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