1 /*- 2 * Copyright (c) 2017 Oleksandr Tymoshenko <gonzo@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include <sys/cdefs.h> 27 __FBSDID("$FreeBSD$"); 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/bus.h> 32 #include <sys/kernel.h> 33 #include <sys/lock.h> 34 #include <sys/module.h> 35 #include <sys/mutex.h> 36 #include <sys/resource.h> 37 #include <sys/rman.h> 38 #include <sys/sysctl.h> 39 #include <sys/taskqueue.h> 40 41 #include <machine/bus.h> 42 #include <machine/resource.h> 43 44 #include <contrib/dev/acpica/include/acpi.h> 45 #include <dev/acpica/acpivar.h> 46 47 #include <dev/mmc/bridge.h> 48 #include <dev/mmc/mmcreg.h> 49 50 #include <dev/sdhci/sdhci.h> 51 52 #include "mmcbr_if.h" 53 #include "sdhci_if.h" 54 55 #define SDHCI_AMD_RESET_DLL_REG 0x908 56 57 static const struct sdhci_acpi_device { 58 const char* hid; 59 int uid; 60 const char *desc; 61 u_int quirks; 62 } sdhci_acpi_devices[] = { 63 { "80860F14", 1, "Intel Bay Trail/Braswell eMMC 4.5/4.5.1 Controller", 64 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 65 SDHCI_QUIRK_WAIT_WHILE_BUSY | 66 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 67 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 68 { "80860F14", 3, "Intel Bay Trail/Braswell SDXC Controller", 69 SDHCI_QUIRK_WAIT_WHILE_BUSY | 70 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 71 { "80860F16", 0, "Intel Bay Trail/Braswell SDXC Controller", 72 SDHCI_QUIRK_WAIT_WHILE_BUSY | 73 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 74 { "80865ACA", 0, "Intel Apollo Lake SDXC Controller", 75 SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */ 76 SDHCI_QUIRK_WAIT_WHILE_BUSY | 77 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 78 { "80865ACC", 0, "Intel Apollo Lake eMMC 5.0 Controller", 79 SDHCI_QUIRK_BROKEN_DMA | /* APL18 erratum */ 80 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 81 SDHCI_QUIRK_WAIT_WHILE_BUSY | 82 SDHCI_QUIRK_MMC_DDR52 | 83 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 84 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 85 { "AMDI0040", 0, "AMD eMMC 5.0 Controller", 86 SDHCI_QUIRK_32BIT_DMA_SIZE | 87 SDHCI_QUIRK_MMC_HS400_IF_CAN_SDR104 }, 88 { NULL, 0, NULL, 0} 89 }; 90 91 static char *sdhci_ids[] = { 92 "80860F14", 93 "80860F16", 94 "80865ACA", 95 "80865ACC", 96 "AMDI0040", 97 NULL 98 }; 99 100 struct sdhci_acpi_softc { 101 struct sdhci_slot slot; 102 struct resource *mem_res; /* Memory resource */ 103 struct resource *irq_res; /* IRQ resource */ 104 void *intrhand; /* Interrupt handle */ 105 const struct sdhci_acpi_device *acpi_dev; 106 }; 107 108 static void sdhci_acpi_intr(void *arg); 109 static int sdhci_acpi_detach(device_t dev); 110 111 static uint8_t 112 sdhci_acpi_read_1(device_t dev, struct sdhci_slot *slot __unused, 113 bus_size_t off) 114 { 115 struct sdhci_acpi_softc *sc = device_get_softc(dev); 116 117 bus_barrier(sc->mem_res, 0, 0xFF, 118 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 119 return bus_read_1(sc->mem_res, off); 120 } 121 122 static void 123 sdhci_acpi_write_1(device_t dev, struct sdhci_slot *slot __unused, 124 bus_size_t off, uint8_t val) 125 { 126 struct sdhci_acpi_softc *sc = device_get_softc(dev); 127 128 bus_barrier(sc->mem_res, 0, 0xFF, 129 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 130 bus_write_1(sc->mem_res, off, val); 131 } 132 133 static uint16_t 134 sdhci_acpi_read_2(device_t dev, struct sdhci_slot *slot __unused, 135 bus_size_t off) 136 { 137 struct sdhci_acpi_softc *sc = device_get_softc(dev); 138 139 bus_barrier(sc->mem_res, 0, 0xFF, 140 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 141 return bus_read_2(sc->mem_res, off); 142 } 143 144 static void 145 sdhci_acpi_write_2(device_t dev, struct sdhci_slot *slot __unused, 146 bus_size_t off, uint16_t val) 147 { 148 struct sdhci_acpi_softc *sc = device_get_softc(dev); 149 150 bus_barrier(sc->mem_res, 0, 0xFF, 151 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 152 bus_write_2(sc->mem_res, off, val); 153 } 154 155 static uint32_t 156 sdhci_acpi_read_4(device_t dev, struct sdhci_slot *slot __unused, 157 bus_size_t off) 158 { 159 struct sdhci_acpi_softc *sc = device_get_softc(dev); 160 161 bus_barrier(sc->mem_res, 0, 0xFF, 162 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 163 return bus_read_4(sc->mem_res, off); 164 } 165 166 static void 167 sdhci_acpi_write_4(device_t dev, struct sdhci_slot *slot __unused, 168 bus_size_t off, uint32_t val) 169 { 170 struct sdhci_acpi_softc *sc = device_get_softc(dev); 171 172 bus_barrier(sc->mem_res, 0, 0xFF, 173 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 174 bus_write_4(sc->mem_res, off, val); 175 } 176 177 static void 178 sdhci_acpi_read_multi_4(device_t dev, struct sdhci_slot *slot __unused, 179 bus_size_t off, uint32_t *data, bus_size_t count) 180 { 181 struct sdhci_acpi_softc *sc = device_get_softc(dev); 182 183 bus_read_multi_stream_4(sc->mem_res, off, data, count); 184 } 185 186 static void 187 sdhci_acpi_write_multi_4(device_t dev, struct sdhci_slot *slot __unused, 188 bus_size_t off, uint32_t *data, bus_size_t count) 189 { 190 struct sdhci_acpi_softc *sc = device_get_softc(dev); 191 192 bus_write_multi_stream_4(sc->mem_res, off, data, count); 193 } 194 195 static void 196 sdhci_acpi_set_uhs_timing(device_t dev, struct sdhci_slot *slot) 197 { 198 const struct sdhci_acpi_softc *sc; 199 const struct sdhci_acpi_device *acpi_dev; 200 const struct mmc_ios *ios; 201 device_t bus; 202 uint16_t old_timing; 203 enum mmc_bus_timing timing; 204 205 bus = slot->bus; 206 old_timing = SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2); 207 old_timing &= SDHCI_CTRL2_UHS_MASK; 208 sdhci_generic_set_uhs_timing(dev, slot); 209 210 sc = device_get_softc(dev); 211 acpi_dev = sc->acpi_dev; 212 /* 213 * AMDI0040 controllers require SDHCI_CTRL2_SAMPLING_CLOCK to be 214 * disabled when switching from HS200 to high speed and to always 215 * be turned on again when tuning for HS400. In the later case, 216 * an AMD-specific DLL reset additionally is needed. 217 */ 218 if (strcmp(acpi_dev->hid, "AMDI0040") == 0 && acpi_dev->uid == 0) { 219 ios = &slot->host.ios; 220 timing = ios->timing; 221 if (old_timing == SDHCI_CTRL2_UHS_SDR104 && 222 timing == bus_timing_hs) 223 SDHCI_WRITE_2(bus, slot, SDHCI_HOST_CONTROL2, 224 SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2) & 225 ~SDHCI_CTRL2_SAMPLING_CLOCK); 226 if (ios->clock > SD_SDR50_MAX && 227 old_timing != SDHCI_CTRL2_MMC_HS400 && 228 timing == bus_timing_mmc_hs400) { 229 SDHCI_WRITE_2(bus, slot, SDHCI_HOST_CONTROL2, 230 SDHCI_READ_2(bus, slot, SDHCI_HOST_CONTROL2) | 231 SDHCI_CTRL2_SAMPLING_CLOCK); 232 SDHCI_WRITE_4(bus, slot, SDHCI_AMD_RESET_DLL_REG, 233 0x40003210); 234 DELAY(20); 235 SDHCI_WRITE_4(bus, slot, SDHCI_AMD_RESET_DLL_REG, 236 0x40033210); 237 } 238 } 239 } 240 241 static const struct sdhci_acpi_device * 242 sdhci_acpi_find_device(device_t dev) 243 { 244 char *hid; 245 int i, uid; 246 ACPI_HANDLE handle; 247 ACPI_STATUS status; 248 int rv; 249 250 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, sdhci_ids, &hid); 251 if (rv > 0) 252 return (NULL); 253 254 handle = acpi_get_handle(dev); 255 status = acpi_GetInteger(handle, "_UID", &uid); 256 if (ACPI_FAILURE(status)) 257 uid = 0; 258 259 for (i = 0; sdhci_acpi_devices[i].hid != NULL; i++) { 260 if (strcmp(sdhci_acpi_devices[i].hid, hid) != 0) 261 continue; 262 if ((sdhci_acpi_devices[i].uid != 0) && 263 (sdhci_acpi_devices[i].uid != uid)) 264 continue; 265 return (&sdhci_acpi_devices[i]); 266 } 267 268 return (NULL); 269 } 270 271 static int 272 sdhci_acpi_probe(device_t dev) 273 { 274 const struct sdhci_acpi_device *acpi_dev; 275 276 acpi_dev = sdhci_acpi_find_device(dev); 277 if (acpi_dev == NULL) 278 return (ENXIO); 279 280 device_set_desc(dev, acpi_dev->desc); 281 282 return (BUS_PROBE_DEFAULT); 283 } 284 285 static int 286 sdhci_acpi_attach(device_t dev) 287 { 288 struct sdhci_acpi_softc *sc = device_get_softc(dev); 289 int rid, err; 290 u_int quirks; 291 const struct sdhci_acpi_device *acpi_dev; 292 293 acpi_dev = sdhci_acpi_find_device(dev); 294 if (acpi_dev == NULL) 295 return (ENXIO); 296 297 sc->acpi_dev = acpi_dev; 298 quirks = acpi_dev->quirks; 299 300 /* Allocate IRQ. */ 301 rid = 0; 302 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 303 RF_ACTIVE); 304 if (sc->irq_res == NULL) { 305 device_printf(dev, "can't allocate IRQ\n"); 306 return (ENOMEM); 307 } 308 309 rid = 0; 310 sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 311 &rid, RF_ACTIVE); 312 if (sc->mem_res == NULL) { 313 device_printf(dev, "can't allocate memory resource for slot\n"); 314 sdhci_acpi_detach(dev); 315 return (ENOMEM); 316 } 317 318 /* 319 * Intel Bay Trail and Braswell eMMC controllers share the same IDs, 320 * but while with these former DDR52 is affected by the VLI54 erratum, 321 * these latter require the timeout clock to be hardcoded to 1 MHz. 322 */ 323 if (strcmp(acpi_dev->hid, "80860F14") == 0 && acpi_dev->uid == 1 && 324 SDHCI_READ_4(dev, &sc->slot, SDHCI_CAPABILITIES) == 0x446cc8b2 && 325 SDHCI_READ_4(dev, &sc->slot, SDHCI_CAPABILITIES2) == 0x00000807) 326 quirks |= SDHCI_QUIRK_MMC_DDR52 | SDHCI_QUIRK_DATA_TIMEOUT_1MHZ; 327 quirks &= ~sdhci_quirk_clear; 328 quirks |= sdhci_quirk_set; 329 sc->slot.quirks = quirks; 330 331 err = sdhci_init_slot(dev, &sc->slot, 0); 332 if (err) { 333 device_printf(dev, "failed to init slot\n"); 334 sdhci_acpi_detach(dev); 335 return (err); 336 } 337 338 /* Activate the interrupt */ 339 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 340 NULL, sdhci_acpi_intr, sc, &sc->intrhand); 341 if (err) { 342 device_printf(dev, "can't setup IRQ\n"); 343 sdhci_acpi_detach(dev); 344 return (err); 345 } 346 347 /* Process cards detection. */ 348 sdhci_start_slot(&sc->slot); 349 350 return (0); 351 } 352 353 static int 354 sdhci_acpi_detach(device_t dev) 355 { 356 struct sdhci_acpi_softc *sc = device_get_softc(dev); 357 358 if (sc->intrhand) 359 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 360 if (sc->irq_res) 361 bus_release_resource(dev, SYS_RES_IRQ, 362 rman_get_rid(sc->irq_res), sc->irq_res); 363 364 if (sc->mem_res) { 365 sdhci_cleanup_slot(&sc->slot); 366 bus_release_resource(dev, SYS_RES_MEMORY, 367 rman_get_rid(sc->mem_res), sc->mem_res); 368 } 369 370 return (0); 371 } 372 373 static int 374 sdhci_acpi_shutdown(device_t dev) 375 { 376 377 return (0); 378 } 379 380 static int 381 sdhci_acpi_suspend(device_t dev) 382 { 383 struct sdhci_acpi_softc *sc = device_get_softc(dev); 384 int err; 385 386 err = bus_generic_suspend(dev); 387 if (err) 388 return (err); 389 sdhci_generic_suspend(&sc->slot); 390 return (0); 391 } 392 393 static int 394 sdhci_acpi_resume(device_t dev) 395 { 396 struct sdhci_acpi_softc *sc = device_get_softc(dev); 397 int err; 398 399 sdhci_generic_resume(&sc->slot); 400 err = bus_generic_resume(dev); 401 if (err) 402 return (err); 403 return (0); 404 } 405 406 static void 407 sdhci_acpi_intr(void *arg) 408 { 409 struct sdhci_acpi_softc *sc = (struct sdhci_acpi_softc *)arg; 410 411 sdhci_generic_intr(&sc->slot); 412 } 413 414 static device_method_t sdhci_methods[] = { 415 /* device_if */ 416 DEVMETHOD(device_probe, sdhci_acpi_probe), 417 DEVMETHOD(device_attach, sdhci_acpi_attach), 418 DEVMETHOD(device_detach, sdhci_acpi_detach), 419 DEVMETHOD(device_shutdown, sdhci_acpi_shutdown), 420 DEVMETHOD(device_suspend, sdhci_acpi_suspend), 421 DEVMETHOD(device_resume, sdhci_acpi_resume), 422 423 /* Bus interface */ 424 DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 425 DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 426 427 /* mmcbr_if */ 428 DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), 429 DEVMETHOD(mmcbr_switch_vccq, sdhci_generic_switch_vccq), 430 DEVMETHOD(mmcbr_tune, sdhci_generic_tune), 431 DEVMETHOD(mmcbr_retune, sdhci_generic_retune), 432 DEVMETHOD(mmcbr_request, sdhci_generic_request), 433 DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro), 434 DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 435 DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 436 437 /* SDHCI accessors */ 438 DEVMETHOD(sdhci_read_1, sdhci_acpi_read_1), 439 DEVMETHOD(sdhci_read_2, sdhci_acpi_read_2), 440 DEVMETHOD(sdhci_read_4, sdhci_acpi_read_4), 441 DEVMETHOD(sdhci_read_multi_4, sdhci_acpi_read_multi_4), 442 DEVMETHOD(sdhci_write_1, sdhci_acpi_write_1), 443 DEVMETHOD(sdhci_write_2, sdhci_acpi_write_2), 444 DEVMETHOD(sdhci_write_4, sdhci_acpi_write_4), 445 DEVMETHOD(sdhci_write_multi_4, sdhci_acpi_write_multi_4), 446 DEVMETHOD(sdhci_set_uhs_timing, sdhci_acpi_set_uhs_timing), 447 448 DEVMETHOD_END 449 }; 450 451 static driver_t sdhci_acpi_driver = { 452 "sdhci_acpi", 453 sdhci_methods, 454 sizeof(struct sdhci_acpi_softc), 455 }; 456 static devclass_t sdhci_acpi_devclass; 457 458 DRIVER_MODULE(sdhci_acpi, acpi, sdhci_acpi_driver, sdhci_acpi_devclass, NULL, 459 NULL); 460 MODULE_DEPEND(sdhci_acpi, sdhci, 1, 1, 1); 461 462 #ifndef MMCCAM 463 MMC_DECLARE_BRIDGE(sdhci_acpi); 464 #endif 465