1 /* 2 * SD Association Host Standard Specification v2.0 controller emulation 3 * 4 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 5 * Mitsyanko Igor <i.mitsyanko@samsung.com> 6 * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com> 7 * 8 * Based on MMC controller for Samsung S5PC1xx-based board emulation 9 * by Alexey Merkulov and Vladimir Monakhov. 10 * 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License as published by the 13 * Free Software Foundation; either version 2 of the License, or (at your 14 * option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 19 * See the GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License along 22 * with this program; if not, see <http://www.gnu.org/licenses/>. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "qemu/units.h" 27 #include "qemu/error-report.h" 28 #include "qapi/error.h" 29 #include "hw/irq.h" 30 #include "hw/qdev-properties.h" 31 #include "sysemu/dma.h" 32 #include "qemu/timer.h" 33 #include "qemu/bitops.h" 34 #include "hw/sd/sdhci.h" 35 #include "migration/vmstate.h" 36 #include "sdhci-internal.h" 37 #include "qemu/log.h" 38 #include "qemu/module.h" 39 #include "trace.h" 40 41 #define TYPE_SDHCI_BUS "sdhci-bus" 42 #define SDHCI_BUS(obj) OBJECT_CHECK(SDBus, (obj), TYPE_SDHCI_BUS) 43 44 #define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val)) 45 46 static inline unsigned int sdhci_get_fifolen(SDHCIState *s) 47 { 48 return 1 << (9 + FIELD_EX32(s->capareg, SDHC_CAPAB, MAXBLOCKLENGTH)); 49 } 50 51 /* return true on error */ 52 static bool sdhci_check_capab_freq_range(SDHCIState *s, const char *desc, 53 uint8_t freq, Error **errp) 54 { 55 if (s->sd_spec_version >= 3) { 56 return false; 57 } 58 switch (freq) { 59 case 0: 60 case 10 ... 63: 61 break; 62 default: 63 error_setg(errp, "SD %s clock frequency can have value" 64 "in range 0-63 only", desc); 65 return true; 66 } 67 return false; 68 } 69 70 static void sdhci_check_capareg(SDHCIState *s, Error **errp) 71 { 72 uint64_t msk = s->capareg; 73 uint32_t val; 74 bool y; 75 76 switch (s->sd_spec_version) { 77 case 4: 78 val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS64BIT_V4); 79 trace_sdhci_capareg("64-bit system bus (v4)", val); 80 msk = FIELD_DP64(msk, SDHC_CAPAB, BUS64BIT_V4, 0); 81 82 val = FIELD_EX64(s->capareg, SDHC_CAPAB, UHS_II); 83 trace_sdhci_capareg("UHS-II", val); 84 msk = FIELD_DP64(msk, SDHC_CAPAB, UHS_II, 0); 85 86 val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA3); 87 trace_sdhci_capareg("ADMA3", val); 88 msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA3, 0); 89 90 /* fallthrough */ 91 case 3: 92 val = FIELD_EX64(s->capareg, SDHC_CAPAB, ASYNC_INT); 93 trace_sdhci_capareg("async interrupt", val); 94 msk = FIELD_DP64(msk, SDHC_CAPAB, ASYNC_INT, 0); 95 96 val = FIELD_EX64(s->capareg, SDHC_CAPAB, SLOT_TYPE); 97 if (val) { 98 error_setg(errp, "slot-type not supported"); 99 return; 100 } 101 trace_sdhci_capareg("slot type", val); 102 msk = FIELD_DP64(msk, SDHC_CAPAB, SLOT_TYPE, 0); 103 104 if (val != 2) { 105 val = FIELD_EX64(s->capareg, SDHC_CAPAB, EMBEDDED_8BIT); 106 trace_sdhci_capareg("8-bit bus", val); 107 } 108 msk = FIELD_DP64(msk, SDHC_CAPAB, EMBEDDED_8BIT, 0); 109 110 val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS_SPEED); 111 trace_sdhci_capareg("bus speed mask", val); 112 msk = FIELD_DP64(msk, SDHC_CAPAB, BUS_SPEED, 0); 113 114 val = FIELD_EX64(s->capareg, SDHC_CAPAB, DRIVER_STRENGTH); 115 trace_sdhci_capareg("driver strength mask", val); 116 msk = FIELD_DP64(msk, SDHC_CAPAB, DRIVER_STRENGTH, 0); 117 118 val = FIELD_EX64(s->capareg, SDHC_CAPAB, TIMER_RETUNING); 119 trace_sdhci_capareg("timer re-tuning", val); 120 msk = FIELD_DP64(msk, SDHC_CAPAB, TIMER_RETUNING, 0); 121 122 val = FIELD_EX64(s->capareg, SDHC_CAPAB, SDR50_TUNING); 123 trace_sdhci_capareg("use SDR50 tuning", val); 124 msk = FIELD_DP64(msk, SDHC_CAPAB, SDR50_TUNING, 0); 125 126 val = FIELD_EX64(s->capareg, SDHC_CAPAB, RETUNING_MODE); 127 trace_sdhci_capareg("re-tuning mode", val); 128 msk = FIELD_DP64(msk, SDHC_CAPAB, RETUNING_MODE, 0); 129 130 val = FIELD_EX64(s->capareg, SDHC_CAPAB, CLOCK_MULT); 131 trace_sdhci_capareg("clock multiplier", val); 132 msk = FIELD_DP64(msk, SDHC_CAPAB, CLOCK_MULT, 0); 133 134 /* fallthrough */ 135 case 2: /* default version */ 136 val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA2); 137 trace_sdhci_capareg("ADMA2", val); 138 msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA2, 0); 139 140 val = FIELD_EX64(s->capareg, SDHC_CAPAB, ADMA1); 141 trace_sdhci_capareg("ADMA1", val); 142 msk = FIELD_DP64(msk, SDHC_CAPAB, ADMA1, 0); 143 144 val = FIELD_EX64(s->capareg, SDHC_CAPAB, BUS64BIT); 145 trace_sdhci_capareg("64-bit system bus (v3)", val); 146 msk = FIELD_DP64(msk, SDHC_CAPAB, BUS64BIT, 0); 147 148 /* fallthrough */ 149 case 1: 150 y = FIELD_EX64(s->capareg, SDHC_CAPAB, TOUNIT); 151 msk = FIELD_DP64(msk, SDHC_CAPAB, TOUNIT, 0); 152 153 val = FIELD_EX64(s->capareg, SDHC_CAPAB, TOCLKFREQ); 154 trace_sdhci_capareg(y ? "timeout (MHz)" : "Timeout (KHz)", val); 155 if (sdhci_check_capab_freq_range(s, "timeout", val, errp)) { 156 return; 157 } 158 msk = FIELD_DP64(msk, SDHC_CAPAB, TOCLKFREQ, 0); 159 160 val = FIELD_EX64(s->capareg, SDHC_CAPAB, BASECLKFREQ); 161 trace_sdhci_capareg(y ? "base (MHz)" : "Base (KHz)", val); 162 if (sdhci_check_capab_freq_range(s, "base", val, errp)) { 163 return; 164 } 165 msk = FIELD_DP64(msk, SDHC_CAPAB, BASECLKFREQ, 0); 166 167 val = FIELD_EX64(s->capareg, SDHC_CAPAB, MAXBLOCKLENGTH); 168 if (val >= 3) { 169 error_setg(errp, "block size can be 512, 1024 or 2048 only"); 170 return; 171 } 172 trace_sdhci_capareg("max block length", sdhci_get_fifolen(s)); 173 msk = FIELD_DP64(msk, SDHC_CAPAB, MAXBLOCKLENGTH, 0); 174 175 val = FIELD_EX64(s->capareg, SDHC_CAPAB, HIGHSPEED); 176 trace_sdhci_capareg("high speed", val); 177 msk = FIELD_DP64(msk, SDHC_CAPAB, HIGHSPEED, 0); 178 179 val = FIELD_EX64(s->capareg, SDHC_CAPAB, SDMA); 180 trace_sdhci_capareg("SDMA", val); 181 msk = FIELD_DP64(msk, SDHC_CAPAB, SDMA, 0); 182 183 val = FIELD_EX64(s->capareg, SDHC_CAPAB, SUSPRESUME); 184 trace_sdhci_capareg("suspend/resume", val); 185 msk = FIELD_DP64(msk, SDHC_CAPAB, SUSPRESUME, 0); 186 187 val = FIELD_EX64(s->capareg, SDHC_CAPAB, V33); 188 trace_sdhci_capareg("3.3v", val); 189 msk = FIELD_DP64(msk, SDHC_CAPAB, V33, 0); 190 191 val = FIELD_EX64(s->capareg, SDHC_CAPAB, V30); 192 trace_sdhci_capareg("3.0v", val); 193 msk = FIELD_DP64(msk, SDHC_CAPAB, V30, 0); 194 195 val = FIELD_EX64(s->capareg, SDHC_CAPAB, V18); 196 trace_sdhci_capareg("1.8v", val); 197 msk = FIELD_DP64(msk, SDHC_CAPAB, V18, 0); 198 break; 199 200 default: 201 error_setg(errp, "Unsupported spec version: %u", s->sd_spec_version); 202 } 203 if (msk) { 204 qemu_log_mask(LOG_UNIMP, 205 "SDHCI: unknown CAPAB mask: 0x%016" PRIx64 "\n", msk); 206 } 207 } 208 209 static uint8_t sdhci_slotint(SDHCIState *s) 210 { 211 return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) || 212 ((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) || 213 ((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV)); 214 } 215 216 static inline void sdhci_update_irq(SDHCIState *s) 217 { 218 qemu_set_irq(s->irq, sdhci_slotint(s)); 219 } 220 221 static void sdhci_raise_insertion_irq(void *opaque) 222 { 223 SDHCIState *s = (SDHCIState *)opaque; 224 225 if (s->norintsts & SDHC_NIS_REMOVE) { 226 timer_mod(s->insert_timer, 227 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); 228 } else { 229 s->prnsts = 0x1ff0000; 230 if (s->norintstsen & SDHC_NISEN_INSERT) { 231 s->norintsts |= SDHC_NIS_INSERT; 232 } 233 sdhci_update_irq(s); 234 } 235 } 236 237 static void sdhci_set_inserted(DeviceState *dev, bool level) 238 { 239 SDHCIState *s = (SDHCIState *)dev; 240 241 trace_sdhci_set_inserted(level ? "insert" : "eject"); 242 if ((s->norintsts & SDHC_NIS_REMOVE) && level) { 243 /* Give target some time to notice card ejection */ 244 timer_mod(s->insert_timer, 245 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); 246 } else { 247 if (level) { 248 s->prnsts = 0x1ff0000; 249 if (s->norintstsen & SDHC_NISEN_INSERT) { 250 s->norintsts |= SDHC_NIS_INSERT; 251 } 252 } else { 253 s->prnsts = 0x1fa0000; 254 s->pwrcon &= ~SDHC_POWER_ON; 255 s->clkcon &= ~SDHC_CLOCK_SDCLK_EN; 256 if (s->norintstsen & SDHC_NISEN_REMOVE) { 257 s->norintsts |= SDHC_NIS_REMOVE; 258 } 259 } 260 sdhci_update_irq(s); 261 } 262 } 263 264 static void sdhci_set_readonly(DeviceState *dev, bool level) 265 { 266 SDHCIState *s = (SDHCIState *)dev; 267 268 if (level) { 269 s->prnsts &= ~SDHC_WRITE_PROTECT; 270 } else { 271 /* Write enabled */ 272 s->prnsts |= SDHC_WRITE_PROTECT; 273 } 274 } 275 276 static void sdhci_reset(SDHCIState *s) 277 { 278 DeviceState *dev = DEVICE(s); 279 280 timer_del(s->insert_timer); 281 timer_del(s->transfer_timer); 282 283 /* Set all registers to 0. Capabilities/Version registers are not cleared 284 * and assumed to always preserve their value, given to them during 285 * initialization */ 286 memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad); 287 288 /* Reset other state based on current card insertion/readonly status */ 289 sdhci_set_inserted(dev, sdbus_get_inserted(&s->sdbus)); 290 sdhci_set_readonly(dev, sdbus_get_readonly(&s->sdbus)); 291 292 s->data_count = 0; 293 s->stopped_state = sdhc_not_stopped; 294 s->pending_insert_state = false; 295 } 296 297 static void sdhci_poweron_reset(DeviceState *dev) 298 { 299 /* QOM (ie power-on) reset. This is identical to reset 300 * commanded via device register apart from handling of the 301 * 'pending insert on powerup' quirk. 302 */ 303 SDHCIState *s = (SDHCIState *)dev; 304 305 sdhci_reset(s); 306 307 if (s->pending_insert_quirk) { 308 s->pending_insert_state = true; 309 } 310 } 311 312 static void sdhci_data_transfer(void *opaque); 313 314 static void sdhci_send_command(SDHCIState *s) 315 { 316 SDRequest request; 317 uint8_t response[16]; 318 int rlen; 319 320 s->errintsts = 0; 321 s->acmd12errsts = 0; 322 request.cmd = s->cmdreg >> 8; 323 request.arg = s->argument; 324 325 trace_sdhci_send_command(request.cmd, request.arg); 326 rlen = sdbus_do_command(&s->sdbus, &request, response); 327 328 if (s->cmdreg & SDHC_CMD_RESPONSE) { 329 if (rlen == 4) { 330 s->rspreg[0] = ldl_be_p(response); 331 s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0; 332 trace_sdhci_response4(s->rspreg[0]); 333 } else if (rlen == 16) { 334 s->rspreg[0] = ldl_be_p(&response[11]); 335 s->rspreg[1] = ldl_be_p(&response[7]); 336 s->rspreg[2] = ldl_be_p(&response[3]); 337 s->rspreg[3] = (response[0] << 16) | (response[1] << 8) | 338 response[2]; 339 trace_sdhci_response16(s->rspreg[3], s->rspreg[2], 340 s->rspreg[1], s->rspreg[0]); 341 } else { 342 trace_sdhci_error("timeout waiting for command response"); 343 if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) { 344 s->errintsts |= SDHC_EIS_CMDTIMEOUT; 345 s->norintsts |= SDHC_NIS_ERR; 346 } 347 } 348 349 if (!(s->quirks & SDHCI_QUIRK_NO_BUSY_IRQ) && 350 (s->norintstsen & SDHC_NISEN_TRSCMP) && 351 (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { 352 s->norintsts |= SDHC_NIS_TRSCMP; 353 } 354 } 355 356 if (s->norintstsen & SDHC_NISEN_CMDCMP) { 357 s->norintsts |= SDHC_NIS_CMDCMP; 358 } 359 360 sdhci_update_irq(s); 361 362 if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) { 363 s->data_count = 0; 364 sdhci_data_transfer(s); 365 } 366 } 367 368 static void sdhci_end_transfer(SDHCIState *s) 369 { 370 /* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */ 371 if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) { 372 SDRequest request; 373 uint8_t response[16]; 374 375 request.cmd = 0x0C; 376 request.arg = 0; 377 trace_sdhci_end_transfer(request.cmd, request.arg); 378 sdbus_do_command(&s->sdbus, &request, response); 379 /* Auto CMD12 response goes to the upper Response register */ 380 s->rspreg[3] = ldl_be_p(response); 381 } 382 383 s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE | 384 SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT | 385 SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE); 386 387 if (s->norintstsen & SDHC_NISEN_TRSCMP) { 388 s->norintsts |= SDHC_NIS_TRSCMP; 389 } 390 391 sdhci_update_irq(s); 392 } 393 394 /* 395 * Programmed i/o data transfer 396 */ 397 #define BLOCK_SIZE_MASK (4 * KiB - 1) 398 399 /* Fill host controller's read buffer with BLKSIZE bytes of data from card */ 400 static void sdhci_read_block_from_card(SDHCIState *s) 401 { 402 int index = 0; 403 uint8_t data; 404 const uint16_t blk_size = s->blksize & BLOCK_SIZE_MASK; 405 406 if ((s->trnmod & SDHC_TRNS_MULTI) && 407 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) { 408 return; 409 } 410 411 for (index = 0; index < blk_size; index++) { 412 data = sdbus_read_data(&s->sdbus); 413 if (!FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, EXECUTE_TUNING)) { 414 /* Device is not in tuning */ 415 s->fifo_buffer[index] = data; 416 } 417 } 418 419 if (FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, EXECUTE_TUNING)) { 420 /* Device is in tuning */ 421 s->hostctl2 &= ~R_SDHC_HOSTCTL2_EXECUTE_TUNING_MASK; 422 s->hostctl2 |= R_SDHC_HOSTCTL2_SAMPLING_CLKSEL_MASK; 423 s->prnsts &= ~(SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ | 424 SDHC_DATA_INHIBIT); 425 goto read_done; 426 } 427 428 /* New data now available for READ through Buffer Port Register */ 429 s->prnsts |= SDHC_DATA_AVAILABLE; 430 if (s->norintstsen & SDHC_NISEN_RBUFRDY) { 431 s->norintsts |= SDHC_NIS_RBUFRDY; 432 } 433 434 /* Clear DAT line active status if that was the last block */ 435 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 436 ((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) { 437 s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; 438 } 439 440 /* If stop at block gap request was set and it's not the last block of 441 * data - generate Block Event interrupt */ 442 if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) && 443 s->blkcnt != 1) { 444 s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; 445 if (s->norintstsen & SDHC_EISEN_BLKGAP) { 446 s->norintsts |= SDHC_EIS_BLKGAP; 447 } 448 } 449 450 read_done: 451 sdhci_update_irq(s); 452 } 453 454 /* Read @size byte of data from host controller @s BUFFER DATA PORT register */ 455 static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size) 456 { 457 uint32_t value = 0; 458 int i; 459 460 /* first check that a valid data exists in host controller input buffer */ 461 if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) { 462 trace_sdhci_error("read from empty buffer"); 463 return 0; 464 } 465 466 for (i = 0; i < size; i++) { 467 value |= s->fifo_buffer[s->data_count] << i * 8; 468 s->data_count++; 469 /* check if we've read all valid data (blksize bytes) from buffer */ 470 if ((s->data_count) >= (s->blksize & BLOCK_SIZE_MASK)) { 471 trace_sdhci_read_dataport(s->data_count); 472 s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */ 473 s->data_count = 0; /* next buff read must start at position [0] */ 474 475 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 476 s->blkcnt--; 477 } 478 479 /* if that was the last block of data */ 480 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 481 ((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) || 482 /* stop at gap request */ 483 (s->stopped_state == sdhc_gap_read && 484 !(s->prnsts & SDHC_DAT_LINE_ACTIVE))) { 485 sdhci_end_transfer(s); 486 } else { /* if there are more data, read next block from card */ 487 sdhci_read_block_from_card(s); 488 } 489 break; 490 } 491 } 492 493 return value; 494 } 495 496 /* Write data from host controller FIFO to card */ 497 static void sdhci_write_block_to_card(SDHCIState *s) 498 { 499 int index = 0; 500 501 if (s->prnsts & SDHC_SPACE_AVAILABLE) { 502 if (s->norintstsen & SDHC_NISEN_WBUFRDY) { 503 s->norintsts |= SDHC_NIS_WBUFRDY; 504 } 505 sdhci_update_irq(s); 506 return; 507 } 508 509 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 510 if (s->blkcnt == 0) { 511 return; 512 } else { 513 s->blkcnt--; 514 } 515 } 516 517 for (index = 0; index < (s->blksize & BLOCK_SIZE_MASK); index++) { 518 sdbus_write_data(&s->sdbus, s->fifo_buffer[index]); 519 } 520 521 /* Next data can be written through BUFFER DATORT register */ 522 s->prnsts |= SDHC_SPACE_AVAILABLE; 523 524 /* Finish transfer if that was the last block of data */ 525 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 526 ((s->trnmod & SDHC_TRNS_MULTI) && 527 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) { 528 sdhci_end_transfer(s); 529 } else if (s->norintstsen & SDHC_NISEN_WBUFRDY) { 530 s->norintsts |= SDHC_NIS_WBUFRDY; 531 } 532 533 /* Generate Block Gap Event if requested and if not the last block */ 534 if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) && 535 s->blkcnt > 0) { 536 s->prnsts &= ~SDHC_DOING_WRITE; 537 if (s->norintstsen & SDHC_EISEN_BLKGAP) { 538 s->norintsts |= SDHC_EIS_BLKGAP; 539 } 540 sdhci_end_transfer(s); 541 } 542 543 sdhci_update_irq(s); 544 } 545 546 /* Write @size bytes of @value data to host controller @s Buffer Data Port 547 * register */ 548 static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size) 549 { 550 unsigned i; 551 552 /* Check that there is free space left in a buffer */ 553 if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) { 554 trace_sdhci_error("Can't write to data buffer: buffer full"); 555 return; 556 } 557 558 for (i = 0; i < size; i++) { 559 s->fifo_buffer[s->data_count] = value & 0xFF; 560 s->data_count++; 561 value >>= 8; 562 if (s->data_count >= (s->blksize & BLOCK_SIZE_MASK)) { 563 trace_sdhci_write_dataport(s->data_count); 564 s->data_count = 0; 565 s->prnsts &= ~SDHC_SPACE_AVAILABLE; 566 if (s->prnsts & SDHC_DOING_WRITE) { 567 sdhci_write_block_to_card(s); 568 } 569 } 570 } 571 } 572 573 /* 574 * Single DMA data transfer 575 */ 576 577 /* Multi block SDMA transfer */ 578 static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s) 579 { 580 bool page_aligned = false; 581 unsigned int n, begin; 582 const uint16_t block_size = s->blksize & BLOCK_SIZE_MASK; 583 uint32_t boundary_chk = 1 << (((s->blksize & ~BLOCK_SIZE_MASK) >> 12) + 12); 584 uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk); 585 586 if (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || !s->blkcnt) { 587 qemu_log_mask(LOG_UNIMP, "infinite transfer is not supported\n"); 588 return; 589 } 590 591 /* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for 592 * possible stop at page boundary if initial address is not page aligned, 593 * allow them to work properly */ 594 if ((s->sdmasysad % boundary_chk) == 0) { 595 page_aligned = true; 596 } 597 598 if (s->trnmod & SDHC_TRNS_READ) { 599 s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | 600 SDHC_DAT_LINE_ACTIVE; 601 while (s->blkcnt) { 602 if (s->data_count == 0) { 603 for (n = 0; n < block_size; n++) { 604 s->fifo_buffer[n] = sdbus_read_data(&s->sdbus); 605 } 606 } 607 begin = s->data_count; 608 if (((boundary_count + begin) < block_size) && page_aligned) { 609 s->data_count = boundary_count + begin; 610 boundary_count = 0; 611 } else { 612 s->data_count = block_size; 613 boundary_count -= block_size - begin; 614 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 615 s->blkcnt--; 616 } 617 } 618 dma_memory_write(s->dma_as, s->sdmasysad, 619 &s->fifo_buffer[begin], s->data_count - begin); 620 s->sdmasysad += s->data_count - begin; 621 if (s->data_count == block_size) { 622 s->data_count = 0; 623 } 624 if (page_aligned && boundary_count == 0) { 625 break; 626 } 627 } 628 } else { 629 s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT | 630 SDHC_DAT_LINE_ACTIVE; 631 while (s->blkcnt) { 632 begin = s->data_count; 633 if (((boundary_count + begin) < block_size) && page_aligned) { 634 s->data_count = boundary_count + begin; 635 boundary_count = 0; 636 } else { 637 s->data_count = block_size; 638 boundary_count -= block_size - begin; 639 } 640 dma_memory_read(s->dma_as, s->sdmasysad, 641 &s->fifo_buffer[begin], s->data_count - begin); 642 s->sdmasysad += s->data_count - begin; 643 if (s->data_count == block_size) { 644 for (n = 0; n < block_size; n++) { 645 sdbus_write_data(&s->sdbus, s->fifo_buffer[n]); 646 } 647 s->data_count = 0; 648 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 649 s->blkcnt--; 650 } 651 } 652 if (page_aligned && boundary_count == 0) { 653 break; 654 } 655 } 656 } 657 658 if (s->blkcnt == 0) { 659 sdhci_end_transfer(s); 660 } else { 661 if (s->norintstsen & SDHC_NISEN_DMA) { 662 s->norintsts |= SDHC_NIS_DMA; 663 } 664 sdhci_update_irq(s); 665 } 666 } 667 668 /* single block SDMA transfer */ 669 static void sdhci_sdma_transfer_single_block(SDHCIState *s) 670 { 671 int n; 672 uint32_t datacnt = s->blksize & BLOCK_SIZE_MASK; 673 674 if (s->trnmod & SDHC_TRNS_READ) { 675 for (n = 0; n < datacnt; n++) { 676 s->fifo_buffer[n] = sdbus_read_data(&s->sdbus); 677 } 678 dma_memory_write(s->dma_as, s->sdmasysad, s->fifo_buffer, datacnt); 679 } else { 680 dma_memory_read(s->dma_as, s->sdmasysad, s->fifo_buffer, datacnt); 681 for (n = 0; n < datacnt; n++) { 682 sdbus_write_data(&s->sdbus, s->fifo_buffer[n]); 683 } 684 } 685 s->blkcnt--; 686 687 sdhci_end_transfer(s); 688 } 689 690 typedef struct ADMADescr { 691 hwaddr addr; 692 uint16_t length; 693 uint8_t attr; 694 uint8_t incr; 695 } ADMADescr; 696 697 static void get_adma_description(SDHCIState *s, ADMADescr *dscr) 698 { 699 uint32_t adma1 = 0; 700 uint64_t adma2 = 0; 701 hwaddr entry_addr = (hwaddr)s->admasysaddr; 702 switch (SDHC_DMA_TYPE(s->hostctl1)) { 703 case SDHC_CTRL_ADMA2_32: 704 dma_memory_read(s->dma_as, entry_addr, &adma2, sizeof(adma2)); 705 adma2 = le64_to_cpu(adma2); 706 /* The spec does not specify endianness of descriptor table. 707 * We currently assume that it is LE. 708 */ 709 dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull; 710 dscr->length = (uint16_t)extract64(adma2, 16, 16); 711 dscr->attr = (uint8_t)extract64(adma2, 0, 7); 712 dscr->incr = 8; 713 break; 714 case SDHC_CTRL_ADMA1_32: 715 dma_memory_read(s->dma_as, entry_addr, &adma1, sizeof(adma1)); 716 adma1 = le32_to_cpu(adma1); 717 dscr->addr = (hwaddr)(adma1 & 0xFFFFF000); 718 dscr->attr = (uint8_t)extract32(adma1, 0, 7); 719 dscr->incr = 4; 720 if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) { 721 dscr->length = (uint16_t)extract32(adma1, 12, 16); 722 } else { 723 dscr->length = 4 * KiB; 724 } 725 break; 726 case SDHC_CTRL_ADMA2_64: 727 dma_memory_read(s->dma_as, entry_addr, &dscr->attr, 1); 728 dma_memory_read(s->dma_as, entry_addr + 2, &dscr->length, 2); 729 dscr->length = le16_to_cpu(dscr->length); 730 dma_memory_read(s->dma_as, entry_addr + 4, &dscr->addr, 8); 731 dscr->addr = le64_to_cpu(dscr->addr); 732 dscr->attr &= (uint8_t) ~0xC0; 733 dscr->incr = 12; 734 break; 735 } 736 } 737 738 /* Advanced DMA data transfer */ 739 740 static void sdhci_do_adma(SDHCIState *s) 741 { 742 unsigned int n, begin, length; 743 const uint16_t block_size = s->blksize & BLOCK_SIZE_MASK; 744 ADMADescr dscr = {}; 745 int i; 746 747 for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) { 748 s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH; 749 750 get_adma_description(s, &dscr); 751 trace_sdhci_adma_loop(dscr.addr, dscr.length, dscr.attr); 752 753 if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) { 754 /* Indicate that error occurred in ST_FDS state */ 755 s->admaerr &= ~SDHC_ADMAERR_STATE_MASK; 756 s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS; 757 758 /* Generate ADMA error interrupt */ 759 if (s->errintstsen & SDHC_EISEN_ADMAERR) { 760 s->errintsts |= SDHC_EIS_ADMAERR; 761 s->norintsts |= SDHC_NIS_ERR; 762 } 763 764 sdhci_update_irq(s); 765 return; 766 } 767 768 length = dscr.length ? dscr.length : 64 * KiB; 769 770 switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) { 771 case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */ 772 773 if (s->trnmod & SDHC_TRNS_READ) { 774 while (length) { 775 if (s->data_count == 0) { 776 for (n = 0; n < block_size; n++) { 777 s->fifo_buffer[n] = sdbus_read_data(&s->sdbus); 778 } 779 } 780 begin = s->data_count; 781 if ((length + begin) < block_size) { 782 s->data_count = length + begin; 783 length = 0; 784 } else { 785 s->data_count = block_size; 786 length -= block_size - begin; 787 } 788 dma_memory_write(s->dma_as, dscr.addr, 789 &s->fifo_buffer[begin], 790 s->data_count - begin); 791 dscr.addr += s->data_count - begin; 792 if (s->data_count == block_size) { 793 s->data_count = 0; 794 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 795 s->blkcnt--; 796 if (s->blkcnt == 0) { 797 break; 798 } 799 } 800 } 801 } 802 } else { 803 while (length) { 804 begin = s->data_count; 805 if ((length + begin) < block_size) { 806 s->data_count = length + begin; 807 length = 0; 808 } else { 809 s->data_count = block_size; 810 length -= block_size - begin; 811 } 812 dma_memory_read(s->dma_as, dscr.addr, 813 &s->fifo_buffer[begin], 814 s->data_count - begin); 815 dscr.addr += s->data_count - begin; 816 if (s->data_count == block_size) { 817 for (n = 0; n < block_size; n++) { 818 sdbus_write_data(&s->sdbus, s->fifo_buffer[n]); 819 } 820 s->data_count = 0; 821 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 822 s->blkcnt--; 823 if (s->blkcnt == 0) { 824 break; 825 } 826 } 827 } 828 } 829 } 830 s->admasysaddr += dscr.incr; 831 break; 832 case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */ 833 s->admasysaddr = dscr.addr; 834 trace_sdhci_adma("link", s->admasysaddr); 835 break; 836 default: 837 s->admasysaddr += dscr.incr; 838 break; 839 } 840 841 if (dscr.attr & SDHC_ADMA_ATTR_INT) { 842 trace_sdhci_adma("interrupt", s->admasysaddr); 843 if (s->norintstsen & SDHC_NISEN_DMA) { 844 s->norintsts |= SDHC_NIS_DMA; 845 } 846 847 sdhci_update_irq(s); 848 } 849 850 /* ADMA transfer terminates if blkcnt == 0 or by END attribute */ 851 if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && 852 (s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) { 853 trace_sdhci_adma_transfer_completed(); 854 if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) && 855 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && 856 s->blkcnt != 0)) { 857 trace_sdhci_error("SD/MMC host ADMA length mismatch"); 858 s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH | 859 SDHC_ADMAERR_STATE_ST_TFR; 860 if (s->errintstsen & SDHC_EISEN_ADMAERR) { 861 trace_sdhci_error("Set ADMA error flag"); 862 s->errintsts |= SDHC_EIS_ADMAERR; 863 s->norintsts |= SDHC_NIS_ERR; 864 } 865 866 sdhci_update_irq(s); 867 } 868 sdhci_end_transfer(s); 869 return; 870 } 871 872 } 873 874 /* we have unfinished business - reschedule to continue ADMA */ 875 timer_mod(s->transfer_timer, 876 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_TRANSFER_DELAY); 877 } 878 879 /* Perform data transfer according to controller configuration */ 880 881 static void sdhci_data_transfer(void *opaque) 882 { 883 SDHCIState *s = (SDHCIState *)opaque; 884 885 if (s->trnmod & SDHC_TRNS_DMA) { 886 switch (SDHC_DMA_TYPE(s->hostctl1)) { 887 case SDHC_CTRL_SDMA: 888 if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) { 889 sdhci_sdma_transfer_single_block(s); 890 } else { 891 sdhci_sdma_transfer_multi_blocks(s); 892 } 893 894 break; 895 case SDHC_CTRL_ADMA1_32: 896 if (!(s->capareg & R_SDHC_CAPAB_ADMA1_MASK)) { 897 trace_sdhci_error("ADMA1 not supported"); 898 break; 899 } 900 901 sdhci_do_adma(s); 902 break; 903 case SDHC_CTRL_ADMA2_32: 904 if (!(s->capareg & R_SDHC_CAPAB_ADMA2_MASK)) { 905 trace_sdhci_error("ADMA2 not supported"); 906 break; 907 } 908 909 sdhci_do_adma(s); 910 break; 911 case SDHC_CTRL_ADMA2_64: 912 if (!(s->capareg & R_SDHC_CAPAB_ADMA2_MASK) || 913 !(s->capareg & R_SDHC_CAPAB_BUS64BIT_MASK)) { 914 trace_sdhci_error("64 bit ADMA not supported"); 915 break; 916 } 917 918 sdhci_do_adma(s); 919 break; 920 default: 921 trace_sdhci_error("Unsupported DMA type"); 922 break; 923 } 924 } else { 925 if ((s->trnmod & SDHC_TRNS_READ) && sdbus_data_ready(&s->sdbus)) { 926 s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | 927 SDHC_DAT_LINE_ACTIVE; 928 sdhci_read_block_from_card(s); 929 } else { 930 s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE | 931 SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT; 932 sdhci_write_block_to_card(s); 933 } 934 } 935 } 936 937 static bool sdhci_can_issue_command(SDHCIState *s) 938 { 939 if (!SDHC_CLOCK_IS_ON(s->clkcon) || 940 (((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) && 941 ((s->cmdreg & SDHC_CMD_DATA_PRESENT) || 942 ((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY && 943 !(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) { 944 return false; 945 } 946 947 return true; 948 } 949 950 /* The Buffer Data Port register must be accessed in sequential and 951 * continuous manner */ 952 static inline bool 953 sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num) 954 { 955 if ((s->data_count & 0x3) != byte_num) { 956 trace_sdhci_error("Non-sequential access to Buffer Data Port register" 957 "is prohibited\n"); 958 return false; 959 } 960 return true; 961 } 962 963 static uint64_t sdhci_read(void *opaque, hwaddr offset, unsigned size) 964 { 965 SDHCIState *s = (SDHCIState *)opaque; 966 uint32_t ret = 0; 967 968 switch (offset & ~0x3) { 969 case SDHC_SYSAD: 970 ret = s->sdmasysad; 971 break; 972 case SDHC_BLKSIZE: 973 ret = s->blksize | (s->blkcnt << 16); 974 break; 975 case SDHC_ARGUMENT: 976 ret = s->argument; 977 break; 978 case SDHC_TRNMOD: 979 ret = s->trnmod | (s->cmdreg << 16); 980 break; 981 case SDHC_RSPREG0 ... SDHC_RSPREG3: 982 ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2]; 983 break; 984 case SDHC_BDATA: 985 if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { 986 ret = sdhci_read_dataport(s, size); 987 trace_sdhci_access("rd", size << 3, offset, "->", ret, ret); 988 return ret; 989 } 990 break; 991 case SDHC_PRNSTS: 992 ret = s->prnsts; 993 ret = FIELD_DP32(ret, SDHC_PRNSTS, DAT_LVL, 994 sdbus_get_dat_lines(&s->sdbus)); 995 ret = FIELD_DP32(ret, SDHC_PRNSTS, CMD_LVL, 996 sdbus_get_cmd_line(&s->sdbus)); 997 break; 998 case SDHC_HOSTCTL: 999 ret = s->hostctl1 | (s->pwrcon << 8) | (s->blkgap << 16) | 1000 (s->wakcon << 24); 1001 break; 1002 case SDHC_CLKCON: 1003 ret = s->clkcon | (s->timeoutcon << 16); 1004 break; 1005 case SDHC_NORINTSTS: 1006 ret = s->norintsts | (s->errintsts << 16); 1007 break; 1008 case SDHC_NORINTSTSEN: 1009 ret = s->norintstsen | (s->errintstsen << 16); 1010 break; 1011 case SDHC_NORINTSIGEN: 1012 ret = s->norintsigen | (s->errintsigen << 16); 1013 break; 1014 case SDHC_ACMD12ERRSTS: 1015 ret = s->acmd12errsts | (s->hostctl2 << 16); 1016 break; 1017 case SDHC_CAPAB: 1018 ret = (uint32_t)s->capareg; 1019 break; 1020 case SDHC_CAPAB + 4: 1021 ret = (uint32_t)(s->capareg >> 32); 1022 break; 1023 case SDHC_MAXCURR: 1024 ret = (uint32_t)s->maxcurr; 1025 break; 1026 case SDHC_MAXCURR + 4: 1027 ret = (uint32_t)(s->maxcurr >> 32); 1028 break; 1029 case SDHC_ADMAERR: 1030 ret = s->admaerr; 1031 break; 1032 case SDHC_ADMASYSADDR: 1033 ret = (uint32_t)s->admasysaddr; 1034 break; 1035 case SDHC_ADMASYSADDR + 4: 1036 ret = (uint32_t)(s->admasysaddr >> 32); 1037 break; 1038 case SDHC_SLOT_INT_STATUS: 1039 ret = (s->version << 16) | sdhci_slotint(s); 1040 break; 1041 default: 1042 qemu_log_mask(LOG_UNIMP, "SDHC rd_%ub @0x%02" HWADDR_PRIx " " 1043 "not implemented\n", size, offset); 1044 break; 1045 } 1046 1047 ret >>= (offset & 0x3) * 8; 1048 ret &= (1ULL << (size * 8)) - 1; 1049 trace_sdhci_access("rd", size << 3, offset, "->", ret, ret); 1050 return ret; 1051 } 1052 1053 static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value) 1054 { 1055 if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) { 1056 return; 1057 } 1058 s->blkgap = value & SDHC_STOP_AT_GAP_REQ; 1059 1060 if ((value & SDHC_CONTINUE_REQ) && s->stopped_state && 1061 (s->blkgap & SDHC_STOP_AT_GAP_REQ) == 0) { 1062 if (s->stopped_state == sdhc_gap_read) { 1063 s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ; 1064 sdhci_read_block_from_card(s); 1065 } else { 1066 s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE; 1067 sdhci_write_block_to_card(s); 1068 } 1069 s->stopped_state = sdhc_not_stopped; 1070 } else if (!s->stopped_state && (value & SDHC_STOP_AT_GAP_REQ)) { 1071 if (s->prnsts & SDHC_DOING_READ) { 1072 s->stopped_state = sdhc_gap_read; 1073 } else if (s->prnsts & SDHC_DOING_WRITE) { 1074 s->stopped_state = sdhc_gap_write; 1075 } 1076 } 1077 } 1078 1079 static inline void sdhci_reset_write(SDHCIState *s, uint8_t value) 1080 { 1081 switch (value) { 1082 case SDHC_RESET_ALL: 1083 sdhci_reset(s); 1084 break; 1085 case SDHC_RESET_CMD: 1086 s->prnsts &= ~SDHC_CMD_INHIBIT; 1087 s->norintsts &= ~SDHC_NIS_CMDCMP; 1088 break; 1089 case SDHC_RESET_DATA: 1090 s->data_count = 0; 1091 s->prnsts &= ~(SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE | 1092 SDHC_DOING_READ | SDHC_DOING_WRITE | 1093 SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE); 1094 s->blkgap &= ~(SDHC_STOP_AT_GAP_REQ | SDHC_CONTINUE_REQ); 1095 s->stopped_state = sdhc_not_stopped; 1096 s->norintsts &= ~(SDHC_NIS_WBUFRDY | SDHC_NIS_RBUFRDY | 1097 SDHC_NIS_DMA | SDHC_NIS_TRSCMP | SDHC_NIS_BLKGAP); 1098 break; 1099 } 1100 } 1101 1102 static void 1103 sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) 1104 { 1105 SDHCIState *s = (SDHCIState *)opaque; 1106 unsigned shift = 8 * (offset & 0x3); 1107 uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift); 1108 uint32_t value = val; 1109 value <<= shift; 1110 1111 switch (offset & ~0x3) { 1112 case SDHC_SYSAD: 1113 s->sdmasysad = (s->sdmasysad & mask) | value; 1114 MASKED_WRITE(s->sdmasysad, mask, value); 1115 /* Writing to last byte of sdmasysad might trigger transfer */ 1116 if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt && 1117 s->blksize && SDHC_DMA_TYPE(s->hostctl1) == SDHC_CTRL_SDMA) { 1118 if (s->trnmod & SDHC_TRNS_MULTI) { 1119 sdhci_sdma_transfer_multi_blocks(s); 1120 } else { 1121 sdhci_sdma_transfer_single_block(s); 1122 } 1123 } 1124 break; 1125 case SDHC_BLKSIZE: 1126 if (!TRANSFERRING_DATA(s->prnsts)) { 1127 MASKED_WRITE(s->blksize, mask, value); 1128 MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); 1129 } 1130 1131 /* Limit block size to the maximum buffer size */ 1132 if (extract32(s->blksize, 0, 12) > s->buf_maxsz) { 1133 qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than " 1134 "the maximum buffer 0x%x", __func__, s->blksize, 1135 s->buf_maxsz); 1136 1137 s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz); 1138 } 1139 1140 break; 1141 case SDHC_ARGUMENT: 1142 MASKED_WRITE(s->argument, mask, value); 1143 break; 1144 case SDHC_TRNMOD: 1145 /* DMA can be enabled only if it is supported as indicated by 1146 * capabilities register */ 1147 if (!(s->capareg & R_SDHC_CAPAB_SDMA_MASK)) { 1148 value &= ~SDHC_TRNS_DMA; 1149 } 1150 MASKED_WRITE(s->trnmod, mask, value & SDHC_TRNMOD_MASK); 1151 MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16); 1152 1153 /* Writing to the upper byte of CMDREG triggers SD command generation */ 1154 if ((mask & 0xFF000000) || !sdhci_can_issue_command(s)) { 1155 break; 1156 } 1157 1158 sdhci_send_command(s); 1159 break; 1160 case SDHC_BDATA: 1161 if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { 1162 sdhci_write_dataport(s, value >> shift, size); 1163 } 1164 break; 1165 case SDHC_HOSTCTL: 1166 if (!(mask & 0xFF0000)) { 1167 sdhci_blkgap_write(s, value >> 16); 1168 } 1169 MASKED_WRITE(s->hostctl1, mask, value); 1170 MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8); 1171 MASKED_WRITE(s->wakcon, mask >> 24, value >> 24); 1172 if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 || 1173 !(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) { 1174 s->pwrcon &= ~SDHC_POWER_ON; 1175 } 1176 break; 1177 case SDHC_CLKCON: 1178 if (!(mask & 0xFF000000)) { 1179 sdhci_reset_write(s, value >> 24); 1180 } 1181 MASKED_WRITE(s->clkcon, mask, value); 1182 MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16); 1183 if (s->clkcon & SDHC_CLOCK_INT_EN) { 1184 s->clkcon |= SDHC_CLOCK_INT_STABLE; 1185 } else { 1186 s->clkcon &= ~SDHC_CLOCK_INT_STABLE; 1187 } 1188 break; 1189 case SDHC_NORINTSTS: 1190 if (s->norintstsen & SDHC_NISEN_CARDINT) { 1191 value &= ~SDHC_NIS_CARDINT; 1192 } 1193 s->norintsts &= mask | ~value; 1194 s->errintsts &= (mask >> 16) | ~(value >> 16); 1195 if (s->errintsts) { 1196 s->norintsts |= SDHC_NIS_ERR; 1197 } else { 1198 s->norintsts &= ~SDHC_NIS_ERR; 1199 } 1200 sdhci_update_irq(s); 1201 break; 1202 case SDHC_NORINTSTSEN: 1203 MASKED_WRITE(s->norintstsen, mask, value); 1204 MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16); 1205 s->norintsts &= s->norintstsen; 1206 s->errintsts &= s->errintstsen; 1207 if (s->errintsts) { 1208 s->norintsts |= SDHC_NIS_ERR; 1209 } else { 1210 s->norintsts &= ~SDHC_NIS_ERR; 1211 } 1212 /* Quirk for Raspberry Pi: pending card insert interrupt 1213 * appears when first enabled after power on */ 1214 if ((s->norintstsen & SDHC_NISEN_INSERT) && s->pending_insert_state) { 1215 assert(s->pending_insert_quirk); 1216 s->norintsts |= SDHC_NIS_INSERT; 1217 s->pending_insert_state = false; 1218 } 1219 sdhci_update_irq(s); 1220 break; 1221 case SDHC_NORINTSIGEN: 1222 MASKED_WRITE(s->norintsigen, mask, value); 1223 MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16); 1224 sdhci_update_irq(s); 1225 break; 1226 case SDHC_ADMAERR: 1227 MASKED_WRITE(s->admaerr, mask, value); 1228 break; 1229 case SDHC_ADMASYSADDR: 1230 s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL | 1231 (uint64_t)mask)) | (uint64_t)value; 1232 break; 1233 case SDHC_ADMASYSADDR + 4: 1234 s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL | 1235 ((uint64_t)mask << 32))) | ((uint64_t)value << 32); 1236 break; 1237 case SDHC_FEAER: 1238 s->acmd12errsts |= value; 1239 s->errintsts |= (value >> 16) & s->errintstsen; 1240 if (s->acmd12errsts) { 1241 s->errintsts |= SDHC_EIS_CMD12ERR; 1242 } 1243 if (s->errintsts) { 1244 s->norintsts |= SDHC_NIS_ERR; 1245 } 1246 sdhci_update_irq(s); 1247 break; 1248 case SDHC_ACMD12ERRSTS: 1249 MASKED_WRITE(s->acmd12errsts, mask, value & UINT16_MAX); 1250 if (s->uhs_mode >= UHS_I) { 1251 MASKED_WRITE(s->hostctl2, mask >> 16, value >> 16); 1252 1253 if (FIELD_EX32(s->hostctl2, SDHC_HOSTCTL2, V18_ENA)) { 1254 sdbus_set_voltage(&s->sdbus, SD_VOLTAGE_1_8V); 1255 } else { 1256 sdbus_set_voltage(&s->sdbus, SD_VOLTAGE_3_3V); 1257 } 1258 } 1259 break; 1260 1261 case SDHC_CAPAB: 1262 case SDHC_CAPAB + 4: 1263 case SDHC_MAXCURR: 1264 case SDHC_MAXCURR + 4: 1265 qemu_log_mask(LOG_GUEST_ERROR, "SDHC wr_%ub @0x%02" HWADDR_PRIx 1266 " <- 0x%08x read-only\n", size, offset, value >> shift); 1267 break; 1268 1269 default: 1270 qemu_log_mask(LOG_UNIMP, "SDHC wr_%ub @0x%02" HWADDR_PRIx " <- 0x%08x " 1271 "not implemented\n", size, offset, value >> shift); 1272 break; 1273 } 1274 trace_sdhci_access("wr", size << 3, offset, "<-", 1275 value >> shift, value >> shift); 1276 } 1277 1278 static const MemoryRegionOps sdhci_mmio_ops = { 1279 .read = sdhci_read, 1280 .write = sdhci_write, 1281 .valid = { 1282 .min_access_size = 1, 1283 .max_access_size = 4, 1284 .unaligned = false 1285 }, 1286 .endianness = DEVICE_LITTLE_ENDIAN, 1287 }; 1288 1289 static void sdhci_init_readonly_registers(SDHCIState *s, Error **errp) 1290 { 1291 Error *local_err = NULL; 1292 1293 switch (s->sd_spec_version) { 1294 case 2 ... 3: 1295 break; 1296 default: 1297 error_setg(errp, "Only Spec v2/v3 are supported"); 1298 return; 1299 } 1300 s->version = (SDHC_HCVER_VENDOR << 8) | (s->sd_spec_version - 1); 1301 1302 sdhci_check_capareg(s, &local_err); 1303 if (local_err) { 1304 error_propagate(errp, local_err); 1305 return; 1306 } 1307 } 1308 1309 /* --- qdev common --- */ 1310 1311 void sdhci_initfn(SDHCIState *s) 1312 { 1313 qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), 1314 TYPE_SDHCI_BUS, DEVICE(s), "sd-bus"); 1315 1316 s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s); 1317 s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_data_transfer, s); 1318 1319 s->io_ops = &sdhci_mmio_ops; 1320 } 1321 1322 void sdhci_uninitfn(SDHCIState *s) 1323 { 1324 timer_del(s->insert_timer); 1325 timer_free(s->insert_timer); 1326 timer_del(s->transfer_timer); 1327 timer_free(s->transfer_timer); 1328 1329 g_free(s->fifo_buffer); 1330 s->fifo_buffer = NULL; 1331 } 1332 1333 void sdhci_common_realize(SDHCIState *s, Error **errp) 1334 { 1335 Error *local_err = NULL; 1336 1337 sdhci_init_readonly_registers(s, &local_err); 1338 if (local_err) { 1339 error_propagate(errp, local_err); 1340 return; 1341 } 1342 s->buf_maxsz = sdhci_get_fifolen(s); 1343 s->fifo_buffer = g_malloc0(s->buf_maxsz); 1344 1345 memory_region_init_io(&s->iomem, OBJECT(s), s->io_ops, s, "sdhci", 1346 SDHC_REGISTERS_MAP_SIZE); 1347 } 1348 1349 void sdhci_common_unrealize(SDHCIState *s, Error **errp) 1350 { 1351 /* This function is expected to be called only once for each class: 1352 * - SysBus: via DeviceClass->unrealize(), 1353 * - PCI: via PCIDeviceClass->exit(). 1354 * However to avoid double-free and/or use-after-free we still nullify 1355 * this variable (better safe than sorry!). */ 1356 g_free(s->fifo_buffer); 1357 s->fifo_buffer = NULL; 1358 } 1359 1360 static bool sdhci_pending_insert_vmstate_needed(void *opaque) 1361 { 1362 SDHCIState *s = opaque; 1363 1364 return s->pending_insert_state; 1365 } 1366 1367 static const VMStateDescription sdhci_pending_insert_vmstate = { 1368 .name = "sdhci/pending-insert", 1369 .version_id = 1, 1370 .minimum_version_id = 1, 1371 .needed = sdhci_pending_insert_vmstate_needed, 1372 .fields = (VMStateField[]) { 1373 VMSTATE_BOOL(pending_insert_state, SDHCIState), 1374 VMSTATE_END_OF_LIST() 1375 }, 1376 }; 1377 1378 const VMStateDescription sdhci_vmstate = { 1379 .name = "sdhci", 1380 .version_id = 1, 1381 .minimum_version_id = 1, 1382 .fields = (VMStateField[]) { 1383 VMSTATE_UINT32(sdmasysad, SDHCIState), 1384 VMSTATE_UINT16(blksize, SDHCIState), 1385 VMSTATE_UINT16(blkcnt, SDHCIState), 1386 VMSTATE_UINT32(argument, SDHCIState), 1387 VMSTATE_UINT16(trnmod, SDHCIState), 1388 VMSTATE_UINT16(cmdreg, SDHCIState), 1389 VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4), 1390 VMSTATE_UINT32(prnsts, SDHCIState), 1391 VMSTATE_UINT8(hostctl1, SDHCIState), 1392 VMSTATE_UINT8(pwrcon, SDHCIState), 1393 VMSTATE_UINT8(blkgap, SDHCIState), 1394 VMSTATE_UINT8(wakcon, SDHCIState), 1395 VMSTATE_UINT16(clkcon, SDHCIState), 1396 VMSTATE_UINT8(timeoutcon, SDHCIState), 1397 VMSTATE_UINT8(admaerr, SDHCIState), 1398 VMSTATE_UINT16(norintsts, SDHCIState), 1399 VMSTATE_UINT16(errintsts, SDHCIState), 1400 VMSTATE_UINT16(norintstsen, SDHCIState), 1401 VMSTATE_UINT16(errintstsen, SDHCIState), 1402 VMSTATE_UINT16(norintsigen, SDHCIState), 1403 VMSTATE_UINT16(errintsigen, SDHCIState), 1404 VMSTATE_UINT16(acmd12errsts, SDHCIState), 1405 VMSTATE_UINT16(data_count, SDHCIState), 1406 VMSTATE_UINT64(admasysaddr, SDHCIState), 1407 VMSTATE_UINT8(stopped_state, SDHCIState), 1408 VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, buf_maxsz), 1409 VMSTATE_TIMER_PTR(insert_timer, SDHCIState), 1410 VMSTATE_TIMER_PTR(transfer_timer, SDHCIState), 1411 VMSTATE_END_OF_LIST() 1412 }, 1413 .subsections = (const VMStateDescription*[]) { 1414 &sdhci_pending_insert_vmstate, 1415 NULL 1416 }, 1417 }; 1418 1419 void sdhci_common_class_init(ObjectClass *klass, void *data) 1420 { 1421 DeviceClass *dc = DEVICE_CLASS(klass); 1422 1423 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1424 dc->vmsd = &sdhci_vmstate; 1425 dc->reset = sdhci_poweron_reset; 1426 } 1427 1428 /* --- qdev SysBus --- */ 1429 1430 static Property sdhci_sysbus_properties[] = { 1431 DEFINE_SDHCI_COMMON_PROPERTIES(SDHCIState), 1432 DEFINE_PROP_BOOL("pending-insert-quirk", SDHCIState, pending_insert_quirk, 1433 false), 1434 DEFINE_PROP_LINK("dma", SDHCIState, 1435 dma_mr, TYPE_MEMORY_REGION, MemoryRegion *), 1436 DEFINE_PROP_END_OF_LIST(), 1437 }; 1438 1439 static void sdhci_sysbus_init(Object *obj) 1440 { 1441 SDHCIState *s = SYSBUS_SDHCI(obj); 1442 1443 sdhci_initfn(s); 1444 } 1445 1446 static void sdhci_sysbus_finalize(Object *obj) 1447 { 1448 SDHCIState *s = SYSBUS_SDHCI(obj); 1449 1450 if (s->dma_mr) { 1451 object_unparent(OBJECT(s->dma_mr)); 1452 } 1453 1454 sdhci_uninitfn(s); 1455 } 1456 1457 static void sdhci_sysbus_realize(DeviceState *dev, Error **errp) 1458 { 1459 SDHCIState *s = SYSBUS_SDHCI(dev); 1460 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1461 Error *local_err = NULL; 1462 1463 sdhci_common_realize(s, &local_err); 1464 if (local_err) { 1465 error_propagate(errp, local_err); 1466 return; 1467 } 1468 1469 if (s->dma_mr) { 1470 s->dma_as = &s->sysbus_dma_as; 1471 address_space_init(s->dma_as, s->dma_mr, "sdhci-dma"); 1472 } else { 1473 /* use system_memory() if property "dma" not set */ 1474 s->dma_as = &address_space_memory; 1475 } 1476 1477 sysbus_init_irq(sbd, &s->irq); 1478 1479 sysbus_init_mmio(sbd, &s->iomem); 1480 } 1481 1482 static void sdhci_sysbus_unrealize(DeviceState *dev, Error **errp) 1483 { 1484 SDHCIState *s = SYSBUS_SDHCI(dev); 1485 1486 sdhci_common_unrealize(s, &error_abort); 1487 1488 if (s->dma_mr) { 1489 address_space_destroy(s->dma_as); 1490 } 1491 } 1492 1493 static void sdhci_sysbus_class_init(ObjectClass *klass, void *data) 1494 { 1495 DeviceClass *dc = DEVICE_CLASS(klass); 1496 1497 device_class_set_props(dc, sdhci_sysbus_properties); 1498 dc->realize = sdhci_sysbus_realize; 1499 dc->unrealize = sdhci_sysbus_unrealize; 1500 1501 sdhci_common_class_init(klass, data); 1502 } 1503 1504 static const TypeInfo sdhci_sysbus_info = { 1505 .name = TYPE_SYSBUS_SDHCI, 1506 .parent = TYPE_SYS_BUS_DEVICE, 1507 .instance_size = sizeof(SDHCIState), 1508 .instance_init = sdhci_sysbus_init, 1509 .instance_finalize = sdhci_sysbus_finalize, 1510 .class_init = sdhci_sysbus_class_init, 1511 }; 1512 1513 /* --- qdev bus master --- */ 1514 1515 static void sdhci_bus_class_init(ObjectClass *klass, void *data) 1516 { 1517 SDBusClass *sbc = SD_BUS_CLASS(klass); 1518 1519 sbc->set_inserted = sdhci_set_inserted; 1520 sbc->set_readonly = sdhci_set_readonly; 1521 } 1522 1523 static const TypeInfo sdhci_bus_info = { 1524 .name = TYPE_SDHCI_BUS, 1525 .parent = TYPE_SD_BUS, 1526 .instance_size = sizeof(SDBus), 1527 .class_init = sdhci_bus_class_init, 1528 }; 1529 1530 /* --- qdev i.MX eSDHC --- */ 1531 1532 static uint64_t usdhc_read(void *opaque, hwaddr offset, unsigned size) 1533 { 1534 SDHCIState *s = SYSBUS_SDHCI(opaque); 1535 uint32_t ret; 1536 uint16_t hostctl1; 1537 1538 switch (offset) { 1539 default: 1540 return sdhci_read(opaque, offset, size); 1541 1542 case SDHC_HOSTCTL: 1543 /* 1544 * For a detailed explanation on the following bit 1545 * manipulation code see comments in a similar part of 1546 * usdhc_write() 1547 */ 1548 hostctl1 = SDHC_DMA_TYPE(s->hostctl1) << (8 - 3); 1549 1550 if (s->hostctl1 & SDHC_CTRL_8BITBUS) { 1551 hostctl1 |= ESDHC_CTRL_8BITBUS; 1552 } 1553 1554 if (s->hostctl1 & SDHC_CTRL_4BITBUS) { 1555 hostctl1 |= ESDHC_CTRL_4BITBUS; 1556 } 1557 1558 ret = hostctl1; 1559 ret |= (uint32_t)s->blkgap << 16; 1560 ret |= (uint32_t)s->wakcon << 24; 1561 1562 break; 1563 1564 case SDHC_PRNSTS: 1565 /* Add SDSTB (SD Clock Stable) bit to PRNSTS */ 1566 ret = sdhci_read(opaque, offset, size) & ~ESDHC_PRNSTS_SDSTB; 1567 if (s->clkcon & SDHC_CLOCK_INT_STABLE) { 1568 ret |= ESDHC_PRNSTS_SDSTB; 1569 } 1570 break; 1571 1572 case ESDHC_DLL_CTRL: 1573 case ESDHC_TUNE_CTRL_STATUS: 1574 case ESDHC_UNDOCUMENTED_REG27: 1575 case ESDHC_TUNING_CTRL: 1576 case ESDHC_VENDOR_SPEC: 1577 case ESDHC_MIX_CTRL: 1578 case ESDHC_WTMK_LVL: 1579 ret = 0; 1580 break; 1581 } 1582 1583 return ret; 1584 } 1585 1586 static void 1587 usdhc_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) 1588 { 1589 SDHCIState *s = SYSBUS_SDHCI(opaque); 1590 uint8_t hostctl1; 1591 uint32_t value = (uint32_t)val; 1592 1593 switch (offset) { 1594 case ESDHC_DLL_CTRL: 1595 case ESDHC_TUNE_CTRL_STATUS: 1596 case ESDHC_UNDOCUMENTED_REG27: 1597 case ESDHC_TUNING_CTRL: 1598 case ESDHC_WTMK_LVL: 1599 case ESDHC_VENDOR_SPEC: 1600 break; 1601 1602 case SDHC_HOSTCTL: 1603 /* 1604 * Here's What ESDHCI has at offset 0x28 (SDHC_HOSTCTL) 1605 * 1606 * 7 6 5 4 3 2 1 0 1607 * |-----------+--------+--------+-----------+----------+---------| 1608 * | Card | Card | Endian | DATA3 | Data | Led | 1609 * | Detect | Detect | Mode | as Card | Transfer | Control | 1610 * | Signal | Test | | Detection | Width | | 1611 * | Selection | Level | | Pin | | | 1612 * |-----------+--------+--------+-----------+----------+---------| 1613 * 1614 * and 0x29 1615 * 1616 * 15 10 9 8 1617 * |----------+------| 1618 * | Reserved | DMA | 1619 * | | Sel. | 1620 * | | | 1621 * |----------+------| 1622 * 1623 * and here's what SDCHI spec expects those offsets to be: 1624 * 1625 * 0x28 (Host Control Register) 1626 * 1627 * 7 6 5 4 3 2 1 0 1628 * |--------+--------+----------+------+--------+----------+---------| 1629 * | Card | Card | Extended | DMA | High | Data | LED | 1630 * | Detect | Detect | Data | Sel. | Speed | Transfer | Control | 1631 * | Signal | Test | Transfer | | Enable | Width | | 1632 * | Sel. | Level | Width | | | | | 1633 * |--------+--------+----------+------+--------+----------+---------| 1634 * 1635 * and 0x29 (Power Control Register) 1636 * 1637 * |----------------------------------| 1638 * | Power Control Register | 1639 * | | 1640 * | Description omitted, | 1641 * | since it has no analog in ESDHCI | 1642 * | | 1643 * |----------------------------------| 1644 * 1645 * Since offsets 0x2A and 0x2B should be compatible between 1646 * both IP specs we only need to reconcile least 16-bit of the 1647 * word we've been given. 1648 */ 1649 1650 /* 1651 * First, save bits 7 6 and 0 since they are identical 1652 */ 1653 hostctl1 = value & (SDHC_CTRL_LED | 1654 SDHC_CTRL_CDTEST_INS | 1655 SDHC_CTRL_CDTEST_EN); 1656 /* 1657 * Second, split "Data Transfer Width" from bits 2 and 1 in to 1658 * bits 5 and 1 1659 */ 1660 if (value & ESDHC_CTRL_8BITBUS) { 1661 hostctl1 |= SDHC_CTRL_8BITBUS; 1662 } 1663 1664 if (value & ESDHC_CTRL_4BITBUS) { 1665 hostctl1 |= ESDHC_CTRL_4BITBUS; 1666 } 1667 1668 /* 1669 * Third, move DMA select from bits 9 and 8 to bits 4 and 3 1670 */ 1671 hostctl1 |= SDHC_DMA_TYPE(value >> (8 - 3)); 1672 1673 /* 1674 * Now place the corrected value into low 16-bit of the value 1675 * we are going to give standard SDHCI write function 1676 * 1677 * NOTE: This transformation should be the inverse of what can 1678 * be found in drivers/mmc/host/sdhci-esdhc-imx.c in Linux 1679 * kernel 1680 */ 1681 value &= ~UINT16_MAX; 1682 value |= hostctl1; 1683 value |= (uint16_t)s->pwrcon << 8; 1684 1685 sdhci_write(opaque, offset, value, size); 1686 break; 1687 1688 case ESDHC_MIX_CTRL: 1689 /* 1690 * So, when SD/MMC stack in Linux tries to write to "Transfer 1691 * Mode Register", ESDHC i.MX quirk code will translate it 1692 * into a write to ESDHC_MIX_CTRL, so we do the opposite in 1693 * order to get where we started 1694 * 1695 * Note that Auto CMD23 Enable bit is located in a wrong place 1696 * on i.MX, but since it is not used by QEMU we do not care. 1697 * 1698 * We don't want to call sdhci_write(.., SDHC_TRNMOD, ...) 1699 * here becuase it will result in a call to 1700 * sdhci_send_command(s) which we don't want. 1701 * 1702 */ 1703 s->trnmod = value & UINT16_MAX; 1704 break; 1705 case SDHC_TRNMOD: 1706 /* 1707 * Similar to above, but this time a write to "Command 1708 * Register" will be translated into a 4-byte write to 1709 * "Transfer Mode register" where lower 16-bit of value would 1710 * be set to zero. So what we do is fill those bits with 1711 * cached value from s->trnmod and let the SDHCI 1712 * infrastructure handle the rest 1713 */ 1714 sdhci_write(opaque, offset, val | s->trnmod, size); 1715 break; 1716 case SDHC_BLKSIZE: 1717 /* 1718 * ESDHCI does not implement "Host SDMA Buffer Boundary", and 1719 * Linux driver will try to zero this field out which will 1720 * break the rest of SDHCI emulation. 1721 * 1722 * Linux defaults to maximum possible setting (512K boundary) 1723 * and it seems to be the only option that i.MX IP implements, 1724 * so we artificially set it to that value. 1725 */ 1726 val |= 0x7 << 12; 1727 /* FALLTHROUGH */ 1728 default: 1729 sdhci_write(opaque, offset, val, size); 1730 break; 1731 } 1732 } 1733 1734 static const MemoryRegionOps usdhc_mmio_ops = { 1735 .read = usdhc_read, 1736 .write = usdhc_write, 1737 .valid = { 1738 .min_access_size = 1, 1739 .max_access_size = 4, 1740 .unaligned = false 1741 }, 1742 .endianness = DEVICE_LITTLE_ENDIAN, 1743 }; 1744 1745 static void imx_usdhc_init(Object *obj) 1746 { 1747 SDHCIState *s = SYSBUS_SDHCI(obj); 1748 1749 s->io_ops = &usdhc_mmio_ops; 1750 s->quirks = SDHCI_QUIRK_NO_BUSY_IRQ; 1751 } 1752 1753 static const TypeInfo imx_usdhc_info = { 1754 .name = TYPE_IMX_USDHC, 1755 .parent = TYPE_SYSBUS_SDHCI, 1756 .instance_init = imx_usdhc_init, 1757 }; 1758 1759 /* --- qdev Samsung s3c --- */ 1760 1761 #define S3C_SDHCI_CONTROL2 0x80 1762 #define S3C_SDHCI_CONTROL3 0x84 1763 #define S3C_SDHCI_CONTROL4 0x8c 1764 1765 static uint64_t sdhci_s3c_read(void *opaque, hwaddr offset, unsigned size) 1766 { 1767 uint64_t ret; 1768 1769 switch (offset) { 1770 case S3C_SDHCI_CONTROL2: 1771 case S3C_SDHCI_CONTROL3: 1772 case S3C_SDHCI_CONTROL4: 1773 /* ignore */ 1774 ret = 0; 1775 break; 1776 default: 1777 ret = sdhci_read(opaque, offset, size); 1778 break; 1779 } 1780 1781 return ret; 1782 } 1783 1784 static void sdhci_s3c_write(void *opaque, hwaddr offset, uint64_t val, 1785 unsigned size) 1786 { 1787 switch (offset) { 1788 case S3C_SDHCI_CONTROL2: 1789 case S3C_SDHCI_CONTROL3: 1790 case S3C_SDHCI_CONTROL4: 1791 /* ignore */ 1792 break; 1793 default: 1794 sdhci_write(opaque, offset, val, size); 1795 break; 1796 } 1797 } 1798 1799 static const MemoryRegionOps sdhci_s3c_mmio_ops = { 1800 .read = sdhci_s3c_read, 1801 .write = sdhci_s3c_write, 1802 .valid = { 1803 .min_access_size = 1, 1804 .max_access_size = 4, 1805 .unaligned = false 1806 }, 1807 .endianness = DEVICE_LITTLE_ENDIAN, 1808 }; 1809 1810 static void sdhci_s3c_init(Object *obj) 1811 { 1812 SDHCIState *s = SYSBUS_SDHCI(obj); 1813 1814 s->io_ops = &sdhci_s3c_mmio_ops; 1815 } 1816 1817 static const TypeInfo sdhci_s3c_info = { 1818 .name = TYPE_S3C_SDHCI , 1819 .parent = TYPE_SYSBUS_SDHCI, 1820 .instance_init = sdhci_s3c_init, 1821 }; 1822 1823 static void sdhci_register_types(void) 1824 { 1825 type_register_static(&sdhci_sysbus_info); 1826 type_register_static(&sdhci_bus_info); 1827 type_register_static(&imx_usdhc_info); 1828 type_register_static(&sdhci_s3c_info); 1829 } 1830 1831 type_init(sdhci_register_types) 1832