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 * 7 */ 8 9 #ifndef _UFS_EXYNOS_H_ 10 #define _UFS_EXYNOS_H_ 11 12 /* 13 * UNIPRO registers 14 */ 15 #define UNIPRO_DBG_FORCE_DME_CTRL_STATE 0x150 16 17 /* 18 * MIBs for PA debug registers 19 */ 20 #define PA_DBG_CLK_PERIOD 0x9514 21 #define PA_DBG_TXPHY_CFGUPDT 0x9518 22 #define PA_DBG_RXPHY_CFGUPDT 0x9519 23 #define PA_DBG_MODE 0x9529 24 #define PA_DBG_SKIP_RESET_PHY 0x9539 25 #define PA_DBG_OV_TM 0x9540 26 #define PA_DBG_SKIP_LINE_RESET 0x9541 27 #define PA_DBG_LINE_RESET_REQ 0x9543 28 #define PA_DBG_OPTION_SUITE 0x9564 29 #define PA_DBG_OPTION_SUITE_DYN 0x9565 30 31 /* 32 * MIBs for Transport Layer debug registers 33 */ 34 #define T_DBG_SKIP_INIT_HIBERN8_EXIT 0xc001 35 36 /* 37 * Exynos MPHY attributes 38 */ 39 #define TX_LINERESET_N_VAL 0x0277 40 #define TX_LINERESET_N(v) (((v) >> 10) & 0xFF) 41 #define TX_LINERESET_P_VAL 0x027D 42 #define TX_LINERESET_P(v) (((v) >> 12) & 0xFF) 43 #define TX_OV_SLEEP_CNT_TIMER 0x028E 44 #define TX_OV_H8_ENTER_EN (1 << 7) 45 #define TX_OV_SLEEP_CNT(v) (((v) >> 5) & 0x7F) 46 #define TX_HIGH_Z_CNT_11_08 0x028C 47 #define TX_HIGH_Z_CNT_H(v) (((v) >> 8) & 0xF) 48 #define TX_HIGH_Z_CNT_07_00 0x028D 49 #define TX_HIGH_Z_CNT_L(v) ((v) & 0xFF) 50 #define TX_BASE_NVAL_07_00 0x0293 51 #define TX_BASE_NVAL_L(v) ((v) & 0xFF) 52 #define TX_BASE_NVAL_15_08 0x0294 53 #define TX_BASE_NVAL_H(v) (((v) >> 8) & 0xFF) 54 #define TX_GRAN_NVAL_07_00 0x0295 55 #define TX_GRAN_NVAL_L(v) ((v) & 0xFF) 56 #define TX_GRAN_NVAL_10_08 0x0296 57 #define TX_GRAN_NVAL_H(v) (((v) >> 8) & 0x3) 58 59 #define VND_TX_CLK_PRD 0xAA 60 #define VND_TX_CLK_PRD_EN 0xA9 61 #define VND_TX_LINERESET_PVALUE0 0xAD 62 #define VND_TX_LINERESET_PVALUE1 0xAC 63 #define VND_TX_LINERESET_PVALUE2 0xAB 64 65 #define TX_LINE_RESET_TIME 3200 66 67 #define VND_RX_CLK_PRD 0x12 68 #define VND_RX_CLK_PRD_EN 0x11 69 #define VND_RX_LINERESET_VALUE0 0x1D 70 #define VND_RX_LINERESET_VALUE1 0x1C 71 #define VND_RX_LINERESET_VALUE2 0x1B 72 73 #define RX_LINE_RESET_TIME 1000 74 75 #define RX_FILLER_ENABLE 0x0316 76 #define RX_FILLER_EN (1 << 1) 77 #define RX_LINERESET_VAL 0x0317 78 #define RX_LINERESET(v) (((v) >> 12) & 0xFF) 79 #define RX_LCC_IGNORE 0x0318 80 #define RX_SYNC_MASK_LENGTH 0x0321 81 #define RX_HIBERN8_WAIT_VAL_BIT_20_16 0x0331 82 #define RX_HIBERN8_WAIT_VAL_BIT_15_08 0x0332 83 #define RX_HIBERN8_WAIT_VAL_BIT_07_00 0x0333 84 #define RX_OV_SLEEP_CNT_TIMER 0x0340 85 #define RX_OV_SLEEP_CNT(v) (((v) >> 6) & 0x1F) 86 #define RX_OV_STALL_CNT_TIMER 0x0341 87 #define RX_OV_STALL_CNT(v) (((v) >> 4) & 0xFF) 88 #define RX_BASE_NVAL_07_00 0x0355 89 #define RX_BASE_NVAL_L(v) ((v) & 0xFF) 90 #define RX_BASE_NVAL_15_08 0x0354 91 #define RX_BASE_NVAL_H(v) (((v) >> 8) & 0xFF) 92 #define RX_GRAN_NVAL_07_00 0x0353 93 #define RX_GRAN_NVAL_L(v) ((v) & 0xFF) 94 #define RX_GRAN_NVAL_10_08 0x0352 95 #define RX_GRAN_NVAL_H(v) (((v) >> 8) & 0x3) 96 97 #define CMN_PWM_CLK_CTRL 0x0402 98 #define PWM_CLK_CTRL_MASK 0x3 99 100 #define IATOVAL_NSEC 20000 /* unit: ns */ 101 #define UNIPRO_PCLK_PERIOD(ufs) (NSEC_PER_SEC / ufs->pclk_rate) 102 103 struct exynos_ufs; 104 105 /* vendor specific pre-defined parameters */ 106 #define SLOW 1 107 #define FAST 2 108 109 #define RX_ADV_FINE_GRAN_SUP_EN 0x1 110 #define RX_ADV_FINE_GRAN_STEP_VAL 0x3 111 #define RX_ADV_MIN_ACTV_TIME_CAP 0x9 112 113 #define PA_GRANULARITY_VAL 0x6 114 #define PA_TACTIVATE_VAL 0x3 115 #define PA_HIBERN8TIME_VAL 0x20 116 117 #define PCLK_AVAIL_MIN 70000000 118 #define PCLK_AVAIL_MAX 167000000 119 120 struct exynos_ufs_uic_attr { 121 /* TX Attributes */ 122 unsigned int tx_trailingclks; 123 unsigned int tx_dif_p_nsec; 124 unsigned int tx_dif_n_nsec; 125 unsigned int tx_high_z_cnt_nsec; 126 unsigned int tx_base_unit_nsec; 127 unsigned int tx_gran_unit_nsec; 128 unsigned int tx_sleep_cnt; 129 unsigned int tx_min_activatetime; 130 /* RX Attributes */ 131 unsigned int rx_filler_enable; 132 unsigned int rx_dif_p_nsec; 133 unsigned int rx_hibern8_wait_nsec; 134 unsigned int rx_base_unit_nsec; 135 unsigned int rx_gran_unit_nsec; 136 unsigned int rx_sleep_cnt; 137 unsigned int rx_stall_cnt; 138 unsigned int rx_hs_g1_sync_len_cap; 139 unsigned int rx_hs_g2_sync_len_cap; 140 unsigned int rx_hs_g3_sync_len_cap; 141 unsigned int rx_hs_g1_prep_sync_len_cap; 142 unsigned int rx_hs_g2_prep_sync_len_cap; 143 unsigned int rx_hs_g3_prep_sync_len_cap; 144 /* Common Attributes */ 145 unsigned int cmn_pwm_clk_ctrl; 146 /* Internal Attributes */ 147 unsigned int pa_dbg_option_suite; 148 /* Changeable Attributes */ 149 unsigned int rx_adv_fine_gran_sup_en; 150 unsigned int rx_adv_fine_gran_step; 151 unsigned int rx_min_actv_time_cap; 152 unsigned int rx_hibern8_time_cap; 153 unsigned int rx_adv_min_actv_time_cap; 154 unsigned int rx_adv_hibern8_time_cap; 155 unsigned int pa_granularity; 156 unsigned int pa_tactivate; 157 unsigned int pa_hibern8time; 158 }; 159 160 struct exynos_ufs_drv_data { 161 const struct ufs_hba_variant_ops *vops; 162 struct exynos_ufs_uic_attr *uic_attr; 163 unsigned int quirks; 164 unsigned int opts; 165 /* SoC's specific operations */ 166 int (*drv_init)(struct device *dev, struct exynos_ufs *ufs); 167 int (*pre_link)(struct exynos_ufs *ufs); 168 int (*post_link)(struct exynos_ufs *ufs); 169 int (*pre_pwr_change)(struct exynos_ufs *ufs, 170 struct ufs_pa_layer_attr *pwr); 171 int (*post_pwr_change)(struct exynos_ufs *ufs, 172 struct ufs_pa_layer_attr *pwr); 173 int (*pre_hce_enable)(struct exynos_ufs *ufs); 174 int (*post_hce_enable)(struct exynos_ufs *ufs); 175 }; 176 177 struct ufs_phy_time_cfg { 178 u32 tx_linereset_p; 179 u32 tx_linereset_n; 180 u32 tx_high_z_cnt; 181 u32 tx_base_n_val; 182 u32 tx_gran_n_val; 183 u32 tx_sleep_cnt; 184 u32 rx_linereset; 185 u32 rx_hibern8_wait; 186 u32 rx_base_n_val; 187 u32 rx_gran_n_val; 188 u32 rx_sleep_cnt; 189 u32 rx_stall_cnt; 190 }; 191 192 struct exynos_ufs { 193 struct ufs_hba *hba; 194 struct phy *phy; 195 void __iomem *reg_hci; 196 void __iomem *reg_unipro; 197 void __iomem *reg_ufsp; 198 struct clk *clk_hci_core; 199 struct clk *clk_unipro_main; 200 struct clk *clk_apb; 201 u32 pclk_rate; 202 u32 pclk_div; 203 u32 pclk_avail_min; 204 u32 pclk_avail_max; 205 unsigned long mclk_rate; 206 int avail_ln_rx; 207 int avail_ln_tx; 208 int rx_sel_idx; 209 struct ufs_pa_layer_attr dev_req_params; 210 struct ufs_phy_time_cfg t_cfg; 211 ktime_t entry_hibern8_t; 212 const struct exynos_ufs_drv_data *drv_data; 213 struct regmap *sysreg; 214 u32 shareability_reg_offset; 215 216 u32 opts; 217 #define EXYNOS_UFS_OPT_HAS_APB_CLK_CTRL BIT(0) 218 #define EXYNOS_UFS_OPT_SKIP_CONNECTION_ESTAB BIT(1) 219 #define EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL BIT(2) 220 #define EXYNOS_UFS_OPT_BROKEN_RX_SEL_IDX BIT(3) 221 #define EXYNOS_UFS_OPT_USE_SW_HIBERN8_TIMER BIT(4) 222 #define EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR BIT(5) 223 }; 224 225 #define for_each_ufs_rx_lane(ufs, i) \ 226 for (i = (ufs)->rx_sel_idx; \ 227 i < (ufs)->rx_sel_idx + (ufs)->avail_ln_rx; i++) 228 #define for_each_ufs_tx_lane(ufs, i) \ 229 for (i = 0; i < (ufs)->avail_ln_tx; i++) 230 231 #define EXYNOS_UFS_MMIO_FUNC(name) \ 232 static inline void name##_writel(struct exynos_ufs *ufs, u32 val, u32 reg)\ 233 { \ 234 writel(val, ufs->reg_##name + reg); \ 235 } \ 236 \ 237 static inline u32 name##_readl(struct exynos_ufs *ufs, u32 reg) \ 238 { \ 239 return readl(ufs->reg_##name + reg); \ 240 } 241 242 EXYNOS_UFS_MMIO_FUNC(hci); 243 EXYNOS_UFS_MMIO_FUNC(unipro); 244 EXYNOS_UFS_MMIO_FUNC(ufsp); 245 #undef EXYNOS_UFS_MMIO_FUNC 246 247 long exynos_ufs_calc_time_cntr(struct exynos_ufs *, long); 248 249 static inline void exynos_ufs_enable_ov_tm(struct ufs_hba *hba) 250 { 251 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), true); 252 } 253 254 static inline void exynos_ufs_disable_ov_tm(struct ufs_hba *hba) 255 { 256 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_OV_TM), false); 257 } 258 259 static inline void exynos_ufs_enable_dbg_mode(struct ufs_hba *hba) 260 { 261 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), true); 262 } 263 264 static inline void exynos_ufs_disable_dbg_mode(struct ufs_hba *hba) 265 { 266 ufshcd_dme_set(hba, UIC_ARG_MIB(PA_DBG_MODE), false); 267 } 268 269 #endif /* _UFS_EXYNOS_H_ */ 270