sunxi_mmc.c revision 1.20
1 /* $NetBSD: sunxi_mmc.c,v 1.20 2018/02/19 20:26:51 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2014-2017 Jared McNeill <jmcneill (at) invisible.ca> 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, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_sunximmc.h" 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: sunxi_mmc.c,v 1.20 2018/02/19 20:26:51 jmcneill Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/device.h> 37 #include <sys/intr.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/gpio.h> 41 42 #include <dev/sdmmc/sdmmcvar.h> 43 #include <dev/sdmmc/sdmmcchip.h> 44 #include <dev/sdmmc/sdmmc_ioreg.h> 45 46 #include <dev/fdt/fdtvar.h> 47 48 #include <arm/sunxi/sunxi_mmc.h> 49 50 #ifdef SUNXI_MMC_DEBUG 51 static int sunxi_mmc_debug = SUNXI_MMC_DEBUG; 52 #define DPRINTF(dev, fmt, ...) \ 53 do { \ 54 if (sunxi_mmc_debug & __BIT(device_unit(dev))) \ 55 device_printf((dev), fmt, ##__VA_ARGS__); \ 56 } while (0) 57 #else 58 #define DPRINTF(dev, fmt, ...) ((void)0) 59 #endif 60 61 enum sunxi_mmc_timing { 62 SUNXI_MMC_TIMING_400K, 63 SUNXI_MMC_TIMING_25M, 64 SUNXI_MMC_TIMING_50M, 65 SUNXI_MMC_TIMING_50M_DDR, 66 SUNXI_MMC_TIMING_50M_DDR_8BIT, 67 }; 68 69 struct sunxi_mmc_delay { 70 u_int output_phase; 71 u_int sample_phase; 72 }; 73 74 static const struct sunxi_mmc_delay sun7i_mmc_delays[] = { 75 [SUNXI_MMC_TIMING_400K] = { 180, 180 }, 76 [SUNXI_MMC_TIMING_25M] = { 180, 75 }, 77 [SUNXI_MMC_TIMING_50M] = { 90, 120 }, 78 [SUNXI_MMC_TIMING_50M_DDR] = { 60, 120 }, 79 [SUNXI_MMC_TIMING_50M_DDR_8BIT] = { 90, 180 }, 80 }; 81 82 static const struct sunxi_mmc_delay sun9i_mmc_delays[] = { 83 [SUNXI_MMC_TIMING_400K] = { 180, 180 }, 84 [SUNXI_MMC_TIMING_25M] = { 180, 75 }, 85 [SUNXI_MMC_TIMING_50M] = { 150, 120 }, 86 [SUNXI_MMC_TIMING_50M_DDR] = { 54, 36 }, 87 [SUNXI_MMC_TIMING_50M_DDR_8BIT] = { 72, 72 }, 88 }; 89 90 #define SUNXI_MMC_NDESC 16 91 92 struct sunxi_mmc_softc; 93 94 static int sunxi_mmc_match(device_t, cfdata_t, void *); 95 static void sunxi_mmc_attach(device_t, device_t, void *); 96 static void sunxi_mmc_attach_i(device_t); 97 98 static int sunxi_mmc_intr(void *); 99 static int sunxi_mmc_dmabounce_setup(struct sunxi_mmc_softc *); 100 static int sunxi_mmc_idma_setup(struct sunxi_mmc_softc *); 101 102 static int sunxi_mmc_host_reset(sdmmc_chipset_handle_t); 103 static uint32_t sunxi_mmc_host_ocr(sdmmc_chipset_handle_t); 104 static int sunxi_mmc_host_maxblklen(sdmmc_chipset_handle_t); 105 static int sunxi_mmc_card_detect(sdmmc_chipset_handle_t); 106 static int sunxi_mmc_write_protect(sdmmc_chipset_handle_t); 107 static int sunxi_mmc_bus_power(sdmmc_chipset_handle_t, uint32_t); 108 static int sunxi_mmc_bus_clock(sdmmc_chipset_handle_t, int, bool); 109 static int sunxi_mmc_bus_width(sdmmc_chipset_handle_t, int); 110 static int sunxi_mmc_bus_rod(sdmmc_chipset_handle_t, int); 111 static int sunxi_mmc_signal_voltage(sdmmc_chipset_handle_t, int); 112 static void sunxi_mmc_exec_command(sdmmc_chipset_handle_t, 113 struct sdmmc_command *); 114 static void sunxi_mmc_card_enable_intr(sdmmc_chipset_handle_t, int); 115 static void sunxi_mmc_card_intr_ack(sdmmc_chipset_handle_t); 116 117 static struct sdmmc_chip_functions sunxi_mmc_chip_functions = { 118 .host_reset = sunxi_mmc_host_reset, 119 .host_ocr = sunxi_mmc_host_ocr, 120 .host_maxblklen = sunxi_mmc_host_maxblklen, 121 .card_detect = sunxi_mmc_card_detect, 122 .write_protect = sunxi_mmc_write_protect, 123 .bus_power = sunxi_mmc_bus_power, 124 .bus_clock_ddr = sunxi_mmc_bus_clock, 125 .bus_width = sunxi_mmc_bus_width, 126 .bus_rod = sunxi_mmc_bus_rod, 127 .signal_voltage = sunxi_mmc_signal_voltage, 128 .exec_command = sunxi_mmc_exec_command, 129 .card_enable_intr = sunxi_mmc_card_enable_intr, 130 .card_intr_ack = sunxi_mmc_card_intr_ack, 131 }; 132 133 struct sunxi_mmc_config { 134 u_int idma_xferlen; 135 u_int flags; 136 #define SUNXI_MMC_FLAG_CALIB_REG 0x01 137 #define SUNXI_MMC_FLAG_NEW_TIMINGS 0x02 138 #define SUNXI_MMC_FLAG_MASK_DATA0 0x04 139 const struct sunxi_mmc_delay *delays; 140 uint32_t dma_ftrglevel; 141 }; 142 143 struct sunxi_mmc_softc { 144 device_t sc_dev; 145 bus_space_tag_t sc_bst; 146 bus_space_handle_t sc_bsh; 147 bus_dma_tag_t sc_dmat; 148 int sc_phandle; 149 150 void *sc_ih; 151 kmutex_t sc_intr_lock; 152 kcondvar_t sc_intr_cv; 153 kcondvar_t sc_idst_cv; 154 155 int sc_mmc_width; 156 int sc_mmc_present; 157 158 device_t sc_sdmmc_dev; 159 160 struct sunxi_mmc_config *sc_config; 161 162 bus_dma_segment_t sc_idma_segs[1]; 163 int sc_idma_nsegs; 164 bus_size_t sc_idma_size; 165 bus_dmamap_t sc_idma_map; 166 int sc_idma_ndesc; 167 void *sc_idma_desc; 168 169 bus_dmamap_t sc_dmabounce_map; 170 void *sc_dmabounce_buf; 171 size_t sc_dmabounce_buflen; 172 173 uint32_t sc_intr_rint; 174 uint32_t sc_idma_idst; 175 176 struct clk *sc_clk_ahb; 177 struct clk *sc_clk_mmc; 178 struct clk *sc_clk_output; 179 struct clk *sc_clk_sample; 180 181 struct fdtbus_reset *sc_rst_ahb; 182 183 struct fdtbus_gpio_pin *sc_gpio_cd; 184 int sc_gpio_cd_inverted; 185 struct fdtbus_gpio_pin *sc_gpio_wp; 186 int sc_gpio_wp_inverted; 187 188 struct fdtbus_regulator *sc_reg_vqmmc; 189 190 struct fdtbus_mmc_pwrseq *sc_pwrseq; 191 192 bool sc_non_removable; 193 bool sc_broken_cd; 194 }; 195 196 CFATTACH_DECL_NEW(sunxi_mmc, sizeof(struct sunxi_mmc_softc), 197 sunxi_mmc_match, sunxi_mmc_attach, NULL, NULL); 198 199 #define MMC_WRITE(sc, reg, val) \ 200 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) 201 #define MMC_READ(sc, reg) \ 202 bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) 203 204 static const struct sunxi_mmc_config sun4i_a10_mmc_config = { 205 .idma_xferlen = 0x2000, 206 .dma_ftrglevel = 0x20070008, 207 .delays = NULL, 208 .flags = 0, 209 }; 210 211 static const struct sunxi_mmc_config sun5i_a13_mmc_config = { 212 .idma_xferlen = 0x10000, 213 .dma_ftrglevel = 0x20070008, 214 .delays = NULL, 215 .flags = 0, 216 }; 217 218 static const struct sunxi_mmc_config sun7i_a20_mmc_config = { 219 .idma_xferlen = 0x2000, 220 .dma_ftrglevel = 0x20070008, 221 .delays = sun7i_mmc_delays, 222 .flags = 0, 223 }; 224 225 static const struct sunxi_mmc_config sun8i_a83t_emmc_config = { 226 .idma_xferlen = 0x10000, 227 .dma_ftrglevel = 0x20070008, 228 .delays = NULL, 229 .flags = SUNXI_MMC_FLAG_NEW_TIMINGS, 230 }; 231 232 static const struct sunxi_mmc_config sun9i_a80_mmc_config = { 233 .idma_xferlen = 0x10000, 234 .dma_ftrglevel = 0x200f0010, 235 .delays = sun9i_mmc_delays, 236 .flags = 0, 237 }; 238 239 static const struct sunxi_mmc_config sun50i_a64_mmc_config = { 240 .idma_xferlen = 0x10000, 241 .dma_ftrglevel = 0x20070008, 242 .delays = NULL, 243 .flags = SUNXI_MMC_FLAG_CALIB_REG | 244 SUNXI_MMC_FLAG_NEW_TIMINGS | 245 SUNXI_MMC_FLAG_MASK_DATA0, 246 }; 247 248 static const struct sunxi_mmc_config sun50i_a64_emmc_config = { 249 .idma_xferlen = 0x2000, 250 .dma_ftrglevel = 0x20070008, 251 .delays = NULL, 252 .flags = SUNXI_MMC_FLAG_CALIB_REG, 253 }; 254 255 static const struct sunxi_mmc_config sun50i_h6_mmc_config = { 256 .idma_xferlen = 0x10000, 257 .dma_ftrglevel = 0x20070008, 258 .delays = NULL, 259 .flags = SUNXI_MMC_FLAG_CALIB_REG | 260 SUNXI_MMC_FLAG_NEW_TIMINGS | 261 SUNXI_MMC_FLAG_MASK_DATA0, 262 }; 263 264 static const struct sunxi_mmc_config sun50i_h6_emmc_config = { 265 .idma_xferlen = 0x2000, 266 .dma_ftrglevel = 0x20070008, 267 .delays = NULL, 268 .flags = SUNXI_MMC_FLAG_CALIB_REG, 269 }; 270 271 static const struct of_compat_data compat_data[] = { 272 { "allwinner,sun4i-a10-mmc", (uintptr_t)&sun4i_a10_mmc_config }, 273 { "allwinner,sun5i-a13-mmc", (uintptr_t)&sun5i_a13_mmc_config }, 274 { "allwinner,sun7i-a20-mmc", (uintptr_t)&sun7i_a20_mmc_config }, 275 { "allwinner,sun8i-a83t-emmc", (uintptr_t)&sun8i_a83t_emmc_config }, 276 { "allwinner,sun9i-a80-mmc", (uintptr_t)&sun9i_a80_mmc_config }, 277 { "allwinner,sun50i-a64-mmc", (uintptr_t)&sun50i_a64_mmc_config }, 278 { "allwinner,sun50i-a64-emmc", (uintptr_t)&sun50i_a64_emmc_config }, 279 { "allwinner,sun50i-h6-mmc", (uintptr_t)&sun50i_h6_mmc_config }, 280 { "allwinner,sun50i-h6-emmc", (uintptr_t)&sun50i_h6_emmc_config }, 281 { NULL } 282 }; 283 284 static int 285 sunxi_mmc_match(device_t parent, cfdata_t cf, void *aux) 286 { 287 struct fdt_attach_args * const faa = aux; 288 289 return of_match_compat_data(faa->faa_phandle, compat_data); 290 } 291 292 static void 293 sunxi_mmc_attach(device_t parent, device_t self, void *aux) 294 { 295 struct sunxi_mmc_softc * const sc = device_private(self); 296 struct fdt_attach_args * const faa = aux; 297 const int phandle = faa->faa_phandle; 298 char intrstr[128]; 299 bus_addr_t addr; 300 bus_size_t size; 301 302 if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { 303 aprint_error(": couldn't get registers\n"); 304 return; 305 } 306 307 sc->sc_clk_ahb = fdtbus_clock_get(phandle, "ahb"); 308 sc->sc_clk_mmc = fdtbus_clock_get(phandle, "mmc"); 309 sc->sc_clk_output = fdtbus_clock_get(phandle, "output"); 310 sc->sc_clk_sample = fdtbus_clock_get(phandle, "sample"); 311 312 #if notyet 313 if (sc->sc_clk_ahb == NULL || sc->sc_clk_mmc == NULL || 314 sc->sc_clk_output == NULL || sc->sc_clk_sample == NULL) { 315 #else 316 if (sc->sc_clk_ahb == NULL || sc->sc_clk_mmc == NULL) { 317 #endif 318 aprint_error(": couldn't get clocks\n"); 319 return; 320 } 321 322 sc->sc_rst_ahb = fdtbus_reset_get(phandle, "ahb"); 323 324 sc->sc_reg_vqmmc = fdtbus_regulator_acquire(phandle, "vqmmc-supply"); 325 326 sc->sc_pwrseq = fdtbus_mmc_pwrseq_get(phandle); 327 328 if (clk_enable(sc->sc_clk_ahb) != 0 || 329 clk_enable(sc->sc_clk_mmc) != 0) { 330 aprint_error(": couldn't enable clocks\n"); 331 return; 332 } 333 334 if (sc->sc_rst_ahb != NULL) { 335 if (fdtbus_reset_deassert(sc->sc_rst_ahb) != 0) { 336 aprint_error(": couldn't de-assert resets\n"); 337 return; 338 } 339 } 340 341 sc->sc_dev = self; 342 sc->sc_phandle = phandle; 343 sc->sc_config = (void *)of_search_compatible(phandle, compat_data)->data; 344 sc->sc_bst = faa->faa_bst; 345 sc->sc_dmat = faa->faa_dmat; 346 mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_BIO); 347 cv_init(&sc->sc_intr_cv, "awinmmcirq"); 348 cv_init(&sc->sc_idst_cv, "awinmmcdma"); 349 350 if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) { 351 aprint_error(": couldn't map registers\n"); 352 return; 353 } 354 355 aprint_naive("\n"); 356 aprint_normal(": SD/MMC controller\n"); 357 358 sc->sc_gpio_cd = fdtbus_gpio_acquire(phandle, "cd-gpios", 359 GPIO_PIN_INPUT); 360 sc->sc_gpio_wp = fdtbus_gpio_acquire(phandle, "wp-gpios", 361 GPIO_PIN_INPUT); 362 363 sc->sc_gpio_cd_inverted = of_hasprop(phandle, "cd-inverted") ? 0 : 1; 364 sc->sc_gpio_wp_inverted = of_hasprop(phandle, "wp-inverted") ? 0 : 1; 365 366 sc->sc_non_removable = of_hasprop(phandle, "non-removable"); 367 sc->sc_broken_cd = of_hasprop(phandle, "broken-cd"); 368 369 if (sunxi_mmc_dmabounce_setup(sc) != 0 || 370 sunxi_mmc_idma_setup(sc) != 0) { 371 aprint_error_dev(self, "failed to setup DMA\n"); 372 return; 373 } 374 375 if (!fdtbus_intr_str(phandle, 0, intrstr, sizeof(intrstr))) { 376 aprint_error_dev(self, "failed to decode interrupt\n"); 377 return; 378 } 379 380 sc->sc_ih = fdtbus_intr_establish(phandle, 0, IPL_BIO, FDT_INTR_MPSAFE, 381 sunxi_mmc_intr, sc); 382 if (sc->sc_ih == NULL) { 383 aprint_error_dev(self, "failed to establish interrupt on %s\n", 384 intrstr); 385 return; 386 } 387 aprint_normal_dev(self, "interrupting on %s\n", intrstr); 388 389 config_interrupts(self, sunxi_mmc_attach_i); 390 } 391 392 static int 393 sunxi_mmc_dmabounce_setup(struct sunxi_mmc_softc *sc) 394 { 395 bus_dma_segment_t ds[1]; 396 int error, rseg; 397 398 sc->sc_dmabounce_buflen = sunxi_mmc_host_maxblklen(sc); 399 error = bus_dmamem_alloc(sc->sc_dmat, sc->sc_dmabounce_buflen, 0, 400 sc->sc_dmabounce_buflen, ds, 1, &rseg, BUS_DMA_WAITOK); 401 if (error) 402 return error; 403 error = bus_dmamem_map(sc->sc_dmat, ds, 1, sc->sc_dmabounce_buflen, 404 &sc->sc_dmabounce_buf, BUS_DMA_WAITOK); 405 if (error) 406 goto free; 407 error = bus_dmamap_create(sc->sc_dmat, sc->sc_dmabounce_buflen, 1, 408 sc->sc_dmabounce_buflen, 0, BUS_DMA_WAITOK, &sc->sc_dmabounce_map); 409 if (error) 410 goto unmap; 411 error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmabounce_map, 412 sc->sc_dmabounce_buf, sc->sc_dmabounce_buflen, NULL, 413 BUS_DMA_WAITOK); 414 if (error) 415 goto destroy; 416 return 0; 417 418 destroy: 419 bus_dmamap_destroy(sc->sc_dmat, sc->sc_dmabounce_map); 420 unmap: 421 bus_dmamem_unmap(sc->sc_dmat, sc->sc_dmabounce_buf, 422 sc->sc_dmabounce_buflen); 423 free: 424 bus_dmamem_free(sc->sc_dmat, ds, rseg); 425 return error; 426 } 427 428 static int 429 sunxi_mmc_idma_setup(struct sunxi_mmc_softc *sc) 430 { 431 int error; 432 433 sc->sc_idma_ndesc = SUNXI_MMC_NDESC; 434 sc->sc_idma_size = sizeof(struct sunxi_mmc_idma_descriptor) * 435 sc->sc_idma_ndesc; 436 error = bus_dmamem_alloc(sc->sc_dmat, sc->sc_idma_size, 0, 437 sc->sc_idma_size, sc->sc_idma_segs, 1, 438 &sc->sc_idma_nsegs, BUS_DMA_WAITOK); 439 if (error) 440 return error; 441 error = bus_dmamem_map(sc->sc_dmat, sc->sc_idma_segs, 442 sc->sc_idma_nsegs, sc->sc_idma_size, 443 &sc->sc_idma_desc, BUS_DMA_WAITOK); 444 if (error) 445 goto free; 446 error = bus_dmamap_create(sc->sc_dmat, sc->sc_idma_size, 1, 447 sc->sc_idma_size, 0, BUS_DMA_WAITOK, &sc->sc_idma_map); 448 if (error) 449 goto unmap; 450 error = bus_dmamap_load(sc->sc_dmat, sc->sc_idma_map, 451 sc->sc_idma_desc, sc->sc_idma_size, NULL, BUS_DMA_WAITOK); 452 if (error) 453 goto destroy; 454 return 0; 455 456 destroy: 457 bus_dmamap_destroy(sc->sc_dmat, sc->sc_idma_map); 458 unmap: 459 bus_dmamem_unmap(sc->sc_dmat, sc->sc_idma_desc, sc->sc_idma_size); 460 free: 461 bus_dmamem_free(sc->sc_dmat, sc->sc_idma_segs, sc->sc_idma_nsegs); 462 return error; 463 } 464 465 static int 466 sunxi_mmc_set_clock(struct sunxi_mmc_softc *sc, u_int freq, bool ddr) 467 { 468 const struct sunxi_mmc_delay *delays; 469 int error, timing; 470 471 if (freq <= 400) { 472 timing = SUNXI_MMC_TIMING_400K; 473 } else if (freq <= 25000) { 474 timing = SUNXI_MMC_TIMING_25M; 475 } else if (freq <= 52000) { 476 if (ddr) { 477 timing = sc->sc_mmc_width == 8 ? 478 SUNXI_MMC_TIMING_50M_DDR_8BIT : 479 SUNXI_MMC_TIMING_50M_DDR; 480 } else { 481 timing = SUNXI_MMC_TIMING_50M; 482 } 483 } else 484 return EINVAL; 485 486 error = clk_set_rate(sc->sc_clk_mmc, (freq * 1000) << ddr); 487 if (error != 0) 488 return error; 489 490 if (sc->sc_config->delays == NULL) 491 return 0; 492 493 delays = &sc->sc_config->delays[timing]; 494 495 if (sc->sc_clk_sample) { 496 error = clk_set_rate(sc->sc_clk_sample, delays->sample_phase); 497 if (error != 0) 498 return error; 499 } 500 if (sc->sc_clk_output) { 501 error = clk_set_rate(sc->sc_clk_output, delays->output_phase); 502 if (error != 0) 503 return error; 504 } 505 506 return 0; 507 } 508 509 static void 510 sunxi_mmc_attach_i(device_t self) 511 { 512 struct sunxi_mmc_softc *sc = device_private(self); 513 struct sdmmcbus_attach_args saa; 514 uint32_t width; 515 516 if (sc->sc_pwrseq) 517 fdtbus_mmc_pwrseq_pre_power_on(sc->sc_pwrseq); 518 519 sunxi_mmc_host_reset(sc); 520 sunxi_mmc_bus_width(sc, 1); 521 sunxi_mmc_set_clock(sc, 400, false); 522 523 if (sc->sc_pwrseq) 524 fdtbus_mmc_pwrseq_post_power_on(sc->sc_pwrseq); 525 526 if (of_getprop_uint32(sc->sc_phandle, "bus-width", &width) != 0) 527 width = 4; 528 529 memset(&saa, 0, sizeof(saa)); 530 saa.saa_busname = "sdmmc"; 531 saa.saa_sct = &sunxi_mmc_chip_functions; 532 saa.saa_sch = sc; 533 saa.saa_dmat = sc->sc_dmat; 534 saa.saa_clkmin = 400; 535 saa.saa_clkmax = 52000; 536 saa.saa_caps = SMC_CAPS_DMA | 537 SMC_CAPS_MULTI_SEG_DMA | 538 SMC_CAPS_AUTO_STOP | 539 SMC_CAPS_SD_HIGHSPEED | 540 SMC_CAPS_MMC_HIGHSPEED | 541 SMC_CAPS_MMC_DDR52 | 542 SMC_CAPS_POLLING; 543 if (width == 4) 544 saa.saa_caps |= SMC_CAPS_4BIT_MODE; 545 if (width == 8) 546 saa.saa_caps |= SMC_CAPS_8BIT_MODE; 547 548 if (sc->sc_gpio_cd) 549 saa.saa_caps |= SMC_CAPS_POLL_CARD_DET; 550 551 sc->sc_sdmmc_dev = config_found(self, &saa, NULL); 552 } 553 554 static int 555 sunxi_mmc_intr(void *priv) 556 { 557 struct sunxi_mmc_softc *sc = priv; 558 uint32_t idst, rint; 559 560 mutex_enter(&sc->sc_intr_lock); 561 idst = MMC_READ(sc, SUNXI_MMC_IDST); 562 rint = MMC_READ(sc, SUNXI_MMC_RINT); 563 if (!idst && !rint) { 564 mutex_exit(&sc->sc_intr_lock); 565 return 0; 566 } 567 MMC_WRITE(sc, SUNXI_MMC_IDST, idst); 568 MMC_WRITE(sc, SUNXI_MMC_RINT, rint); 569 570 DPRINTF(sc->sc_dev, "mmc intr idst=%08X rint=%08X\n", 571 idst, rint); 572 573 if (idst != 0) { 574 sc->sc_idma_idst |= idst; 575 cv_broadcast(&sc->sc_idst_cv); 576 } 577 578 if ((rint & ~SUNXI_MMC_INT_SDIO_INT) != 0) { 579 sc->sc_intr_rint |= (rint & ~SUNXI_MMC_INT_SDIO_INT); 580 cv_broadcast(&sc->sc_intr_cv); 581 } 582 583 if ((rint & SUNXI_MMC_INT_SDIO_INT) != 0) { 584 sdmmc_card_intr(sc->sc_sdmmc_dev); 585 } 586 587 mutex_exit(&sc->sc_intr_lock); 588 589 return 1; 590 } 591 592 static int 593 sunxi_mmc_wait_rint(struct sunxi_mmc_softc *sc, uint32_t mask, 594 int timeout, bool poll) 595 { 596 int retry; 597 int error; 598 599 KASSERT(mutex_owned(&sc->sc_intr_lock)); 600 601 if (sc->sc_intr_rint & mask) 602 return 0; 603 604 if (poll) 605 retry = timeout / hz * 1000; 606 else 607 retry = timeout / hz; 608 609 while (retry > 0) { 610 if (poll) { 611 sc->sc_intr_rint |= MMC_READ(sc, SUNXI_MMC_RINT); 612 } else { 613 error = cv_timedwait(&sc->sc_intr_cv, 614 &sc->sc_intr_lock, hz); 615 if (error && error != EWOULDBLOCK) 616 return error; 617 } 618 if (sc->sc_intr_rint & mask) 619 return 0; 620 if (poll) 621 delay(1000); 622 --retry; 623 } 624 625 return ETIMEDOUT; 626 } 627 628 static int 629 sunxi_mmc_host_reset(sdmmc_chipset_handle_t sch) 630 { 631 struct sunxi_mmc_softc *sc = sch; 632 int retry = 1000; 633 634 DPRINTF(sc->sc_dev, "host reset\n"); 635 636 MMC_WRITE(sc, SUNXI_MMC_GCTRL, 637 MMC_READ(sc, SUNXI_MMC_GCTRL) | SUNXI_MMC_GCTRL_RESET); 638 while (--retry > 0) { 639 if (!(MMC_READ(sc, SUNXI_MMC_GCTRL) & SUNXI_MMC_GCTRL_RESET)) 640 break; 641 delay(100); 642 } 643 644 MMC_WRITE(sc, SUNXI_MMC_TIMEOUT, 0xffffffff); 645 646 MMC_WRITE(sc, SUNXI_MMC_IMASK, 647 SUNXI_MMC_INT_CMD_DONE | SUNXI_MMC_INT_ERROR | 648 SUNXI_MMC_INT_DATA_OVER | SUNXI_MMC_INT_AUTO_CMD_DONE); 649 650 MMC_WRITE(sc, SUNXI_MMC_GCTRL, 651 MMC_READ(sc, SUNXI_MMC_GCTRL) | SUNXI_MMC_GCTRL_INTEN); 652 653 return 0; 654 } 655 656 static uint32_t 657 sunxi_mmc_host_ocr(sdmmc_chipset_handle_t sch) 658 { 659 return MMC_OCR_3_2V_3_3V | MMC_OCR_3_3V_3_4V | MMC_OCR_HCS; 660 } 661 662 static int 663 sunxi_mmc_host_maxblklen(sdmmc_chipset_handle_t sch) 664 { 665 return 8192; 666 } 667 668 static int 669 sunxi_mmc_card_detect(sdmmc_chipset_handle_t sch) 670 { 671 struct sunxi_mmc_softc *sc = sch; 672 673 if (sc->sc_non_removable || sc->sc_broken_cd) { 674 /* 675 * Non-removable or broken card detect flag set in 676 * DT, assume always present 677 */ 678 return 1; 679 } else if (sc->sc_gpio_cd != NULL) { 680 /* Use card detect GPIO */ 681 int v = 0, i; 682 for (i = 0; i < 5; i++) { 683 v += (fdtbus_gpio_read(sc->sc_gpio_cd) ^ 684 sc->sc_gpio_cd_inverted); 685 delay(1000); 686 } 687 if (v == 5) 688 sc->sc_mmc_present = 0; 689 else if (v == 0) 690 sc->sc_mmc_present = 1; 691 return sc->sc_mmc_present; 692 } else { 693 /* Use CARD_PRESENT field of SD_STATUS register */ 694 const uint32_t present = MMC_READ(sc, SUNXI_MMC_STATUS) & 695 SUNXI_MMC_STATUS_CARD_PRESENT; 696 return present != 0; 697 } 698 } 699 700 static int 701 sunxi_mmc_write_protect(sdmmc_chipset_handle_t sch) 702 { 703 struct sunxi_mmc_softc *sc = sch; 704 705 if (sc->sc_gpio_wp == NULL) { 706 return 0; /* no write protect pin, assume rw */ 707 } else { 708 return fdtbus_gpio_read(sc->sc_gpio_wp) ^ 709 sc->sc_gpio_wp_inverted; 710 } 711 } 712 713 static int 714 sunxi_mmc_bus_power(sdmmc_chipset_handle_t sch, uint32_t ocr) 715 { 716 return 0; 717 } 718 719 static int 720 sunxi_mmc_update_clock(struct sunxi_mmc_softc *sc) 721 { 722 uint32_t cmd; 723 int retry; 724 725 DPRINTF(sc->sc_dev, "update clock\n"); 726 727 cmd = SUNXI_MMC_CMD_START | 728 SUNXI_MMC_CMD_UPCLK_ONLY | 729 SUNXI_MMC_CMD_WAIT_PRE_OVER; 730 MMC_WRITE(sc, SUNXI_MMC_CMD, cmd); 731 retry = 0xfffff; 732 while (--retry > 0) { 733 if (!(MMC_READ(sc, SUNXI_MMC_CMD) & SUNXI_MMC_CMD_START)) 734 break; 735 delay(10); 736 } 737 738 if (retry == 0) { 739 aprint_error_dev(sc->sc_dev, "timeout updating clock\n"); 740 DPRINTF(sc->sc_dev, "GCTRL: 0x%08x\n", 741 MMC_READ(sc, SUNXI_MMC_GCTRL)); 742 DPRINTF(sc->sc_dev, "CLKCR: 0x%08x\n", 743 MMC_READ(sc, SUNXI_MMC_CLKCR)); 744 DPRINTF(sc->sc_dev, "TIMEOUT: 0x%08x\n", 745 MMC_READ(sc, SUNXI_MMC_TIMEOUT)); 746 DPRINTF(sc->sc_dev, "WIDTH: 0x%08x\n", 747 MMC_READ(sc, SUNXI_MMC_WIDTH)); 748 DPRINTF(sc->sc_dev, "CMD: 0x%08x\n", 749 MMC_READ(sc, SUNXI_MMC_CMD)); 750 DPRINTF(sc->sc_dev, "MINT: 0x%08x\n", 751 MMC_READ(sc, SUNXI_MMC_MINT)); 752 DPRINTF(sc->sc_dev, "RINT: 0x%08x\n", 753 MMC_READ(sc, SUNXI_MMC_RINT)); 754 DPRINTF(sc->sc_dev, "STATUS: 0x%08x\n", 755 MMC_READ(sc, SUNXI_MMC_STATUS)); 756 return ETIMEDOUT; 757 } 758 759 return 0; 760 } 761 762 static int 763 sunxi_mmc_bus_clock(sdmmc_chipset_handle_t sch, int freq, bool ddr) 764 { 765 struct sunxi_mmc_softc *sc = sch; 766 uint32_t clkcr, gctrl, ntsr; 767 const u_int flags = sc->sc_config->flags; 768 769 clkcr = MMC_READ(sc, SUNXI_MMC_CLKCR); 770 if (clkcr & SUNXI_MMC_CLKCR_CARDCLKON) { 771 clkcr &= ~SUNXI_MMC_CLKCR_CARDCLKON; 772 if (flags & SUNXI_MMC_CLKCR_MASK_DATA0) 773 clkcr |= SUNXI_MMC_CLKCR_MASK_DATA0; 774 MMC_WRITE(sc, SUNXI_MMC_CLKCR, clkcr); 775 if (sunxi_mmc_update_clock(sc) != 0) 776 return 1; 777 if (flags & SUNXI_MMC_CLKCR_MASK_DATA0) { 778 clkcr = MMC_READ(sc, SUNXI_MMC_CLKCR); 779 clkcr &= ~SUNXI_MMC_CLKCR_MASK_DATA0; 780 MMC_WRITE(sc, SUNXI_MMC_CLKCR, clkcr); 781 } 782 } 783 784 if (freq) { 785 786 clkcr &= ~SUNXI_MMC_CLKCR_DIV; 787 clkcr |= __SHIFTIN(ddr, SUNXI_MMC_CLKCR_DIV); 788 MMC_WRITE(sc, SUNXI_MMC_CLKCR, clkcr); 789 790 if (flags & SUNXI_MMC_FLAG_NEW_TIMINGS) { 791 ntsr = MMC_READ(sc, SUNXI_MMC_NTSR); 792 ntsr |= SUNXI_MMC_NTSR_MODE_SELECT; 793 MMC_WRITE(sc, SUNXI_MMC_NTSR, ntsr); 794 } 795 796 if (flags & SUNXI_MMC_FLAG_CALIB_REG) 797 MMC_WRITE(sc, SUNXI_MMC_SAMP_DL, SUNXI_MMC_SAMP_DL_SW_EN); 798 799 if (sunxi_mmc_update_clock(sc) != 0) 800 return 1; 801 802 gctrl = MMC_READ(sc, SUNXI_MMC_GCTRL); 803 if (ddr) 804 gctrl |= SUNXI_MMC_GCTRL_DDR_MODE; 805 else 806 gctrl &= ~SUNXI_MMC_GCTRL_DDR_MODE; 807 MMC_WRITE(sc, SUNXI_MMC_GCTRL, gctrl); 808 809 if (sunxi_mmc_set_clock(sc, freq, ddr) != 0) 810 return 1; 811 812 clkcr |= SUNXI_MMC_CLKCR_CARDCLKON; 813 if (flags & SUNXI_MMC_CLKCR_MASK_DATA0) 814 clkcr |= SUNXI_MMC_CLKCR_MASK_DATA0; 815 MMC_WRITE(sc, SUNXI_MMC_CLKCR, clkcr); 816 if (sunxi_mmc_update_clock(sc) != 0) 817 return 1; 818 if (flags & SUNXI_MMC_CLKCR_MASK_DATA0) { 819 clkcr = MMC_READ(sc, SUNXI_MMC_CLKCR); 820 clkcr &= ~SUNXI_MMC_CLKCR_MASK_DATA0; 821 MMC_WRITE(sc, SUNXI_MMC_CLKCR, clkcr); 822 } 823 } 824 825 return 0; 826 } 827 828 static int 829 sunxi_mmc_bus_width(sdmmc_chipset_handle_t sch, int width) 830 { 831 struct sunxi_mmc_softc *sc = sch; 832 833 DPRINTF(sc->sc_dev, "width = %d\n", width); 834 835 switch (width) { 836 case 1: 837 MMC_WRITE(sc, SUNXI_MMC_WIDTH, SUNXI_MMC_WIDTH_1); 838 break; 839 case 4: 840 MMC_WRITE(sc, SUNXI_MMC_WIDTH, SUNXI_MMC_WIDTH_4); 841 break; 842 case 8: 843 MMC_WRITE(sc, SUNXI_MMC_WIDTH, SUNXI_MMC_WIDTH_8); 844 break; 845 default: 846 return 1; 847 } 848 849 sc->sc_mmc_width = width; 850 851 return 0; 852 } 853 854 static int 855 sunxi_mmc_bus_rod(sdmmc_chipset_handle_t sch, int on) 856 { 857 return -1; 858 } 859 860 static int 861 sunxi_mmc_signal_voltage(sdmmc_chipset_handle_t sch, int signal_voltage) 862 { 863 struct sunxi_mmc_softc *sc = sch; 864 u_int uvol; 865 int error; 866 867 if (sc->sc_reg_vqmmc == NULL) 868 return 0; 869 870 switch (signal_voltage) { 871 case SDMMC_SIGNAL_VOLTAGE_330: 872 uvol = 3300000; 873 break; 874 case SDMMC_SIGNAL_VOLTAGE_180: 875 uvol = 1800000; 876 break; 877 default: 878 return EINVAL; 879 } 880 881 error = fdtbus_regulator_set_voltage(sc->sc_reg_vqmmc, uvol, uvol); 882 if (error != 0) 883 return error; 884 885 return fdtbus_regulator_enable(sc->sc_reg_vqmmc); 886 } 887 888 static int 889 sunxi_mmc_dma_prepare(struct sunxi_mmc_softc *sc, struct sdmmc_command *cmd) 890 { 891 struct sunxi_mmc_idma_descriptor *dma = sc->sc_idma_desc; 892 bus_addr_t desc_paddr = sc->sc_idma_map->dm_segs[0].ds_addr; 893 bus_dmamap_t map; 894 bus_size_t off; 895 int desc, resid, seg; 896 uint32_t val; 897 898 /* 899 * If the command includes a dma map use it, otherwise we need to 900 * bounce. This can happen for SDIO IO_RW_EXTENDED (CMD53) commands. 901 */ 902 if (cmd->c_dmamap) { 903 map = cmd->c_dmamap; 904 } else { 905 if (cmd->c_datalen > sc->sc_dmabounce_buflen) 906 return E2BIG; 907 map = sc->sc_dmabounce_map; 908 909 if (ISSET(cmd->c_flags, SCF_CMD_READ)) { 910 memset(sc->sc_dmabounce_buf, 0, cmd->c_datalen); 911 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmabounce_map, 912 0, cmd->c_datalen, BUS_DMASYNC_PREREAD); 913 } else { 914 memcpy(sc->sc_dmabounce_buf, cmd->c_data, 915 cmd->c_datalen); 916 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmabounce_map, 917 0, cmd->c_datalen, BUS_DMASYNC_PREWRITE); 918 } 919 } 920 921 desc = 0; 922 for (seg = 0; seg < map->dm_nsegs; seg++) { 923 bus_addr_t paddr = map->dm_segs[seg].ds_addr; 924 bus_size_t len = map->dm_segs[seg].ds_len; 925 resid = min(len, cmd->c_resid); 926 off = 0; 927 while (resid > 0) { 928 if (desc == sc->sc_idma_ndesc) 929 break; 930 len = min(sc->sc_config->idma_xferlen, resid); 931 dma[desc].dma_buf_size = htole32(len); 932 dma[desc].dma_buf_addr = htole32(paddr + off); 933 dma[desc].dma_config = htole32(SUNXI_MMC_IDMA_CONFIG_CH | 934 SUNXI_MMC_IDMA_CONFIG_OWN); 935 cmd->c_resid -= len; 936 resid -= len; 937 off += len; 938 if (desc == 0) { 939 dma[desc].dma_config |= htole32(SUNXI_MMC_IDMA_CONFIG_FD); 940 } 941 if (cmd->c_resid == 0) { 942 dma[desc].dma_config |= htole32(SUNXI_MMC_IDMA_CONFIG_LD); 943 dma[desc].dma_config |= htole32(SUNXI_MMC_IDMA_CONFIG_ER); 944 dma[desc].dma_next = 0; 945 } else { 946 dma[desc].dma_config |= 947 htole32(SUNXI_MMC_IDMA_CONFIG_DIC); 948 dma[desc].dma_next = htole32( 949 desc_paddr + ((desc+1) * 950 sizeof(struct sunxi_mmc_idma_descriptor))); 951 } 952 ++desc; 953 } 954 } 955 if (desc == sc->sc_idma_ndesc) { 956 aprint_error_dev(sc->sc_dev, 957 "not enough descriptors for %d byte transfer!\n", 958 cmd->c_datalen); 959 return EIO; 960 } 961 962 bus_dmamap_sync(sc->sc_dmat, sc->sc_idma_map, 0, 963 sc->sc_idma_size, BUS_DMASYNC_PREWRITE); 964 965 sc->sc_idma_idst = 0; 966 967 val = MMC_READ(sc, SUNXI_MMC_GCTRL); 968 val |= SUNXI_MMC_GCTRL_DMAEN; 969 val |= SUNXI_MMC_GCTRL_INTEN; 970 MMC_WRITE(sc, SUNXI_MMC_GCTRL, val); 971 val |= SUNXI_MMC_GCTRL_DMARESET; 972 MMC_WRITE(sc, SUNXI_MMC_GCTRL, val); 973 MMC_WRITE(sc, SUNXI_MMC_DMAC, SUNXI_MMC_DMAC_SOFTRESET); 974 MMC_WRITE(sc, SUNXI_MMC_DMAC, 975 SUNXI_MMC_DMAC_IDMA_ON|SUNXI_MMC_DMAC_FIX_BURST); 976 val = MMC_READ(sc, SUNXI_MMC_IDIE); 977 val &= ~(SUNXI_MMC_IDST_RECEIVE_INT|SUNXI_MMC_IDST_TRANSMIT_INT); 978 if (ISSET(cmd->c_flags, SCF_CMD_READ)) 979 val |= SUNXI_MMC_IDST_RECEIVE_INT; 980 else 981 val |= SUNXI_MMC_IDST_TRANSMIT_INT; 982 MMC_WRITE(sc, SUNXI_MMC_IDIE, val); 983 MMC_WRITE(sc, SUNXI_MMC_DLBA, desc_paddr); 984 MMC_WRITE(sc, SUNXI_MMC_FTRGLEVEL, sc->sc_config->dma_ftrglevel); 985 986 return 0; 987 } 988 989 static void 990 sunxi_mmc_dma_complete(struct sunxi_mmc_softc *sc, struct sdmmc_command *cmd) 991 { 992 bus_dmamap_sync(sc->sc_dmat, sc->sc_idma_map, 0, 993 sc->sc_idma_size, BUS_DMASYNC_POSTWRITE); 994 995 if (cmd->c_dmamap == NULL) { 996 if (ISSET(cmd->c_flags, SCF_CMD_READ)) { 997 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmabounce_map, 998 0, cmd->c_datalen, BUS_DMASYNC_POSTREAD); 999 memcpy(cmd->c_data, sc->sc_dmabounce_buf, 1000 cmd->c_datalen); 1001 } else { 1002 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmabounce_map, 1003 0, cmd->c_datalen, BUS_DMASYNC_POSTWRITE); 1004 } 1005 } 1006 } 1007 1008 static void 1009 sunxi_mmc_exec_command(sdmmc_chipset_handle_t sch, struct sdmmc_command *cmd) 1010 { 1011 struct sunxi_mmc_softc *sc = sch; 1012 uint32_t cmdval = SUNXI_MMC_CMD_START; 1013 const bool poll = (cmd->c_flags & SCF_POLL) != 0; 1014 int retry; 1015 1016 DPRINTF(sc->sc_dev, 1017 "opcode %d flags 0x%x data %p datalen %d blklen %d poll %d\n", 1018 cmd->c_opcode, cmd->c_flags, cmd->c_data, cmd->c_datalen, 1019 cmd->c_blklen, poll); 1020 1021 mutex_enter(&sc->sc_intr_lock); 1022 1023 if (cmd->c_opcode == 0) 1024 cmdval |= SUNXI_MMC_CMD_SEND_INIT_SEQ; 1025 if (cmd->c_flags & SCF_RSP_PRESENT) 1026 cmdval |= SUNXI_MMC_CMD_RSP_EXP; 1027 if (cmd->c_flags & SCF_RSP_136) 1028 cmdval |= SUNXI_MMC_CMD_LONG_RSP; 1029 if (cmd->c_flags & SCF_RSP_CRC) 1030 cmdval |= SUNXI_MMC_CMD_CHECK_RSP_CRC; 1031 1032 if (cmd->c_datalen > 0) { 1033 unsigned int nblks; 1034 1035 cmdval |= SUNXI_MMC_CMD_DATA_EXP | SUNXI_MMC_CMD_WAIT_PRE_OVER; 1036 if (!ISSET(cmd->c_flags, SCF_CMD_READ)) { 1037 cmdval |= SUNXI_MMC_CMD_WRITE; 1038 } 1039 1040 nblks = cmd->c_datalen / cmd->c_blklen; 1041 if (nblks == 0 || (cmd->c_datalen % cmd->c_blklen) != 0) 1042 ++nblks; 1043 1044 if (nblks > 1) { 1045 cmdval |= SUNXI_MMC_CMD_SEND_AUTO_STOP; 1046 } 1047 1048 MMC_WRITE(sc, SUNXI_MMC_BLKSZ, cmd->c_blklen); 1049 MMC_WRITE(sc, SUNXI_MMC_BYTECNT, nblks * cmd->c_blklen); 1050 } 1051 1052 sc->sc_intr_rint = 0; 1053 1054 MMC_WRITE(sc, SUNXI_MMC_A12A, 1055 (cmdval & SUNXI_MMC_CMD_SEND_AUTO_STOP) ? 0 : 0xffff); 1056 1057 MMC_WRITE(sc, SUNXI_MMC_ARG, cmd->c_arg); 1058 1059 DPRINTF(sc->sc_dev, "cmdval = %08x\n", cmdval); 1060 1061 if (cmd->c_datalen == 0) { 1062 MMC_WRITE(sc, SUNXI_MMC_CMD, cmdval | cmd->c_opcode); 1063 } else { 1064 cmd->c_resid = cmd->c_datalen; 1065 cmd->c_error = sunxi_mmc_dma_prepare(sc, cmd); 1066 MMC_WRITE(sc, SUNXI_MMC_CMD, cmdval | cmd->c_opcode); 1067 if (cmd->c_error == 0) { 1068 const uint32_t idst_mask = 1069 SUNXI_MMC_IDST_ERROR | SUNXI_MMC_IDST_COMPLETE; 1070 retry = 10; 1071 while ((sc->sc_idma_idst & idst_mask) == 0) { 1072 if (retry-- == 0) { 1073 cmd->c_error = ETIMEDOUT; 1074 break; 1075 } 1076 cv_timedwait(&sc->sc_idst_cv, 1077 &sc->sc_intr_lock, hz); 1078 } 1079 } 1080 sunxi_mmc_dma_complete(sc, cmd); 1081 if (sc->sc_idma_idst & SUNXI_MMC_IDST_ERROR) { 1082 cmd->c_error = EIO; 1083 } else if (!(sc->sc_idma_idst & SUNXI_MMC_IDST_COMPLETE)) { 1084 cmd->c_error = ETIMEDOUT; 1085 } 1086 if (cmd->c_error) { 1087 DPRINTF(sc->sc_dev, 1088 "xfer failed, error %d\n", cmd->c_error); 1089 goto done; 1090 } 1091 } 1092 1093 cmd->c_error = sunxi_mmc_wait_rint(sc, 1094 SUNXI_MMC_INT_ERROR|SUNXI_MMC_INT_CMD_DONE, hz * 10, poll); 1095 if (cmd->c_error == 0 && (sc->sc_intr_rint & SUNXI_MMC_INT_ERROR)) { 1096 if (sc->sc_intr_rint & SUNXI_MMC_INT_RESP_TIMEOUT) { 1097 cmd->c_error = ETIMEDOUT; 1098 } else { 1099 cmd->c_error = EIO; 1100 } 1101 } 1102 if (cmd->c_error) { 1103 DPRINTF(sc->sc_dev, 1104 "cmd failed, error %d\n", cmd->c_error); 1105 goto done; 1106 } 1107 1108 if (cmd->c_datalen > 0) { 1109 cmd->c_error = sunxi_mmc_wait_rint(sc, 1110 SUNXI_MMC_INT_ERROR| 1111 SUNXI_MMC_INT_AUTO_CMD_DONE| 1112 SUNXI_MMC_INT_DATA_OVER, 1113 hz*10, poll); 1114 if (cmd->c_error == 0 && 1115 (sc->sc_intr_rint & SUNXI_MMC_INT_ERROR)) { 1116 cmd->c_error = ETIMEDOUT; 1117 } 1118 if (cmd->c_error) { 1119 DPRINTF(sc->sc_dev, 1120 "data timeout, rint = %08x\n", 1121 sc->sc_intr_rint); 1122 cmd->c_error = ETIMEDOUT; 1123 goto done; 1124 } 1125 } 1126 1127 if (cmd->c_flags & SCF_RSP_PRESENT) { 1128 if (cmd->c_flags & SCF_RSP_136) { 1129 cmd->c_resp[0] = MMC_READ(sc, SUNXI_MMC_RESP0); 1130 cmd->c_resp[1] = MMC_READ(sc, SUNXI_MMC_RESP1); 1131 cmd->c_resp[2] = MMC_READ(sc, SUNXI_MMC_RESP2); 1132 cmd->c_resp[3] = MMC_READ(sc, SUNXI_MMC_RESP3); 1133 if (cmd->c_flags & SCF_RSP_CRC) { 1134 cmd->c_resp[0] = (cmd->c_resp[0] >> 8) | 1135 (cmd->c_resp[1] << 24); 1136 cmd->c_resp[1] = (cmd->c_resp[1] >> 8) | 1137 (cmd->c_resp[2] << 24); 1138 cmd->c_resp[2] = (cmd->c_resp[2] >> 8) | 1139 (cmd->c_resp[3] << 24); 1140 cmd->c_resp[3] = (cmd->c_resp[3] >> 8); 1141 } 1142 } else { 1143 cmd->c_resp[0] = MMC_READ(sc, SUNXI_MMC_RESP0); 1144 } 1145 } 1146 1147 done: 1148 cmd->c_flags |= SCF_ITSDONE; 1149 mutex_exit(&sc->sc_intr_lock); 1150 1151 if (cmd->c_error) { 1152 DPRINTF(sc->sc_dev, "i/o error %d\n", cmd->c_error); 1153 MMC_WRITE(sc, SUNXI_MMC_GCTRL, 1154 MMC_READ(sc, SUNXI_MMC_GCTRL) | 1155 SUNXI_MMC_GCTRL_DMARESET | SUNXI_MMC_GCTRL_FIFORESET); 1156 for (retry = 0; retry < 1000; retry++) { 1157 if (!(MMC_READ(sc, SUNXI_MMC_GCTRL) & SUNXI_MMC_GCTRL_RESET)) 1158 break; 1159 delay(10); 1160 } 1161 sunxi_mmc_update_clock(sc); 1162 } 1163 1164 MMC_WRITE(sc, SUNXI_MMC_GCTRL, 1165 MMC_READ(sc, SUNXI_MMC_GCTRL) | SUNXI_MMC_GCTRL_FIFORESET); 1166 } 1167 1168 static void 1169 sunxi_mmc_card_enable_intr(sdmmc_chipset_handle_t sch, int enable) 1170 { 1171 struct sunxi_mmc_softc *sc = sch; 1172 uint32_t imask; 1173 1174 imask = MMC_READ(sc, SUNXI_MMC_IMASK); 1175 if (enable) 1176 imask |= SUNXI_MMC_INT_SDIO_INT; 1177 else 1178 imask &= ~SUNXI_MMC_INT_SDIO_INT; 1179 MMC_WRITE(sc, SUNXI_MMC_IMASK, imask); 1180 } 1181 1182 static void 1183 sunxi_mmc_card_intr_ack(sdmmc_chipset_handle_t sch) 1184 { 1185 struct sunxi_mmc_softc *sc = sch; 1186 1187 MMC_WRITE(sc, SUNXI_MMC_RINT, SUNXI_MMC_INT_SDIO_INT); 1188 } 1189
Indexes created Tue Sep 30 17:09:57 GMT 2025