drivers/ufs/host/ufs-exynos.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * UFS Host Controller driver for Exynos specific extensions
   4  *
   5  * Copyright (C) 2014-2015 Samsung Electronics Co., Ltd.
   6  * Author: Seungwon Jeon  <essuuj@gmail.com>
   7  * Author: Alim Akhtar <alim.akhtar@samsung.com>
   8  *
   9  */
  10
  11 #include <linux/clk.h>
  12 #include <linux/delay.h>
  13 #include <linux/module.h>
  14 #include <linux/of.h>
  15 #include <linux/of_address.h>
  16 #include <linux/mfd/syscon.h>
  17 #include <linux/phy/phy.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/regmap.h>
  20
  21 #include <ufs/ufshcd.h>
  22 #include "ufshcd-pltfrm.h"
  23 #include <ufs/ufshci.h>
  24 #include <ufs/unipro.h>
  25
  26 #include "ufs-exynos.h"
  27
  28 /*
  29  * Exynos's Vendor specific registers for UFSHCI
  30  */
  31 #define HCI_TXPRDT_ENTRY_SIZE   0x00
  32 #define PRDT_PREFECT_EN         BIT(31)
  33 #define PRDT_SET_SIZE(x)        ((x) & 0x1F)
  34 #define HCI_RXPRDT_ENTRY_SIZE   0x04
  35 #define HCI_1US_TO_CNT_VAL      0x0C
  36 #define CNT_VAL_1US_MASK        0x3FF
  37 #define HCI_UTRL_NEXUS_TYPE     0x40
  38 #define HCI_UTMRL_NEXUS_TYPE    0x44
  39 #define HCI_SW_RST              0x50
  40 #define UFS_LINK_SW_RST         BIT(0)
  41 #define UFS_UNIPRO_SW_RST       BIT(1)
  42 #define UFS_SW_RST_MASK         (UFS_UNIPRO_SW_RST | UFS_LINK_SW_RST)
  43 #define HCI_DATA_REORDER        0x60
  44 #define HCI_UNIPRO_APB_CLK_CTRL 0x68
  45 #define UNIPRO_APB_CLK(v, x)    (((v) & ~0xF) | ((x) & 0xF))
  46 #define HCI_AXIDMA_RWDATA_BURST_LEN     0x6C
  47 #define HCI_GPIO_OUT            0x70
  48 #define HCI_ERR_EN_PA_LAYER     0x78
  49 #define HCI_ERR_EN_DL_LAYER     0x7C
  50 #define HCI_ERR_EN_N_LAYER      0x80
  51 #define HCI_ERR_EN_T_LAYER      0x84
  52 #define HCI_ERR_EN_DME_LAYER    0x88
  53 #define HCI_CLKSTOP_CTRL        0xB0
  54 #define REFCLKOUT_STOP          BIT(4)
  55 #define MPHY_APBCLK_STOP        BIT(3)
  56 #define REFCLK_STOP             BIT(2)
  57 #define UNIPRO_MCLK_STOP        BIT(1)
  58 #define UNIPRO_PCLK_STOP        BIT(0)
  59 #define CLK_STOP_MASK           (REFCLKOUT_STOP | REFCLK_STOP |\
  60                                  UNIPRO_MCLK_STOP | MPHY_APBCLK_STOP|\
  61                                  UNIPRO_PCLK_STOP)
  62 #define HCI_MISC                0xB4
  63 #define REFCLK_CTRL_EN          BIT(7)
  64 #define UNIPRO_PCLK_CTRL_EN     BIT(6)
  65 #define UNIPRO_MCLK_CTRL_EN     BIT(5)
  66 #define HCI_CORECLK_CTRL_EN     BIT(4)
  67 #define CLK_CTRL_EN_MASK        (REFCLK_CTRL_EN |\
  68                                  UNIPRO_PCLK_CTRL_EN |\
  69                                  UNIPRO_MCLK_CTRL_EN)
  70 /* Device fatal error */
  71 #define DFES_ERR_EN             BIT(31)
  72 #define DFES_DEF_L2_ERRS        (UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF |\
  73                                  UIC_DATA_LINK_LAYER_ERROR_PA_INIT)
  74 #define DFES_DEF_L3_ERRS        (UIC_NETWORK_UNSUPPORTED_HEADER_TYPE |\
  75                                  UIC_NETWORK_BAD_DEVICEID_ENC |\
  76                                  UIC_NETWORK_LHDR_TRAP_PACKET_DROPPING)
  77 #define DFES_DEF_L4_ERRS        (UIC_TRANSPORT_UNSUPPORTED_HEADER_TYPE |\
  78                                  UIC_TRANSPORT_UNKNOWN_CPORTID |\
  79                                  UIC_TRANSPORT_NO_CONNECTION_RX |\
  80                                  UIC_TRANSPORT_BAD_TC)
  81
  82 /* FSYS UFS Shareability */
  83 #define UFS_WR_SHARABLE         BIT(2)
  84 #define UFS_RD_SHARABLE         BIT(1)
  85 #define UFS_SHARABLE            (UFS_WR_SHARABLE | UFS_RD_SHARABLE)
  86 #define UFS_SHAREABILITY_OFFSET 0x710
  87
  88 /* Multi-host registers */
  89 #define MHCTRL                  0xC4
  90 #define MHCTRL_EN_VH_MASK       (0xE)
  91 #define MHCTRL_EN_VH(vh)        (vh << 1)
  92 #define PH2VH_MBOX              0xD8
  93
  94 #define MH_MSG_MASK             (0xFF)
  95
  96 #define MH_MSG(id, msg)         ((id << 8) | (msg & 0xFF))
  97 #define MH_MSG_PH_READY         0x1
  98 #define MH_MSG_VH_READY         0x2
  99
 100 #define ALLOW_INQUIRY           BIT(25)
 101 #define ALLOW_MODE_SELECT       BIT(24)
 102 #define ALLOW_MODE_SENSE        BIT(23)
 103 #define ALLOW_PRE_FETCH         GENMASK(22, 21)
 104 #define ALLOW_READ_CMD_ALL      GENMASK(20, 18) /* read_6/10/16 */
 105 #define ALLOW_READ_BUFFER       BIT(17)
 106 #define ALLOW_READ_CAPACITY     GENMASK(16, 15)
 107 #define ALLOW_REPORT_LUNS       BIT(14)
 108 #define ALLOW_REQUEST_SENSE     BIT(13)
 109 #define ALLOW_SYNCHRONIZE_CACHE GENMASK(8, 7)
 110 #define ALLOW_TEST_UNIT_READY   BIT(6)
 111 #define ALLOW_UNMAP             BIT(5)
 112 #define ALLOW_VERIFY            BIT(4)
 113 #define ALLOW_WRITE_CMD_ALL     GENMASK(3, 1)   /* write_6/10/16 */
 114
 115 #define ALLOW_TRANS_VH_DEFAULT  (ALLOW_INQUIRY | ALLOW_MODE_SELECT | \
 116                                  ALLOW_MODE_SENSE | ALLOW_PRE_FETCH | \
 117                                  ALLOW_READ_CMD_ALL | ALLOW_READ_BUFFER | \
 118                                  ALLOW_READ_CAPACITY | ALLOW_REPORT_LUNS | \
 119                                  ALLOW_REQUEST_SENSE | ALLOW_SYNCHRONIZE_CACHE | \
 120                                  ALLOW_TEST_UNIT_READY | ALLOW_UNMAP | \
 121                                  ALLOW_VERIFY | ALLOW_WRITE_CMD_ALL)
 122
 123 #define HCI_MH_ALLOWABLE_TRAN_OF_VH             0x30C
 124 #define HCI_MH_IID_IN_TASK_TAG                  0X308
 125
 126 #define PH_READY_TIMEOUT_MS                     (5 * MSEC_PER_SEC)
 127
 128 enum {
 129         UNIPRO_L1_5 = 0,/* PHY Adapter */
 130         UNIPRO_L2,      /* Data Link */
 131         UNIPRO_L3,      /* Network */
 132         UNIPRO_L4,      /* Transport */
 133         UNIPRO_DME,     /* DME */
 134 };
 135
 136 /*
 137  * UNIPRO registers
 138  */
 139 #define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER0 0x78B8
 140 #define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER1 0x78BC
 141 #define UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER2 0x78C0
 142
 143 /*
 144  * UFS Protector registers
 145  */
 146 #define UFSPRSECURITY   0x010
 147 #define NSSMU           BIT(14)
 148 #define UFSPSBEGIN0     0x200
 149 #define UFSPSEND0       0x204
 150 #define UFSPSLUN0       0x208
 151 #define UFSPSCTRL0      0x20C
 152
 153 #define CNTR_DIV_VAL 40
 154
 155 static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en);
 156 static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en);
 157
 158 static inline void exynos_ufs_enable_auto_ctrl_hcc(struct exynos_ufs *ufs)
 159 {
 160         exynos_ufs_auto_ctrl_hcc(ufs, true);
 161 }
 162
 163 static inline void exynos_ufs_disable_auto_ctrl_hcc(struct exynos_ufs *ufs)
 164 {
 165         exynos_ufs_auto_ctrl_hcc(ufs, false);
 166 }
 167
 168 static inline void exynos_ufs_disable_auto_ctrl_hcc_save(
 169                                         struct exynos_ufs *ufs, u32 *val)
 170 {
 171         *val = hci_readl(ufs, HCI_MISC);
 172         exynos_ufs_auto_ctrl_hcc(ufs, false);
 173 }
 174
 175 static inline void exynos_ufs_auto_ctrl_hcc_restore(
 176                                         struct exynos_ufs *ufs, u32 *val)
 177 {
 178         hci_writel(ufs, *val, HCI_MISC);
 179 }
 180
 181 static inline void exynos_ufs_gate_clks(struct exynos_ufs *ufs)
 182 {
 183         exynos_ufs_ctrl_clkstop(ufs, true);
 184 }
 185
 186 static inline void exynos_ufs_ungate_clks(struct exynos_ufs *ufs)
 187 {
 188         exynos_ufs_ctrl_clkstop(ufs, false);
 189 }
 190
 191 static int exynos7_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
 192 {
 193         return 0;
 194 }
 195
 196 static int exynosauto_ufs_drv_init(struct device *dev, struct exynos_ufs *ufs)
 197 {
 198         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
 199
 200         /* IO Coherency setting */
 201         if (ufs->sysreg) {
 202                 return regmap_update_bits(ufs->sysreg,
 203                                           ufs->shareability_reg_offset,
 204                                           UFS_SHARABLE, UFS_SHARABLE);
 205         }
 206
 207         attr->tx_dif_p_nsec = 3200000;
 208
 209         return 0;
 210 }
 211
 212 static int exynosauto_ufs_post_hce_enable(struct exynos_ufs *ufs)
 213 {
 214         struct ufs_hba *hba = ufs->hba;
 215
 216         /* Enable Virtual Host #1 */
 217         ufshcd_rmwl(hba, MHCTRL_EN_VH_MASK, MHCTRL_EN_VH(1), MHCTRL);
 218         /* Default VH Transfer permissions */
 219         hci_writel(ufs, ALLOW_TRANS_VH_DEFAULT, HCI_MH_ALLOWABLE_TRAN_OF_VH);
 220         /* IID information is replaced in TASKTAG[7:5] instead of IID in UCD */
 221         hci_writel(ufs, 0x1, HCI_MH_IID_IN_TASK_TAG);
 222
 223         return 0;
 224 }
 225
 226 static int exynosauto_ufs_pre_link(struct exynos_ufs *ufs)
 227 {
 228         struct ufs_hba *hba = ufs->hba;
 229         int i;
 230         u32 tx_line_reset_period, rx_line_reset_period;
 231
 232         rx_line_reset_period = (RX_LINE_RESET_TIME * ufs->mclk_rate) / NSEC_PER_MSEC;
 233         tx_line_reset_period = (TX_LINE_RESET_TIME * ufs->mclk_rate) / NSEC_PER_MSEC;
 234
 235         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x40);
 236         for_each_ufs_rx_lane(ufs, i) {
 237                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_CLK_PRD, i),
 238                                DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
 239                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_CLK_PRD_EN, i), 0x0);
 240
 241                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_LINERESET_VALUE2, i),
 242                                (rx_line_reset_period >> 16) & 0xFF);
 243                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_LINERESET_VALUE1, i),
 244                                (rx_line_reset_period >> 8) & 0xFF);
 245                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_RX_LINERESET_VALUE0, i),
 246                                (rx_line_reset_period) & 0xFF);
 247
 248                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x2f, i), 0x79);
 249                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x84, i), 0x1);
 250                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x25, i), 0xf6);
 251         }
 252
 253         for_each_ufs_tx_lane(ufs, i) {
 254                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_TX_CLK_PRD, i),
 255                                DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
 256                 /* Not to affect VND_TX_LINERESET_PVALUE to VND_TX_CLK_PRD */
 257                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_TX_CLK_PRD_EN, i),
 258                                0x02);
 259
 260                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_TX_LINERESET_PVALUE2, i),
 261                                (tx_line_reset_period >> 16) & 0xFF);
 262                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_TX_LINERESET_PVALUE1, i),
 263                                (tx_line_reset_period >> 8) & 0xFF);
 264                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(VND_TX_LINERESET_PVALUE0, i),
 265                                (tx_line_reset_period) & 0xFF);
 266
 267                 /* TX PWM Gear Capability / PWM_G1_ONLY */
 268                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x04, i), 0x1);
 269         }
 270
 271         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x0);
 272
 273         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0x0);
 274
 275         ufshcd_dme_set(hba, UIC_ARG_MIB(0xa011), 0x8000);
 276
 277         return 0;
 278 }
 279
 280 static int exynosauto_ufs_pre_pwr_change(struct exynos_ufs *ufs,
 281                                          struct ufs_pa_layer_attr *pwr)
 282 {
 283         struct ufs_hba *hba = ufs->hba;
 284
 285         /* PACP_PWR_req and delivered to the remote DME */
 286         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0), 12000);
 287         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1), 32000);
 288         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2), 16000);
 289
 290         return 0;
 291 }
 292
 293 static int exynosauto_ufs_post_pwr_change(struct exynos_ufs *ufs,
 294                                           struct ufs_pa_layer_attr *pwr)
 295 {
 296         struct ufs_hba *hba = ufs->hba;
 297         u32 enabled_vh;
 298
 299         enabled_vh = ufshcd_readl(hba, MHCTRL) & MHCTRL_EN_VH_MASK;
 300
 301         /* Send physical host ready message to virtual hosts */
 302         ufshcd_writel(hba, MH_MSG(enabled_vh, MH_MSG_PH_READY), PH2VH_MBOX);
 303
 304         return 0;
 305 }
 306
 307 static int exynos7_ufs_pre_link(struct exynos_ufs *ufs)
 308 {
 309         struct ufs_hba *hba = ufs->hba;
 310         u32 val = ufs->drv_data->uic_attr->pa_dbg_option_suite;
 311         int i;
 312
 313         exynos_ufs_enable_ov_tm(hba);
 314         for_each_ufs_tx_lane(ufs, i)
 315                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x297, i), 0x17);
 316         for_each_ufs_rx_lane(ufs, i) {
 317                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x362, i), 0xff);
 318                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x363, i), 0x00);
 319         }
 320         exynos_ufs_disable_ov_tm(hba);
 321
 322         for_each_ufs_tx_lane(ufs, i)
 323                 ufshcd_dme_set(hba,
 324                         UIC_ARG_MIB_SEL(TX_HIBERN8_CONTROL, i), 0x0);
 325         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_TXPHY_CFGUPDT), 0x1);
 326         udelay(1);
 327         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val | (1 << 12));
 328         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_RESET_PHY), 0x1);
 329         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_SKIP_LINE_RESET), 0x1);
 330         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_LINE_RESET_REQ), 0x1);
 331         udelay(1600);
 332         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), val);
 333
 334         return 0;
 335 }
 336
 337 static int exynos7_ufs_post_link(struct exynos_ufs *ufs)
 338 {
 339         struct ufs_hba *hba = ufs->hba;
 340         int i;
 341
 342         exynos_ufs_enable_ov_tm(hba);
 343         for_each_ufs_tx_lane(ufs, i) {
 344                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x28b, i), 0x83);
 345                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x29a, i), 0x07);
 346                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x277, i),
 347                         TX_LINERESET_N(exynos_ufs_calc_time_cntr(ufs, 200000)));
 348         }
 349         exynos_ufs_disable_ov_tm(hba);
 350
 351         exynos_ufs_enable_dbg_mode(hba);
 352         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_SAVECONFIGTIME), 0xbb8);
 353         exynos_ufs_disable_dbg_mode(hba);
 354
 355         return 0;
 356 }
 357
 358 static int exynos7_ufs_pre_pwr_change(struct exynos_ufs *ufs,
 359                                                 struct ufs_pa_layer_attr *pwr)
 360 {
 361         unipro_writel(ufs, 0x22, UNIPRO_DBG_FORCE_DME_CTRL_STATE);
 362
 363         return 0;
 364 }
 365
 366 static int exynos7_ufs_post_pwr_change(struct exynos_ufs *ufs,
 367                                                 struct ufs_pa_layer_attr *pwr)
 368 {
 369         struct ufs_hba *hba = ufs->hba;
 370         int lanes = max_t(u32, pwr->lane_rx, pwr->lane_tx);
 371
 372         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_RXPHY_CFGUPDT), 0x1);
 373
 374         if (lanes == 1) {
 375                 exynos_ufs_enable_dbg_mode(hba);
 376                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_CONNECTEDTXDATALANES), 0x1);
 377                 exynos_ufs_disable_dbg_mode(hba);
 378         }
 379
 380         return 0;
 381 }
 382
 383 /*
 384  * exynos_ufs_auto_ctrl_hcc - HCI core clock control by h/w
 385  * Control should be disabled in the below cases
 386  * - Before host controller S/W reset
 387  * - Access to UFS protector's register
 388  */
 389 static void exynos_ufs_auto_ctrl_hcc(struct exynos_ufs *ufs, bool en)
 390 {
 391         u32 misc = hci_readl(ufs, HCI_MISC);
 392
 393         if (en)
 394                 hci_writel(ufs, misc | HCI_CORECLK_CTRL_EN, HCI_MISC);
 395         else
 396                 hci_writel(ufs, misc & ~HCI_CORECLK_CTRL_EN, HCI_MISC);
 397 }
 398
 399 static void exynos_ufs_ctrl_clkstop(struct exynos_ufs *ufs, bool en)
 400 {
 401         u32 ctrl = hci_readl(ufs, HCI_CLKSTOP_CTRL);
 402         u32 misc = hci_readl(ufs, HCI_MISC);
 403
 404         if (en) {
 405                 hci_writel(ufs, misc | CLK_CTRL_EN_MASK, HCI_MISC);
 406                 hci_writel(ufs, ctrl | CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
 407         } else {
 408                 hci_writel(ufs, ctrl & ~CLK_STOP_MASK, HCI_CLKSTOP_CTRL);
 409                 hci_writel(ufs, misc & ~CLK_CTRL_EN_MASK, HCI_MISC);
 410         }
 411 }
 412
 413 static int exynos_ufs_get_clk_info(struct exynos_ufs *ufs)
 414 {
 415         struct ufs_hba *hba = ufs->hba;
 416         struct list_head *head = &hba->clk_list_head;
 417         struct ufs_clk_info *clki;
 418         unsigned long pclk_rate;
 419         u32 f_min, f_max;
 420         u8 div = 0;
 421         int ret = 0;
 422
 423         if (list_empty(head))
 424                 goto out;
 425
 426         list_for_each_entry(clki, head, list) {
 427                 if (!IS_ERR(clki->clk)) {
 428                         if (!strcmp(clki->name, "core_clk"))
 429                                 ufs->clk_hci_core = clki->clk;
 430                         else if (!strcmp(clki->name, "sclk_unipro_main"))
 431                                 ufs->clk_unipro_main = clki->clk;
 432                 }
 433         }
 434
 435         if (!ufs->clk_hci_core || !ufs->clk_unipro_main) {
 436                 dev_err(hba->dev, "failed to get clk info\n");
 437                 ret = -EINVAL;
 438                 goto out;
 439         }
 440
 441         ufs->mclk_rate = clk_get_rate(ufs->clk_unipro_main);
 442         pclk_rate = clk_get_rate(ufs->clk_hci_core);
 443         f_min = ufs->pclk_avail_min;
 444         f_max = ufs->pclk_avail_max;
 445
 446         if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
 447                 do {
 448                         pclk_rate /= (div + 1);
 449
 450                         if (pclk_rate <= f_max)
 451                                 break;
 452                         div++;
 453                 } while (pclk_rate >= f_min);
 454         }
 455
 456         if (unlikely(pclk_rate < f_min || pclk_rate > f_max)) {
 457                 dev_err(hba->dev, "not available pclk range %lu\n", pclk_rate);
 458                 ret = -EINVAL;
 459                 goto out;
 460         }
 461
 462         ufs->pclk_rate = pclk_rate;
 463         ufs->pclk_div = div;
 464
 465 out:
 466         return ret;
 467 }
 468
 469 static void exynos_ufs_set_unipro_pclk_div(struct exynos_ufs *ufs)
 470 {
 471         if (ufs->opts & EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL) {
 472                 u32 val;
 473
 474                 val = hci_readl(ufs, HCI_UNIPRO_APB_CLK_CTRL);
 475                 hci_writel(ufs, UNIPRO_APB_CLK(val, ufs->pclk_div),
 476                            HCI_UNIPRO_APB_CLK_CTRL);
 477         }
 478 }
 479
 480 static void exynos_ufs_set_pwm_clk_div(struct exynos_ufs *ufs)
 481 {
 482         struct ufs_hba *hba = ufs->hba;
 483         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
 484
 485         ufshcd_dme_set(hba,
 486                 UIC_ARG_MIB(CMN_PWM_CLK_CTRL), attr->cmn_pwm_clk_ctrl);
 487 }
 488
 489 static void exynos_ufs_calc_pwm_clk_div(struct exynos_ufs *ufs)
 490 {
 491         struct ufs_hba *hba = ufs->hba;
 492         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
 493         const unsigned int div = 30, mult = 20;
 494         const unsigned long pwm_min = 3 * 1000 * 1000;
 495         const unsigned long pwm_max = 9 * 1000 * 1000;
 496         const int divs[] = {32, 16, 8, 4};
 497         unsigned long clk = 0, _clk, clk_period;
 498         int i = 0, clk_idx = -1;
 499
 500         clk_period = UNIPRO_PCLK_PERIOD(ufs);
 501         for (i = 0; i < ARRAY_SIZE(divs); i++) {
 502                 _clk = NSEC_PER_SEC * mult / (clk_period * divs[i] * div);
 503                 if (_clk >= pwm_min && _clk <= pwm_max) {
 504                         if (_clk > clk) {
 505                                 clk_idx = i;
 506                                 clk = _clk;
 507                         }
 508                 }
 509         }
 510
 511         if (clk_idx == -1) {
 512                 ufshcd_dme_get(hba, UIC_ARG_MIB(CMN_PWM_CLK_CTRL), &clk_idx);
 513                 dev_err(hba->dev,
 514                         "failed to decide pwm clock divider, will not change\n");
 515         }
 516
 517         attr->cmn_pwm_clk_ctrl = clk_idx & PWM_CLK_CTRL_MASK;
 518 }
 519
 520 long exynos_ufs_calc_time_cntr(struct exynos_ufs *ufs, long period)
 521 {
 522         const int precise = 10;
 523         long pclk_rate = ufs->pclk_rate;
 524         long clk_period, fraction;
 525
 526         clk_period = UNIPRO_PCLK_PERIOD(ufs);
 527         fraction = ((NSEC_PER_SEC % pclk_rate) * precise) / pclk_rate;
 528
 529         return (period * precise) / ((clk_period * precise) + fraction);
 530 }
 531
 532 static void exynos_ufs_specify_phy_time_attr(struct exynos_ufs *ufs)
 533 {
 534         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
 535         struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
 536
 537         t_cfg->tx_linereset_p =
 538                 exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_p_nsec);
 539         t_cfg->tx_linereset_n =
 540                 exynos_ufs_calc_time_cntr(ufs, attr->tx_dif_n_nsec);
 541         t_cfg->tx_high_z_cnt =
 542                 exynos_ufs_calc_time_cntr(ufs, attr->tx_high_z_cnt_nsec);
 543         t_cfg->tx_base_n_val =
 544                 exynos_ufs_calc_time_cntr(ufs, attr->tx_base_unit_nsec);
 545         t_cfg->tx_gran_n_val =
 546                 exynos_ufs_calc_time_cntr(ufs, attr->tx_gran_unit_nsec);
 547         t_cfg->tx_sleep_cnt =
 548                 exynos_ufs_calc_time_cntr(ufs, attr->tx_sleep_cnt);
 549
 550         t_cfg->rx_linereset =
 551                 exynos_ufs_calc_time_cntr(ufs, attr->rx_dif_p_nsec);
 552         t_cfg->rx_hibern8_wait =
 553                 exynos_ufs_calc_time_cntr(ufs, attr->rx_hibern8_wait_nsec);
 554         t_cfg->rx_base_n_val =
 555                 exynos_ufs_calc_time_cntr(ufs, attr->rx_base_unit_nsec);
 556         t_cfg->rx_gran_n_val =
 557                 exynos_ufs_calc_time_cntr(ufs, attr->rx_gran_unit_nsec);
 558         t_cfg->rx_sleep_cnt =
 559                 exynos_ufs_calc_time_cntr(ufs, attr->rx_sleep_cnt);
 560         t_cfg->rx_stall_cnt =
 561                 exynos_ufs_calc_time_cntr(ufs, attr->rx_stall_cnt);
 562 }
 563
 564 static void exynos_ufs_config_phy_time_attr(struct exynos_ufs *ufs)
 565 {
 566         struct ufs_hba *hba = ufs->hba;
 567         struct ufs_phy_time_cfg *t_cfg = &ufs->t_cfg;
 568         int i;
 569
 570         exynos_ufs_set_pwm_clk_div(ufs);
 571
 572         exynos_ufs_enable_ov_tm(hba);
 573
 574         for_each_ufs_rx_lane(ufs, i) {
 575                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_FILLER_ENABLE, i),
 576                                 ufs->drv_data->uic_attr->rx_filler_enable);
 577                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_LINERESET_VAL, i),
 578                                 RX_LINERESET(t_cfg->rx_linereset));
 579                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_07_00, i),
 580                                 RX_BASE_NVAL_L(t_cfg->rx_base_n_val));
 581                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_BASE_NVAL_15_08, i),
 582                                 RX_BASE_NVAL_H(t_cfg->rx_base_n_val));
 583                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_07_00, i),
 584                                 RX_GRAN_NVAL_L(t_cfg->rx_gran_n_val));
 585                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_GRAN_NVAL_10_08, i),
 586                                 RX_GRAN_NVAL_H(t_cfg->rx_gran_n_val));
 587                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_SLEEP_CNT_TIMER, i),
 588                                 RX_OV_SLEEP_CNT(t_cfg->rx_sleep_cnt));
 589                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(RX_OV_STALL_CNT_TIMER, i),
 590                                 RX_OV_STALL_CNT(t_cfg->rx_stall_cnt));
 591         }
 592
 593         for_each_ufs_tx_lane(ufs, i) {
 594                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_LINERESET_P_VAL, i),
 595                                 TX_LINERESET_P(t_cfg->tx_linereset_p));
 596                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_07_00, i),
 597                                 TX_HIGH_Z_CNT_L(t_cfg->tx_high_z_cnt));
 598                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_HIGH_Z_CNT_11_08, i),
 599                                 TX_HIGH_Z_CNT_H(t_cfg->tx_high_z_cnt));
 600                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_07_00, i),
 601                                 TX_BASE_NVAL_L(t_cfg->tx_base_n_val));
 602                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_BASE_NVAL_15_08, i),
 603                                 TX_BASE_NVAL_H(t_cfg->tx_base_n_val));
 604                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_07_00, i),
 605                                 TX_GRAN_NVAL_L(t_cfg->tx_gran_n_val));
 606                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_GRAN_NVAL_10_08, i),
 607                                 TX_GRAN_NVAL_H(t_cfg->tx_gran_n_val));
 608                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_OV_SLEEP_CNT_TIMER, i),
 609                                 TX_OV_H8_ENTER_EN |
 610                                 TX_OV_SLEEP_CNT(t_cfg->tx_sleep_cnt));
 611                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(TX_MIN_ACTIVATETIME, i),
 612                                 ufs->drv_data->uic_attr->tx_min_activatetime);
 613         }
 614
 615         exynos_ufs_disable_ov_tm(hba);
 616 }
 617
 618 static void exynos_ufs_config_phy_cap_attr(struct exynos_ufs *ufs)
 619 {
 620         struct ufs_hba *hba = ufs->hba;
 621         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
 622         int i;
 623
 624         exynos_ufs_enable_ov_tm(hba);
 625
 626         for_each_ufs_rx_lane(ufs, i) {
 627                 ufshcd_dme_set(hba,
 628                                 UIC_ARG_MIB_SEL(RX_HS_G1_SYNC_LENGTH_CAP, i),
 629                                 attr->rx_hs_g1_sync_len_cap);
 630                 ufshcd_dme_set(hba,
 631                                 UIC_ARG_MIB_SEL(RX_HS_G2_SYNC_LENGTH_CAP, i),
 632                                 attr->rx_hs_g2_sync_len_cap);
 633                 ufshcd_dme_set(hba,
 634                                 UIC_ARG_MIB_SEL(RX_HS_G3_SYNC_LENGTH_CAP, i),
 635                                 attr->rx_hs_g3_sync_len_cap);
 636                 ufshcd_dme_set(hba,
 637                                 UIC_ARG_MIB_SEL(RX_HS_G1_PREP_LENGTH_CAP, i),
 638                                 attr->rx_hs_g1_prep_sync_len_cap);
 639                 ufshcd_dme_set(hba,
 640                                 UIC_ARG_MIB_SEL(RX_HS_G2_PREP_LENGTH_CAP, i),
 641                                 attr->rx_hs_g2_prep_sync_len_cap);
 642                 ufshcd_dme_set(hba,
 643                                 UIC_ARG_MIB_SEL(RX_HS_G3_PREP_LENGTH_CAP, i),
 644                                 attr->rx_hs_g3_prep_sync_len_cap);
 645         }
 646
 647         if (attr->rx_adv_fine_gran_sup_en == 0) {
 648                 for_each_ufs_rx_lane(ufs, i) {
 649                         ufshcd_dme_set(hba,
 650                                 UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP, i), 0);
 651
 652                         if (attr->rx_min_actv_time_cap)
 653                                 ufshcd_dme_set(hba,
 654                                         UIC_ARG_MIB_SEL(
 655                                         RX_MIN_ACTIVATETIME_CAPABILITY, i),
 656                                         attr->rx_min_actv_time_cap);
 657
 658                         if (attr->rx_hibern8_time_cap)
 659                                 ufshcd_dme_set(hba,
 660                                         UIC_ARG_MIB_SEL(RX_HIBERN8TIME_CAP, i),
 661                                                 attr->rx_hibern8_time_cap);
 662                 }
 663         } else if (attr->rx_adv_fine_gran_sup_en == 1) {
 664                 for_each_ufs_rx_lane(ufs, i) {
 665                         if (attr->rx_adv_fine_gran_step)
 666                                 ufshcd_dme_set(hba,
 667                                         UIC_ARG_MIB_SEL(RX_ADV_GRANULARITY_CAP,
 668                                                 i), RX_ADV_FINE_GRAN_STEP(
 669                                                 attr->rx_adv_fine_gran_step));
 670
 671                         if (attr->rx_adv_min_actv_time_cap)
 672                                 ufshcd_dme_set(hba,
 673                                         UIC_ARG_MIB_SEL(
 674                                                 RX_ADV_MIN_ACTIVATETIME_CAP, i),
 675                                                 attr->rx_adv_min_actv_time_cap);
 676
 677                         if (attr->rx_adv_hibern8_time_cap)
 678                                 ufshcd_dme_set(hba,
 679                                         UIC_ARG_MIB_SEL(RX_ADV_HIBERN8TIME_CAP,
 680                                                 i),
 681                                                 attr->rx_adv_hibern8_time_cap);
 682                 }
 683         }
 684
 685         exynos_ufs_disable_ov_tm(hba);
 686 }
 687
 688 static void exynos_ufs_establish_connt(struct exynos_ufs *ufs)
 689 {
 690         struct ufs_hba *hba = ufs->hba;
 691         enum {
 692                 DEV_ID          = 0x00,
 693                 PEER_DEV_ID     = 0x01,
 694                 PEER_CPORT_ID   = 0x00,
 695                 TRAFFIC_CLASS   = 0x00,
 696         };
 697
 698         /* allow cport attributes to be set */
 699         ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_IDLE);
 700
 701         /* local unipro attributes */
 702         ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID), DEV_ID);
 703         ufshcd_dme_set(hba, UIC_ARG_MIB(N_DEVICEID_VALID), true);
 704         ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERDEVICEID), PEER_DEV_ID);
 705         ufshcd_dme_set(hba, UIC_ARG_MIB(T_PEERCPORTID), PEER_CPORT_ID);
 706         ufshcd_dme_set(hba, UIC_ARG_MIB(T_CPORTFLAGS), CPORT_DEF_FLAGS);
 707         ufshcd_dme_set(hba, UIC_ARG_MIB(T_TRAFFICCLASS), TRAFFIC_CLASS);
 708         ufshcd_dme_set(hba, UIC_ARG_MIB(T_CONNECTIONSTATE), CPORT_CONNECTED);
 709 }
 710
 711 static void exynos_ufs_config_smu(struct exynos_ufs *ufs)
 712 {
 713         u32 reg, val;
 714
 715         exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
 716
 717         /* make encryption disabled by default */
 718         reg = ufsp_readl(ufs, UFSPRSECURITY);
 719         ufsp_writel(ufs, reg | NSSMU, UFSPRSECURITY);
 720         ufsp_writel(ufs, 0x0, UFSPSBEGIN0);
 721         ufsp_writel(ufs, 0xffffffff, UFSPSEND0);
 722         ufsp_writel(ufs, 0xff, UFSPSLUN0);
 723         ufsp_writel(ufs, 0xf1, UFSPSCTRL0);
 724
 725         exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
 726 }
 727
 728 static void exynos_ufs_config_sync_pattern_mask(struct exynos_ufs *ufs,
 729                                         struct ufs_pa_layer_attr *pwr)
 730 {
 731         struct ufs_hba *hba = ufs->hba;
 732         u8 g = max_t(u32, pwr->gear_rx, pwr->gear_tx);
 733         u32 mask, sync_len;
 734         enum {
 735                 SYNC_LEN_G1 = 80 * 1000, /* 80us */
 736                 SYNC_LEN_G2 = 40 * 1000, /* 44us */
 737                 SYNC_LEN_G3 = 20 * 1000, /* 20us */
 738         };
 739         int i;
 740
 741         if (g == 1)
 742                 sync_len = SYNC_LEN_G1;
 743         else if (g == 2)
 744                 sync_len = SYNC_LEN_G2;
 745         else if (g == 3)
 746                 sync_len = SYNC_LEN_G3;
 747         else
 748                 return;
 749
 750         mask = exynos_ufs_calc_time_cntr(ufs, sync_len);
 751         mask = (mask >> 8) & 0xff;
 752
 753         exynos_ufs_enable_ov_tm(hba);
 754
 755         for_each_ufs_rx_lane(ufs, i)
 756                 ufshcd_dme_set(hba,
 757                         UIC_ARG_MIB_SEL(RX_SYNC_MASK_LENGTH, i), mask);
 758
 759         exynos_ufs_disable_ov_tm(hba);
 760 }
 761
 762 static int exynos_ufs_pre_pwr_mode(struct ufs_hba *hba,
 763                                 struct ufs_pa_layer_attr *dev_max_params,
 764                                 struct ufs_pa_layer_attr *dev_req_params)
 765 {
 766         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 767         struct phy *generic_phy = ufs->phy;
 768         struct ufs_host_params host_params;
 769         int ret;
 770
 771         if (!dev_req_params) {
 772                 pr_err("%s: incoming dev_req_params is NULL\n", __func__);
 773                 ret = -EINVAL;
 774                 goto out;
 775         }
 776
 777         ufshcd_init_host_params(&host_params);
 778
 779         ret = ufshcd_negotiate_pwr_params(&host_params, dev_max_params, dev_req_params);
 780         if (ret) {
 781                 pr_err("%s: failed to determine capabilities\n", __func__);
 782                 goto out;
 783         }
 784
 785         if (ufs->drv_data->pre_pwr_change)
 786                 ufs->drv_data->pre_pwr_change(ufs, dev_req_params);
 787
 788         if (ufshcd_is_hs_mode(dev_req_params)) {
 789                 exynos_ufs_config_sync_pattern_mask(ufs, dev_req_params);
 790
 791                 switch (dev_req_params->hs_rate) {
 792                 case PA_HS_MODE_A:
 793                 case PA_HS_MODE_B:
 794                         phy_calibrate(generic_phy);
 795                         break;
 796                 }
 797         }
 798
 799         /* setting for three timeout values for traffic class #0 */
 800         ufshcd_dme_set(hba, UIC_ARG_MIB(DL_FC0PROTTIMEOUTVAL), 8064);
 801         ufshcd_dme_set(hba, UIC_ARG_MIB(DL_TC0REPLAYTIMEOUTVAL), 28224);
 802         ufshcd_dme_set(hba, UIC_ARG_MIB(DL_AFC0REQTIMEOUTVAL), 20160);
 803
 804         return 0;
 805 out:
 806         return ret;
 807 }
 808
 809 #define PWR_MODE_STR_LEN        64
 810 static int exynos_ufs_post_pwr_mode(struct ufs_hba *hba,
 811                                 struct ufs_pa_layer_attr *pwr_req)
 812 {
 813         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 814         struct phy *generic_phy = ufs->phy;
 815         int gear = max_t(u32, pwr_req->gear_rx, pwr_req->gear_tx);
 816         int lanes = max_t(u32, pwr_req->lane_rx, pwr_req->lane_tx);
 817         char pwr_str[PWR_MODE_STR_LEN] = "";
 818
 819         /* let default be PWM Gear 1, Lane 1 */
 820         if (!gear)
 821                 gear = 1;
 822
 823         if (!lanes)
 824                 lanes = 1;
 825
 826         if (ufs->drv_data->post_pwr_change)
 827                 ufs->drv_data->post_pwr_change(ufs, pwr_req);
 828
 829         if ((ufshcd_is_hs_mode(pwr_req))) {
 830                 switch (pwr_req->hs_rate) {
 831                 case PA_HS_MODE_A:
 832                 case PA_HS_MODE_B:
 833                         phy_calibrate(generic_phy);
 834                         break;
 835                 }
 836
 837                 snprintf(pwr_str, PWR_MODE_STR_LEN, "%s series_%s G_%d L_%d",
 838                         "FAST", pwr_req->hs_rate == PA_HS_MODE_A ? "A" : "B",
 839                         gear, lanes);
 840         } else {
 841                 snprintf(pwr_str, PWR_MODE_STR_LEN, "%s G_%d L_%d",
 842                         "SLOW", gear, lanes);
 843         }
 844
 845         dev_info(hba->dev, "Power mode changed to : %s\n", pwr_str);
 846
 847         return 0;
 848 }
 849
 850 static void exynos_ufs_specify_nexus_t_xfer_req(struct ufs_hba *hba,
 851                                                 int tag, bool is_scsi_cmd)
 852 {
 853         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 854         u32 type;
 855
 856         type =  hci_readl(ufs, HCI_UTRL_NEXUS_TYPE);
 857
 858         if (is_scsi_cmd)
 859                 hci_writel(ufs, type | (1 << tag), HCI_UTRL_NEXUS_TYPE);
 860         else
 861                 hci_writel(ufs, type & ~(1 << tag), HCI_UTRL_NEXUS_TYPE);
 862 }
 863
 864 static void exynos_ufs_specify_nexus_t_tm_req(struct ufs_hba *hba,
 865                                                 int tag, u8 func)
 866 {
 867         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 868         u32 type;
 869
 870         type =  hci_readl(ufs, HCI_UTMRL_NEXUS_TYPE);
 871
 872         switch (func) {
 873         case UFS_ABORT_TASK:
 874         case UFS_QUERY_TASK:
 875                 hci_writel(ufs, type | (1 << tag), HCI_UTMRL_NEXUS_TYPE);
 876                 break;
 877         case UFS_ABORT_TASK_SET:
 878         case UFS_CLEAR_TASK_SET:
 879         case UFS_LOGICAL_RESET:
 880         case UFS_QUERY_TASK_SET:
 881                 hci_writel(ufs, type & ~(1 << tag), HCI_UTMRL_NEXUS_TYPE);
 882                 break;
 883         }
 884 }
 885
 886 static int exynos_ufs_phy_init(struct exynos_ufs *ufs)
 887 {
 888         struct ufs_hba *hba = ufs->hba;
 889         struct phy *generic_phy = ufs->phy;
 890         int ret = 0;
 891
 892         if (ufs->avail_ln_rx == 0 || ufs->avail_ln_tx == 0) {
 893                 ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILRXDATALANES),
 894                         &ufs->avail_ln_rx);
 895                 ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILTXDATALANES),
 896                         &ufs->avail_ln_tx);
 897                 WARN(ufs->avail_ln_rx != ufs->avail_ln_tx,
 898                         "available data lane is not equal(rx:%d, tx:%d)\n",
 899                         ufs->avail_ln_rx, ufs->avail_ln_tx);
 900         }
 901
 902         phy_set_bus_width(generic_phy, ufs->avail_ln_rx);
 903         ret = phy_init(generic_phy);
 904         if (ret) {
 905                 dev_err(hba->dev, "%s: phy init failed, ret = %d\n",
 906                         __func__, ret);
 907                 return ret;
 908         }
 909
 910         ret = phy_power_on(generic_phy);
 911         if (ret)
 912                 goto out_exit_phy;
 913
 914         return 0;
 915
 916 out_exit_phy:
 917         phy_exit(generic_phy);
 918
 919         return ret;
 920 }
 921
 922 static void exynos_ufs_config_unipro(struct exynos_ufs *ufs)
 923 {
 924         struct ufs_hba *hba = ufs->hba;
 925
 926         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_CLK_PERIOD),
 927                 DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
 928         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTRAILINGCLOCKS),
 929                         ufs->drv_data->uic_attr->tx_trailingclks);
 930         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE),
 931                         ufs->drv_data->uic_attr->pa_dbg_option_suite);
 932 }
 933
 934 static void exynos_ufs_config_intr(struct exynos_ufs *ufs, u32 errs, u8 index)
 935 {
 936         switch (index) {
 937         case UNIPRO_L1_5:
 938                 hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_PA_LAYER);
 939                 break;
 940         case UNIPRO_L2:
 941                 hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DL_LAYER);
 942                 break;
 943         case UNIPRO_L3:
 944                 hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_N_LAYER);
 945                 break;
 946         case UNIPRO_L4:
 947                 hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_T_LAYER);
 948                 break;
 949         case UNIPRO_DME:
 950                 hci_writel(ufs, DFES_ERR_EN | errs, HCI_ERR_EN_DME_LAYER);
 951                 break;
 952         }
 953 }
 954
 955 static int exynos_ufs_setup_clocks(struct ufs_hba *hba, bool on,
 956                                    enum ufs_notify_change_status status)
 957 {
 958         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 959
 960         if (!ufs)
 961                 return 0;
 962
 963         if (on && status == PRE_CHANGE) {
 964                 if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
 965                         exynos_ufs_disable_auto_ctrl_hcc(ufs);
 966                 exynos_ufs_ungate_clks(ufs);
 967         } else if (!on && status == POST_CHANGE) {
 968                 exynos_ufs_gate_clks(ufs);
 969                 if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
 970                         exynos_ufs_enable_auto_ctrl_hcc(ufs);
 971         }
 972
 973         return 0;
 974 }
 975
 976 static int exynos_ufs_pre_link(struct ufs_hba *hba)
 977 {
 978         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
 979
 980         /* hci */
 981         exynos_ufs_config_intr(ufs, DFES_DEF_L2_ERRS, UNIPRO_L2);
 982         exynos_ufs_config_intr(ufs, DFES_DEF_L3_ERRS, UNIPRO_L3);
 983         exynos_ufs_config_intr(ufs, DFES_DEF_L4_ERRS, UNIPRO_L4);
 984         exynos_ufs_set_unipro_pclk_div(ufs);
 985
 986         /* unipro */
 987         exynos_ufs_config_unipro(ufs);
 988
 989         /* m-phy */
 990         exynos_ufs_phy_init(ufs);
 991         if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR)) {
 992                 exynos_ufs_config_phy_time_attr(ufs);
 993                 exynos_ufs_config_phy_cap_attr(ufs);
 994         }
 995
 996         exynos_ufs_setup_clocks(hba, true, PRE_CHANGE);
 997
 998         if (ufs->drv_data->pre_link)
 999                 ufs->drv_data->pre_link(ufs);
1000
1001         return 0;
1002 }
1003
1004 static void exynos_ufs_fit_aggr_timeout(struct exynos_ufs *ufs)
1005 {
1006         u32 val;
1007
1008         val = exynos_ufs_calc_time_cntr(ufs, IATOVAL_NSEC / CNTR_DIV_VAL);
1009         hci_writel(ufs, val & CNT_VAL_1US_MASK, HCI_1US_TO_CNT_VAL);
1010 }
1011
1012 static int exynos_ufs_post_link(struct ufs_hba *hba)
1013 {
1014         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1015         struct phy *generic_phy = ufs->phy;
1016         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
1017
1018         exynos_ufs_establish_connt(ufs);
1019         exynos_ufs_fit_aggr_timeout(ufs);
1020
1021         hci_writel(ufs, 0xa, HCI_DATA_REORDER);
1022         hci_writel(ufs, PRDT_SET_SIZE(12), HCI_TXPRDT_ENTRY_SIZE);
1023         hci_writel(ufs, PRDT_SET_SIZE(12), HCI_RXPRDT_ENTRY_SIZE);
1024         hci_writel(ufs, (1 << hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE);
1025         hci_writel(ufs, (1 << hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE);
1026         hci_writel(ufs, 0xf, HCI_AXIDMA_RWDATA_BURST_LEN);
1027
1028         if (ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB)
1029                 ufshcd_dme_set(hba,
1030                         UIC_ARG_MIB(T_DBG_SKIP_INIT_HIBERN8_EXIT), true);
1031
1032         if (attr->pa_granularity) {
1033                 exynos_ufs_enable_dbg_mode(hba);
1034                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_GRANULARITY),
1035                                 attr->pa_granularity);
1036                 exynos_ufs_disable_dbg_mode(hba);
1037
1038                 if (attr->pa_tactivate)
1039                         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
1040                                         attr->pa_tactivate);
1041                 if (attr->pa_hibern8time &&
1042                     !(ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER))
1043                         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
1044                                         attr->pa_hibern8time);
1045         }
1046
1047         if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
1048                 if (!attr->pa_granularity)
1049                         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_GRANULARITY),
1050                                         &attr->pa_granularity);
1051                 if (!attr->pa_hibern8time)
1052                         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
1053                                         &attr->pa_hibern8time);
1054                 /*
1055                  * not wait for HIBERN8 time to exit hibernation
1056                  */
1057                 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 0);
1058
1059                 if (attr->pa_granularity < 1 || attr->pa_granularity > 6) {
1060                         /* Valid range for granularity: 1 ~ 6 */
1061                         dev_warn(hba->dev,
1062                                 "%s: pa_granularity %d is invalid, assuming backwards compatibility\n",
1063                                 __func__,
1064                                 attr->pa_granularity);
1065                         attr->pa_granularity = 6;
1066                 }
1067         }
1068
1069         phy_calibrate(generic_phy);
1070
1071         if (ufs->drv_data->post_link)
1072                 ufs->drv_data->post_link(ufs);
1073
1074         return 0;
1075 }
1076
1077 static int exynos_ufs_parse_dt(struct device *dev, struct exynos_ufs *ufs)
1078 {
1079         struct device_node *np = dev->of_node;
1080         struct exynos_ufs_uic_attr *attr;
1081         int ret = 0;
1082
1083         ufs->drv_data = device_get_match_data(dev);
1084
1085         if (ufs->drv_data && ufs->drv_data->uic_attr) {
1086                 attr = ufs->drv_data->uic_attr;
1087         } else {
1088                 dev_err(dev, "failed to get uic attributes\n");
1089                 ret = -EINVAL;
1090                 goto out;
1091         }
1092
1093         ufs->sysreg = syscon_regmap_lookup_by_phandle(np, "samsung,sysreg");
1094         if (IS_ERR(ufs->sysreg))
1095                 ufs->sysreg = NULL;
1096         else {
1097                 if (of_property_read_u32_index(np, "samsung,sysreg", 1,
1098                                                &ufs->shareability_reg_offset)) {
1099                         dev_warn(dev, "can't get an offset from sysreg. Set to default value\n");
1100                         ufs->shareability_reg_offset = UFS_SHAREABILITY_OFFSET;
1101                 }
1102         }
1103
1104         ufs->pclk_avail_min = PCLK_AVAIL_MIN;
1105         ufs->pclk_avail_max = PCLK_AVAIL_MAX;
1106
1107         attr->rx_adv_fine_gran_sup_en = RX_ADV_FINE_GRAN_SUP_EN;
1108         attr->rx_adv_fine_gran_step = RX_ADV_FINE_GRAN_STEP_VAL;
1109         attr->rx_adv_min_actv_time_cap = RX_ADV_MIN_ACTV_TIME_CAP;
1110         attr->pa_granularity = PA_GRANULARITY_VAL;
1111         attr->pa_tactivate = PA_TACTIVATE_VAL;
1112         attr->pa_hibern8time = PA_HIBERN8TIME_VAL;
1113
1114 out:
1115         return ret;
1116 }
1117
1118 static inline void exynos_ufs_priv_init(struct ufs_hba *hba,
1119                                         struct exynos_ufs *ufs)
1120 {
1121         ufs->hba = hba;
1122         ufs->opts = ufs->drv_data->opts;
1123         ufs->rx_sel_idx = PA_MAXDATALANES;
1124         if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX)
1125                 ufs->rx_sel_idx = 0;
1126         hba->priv = (void *)ufs;
1127         hba->quirks = ufs->drv_data->quirks;
1128 }
1129
1130 static int exynos_ufs_init(struct ufs_hba *hba)
1131 {
1132         struct device *dev = hba->dev;
1133         struct platform_device *pdev = to_platform_device(dev);
1134         struct exynos_ufs *ufs;
1135         int ret;
1136
1137         ufs = devm_kzalloc(dev, sizeof(*ufs), GFP_KERNEL);
1138         if (!ufs)
1139                 return -ENOMEM;
1140
1141         /* exynos-specific hci */
1142         ufs->reg_hci = devm_platform_ioremap_resource_byname(pdev, "vs_hci");
1143         if (IS_ERR(ufs->reg_hci)) {
1144                 dev_err(dev, "cannot ioremap for hci vendor register\n");
1145                 return PTR_ERR(ufs->reg_hci);
1146         }
1147
1148         /* unipro */
1149         ufs->reg_unipro = devm_platform_ioremap_resource_byname(pdev, "unipro");
1150         if (IS_ERR(ufs->reg_unipro)) {
1151                 dev_err(dev, "cannot ioremap for unipro register\n");
1152                 return PTR_ERR(ufs->reg_unipro);
1153         }
1154
1155         /* ufs protector */
1156         ufs->reg_ufsp = devm_platform_ioremap_resource_byname(pdev, "ufsp");
1157         if (IS_ERR(ufs->reg_ufsp)) {
1158                 dev_err(dev, "cannot ioremap for ufs protector register\n");
1159                 return PTR_ERR(ufs->reg_ufsp);
1160         }
1161
1162         ret = exynos_ufs_parse_dt(dev, ufs);
1163         if (ret) {
1164                 dev_err(dev, "failed to get dt info.\n");
1165                 goto out;
1166         }
1167
1168         ufs->phy = devm_phy_get(dev, "ufs-phy");
1169         if (IS_ERR(ufs->phy)) {
1170                 ret = PTR_ERR(ufs->phy);
1171                 dev_err(dev, "failed to get ufs-phy\n");
1172                 goto out;
1173         }
1174
1175         exynos_ufs_priv_init(hba, ufs);
1176
1177         if (ufs->drv_data->drv_init) {
1178                 ret = ufs->drv_data->drv_init(dev, ufs);
1179                 if (ret) {
1180                         dev_err(dev, "failed to init drv-data\n");
1181                         goto out;
1182                 }
1183         }
1184
1185         ret = exynos_ufs_get_clk_info(ufs);
1186         if (ret)
1187                 goto out;
1188         exynos_ufs_specify_phy_time_attr(ufs);
1189         exynos_ufs_config_smu(ufs);
1190         return 0;
1191
1192 out:
1193         hba->priv = NULL;
1194         return ret;
1195 }
1196
1197 static int exynos_ufs_host_reset(struct ufs_hba *hba)
1198 {
1199         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1200         unsigned long timeout = jiffies + msecs_to_jiffies(1);
1201         u32 val;
1202         int ret = 0;
1203
1204         exynos_ufs_disable_auto_ctrl_hcc_save(ufs, &val);
1205
1206         hci_writel(ufs, UFS_SW_RST_MASK, HCI_SW_RST);
1207
1208         do {
1209                 if (!(hci_readl(ufs, HCI_SW_RST) & UFS_SW_RST_MASK))
1210                         goto out;
1211         } while (time_before(jiffies, timeout));
1212
1213         dev_err(hba->dev, "timeout host sw-reset\n");
1214         ret = -ETIMEDOUT;
1215
1216 out:
1217         exynos_ufs_auto_ctrl_hcc_restore(ufs, &val);
1218         return ret;
1219 }
1220
1221 static void exynos_ufs_dev_hw_reset(struct ufs_hba *hba)
1222 {
1223         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1224
1225         hci_writel(ufs, 0 << 0, HCI_GPIO_OUT);
1226         udelay(5);
1227         hci_writel(ufs, 1 << 0, HCI_GPIO_OUT);
1228 }
1229
1230 static void exynos_ufs_pre_hibern8(struct ufs_hba *hba, u8 enter)
1231 {
1232         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1233         struct exynos_ufs_uic_attr *attr = ufs->drv_data->uic_attr;
1234
1235         if (!enter) {
1236                 if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
1237                         exynos_ufs_disable_auto_ctrl_hcc(ufs);
1238                 exynos_ufs_ungate_clks(ufs);
1239
1240                 if (ufs->opts & EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER) {
1241                         static const unsigned int granularity_tbl[] = {
1242                                 1, 4, 8, 16, 32, 100
1243                         };
1244                         int h8_time = attr->pa_hibern8time *
1245                                 granularity_tbl[attr->pa_granularity - 1];
1246                         unsigned long us;
1247                         s64 delta;
1248
1249                         do {
1250                                 delta = h8_time - ktime_us_delta(ktime_get(),
1251                                                         ufs->entry_hibern8_t);
1252                                 if (delta <= 0)
1253                                         break;
1254
1255                                 us = min_t(s64, delta, USEC_PER_MSEC);
1256                                 if (us >= 10)
1257                                         usleep_range(us, us + 10);
1258                         } while (1);
1259                 }
1260         }
1261 }
1262
1263 static void exynos_ufs_post_hibern8(struct ufs_hba *hba, u8 enter)
1264 {
1265         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1266
1267         if (!enter) {
1268                 u32 cur_mode = 0;
1269                 u32 pwrmode;
1270
1271                 if (ufshcd_is_hs_mode(&ufs->dev_req_params))
1272                         pwrmode = FAST_MODE;
1273                 else
1274                         pwrmode = SLOW_MODE;
1275
1276                 ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PWRMODE), &cur_mode);
1277                 if (cur_mode != (pwrmode << 4 | pwrmode)) {
1278                         dev_warn(hba->dev, "%s: power mode change\n", __func__);
1279                         hba->pwr_info.pwr_rx = (cur_mode >> 4) & 0xf;
1280                         hba->pwr_info.pwr_tx = cur_mode & 0xf;
1281                         ufshcd_config_pwr_mode(hba, &hba->max_pwr_info.info);
1282                 }
1283
1284                 if (!(ufs->opts & EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB))
1285                         exynos_ufs_establish_connt(ufs);
1286         } else {
1287                 ufs->entry_hibern8_t = ktime_get();
1288                 exynos_ufs_gate_clks(ufs);
1289                 if (ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL)
1290                         exynos_ufs_enable_auto_ctrl_hcc(ufs);
1291         }
1292 }
1293
1294 static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba,
1295                                         enum ufs_notify_change_status status)
1296 {
1297         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1298         int ret = 0;
1299
1300         switch (status) {
1301         case PRE_CHANGE:
1302                 /*
1303                  * The maximum segment size must be set after scsi_host_alloc()
1304                  * has been called and before LUN scanning starts
1305                  * (ufshcd_async_scan()). Note: this callback may also be called
1306                  * from other functions than ufshcd_init().
1307                  */
1308                 hba->host->max_segment_size = SZ_4K;
1309
1310                 if (ufs->drv_data->pre_hce_enable) {
1311                         ret = ufs->drv_data->pre_hce_enable(ufs);
1312                         if (ret)
1313                                 return ret;
1314                 }
1315
1316                 ret = exynos_ufs_host_reset(hba);
1317                 if (ret)
1318                         return ret;
1319                 exynos_ufs_dev_hw_reset(hba);
1320                 break;
1321         case POST_CHANGE:
1322                 exynos_ufs_calc_pwm_clk_div(ufs);
1323                 if (!(ufs->opts & EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL))
1324                         exynos_ufs_enable_auto_ctrl_hcc(ufs);
1325
1326                 if (ufs->drv_data->post_hce_enable)
1327                         ret = ufs->drv_data->post_hce_enable(ufs);
1328
1329                 break;
1330         }
1331
1332         return ret;
1333 }
1334
1335 static int exynos_ufs_link_startup_notify(struct ufs_hba *hba,
1336                                           enum ufs_notify_change_status status)
1337 {
1338         int ret = 0;
1339
1340         switch (status) {
1341         case PRE_CHANGE:
1342                 ret = exynos_ufs_pre_link(hba);
1343                 break;
1344         case POST_CHANGE:
1345                 ret = exynos_ufs_post_link(hba);
1346                 break;
1347         }
1348
1349         return ret;
1350 }
1351
1352 static int exynos_ufs_pwr_change_notify(struct ufs_hba *hba,
1353                                 enum ufs_notify_change_status status,
1354                                 struct ufs_pa_layer_attr *dev_max_params,
1355                                 struct ufs_pa_layer_attr *dev_req_params)
1356 {
1357         int ret = 0;
1358
1359         switch (status) {
1360         case PRE_CHANGE:
1361                 ret = exynos_ufs_pre_pwr_mode(hba, dev_max_params,
1362                                               dev_req_params);
1363                 break;
1364         case POST_CHANGE:
1365                 ret = exynos_ufs_post_pwr_mode(hba, dev_req_params);
1366                 break;
1367         }
1368
1369         return ret;
1370 }
1371
1372 static void exynos_ufs_hibern8_notify(struct ufs_hba *hba,
1373                                      enum uic_cmd_dme enter,
1374                                      enum ufs_notify_change_status notify)
1375 {
1376         switch ((u8)notify) {
1377         case PRE_CHANGE:
1378                 exynos_ufs_pre_hibern8(hba, enter);
1379                 break;
1380         case POST_CHANGE:
1381                 exynos_ufs_post_hibern8(hba, enter);
1382                 break;
1383         }
1384 }
1385
1386 static int exynos_ufs_suspend(struct ufs_hba *hba, enum ufs_pm_op pm_op,
1387         enum ufs_notify_change_status status)
1388 {
1389         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1390
1391         if (status == PRE_CHANGE)
1392                 return 0;
1393
1394         if (!ufshcd_is_link_active(hba))
1395                 phy_power_off(ufs->phy);
1396
1397         return 0;
1398 }
1399
1400 static int exynos_ufs_resume(struct ufs_hba *hba, enum ufs_pm_op pm_op)
1401 {
1402         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1403
1404         if (!ufshcd_is_link_active(hba))
1405                 phy_power_on(ufs->phy);
1406
1407         exynos_ufs_config_smu(ufs);
1408
1409         return 0;
1410 }
1411
1412 static int exynosauto_ufs_vh_link_startup_notify(struct ufs_hba *hba,
1413                                                  enum ufs_notify_change_status status)
1414 {
1415         if (status == POST_CHANGE) {
1416                 ufshcd_set_link_active(hba);
1417                 ufshcd_set_ufs_dev_active(hba);
1418         }
1419
1420         return 0;
1421 }
1422
1423 static int exynosauto_ufs_vh_wait_ph_ready(struct ufs_hba *hba)
1424 {
1425         u32 mbox;
1426         ktime_t start, stop;
1427
1428         start = ktime_get();
1429         stop = ktime_add(start, ms_to_ktime(PH_READY_TIMEOUT_MS));
1430
1431         do {
1432                 mbox = ufshcd_readl(hba, PH2VH_MBOX);
1433                 /* TODO: Mailbox message protocols between the PH and VHs are
1434                  * not implemented yet. This will be supported later
1435                  */
1436                 if ((mbox & MH_MSG_MASK) == MH_MSG_PH_READY)
1437                         return 0;
1438
1439                 usleep_range(40, 50);
1440         } while (ktime_before(ktime_get(), stop));
1441
1442         return -ETIME;
1443 }
1444
1445 static int exynosauto_ufs_vh_init(struct ufs_hba *hba)
1446 {
1447         struct device *dev = hba->dev;
1448         struct platform_device *pdev = to_platform_device(dev);
1449         struct exynos_ufs *ufs;
1450         int ret;
1451
1452         ufs = devm_kzalloc(dev, sizeof(*ufs), GFP_KERNEL);
1453         if (!ufs)
1454                 return -ENOMEM;
1455
1456         /* exynos-specific hci */
1457         ufs->reg_hci = devm_platform_ioremap_resource_byname(pdev, "vs_hci");
1458         if (IS_ERR(ufs->reg_hci)) {
1459                 dev_err(dev, "cannot ioremap for hci vendor register\n");
1460                 return PTR_ERR(ufs->reg_hci);
1461         }
1462
1463         ret = exynosauto_ufs_vh_wait_ph_ready(hba);
1464         if (ret)
1465                 return ret;
1466
1467         ufs->drv_data = device_get_match_data(dev);
1468         if (!ufs->drv_data)
1469                 return -ENODEV;
1470
1471         exynos_ufs_priv_init(hba, ufs);
1472
1473         return 0;
1474 }
1475
1476 static int fsd_ufs_pre_link(struct exynos_ufs *ufs)
1477 {
1478         int i;
1479         struct ufs_hba *hba = ufs->hba;
1480
1481         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_CLK_PERIOD),
1482                        DIV_ROUND_UP(NSEC_PER_SEC,  ufs->mclk_rate));
1483         ufshcd_dme_set(hba, UIC_ARG_MIB(0x201), 0x12);
1484         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x40);
1485
1486         for_each_ufs_tx_lane(ufs, i) {
1487                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0xAA, i),
1488                                DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
1489                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x8F, i), 0x3F);
1490         }
1491
1492         for_each_ufs_rx_lane(ufs, i) {
1493                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x12, i),
1494                                DIV_ROUND_UP(NSEC_PER_SEC, ufs->mclk_rate));
1495                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x5C, i), 0x38);
1496                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x0F, i), 0x0);
1497                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x65, i), 0x1);
1498                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x69, i), 0x1);
1499                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x21, i), 0x0);
1500                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x22, i), 0x0);
1501         }
1502
1503         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x0);
1504         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_AUTOMODE_THLD), 0x4E20);
1505         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OPTION_SUITE), 0x2e820183);
1506         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0x0);
1507
1508         exynos_ufs_establish_connt(ufs);
1509
1510         return 0;
1511 }
1512
1513 static void exynos_ufs_config_scsi_dev(struct scsi_device *sdev)
1514 {
1515         blk_queue_update_dma_alignment(sdev->request_queue, SZ_4K - 1);
1516 }
1517
1518 static int fsd_ufs_post_link(struct exynos_ufs *ufs)
1519 {
1520         int i;
1521         struct ufs_hba *hba = ufs->hba;
1522         u32 hw_cap_min_tactivate;
1523         u32 peer_rx_min_actv_time_cap;
1524         u32 max_rx_hibern8_time_cap;
1525
1526         ufshcd_dme_get(hba, UIC_ARG_MIB_SEL(0x8F, 4),
1527                         &hw_cap_min_tactivate); /* HW Capability of MIN_TACTIVATE */
1528         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_TACTIVATE),
1529                         &peer_rx_min_actv_time_cap);    /* PA_TActivate */
1530         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_HIBERN8TIME),
1531                         &max_rx_hibern8_time_cap);      /* PA_Hibern8Time */
1532
1533         if (peer_rx_min_actv_time_cap >= hw_cap_min_tactivate)
1534                 ufshcd_dme_peer_set(hba, UIC_ARG_MIB(PA_TACTIVATE),
1535                                         peer_rx_min_actv_time_cap + 1);
1536         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), max_rx_hibern8_time_cap + 1);
1537
1538         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), 0x01);
1539         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_SAVECONFIGTIME), 0xFA);
1540         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), 0x00);
1541
1542         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x40);
1543
1544         for_each_ufs_rx_lane(ufs, i) {
1545                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x35, i), 0x05);
1546                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x73, i), 0x01);
1547                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x41, i), 0x02);
1548                 ufshcd_dme_set(hba, UIC_ARG_MIB_SEL(0x42, i), 0xAC);
1549         }
1550
1551         ufshcd_dme_set(hba, UIC_ARG_MIB(0x200), 0x0);
1552
1553         return 0;
1554 }
1555
1556 static int fsd_ufs_pre_pwr_change(struct exynos_ufs *ufs,
1557                                         struct ufs_pa_layer_attr *pwr)
1558 {
1559         struct ufs_hba *hba = ufs->hba;
1560
1561         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TXTERMINATION), 0x1);
1562         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_RXTERMINATION), 0x1);
1563         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA0), 12000);
1564         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA1), 32000);
1565         ufshcd_dme_set(hba, UIC_ARG_MIB(PA_PWRMODEUSERDATA2), 16000);
1566
1567         unipro_writel(ufs, 12000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER0);
1568         unipro_writel(ufs, 32000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER1);
1569         unipro_writel(ufs, 16000, UNIPRO_DME_POWERMODE_REQ_REMOTEL2TIMER2);
1570
1571         return 0;
1572 }
1573
1574 static const struct ufs_hba_variant_ops ufs_hba_exynos_ops = {
1575         .name                           = "exynos_ufs",
1576         .init                           = exynos_ufs_init,
1577         .hce_enable_notify              = exynos_ufs_hce_enable_notify,
1578         .link_startup_notify            = exynos_ufs_link_startup_notify,
1579         .pwr_change_notify              = exynos_ufs_pwr_change_notify,
1580         .setup_clocks                   = exynos_ufs_setup_clocks,
1581         .setup_xfer_req                 = exynos_ufs_specify_nexus_t_xfer_req,
1582         .setup_task_mgmt                = exynos_ufs_specify_nexus_t_tm_req,
1583         .hibern8_notify                 = exynos_ufs_hibern8_notify,
1584         .suspend                        = exynos_ufs_suspend,
1585         .resume                         = exynos_ufs_resume,
1586         .config_scsi_dev                = exynos_ufs_config_scsi_dev,
1587 };
1588
1589 static struct ufs_hba_variant_ops ufs_hba_exynosauto_vh_ops = {
1590         .name                           = "exynosauto_ufs_vh",
1591         .init                           = exynosauto_ufs_vh_init,
1592         .link_startup_notify            = exynosauto_ufs_vh_link_startup_notify,
1593 };
1594
1595 static int exynos_ufs_probe(struct platform_device *pdev)
1596 {
1597         int err;
1598         struct device *dev = &pdev->dev;
1599         const struct ufs_hba_variant_ops *vops = &ufs_hba_exynos_ops;
1600         const struct exynos_ufs_drv_data *drv_data =
1601                 device_get_match_data(dev);
1602
1603         if (drv_data && drv_data->vops)
1604                 vops = drv_data->vops;
1605
1606         err = ufshcd_pltfrm_init(pdev, vops);
1607         if (err)
1608                 dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
1609
1610         return err;
1611 }
1612
1613 static void exynos_ufs_remove(struct platform_device *pdev)
1614 {
1615         struct ufs_hba *hba =  platform_get_drvdata(pdev);
1616         struct exynos_ufs *ufs = ufshcd_get_variant(hba);
1617
1618         pm_runtime_get_sync(&(pdev)->dev);
1619         ufshcd_remove(hba);
1620
1621         phy_power_off(ufs->phy);
1622         phy_exit(ufs->phy);
1623 }
1624
1625 static struct exynos_ufs_uic_attr exynos7_uic_attr = {
1626         .tx_trailingclks                = 0x10,
1627         .tx_dif_p_nsec                  = 3000000,      /* unit: ns */
1628         .tx_dif_n_nsec                  = 1000000,      /* unit: ns */
1629         .tx_high_z_cnt_nsec             = 20000,        /* unit: ns */
1630         .tx_base_unit_nsec              = 100000,       /* unit: ns */
1631         .tx_gran_unit_nsec              = 4000,         /* unit: ns */
1632         .tx_sleep_cnt                   = 1000,         /* unit: ns */
1633         .tx_min_activatetime            = 0xa,
1634         .rx_filler_enable               = 0x2,
1635         .rx_dif_p_nsec                  = 1000000,      /* unit: ns */
1636         .rx_hibern8_wait_nsec           = 4000000,      /* unit: ns */
1637         .rx_base_unit_nsec              = 100000,       /* unit: ns */
1638         .rx_gran_unit_nsec              = 4000,         /* unit: ns */
1639         .rx_sleep_cnt                   = 1280,         /* unit: ns */
1640         .rx_stall_cnt                   = 320,          /* unit: ns */
1641         .rx_hs_g1_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1642         .rx_hs_g2_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1643         .rx_hs_g3_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1644         .rx_hs_g1_prep_sync_len_cap     = PREP_LEN(0xf),
1645         .rx_hs_g2_prep_sync_len_cap     = PREP_LEN(0xf),
1646         .rx_hs_g3_prep_sync_len_cap     = PREP_LEN(0xf),
1647         .pa_dbg_option_suite            = 0x30103,
1648 };
1649
1650 static const struct exynos_ufs_drv_data exynosauto_ufs_drvs = {
1651         .uic_attr               = &exynos7_uic_attr,
1652         .quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
1653                                   UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR |
1654                                   UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
1655                                   UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING,
1656         .opts                   = EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
1657                                   EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
1658                                   EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
1659         .drv_init               = exynosauto_ufs_drv_init,
1660         .post_hce_enable        = exynosauto_ufs_post_hce_enable,
1661         .pre_link               = exynosauto_ufs_pre_link,
1662         .pre_pwr_change         = exynosauto_ufs_pre_pwr_change,
1663         .post_pwr_change        = exynosauto_ufs_post_pwr_change,
1664 };
1665
1666 static const struct exynos_ufs_drv_data exynosauto_ufs_vh_drvs = {
1667         .vops                   = &ufs_hba_exynosauto_vh_ops,
1668         .quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
1669                                   UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR |
1670                                   UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
1671                                   UFSHCI_QUIRK_BROKEN_HCE |
1672                                   UFSHCD_QUIRK_BROKEN_UIC_CMD |
1673                                   UFSHCD_QUIRK_SKIP_PH_CONFIGURATION |
1674                                   UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING,
1675         .opts                   = EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
1676 };
1677
1678 static const struct exynos_ufs_drv_data exynos_ufs_drvs = {
1679         .uic_attr               = &exynos7_uic_attr,
1680         .quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
1681                                   UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
1682                                   UFSHCI_QUIRK_BROKEN_HCE |
1683                                   UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR |
1684                                   UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
1685                                   UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL |
1686                                   UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING,
1687         .opts                   = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
1688                                   EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
1689                                   EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX |
1690                                   EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB |
1691                                   EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER,
1692         .drv_init               = exynos7_ufs_drv_init,
1693         .pre_link               = exynos7_ufs_pre_link,
1694         .post_link              = exynos7_ufs_post_link,
1695         .pre_pwr_change         = exynos7_ufs_pre_pwr_change,
1696         .post_pwr_change        = exynos7_ufs_post_pwr_change,
1697 };
1698
1699 static struct exynos_ufs_uic_attr fsd_uic_attr = {
1700         .tx_trailingclks                = 0x10,
1701         .tx_dif_p_nsec                  = 3000000,      /* unit: ns */
1702         .tx_dif_n_nsec                  = 1000000,      /* unit: ns */
1703         .tx_high_z_cnt_nsec             = 20000,        /* unit: ns */
1704         .tx_base_unit_nsec              = 100000,       /* unit: ns */
1705         .tx_gran_unit_nsec              = 4000,         /* unit: ns */
1706         .tx_sleep_cnt                   = 1000,         /* unit: ns */
1707         .tx_min_activatetime            = 0xa,
1708         .rx_filler_enable               = 0x2,
1709         .rx_dif_p_nsec                  = 1000000,      /* unit: ns */
1710         .rx_hibern8_wait_nsec           = 4000000,      /* unit: ns */
1711         .rx_base_unit_nsec              = 100000,       /* unit: ns */
1712         .rx_gran_unit_nsec              = 4000,         /* unit: ns */
1713         .rx_sleep_cnt                   = 1280,         /* unit: ns */
1714         .rx_stall_cnt                   = 320,          /* unit: ns */
1715         .rx_hs_g1_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1716         .rx_hs_g2_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1717         .rx_hs_g3_sync_len_cap          = SYNC_LEN_COARSE(0xf),
1718         .rx_hs_g1_prep_sync_len_cap     = PREP_LEN(0xf),
1719         .rx_hs_g2_prep_sync_len_cap     = PREP_LEN(0xf),
1720         .rx_hs_g3_prep_sync_len_cap     = PREP_LEN(0xf),
1721         .pa_dbg_option_suite            = 0x2E820183,
1722 };
1723
1724 static const struct exynos_ufs_drv_data fsd_ufs_drvs = {
1725         .uic_attr               = &fsd_uic_attr,
1726         .quirks                 = UFSHCD_QUIRK_PRDT_BYTE_GRAN |
1727                                   UFSHCI_QUIRK_BROKEN_REQ_LIST_CLR |
1728                                   UFSHCD_QUIRK_BROKEN_OCS_FATAL_ERROR |
1729                                   UFSHCD_QUIRK_SKIP_DEF_UNIPRO_TIMEOUT_SETTING |
1730                                   UFSHCI_QUIRK_SKIP_RESET_INTR_AGGR,
1731         .opts                   = EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL |
1732                                   EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL |
1733                                   EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR |
1734                                   EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX,
1735         .pre_link               = fsd_ufs_pre_link,
1736         .post_link              = fsd_ufs_post_link,
1737         .pre_pwr_change         = fsd_ufs_pre_pwr_change,
1738 };
1739
1740 static const struct of_device_id exynos_ufs_of_match[] = {
1741         { .compatible = "samsung,exynos7-ufs",
1742           .data       = &exynos_ufs_drvs },
1743         { .compatible = "samsung,exynosautov9-ufs",
1744           .data       = &exynosauto_ufs_drvs },
1745         { .compatible = "samsung,exynosautov9-ufs-vh",
1746           .data       = &exynosauto_ufs_vh_drvs },
1747         { .compatible = "tesla,fsd-ufs",
1748           .data       = &fsd_ufs_drvs },
1749         {},
1750 };
1751
1752 static const struct dev_pm_ops exynos_ufs_pm_ops = {
1753         SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
1754         SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
1755         .prepare         = ufshcd_suspend_prepare,
1756         .complete        = ufshcd_resume_complete,
1757 };
1758
1759 static struct platform_driver exynos_ufs_pltform = {
1760         .probe  = exynos_ufs_probe,
1761         .remove_new = exynos_ufs_remove,
1762         .driver = {
1763                 .name   = "exynos-ufshc",
1764                 .pm     = &exynos_ufs_pm_ops,
1765                 .of_match_table = exynos_ufs_of_match,
1766         },
1767 };
1768 module_platform_driver(exynos_ufs_pltform);
1769
1770 MODULE_AUTHOR("Alim Akhtar <alim.akhtar@samsung.com>");
1771 MODULE_AUTHOR("Seungwon Jeon  <essuuj@gmail.com>");
1772 MODULE_DESCRIPTION("Exynos UFS HCI Driver");
1773 MODULE_LICENSE("GPL v2");