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sys/dev/sdhci/sdhci_fdt.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 Thomas Skibo 5 * Copyright (c) 2008 Alexander Motin <mav@FreeBSD.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* Generic driver to attach sdhci controllers on simplebus. 30 * Derived mainly from sdhci_pci.c 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bus.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/module.h> 42 #include <sys/mutex.h> 43 #include <sys/resource.h> 44 #include <sys/rman.h> 45 #include <sys/sysctl.h> 46 #include <sys/taskqueue.h> 47 48 #include <machine/bus.h> 49 #include <machine/resource.h> 50 51 #include <dev/fdt/fdt_common.h> 52 #include <dev/ofw/ofw_bus.h> 53 #include <dev/ofw/ofw_bus_subr.h> 54 55 #include <dev/ofw/ofw_subr.h> 56 #include <dev/extres/clk/clk.h> 57 #include <dev/extres/clk/clk_fixed.h> 58 #include <dev/extres/syscon/syscon.h> 59 #include <dev/extres/phy/phy.h> 60 61 #include <dev/mmc/bridge.h> 62 63 #include <dev/sdhci/sdhci.h> 64 65 #include "mmcbr_if.h" 66 #include "sdhci_if.h" 67 68 #include "opt_mmccam.h" 69 70 #include "clkdev_if.h" 71 #include "syscon_if.h" 72 73 #define MAX_SLOTS 6 74 #define SDHCI_FDT_ARMADA38X 1 75 #define SDHCI_FDT_GENERIC 2 76 #define SDHCI_FDT_XLNX_ZY7 3 77 #define SDHCI_FDT_QUALCOMM 4 78 #define SDHCI_FDT_RK3399 5 79 #define SDHCI_FDT_RK3568 6 80 81 #define RK3399_GRF_EMMCCORE_CON0 0xf000 82 #define RK3399_CORECFG_BASECLKFREQ 0xff00 83 #define RK3399_CORECFG_TIMEOUTCLKUNIT (1 << 7) 84 #define RK3399_CORECFG_TUNINGCOUNT 0x3f 85 #define RK3399_GRF_EMMCCORE_CON11 0xf02c 86 #define RK3399_CORECFG_CLOCKMULTIPLIER 0xff 87 88 #define RK3568_EMMC_HOST_CTRL 0x0508 89 #define RK3568_EMMC_EMMC_CTRL 0x052c 90 #define RK3568_EMMC_ATCTRL 0x0540 91 #define RK3568_EMMC_DLL_CTRL 0x0800 92 #define DLL_CTRL_SRST 0x00000001 93 #define DLL_CTRL_START 0x00000002 94 #define DLL_CTRL_START_POINT_DEFAULT 0x00050000 95 #define DLL_CTRL_INCREMENT_DEFAULT 0x00000200 96 97 #define RK3568_EMMC_DLL_RXCLK 0x0804 98 #define DLL_RXCLK_DELAY_ENABLE 0x08000000 99 #define DLL_RXCLK_NO_INV 0x20000000 100 101 #define RK3568_EMMC_DLL_TXCLK 0x0808 102 #define DLL_TXCLK_DELAY_ENABLE 0x08000000 103 #define DLL_TXCLK_TAPNUM_DEFAULT 0x00000008 104 #define DLL_TXCLK_TAPNUM_FROM_SW 0x01000000 105 106 #define RK3568_EMMC_DLL_STRBIN 0x080c 107 #define DLL_STRBIN_DELAY_ENABLE 0x08000000 108 #define DLL_STRBIN_TAPNUM_DEFAULT 0x00000008 109 #define DLL_STRBIN_TAPNUM_FROM_SW 0x01000000 110 111 #define RK3568_EMMC_DLL_STATUS0 0x0840 112 #define DLL_STATUS0_DLL_LOCK 0x00000100 113 #define DLL_STATUS0_DLL_TIMEOUT 0x00000200 114 115 #define LOWEST_SET_BIT(mask) ((((mask) - 1) & (mask)) ^ (mask)) 116 #define SHIFTIN(x, mask) ((x) * LOWEST_SET_BIT(mask)) 117 118 #define EMMCCARDCLK_ID 1000 119 120 static struct ofw_compat_data compat_data[] = { 121 { "marvell,armada-380-sdhci", SDHCI_FDT_ARMADA38X }, 122 { "sdhci_generic", SDHCI_FDT_GENERIC }, 123 { "qcom,sdhci-msm-v4", SDHCI_FDT_QUALCOMM }, 124 { "rockchip,rk3399-sdhci-5.1", SDHCI_FDT_RK3399 }, 125 { "xlnx,zy7_sdhci", SDHCI_FDT_XLNX_ZY7 }, 126 { "rockchip,rk3568-dwcmshc", SDHCI_FDT_RK3568 }, 127 { NULL, 0 } 128 }; 129 130 struct sdhci_fdt_softc { 131 device_t dev; /* Controller device */ 132 u_int quirks; /* Chip specific quirks */ 133 u_int caps; /* If we override SDHCI_CAPABILITIES */ 134 uint32_t max_clk; /* Max possible freq */ 135 uint8_t sdma_boundary; /* If we override the SDMA boundary */ 136 struct resource *irq_res; /* IRQ resource */ 137 void *intrhand; /* Interrupt handle */ 138 139 int num_slots; /* Number of slots on this controller*/ 140 struct sdhci_slot slots[MAX_SLOTS]; 141 struct resource *mem_res[MAX_SLOTS]; /* Memory resource */ 142 143 bool wp_inverted; /* WP pin is inverted */ 144 bool no_18v; /* No 1.8V support */ 145 146 clk_t clk_xin; /* xin24m fixed clock */ 147 clk_t clk_ahb; /* ahb clock */ 148 clk_t clk_core; /* core clock */ 149 phy_t phy; /* phy to be used */ 150 }; 151 152 struct rk3399_emmccardclk_sc { 153 device_t clkdev; 154 bus_addr_t reg; 155 }; 156 157 static int 158 rk3399_emmccardclk_init(struct clknode *clk, device_t dev) 159 { 160 161 clknode_init_parent_idx(clk, 0); 162 return (0); 163 } 164 165 static clknode_method_t rk3399_emmccardclk_clknode_methods[] = { 166 /* Device interface */ 167 CLKNODEMETHOD(clknode_init, rk3399_emmccardclk_init), 168 CLKNODEMETHOD_END 169 }; 170 DEFINE_CLASS_1(rk3399_emmccardclk_clknode, rk3399_emmccardclk_clknode_class, 171 rk3399_emmccardclk_clknode_methods, sizeof(struct rk3399_emmccardclk_sc), 172 clknode_class); 173 174 static int 175 rk3399_ofw_map(struct clkdom *clkdom, uint32_t ncells, 176 phandle_t *cells, struct clknode **clk) 177 { 178 179 if (ncells == 0) 180 *clk = clknode_find_by_id(clkdom, EMMCCARDCLK_ID); 181 else 182 return (ERANGE); 183 184 if (*clk == NULL) 185 return (ENXIO); 186 return (0); 187 } 188 189 static void 190 sdhci_init_rk3399_emmccardclk(device_t dev) 191 { 192 struct clknode_init_def def; 193 struct rk3399_emmccardclk_sc *sc; 194 struct clkdom *clkdom; 195 struct clknode *clk; 196 clk_t clk_parent; 197 bus_addr_t paddr; 198 bus_size_t psize; 199 const char **clknames; 200 phandle_t node; 201 int i, nclocks, ncells, error; 202 203 node = ofw_bus_get_node(dev); 204 205 if (ofw_reg_to_paddr(node, 0, &paddr, &psize, NULL) != 0) { 206 device_printf(dev, "cannot parse 'reg' property\n"); 207 return; 208 } 209 210 error = ofw_bus_parse_xref_list_get_length(node, "clocks", 211 "#clock-cells", &ncells); 212 if (error != 0 || ncells != 2) { 213 device_printf(dev, "couldn't find parent clocks\n"); 214 return; 215 } 216 217 nclocks = ofw_bus_string_list_to_array(node, "clock-output-names", 218 &clknames); 219 /* No clocks to export */ 220 if (nclocks <= 0) 221 return; 222 223 if (nclocks != 1) { 224 device_printf(dev, "Having %d clock instead of 1, aborting\n", 225 nclocks); 226 return; 227 } 228 229 clkdom = clkdom_create(dev); 230 clkdom_set_ofw_mapper(clkdom, rk3399_ofw_map); 231 232 memset(&def, 0, sizeof(def)); 233 def.id = EMMCCARDCLK_ID; 234 def.name = clknames[0]; 235 def.parent_names = malloc(sizeof(char *) * ncells, M_OFWPROP, M_WAITOK); 236 for (i = 0; i < ncells; i++) { 237 error = clk_get_by_ofw_index(dev, 0, i, &clk_parent); 238 if (error != 0) { 239 device_printf(dev, "cannot get clock %d\n", error); 240 return; 241 } 242 def.parent_names[i] = clk_get_name(clk_parent); 243 if (bootverbose) 244 device_printf(dev, "clk parent: %s\n", 245 def.parent_names[i]); 246 clk_release(clk_parent); 247 } 248 def.parent_cnt = ncells; 249 250 clk = clknode_create(clkdom, &rk3399_emmccardclk_clknode_class, &def); 251 if (clk == NULL) { 252 device_printf(dev, "cannot create clknode\n"); 253 return; 254 } 255 256 sc = clknode_get_softc(clk); 257 sc->reg = paddr; 258 sc->clkdev = device_get_parent(dev); 259 260 clknode_register(clkdom, clk); 261 262 if (clkdom_finit(clkdom) != 0) { 263 device_printf(dev, "cannot finalize clkdom initialization\n"); 264 return; 265 } 266 267 if (bootverbose) 268 clkdom_dump(clkdom); 269 } 270 271 static int 272 sdhci_init_rk3399(device_t dev) 273 { 274 struct sdhci_fdt_softc *sc = device_get_softc(dev); 275 struct syscon *grf = NULL; 276 phandle_t node; 277 uint64_t freq; 278 uint32_t mask, val; 279 int error; 280 281 /* Get and activate clocks */ 282 error = clk_get_by_ofw_name(dev, 0, "clk_xin", &sc->clk_xin); 283 if (error != 0) { 284 device_printf(dev, "cannot get xin clock\n"); 285 return (ENXIO); 286 } 287 error = clk_enable(sc->clk_xin); 288 if (error != 0) { 289 device_printf(dev, "cannot enable xin clock\n"); 290 return (ENXIO); 291 } 292 error = clk_get_freq(sc->clk_xin, &freq); 293 if (error != 0) { 294 device_printf(dev, "cannot get xin clock frequency\n"); 295 return (ENXIO); 296 } 297 error = clk_get_by_ofw_name(dev, 0, "clk_ahb", &sc->clk_ahb); 298 if (error != 0) { 299 device_printf(dev, "cannot get ahb clock\n"); 300 return (ENXIO); 301 } 302 error = clk_enable(sc->clk_ahb); 303 if (error != 0) { 304 device_printf(dev, "cannot enable ahb clock\n"); 305 return (ENXIO); 306 } 307 308 /* Register clock */ 309 sdhci_init_rk3399_emmccardclk(dev); 310 311 /* Enable PHY */ 312 error = phy_get_by_ofw_name(dev, 0, "phy_arasan", &sc->phy); 313 if (error != 0) { 314 device_printf(dev, "Could not get phy\n"); 315 return (ENXIO); 316 } 317 error = phy_enable(sc->phy); 318 if (error != 0) { 319 device_printf(dev, "Could not enable phy\n"); 320 return (ENXIO); 321 } 322 /* Get syscon */ 323 node = ofw_bus_get_node(dev); 324 if (OF_hasprop(node, "arasan,soc-ctl-syscon") && 325 syscon_get_by_ofw_property(dev, node, 326 "arasan,soc-ctl-syscon", &grf) != 0) { 327 device_printf(dev, "cannot get grf driver handle\n"); 328 return (ENXIO); 329 } 330 331 /* Disable clock multiplier */ 332 mask = RK3399_CORECFG_CLOCKMULTIPLIER; 333 val = 0; 334 SYSCON_WRITE_4(grf, RK3399_GRF_EMMCCORE_CON11, (mask << 16) | val); 335 336 /* Set base clock frequency */ 337 mask = RK3399_CORECFG_BASECLKFREQ; 338 val = SHIFTIN((freq + (1000000 / 2)) / 1000000, 339 RK3399_CORECFG_BASECLKFREQ); 340 SYSCON_WRITE_4(grf, RK3399_GRF_EMMCCORE_CON0, (mask << 16) | val); 341 342 return (0); 343 } 344 345 static uint8_t 346 sdhci_fdt_read_1(device_t dev, struct sdhci_slot *slot, bus_size_t off) 347 { 348 struct sdhci_fdt_softc *sc = device_get_softc(dev); 349 350 return (bus_read_1(sc->mem_res[slot->num], off)); 351 } 352 353 static void 354 sdhci_fdt_write_1(device_t dev, struct sdhci_slot *slot, bus_size_t off, 355 uint8_t val) 356 { 357 struct sdhci_fdt_softc *sc = device_get_softc(dev); 358 359 bus_write_1(sc->mem_res[slot->num], off, val); 360 } 361 362 static uint16_t 363 sdhci_fdt_read_2(device_t dev, struct sdhci_slot *slot, bus_size_t off) 364 { 365 struct sdhci_fdt_softc *sc = device_get_softc(dev); 366 367 return (bus_read_2(sc->mem_res[slot->num], off)); 368 } 369 370 static void 371 sdhci_fdt_write_2(device_t dev, struct sdhci_slot *slot, bus_size_t off, 372 uint16_t val) 373 { 374 struct sdhci_fdt_softc *sc = device_get_softc(dev); 375 376 bus_write_2(sc->mem_res[slot->num], off, val); 377 } 378 379 static uint32_t 380 sdhci_fdt_read_4(device_t dev, struct sdhci_slot *slot, bus_size_t off) 381 { 382 struct sdhci_fdt_softc *sc = device_get_softc(dev); 383 uint32_t val32; 384 385 val32 = bus_read_4(sc->mem_res[slot->num], off); 386 if (off == SDHCI_CAPABILITIES && sc->no_18v) 387 val32 &= ~SDHCI_CAN_VDD_180; 388 389 return (val32); 390 } 391 392 static void 393 sdhci_fdt_write_4(device_t dev, struct sdhci_slot *slot, bus_size_t off, 394 uint32_t val) 395 { 396 struct sdhci_fdt_softc *sc = device_get_softc(dev); 397 398 bus_write_4(sc->mem_res[slot->num], off, val); 399 } 400 401 static void 402 sdhci_fdt_read_multi_4(device_t dev, struct sdhci_slot *slot, 403 bus_size_t off, uint32_t *data, bus_size_t count) 404 { 405 struct sdhci_fdt_softc *sc = device_get_softc(dev); 406 407 bus_read_multi_4(sc->mem_res[slot->num], off, data, count); 408 } 409 410 static void 411 sdhci_fdt_write_multi_4(device_t dev, struct sdhci_slot *slot, 412 bus_size_t off, uint32_t *data, bus_size_t count) 413 { 414 struct sdhci_fdt_softc *sc = device_get_softc(dev); 415 416 bus_write_multi_4(sc->mem_res[slot->num], off, data, count); 417 } 418 419 static void 420 sdhci_fdt_intr(void *arg) 421 { 422 struct sdhci_fdt_softc *sc = (struct sdhci_fdt_softc *)arg; 423 int i; 424 425 for (i = 0; i < sc->num_slots; i++) 426 sdhci_generic_intr(&sc->slots[i]); 427 } 428 429 static int 430 sdhci_fdt_get_ro(device_t bus, device_t dev) 431 { 432 struct sdhci_fdt_softc *sc = device_get_softc(bus); 433 434 return (sdhci_generic_get_ro(bus, dev) ^ sc->wp_inverted); 435 } 436 437 static int 438 sdhci_fdt_set_clock(device_t dev, struct sdhci_slot *slot, int clock) 439 { 440 struct sdhci_fdt_softc *sc = device_get_softc(dev); 441 int32_t val; 442 int i; 443 444 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 445 SDHCI_FDT_RK3568) { 446 if (clock == 400000) 447 clock = 375000; 448 449 if (clock) { 450 clk_set_freq(sc->clk_core, clock, 0); 451 452 if (clock <= 52000000) { 453 bus_write_4(sc->mem_res[slot->num], 454 RK3568_EMMC_DLL_CTRL, 0x0); 455 bus_write_4(sc->mem_res[slot->num], 456 RK3568_EMMC_DLL_RXCLK, DLL_RXCLK_NO_INV); 457 bus_write_4(sc->mem_res[slot->num], 458 RK3568_EMMC_DLL_TXCLK, 0x0); 459 bus_write_4(sc->mem_res[slot->num], 460 RK3568_EMMC_DLL_STRBIN, 0x0); 461 return (clock); 462 } 463 464 bus_write_4(sc->mem_res[slot->num], 465 RK3568_EMMC_DLL_CTRL, DLL_CTRL_START); 466 DELAY(1000); 467 bus_write_4(sc->mem_res[slot->num], 468 RK3568_EMMC_DLL_CTRL, 0); 469 bus_write_4(sc->mem_res[slot->num], 470 RK3568_EMMC_DLL_CTRL, DLL_CTRL_START_POINT_DEFAULT | 471 DLL_CTRL_INCREMENT_DEFAULT | DLL_CTRL_START); 472 for (i = 0; i < 500; i++) { 473 val = bus_read_4(sc->mem_res[slot->num], 474 RK3568_EMMC_DLL_STATUS0); 475 if (val & DLL_STATUS0_DLL_LOCK && 476 !(val & DLL_STATUS0_DLL_TIMEOUT)) 477 break; 478 DELAY(1000); 479 } 480 bus_write_4(sc->mem_res[slot->num], RK3568_EMMC_ATCTRL, 481 (0x1 << 16 | 0x2 << 17 | 0x3 << 19)); 482 bus_write_4(sc->mem_res[slot->num], 483 RK3568_EMMC_DLL_RXCLK, 484 DLL_RXCLK_DELAY_ENABLE | DLL_RXCLK_NO_INV); 485 bus_write_4(sc->mem_res[slot->num], 486 RK3568_EMMC_DLL_TXCLK, DLL_TXCLK_DELAY_ENABLE | 487 DLL_TXCLK_TAPNUM_DEFAULT|DLL_TXCLK_TAPNUM_FROM_SW); 488 bus_write_4(sc->mem_res[slot->num], 489 RK3568_EMMC_DLL_STRBIN, DLL_STRBIN_DELAY_ENABLE | 490 DLL_STRBIN_TAPNUM_DEFAULT | 491 DLL_STRBIN_TAPNUM_FROM_SW); 492 } 493 } 494 return (clock); 495 } 496 497 static int 498 sdhci_fdt_probe(device_t dev) 499 { 500 struct sdhci_fdt_softc *sc = device_get_softc(dev); 501 phandle_t node; 502 pcell_t cid; 503 504 sc->quirks = 0; 505 sc->num_slots = 1; 506 sc->max_clk = 0; 507 508 if (!ofw_bus_status_okay(dev)) 509 return (ENXIO); 510 511 switch (ofw_bus_search_compatible(dev, compat_data)->ocd_data) { 512 case SDHCI_FDT_ARMADA38X: 513 sc->quirks = SDHCI_QUIRK_BROKEN_AUTO_STOP; 514 device_set_desc(dev, "ARMADA38X SDHCI controller"); 515 break; 516 case SDHCI_FDT_GENERIC: 517 device_set_desc(dev, "generic fdt SDHCI controller"); 518 break; 519 case SDHCI_FDT_QUALCOMM: 520 sc->quirks = SDHCI_QUIRK_ALL_SLOTS_NON_REMOVABLE | 521 SDHCI_QUIRK_BROKEN_SDMA_BOUNDARY; 522 sc->sdma_boundary = SDHCI_BLKSZ_SDMA_BNDRY_4K; 523 device_set_desc(dev, "Qualcomm FDT SDHCI controller"); 524 break; 525 case SDHCI_FDT_RK3399: 526 device_set_desc(dev, "Rockchip RK3399 fdt SDHCI controller"); 527 break; 528 case SDHCI_FDT_XLNX_ZY7: 529 sc->quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK; 530 device_set_desc(dev, "Zynq-7000 generic fdt SDHCI controller"); 531 break; 532 case SDHCI_FDT_RK3568: 533 device_set_desc(dev, "Rockchip RK3568 fdt SDHCI controller"); 534 break; 535 default: 536 return (ENXIO); 537 } 538 539 node = ofw_bus_get_node(dev); 540 541 /* Allow dts to patch quirks, slots, and max-frequency. */ 542 if ((OF_getencprop(node, "quirks", &cid, sizeof(cid))) > 0) 543 sc->quirks = cid; 544 if ((OF_getencprop(node, "num-slots", &cid, sizeof(cid))) > 0) 545 sc->num_slots = cid; 546 if ((OF_getencprop(node, "max-frequency", &cid, sizeof(cid))) > 0) 547 sc->max_clk = cid; 548 if (OF_hasprop(node, "no-1-8-v")) 549 sc->no_18v = true; 550 if (OF_hasprop(node, "wp-inverted")) 551 sc->wp_inverted = true; 552 553 return (0); 554 } 555 556 static int 557 sdhci_fdt_attach(device_t dev) 558 { 559 struct sdhci_fdt_softc *sc = device_get_softc(dev); 560 struct sdhci_slot *slot; 561 int err, slots, rid, i; 562 563 sc->dev = dev; 564 565 /* Allocate IRQ. */ 566 rid = 0; 567 sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 568 RF_ACTIVE); 569 if (sc->irq_res == NULL) { 570 device_printf(dev, "Can't allocate IRQ\n"); 571 return (ENOMEM); 572 } 573 574 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 575 SDHCI_FDT_RK3399) { 576 /* Initialize SDHCI */ 577 err = sdhci_init_rk3399(dev); 578 if (err != 0) { 579 device_printf(dev, "Cannot init RK3399 SDHCI\n"); 580 return (err); 581 } 582 } 583 584 if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 585 SDHCI_FDT_RK3568) { 586 /* setup & enable clocks */ 587 if (clk_get_by_ofw_name(dev, 0, "core", &sc->clk_core)) { 588 device_printf(dev, "cannot get core clock\n"); 589 return (ENXIO); 590 } 591 clk_enable(sc->clk_core); 592 } 593 594 /* Scan all slots. */ 595 slots = sc->num_slots; /* number of slots determined in probe(). */ 596 sc->num_slots = 0; 597 for (i = 0; i < slots; i++) { 598 slot = &sc->slots[sc->num_slots]; 599 600 /* Allocate memory. */ 601 rid = 0; 602 sc->mem_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 603 &rid, RF_ACTIVE); 604 if (sc->mem_res[i] == NULL) { 605 device_printf(dev, 606 "Can't allocate memory for slot %d\n", i); 607 continue; 608 } 609 610 slot->quirks = sc->quirks; 611 slot->caps = sc->caps; 612 slot->max_clk = sc->max_clk; 613 slot->sdma_boundary = sc->sdma_boundary; 614 615 if (sdhci_init_slot(dev, slot, i) != 0) 616 continue; 617 618 sc->num_slots++; 619 } 620 device_printf(dev, "%d slot(s) allocated\n", sc->num_slots); 621 622 /* Activate the interrupt */ 623 err = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE, 624 NULL, sdhci_fdt_intr, sc, &sc->intrhand); 625 if (err) { 626 device_printf(dev, "Cannot setup IRQ\n"); 627 return (err); 628 } 629 630 /* Process cards detection. */ 631 for (i = 0; i < sc->num_slots; i++) 632 sdhci_start_slot(&sc->slots[i]); 633 634 return (0); 635 } 636 637 static int 638 sdhci_fdt_detach(device_t dev) 639 { 640 struct sdhci_fdt_softc *sc = device_get_softc(dev); 641 int i; 642 643 bus_generic_detach(dev); 644 bus_teardown_intr(dev, sc->irq_res, sc->intrhand); 645 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq_res), 646 sc->irq_res); 647 648 for (i = 0; i < sc->num_slots; i++) { 649 sdhci_cleanup_slot(&sc->slots[i]); 650 bus_release_resource(dev, SYS_RES_MEMORY, 651 rman_get_rid(sc->mem_res[i]), sc->mem_res[i]); 652 } 653 654 return (0); 655 } 656 657 static device_method_t sdhci_fdt_methods[] = { 658 /* device_if */ 659 DEVMETHOD(device_probe, sdhci_fdt_probe), 660 DEVMETHOD(device_attach, sdhci_fdt_attach), 661 DEVMETHOD(device_detach, sdhci_fdt_detach), 662 663 /* Bus interface */ 664 DEVMETHOD(bus_read_ivar, sdhci_generic_read_ivar), 665 DEVMETHOD(bus_write_ivar, sdhci_generic_write_ivar), 666 667 /* mmcbr_if */ 668 DEVMETHOD(mmcbr_update_ios, sdhci_generic_update_ios), 669 DEVMETHOD(mmcbr_request, sdhci_generic_request), 670 DEVMETHOD(mmcbr_get_ro, sdhci_fdt_get_ro), 671 DEVMETHOD(mmcbr_acquire_host, sdhci_generic_acquire_host), 672 DEVMETHOD(mmcbr_release_host, sdhci_generic_release_host), 673 674 /* SDHCI registers accessors */ 675 DEVMETHOD(sdhci_read_1, sdhci_fdt_read_1), 676 DEVMETHOD(sdhci_read_2, sdhci_fdt_read_2), 677 DEVMETHOD(sdhci_read_4, sdhci_fdt_read_4), 678 DEVMETHOD(sdhci_read_multi_4, sdhci_fdt_read_multi_4), 679 DEVMETHOD(sdhci_write_1, sdhci_fdt_write_1), 680 DEVMETHOD(sdhci_write_2, sdhci_fdt_write_2), 681 DEVMETHOD(sdhci_write_4, sdhci_fdt_write_4), 682 DEVMETHOD(sdhci_write_multi_4, sdhci_fdt_write_multi_4), 683 DEVMETHOD(sdhci_set_clock, sdhci_fdt_set_clock), 684 685 DEVMETHOD_END 686 }; 687 688 static driver_t sdhci_fdt_driver = { 689 "sdhci_fdt", 690 sdhci_fdt_methods, 691 sizeof(struct sdhci_fdt_softc), 692 }; 693 694 DRIVER_MODULE(sdhci_fdt, simplebus, sdhci_fdt_driver, NULL, NULL); 695 SDHCI_DEPEND(sdhci_fdt); 696 #ifndef MMCCAM 697 MMC_DECLARE_BRIDGE(sdhci_fdt); 698 #endif
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