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Message-id: <561F18C5.10406@samsung.com>
Date: Thu, 15 Oct 2015 08:38:53 +0530
From: Alim Akhtar <alim.akhtar@...sung.com>
To: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: JBottomley@...n.com, vinholikatti@...il.com,
amit.daniel@...sung.com, essuuj@...il.com,
devicetree@...r.kernel.org, arnd@...db.de,
Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH v4 11/11] scsi: ufs-exynos: add UFS host support for Exynos
SoCs
+CCing kishon Vijay,
On 10/14/2015 06:25 PM, Alim Akhtar wrote:
> From: Seungwon Jeon <essuuj@...il.com>
>
> This patch introduces Exynos UFS host controller driver,
> which mainly handles vendor-specific operations including
> link startup, power mode change and hibernation/unhibernation.
>
> Signed-off-by: Seungwon Jeon <essuuj@...il.com>
> Signed-off-by: Alim Akhtar <alim.akhtar@...sung.com>
> ---
> drivers/scsi/ufs/Kconfig | 12 +
> drivers/scsi/ufs/Makefile | 1 +
> drivers/scsi/ufs/ufs-exynos-hw.c | 131 ++++
> drivers/scsi/ufs/ufs-exynos-hw.h | 43 ++
> drivers/scsi/ufs/ufs-exynos.c | 1317 ++++++++++++++++++++++++++++++++++++++
> drivers/scsi/ufs/ufs-exynos.h | 247 +++++++
> drivers/scsi/ufs/ufshci.h | 26 +-
> drivers/scsi/ufs/unipro.h | 47 ++
> 8 files changed, 1823 insertions(+), 1 deletion(-)
> create mode 100644 drivers/scsi/ufs/ufs-exynos-hw.c
> create mode 100644 drivers/scsi/ufs/ufs-exynos-hw.h
> create mode 100644 drivers/scsi/ufs/ufs-exynos.c
> create mode 100644 drivers/scsi/ufs/ufs-exynos.h
>
> diff --git a/drivers/scsi/ufs/Kconfig b/drivers/scsi/ufs/Kconfig
> index 5f4530744e0a..bc602be94458 100644
> --- a/drivers/scsi/ufs/Kconfig
> +++ b/drivers/scsi/ufs/Kconfig
> @@ -83,3 +83,15 @@ config SCSI_UFS_QCOM
>
> Select this if you have UFS controller on QCOM chipset.
> If unsure, say N.
> +
> +config SCSI_UFS_EXYNOS
> + bool "EXYNOS specific hooks to UFS controller platform driver"
> + depends on SCSI_UFSHCD_PLATFORM && ARCH_EXYNOS || COMPILE_TEST
> + select PHY_EXYNOS_UFS
> + help
> + This selects the EXYNOS specific additions to UFSHCD platform driver.
> + UFS host on EXYNOS includes HCI and UNIPRO layer, and associates with
> + UFS-PHY driver.
> +
> + Select this if you have UFS host controller on EXYNOS chipset.
> + If unsure, say N.
> diff --git a/drivers/scsi/ufs/Makefile b/drivers/scsi/ufs/Makefile
> index 8303bcce7a23..2accf1e628b3 100644
> --- a/drivers/scsi/ufs/Makefile
> +++ b/drivers/scsi/ufs/Makefile
> @@ -1,5 +1,6 @@
> # UFSHCD makefile
> obj-$(CONFIG_SCSI_UFS_QCOM) += ufs-qcom.o
> +obj-$(CONFIG_SCSI_UFS_EXYNOS) += ufs-exynos.o ufs-exynos-hw.o
> obj-$(CONFIG_SCSI_UFSHCD) += ufshcd.o
> obj-$(CONFIG_SCSI_UFSHCD_PCI) += ufshcd-pci.o
> obj-$(CONFIG_SCSI_UFSHCD_PLATFORM) += ufshcd-pltfrm.o
> diff --git a/drivers/scsi/ufs/ufs-exynos-hw.c b/drivers/scsi/ufs/ufs-exynos-hw.c
> new file mode 100644
> index 000000000000..be6c61541a8f
> --- /dev/null
> +++ b/drivers/scsi/ufs/ufs-exynos-hw.c
> @@ -0,0 +1,131 @@
> +/*
> + * UFS Host Controller driver for Exynos specific extensions
> + *
> + * Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
> + * Author: Seungwon Jeon <essuuj@...il.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include "ufshcd.h"
> +#include "unipro.h"
> +
> +#include "ufs-exynos.h"
> +#include "ufs-exynos-hw.h"
> +
> +static int exynos7_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
> +{
> + struct clk *child, *parent;
> +
> + child = devm_clk_get(dev, "ref_clk");
> + if (IS_ERR(child)) {
> + dev_err(dev, "failed to get ref_clk clock\n");
> + return -EINVAL;
> + }
> +
> + parent = devm_clk_get(dev, "ref_clk_parent");
> + if (IS_ERR(parent)) {
> + dev_err(dev, "failed to get ref_clk_parent clock\n");
> + return -EINVAL;
> + }
> + return clk_set_parent(child, parent);
> +}
> +
> +static int exynos7_ufs_pre_link(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + u32 val = ufs->drv_data->uic_attr->pa_dbg_option_suite;
> + int i;
> +
> + exynos_ufs_enable_ov_tm(hba);
> + for_each_ufs_tx_lane(ufs, i)
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x297, i), 0x17);
> + for_each_ufs_rx_lane(ufs, i) {
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x362, i), 0xff);
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x363, i), 0x00);
> + }
> + exynos_ufs_disable_ov_tm(hba);
> +
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE_DYN), 0xf);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE_DYN), 0xf);
> + for_each_ufs_tx_lane(ufs, i)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(TX_HIBERN8_CONTROL, i), 0x0);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_TXPHY_CFGUPDT), 0x1);
> + udelay(1);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val | (1 << 12));
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_RESET_PHY), 0x1);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_LINE_RESET), 0x1);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_LINE_RESET_REQ), 0x1);
> + udelay(1600);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val);
> +
> + return 0;
> +}
> +
> +static int exynos7_ufs_post_link(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + int i;
> +
> + exynos_ufs_enable_ov_tm(hba);
> + for_each_ufs_tx_lane(ufs, i) {
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x28b, i), 0x83);
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x29a, i), 0x07);
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x277, i),
> + TX_LINERESET_N(exynos_ufs_calc_time_cntr(ufs, 200000)));
> + }
> + exynos_ufs_disable_ov_tm(hba);
> +
> + exynos_ufs_enable_dbg_mode(hba);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_SAVECONFIGTIME), 0xbb8);
> + exynos_ufs_disable_dbg_mode(hba);
> +
> + return 0;
> +}
> +
> +static int exynos7_ufs_pre_pwr_change(struct exynos_ufs *ufs,
> + struct uic_pwr_mode *pwr)
> +{
> + unipro_writel(ufs, 0x22, UNIPRO_DBG_FORCE_DME_CTRL_STATE);
> +
> + return 0;
> +}
> +
> +static int exynos7_ufs_post_pwr_change(struct exynos_ufs *ufs,
> + struct uic_pwr_mode *pwr)
> +{
> + struct ufs_hba *hba = ufs->hba;
> +
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_RXPHY_CFGUPDT), 0x1);
> +
> + if (pwr->lane == 1) {
> + exynos_ufs_enable_dbg_mode(hba);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), 0x1);
> + exynos_ufs_disable_dbg_mode(hba);
> + }
> +
> + return 0;
> +}
> +
> +struct exynos_ufs_drv_data exynos_ufs_drvs[] = {
> +{
> + .compatible = "samsung,exynos7-ufs",
> + .uic_attr = &exynos7_uic_attr,
> + .quirks = UFSHCI_QUIRK_BYTE_ALIGN_UTRD |
> + UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
> + UFSHCI_QUIRK_BROKEN_HCE |
> + UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR,
> + .opts = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
> + EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
> + EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
> + .drv_init = exynos7_ufs_drv_init,
> + .pre_link = exynos7_ufs_pre_link,
> + .post_link = exynos7_ufs_post_link,
> + .pre_pwr_change = exynos7_ufs_pre_pwr_change,
> + .post_pwr_change = exynos7_ufs_post_pwr_change,
> +}, {
> +}, };
> diff --git a/drivers/scsi/ufs/ufs-exynos-hw.h b/drivers/scsi/ufs/ufs-exynos-hw.h
> new file mode 100644
> index 000000000000..8473ec976b0c
> --- /dev/null
> +++ b/drivers/scsi/ufs/ufs-exynos-hw.h
> @@ -0,0 +1,43 @@
> +/*
> + * UFS Host Controller driver for Exynos specific extensions
> + *
> + * Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#ifndef _UFS_EXYNOS_HW_H_
> +#define _UFS_EXYNOS_HW_H_
> +
> +#include "ufs-exynos.h"
> +#include "unipro.h"
> +
> +struct exynos_ufs_uic_attr exynos7_uic_attr = {
> + .tx_trailingclks = 0x10,
> + .tx_dif_p_nsec = 3000000, /* unit: ns */
> + .tx_dif_n_nsec = 1000000, /* unit: ns */
> + .tx_high_z_cnt_nsec = 20000, /* unit: ns */
> + .tx_base_unit_nsec = 100000, /* unit: ns */
> + .tx_gran_unit_nsec = 4000, /* unit: ns */
> + .tx_sleep_cnt = 1000, /* unit: ns */
> + .tx_min_activatetime = 0xa,
> + .rx_filler_enable = 0x2,
> + .rx_dif_p_nsec = 1000000, /* unit: ns */
> + .rx_hibern8_wait_nsec = 4000000, /* unit: ns */
> + .rx_base_unit_nsec = 100000, /* unit: ns */
> + .rx_gran_unit_nsec = 4000, /* unit: ns */
> + .rx_sleep_cnt = 1280, /* unit: ns */
> + .rx_stall_cnt = 320, /* unit: ns */
> + .rx_hs_g1_sync_len_cap = SYNC_LEN_COARSE(0xf),
> + .rx_hs_g2_sync_len_cap = SYNC_LEN_COARSE(0xf),
> + .rx_hs_g3_sync_len_cap = SYNC_LEN_COARSE(0xf),
> + .rx_hs_g1_prep_sync_len_cap = PREP_LEN(0xf),
> + .rx_hs_g2_prep_sync_len_cap = PREP_LEN(0xf),
> + .rx_hs_g3_prep_sync_len_cap = PREP_LEN(0xf),
> + .pa_dbg_option_suite = 0x30103,
> +};
> +
> +#endif /* _UFS_EXYNOS_HW_H_ */
> diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
> new file mode 100644
> index 000000000000..2f99bbecb836
> --- /dev/null
> +++ b/drivers/scsi/ufs/ufs-exynos.c
> @@ -0,0 +1,1317 @@
> +/*
> + * UFS Host Controller driver for Exynos specific extensions
> + *
> + * Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
> + * Author: Seungwon Jeon <essuuj@...il.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/phy/phy-exynos-ufs.h>
> +#include <linux/platform_device.h>
> +
> +#include "ufshcd.h"
> +#include "ufshcd-pltfrm.h"
> +#include "ufshci.h"
> +#include "unipro.h"
> +
> +#include "ufs-exynos.h"
> +
> +/*
> + * Exynos's Vendor specific registers for UFSHCI
> + */
> +#define HCI_TXPRDT_ENTRY_SIZE 0x00
> +#define PRDT_PREFECT_EN BIT(31)
> +#define PRDT_SET_SIZE(x) ((x) & 0x1F)
> +#define HCI_RXPRDT_ENTRY_SIZE 0x04
> +#define HCI_1US_TO_CNT_VAL 0x0C
> +#define CNT_VAL_1US_MASK 0x3FF
> +#define HCI_UTRL_NEXUS_TYPE 0x40
> +#define HCI_UTMRL_NEXUS_TYPE 0x44
> +#define HCI_SW_RST 0x50
> +#define UFS_LINK_SW_RST BIT(0)
> +#define UFS_UNIPRO_SW_RST BIT(1)
> +#define UFS_SW_RST_MASK (UFS_UNIPRO_SW_RST | UFS_LINK_SW_RST)
> +#define HCI_DATA_REORDER 0x60
> +#define HCI_UNIPRO_APB_CLK_CTRL 0x68
> +#define UNIPRO_APB_CLK(v, x) (((v) & ~0xF) | ((x) & 0xF))
> +#define HCI_AXIDMA_RWDATA_BURST_LEN 0x6C
> +#define HCI_GPIO_OUT 0x70
> +#define HCI_ERR_EN_PA_LAYER 0x78
> +#define HCI_ERR_EN_DL_LAYER 0x7C
> +#define HCI_ERR_EN_N_LAYER 0x80
> +#define HCI_ERR_EN_T_LAYER 0x84
> +#define HCI_ERR_EN_DME_LAYER 0x88
> +#define HCI_CLKSTOP_CTRL 0xB0
> +#define REFCLK_STOP BIT(2)
> +#define UNIPRO_MCLK_STOP BIT(1)
> +#define UNIPRO_PCLK_STOP BIT(0)
> +#define CLK_STOP_MASK (REFCLK_STOP |\
> + UNIPRO_MCLK_STOP |\
> + UNIPRO_PCLK_STOP)
> +#define HCI_MISC 0xB4
> +#define REFCLK_CTRL_EN BIT(7)
> +#define UNIPRO_PCLK_CTRL_EN BIT(6)
> +#define UNIPRO_MCLK_CTRL_EN BIT(5)
> +#define HCI_CORECLK_CTRL_EN BIT(4)
> +#define CLK_CTRL_EN_MASK (REFCLK_CTRL_EN |\
> + UNIPRO_PCLK_CTRL_EN |\
> + UNIPRO_MCLK_CTRL_EN)
> +/* Device fatal error */
> +#define DFES_ERR_EN BIT(31)
> +#define DFES_DEF_L2_ERRS (UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OVERFLOW |\
> + UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
> +#define DFES_DEF_L3_ERRS (UIC_NETWORK_LAYER_ERROR_UNSUPPORTED_HEADER_TYPE |\
> + UIC_NETWORK_LAYER_ERROR_BAD_DEVICEID_ENC |\
> + UIC_NETWORK_LAYER_ERROR_LHDR_TRAP_PACKET_DROPPING)
> +#define DFES_DEF_L4_ERRS (UIC_TRANSPORT_LAYER_ERROR_UNSUPPORTED_HEADER_TYPE |\
> + UIC_TRANSPORT_LAYER_ERROR_UNKNOWN_CPORTID |\
> + UIC_TRANSPORT_LAYER_ERROR_NO_CONNECTION_RX |\
> + UIC_TRANSPORT_LAYER_ERROR_BAD_TC)
> +
> +enum {
> + UNIPRO_L1_5 = 0,/* PHY Adapter */
> + UNIPRO_L2, /* Data Link */
> + UNIPRO_L3, /* Network */
> + UNIPRO_L4, /* Transport */
> + UNIPRO_DME, /* DME */
> +};
> +
> +/*
> + * UNIPRO registers
> + */
> +#define UNIPRO_COMP_VERSION 0x000
> +#define UNIPRO_DME_PWR_REQ 0x090
> +#define UNIPRO_DME_PWR_REQ_POWERMODE 0x094
> +#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER0 0x098
> +#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER1 0x09C
> +#define UNIPRO_DME_PWR_REQ_LOCALL2TIMER2 0x0A0
> +#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER0 0x0A4
> +#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER1 0x0A8
> +#define UNIPRO_DME_PWR_REQ_REMOTEL2TIMER2 0x0AC
> +
> +/*
> + * UFS Protector registers
> + */
> +#define UFSPRSECURITY 0x010
> +#define NSSMU BIT(14)
> +#define UFSPSBEGIN0 0x200
> +#define UFSPSEND0 0x204
> +#define UFSPSLUN0 0x208
> +#define UFSPSCTRL0 0x20C
> +
> +static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en);
> +static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en);
> +
> +static inline struct exynos_ufs *to_exynos_ufs(struct ufs_hba *hba)
> +{
> + return hba->priv;
> +}
> +
> +static inline void exynos_ufs_enable_auto_ctrl_hcc(struct exynos_ufs *ufs)
> +{
> + exynos_ufs_auto_ctrl_hcc(ufs, true);
> +}
> +
> +static inline void exynos_ufs_disable_auto_ctrl_hcc(struct exynos_ufs *ufs)
> +{
> + exynos_ufs_auto_ctrl_hcc(ufs, false);
> +}
> +
> +static inline void exynos_ufs_disable_auto_ctrl_hcc_save(
> + struct exynos_ufs *ufs, u32 *val)
> +{
> + *val = hci_readl(ufs, HCI_MISC);
> + exynos_ufs_auto_ctrl_hcc(ufs, false);
> +}
> +
> +static inline void exynos_ufs_auto_ctrl_hcc_restore(
> + struct exynos_ufs *ufs, u32 *val)
> +{
> + hci_writel(ufs, *val, HCI_MISC);
> +}
> +
> +static inline void exynos_ufs_gate_clks(struct exynos_ufs *ufs)
> +{
> + exynos_ufs_ctrl_clkstop(ufs, true);
> +}
> +
> +static inline void exynos_ufs_ungate_clks(struct exynos_ufs *ufs)
> +{
> + exynos_ufs_ctrl_clkstop(ufs, false);
> +}
> +
> +/**
> + * exynos_ufs_auto_ctrl_hcc - HCI core clock control by h/w
> + * Control should be disabled in the below cases
> + * - Before host controller S/W reset
> + * - Access to UFS protector's register
> + */
> +static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en)
> +{
> + u32 misc = hci_readl(ufs, HCI_MISC);
> +
> + if (en)
> + hci_writel(ufs, misc | HCI_CORECLK_CTRL_EN, HCI_MISC);
> + else
> + hci_writel(ufs, misc & ~HCI_CORECLK_CTRL_EN, HCI_MISC);
> +}
> +
> +static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en)
> +{
> + u32 ctrl = hci_readl(ufs, HCI_CLKSTOP_CTRL);
> + u32 misc = hci_readl(ufs, HCI_MISC);
> +
> + if (en) {
> + hci_writel(ufs, misc | CLK_CTRL_EN_MASK, HCI_MISC);
> + hci_writel(ufs, ctrl | CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
> + } else {
> + hci_writel(ufs, ctrl & ~CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
> + hci_writel(ufs, misc & ~CLK_CTRL_EN_MASK, HCI_MISC);
> + }
> +}
> +
> +static int exynos_ufs_get_clk_info(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct list_head *head = &hba->clk_list_head;
> + struct ufs_clk_info *clki;
> + u32 pclk_rate;
> + u32 f_min, f_max;
> + u8 div = 0;
> + int ret = 0;
> +
> + if (!head || list_empty(head))
> + goto out;
> +
> + list_for_each_entry(clki, head, list) {
> + if (!IS_ERR(clki->clk)) {
> + if (!strcmp(clki->name, "core_clk"))
> + ufs->clk_hci_core = clki->clk;
> + else if (!strcmp(clki->name, "sclk_unipro_main"))
> + ufs->clk_unipro_main = clki->clk;
> + }
> + }
> +
> + if (!ufs->clk_hci_core || !ufs->clk_unipro_main) {
> + dev_err(hba->dev, "failed to get clk info\n");
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + ufs->mclk_rate = clk_get_rate(ufs->clk_unipro_main);
> + pclk_rate = clk_get_rate(ufs->clk_hci_core);
> + f_min = ufs->pclk_avail_min;
> + f_max = ufs->pclk_avail_max;
> +
> + if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
> + do {
> + pclk_rate /= (div + 1);
> +
> + if (pclk_rate <= f_max)
> + break;
> + div++;
> + } while (pclk_rate >= f_min);
> + }
> +
> + if (unlikely(pclk_rate < f_min || pclk_rate > f_max)) {
> + dev_err(hba->dev, "not available pclk range %d\n", pclk_rate);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + ufs->pclk_rate = pclk_rate;
> + ufs->pclk_div = div;
> +
> +out:
> + return ret;
> +}
> +
> +static void exynos_ufs_set_unipro_pclk_div(struct exynos_ufs *ufs)
> +{
> + if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
> + u32 val;
> +
> + val = hci_readl(ufs, HCI_UNIPRO_APB_CLK_CTRL);
> + hci_writel(ufs, UNIPRO_APB_CLK(val, ufs->pclk_div),
> + HCI_UNIPRO_APB_CLK_CTRL);
> + }
> +}
> +
> +static void exynos_ufs_set_pwm_clk_div(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> +
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(CMN_PWM_CLK_CTRL), attr->cmn_pwm_clk_ctrl);
> +}
> +
> +static void exynos_ufs_calc_pwm_clk_div(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> + const unsigned int div = 30, mult = 20;
> + const unsigned long pwm_min = 3 * 1000 * 1000;
> + const unsigned long pwm_max = 9 * 1000 * 1000;
> + const int divs[] = {32, 16, 8, 4};
> + unsigned long clk = 0, _clk, clk_period;
> + int i = 0, clk_idx = -1;
> +
> + clk_period = UNIPRO_PCLK_PERIOD(ufs);
> + for (i = 0; i < ARRAY_SIZE(divs); i++) {
> + _clk = NSEC_PER_SEC * mult / (clk_period * divs[i] * div);
> + if (_clk >= pwm_min && _clk <= pwm_max) {
> + if (_clk > clk) {
> + clk_idx = i;
> + clk = _clk;
> + }
> + }
> + }
> +
> + if (clk_idx == -1) {
> + ufshcd_dme_get(hba, UIC_ARG_MIB(CMN_PWM_CLK_CTRL), &clk_idx);
> + dev_err(hba->dev,
> + "failed to decide pwm clock divider, will not change\n");
> + }
> +
> + attr->cmn_pwm_clk_ctrl = clk_idx & PWM_CLK_CTRL_MASK;
> +}
> +
> +long exynos_ufs_calc_time_cntr(struct exynos_ufs *ufs, long period)
> +{
> + const int precise = 10;
> + long pclk_rate = ufs->pclk_rate;
> + long clk_period, fraction;
> +
> + clk_period = UNIPRO_PCLK_PERIOD(ufs);
> + fraction = ((NSEC_PER_SEC % pclk_rate) * precise) / pclk_rate;
> +
> + return (period * precise) / ((clk_period * precise) + fraction);
> +}
> +
> +static void exynos_ufs_specify_phy_time_attr(struct exynos_ufs *ufs)
> +{
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> + struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
> +
> + t_cfg->tx_linereset_p =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_p_nsec);
> + t_cfg->tx_linereset_n =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_n_nsec);
> + t_cfg->tx_high_z_cnt =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_high_z_cnt_nsec);
> + t_cfg->tx_base_n_val =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_base_unit_nsec);
> + t_cfg->tx_gran_n_val =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_gran_unit_nsec);
> + t_cfg->tx_sleep_cnt =
> + exynos_ufs_calc_time_cntr(ufs, attr->tx_sleep_cnt);
> +
> + t_cfg->rx_linereset =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_dif_p_nsec);
> + t_cfg->rx_hibern8_wait =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_hibern8_wait_nsec);
> + t_cfg->rx_base_n_val =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_base_unit_nsec);
> + t_cfg->rx_gran_n_val =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_gran_unit_nsec);
> + t_cfg->rx_sleep_cnt =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_sleep_cnt);
> + t_cfg->rx_stall_cnt =
> + exynos_ufs_calc_time_cntr(ufs, attr->rx_stall_cnt);
> +}
> +
> +static void exynos_ufs_config_phy_time_attr(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
> + int i;
> +
> + exynos_ufs_set_pwm_clk_div(ufs);
> +
> + exynos_ufs_enable_ov_tm(hba);
> +
> + for_each_ufs_rx_lane(ufs, i) {
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_FILLER_ENABLE, i),
> + ufs->drv_data->uic_attr->rx_filler_enable);
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_LINERESET_VAL, i),
> + RX_LINERESET(t_cfg->rx_linereset));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_07_00, i),
> + RX_BASE_NVAL_L(t_cfg->rx_base_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_15_08, i),
> + RX_BASE_NVAL_H(t_cfg->rx_base_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_07_00, i),
> + RX_GRAN_NVAL_L(t_cfg->rx_gran_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_10_08, i),
> + RX_GRAN_NVAL_H(t_cfg->rx_gran_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_SLEEP_CNT_TIMER, i),
> + RX_OV_SLEEP_CNT(t_cfg->rx_sleep_cnt));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_STALL_CNT_TIMER, i),
> + RX_OV_STALL_CNT(t_cfg->rx_stall_cnt));
> + }
> +
> + for_each_ufs_tx_lane(ufs, i) {
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_LINERESET_P_VAL, i),
> + TX_LINERESET_P(t_cfg->tx_linereset_p));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_07_00, i),
> + TX_HIGH_Z_CNT_L(t_cfg->tx_high_z_cnt));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_11_08, i),
> + TX_HIGH_Z_CNT_H(t_cfg->tx_high_z_cnt));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_07_00, i),
> + TX_BASE_NVAL_L(t_cfg->tx_base_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_15_08, i),
> + TX_BASE_NVAL_H(t_cfg->tx_base_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_07_00, i),
> + TX_GRAN_NVAL_L(t_cfg->tx_gran_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_10_08, i),
> + TX_GRAN_NVAL_H(t_cfg->tx_gran_n_val));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_OV_SLEEP_CNT_TIMER, i),
> + TX_OV_H8_ENTER_EN |
> + TX_OV_SLEEP_CNT(t_cfg->tx_sleep_cnt));
> + ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_MIN_ACTIVATETIME, i),
> + ufs->drv_data->uic_attr->tx_min_activatetime);
> + }
> +
> + exynos_ufs_disable_ov_tm(hba);
> +}
> +
> +static void exynos_ufs_config_phy_cap_attr(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> + int i;
> +
> + exynos_ufs_enable_ov_tm(hba);
> +
> + for_each_ufs_rx_lane(ufs, i) {
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G1_SYNC_LENGTH_CAP, i),
> + attr->rx_hs_g1_sync_len_cap);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G2_SYNC_LENGTH_CAP, i),
> + attr->rx_hs_g2_sync_len_cap);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G3_SYNC_LENGTH_CAP, i),
> + attr->rx_hs_g3_sync_len_cap);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G1_PREP_LENGTH_CAP, i),
> + attr->rx_hs_g1_prep_sync_len_cap);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G2_PREP_LENGTH_CAP, i),
> + attr->rx_hs_g2_prep_sync_len_cap);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HS_G3_PREP_LENGTH_CAP, i),
> + attr->rx_hs_g3_prep_sync_len_cap);
> + }
> +
> + if (attr->rx_adv_fine_gran_sup_en == 0) {
> + for_each_ufs_rx_lane(ufs, i) {
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP, i), 0);
> +
> + if (attr->rx_min_actv_time_cap)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_MIN_ACTIVATETIME_CAP,
> + i), attr->rx_min_actv_time_cap);
> +
> + if (attr->rx_hibern8_time_cap)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_HIBERN8TIME_CAP, i),
> + attr->rx_hibern8_time_cap);
> + }
> + } else if (attr->rx_adv_fine_gran_sup_en == 1) {
> + for_each_ufs_rx_lane(ufs, i) {
> + if (attr->rx_adv_fine_gran_step)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP,
> + i), RX_ADV_FINE_GRAN_STEP(
> + attr->rx_adv_fine_gran_step));
> +
> + if (attr->rx_adv_min_actv_time_cap)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(
> + RX_ADV_MIN_ACTIVATETIME_CAP, i),
> + attr->rx_adv_min_actv_time_cap);
> +
> + if (attr->rx_adv_hibern8_time_cap)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_ADV_HIBERN8TIME_CAP,
> + i),
> + attr->rx_adv_hibern8_time_cap);
> + }
> + }
> +
> + exynos_ufs_disable_ov_tm(hba);
> +}
> +
> +static void exynos_ufs_establish_connt(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + enum {
> + DEV_ID = 0x00,
> + PEER_DEV_ID = 0x01,
> + PEER_CPORT_ID = 0x00,
> + TRAFFIC_CLASS = 0x00,
> + };
> +
> + /* allow cport attributes to be set */
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_IDLE);
> +
> + /* local unipro attributes */
> + ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID), DEV_ID);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID_VALID), TRUE);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERDEVICEID), PEER_DEV_ID);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERCPORTID), PEER_CPORT_ID);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTFLAGS), CPORT_DEF_FLAGS);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_TRAFFICCLASS), TRAFFIC_CLASS);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_CONNECTED);
> +}
> +
> +static void exynos_ufs_config_smu(struct exynos_ufs *ufs)
> +{
> + u32 reg, val;
> +
> + exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
> +
> + /* make encryption disabled by default */
> + reg = ufsp_readl(ufs, UFSPRSECURITY);
> + ufsp_writel(ufs, reg | NSSMU, UFSPRSECURITY);
> + ufsp_writel(ufs, 0x0, UFSPSBEGIN0);
> + ufsp_writel(ufs, 0xffffffff, UFSPSEND0);
> + ufsp_writel(ufs, 0xff, UFSPSLUN0);
> + ufsp_writel(ufs, 0xf1, UFSPSCTRL0);
> +
> + exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
> +}
> +
> +static void exynos_ufs_config_sync_pattern_mask(struct exynos_ufs *ufs,
> + struct uic_pwr_mode *pwr)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + u8 g = pwr->gear;
> + u32 mask, sync_len;
> + enum {
> + SYNC_LEN_G1 = 80 * 1000, /* 80us */
> + SYNC_LEN_G2 = 40 * 1000, /* 44us */
> + SYNC_LEN_G3 = 20 * 1000, /* 20us */
> + };
> + int i;
> +
> + if (g == 1)
> + sync_len = SYNC_LEN_G1;
> + else if (g == 2)
> + sync_len = SYNC_LEN_G2;
> + else if (g == 3)
> + sync_len = SYNC_LEN_G3;
> + else
> + return;
> +
> + mask = exynos_ufs_calc_time_cntr(ufs, sync_len);
> + mask = (mask >> 8) & 0xff;
> +
> + exynos_ufs_enable_ov_tm(hba);
> +
> + for_each_ufs_rx_lane(ufs, i)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB_SEL(RX_SYNC_MASK_LENGTH, i), mask);
> +
> + exynos_ufs_disable_ov_tm(hba);
> +}
> +
> +static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba,
> + struct ufs_pa_layer_attr *pwr_max,
> + struct ufs_pa_layer_attr *final)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + struct exynos_ufs_phy_info *phy_info = phy_get_drvdata(ufs->phy);
> + struct exynos_ufs_phy_specific_ops *phy_ops =
> + phy_info->phy_specific_ops;
> + struct uic_pwr_mode *pwr_req = &ufs->pwr_req;
> + struct uic_pwr_mode *pwr_act = &ufs->pwr_act;
> +
> + final->gear_rx
> + = pwr_act->gear = min_t(u32, pwr_max->gear_rx, pwr_req->gear);
> + final->gear_tx
> + = pwr_act->gear = min_t(u32, pwr_max->gear_tx, pwr_req->gear);
> + final->lane_rx
> + = pwr_act->lane = min_t(u32, pwr_max->lane_rx, pwr_req->lane);
> + final->lane_tx
> + = pwr_act->lane = min_t(u32, pwr_max->lane_tx, pwr_req->lane);
> + final->pwr_rx = pwr_act->mode = pwr_req->mode;
> + final->pwr_tx = pwr_act->mode = pwr_req->mode;
> + final->hs_rate = pwr_act->hs_series = pwr_req->hs_series;
> +
> + /* save and configure l2 timer */
> + pwr_act->l_l2_timer[0] = pwr_req->l_l2_timer[0];
> + pwr_act->l_l2_timer[1] = pwr_req->l_l2_timer[1];
> + pwr_act->l_l2_timer[2] = pwr_req->l_l2_timer[2];
> + pwr_act->r_l2_timer[0] = pwr_req->r_l2_timer[0];
> + pwr_act->r_l2_timer[1] = pwr_req->r_l2_timer[1];
> + pwr_act->r_l2_timer[2] = pwr_req->r_l2_timer[2];
> +
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(DL_FC0PROTTIMEOUTVAL), pwr_act->l_l2_timer[0]);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(DL_TC0REPLAYTIMEOUTVAL), pwr_act->l_l2_timer[1]);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(DL_AFC0REQTIMEOUTVAL), pwr_act->l_l2_timer[2]);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(PA_PWRMODEUSERDATA0), pwr_act->r_l2_timer[0]);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(PA_PWRMODEUSERDATA1), pwr_act->r_l2_timer[1]);
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(PA_PWRMODEUSERDATA2), pwr_act->r_l2_timer[2]);
> +
> + unipro_writel(ufs,
> + pwr_act->l_l2_timer[0], UNIPRO_DME_PWR_REQ_LOCALL2TIMER0);
> + unipro_writel(ufs,
> + pwr_act->l_l2_timer[1], UNIPRO_DME_PWR_REQ_LOCALL2TIMER1);
> + unipro_writel(ufs,
> + pwr_act->l_l2_timer[2], UNIPRO_DME_PWR_REQ_LOCALL2TIMER2);
> + unipro_writel(ufs,
> + pwr_act->r_l2_timer[0], UNIPRO_DME_PWR_REQ_REMOTEL2TIMER0);
> + unipro_writel(ufs,
> + pwr_act->r_l2_timer[1], UNIPRO_DME_PWR_REQ_REMOTEL2TIMER1);
> + unipro_writel(ufs,
> + pwr_act->r_l2_timer[2], UNIPRO_DME_PWR_REQ_REMOTEL2TIMER2);
> +
> + if (ufs->drv_data->pre_pwr_change)
> + ufs->drv_data->pre_pwr_change(ufs, pwr_act);
> +
> + if (IS_UFS_PWR_MODE_HS(pwr_act->mode)) {
> + exynos_ufs_config_sync_pattern_mask(ufs, pwr_act);
> +
> + switch (pwr_act->hs_series) {
> + case PA_HS_MODE_A:
> + case PA_HS_MODE_B:
> + phy_ops->calibrate_phy(ufs->phy, CFG_PRE_PWR_HS,
> + PWR_MODE_HS(pwr_act->gear, pwr_act->hs_series));
> + break;
> + }
> + }
> +
> + return 0;
> +}
> +
> +#define PWR_MODE_STR_LEN 64
> +static int exynos_ufs_post_pwr_mode(struct ufs_hba *hba,
> + struct ufs_pa_layer_attr *pwr_max,
> + struct ufs_pa_layer_attr *pwr_req)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + struct exynos_ufs_phy_info *phy_info = phy_get_drvdata(ufs->phy);
> + struct exynos_ufs_phy_specific_ops *phy_ops =
> + phy_info->phy_specific_ops;
> + struct uic_pwr_mode *pwr = &ufs->pwr_act;
> + char pwr_str[PWR_MODE_STR_LEN] = "";
> + int ret = 0;
> +
> + if (ufs->drv_data->post_pwr_change)
> + ufs->drv_data->post_pwr_change(ufs, pwr);
> +
> + if (IS_UFS_PWR_MODE_HS(pwr->mode)) {
> + switch (pwr->hs_series) {
> + case PA_HS_MODE_A:
> + case PA_HS_MODE_B:
> + phy_ops->calibrate_phy(ufs->phy, CFG_POST_PWR_HS,
> + PWR_MODE_HS(pwr->gear, pwr->hs_series));
> + break;
> + }
> +
> + ret = phy_ops->wait_for_lock_acq(ufs->phy);
> + snprintf(pwr_str, sizeof(pwr_str), "Fast%s series_%s G_%d L_%d",
> + pwr->mode == FASTAUTO_MODE ? "_Auto" : "",
> + pwr->hs_series == PA_HS_MODE_A ? "A" : "B",
> + pwr->gear, pwr->lane);
> + } else if (IS_UFS_PWR_MODE_PWM(pwr->mode)) {
> + snprintf(pwr_str, sizeof(pwr_str), "Slow%s G_%d L_%d",
> + pwr->mode == SLOWAUTO_MODE ? "_Auto" : "",
> + pwr->gear, pwr->lane);
> + }
> +
> + dev_info(hba->dev, "Power mode change %d : %s\n", ret, pwr_str);
> + return ret;
> +}
> +
> +static void exynos_ufs_specify_nexus_t_xfer_req(struct ufs_hba *hba,
> + int tag, struct scsi_cmnd *cmd)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + u32 type;
> +
> + type = hci_readl(ufs, HCI_UTRL_NEXUS_TYPE);
> +
> + if (cmd)
> + hci_writel(ufs, type | (1 << tag), HCI_UTRL_NEXUS_TYPE);
> + else
> + hci_writel(ufs, type & ~(1 << tag), HCI_UTRL_NEXUS_TYPE);
> +}
> +
> +static void exynos_ufs_specify_nexus_t_tm_req(struct ufs_hba *hba,
> + int tag, u8 func)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + u32 type;
> +
> + type = hci_readl(ufs, HCI_UTMRL_NEXUS_TYPE);
> +
> + switch (func) {
> + case UFS_ABORT_TASK:
> + case UFS_QUERY_TASK:
> + hci_writel(ufs, type | (1 << tag), HCI_UTMRL_NEXUS_TYPE);
> + break;
> + case UFS_ABORT_TASK_SET:
> + case UFS_CLEAR_TASK_SET:
> + case UFS_LOGICAL_RESET:
> + case UFS_QUERY_TASK_SET:
> + hci_writel(ufs, type & ~(1 << tag), HCI_UTMRL_NEXUS_TYPE);
> + break;
> + }
> +}
> +
> +static void exynos_ufs_phy_init(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> + struct exynos_ufs_phy_info *phy_info = phy_get_drvdata(ufs->phy);
> + struct exynos_ufs_phy_specific_ops *phy_ops =
> + phy_info->phy_specific_ops;
> +
> + if (ufs->avail_ln_rx == 0 || ufs->avail_ln_tx == 0) {
> + ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILRXDATALANES),
> + &ufs->avail_ln_rx);
> + ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILTXDATALANES),
> + &ufs->avail_ln_tx);
> + WARN(ufs->avail_ln_rx != ufs->avail_ln_tx,
> + "available data lane is not equal(rx:%d, tx:%d)\n",
> + ufs->avail_ln_rx, ufs->avail_ln_tx);
> + }
> +
> + phy_ops->set_lane_cnt(ufs->phy, ufs->avail_ln_rx);
> + phy_ops->calibrate_phy(ufs->phy, CFG_PRE_INIT, PWR_MODE_ANY);
> +
> +}
> +
> +static void exynos_ufs_config_unipro(struct exynos_ufs *ufs)
> +{
> + struct ufs_hba *hba = ufs->hba;
> +
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_CLK_PERIOD),
> + DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTRAILINGCLOCKS),
> + ufs->drv_data->uic_attr->tx_trailingclks);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE),
> + ufs->drv_data->uic_attr->pa_dbg_option_suite);
> +}
> +
> +static void exynos_ufs_config_intr(struct exynos_ufs *ufs, u32 errs, u8 index)
> +{
> + switch (index) {
> + case UNIPRO_L1_5:
> + hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_PA_LAYER);
> + break;
> + case UNIPRO_L2:
> + hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DL_LAYER);
> + break;
> + case UNIPRO_L3:
> + hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_N_LAYER);
> + break;
> + case UNIPRO_L4:
> + hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_T_LAYER);
> + break;
> + case UNIPRO_DME:
> + hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DME_LAYER);
> + break;
> + }
> +}
> +
> +static int exynos_ufs_pre_link(struct ufs_hba *hba)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> +
> + /* hci */
> + exynos_ufs_config_intr(ufs, DFES_DEF_L2_ERRS, UNIPRO_L2);
> + exynos_ufs_config_intr(ufs, DFES_DEF_L3_ERRS, UNIPRO_L3);
> + exynos_ufs_config_intr(ufs, DFES_DEF_L4_ERRS, UNIPRO_L4);
> + exynos_ufs_set_unipro_pclk_div(ufs);
> +
> + /* unipro */
> + exynos_ufs_config_unipro(ufs);
> +
> + /* m-phy */
> + exynos_ufs_phy_init(ufs);
> + exynos_ufs_config_phy_time_attr(ufs);
> + exynos_ufs_config_phy_cap_attr(ufs);
> +
> + if (ufs->drv_data->pre_link)
> + ufs->drv_data->pre_link(ufs);
> +
> + return 0;
> +}
> +
> +static void exynos_ufs_fit_aggr_timeout(struct exynos_ufs *ufs)
> +{
> + const u8 cntr_div = 40;
> + u32 val;
> +
> + val = exynos_ufs_calc_time_cntr(ufs, IATOVAL_NSEC / cntr_div);
> + hci_writel(ufs, val & CNT_VAL_1US_MASK, HCI_1US_TO_CNT_VAL);
> +}
> +
> +static int exynos_ufs_post_link(struct ufs_hba *hba)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + struct exynos_ufs_phy_info *phy_info = phy_get_drvdata(ufs->phy);
> + struct exynos_ufs_phy_specific_ops *phy_ops =
> + phy_info->phy_specific_ops;
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> +
> + exynos_ufs_establish_connt(ufs);
> + exynos_ufs_fit_aggr_timeout(ufs);
> +
> + hci_writel(ufs, 0xa, HCI_DATA_REORDER);
> + hci_writel(ufs, PRDT_PREFECT_EN | PRDT_SET_SIZE(12),
> + HCI_TXPRDT_ENTRY_SIZE);
> + hci_writel(ufs, PRDT_SET_SIZE(12), HCI_RXPRDT_ENTRY_SIZE);
> + hci_writel(ufs, (1 << hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE);
> + hci_writel(ufs, (1 << hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE);
> + hci_writel(ufs, 0xf, HCI_AXIDMA_RWDATA_BURST_LEN);
> +
> + if (ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)
> + ufshcd_dme_set(hba,
> + UIC_ARG_MIB(T_DBG_SKIP_INIT_HIBERN8_EXIT), TRUE);
> +
> + if (attr->pa_granularity) {
> + exynos_ufs_enable_dbg_mode(hba);
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_GRANULARITY),
> + attr->pa_granularity);
> + exynos_ufs_disable_dbg_mode(hba);
> +
> + if (attr->pa_tactivate)
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
> + attr->pa_tactivate);
> + if (attr->pa_hibern8time &&
> + !(ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER))
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
> + attr->pa_hibern8time);
> + }
> +
> + if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
> + if (!attr->pa_granularity)
> + ufshcd_dme_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
> + &attr->pa_granularity);
> + if (!attr->pa_hibern8time)
> + ufshcd_dme_get(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
> + &attr->pa_hibern8time);
> + /*
> + * not wait for HIBERN8 time to exit hibernation
> + */
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 0);
> +
> + if (attr->pa_granularity < 1 || attr->pa_granularity > 6) {
> + /* Valid range for granularity: 1 ~ 6 */
> + dev_warn(hba->dev,
> + "%s: pa_granularty %d is invalid, assuming backwards compatibility\n",
> + __func__,
> + attr->pa_granularity);
> + attr->pa_granularity = 6;
> + }
> + }
> +
> + phy_ops->calibrate_phy(ufs->phy, CFG_POST_INIT, PWR_MODE_ANY);
> +
> + if (ufs->drv_data->post_link)
> + ufs->drv_data->post_link(ufs);
> +
> + return 0;
> +}
> +
> +static void exynos_ufs_specify_pwr_mode(struct device_node *np,
> + struct exynos_ufs *ufs)
> +{
> + struct uic_pwr_mode *pwr = &ufs->pwr_req;
> + const char *str = NULL;
> +
> + if (!of_property_read_string(np, "ufs,pwr-attr-mode", &str)) {
> + if (!strncmp(str, "FAST", sizeof("FAST")))
> + pwr->mode = FAST_MODE;
> + else if (!strncmp(str, "SLOW", sizeof("SLOW")))
> + pwr->mode = SLOW_MODE;
> + else if (!strncmp(str, "FAST_auto", sizeof("FAST_auto")))
> + pwr->mode = FASTAUTO_MODE;
> + else if (!strncmp(str, "SLOW_auto", sizeof("SLOW_auto")))
> + pwr->mode = SLOWAUTO_MODE;
> + else
> + pwr->mode = FAST_MODE;
> + } else {
> + pwr->mode = FAST_MODE;
> + }
> +
> + if (of_property_read_u32(np, "ufs,pwr-attr-lane", &pwr->lane))
> + pwr->lane = 1;
> +
> + if (of_property_read_u32(np, "ufs,pwr-attr-gear", &pwr->gear))
> + pwr->gear = 1;
> +
> + if (IS_UFS_PWR_MODE_HS(pwr->mode)) {
> + if (!of_property_read_string(np,
> + "ufs,pwr-attr-hs-series", &str)) {
> + if (!strncmp(str, "HS_rate_b", sizeof("HS_rate_b")))
> + pwr->hs_series = PA_HS_MODE_B;
> + else if (!strncmp(str, "HS_rate_a",
> + sizeof("HS_rate_a")))
> + pwr->hs_series = PA_HS_MODE_A;
> + else
> + pwr->hs_series = PA_HS_MODE_A;
> + } else {
> + pwr->hs_series = PA_HS_MODE_A;
> + }
> + }
> +
> + if (of_property_read_u32_array(
> + np, "ufs,pwr-local-l2-timer", pwr->l_l2_timer, 3)) {
> + pwr->l_l2_timer[0] = FC0PROTTIMEOUTVAL;
> + pwr->l_l2_timer[1] = TC0REPLAYTIMEOUTVAL;
> + pwr->l_l2_timer[2] = AFC0REQTIMEOUTVAL;
> + }
> +
> + if (of_property_read_u32_array(
> + np, "ufs,pwr-remote-l2-timer", pwr->r_l2_timer, 3)) {
> + pwr->r_l2_timer[0] = FC0PROTTIMEOUTVAL;
> + pwr->r_l2_timer[1] = TC0REPLAYTIMEOUTVAL;
> + pwr->r_l2_timer[2] = AFC0REQTIMEOUTVAL;
> + }
> +}
> +
> +static int exynos_ufs_parse_dt(struct device *dev, struct exynos_ufs *ufs)
> +{
> + struct device_node *np = dev->of_node;
> + struct exynos_ufs_drv_data *drv_data = exynos_ufs_drvs;
> + struct exynos_ufs_uic_attr *attr;
> + u32 freq[2];
> + int ret;
> +
> + while (drv_data->compatible) {
> + if (of_device_is_compatible(np, drv_data->compatible)) {
> + ufs->drv_data = drv_data;
> + break;
> + }
> + drv_data++;
> + }
> +
> + if (ufs->drv_data && ufs->drv_data->uic_attr) {
> + attr = ufs->drv_data->uic_attr;
> + } else {
> + dev_err(dev, "failed to get uic attributes\n");
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + ret = of_property_read_u32_array(np,
> + "pclk-freq-avail-range", freq, ARRAY_SIZE(freq));
> + if (!ret) {
> + ufs->pclk_avail_min = freq[0];
> + ufs->pclk_avail_max = freq[1];
> + } else {
> + dev_err(dev, "failed to get available pclk range\n");
> + goto out;
> + }
> +
> + exynos_ufs_specify_pwr_mode(np, ufs);
> +
> + if (!of_property_read_u32(np, "ufs-rx-adv-fine-gran-sup_en",
> + &attr->rx_adv_fine_gran_sup_en)) {
> + if (attr->rx_adv_fine_gran_sup_en == 0) {
> + /* 100us step */
> + if (of_property_read_u32(np,
> + "ufs-rx-min-activate-time-cap",
> + &attr->rx_min_actv_time_cap))
> + dev_warn(dev,
> + "ufs-rx-min-activate-time-cap is empty\n");
> +
> + if (of_property_read_u32(np,
> + "ufs-rx-hibern8-time-cap",
> + &attr->rx_hibern8_time_cap))
> + dev_warn(dev,
> + "ufs-rx-hibern8-time-cap is empty\n");
> + } else if (attr->rx_adv_fine_gran_sup_en == 1) {
> + /* fine granularity step */
> + if (of_property_read_u32(np,
> + "ufs-rx-adv-fine-gran-step",
> + &attr->rx_adv_fine_gran_step))
> + dev_warn(dev,
> + "ufs-rx-adv-fine-gran-step is empty\n");
> +
> + if (of_property_read_u32(np,
> + "ufs-rx-adv-min-activate-time-cap",
> + &attr->rx_adv_min_actv_time_cap))
> + dev_warn(dev,
> + "ufs-rx-adv-min-activate-time-cap is empty\n");
> +
> + if (of_property_read_u32(np,
> + "ufs-rx-adv-hibern8-time-cap",
> + &attr->rx_adv_hibern8_time_cap))
> + dev_warn(dev,
> + "ufs-rx-adv-hibern8-time-cap is empty\n");
> + } else {
> + dev_warn(dev,
> + "not supported val for ufs-rx-adv-fine-gran-sup_en %d\n",
> + attr->rx_adv_fine_gran_sup_en);
> + }
> + } else {
> + attr->rx_adv_fine_gran_sup_en = 0xf;
> + }
> +
> + if (!of_property_read_u32(np,
> + "ufs-pa-granularity", &attr->pa_granularity)) {
> + if (of_property_read_u32(np,
> + "ufs-pa-tacctivate", &attr->pa_tactivate))
> + dev_warn(dev, "ufs-pa-tacctivate is empty\n");
> +
> + if (of_property_read_u32(np,
> + "ufs-pa-hibern8time", &attr->pa_hibern8time))
> + dev_warn(dev, "ufs-pa-hibern8time is empty\n");
> + }
> +
> +out:
> + return ret;
> +}
> +
> +static int exynos_ufs_init(struct ufs_hba *hba)
> +{
> + struct device *dev = hba->dev;
> + struct platform_device *pdev = to_platform_device(dev);
> + struct exynos_ufs *ufs;
> + struct resource *res;
> + int ret;
> +
> + ufs = devm_kzalloc(dev, sizeof(*ufs), GFP_KERNEL);
> + if (!ufs)
> + return -ENOMEM;
> +
> + /* exynos-specific hci */
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vs_hci");
> + ufs->reg_hci = devm_ioremap_resource(dev, res);
> + if (!ufs->reg_hci) {
> + dev_err(dev, "cannot ioremap for hci vendor register\n");
> + return -ENOMEM;
> + }
> +
> + /* unipro */
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "unipro");
> + ufs->reg_unipro = devm_ioremap_resource(dev, res);
> + if (!ufs->reg_unipro) {
> + dev_err(dev, "cannot ioremap for unipro register\n");
> + return -ENOMEM;
> + }
> +
> + /* ufs protector */
> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ufsp");
> + ufs->reg_ufsp = devm_ioremap_resource(dev, res);
> + if (!ufs->reg_ufsp) {
> + dev_err(dev, "cannot ioremap for ufs protector register\n");
> + return -ENOMEM;
> + }
> +
> + ret = exynos_ufs_parse_dt(dev, ufs);
> + if (ret) {
> + dev_err(dev, "failed to get dt info.\n");
> + goto out;
> + }
> +
> + ufs->phy = devm_phy_get(dev, "ufs-phy");
> + if (IS_ERR(ufs->phy)) {
> + ret = PTR_ERR(ufs->phy);
> + dev_err(dev, "failed to get ufs-phy\n");
> + goto out;
> + }
> +
> + phy_init(ufs->phy);
> + ret = phy_power_on(ufs->phy);
> + if (ret)
> + goto phy_exit;
> +
> + ufs->hba = hba;
> + ufs->opts = ufs->drv_data->opts |
> + EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB |
> + EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER;
> + ufs->rx_sel_idx = PA_MAXDATALANES;
> + if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX)
> + ufs->rx_sel_idx = 0;
> + hba->priv = (void *)ufs;
> + hba->quirks = ufs->drv_data->quirks;
> + if (ufs->drv_data->drv_init) {
> + ret = ufs->drv_data->drv_init(dev, ufs);
> + if (ret) {
> + dev_err(dev, "failed to init drv-data\n");
> + goto phy_off;
> + }
> + }
> +
> + ret = exynos_ufs_get_clk_info(ufs);
> + if (ret)
> + goto phy_off;
> + exynos_ufs_specify_phy_time_attr(ufs);
> + exynos_ufs_config_smu(ufs);
> + return 0;
> +
> +phy_off:
> + phy_power_off(ufs->phy);
> +phy_exit:
> + phy_exit(ufs->phy);
> + hba->priv = NULL;
> +out:
> + return ret;
> +}
> +
> +static int exynos_ufs_host_reset(struct ufs_hba *hba)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + unsigned long timeout = jiffies + msecs_to_jiffies(1);
> + u32 val;
> + int ret = 0;
> +
> + exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
> +
> + hci_writel(ufs, UFS_SW_RST_MASK, HCI_SW_RST);
> +
> + do {
> + if (!(hci_readl(ufs, HCI_SW_RST) & UFS_SW_RST_MASK))
> + goto out;
> + } while (time_before(jiffies, timeout));
> +
> + dev_err(hba->dev, "timeout host sw-reset\n");
> + ret = -ETIMEDOUT;
> +
> +out:
> + exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
> + return ret;
> +}
> +
> +static void exynos_ufs_dev_hw_reset(struct ufs_hba *hba)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> +
> + hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
> + udelay(5);
> + hci_writel(ufs, 1 << 0, HCI_GPIO_OUT);
> +}
> +
> +static void exynos_ufs_pre_hibern8(struct ufs_hba *hba, u8 enter)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
> +
> + if (!enter) {
> + if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
> + exynos_ufs_disable_auto_ctrl_hcc(ufs);
> + exynos_ufs_ungate_clks(ufs);
> +
> + if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
> + const unsigned int granularity_tbl[] = {
> + 1, 4, 8, 16, 32, 100
> + };
> + int h8_time = attr->pa_hibern8time *
> + granularity_tbl[attr->pa_granularity - 1];
> + unsigned long us;
> + s64 delta;
> +
> + do {
> + delta = h8_time - ktime_us_delta(ktime_get(),
> + ufs->entry_hibern8_t);
> + if (delta <= 0)
> + break;
> +
> + us = min_t(s64, delta, USEC_PER_MSEC);
> + if (us >= 10)
> + usleep_range(us, us + 10);
> + } while (1);
> + }
> + }
> +}
> +
> +static void exynos_ufs_post_hibern8(struct ufs_hba *hba, u8 enter)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> +
> + if (!enter) {
> + struct uic_pwr_mode *pwr = &ufs->pwr_act;
> + u32 mode = 0;
> +
> + ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PWRMODE), &mode);
> + if (mode != (pwr->mode << 4 | pwr->mode)) {
> + dev_warn(hba->dev, "%s: power mode change\n", __func__);
> + hba->pwr_info.pwr_rx = (mode >> 4) & 0xf;
> + hba->pwr_info.pwr_tx = mode & 0xf;
> + ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info);
> + }
> +
> + if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB))
> + exynos_ufs_establish_connt(ufs);
> + } else {
> + ufs->entry_hibern8_t = ktime_get();
> + exynos_ufs_gate_clks(ufs);
> + if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
> + exynos_ufs_enable_auto_ctrl_hcc(ufs);
> + }
> +}
> +
> +static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba,
> + enum ufs_notify_change_status status)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> + int ret = 0;
> +
> + switch (status) {
> + case PRE_CHANGE:
> + ret = exynos_ufs_host_reset(hba);
> + if (ret)
> + return ret;
> + exynos_ufs_dev_hw_reset(hba);
> + break;
> + case POST_CHANGE:
> + exynos_ufs_calc_pwm_clk_div(ufs);
> + if (!(ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL))
> + exynos_ufs_enable_auto_ctrl_hcc(ufs);
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int exynos_ufs_link_startup_notify(struct ufs_hba *hba,
> + enum ufs_notify_change_status status)
> +{
> + int ret = 0;
> +
> + switch (status) {
> + case PRE_CHANGE:
> + ret = exynos_ufs_pre_link(hba);
> + break;
> + case POST_CHANGE:
> + ret = exynos_ufs_post_link(hba);
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int exynos_ufs_pwr_change_notify(struct ufs_hba *hba,
> + enum ufs_notify_change_status status,
> + struct ufs_pa_layer_attr *pwr_max,
> + struct ufs_pa_layer_attr *pwr_req)
> +{
> + int ret = 0;
> +
> + switch (status) {
> + case PRE_CHANGE:
> + ret = exynos_ufs_pre_pwr_mode(hba, pwr_max, pwr_req);
> + break;
> + case POST_CHANGE:
> + ret = exynos_ufs_post_pwr_mode(hba, NULL, pwr_req);
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static void exynos_ufs_hibern8_notify(struct ufs_hba *hba,
> + bool enter, bool notify)
> +{
> + switch ((u8)notify) {
> + case PRE_CHANGE:
> + exynos_ufs_pre_hibern8(hba, enter);
> + break;
> + case POST_CHANGE:
> + exynos_ufs_post_hibern8(hba, enter);
> + break;
> + }
> +}
> +
> +static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> +
> + if (!ufshcd_is_link_active(hba))
> + phy_power_off(ufs->phy);
> +
> + return 0;
> +}
> +
> +static int exynos_ufs_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
> +{
> + struct exynos_ufs *ufs = to_exynos_ufs(hba);
> +
> + if (!ufshcd_is_link_active(hba))
> + phy_power_on(ufs->phy);
> +
> + exynos_ufs_config_smu(ufs);
> +
> + return 0;
> +}
> +
> +static struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
> + .name = "exynos_ufs",
> + .init = exynos_ufs_init,
> + .hce_enable_notify = exynos_ufs_hce_enable_notify,
> + .link_startup_notify = exynos_ufs_link_startup_notify,
> + .pwr_change_notify = exynos_ufs_pwr_change_notify,
> + .specify_nexus_t_xfer_req = exynos_ufs_specify_nexus_t_xfer_req,
> + .specify_nexus_t_tm_req = exynos_ufs_specify_nexus_t_tm_req,
> + .hibern8_notify = exynos_ufs_hibern8_notify,
> + .suspend = exynos_ufs_suspend,
> + .resume = exynos_ufs_resume,
> +};
> +
> +static int exynos_ufs_probe(struct platform_device *pdev)
> +{
> + int err;
> + struct device *dev = &pdev->dev;
> +
> + err = ufshcd_pltfrm_init(pdev, &ufs_hba_exynos_ops);
> + if (err)
> + dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
> +
> + return err;
> +}
> +
> +static int exynos_ufs_remove(struct platform_device *pdev)
> +{
> + struct ufs_hba *hba = platform_get_drvdata(pdev);
> +
> + pm_runtime_get_sync(&(pdev)->dev);
> + ufshcd_remove(hba);
> + return 0;
> +}
> +
> +static const struct of_device_id exynos_ufs_of_match[] = {
> + { .compatible = "samsung,exynos7-ufs"},
> + {},
> +};
> +
> +static const struct dev_pm_ops exynos_ufs_pm_ops = {
> + .suspend = ufshcd_pltfrm_suspend,
> + .resume = ufshcd_pltfrm_resume,
> + .runtime_suspend = ufshcd_pltfrm_runtime_suspend,
> + .runtime_resume = ufshcd_pltfrm_runtime_resume,
> + .runtime_idle = ufshcd_pltfrm_runtime_idle,
> +};
> +
> +static struct platform_driver exynos_ufs_pltform = {
> + .probe = exynos_ufs_probe,
> + .remove = exynos_ufs_remove,
> + .shutdown = ufshcd_pltfrm_shutdown,
> + .driver = {
> + .name = "exynos-ufshc",
> + .pm = &exynos_ufs_pm_ops,
> + .of_match_table = of_match_ptr(exynos_ufs_of_match),
> + },
> +};
> +module_platform_driver(exynos_ufs_pltform);
> diff --git a/drivers/scsi/ufs/ufs-exynos.h b/drivers/scsi/ufs/ufs-exynos.h
> new file mode 100644
> index 000000000000..2b1a8b344cd9
> --- /dev/null
> +++ b/drivers/scsi/ufs/ufs-exynos.h
> @@ -0,0 +1,247 @@
> +/*
> + * UFS Host Controller driver for Exynos specific extensions
> + *
> + * Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + */
> +
> +#ifndef _UFS_EXYNOS_H_
> +#define _UFS_EXYNOS_H_
> +
> +/*
> + * UNIPRO registers
> + */
> +#define UNIPRO_DBG_FORCE_DME_CTRL_STATE 0x150
> +
> +/*
> + * MIBs for PA debug registers
> + */
> +#define PA_DBG_CLK_PERIOD 0x9514
> +#define PA_DBG_TXPHY_CFGUPDT 0x9518
> +#define PA_DBG_RXPHY_CFGUPDT 0x9519
> +#define PA_DBG_MODE 0x9529
> +#define PA_DBG_SKIP_RESET_PHY 0x9539
> +#define PA_DBG_OV_TM 0x9540
> +#define PA_DBG_SKIP_LINE_RESET 0x9541
> +#define PA_DBG_LINE_RESET_REQ 0x9543
> +#define PA_DBG_OPTION_SUITE 0x9564
> +#define PA_DBG_OPTION_SUITE_DYN 0x9565
> +
> +/*
> + * MIBs for Transport Layer debug registers
> + */
> +#define T_DBG_SKIP_INIT_HIBERN8_EXIT 0xc001
> +
> +/*
> + * Exynos MPHY attributes
> + */
> +#define TX_LINERESET_N_VAL 0x0277
> +#define TX_LINERESET_N(v) (((v) >> 10) & 0xFF)
> +#define TX_LINERESET_P_VAL 0x027D
> +#define TX_LINERESET_P(v) (((v) >> 12) & 0xFF)
> +#define TX_OV_SLEEP_CNT_TIMER 0x028E
> +#define TX_OV_H8_ENTER_EN (1 << 7)
> +#define TX_OV_SLEEP_CNT(v) (((v) >> 5) & 0x7F)
> +#define TX_HIGH_Z_CNT_11_08 0x028C
> +#define TX_HIGH_Z_CNT_H(v) (((v) >> 8) & 0xF)
> +#define TX_HIGH_Z_CNT_07_00 0x028D
> +#define TX_HIGH_Z_CNT_L(v) ((v) & 0xFF)
> +#define TX_BASE_NVAL_07_00 0x0293
> +#define TX_BASE_NVAL_L(v) ((v) & 0xFF)
> +#define TX_BASE_NVAL_15_08 0x0294
> +#define TX_BASE_NVAL_H(v) (((v) >> 8) & 0xFF)
> +#define TX_GRAN_NVAL_07_00 0x0295
> +#define TX_GRAN_NVAL_L(v) ((v) & 0xFF)
> +#define TX_GRAN_NVAL_10_08 0x0296
> +#define TX_GRAN_NVAL_H(v) (((v) >> 8) & 0x3)
> +
> +#define RX_FILLER_ENABLE 0x0316
> +#define RX_FILLER_EN (1 << 1)
> +#define RX_LINERESET_VAL 0x0317
> +#define RX_LINERESET(v) (((v) >> 12) & 0xFF)
> +#define RX_LCC_IGNORE 0x0318
> +#define RX_SYNC_MASK_LENGTH 0x0321
> +#define RX_HIBERN8_WAIT_VAL_BIT_20_16 0x0331
> +#define RX_HIBERN8_WAIT_VAL_BIT_15_08 0x0332
> +#define RX_HIBERN8_WAIT_VAL_BIT_07_00 0x0333
> +#define RX_OV_SLEEP_CNT_TIMER 0x0340
> +#define RX_OV_SLEEP_CNT(v) (((v) >> 6) & 0x1F)
> +#define RX_OV_STALL_CNT_TIMER 0x0341
> +#define RX_OV_STALL_CNT(v) (((v) >> 4) & 0xFF)
> +#define RX_BASE_NVAL_07_00 0x0355
> +#define RX_BASE_NVAL_L(v) ((v) & 0xFF)
> +#define RX_BASE_NVAL_15_08 0x0354
> +#define RX_BASE_NVAL_H(v) (((v) >> 8) & 0xFF)
> +#define RX_GRAN_NVAL_07_00 0x0353
> +#define RX_GRAN_NVAL_L(v) ((v) & 0xFF)
> +#define RX_GRAN_NVAL_10_08 0x0352
> +#define RX_GRAN_NVAL_H(v) (((v) >> 8) & 0x3)
> +
> +#define CMN_PWM_CLK_CTRL 0x0402
> +#define PWM_CLK_CTRL_MASK 0x3
> +
> +#define IATOVAL_NSEC 20000 /* unit: ns */
> +#define UNIPRO_PCLK_PERIOD(ufs) (NSEC_PER_SEC / ufs->pclk_rate)
> +
> +struct exynos_ufs;
> +
> +struct uic_pwr_mode {
> + u32 lane;
> + u32 gear;
> + u8 mode;
> + u8 hs_series;
> + u32 l_l2_timer[3]; /* local */
> + u32 r_l2_timer[3]; /* remote */
> +};
> +
> +struct exynos_ufs_uic_attr {
> + /* TX Attributes */
> + unsigned int tx_trailingclks;
> + unsigned int tx_dif_p_nsec;
> + unsigned int tx_dif_n_nsec;
> + unsigned int tx_high_z_cnt_nsec;
> + unsigned int tx_base_unit_nsec;
> + unsigned int tx_gran_unit_nsec;
> + unsigned int tx_sleep_cnt;
> + unsigned int tx_min_activatetime;
> + /* RX Attributes */
> + unsigned int rx_filler_enable;
> + unsigned int rx_dif_p_nsec;
> + unsigned int rx_hibern8_wait_nsec;
> + unsigned int rx_base_unit_nsec;
> + unsigned int rx_gran_unit_nsec;
> + unsigned int rx_sleep_cnt;
> + unsigned int rx_stall_cnt;
> + unsigned int rx_hs_g1_sync_len_cap;
> + unsigned int rx_hs_g2_sync_len_cap;
> + unsigned int rx_hs_g3_sync_len_cap;
> + unsigned int rx_hs_g1_prep_sync_len_cap;
> + unsigned int rx_hs_g2_prep_sync_len_cap;
> + unsigned int rx_hs_g3_prep_sync_len_cap;
> + /* Common Attributes */
> + unsigned int cmn_pwm_clk_ctrl;
> + /* Internal Attributes */
> + unsigned int pa_dbg_option_suite;
> + /* Changeable Attributes */
> + unsigned int rx_adv_fine_gran_sup_en;
> + unsigned int rx_adv_fine_gran_step;
> + unsigned int rx_min_actv_time_cap;
> + unsigned int rx_hibern8_time_cap;
> + unsigned int rx_adv_min_actv_time_cap;
> + unsigned int rx_adv_hibern8_time_cap;
> + unsigned int pa_granularity;
> + unsigned int pa_tactivate;
> + unsigned int pa_hibern8time;
> +};
> +
> +struct exynos_ufs_drv_data {
> + char *compatible;
> + struct exynos_ufs_uic_attr *uic_attr;
> + unsigned int quirks;
> + unsigned int opts;
> + /* SoC's specific operations */
> + int (*drv_init)(struct device *dev, struct exynos_ufs *ufs);
> + int (*pre_link)(struct exynos_ufs *ufs);
> + int (*post_link)(struct exynos_ufs *ufs);
> + int (*pre_pwr_change)(struct exynos_ufs *ufs, struct uic_pwr_mode *pwr);
> + int (*post_pwr_change)(struct exynos_ufs *ufs,
> + struct uic_pwr_mode *pwr);
> +};
> +
> +struct ufs_phy_time_cfg {
> + u32 tx_linereset_p;
> + u32 tx_linereset_n;
> + u32 tx_high_z_cnt;
> + u32 tx_base_n_val;
> + u32 tx_gran_n_val;
> + u32 tx_sleep_cnt;
> + u32 rx_linereset;
> + u32 rx_hibern8_wait;
> + u32 rx_base_n_val;
> + u32 rx_gran_n_val;
> + u32 rx_sleep_cnt;
> + u32 rx_stall_cnt;
> +};
> +
> +struct exynos_ufs {
> + struct ufs_hba *hba;
> + struct phy *phy;
> + void __iomem *reg_hci;
> + void __iomem *reg_unipro;
> + void __iomem *reg_ufsp;
> + struct clk *clk_hci_core;
> + struct clk *clk_unipro_main;
> + struct clk *clk_apb;
> + u32 pclk_rate;
> + u32 pclk_div;
> + u32 pclk_avail_min;
> + u32 pclk_avail_max;
> + u32 mclk_rate;
> + int avail_ln_rx;
> + int avail_ln_tx;
> + int rx_sel_idx;
> + struct uic_pwr_mode pwr_req; /* requested power mode */
> + struct uic_pwr_mode pwr_act; /* actual power mode */
> + struct ufs_phy_time_cfg t_cfg;
> + ktime_t entry_hibern8_t;
> + struct exynos_ufs_drv_data *drv_data;
> +
> + u32 opts;
> +#define EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL BIT(0)
> +#define EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB BIT(1)
> +#define EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL BIT(2)
> +#define EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX BIT(3)
> +#define EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER BIT(4)
> +};
> +
> +#define for_each_ufs_rx_lane(ufs, i) \
> + for (i = (ufs)->rx_sel_idx; \
> + i < (ufs)->rx_sel_idx + (ufs)->avail_ln_rx; i++)
> +#define for_each_ufs_tx_lane(ufs, i) \
> + for (i = 0; i < (ufs)->avail_ln_tx; i++)
> +
> +#define EXYNOS_UFS_MMIO_FUNC(name) \
> +static inline void name##_writel(struct exynos_ufs *ufs, u32 val, u32 reg)\
> +{ \
> + writel(val, ufs->reg_##name + reg); \
> +} \
> + \
> +static inline u32 name##_readl(struct exynos_ufs *ufs, u32 reg) \
> +{ \
> + return readl(ufs->reg_##name + reg); \
> +}
> +
> +EXYNOS_UFS_MMIO_FUNC(hci);
> +EXYNOS_UFS_MMIO_FUNC(unipro);
> +EXYNOS_UFS_MMIO_FUNC(ufsp);
> +#undef EXYNOS_UFS_MMIO_FUNC
> +
> +extern long exynos_ufs_calc_time_cntr(struct exynos_ufs *, long);
> +
> +static inline void exynos_ufs_enable_ov_tm(struct ufs_hba *hba)
> +{
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), TRUE);
> +}
> +
> +static inline void exynos_ufs_disable_ov_tm(struct ufs_hba *hba)
> +{
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), FALSE);
> +}
> +
> +static inline void exynos_ufs_enable_dbg_mode(struct ufs_hba *hba)
> +{
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), TRUE);
> +}
> +
> +static inline void exynos_ufs_disable_dbg_mode(struct ufs_hba *hba)
> +{
> + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), FALSE);
> +}
> +
> +extern struct exynos_ufs_drv_data exynos_ufs_drvs[];
> +
> +#endif /* _UFS_EXYNOS_H_ */
> diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
> index 0ae0967aaed8..1c734000d395 100644
> --- a/drivers/scsi/ufs/ufshci.h
> +++ b/drivers/scsi/ufs/ufshci.h
> @@ -169,15 +169,39 @@ enum {
> /* UECDL - Host UIC Error Code Data Link Layer 3Ch */
> #define UIC_DATA_LINK_LAYER_ERROR UFS_BIT(31)
> #define UIC_DATA_LINK_LAYER_ERROR_CODE_MASK 0x7FFF
> -#define UIC_DATA_LINK_LAYER_ERROR_PA_INIT 0x2000
> +#define UIC_DATA_LINK_LAYER_ERROR_NAC_RECEIVED UFS_BIT(0)
> +#define UIC_DATA_LINK_LAYER_ERROR_TCX_REP_TIMER_EXP UFS_BIT(1)
> +#define UIC_DATA_LINK_LAYER_ERROR_AFCX_REQ_TIMER_EXP UFS_BIT(2)
> +#define UIC_DATA_LINK_LAYER_ERROR_FCX_PRO_TIMER_EXP UFS_BIT(3)
> +#define UIC_DATA_LINK_LAYER_ERROR_CRC UFS_BIT(4)
> +#define UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OVERFLOW UFS_BIT(5)
> +#define UIC_DATA_LINK_LAYER_ERROR_MASK_FRAME_LEN_EXCD UFS_BIT(6)
> +#define UIC_DATA_LINK_LAYER_ERROR_WRONG_SEQ_NUM UFS_BIT(7)
> +#define UIC_DATA_LINK_LAYER_ERROR_AFC_FRAME_SYNTAX UFS_BIT(8)
> +#define UIC_DATA_LINK_LAYER_ERROR_NAC_FRAME_SYNTAX UFS_BIT(9)
> +#define UIC_DATA_LINK_LAYER_ERROR_EOF_SYNTAX UFS_BIT(10)
> +#define UIC_DATA_LINK_LAYER_ERROR_FRAME_SYNTAX UFS_BIT(11)
> +#define UIC_DATA_LINK_LAYER_ERROR_BAD_CTRL_SYMB_TYPE UFS_BIT(12)
> +#define UIC_DATA_LINK_LAYER_ERROR_PA_INIT UFS_BIT(13)
> +#define UIC_DATA_LINK_LAYER_ERROR_PA_ERROR_IND_RECV UFS_BIT(14)
>
> /* UECN - Host UIC Error Code Network Layer 40h */
> #define UIC_NETWORK_LAYER_ERROR UFS_BIT(31)
> #define UIC_NETWORK_LAYER_ERROR_CODE_MASK 0x7
> +#define UIC_NETWORK_LAYER_ERROR_UNSUPPORTED_HEADER_TYPE UFS_BIT(0)
> +#define UIC_NETWORK_LAYER_ERROR_BAD_DEVICEID_ENC UFS_BIT(1)
> +#define UIC_NETWORK_LAYER_ERROR_LHDR_TRAP_PACKET_DROPPING UFS_BIT(2)
>
> /* UECT - Host UIC Error Code Transport Layer 44h */
> #define UIC_TRANSPORT_LAYER_ERROR UFS_BIT(31)
> #define UIC_TRANSPORT_LAYER_ERROR_CODE_MASK 0x7F
> +#define UIC_TRANSPORT_LAYER_ERROR_UNSUPPORTED_HEADER_TYPE UFS_BIT(0)
> +#define UIC_TRANSPORT_LAYER_ERROR_UNKNOWN_CPORTID UFS_BIT(1)
> +#define UIC_TRANSPORT_LAYER_ERROR_NO_CONNECTION_RX UFS_BIT(2)
> +#define UIC_TRANSPORT_LAYER_ERROR_CONTROLLED_SEGMENT_DROPPING UFS_BIT(3)
> +#define UIC_TRANSPORT_LAYER_ERROR_BAD_TC UFS_BIT(4)
> +#define UIC_TRANSPORT_LAYER_ERROR_E2E_CREDIT_OVERFLOW UFS_BIT(5)
> +#define UIC_TRANSPORT_LAYER_ERROR_SAFETY_VALUE_DROPPING UFS_BIT(6)
>
> /* UECDME - Host UIC Error Code DME 48h */
> #define UIC_DME_ERROR UFS_BIT(31)
> diff --git a/drivers/scsi/ufs/unipro.h b/drivers/scsi/ufs/unipro.h
> index 816a8a46efb8..68cfece1a67a 100644
> --- a/drivers/scsi/ufs/unipro.h
> +++ b/drivers/scsi/ufs/unipro.h
> @@ -49,7 +49,27 @@
> #define RX_BYPASS_8B10B_ENABLE 0x00A8
> #define RX_TERMINATION_FORCE_ENABLE 0x0089
>
> +/*
> + * M-RX Capability Attributes
> + */
> +#define RX_HS_G1_SYNC_LENGTH_CAP 0x008B
> +#define RX_HS_G1_PREP_LENGTH_CAP 0x008C
> +#define RX_HS_G2_SYNC_LENGTH_CAP 0x0094
> +#define RX_HS_G3_SYNC_LENGTH_CAP 0x0095
> +#define RX_HS_G2_PREP_LENGTH_CAP 0x0096
> +#define RX_HS_G3_PREP_LENGTH_CAP 0x0097
> +#define RX_ADV_GRANULARITY_CAP 0x0098
> +#define RX_MIN_ACTIVATETIME_CAP 0x008F
> +#define RX_HIBERN8TIME_CAP 0x0092
> +#define RX_ADV_HIBERN8TIME_CAP 0x0099
> +#define RX_ADV_MIN_ACTIVATETIME_CAP 0x009A
> +
> #define is_mphy_tx_attr(attr) (attr < RX_MODE)
> +#define RX_ADV_FINE_GRAN_STEP(x) ((((x) & 0x3) << 1) | 0x1)
> +#define SYNC_LEN_FINE(x) ((x) & 0x3F)
> +#define SYNC_LEN_COARSE(x) ((1 << 6) | ((x) & 0x3F))
> +#define PREP_LEN(x) ((x) & 0xF)
> +
> /*
> * PHY Adpater attributes
> */
> @@ -87,6 +107,7 @@
> #define PA_PACPREQEOBTIMEOUT 0x1591
> #define PA_HIBERN8TIME 0x15A7
> #define PA_LOCALVERINFO 0x15A9
> +#define PA_GRANULARITY 0x15AA
> #define PA_TACTIVATE 0x15A8
> #define PA_PACPFRAMECOUNT 0x15C0
> #define PA_PACPERRORCOUNT 0x15C1
> @@ -110,6 +131,9 @@
> #define PA_STALLNOCONFIGTIME 0x15A3
> #define PA_SAVECONFIGTIME 0x15A4
>
> +/* PHY Adapter protocal constants */
> +#define PA_MAXDATALANES 4
> +
> /* PA power modes */
> enum {
> FAST_MODE = 1,
> @@ -119,6 +143,9 @@ enum {
> UNCHANGED = 7,
> };
>
> +#define IS_UFS_PWR_MODE_HS(m) (((m) == FAST_MODE) || ((m) == FASTAUTO_MODE))
> +#define IS_UFS_PWR_MODE_PWM(m) (((m) == SLOW_MODE) || ((m) == SLOWAUTO_MODE))
> +
> /* PA TX/RX Frequency Series */
> enum {
> PA_HS_MODE_A = 1,
> @@ -170,6 +197,11 @@ enum ufs_hs_gear_tag {
> #define DL_PEERTC1PRESENT 0x2066
> #define DL_PEERTC1RXINITCREVAL 0x2067
>
> +/* Default value of L2 Timer */
> +#define FC0PROTTIMEOUTVAL 8191
> +#define TC0REPLAYTIMEOUTVAL 65535
> +#define AFC0REQTIMEOUTVAL 32767
> +
> /*
> * Network Layer Attributes
> */
> @@ -212,4 +244,19 @@ enum {
> TRUE,
> };
>
> +/* CPort setting */
> +#define E2EFC_ON (1 << 0)
> +#define E2EFC_OFF (0 << 0)
> +#define CSD_N_ON (0 << 1)
> +#define CSD_N_OFF (1 << 1)
> +#define CSV_N_ON (0 << 2)
> +#define CSV_N_OFF (1 << 2)
> +#define CPORT_DEF_FLAGS (CSV_N_OFF | CSD_N_OFF | E2EFC_OFF)
> +
> +/* CPort connection state */
> +enum {
> + CPORT_IDLE = 0,
> + CPORT_CONNECTED,
> +};
> +
> #endif /* _UNIPRO_H_ */
>
--
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