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"); 1774