Lines Matching +full:cpu +full:- +full:ufs
1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (C) 2011-2013 Samsung India Software Operations
5 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
17 #include <linux/blk-pm.h>
31 #include "ufshcd-priv.h"
32 #include <ufs/ufs_quirks.h>
33 #include <ufs/unipro.h>
34 #include "ufs-sysfs.h"
35 #include "ufs-debugfs.h"
36 #include "ufs-fault-injection.h"
38 #include "ufshcd-crypto.h"
81 /* maximum number of link-startup retries */
119 return hba->mcq_sup && use_mcq_mode;
123 MODULE_PARM_DESC(use_mcq_mode, "Control MCQ mode for controllers starting from UFSHCI 4.0. 1 - enable MCQ, 0 - disable MCQ. MCQ is enabled by default");
140 "UFS UIC command timeout in milliseconds. Defaults to 500ms. Supported values range from 500ms to 5 seconds inclusively");
157 "UFS Device command timeout in milliseconds. Defaults to 1.5s. Supported values range from 1ms to 30 seconds inclusively");
183 return -EINVAL;
187 return -ENOMEM;
234 ((h)->eh_flags |= UFSHCD_EH_IN_PROGRESS)
236 ((h)->eh_flags & UFSHCD_EH_IN_PROGRESS)
238 ((h)->eh_flags &= ~UFSHCD_EH_IN_PROGRESS)
284 return hba->outstanding_tasks || hba->active_uic_cmd ||
285 hba->uic_async_done;
290 return scsi_host_busy(hba->host) || ufshcd_has_pending_tasks(hba);
294 /* UFS cards deviations table */
351 if (!hba->is_irq_enabled) {
352 enable_irq(hba->irq);
353 hba->is_irq_enabled = true;
360 if (hba->is_irq_enabled) {
361 disable_irq(hba->irq);
362 hba->is_irq_enabled = false;
383 struct utp_upiu_req *rq = hba->lrb[tag].ucd_req_ptr;
390 header = &rq->header;
392 header = &hba->lrb[tag].ucd_rsp_ptr->header;
394 trace_ufshcd_upiu(hba, str_t, header, &rq->sc.cdb,
405 trace_ufshcd_upiu(hba, str_t, &rq_rsp->header,
406 &rq_rsp->qr, UFS_TSF_OSF);
412 struct utp_task_req_desc *descp = &hba->utmrdl_base_addr[tag];
419 &descp->upiu_req.req_header,
420 &descp->upiu_req.input_param1,
424 &descp->upiu_rsp.rsp_header,
425 &descp->upiu_rsp.output_param1,
439 cmd = ucmd->command;
457 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
458 struct scsi_cmnd *cmd = lrbp->cmd;
460 int transfer_len = -1;
470 opcode = cmd->cmnd[0];
477 be32_to_cpu(lrbp->ucd_req_ptr->sc.exp_data_transfer_len);
480 group_id = lrbp->cmd->cmnd[6];
491 if (hba->mcq_enabled) {
494 hwq_id = hwq->id;
498 trace_ufshcd_command(cmd->device, hba, str_t, tag, doorbell, hwq_id,
505 struct list_head *head = &hba->clk_list_head;
511 if (!IS_ERR_OR_NULL(clki->clk) && clki->min_freq &&
512 clki->max_freq)
513 dev_err(hba->dev, "clk: %s, rate: %u\n",
514 clki->name, clki->curr_freq);
528 e = &hba->ufs_stats.event[id];
531 int p = (i + e->pos) % UFS_EVENT_HIST_LENGTH;
533 if (e->tstamp[p] == 0)
535 dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, p,
536 e->val[p], div_u64(e->tstamp[p], 1000));
541 dev_err(hba->dev, "No record of %s\n", err_name);
543 dev_err(hba->dev, "%s: total cnt=%llu\n", err_name, e->cnt);
579 lrbp = &hba->lrb[tag];
581 dev_err(hba->dev, "UPIU[%d] - issue time %lld us\n",
582 tag, div_u64(lrbp->issue_time_stamp_local_clock, 1000));
583 dev_err(hba->dev, "UPIU[%d] - complete time %lld us\n",
584 tag, div_u64(lrbp->compl_time_stamp_local_clock, 1000));
585 dev_err(hba->dev,
586 "UPIU[%d] - Transfer Request Descriptor phys@0x%llx\n",
587 tag, (u64)lrbp->utrd_dma_addr);
589 ufshcd_hex_dump("UPIU TRD: ", lrbp->utr_descriptor_ptr,
591 dev_err(hba->dev, "UPIU[%d] - Request UPIU phys@0x%llx\n", tag,
592 (u64)lrbp->ucd_req_dma_addr);
593 ufshcd_hex_dump("UPIU REQ: ", lrbp->ucd_req_ptr,
595 dev_err(hba->dev, "UPIU[%d] - Response UPIU phys@0x%llx\n", tag,
596 (u64)lrbp->ucd_rsp_dma_addr);
597 ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
601 lrbp->utr_descriptor_ptr->prd_table_length);
602 if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
605 dev_err(hba->dev,
606 "UPIU[%d] - PRDT - %d entries phys@0x%llx\n",
608 (u64)lrbp->ucd_prdt_dma_addr);
611 ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
617 struct scsi_device *sdev = req->q->queuedata;
618 struct Scsi_Host *shost = sdev->host;
621 ufshcd_print_tr(hba, req->tag, *(bool *)priv);
627 * ufshcd_print_trs_all - print trs for all started requests.
628 * @hba: per-adapter instance.
633 blk_mq_tagset_busy_iter(&hba->host->tag_set, ufshcd_print_tr_iter, &pr_prdt);
640 for_each_set_bit(tag, &bitmap, hba->nutmrs) {
641 struct utp_task_req_desc *tmrdp = &hba->utmrdl_base_addr[tag];
643 dev_err(hba->dev, "TM[%d] - Task Management Header\n", tag);
650 const struct scsi_device *sdev_ufs = hba->ufs_device_wlun;
652 dev_err(hba->dev, "UFS Host state=%d\n", hba->ufshcd_state);
653 dev_err(hba->dev, "%d outstanding reqs, tasks=0x%lx\n",
654 scsi_host_busy(hba->host), hba->outstanding_tasks);
655 dev_err(hba->dev, "saved_err=0x%x, saved_uic_err=0x%x\n",
656 hba->saved_err, hba->saved_uic_err);
657 dev_err(hba->dev, "Device power mode=%d, UIC link state=%d\n",
658 hba->curr_dev_pwr_mode, hba->uic_link_state);
659 dev_err(hba->dev, "PM in progress=%d, sys. suspended=%d\n",
660 hba->pm_op_in_progress, hba->is_sys_suspended);
661 dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n",
662 hba->auto_bkops_enabled, hba->host->host_self_blocked);
663 dev_err(hba->dev, "Clk gate=%d\n", hba->clk_gating.state);
664 dev_err(hba->dev,
666 div_u64(hba->ufs_stats.last_hibern8_exit_tstamp, 1000),
667 hba->ufs_stats.hibern8_exit_cnt);
668 dev_err(hba->dev, "error handling flags=0x%x, req. abort count=%d\n",
669 hba->eh_flags, hba->req_abort_count);
670 dev_err(hba->dev, "hba->ufs_version=0x%x, Host capabilities=0x%x, caps=0x%x\n",
671 hba->ufs_version, hba->capabilities, hba->caps);
672 dev_err(hba->dev, "quirks=0x%x, dev. quirks=0x%x\n", hba->quirks,
673 hba->dev_quirks);
675 dev_err(hba->dev, "UFS dev info: %.8s %.16s rev %.4s\n",
676 sdev_ufs->vendor, sdev_ufs->model, sdev_ufs->rev);
682 * ufshcd_print_pwr_info - print power params as saved in hba
684 * @hba: per-adapter instance
700 * never-ending cycles of messages written back to storage by user space
703 dev_dbg(hba->dev, "%s:[RX, TX]: gear=[%d, %d], lane[%d, %d], pwr[%s, %s], rate = %d\n",
705 hba->pwr_info.gear_rx, hba->pwr_info.gear_tx,
706 hba->pwr_info.lane_rx, hba->pwr_info.lane_tx,
707 names[hba->pwr_info.pwr_rx],
708 names[hba->pwr_info.pwr_tx],
709 hba->pwr_info.hs_rate);
721 hba->dev_info.wb_enabled = false;
722 hba->dev_info.wb_buf_flush_enabled = false;
724 if (hba->dev_info.rtc_type == UFS_RTC_RELATIVE)
725 hba->dev_info.rtc_time_baseline = 0;
727 if (err != -EOPNOTSUPP)
744 * ufshcd_wait_for_register - wait for register value to change
745 * @hba: per-adapter interface
752 * Return: -ETIMEDOUT on error, zero on success.
767 * ufshcd_get_intr_mask - Get the interrupt bit mask
774 if (hba->ufs_version <= ufshci_version(2, 0))
781 * ufshcd_get_ufs_version - Get the UFS version supported by the HBA
790 if (hba->quirks & UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION)
798 * function, we convert it to the same scheme as ufs 2.0+.
807 * ufshcd_is_device_present - Check if any device connected to
819 * ufshcd_get_tr_ocs - Get the UTRD Overall Command Status
831 return le32_to_cpu(cqe->status) & MASK_OCS;
833 return lrbp->utr_descriptor_ptr->header.ocs & MASK_OCS;
837 * ufshcd_utrl_clear() - Clear requests from the controller request list.
843 if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR)
862 * ufshcd_utmrl_clear - Clear a bit in UTMRLCLR register
868 if (hba->quirks & UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR)
875 * ufshcd_get_lists_status - Check UCRDY, UTRLRDY and UTMRLRDY
886 * ufshcd_get_uic_cmd_result - Get the UIC command result
891 * Return: 0 on success; non-zero value on error.
900 * ufshcd_get_dme_attr_val - Get the value of attribute returned by UIC command
905 * Return: 0 on success; non-zero value on error.
913 * ufshcd_get_req_rsp - returns the TR response transaction type
921 return ucd_rsp_ptr->header.transaction_code;
925 * ufshcd_is_exception_event - Check if the device raised an exception event
935 return ucd_rsp_ptr->header.device_information & 1;
939 * ufshcd_reset_intr_aggr - Reset interrupt aggregation values.
951 * ufshcd_config_intr_aggr - Configure interrupt aggregation values.
966 * ufshcd_disable_intr_aggr - Disables interrupt aggregation.
975 * ufshcd_enable_run_stop_reg - Enable run-stop registers,
976 * When run-stop registers are set to 1, it indicates the
989 * ufshcd_hba_start - Start controller initialization sequence
1003 * ufshcd_is_hba_active - Get controller state
1015 * ufshcd_pm_qos_init - initialize PM QoS request
1021 if (hba->pm_qos_enabled)
1024 cpu_latency_qos_add_request(&hba->pm_qos_req, PM_QOS_DEFAULT_VALUE);
1026 if (cpu_latency_qos_request_active(&hba->pm_qos_req))
1027 hba->pm_qos_enabled = true;
1031 * ufshcd_pm_qos_exit - remove request from PM QoS
1036 if (!hba->pm_qos_enabled)
1039 cpu_latency_qos_remove_request(&hba->pm_qos_req);
1040 hba->pm_qos_enabled = false;
1044 * ufshcd_pm_qos_update - update PM QoS request
1050 if (!hba->pm_qos_enabled)
1053 cpu_latency_qos_update_request(&hba->pm_qos_req, on ? 0 : PM_QOS_DEFAULT_VALUE);
1057 * ufshcd_set_clk_freq - set UFS controller clock frequencies
1067 struct list_head *head = &hba->clk_list_head;
1073 if (!IS_ERR_OR_NULL(clki->clk)) {
1074 if (scale_up && clki->max_freq) {
1075 if (clki->curr_freq == clki->max_freq)
1078 ret = clk_set_rate(clki->clk, clki->max_freq);
1080 dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
1081 __func__, clki->name,
1082 clki->max_freq, ret);
1086 "scaled up", clki->name,
1087 clki->curr_freq,
1088 clki->max_freq);
1090 clki->curr_freq = clki->max_freq;
1092 } else if (!scale_up && clki->min_freq) {
1093 if (clki->curr_freq == clki->min_freq)
1096 ret = clk_set_rate(clki->clk, clki->min_freq);
1098 dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
1099 __func__, clki->name,
1100 clki->min_freq, ret);
1104 "scaled down", clki->name,
1105 clki->curr_freq,
1106 clki->min_freq);
1107 clki->curr_freq = clki->min_freq;
1110 dev_dbg(hba->dev, "%s: clk: %s, rate: %lu\n", __func__,
1111 clki->name, clk_get_rate(clki->clk));
1123 struct list_head *head = &hba->clk_list_head;
1130 if (!IS_ERR_OR_NULL(clki->clk)) {
1137 ret = clk_set_rate(clki->clk, freq);
1140 __func__, clki->name, freq, ret);
1146 clki->name, hba->clk_scaling.target_freq, freq);
1159 opp = dev_pm_opp_find_freq_floor_indexed(hba->dev,
1164 ret = dev_pm_opp_set_opp(hba->dev, opp);
1171 * ufshcd_scale_clks - scale up or scale down UFS controller clocks
1188 if (hba->use_pm_opp)
1197 if (hba->use_pm_opp)
1199 hba->devfreq->previous_freq);
1215 * ufshcd_is_devfreq_scaling_required - check if scaling is required or not
1226 struct list_head *head = &hba->clk_list_head;
1231 if (hba->use_pm_opp)
1232 return freq != hba->clk_scaling.target_freq;
1235 if (!IS_ERR_OR_NULL(clki->clk)) {
1236 if (scale_up && clki->max_freq) {
1237 if (clki->curr_freq == clki->max_freq)
1240 } else if (!scale_up && clki->min_freq) {
1241 if (clki->curr_freq == clki->min_freq)
1264 spin_lock_irqsave(hba->host->host_lock, flags);
1265 __shost_for_each_device(sdev, hba->host)
1266 pending += sbitmap_weight(&sdev->budget_map);
1267 spin_unlock_irqrestore(hba->host->host_lock, flags);
1276 * Return: 0 upon success; -EBUSY upon timeout.
1294 if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL) {
1295 ret = -EBUSY;
1322 dev_err(hba->dev,
1325 ret = -EBUSY;
1333 * ufshcd_scale_gear - scale up/down UFS gear
1338 * Return: 0 for success; -EBUSY if scaling can't happen at this time;
1339 * non-zero for any other errors.
1347 new_pwr_info = hba->pwr_info;
1356 memcpy(&new_pwr_info, &hba->clk_scaling.saved_pwr_info,
1359 memcpy(&new_pwr_info, &hba->pwr_info,
1362 if (hba->pwr_info.gear_tx > hba->clk_scaling.min_gear ||
1363 hba->pwr_info.gear_rx > hba->clk_scaling.min_gear) {
1365 memcpy(&hba->clk_scaling.saved_pwr_info,
1366 &hba->pwr_info,
1370 new_pwr_info.gear_tx = hba->clk_scaling.min_gear;
1371 new_pwr_info.gear_rx = hba->clk_scaling.min_gear;
1379 dev_err(hba->dev, "%s: failed err %d, old gear: (tx %d rx %d), new gear: (tx %d rx %d)",
1381 hba->pwr_info.gear_tx, hba->pwr_info.gear_rx,
1391 * Return: 0 upon success; -EBUSY upon timeout.
1400 mutex_lock(&hba->host->scan_mutex);
1401 blk_mq_quiesce_tagset(&hba->host->tag_set);
1402 mutex_lock(&hba->wb_mutex);
1403 down_write(&hba->clk_scaling_lock);
1405 if (!hba->clk_scaling.is_allowed ||
1407 ret = -EBUSY;
1408 up_write(&hba->clk_scaling_lock);
1409 mutex_unlock(&hba->wb_mutex);
1410 blk_mq_unquiesce_tagset(&hba->host->tag_set);
1411 mutex_unlock(&hba->host->scan_mutex);
1424 up_write(&hba->clk_scaling_lock);
1428 ufshcd_wb_toggle(hba, hba->pwr_info.gear_rx >= hba->clk_scaling.wb_gear);
1430 mutex_unlock(&hba->wb_mutex);
1432 blk_mq_unquiesce_tagset(&hba->host->tag_set);
1433 mutex_unlock(&hba->host->scan_mutex);
1438 * ufshcd_devfreq_scale - scale up/down UFS clocks and gear
1443 * Return: 0 for success; -EBUSY if scaling can't happen at this time; non-zero
1449 u32 old_gear = hba->pwr_info.gear_rx;
1477 ufshcd_scale_clks(hba, hba->devfreq->previous_freq,
1493 scoped_guard(spinlock_irqsave, &hba->clk_scaling.lock)
1495 if (hba->clk_scaling.active_reqs ||
1496 hba->clk_scaling.is_suspended)
1499 hba->clk_scaling.is_suspended = true;
1500 hba->clk_scaling.window_start_t = 0;
1503 devfreq_suspend_device(hba->devfreq);
1511 scoped_guard(spinlock_irqsave, &hba->clk_scaling.lock)
1513 if (!hba->clk_scaling.is_suspended)
1515 hba->clk_scaling.is_suspended = false;
1518 devfreq_resume_device(hba->devfreq);
1528 struct list_head *clk_list = &hba->clk_list_head;
1532 return -EINVAL;
1534 if (hba->use_pm_opp) {
1545 clki = list_first_entry(&hba->clk_list_head, struct ufs_clk_info,
1547 *freq = (unsigned long) clk_round_rate(clki->clk, *freq);
1550 scoped_guard(spinlock_irqsave, &hba->clk_scaling.lock)
1556 if (hba->clk_scaling.is_suspended) {
1557 dev_warn(hba->dev, "clock scaling is suspended, skip");
1561 if (!hba->clk_scaling.active_reqs)
1567 /* Decide based on the target or rounded-off frequency and update */
1568 if (hba->use_pm_opp)
1569 scale_up = *freq > hba->clk_scaling.target_freq;
1571 scale_up = *freq == clki->max_freq;
1573 if (!hba->use_pm_opp && !scale_up)
1574 *freq = clki->min_freq;
1586 hba->clk_scaling.target_freq = *freq;
1594 (!scale_up || hba->clk_scaling.suspend_on_no_request))
1595 queue_work(hba->clk_scaling.workq,
1596 &hba->clk_scaling.suspend_work);
1605 struct ufs_clk_scaling *scaling = &hba->clk_scaling;
1609 return -EINVAL;
1613 guard(spinlock_irqsave)(&hba->clk_scaling.lock);
1616 if (!scaling->window_start_t)
1624 if (hba->use_pm_opp) {
1625 stat->current_frequency = hba->clk_scaling.target_freq;
1627 struct list_head *clk_list = &hba->clk_list_head;
1631 stat->current_frequency = clki->curr_freq;
1634 if (scaling->is_busy_started)
1635 scaling->tot_busy_t += ktime_us_delta(curr_t,
1636 scaling->busy_start_t);
1637 stat->total_time = ktime_us_delta(curr_t, scaling->window_start_t);
1638 stat->busy_time = scaling->tot_busy_t;
1640 scaling->window_start_t = curr_t;
1641 scaling->tot_busy_t = 0;
1643 if (scaling->active_reqs) {
1644 scaling->busy_start_t = curr_t;
1645 scaling->is_busy_started = true;
1647 scaling->busy_start_t = 0;
1648 scaling->is_busy_started = false;
1656 struct list_head *clk_list = &hba->clk_list_head;
1665 if (!hba->use_pm_opp) {
1667 dev_pm_opp_add(hba->dev, clki->min_freq, 0);
1668 dev_pm_opp_add(hba->dev, clki->max_freq, 0);
1671 ufshcd_vops_config_scaling_param(hba, &hba->vps->devfreq_profile,
1672 &hba->vps->ondemand_data);
1673 devfreq = devfreq_add_device(hba->dev,
1674 &hba->vps->devfreq_profile,
1676 &hba->vps->ondemand_data);
1679 dev_err(hba->dev, "Unable to register with devfreq %d\n", ret);
1681 if (!hba->use_pm_opp) {
1682 dev_pm_opp_remove(hba->dev, clki->min_freq);
1683 dev_pm_opp_remove(hba->dev, clki->max_freq);
1688 hba->devfreq = devfreq;
1695 struct list_head *clk_list = &hba->clk_list_head;
1697 if (!hba->devfreq)
1700 devfreq_remove_device(hba->devfreq);
1701 hba->devfreq = NULL;
1703 if (!hba->use_pm_opp) {
1707 dev_pm_opp_remove(hba->dev, clki->min_freq);
1708 dev_pm_opp_remove(hba->dev, clki->max_freq);
1716 cancel_work_sync(&hba->clk_scaling.suspend_work);
1717 cancel_work_sync(&hba->clk_scaling.resume_work);
1719 scoped_guard(spinlock_irqsave, &hba->clk_scaling.lock)
1721 if (!hba->clk_scaling.is_suspended) {
1723 hba->clk_scaling.is_suspended = true;
1724 hba->clk_scaling.window_start_t = 0;
1729 devfreq_suspend_device(hba->devfreq);
1736 scoped_guard(spinlock_irqsave, &hba->clk_scaling.lock)
1738 if (hba->clk_scaling.is_suspended) {
1740 hba->clk_scaling.is_suspended = false;
1745 devfreq_resume_device(hba->devfreq);
1753 return sysfs_emit(buf, "%d\n", hba->clk_scaling.is_enabled);
1766 return -EINVAL;
1768 down(&hba->host_sem);
1770 err = -EBUSY;
1775 if (value == hba->clk_scaling.is_enabled)
1781 hba->clk_scaling.is_enabled = value;
1788 clki = list_first_entry(&hba->clk_list_head, struct ufs_clk_info, list);
1789 freq = clki->max_freq;
1798 dev_err(hba->dev, "%s: failed to scale clocks up %d\n",
1801 hba->clk_scaling.target_freq = freq;
1807 up(&hba->host_sem);
1813 hba->clk_scaling.enable_attr.show = ufshcd_clkscale_enable_show;
1814 hba->clk_scaling.enable_attr.store = ufshcd_clkscale_enable_store;
1815 sysfs_attr_init(&hba->clk_scaling.enable_attr.attr);
1816 hba->clk_scaling.enable_attr.attr.name = "clkscale_enable";
1817 hba->clk_scaling.enable_attr.attr.mode = 0644;
1818 if (device_create_file(hba->dev, &hba->clk_scaling.enable_attr))
1819 dev_err(hba->dev, "Failed to create sysfs for clkscale_enable\n");
1824 if (hba->clk_scaling.enable_attr.attr.name)
1825 device_remove_file(hba->dev, &hba->clk_scaling.enable_attr);
1833 if (!hba->clk_scaling.min_gear)
1834 hba->clk_scaling.min_gear = UFS_HS_G1;
1836 if (!hba->clk_scaling.wb_gear)
1838 hba->clk_scaling.wb_gear = UFS_HS_G3;
1840 INIT_WORK(&hba->clk_scaling.suspend_work,
1842 INIT_WORK(&hba->clk_scaling.resume_work,
1845 spin_lock_init(&hba->clk_scaling.lock);
1847 hba->clk_scaling.workq = alloc_ordered_workqueue(
1848 "ufs_clkscaling_%d", WQ_MEM_RECLAIM, hba->host->host_no);
1850 hba->clk_scaling.is_initialized = true;
1855 if (!hba->clk_scaling.is_initialized)
1859 destroy_workqueue(hba->clk_scaling.workq);
1861 hba->clk_scaling.is_initialized = false;
1870 cancel_delayed_work_sync(&hba->clk_gating.gate_work);
1872 scoped_guard(spinlock_irqsave, &hba->clk_gating.lock) {
1873 if (hba->clk_gating.state == CLKS_ON)
1885 hba->clk_gating.is_suspended = true;
1889 dev_err(hba->dev, "%s: hibern8 exit failed %d\n",
1894 hba->clk_gating.is_suspended = false;
1899 * ufshcd_hold - Enable clocks that were gated earlier due to ufshcd_release.
1909 !hba->clk_gating.is_initialized)
1911 spin_lock_irqsave(&hba->clk_gating.lock, flags);
1912 hba->clk_gating.active_reqs++;
1915 switch (hba->clk_gating.state) {
1927 spin_unlock_irqrestore(&hba->clk_gating.lock, flags);
1928 flush_result = flush_work(&hba->clk_gating.ungate_work);
1929 if (hba->clk_gating.is_suspended && !flush_result)
1931 spin_lock_irqsave(&hba->clk_gating.lock, flags);
1936 if (cancel_delayed_work(&hba->clk_gating.gate_work)) {
1937 hba->clk_gating.state = CLKS_ON;
1939 hba->clk_gating.state);
1949 hba->clk_gating.state = REQ_CLKS_ON;
1951 hba->clk_gating.state);
1952 queue_work(hba->clk_gating.clk_gating_workq,
1953 &hba->clk_gating.ungate_work);
1960 spin_unlock_irqrestore(&hba->clk_gating.lock, flags);
1961 flush_work(&hba->clk_gating.ungate_work);
1963 spin_lock_irqsave(&hba->clk_gating.lock, flags);
1966 dev_err(hba->dev, "%s: clk gating is in invalid state %d\n",
1967 __func__, hba->clk_gating.state);
1970 spin_unlock_irqrestore(&hba->clk_gating.lock, flags);
1980 scoped_guard(spinlock_irqsave, &hba->clk_gating.lock) {
1987 if (hba->clk_gating.is_suspended ||
1988 hba->clk_gating.state != REQ_CLKS_OFF) {
1989 hba->clk_gating.state = CLKS_ON;
1991 hba->clk_gating.state);
1995 if (hba->clk_gating.active_reqs)
1999 scoped_guard(spinlock_irqsave, hba->host->host_lock) {
2001 hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL)
2009 hba->clk_gating.state = CLKS_ON;
2010 dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
2013 hba->clk_gating.state);
2034 guard(spinlock_irqsave)(&hba->clk_gating.lock);
2035 if (hba->clk_gating.state == REQ_CLKS_OFF) {
2036 hba->clk_gating.state = CLKS_OFF;
2038 hba->clk_gating.state);
2044 lockdep_assert_held(&hba->clk_gating.lock);
2049 hba->clk_gating.active_reqs--;
2051 if (hba->clk_gating.active_reqs || hba->clk_gating.is_suspended ||
2052 !hba->clk_gating.is_initialized ||
2053 hba->clk_gating.state == CLKS_OFF)
2056 scoped_guard(spinlock_irqsave, hba->host->host_lock) {
2058 hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL)
2062 hba->clk_gating.state = REQ_CLKS_OFF;
2063 trace_ufshcd_clk_gating(hba, hba->clk_gating.state);
2064 queue_delayed_work(hba->clk_gating.clk_gating_workq,
2065 &hba->clk_gating.gate_work,
2066 msecs_to_jiffies(hba->clk_gating.delay_ms));
2071 guard(spinlock_irqsave)(&hba->clk_gating.lock);
2081 return sysfs_emit(buf, "%lu\n", hba->clk_gating.delay_ms);
2088 guard(spinlock_irqsave)(&hba->clk_gating.lock);
2089 hba->clk_gating.delay_ms = value;
2099 return -EINVAL;
2110 return sysfs_emit(buf, "%d\n", hba->clk_gating.is_enabled);
2120 return -EINVAL;
2124 guard(spinlock_irqsave)(&hba->clk_gating.lock);
2126 if (value == hba->clk_gating.is_enabled)
2132 hba->clk_gating.active_reqs++;
2134 hba->clk_gating.is_enabled = value;
2141 hba->clk_gating.delay_attr.show = ufshcd_clkgate_delay_show;
2142 hba->clk_gating.delay_attr.store = ufshcd_clkgate_delay_store;
2143 sysfs_attr_init(&hba->clk_gating.delay_attr.attr);
2144 hba->clk_gating.delay_attr.attr.name = "clkgate_delay_ms";
2145 hba->clk_gating.delay_attr.attr.mode = 0644;
2146 if (device_create_file(hba->dev, &hba->clk_gating.delay_attr))
2147 dev_err(hba->dev, "Failed to create sysfs for clkgate_delay\n");
2149 hba->clk_gating.enable_attr.show = ufshcd_clkgate_enable_show;
2150 hba->clk_gating.enable_attr.store = ufshcd_clkgate_enable_store;
2151 sysfs_attr_init(&hba->clk_gating.enable_attr.attr);
2152 hba->clk_gating.enable_attr.attr.name = "clkgate_enable";
2153 hba->clk_gating.enable_attr.attr.mode = 0644;
2154 if (device_create_file(hba->dev, &hba->clk_gating.enable_attr))
2155 dev_err(hba->dev, "Failed to create sysfs for clkgate_enable\n");
2160 if (hba->clk_gating.delay_attr.attr.name)
2161 device_remove_file(hba->dev, &hba->clk_gating.delay_attr);
2162 if (hba->clk_gating.enable_attr.attr.name)
2163 device_remove_file(hba->dev, &hba->clk_gating.enable_attr);
2171 hba->clk_gating.state = CLKS_ON;
2173 hba->clk_gating.delay_ms = 150;
2174 INIT_DELAYED_WORK(&hba->clk_gating.gate_work, ufshcd_gate_work);
2175 INIT_WORK(&hba->clk_gating.ungate_work, ufshcd_ungate_work);
2177 hba->clk_gating.clk_gating_workq = alloc_ordered_workqueue(
2179 hba->host->host_no);
2183 hba->clk_gating.is_enabled = true;
2184 hba->clk_gating.is_initialized = true;
2189 if (!hba->clk_gating.is_initialized)
2196 hba->clk_gating.is_initialized = false;
2199 destroy_workqueue(hba->clk_gating.clk_gating_workq);
2210 guard(spinlock_irqsave)(&hba->clk_scaling.lock);
2212 if (!hba->clk_scaling.active_reqs++)
2215 if (!hba->clk_scaling.is_enabled || hba->pm_op_in_progress)
2219 queue_work(hba->clk_scaling.workq,
2220 &hba->clk_scaling.resume_work);
2222 if (!hba->clk_scaling.window_start_t) {
2223 hba->clk_scaling.window_start_t = curr_t;
2224 hba->clk_scaling.tot_busy_t = 0;
2225 hba->clk_scaling.is_busy_started = false;
2228 if (!hba->clk_scaling.is_busy_started) {
2229 hba->clk_scaling.busy_start_t = curr_t;
2230 hba->clk_scaling.is_busy_started = true;
2236 struct ufs_clk_scaling *scaling = &hba->clk_scaling;
2241 guard(spinlock_irqsave)(&hba->clk_scaling.lock);
2243 hba->clk_scaling.active_reqs--;
2244 if (!scaling->active_reqs && scaling->is_busy_started) {
2245 scaling->tot_busy_t += ktime_to_us(ktime_sub(ktime_get(),
2246 scaling->busy_start_t));
2247 scaling->busy_start_t = 0;
2248 scaling->is_busy_started = false;
2259 return -EINVAL;
2265 const struct ufs_hba_monitor *m = &hba->monitor;
2267 return (m->enabled && lrbp && lrbp->cmd &&
2268 (!m->chunk_size || m->chunk_size == lrbp->cmd->sdb.length) &&
2269 ktime_before(hba->monitor.enabled_ts, lrbp->issue_time_stamp));
2275 int dir = ufshcd_monitor_opcode2dir(*lrbp->cmd->cmnd);
2278 spin_lock_irqsave(hba->host->host_lock, flags);
2279 if (dir >= 0 && hba->monitor.nr_queued[dir]++ == 0)
2280 hba->monitor.busy_start_ts[dir] = ktime_get();
2281 spin_unlock_irqrestore(hba->host->host_lock, flags);
2286 int dir = ufshcd_monitor_opcode2dir(*lrbp->cmd->cmnd);
2289 spin_lock_irqsave(hba->host->host_lock, flags);
2290 if (dir >= 0 && hba->monitor.nr_queued[dir] > 0) {
2291 const struct request *req = scsi_cmd_to_rq(lrbp->cmd);
2292 struct ufs_hba_monitor *m = &hba->monitor;
2295 now = lrbp->compl_time_stamp;
2296 inc = ktime_sub(now, m->busy_start_ts[dir]);
2297 m->total_busy[dir] = ktime_add(m->total_busy[dir], inc);
2298 m->nr_sec_rw[dir] += blk_rq_sectors(req);
2301 m->nr_req[dir]++;
2302 lat = ktime_sub(now, lrbp->issue_time_stamp);
2303 m->lat_sum[dir] += lat;
2304 if (m->lat_max[dir] < lat || !m->lat_max[dir])
2305 m->lat_max[dir] = lat;
2306 if (m->lat_min[dir] > lat || !m->lat_min[dir])
2307 m->lat_min[dir] = lat;
2309 m->nr_queued[dir]--;
2311 m->busy_start_ts[dir] = now;
2313 spin_unlock_irqrestore(hba->host->host_lock, flags);
2317 * ufshcd_send_command - Send SCSI or device management commands
2326 struct ufshcd_lrb *lrbp = &hba->lrb[task_tag];
2329 lrbp->issue_time_stamp = ktime_get();
2330 lrbp->issue_time_stamp_local_clock = local_clock();
2331 lrbp->compl_time_stamp = ktime_set(0, 0);
2332 lrbp->compl_time_stamp_local_clock = 0;
2334 if (lrbp->cmd)
2339 if (hba->mcq_enabled) {
2341 struct utp_transfer_req_desc *src = lrbp->utr_descriptor_ptr;
2344 spin_lock(&hwq->sq_lock);
2345 dest = hwq->sqe_base_addr + hwq->sq_tail_slot;
2348 spin_unlock(&hwq->sq_lock);
2350 spin_lock_irqsave(&hba->outstanding_lock, flags);
2351 if (hba->vops && hba->vops->setup_xfer_req)
2352 hba->vops->setup_xfer_req(hba, lrbp->task_tag,
2353 !!lrbp->cmd);
2354 __set_bit(lrbp->task_tag, &hba->outstanding_reqs);
2355 ufshcd_writel(hba, 1 << lrbp->task_tag,
2357 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
2362 * ufshcd_copy_sense_data - Copy sense data in case of check condition
2367 u8 *const sense_buffer = lrbp->cmd->sense_buffer;
2371 resp_len = be16_to_cpu(lrbp->ucd_rsp_ptr->header.data_segment_length);
2375 len = be16_to_cpu(lrbp->ucd_rsp_ptr->sr.sense_data_len);
2378 memcpy(sense_buffer, lrbp->ucd_rsp_ptr->sr.sense_data,
2384 * ufshcd_copy_query_response() - Copy the Query Response and the data
2394 struct ufs_query_res *query_res = &hba->dev_cmd.query.response;
2396 memcpy(&query_res->upiu_res, &lrbp->ucd_rsp_ptr->qr, QUERY_OSF_SIZE);
2399 if (hba->dev_cmd.query.descriptor &&
2400 lrbp->ucd_rsp_ptr->qr.opcode == UPIU_QUERY_OPCODE_READ_DESC) {
2401 u8 *descp = (u8 *)lrbp->ucd_rsp_ptr +
2407 resp_len = be16_to_cpu(lrbp->ucd_rsp_ptr->header
2410 hba->dev_cmd.query.request.upiu_req.length);
2412 memcpy(hba->dev_cmd.query.descriptor, descp, resp_len);
2414 dev_warn(hba->dev,
2417 return -EINVAL;
2425 * ufshcd_hba_capabilities - Read controller capabilities
2434 hba->capabilities = ufshcd_readl(hba, REG_CONTROLLER_CAPABILITIES);
2437 hba->nutrs = (hba->capabilities & MASK_TRANSFER_REQUESTS_SLOTS_SDB) + 1;
2438 hba->nutmrs =
2439 ((hba->capabilities & MASK_TASK_MANAGEMENT_REQUEST_SLOTS) >> 16) + 1;
2440 hba->reserved_slot = hba->nutrs - 1;
2442 hba->nortt = FIELD_GET(MASK_NUMBER_OUTSTANDING_RTT, hba->capabilities) + 1;
2447 dev_err(hba->dev, "crypto setup failed\n");
2456 hba->mcq_sup = FIELD_GET(MASK_MCQ_SUPPORT, hba->capabilities);
2461 if (!(hba->quirks & UFSHCD_QUIRK_BROKEN_LSDBS_CAP))
2462 hba->lsdb_sup = !FIELD_GET(MASK_LSDB_SUPPORT, hba->capabilities);
2464 hba->lsdb_sup = true;
2466 hba->mcq_capabilities = ufshcd_readl(hba, REG_MCQCAP);
2472 * ufshcd_ready_for_uic_cmd - Check if controller is ready
2488 * ufshcd_get_upmcrs - Get the power mode change request status
2501 * ufshcd_dispatch_uic_cmd - Dispatch an UIC command to the Unipro layer
2508 lockdep_assert_held(&hba->uic_cmd_mutex);
2510 WARN_ON(hba->active_uic_cmd);
2512 hba->active_uic_cmd = uic_cmd;
2515 ufshcd_writel(hba, uic_cmd->argument1, REG_UIC_COMMAND_ARG_1);
2516 ufshcd_writel(hba, uic_cmd->argument2, REG_UIC_COMMAND_ARG_2);
2517 ufshcd_writel(hba, uic_cmd->argument3, REG_UIC_COMMAND_ARG_3);
2522 ufshcd_writel(hba, uic_cmd->command & COMMAND_OPCODE_MASK,
2527 * ufshcd_wait_for_uic_cmd - Wait for completion of an UIC command
2539 lockdep_assert_held(&hba->uic_cmd_mutex);
2541 if (wait_for_completion_timeout(&uic_cmd->done,
2543 ret = uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT;
2545 ret = -ETIMEDOUT;
2546 dev_err(hba->dev,
2548 uic_cmd->command, uic_cmd->argument3);
2550 if (!uic_cmd->cmd_active) {
2551 dev_err(hba->dev, "%s: UIC cmd has been completed, return the result\n",
2553 ret = uic_cmd->argument2 & MASK_UIC_COMMAND_RESULT;
2557 spin_lock_irqsave(hba->host->host_lock, flags);
2558 hba->active_uic_cmd = NULL;
2559 spin_unlock_irqrestore(hba->host->host_lock, flags);
2565 * __ufshcd_send_uic_cmd - Send UIC commands and retrieve the result
2574 lockdep_assert_held(&hba->uic_cmd_mutex);
2577 dev_err(hba->dev,
2579 return -EIO;
2582 init_completion(&uic_cmd->done);
2584 uic_cmd->cmd_active = 1;
2591 * ufshcd_send_uic_cmd - Send UIC commands and retrieve the result
2601 if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD)
2605 mutex_lock(&hba->uic_cmd_mutex);
2612 mutex_unlock(&hba->uic_cmd_mutex);
2619 * ufshcd_sgl_to_prdt - SG list to PRTD (Physical Region Description Table, 4DW format)
2620 * @hba: per-adapter instance
2634 if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN)
2635 lrbp->utr_descriptor_ptr->prd_table_length =
2638 lrbp->utr_descriptor_ptr->prd_table_length = cpu_to_le16(sg_entries);
2640 prd = lrbp->ucd_prdt_ptr;
2654 prd->size = cpu_to_le32(len - 1);
2655 prd->addr = cpu_to_le64(sg->dma_address);
2656 prd->reserved = 0;
2660 lrbp->utr_descriptor_ptr->prd_table_length = 0;
2665 * ufshcd_map_sg - Map scatter-gather list to prdt
2669 * Return: 0 in case of success, non-zero value in case of failure.
2673 struct scsi_cmnd *cmd = lrbp->cmd;
2685 * ufshcd_enable_intr - enable interrupts
2698 * ufshcd_disable_intr - disable interrupts
2711 * ufshcd_prepare_req_desc_hdr - Fill UTP Transfer request descriptor header according to request
2724 struct utp_transfer_req_desc *req_desc = lrbp->utr_descriptor_ptr;
2725 struct request_desc_header *h = &req_desc->header;
2728 lrbp->command_type = UTP_CMD_TYPE_UFS_STORAGE;
2743 h->command_type = lrbp->command_type;
2744 h->data_direction = data_direction;
2745 h->ehs_length = ehs_length;
2747 if (lrbp->intr_cmd)
2748 h->interrupt = 1;
2758 h->ocs = OCS_INVALID_COMMAND_STATUS;
2760 req_desc->prd_table_length = 0;
2764 * ufshcd_prepare_utp_scsi_cmd_upiu() - fills the utp_transfer_req_desc,
2772 struct scsi_cmnd *cmd = lrbp->cmd;
2773 struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
2776 ucd_req_ptr->header = (struct utp_upiu_header){
2779 .lun = lrbp->lun,
2780 .task_tag = lrbp->task_tag,
2784 WARN_ON_ONCE(ucd_req_ptr->header.task_tag != lrbp->task_tag);
2786 ucd_req_ptr->sc.exp_data_transfer_len = cpu_to_be32(cmd->sdb.length);
2788 cdb_len = min_t(unsigned short, cmd->cmd_len, UFS_CDB_SIZE);
2789 memcpy(ucd_req_ptr->sc.cdb, cmd->cmnd, cdb_len);
2791 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
2795 * ufshcd_prepare_utp_query_req_upiu() - fill the utp_transfer_req_desc for query request
2796 * @hba: UFS hba
2803 struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
2804 struct ufs_query *query = &hba->dev_cmd.query;
2805 u16 len = be16_to_cpu(query->request.upiu_req.length);
2808 ucd_req_ptr->header = (struct utp_upiu_header){
2811 .lun = lrbp->lun,
2812 .task_tag = lrbp->task_tag,
2813 .query_function = query->request.query_func,
2816 query->request.upiu_req.opcode ==
2823 memcpy(&ucd_req_ptr->qr, &query->request.upiu_req,
2827 if (query->request.upiu_req.opcode == UPIU_QUERY_OPCODE_WRITE_DESC)
2828 memcpy(ucd_req_ptr + 1, query->descriptor, len);
2830 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
2835 struct utp_upiu_req *ucd_req_ptr = lrbp->ucd_req_ptr;
2839 ucd_req_ptr->header = (struct utp_upiu_header){
2841 .task_tag = lrbp->task_tag,
2844 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
2848 * ufshcd_compose_devman_upiu - UFS Protocol Information Unit(UPIU)
2863 if (hba->dev_cmd.type == DEV_CMD_TYPE_QUERY)
2865 else if (hba->dev_cmd.type == DEV_CMD_TYPE_NOP)
2868 ret = -EINVAL;
2874 * ufshcd_comp_scsi_upiu - UFS Protocol Information Unit(UPIU)
2881 struct request *rq = scsi_cmd_to_rq(lrbp->cmd);
2885 ufshcd_prepare_req_desc_hdr(hba, lrbp, &upiu_flags, lrbp->cmd->sc_data_direction, 0);
2893 memset(lrbp->ucd_req_ptr, 0, sizeof(*lrbp->ucd_req_ptr));
2895 lrbp->cmd = cmd;
2896 lrbp->task_tag = tag;
2897 lrbp->lun = lun;
2905 lrbp->intr_cmd = !ufshcd_is_intr_aggr_allowed(hba);
2906 lrbp->req_abort_skip = false;
2912 * ufshcd_upiu_wlun_to_scsi_wlun - maps UPIU W-LUN id to SCSI W-LUN ID
2913 * @upiu_wlun_id: UPIU W-LUN id
2915 * Return: SCSI W-LUN id.
2924 return sdev->lun ==
2929 * Associate the UFS controller queue with the default and poll HCTX types.
2938 hba->nr_queues[HCTX_TYPE_DEFAULT] = 1;
2939 hba->nr_queues[HCTX_TYPE_READ] = 0;
2940 hba->nr_queues[HCTX_TYPE_POLL] = 1;
2941 hba->nr_hw_queues = 1;
2944 for (i = 0; i < shost->nr_maps; i++) {
2945 struct blk_mq_queue_map *map = &shost->tag_set.map[i];
2947 map->nr_queues = hba->nr_queues[i];
2948 if (!map->nr_queues)
2950 map->queue_offset = queue_offset;
2952 map->queue_offset = 0;
2955 queue_offset += map->nr_queues;
2961 struct utp_transfer_cmd_desc *cmd_descp = (void *)hba->ucdl_base_addr +
2963 struct utp_transfer_req_desc *utrdlp = hba->utrdl_base_addr;
2964 dma_addr_t cmd_desc_element_addr = hba->ucdl_dma_addr +
2969 lrb->utr_descriptor_ptr = utrdlp + i;
2970 lrb->utrd_dma_addr = hba->utrdl_dma_addr +
2972 lrb->ucd_req_ptr = (struct utp_upiu_req *)cmd_descp->command_upiu;
2973 lrb->ucd_req_dma_addr = cmd_desc_element_addr;
2974 lrb->ucd_rsp_ptr = (struct utp_upiu_rsp *)cmd_descp->response_upiu;
2975 lrb->ucd_rsp_dma_addr = cmd_desc_element_addr + response_offset;
2976 lrb->ucd_prdt_ptr = (struct ufshcd_sg_entry *)cmd_descp->prd_table;
2977 lrb->ucd_prdt_dma_addr = cmd_desc_element_addr + prdt_offset;
2981 * ufshcd_queuecommand - main entry point for SCSI requests
2985 * Return: 0 for success, non-zero in case of failure.
2990 int tag = scsi_cmd_to_rq(cmd)->tag;
2995 switch (hba->ufshcd_state) {
3000 * SCSI error handler can call ->queuecommand() while UFS error
3017 * can we let the scsi cmd pass through, because UFS is in bad
3022 if (hba->pm_op_in_progress) {
3023 hba->force_reset = true;
3038 hba->req_abort_count = 0;
3042 lrbp = &hba->lrb[tag];
3044 ufshcd_setup_scsi_cmd(hba, lrbp, cmd, ufshcd_scsi_to_upiu_lun(cmd->device->lun), tag);
3052 if (hba->mcq_enabled)
3061 spin_lock_irqsave(hba->host->host_lock, flags);
3063 spin_unlock_irqrestore(hba->host->host_lock, flags);
3073 lrbp->intr_cmd = true; /* No interrupt aggregation */
3074 hba->dev_cmd.type = cmd_type;
3107 if (hba->mcq_enabled) {
3114 dev_err(hba->dev, "%s: failed tag=%d. err=%d\n",
3127 * wait for h/w to clear corresponding bit in door-bell.
3135 * ufshcd_dev_cmd_completion() - handles device management command responses
3147 hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
3148 resp = ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr);
3152 if (hba->dev_cmd.type != DEV_CMD_TYPE_NOP) {
3153 err = -EINVAL;
3154 dev_err(hba->dev, "%s: unexpected response %x\n",
3159 u8 response = lrbp->ucd_rsp_ptr->header.response;
3164 err = -EINVAL;
3165 dev_err(hba->dev, "%s: unexpected response in Query RSP: %x\n",
3172 err = -EPERM;
3173 dev_err(hba->dev, "%s: Reject UPIU not fully implemented\n",
3177 if (hba->dev_cmd.type != DEV_CMD_TYPE_RPMB) {
3178 err = -EINVAL;
3179 dev_err(hba->dev, "%s: unexpected response %x\n", __func__, resp);
3183 err = -EINVAL;
3184 dev_err(hba->dev, "%s: Invalid device management cmd response: %x\n",
3201 time_left = wait_for_completion_timeout(&hba->dev_cmd.complete,
3209 err = -ETIMEDOUT;
3210 dev_dbg(hba->dev, "%s: dev_cmd request timedout, tag %d\n",
3211 __func__, lrbp->task_tag);
3214 if (hba->mcq_enabled) {
3216 if (ufshcd_clear_cmd(hba, lrbp->task_tag) == 0)
3217 err = -EAGAIN;
3222 if (ufshcd_clear_cmd(hba, lrbp->task_tag) == 0) {
3224 err = -EAGAIN;
3230 spin_lock_irqsave(&hba->outstanding_lock, flags);
3231 pending = test_bit(lrbp->task_tag,
3232 &hba->outstanding_reqs);
3234 __clear_bit(lrbp->task_tag,
3235 &hba->outstanding_reqs);
3236 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
3247 dev_err(hba->dev, "%s: failed to clear tag %d\n",
3248 __func__, lrbp->task_tag);
3250 spin_lock_irqsave(&hba->outstanding_lock, flags);
3251 pending = test_bit(lrbp->task_tag,
3252 &hba->outstanding_reqs);
3253 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
3272 mutex_lock(&hba->dev_cmd.lock);
3273 down_read(&hba->clk_scaling_lock);
3278 up_read(&hba->clk_scaling_lock);
3279 mutex_unlock(&hba->dev_cmd.lock);
3288 ufshcd_add_query_upiu_trace(hba, UFS_QUERY_SEND, lrbp->ucd_req_ptr);
3289 ufshcd_send_command(hba, tag, hba->dev_cmd_queue);
3293 (struct utp_upiu_req *)lrbp->ucd_rsp_ptr);
3299 * ufshcd_exec_dev_cmd - API for sending device management requests
3300 * @hba: UFS hba
3307 * it is expected you hold the hba->dev_cmd.lock mutex.
3312 const u32 tag = hba->reserved_slot;
3313 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
3316 /* Protects use of hba->reserved_slot. */
3317 lockdep_assert_held(&hba->dev_cmd.lock);
3327 * ufshcd_init_query() - init the query response and request parameters
3328 * @hba: per-adapter instance
3340 *request = &hba->dev_cmd.query.request;
3341 *response = &hba->dev_cmd.query.response;
3344 (*request)->upiu_req.opcode = opcode;
3345 (*request)->upiu_req.idn = idn;
3346 (*request)->upiu_req.index = index;
3347 (*request)->upiu_req.selector = selector;
3359 dev_dbg(hba->dev,
3367 dev_err(hba->dev,
3374 * ufshcd_query_flag() - API function for sending flag query requests
3375 * @hba: per-adapter instance
3381 * Return: 0 for success, non-zero in case of failure.
3402 request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
3405 request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
3408 dev_err(hba->dev, "%s: Invalid argument for read request\n",
3410 err = -EINVAL;
3415 dev_err(hba->dev,
3418 err = -EINVAL;
3425 dev_err(hba->dev,
3432 *flag_res = (be32_to_cpu(response->upiu_res.value) &
3441 * ufshcd_query_attr - API function for sending attribute requests
3442 * @hba: per-adapter instance
3449 * Return: 0 for success, non-zero in case of failure.
3461 dev_err(hba->dev, "%s: attribute value required for opcode 0x%x\n",
3463 return -EINVAL;
3473 request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
3474 request->upiu_req.value = cpu_to_be32(*attr_val);
3477 request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
3480 dev_err(hba->dev, "%s: Expected query attr opcode but got = 0x%.2x\n",
3482 err = -EINVAL;
3489 dev_err(hba->dev, "%s: opcode 0x%.2x for idn %d failed, index %d, err = %d\n",
3494 *attr_val = be32_to_cpu(response->upiu_res.value);
3502 * ufshcd_query_attr_retry() - API function for sending query
3504 * @hba: per-adapter instance
3512 * Return: 0 for success, non-zero in case of failure.
3521 for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
3525 dev_dbg(hba->dev, "%s: failed with error %d, retries %d\n",
3532 dev_err(hba->dev,
3549 dev_err(hba->dev, "%s: descriptor buffer required for opcode 0x%x\n",
3551 return -EINVAL;
3555 dev_err(hba->dev, "%s: descriptor buffer size (%d) is out of range\n",
3557 return -EINVAL;
3564 hba->dev_cmd.query.descriptor = desc_buf;
3565 request->upiu_req.length = cpu_to_be16(*buf_len);
3569 request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
3572 request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
3575 dev_err(hba->dev,
3578 err = -EINVAL;
3585 dev_err(hba->dev, "%s: opcode 0x%.2x for idn %d failed, index %d, err = %d\n",
3590 *buf_len = be16_to_cpu(response->upiu_res.length);
3593 hba->dev_cmd.query.descriptor = NULL;
3599 * ufshcd_query_descriptor_retry - API function for sending descriptor requests
3600 * @hba: per-adapter instance
3611 * Return: 0 for success, non-zero in case of failure.
3622 for (retries = QUERY_REQ_RETRIES; retries > 0; retries--) {
3625 if (!err || err == -EINVAL)
3633 * ufshcd_read_desc_param - read the specified descriptor parameter
3641 * Return: 0 in case of success, non-zero otherwise.
3657 return -EINVAL;
3663 return -ENOMEM;
3674 dev_err(hba->dev, "%s: Failed reading descriptor. desc_id %d, desc_index %d, param_offset %d, ret %d\n",
3683 dev_err(hba->dev, "%s: Invalid offset 0x%x in descriptor IDN 0x%x, length 0x%x\n",
3685 ret = -EINVAL;
3691 dev_err(hba->dev, "%s: invalid desc_id %d in descriptor header\n",
3693 ret = -EINVAL;
3700 ret = -EINVAL;
3703 min_t(u32, param_size, buff_len - param_offset));
3712 * struct uc_string_id - unicode string
3724 /* replace non-printable or non-ASCII characters with spaces */
3731 * ufshcd_read_string_desc - read string descriptor
3741 * * -ENOMEM: on allocation failure
3742 * * -EINVAL: on a wrong parameter
3752 return -EINVAL;
3756 return -ENOMEM;
3761 dev_err(hba->dev, "Reading String Desc failed after %d retries. err = %d\n",
3767 if (uc_str->len <= QUERY_DESC_HDR_SIZE) {
3768 dev_dbg(hba->dev, "String Desc is of zero length\n");
3778 ascii_len = (uc_str->len - QUERY_DESC_HDR_SIZE) / 2 + 1;
3781 ret = -ENOMEM;
3787 * we need to convert to utf-8 so it can be displayed
3789 ret = utf16s_to_utf8s(uc_str->uc,
3790 uc_str->len - QUERY_DESC_HDR_SIZE,
3791 UTF16_BIG_ENDIAN, str, ascii_len - 1);
3793 /* replace non-printable or non-ASCII characters with spaces */
3800 str = kmemdup(uc_str, uc_str->len, GFP_KERNEL);
3802 ret = -ENOMEM;
3805 ret = uc_str->len;
3814 * ufshcd_read_unit_desc_param - read the specified unit descriptor parameter
3821 * Return: 0 in case of success, non-zero otherwise.
3833 if (!ufs_is_valid_unit_desc_lun(&hba->dev_info, lun))
3834 return -EOPNOTSUPP;
3845 if (hba->dev_info.wspecversion >= 0x300) {
3850 dev_err(hba->dev, "Failed reading bRefClkGatingWait. err = %d, use default %uus\n",
3855 dev_err(hba->dev, "Undefined ref clk gating wait time, use default %uus\n",
3859 hba->dev_info.clk_gating_wait_us = gating_wait;
3866 * ufshcd_memory_alloc - allocate memory for host memory space data structures
3876 * Return: 0 for success, non-zero in case of failure.
3883 ucdl_size = ufshcd_get_ucd_size(hba) * hba->nutrs;
3884 hba->ucdl_base_addr = dmam_alloc_coherent(hba->dev,
3886 &hba->ucdl_dma_addr,
3892 if (!hba->ucdl_base_addr ||
3893 WARN_ON(hba->ucdl_dma_addr & (128 - 1))) {
3894 dev_err(hba->dev,
3903 utrdl_size = (sizeof(struct utp_transfer_req_desc) * hba->nutrs);
3904 hba->utrdl_base_addr = dmam_alloc_coherent(hba->dev,
3906 &hba->utrdl_dma_addr,
3908 if (!hba->utrdl_base_addr ||
3909 WARN_ON(hba->utrdl_dma_addr & (SZ_1K - 1))) {
3910 dev_err(hba->dev,
3921 if (hba->utmrdl_base_addr)
3927 utmrdl_size = sizeof(struct utp_task_req_desc) * hba->nutmrs;
3928 hba->utmrdl_base_addr = dmam_alloc_coherent(hba->dev,
3930 &hba->utmrdl_dma_addr,
3932 if (!hba->utmrdl_base_addr ||
3933 WARN_ON(hba->utmrdl_dma_addr & (SZ_1K - 1))) {
3934 dev_err(hba->dev,
3941 hba->lrb = devm_kcalloc(hba->dev,
3942 hba->nutrs, sizeof(struct ufshcd_lrb),
3944 if (!hba->lrb) {
3945 dev_err(hba->dev, "LRB Memory allocation failed\n");
3950 return -ENOMEM;
3954 * ufshcd_host_memory_configure - configure local reference block with
3976 utrdlp = hba->utrdl_base_addr;
3984 cmd_desc_dma_addr = hba->ucdl_dma_addr;
3986 for (i = 0; i < hba->nutrs; i++) {
3994 if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN) {
4010 ufshcd_init_lrb(hba, &hba->lrb[i], i);
4015 * ufshcd_dme_link_startup - Notify Unipro to perform link startup
4023 * Return: 0 on success, non-zero value on failure.
4034 dev_dbg(hba->dev,
4035 "dme-link-startup: error code %d\n", ret);
4039 * ufshcd_dme_reset - UIC command for DME_RESET
4045 * Return: 0 on success, non-zero value on failure.
4056 dev_err(hba->dev,
4057 "dme-reset: error code %d\n", ret);
4080 * ufshcd_dme_enable - UIC command for DME_ENABLE
4085 * Return: 0 on success, non-zero value on failure.
4096 dev_err(hba->dev,
4097 "dme-enable: error code %d\n", ret);
4108 if (!(hba->quirks & UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS))
4115 if (unlikely(!ktime_to_us(hba->last_dme_cmd_tstamp))) {
4121 hba->last_dme_cmd_tstamp));
4125 MIN_DELAY_BEFORE_DME_CMDS_US - delta;
4136 hba->last_dme_cmd_tstamp = ktime_get();
4140 * ufshcd_dme_set_attr - UIC command for DME_SET, DME_PEER_SET
4147 * Return: 0 on success, non-zero value on failure.
4159 "dme-set",
4160 "dme-peer-set"
4170 dev_dbg(hba->dev, "%s: attr-id 0x%x val 0x%x error code %d\n",
4172 } while (ret && peer && --retries);
4175 dev_err(hba->dev, "%s: attr-id 0x%x val 0x%x failed %d retries\n",
4177 UFS_UIC_COMMAND_RETRIES - retries);
4184 * ufshcd_dme_get_attr - UIC command for DME_GET, DME_PEER_GET
4190 * Return: 0 on success, non-zero value on failure.
4200 "dme-get",
4201 "dme-peer-get"
4210 if (peer && (hba->quirks & UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE)) {
4211 orig_pwr_info = hba->pwr_info;
4236 dev_dbg(hba->dev, "%s: attr-id 0x%x error code %d\n",
4238 } while (ret && peer && --retries);
4241 dev_err(hba->dev, "%s: attr-id 0x%x failed %d retries\n",
4243 UFS_UIC_COMMAND_RETRIES - retries);
4248 if (peer && (hba->quirks & UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE)
4257 * ufshcd_uic_pwr_ctrl - executes UIC commands (which affects the link power
4270 * Return: 0 on success, non-zero value on failure.
4280 mutex_lock(&hba->uic_cmd_mutex);
4283 spin_lock_irqsave(hba->host->host_lock, flags);
4285 ret = -ENOLINK;
4288 hba->uic_async_done = &uic_async_done;
4298 spin_unlock_irqrestore(hba->host->host_lock, flags);
4301 dev_err(hba->dev,
4303 cmd->command, cmd->argument3, ret);
4307 if (!wait_for_completion_timeout(hba->uic_async_done,
4309 dev_err(hba->dev,
4311 cmd->command, cmd->argument3);
4313 if (!cmd->cmd_active) {
4314 dev_err(hba->dev, "%s: Power Mode Change operation has been completed, go check UPMCRS\n",
4319 ret = -ETIMEDOUT;
4326 dev_err(hba->dev,
4328 cmd->command, status);
4329 ret = (status != PWR_OK) ? status : -1;
4338 spin_lock_irqsave(hba->host->host_lock, flags);
4339 hba->active_uic_cmd = NULL;
4340 hba->uic_async_done = NULL;
4348 spin_unlock_irqrestore(hba->host->host_lock, flags);
4349 mutex_unlock(&hba->uic_cmd_mutex);
4355 * ufshcd_send_bsg_uic_cmd - Send UIC commands requested via BSG layer and retrieve the result
4365 if (hba->quirks & UFSHCD_QUIRK_BROKEN_UIC_CMD)
4370 if (uic_cmd->argument1 == UIC_ARG_MIB(PA_PWRMODE) &&
4371 uic_cmd->command == UIC_CMD_DME_SET) {
4376 mutex_lock(&hba->uic_cmd_mutex);
4383 mutex_unlock(&hba->uic_cmd_mutex);
4391 * ufshcd_uic_change_pwr_mode - Perform the UIC power mode chage
4396 * Return: 0 on success, non-zero value on failure.
4407 if (hba->quirks & UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP) {
4411 dev_err(hba->dev, "%s: failed to enable PA_RXHSUNTERMCAP ret %d\n",
4431 spin_lock_irqsave(hba->host->host_lock, flags);
4432 hba->ufshcd_state = UFSHCD_STATE_RESET;
4434 spin_unlock_irqrestore(hba->host->host_lock, flags);
4441 spin_lock_irqsave(hba->host->host_lock, flags);
4443 hba->ufshcd_state = UFSHCD_STATE_ERROR;
4445 spin_unlock_irqrestore(hba->host->host_lock, flags);
4448 dev_err(hba->dev, "%s: link recovery failed, err %d",
4470 dev_err(hba->dev, "%s: hibern8 enter failed. ret = %d\n",
4495 dev_err(hba->dev, "%s: hibern8 exit failed. ret = %d\n",
4500 hba->ufs_stats.last_hibern8_exit_tstamp = local_clock();
4501 hba->ufs_stats.hibern8_exit_cnt++;
4513 ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER);
4518 const u32 cur_ahit = READ_ONCE(hba->ahit);
4523 WRITE_ONCE(hba->ahit, ahit);
4524 if (!pm_runtime_suspended(&hba->ufs_device_wlun->sdev_gendev)) {
4535 * ufshcd_init_pwr_info - setting the POR (power on reset)
4537 * @hba: per-adapter instance
4541 hba->pwr_info.gear_rx = UFS_PWM_G1;
4542 hba->pwr_info.gear_tx = UFS_PWM_G1;
4543 hba->pwr_info.lane_rx = UFS_LANE_1;
4544 hba->pwr_info.lane_tx = UFS_LANE_1;
4545 hba->pwr_info.pwr_rx = SLOWAUTO_MODE;
4546 hba->pwr_info.pwr_tx = SLOWAUTO_MODE;
4547 hba->pwr_info.hs_rate = 0;
4551 * ufshcd_get_max_pwr_mode - reads the max power mode negotiated with device
4552 * @hba: per-adapter instance
4558 struct ufs_pa_layer_attr *pwr_info = &hba->max_pwr_info.info;
4560 if (hba->max_pwr_info.is_valid)
4563 if (hba->quirks & UFSHCD_QUIRK_HIBERN_FASTAUTO) {
4564 pwr_info->pwr_tx = FASTAUTO_MODE;
4565 pwr_info->pwr_rx = FASTAUTO_MODE;
4567 pwr_info->pwr_tx = FAST_MODE;
4568 pwr_info->pwr_rx = FAST_MODE;
4570 pwr_info->hs_rate = PA_HS_MODE_B;
4574 &pwr_info->lane_rx);
4576 &pwr_info->lane_tx);
4578 if (!pwr_info->lane_rx || !pwr_info->lane_tx) {
4579 dev_err(hba->dev, "%s: invalid connected lanes value. rx=%d, tx=%d\n",
4581 pwr_info->lane_rx,
4582 pwr_info->lane_tx);
4583 return -EINVAL;
4586 if (pwr_info->lane_rx != pwr_info->lane_tx) {
4587 dev_err(hba->dev, "%s: asymmetric connected lanes. rx=%d, tx=%d\n",
4589 pwr_info->lane_rx,
4590 pwr_info->lane_tx);
4591 return -EINVAL;
4599 ufshcd_dme_get(hba, UIC_ARG_MIB(PA_MAXRXHSGEAR), &pwr_info->gear_rx);
4600 if (!pwr_info->gear_rx) {
4602 &pwr_info->gear_rx);
4603 if (!pwr_info->gear_rx) {
4604 dev_err(hba->dev, "%s: invalid max pwm rx gear read = %d\n",
4605 __func__, pwr_info->gear_rx);
4606 return -EINVAL;
4608 pwr_info->pwr_rx = SLOW_MODE;
4612 &pwr_info->gear_tx);
4613 if (!pwr_info->gear_tx) {
4615 &pwr_info->gear_tx);
4616 if (!pwr_info->gear_tx) {
4617 dev_err(hba->dev, "%s: invalid max pwm tx gear read = %d\n",
4618 __func__, pwr_info->gear_tx);
4619 return -EINVAL;
4621 pwr_info->pwr_tx = SLOW_MODE;
4624 hba->max_pwr_info.is_valid = true;
4634 if (!hba->force_pmc &&
4635 pwr_mode->gear_rx == hba->pwr_info.gear_rx &&
4636 pwr_mode->gear_tx == hba->pwr_info.gear_tx &&
4637 pwr_mode->lane_rx == hba->pwr_info.lane_rx &&
4638 pwr_mode->lane_tx == hba->pwr_info.lane_tx &&
4639 pwr_mode->pwr_rx == hba->pwr_info.pwr_rx &&
4640 pwr_mode->pwr_tx == hba->pwr_info.pwr_tx &&
4641 pwr_mode->hs_rate == hba->pwr_info.hs_rate) {
4642 dev_dbg(hba->dev, "%s: power already configured\n", __func__);
4648 * - PA_RXGEAR, PA_ACTIVERXDATALANES, PA_RXTERMINATION,
4649 * - PA_TXGEAR, PA_ACTIVETXDATALANES, PA_TXTERMINATION,
4650 * - PA_HSSERIES
4652 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXGEAR), pwr_mode->gear_rx);
4654 pwr_mode->lane_rx);
4655 if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
4656 pwr_mode->pwr_rx == FAST_MODE)
4661 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXGEAR), pwr_mode->gear_tx);
4663 pwr_mode->lane_tx);
4664 if (pwr_mode->pwr_tx == FASTAUTO_MODE ||
4665 pwr_mode->pwr_tx == FAST_MODE)
4670 if (pwr_mode->pwr_rx == FASTAUTO_MODE ||
4671 pwr_mode->pwr_tx == FASTAUTO_MODE ||
4672 pwr_mode->pwr_rx == FAST_MODE ||
4673 pwr_mode->pwr_tx == FAST_MODE)
4675 pwr_mode->hs_rate);
4677 if (!(hba->quirks & UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING)) {
4699 ret = ufshcd_uic_change_pwr_mode(hba, pwr_mode->pwr_rx << 4
4700 | pwr_mode->pwr_tx);
4703 dev_err(hba->dev,
4706 memcpy(&hba->pwr_info, pwr_mode,
4714 * ufshcd_config_pwr_mode - configure a new power mode
4715 * @hba: per-adapter instance
4743 * ufshcd_complete_dev_init() - checks device readiness
4744 * @hba: per-adapter instance
4759 dev_err(hba->dev,
4776 dev_err(hba->dev,
4780 dev_err(hba->dev,
4783 err = -EBUSY;
4790 * ufshcd_make_hba_operational - Make UFS controller operational
4793 * To bring UFS host controller to operational state,
4797 * 4. Configure run-stop-registers
4799 * Return: 0 on success, non-zero value on failure.
4811 ufshcd_config_intr_aggr(hba, hba->nutrs - 1, INT_AGGR_DEF_TO);
4816 ufshcd_writel(hba, lower_32_bits(hba->utrdl_dma_addr),
4818 ufshcd_writel(hba, upper_32_bits(hba->utrdl_dma_addr),
4820 ufshcd_writel(hba, lower_32_bits(hba->utmrdl_dma_addr),
4822 ufshcd_writel(hba, upper_32_bits(hba->utmrdl_dma_addr),
4832 dev_err(hba->dev,
4834 err = -EIO;
4842 * ufshcd_hba_stop - Send controller to reset state
4856 dev_err(hba->dev, "%s: Controller disable failed\n", __func__);
4861 * ufshcd_hba_execute_hce - initialize the controller
4868 * Return: 0 on success, non-zero value on failure.
4874 for (retry = 3; retry > 0; retry--) {
4888 * To initialize a UFS host controller HCE bit must be set to 1.
4889 * During initialization the HCE bit value changes from 1->0->1.
4897 ufshcd_delay_us(hba->vps->hba_enable_delay_us, 100);
4904 dev_err(hba->dev, "Enabling the controller failed\n");
4908 return -EIO;
4922 if (hba->quirks & UFSHCI_QUIRK_BROKEN_HCE) {
4930 dev_err(hba->dev, "DME_RESET failed\n");
4936 dev_err(hba->dev, "Enabling DME failed\n");
4971 dev_err(hba->dev, "%s: TX LCC Disable failed, peer = %d, lane = %d, err = %d",
4992 e = &hba->ufs_stats.event[id];
4993 e->val[e->pos] = val;
4994 e->tstamp[e->pos] = local_clock();
4995 e->cnt += 1;
4996 e->pos = (e->pos + 1) % UFS_EVENT_HIST_LENGTH;
5003 * ufshcd_link_startup - Initialize unipro link startup
5006 * Return: 0 for success, non-zero in case of failure.
5015 * If UFS device isn't active then we will have to issue link startup
5027 /* check if device is detected by inter-connect layer */
5032 dev_err(hba->dev, "%s: Device not present\n", __func__);
5033 ret = -ENXIO;
5040 * succeeds. So reset the local Uni-Pro and try again.
5048 } while (ret && retries--);
5064 /* Mark that link is up in PWM-G1, 1-lane, SLOW-AUTO mode */
5068 if (hba->quirks & UFSHCD_QUIRK_BROKEN_LCC) {
5084 dev_err(hba->dev, "link startup failed %d\n", ret);
5093 * ufshcd_verify_dev_init() - Verify device initialization
5094 * @hba: per-adapter instance
5111 for (retries = NOP_OUT_RETRIES; retries > 0; retries--) {
5113 hba->nop_out_timeout);
5115 if (!err || err == -ETIMEDOUT)
5118 dev_dbg(hba->dev, "%s: error %d retrying\n", __func__, err);
5124 dev_err(hba->dev, "%s: NOP OUT failed %d\n", __func__, err);
5129 * ufshcd_setup_links - associate link b/w device wlun and other luns
5131 * @hba: pointer to ufs hba
5141 if (hba->ufs_device_wlun) {
5142 link = device_link_add(&sdev->sdev_gendev,
5143 &hba->ufs_device_wlun->sdev_gendev,
5146 dev_err(&sdev->sdev_gendev, "Failed establishing link - %s\n",
5147 dev_name(&hba->ufs_device_wlun->sdev_gendev));
5150 hba->luns_avail--;
5152 if (hba->luns_avail == 1) {
5161 hba->luns_avail--;
5166 * ufshcd_lu_init - Initialize the relevant parameters of the LU
5167 * @hba: per-adapter instance
5173 u8 lun = ufshcd_scsi_to_upiu_lun(sdev->lun);
5174 u8 lun_qdepth = hba->nutrs;
5184 if (ret == -EOPNOTSUPP)
5193 * In per-LU queueing architecture, bLUQueueDepth will not be 0, then we will
5194 * use the smaller between UFSHCI CAP.NUTRS and UFS LU bLUQueueDepth
5196 lun_qdepth = min_t(int, desc_buf[UNIT_DESC_PARAM_LU_Q_DEPTH], hba->nutrs);
5199 * According to UFS device specification, the write protection mode is only supported by
5202 if (hba->dev_info.f_power_on_wp_en && lun < hba->dev_info.max_lu_supported &&
5203 !hba->dev_info.is_lu_power_on_wp &&
5205 hba->dev_info.is_lu_power_on_wp = true;
5210 hba->dev_info.b_advanced_rpmb_en = true;
5219 dev_dbg(hba->dev, "Set LU %x queue depth %d\n", lun, lun_qdepth);
5224 * ufshcd_sdev_init - handle initial SCSI device configurations
5233 hba = shost_priv(sdev->host);
5235 /* Mode sense(6) is not supported by UFS, so use Mode sense(10) */
5236 sdev->use_10_for_ms = 1;
5239 sdev->set_dbd_for_ms = 1;
5242 sdev->allow_restart = 1;
5245 sdev->no_report_opcodes = 1;
5248 sdev->no_write_same = 1;
5258 * ufshcd_change_queue_depth - change queue depth
5268 return scsi_change_queue_depth(sdev, min(depth, sdev->host->can_queue));
5272 * ufshcd_sdev_configure - adjust SCSI device configurations
5281 struct ufs_hba *hba = shost_priv(sdev->host);
5282 struct request_queue *q = sdev->request_queue;
5284 lim->dma_pad_mask = PRDT_DATA_BYTE_COUNT_PAD - 1;
5287 * Block runtime-pm until all consumers are added.
5291 pm_runtime_get_noresume(&sdev->sdev_gendev);
5293 sdev->rpm_autosuspend = 1;
5295 * Do not print messages during runtime PM to avoid never-ending cycles
5299 sdev->silence_suspend = 1;
5301 if (hba->vops && hba->vops->config_scsi_dev)
5302 hba->vops->config_scsi_dev(sdev);
5310 * ufshcd_sdev_destroy - remove SCSI device configurations
5318 hba = shost_priv(sdev->host);
5321 if (ufshcd_scsi_to_upiu_lun(sdev->lun) == UFS_UPIU_UFS_DEVICE_WLUN) {
5322 spin_lock_irqsave(hba->host->host_lock, flags);
5323 hba->ufs_device_wlun = NULL;
5324 spin_unlock_irqrestore(hba->host->host_lock, flags);
5325 } else if (hba->ufs_device_wlun) {
5328 /* Ensure UFS Device WLUN exists and does not disappear */
5329 spin_lock_irqsave(hba->host->host_lock, flags);
5330 if (hba->ufs_device_wlun) {
5331 supplier = &hba->ufs_device_wlun->sdev_gendev;
5334 spin_unlock_irqrestore(hba->host->host_lock, flags);
5342 device_link_remove(&sdev->sdev_gendev, supplier);
5349 * ufshcd_scsi_cmd_status - Update SCSI command result based on SCSI status
5382 * ufshcd_transfer_rsp_status - Get overall status of the response
5399 upiu_flags = lrbp->ucd_rsp_ptr->header.flags;
5400 resid = be32_to_cpu(lrbp->ucd_rsp_ptr->sr.residual_transfer_count);
5402 * Test !overflow instead of underflow to support UFS devices that do
5406 scsi_set_resid(lrbp->cmd, resid);
5411 if (hba->quirks & UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR) {
5412 if (lrbp->ucd_rsp_ptr->header.response ||
5413 lrbp->ucd_rsp_ptr->header.status)
5419 hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
5420 switch (ufshcd_get_req_rsp(lrbp->ucd_rsp_ptr)) {
5426 scsi_status = lrbp->ucd_rsp_ptr->header.status;
5439 * UFS device needs urgent BKOPs.
5441 if (!hba->pm_op_in_progress &&
5443 ufshcd_is_exception_event(lrbp->ucd_rsp_ptr))
5445 schedule_work(&hba->eeh_work);
5450 dev_err(hba->dev,
5454 dev_err(hba->dev,
5464 dev_warn(hba->dev,
5467 lrbp->task_tag);
5480 dev_err(hba->dev,
5482 ocs, lrbp->task_tag);
5489 (host_byte(result) != DID_REQUEUE) && !hba->silence_err_logs)
5490 ufshcd_print_tr(hba, lrbp->task_tag, true);
5504 if (hba->active_uic_cmd &&
5505 (hba->active_uic_cmd->command == UIC_CMD_DME_HIBER_ENTER ||
5506 hba->active_uic_cmd->command == UIC_CMD_DME_HIBER_EXIT))
5513 * ufshcd_uic_cmd_compl - handle completion of uic command
5518 * IRQ_HANDLED - If interrupt is valid
5519 * IRQ_NONE - If invalid interrupt
5526 spin_lock(hba->host->host_lock);
5527 cmd = hba->active_uic_cmd;
5532 hba->errors |= (UFSHCD_UIC_HIBERN8_MASK & intr_status);
5535 cmd->argument2 |= ufshcd_get_uic_cmd_result(hba);
5536 cmd->argument3 = ufshcd_get_dme_attr_val(hba);
5537 if (!hba->uic_async_done)
5538 cmd->cmd_active = 0;
5539 complete(&cmd->done);
5543 if (intr_status & UFSHCD_UIC_PWR_MASK && hba->uic_async_done) {
5544 cmd->cmd_active = 0;
5545 complete(hba->uic_async_done);
5553 spin_unlock(hba->host->host_lock);
5562 struct scsi_cmnd *cmd = lrbp->cmd;
5571 * ufshcd_compl_one_cqe - handle a completion queue entry
5583 lrbp = &hba->lrb[task_tag];
5584 lrbp->compl_time_stamp = ktime_get();
5585 lrbp->compl_time_stamp_local_clock = local_clock();
5586 cmd = lrbp->cmd;
5591 cmd->result = ufshcd_transfer_rsp_status(hba, lrbp, cqe);
5597 ocs = le32_to_cpu(cqe->status) & MASK_OCS;
5598 lrbp->utr_descriptor_ptr->header.ocs = ocs;
5600 complete(&hba->dev_cmd.complete);
5605 * __ufshcd_transfer_req_compl - handle SCSI and query command completion
5614 for_each_set_bit(tag, &completed_reqs, hba->nutrs)
5620 UFSHCD_POLL_FROM_INTERRUPT_CONTEXT = -1
5628 for_each_set_bit(tag, completed_reqs, hba->nutrs) {
5629 struct scsi_cmnd *cmd = hba->lrb[tag].cmd;
5633 if (scsi_cmd_to_rq(cmd)->cmd_flags & REQ_POLLED)
5649 if (hba->mcq_enabled) {
5650 hwq = &hba->uhq[queue_num];
5655 spin_lock_irqsave(&hba->outstanding_lock, flags);
5657 completed_reqs = ~tr_doorbell & hba->outstanding_reqs;
5658 WARN_ONCE(completed_reqs & ~hba->outstanding_reqs,
5660 hba->outstanding_reqs);
5665 hba->outstanding_reqs &= ~completed_reqs;
5666 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
5675 * ufshcd_mcq_compl_pending_transfer - MCQ mode function. It is
5694 for (tag = 0; tag < hba->nutrs; tag++) {
5695 lrbp = &hba->lrb[tag];
5696 cmd = lrbp->cmd;
5698 test_bit(SCMD_STATE_COMPLETE, &cmd->state))
5711 spin_lock_irqsave(&hwq->cq_lock, flags);
5712 if (cmd && !test_bit(SCMD_STATE_COMPLETE, &cmd->state)) {
5717 spin_unlock_irqrestore(&hwq->cq_lock, flags);
5725 * ufshcd_transfer_req_compl - handle SCSI and query command completion
5729 * IRQ_HANDLED - If interrupt is valid
5730 * IRQ_NONE - If invalid interrupt
5742 !(hba->quirks & UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR))
5752 ufshcd_poll(hba->host, UFSHCD_POLL_FROM_INTERRUPT_CONTEXT);
5768 mutex_lock(&hba->ee_ctrl_mutex);
5769 err = __ufshcd_write_ee_control(hba, hba->ee_ctrl_mask);
5770 mutex_unlock(&hba->ee_ctrl_mutex);
5772 dev_err(hba->dev, "%s: failed to write ee control %d\n",
5783 mutex_lock(&hba->ee_ctrl_mutex);
5786 if (ee_ctrl_mask != hba->ee_ctrl_mask)
5790 hba->ee_ctrl_mask = ee_ctrl_mask;
5793 mutex_unlock(&hba->ee_ctrl_mutex);
5798 * ufshcd_disable_ee - disable exception event
5799 * @hba: per-adapter instance
5805 * Return: zero on success, non-zero error value on failure.
5813 * ufshcd_enable_ee - enable exception event
5814 * @hba: per-adapter instance
5820 * Return: zero on success, non-zero error value on failure.
5828 * ufshcd_enable_auto_bkops - Allow device managed BKOPS
5829 * @hba: per-adapter instance
5836 * Return: zero on success, non-zero on failure.
5842 if (hba->auto_bkops_enabled)
5848 dev_err(hba->dev, "%s: failed to enable bkops %d\n",
5853 hba->auto_bkops_enabled = true;
5859 dev_err(hba->dev, "%s: failed to disable exception event %d\n",
5866 * ufshcd_disable_auto_bkops - block device in doing background operations
5867 * @hba: per-adapter instance
5871 * not-operable. Make sure to call ufshcd_enable_auto_bkops() whenever the
5875 * Return: zero on success, non-zero on failure.
5881 if (!hba->auto_bkops_enabled)
5890 dev_err(hba->dev, "%s: failed to enable exception event %d\n",
5898 dev_err(hba->dev, "%s: failed to disable bkops %d\n",
5904 hba->auto_bkops_enabled = false;
5906 hba->is_urgent_bkops_lvl_checked = false;
5912 * ufshcd_force_reset_auto_bkops - force reset auto bkops state
5917 * as well. This function would change the auto-bkops state based on
5923 hba->auto_bkops_enabled = false;
5924 hba->ee_ctrl_mask |= MASK_EE_URGENT_BKOPS;
5927 hba->auto_bkops_enabled = true;
5928 hba->ee_ctrl_mask &= ~MASK_EE_URGENT_BKOPS;
5931 hba->urgent_bkops_lvl = BKOPS_STATUS_PERF_IMPACT;
5932 hba->is_urgent_bkops_lvl_checked = false;
5942 * ufshcd_bkops_ctrl - control the auto bkops based on current bkops status
5943 * @hba: per-adapter instance
5945 * Read the bkops_status from the UFS device and Enable fBackgroundOpsEn
5947 * bkops_status is greater than or equal to the "hba->urgent_bkops_lvl",
5950 * Return: 0 for success, non-zero in case of failure.
5952 * NOTE: Caller of this function can check the "hba->auto_bkops_enabled" flag
5958 enum bkops_status status = hba->urgent_bkops_lvl;
5964 dev_err(hba->dev, "%s: failed to get BKOPS status %d\n",
5968 dev_err(hba->dev, "%s: invalid BKOPS status %d\n",
5970 err = -EINVAL;
5993 if (hba->is_urgent_bkops_lvl_checked)
5998 dev_err(hba->dev, "%s: failed to get BKOPS status %d\n",
6010 dev_err(hba->dev, "%s: device raised urgent BKOPS exception for bkops status %d\n",
6013 hba->urgent_bkops_lvl = curr_status;
6014 hba->is_urgent_bkops_lvl_checked = true;
6021 dev_err(hba->dev, "%s: failed to handle urgent bkops %d\n",
6032 if (hba->dev_info.wspecversion < 0x410)
6033 return -EOPNOTSUPP;
6036 mutex_lock(&hba->dev_cmd.lock);
6042 request->query_func = UPIU_QUERY_FUNC_STANDARD_READ_REQUEST;
6047 dev_err(hba->dev, "%s: failed to read device level exception %d\n",
6053 *exception_id = get_unaligned_be64(&upiu_resp->osf3);
6055 mutex_unlock(&hba->dev_cmd.lock);
6076 hba->dev_info.wb_enabled == enable)
6081 dev_err(hba->dev, "%s: Write Booster %s failed %d\n",
6086 hba->dev_info.wb_enabled = enable;
6087 dev_dbg(hba->dev, "%s: Write Booster %s\n",
6101 dev_err(hba->dev, "%s: WB-Buf Flush during H8 %s failed %d\n",
6105 dev_dbg(hba->dev, "%s: WB-Buf Flush during H8 %s\n",
6114 hba->dev_info.wb_buf_flush_enabled == enable)
6119 dev_err(hba->dev, "%s: WB-Buf Flush %s failed %d\n",
6124 hba->dev_info.wb_buf_flush_enabled = enable;
6125 dev_dbg(hba->dev, "%s: WB-Buf Flush %s\n",
6140 dev_err(hba->dev, "%s: Enable WB buf resize operation failed %d\n",
6158 dev_err(hba->dev, "%s: dCurWriteBoosterBufferSize read failed %d\n",
6164 dev_info(hba->dev, "dCurWBBuf: %d WB disabled until free-space is available\n",
6169 return avail_buf < hba->vps->wb_flush_threshold;
6179 hba->caps &= ~UFSHCD_CAP_WB_EN;
6181 dev_info(hba->dev, "%s: WB force disabled\n", __func__);
6195 dev_err(hba->dev,
6202 dev_err(hba->dev, "%s: WB buf lifetime is exhausted 0x%02X\n",
6207 dev_dbg(hba->dev, "%s: WB buf lifetime is 0x%02X\n",
6228 * With user-space reduction enabled, it's enough to enable flush
6231 * With user-space preserved enabled, the current-buffer
6241 dev_warn(hba->dev, "%s: dAvailableWriteBoosterBufferSize read failed %d\n",
6246 if (!hba->dev_info.b_presrv_uspc_en)
6268 * ufshcd_exception_event_handler - handle exceptions raised by device
6283 dev_err(hba->dev, "%s: failed to get exception status %d\n",
6290 if (status & hba->ee_drv_mask & MASK_EE_URGENT_BKOPS)
6293 if (status & hba->ee_drv_mask & MASK_EE_URGENT_TEMP)
6296 if (status & hba->ee_drv_mask & MASK_EE_HEALTH_CRITICAL) {
6297 hba->critical_health_count++;
6298 sysfs_notify(&hba->dev->kobj, NULL, "critical_health");
6301 if (status & hba->ee_drv_mask & MASK_EE_DEV_LVL_EXCEPTION) {
6302 atomic_inc(&hba->dev_lvl_exception_count);
6303 sysfs_notify(&hba->dev->kobj, NULL, "device_lvl_exception_count");
6309 /* Complete requests that have door-bell cleared */
6312 if (hba->mcq_enabled)
6321 * ufshcd_quirk_dl_nac_errors - This function checks if error handling is
6323 * @hba: per-adapter instance
6332 spin_lock_irqsave(hba->host->host_lock, flags);
6337 if (hba->saved_err & (CONTROLLER_FATAL_ERROR | SYSTEM_BUS_FATAL_ERROR))
6340 if ((hba->saved_err & DEVICE_FATAL_ERROR) ||
6341 ((hba->saved_err & UIC_ERROR) &&
6342 (hba->saved_uic_err & UFSHCD_UIC_DL_TCx_REPLAY_ERROR)))
6345 if ((hba->saved_err & UIC_ERROR) &&
6346 (hba->saved_uic_err & UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)) {
6351 spin_unlock_irqrestore(hba->host->host_lock, flags);
6353 spin_lock_irqsave(hba->host->host_lock, flags);
6359 if ((hba->saved_err & INT_FATAL_ERRORS) ||
6360 ((hba->saved_err & UIC_ERROR) &&
6361 (hba->saved_uic_err & ~UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)))
6367 * - If we don't get any response then do error recovery.
6368 * - If we get response then clear the DL NAC error bit.
6371 spin_unlock_irqrestore(hba->host->host_lock, flags);
6373 spin_lock_irqsave(hba->host->host_lock, flags);
6379 if (hba->saved_uic_err == UFSHCD_UIC_DL_NAC_RECEIVED_ERROR)
6380 hba->saved_err &= ~UIC_ERROR;
6382 hba->saved_uic_err &= ~UFSHCD_UIC_DL_NAC_RECEIVED_ERROR;
6383 if (!hba->saved_uic_err)
6387 spin_unlock_irqrestore(hba->host->host_lock, flags);
6394 return (hba->saved_uic_err & UFSHCD_UIC_DL_PA_INIT_ERROR) ||
6395 (hba->saved_err & (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK));
6400 lockdep_assert_held(hba->host->host_lock);
6403 if (hba->ufshcd_state != UFSHCD_STATE_ERROR) {
6404 if (hba->force_reset || ufshcd_is_link_broken(hba) ||
6406 hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED_FATAL;
6408 hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED_NON_FATAL;
6409 queue_work(hba->eh_wq, &hba->eh_work);
6415 spin_lock_irq(hba->host->host_lock);
6416 hba->force_reset = true;
6418 spin_unlock_irq(hba->host->host_lock);
6423 mutex_lock(&hba->wb_mutex);
6424 down_write(&hba->clk_scaling_lock);
6425 hba->clk_scaling.is_allowed = allow;
6426 up_write(&hba->clk_scaling_lock);
6427 mutex_unlock(&hba->wb_mutex);
6433 if (hba->clk_scaling.is_enabled)
6438 if (hba->clk_scaling.is_enabled)
6446 if (pm_runtime_status_suspended(&hba->ufs_device_wlun->sdev_gendev) ||
6447 hba->is_sys_suspended) {
6458 ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq);
6459 ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq2);
6463 pm_op = hba->is_sys_suspended ? UFS_SYSTEM_PM : UFS_RUNTIME_PM;
6468 hba->clk_scaling.is_enabled)
6473 blk_mq_quiesce_tagset(&hba->host->tag_set);
6474 cancel_work_sync(&hba->eeh_work);
6479 blk_mq_unquiesce_tagset(&hba->host->tag_set);
6488 return (!hba->is_powered || hba->shutting_down ||
6489 !hba->ufs_device_wlun ||
6490 hba->ufshcd_state == UFSHCD_STATE_ERROR ||
6491 (!(hba->saved_err || hba->saved_uic_err || hba->force_reset ||
6498 struct Scsi_Host *shost = hba->host;
6503 hba->is_sys_suspended = false;
6508 ret = pm_runtime_set_active(&hba->ufs_device_wlun->sdev_gendev);
6512 ret = pm_runtime_set_active(hba->dev);
6521 q = sdev->request_queue;
6522 if (q->dev && (q->rpm_status == RPM_SUSPENDED ||
6523 q->rpm_status == RPM_SUSPENDING))
6524 pm_request_resume(q->dev);
6536 struct ufs_pa_layer_attr *pwr_info = &hba->pwr_info;
6541 if (pwr_info->pwr_rx != ((mode >> PWRMODE_RX_OFFSET) & PWRMODE_MASK))
6544 if (pwr_info->pwr_tx != (mode & PWRMODE_MASK))
6553 u32 tag = rq->tag;
6555 struct scsi_device *sdev = cmd->device;
6556 struct Scsi_Host *shost = sdev->host;
6560 dev_err(hba->dev, "Aborting tag %d / CDB %#02x %s\n", tag,
6561 hba->lrb[tag].cmd ? hba->lrb[tag].cmd->cmnd[0] : -1,
6568 * ufshcd_abort_all - Abort all pending commands.
6577 blk_mq_tagset_busy_iter(&hba->host->tag_set, ufshcd_abort_one, &ret);
6582 for_each_set_bit(tag, &hba->outstanding_tasks, hba->nutmrs) {
6596 * ufshcd_err_handler - handle UFS errors that require s/w attention
6610 dev_info(hba->dev,
6612 __func__, ufshcd_state_name[hba->ufshcd_state],
6613 hba->is_powered, hba->shutting_down, hba->saved_err,
6614 hba->saved_uic_err, hba->force_reset,
6617 down(&hba->host_sem);
6618 spin_lock_irqsave(hba->host->host_lock, flags);
6620 if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
6621 hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
6622 spin_unlock_irqrestore(hba->host->host_lock, flags);
6623 up(&hba->host_sem);
6626 spin_unlock_irqrestore(hba->host->host_lock, flags);
6630 spin_lock_irqsave(hba->host->host_lock, flags);
6632 spin_unlock_irqrestore(hba->host->host_lock, flags);
6634 /* Complete requests that have door-bell cleared by h/w */
6636 spin_lock_irqsave(hba->host->host_lock, flags);
6641 if (hba->ufshcd_state != UFSHCD_STATE_ERROR)
6642 hba->ufshcd_state = UFSHCD_STATE_RESET;
6650 if ((hba->dev_quirks & UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS) &&
6651 !hba->force_reset) {
6654 spin_unlock_irqrestore(hba->host->host_lock, flags);
6657 spin_lock_irqsave(hba->host->host_lock, flags);
6662 if ((hba->saved_err & (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK)) ||
6663 (hba->saved_uic_err &&
6664 (hba->saved_uic_err != UFSHCD_UIC_PA_GENERIC_ERROR))) {
6665 bool pr_prdt = !!(hba->saved_err & SYSTEM_BUS_FATAL_ERROR);
6667 spin_unlock_irqrestore(hba->host->host_lock, flags);
6671 ufshcd_print_tmrs(hba, hba->outstanding_tasks);
6673 spin_lock_irqsave(hba->host->host_lock, flags);
6681 if (hba->force_reset || ufshcd_is_link_broken(hba) ||
6683 ((hba->saved_err & UIC_ERROR) &&
6684 (hba->saved_uic_err & (UFSHCD_UIC_DL_NAC_RECEIVED_ERROR |
6691 * If LINERESET was caught, UFS might have been put to PWM mode,
6694 if (hba->saved_uic_err & UFSHCD_UIC_PA_GENERIC_ERROR) {
6695 hba->saved_uic_err &= ~UFSHCD_UIC_PA_GENERIC_ERROR;
6696 if (!hba->saved_uic_err)
6697 hba->saved_err &= ~UIC_ERROR;
6698 spin_unlock_irqrestore(hba->host->host_lock, flags);
6701 spin_lock_irqsave(hba->host->host_lock, flags);
6702 if (!hba->saved_err && !needs_restore)
6706 hba->silence_err_logs = true;
6708 spin_unlock_irqrestore(hba->host->host_lock, flags);
6712 spin_lock_irqsave(hba->host->host_lock, flags);
6713 hba->silence_err_logs = false;
6722 spin_unlock_irqrestore(hba->host->host_lock, flags);
6727 down_write(&hba->clk_scaling_lock);
6728 hba->force_pmc = true;
6729 pmc_err = ufshcd_config_pwr_mode(hba, &(hba->pwr_info));
6732 dev_err(hba->dev, "%s: Failed to restore power mode, err = %d\n",
6735 hba->force_pmc = false;
6737 up_write(&hba->clk_scaling_lock);
6738 spin_lock_irqsave(hba->host->host_lock, flags);
6746 hba->force_reset = false;
6747 spin_unlock_irqrestore(hba->host->host_lock, flags);
6750 dev_err(hba->dev, "%s: reset and restore failed with err %d\n",
6754 spin_lock_irqsave(hba->host->host_lock, flags);
6759 if (hba->ufshcd_state == UFSHCD_STATE_RESET)
6760 hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
6761 if (hba->saved_err || hba->saved_uic_err)
6762 dev_err_ratelimited(hba->dev, "%s: exit: saved_err 0x%x saved_uic_err 0x%x",
6763 __func__, hba->saved_err, hba->saved_uic_err);
6766 if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL &&
6767 hba->ufshcd_state != UFSHCD_STATE_ERROR) {
6768 if (--retries)
6770 hba->ufshcd_state = UFSHCD_STATE_ERROR;
6773 spin_unlock_irqrestore(hba->host->host_lock, flags);
6775 up(&hba->host_sem);
6777 dev_info(hba->dev, "%s finished; HBA state %s\n", __func__,
6778 ufshcd_state_name[hba->ufshcd_state]);
6782 * ufshcd_update_uic_error - check and set fatal UIC error flags.
6783 * @hba: per-adapter instance
6786 * IRQ_HANDLED - If interrupt is valid
6787 * IRQ_NONE - If invalid interrupt
6804 dev_dbg(hba->dev, "%s: UIC Lane error reported\n",
6811 hba->uic_error |= UFSHCD_UIC_PA_GENERIC_ERROR;
6812 if (hba->uic_async_done && hba->active_uic_cmd)
6813 cmd = hba->active_uic_cmd;
6818 if (cmd && (cmd->command == UIC_CMD_DME_SET))
6819 hba->uic_error &= ~UFSHCD_UIC_PA_GENERIC_ERROR;
6831 hba->uic_error |= UFSHCD_UIC_DL_PA_INIT_ERROR;
6832 else if (hba->dev_quirks &
6835 hba->uic_error |=
6838 hba->uic_error |= UFSHCD_UIC_DL_TCx_REPLAY_ERROR;
6848 hba->uic_error |= UFSHCD_UIC_NL_ERROR;
6856 hba->uic_error |= UFSHCD_UIC_TL_ERROR;
6864 hba->uic_error |= UFSHCD_UIC_DME_ERROR;
6868 dev_dbg(hba->dev, "%s: UIC error flags = 0x%08x\n",
6869 __func__, hba->uic_error);
6874 * ufshcd_check_errors - Check for errors that need s/w attention
6875 * @hba: per-adapter instance
6879 * IRQ_HANDLED - If interrupt is valid
6880 * IRQ_NONE - If invalid interrupt
6887 spin_lock(hba->host->host_lock);
6888 hba->errors |= UFSHCD_ERROR_MASK & intr_status;
6890 if (hba->errors & INT_FATAL_ERRORS) {
6892 hba->errors);
6896 if (hba->errors & UIC_ERROR) {
6897 hba->uic_error = 0;
6899 if (hba->uic_error)
6903 if (hba->errors & UFSHCD_UIC_HIBERN8_MASK) {
6904 dev_err(hba->dev,
6905 "%s: Auto Hibern8 %s failed - status: 0x%08x, upmcrs: 0x%08x\n",
6906 __func__, (hba->errors & UIC_HIBERNATE_ENTER) ?
6908 hba->errors, ufshcd_get_upmcrs(hba));
6910 hba->errors);
6920 hba->saved_err |= hba->errors;
6921 hba->saved_uic_err |= hba->uic_error;
6924 if ((hba->saved_err &
6926 (hba->saved_uic_err &&
6927 (hba->saved_uic_err != UFSHCD_UIC_PA_GENERIC_ERROR))) {
6928 dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x\n",
6929 __func__, hba->saved_err,
6930 hba->saved_uic_err);
6939 * if (!queue_eh_work) -
6940 * Other errors are either non-fatal where host recovers
6944 hba->errors = 0;
6945 hba->uic_error = 0;
6946 spin_unlock(hba->host->host_lock);
6951 * ufshcd_tmc_handler - handle task management function completion
6955 * IRQ_HANDLED - If interrupt is valid
6956 * IRQ_NONE - If invalid interrupt
6964 spin_lock_irqsave(hba->host->host_lock, flags);
6966 issued = hba->outstanding_tasks & ~pending;
6967 for_each_set_bit(tag, &issued, hba->nutmrs) {
6968 struct request *req = hba->tmf_rqs[tag];
6969 struct completion *c = req->end_io_data;
6974 spin_unlock_irqrestore(hba->host->host_lock, flags);
6980 * ufshcd_handle_mcq_cq_events - handle MCQ completion queue events
6995 outstanding_cqs = (1U << hba->nr_hw_queues) - 1;
6998 nr_queues = hba->nr_hw_queues - hba->nr_queues[HCTX_TYPE_POLL];
7000 hwq = &hba->uhq[i];
7014 * ufshcd_sl_intr - Interrupt service routine
7019 * IRQ_HANDLED - If interrupt is valid
7020 * IRQ_NONE - If invalid interrupt
7029 if (intr_status & UFSHCD_ERROR_MASK || hba->errors)
7045 * ufshcd_threaded_intr - Threaded interrupt service routine
7050 * IRQ_HANDLED - If interrupt is valid
7051 * IRQ_NONE - If invalid interrupt
7058 int retries = hba->nutrs;
7063 * There could be max of hba->nutrs reqs in flight and in worst case
7068 while (intr_status && retries--) {
7080 hba->outstanding_reqs) && !ufshcd_eh_in_progress(hba)) {
7081 dev_err(hba->dev, "%s: Unhandled interrupt 0x%08x (0x%08x, 0x%08x)\n",
7093 * ufshcd_intr - Main interrupt service routine
7098 * IRQ_HANDLED - If interrupt is valid
7099 * IRQ_WAKE_THREAD - If handling is moved to threaded handled
7100 * IRQ_NONE - If invalid interrupt
7107 if (!hba->mcq_enabled || !hba->mcq_esi_enabled)
7120 if (!test_bit(tag, &hba->outstanding_tasks))
7130 dev_err(hba->dev, "Clearing task management function with tag %d %s\n",
7140 struct request_queue *q = hba->tmf_queue;
7141 struct Scsi_Host *host = hba->host;
7154 req->end_io_data = &wait;
7157 spin_lock_irqsave(host->host_lock, flags);
7159 task_tag = req->tag;
7160 hba->tmf_rqs[req->tag] = req;
7161 treq->upiu_req.req_header.task_tag = task_tag;
7163 memcpy(hba->utmrdl_base_addr + task_tag, treq, sizeof(*treq));
7166 __set_bit(task_tag, &hba->outstanding_tasks);
7168 spin_unlock_irqrestore(host->host_lock, flags);
7180 dev_err(hba->dev, "%s: task management cmd 0x%.2x timed-out\n",
7183 dev_WARN(hba->dev, "%s: unable to clear tm cmd (slot %d) after timeout\n",
7185 err = -ETIMEDOUT;
7188 memcpy(treq, hba->utmrdl_base_addr + task_tag, sizeof(*treq));
7193 spin_lock_irqsave(hba->host->host_lock, flags);
7194 hba->tmf_rqs[req->tag] = NULL;
7195 __clear_bit(task_tag, &hba->outstanding_tasks);
7196 spin_unlock_irqrestore(hba->host->host_lock, flags);
7205 * ufshcd_issue_tm_cmd - issues task management commands to controller
7212 * Return: non-zero value on error, zero on success.
7238 if (err == -ETIMEDOUT)
7243 dev_err(hba->dev, "%s: failed, ocs = 0x%x\n",
7252 * ufshcd_issue_devman_upiu_cmd - API for sending "utrd" type requests
7253 * @hba: per-adapter instance
7261 * Those type of requests uses UTP Transfer Request Descriptor - utrd.
7266 * the caller is expected to hold the hba->dev_cmd.lock mutex.
7277 const u32 tag = hba->reserved_slot;
7278 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
7282 /* Protects use of hba->reserved_slot. */
7283 lockdep_assert_held(&hba->dev_cmd.lock);
7290 req_upiu->header.task_tag = tag;
7293 memcpy(lrbp->ucd_req_ptr, req_upiu, sizeof(*lrbp->ucd_req_ptr));
7299 memcpy(lrbp->ucd_req_ptr + 1, desc_buff, *buff_len);
7303 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
7306 * ignore the returning value here - ufshcd_check_query_response is
7313 memcpy(rsp_upiu, lrbp->ucd_rsp_ptr, sizeof(*rsp_upiu));
7315 u8 *descp = (u8 *)lrbp->ucd_rsp_ptr + sizeof(*rsp_upiu);
7316 u16 resp_len = be16_to_cpu(lrbp->ucd_rsp_ptr->header
7323 dev_warn(hba->dev,
7327 err = -EINVAL;
7335 * ufshcd_exec_raw_upiu_cmd - API function for sending raw upiu commands
7336 * @hba: per-adapter instance
7338 * @rsp_upiu: upiu reply - only 8 DW as we do not support scsi commands
7362 u8 tm_f = req_upiu->header.tm_function;
7383 if (err == -ETIMEDOUT)
7388 dev_err(hba->dev, "%s: failed, ocs = 0x%x\n", __func__,
7397 err = -EINVAL;
7406 * ufshcd_advanced_rpmb_req_handler - handle advanced RPMB request
7416 * Return: zero on success, non-zero on failure.
7423 const u32 tag = hba->reserved_slot;
7424 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
7430 int ehs = (hba->capabilities & MASK_EHSLUTRD_SUPPORTED) ? 2 : 0;
7432 /* Protects use of hba->reserved_slot. */
7440 req_upiu->header.task_tag = tag;
7443 memcpy(lrbp->ucd_req_ptr, req_upiu, sizeof(*lrbp->ucd_req_ptr));
7445 memcpy(lrbp->ucd_req_ptr + 1, req_ehs, sizeof(*req_ehs));
7450 memset(lrbp->ucd_rsp_ptr, 0, sizeof(struct utp_upiu_rsp));
7456 memcpy(rsp_upiu, lrbp->ucd_rsp_ptr, sizeof(*rsp_upiu));
7458 result = (lrbp->ucd_rsp_ptr->header.response << 8) |
7459 lrbp->ucd_rsp_ptr->header.status;
7461 ehs_len = lrbp->ucd_rsp_ptr->header.ehs_length;
7472 ehs_data = (u8 *)lrbp->ucd_rsp_ptr + EHS_OFFSET_IN_RESPONSE;
7483 * ufshcd_eh_device_reset_handler() - Reset a single logical unit.
7499 host = cmd->device->host;
7502 lun = ufshcd_scsi_to_upiu_lun(cmd->device->lun);
7510 if (hba->mcq_enabled) {
7511 for (pos = 0; pos < hba->nutrs; pos++) {
7512 lrbp = &hba->lrb[pos];
7513 if (ufshcd_cmd_inflight(lrbp->cmd) &&
7514 lrbp->lun == lun) {
7516 hwq = ufshcd_mcq_req_to_hwq(hba, scsi_cmd_to_rq(lrbp->cmd));
7525 spin_lock_irqsave(&hba->outstanding_lock, flags);
7526 for_each_set_bit(pos, &hba->outstanding_reqs, hba->nutrs)
7527 if (hba->lrb[pos].lun == lun)
7529 hba->outstanding_reqs &= ~pending_reqs;
7530 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
7532 for_each_set_bit(pos, &pending_reqs, hba->nutrs) {
7534 spin_lock_irqsave(&hba->outstanding_lock, flags);
7537 hba->outstanding_reqs |= not_cleared;
7539 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
7541 dev_err(hba->dev, "%s: failed to clear request %d\n",
7548 hba->req_abort_count = 0;
7553 dev_err(hba->dev, "%s: failed with err %d\n", __func__, err);
7564 for_each_set_bit(tag, &bitmap, hba->nutrs) {
7565 lrbp = &hba->lrb[tag];
7566 lrbp->req_abort_skip = true;
7571 * ufshcd_try_to_abort_task - abort a specific task
7576 * command, and in host controller by clearing the door-bell register. There can
7581 * Return: zero on success, non-zero on failure.
7585 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
7590 for (poll_cnt = 100; poll_cnt; poll_cnt--) {
7591 err = ufshcd_issue_tm_cmd(hba, lrbp->lun, lrbp->task_tag,
7595 dev_err(hba->dev, "%s: cmd pending in the device. tag = %d\n",
7604 hba->dev,
7607 if (!ufshcd_cmd_inflight(lrbp->cmd)) {
7608 dev_info(hba->dev,
7615 dev_err(hba->dev,
7623 return -EBUSY;
7625 err = ufshcd_issue_tm_cmd(hba, lrbp->lun, lrbp->task_tag,
7630 dev_err(hba->dev, "%s: issued. tag = %d, err %d\n",
7638 dev_err(hba->dev, "%s: Failed clearing cmd at tag %d, err %d\n",
7645 * ufshcd_abort - scsi host template eh_abort_handler callback
7652 struct Scsi_Host *host = cmd->device->host;
7654 int tag = scsi_cmd_to_rq(cmd)->tag;
7655 struct ufshcd_lrb *lrbp = &hba->lrb[tag];
7663 if (!hba->mcq_enabled) {
7665 if (!test_bit(tag, &hba->outstanding_reqs)) {
7667 dev_err(hba->dev,
7669 __func__, tag, hba->outstanding_reqs, reg);
7675 dev_info(hba->dev, "%s: Device abort task at tag %d\n", __func__, tag);
7685 if (!hba->req_abort_count) {
7694 hba->req_abort_count++;
7696 if (!hba->mcq_enabled && !(reg & (1 << tag))) {
7698 dev_err(hba->dev,
7706 * Task abort to the device W-LUN is illegal. When this command
7710 * the lrb taken by this cmd and re-set it in outstanding_reqs,
7713 if (lrbp->lun == UFS_UPIU_UFS_DEVICE_WLUN) {
7714 ufshcd_update_evt_hist(hba, UFS_EVT_ABORT, lrbp->lun);
7716 spin_lock_irqsave(host->host_lock, flags);
7717 hba->force_reset = true;
7719 spin_unlock_irqrestore(host->host_lock, flags);
7723 if (hba->mcq_enabled) {
7730 if (lrbp->req_abort_skip) {
7731 dev_err(hba->dev, "%s: skipping abort\n", __func__);
7732 ufshcd_set_req_abort_skip(hba, hba->outstanding_reqs);
7738 dev_err(hba->dev, "%s: failed with err %d\n", __func__, err);
7739 ufshcd_set_req_abort_skip(hba, hba->outstanding_reqs);
7748 spin_lock_irqsave(&hba->outstanding_lock, flags);
7749 outstanding = __test_and_clear_bit(tag, &hba->outstanding_reqs);
7750 spin_unlock_irqrestore(&hba->outstanding_lock, flags);
7764 * ufshcd_process_probe_result - Process the ufshcd_probe_hba() result.
7765 * @hba: UFS host controller instance.
7774 spin_lock_irqsave(hba->host->host_lock, flags);
7776 hba->ufshcd_state = UFSHCD_STATE_ERROR;
7777 else if (hba->ufshcd_state == UFSHCD_STATE_RESET)
7778 hba->ufshcd_state = UFSHCD_STATE_OPERATIONAL;
7779 spin_unlock_irqrestore(hba->host->host_lock, flags);
7783 hba->curr_dev_pwr_mode, hba->uic_link_state);
7787 * ufshcd_host_reset_and_restore - reset and restore host controller
7788 * @hba: per-adapter instance
7791 * local and remote (device) Uni-Pro stack and the attributes
7794 * Return: zero on success, non-zero on failure.
7805 hba->silence_err_logs = true;
7807 hba->silence_err_logs = false;
7826 dev_err(hba->dev, "%s: Host init failed %d\n", __func__, err);
7832 * ufshcd_reset_and_restore - reset and re-initialize host/device
7833 * @hba: per-adapter instance
7835 * Reset and recover device, host and re-establish link. This
7838 * Return: zero on success, non-zero on failure.
7848 spin_lock_irqsave(hba->host->host_lock, flags);
7854 saved_err |= hba->saved_err;
7855 saved_uic_err |= hba->saved_uic_err;
7856 hba->saved_err = 0;
7857 hba->saved_uic_err = 0;
7858 hba->force_reset = false;
7859 hba->ufshcd_state = UFSHCD_STATE_RESET;
7860 spin_unlock_irqrestore(hba->host->host_lock, flags);
7867 spin_lock_irqsave(hba->host->host_lock, flags);
7871 if (hba->ufshcd_state != UFSHCD_STATE_OPERATIONAL &&
7872 hba->ufshcd_state != UFSHCD_STATE_ERROR &&
7873 hba->ufshcd_state != UFSHCD_STATE_EH_SCHEDULED_NON_FATAL)
7874 err = -EAGAIN;
7875 } while (err && --retries);
7878 * Inform scsi mid-layer that we did reset and allow to handle
7881 scsi_report_bus_reset(hba->host, 0);
7883 hba->ufshcd_state = UFSHCD_STATE_ERROR;
7884 hba->saved_err |= saved_err;
7885 hba->saved_uic_err |= saved_uic_err;
7887 spin_unlock_irqrestore(hba->host->host_lock, flags);
7893 * ufshcd_eh_host_reset_handler - host reset handler registered to scsi layer
7904 hba = shost_priv(cmd->device->host);
7908 * stuck in this function waiting for flush_work(&hba->eh_work). And
7912 if (hba->pm_op_in_progress) {
7919 spin_lock_irqsave(hba->host->host_lock, flags);
7920 hba->force_reset = true;
7922 dev_err(hba->dev, "%s: reset in progress - 1\n", __func__);
7923 spin_unlock_irqrestore(hba->host->host_lock, flags);
7925 flush_work(&hba->eh_work);
7927 spin_lock_irqsave(hba->host->host_lock, flags);
7928 if (hba->ufshcd_state == UFSHCD_STATE_ERROR)
7930 spin_unlock_irqrestore(hba->host->host_lock, flags);
7936 * ufshcd_get_max_icc_level - calculate the ICC level
7951 for (i = start_scan; i >= 0; i--) {
7982 * ufshcd_find_max_sup_active_icc_level - calculate the max ICC level
7984 * @hba: per-adapter instance
7994 if (!hba->vreg_info.vcc || !hba->vreg_info.vccq ||
7995 !hba->vreg_info.vccq2) {
7998 * never-ending cycles of messages written back to storage by
8002 dev_dbg(hba->dev,
8008 if (hba->vreg_info.vcc->max_uA)
8010 hba->vreg_info.vcc->max_uA,
8011 POWER_DESC_MAX_ACTV_ICC_LVLS - 1,
8014 if (hba->vreg_info.vccq->max_uA)
8016 hba->vreg_info.vccq->max_uA,
8020 if (hba->vreg_info.vccq2->max_uA)
8022 hba->vreg_info.vccq2->max_uA,
8042 dev_err(hba->dev,
8049 dev_dbg(hba->dev, "%s: setting icc_level 0x%x", __func__, icc_level);
8055 dev_err(hba->dev,
8065 struct Scsi_Host *shost = sdev->host;
8068 blk_pm_runtime_init(sdev->request_queue, &sdev->sdev_gendev);
8069 if (sdev->rpm_autosuspend)
8070 pm_runtime_set_autosuspend_delay(&sdev->sdev_gendev,
8071 shost->rpm_autosuspend_delay);
8076 * ufshcd_scsi_add_wlus - Adds required W-LUs
8077 * @hba: per-adapter instance
8079 * UFS device specification requires the UFS devices to support 4 well known
8082 * "UFS Device" (address: 50h)
8085 * UFS device's power management needs to be controlled by "POWER CONDITION"
8087 * will take effect only when its sent to "UFS device" well known logical unit
8089 * order for the UFS host driver to send the SSU command for power management.
8098 * Return: zero on success (all required W-LUs are added successfully),
8099 * non-zero error value on failure (if failed to add any of the required W-LU).
8106 hba->ufs_device_wlun = __scsi_add_device(hba->host, 0, 0,
8108 if (IS_ERR(hba->ufs_device_wlun)) {
8109 ret = PTR_ERR(hba->ufs_device_wlun);
8110 hba->ufs_device_wlun = NULL;
8113 scsi_device_put(hba->ufs_device_wlun);
8115 sdev_rpmb = __scsi_add_device(hba->host, 0, 0,
8124 sdev_boot = __scsi_add_device(hba->host, 0, 0,
8127 dev_err(hba->dev, "%s: BOOT WLUN not found\n", __func__);
8135 scsi_remove_device(hba->ufs_device_wlun);
8142 struct ufs_dev_info *dev_info = &hba->dev_info;
8151 * Probe WB only for UFS-2.2 and UFS-3.1 (and later) devices or
8152 * UFS devices with quirk UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES
8155 if (!(dev_info->wspecversion >= 0x310 ||
8156 dev_info->wspecversion == 0x220 ||
8157 (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES)))
8171 dev_info->wb_buffer_type = desc_buf[DEVICE_DESC_PARAM_WB_TYPE];
8173 dev_info->ext_wb_sup = get_unaligned_be16(desc_buf +
8176 dev_info->b_presrv_uspc_en =
8179 if (dev_info->wb_buffer_type == WB_BUF_MODE_SHARED) {
8192 dev_info->wb_dedicated_lu = lun;
8207 hba->caps &= ~UFSHCD_CAP_WB_EN;
8212 struct ufs_dev_info *dev_info = &hba->dev_info;
8216 if (!(hba->caps & UFSHCD_CAP_TEMP_NOTIF) || dev_info->wspecversion < 0x300)
8237 if (hba->dev_info.wspecversion < 0x410)
8245 atomic_set(&hba->dev_lvl_exception_count, 0);
8251 struct ufs_dev_info *dev_info = &hba->dev_info;
8254 int host_rtt_cap = hba->vops && hba->vops->max_num_rtt ?
8255 hba->vops->max_num_rtt : hba->nortt;
8257 /* RTT override makes sense only for UFS-4.0 and above */
8258 if (dev_info->wspecversion < 0x400)
8263 dev_err(hba->dev, "failed reading bMaxNumOfRTT\n");
8271 rtt = min_t(int, dev_info->rtt_cap, host_rtt_cap);
8278 dev_err(hba->dev, "failed writing bMaxNumOfRTT\n");
8285 struct ufs_dev_info *dev_info = &hba->dev_info;
8290 for (f = fixups; f->quirk; f++) {
8291 if ((f->wmanufacturerid == dev_info->wmanufacturerid ||
8292 f->wmanufacturerid == UFS_ANY_VENDOR) &&
8293 ((dev_info->model &&
8294 STR_PRFX_EQUAL(f->model, dev_info->model)) ||
8295 !strcmp(f->model, UFS_ANY_MODEL)))
8296 hba->dev_quirks |= f->quirk;
8318 if (ts64.tv_sec < hba->dev_info.rtc_time_baseline) {
8319 dev_warn_once(hba->dev, "%s: Current time precedes previous setting!\n", __func__);
8324 * The Absolute RTC mode has a 136-year limit, spanning from 2010 to 2146. If a time beyond
8327 val = ts64.tv_sec - hba->dev_info.rtc_time_baseline;
8338 dev_err(hba->dev, "%s: Failed to update rtc %d\n", __func__, err);
8339 else if (hba->dev_info.rtc_type == UFS_RTC_RELATIVE)
8340 hba->dev_info.rtc_time_baseline = ts64.tv_sec;
8351 hba->ufshcd_state == UFSHCD_STATE_OPERATIONAL &&
8352 !hba->clk_gating.active_reqs)
8355 if (ufshcd_is_ufs_dev_active(hba) && hba->dev_info.rtc_update_period)
8356 schedule_delayed_work(&hba->ufs_rtc_update_work,
8357 msecs_to_jiffies(hba->dev_info.rtc_update_period));
8363 struct ufs_dev_info *dev_info = &hba->dev_info;
8366 dev_info->rtc_type = UFS_RTC_ABSOLUTE;
8370 * 00:00:00 UTC on January 1, 1970, and UFS ABS RTC is elapsed from January 1st
8373 dev_info->rtc_time_baseline = mktime64(2010, 1, 1, 0, 0, 0) -
8376 dev_info->rtc_type = UFS_RTC_RELATIVE;
8377 dev_info->rtc_time_baseline = 0;
8385 dev_info->rtc_update_period = 0;
8393 struct ufs_dev_info *dev_info = &hba->dev_info;
8397 err = -ENOMEM;
8404 dev_err(hba->dev, "%s: Failed reading Device Desc. err = %d\n",
8413 dev_info->wmanufacturerid = desc_buf[DEVICE_DESC_PARAM_MANF_ID] << 8 |
8417 dev_info->wspecversion = desc_buf[DEVICE_DESC_PARAM_SPEC_VER] << 8 |
8419 dev_info->bqueuedepth = desc_buf[DEVICE_DESC_PARAM_Q_DPTH];
8421 dev_info->rtt_cap = desc_buf[DEVICE_DESC_PARAM_RTT_CAP];
8426 &dev_info->model, SD_ASCII_STD);
8428 dev_err(hba->dev, "%s: Failed reading Product Name. err = %d\n",
8433 hba->luns_avail = desc_buf[DEVICE_DESC_PARAM_NUM_LU] +
8442 if (dev_info->wspecversion >= 0x410) {
8443 hba->critical_health_count = 0;
8464 struct ufs_dev_info *dev_info = &hba->dev_info;
8466 kfree(dev_info->model);
8467 dev_info->model = NULL;
8471 * ufshcd_quirk_tune_host_pa_tactivate - Ensures that host PA_TACTIVATE is
8473 * @hba: per-adapter instance
8475 * Some UFS devices require host PA_TACTIVATE to be lower than device
8479 * Return: zero on success, non-zero error value on failure.
8501 dev_err(hba->dev, "%s: invalid host PA_GRANULARITY %d",
8503 return -EINVAL;
8508 dev_err(hba->dev, "%s: invalid device PA_GRANULARITY %d",
8510 return -EINVAL;
8522 pa_tactivate_us = pa_tactivate * gran_to_us_table[granularity - 1];
8524 gran_to_us_table[peer_granularity - 1];
8530 gran_to_us_table[peer_granularity - 1];
8541 * ufshcd_quirk_override_pa_h8time - Ensures proper adjustment of PA_HIBERN8TIME.
8542 * @hba: per-adapter instance
8544 * Some UFS devices require specific adjustments to the PA_HIBERN8TIME parameter
8555 dev_err(hba->dev, "Failed to get PA_HIBERN8TIME: %d\n", ret);
8562 dev_err(hba->dev, "Failed updating PA_HIBERN8TIME: %d\n", ret);
8569 if (hba->dev_quirks & UFS_DEVICE_QUIRK_PA_TACTIVATE)
8573 if (hba->dev_quirks & UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE)
8576 if (hba->dev_quirks & UFS_DEVICE_QUIRK_PA_HIBER8TIME)
8582 hba->ufs_stats.hibern8_exit_cnt = 0;
8583 hba->ufs_stats.last_hibern8_exit_tstamp = ktime_set(0, 0);
8584 hba->req_abort_count = 0;
8594 err = -ENOMEM;
8601 dev_err(hba->dev, "%s: Failed reading Geometry Desc. err = %d\n",
8607 hba->dev_info.max_lu_supported = 32;
8609 hba->dev_info.max_lu_supported = 8;
8647 hba->dev_ref_clk_freq =
8650 if (hba->dev_ref_clk_freq == REF_CLK_FREQ_INVAL)
8651 dev_err(hba->dev,
8659 u32 freq = hba->dev_ref_clk_freq;
8665 dev_err(hba->dev, "failed reading bRefClkFreq. err = %d\n",
8677 dev_err(hba->dev, "bRefClkFreq setting to %lu Hz failed\n",
8682 dev_dbg(hba->dev, "bRefClkFreq setting to %lu Hz succeeded\n",
8694 /* Init UFS geometry descriptor related parameters */
8699 /* Check and apply UFS device quirks */
8702 dev_err(hba->dev, "%s: Failed getting device info. err = %d\n",
8713 hba->dev_info.f_power_on_wp_en = flag;
8715 /* Probe maximum power mode co-supported by both UFS host and device */
8717 dev_err(hba->dev,
8729 struct ufs_dev_info *dev_info = &hba->dev_info;
8732 if (dev_info->wspecversion < 0x400)
8741 request->query_func = UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST;
8743 upiu_data = (struct utp_upiu_query_v4_0 *)&request->upiu_req;
8745 put_unaligned_be64(ktime_get_real_ns(), &upiu_data->osf3);
8750 dev_err(hba->dev, "%s: failed to set timestamp %d\n",
8757 * ufshcd_add_lus - probe and add UFS logical units
8758 * @hba: per-adapter instance
8771 /* Initialize devfreq after UFS device is detected */
8773 memcpy(&hba->clk_scaling.saved_pwr_info,
8774 &hba->pwr_info,
8776 hba->clk_scaling.is_allowed = true;
8782 hba->clk_scaling.is_enabled = true;
8787 * The RTC update code accesses the hba->ufs_device_wlun->sdev_gendev
8791 schedule_delayed_work(&hba->ufs_rtc_update_work,
8795 scsi_scan_host(hba->host);
8801 /* SDB - Single Doorbell */
8807 dmam_free_coherent(hba->dev, ucdl_size, hba->ucdl_base_addr,
8808 hba->ucdl_dma_addr);
8811 dmam_free_coherent(hba->dev, utrdl_size, hba->utrdl_base_addr,
8812 hba->utrdl_dma_addr);
8814 devm_kfree(hba->dev, hba->lrb);
8820 int old_nutrs = hba->nutrs;
8826 hba->nutrs = ret;
8835 if (hba->nutrs != old_nutrs) {
8847 hba->host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
8848 hba->reserved_slot = hba->nutrs - UFSHCD_NUM_RESERVED;
8852 hba->nutrs = old_nutrs;
8862 hba->mcq_esi_enabled = !ret;
8863 dev_info(hba->dev, "ESI %sconfigured\n", ret ? "is not " : "");
8866 if (hba->quirks & UFSHCD_QUIRK_MCQ_BROKEN_INTR)
8870 ufshcd_mcq_config_mac(hba, hba->nutrs);
8872 dev_info(hba->dev, "MCQ configured, nr_queues=%d, io_queues=%d, read_queue=%d, poll_queues=%d, queue_depth=%d\n",
8873 hba->nr_hw_queues, hba->nr_queues[HCTX_TYPE_DEFAULT],
8874 hba->nr_queues[HCTX_TYPE_READ], hba->nr_queues[HCTX_TYPE_POLL],
8875 hba->nutrs);
8884 /* UFS device is also active now */
8890 if (!hba->max_pwr_info.is_valid)
8897 if (hba->dev_ref_clk_freq != REF_CLK_FREQ_INVAL)
8900 ret = ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info);
8902 dev_err(hba->dev, "%s: Failed setting power mode, err = %d\n",
8914 WARN_ON_ONCE(!hba->scsi_host_added);
8916 hba->ufshcd_state = UFSHCD_STATE_RESET;
8922 if (hba->quirks & UFSHCD_QUIRK_SKIP_PH_CONFIGURATION)
8932 if (hba->mcq_enabled && !init_dev_params) {
8942 /* Initiate UFS initialization, and waiting until completion */
8948 * Initialize UFS device parameters used by driver, these
8949 * parameters are associated with UFS descriptors.
8956 hba->quirks & UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH) {
8966 * ufshcd_probe_hba - probe hba to detect device and initialize it
8967 * @hba: per-adapter instance
8970 * Execute link-startup and verify device initialization
8978 if (!hba->pm_op_in_progress &&
8979 (hba->quirks & UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH)) {
8986 dev_err(hba->dev, "Host controller enable failed\n");
9001 * bActiveICCLevel is volatile for UFS device (as per latest v2.1 spec)
9002 * and for removable UFS card as well, hence always set the parameter.
9008 /* Enable UFS Write Booster if supported */
9011 if (hba->ee_usr_mask)
9019 * ufshcd_async_scan - asynchronous execution for probing hba
9029 down(&hba->host_sem);
9030 /* Initialize hba, detect and initialize UFS device */
9034 up(&hba->host_sem);
9038 /* Probe and add UFS logical units */
9042 pm_runtime_put_sync(hba->dev);
9045 dev_err(hba->dev, "%s failed: %d\n", __func__, ret);
9050 struct ufs_hba *hba = shost_priv(scmd->device->host);
9052 if (!hba->system_suspending) {
9064 dev_info(hba->dev, "%s() finished; outstanding_tasks = %#lx.\n",
9065 __func__, hba->outstanding_tasks);
9067 return scsi_host_busy(hba->host) ? SCSI_EH_RESET_TIMER : SCSI_EH_DONE;
9101 .this_id = -1,
9125 if (!vreg->max_uA)
9128 ret = regulator_set_load(vreg->reg, ua);
9131 __func__, vreg->name, ua, ret);
9140 return ufshcd_config_vreg_load(hba->dev, vreg, UFS_VREG_LPM_LOAD_UA);
9149 return ufshcd_config_vreg_load(hba->dev, vreg, vreg->max_uA);
9155 if (regulator_count_voltages(vreg->reg) <= 0)
9158 return ufshcd_config_vreg_load(dev, vreg, on ? vreg->max_uA : 0);
9165 if (!vreg || vreg->enabled)
9170 ret = regulator_enable(vreg->reg);
9173 vreg->enabled = true;
9176 __func__, vreg->name, ret);
9185 if (!vreg || !vreg->enabled || vreg->always_on)
9188 ret = regulator_disable(vreg->reg);
9193 vreg->enabled = false;
9196 __func__, vreg->name, ret);
9205 struct device *dev = hba->dev;
9206 struct ufs_vreg_info *info = &hba->vreg_info;
9208 ret = ufshcd_toggle_vreg(dev, info->vcc, on);
9212 ret = ufshcd_toggle_vreg(dev, info->vccq, on);
9216 ret = ufshcd_toggle_vreg(dev, info->vccq2, on);
9220 ufshcd_toggle_vreg(dev, info->vccq2, false);
9221 ufshcd_toggle_vreg(dev, info->vccq, false);
9222 ufshcd_toggle_vreg(dev, info->vcc, false);
9229 struct ufs_vreg_info *info = &hba->vreg_info;
9231 return ufshcd_toggle_vreg(hba->dev, info->vdd_hba, on);
9241 vreg->reg = devm_regulator_get(dev, vreg->name);
9242 if (IS_ERR(vreg->reg)) {
9243 ret = PTR_ERR(vreg->reg);
9245 __func__, vreg->name, ret);
9255 struct device *dev = hba->dev;
9256 struct ufs_vreg_info *info = &hba->vreg_info;
9258 ret = ufshcd_get_vreg(dev, info->vcc);
9262 ret = ufshcd_get_vreg(dev, info->vccq);
9264 ret = ufshcd_get_vreg(dev, info->vccq2);
9271 struct ufs_vreg_info *info = &hba->vreg_info;
9273 return ufshcd_get_vreg(hba->dev, info->vdd_hba);
9280 struct list_head *head = &hba->clk_list_head;
9292 if (!IS_ERR_OR_NULL(clki->clk)) {
9298 clki->keep_link_active)
9301 clk_state_changed = on ^ clki->enabled;
9302 if (on && !clki->enabled) {
9303 ret = clk_prepare_enable(clki->clk);
9305 dev_err(hba->dev, "%s: %s prepare enable failed, %d\n",
9306 __func__, clki->name, ret);
9309 } else if (!on && clki->enabled) {
9310 clk_disable_unprepare(clki->clk);
9312 clki->enabled = on;
9313 dev_dbg(hba->dev, "%s: clk: %s %sabled\n", __func__,
9314 clki->name, on ? "en" : "dis");
9327 if (!IS_ERR_OR_NULL(clki->clk) && clki->enabled)
9328 clk_disable_unprepare(clki->clk);
9330 } else if (!ret && on && hba->clk_gating.is_initialized) {
9331 scoped_guard(spinlock_irqsave, &hba->clk_gating.lock)
9332 hba->clk_gating.state = CLKS_ON;
9334 hba->clk_gating.state);
9347 int ret = device_property_read_u32(hba->dev, "ref-clk-freq", &freq);
9350 dev_dbg(hba->dev, "Cannot query 'ref-clk-freq' property = %d", ret);
9361 struct device *dev = hba->dev;
9362 struct list_head *head = &hba->clk_list_head;
9368 if (!clki->name)
9371 clki->clk = devm_clk_get(dev, clki->name);
9372 if (IS_ERR(clki->clk)) {
9373 ret = PTR_ERR(clki->clk);
9375 __func__, clki->name, ret);
9384 if (!strcmp(clki->name, "ref_clk"))
9385 ufshcd_parse_dev_ref_clk_freq(hba, clki->clk);
9387 if (clki->max_freq) {
9388 ret = clk_set_rate(clki->clk, clki->max_freq);
9390 dev_err(hba->dev, "%s: %s clk set rate(%dHz) failed, %d\n",
9391 __func__, clki->name,
9392 clki->max_freq, ret);
9395 clki->curr_freq = clki->max_freq;
9398 clki->name, clk_get_rate(clki->clk));
9402 if (hba->use_pm_opp) {
9405 dev_err(hba->dev, "%s: failed to set OPP: %d", __func__,
9419 if (!hba->vops)
9424 dev_err_probe(hba->dev, err,
9433 if (!hba->vops)
9444 * Handle host controller power separately from the UFS device power
9445 * rails as it will help controlling the UFS host controller power
9446 * collapse easily which is different than UFS device power collapse.
9462 if (hba->dev_ref_clk_freq == REF_CLK_FREQ_INVAL)
9463 hba->dev_ref_clk_freq = ufshcd_parse_ref_clk_property(hba);
9484 hba->is_powered = true;
9499 if (hba->is_powered) {
9503 if (hba->eh_wq)
9504 destroy_workqueue(hba->eh_wq);
9510 hba->is_powered = false;
9542 * ufshcd_set_dev_pwr_mode - sends START STOP UNIT command to set device
9558 spin_lock_irqsave(hba->host->host_lock, flags);
9559 sdp = hba->ufs_device_wlun;
9563 ret = -ENODEV;
9564 spin_unlock_irqrestore(hba->host->host_lock, flags);
9570 * If scsi commands fail, the scsi mid-layer schedules scsi error-
9575 hba->host->eh_noresume = 1;
9590 ret = -EIO;
9593 hba->curr_dev_pwr_mode = pwr_mode;
9597 hba->host->eh_noresume = 0;
9607 if (req_link_state == hba->uic_link_state)
9615 dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
9626 (!check_for_bkops || !hba->auto_bkops_enabled)) {
9639 dev_err(hba->dev, "%s: hibern8 enter failed %d\n",
9664 * It seems some UFS devices may keep drawing more than sleep current
9665 * (atleast for 500us) from UFS rails (especially from VCCQ rail).
9666 * To avoid this situation, add 2ms delay before putting these UFS
9670 hba->dev_quirks & UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM)
9674 * If UFS device is either in UFS_Sleep turn off VCC rail to save some
9677 * If UFS device and link is in OFF state, all power supplies (VCC,
9679 * required. If UFS link is inactive (Hibern8 or OFF state) and device
9689 !hba->dev_info.is_lu_power_on_wp) {
9693 ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false);
9696 ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq);
9697 ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq2);
9702 * Some UFS devices require delay after VCC power rail is turned-off.
9704 if (vcc_off && hba->vreg_info.vcc &&
9705 hba->dev_quirks & UFS_DEVICE_QUIRK_DELAY_AFTER_LPM)
9715 !hba->dev_info.is_lu_power_on_wp) {
9719 ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq);
9722 ret = ufshcd_config_vreg_hpm(hba, hba->vreg_info.vccq2);
9726 ret = ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, true);
9731 ufshcd_config_vreg_lpm(hba, hba->vreg_info.vccq);
9733 ufshcd_toggle_vreg(hba->dev, hba->vreg_info.vcc, false);
9759 hba->pm_op_in_progress = true;
9762 hba->rpm_lvl : hba->spm_lvl;
9775 hba->clk_gating.is_suspended = true;
9785 if ((req_dev_pwr_mode == hba->curr_dev_pwr_mode) &&
9786 (req_link_state == hba->uic_link_state))
9789 /* UFS device & link must be active before we enter in this function */
9794 ret = -EBUSY;
9813 ret = -EBUSY;
9825 hba->dev_info.b_rpm_dev_flush_capable =
9826 hba->auto_bkops_enabled ||
9833 flush_work(&hba->eeh_work);
9839 if (req_dev_pwr_mode != hba->curr_dev_pwr_mode) {
9844 if (!hba->dev_info.b_rpm_dev_flush_capable) {
9853 ret = -EBUSY;
9873 ret = -EBUSY;
9888 cancel_delayed_work_sync(&hba->ufs_rtc_update_work);
9917 hba->dev_info.b_rpm_dev_flush_capable = false;
9919 if (hba->dev_info.b_rpm_dev_flush_capable) {
9920 schedule_delayed_work(&hba->rpm_dev_flush_recheck_work,
9926 hba->clk_gating.is_suspended = false;
9929 hba->pm_op_in_progress = false;
9937 enum uic_link_state old_link_state = hba->uic_link_state;
9939 hba->pm_op_in_progress = true;
9958 dev_err(hba->dev, "%s: hibern8 exit failed %d\n",
9983 schedule_delayed_work(&hba->ufs_rtc_update_work,
9992 * keep auto-bkops enabled or else disable it.
9996 if (hba->ee_usr_mask)
10002 if (hba->dev_info.b_rpm_dev_flush_capable) {
10003 hba->dev_info.b_rpm_dev_flush_capable = false;
10004 cancel_delayed_work(&hba->rpm_dev_flush_recheck_work);
10019 hba->clk_gating.is_suspended = false;
10021 hba->pm_op_in_progress = false;
10032 hba = shost_priv(sdev->host);
10036 dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
10040 hba->curr_dev_pwr_mode, hba->uic_link_state);
10052 hba = shost_priv(sdev->host);
10056 dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
10060 hba->curr_dev_pwr_mode, hba->uic_link_state);
10074 hba = shost_priv(sdev->host);
10075 down(&hba->host_sem);
10076 hba->system_suspending = true;
10083 dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
10084 up(&hba->host_sem);
10089 hba->is_sys_suspended = true;
10092 hba->curr_dev_pwr_mode, hba->uic_link_state);
10104 hba = shost_priv(sdev->host);
10111 dev_err(&sdev->sdev_gendev, "%s failed: %d\n", __func__, ret);
10115 hba->curr_dev_pwr_mode, hba->uic_link_state);
10117 hba->is_sys_suspended = false;
10118 hba->system_suspending = false;
10119 up(&hba->host_sem);
10125 * ufshcd_suspend - helper function for suspend operations
10129 * and set vreg and hba-vreg in lpm mode.
10137 if (!hba->is_powered)
10150 hba->clk_gating.state = CLKS_OFF;
10152 hba->clk_gating.state);
10164 * ufshcd_resume - helper function for resume operations
10170 * Return: 0 for success and non-zero for failure.
10176 if (!hba->is_powered)
10205 * ufshcd_system_suspend - system suspend callback
10206 * @dev: Device associated with the UFS controller.
10211 * Return: 0 for success and non-zero for failure.
10219 if (pm_runtime_suspended(hba->dev))
10226 hba->curr_dev_pwr_mode, hba->uic_link_state);
10232 * ufshcd_system_resume - system resume callback
10233 * @dev: Device associated with the UFS controller.
10238 * Return: 0 for success and non-zero for failure.
10246 if (pm_runtime_suspended(hba->dev))
10254 hba->curr_dev_pwr_mode, hba->uic_link_state);
10263 * ufshcd_runtime_suspend - runtime suspend callback
10264 * @dev: Device associated with the UFS controller.
10268 * Return: 0 for success and non-zero for failure.
10280 hba->curr_dev_pwr_mode, hba->uic_link_state);
10286 * ufshcd_runtime_resume - runtime resume routine
10287 * @dev: Device associated with the UFS controller.
10307 hba->curr_dev_pwr_mode, hba->uic_link_state);
10316 struct ufs_hba *hba = shost_priv(sdev->host);
10318 down(&hba->host_sem);
10319 hba->shutting_down = true;
10320 up(&hba->host_sem);
10325 shost_for_each_device(sdev, hba->host) {
10326 if (sdev == hba->ufs_device_wlun)
10328 mutex_lock(&sdev->state_mutex);
10330 mutex_unlock(&sdev->state_mutex);
10335 * Next, turn off the UFS controller and the UFS regulators. Disable
10341 hba->is_powered = false;
10345 * ufshcd_remove - de-allocate SCSI host and host memory space
10351 if (hba->ufs_device_wlun)
10355 ufs_sysfs_remove_nodes(hba->dev);
10356 cancel_delayed_work_sync(&hba->ufs_rtc_update_work);
10357 blk_mq_destroy_queue(hba->tmf_queue);
10358 blk_put_queue(hba->tmf_queue);
10359 blk_mq_free_tag_set(&hba->tmf_tag_set);
10360 if (hba->scsi_host_added)
10361 scsi_remove_host(hba->host);
10363 ufshcd_disable_intr(hba, hba->intr_mask);
10389 ufshcd_writel(hba, lower_32_bits(hba->utrdl_dma_addr),
10391 ufshcd_writel(hba, upper_32_bits(hba->utrdl_dma_addr),
10393 ufshcd_writel(hba, lower_32_bits(hba->utmrdl_dma_addr),
10395 ufshcd_writel(hba, upper_32_bits(hba->utmrdl_dma_addr),
10417 * ufshcd_set_dma_mask - Set dma mask based on the controller
10421 * Return: 0 for success, non-zero for failure.
10425 if (hba->vops && hba->vops->set_dma_mask)
10426 return hba->vops->set_dma_mask(hba);
10427 if (hba->capabilities & MASK_64_ADDRESSING_SUPPORT) {
10428 if (!dma_set_mask_and_coherent(hba->dev, DMA_BIT_MASK(64)))
10431 return dma_set_mask_and_coherent(hba->dev, DMA_BIT_MASK(32));
10435 * ufshcd_devres_release - devres cleanup handler, invoked during release of
10436 * hba->dev
10445 * ufshcd_alloc_host - allocate Host Bus Adapter (HBA)
10449 * Return: 0 on success, non-zero value on failure.
10464 err = -ENODEV;
10472 err = -ENOMEM;
10482 host->nr_maps = HCTX_TYPE_POLL + 1;
10484 hba->host = host;
10485 hba->dev = dev;
10486 hba->dev_ref_clk_freq = REF_CLK_FREQ_INVAL;
10487 hba->nop_out_timeout = NOP_OUT_TIMEOUT;
10489 INIT_LIST_HEAD(&hba->clk_list_head);
10490 spin_lock_init(&hba->outstanding_lock);
10524 dev_err(hba->dev, "MCQ mode is disabled, err=%d\n",
10528 if (!is_mcq_supported(hba) && !hba->lsdb_sup) {
10529 dev_err(hba->dev,
10532 return -EINVAL;
10535 err = scsi_add_host(hba->host, hba->dev);
10537 dev_err(hba->dev, "scsi_add_host failed\n");
10540 hba->scsi_host_added = true;
10542 hba->tmf_tag_set = (struct blk_mq_tag_set) {
10544 .queue_depth = hba->nutmrs,
10547 err = blk_mq_alloc_tag_set(&hba->tmf_tag_set);
10550 hba->tmf_queue = blk_mq_alloc_queue(&hba->tmf_tag_set, NULL, NULL);
10551 if (IS_ERR(hba->tmf_queue)) {
10552 err = PTR_ERR(hba->tmf_queue);
10555 hba->tmf_rqs = devm_kcalloc(hba->dev, hba->nutmrs,
10556 sizeof(*hba->tmf_rqs), GFP_KERNEL);
10557 if (!hba->tmf_rqs) {
10558 err = -ENOMEM;
10565 blk_mq_destroy_queue(hba->tmf_queue);
10566 blk_put_queue(hba->tmf_queue);
10569 blk_mq_free_tag_set(&hba->tmf_tag_set);
10572 if (hba->scsi_host_added)
10573 scsi_remove_host(hba->host);
10579 * ufshcd_init - Driver initialization routine
10580 * @hba: per-adapter instance
10584 * Return: 0 on success, non-zero value on failure.
10589 struct Scsi_Host *host = hba->host;
10590 struct device *dev = hba->dev;
10600 dev_err(hba->dev,
10602 err = -ENODEV;
10606 hba->mmio_base = mmio_base;
10607 hba->irq = irq;
10608 hba->vps = &ufs_hba_vps;
10614 spin_lock_init(&hba->clk_gating.lock);
10621 * Default power saving mode is to keep UFS link in Hibern8 state
10622 * and UFS device in sleep state.
10624 hba->rpm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
10627 hba->spm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
10631 init_completion(&hba->dev_cmd.complete);
10642 /* Get UFS version supported by the controller */
10643 hba->ufs_version = ufshcd_get_ufs_version(hba);
10646 hba->intr_mask = ufshcd_get_intr_mask(hba);
10650 dev_err(hba->dev, "set dma mask failed\n");
10657 dev_err(hba->dev, "Memory allocation failed\n");
10664 host->can_queue = hba->nutrs - UFSHCD_NUM_RESERVED;
10665 host->cmd_per_lun = hba->nutrs - UFSHCD_NUM_RESERVED;
10666 host->max_id = UFSHCD_MAX_ID;
10667 host->max_lun = UFS_MAX_LUNS;
10668 host->max_channel = UFSHCD_MAX_CHANNEL;
10669 host->unique_id = host->host_no;
10670 host->max_cmd_len = UFS_CDB_SIZE;
10671 host->queuecommand_may_block = !!(hba->caps & UFSHCD_CAP_CLK_GATING);
10674 if (host->rpm_autosuspend_delay == 0)
10675 host->rpm_autosuspend_delay = RPM_AUTOSUSPEND_DELAY_MS;
10677 hba->max_pwr_info.is_valid = false;
10680 hba->eh_wq = alloc_ordered_workqueue("ufs_eh_wq_%d", WQ_MEM_RECLAIM,
10681 hba->host->host_no);
10682 if (!hba->eh_wq) {
10683 dev_err(hba->dev, "%s: failed to create eh workqueue\n",
10685 err = -ENOMEM;
10688 INIT_WORK(&hba->eh_work, ufshcd_err_handler);
10689 INIT_WORK(&hba->eeh_work, ufshcd_exception_event_handler);
10691 sema_init(&hba->host_sem, 1);
10694 mutex_init(&hba->uic_cmd_mutex);
10697 mutex_init(&hba->dev_cmd.lock);
10700 mutex_init(&hba->ee_ctrl_mutex);
10702 mutex_init(&hba->wb_mutex);
10703 init_rwsem(&hba->clk_scaling_lock);
10711 * registering UFS controller interrupt handler, clear any pending UFS
10712 * interrupt status and disable all the UFS interrupts.
10718 * Make sure that UFS interrupts are disabled and any pending interrupt
10719 * status is cleared before registering UFS interrupt handler.
10727 dev_err(hba->dev, "request irq failed\n");
10730 hba->is_irq_enabled = true;
10741 dev_err(hba->dev, "Host controller enable failed\n");
10747 INIT_DELAYED_WORK(&hba->rpm_dev_flush_recheck_work, ufshcd_rpm_dev_flush_recheck_work);
10748 INIT_DELAYED_WORK(&hba->ufs_rtc_update_work, ufshcd_rtc_work);
10750 /* Set the default auto-hiberate idle timer value to 150 ms */
10751 if (ufshcd_is_auto_hibern8_supported(hba) && !hba->ahit) {
10752 hba->ahit = FIELD_PREP(UFSHCI_AHIBERN8_TIMER_MASK, 150) |
10760 * We are assuming that device wasn't put in sleep/power-down
10767 /* Initialize hba, detect and initialize UFS device */
10770 hba->ufshcd_state = UFSHCD_STATE_RESET;
10776 if (hba->quirks & UFSHCD_QUIRK_SKIP_PH_CONFIGURATION)
10790 /* Initiate UFS initialization, and waiting until completion */
10811 ufs_sysfs_add_nodes(hba->dev);
10818 hba->is_irq_enabled = false;
10829 if (hba->complete_put) {
10831 hba->complete_put = false;
10838 struct device *dev = &hba->ufs_device_wlun->sdev_gendev;
10844 spin_lock_irqsave(&dev->power.lock, flags);
10845 dev_pwr_mode = ufs_get_pm_lvl_to_dev_pwr_mode(hba->spm_lvl);
10846 link_state = ufs_get_pm_lvl_to_link_pwr_state(hba->spm_lvl);
10848 hba->curr_dev_pwr_mode == dev_pwr_mode &&
10849 hba->uic_link_state == link_state &&
10850 !hba->dev_info.b_rpm_dev_flush_capable;
10851 spin_unlock_irqrestore(&dev->power.lock, flags);
10862 * SCSI assumes that runtime-pm and system-pm for scsi drivers
10863 * are same. And it doesn't wake up the device for system-suspend
10864 * if it's runtime suspended. But ufs doesn't follow that.
10867 if (hba->ufs_device_wlun) {
10877 if (ret < 0 && ret != -EACCES) {
10882 hba->complete_put = true;
10898 struct ufs_hba *hba = shost_priv(sdev->host);
10910 return -ENODEV;
10912 blk_pm_runtime_init(sdev->request_queue, dev);
10940 * gcc compilers before version 10 cannot do constant-folding for
10941 * sub-byte bitfields. Hence skip the layout checks for gcc 9 and
10985 * ufs_dev_wlun_template - describes ufs device wlun
10986 * ufs-device wlun - used to send pm commands
10987 * All luns are consumers of ufs-device wlun.
10991 * With ufs design, SSU should be sent to ufs-device wlun.
10992 * Hence register a scsi driver for ufs wluns only.
11029 MODULE_DESCRIPTION("Generic UFS host controller driver Core");