1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2018 Rubicon Communications, LLC (Netgate) 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Marvell Xenon SDHCI controller driver. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/bus.h> 38 #include <sys/kernel.h> 39 #include <sys/lock.h> 40 #include <sys/module.h> 41 #include <sys/mutex.h> 42 #include <sys/resource.h> 43 #include <sys/rman.h> 44 #include <sys/sysctl.h> 45 #include <sys/taskqueue.h> 46 47 #include <machine/bus.h> 48 #include <machine/resource.h> 49 50 #include <dev/extres/regulator/regulator.h> 51 52 #include <dev/mmc/bridge.h> 53 #include <dev/mmc/mmcbrvar.h> 54 #include <dev/mmc/mmcreg.h> 55 56 #include <dev/sdhci/sdhci.h> 57 #include <dev/sdhci/sdhci_xenon.h> 58 59 #include "mmcbr_if.h" 60 #include "sdhci_if.h" 61 62 #include "opt_mmccam.h" 63 #include "opt_soc.h" 64 65 #define MAX_SLOTS 6 66 67 static uint8_t 68 sdhci_xenon_read_1(device_t dev, struct sdhci_slot *slot __unused, 69 bus_size_t off) 70 { 71 struct sdhci_xenon_softc *sc = device_get_softc(dev); 72 73 return (bus_read_1(sc->mem_res, off)); 74 } 75 76 static void 77 sdhci_xenon_write_1(device_t dev, struct sdhci_slot *slot __unused, 78 bus_size_t off, uint8_t val) 79 { 80 struct sdhci_xenon_softc *sc = device_get_softc(dev); 81 82 bus_write_1(sc->mem_res, off, val); 83 } 84 85 static uint16_t 86 sdhci_xenon_read_2(device_t dev, struct sdhci_slot *slot __unused, 87 bus_size_t off) 88 { 89 struct sdhci_xenon_softc *sc = device_get_softc(dev); 90 91 return (bus_read_2(sc->mem_res, off)); 92 } 93 94 static void 95 sdhci_xenon_write_2(device_t dev, struct sdhci_slot *slot __unused, 96 bus_size_t off, uint16_t val) 97 { 98 struct sdhci_xenon_softc *sc = device_get_softc(dev); 99 100 bus_write_2(sc->mem_res, off, val); 101 } 102 103 static uint32_t 104 sdhci_xenon_read_4(device_t dev, struct sdhci_slot *slot __unused, 105 bus_size_t off) 106 { 107 struct sdhci_xenon_softc *sc = device_get_softc(dev); 108 109 return bus_read_4(sc->mem_res, off); 110 } 111 112 static void 113 sdhci_xenon_write_4(device_t dev, struct sdhci_slot *slot __unused, 114 bus_size_t off, uint32_t val) 115 { 116 struct sdhci_xenon_softc *sc = device_get_softc(dev); 117 118 bus_write_4(sc->mem_res, off, val); 119 } 120 121 static void 122 sdhci_xenon_read_multi_4(device_t dev, struct sdhci_slot *slot __unused, 123 bus_size_t off, uint32_t *data, bus_size_t count) 124 { 125 struct sdhci_xenon_softc *sc = device_get_softc(dev); 126 127 bus_read_multi_4(sc->mem_res, off, data, count); 128 } 129 130 static void 131 sdhci_xenon_write_multi_4(device_t dev, struct sdhci_slot *slot __unused, 132 bus_size_t off, uint32_t *data, bus_size_t count) 133 { 134 struct sdhci_xenon_softc *sc = device_get_softc(dev); 135 136 bus_write_multi_4(sc->mem_res, off, data, count); 137 } 138 139 static void 140 sdhci_xenon_intr(void *arg) 141 { 142 struct sdhci_xenon_softc *sc = (struct sdhci_xenon_softc *)arg; 143 144 sdhci_generic_intr(sc->slot); 145 } 146 147 static int 148 sdhci_xenon_get_ro(device_t bus, device_t dev) 149 { 150 struct sdhci_xenon_softc *sc = device_get_softc(bus); 151 152 return (sdhci_generic_get_ro(bus, dev) ^ sc->wp_inverted); 153 } 154 155 static void 156 sdhci_xenon_set_uhs_timing(device_t brdev, struct sdhci_slot *slot) 157 { 158 const struct mmc_ios *ios; 159 uint16_t hostctrl2; 160 161 if (slot->version < SDHCI_SPEC_300) 162 return; 163 164 mtx_assert(&slot->mtx, MA_OWNED); 165 ios = &slot->host.ios; 166 167 /* Update timing parameteres in SDHCI_HOST_CONTROL2 register. */ 168 hostctrl2 = sdhci_xenon_read_2(brdev, slot, SDHCI_HOST_CONTROL2); 169 hostctrl2 &= ~SDHCI_CTRL2_UHS_MASK; 170 if (ios->clock > SD_SDR50_MAX) { 171 if (ios->timing == bus_timing_mmc_hs400 || 172 ios->timing == bus_timing_mmc_hs400es) 173 hostctrl2 |= XENON_CTRL2_MMC_HS400; 174 else if (ios->timing == bus_timing_mmc_hs200) 175 hostctrl2 |= XENON_CTRL2_MMC_HS200; 176 else 177 hostctrl2 |= SDHCI_CTRL2_UHS_SDR104; 178 } 179 else if (ios->clock > SD_SDR25_MAX) 180 hostctrl2 |= SDHCI_CTRL2_UHS_SDR50; 181 else if (ios->clock > SD_SDR12_MAX) { 182 if (ios->timing == bus_timing_uhs_ddr50 || 183 ios->timing == bus_timing_mmc_ddr52) 184 hostctrl2 |= SDHCI_CTRL2_UHS_DDR50; 185 else 186 hostctrl2 |= SDHCI_CTRL2_UHS_SDR25; 187 } else if (ios->clock > SD_MMC_CARD_ID_FREQUENCY) 188 hostctrl2 |= SDHCI_CTRL2_UHS_SDR12; 189 sdhci_xenon_write_2(brdev, slot, SDHCI_HOST_CONTROL2, hostctrl2); 190 } 191 192 static int 193 sdhci_xenon_phy_init(device_t brdev, struct mmc_ios *ios) 194 { 195 int i; 196 struct sdhci_xenon_softc *sc; 197 uint32_t reg; 198 199 sc = device_get_softc(brdev); 200 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST); 201 reg |= XENON_SAMPL_INV_QSP_PHASE_SELECT; 202 switch (ios->timing) { 203 case bus_timing_normal: 204 case bus_timing_hs: 205 case bus_timing_uhs_sdr12: 206 case bus_timing_uhs_sdr25: 207 case bus_timing_uhs_sdr50: 208 reg |= XENON_TIMING_ADJUST_SLOW_MODE; 209 break; 210 default: 211 reg &= ~XENON_TIMING_ADJUST_SLOW_MODE; 212 } 213 if (sc->slow_mode) 214 reg |= XENON_TIMING_ADJUST_SLOW_MODE; 215 bus_write_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST, reg); 216 217 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST); 218 reg |= XENON_PHY_INITIALIZATION; 219 bus_write_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST, reg); 220 221 /* Wait for the eMMC PHY init. */ 222 for (i = 100; i > 0; i--) { 223 DELAY(100); 224 225 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST); 226 if ((reg & XENON_PHY_INITIALIZATION) == 0) 227 break; 228 } 229 230 if (i == 0) { 231 device_printf(brdev, "eMMC PHY failed to initialize\n"); 232 return (ETIMEDOUT); 233 } 234 235 return (0); 236 } 237 238 static int 239 sdhci_xenon_phy_set(device_t brdev, struct mmc_ios *ios) 240 { 241 struct sdhci_xenon_softc *sc; 242 uint32_t reg; 243 244 sc = device_get_softc(brdev); 245 /* Setup pad, set bit[28] and bits[26:24] */ 246 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL); 247 reg |= (XENON_FC_DQ_RECEN | XENON_FC_CMD_RECEN | 248 XENON_FC_QSP_RECEN | XENON_OEN_QSN); 249 /* All FC_XX_RECEIVCE should be set as CMOS Type */ 250 reg |= XENON_FC_ALL_CMOS_RECEIVER; 251 bus_write_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL, reg); 252 253 /* Set CMD and DQ Pull Up */ 254 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL1); 255 reg |= (XENON_EMMC_FC_CMD_PU | XENON_EMMC_FC_DQ_PU); 256 reg &= ~(XENON_EMMC_FC_CMD_PD | XENON_EMMC_FC_DQ_PD); 257 bus_write_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL1, reg); 258 259 if (ios->timing == bus_timing_normal) 260 return (sdhci_xenon_phy_init(brdev, ios)); 261 262 /* Clear SDIO mode, no SDIO support for now. */ 263 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST); 264 reg &= ~XENON_TIMING_ADJUST_SDIO_MODE; 265 bus_write_4(sc->mem_res, XENON_EMMC_PHY_TIMING_ADJUST, reg); 266 267 /* 268 * Set preferred ZNR and ZPR value. 269 * The ZNR and ZPR value vary between different boards. 270 * Define them both in the DTS for the board! 271 */ 272 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL2); 273 reg &= ~((XENON_ZNR_MASK << XENON_ZNR_SHIFT) | XENON_ZPR_MASK); 274 reg |= ((sc->znr << XENON_ZNR_SHIFT) | sc->zpr); 275 bus_write_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL2, reg); 276 277 /* Disable the SD clock to set EMMC_PHY_FUNC_CONTROL. */ 278 reg = bus_read_4(sc->mem_res, SDHCI_CLOCK_CONTROL); 279 reg &= ~SDHCI_CLOCK_CARD_EN; 280 bus_write_4(sc->mem_res, SDHCI_CLOCK_CONTROL, reg); 281 282 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_FUNC_CONTROL); 283 switch (ios->timing) { 284 case bus_timing_mmc_hs400: 285 reg |= (XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) | 286 XENON_CMD_DDR_MODE; 287 reg &= ~XENON_DQ_ASYNC_MODE; 288 break; 289 case bus_timing_uhs_ddr50: 290 case bus_timing_mmc_ddr52: 291 reg |= (XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) | 292 XENON_CMD_DDR_MODE | XENON_DQ_ASYNC_MODE; 293 break; 294 default: 295 reg &= ~((XENON_DQ_DDR_MODE_MASK << XENON_DQ_DDR_MODE_SHIFT) | 296 XENON_CMD_DDR_MODE); 297 reg |= XENON_DQ_ASYNC_MODE; 298 } 299 bus_write_4(sc->mem_res, XENON_EMMC_PHY_FUNC_CONTROL, reg); 300 301 /* Enable SD clock. */ 302 reg = bus_read_4(sc->mem_res, SDHCI_CLOCK_CONTROL); 303 reg |= SDHCI_CLOCK_CARD_EN; 304 bus_write_4(sc->mem_res, SDHCI_CLOCK_CONTROL, reg); 305 306 if (ios->timing == bus_timing_mmc_hs400) 307 bus_write_4(sc->mem_res, XENON_EMMC_PHY_LOGIC_TIMING_ADJUST, 308 XENON_LOGIC_TIMING_VALUE); 309 else { 310 /* Disable both SDHC Data Strobe and Enhanced Strobe. */ 311 reg = bus_read_4(sc->mem_res, XENON_SLOT_EMMC_CTRL); 312 reg &= ~(XENON_ENABLE_DATA_STROBE | XENON_ENABLE_RESP_STROBE); 313 bus_write_4(sc->mem_res, XENON_SLOT_EMMC_CTRL, reg); 314 315 /* Clear Strobe line Pull down or Pull up. */ 316 reg = bus_read_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL1); 317 reg &= ~(XENON_EMMC_FC_QSP_PD | XENON_EMMC_FC_QSP_PU); 318 bus_write_4(sc->mem_res, XENON_EMMC_PHY_PAD_CONTROL1, reg); 319 } 320 321 return (sdhci_xenon_phy_init(brdev, ios)); 322 } 323 324 static int 325 sdhci_xenon_update_ios(device_t brdev, device_t reqdev) 326 { 327 int err; 328 struct sdhci_xenon_softc *sc; 329 struct mmc_ios *ios; 330 struct sdhci_slot *slot; 331 uint32_t reg; 332 333 err = sdhci_generic_update_ios(brdev, reqdev); 334 if (err != 0) 335 return (err); 336 337 sc = device_get_softc(brdev); 338 slot = device_get_ivars(reqdev); 339 ios = &slot->host.ios; 340 341 switch (ios->power_mode) { 342 case power_on: 343 break; 344 case power_off: 345 if (bootverbose) 346 device_printf(sc->dev, "Powering down sd/mmc\n"); 347 348 if (sc->vmmc_supply) 349 regulator_disable(sc->vmmc_supply); 350 if (sc->vqmmc_supply) 351 regulator_disable(sc->vqmmc_supply); 352 break; 353 case power_up: 354 if (bootverbose) 355 device_printf(sc->dev, "Powering up sd/mmc\n"); 356 357 if (sc->vmmc_supply) 358 regulator_enable(sc->vmmc_supply); 359 if (sc->vqmmc_supply) 360 regulator_enable(sc->vqmmc_supply); 361 break; 362 }; 363 364 /* Update the PHY settings. */ 365 if (ios->clock != 0) 366 sdhci_xenon_phy_set(brdev, ios); 367 368 if (ios->clock > SD_MMC_CARD_ID_FREQUENCY) { 369 /* Enable SDCLK_IDLEOFF. */ 370 reg = bus_read_4(sc->mem_res, XENON_SYS_OP_CTRL); 371 reg |= 1 << (XENON_SDCLK_IDLEOFF_ENABLE_SHIFT + sc->slot_id); 372 bus_write_4(sc->mem_res, XENON_SYS_OP_CTRL, reg); 373 } 374 375 return (0); 376 } 377 378 static int 379 sdhci_xenon_switch_vccq(device_t brdev, device_t reqdev) 380 { 381 struct sdhci_xenon_softc *sc; 382 struct sdhci_slot *slot; 383 uint16_t hostctrl2; 384 int uvolt, err; 385 386 slot = device_get_ivars(reqdev); 387 388 if (slot->version < SDHCI_SPEC_300) 389 return (0); 390 391 sc = device_get_softc(brdev); 392 393 if (sc->vqmmc_supply == NULL && !sc->skip_regulators) 394 return (EOPNOTSUPP); 395 396 err = 0; 397 398 hostctrl2 = bus_read_2(sc->mem_res, SDHCI_HOST_CONTROL2); 399 switch (slot->host.ios.vccq) { 400 case vccq_330: 401 if (!(hostctrl2 & SDHCI_CTRL2_S18_ENABLE)) 402 return (0); 403 hostctrl2 &= ~SDHCI_CTRL2_S18_ENABLE; 404 bus_write_2(sc->mem_res, SDHCI_HOST_CONTROL2, hostctrl2); 405 406 if (!sc->skip_regulators) { 407 uvolt = 3300000; 408 err = regulator_set_voltage(sc->vqmmc_supply, 409 uvolt, uvolt); 410 if (err != 0) { 411 device_printf(sc->dev, 412 "Cannot set vqmmc to %d<->%d\n", 413 uvolt, 414 uvolt); 415 return (err); 416 } 417 } 418 419 /* 420 * According to the 'SD Host Controller Simplified 421 * Specification 4.20 the host driver should take more 422 * than 5ms for stable time of host voltage regulator 423 * from changing 1.8V Signaling Enable. 424 */ 425 DELAY(5000); 426 hostctrl2 = bus_read_2(sc->mem_res, SDHCI_HOST_CONTROL2); 427 if (!(hostctrl2 & SDHCI_CTRL2_S18_ENABLE)) 428 return (0); 429 return (EAGAIN); 430 case vccq_180: 431 if (!(slot->host.caps & MMC_CAP_SIGNALING_180)) { 432 return (EINVAL); 433 } 434 if (hostctrl2 & SDHCI_CTRL2_S18_ENABLE) 435 return (0); 436 hostctrl2 |= SDHCI_CTRL2_S18_ENABLE; 437 bus_write_2(sc->mem_res, SDHCI_HOST_CONTROL2, hostctrl2); 438 439 if (!sc->skip_regulators) { 440 uvolt = 1800000; 441 err = regulator_set_voltage(sc->vqmmc_supply, 442 uvolt, uvolt); 443 if (err != 0) { 444 device_printf(sc->dev, 445 "Cannot set vqmmc to %d<->%d\n", 446 uvolt, 447 uvolt); 448 return (err); 449 } 450 } 451 452 /* 453 * According to the 'SD Host Controller Simplified 454 * Specification 4.20 the host driver should take more 455 * than 5ms for stable time of host voltage regulator 456 * from changing 1.8V Signaling Enable. 457 */ 458 DELAY(5000); 459 hostctrl2 = bus_read_2(sc->mem_res, SDHCI_HOST_CONTROL2); 460 if (hostctrl2 & SDHCI_CTRL2_S18_ENABLE) 461 return (0); 462 return (EAGAIN); 463 default: 464 device_printf(brdev, 465 "Attempt to set unsupported signaling voltage\n"); 466 return (EINVAL); 467 } 468 } 469 470 static void 471 sdhci_xenon_parse_prop(device_t dev) 472 { 473 struct sdhci_xenon_softc *sc; 474 uint32_t val; 475 476 sc = device_get_softc(dev); 477 val = 0; 478 479 if (device_get_property(dev, "quirks", 480 &val, sizeof(val), DEVICE_PROP_UINT32) > 0) 481 sc->slot->quirks = val; 482 sc->znr = XENON_ZNR_DEF_VALUE; 483 if (device_get_property(dev, "marvell,xenon-phy-znr", 484 &val, sizeof(val), DEVICE_PROP_UINT32) > 0) 485 sc->znr = val & XENON_ZNR_MASK; 486 sc->zpr = XENON_ZPR_DEF_VALUE; 487 if (device_get_property(dev, "marvell,xenon-phy-zpr", 488 &val, sizeof(val), DEVICE_PROP_UINT32) > 0) 489 sc->zpr = val & XENON_ZPR_MASK; 490 if (device_has_property(dev, "marvell,xenon-phy-slow-mode")) 491 sc->slow_mode = true; 492 } 493 494 int 495 sdhci_xenon_attach(device_t dev) 496 { 497 struct sdhci_xenon_softc *sc = device_get_softc(dev); 498 int err, rid; 499 uint32_t reg; 500 501 sc->dev = dev; 502 sc->slot_id = 0; 503 504 /* Allocate IRQ. */ 505 rid = 0; 506 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 507 RF_ACTIVE); 508 if (sc->irq_res == NULL) { 509 device_printf(dev, "Can't allocate IRQ\n"); 510 return (ENOMEM); 511 } 512 513 /* Allocate memory. */ 514 rid = 0; 515 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 516 &rid, RF_ACTIVE); 517 if (sc->mem_res == NULL) { 518 bus_release_resource(dev, SYS_RES_IRQ, 519 rman_get_rid(sc->irq_res), sc->irq_res); 520 device_printf(dev, "Can't allocate memory for slot\n"); 521 return (ENOMEM); 522 } 523 524 sdhci_xenon_parse_prop(dev); 525 526 sc->slot->max_clk = XENON_MMC_MAX_CLK; 527 if (sc->slot->host.f_max > 0) 528 sc->slot->max_clk = sc->slot->host.f_max; 529 530 if (sdhci_init_slot(dev, sc->slot, 0)) 531 goto fail; 532 533 /* 1.2V signaling is not supported. */ 534 sc->slot->host.caps &= ~MMC_CAP_SIGNALING_120; 535 536 /* Disable UHS in case of the PHY slow mode. */ 537 if (sc->slow_mode) 538 sc->slot->host.caps &= ~MMC_CAP_SIGNALING_180; 539 540 /* Activate the interrupt */ 541 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 542 NULL, sdhci_xenon_intr, sc, &sc->intrhand); 543 if (err) { 544 device_printf(dev, "Cannot setup IRQ\n"); 545 goto fail; 546 } 547 548 /* Disable Auto Clock Gating. */ 549 reg = bus_read_4(sc->mem_res, XENON_SYS_OP_CTRL); 550 reg |= XENON_AUTO_CLKGATE_DISABLE; 551 bus_write_4(sc->mem_res, XENON_SYS_OP_CTRL, reg); 552 553 /* Enable this SD controller. */ 554 reg |= (1 << sc->slot_id); 555 bus_write_4(sc->mem_res, XENON_SYS_OP_CTRL, reg); 556 557 /* Enable Parallel Transfer. */ 558 reg = bus_read_4(sc->mem_res, XENON_SYS_EXT_OP_CTRL); 559 reg |= (1 << sc->slot_id); 560 bus_write_4(sc->mem_res, XENON_SYS_EXT_OP_CTRL, reg); 561 562 /* Enable Auto Clock Gating. */ 563 reg &= ~XENON_AUTO_CLKGATE_DISABLE; 564 bus_write_4(sc->mem_res, XENON_SYS_OP_CTRL, reg); 565 566 /* Disable SDCLK_IDLEOFF before the card initialization. */ 567 reg = bus_read_4(sc->mem_res, XENON_SYS_OP_CTRL); 568 reg &= ~(1 << (XENON_SDCLK_IDLEOFF_ENABLE_SHIFT + sc->slot_id)); 569 bus_write_4(sc->mem_res, XENON_SYS_OP_CTRL, reg); 570 571 /* Mask command conflict errors. */ 572 reg = bus_read_4(sc->mem_res, XENON_SYS_EXT_OP_CTRL); 573 reg |= XENON_MASK_CMD_CONFLICT_ERR; 574 bus_write_4(sc->mem_res, XENON_SYS_EXT_OP_CTRL, reg); 575 576 /* Process cards detection. */ 577 sdhci_start_slot(sc->slot); 578 579 return (0); 580 581 fail: 582 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), 583 sc->irq_res); 584 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem_res), 585 sc->mem_res); 586 free(sc->slot, M_DEVBUF); 587 sc->slot = NULL; 588 589 return (ENXIO); 590 } 591 592 int 593 sdhci_xenon_detach(device_t dev) 594 { 595 struct sdhci_xenon_softc *sc = device_get_softc(dev); 596 597 bus_generic_detach(dev); 598 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 599 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), 600 sc->irq_res); 601 sdhci_cleanup_slot(sc->slot); 602 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem_res), 603 sc->mem_res); 604 free(sc->slot, M_DEVBUF); 605 sc->slot = NULL; 606 607 return (0); 608 } 609 610 static device_method_t sdhci_xenon_methods[] = { 611 /* Bus interface */ 612 DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 613 DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 614 615 /* mmcbr_if */ 616 DEVMETHOD(mmcbr_update_ios, sdhci_xenon_update_ios), 617 DEVMETHOD(mmcbr_request, sdhci_generic_request), 618 DEVMETHOD(mmcbr_get_ro, sdhci_xenon_get_ro), 619 DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 620 DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 621 DEVMETHOD(mmcbr_switch_vccq, sdhci_xenon_switch_vccq), 622 DEVMETHOD(mmcbr_tune, sdhci_generic_tune), 623 DEVMETHOD(mmcbr_retune, sdhci_generic_retune), 624 625 /* SDHCI registers accessors */ 626 DEVMETHOD(sdhci_read_1, sdhci_xenon_read_1), 627 DEVMETHOD(sdhci_read_2, sdhci_xenon_read_2), 628 DEVMETHOD(sdhci_read_4, sdhci_xenon_read_4), 629 DEVMETHOD(sdhci_read_multi_4, sdhci_xenon_read_multi_4), 630 DEVMETHOD(sdhci_write_1, sdhci_xenon_write_1), 631 DEVMETHOD(sdhci_write_2, sdhci_xenon_write_2), 632 DEVMETHOD(sdhci_write_4, sdhci_xenon_write_4), 633 DEVMETHOD(sdhci_write_multi_4, sdhci_xenon_write_multi_4), 634 DEVMETHOD(sdhci_set_uhs_timing, sdhci_xenon_set_uhs_timing), 635 636 DEVMETHOD_END 637 }; 638 639 DEFINE_CLASS_0(sdhci_xenon, sdhci_xenon_driver, sdhci_xenon_methods, 640 sizeof(struct sdhci_xenon_softc)); 641 642 SDHCI_DEPEND(sdhci_xenon); 643 #ifndef MMCCAM 644 MMC_DECLARE_BRIDGE(sdhci_xenon); 645 #endif 646