* 630 * This quirk needs to be enabled if the host controller cannot 631 * support physical host configuration. 632 */ 633 UFSHCD_QUIRK_SKIP_PH_CONFIGURATION = 1 << 16, 634 635 /* 636 * This quirk needs to be enabled if the host controller has 637 * auto-hibernate capability but it's FASTAUTO only. 638 */ 639 UFSHCD_QUIRK_HIBERN_FASTAUTO = 1 << 18, 640 641 /* 642 * This quirk needs to be enabled if the host controller needs 643 * to reinit the device after switching to maximum gear. 644 */ 645 UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH = 1 << 19, 646 647 /* 648 * Some host raises interrupt (per queue) in addition to 649 * CQES (traditional) when ESI is disabled. 650 * Enable this quirk will disable CQES and use per queue interrupt. 651 */ 652 UFSHCD_QUIRK_MCQ_BROKEN_INTR = 1 << 20, 653 654 /* 655 * Some host does not implement SQ Run Time Command (SQRTC) register 656 * thus need this quirk to skip related flow. 657 */ 658 UFSHCD_QUIRK_MCQ_BROKEN_RTC = 1 << 21, 659 660 /* 661 * This quirk needs to be enabled if the host controller supports inline 662 * encryption but it needs to initialize the crypto capabilities in a 663 * nonstandard way and/or needs to override blk_crypto_ll_ops. If 664 * enabled, the standard code won't initialize the blk_crypto_profile; 665 * ufs_hba_variant_ops::init() must do it instead. 666 */ 667 UFSHCD_QUIRK_CUSTOM_CRYPTO_PROFILE = 1 << 22, 668 669 /* 670 * This quirk needs to be enabled if the host controller supports inline 671 * encryption but does not support the CRYPTO_GENERAL_ENABLE bit, i.e. 672 * host controller initialization fails if that bit is set. 673 */ 674 UFSHCD_QUIRK_BROKEN_CRYPTO_ENABLE = 1 << 23, 675 676 /* 677 * This quirk needs to be enabled if the host controller driver copies 678 * cryptographic keys into the PRDT in order to send them to hardware, 679 * and therefore the PRDT should be zeroized after each request (as per 680 * the standard best practice for managing keys). 681 */ 682 UFSHCD_QUIRK_KEYS_IN_PRDT = 1 << 24, 683 684 /* 685 * This quirk indicates that the controller reports the value 1 (not 686 * supported) in the Legacy Single DoorBell Support (LSDBS) bit of the 687 * Controller Capabilities register although it supports the legacy 688 * single doorbell mode. 689 */ 690 UFSHCD_QUIRK_BROKEN_LSDBS_CAP = 1 << 25, 691 692 /* 693 * This quirk indicates that DME_LINKSTARTUP should not be issued a 2nd 694 * time (refer link_startup_again) after the 1st time was successful, 695 * because it causes link startup to become unreliable. 696 */ 697 UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE = 1 << 26, 698 }; 699 700 enum ufshcd_caps { 701 /* Allow dynamic clk gating */ 702 UFSHCD_CAP_CLK_GATING = 1 << 0, 703 704 /* Allow hiberb8 with clk gating */ 705 UFSHCD_CAP_HIBERN8_WITH_CLK_GATING = 1 << 1, 706 707 /* Allow dynamic clk scaling */ 708 UFSHCD_CAP_CLK_SCALING = 1 << 2, 709 710 /* Allow auto bkops to enabled during runtime suspend */ 711 UFSHCD_CAP_AUTO_BKOPS_SUSPEND = 1 << 3, 712 713 /* 714 * This capability allows host controller driver to use the UFS HCI's 715 * interrupt aggregation capability. 716 * CAUTION: Enabling this might reduce overall UFS throughput. 717 */ 718 UFSHCD_CAP_INTR_AGGR = 1 << 4, 719 720 /* 721 * This capability allows the device auto-bkops to be always enabled 722 * except during suspend (both runtime and suspend). 723 * Enabling this capability means that device will always be allowed 724 * to do background operation when it's active but it might degrade 725 * the performance of ongoing read/write operations. 726 */ 727 UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND = 1 << 5, 728 729 /* 730 * This capability allows host controller driver to automatically 731 * enable runtime power management by itself instead of waiting 732 * for userspace to control the power management. 733 */ 734 UFSHCD_CAP_RPM_AUTOSUSPEND = 1 << 6, 735 736 /* 737 * This capability allows the host controller driver to turn-on 738 * WriteBooster, if the underlying device supports it and is 739 * provisioned to be used. This would increase the write performance. 740 */ 741 UFSHCD_CAP_WB_EN = 1 << 7, 742 743 /* 744 * This capability allows the host controller driver to use the 745 * inline crypto engine, if it is present 746 */ 747 UFSHCD_CAP_CRYPTO = 1 << 8, 748 749 /* 750 * This capability allows the controller regulators to be put into 751 * lpm mode aggressively during clock gating. 752 * This would increase power savings. 753 */ 754 UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9, 755 756 /* 757 * This capability allows the host controller driver to use DeepSleep, 758 * if it is supported by the UFS device. The host controller driver must 759 * support device hardware reset via the hba->device_reset() callback, 760 * in order to exit DeepSleep state. 761 */ 762 UFSHCD_CAP_DEEPSLEEP = 1 << 10, 763 764 /* 765 * This capability allows the host controller driver to use temperature 766 * notification if it is supported by the UFS device. 767 */ 768 UFSHCD_CAP_TEMP_NOTIF = 1 << 11, 769 770 /* 771 * Enable WriteBooster when scaling up the clock and disable 772 * WriteBooster when scaling the clock down. 773 */ 774 UFSHCD_CAP_WB_WITH_CLK_SCALING = 1 << 12, 775 }; 776 777 struct ufs_hba_variant_params { 778 struct devfreq_dev_profile devfreq_profile; 779 struct devfreq_simple_ondemand_data ondemand_data; 780 u16 hba_enable_delay_us; 781 u32 wb_flush_threshold; 782 }; 783 784 struct ufs_hba_monitor { 785 unsigned long chunk_size; 786 787 unsigned long nr_sec_rw[2]; 788 ktime_t total_busy[2]; 789 790 unsigned long nr_req[2]; 791 /* latencies*/ 792 ktime_t lat_sum[2]; 793 ktime_t lat_max[2]; 794 ktime_t lat_min[2]; 795 796 u32 nr_queued[2]; 797 ktime_t busy_start_ts[2]; 798 799 ktime_t enabled_ts; 800 bool enabled; 801 }; 802 803 /** 804 * struct ufshcd_mcq_opr_info_t - Operation and Runtime registers 805 * 806 * @offset: Doorbell Address Offset 807 * @stride: Steps proportional to queue [0...31] 808 * @base: base address 809 */ 810 struct ufshcd_mcq_opr_info_t { 811 unsigned long offset; 812 unsigned long stride; 813 void __iomem *base; 814 }; 815 816 enum ufshcd_mcq_opr { 817 OPR_SQD, 818 OPR_SQIS, 819 OPR_CQD, 820 OPR_CQIS, 821 OPR_MAX, 822 }; 823 824 /** 825 * struct ufs_hba - per adapter private structure 826 * @mmio_base: UFSHCI base register address 827 * @ucdl_base_addr: UFS Command Descriptor base address 828 * @utrdl_base_addr: UTP Transfer Request Descriptor base address 829 * @utmrdl_base_addr: UTP Task Management Descriptor base address 830 * @ucdl_dma_addr: UFS Command Descriptor DMA address 831 * @utrdl_dma_addr: UTRDL DMA address 832 * @utmrdl_dma_addr: UTMRDL DMA address 833 * @host: Scsi_Host instance of the driver 834 * @dev: device handle 835 * @ufs_device_wlun: WLUN that controls the entire UFS device. 836 * @hwmon_device: device instance registered with the hwmon core. 837 * @curr_dev_pwr_mode: active UFS device power mode. 838 * @uic_link_state: active state of the link to the UFS device. 839 * @rpm_lvl: desired UFS power management level during runtime PM. 840 * @spm_lvl: desired UFS power management level during system PM. 841 * @pm_op_in_progress: whether or not a PM operation is in progress. 842 * @ahit: value of Auto-Hibernate Idle Timer register. 843 * @lrb: local reference block 844 * @outstanding_tasks: Bits representing outstanding task requests 845 * @outstanding_lock: Protects @outstanding_reqs. 846 * @outstanding_reqs: Bits representing outstanding transfer requests 847 * @capabilities: UFS Controller Capabilities 848 * @mcq_capabilities: UFS Multi Circular Queue capabilities 849 * @nutrs: Transfer Request Queue depth supported by controller 850 * @nortt - Max outstanding RTTs supported by controller 851 * @nutmrs: Task Management Queue depth supported by controller 852 * @reserved_slot: Used to submit device commands. Protected by @dev_cmd.lock. 853 * @ufs_version: UFS Version to which controller complies 854 * @vops: pointer to variant specific operations 855 * @vps: pointer to variant specific parameters 856 * @priv: pointer to variant specific private data 857 * @sg_entry_size: size of struct ufshcd_sg_entry (may include variant fields) 858 * @irq: Irq number of the controller 859 * @is_irq_enabled: whether or not the UFS controller interrupt is enabled. 860 * @dev_ref_clk_freq: reference clock frequency 861 * @quirks: bitmask with information about deviations from the UFSHCI standard. 862 * @dev_quirks: bitmask with information about deviations from the UFS standard. 863 * @tmf_tag_set: TMF tag set. 864 * @tmf_queue: Used to allocate TMF tags. 865 * @tmf_rqs: array with pointers to TMF requests while these are in progress. 866 * @active_uic_cmd: pointer to active UIC command. 867 * @uic_cmd_mutex: mutex used for serializing UIC command processing. 868 * @uic_async_done: completion used to wait for power mode or hibernation state 869 * changes. 870 * @ufshcd_state: UFSHCD state 871 * @eh_flags: Error handling flags 872 * @intr_mask: Interrupt Mask Bits 873 * @ee_ctrl_mask: Exception event control mask 874 * @ee_drv_mask: Exception event mask for driver 875 * @ee_usr_mask: Exception event mask for user (set via debugfs) 876 * @ee_ctrl_mutex: Used to serialize exception event information. 877 * @is_powered: flag to check if HBA is powered 878 * @shutting_down: flag to check if shutdown has been invoked 879 * @host_sem: semaphore used to serialize concurrent contexts 880 * @eh_wq: Workqueue that eh_work works on 881 * @eh_work: Worker to handle UFS errors that require s/w attention 882 * @eeh_work: Worker to handle exception events 883 * @errors: HBA errors 884 * @uic_error: UFS interconnect layer error status 885 * @saved_err: sticky error mask 886 * @saved_uic_err: sticky UIC error mask 887 * @ufs_stats: various error counters 888 * @force_reset: flag to force eh_work perform a full reset 889 * @force_pmc: flag to force a power mode change 890 * @silence_err_logs: flag to silence error logs 891 * @dev_cmd: ufs device management command information 892 * @last_dme_cmd_tstamp: time stamp of the last completed DME command 893 * @nop_out_timeout: NOP OUT timeout value 894 * @dev_info: information about the UFS device 895 * @auto_bkops_enabled: to track whether bkops is enabled in device 896 * @vreg_info: UFS device voltage regulator information 897 * @clk_list_head: UFS host controller clocks list node head 898 * @use_pm_opp: Indicates whether OPP based scaling is used or not 899 * @req_abort_count: number of times ufshcd_abort() has been called 900 * @lanes_per_direction: number of lanes per data direction between the UFS 901 * controller and the UFS device. 902 * @pwr_info: holds current power mode 903 * @max_pwr_info: keeps the device max valid pwm 904 * @clk_gating: information related to clock gating 905 * @caps: bitmask with information about UFS controller capabilities 906 * @devfreq: frequency scaling information owned by the devfreq core 907 * @clk_scaling: frequency scaling information owned by the UFS driver 908 * @system_suspending: system suspend has been started and system resume has 909 * not yet finished. 910 * @is_sys_suspended: UFS device has been suspended because of system suspend 911 * @urgent_bkops_lvl: keeps track of urgent bkops level for device 912 * @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for 913 * device is known or not. 914 * @wb_mutex: used to serialize devfreq and sysfs write booster toggling 915 * @clk_scaling_lock: used to serialize device commands and clock scaling 916 * @desc_size: descriptor sizes reported by device 917 * @bsg_dev: struct device associated with the BSG queue 918 * @bsg_queue: BSG queue associated with the UFS controller 919 * @rpm_dev_flush_recheck_work: used to suspend from RPM (runtime power 920 * management) after the UFS device has finished a WriteBooster buffer 921 * flush or auto BKOP. 922 * @monitor: statistics about UFS commands 923 * @crypto_capabilities: Content of crypto capabilities register (0x100) 924 * @crypto_cap_array: Array of crypto capabilities 925 * @crypto_cfg_register: Start of the crypto cfg array 926 * @crypto_profile: the crypto profile of this hba (if applicable) 927 * @debugfs_root: UFS controller debugfs root directory 928 * @debugfs_ee_work: used to restore ee_ctrl_mask after a delay 929 * @debugfs_ee_rate_limit_ms: user configurable delay after which to restore 930 * ee_ctrl_mask 931 * @luns_avail: number of regular and well known LUNs supported by the UFS 932 * device 933 * @nr_hw_queues: number of hardware queues configured 934 * @nr_queues: number of Queues of different queue types 935 * @complete_put: whether or not to call ufshcd_rpm_put() from inside 936 * ufshcd_resume_complete() 937 * @mcq_sup: is mcq supported by UFSHC 938 * @mcq_enabled: is mcq ready to accept requests 939 * @mcq_esi_enabled: is mcq ESI configured 940 * @res: array of resource info of MCQ registers 941 * @mcq_base: Multi circular queue registers base address 942 * @uhq: array of supported hardware queues 943 * @dev_cmd_queue: Queue for issuing device management commands 944 * @mcq_opr: MCQ operation and runtime registers 945 * @ufs_rtc_update_work: A work for UFS RTC periodic update 946 * @pm_qos_req: PM QoS request handle 947 * @pm_qos_enabled: flag to check if pm qos is enabled 948 * @pm_qos_mutex: synchronizes PM QoS request and status updates 949 * @critical_health_count: count of critical health exceptions 950 * @dev_lvl_exception_count: count of device level exceptions since last reset 951 * @dev_lvl_exception_id: vendor specific information about the 952 * device level exception event. 953 */ 954 struct ufs_hba { 955 void __iomem *mmio_base; 956 957 /* Virtual memory reference */ 958 struct utp_transfer_cmd_desc *ucdl_base_addr; 959 struct utp_transfer_req_desc *utrdl_base_addr; 960 struct utp_task_req_desc *utmrdl_base_addr; 961 962 /* DMA memory reference */ 963 dma_addr_t ucdl_dma_addr; 964 dma_addr_t utrdl_dma_addr; 965 dma_addr_t utmrdl_dma_addr; 966 967 struct Scsi_Host *host; 968 struct device *dev; 969 struct scsi_device *ufs_device_wlun; 970 971 #ifdef CONFIG_SCSI_UFS_HWMON 972 struct device *hwmon_device; 973 #endif 974 975 enum ufs_dev_pwr_mode curr_dev_pwr_mode; 976 enum uic_link_state uic_link_state; 977 /* Desired UFS power management level during runtime PM */ 978 enum ufs_pm_level rpm_lvl; 979 /* Desired UFS power management level during system PM */ 980 enum ufs_pm_level spm_lvl; 981 int pm_op_in_progress; 982 983 /* Auto-Hibernate Idle Timer register value */ 984 u32 ahit; 985 986 struct ufshcd_lrb *lrb; 987 988 unsigned long outstanding_tasks; 989 spinlock_t outstanding_lock; 990 unsigned long outstanding_reqs; 991 992 u32 capabilities; 993 int nutrs; 994 int nortt; 995 u32 mcq_capabilities; 996 int nutmrs; 997 u32 reserved_slot; 998 u32 ufs_version; 999 const struct ufs_hba_variant_ops *vops; 1000 struct ufs_hba_variant_params *vps; 1001 void *priv; 1002 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE 1003 size_t sg_entry_size; 1004 #endif 1005 unsigned int irq; 1006 bool is_irq_enabled; 1007 enum ufs_ref_clk_freq dev_ref_clk_freq; 1008 1009 unsigned int quirks; /* Deviations from standard UFSHCI spec. */ 1010 1011 /* Device deviations from standard UFS device spec. */ 1012 unsigned int dev_quirks; 1013 1014 struct blk_mq_tag_set tmf_tag_set; 1015 struct request_queue *tmf_queue; 1016 struct request **tmf_rqs; 1017 1018 struct uic_command *active_uic_cmd; 1019 struct mutex uic_cmd_mutex; 1020 struct completion *uic_async_done; 1021 1022 enum ufshcd_state ufshcd_state; 1023 u32 eh_flags; 1024 u32 intr_mask; 1025 u16 ee_ctrl_mask; 1026 u16 ee_drv_mask; 1027 u16 ee_usr_mask; 1028 struct mutex ee_ctrl_mutex; 1029 bool is_powered; 1030 bool shutting_down; 1031 struct semaphore host_sem; 1032 1033 /* Work Queues */ 1034 struct workqueue_struct *eh_wq; 1035 struct work_struct eh_work; 1036 struct work_struct eeh_work; 1037 1038 /* HBA Errors */ 1039 u32 errors; 1040 u32 uic_error; 1041 u32 saved_err; 1042 u32 saved_uic_err; 1043 struct ufs_stats ufs_stats; 1044 bool force_reset; 1045 bool force_pmc; 1046 bool silence_err_logs; 1047 1048 /* Device management request data */ 1049 struct ufs_dev_cmd dev_cmd; 1050 ktime_t last_dme_cmd_tstamp; 1051 int nop_out_timeout; 1052 1053 /* Keeps information of the UFS device connected to this host */ 1054 struct ufs_dev_info dev_info; 1055 bool auto_bkops_enabled; 1056 struct ufs_vreg_info vreg_info; 1057 struct list_head clk_list_head; 1058 bool use_pm_opp; 1059 1060 /* Number of requests aborts */ 1061 int req_abort_count; 1062 1063 /* Number of lanes available (1 or 2) for Rx/Tx */ 1064 u32 lanes_per_direction; 1065 struct ufs_pa_layer_attr pwr_info; 1066 struct ufs_pwr_mode_info max_pwr_info; 1067 1068 struct ufs_clk_gating clk_gating; 1069 /* Control to enable/disable host capabilities */ 1070 u32 caps; 1071 1072 struct devfreq *devfreq; 1073 struct ufs_clk_scaling clk_scaling; 1074 bool system_suspending; 1075 bool is_sys_suspended; 1076 1077 enum bkops_status urgent_bkops_lvl; 1078 bool is_urgent_bkops_lvl_checked; 1079 1080 struct mutex wb_mutex; 1081 struct rw_semaphore clk_scaling_lock; 1082 1083 struct device bsg_dev; 1084 struct request_queue *bsg_queue; 1085 struct delayed_work rpm_dev_flush_recheck_work; 1086 1087 struct ufs_hba_monitor monitor; 1088 1089 #ifdef CONFIG_SCSI_UFS_CRYPTO 1090 union ufs_crypto_capabilities crypto_capabilities; 1091 union ufs_crypto_cap_entry *crypto_cap_array; 1092 u32 crypto_cfg_register; 1093 struct blk_crypto_profile crypto_profile; 1094 #endif 1095 #ifdef CONFIG_DEBUG_FS 1096 struct dentry *debugfs_root; 1097 struct delayed_work debugfs_ee_work; 1098 u32 debugfs_ee_rate_limit_ms; 1099 #endif 1100 #ifdef CONFIG_SCSI_UFS_FAULT_INJECTION 1101 struct fault_attr trigger_eh_attr; 1102 struct fault_attr timeout_attr; 1103 #endif 1104 u32 luns_avail; 1105 unsigned int nr_hw_queues; 1106 unsigned int nr_queues[HCTX_MAX_TYPES]; 1107 bool complete_put; 1108 bool scsi_host_added; 1109 bool mcq_sup; 1110 bool lsdb_sup; 1111 bool mcq_enabled; 1112 bool mcq_esi_enabled; 1113 void __iomem *mcq_base; 1114 struct ufs_hw_queue *uhq; 1115 struct ufs_hw_queue *dev_cmd_queue; 1116 struct ufshcd_mcq_opr_info_t mcq_opr[OPR_MAX]; 1117 1118 struct delayed_work ufs_rtc_update_work; 1119 struct pm_qos_request pm_qos_req; 1120 bool pm_qos_enabled; 1121 /* synchronizes PM QoS request and status updates */ 1122 struct mutex pm_qos_mutex; 1123 1124 int critical_health_count; 1125 atomic_t dev_lvl_exception_count; 1126 u64 dev_lvl_exception_id; 1127 }; 1128 1129 /** 1130 * struct ufs_hw_queue - per hardware queue structure 1131 * @mcq_sq_head: base address of submission queue head pointer 1132 * @mcq_sq_tail: base address of submission queue tail pointer 1133 * @mcq_cq_head: base address of completion queue head pointer 1134 * @mcq_cq_tail: base address of completion queue tail pointer 1135 * @sqe_base_addr: submission queue entry base address 1136 * @sqe_dma_addr: submission queue dma address 1137 * @cqe_base_addr: completion queue base address 1138 * @cqe_dma_addr: completion queue dma address 1139 * @max_entries: max number of slots in this hardware queue 1140 * @id: hardware queue ID 1141 * @sq_tp_slot: current slot to which SQ tail pointer is pointing 1142 * @sq_lock: serialize submission queue access 1143 * @cq_tail_slot: current slot to which CQ tail pointer is pointing 1144 * @cq_head_slot: current slot to which CQ head pointer is pointing 1145 * @cq_lock: Synchronize between multiple polling instances 1146 * @sq_mutex: prevent submission queue concurrent access 1147 */ 1148 struct ufs_hw_queue { 1149 void __iomem *mcq_sq_head; 1150 void __iomem *mcq_sq_tail; 1151 void __iomem *mcq_cq_head; 1152 void __iomem *mcq_cq_tail; 1153 1154 struct utp_transfer_req_desc *sqe_base_addr; 1155 dma_addr_t sqe_dma_addr; 1156 struct cq_entry *cqe_base_addr; 1157 dma_addr_t cqe_dma_addr; 1158 u32 max_entries; 1159 u32 id; 1160 u32 sq_tail_slot; 1161 spinlock_t sq_lock; 1162 u32 cq_tail_slot; 1163 u32 cq_head_slot; 1164 spinlock_t cq_lock; 1165 /* prevent concurrent access to submission queue */ 1166 struct mutex sq_mutex; 1167 }; 1168 1169 #define MCQ_QCFG_SIZE 0x40 1170 1171 static inline unsigned int ufshcd_mcq_opr_offset(struct ufs_hba *hba, 1172 enum ufshcd_mcq_opr opr, int idx) 1173 { 1174 return hba->mcq_opr[opr].offset + hba->mcq_opr[opr].stride * idx; 1175 } 1176 1177 static inline unsigned int ufshcd_mcq_cfg_offset(unsigned int reg, int idx) 1178 { 1179 return reg + MCQ_QCFG_SIZE * idx; 1180 } 1181 1182 #ifdef CONFIG_SCSI_UFS_VARIABLE_SG_ENTRY_SIZE 1183 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba) 1184 { 1185 return hba->sg_entry_size; 1186 } 1187 1188 static inline void ufshcd_set_sg_entry_size(struct ufs_hba *hba, size_t sg_entry_size) 1189 { 1190 WARN_ON_ONCE(sg_entry_size < sizeof(struct ufshcd_sg_entry)); 1191 hba->sg_entry_size = sg_entry_size; 1192 } 1193 #else 1194 static inline size_t ufshcd_sg_entry_size(const struct ufs_hba *hba) 1195 { 1196 return sizeof(struct ufshcd_sg_entry); 1197 } 1198 1199 #define ufshcd_set_sg_entry_size(hba, sg_entry_size) \ 1200 ({ (void)(hba); BUILD_BUG_ON(sg_entry_size != sizeof(struct ufshcd_sg_entry)); }) 1201 #endif 1202 1203 #ifdef CONFIG_SCSI_UFS_CRYPTO 1204 static inline struct ufs_hba * 1205 ufs_hba_from_crypto_profile(struct blk_crypto_profile *profile) 1206 { 1207 return container_of(profile, struct ufs_hba, crypto_profile); 1208 } 1209 #endif 1210 1211 static inline size_t ufshcd_get_ucd_size(const struct ufs_hba *hba) 1212 { 1213 return sizeof(struct utp_transfer_cmd_desc) + SG_ALL * ufshcd_sg_entry_size(hba); 1214 } 1215 1216 /* Returns true if clocks can be gated. Otherwise false */ 1217 static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba) 1218 { 1219 return hba->caps & UFSHCD_CAP_CLK_GATING; 1220 } 1221 static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba) 1222 { 1223 return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; 1224 } 1225 static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba) 1226 { 1227 return hba->caps & UFSHCD_CAP_CLK_SCALING; 1228 } 1229 static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba) 1230 { 1231 return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND; 1232 } 1233 static inline bool ufshcd_is_rpm_autosuspend_allowed(struct ufs_hba *hba) 1234 { 1235 return hba->caps & UFSHCD_CAP_RPM_AUTOSUSPEND; 1236 } 1237 1238 static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba) 1239 { 1240 return (hba->caps & UFSHCD_CAP_INTR_AGGR) && 1241 !(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR); 1242 } 1243 1244 static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba) 1245 { 1246 return !!(ufshcd_is_link_hibern8(hba) && 1247 (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE)); 1248 } 1249 1250 static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba) 1251 { 1252 return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) && 1253 !(hba->quirks & UFSHCD_QUIRK_BROKEN_AUTO_HIBERN8); 1254 } 1255 1256 static inline bool ufshcd_is_auto_hibern8_enabled(struct ufs_hba *hba) 1257 { 1258 return FIELD_GET(UFSHCI_AHIBERN8_TIMER_MASK, hba->ahit); 1259 } 1260 1261 static inline bool ufshcd_is_wb_allowed(struct ufs_hba *hba) 1262 { 1263 return hba->caps & UFSHCD_CAP_WB_EN; 1264 } 1265 1266 static inline bool ufshcd_enable_wb_if_scaling_up(struct ufs_hba *hba) 1267 { 1268 return hba->caps & UFSHCD_CAP_WB_WITH_CLK_SCALING; 1269 } 1270 1271 #define ufsmcq_writel(hba, val, reg) \ 1272 writel((val), (hba)->mcq_base + (reg)) 1273 #define ufsmcq_readl(hba, reg) \ 1274 readl((hba)->mcq_base + (reg)) 1275 1276 #define ufsmcq_writelx(hba, val, reg) \ 1277 writel_relaxed((val), (hba)->mcq_base + (reg)) 1278 #define ufsmcq_readlx(hba, reg) \ 1279 readl_relaxed((hba)->mcq_base + (reg)) 1280 1281 #define ufshcd_writel(hba, val, reg) \ 1282 writel((val), (hba)->mmio_base + (reg)) 1283 #define ufshcd_readl(hba, reg) \ 1284 readl((hba)->mmio_base + (reg)) 1285 1286 /** 1287 * ufshcd_rmwl - perform read/modify/write for a controller register 1288 * @hba: per adapter instance 1289 * @mask: mask to apply on read value 1290 * @val: actual value to write 1291 * @reg: register address 1292 */ 1293 static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg) 1294 { 1295 u32 tmp; 1296 1297 tmp = ufshcd_readl(hba, reg); 1298 tmp &= ~mask; 1299 tmp |= (val & mask); 1300 ufshcd_writel(hba, tmp, reg); 1301 } 1302 1303 void ufshcd_enable_irq(struct ufs_hba *hba); 1304 void ufshcd_disable_irq(struct ufs_hba *hba); 1305 void ufshcd_enable_intr(struct ufs_hba *hba, u32 intrs); 1306 int ufshcd_alloc_host(struct device *, struct ufs_hba **); 1307 int ufshcd_hba_enable(struct ufs_hba *hba); 1308 int ufshcd_init(struct ufs_hba *, void __iomem *, unsigned int); 1309 int ufshcd_link_recovery(struct ufs_hba *hba); 1310 int ufshcd_make_hba_operational(struct ufs_hba *hba); 1311 void ufshcd_remove(struct ufs_hba *); 1312 int ufshcd_uic_hibern8_enter(struct ufs_hba *hba); 1313 int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); 1314 void ufshcd_delay_us(unsigned long us, unsigned long tolerance); 1315 void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk); 1316 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val); 1317 void ufshcd_hba_stop(struct ufs_hba *hba); 1318 void ufshcd_schedule_eh_work(struct ufs_hba *hba); 1319 void ufshcd_mcq_config_mac(struct ufs_hba *hba, u32 max_active_cmds); 1320 unsigned int ufshcd_mcq_queue_cfg_addr(struct ufs_hba *hba); 1321 u32 ufshcd_mcq_read_cqis(struct ufs_hba *hba, int i); 1322 void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i); 1323 unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba, 1324 struct ufs_hw_queue *hwq); 1325 void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba); 1326 void ufshcd_mcq_enable(struct ufs_hba *hba); 1327 void ufshcd_mcq_enable_esi(struct ufs_hba *hba); 1328 void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg); 1329 1330 int ufshcd_opp_config_clks(struct device *dev, struct opp_table *opp_table, 1331 struct dev_pm_opp *opp, void *data, 1332 bool scaling_down); 1333 /** 1334 * ufshcd_set_variant - set variant specific data to the hba 1335 * @hba: per adapter instance 1336 * @variant: pointer to variant specific data 1337 */ 1338 static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant) 1339 { 1340 BUG_ON(!hba); 1341 hba->priv = variant; 1342 } 1343 1344 /** 1345 * ufshcd_get_variant - get variant specific data from the hba 1346 * @hba: per adapter instance 1347 */ 1348 static inline void *ufshcd_get_variant(struct ufs_hba *hba) 1349 { 1350 BUG_ON(!hba); 1351 return hba->priv; 1352 } 1353 1354 #ifdef CONFIG_PM 1355 extern int ufshcd_runtime_suspend(struct device *dev); 1356 extern int ufshcd_runtime_resume(struct device *dev); 1357 #endif 1358 #ifdef CONFIG_PM_SLEEP 1359 extern int ufshcd_system_suspend(struct device *dev); 1360 extern int ufshcd_system_resume(struct device *dev); 1361 extern int ufshcd_system_freeze(struct device *dev); 1362 extern int ufshcd_system_thaw(struct device *dev); 1363 extern int ufshcd_system_restore(struct device *dev); 1364 #endif 1365 1366 extern int ufshcd_dme_reset(struct ufs_hba *hba); 1367 extern int ufshcd_dme_enable(struct ufs_hba *hba); 1368 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba, 1369 int agreed_gear, 1370 int adapt_val); 1371 extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel, 1372 u8 attr_set, u32 mib_val, u8 peer); 1373 extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel, 1374 u32 *mib_val, u8 peer); 1375 extern int ufshcd_config_pwr_mode(struct ufs_hba *hba, 1376 struct ufs_pa_layer_attr *desired_pwr_mode); 1377 extern int ufshcd_uic_change_pwr_mode(struct ufs_hba *hba, u8 mode); 1378 1379 /* UIC command interfaces for DME primitives */ 1380 #define DME_LOCAL 0 1381 #define DME_PEER 1 1382 #define ATTR_SET_NOR 0 /* NORMAL */ 1383 #define ATTR_SET_ST 1 /* STATIC */ 1384 1385 static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel, 1386 u32 mib_val) 1387 { 1388 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR, 1389 mib_val, DME_LOCAL); 1390 } 1391 1392 static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel, 1393 u32 mib_val) 1394 { 1395 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST, 1396 mib_val, DME_LOCAL); 1397 } 1398 1399 static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel, 1400 u32 mib_val) 1401 { 1402 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR, 1403 mib_val, DME_PEER); 1404 } 1405 1406 static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel, 1407 u32 mib_val) 1408 { 1409 return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST, 1410 mib_val, DME_PEER); 1411 } 1412 1413 static inline int ufshcd_dme_get(struct ufs_hba *hba, 1414 u32 attr_sel, u32 *mib_val) 1415 { 1416 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL); 1417 } 1418 1419 static inline int ufshcd_dme_peer_get(struct ufs_hba *hba, 1420 u32 attr_sel, u32 *mib_val) 1421 { 1422 return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER); 1423 } 1424 1425 static inline bool ufshcd_is_hs_mode(const struct ufs_pa_layer_attr *pwr_info) 1426 { 1427 return (pwr_info->pwr_rx == FAST_MODE || 1428 pwr_info->pwr_rx == FASTAUTO_MODE) && 1429 (pwr_info->pwr_tx == FAST_MODE || 1430 pwr_info->pwr_tx == FASTAUTO_MODE); 1431 } 1432 1433 static inline int ufshcd_disable_host_tx_lcc(struct ufs_hba *hba) 1434 { 1435 return ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0); 1436 } 1437 1438 void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit); 1439 void ufshcd_fixup_dev_quirks(struct ufs_hba *hba, 1440 const struct ufs_dev_quirk *fixups); 1441 #define SD_ASCII_STD true 1442 #define SD_RAW false 1443 int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index, 1444 u8 **buf, bool ascii); 1445 1446 void ufshcd_hold(struct ufs_hba *hba); 1447 void ufshcd_release(struct ufs_hba *hba); 1448 1449 void ufshcd_clkgate_delay_set(struct device *dev, unsigned long value); 1450 1451 int ufshcd_get_vreg(struct device *dev, struct ufs_vreg *vreg); 1452 1453 int ufshcd_send_uic_cmd(struct ufs_hba *hba, struct uic_command *uic_cmd); 1454 1455 int ufshcd_advanced_rpmb_req_handler(struct ufs_hba *hba, struct utp_upiu_req *req_upiu, 1456 struct utp_upiu_req *rsp_upiu, struct ufs_ehs *ehs_req, 1457 struct ufs_ehs *ehs_rsp, int sg_cnt, 1458 struct scatterlist *sg_list, enum dma_data_direction dir); 1459 int ufshcd_wb_toggle(struct ufs_hba *hba, bool enable); 1460 int ufshcd_wb_toggle_buf_flush(struct ufs_hba *hba, bool enable); 1461 int ufshcd_wb_set_resize_en(struct ufs_hba *hba, enum wb_resize_en en_mode); 1462 int ufshcd_suspend_prepare(struct device *dev); 1463 int __ufshcd_suspend_prepare(struct device *dev, bool rpm_ok_for_spm); 1464 void ufshcd_resume_complete(struct device *dev); 1465 bool ufshcd_is_hba_active(struct ufs_hba *hba); 1466 void ufshcd_pm_qos_init(struct ufs_hba *hba); 1467 void ufshcd_pm_qos_exit(struct ufs_hba *hba); 1468 int ufshcd_dme_rmw(struct ufs_hba *hba, u32 mask, u32 val, u32 attr); 1469 1470 /* Wrapper functions for safely calling variant operations */ 1471 static inline int ufshcd_vops_init(struct ufs_hba *hba) 1472 { 1473 if (hba->vops && hba->vops->init) 1474 return hba->vops->init(hba); 1475 1476 return 0; 1477 } 1478 1479 static inline int ufshcd_vops_phy_initialization(struct ufs_hba *hba) 1480 { 1481 if (hba->vops && hba->vops->phy_initialization) 1482 return hba->vops->phy_initialization(hba); 1483 1484 return 0; 1485 } 1486 1487 extern const struct ufs_pm_lvl_states ufs_pm_lvl_states[]; 1488 1489 int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len, 1490 const char *prefix); 1491 1492 int __ufshcd_write_ee_control(struct ufs_hba *hba, u32 ee_ctrl_mask); 1493 int ufshcd_write_ee_control(struct ufs_hba *hba); 1494 int ufshcd_update_ee_control(struct ufs_hba *hba, u16 *mask, 1495 const u16 *other_mask, u16 set, u16 clr); 1496 void ufshcd_force_error_recovery(struct ufs_hba *hba); 1497 1498 #endif /* End of Header */ 1499