1 /*- 2 * Copyright (c) 2008 Alexander Motin <mav@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 <dev/pci/pcireg.h> 42 #include <dev/pci/pcivar.h> 43 44 #include <machine/bus.h> 45 #include <machine/resource.h> 46 47 #include <dev/mmc/bridge.h> 48 49 #include <dev/sdhci/sdhci.h> 50 51 #include "mmcbr_if.h" 52 #include "sdhci_if.h" 53 54 /* 55 * PCI registers 56 */ 57 #define PCI_SDHCI_IFPIO 0x00 58 #define PCI_SDHCI_IFDMA 0x01 59 #define PCI_SDHCI_IFVENDOR 0x02 60 61 #define PCI_SLOT_INFO 0x40 /* 8 bits */ 62 #define PCI_SLOT_INFO_SLOTS(x) (((x >> 4) & 7) + 1) 63 #define PCI_SLOT_INFO_FIRST_BAR(x) ((x) & 7) 64 65 /* 66 * RICOH specific PCI registers 67 */ 68 #define SDHC_PCI_MODE_KEY 0xf9 69 #define SDHC_PCI_MODE 0x150 70 #define SDHC_PCI_MODE_SD20 0x10 71 #define SDHC_PCI_BASE_FREQ_KEY 0xfc 72 #define SDHC_PCI_BASE_FREQ 0xe1 73 74 static const struct sdhci_device { 75 uint32_t model; 76 uint16_t subvendor; 77 const char *desc; 78 u_int quirks; 79 } sdhci_devices[] = { 80 { 0x08221180, 0xffff, "RICOH R5C822 SD", 81 SDHCI_QUIRK_FORCE_DMA }, 82 { 0xe8221180, 0xffff, "RICOH R5CE822 SD", 83 SDHCI_QUIRK_FORCE_DMA | 84 SDHCI_QUIRK_LOWER_FREQUENCY }, 85 { 0xe8231180, 0xffff, "RICOH R5CE823 SD", 86 SDHCI_QUIRK_LOWER_FREQUENCY }, 87 { 0x8034104c, 0xffff, "TI XX21/XX11 SD", 88 SDHCI_QUIRK_FORCE_DMA }, 89 { 0x05501524, 0xffff, "ENE CB712 SD", 90 SDHCI_QUIRK_BROKEN_TIMINGS }, 91 { 0x05511524, 0xffff, "ENE CB712 SD 2", 92 SDHCI_QUIRK_BROKEN_TIMINGS }, 93 { 0x07501524, 0xffff, "ENE CB714 SD", 94 SDHCI_QUIRK_RESET_ON_IOS | 95 SDHCI_QUIRK_BROKEN_TIMINGS }, 96 { 0x07511524, 0xffff, "ENE CB714 SD 2", 97 SDHCI_QUIRK_RESET_ON_IOS | 98 SDHCI_QUIRK_BROKEN_TIMINGS }, 99 { 0x410111ab, 0xffff, "Marvell CaFe SD", 100 SDHCI_QUIRK_INCR_TIMEOUT_CONTROL }, 101 { 0x2381197B, 0xffff, "JMicron JMB38X SD", 102 SDHCI_QUIRK_32BIT_DMA_SIZE | 103 SDHCI_QUIRK_RESET_AFTER_REQUEST }, 104 { 0x16bc14e4, 0xffff, "Broadcom BCM577xx SDXC/MMC Card Reader", 105 SDHCI_QUIRK_BCM577XX_400KHZ_CLKSRC }, 106 { 0x0f148086, 0xffff, "Intel Bay Trail eMMC 4.5 Controller", 107 SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE | 108 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 109 SDHCI_QUIRK_WAIT_WHILE_BUSY | 110 SDHCI_QUIRK_MMC_DDR52 | 111 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 112 SDHCI_QUIRK_PRESET_VALUE_BROKEN}, 113 { 0x0f158086, 0xffff, "Intel Bay Trail SDXC Controller", 114 SDHCI_QUIRK_WAIT_WHILE_BUSY | 115 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 116 { 0x0f508086, 0xffff, "Intel Bay Trail eMMC 4.5 Controller", 117 SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE | 118 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 119 SDHCI_QUIRK_WAIT_WHILE_BUSY | 120 SDHCI_QUIRK_MMC_DDR52 | 121 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 122 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 123 { 0x22948086, 0xffff, "Intel Braswell eMMC 4.5.1 Controller", 124 SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE | 125 SDHCI_QUIRK_DATA_TIMEOUT_1MHZ | 126 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 127 SDHCI_QUIRK_WAIT_WHILE_BUSY | 128 SDHCI_QUIRK_MMC_DDR52 | 129 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 130 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 131 { 0x22968086, 0xffff, "Intel Braswell SDXC Controller", 132 SDHCI_QUIRK_WAIT_WHILE_BUSY | 133 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 134 { 0x5aca8086, 0xffff, "Intel Apollo Lake SDXC Controller", 135 SDHCI_QUIRK_WAIT_WHILE_BUSY | 136 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 137 { 0x5acc8086, 0xffff, "Intel Apollo Lake eMMC 5.0 Controller", 138 SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE | 139 SDHCI_QUIRK_INTEL_POWER_UP_RESET | 140 SDHCI_QUIRK_WAIT_WHILE_BUSY | 141 SDHCI_QUIRK_MMC_DDR52 | 142 SDHCI_QUIRK_CAPS_BIT63_FOR_MMC_HS400 | 143 SDHCI_QUIRK_PRESET_VALUE_BROKEN }, 144 { 0, 0xffff, NULL, 145 0 } 146 }; 147 148 struct sdhci_pci_softc { 149 u_int quirks; /* Chip specific quirks */ 150 struct resource *irq_res; /* IRQ resource */ 151 void *intrhand; /* Interrupt handle */ 152 153 int num_slots; /* Number of slots on this controller */ 154 struct sdhci_slot slots[6]; 155 struct resource *mem_res[6]; /* Memory resource */ 156 uint8_t cfg_freq; /* Saved frequency */ 157 uint8_t cfg_mode; /* Saved mode */ 158 }; 159 160 static int sdhci_enable_msi = 1; 161 SYSCTL_INT(_hw_sdhci, OID_AUTO, enable_msi, CTLFLAG_RDTUN, &sdhci_enable_msi, 162 0, "Enable MSI interrupts"); 163 164 static uint8_t 165 sdhci_pci_read_1(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off) 166 { 167 struct sdhci_pci_softc *sc = device_get_softc(dev); 168 169 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 170 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 171 return bus_read_1(sc->mem_res[slot->num], off); 172 } 173 174 static void 175 sdhci_pci_write_1(device_t dev, struct sdhci_slot *slot __unused, 176 bus_size_t off, uint8_t val) 177 { 178 struct sdhci_pci_softc *sc = device_get_softc(dev); 179 180 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 181 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 182 bus_write_1(sc->mem_res[slot->num], off, val); 183 } 184 185 static uint16_t 186 sdhci_pci_read_2(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off) 187 { 188 struct sdhci_pci_softc *sc = device_get_softc(dev); 189 190 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 191 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 192 return bus_read_2(sc->mem_res[slot->num], off); 193 } 194 195 static void 196 sdhci_pci_write_2(device_t dev, struct sdhci_slot *slot __unused, 197 bus_size_t off, uint16_t val) 198 { 199 struct sdhci_pci_softc *sc = device_get_softc(dev); 200 201 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 202 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 203 bus_write_2(sc->mem_res[slot->num], off, val); 204 } 205 206 static uint32_t 207 sdhci_pci_read_4(device_t dev, struct sdhci_slot *slot __unused, bus_size_t off) 208 { 209 struct sdhci_pci_softc *sc = device_get_softc(dev); 210 211 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 212 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 213 return bus_read_4(sc->mem_res[slot->num], off); 214 } 215 216 static void 217 sdhci_pci_write_4(device_t dev, struct sdhci_slot *slot __unused, 218 bus_size_t off, uint32_t val) 219 { 220 struct sdhci_pci_softc *sc = device_get_softc(dev); 221 222 bus_barrier(sc->mem_res[slot->num], 0, 0xFF, 223 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 224 bus_write_4(sc->mem_res[slot->num], off, val); 225 } 226 227 static void 228 sdhci_pci_read_multi_4(device_t dev, struct sdhci_slot *slot __unused, 229 bus_size_t off, uint32_t *data, bus_size_t count) 230 { 231 struct sdhci_pci_softc *sc = device_get_softc(dev); 232 233 bus_read_multi_stream_4(sc->mem_res[slot->num], off, data, count); 234 } 235 236 static void 237 sdhci_pci_write_multi_4(device_t dev, struct sdhci_slot *slot __unused, 238 bus_size_t off, uint32_t *data, bus_size_t count) 239 { 240 struct sdhci_pci_softc *sc = device_get_softc(dev); 241 242 bus_write_multi_stream_4(sc->mem_res[slot->num], off, data, count); 243 } 244 245 static void sdhci_pci_intr(void *arg); 246 247 static void 248 sdhci_lower_frequency(device_t dev) 249 { 250 struct sdhci_pci_softc *sc = device_get_softc(dev); 251 252 /* 253 * Enable SD2.0 mode. 254 * NB: for RICOH R5CE823, this changes the PCI device ID to 0xe822. 255 */ 256 pci_write_config(dev, SDHC_PCI_MODE_KEY, 0xfc, 1); 257 sc->cfg_mode = pci_read_config(dev, SDHC_PCI_MODE, 1); 258 pci_write_config(dev, SDHC_PCI_MODE, SDHC_PCI_MODE_SD20, 1); 259 pci_write_config(dev, SDHC_PCI_MODE_KEY, 0x00, 1); 260 261 /* 262 * Some SD/MMC cards don't work with the default base 263 * clock frequency of 200 MHz. Lower it to 50 MHz. 264 */ 265 pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x01, 1); 266 sc->cfg_freq = pci_read_config(dev, SDHC_PCI_BASE_FREQ, 1); 267 pci_write_config(dev, SDHC_PCI_BASE_FREQ, 50, 1); 268 pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x00, 1); 269 } 270 271 static void 272 sdhci_restore_frequency(device_t dev) 273 { 274 struct sdhci_pci_softc *sc = device_get_softc(dev); 275 276 /* Restore mode. */ 277 pci_write_config(dev, SDHC_PCI_MODE_KEY, 0xfc, 1); 278 pci_write_config(dev, SDHC_PCI_MODE, sc->cfg_mode, 1); 279 pci_write_config(dev, SDHC_PCI_MODE_KEY, 0x00, 1); 280 281 /* Restore frequency. */ 282 pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x01, 1); 283 pci_write_config(dev, SDHC_PCI_BASE_FREQ, sc->cfg_freq, 1); 284 pci_write_config(dev, SDHC_PCI_BASE_FREQ_KEY, 0x00, 1); 285 } 286 287 static int 288 sdhci_pci_probe(device_t dev) 289 { 290 uint32_t model; 291 uint16_t subvendor; 292 uint8_t class, subclass; 293 int i, result; 294 295 model = (uint32_t)pci_get_device(dev) << 16; 296 model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff; 297 subvendor = pci_get_subvendor(dev); 298 class = pci_get_class(dev); 299 subclass = pci_get_subclass(dev); 300 301 result = ENXIO; 302 for (i = 0; sdhci_devices[i].model != 0; i++) { 303 if (sdhci_devices[i].model == model && 304 (sdhci_devices[i].subvendor == 0xffff || 305 sdhci_devices[i].subvendor == subvendor)) { 306 device_set_desc(dev, sdhci_devices[i].desc); 307 result = BUS_PROBE_DEFAULT; 308 break; 309 } 310 } 311 if (result == ENXIO && class == PCIC_BASEPERIPH && 312 subclass == PCIS_BASEPERIPH_SDHC) { 313 device_set_desc(dev, "Generic SD HCI"); 314 result = BUS_PROBE_GENERIC; 315 } 316 317 return (result); 318 } 319 320 static int 321 sdhci_pci_attach(device_t dev) 322 { 323 struct sdhci_pci_softc *sc = device_get_softc(dev); 324 struct sdhci_slot *slot; 325 uint32_t model; 326 uint16_t subvendor; 327 int bar, err, rid, slots, i; 328 329 model = (uint32_t)pci_get_device(dev) << 16; 330 model |= (uint32_t)pci_get_vendor(dev) & 0x0000ffff; 331 subvendor = pci_get_subvendor(dev); 332 /* Apply chip specific quirks. */ 333 for (i = 0; sdhci_devices[i].model != 0; i++) { 334 if (sdhci_devices[i].model == model && 335 (sdhci_devices[i].subvendor == 0xffff || 336 sdhci_devices[i].subvendor == subvendor)) { 337 sc->quirks = sdhci_devices[i].quirks; 338 break; 339 } 340 } 341 sc->quirks &= ~sdhci_quirk_clear; 342 sc->quirks |= sdhci_quirk_set; 343 /* Some controllers need to be bumped into the right mode. */ 344 if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY) 345 sdhci_lower_frequency(dev); 346 /* Read slots info from PCI registers. */ 347 slots = pci_read_config(dev, PCI_SLOT_INFO, 1); 348 bar = PCI_SLOT_INFO_FIRST_BAR(slots); 349 slots = PCI_SLOT_INFO_SLOTS(slots); 350 if (slots > 6 || bar > 5) { 351 device_printf(dev, "Incorrect slots information (%d, %d).\n", 352 slots, bar); 353 return (EINVAL); 354 } 355 /* Allocate IRQ. */ 356 i = 1; 357 rid = 0; 358 if (sdhci_enable_msi != 0 && pci_alloc_msi(dev, &i) == 0) 359 rid = 1; 360 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 361 RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE)); 362 if (sc->irq_res == NULL) { 363 device_printf(dev, "Can't allocate IRQ\n"); 364 pci_release_msi(dev); 365 return (ENOMEM); 366 } 367 /* Scan all slots. */ 368 for (i = 0; i < slots; i++) { 369 slot = &sc->slots[sc->num_slots]; 370 371 /* Allocate memory. */ 372 rid = PCIR_BAR(bar + i); 373 sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 374 &rid, RF_ACTIVE); 375 if (sc->mem_res[i] == NULL) { 376 device_printf(dev, 377 "Can't allocate memory for slot %d\n", i); 378 continue; 379 } 380 381 slot->quirks = sc->quirks; 382 383 if (sdhci_init_slot(dev, slot, i) != 0) 384 continue; 385 386 sc->num_slots++; 387 } 388 device_printf(dev, "%d slot(s) allocated\n", sc->num_slots); 389 /* Activate the interrupt */ 390 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 391 NULL, sdhci_pci_intr, sc, &sc->intrhand); 392 if (err) 393 device_printf(dev, "Can't setup IRQ\n"); 394 pci_enable_busmaster(dev); 395 /* Process cards detection. */ 396 for (i = 0; i < sc->num_slots; i++) 397 sdhci_start_slot(&sc->slots[i]); 398 399 return (0); 400 } 401 402 static int 403 sdhci_pci_detach(device_t dev) 404 { 405 struct sdhci_pci_softc *sc = device_get_softc(dev); 406 int i; 407 408 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 409 bus_release_resource(dev, SYS_RES_IRQ, 410 rman_get_rid(sc->irq_res), sc->irq_res); 411 pci_release_msi(dev); 412 413 for (i = 0; i < sc->num_slots; i++) { 414 sdhci_cleanup_slot(&sc->slots[i]); 415 bus_release_resource(dev, SYS_RES_MEMORY, 416 rman_get_rid(sc->mem_res[i]), sc->mem_res[i]); 417 } 418 if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY) 419 sdhci_restore_frequency(dev); 420 return (0); 421 } 422 423 static int 424 sdhci_pci_shutdown(device_t dev) 425 { 426 struct sdhci_pci_softc *sc = device_get_softc(dev); 427 428 if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY) 429 sdhci_restore_frequency(dev); 430 return (0); 431 } 432 433 static int 434 sdhci_pci_suspend(device_t dev) 435 { 436 struct sdhci_pci_softc *sc = device_get_softc(dev); 437 int i, err; 438 439 err = bus_generic_suspend(dev); 440 if (err) 441 return (err); 442 for (i = 0; i < sc->num_slots; i++) 443 sdhci_generic_suspend(&sc->slots[i]); 444 return (0); 445 } 446 447 static int 448 sdhci_pci_resume(device_t dev) 449 { 450 struct sdhci_pci_softc *sc = device_get_softc(dev); 451 int i, err; 452 453 for (i = 0; i < sc->num_slots; i++) 454 sdhci_generic_resume(&sc->slots[i]); 455 err = bus_generic_resume(dev); 456 if (err) 457 return (err); 458 if (sc->quirks & SDHCI_QUIRK_LOWER_FREQUENCY) 459 sdhci_lower_frequency(dev); 460 return (0); 461 } 462 463 static void 464 sdhci_pci_intr(void *arg) 465 { 466 struct sdhci_pci_softc *sc = (struct sdhci_pci_softc *)arg; 467 int i; 468 469 for (i = 0; i < sc->num_slots; i++) 470 sdhci_generic_intr(&sc->slots[i]); 471 } 472 473 static device_method_t sdhci_methods[] = { 474 /* device_if */ 475 DEVMETHOD(device_probe, sdhci_pci_probe), 476 DEVMETHOD(device_attach, sdhci_pci_attach), 477 DEVMETHOD(device_detach, sdhci_pci_detach), 478 DEVMETHOD(device_shutdown, sdhci_pci_shutdown), 479 DEVMETHOD(device_suspend, sdhci_pci_suspend), 480 DEVMETHOD(device_resume, sdhci_pci_resume), 481 482 /* Bus interface */ 483 DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 484 DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 485 486 /* mmcbr_if */ 487 DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), 488 DEVMETHOD(mmcbr_switch_vccq, sdhci_generic_switch_vccq), 489 DEVMETHOD(mmcbr_request, sdhci_generic_request), 490 DEVMETHOD(mmcbr_get_ro, sdhci_generic_get_ro), 491 DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 492 DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 493 494 /* SDHCI accessors */ 495 DEVMETHOD(sdhci_read_1, sdhci_pci_read_1), 496 DEVMETHOD(sdhci_read_2, sdhci_pci_read_2), 497 DEVMETHOD(sdhci_read_4, sdhci_pci_read_4), 498 DEVMETHOD(sdhci_read_multi_4, sdhci_pci_read_multi_4), 499 DEVMETHOD(sdhci_write_1, sdhci_pci_write_1), 500 DEVMETHOD(sdhci_write_2, sdhci_pci_write_2), 501 DEVMETHOD(sdhci_write_4, sdhci_pci_write_4), 502 DEVMETHOD(sdhci_write_multi_4, sdhci_pci_write_multi_4), 503 DEVMETHOD(sdhci_set_uhs_timing, sdhci_generic_set_uhs_timing), 504 505 DEVMETHOD_END 506 }; 507 508 static driver_t sdhci_pci_driver = { 509 "sdhci_pci", 510 sdhci_methods, 511 sizeof(struct sdhci_pci_softc), 512 }; 513 static devclass_t sdhci_pci_devclass; 514 515 DRIVER_MODULE(sdhci_pci, pci, sdhci_pci_driver, sdhci_pci_devclass, NULL, 516 NULL); 517 MODULE_DEPEND(sdhci_pci, sdhci, 1, 1, 1); 518 MMC_DECLARE_BRIDGE(sdhci_pci); 519