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![Tomas Winkler](/assets/img/avatar_default.png)
ufshcd_dump_regs should use memcpy_fromio to read host registers instead of directly accessing using memcpy. The same function is utilized in ufs-qcom. Elminite compilation warning drivers/scsi/ufs/ufshcd.c:356:9: warning: incorrect type in argument 6 (different address spaces) drivers/scsi/ufs/ufshcd.c:356:9: expected void const *buf drivers/scsi/ufs/ufshcd.c:356:9: got void [noderef] <asn:2>*mmio_base Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
1049 lines
32 KiB
C
1049 lines
32 KiB
C
/*
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* Universal Flash Storage Host controller driver
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*
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* This code is based on drivers/scsi/ufs/ufshcd.h
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* Copyright (C) 2011-2013 Samsung India Software Operations
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* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
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*
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* Authors:
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* Santosh Yaraganavi <santosh.sy@samsung.com>
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* Vinayak Holikatti <h.vinayak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* See the COPYING file in the top-level directory or visit
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* This program is provided "AS IS" and "WITH ALL FAULTS" and
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* without warranty of any kind. You are solely responsible for
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* determining the appropriateness of using and distributing
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* the program and assume all risks associated with your exercise
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* of rights with respect to the program, including but not limited
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* to infringement of third party rights, the risks and costs of
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* program errors, damage to or loss of data, programs or equipment,
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* and unavailability or interruption of operations. Under no
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* circumstances will the contributor of this Program be liable for
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* any damages of any kind arising from your use or distribution of
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* this program.
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*/
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#ifndef _UFSHCD_H
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#define _UFSHCD_H
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/rwsem.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/wait.h>
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#include <linux/bitops.h>
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#include <linux/pm_runtime.h>
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#include <linux/clk.h>
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#include <linux/completion.h>
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#include <linux/regulator/consumer.h>
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#include "unipro.h"
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#include <asm/irq.h>
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#include <asm/byteorder.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_host.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_dbg.h>
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#include <scsi/scsi_eh.h>
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#include "ufs.h"
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#include "ufshci.h"
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#define UFSHCD "ufshcd"
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#define UFSHCD_DRIVER_VERSION "0.2"
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struct ufs_hba;
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enum dev_cmd_type {
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DEV_CMD_TYPE_NOP = 0x0,
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DEV_CMD_TYPE_QUERY = 0x1,
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};
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/**
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* struct uic_command - UIC command structure
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* @command: UIC command
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* @argument1: UIC command argument 1
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* @argument2: UIC command argument 2
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* @argument3: UIC command argument 3
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* @cmd_active: Indicate if UIC command is outstanding
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* @result: UIC command result
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* @done: UIC command completion
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*/
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struct uic_command {
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u32 command;
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u32 argument1;
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u32 argument2;
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u32 argument3;
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int cmd_active;
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int result;
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struct completion done;
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};
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/* Used to differentiate the power management options */
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enum ufs_pm_op {
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UFS_RUNTIME_PM,
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UFS_SYSTEM_PM,
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UFS_SHUTDOWN_PM,
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};
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#define ufshcd_is_runtime_pm(op) ((op) == UFS_RUNTIME_PM)
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#define ufshcd_is_system_pm(op) ((op) == UFS_SYSTEM_PM)
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#define ufshcd_is_shutdown_pm(op) ((op) == UFS_SHUTDOWN_PM)
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/* Host <-> Device UniPro Link state */
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enum uic_link_state {
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UIC_LINK_OFF_STATE = 0, /* Link powered down or disabled */
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UIC_LINK_ACTIVE_STATE = 1, /* Link is in Fast/Slow/Sleep state */
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UIC_LINK_HIBERN8_STATE = 2, /* Link is in Hibernate state */
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};
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#define ufshcd_is_link_off(hba) ((hba)->uic_link_state == UIC_LINK_OFF_STATE)
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#define ufshcd_is_link_active(hba) ((hba)->uic_link_state == \
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UIC_LINK_ACTIVE_STATE)
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#define ufshcd_is_link_hibern8(hba) ((hba)->uic_link_state == \
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UIC_LINK_HIBERN8_STATE)
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#define ufshcd_set_link_off(hba) ((hba)->uic_link_state = UIC_LINK_OFF_STATE)
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#define ufshcd_set_link_active(hba) ((hba)->uic_link_state = \
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UIC_LINK_ACTIVE_STATE)
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#define ufshcd_set_link_hibern8(hba) ((hba)->uic_link_state = \
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UIC_LINK_HIBERN8_STATE)
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/*
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* UFS Power management levels.
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* Each level is in increasing order of power savings.
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*/
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enum ufs_pm_level {
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UFS_PM_LVL_0, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_ACTIVE_STATE */
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UFS_PM_LVL_1, /* UFS_ACTIVE_PWR_MODE, UIC_LINK_HIBERN8_STATE */
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UFS_PM_LVL_2, /* UFS_SLEEP_PWR_MODE, UIC_LINK_ACTIVE_STATE */
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UFS_PM_LVL_3, /* UFS_SLEEP_PWR_MODE, UIC_LINK_HIBERN8_STATE */
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UFS_PM_LVL_4, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_HIBERN8_STATE */
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UFS_PM_LVL_5, /* UFS_POWERDOWN_PWR_MODE, UIC_LINK_OFF_STATE */
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UFS_PM_LVL_MAX
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};
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struct ufs_pm_lvl_states {
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enum ufs_dev_pwr_mode dev_state;
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enum uic_link_state link_state;
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};
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/**
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* struct ufshcd_lrb - local reference block
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* @utr_descriptor_ptr: UTRD address of the command
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* @ucd_req_ptr: UCD address of the command
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* @ucd_rsp_ptr: Response UPIU address for this command
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* @ucd_prdt_ptr: PRDT address of the command
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* @utrd_dma_addr: UTRD dma address for debug
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* @ucd_prdt_dma_addr: PRDT dma address for debug
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* @ucd_rsp_dma_addr: UPIU response dma address for debug
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* @ucd_req_dma_addr: UPIU request dma address for debug
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* @cmd: pointer to SCSI command
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* @sense_buffer: pointer to sense buffer address of the SCSI command
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* @sense_bufflen: Length of the sense buffer
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* @scsi_status: SCSI status of the command
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* @command_type: SCSI, UFS, Query.
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* @task_tag: Task tag of the command
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* @lun: LUN of the command
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* @intr_cmd: Interrupt command (doesn't participate in interrupt aggregation)
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* @issue_time_stamp: time stamp for debug purposes
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* @compl_time_stamp: time stamp for statistics
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* @req_abort_skip: skip request abort task flag
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*/
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struct ufshcd_lrb {
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struct utp_transfer_req_desc *utr_descriptor_ptr;
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struct utp_upiu_req *ucd_req_ptr;
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struct utp_upiu_rsp *ucd_rsp_ptr;
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struct ufshcd_sg_entry *ucd_prdt_ptr;
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dma_addr_t utrd_dma_addr;
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dma_addr_t ucd_req_dma_addr;
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dma_addr_t ucd_rsp_dma_addr;
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dma_addr_t ucd_prdt_dma_addr;
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struct scsi_cmnd *cmd;
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u8 *sense_buffer;
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unsigned int sense_bufflen;
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int scsi_status;
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int command_type;
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int task_tag;
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u8 lun; /* UPIU LUN id field is only 8-bit wide */
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bool intr_cmd;
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ktime_t issue_time_stamp;
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ktime_t compl_time_stamp;
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bool req_abort_skip;
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};
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/**
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* struct ufs_query - holds relevant data structures for query request
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* @request: request upiu and function
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* @descriptor: buffer for sending/receiving descriptor
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* @response: response upiu and response
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*/
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struct ufs_query {
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struct ufs_query_req request;
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u8 *descriptor;
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struct ufs_query_res response;
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};
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/**
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* struct ufs_dev_cmd - all assosiated fields with device management commands
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* @type: device management command type - Query, NOP OUT
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* @lock: lock to allow one command at a time
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* @complete: internal commands completion
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* @tag_wq: wait queue until free command slot is available
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*/
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struct ufs_dev_cmd {
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enum dev_cmd_type type;
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struct mutex lock;
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struct completion *complete;
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wait_queue_head_t tag_wq;
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struct ufs_query query;
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};
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struct ufs_desc_size {
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int dev_desc;
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int pwr_desc;
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int geom_desc;
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int interc_desc;
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int unit_desc;
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int conf_desc;
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int hlth_desc;
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};
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/**
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* struct ufs_clk_info - UFS clock related info
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* @list: list headed by hba->clk_list_head
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* @clk: clock node
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* @name: clock name
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* @max_freq: maximum frequency supported by the clock
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* @min_freq: min frequency that can be used for clock scaling
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* @curr_freq: indicates the current frequency that it is set to
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* @enabled: variable to check against multiple enable/disable
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*/
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struct ufs_clk_info {
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struct list_head list;
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struct clk *clk;
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const char *name;
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u32 max_freq;
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u32 min_freq;
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u32 curr_freq;
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bool enabled;
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};
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enum ufs_notify_change_status {
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PRE_CHANGE,
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POST_CHANGE,
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};
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struct ufs_pa_layer_attr {
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u32 gear_rx;
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u32 gear_tx;
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u32 lane_rx;
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u32 lane_tx;
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u32 pwr_rx;
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u32 pwr_tx;
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u32 hs_rate;
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};
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struct ufs_pwr_mode_info {
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bool is_valid;
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struct ufs_pa_layer_attr info;
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};
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/**
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* struct ufs_hba_variant_ops - variant specific callbacks
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* @name: variant name
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* @init: called when the driver is initialized
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* @exit: called to cleanup everything done in init
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* @get_ufs_hci_version: called to get UFS HCI version
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* @clk_scale_notify: notifies that clks are scaled up/down
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* @setup_clocks: called before touching any of the controller registers
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* @setup_regulators: called before accessing the host controller
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* @hce_enable_notify: called before and after HCE enable bit is set to allow
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* variant specific Uni-Pro initialization.
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* @link_startup_notify: called before and after Link startup is carried out
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* to allow variant specific Uni-Pro initialization.
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* @pwr_change_notify: called before and after a power mode change
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* is carried out to allow vendor spesific capabilities
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* to be set.
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* @setup_xfer_req: called before any transfer request is issued
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* to set some things
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* @setup_task_mgmt: called before any task management request is issued
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* to set some things
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* @hibern8_notify: called around hibern8 enter/exit
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* @apply_dev_quirks: called to apply device specific quirks
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* @suspend: called during host controller PM callback
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* @resume: called during host controller PM callback
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* @dbg_register_dump: used to dump controller debug information
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* @phy_initialization: used to initialize phys
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*/
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struct ufs_hba_variant_ops {
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const char *name;
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int (*init)(struct ufs_hba *);
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void (*exit)(struct ufs_hba *);
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u32 (*get_ufs_hci_version)(struct ufs_hba *);
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int (*clk_scale_notify)(struct ufs_hba *, bool,
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enum ufs_notify_change_status);
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int (*setup_clocks)(struct ufs_hba *, bool,
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enum ufs_notify_change_status);
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int (*setup_regulators)(struct ufs_hba *, bool);
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int (*hce_enable_notify)(struct ufs_hba *,
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enum ufs_notify_change_status);
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int (*link_startup_notify)(struct ufs_hba *,
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enum ufs_notify_change_status);
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int (*pwr_change_notify)(struct ufs_hba *,
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enum ufs_notify_change_status status,
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struct ufs_pa_layer_attr *,
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struct ufs_pa_layer_attr *);
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void (*setup_xfer_req)(struct ufs_hba *, int, bool);
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void (*setup_task_mgmt)(struct ufs_hba *, int, u8);
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void (*hibern8_notify)(struct ufs_hba *, enum uic_cmd_dme,
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enum ufs_notify_change_status);
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int (*apply_dev_quirks)(struct ufs_hba *);
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int (*suspend)(struct ufs_hba *, enum ufs_pm_op);
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int (*resume)(struct ufs_hba *, enum ufs_pm_op);
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void (*dbg_register_dump)(struct ufs_hba *hba);
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int (*phy_initialization)(struct ufs_hba *);
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};
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/* clock gating state */
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enum clk_gating_state {
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CLKS_OFF,
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CLKS_ON,
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REQ_CLKS_OFF,
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REQ_CLKS_ON,
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};
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/**
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* struct ufs_clk_gating - UFS clock gating related info
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* @gate_work: worker to turn off clocks after some delay as specified in
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* delay_ms
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* @ungate_work: worker to turn on clocks that will be used in case of
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* interrupt context
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* @state: the current clocks state
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* @delay_ms: gating delay in ms
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* @is_suspended: clk gating is suspended when set to 1 which can be used
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* during suspend/resume
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* @delay_attr: sysfs attribute to control delay_attr
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* @enable_attr: sysfs attribute to enable/disable clock gating
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* @is_enabled: Indicates the current status of clock gating
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* @active_reqs: number of requests that are pending and should be waited for
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* completion before gating clocks.
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*/
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struct ufs_clk_gating {
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struct delayed_work gate_work;
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struct work_struct ungate_work;
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enum clk_gating_state state;
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unsigned long delay_ms;
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bool is_suspended;
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struct device_attribute delay_attr;
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struct device_attribute enable_attr;
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bool is_enabled;
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int active_reqs;
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struct workqueue_struct *clk_gating_workq;
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};
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struct ufs_saved_pwr_info {
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struct ufs_pa_layer_attr info;
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bool is_valid;
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};
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/**
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* struct ufs_clk_scaling - UFS clock scaling related data
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* @active_reqs: number of requests that are pending. If this is zero when
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* devfreq ->target() function is called then schedule "suspend_work" to
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* suspend devfreq.
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* @tot_busy_t: Total busy time in current polling window
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* @window_start_t: Start time (in jiffies) of the current polling window
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* @busy_start_t: Start time of current busy period
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* @enable_attr: sysfs attribute to enable/disable clock scaling
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* @saved_pwr_info: UFS power mode may also be changed during scaling and this
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* one keeps track of previous power mode.
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* @workq: workqueue to schedule devfreq suspend/resume work
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* @suspend_work: worker to suspend devfreq
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* @resume_work: worker to resume devfreq
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* @is_allowed: tracks if scaling is currently allowed or not
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* @is_busy_started: tracks if busy period has started or not
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* @is_suspended: tracks if devfreq is suspended or not
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*/
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struct ufs_clk_scaling {
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int active_reqs;
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unsigned long tot_busy_t;
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unsigned long window_start_t;
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ktime_t busy_start_t;
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struct device_attribute enable_attr;
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struct ufs_saved_pwr_info saved_pwr_info;
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struct workqueue_struct *workq;
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struct work_struct suspend_work;
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struct work_struct resume_work;
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bool is_allowed;
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bool is_busy_started;
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bool is_suspended;
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};
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/**
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* struct ufs_init_prefetch - contains data that is pre-fetched once during
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* initialization
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* @icc_level: icc level which was read during initialization
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*/
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struct ufs_init_prefetch {
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u32 icc_level;
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};
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#define UIC_ERR_REG_HIST_LENGTH 8
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/**
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* struct ufs_uic_err_reg_hist - keeps history of uic errors
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* @pos: index to indicate cyclic buffer position
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* @reg: cyclic buffer for registers value
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* @tstamp: cyclic buffer for time stamp
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*/
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struct ufs_uic_err_reg_hist {
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int pos;
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u32 reg[UIC_ERR_REG_HIST_LENGTH];
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ktime_t tstamp[UIC_ERR_REG_HIST_LENGTH];
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};
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/**
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* struct ufs_stats - keeps usage/err statistics
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* @hibern8_exit_cnt: Counter to keep track of number of exits,
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* reset this after link-startup.
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* @last_hibern8_exit_tstamp: Set time after the hibern8 exit.
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* Clear after the first successful command completion.
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* @pa_err: tracks pa-uic errors
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* @dl_err: tracks dl-uic errors
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* @nl_err: tracks nl-uic errors
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* @tl_err: tracks tl-uic errors
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* @dme_err: tracks dme errors
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*/
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struct ufs_stats {
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u32 hibern8_exit_cnt;
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ktime_t last_hibern8_exit_tstamp;
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struct ufs_uic_err_reg_hist pa_err;
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struct ufs_uic_err_reg_hist dl_err;
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struct ufs_uic_err_reg_hist nl_err;
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|
struct ufs_uic_err_reg_hist tl_err;
|
|
struct ufs_uic_err_reg_hist dme_err;
|
|
};
|
|
|
|
/**
|
|
* struct ufs_hba - per adapter private structure
|
|
* @mmio_base: UFSHCI base register address
|
|
* @ucdl_base_addr: UFS Command Descriptor base address
|
|
* @utrdl_base_addr: UTP Transfer Request Descriptor base address
|
|
* @utmrdl_base_addr: UTP Task Management Descriptor base address
|
|
* @ucdl_dma_addr: UFS Command Descriptor DMA address
|
|
* @utrdl_dma_addr: UTRDL DMA address
|
|
* @utmrdl_dma_addr: UTMRDL DMA address
|
|
* @host: Scsi_Host instance of the driver
|
|
* @dev: device handle
|
|
* @lrb: local reference block
|
|
* @lrb_in_use: lrb in use
|
|
* @outstanding_tasks: Bits representing outstanding task requests
|
|
* @outstanding_reqs: Bits representing outstanding transfer requests
|
|
* @capabilities: UFS Controller Capabilities
|
|
* @nutrs: Transfer Request Queue depth supported by controller
|
|
* @nutmrs: Task Management Queue depth supported by controller
|
|
* @ufs_version: UFS Version to which controller complies
|
|
* @vops: pointer to variant specific operations
|
|
* @priv: pointer to variant specific private data
|
|
* @irq: Irq number of the controller
|
|
* @active_uic_cmd: handle of active UIC command
|
|
* @uic_cmd_mutex: mutex for uic command
|
|
* @tm_wq: wait queue for task management
|
|
* @tm_tag_wq: wait queue for free task management slots
|
|
* @tm_slots_in_use: bit map of task management request slots in use
|
|
* @pwr_done: completion for power mode change
|
|
* @tm_condition: condition variable for task management
|
|
* @ufshcd_state: UFSHCD states
|
|
* @eh_flags: Error handling flags
|
|
* @intr_mask: Interrupt Mask Bits
|
|
* @ee_ctrl_mask: Exception event control mask
|
|
* @is_powered: flag to check if HBA is powered
|
|
* @is_init_prefetch: flag to check if data was pre-fetched in initialization
|
|
* @init_prefetch_data: data pre-fetched during initialization
|
|
* @eh_work: Worker to handle UFS errors that require s/w attention
|
|
* @eeh_work: Worker to handle exception events
|
|
* @errors: HBA errors
|
|
* @uic_error: UFS interconnect layer error status
|
|
* @saved_err: sticky error mask
|
|
* @saved_uic_err: sticky UIC error mask
|
|
* @dev_cmd: ufs device management command information
|
|
* @last_dme_cmd_tstamp: time stamp of the last completed DME command
|
|
* @auto_bkops_enabled: to track whether bkops is enabled in device
|
|
* @vreg_info: UFS device voltage regulator information
|
|
* @clk_list_head: UFS host controller clocks list node head
|
|
* @pwr_info: holds current power mode
|
|
* @max_pwr_info: keeps the device max valid pwm
|
|
* @desc_size: descriptor sizes reported by device
|
|
* @urgent_bkops_lvl: keeps track of urgent bkops level for device
|
|
* @is_urgent_bkops_lvl_checked: keeps track if the urgent bkops level for
|
|
* device is known or not.
|
|
* @scsi_block_reqs_cnt: reference counting for scsi block requests
|
|
*/
|
|
struct ufs_hba {
|
|
void __iomem *mmio_base;
|
|
|
|
/* Virtual memory reference */
|
|
struct utp_transfer_cmd_desc *ucdl_base_addr;
|
|
struct utp_transfer_req_desc *utrdl_base_addr;
|
|
struct utp_task_req_desc *utmrdl_base_addr;
|
|
|
|
/* DMA memory reference */
|
|
dma_addr_t ucdl_dma_addr;
|
|
dma_addr_t utrdl_dma_addr;
|
|
dma_addr_t utmrdl_dma_addr;
|
|
|
|
struct Scsi_Host *host;
|
|
struct device *dev;
|
|
/*
|
|
* This field is to keep a reference to "scsi_device" corresponding to
|
|
* "UFS device" W-LU.
|
|
*/
|
|
struct scsi_device *sdev_ufs_device;
|
|
|
|
enum ufs_dev_pwr_mode curr_dev_pwr_mode;
|
|
enum uic_link_state uic_link_state;
|
|
/* Desired UFS power management level during runtime PM */
|
|
enum ufs_pm_level rpm_lvl;
|
|
/* Desired UFS power management level during system PM */
|
|
enum ufs_pm_level spm_lvl;
|
|
struct device_attribute rpm_lvl_attr;
|
|
struct device_attribute spm_lvl_attr;
|
|
int pm_op_in_progress;
|
|
|
|
/* Auto-Hibernate Idle Timer register value */
|
|
u32 ahit;
|
|
|
|
struct ufshcd_lrb *lrb;
|
|
unsigned long lrb_in_use;
|
|
|
|
unsigned long outstanding_tasks;
|
|
unsigned long outstanding_reqs;
|
|
|
|
u32 capabilities;
|
|
int nutrs;
|
|
int nutmrs;
|
|
u32 ufs_version;
|
|
struct ufs_hba_variant_ops *vops;
|
|
void *priv;
|
|
unsigned int irq;
|
|
bool is_irq_enabled;
|
|
|
|
/* Interrupt aggregation support is broken */
|
|
#define UFSHCD_QUIRK_BROKEN_INTR_AGGR 0x1
|
|
|
|
/*
|
|
* delay before each dme command is required as the unipro
|
|
* layer has shown instabilities
|
|
*/
|
|
#define UFSHCD_QUIRK_DELAY_BEFORE_DME_CMDS 0x2
|
|
|
|
/*
|
|
* If UFS host controller is having issue in processing LCC (Line
|
|
* Control Command) coming from device then enable this quirk.
|
|
* When this quirk is enabled, host controller driver should disable
|
|
* the LCC transmission on UFS device (by clearing TX_LCC_ENABLE
|
|
* attribute of device to 0).
|
|
*/
|
|
#define UFSHCD_QUIRK_BROKEN_LCC 0x4
|
|
|
|
/*
|
|
* The attribute PA_RXHSUNTERMCAP specifies whether or not the
|
|
* inbound Link supports unterminated line in HS mode. Setting this
|
|
* attribute to 1 fixes moving to HS gear.
|
|
*/
|
|
#define UFSHCD_QUIRK_BROKEN_PA_RXHSUNTERMCAP 0x8
|
|
|
|
/*
|
|
* This quirk needs to be enabled if the host contoller only allows
|
|
* accessing the peer dme attributes in AUTO mode (FAST AUTO or
|
|
* SLOW AUTO).
|
|
*/
|
|
#define UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE 0x10
|
|
|
|
/*
|
|
* This quirk needs to be enabled if the host contoller doesn't
|
|
* advertise the correct version in UFS_VER register. If this quirk
|
|
* is enabled, standard UFS host driver will call the vendor specific
|
|
* ops (get_ufs_hci_version) to get the correct version.
|
|
*/
|
|
#define UFSHCD_QUIRK_BROKEN_UFS_HCI_VERSION 0x20
|
|
|
|
/*
|
|
* This quirk needs to be enabled if the host contoller regards
|
|
* resolution of the values of PRDTO and PRDTL in UTRD as byte.
|
|
*/
|
|
#define UFSHCD_QUIRK_PRDT_BYTE_GRAN 0x80
|
|
|
|
/*
|
|
* Clear handling for transfer/task request list is just opposite.
|
|
*/
|
|
#define UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR 0x100
|
|
|
|
/*
|
|
* This quirk needs to be enabled if host controller doesn't allow
|
|
* that the interrupt aggregation timer and counter are reset by s/w.
|
|
*/
|
|
#define UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR 0x200
|
|
|
|
/*
|
|
* This quirks needs to be enabled if host controller cannot be
|
|
* enabled via HCE register.
|
|
*/
|
|
#define UFSHCI_QUIRK_BROKEN_HCE 0x400
|
|
unsigned int quirks; /* Deviations from standard UFSHCI spec. */
|
|
|
|
/* Device deviations from standard UFS device spec. */
|
|
unsigned int dev_quirks;
|
|
|
|
wait_queue_head_t tm_wq;
|
|
wait_queue_head_t tm_tag_wq;
|
|
unsigned long tm_condition;
|
|
unsigned long tm_slots_in_use;
|
|
|
|
struct uic_command *active_uic_cmd;
|
|
struct mutex uic_cmd_mutex;
|
|
struct completion *uic_async_done;
|
|
|
|
u32 ufshcd_state;
|
|
u32 eh_flags;
|
|
u32 intr_mask;
|
|
u16 ee_ctrl_mask;
|
|
bool is_powered;
|
|
bool is_init_prefetch;
|
|
struct ufs_init_prefetch init_prefetch_data;
|
|
|
|
/* Work Queues */
|
|
struct work_struct eh_work;
|
|
struct work_struct eeh_work;
|
|
|
|
/* HBA Errors */
|
|
u32 errors;
|
|
u32 uic_error;
|
|
u32 saved_err;
|
|
u32 saved_uic_err;
|
|
struct ufs_stats ufs_stats;
|
|
|
|
/* Device management request data */
|
|
struct ufs_dev_cmd dev_cmd;
|
|
ktime_t last_dme_cmd_tstamp;
|
|
|
|
/* Keeps information of the UFS device connected to this host */
|
|
struct ufs_dev_info dev_info;
|
|
bool auto_bkops_enabled;
|
|
struct ufs_vreg_info vreg_info;
|
|
struct list_head clk_list_head;
|
|
|
|
bool wlun_dev_clr_ua;
|
|
|
|
/* Number of requests aborts */
|
|
int req_abort_count;
|
|
|
|
/* Number of lanes available (1 or 2) for Rx/Tx */
|
|
u32 lanes_per_direction;
|
|
struct ufs_pa_layer_attr pwr_info;
|
|
struct ufs_pwr_mode_info max_pwr_info;
|
|
|
|
struct ufs_clk_gating clk_gating;
|
|
/* Control to enable/disable host capabilities */
|
|
u32 caps;
|
|
/* Allow dynamic clk gating */
|
|
#define UFSHCD_CAP_CLK_GATING (1 << 0)
|
|
/* Allow hiberb8 with clk gating */
|
|
#define UFSHCD_CAP_HIBERN8_WITH_CLK_GATING (1 << 1)
|
|
/* Allow dynamic clk scaling */
|
|
#define UFSHCD_CAP_CLK_SCALING (1 << 2)
|
|
/* Allow auto bkops to enabled during runtime suspend */
|
|
#define UFSHCD_CAP_AUTO_BKOPS_SUSPEND (1 << 3)
|
|
/*
|
|
* This capability allows host controller driver to use the UFS HCI's
|
|
* interrupt aggregation capability.
|
|
* CAUTION: Enabling this might reduce overall UFS throughput.
|
|
*/
|
|
#define UFSHCD_CAP_INTR_AGGR (1 << 4)
|
|
/*
|
|
* This capability allows the device auto-bkops to be always enabled
|
|
* except during suspend (both runtime and suspend).
|
|
* Enabling this capability means that device will always be allowed
|
|
* to do background operation when it's active but it might degrade
|
|
* the performance of ongoing read/write operations.
|
|
*/
|
|
#define UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND (1 << 5)
|
|
|
|
struct devfreq *devfreq;
|
|
struct ufs_clk_scaling clk_scaling;
|
|
bool is_sys_suspended;
|
|
|
|
enum bkops_status urgent_bkops_lvl;
|
|
bool is_urgent_bkops_lvl_checked;
|
|
|
|
struct rw_semaphore clk_scaling_lock;
|
|
struct ufs_desc_size desc_size;
|
|
atomic_t scsi_block_reqs_cnt;
|
|
};
|
|
|
|
/* Returns true if clocks can be gated. Otherwise false */
|
|
static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba)
|
|
{
|
|
return hba->caps & UFSHCD_CAP_CLK_GATING;
|
|
}
|
|
static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba)
|
|
{
|
|
return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING;
|
|
}
|
|
static inline int ufshcd_is_clkscaling_supported(struct ufs_hba *hba)
|
|
{
|
|
return hba->caps & UFSHCD_CAP_CLK_SCALING;
|
|
}
|
|
static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba)
|
|
{
|
|
return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND;
|
|
}
|
|
|
|
static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba)
|
|
{
|
|
/* DWC UFS Core has the Interrupt aggregation feature but is not detectable*/
|
|
#ifndef CONFIG_SCSI_UFS_DWC
|
|
if ((hba->caps & UFSHCD_CAP_INTR_AGGR) &&
|
|
!(hba->quirks & UFSHCD_QUIRK_BROKEN_INTR_AGGR))
|
|
return true;
|
|
else
|
|
return false;
|
|
#else
|
|
return true;
|
|
#endif
|
|
}
|
|
|
|
#define ufshcd_writel(hba, val, reg) \
|
|
writel((val), (hba)->mmio_base + (reg))
|
|
#define ufshcd_readl(hba, reg) \
|
|
readl((hba)->mmio_base + (reg))
|
|
|
|
/**
|
|
* ufshcd_rmwl - read modify write into a register
|
|
* @hba - per adapter instance
|
|
* @mask - mask to apply on read value
|
|
* @val - actual value to write
|
|
* @reg - register address
|
|
*/
|
|
static inline void ufshcd_rmwl(struct ufs_hba *hba, u32 mask, u32 val, u32 reg)
|
|
{
|
|
u32 tmp;
|
|
|
|
tmp = ufshcd_readl(hba, reg);
|
|
tmp &= ~mask;
|
|
tmp |= (val & mask);
|
|
ufshcd_writel(hba, tmp, reg);
|
|
}
|
|
|
|
int ufshcd_alloc_host(struct device *, struct ufs_hba **);
|
|
void ufshcd_dealloc_host(struct ufs_hba *);
|
|
int ufshcd_init(struct ufs_hba * , void __iomem * , unsigned int);
|
|
void ufshcd_remove(struct ufs_hba *);
|
|
int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask,
|
|
u32 val, unsigned long interval_us,
|
|
unsigned long timeout_ms, bool can_sleep);
|
|
|
|
static inline void check_upiu_size(void)
|
|
{
|
|
BUILD_BUG_ON(ALIGNED_UPIU_SIZE <
|
|
GENERAL_UPIU_REQUEST_SIZE + QUERY_DESC_MAX_SIZE);
|
|
}
|
|
|
|
/**
|
|
* ufshcd_set_variant - set variant specific data to the hba
|
|
* @hba - per adapter instance
|
|
* @variant - pointer to variant specific data
|
|
*/
|
|
static inline void ufshcd_set_variant(struct ufs_hba *hba, void *variant)
|
|
{
|
|
BUG_ON(!hba);
|
|
hba->priv = variant;
|
|
}
|
|
|
|
/**
|
|
* ufshcd_get_variant - get variant specific data from the hba
|
|
* @hba - per adapter instance
|
|
*/
|
|
static inline void *ufshcd_get_variant(struct ufs_hba *hba)
|
|
{
|
|
BUG_ON(!hba);
|
|
return hba->priv;
|
|
}
|
|
static inline bool ufshcd_keep_autobkops_enabled_except_suspend(
|
|
struct ufs_hba *hba)
|
|
{
|
|
return hba->caps & UFSHCD_CAP_KEEP_AUTO_BKOPS_ENABLED_EXCEPT_SUSPEND;
|
|
}
|
|
|
|
extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
|
|
extern int ufshcd_runtime_resume(struct ufs_hba *hba);
|
|
extern int ufshcd_runtime_idle(struct ufs_hba *hba);
|
|
extern int ufshcd_system_suspend(struct ufs_hba *hba);
|
|
extern int ufshcd_system_resume(struct ufs_hba *hba);
|
|
extern int ufshcd_shutdown(struct ufs_hba *hba);
|
|
extern int ufshcd_dme_set_attr(struct ufs_hba *hba, u32 attr_sel,
|
|
u8 attr_set, u32 mib_val, u8 peer);
|
|
extern int ufshcd_dme_get_attr(struct ufs_hba *hba, u32 attr_sel,
|
|
u32 *mib_val, u8 peer);
|
|
extern int ufshcd_config_pwr_mode(struct ufs_hba *hba,
|
|
struct ufs_pa_layer_attr *desired_pwr_mode);
|
|
|
|
/* UIC command interfaces for DME primitives */
|
|
#define DME_LOCAL 0
|
|
#define DME_PEER 1
|
|
#define ATTR_SET_NOR 0 /* NORMAL */
|
|
#define ATTR_SET_ST 1 /* STATIC */
|
|
|
|
static inline int ufshcd_dme_set(struct ufs_hba *hba, u32 attr_sel,
|
|
u32 mib_val)
|
|
{
|
|
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
|
|
mib_val, DME_LOCAL);
|
|
}
|
|
|
|
static inline int ufshcd_dme_st_set(struct ufs_hba *hba, u32 attr_sel,
|
|
u32 mib_val)
|
|
{
|
|
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
|
|
mib_val, DME_LOCAL);
|
|
}
|
|
|
|
static inline int ufshcd_dme_peer_set(struct ufs_hba *hba, u32 attr_sel,
|
|
u32 mib_val)
|
|
{
|
|
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_NOR,
|
|
mib_val, DME_PEER);
|
|
}
|
|
|
|
static inline int ufshcd_dme_peer_st_set(struct ufs_hba *hba, u32 attr_sel,
|
|
u32 mib_val)
|
|
{
|
|
return ufshcd_dme_set_attr(hba, attr_sel, ATTR_SET_ST,
|
|
mib_val, DME_PEER);
|
|
}
|
|
|
|
static inline int ufshcd_dme_get(struct ufs_hba *hba,
|
|
u32 attr_sel, u32 *mib_val)
|
|
{
|
|
return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_LOCAL);
|
|
}
|
|
|
|
static inline int ufshcd_dme_peer_get(struct ufs_hba *hba,
|
|
u32 attr_sel, u32 *mib_val)
|
|
{
|
|
return ufshcd_dme_get_attr(hba, attr_sel, mib_val, DME_PEER);
|
|
}
|
|
|
|
static inline bool ufshcd_is_hs_mode(struct ufs_pa_layer_attr *pwr_info)
|
|
{
|
|
return (pwr_info->pwr_rx == FAST_MODE ||
|
|
pwr_info->pwr_rx == FASTAUTO_MODE) &&
|
|
(pwr_info->pwr_tx == FAST_MODE ||
|
|
pwr_info->pwr_tx == FASTAUTO_MODE);
|
|
}
|
|
|
|
/* Expose Query-Request API */
|
|
int ufshcd_query_descriptor_retry(struct ufs_hba *hba,
|
|
enum query_opcode opcode,
|
|
enum desc_idn idn, u8 index,
|
|
u8 selector,
|
|
u8 *desc_buf, int *buf_len);
|
|
int ufshcd_read_desc_param(struct ufs_hba *hba,
|
|
enum desc_idn desc_id,
|
|
int desc_index,
|
|
u8 param_offset,
|
|
u8 *param_read_buf,
|
|
u8 param_size);
|
|
int ufshcd_query_attr(struct ufs_hba *hba, enum query_opcode opcode,
|
|
enum attr_idn idn, u8 index, u8 selector, u32 *attr_val);
|
|
int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode,
|
|
enum flag_idn idn, bool *flag_res);
|
|
int ufshcd_read_string_desc(struct ufs_hba *hba, int desc_index,
|
|
u8 *buf, u32 size, bool ascii);
|
|
|
|
int ufshcd_hold(struct ufs_hba *hba, bool async);
|
|
void ufshcd_release(struct ufs_hba *hba);
|
|
|
|
int ufshcd_map_desc_id_to_length(struct ufs_hba *hba, enum desc_idn desc_id,
|
|
int *desc_length);
|
|
|
|
u32 ufshcd_get_local_unipro_ver(struct ufs_hba *hba);
|
|
|
|
/* Wrapper functions for safely calling variant operations */
|
|
static inline const char *ufshcd_get_var_name(struct ufs_hba *hba)
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|
{
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if (hba->vops)
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return hba->vops->name;
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return "";
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}
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|
|
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static inline int ufshcd_vops_init(struct ufs_hba *hba)
|
|
{
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if (hba->vops && hba->vops->init)
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return hba->vops->init(hba);
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|
|
|
return 0;
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|
}
|
|
|
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static inline void ufshcd_vops_exit(struct ufs_hba *hba)
|
|
{
|
|
if (hba->vops && hba->vops->exit)
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return hba->vops->exit(hba);
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|
}
|
|
|
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static inline u32 ufshcd_vops_get_ufs_hci_version(struct ufs_hba *hba)
|
|
{
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|
if (hba->vops && hba->vops->get_ufs_hci_version)
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|
return hba->vops->get_ufs_hci_version(hba);
|
|
|
|
return ufshcd_readl(hba, REG_UFS_VERSION);
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|
}
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|
|
|
static inline int ufshcd_vops_clk_scale_notify(struct ufs_hba *hba,
|
|
bool up, enum ufs_notify_change_status status)
|
|
{
|
|
if (hba->vops && hba->vops->clk_scale_notify)
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|
return hba->vops->clk_scale_notify(hba, up, status);
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_setup_clocks(struct ufs_hba *hba, bool on,
|
|
enum ufs_notify_change_status status)
|
|
{
|
|
if (hba->vops && hba->vops->setup_clocks)
|
|
return hba->vops->setup_clocks(hba, on, status);
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_setup_regulators(struct ufs_hba *hba, bool status)
|
|
{
|
|
if (hba->vops && hba->vops->setup_regulators)
|
|
return hba->vops->setup_regulators(hba, status);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_hce_enable_notify(struct ufs_hba *hba,
|
|
bool status)
|
|
{
|
|
if (hba->vops && hba->vops->hce_enable_notify)
|
|
return hba->vops->hce_enable_notify(hba, status);
|
|
|
|
return 0;
|
|
}
|
|
static inline int ufshcd_vops_link_startup_notify(struct ufs_hba *hba,
|
|
bool status)
|
|
{
|
|
if (hba->vops && hba->vops->link_startup_notify)
|
|
return hba->vops->link_startup_notify(hba, status);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_pwr_change_notify(struct ufs_hba *hba,
|
|
bool status,
|
|
struct ufs_pa_layer_attr *dev_max_params,
|
|
struct ufs_pa_layer_attr *dev_req_params)
|
|
{
|
|
if (hba->vops && hba->vops->pwr_change_notify)
|
|
return hba->vops->pwr_change_notify(hba, status,
|
|
dev_max_params, dev_req_params);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void ufshcd_vops_setup_xfer_req(struct ufs_hba *hba, int tag,
|
|
bool is_scsi_cmd)
|
|
{
|
|
if (hba->vops && hba->vops->setup_xfer_req)
|
|
return hba->vops->setup_xfer_req(hba, tag, is_scsi_cmd);
|
|
}
|
|
|
|
static inline void ufshcd_vops_setup_task_mgmt(struct ufs_hba *hba,
|
|
int tag, u8 tm_function)
|
|
{
|
|
if (hba->vops && hba->vops->setup_task_mgmt)
|
|
return hba->vops->setup_task_mgmt(hba, tag, tm_function);
|
|
}
|
|
|
|
static inline void ufshcd_vops_hibern8_notify(struct ufs_hba *hba,
|
|
enum uic_cmd_dme cmd,
|
|
enum ufs_notify_change_status status)
|
|
{
|
|
if (hba->vops && hba->vops->hibern8_notify)
|
|
return hba->vops->hibern8_notify(hba, cmd, status);
|
|
}
|
|
|
|
static inline int ufshcd_vops_apply_dev_quirks(struct ufs_hba *hba)
|
|
{
|
|
if (hba->vops && hba->vops->apply_dev_quirks)
|
|
return hba->vops->apply_dev_quirks(hba);
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_suspend(struct ufs_hba *hba, enum ufs_pm_op op)
|
|
{
|
|
if (hba->vops && hba->vops->suspend)
|
|
return hba->vops->suspend(hba, op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int ufshcd_vops_resume(struct ufs_hba *hba, enum ufs_pm_op op)
|
|
{
|
|
if (hba->vops && hba->vops->resume)
|
|
return hba->vops->resume(hba, op);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline void ufshcd_vops_dbg_register_dump(struct ufs_hba *hba)
|
|
{
|
|
if (hba->vops && hba->vops->dbg_register_dump)
|
|
hba->vops->dbg_register_dump(hba);
|
|
}
|
|
|
|
extern struct ufs_pm_lvl_states ufs_pm_lvl_states[];
|
|
|
|
/*
|
|
* ufshcd_scsi_to_upiu_lun - maps scsi LUN to UPIU LUN
|
|
* @scsi_lun: scsi LUN id
|
|
*
|
|
* Returns UPIU LUN id
|
|
*/
|
|
static inline u8 ufshcd_scsi_to_upiu_lun(unsigned int scsi_lun)
|
|
{
|
|
if (scsi_is_wlun(scsi_lun))
|
|
return (scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID)
|
|
| UFS_UPIU_WLUN_ID;
|
|
else
|
|
return scsi_lun & UFS_UPIU_MAX_UNIT_NUM_ID;
|
|
}
|
|
|
|
int ufshcd_dump_regs(struct ufs_hba *hba, size_t offset, size_t len,
|
|
const char *prefix);
|
|
|
|
#endif /* End of Header */
|