1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface 3 * 4 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. 5 * 6 * Thanks to the following companies for their support: 7 * 8 * - JMicron (hardware and technical support) 9 */ 10 11 #include <linux/bitfield.h> 12 #include <linux/string.h> 13 #include <linux/delay.h> 14 #include <linux/highmem.h> 15 #include <linux/module.h> 16 #include <linux/pci.h> 17 #include <linux/dma-mapping.h> 18 #include <linux/slab.h> 19 #include <linux/device.h> 20 #include <linux/scatterlist.h> 21 #include <linux/io.h> 22 #include <linux/iopoll.h> 23 #include <linux/gpio.h> 24 #include <linux/pm_runtime.h> 25 #include <linux/pm_qos.h> 26 #include <linux/debugfs.h> 27 #include <linux/acpi.h> 28 #include <linux/dmi.h> 29 30 #include <linux/mmc/host.h> 31 #include <linux/mmc/mmc.h> 32 #include <linux/mmc/slot-gpio.h> 33 34 #ifdef CONFIG_X86 35 #include <asm/iosf_mbi.h> 36 #endif 37 38 #include "cqhci.h" 39 40 #include "sdhci.h" 41 #include "sdhci-pci.h" 42 43 static void sdhci_pci_hw_reset(struct sdhci_host *host); 44 45 #ifdef CONFIG_PM_SLEEP 46 static int sdhci_pci_init_wakeup(struct sdhci_pci_chip *chip) 47 { 48 mmc_pm_flag_t pm_flags = 0; 49 bool cap_cd_wake = false; 50 int i; 51 52 for (i = 0; i < chip->num_slots; i++) { 53 struct sdhci_pci_slot *slot = chip->slots[i]; 54 55 if (slot) { 56 pm_flags |= slot->host->mmc->pm_flags; 57 if (slot->host->mmc->caps & MMC_CAP_CD_WAKE) 58 cap_cd_wake = true; 59 } 60 } 61 62 if ((pm_flags & MMC_PM_KEEP_POWER) && (pm_flags & MMC_PM_WAKE_SDIO_IRQ)) 63 return device_wakeup_enable(&chip->pdev->dev); 64 else if (!cap_cd_wake) 65 return device_wakeup_disable(&chip->pdev->dev); 66 67 return 0; 68 } 69 70 static int sdhci_pci_suspend_host(struct sdhci_pci_chip *chip) 71 { 72 int i, ret; 73 74 sdhci_pci_init_wakeup(chip); 75 76 for (i = 0; i < chip->num_slots; i++) { 77 struct sdhci_pci_slot *slot = chip->slots[i]; 78 struct sdhci_host *host; 79 80 if (!slot) 81 continue; 82 83 host = slot->host; 84 85 if (chip->pm_retune && host->tuning_mode != SDHCI_TUNING_MODE_3) 86 mmc_retune_needed(host->mmc); 87 88 ret = sdhci_suspend_host(host); 89 if (ret) 90 goto err_pci_suspend; 91 92 if (device_may_wakeup(&chip->pdev->dev)) 93 mmc_gpio_set_cd_wake(host->mmc, true); 94 } 95 96 return 0; 97 98 err_pci_suspend: 99 while (--i >= 0) 100 sdhci_resume_host(chip->slots[i]->host); 101 return ret; 102 } 103 104 int sdhci_pci_resume_host(struct sdhci_pci_chip *chip) 105 { 106 struct sdhci_pci_slot *slot; 107 int i, ret; 108 109 for (i = 0; i < chip->num_slots; i++) { 110 slot = chip->slots[i]; 111 if (!slot) 112 continue; 113 114 ret = sdhci_resume_host(slot->host); 115 if (ret) 116 return ret; 117 118 mmc_gpio_set_cd_wake(slot->host->mmc, false); 119 } 120 121 return 0; 122 } 123 124 static int sdhci_cqhci_suspend(struct sdhci_pci_chip *chip) 125 { 126 int ret; 127 128 ret = cqhci_suspend(chip->slots[0]->host->mmc); 129 if (ret) 130 return ret; 131 132 return sdhci_pci_suspend_host(chip); 133 } 134 135 static int sdhci_cqhci_resume(struct sdhci_pci_chip *chip) 136 { 137 int ret; 138 139 ret = sdhci_pci_resume_host(chip); 140 if (ret) 141 return ret; 142 143 return cqhci_resume(chip->slots[0]->host->mmc); 144 } 145 #endif 146 147 #ifdef CONFIG_PM 148 static int sdhci_pci_runtime_suspend_host(struct sdhci_pci_chip *chip) 149 { 150 struct sdhci_pci_slot *slot; 151 struct sdhci_host *host; 152 int i, ret; 153 154 for (i = 0; i < chip->num_slots; i++) { 155 slot = chip->slots[i]; 156 if (!slot) 157 continue; 158 159 host = slot->host; 160 161 ret = sdhci_runtime_suspend_host(host); 162 if (ret) 163 goto err_pci_runtime_suspend; 164 165 if (chip->rpm_retune && 166 host->tuning_mode != SDHCI_TUNING_MODE_3) 167 mmc_retune_needed(host->mmc); 168 } 169 170 return 0; 171 172 err_pci_runtime_suspend: 173 while (--i >= 0) 174 sdhci_runtime_resume_host(chip->slots[i]->host, 0); 175 return ret; 176 } 177 178 static int sdhci_pci_runtime_resume_host(struct sdhci_pci_chip *chip) 179 { 180 struct sdhci_pci_slot *slot; 181 int i, ret; 182 183 for (i = 0; i < chip->num_slots; i++) { 184 slot = chip->slots[i]; 185 if (!slot) 186 continue; 187 188 ret = sdhci_runtime_resume_host(slot->host, 0); 189 if (ret) 190 return ret; 191 } 192 193 return 0; 194 } 195 196 static int sdhci_cqhci_runtime_suspend(struct sdhci_pci_chip *chip) 197 { 198 int ret; 199 200 ret = cqhci_suspend(chip->slots[0]->host->mmc); 201 if (ret) 202 return ret; 203 204 return sdhci_pci_runtime_suspend_host(chip); 205 } 206 207 static int sdhci_cqhci_runtime_resume(struct sdhci_pci_chip *chip) 208 { 209 int ret; 210 211 ret = sdhci_pci_runtime_resume_host(chip); 212 if (ret) 213 return ret; 214 215 return cqhci_resume(chip->slots[0]->host->mmc); 216 } 217 #endif 218 219 static u32 sdhci_cqhci_irq(struct sdhci_host *host, u32 intmask) 220 { 221 int cmd_error = 0; 222 int data_error = 0; 223 224 if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error)) 225 return intmask; 226 227 cqhci_irq(host->mmc, intmask, cmd_error, data_error); 228 229 return 0; 230 } 231 232 static void sdhci_pci_dumpregs(struct mmc_host *mmc) 233 { 234 sdhci_dumpregs(mmc_priv(mmc)); 235 } 236 237 static void sdhci_cqhci_reset(struct sdhci_host *host, u8 mask) 238 { 239 if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL) && 240 host->mmc->cqe_private) 241 cqhci_deactivate(host->mmc); 242 sdhci_reset(host, mask); 243 } 244 245 /*****************************************************************************\ 246 * * 247 * Hardware specific quirk handling * 248 * * 249 \*****************************************************************************/ 250 251 static int ricoh_probe(struct sdhci_pci_chip *chip) 252 { 253 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG || 254 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) 255 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; 256 return 0; 257 } 258 259 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot) 260 { 261 slot->host->caps = 262 FIELD_PREP(SDHCI_TIMEOUT_CLK_MASK, 0x21) | 263 FIELD_PREP(SDHCI_CLOCK_BASE_MASK, 0x21) | 264 SDHCI_TIMEOUT_CLK_UNIT | 265 SDHCI_CAN_VDD_330 | 266 SDHCI_CAN_DO_HISPD | 267 SDHCI_CAN_DO_SDMA; 268 return 0; 269 } 270 271 #ifdef CONFIG_PM_SLEEP 272 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip) 273 { 274 /* Apply a delay to allow controller to settle */ 275 /* Otherwise it becomes confused if card state changed 276 during suspend */ 277 msleep(500); 278 return sdhci_pci_resume_host(chip); 279 } 280 #endif 281 282 static const struct sdhci_pci_fixes sdhci_ricoh = { 283 .probe = ricoh_probe, 284 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 285 SDHCI_QUIRK_FORCE_DMA | 286 SDHCI_QUIRK_CLOCK_BEFORE_RESET, 287 }; 288 289 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = { 290 .probe_slot = ricoh_mmc_probe_slot, 291 #ifdef CONFIG_PM_SLEEP 292 .resume = ricoh_mmc_resume, 293 #endif 294 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR | 295 SDHCI_QUIRK_CLOCK_BEFORE_RESET | 296 SDHCI_QUIRK_NO_CARD_NO_RESET | 297 SDHCI_QUIRK_MISSING_CAPS 298 }; 299 300 static void ene_714_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 301 { 302 struct sdhci_host *host = mmc_priv(mmc); 303 304 sdhci_set_ios(mmc, ios); 305 306 /* 307 * Some (ENE) controllers misbehave on some ios operations, 308 * signalling timeout and CRC errors even on CMD0. Resetting 309 * it on each ios seems to solve the problem. 310 */ 311 if (!(host->flags & SDHCI_DEVICE_DEAD)) 312 sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); 313 } 314 315 static int ene_714_probe_slot(struct sdhci_pci_slot *slot) 316 { 317 slot->host->mmc_host_ops.set_ios = ene_714_set_ios; 318 return 0; 319 } 320 321 static const struct sdhci_pci_fixes sdhci_ene_712 = { 322 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | 323 SDHCI_QUIRK_BROKEN_DMA, 324 }; 325 326 static const struct sdhci_pci_fixes sdhci_ene_714 = { 327 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | 328 SDHCI_QUIRK_BROKEN_DMA, 329 .probe_slot = ene_714_probe_slot, 330 }; 331 332 static const struct sdhci_pci_fixes sdhci_cafe = { 333 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | 334 SDHCI_QUIRK_NO_BUSY_IRQ | 335 SDHCI_QUIRK_BROKEN_CARD_DETECTION | 336 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL, 337 }; 338 339 static const struct sdhci_pci_fixes sdhci_intel_qrk = { 340 .quirks = SDHCI_QUIRK_NO_HISPD_BIT, 341 }; 342 343 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot) 344 { 345 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; 346 return 0; 347 } 348 349 /* 350 * ADMA operation is disabled for Moorestown platform due to 351 * hardware bugs. 352 */ 353 static int mrst_hc_probe(struct sdhci_pci_chip *chip) 354 { 355 /* 356 * slots number is fixed here for MRST as SDIO3/5 are never used and 357 * have hardware bugs. 358 */ 359 chip->num_slots = 1; 360 return 0; 361 } 362 363 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot) 364 { 365 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; 366 return 0; 367 } 368 369 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot) 370 { 371 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE; 372 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC; 373 return 0; 374 } 375 376 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot) 377 { 378 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE; 379 return 0; 380 } 381 382 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = { 383 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, 384 .probe_slot = mrst_hc_probe_slot, 385 }; 386 387 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = { 388 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT, 389 .probe = mrst_hc_probe, 390 }; 391 392 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = { 393 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 394 .allow_runtime_pm = true, 395 .own_cd_for_runtime_pm = true, 396 }; 397 398 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = { 399 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 400 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, 401 .allow_runtime_pm = true, 402 .probe_slot = mfd_sdio_probe_slot, 403 }; 404 405 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = { 406 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 407 .allow_runtime_pm = true, 408 .probe_slot = mfd_emmc_probe_slot, 409 }; 410 411 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = { 412 .quirks = SDHCI_QUIRK_BROKEN_ADMA, 413 .probe_slot = pch_hc_probe_slot, 414 }; 415 416 #ifdef CONFIG_X86 417 418 #define BYT_IOSF_SCCEP 0x63 419 #define BYT_IOSF_OCP_NETCTRL0 0x1078 420 #define BYT_IOSF_OCP_TIMEOUT_BASE GENMASK(10, 8) 421 422 static void byt_ocp_setting(struct pci_dev *pdev) 423 { 424 u32 val = 0; 425 426 if (pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC && 427 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SDIO && 428 pdev->device != PCI_DEVICE_ID_INTEL_BYT_SD && 429 pdev->device != PCI_DEVICE_ID_INTEL_BYT_EMMC2) 430 return; 431 432 if (iosf_mbi_read(BYT_IOSF_SCCEP, MBI_CR_READ, BYT_IOSF_OCP_NETCTRL0, 433 &val)) { 434 dev_err(&pdev->dev, "%s read error\n", __func__); 435 return; 436 } 437 438 if (!(val & BYT_IOSF_OCP_TIMEOUT_BASE)) 439 return; 440 441 val &= ~BYT_IOSF_OCP_TIMEOUT_BASE; 442 443 if (iosf_mbi_write(BYT_IOSF_SCCEP, MBI_CR_WRITE, BYT_IOSF_OCP_NETCTRL0, 444 val)) { 445 dev_err(&pdev->dev, "%s write error\n", __func__); 446 return; 447 } 448 449 dev_dbg(&pdev->dev, "%s completed\n", __func__); 450 } 451 452 #else 453 454 static inline void byt_ocp_setting(struct pci_dev *pdev) 455 { 456 } 457 458 #endif 459 460 enum { 461 INTEL_DSM_FNS = 0, 462 INTEL_DSM_V18_SWITCH = 3, 463 INTEL_DSM_V33_SWITCH = 4, 464 INTEL_DSM_DRV_STRENGTH = 9, 465 INTEL_DSM_D3_RETUNE = 10, 466 }; 467 468 struct intel_host { 469 u32 dsm_fns; 470 int drv_strength; 471 bool d3_retune; 472 bool rpm_retune_ok; 473 bool needs_pwr_off; 474 u32 glk_rx_ctrl1; 475 u32 glk_tun_val; 476 u32 active_ltr; 477 u32 idle_ltr; 478 }; 479 480 static const guid_t intel_dsm_guid = 481 GUID_INIT(0xF6C13EA5, 0x65CD, 0x461F, 482 0xAB, 0x7A, 0x29, 0xF7, 0xE8, 0xD5, 0xBD, 0x61); 483 484 static int __intel_dsm(struct intel_host *intel_host, struct device *dev, 485 unsigned int fn, u32 *result) 486 { 487 union acpi_object *obj; 488 int err = 0; 489 size_t len; 490 491 obj = acpi_evaluate_dsm(ACPI_HANDLE(dev), &intel_dsm_guid, 0, fn, NULL); 492 if (!obj) 493 return -EOPNOTSUPP; 494 495 if (obj->type != ACPI_TYPE_BUFFER || obj->buffer.length < 1) { 496 err = -EINVAL; 497 goto out; 498 } 499 500 len = min_t(size_t, obj->buffer.length, 4); 501 502 *result = 0; 503 memcpy(result, obj->buffer.pointer, len); 504 out: 505 ACPI_FREE(obj); 506 507 return err; 508 } 509 510 static int intel_dsm(struct intel_host *intel_host, struct device *dev, 511 unsigned int fn, u32 *result) 512 { 513 if (fn > 31 || !(intel_host->dsm_fns & (1 << fn))) 514 return -EOPNOTSUPP; 515 516 return __intel_dsm(intel_host, dev, fn, result); 517 } 518 519 static void intel_dsm_init(struct intel_host *intel_host, struct device *dev, 520 struct mmc_host *mmc) 521 { 522 int err; 523 u32 val; 524 525 intel_host->d3_retune = true; 526 527 err = __intel_dsm(intel_host, dev, INTEL_DSM_FNS, &intel_host->dsm_fns); 528 if (err) { 529 pr_debug("%s: DSM not supported, error %d\n", 530 mmc_hostname(mmc), err); 531 return; 532 } 533 534 pr_debug("%s: DSM function mask %#x\n", 535 mmc_hostname(mmc), intel_host->dsm_fns); 536 537 err = intel_dsm(intel_host, dev, INTEL_DSM_DRV_STRENGTH, &val); 538 intel_host->drv_strength = err ? 0 : val; 539 540 err = intel_dsm(intel_host, dev, INTEL_DSM_D3_RETUNE, &val); 541 intel_host->d3_retune = err ? true : !!val; 542 } 543 544 static void sdhci_pci_int_hw_reset(struct sdhci_host *host) 545 { 546 u8 reg; 547 548 reg = sdhci_readb(host, SDHCI_POWER_CONTROL); 549 reg |= 0x10; 550 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 551 /* For eMMC, minimum is 1us but give it 9us for good measure */ 552 udelay(9); 553 reg &= ~0x10; 554 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 555 /* For eMMC, minimum is 200us but give it 300us for good measure */ 556 usleep_range(300, 1000); 557 } 558 559 static int intel_select_drive_strength(struct mmc_card *card, 560 unsigned int max_dtr, int host_drv, 561 int card_drv, int *drv_type) 562 { 563 struct sdhci_host *host = mmc_priv(card->host); 564 struct sdhci_pci_slot *slot = sdhci_priv(host); 565 struct intel_host *intel_host = sdhci_pci_priv(slot); 566 567 if (!(mmc_driver_type_mask(intel_host->drv_strength) & card_drv)) 568 return 0; 569 570 return intel_host->drv_strength; 571 } 572 573 static int bxt_get_cd(struct mmc_host *mmc) 574 { 575 int gpio_cd = mmc_gpio_get_cd(mmc); 576 577 if (!gpio_cd) 578 return 0; 579 580 return sdhci_get_cd_nogpio(mmc); 581 } 582 583 static int mrfld_get_cd(struct mmc_host *mmc) 584 { 585 return sdhci_get_cd_nogpio(mmc); 586 } 587 588 #define SDHCI_INTEL_PWR_TIMEOUT_CNT 20 589 #define SDHCI_INTEL_PWR_TIMEOUT_UDELAY 100 590 591 static void sdhci_intel_set_power(struct sdhci_host *host, unsigned char mode, 592 unsigned short vdd) 593 { 594 struct sdhci_pci_slot *slot = sdhci_priv(host); 595 struct intel_host *intel_host = sdhci_pci_priv(slot); 596 int cntr; 597 u8 reg; 598 599 /* 600 * Bus power may control card power, but a full reset still may not 601 * reset the power, whereas a direct write to SDHCI_POWER_CONTROL can. 602 * That might be needed to initialize correctly, if the card was left 603 * powered on previously. 604 */ 605 if (intel_host->needs_pwr_off) { 606 intel_host->needs_pwr_off = false; 607 if (mode != MMC_POWER_OFF) { 608 sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); 609 usleep_range(10000, 12500); 610 } 611 } 612 613 sdhci_set_power(host, mode, vdd); 614 615 if (mode == MMC_POWER_OFF) 616 return; 617 618 /* 619 * Bus power might not enable after D3 -> D0 transition due to the 620 * present state not yet having propagated. Retry for up to 2ms. 621 */ 622 for (cntr = 0; cntr < SDHCI_INTEL_PWR_TIMEOUT_CNT; cntr++) { 623 reg = sdhci_readb(host, SDHCI_POWER_CONTROL); 624 if (reg & SDHCI_POWER_ON) 625 break; 626 udelay(SDHCI_INTEL_PWR_TIMEOUT_UDELAY); 627 reg |= SDHCI_POWER_ON; 628 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL); 629 } 630 } 631 632 static void sdhci_intel_set_uhs_signaling(struct sdhci_host *host, 633 unsigned int timing) 634 { 635 /* Set UHS timing to SDR25 for High Speed mode */ 636 if (timing == MMC_TIMING_MMC_HS || timing == MMC_TIMING_SD_HS) 637 timing = MMC_TIMING_UHS_SDR25; 638 sdhci_set_uhs_signaling(host, timing); 639 } 640 641 #define INTEL_HS400_ES_REG 0x78 642 #define INTEL_HS400_ES_BIT BIT(0) 643 644 static void intel_hs400_enhanced_strobe(struct mmc_host *mmc, 645 struct mmc_ios *ios) 646 { 647 struct sdhci_host *host = mmc_priv(mmc); 648 u32 val; 649 650 val = sdhci_readl(host, INTEL_HS400_ES_REG); 651 if (ios->enhanced_strobe) 652 val |= INTEL_HS400_ES_BIT; 653 else 654 val &= ~INTEL_HS400_ES_BIT; 655 sdhci_writel(host, val, INTEL_HS400_ES_REG); 656 } 657 658 static int intel_start_signal_voltage_switch(struct mmc_host *mmc, 659 struct mmc_ios *ios) 660 { 661 struct device *dev = mmc_dev(mmc); 662 struct sdhci_host *host = mmc_priv(mmc); 663 struct sdhci_pci_slot *slot = sdhci_priv(host); 664 struct intel_host *intel_host = sdhci_pci_priv(slot); 665 unsigned int fn; 666 u32 result = 0; 667 int err; 668 669 err = sdhci_start_signal_voltage_switch(mmc, ios); 670 if (err) 671 return err; 672 673 switch (ios->signal_voltage) { 674 case MMC_SIGNAL_VOLTAGE_330: 675 fn = INTEL_DSM_V33_SWITCH; 676 break; 677 case MMC_SIGNAL_VOLTAGE_180: 678 fn = INTEL_DSM_V18_SWITCH; 679 break; 680 default: 681 return 0; 682 } 683 684 err = intel_dsm(intel_host, dev, fn, &result); 685 pr_debug("%s: %s DSM fn %u error %d result %u\n", 686 mmc_hostname(mmc), __func__, fn, err, result); 687 688 return 0; 689 } 690 691 static const struct sdhci_ops sdhci_intel_byt_ops = { 692 .set_clock = sdhci_set_clock, 693 .set_power = sdhci_intel_set_power, 694 .enable_dma = sdhci_pci_enable_dma, 695 .set_bus_width = sdhci_set_bus_width, 696 .reset = sdhci_reset, 697 .set_uhs_signaling = sdhci_intel_set_uhs_signaling, 698 .hw_reset = sdhci_pci_hw_reset, 699 }; 700 701 static const struct sdhci_ops sdhci_intel_glk_ops = { 702 .set_clock = sdhci_set_clock, 703 .set_power = sdhci_intel_set_power, 704 .enable_dma = sdhci_pci_enable_dma, 705 .set_bus_width = sdhci_set_bus_width, 706 .reset = sdhci_cqhci_reset, 707 .set_uhs_signaling = sdhci_intel_set_uhs_signaling, 708 .hw_reset = sdhci_pci_hw_reset, 709 .irq = sdhci_cqhci_irq, 710 }; 711 712 static void byt_read_dsm(struct sdhci_pci_slot *slot) 713 { 714 struct intel_host *intel_host = sdhci_pci_priv(slot); 715 struct device *dev = &slot->chip->pdev->dev; 716 struct mmc_host *mmc = slot->host->mmc; 717 718 intel_dsm_init(intel_host, dev, mmc); 719 slot->chip->rpm_retune = intel_host->d3_retune; 720 } 721 722 static int intel_execute_tuning(struct mmc_host *mmc, u32 opcode) 723 { 724 int err = sdhci_execute_tuning(mmc, opcode); 725 struct sdhci_host *host = mmc_priv(mmc); 726 727 if (err) 728 return err; 729 730 /* 731 * Tuning can leave the IP in an active state (Buffer Read Enable bit 732 * set) which prevents the entry to low power states (i.e. S0i3). Data 733 * reset will clear it. 734 */ 735 sdhci_reset(host, SDHCI_RESET_DATA); 736 737 return 0; 738 } 739 740 #define INTEL_ACTIVELTR 0x804 741 #define INTEL_IDLELTR 0x808 742 743 #define INTEL_LTR_REQ BIT(15) 744 #define INTEL_LTR_SCALE_MASK GENMASK(11, 10) 745 #define INTEL_LTR_SCALE_1US (2 << 10) 746 #define INTEL_LTR_SCALE_32US (3 << 10) 747 #define INTEL_LTR_VALUE_MASK GENMASK(9, 0) 748 749 static void intel_cache_ltr(struct sdhci_pci_slot *slot) 750 { 751 struct intel_host *intel_host = sdhci_pci_priv(slot); 752 struct sdhci_host *host = slot->host; 753 754 intel_host->active_ltr = readl(host->ioaddr + INTEL_ACTIVELTR); 755 intel_host->idle_ltr = readl(host->ioaddr + INTEL_IDLELTR); 756 } 757 758 static void intel_ltr_set(struct device *dev, s32 val) 759 { 760 struct sdhci_pci_chip *chip = dev_get_drvdata(dev); 761 struct sdhci_pci_slot *slot = chip->slots[0]; 762 struct intel_host *intel_host = sdhci_pci_priv(slot); 763 struct sdhci_host *host = slot->host; 764 u32 ltr; 765 766 pm_runtime_get_sync(dev); 767 768 /* 769 * Program latency tolerance (LTR) accordingly what has been asked 770 * by the PM QoS layer or disable it in case we were passed 771 * negative value or PM_QOS_LATENCY_ANY. 772 */ 773 ltr = readl(host->ioaddr + INTEL_ACTIVELTR); 774 775 if (val == PM_QOS_LATENCY_ANY || val < 0) { 776 ltr &= ~INTEL_LTR_REQ; 777 } else { 778 ltr |= INTEL_LTR_REQ; 779 ltr &= ~INTEL_LTR_SCALE_MASK; 780 ltr &= ~INTEL_LTR_VALUE_MASK; 781 782 if (val > INTEL_LTR_VALUE_MASK) { 783 val >>= 5; 784 if (val > INTEL_LTR_VALUE_MASK) 785 val = INTEL_LTR_VALUE_MASK; 786 ltr |= INTEL_LTR_SCALE_32US | val; 787 } else { 788 ltr |= INTEL_LTR_SCALE_1US | val; 789 } 790 } 791 792 if (ltr == intel_host->active_ltr) 793 goto out; 794 795 writel(ltr, host->ioaddr + INTEL_ACTIVELTR); 796 writel(ltr, host->ioaddr + INTEL_IDLELTR); 797 798 /* Cache the values into lpss structure */ 799 intel_cache_ltr(slot); 800 out: 801 pm_runtime_put_autosuspend(dev); 802 } 803 804 static bool intel_use_ltr(struct sdhci_pci_chip *chip) 805 { 806 switch (chip->pdev->device) { 807 case PCI_DEVICE_ID_INTEL_BYT_EMMC: 808 case PCI_DEVICE_ID_INTEL_BYT_EMMC2: 809 case PCI_DEVICE_ID_INTEL_BYT_SDIO: 810 case PCI_DEVICE_ID_INTEL_BYT_SD: 811 case PCI_DEVICE_ID_INTEL_BSW_EMMC: 812 case PCI_DEVICE_ID_INTEL_BSW_SDIO: 813 case PCI_DEVICE_ID_INTEL_BSW_SD: 814 return false; 815 default: 816 return true; 817 } 818 } 819 820 static void intel_ltr_expose(struct sdhci_pci_chip *chip) 821 { 822 struct device *dev = &chip->pdev->dev; 823 824 if (!intel_use_ltr(chip)) 825 return; 826 827 dev->power.set_latency_tolerance = intel_ltr_set; 828 dev_pm_qos_expose_latency_tolerance(dev); 829 } 830 831 static void intel_ltr_hide(struct sdhci_pci_chip *chip) 832 { 833 struct device *dev = &chip->pdev->dev; 834 835 if (!intel_use_ltr(chip)) 836 return; 837 838 dev_pm_qos_hide_latency_tolerance(dev); 839 dev->power.set_latency_tolerance = NULL; 840 } 841 842 static void byt_probe_slot(struct sdhci_pci_slot *slot) 843 { 844 struct mmc_host_ops *ops = &slot->host->mmc_host_ops; 845 struct device *dev = &slot->chip->pdev->dev; 846 struct mmc_host *mmc = slot->host->mmc; 847 848 byt_read_dsm(slot); 849 850 byt_ocp_setting(slot->chip->pdev); 851 852 ops->execute_tuning = intel_execute_tuning; 853 ops->start_signal_voltage_switch = intel_start_signal_voltage_switch; 854 855 device_property_read_u32(dev, "max-frequency", &mmc->f_max); 856 857 if (!mmc->slotno) { 858 slot->chip->slots[mmc->slotno] = slot; 859 intel_ltr_expose(slot->chip); 860 } 861 } 862 863 static void byt_add_debugfs(struct sdhci_pci_slot *slot) 864 { 865 struct intel_host *intel_host = sdhci_pci_priv(slot); 866 struct mmc_host *mmc = slot->host->mmc; 867 struct dentry *dir = mmc->debugfs_root; 868 869 if (!intel_use_ltr(slot->chip)) 870 return; 871 872 debugfs_create_x32("active_ltr", 0444, dir, &intel_host->active_ltr); 873 debugfs_create_x32("idle_ltr", 0444, dir, &intel_host->idle_ltr); 874 875 intel_cache_ltr(slot); 876 } 877 878 static int byt_add_host(struct sdhci_pci_slot *slot) 879 { 880 int ret = sdhci_add_host(slot->host); 881 882 if (!ret) 883 byt_add_debugfs(slot); 884 return ret; 885 } 886 887 static void byt_remove_slot(struct sdhci_pci_slot *slot, int dead) 888 { 889 struct mmc_host *mmc = slot->host->mmc; 890 891 if (!mmc->slotno) 892 intel_ltr_hide(slot->chip); 893 } 894 895 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot) 896 { 897 byt_probe_slot(slot); 898 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE | 899 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR | 900 MMC_CAP_CMD_DURING_TFR | 901 MMC_CAP_WAIT_WHILE_BUSY; 902 slot->hw_reset = sdhci_pci_int_hw_reset; 903 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC) 904 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */ 905 slot->host->mmc_host_ops.select_drive_strength = 906 intel_select_drive_strength; 907 return 0; 908 } 909 910 static bool glk_broken_cqhci(struct sdhci_pci_slot *slot) 911 { 912 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC && 913 (dmi_match(DMI_BIOS_VENDOR, "LENOVO") || 914 dmi_match(DMI_SYS_VENDOR, "IRBIS")); 915 } 916 917 static bool jsl_broken_hs400es(struct sdhci_pci_slot *slot) 918 { 919 return slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_JSL_EMMC && 920 dmi_match(DMI_BIOS_VENDOR, "ASUSTeK COMPUTER INC."); 921 } 922 923 static int glk_emmc_probe_slot(struct sdhci_pci_slot *slot) 924 { 925 int ret = byt_emmc_probe_slot(slot); 926 927 if (!glk_broken_cqhci(slot)) 928 slot->host->mmc->caps2 |= MMC_CAP2_CQE; 929 930 if (slot->chip->pdev->device != PCI_DEVICE_ID_INTEL_GLK_EMMC) { 931 if (!jsl_broken_hs400es(slot)) { 932 slot->host->mmc->caps2 |= MMC_CAP2_HS400_ES; 933 slot->host->mmc_host_ops.hs400_enhanced_strobe = 934 intel_hs400_enhanced_strobe; 935 } 936 slot->host->mmc->caps2 |= MMC_CAP2_CQE_DCMD; 937 } 938 939 return ret; 940 } 941 942 static const struct cqhci_host_ops glk_cqhci_ops = { 943 .enable = sdhci_cqe_enable, 944 .disable = sdhci_cqe_disable, 945 .dumpregs = sdhci_pci_dumpregs, 946 }; 947 948 static int glk_emmc_add_host(struct sdhci_pci_slot *slot) 949 { 950 struct device *dev = &slot->chip->pdev->dev; 951 struct sdhci_host *host = slot->host; 952 struct cqhci_host *cq_host; 953 bool dma64; 954 int ret; 955 956 ret = sdhci_setup_host(host); 957 if (ret) 958 return ret; 959 960 cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL); 961 if (!cq_host) { 962 ret = -ENOMEM; 963 goto cleanup; 964 } 965 966 cq_host->mmio = host->ioaddr + 0x200; 967 cq_host->quirks |= CQHCI_QUIRK_SHORT_TXFR_DESC_SZ; 968 cq_host->ops = &glk_cqhci_ops; 969 970 dma64 = host->flags & SDHCI_USE_64_BIT_DMA; 971 if (dma64) 972 cq_host->caps |= CQHCI_TASK_DESC_SZ_128; 973 974 ret = cqhci_init(cq_host, host->mmc, dma64); 975 if (ret) 976 goto cleanup; 977 978 ret = __sdhci_add_host(host); 979 if (ret) 980 goto cleanup; 981 982 byt_add_debugfs(slot); 983 984 return 0; 985 986 cleanup: 987 sdhci_cleanup_host(host); 988 return ret; 989 } 990 991 #ifdef CONFIG_PM 992 #define GLK_RX_CTRL1 0x834 993 #define GLK_TUN_VAL 0x840 994 #define GLK_PATH_PLL GENMASK(13, 8) 995 #define GLK_DLY GENMASK(6, 0) 996 /* Workaround firmware failing to restore the tuning value */ 997 static void glk_rpm_retune_wa(struct sdhci_pci_chip *chip, bool susp) 998 { 999 struct sdhci_pci_slot *slot = chip->slots[0]; 1000 struct intel_host *intel_host = sdhci_pci_priv(slot); 1001 struct sdhci_host *host = slot->host; 1002 u32 glk_rx_ctrl1; 1003 u32 glk_tun_val; 1004 u32 dly; 1005 1006 if (intel_host->rpm_retune_ok || !mmc_can_retune(host->mmc)) 1007 return; 1008 1009 glk_rx_ctrl1 = sdhci_readl(host, GLK_RX_CTRL1); 1010 glk_tun_val = sdhci_readl(host, GLK_TUN_VAL); 1011 1012 if (susp) { 1013 intel_host->glk_rx_ctrl1 = glk_rx_ctrl1; 1014 intel_host->glk_tun_val = glk_tun_val; 1015 return; 1016 } 1017 1018 if (!intel_host->glk_tun_val) 1019 return; 1020 1021 if (glk_rx_ctrl1 != intel_host->glk_rx_ctrl1) { 1022 intel_host->rpm_retune_ok = true; 1023 return; 1024 } 1025 1026 dly = FIELD_PREP(GLK_DLY, FIELD_GET(GLK_PATH_PLL, glk_rx_ctrl1) + 1027 (intel_host->glk_tun_val << 1)); 1028 if (dly == FIELD_GET(GLK_DLY, glk_rx_ctrl1)) 1029 return; 1030 1031 glk_rx_ctrl1 = (glk_rx_ctrl1 & ~GLK_DLY) | dly; 1032 sdhci_writel(host, glk_rx_ctrl1, GLK_RX_CTRL1); 1033 1034 intel_host->rpm_retune_ok = true; 1035 chip->rpm_retune = true; 1036 mmc_retune_needed(host->mmc); 1037 pr_info("%s: Requiring re-tune after rpm resume", mmc_hostname(host->mmc)); 1038 } 1039 1040 static void glk_rpm_retune_chk(struct sdhci_pci_chip *chip, bool susp) 1041 { 1042 if (chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_EMMC && 1043 !chip->rpm_retune) 1044 glk_rpm_retune_wa(chip, susp); 1045 } 1046 1047 static int glk_runtime_suspend(struct sdhci_pci_chip *chip) 1048 { 1049 glk_rpm_retune_chk(chip, true); 1050 1051 return sdhci_cqhci_runtime_suspend(chip); 1052 } 1053 1054 static int glk_runtime_resume(struct sdhci_pci_chip *chip) 1055 { 1056 glk_rpm_retune_chk(chip, false); 1057 1058 return sdhci_cqhci_runtime_resume(chip); 1059 } 1060 #endif 1061 1062 #ifdef CONFIG_ACPI 1063 static int ni_set_max_freq(struct sdhci_pci_slot *slot) 1064 { 1065 acpi_status status; 1066 unsigned long long max_freq; 1067 1068 status = acpi_evaluate_integer(ACPI_HANDLE(&slot->chip->pdev->dev), 1069 "MXFQ", NULL, &max_freq); 1070 if (ACPI_FAILURE(status)) { 1071 dev_err(&slot->chip->pdev->dev, 1072 "MXFQ not found in acpi table\n"); 1073 return -EINVAL; 1074 } 1075 1076 slot->host->mmc->f_max = max_freq * 1000000; 1077 1078 return 0; 1079 } 1080 #else 1081 static inline int ni_set_max_freq(struct sdhci_pci_slot *slot) 1082 { 1083 return 0; 1084 } 1085 #endif 1086 1087 static int ni_byt_sdio_probe_slot(struct sdhci_pci_slot *slot) 1088 { 1089 int err; 1090 1091 byt_probe_slot(slot); 1092 1093 err = ni_set_max_freq(slot); 1094 if (err) 1095 return err; 1096 1097 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE | 1098 MMC_CAP_WAIT_WHILE_BUSY; 1099 return 0; 1100 } 1101 1102 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot) 1103 { 1104 byt_probe_slot(slot); 1105 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE | 1106 MMC_CAP_WAIT_WHILE_BUSY; 1107 return 0; 1108 } 1109 1110 static void byt_needs_pwr_off(struct sdhci_pci_slot *slot) 1111 { 1112 struct intel_host *intel_host = sdhci_pci_priv(slot); 1113 u8 reg = sdhci_readb(slot->host, SDHCI_POWER_CONTROL); 1114 1115 intel_host->needs_pwr_off = reg & SDHCI_POWER_ON; 1116 } 1117 1118 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot) 1119 { 1120 byt_probe_slot(slot); 1121 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | 1122 MMC_CAP_AGGRESSIVE_PM | MMC_CAP_CD_WAKE; 1123 slot->cd_idx = 0; 1124 slot->cd_override_level = true; 1125 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD || 1126 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD || 1127 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD || 1128 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_GLK_SD) 1129 slot->host->mmc_host_ops.get_cd = bxt_get_cd; 1130 1131 if (slot->chip->pdev->subsystem_vendor == PCI_VENDOR_ID_NI && 1132 slot->chip->pdev->subsystem_device == PCI_SUBDEVICE_ID_NI_78E3) 1133 slot->host->mmc->caps2 |= MMC_CAP2_AVOID_3_3V; 1134 1135 byt_needs_pwr_off(slot); 1136 1137 return 0; 1138 } 1139 1140 #ifdef CONFIG_PM_SLEEP 1141 1142 static int byt_resume(struct sdhci_pci_chip *chip) 1143 { 1144 byt_ocp_setting(chip->pdev); 1145 1146 return sdhci_pci_resume_host(chip); 1147 } 1148 1149 #endif 1150 1151 #ifdef CONFIG_PM 1152 1153 static int byt_runtime_resume(struct sdhci_pci_chip *chip) 1154 { 1155 byt_ocp_setting(chip->pdev); 1156 1157 return sdhci_pci_runtime_resume_host(chip); 1158 } 1159 1160 #endif 1161 1162 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = { 1163 #ifdef CONFIG_PM_SLEEP 1164 .resume = byt_resume, 1165 #endif 1166 #ifdef CONFIG_PM 1167 .runtime_resume = byt_runtime_resume, 1168 #endif 1169 .allow_runtime_pm = true, 1170 .probe_slot = byt_emmc_probe_slot, 1171 .add_host = byt_add_host, 1172 .remove_slot = byt_remove_slot, 1173 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 1174 SDHCI_QUIRK_NO_LED, 1175 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1176 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | 1177 SDHCI_QUIRK2_STOP_WITH_TC, 1178 .ops = &sdhci_intel_byt_ops, 1179 .priv_size = sizeof(struct intel_host), 1180 }; 1181 1182 static const struct sdhci_pci_fixes sdhci_intel_glk_emmc = { 1183 .allow_runtime_pm = true, 1184 .probe_slot = glk_emmc_probe_slot, 1185 .add_host = glk_emmc_add_host, 1186 .remove_slot = byt_remove_slot, 1187 #ifdef CONFIG_PM_SLEEP 1188 .suspend = sdhci_cqhci_suspend, 1189 .resume = sdhci_cqhci_resume, 1190 #endif 1191 #ifdef CONFIG_PM 1192 .runtime_suspend = glk_runtime_suspend, 1193 .runtime_resume = glk_runtime_resume, 1194 #endif 1195 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 1196 SDHCI_QUIRK_NO_LED, 1197 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1198 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 | 1199 SDHCI_QUIRK2_STOP_WITH_TC, 1200 .ops = &sdhci_intel_glk_ops, 1201 .priv_size = sizeof(struct intel_host), 1202 }; 1203 1204 static const struct sdhci_pci_fixes sdhci_ni_byt_sdio = { 1205 #ifdef CONFIG_PM_SLEEP 1206 .resume = byt_resume, 1207 #endif 1208 #ifdef CONFIG_PM 1209 .runtime_resume = byt_runtime_resume, 1210 #endif 1211 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 1212 SDHCI_QUIRK_NO_LED, 1213 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | 1214 SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 1215 .allow_runtime_pm = true, 1216 .probe_slot = ni_byt_sdio_probe_slot, 1217 .add_host = byt_add_host, 1218 .remove_slot = byt_remove_slot, 1219 .ops = &sdhci_intel_byt_ops, 1220 .priv_size = sizeof(struct intel_host), 1221 }; 1222 1223 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = { 1224 #ifdef CONFIG_PM_SLEEP 1225 .resume = byt_resume, 1226 #endif 1227 #ifdef CONFIG_PM 1228 .runtime_resume = byt_runtime_resume, 1229 #endif 1230 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 1231 SDHCI_QUIRK_NO_LED, 1232 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON | 1233 SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 1234 .allow_runtime_pm = true, 1235 .probe_slot = byt_sdio_probe_slot, 1236 .add_host = byt_add_host, 1237 .remove_slot = byt_remove_slot, 1238 .ops = &sdhci_intel_byt_ops, 1239 .priv_size = sizeof(struct intel_host), 1240 }; 1241 1242 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = { 1243 #ifdef CONFIG_PM_SLEEP 1244 .resume = byt_resume, 1245 #endif 1246 #ifdef CONFIG_PM 1247 .runtime_resume = byt_runtime_resume, 1248 #endif 1249 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC | 1250 SDHCI_QUIRK_NO_LED, 1251 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON | 1252 SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1253 SDHCI_QUIRK2_STOP_WITH_TC, 1254 .allow_runtime_pm = true, 1255 .own_cd_for_runtime_pm = true, 1256 .probe_slot = byt_sd_probe_slot, 1257 .add_host = byt_add_host, 1258 .remove_slot = byt_remove_slot, 1259 .ops = &sdhci_intel_byt_ops, 1260 .priv_size = sizeof(struct intel_host), 1261 }; 1262 1263 /* Define Host controllers for Intel Merrifield platform */ 1264 #define INTEL_MRFLD_EMMC_0 0 1265 #define INTEL_MRFLD_EMMC_1 1 1266 #define INTEL_MRFLD_SD 2 1267 #define INTEL_MRFLD_SDIO 3 1268 1269 #ifdef CONFIG_ACPI 1270 static void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) 1271 { 1272 struct acpi_device *device; 1273 1274 device = ACPI_COMPANION(&slot->chip->pdev->dev); 1275 if (device) 1276 acpi_device_fix_up_power_extended(device); 1277 } 1278 #else 1279 static inline void intel_mrfld_mmc_fix_up_power_slot(struct sdhci_pci_slot *slot) {} 1280 #endif 1281 1282 static int intel_mrfld_mmc_probe_slot(struct sdhci_pci_slot *slot) 1283 { 1284 unsigned int func = PCI_FUNC(slot->chip->pdev->devfn); 1285 1286 switch (func) { 1287 case INTEL_MRFLD_EMMC_0: 1288 case INTEL_MRFLD_EMMC_1: 1289 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | 1290 MMC_CAP_8_BIT_DATA | 1291 MMC_CAP_1_8V_DDR; 1292 break; 1293 case INTEL_MRFLD_SD: 1294 slot->cd_idx = 0; 1295 slot->cd_override_level = true; 1296 /* 1297 * There are two PCB designs of SD card slot with the opposite 1298 * card detection sense. Quirk this out by ignoring GPIO state 1299 * completely in the custom ->get_cd() callback. 1300 */ 1301 slot->host->mmc_host_ops.get_cd = mrfld_get_cd; 1302 slot->host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; 1303 break; 1304 case INTEL_MRFLD_SDIO: 1305 /* Advertise 2.0v for compatibility with the SDIO card's OCR */ 1306 slot->host->ocr_mask = MMC_VDD_20_21 | MMC_VDD_165_195; 1307 slot->host->mmc->caps |= MMC_CAP_NONREMOVABLE | 1308 MMC_CAP_POWER_OFF_CARD; 1309 break; 1310 default: 1311 return -ENODEV; 1312 } 1313 1314 intel_mrfld_mmc_fix_up_power_slot(slot); 1315 return 0; 1316 } 1317 1318 static const struct sdhci_pci_fixes sdhci_intel_mrfld_mmc = { 1319 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, 1320 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 | 1321 SDHCI_QUIRK2_PRESET_VALUE_BROKEN, 1322 .allow_runtime_pm = true, 1323 .probe_slot = intel_mrfld_mmc_probe_slot, 1324 }; 1325 1326 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) 1327 { 1328 u8 scratch; 1329 int ret; 1330 1331 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch); 1332 if (ret) 1333 return ret; 1334 1335 /* 1336 * Turn PMOS on [bit 0], set over current detection to 2.4 V 1337 * [bit 1:2] and enable over current debouncing [bit 6]. 1338 */ 1339 if (on) 1340 scratch |= 0x47; 1341 else 1342 scratch &= ~0x47; 1343 1344 return pci_write_config_byte(chip->pdev, 0xAE, scratch); 1345 } 1346 1347 static int jmicron_probe(struct sdhci_pci_chip *chip) 1348 { 1349 int ret; 1350 u16 mmcdev = 0; 1351 1352 if (chip->pdev->revision == 0) { 1353 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR | 1354 SDHCI_QUIRK_32BIT_DMA_SIZE | 1355 SDHCI_QUIRK_32BIT_ADMA_SIZE | 1356 SDHCI_QUIRK_RESET_AFTER_REQUEST | 1357 SDHCI_QUIRK_BROKEN_SMALL_PIO; 1358 } 1359 1360 /* 1361 * JMicron chips can have two interfaces to the same hardware 1362 * in order to work around limitations in Microsoft's driver. 1363 * We need to make sure we only bind to one of them. 1364 * 1365 * This code assumes two things: 1366 * 1367 * 1. The PCI code adds subfunctions in order. 1368 * 1369 * 2. The MMC interface has a lower subfunction number 1370 * than the SD interface. 1371 */ 1372 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) 1373 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC; 1374 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD) 1375 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD; 1376 1377 if (mmcdev) { 1378 struct pci_dev *sd_dev; 1379 1380 sd_dev = NULL; 1381 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON, 1382 mmcdev, sd_dev)) != NULL) { 1383 if ((PCI_SLOT(chip->pdev->devfn) == 1384 PCI_SLOT(sd_dev->devfn)) && 1385 (chip->pdev->bus == sd_dev->bus)) 1386 break; 1387 } 1388 1389 if (sd_dev) { 1390 pci_dev_put(sd_dev); 1391 dev_info(&chip->pdev->dev, "Refusing to bind to " 1392 "secondary interface.\n"); 1393 return -ENODEV; 1394 } 1395 } 1396 1397 /* 1398 * JMicron chips need a bit of a nudge to enable the power 1399 * output pins. 1400 */ 1401 ret = jmicron_pmos(chip, 1); 1402 if (ret) { 1403 dev_err(&chip->pdev->dev, "Failure enabling card power\n"); 1404 return ret; 1405 } 1406 1407 /* quirk for unsable RO-detection on JM388 chips */ 1408 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD || 1409 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1410 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT; 1411 1412 return 0; 1413 } 1414 1415 static void jmicron_enable_mmc(struct sdhci_host *host, int on) 1416 { 1417 u8 scratch; 1418 1419 scratch = readb(host->ioaddr + 0xC0); 1420 1421 if (on) 1422 scratch |= 0x01; 1423 else 1424 scratch &= ~0x01; 1425 1426 writeb(scratch, host->ioaddr + 0xC0); 1427 } 1428 1429 static int jmicron_probe_slot(struct sdhci_pci_slot *slot) 1430 { 1431 if (slot->chip->pdev->revision == 0) { 1432 u16 version; 1433 1434 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION); 1435 version = (version & SDHCI_VENDOR_VER_MASK) >> 1436 SDHCI_VENDOR_VER_SHIFT; 1437 1438 /* 1439 * Older versions of the chip have lots of nasty glitches 1440 * in the ADMA engine. It's best just to avoid it 1441 * completely. 1442 */ 1443 if (version < 0xAC) 1444 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA; 1445 } 1446 1447 /* JM388 MMC doesn't support 1.8V while SD supports it */ 1448 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1449 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 | 1450 MMC_VDD_29_30 | MMC_VDD_30_31 | 1451 MMC_VDD_165_195; /* allow 1.8V */ 1452 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 | 1453 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */ 1454 } 1455 1456 /* 1457 * The secondary interface requires a bit set to get the 1458 * interrupts. 1459 */ 1460 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1461 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1462 jmicron_enable_mmc(slot->host, 1); 1463 1464 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST; 1465 1466 return 0; 1467 } 1468 1469 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead) 1470 { 1471 if (dead) 1472 return; 1473 1474 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1475 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) 1476 jmicron_enable_mmc(slot->host, 0); 1477 } 1478 1479 #ifdef CONFIG_PM_SLEEP 1480 static int jmicron_suspend(struct sdhci_pci_chip *chip) 1481 { 1482 int i, ret; 1483 1484 ret = sdhci_pci_suspend_host(chip); 1485 if (ret) 1486 return ret; 1487 1488 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1489 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1490 for (i = 0; i < chip->num_slots; i++) 1491 jmicron_enable_mmc(chip->slots[i]->host, 0); 1492 } 1493 1494 return 0; 1495 } 1496 1497 static int jmicron_resume(struct sdhci_pci_chip *chip) 1498 { 1499 int ret, i; 1500 1501 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC || 1502 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) { 1503 for (i = 0; i < chip->num_slots; i++) 1504 jmicron_enable_mmc(chip->slots[i]->host, 1); 1505 } 1506 1507 ret = jmicron_pmos(chip, 1); 1508 if (ret) { 1509 dev_err(&chip->pdev->dev, "Failure enabling card power\n"); 1510 return ret; 1511 } 1512 1513 return sdhci_pci_resume_host(chip); 1514 } 1515 #endif 1516 1517 static const struct sdhci_pci_fixes sdhci_jmicron = { 1518 .probe = jmicron_probe, 1519 1520 .probe_slot = jmicron_probe_slot, 1521 .remove_slot = jmicron_remove_slot, 1522 1523 #ifdef CONFIG_PM_SLEEP 1524 .suspend = jmicron_suspend, 1525 .resume = jmicron_resume, 1526 #endif 1527 }; 1528 1529 /* SysKonnect CardBus2SDIO extra registers */ 1530 #define SYSKT_CTRL 0x200 1531 #define SYSKT_RDFIFO_STAT 0x204 1532 #define SYSKT_WRFIFO_STAT 0x208 1533 #define SYSKT_POWER_DATA 0x20c 1534 #define SYSKT_POWER_330 0xef 1535 #define SYSKT_POWER_300 0xf8 1536 #define SYSKT_POWER_184 0xcc 1537 #define SYSKT_POWER_CMD 0x20d 1538 #define SYSKT_POWER_START (1 << 7) 1539 #define SYSKT_POWER_STATUS 0x20e 1540 #define SYSKT_POWER_STATUS_OK (1 << 0) 1541 #define SYSKT_BOARD_REV 0x210 1542 #define SYSKT_CHIP_REV 0x211 1543 #define SYSKT_CONF_DATA 0x212 1544 #define SYSKT_CONF_DATA_1V8 (1 << 2) 1545 #define SYSKT_CONF_DATA_2V5 (1 << 1) 1546 #define SYSKT_CONF_DATA_3V3 (1 << 0) 1547 1548 static int syskt_probe(struct sdhci_pci_chip *chip) 1549 { 1550 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 1551 chip->pdev->class &= ~0x0000FF; 1552 chip->pdev->class |= PCI_SDHCI_IFDMA; 1553 } 1554 return 0; 1555 } 1556 1557 static int syskt_probe_slot(struct sdhci_pci_slot *slot) 1558 { 1559 int tm, ps; 1560 1561 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV); 1562 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV); 1563 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, " 1564 "board rev %d.%d, chip rev %d.%d\n", 1565 board_rev >> 4, board_rev & 0xf, 1566 chip_rev >> 4, chip_rev & 0xf); 1567 if (chip_rev >= 0x20) 1568 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA; 1569 1570 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA); 1571 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD); 1572 udelay(50); 1573 tm = 10; /* Wait max 1 ms */ 1574 do { 1575 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS); 1576 if (ps & SYSKT_POWER_STATUS_OK) 1577 break; 1578 udelay(100); 1579 } while (--tm); 1580 if (!tm) { 1581 dev_err(&slot->chip->pdev->dev, 1582 "power regulator never stabilized"); 1583 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD); 1584 return -ENODEV; 1585 } 1586 1587 return 0; 1588 } 1589 1590 static const struct sdhci_pci_fixes sdhci_syskt = { 1591 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER, 1592 .probe = syskt_probe, 1593 .probe_slot = syskt_probe_slot, 1594 }; 1595 1596 static int via_probe(struct sdhci_pci_chip *chip) 1597 { 1598 if (chip->pdev->revision == 0x10) 1599 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER; 1600 1601 return 0; 1602 } 1603 1604 static const struct sdhci_pci_fixes sdhci_via = { 1605 .probe = via_probe, 1606 }; 1607 1608 static int rtsx_probe_slot(struct sdhci_pci_slot *slot) 1609 { 1610 slot->host->mmc->caps2 |= MMC_CAP2_HS200; 1611 return 0; 1612 } 1613 1614 static const struct sdhci_pci_fixes sdhci_rtsx = { 1615 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | 1616 SDHCI_QUIRK2_BROKEN_64_BIT_DMA | 1617 SDHCI_QUIRK2_BROKEN_DDR50, 1618 .probe_slot = rtsx_probe_slot, 1619 }; 1620 1621 /*AMD chipset generation*/ 1622 enum amd_chipset_gen { 1623 AMD_CHIPSET_BEFORE_ML, 1624 AMD_CHIPSET_CZ, 1625 AMD_CHIPSET_NL, 1626 AMD_CHIPSET_UNKNOWN, 1627 }; 1628 1629 /* AMD registers */ 1630 #define AMD_SD_AUTO_PATTERN 0xB8 1631 #define AMD_MSLEEP_DURATION 4 1632 #define AMD_SD_MISC_CONTROL 0xD0 1633 #define AMD_MAX_TUNE_VALUE 0x0B 1634 #define AMD_AUTO_TUNE_SEL 0x10800 1635 #define AMD_FIFO_PTR 0x30 1636 #define AMD_BIT_MASK 0x1F 1637 1638 static void amd_tuning_reset(struct sdhci_host *host) 1639 { 1640 unsigned int val; 1641 1642 val = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1643 val |= SDHCI_CTRL_PRESET_VAL_ENABLE | SDHCI_CTRL_EXEC_TUNING; 1644 sdhci_writew(host, val, SDHCI_HOST_CONTROL2); 1645 1646 val = sdhci_readw(host, SDHCI_HOST_CONTROL2); 1647 val &= ~SDHCI_CTRL_EXEC_TUNING; 1648 sdhci_writew(host, val, SDHCI_HOST_CONTROL2); 1649 } 1650 1651 static void amd_config_tuning_phase(struct pci_dev *pdev, u8 phase) 1652 { 1653 unsigned int val; 1654 1655 pci_read_config_dword(pdev, AMD_SD_AUTO_PATTERN, &val); 1656 val &= ~AMD_BIT_MASK; 1657 val |= (AMD_AUTO_TUNE_SEL | (phase << 1)); 1658 pci_write_config_dword(pdev, AMD_SD_AUTO_PATTERN, val); 1659 } 1660 1661 static void amd_enable_manual_tuning(struct pci_dev *pdev) 1662 { 1663 unsigned int val; 1664 1665 pci_read_config_dword(pdev, AMD_SD_MISC_CONTROL, &val); 1666 val |= AMD_FIFO_PTR; 1667 pci_write_config_dword(pdev, AMD_SD_MISC_CONTROL, val); 1668 } 1669 1670 static int amd_execute_tuning_hs200(struct sdhci_host *host, u32 opcode) 1671 { 1672 struct sdhci_pci_slot *slot = sdhci_priv(host); 1673 struct pci_dev *pdev = slot->chip->pdev; 1674 u8 valid_win = 0; 1675 u8 valid_win_max = 0; 1676 u8 valid_win_end = 0; 1677 u8 ctrl, tune_around; 1678 1679 amd_tuning_reset(host); 1680 1681 for (tune_around = 0; tune_around < 12; tune_around++) { 1682 amd_config_tuning_phase(pdev, tune_around); 1683 1684 if (mmc_send_tuning(host->mmc, opcode, NULL)) { 1685 valid_win = 0; 1686 msleep(AMD_MSLEEP_DURATION); 1687 ctrl = SDHCI_RESET_CMD | SDHCI_RESET_DATA; 1688 sdhci_writeb(host, ctrl, SDHCI_SOFTWARE_RESET); 1689 } else if (++valid_win > valid_win_max) { 1690 valid_win_max = valid_win; 1691 valid_win_end = tune_around; 1692 } 1693 } 1694 1695 if (!valid_win_max) { 1696 dev_err(&pdev->dev, "no tuning point found\n"); 1697 return -EIO; 1698 } 1699 1700 amd_config_tuning_phase(pdev, valid_win_end - valid_win_max / 2); 1701 1702 amd_enable_manual_tuning(pdev); 1703 1704 host->mmc->retune_period = 0; 1705 1706 return 0; 1707 } 1708 1709 static int amd_execute_tuning(struct mmc_host *mmc, u32 opcode) 1710 { 1711 struct sdhci_host *host = mmc_priv(mmc); 1712 1713 /* AMD requires custom HS200 tuning */ 1714 if (host->timing == MMC_TIMING_MMC_HS200) 1715 return amd_execute_tuning_hs200(host, opcode); 1716 1717 /* Otherwise perform standard SDHCI tuning */ 1718 return sdhci_execute_tuning(mmc, opcode); 1719 } 1720 1721 static int amd_probe_slot(struct sdhci_pci_slot *slot) 1722 { 1723 struct mmc_host_ops *ops = &slot->host->mmc_host_ops; 1724 1725 ops->execute_tuning = amd_execute_tuning; 1726 1727 return 0; 1728 } 1729 1730 static int amd_probe(struct sdhci_pci_chip *chip) 1731 { 1732 struct pci_dev *smbus_dev; 1733 enum amd_chipset_gen gen; 1734 1735 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, 1736 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL); 1737 if (smbus_dev) { 1738 gen = AMD_CHIPSET_BEFORE_ML; 1739 } else { 1740 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD, 1741 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL); 1742 if (smbus_dev) { 1743 if (smbus_dev->revision < 0x51) 1744 gen = AMD_CHIPSET_CZ; 1745 else 1746 gen = AMD_CHIPSET_NL; 1747 } else { 1748 gen = AMD_CHIPSET_UNKNOWN; 1749 } 1750 } 1751 1752 if (gen == AMD_CHIPSET_BEFORE_ML || gen == AMD_CHIPSET_CZ) 1753 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD; 1754 1755 return 0; 1756 } 1757 1758 static u32 sdhci_read_present_state(struct sdhci_host *host) 1759 { 1760 return sdhci_readl(host, SDHCI_PRESENT_STATE); 1761 } 1762 1763 static void amd_sdhci_reset(struct sdhci_host *host, u8 mask) 1764 { 1765 struct sdhci_pci_slot *slot = sdhci_priv(host); 1766 struct pci_dev *pdev = slot->chip->pdev; 1767 u32 present_state; 1768 1769 /* 1770 * SDHC 0x7906 requires a hard reset to clear all internal state. 1771 * Otherwise it can get into a bad state where the DATA lines are always 1772 * read as zeros. 1773 */ 1774 if (pdev->device == 0x7906 && (mask & SDHCI_RESET_ALL)) { 1775 pci_clear_master(pdev); 1776 1777 pci_save_state(pdev); 1778 1779 pci_set_power_state(pdev, PCI_D3cold); 1780 pr_debug("%s: power_state=%u\n", mmc_hostname(host->mmc), 1781 pdev->current_state); 1782 pci_set_power_state(pdev, PCI_D0); 1783 1784 pci_restore_state(pdev); 1785 1786 /* 1787 * SDHCI_RESET_ALL says the card detect logic should not be 1788 * reset, but since we need to reset the entire controller 1789 * we should wait until the card detect logic has stabilized. 1790 * 1791 * This normally takes about 40ms. 1792 */ 1793 readx_poll_timeout( 1794 sdhci_read_present_state, 1795 host, 1796 present_state, 1797 present_state & SDHCI_CD_STABLE, 1798 10000, 1799 100000 1800 ); 1801 } 1802 1803 return sdhci_reset(host, mask); 1804 } 1805 1806 static const struct sdhci_ops amd_sdhci_pci_ops = { 1807 .set_clock = sdhci_set_clock, 1808 .enable_dma = sdhci_pci_enable_dma, 1809 .set_bus_width = sdhci_set_bus_width, 1810 .reset = amd_sdhci_reset, 1811 .set_uhs_signaling = sdhci_set_uhs_signaling, 1812 }; 1813 1814 static const struct sdhci_pci_fixes sdhci_amd = { 1815 .probe = amd_probe, 1816 .ops = &amd_sdhci_pci_ops, 1817 .probe_slot = amd_probe_slot, 1818 }; 1819 1820 static const struct pci_device_id pci_ids[] = { 1821 SDHCI_PCI_DEVICE(RICOH, R5C822, ricoh), 1822 SDHCI_PCI_DEVICE(RICOH, R5C843, ricoh_mmc), 1823 SDHCI_PCI_DEVICE(RICOH, R5CE822, ricoh_mmc), 1824 SDHCI_PCI_DEVICE(RICOH, R5CE823, ricoh_mmc), 1825 SDHCI_PCI_DEVICE(ENE, CB712_SD, ene_712), 1826 SDHCI_PCI_DEVICE(ENE, CB712_SD_2, ene_712), 1827 SDHCI_PCI_DEVICE(ENE, CB714_SD, ene_714), 1828 SDHCI_PCI_DEVICE(ENE, CB714_SD_2, ene_714), 1829 SDHCI_PCI_DEVICE(MARVELL, 88ALP01_SD, cafe), 1830 SDHCI_PCI_DEVICE(JMICRON, JMB38X_SD, jmicron), 1831 SDHCI_PCI_DEVICE(JMICRON, JMB38X_MMC, jmicron), 1832 SDHCI_PCI_DEVICE(JMICRON, JMB388_SD, jmicron), 1833 SDHCI_PCI_DEVICE(JMICRON, JMB388_ESD, jmicron), 1834 SDHCI_PCI_DEVICE(SYSKONNECT, 8000, syskt), 1835 SDHCI_PCI_DEVICE(VIA, 95D0, via), 1836 SDHCI_PCI_DEVICE(REALTEK, 5250, rtsx), 1837 SDHCI_PCI_DEVICE(INTEL, QRK_SD, intel_qrk), 1838 SDHCI_PCI_DEVICE(INTEL, MRST_SD0, intel_mrst_hc0), 1839 SDHCI_PCI_DEVICE(INTEL, MRST_SD1, intel_mrst_hc1_hc2), 1840 SDHCI_PCI_DEVICE(INTEL, MRST_SD2, intel_mrst_hc1_hc2), 1841 SDHCI_PCI_DEVICE(INTEL, MFD_SD, intel_mfd_sd), 1842 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO1, intel_mfd_sdio), 1843 SDHCI_PCI_DEVICE(INTEL, MFD_SDIO2, intel_mfd_sdio), 1844 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC0, intel_mfd_emmc), 1845 SDHCI_PCI_DEVICE(INTEL, MFD_EMMC1, intel_mfd_emmc), 1846 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO0, intel_pch_sdio), 1847 SDHCI_PCI_DEVICE(INTEL, PCH_SDIO1, intel_pch_sdio), 1848 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC, intel_byt_emmc), 1849 SDHCI_PCI_SUBDEVICE(INTEL, BYT_SDIO, NI, 7884, ni_byt_sdio), 1850 SDHCI_PCI_DEVICE(INTEL, BYT_SDIO, intel_byt_sdio), 1851 SDHCI_PCI_DEVICE(INTEL, BYT_SD, intel_byt_sd), 1852 SDHCI_PCI_DEVICE(INTEL, BYT_EMMC2, intel_byt_emmc), 1853 SDHCI_PCI_DEVICE(INTEL, BSW_EMMC, intel_byt_emmc), 1854 SDHCI_PCI_DEVICE(INTEL, BSW_SDIO, intel_byt_sdio), 1855 SDHCI_PCI_DEVICE(INTEL, BSW_SD, intel_byt_sd), 1856 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO0, intel_mfd_sd), 1857 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO1, intel_mfd_sdio), 1858 SDHCI_PCI_DEVICE(INTEL, CLV_SDIO2, intel_mfd_sdio), 1859 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC0, intel_mfd_emmc), 1860 SDHCI_PCI_DEVICE(INTEL, CLV_EMMC1, intel_mfd_emmc), 1861 SDHCI_PCI_DEVICE(INTEL, MRFLD_MMC, intel_mrfld_mmc), 1862 SDHCI_PCI_DEVICE(INTEL, SPT_EMMC, intel_byt_emmc), 1863 SDHCI_PCI_DEVICE(INTEL, SPT_SDIO, intel_byt_sdio), 1864 SDHCI_PCI_DEVICE(INTEL, SPT_SD, intel_byt_sd), 1865 SDHCI_PCI_DEVICE(INTEL, DNV_EMMC, intel_byt_emmc), 1866 SDHCI_PCI_DEVICE(INTEL, CDF_EMMC, intel_glk_emmc), 1867 SDHCI_PCI_DEVICE(INTEL, BXT_EMMC, intel_byt_emmc), 1868 SDHCI_PCI_DEVICE(INTEL, BXT_SDIO, intel_byt_sdio), 1869 SDHCI_PCI_DEVICE(INTEL, BXT_SD, intel_byt_sd), 1870 SDHCI_PCI_DEVICE(INTEL, BXTM_EMMC, intel_byt_emmc), 1871 SDHCI_PCI_DEVICE(INTEL, BXTM_SDIO, intel_byt_sdio), 1872 SDHCI_PCI_DEVICE(INTEL, BXTM_SD, intel_byt_sd), 1873 SDHCI_PCI_DEVICE(INTEL, APL_EMMC, intel_byt_emmc), 1874 SDHCI_PCI_DEVICE(INTEL, APL_SDIO, intel_byt_sdio), 1875 SDHCI_PCI_DEVICE(INTEL, APL_SD, intel_byt_sd), 1876 SDHCI_PCI_DEVICE(INTEL, GLK_EMMC, intel_glk_emmc), 1877 SDHCI_PCI_DEVICE(INTEL, GLK_SDIO, intel_byt_sdio), 1878 SDHCI_PCI_DEVICE(INTEL, GLK_SD, intel_byt_sd), 1879 SDHCI_PCI_DEVICE(INTEL, CNP_EMMC, intel_glk_emmc), 1880 SDHCI_PCI_DEVICE(INTEL, CNP_SD, intel_byt_sd), 1881 SDHCI_PCI_DEVICE(INTEL, CNPH_SD, intel_byt_sd), 1882 SDHCI_PCI_DEVICE(INTEL, ICP_EMMC, intel_glk_emmc), 1883 SDHCI_PCI_DEVICE(INTEL, ICP_SD, intel_byt_sd), 1884 SDHCI_PCI_DEVICE(INTEL, EHL_EMMC, intel_glk_emmc), 1885 SDHCI_PCI_DEVICE(INTEL, EHL_SD, intel_byt_sd), 1886 SDHCI_PCI_DEVICE(INTEL, CML_EMMC, intel_glk_emmc), 1887 SDHCI_PCI_DEVICE(INTEL, CML_SD, intel_byt_sd), 1888 SDHCI_PCI_DEVICE(INTEL, CMLH_SD, intel_byt_sd), 1889 SDHCI_PCI_DEVICE(INTEL, JSL_EMMC, intel_glk_emmc), 1890 SDHCI_PCI_DEVICE(INTEL, JSL_SD, intel_byt_sd), 1891 SDHCI_PCI_DEVICE(INTEL, LKF_EMMC, intel_glk_emmc), 1892 SDHCI_PCI_DEVICE(INTEL, LKF_SD, intel_byt_sd), 1893 SDHCI_PCI_DEVICE(INTEL, ADL_EMMC, intel_glk_emmc), 1894 SDHCI_PCI_DEVICE(O2, 8120, o2), 1895 SDHCI_PCI_DEVICE(O2, 8220, o2), 1896 SDHCI_PCI_DEVICE(O2, 8221, o2), 1897 SDHCI_PCI_DEVICE(O2, 8320, o2), 1898 SDHCI_PCI_DEVICE(O2, 8321, o2), 1899 SDHCI_PCI_DEVICE(O2, FUJIN2, o2), 1900 SDHCI_PCI_DEVICE(O2, SDS0, o2), 1901 SDHCI_PCI_DEVICE(O2, SDS1, o2), 1902 SDHCI_PCI_DEVICE(O2, SEABIRD0, o2), 1903 SDHCI_PCI_DEVICE(O2, SEABIRD1, o2), 1904 SDHCI_PCI_DEVICE(ARASAN, PHY_EMMC, arasan), 1905 SDHCI_PCI_DEVICE(SYNOPSYS, DWC_MSHC, snps), 1906 SDHCI_PCI_DEVICE(GLI, 9750, gl9750), 1907 SDHCI_PCI_DEVICE(GLI, 9755, gl9755), 1908 SDHCI_PCI_DEVICE(GLI, 9763E, gl9763e), 1909 SDHCI_PCI_DEVICE_CLASS(AMD, SYSTEM_SDHCI, PCI_CLASS_MASK, amd), 1910 /* Generic SD host controller */ 1911 {PCI_DEVICE_CLASS(SYSTEM_SDHCI, PCI_CLASS_MASK)}, 1912 { /* end: all zeroes */ }, 1913 }; 1914 1915 MODULE_DEVICE_TABLE(pci, pci_ids); 1916 1917 /*****************************************************************************\ 1918 * * 1919 * SDHCI core callbacks * 1920 * * 1921 \*****************************************************************************/ 1922 1923 int sdhci_pci_enable_dma(struct sdhci_host *host) 1924 { 1925 struct sdhci_pci_slot *slot; 1926 struct pci_dev *pdev; 1927 1928 slot = sdhci_priv(host); 1929 pdev = slot->chip->pdev; 1930 1931 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) && 1932 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && 1933 (host->flags & SDHCI_USE_SDMA)) { 1934 dev_warn(&pdev->dev, "Will use DMA mode even though HW " 1935 "doesn't fully claim to support it.\n"); 1936 } 1937 1938 pci_set_master(pdev); 1939 1940 return 0; 1941 } 1942 1943 static void sdhci_pci_hw_reset(struct sdhci_host *host) 1944 { 1945 struct sdhci_pci_slot *slot = sdhci_priv(host); 1946 1947 if (slot->hw_reset) 1948 slot->hw_reset(host); 1949 } 1950 1951 static const struct sdhci_ops sdhci_pci_ops = { 1952 .set_clock = sdhci_set_clock, 1953 .enable_dma = sdhci_pci_enable_dma, 1954 .set_bus_width = sdhci_set_bus_width, 1955 .reset = sdhci_reset, 1956 .set_uhs_signaling = sdhci_set_uhs_signaling, 1957 .hw_reset = sdhci_pci_hw_reset, 1958 }; 1959 1960 /*****************************************************************************\ 1961 * * 1962 * Suspend/resume * 1963 * * 1964 \*****************************************************************************/ 1965 1966 #ifdef CONFIG_PM_SLEEP 1967 static int sdhci_pci_suspend(struct device *dev) 1968 { 1969 struct sdhci_pci_chip *chip = dev_get_drvdata(dev); 1970 1971 if (!chip) 1972 return 0; 1973 1974 if (chip->fixes && chip->fixes->suspend) 1975 return chip->fixes->suspend(chip); 1976 1977 return sdhci_pci_suspend_host(chip); 1978 } 1979 1980 static int sdhci_pci_resume(struct device *dev) 1981 { 1982 struct sdhci_pci_chip *chip = dev_get_drvdata(dev); 1983 1984 if (!chip) 1985 return 0; 1986 1987 if (chip->fixes && chip->fixes->resume) 1988 return chip->fixes->resume(chip); 1989 1990 return sdhci_pci_resume_host(chip); 1991 } 1992 #endif 1993 1994 #ifdef CONFIG_PM 1995 static int sdhci_pci_runtime_suspend(struct device *dev) 1996 { 1997 struct sdhci_pci_chip *chip = dev_get_drvdata(dev); 1998 1999 if (!chip) 2000 return 0; 2001 2002 if (chip->fixes && chip->fixes->runtime_suspend) 2003 return chip->fixes->runtime_suspend(chip); 2004 2005 return sdhci_pci_runtime_suspend_host(chip); 2006 } 2007 2008 static int sdhci_pci_runtime_resume(struct device *dev) 2009 { 2010 struct sdhci_pci_chip *chip = dev_get_drvdata(dev); 2011 2012 if (!chip) 2013 return 0; 2014 2015 if (chip->fixes && chip->fixes->runtime_resume) 2016 return chip->fixes->runtime_resume(chip); 2017 2018 return sdhci_pci_runtime_resume_host(chip); 2019 } 2020 #endif 2021 2022 static const struct dev_pm_ops sdhci_pci_pm_ops = { 2023 SET_SYSTEM_SLEEP_PM_OPS(sdhci_pci_suspend, sdhci_pci_resume) 2024 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend, 2025 sdhci_pci_runtime_resume, NULL) 2026 }; 2027 2028 /*****************************************************************************\ 2029 * * 2030 * Device probing/removal * 2031 * * 2032 \*****************************************************************************/ 2033 2034 static struct sdhci_pci_slot *sdhci_pci_probe_slot( 2035 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar, 2036 int slotno) 2037 { 2038 struct sdhci_pci_slot *slot; 2039 struct sdhci_host *host; 2040 int ret, bar = first_bar + slotno; 2041 size_t priv_size = chip->fixes ? chip->fixes->priv_size : 0; 2042 2043 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { 2044 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); 2045 return ERR_PTR(-ENODEV); 2046 } 2047 2048 if (pci_resource_len(pdev, bar) < 0x100) { 2049 dev_err(&pdev->dev, "Invalid iomem size. You may " 2050 "experience problems.\n"); 2051 } 2052 2053 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { 2054 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n"); 2055 return ERR_PTR(-ENODEV); 2056 } 2057 2058 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { 2059 dev_err(&pdev->dev, "Unknown interface. Aborting.\n"); 2060 return ERR_PTR(-ENODEV); 2061 } 2062 2063 host = sdhci_alloc_host(&pdev->dev, sizeof(*slot) + priv_size); 2064 if (IS_ERR(host)) { 2065 dev_err(&pdev->dev, "cannot allocate host\n"); 2066 return ERR_CAST(host); 2067 } 2068 2069 slot = sdhci_priv(host); 2070 2071 slot->chip = chip; 2072 slot->host = host; 2073 slot->cd_idx = -1; 2074 2075 host->hw_name = "PCI"; 2076 host->ops = chip->fixes && chip->fixes->ops ? 2077 chip->fixes->ops : 2078 &sdhci_pci_ops; 2079 host->quirks = chip->quirks; 2080 host->quirks2 = chip->quirks2; 2081 2082 host->irq = pdev->irq; 2083 2084 ret = pcim_iomap_regions(pdev, BIT(bar), mmc_hostname(host->mmc)); 2085 if (ret) { 2086 dev_err(&pdev->dev, "cannot request region\n"); 2087 goto cleanup; 2088 } 2089 2090 host->ioaddr = pcim_iomap_table(pdev)[bar]; 2091 2092 if (chip->fixes && chip->fixes->probe_slot) { 2093 ret = chip->fixes->probe_slot(slot); 2094 if (ret) 2095 goto cleanup; 2096 } 2097 2098 host->mmc->pm_caps = MMC_PM_KEEP_POWER; 2099 host->mmc->slotno = slotno; 2100 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP; 2101 2102 if (device_can_wakeup(&pdev->dev)) 2103 host->mmc->pm_caps |= MMC_PM_WAKE_SDIO_IRQ; 2104 2105 if (host->mmc->caps & MMC_CAP_CD_WAKE) 2106 device_init_wakeup(&pdev->dev, true); 2107 2108 if (slot->cd_idx >= 0) { 2109 ret = mmc_gpiod_request_cd(host->mmc, "cd", slot->cd_idx, 2110 slot->cd_override_level, 0); 2111 if (ret && ret != -EPROBE_DEFER) 2112 ret = mmc_gpiod_request_cd(host->mmc, NULL, 2113 slot->cd_idx, 2114 slot->cd_override_level, 2115 0); 2116 if (ret == -EPROBE_DEFER) 2117 goto remove; 2118 2119 if (ret) { 2120 dev_warn(&pdev->dev, "failed to setup card detect gpio\n"); 2121 slot->cd_idx = -1; 2122 } 2123 } 2124 2125 if (chip->fixes && chip->fixes->add_host) 2126 ret = chip->fixes->add_host(slot); 2127 else 2128 ret = sdhci_add_host(host); 2129 if (ret) 2130 goto remove; 2131 2132 /* 2133 * Check if the chip needs a separate GPIO for card detect to wake up 2134 * from runtime suspend. If it is not there, don't allow runtime PM. 2135 */ 2136 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm && slot->cd_idx < 0) 2137 chip->allow_runtime_pm = false; 2138 2139 return slot; 2140 2141 remove: 2142 if (chip->fixes && chip->fixes->remove_slot) 2143 chip->fixes->remove_slot(slot, 0); 2144 2145 cleanup: 2146 sdhci_free_host(host); 2147 2148 return ERR_PTR(ret); 2149 } 2150 2151 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) 2152 { 2153 int dead; 2154 u32 scratch; 2155 2156 dead = 0; 2157 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); 2158 if (scratch == (u32)-1) 2159 dead = 1; 2160 2161 sdhci_remove_host(slot->host, dead); 2162 2163 if (slot->chip->fixes && slot->chip->fixes->remove_slot) 2164 slot->chip->fixes->remove_slot(slot, dead); 2165 2166 sdhci_free_host(slot->host); 2167 } 2168 2169 static void sdhci_pci_runtime_pm_allow(struct device *dev) 2170 { 2171 pm_suspend_ignore_children(dev, 1); 2172 pm_runtime_set_autosuspend_delay(dev, 50); 2173 pm_runtime_use_autosuspend(dev); 2174 pm_runtime_allow(dev); 2175 /* Stay active until mmc core scans for a card */ 2176 pm_runtime_put_noidle(dev); 2177 } 2178 2179 static void sdhci_pci_runtime_pm_forbid(struct device *dev) 2180 { 2181 pm_runtime_forbid(dev); 2182 pm_runtime_get_noresume(dev); 2183 } 2184 2185 static int sdhci_pci_probe(struct pci_dev *pdev, 2186 const struct pci_device_id *ent) 2187 { 2188 struct sdhci_pci_chip *chip; 2189 struct sdhci_pci_slot *slot; 2190 2191 u8 slots, first_bar; 2192 int ret, i; 2193 2194 BUG_ON(pdev == NULL); 2195 BUG_ON(ent == NULL); 2196 2197 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n", 2198 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision); 2199 2200 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); 2201 if (ret) 2202 return ret; 2203 2204 slots = PCI_SLOT_INFO_SLOTS(slots) + 1; 2205 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots); 2206 2207 BUG_ON(slots > MAX_SLOTS); 2208 2209 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); 2210 if (ret) 2211 return ret; 2212 2213 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; 2214 2215 if (first_bar > 5) { 2216 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n"); 2217 return -ENODEV; 2218 } 2219 2220 ret = pcim_enable_device(pdev); 2221 if (ret) 2222 return ret; 2223 2224 chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); 2225 if (!chip) 2226 return -ENOMEM; 2227 2228 chip->pdev = pdev; 2229 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data; 2230 if (chip->fixes) { 2231 chip->quirks = chip->fixes->quirks; 2232 chip->quirks2 = chip->fixes->quirks2; 2233 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm; 2234 } 2235 chip->num_slots = slots; 2236 chip->pm_retune = true; 2237 chip->rpm_retune = true; 2238 2239 pci_set_drvdata(pdev, chip); 2240 2241 if (chip->fixes && chip->fixes->probe) { 2242 ret = chip->fixes->probe(chip); 2243 if (ret) 2244 return ret; 2245 } 2246 2247 slots = chip->num_slots; /* Quirk may have changed this */ 2248 2249 for (i = 0; i < slots; i++) { 2250 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i); 2251 if (IS_ERR(slot)) { 2252 for (i--; i >= 0; i--) 2253 sdhci_pci_remove_slot(chip->slots[i]); 2254 return PTR_ERR(slot); 2255 } 2256 2257 chip->slots[i] = slot; 2258 } 2259 2260 if (chip->allow_runtime_pm) 2261 sdhci_pci_runtime_pm_allow(&pdev->dev); 2262 2263 return 0; 2264 } 2265 2266 static void sdhci_pci_remove(struct pci_dev *pdev) 2267 { 2268 int i; 2269 struct sdhci_pci_chip *chip = pci_get_drvdata(pdev); 2270 2271 if (chip->allow_runtime_pm) 2272 sdhci_pci_runtime_pm_forbid(&pdev->dev); 2273 2274 for (i = 0; i < chip->num_slots; i++) 2275 sdhci_pci_remove_slot(chip->slots[i]); 2276 } 2277 2278 static struct pci_driver sdhci_driver = { 2279 .name = "sdhci-pci", 2280 .id_table = pci_ids, 2281 .probe = sdhci_pci_probe, 2282 .remove = sdhci_pci_remove, 2283 .driver = { 2284 .pm = &sdhci_pci_pm_ops 2285 }, 2286 }; 2287 2288 module_pci_driver(sdhci_driver); 2289 2290 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); 2291 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver"); 2292 MODULE_LICENSE("GPL"); 2293