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 <inttypes.h> 26 #include "hw/hw.h" 27 #include "sysemu/block-backend.h" 28 #include "sysemu/blockdev.h" 29 #include "sysemu/dma.h" 30 #include "qemu/timer.h" 31 #include "qemu/bitops.h" 32 #include "sdhci-internal.h" 33 34 /* host controller debug messages */ 35 #ifndef SDHC_DEBUG 36 #define SDHC_DEBUG 0 37 #endif 38 39 #define DPRINT_L1(fmt, args...) \ 40 do { \ 41 if (SDHC_DEBUG) { \ 42 fprintf(stderr, "QEMU SDHC: " fmt, ## args); \ 43 } \ 44 } while (0) 45 #define DPRINT_L2(fmt, args...) \ 46 do { \ 47 if (SDHC_DEBUG > 1) { \ 48 fprintf(stderr, "QEMU SDHC: " fmt, ## args); \ 49 } \ 50 } while (0) 51 #define ERRPRINT(fmt, args...) \ 52 do { \ 53 if (SDHC_DEBUG) { \ 54 fprintf(stderr, "QEMU SDHC ERROR: " fmt, ## args); \ 55 } \ 56 } while (0) 57 58 /* Default SD/MMC host controller features information, which will be 59 * presented in CAPABILITIES register of generic SD host controller at reset. 60 * If not stated otherwise: 61 * 0 - not supported, 1 - supported, other - prohibited. 62 */ 63 #define SDHC_CAPAB_64BITBUS 0ul /* 64-bit System Bus Support */ 64 #define SDHC_CAPAB_18V 1ul /* Voltage support 1.8v */ 65 #define SDHC_CAPAB_30V 0ul /* Voltage support 3.0v */ 66 #define SDHC_CAPAB_33V 1ul /* Voltage support 3.3v */ 67 #define SDHC_CAPAB_SUSPRESUME 0ul /* Suspend/resume support */ 68 #define SDHC_CAPAB_SDMA 1ul /* SDMA support */ 69 #define SDHC_CAPAB_HIGHSPEED 1ul /* High speed support */ 70 #define SDHC_CAPAB_ADMA1 1ul /* ADMA1 support */ 71 #define SDHC_CAPAB_ADMA2 1ul /* ADMA2 support */ 72 /* Maximum host controller R/W buffers size 73 * Possible values: 512, 1024, 2048 bytes */ 74 #define SDHC_CAPAB_MAXBLOCKLENGTH 512ul 75 /* Maximum clock frequency for SDclock in MHz 76 * value in range 10-63 MHz, 0 - not defined */ 77 #define SDHC_CAPAB_BASECLKFREQ 52ul 78 #define SDHC_CAPAB_TOUNIT 1ul /* Timeout clock unit 0 - kHz, 1 - MHz */ 79 /* Timeout clock frequency 1-63, 0 - not defined */ 80 #define SDHC_CAPAB_TOCLKFREQ 52ul 81 82 /* Now check all parameters and calculate CAPABILITIES REGISTER value */ 83 #if SDHC_CAPAB_64BITBUS > 1 || SDHC_CAPAB_18V > 1 || SDHC_CAPAB_30V > 1 || \ 84 SDHC_CAPAB_33V > 1 || SDHC_CAPAB_SUSPRESUME > 1 || SDHC_CAPAB_SDMA > 1 || \ 85 SDHC_CAPAB_HIGHSPEED > 1 || SDHC_CAPAB_ADMA2 > 1 || SDHC_CAPAB_ADMA1 > 1 ||\ 86 SDHC_CAPAB_TOUNIT > 1 87 #error Capabilities features can have value 0 or 1 only! 88 #endif 89 90 #if SDHC_CAPAB_MAXBLOCKLENGTH == 512 91 #define MAX_BLOCK_LENGTH 0ul 92 #elif SDHC_CAPAB_MAXBLOCKLENGTH == 1024 93 #define MAX_BLOCK_LENGTH 1ul 94 #elif SDHC_CAPAB_MAXBLOCKLENGTH == 2048 95 #define MAX_BLOCK_LENGTH 2ul 96 #else 97 #error Max host controller block size can have value 512, 1024 or 2048 only! 98 #endif 99 100 #if (SDHC_CAPAB_BASECLKFREQ > 0 && SDHC_CAPAB_BASECLKFREQ < 10) || \ 101 SDHC_CAPAB_BASECLKFREQ > 63 102 #error SDclock frequency can have value in range 0, 10-63 only! 103 #endif 104 105 #if SDHC_CAPAB_TOCLKFREQ > 63 106 #error Timeout clock frequency can have value in range 0-63 only! 107 #endif 108 109 #define SDHC_CAPAB_REG_DEFAULT \ 110 ((SDHC_CAPAB_64BITBUS << 28) | (SDHC_CAPAB_18V << 26) | \ 111 (SDHC_CAPAB_30V << 25) | (SDHC_CAPAB_33V << 24) | \ 112 (SDHC_CAPAB_SUSPRESUME << 23) | (SDHC_CAPAB_SDMA << 22) | \ 113 (SDHC_CAPAB_HIGHSPEED << 21) | (SDHC_CAPAB_ADMA1 << 20) | \ 114 (SDHC_CAPAB_ADMA2 << 19) | (MAX_BLOCK_LENGTH << 16) | \ 115 (SDHC_CAPAB_BASECLKFREQ << 8) | (SDHC_CAPAB_TOUNIT << 7) | \ 116 (SDHC_CAPAB_TOCLKFREQ)) 117 118 #define MASKED_WRITE(reg, mask, val) (reg = (reg & (mask)) | (val)) 119 120 static uint8_t sdhci_slotint(SDHCIState *s) 121 { 122 return (s->norintsts & s->norintsigen) || (s->errintsts & s->errintsigen) || 123 ((s->norintsts & SDHC_NIS_INSERT) && (s->wakcon & SDHC_WKUP_ON_INS)) || 124 ((s->norintsts & SDHC_NIS_REMOVE) && (s->wakcon & SDHC_WKUP_ON_RMV)); 125 } 126 127 static inline void sdhci_update_irq(SDHCIState *s) 128 { 129 qemu_set_irq(s->irq, sdhci_slotint(s)); 130 } 131 132 static void sdhci_raise_insertion_irq(void *opaque) 133 { 134 SDHCIState *s = (SDHCIState *)opaque; 135 136 if (s->norintsts & SDHC_NIS_REMOVE) { 137 timer_mod(s->insert_timer, 138 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); 139 } else { 140 s->prnsts = 0x1ff0000; 141 if (s->norintstsen & SDHC_NISEN_INSERT) { 142 s->norintsts |= SDHC_NIS_INSERT; 143 } 144 sdhci_update_irq(s); 145 } 146 } 147 148 static void sdhci_insert_eject_cb(void *opaque, int irq, int level) 149 { 150 SDHCIState *s = (SDHCIState *)opaque; 151 DPRINT_L1("Card state changed: %s!\n", level ? "insert" : "eject"); 152 153 if ((s->norintsts & SDHC_NIS_REMOVE) && level) { 154 /* Give target some time to notice card ejection */ 155 timer_mod(s->insert_timer, 156 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_INSERTION_DELAY); 157 } else { 158 if (level) { 159 s->prnsts = 0x1ff0000; 160 if (s->norintstsen & SDHC_NISEN_INSERT) { 161 s->norintsts |= SDHC_NIS_INSERT; 162 } 163 } else { 164 s->prnsts = 0x1fa0000; 165 s->pwrcon &= ~SDHC_POWER_ON; 166 s->clkcon &= ~SDHC_CLOCK_SDCLK_EN; 167 if (s->norintstsen & SDHC_NISEN_REMOVE) { 168 s->norintsts |= SDHC_NIS_REMOVE; 169 } 170 } 171 sdhci_update_irq(s); 172 } 173 } 174 175 static void sdhci_card_readonly_cb(void *opaque, int irq, int level) 176 { 177 SDHCIState *s = (SDHCIState *)opaque; 178 179 if (level) { 180 s->prnsts &= ~SDHC_WRITE_PROTECT; 181 } else { 182 /* Write enabled */ 183 s->prnsts |= SDHC_WRITE_PROTECT; 184 } 185 } 186 187 static void sdhci_reset(SDHCIState *s) 188 { 189 timer_del(s->insert_timer); 190 timer_del(s->transfer_timer); 191 /* Set all registers to 0. Capabilities registers are not cleared 192 * and assumed to always preserve their value, given to them during 193 * initialization */ 194 memset(&s->sdmasysad, 0, (uintptr_t)&s->capareg - (uintptr_t)&s->sdmasysad); 195 196 sd_set_cb(s->card, s->ro_cb, s->eject_cb); 197 s->data_count = 0; 198 s->stopped_state = sdhc_not_stopped; 199 } 200 201 static void sdhci_data_transfer(void *opaque); 202 203 static void sdhci_send_command(SDHCIState *s) 204 { 205 SDRequest request; 206 uint8_t response[16]; 207 int rlen; 208 209 s->errintsts = 0; 210 s->acmd12errsts = 0; 211 request.cmd = s->cmdreg >> 8; 212 request.arg = s->argument; 213 DPRINT_L1("sending CMD%u ARG[0x%08x]\n", request.cmd, request.arg); 214 rlen = sd_do_command(s->card, &request, response); 215 216 if (s->cmdreg & SDHC_CMD_RESPONSE) { 217 if (rlen == 4) { 218 s->rspreg[0] = (response[0] << 24) | (response[1] << 16) | 219 (response[2] << 8) | response[3]; 220 s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0; 221 DPRINT_L1("Response: RSPREG[31..0]=0x%08x\n", s->rspreg[0]); 222 } else if (rlen == 16) { 223 s->rspreg[0] = (response[11] << 24) | (response[12] << 16) | 224 (response[13] << 8) | response[14]; 225 s->rspreg[1] = (response[7] << 24) | (response[8] << 16) | 226 (response[9] << 8) | response[10]; 227 s->rspreg[2] = (response[3] << 24) | (response[4] << 16) | 228 (response[5] << 8) | response[6]; 229 s->rspreg[3] = (response[0] << 16) | (response[1] << 8) | 230 response[2]; 231 DPRINT_L1("Response received:\n RSPREG[127..96]=0x%08x, RSPREG[95.." 232 "64]=0x%08x,\n RSPREG[63..32]=0x%08x, RSPREG[31..0]=0x%08x\n", 233 s->rspreg[3], s->rspreg[2], s->rspreg[1], s->rspreg[0]); 234 } else { 235 ERRPRINT("Timeout waiting for command response\n"); 236 if (s->errintstsen & SDHC_EISEN_CMDTIMEOUT) { 237 s->errintsts |= SDHC_EIS_CMDTIMEOUT; 238 s->norintsts |= SDHC_NIS_ERR; 239 } 240 } 241 242 if ((s->norintstsen & SDHC_NISEN_TRSCMP) && 243 (s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY) { 244 s->norintsts |= SDHC_NIS_TRSCMP; 245 } 246 } else if (rlen != 0 && (s->errintstsen & SDHC_EISEN_CMDIDX)) { 247 s->errintsts |= SDHC_EIS_CMDIDX; 248 s->norintsts |= SDHC_NIS_ERR; 249 } 250 251 if (s->norintstsen & SDHC_NISEN_CMDCMP) { 252 s->norintsts |= SDHC_NIS_CMDCMP; 253 } 254 255 sdhci_update_irq(s); 256 257 if (s->blksize && (s->cmdreg & SDHC_CMD_DATA_PRESENT)) { 258 s->data_count = 0; 259 sdhci_data_transfer(s); 260 } 261 } 262 263 static void sdhci_end_transfer(SDHCIState *s) 264 { 265 /* Automatically send CMD12 to stop transfer if AutoCMD12 enabled */ 266 if ((s->trnmod & SDHC_TRNS_ACMD12) != 0) { 267 SDRequest request; 268 uint8_t response[16]; 269 270 request.cmd = 0x0C; 271 request.arg = 0; 272 DPRINT_L1("Automatically issue CMD%d %08x\n", request.cmd, request.arg); 273 sd_do_command(s->card, &request, response); 274 /* Auto CMD12 response goes to the upper Response register */ 275 s->rspreg[3] = (response[0] << 24) | (response[1] << 16) | 276 (response[2] << 8) | response[3]; 277 } 278 279 s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE | 280 SDHC_DAT_LINE_ACTIVE | SDHC_DATA_INHIBIT | 281 SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE); 282 283 if (s->norintstsen & SDHC_NISEN_TRSCMP) { 284 s->norintsts |= SDHC_NIS_TRSCMP; 285 } 286 287 sdhci_update_irq(s); 288 } 289 290 /* 291 * Programmed i/o data transfer 292 */ 293 294 /* Fill host controller's read buffer with BLKSIZE bytes of data from card */ 295 static void sdhci_read_block_from_card(SDHCIState *s) 296 { 297 int index = 0; 298 299 if ((s->trnmod & SDHC_TRNS_MULTI) && 300 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) { 301 return; 302 } 303 304 for (index = 0; index < (s->blksize & 0x0fff); index++) { 305 s->fifo_buffer[index] = sd_read_data(s->card); 306 } 307 308 /* New data now available for READ through Buffer Port Register */ 309 s->prnsts |= SDHC_DATA_AVAILABLE; 310 if (s->norintstsen & SDHC_NISEN_RBUFRDY) { 311 s->norintsts |= SDHC_NIS_RBUFRDY; 312 } 313 314 /* Clear DAT line active status if that was the last block */ 315 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 316 ((s->trnmod & SDHC_TRNS_MULTI) && s->blkcnt == 1)) { 317 s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; 318 } 319 320 /* If stop at block gap request was set and it's not the last block of 321 * data - generate Block Event interrupt */ 322 if (s->stopped_state == sdhc_gap_read && (s->trnmod & SDHC_TRNS_MULTI) && 323 s->blkcnt != 1) { 324 s->prnsts &= ~SDHC_DAT_LINE_ACTIVE; 325 if (s->norintstsen & SDHC_EISEN_BLKGAP) { 326 s->norintsts |= SDHC_EIS_BLKGAP; 327 } 328 } 329 330 sdhci_update_irq(s); 331 } 332 333 /* Read @size byte of data from host controller @s BUFFER DATA PORT register */ 334 static uint32_t sdhci_read_dataport(SDHCIState *s, unsigned size) 335 { 336 uint32_t value = 0; 337 int i; 338 339 /* first check that a valid data exists in host controller input buffer */ 340 if ((s->prnsts & SDHC_DATA_AVAILABLE) == 0) { 341 ERRPRINT("Trying to read from empty buffer\n"); 342 return 0; 343 } 344 345 for (i = 0; i < size; i++) { 346 value |= s->fifo_buffer[s->data_count] << i * 8; 347 s->data_count++; 348 /* check if we've read all valid data (blksize bytes) from buffer */ 349 if ((s->data_count) >= (s->blksize & 0x0fff)) { 350 DPRINT_L2("All %u bytes of data have been read from input buffer\n", 351 s->data_count); 352 s->prnsts &= ~SDHC_DATA_AVAILABLE; /* no more data in a buffer */ 353 s->data_count = 0; /* next buff read must start at position [0] */ 354 355 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 356 s->blkcnt--; 357 } 358 359 /* if that was the last block of data */ 360 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 361 ((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0)) || 362 /* stop at gap request */ 363 (s->stopped_state == sdhc_gap_read && 364 !(s->prnsts & SDHC_DAT_LINE_ACTIVE))) { 365 sdhci_end_transfer(s); 366 } else { /* if there are more data, read next block from card */ 367 sdhci_read_block_from_card(s); 368 } 369 break; 370 } 371 } 372 373 return value; 374 } 375 376 /* Write data from host controller FIFO to card */ 377 static void sdhci_write_block_to_card(SDHCIState *s) 378 { 379 int index = 0; 380 381 if (s->prnsts & SDHC_SPACE_AVAILABLE) { 382 if (s->norintstsen & SDHC_NISEN_WBUFRDY) { 383 s->norintsts |= SDHC_NIS_WBUFRDY; 384 } 385 sdhci_update_irq(s); 386 return; 387 } 388 389 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 390 if (s->blkcnt == 0) { 391 return; 392 } else { 393 s->blkcnt--; 394 } 395 } 396 397 for (index = 0; index < (s->blksize & 0x0fff); index++) { 398 sd_write_data(s->card, s->fifo_buffer[index]); 399 } 400 401 /* Next data can be written through BUFFER DATORT register */ 402 s->prnsts |= SDHC_SPACE_AVAILABLE; 403 404 /* Finish transfer if that was the last block of data */ 405 if ((s->trnmod & SDHC_TRNS_MULTI) == 0 || 406 ((s->trnmod & SDHC_TRNS_MULTI) && 407 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && (s->blkcnt == 0))) { 408 sdhci_end_transfer(s); 409 } else if (s->norintstsen & SDHC_NISEN_WBUFRDY) { 410 s->norintsts |= SDHC_NIS_WBUFRDY; 411 } 412 413 /* Generate Block Gap Event if requested and if not the last block */ 414 if (s->stopped_state == sdhc_gap_write && (s->trnmod & SDHC_TRNS_MULTI) && 415 s->blkcnt > 0) { 416 s->prnsts &= ~SDHC_DOING_WRITE; 417 if (s->norintstsen & SDHC_EISEN_BLKGAP) { 418 s->norintsts |= SDHC_EIS_BLKGAP; 419 } 420 sdhci_end_transfer(s); 421 } 422 423 sdhci_update_irq(s); 424 } 425 426 /* Write @size bytes of @value data to host controller @s Buffer Data Port 427 * register */ 428 static void sdhci_write_dataport(SDHCIState *s, uint32_t value, unsigned size) 429 { 430 unsigned i; 431 432 /* Check that there is free space left in a buffer */ 433 if (!(s->prnsts & SDHC_SPACE_AVAILABLE)) { 434 ERRPRINT("Can't write to data buffer: buffer full\n"); 435 return; 436 } 437 438 for (i = 0; i < size; i++) { 439 s->fifo_buffer[s->data_count] = value & 0xFF; 440 s->data_count++; 441 value >>= 8; 442 if (s->data_count >= (s->blksize & 0x0fff)) { 443 DPRINT_L2("write buffer filled with %u bytes of data\n", 444 s->data_count); 445 s->data_count = 0; 446 s->prnsts &= ~SDHC_SPACE_AVAILABLE; 447 if (s->prnsts & SDHC_DOING_WRITE) { 448 sdhci_write_block_to_card(s); 449 } 450 } 451 } 452 } 453 454 /* 455 * Single DMA data transfer 456 */ 457 458 /* Multi block SDMA transfer */ 459 static void sdhci_sdma_transfer_multi_blocks(SDHCIState *s) 460 { 461 bool page_aligned = false; 462 unsigned int n, begin; 463 const uint16_t block_size = s->blksize & 0x0fff; 464 uint32_t boundary_chk = 1 << (((s->blksize & 0xf000) >> 12) + 12); 465 uint32_t boundary_count = boundary_chk - (s->sdmasysad % boundary_chk); 466 467 /* XXX: Some sd/mmc drivers (for example, u-boot-slp) do not account for 468 * possible stop at page boundary if initial address is not page aligned, 469 * allow them to work properly */ 470 if ((s->sdmasysad % boundary_chk) == 0) { 471 page_aligned = true; 472 } 473 474 if (s->trnmod & SDHC_TRNS_READ) { 475 s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | 476 SDHC_DAT_LINE_ACTIVE; 477 while (s->blkcnt) { 478 if (s->data_count == 0) { 479 for (n = 0; n < block_size; n++) { 480 s->fifo_buffer[n] = sd_read_data(s->card); 481 } 482 } 483 begin = s->data_count; 484 if (((boundary_count + begin) < block_size) && page_aligned) { 485 s->data_count = boundary_count + begin; 486 boundary_count = 0; 487 } else { 488 s->data_count = block_size; 489 boundary_count -= block_size - begin; 490 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 491 s->blkcnt--; 492 } 493 } 494 dma_memory_write(&address_space_memory, s->sdmasysad, 495 &s->fifo_buffer[begin], s->data_count - begin); 496 s->sdmasysad += s->data_count - begin; 497 if (s->data_count == block_size) { 498 s->data_count = 0; 499 } 500 if (page_aligned && boundary_count == 0) { 501 break; 502 } 503 } 504 } else { 505 s->prnsts |= SDHC_DOING_WRITE | SDHC_DATA_INHIBIT | 506 SDHC_DAT_LINE_ACTIVE; 507 while (s->blkcnt) { 508 begin = s->data_count; 509 if (((boundary_count + begin) < block_size) && page_aligned) { 510 s->data_count = boundary_count + begin; 511 boundary_count = 0; 512 } else { 513 s->data_count = block_size; 514 boundary_count -= block_size - begin; 515 } 516 dma_memory_read(&address_space_memory, s->sdmasysad, 517 &s->fifo_buffer[begin], s->data_count); 518 s->sdmasysad += s->data_count - begin; 519 if (s->data_count == block_size) { 520 for (n = 0; n < block_size; n++) { 521 sd_write_data(s->card, s->fifo_buffer[n]); 522 } 523 s->data_count = 0; 524 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 525 s->blkcnt--; 526 } 527 } 528 if (page_aligned && boundary_count == 0) { 529 break; 530 } 531 } 532 } 533 534 if (s->blkcnt == 0) { 535 sdhci_end_transfer(s); 536 } else { 537 if (s->norintstsen & SDHC_NISEN_DMA) { 538 s->norintsts |= SDHC_NIS_DMA; 539 } 540 sdhci_update_irq(s); 541 } 542 } 543 544 /* single block SDMA transfer */ 545 546 static void sdhci_sdma_transfer_single_block(SDHCIState *s) 547 { 548 int n; 549 uint32_t datacnt = s->blksize & 0x0fff; 550 551 if (s->trnmod & SDHC_TRNS_READ) { 552 for (n = 0; n < datacnt; n++) { 553 s->fifo_buffer[n] = sd_read_data(s->card); 554 } 555 dma_memory_write(&address_space_memory, s->sdmasysad, s->fifo_buffer, 556 datacnt); 557 } else { 558 dma_memory_read(&address_space_memory, s->sdmasysad, s->fifo_buffer, 559 datacnt); 560 for (n = 0; n < datacnt; n++) { 561 sd_write_data(s->card, s->fifo_buffer[n]); 562 } 563 } 564 565 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 566 s->blkcnt--; 567 } 568 569 sdhci_end_transfer(s); 570 } 571 572 typedef struct ADMADescr { 573 hwaddr addr; 574 uint16_t length; 575 uint8_t attr; 576 uint8_t incr; 577 } ADMADescr; 578 579 static void get_adma_description(SDHCIState *s, ADMADescr *dscr) 580 { 581 uint32_t adma1 = 0; 582 uint64_t adma2 = 0; 583 hwaddr entry_addr = (hwaddr)s->admasysaddr; 584 switch (SDHC_DMA_TYPE(s->hostctl)) { 585 case SDHC_CTRL_ADMA2_32: 586 dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma2, 587 sizeof(adma2)); 588 adma2 = le64_to_cpu(adma2); 589 /* The spec does not specify endianness of descriptor table. 590 * We currently assume that it is LE. 591 */ 592 dscr->addr = (hwaddr)extract64(adma2, 32, 32) & ~0x3ull; 593 dscr->length = (uint16_t)extract64(adma2, 16, 16); 594 dscr->attr = (uint8_t)extract64(adma2, 0, 7); 595 dscr->incr = 8; 596 break; 597 case SDHC_CTRL_ADMA1_32: 598 dma_memory_read(&address_space_memory, entry_addr, (uint8_t *)&adma1, 599 sizeof(adma1)); 600 adma1 = le32_to_cpu(adma1); 601 dscr->addr = (hwaddr)(adma1 & 0xFFFFF000); 602 dscr->attr = (uint8_t)extract32(adma1, 0, 7); 603 dscr->incr = 4; 604 if ((dscr->attr & SDHC_ADMA_ATTR_ACT_MASK) == SDHC_ADMA_ATTR_SET_LEN) { 605 dscr->length = (uint16_t)extract32(adma1, 12, 16); 606 } else { 607 dscr->length = 4096; 608 } 609 break; 610 case SDHC_CTRL_ADMA2_64: 611 dma_memory_read(&address_space_memory, entry_addr, 612 (uint8_t *)(&dscr->attr), 1); 613 dma_memory_read(&address_space_memory, entry_addr + 2, 614 (uint8_t *)(&dscr->length), 2); 615 dscr->length = le16_to_cpu(dscr->length); 616 dma_memory_read(&address_space_memory, entry_addr + 4, 617 (uint8_t *)(&dscr->addr), 8); 618 dscr->attr = le64_to_cpu(dscr->attr); 619 dscr->attr &= 0xfffffff8; 620 dscr->incr = 12; 621 break; 622 } 623 } 624 625 /* Advanced DMA data transfer */ 626 627 static void sdhci_do_adma(SDHCIState *s) 628 { 629 unsigned int n, begin, length; 630 const uint16_t block_size = s->blksize & 0x0fff; 631 ADMADescr dscr; 632 int i; 633 634 for (i = 0; i < SDHC_ADMA_DESCS_PER_DELAY; ++i) { 635 s->admaerr &= ~SDHC_ADMAERR_LENGTH_MISMATCH; 636 637 get_adma_description(s, &dscr); 638 DPRINT_L2("ADMA loop: addr=" TARGET_FMT_plx ", len=%d, attr=%x\n", 639 dscr.addr, dscr.length, dscr.attr); 640 641 if ((dscr.attr & SDHC_ADMA_ATTR_VALID) == 0) { 642 /* Indicate that error occurred in ST_FDS state */ 643 s->admaerr &= ~SDHC_ADMAERR_STATE_MASK; 644 s->admaerr |= SDHC_ADMAERR_STATE_ST_FDS; 645 646 /* Generate ADMA error interrupt */ 647 if (s->errintstsen & SDHC_EISEN_ADMAERR) { 648 s->errintsts |= SDHC_EIS_ADMAERR; 649 s->norintsts |= SDHC_NIS_ERR; 650 } 651 652 sdhci_update_irq(s); 653 return; 654 } 655 656 length = dscr.length ? dscr.length : 65536; 657 658 switch (dscr.attr & SDHC_ADMA_ATTR_ACT_MASK) { 659 case SDHC_ADMA_ATTR_ACT_TRAN: /* data transfer */ 660 661 if (s->trnmod & SDHC_TRNS_READ) { 662 while (length) { 663 if (s->data_count == 0) { 664 for (n = 0; n < block_size; n++) { 665 s->fifo_buffer[n] = sd_read_data(s->card); 666 } 667 } 668 begin = s->data_count; 669 if ((length + begin) < block_size) { 670 s->data_count = length + begin; 671 length = 0; 672 } else { 673 s->data_count = block_size; 674 length -= block_size - begin; 675 } 676 dma_memory_write(&address_space_memory, dscr.addr, 677 &s->fifo_buffer[begin], 678 s->data_count - begin); 679 dscr.addr += s->data_count - begin; 680 if (s->data_count == block_size) { 681 s->data_count = 0; 682 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 683 s->blkcnt--; 684 if (s->blkcnt == 0) { 685 break; 686 } 687 } 688 } 689 } 690 } else { 691 while (length) { 692 begin = s->data_count; 693 if ((length + begin) < block_size) { 694 s->data_count = length + begin; 695 length = 0; 696 } else { 697 s->data_count = block_size; 698 length -= block_size - begin; 699 } 700 dma_memory_read(&address_space_memory, dscr.addr, 701 &s->fifo_buffer[begin], 702 s->data_count - begin); 703 dscr.addr += s->data_count - begin; 704 if (s->data_count == block_size) { 705 for (n = 0; n < block_size; n++) { 706 sd_write_data(s->card, s->fifo_buffer[n]); 707 } 708 s->data_count = 0; 709 if (s->trnmod & SDHC_TRNS_BLK_CNT_EN) { 710 s->blkcnt--; 711 if (s->blkcnt == 0) { 712 break; 713 } 714 } 715 } 716 } 717 } 718 s->admasysaddr += dscr.incr; 719 break; 720 case SDHC_ADMA_ATTR_ACT_LINK: /* link to next descriptor table */ 721 s->admasysaddr = dscr.addr; 722 DPRINT_L1("ADMA link: admasysaddr=0x%" PRIx64 "\n", 723 s->admasysaddr); 724 break; 725 default: 726 s->admasysaddr += dscr.incr; 727 break; 728 } 729 730 if (dscr.attr & SDHC_ADMA_ATTR_INT) { 731 DPRINT_L1("ADMA interrupt: admasysaddr=0x%" PRIx64 "\n", 732 s->admasysaddr); 733 if (s->norintstsen & SDHC_NISEN_DMA) { 734 s->norintsts |= SDHC_NIS_DMA; 735 } 736 737 sdhci_update_irq(s); 738 } 739 740 /* ADMA transfer terminates if blkcnt == 0 or by END attribute */ 741 if (((s->trnmod & SDHC_TRNS_BLK_CNT_EN) && 742 (s->blkcnt == 0)) || (dscr.attr & SDHC_ADMA_ATTR_END)) { 743 DPRINT_L2("ADMA transfer completed\n"); 744 if (length || ((dscr.attr & SDHC_ADMA_ATTR_END) && 745 (s->trnmod & SDHC_TRNS_BLK_CNT_EN) && 746 s->blkcnt != 0)) { 747 ERRPRINT("SD/MMC host ADMA length mismatch\n"); 748 s->admaerr |= SDHC_ADMAERR_LENGTH_MISMATCH | 749 SDHC_ADMAERR_STATE_ST_TFR; 750 if (s->errintstsen & SDHC_EISEN_ADMAERR) { 751 ERRPRINT("Set ADMA error flag\n"); 752 s->errintsts |= SDHC_EIS_ADMAERR; 753 s->norintsts |= SDHC_NIS_ERR; 754 } 755 756 sdhci_update_irq(s); 757 } 758 sdhci_end_transfer(s); 759 return; 760 } 761 762 } 763 764 /* we have unfinished business - reschedule to continue ADMA */ 765 timer_mod(s->transfer_timer, 766 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + SDHC_TRANSFER_DELAY); 767 } 768 769 /* Perform data transfer according to controller configuration */ 770 771 static void sdhci_data_transfer(void *opaque) 772 { 773 SDHCIState *s = (SDHCIState *)opaque; 774 775 if (s->trnmod & SDHC_TRNS_DMA) { 776 switch (SDHC_DMA_TYPE(s->hostctl)) { 777 case SDHC_CTRL_SDMA: 778 if ((s->trnmod & SDHC_TRNS_MULTI) && 779 (!(s->trnmod & SDHC_TRNS_BLK_CNT_EN) || s->blkcnt == 0)) { 780 break; 781 } 782 783 if ((s->blkcnt == 1) || !(s->trnmod & SDHC_TRNS_MULTI)) { 784 sdhci_sdma_transfer_single_block(s); 785 } else { 786 sdhci_sdma_transfer_multi_blocks(s); 787 } 788 789 break; 790 case SDHC_CTRL_ADMA1_32: 791 if (!(s->capareg & SDHC_CAN_DO_ADMA1)) { 792 ERRPRINT("ADMA1 not supported\n"); 793 break; 794 } 795 796 sdhci_do_adma(s); 797 break; 798 case SDHC_CTRL_ADMA2_32: 799 if (!(s->capareg & SDHC_CAN_DO_ADMA2)) { 800 ERRPRINT("ADMA2 not supported\n"); 801 break; 802 } 803 804 sdhci_do_adma(s); 805 break; 806 case SDHC_CTRL_ADMA2_64: 807 if (!(s->capareg & SDHC_CAN_DO_ADMA2) || 808 !(s->capareg & SDHC_64_BIT_BUS_SUPPORT)) { 809 ERRPRINT("64 bit ADMA not supported\n"); 810 break; 811 } 812 813 sdhci_do_adma(s); 814 break; 815 default: 816 ERRPRINT("Unsupported DMA type\n"); 817 break; 818 } 819 } else { 820 if ((s->trnmod & SDHC_TRNS_READ) && sd_data_ready(s->card)) { 821 s->prnsts |= SDHC_DOING_READ | SDHC_DATA_INHIBIT | 822 SDHC_DAT_LINE_ACTIVE; 823 sdhci_read_block_from_card(s); 824 } else { 825 s->prnsts |= SDHC_DOING_WRITE | SDHC_DAT_LINE_ACTIVE | 826 SDHC_SPACE_AVAILABLE | SDHC_DATA_INHIBIT; 827 sdhci_write_block_to_card(s); 828 } 829 } 830 } 831 832 static bool sdhci_can_issue_command(SDHCIState *s) 833 { 834 if (!SDHC_CLOCK_IS_ON(s->clkcon) || !(s->pwrcon & SDHC_POWER_ON) || 835 (((s->prnsts & SDHC_DATA_INHIBIT) || s->stopped_state) && 836 ((s->cmdreg & SDHC_CMD_DATA_PRESENT) || 837 ((s->cmdreg & SDHC_CMD_RESPONSE) == SDHC_CMD_RSP_WITH_BUSY && 838 !(SDHC_COMMAND_TYPE(s->cmdreg) == SDHC_CMD_ABORT))))) { 839 return false; 840 } 841 842 return true; 843 } 844 845 /* The Buffer Data Port register must be accessed in sequential and 846 * continuous manner */ 847 static inline bool 848 sdhci_buff_access_is_sequential(SDHCIState *s, unsigned byte_num) 849 { 850 if ((s->data_count & 0x3) != byte_num) { 851 ERRPRINT("Non-sequential access to Buffer Data Port register" 852 "is prohibited\n"); 853 return false; 854 } 855 return true; 856 } 857 858 static uint64_t sdhci_read(void *opaque, hwaddr offset, unsigned size) 859 { 860 SDHCIState *s = (SDHCIState *)opaque; 861 uint32_t ret = 0; 862 863 switch (offset & ~0x3) { 864 case SDHC_SYSAD: 865 ret = s->sdmasysad; 866 break; 867 case SDHC_BLKSIZE: 868 ret = s->blksize | (s->blkcnt << 16); 869 break; 870 case SDHC_ARGUMENT: 871 ret = s->argument; 872 break; 873 case SDHC_TRNMOD: 874 ret = s->trnmod | (s->cmdreg << 16); 875 break; 876 case SDHC_RSPREG0 ... SDHC_RSPREG3: 877 ret = s->rspreg[((offset & ~0x3) - SDHC_RSPREG0) >> 2]; 878 break; 879 case SDHC_BDATA: 880 if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { 881 ret = sdhci_read_dataport(s, size); 882 DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, (int)offset, 883 ret, ret); 884 return ret; 885 } 886 break; 887 case SDHC_PRNSTS: 888 ret = s->prnsts; 889 break; 890 case SDHC_HOSTCTL: 891 ret = s->hostctl | (s->pwrcon << 8) | (s->blkgap << 16) | 892 (s->wakcon << 24); 893 break; 894 case SDHC_CLKCON: 895 ret = s->clkcon | (s->timeoutcon << 16); 896 break; 897 case SDHC_NORINTSTS: 898 ret = s->norintsts | (s->errintsts << 16); 899 break; 900 case SDHC_NORINTSTSEN: 901 ret = s->norintstsen | (s->errintstsen << 16); 902 break; 903 case SDHC_NORINTSIGEN: 904 ret = s->norintsigen | (s->errintsigen << 16); 905 break; 906 case SDHC_ACMD12ERRSTS: 907 ret = s->acmd12errsts; 908 break; 909 case SDHC_CAPAREG: 910 ret = s->capareg; 911 break; 912 case SDHC_MAXCURR: 913 ret = s->maxcurr; 914 break; 915 case SDHC_ADMAERR: 916 ret = s->admaerr; 917 break; 918 case SDHC_ADMASYSADDR: 919 ret = (uint32_t)s->admasysaddr; 920 break; 921 case SDHC_ADMASYSADDR + 4: 922 ret = (uint32_t)(s->admasysaddr >> 32); 923 break; 924 case SDHC_SLOT_INT_STATUS: 925 ret = (SD_HOST_SPECv2_VERS << 16) | sdhci_slotint(s); 926 break; 927 default: 928 ERRPRINT("bad %ub read: addr[0x%04x]\n", size, (int)offset); 929 break; 930 } 931 932 ret >>= (offset & 0x3) * 8; 933 ret &= (1ULL << (size * 8)) - 1; 934 DPRINT_L2("read %ub: addr[0x%04x] -> %u(0x%x)\n", size, (int)offset, ret, ret); 935 return ret; 936 } 937 938 static inline void sdhci_blkgap_write(SDHCIState *s, uint8_t value) 939 { 940 if ((value & SDHC_STOP_AT_GAP_REQ) && (s->blkgap & SDHC_STOP_AT_GAP_REQ)) { 941 return; 942 } 943 s->blkgap = value & SDHC_STOP_AT_GAP_REQ; 944 945 if ((value & SDHC_CONTINUE_REQ) && s->stopped_state && 946 (s->blkgap & SDHC_STOP_AT_GAP_REQ) == 0) { 947 if (s->stopped_state == sdhc_gap_read) { 948 s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_READ; 949 sdhci_read_block_from_card(s); 950 } else { 951 s->prnsts |= SDHC_DAT_LINE_ACTIVE | SDHC_DOING_WRITE; 952 sdhci_write_block_to_card(s); 953 } 954 s->stopped_state = sdhc_not_stopped; 955 } else if (!s->stopped_state && (value & SDHC_STOP_AT_GAP_REQ)) { 956 if (s->prnsts & SDHC_DOING_READ) { 957 s->stopped_state = sdhc_gap_read; 958 } else if (s->prnsts & SDHC_DOING_WRITE) { 959 s->stopped_state = sdhc_gap_write; 960 } 961 } 962 } 963 964 static inline void sdhci_reset_write(SDHCIState *s, uint8_t value) 965 { 966 switch (value) { 967 case SDHC_RESET_ALL: 968 sdhci_reset(s); 969 break; 970 case SDHC_RESET_CMD: 971 s->prnsts &= ~SDHC_CMD_INHIBIT; 972 s->norintsts &= ~SDHC_NIS_CMDCMP; 973 break; 974 case SDHC_RESET_DATA: 975 s->data_count = 0; 976 s->prnsts &= ~(SDHC_SPACE_AVAILABLE | SDHC_DATA_AVAILABLE | 977 SDHC_DOING_READ | SDHC_DOING_WRITE | 978 SDHC_DATA_INHIBIT | SDHC_DAT_LINE_ACTIVE); 979 s->blkgap &= ~(SDHC_STOP_AT_GAP_REQ | SDHC_CONTINUE_REQ); 980 s->stopped_state = sdhc_not_stopped; 981 s->norintsts &= ~(SDHC_NIS_WBUFRDY | SDHC_NIS_RBUFRDY | 982 SDHC_NIS_DMA | SDHC_NIS_TRSCMP | SDHC_NIS_BLKGAP); 983 break; 984 } 985 } 986 987 static void 988 sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size) 989 { 990 SDHCIState *s = (SDHCIState *)opaque; 991 unsigned shift = 8 * (offset & 0x3); 992 uint32_t mask = ~(((1ULL << (size * 8)) - 1) << shift); 993 uint32_t value = val; 994 value <<= shift; 995 996 switch (offset & ~0x3) { 997 case SDHC_SYSAD: 998 s->sdmasysad = (s->sdmasysad & mask) | value; 999 MASKED_WRITE(s->sdmasysad, mask, value); 1000 /* Writing to last byte of sdmasysad might trigger transfer */ 1001 if (!(mask & 0xFF000000) && TRANSFERRING_DATA(s->prnsts) && s->blkcnt && 1002 s->blksize && SDHC_DMA_TYPE(s->hostctl) == SDHC_CTRL_SDMA) { 1003 sdhci_sdma_transfer_multi_blocks(s); 1004 } 1005 break; 1006 case SDHC_BLKSIZE: 1007 if (!TRANSFERRING_DATA(s->prnsts)) { 1008 MASKED_WRITE(s->blksize, mask, value); 1009 MASKED_WRITE(s->blkcnt, mask >> 16, value >> 16); 1010 } 1011 1012 /* Limit block size to the maximum buffer size */ 1013 if (extract32(s->blksize, 0, 12) > s->buf_maxsz) { 1014 qemu_log_mask(LOG_GUEST_ERROR, "%s: Size 0x%x is larger than " \ 1015 "the maximum buffer 0x%x", __func__, s->blksize, 1016 s->buf_maxsz); 1017 1018 s->blksize = deposit32(s->blksize, 0, 12, s->buf_maxsz); 1019 } 1020 1021 break; 1022 case SDHC_ARGUMENT: 1023 MASKED_WRITE(s->argument, mask, value); 1024 break; 1025 case SDHC_TRNMOD: 1026 /* DMA can be enabled only if it is supported as indicated by 1027 * capabilities register */ 1028 if (!(s->capareg & SDHC_CAN_DO_DMA)) { 1029 value &= ~SDHC_TRNS_DMA; 1030 } 1031 MASKED_WRITE(s->trnmod, mask, value); 1032 MASKED_WRITE(s->cmdreg, mask >> 16, value >> 16); 1033 1034 /* Writing to the upper byte of CMDREG triggers SD command generation */ 1035 if ((mask & 0xFF000000) || !sdhci_can_issue_command(s)) { 1036 break; 1037 } 1038 1039 sdhci_send_command(s); 1040 break; 1041 case SDHC_BDATA: 1042 if (sdhci_buff_access_is_sequential(s, offset - SDHC_BDATA)) { 1043 sdhci_write_dataport(s, value >> shift, size); 1044 } 1045 break; 1046 case SDHC_HOSTCTL: 1047 if (!(mask & 0xFF0000)) { 1048 sdhci_blkgap_write(s, value >> 16); 1049 } 1050 MASKED_WRITE(s->hostctl, mask, value); 1051 MASKED_WRITE(s->pwrcon, mask >> 8, value >> 8); 1052 MASKED_WRITE(s->wakcon, mask >> 24, value >> 24); 1053 if (!(s->prnsts & SDHC_CARD_PRESENT) || ((s->pwrcon >> 1) & 0x7) < 5 || 1054 !(s->capareg & (1 << (31 - ((s->pwrcon >> 1) & 0x7))))) { 1055 s->pwrcon &= ~SDHC_POWER_ON; 1056 } 1057 break; 1058 case SDHC_CLKCON: 1059 if (!(mask & 0xFF000000)) { 1060 sdhci_reset_write(s, value >> 24); 1061 } 1062 MASKED_WRITE(s->clkcon, mask, value); 1063 MASKED_WRITE(s->timeoutcon, mask >> 16, value >> 16); 1064 if (s->clkcon & SDHC_CLOCK_INT_EN) { 1065 s->clkcon |= SDHC_CLOCK_INT_STABLE; 1066 } else { 1067 s->clkcon &= ~SDHC_CLOCK_INT_STABLE; 1068 } 1069 break; 1070 case SDHC_NORINTSTS: 1071 if (s->norintstsen & SDHC_NISEN_CARDINT) { 1072 value &= ~SDHC_NIS_CARDINT; 1073 } 1074 s->norintsts &= mask | ~value; 1075 s->errintsts &= (mask >> 16) | ~(value >> 16); 1076 if (s->errintsts) { 1077 s->norintsts |= SDHC_NIS_ERR; 1078 } else { 1079 s->norintsts &= ~SDHC_NIS_ERR; 1080 } 1081 sdhci_update_irq(s); 1082 break; 1083 case SDHC_NORINTSTSEN: 1084 MASKED_WRITE(s->norintstsen, mask, value); 1085 MASKED_WRITE(s->errintstsen, mask >> 16, value >> 16); 1086 s->norintsts &= s->norintstsen; 1087 s->errintsts &= s->errintstsen; 1088 if (s->errintsts) { 1089 s->norintsts |= SDHC_NIS_ERR; 1090 } else { 1091 s->norintsts &= ~SDHC_NIS_ERR; 1092 } 1093 sdhci_update_irq(s); 1094 break; 1095 case SDHC_NORINTSIGEN: 1096 MASKED_WRITE(s->norintsigen, mask, value); 1097 MASKED_WRITE(s->errintsigen, mask >> 16, value >> 16); 1098 sdhci_update_irq(s); 1099 break; 1100 case SDHC_ADMAERR: 1101 MASKED_WRITE(s->admaerr, mask, value); 1102 break; 1103 case SDHC_ADMASYSADDR: 1104 s->admasysaddr = (s->admasysaddr & (0xFFFFFFFF00000000ULL | 1105 (uint64_t)mask)) | (uint64_t)value; 1106 break; 1107 case SDHC_ADMASYSADDR + 4: 1108 s->admasysaddr = (s->admasysaddr & (0x00000000FFFFFFFFULL | 1109 ((uint64_t)mask << 32))) | ((uint64_t)value << 32); 1110 break; 1111 case SDHC_FEAER: 1112 s->acmd12errsts |= value; 1113 s->errintsts |= (value >> 16) & s->errintstsen; 1114 if (s->acmd12errsts) { 1115 s->errintsts |= SDHC_EIS_CMD12ERR; 1116 } 1117 if (s->errintsts) { 1118 s->norintsts |= SDHC_NIS_ERR; 1119 } 1120 sdhci_update_irq(s); 1121 break; 1122 default: 1123 ERRPRINT("bad %ub write offset: addr[0x%04x] <- %u(0x%x)\n", 1124 size, (int)offset, value >> shift, value >> shift); 1125 break; 1126 } 1127 DPRINT_L2("write %ub: addr[0x%04x] <- %u(0x%x)\n", 1128 size, (int)offset, value >> shift, value >> shift); 1129 } 1130 1131 static const MemoryRegionOps sdhci_mmio_ops = { 1132 .read = sdhci_read, 1133 .write = sdhci_write, 1134 .valid = { 1135 .min_access_size = 1, 1136 .max_access_size = 4, 1137 .unaligned = false 1138 }, 1139 .endianness = DEVICE_LITTLE_ENDIAN, 1140 }; 1141 1142 static inline unsigned int sdhci_get_fifolen(SDHCIState *s) 1143 { 1144 switch (SDHC_CAPAB_BLOCKSIZE(s->capareg)) { 1145 case 0: 1146 return 512; 1147 case 1: 1148 return 1024; 1149 case 2: 1150 return 2048; 1151 default: 1152 hw_error("SDHC: unsupported value for maximum block size\n"); 1153 return 0; 1154 } 1155 } 1156 1157 static void sdhci_initfn(SDHCIState *s, BlockBackend *blk) 1158 { 1159 s->card = sd_init(blk, false); 1160 if (s->card == NULL) { 1161 exit(1); 1162 } 1163 s->eject_cb = qemu_allocate_irq(sdhci_insert_eject_cb, s, 0); 1164 s->ro_cb = qemu_allocate_irq(sdhci_card_readonly_cb, s, 0); 1165 sd_set_cb(s->card, s->ro_cb, s->eject_cb); 1166 1167 s->insert_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_raise_insertion_irq, s); 1168 s->transfer_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sdhci_data_transfer, s); 1169 } 1170 1171 static void sdhci_uninitfn(SDHCIState *s) 1172 { 1173 timer_del(s->insert_timer); 1174 timer_free(s->insert_timer); 1175 timer_del(s->transfer_timer); 1176 timer_free(s->transfer_timer); 1177 qemu_free_irq(s->eject_cb); 1178 qemu_free_irq(s->ro_cb); 1179 1180 g_free(s->fifo_buffer); 1181 s->fifo_buffer = NULL; 1182 } 1183 1184 const VMStateDescription sdhci_vmstate = { 1185 .name = "sdhci", 1186 .version_id = 1, 1187 .minimum_version_id = 1, 1188 .fields = (VMStateField[]) { 1189 VMSTATE_UINT32(sdmasysad, SDHCIState), 1190 VMSTATE_UINT16(blksize, SDHCIState), 1191 VMSTATE_UINT16(blkcnt, SDHCIState), 1192 VMSTATE_UINT32(argument, SDHCIState), 1193 VMSTATE_UINT16(trnmod, SDHCIState), 1194 VMSTATE_UINT16(cmdreg, SDHCIState), 1195 VMSTATE_UINT32_ARRAY(rspreg, SDHCIState, 4), 1196 VMSTATE_UINT32(prnsts, SDHCIState), 1197 VMSTATE_UINT8(hostctl, SDHCIState), 1198 VMSTATE_UINT8(pwrcon, SDHCIState), 1199 VMSTATE_UINT8(blkgap, SDHCIState), 1200 VMSTATE_UINT8(wakcon, SDHCIState), 1201 VMSTATE_UINT16(clkcon, SDHCIState), 1202 VMSTATE_UINT8(timeoutcon, SDHCIState), 1203 VMSTATE_UINT8(admaerr, SDHCIState), 1204 VMSTATE_UINT16(norintsts, SDHCIState), 1205 VMSTATE_UINT16(errintsts, SDHCIState), 1206 VMSTATE_UINT16(norintstsen, SDHCIState), 1207 VMSTATE_UINT16(errintstsen, SDHCIState), 1208 VMSTATE_UINT16(norintsigen, SDHCIState), 1209 VMSTATE_UINT16(errintsigen, SDHCIState), 1210 VMSTATE_UINT16(acmd12errsts, SDHCIState), 1211 VMSTATE_UINT16(data_count, SDHCIState), 1212 VMSTATE_UINT64(admasysaddr, SDHCIState), 1213 VMSTATE_UINT8(stopped_state, SDHCIState), 1214 VMSTATE_VBUFFER_UINT32(fifo_buffer, SDHCIState, 1, NULL, 0, buf_maxsz), 1215 VMSTATE_TIMER_PTR(insert_timer, SDHCIState), 1216 VMSTATE_TIMER_PTR(transfer_timer, SDHCIState), 1217 VMSTATE_END_OF_LIST() 1218 } 1219 }; 1220 1221 /* Capabilities registers provide information on supported features of this 1222 * specific host controller implementation */ 1223 static Property sdhci_pci_properties[] = { 1224 DEFINE_BLOCK_PROPERTIES(SDHCIState, conf), 1225 DEFINE_PROP_UINT32("capareg", SDHCIState, capareg, 1226 SDHC_CAPAB_REG_DEFAULT), 1227 DEFINE_PROP_UINT32("maxcurr", SDHCIState, maxcurr, 0), 1228 DEFINE_PROP_END_OF_LIST(), 1229 }; 1230 1231 static void sdhci_pci_realize(PCIDevice *dev, Error **errp) 1232 { 1233 SDHCIState *s = PCI_SDHCI(dev); 1234 dev->config[PCI_CLASS_PROG] = 0x01; /* Standard Host supported DMA */ 1235 dev->config[PCI_INTERRUPT_PIN] = 0x01; /* interrupt pin A */ 1236 sdhci_initfn(s, s->conf.blk); 1237 s->buf_maxsz = sdhci_get_fifolen(s); 1238 s->fifo_buffer = g_malloc0(s->buf_maxsz); 1239 s->irq = pci_allocate_irq(dev); 1240 memory_region_init_io(&s->iomem, OBJECT(s), &sdhci_mmio_ops, s, "sdhci", 1241 SDHC_REGISTERS_MAP_SIZE); 1242 pci_register_bar(dev, 0, 0, &s->iomem); 1243 } 1244 1245 static void sdhci_pci_exit(PCIDevice *dev) 1246 { 1247 SDHCIState *s = PCI_SDHCI(dev); 1248 sdhci_uninitfn(s); 1249 } 1250 1251 static void sdhci_pci_class_init(ObjectClass *klass, void *data) 1252 { 1253 DeviceClass *dc = DEVICE_CLASS(klass); 1254 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1255 1256 k->realize = sdhci_pci_realize; 1257 k->exit = sdhci_pci_exit; 1258 k->vendor_id = PCI_VENDOR_ID_REDHAT; 1259 k->device_id = PCI_DEVICE_ID_REDHAT_SDHCI; 1260 k->class_id = PCI_CLASS_SYSTEM_SDHCI; 1261 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 1262 dc->vmsd = &sdhci_vmstate; 1263 dc->props = sdhci_pci_properties; 1264 } 1265 1266 static const TypeInfo sdhci_pci_info = { 1267 .name = TYPE_PCI_SDHCI, 1268 .parent = TYPE_PCI_DEVICE, 1269 .instance_size = sizeof(SDHCIState), 1270 .class_init = sdhci_pci_class_init, 1271 }; 1272 1273 static Property sdhci_sysbus_properties[] = { 1274 DEFINE_PROP_UINT32("capareg", SDHCIState, capareg, 1275 SDHC_CAPAB_REG_DEFAULT), 1276 DEFINE_PROP_UINT32("maxcurr", SDHCIState, maxcurr, 0), 1277 DEFINE_PROP_END_OF_LIST(), 1278 }; 1279 1280 static void sdhci_sysbus_init(Object *obj) 1281 { 1282 SDHCIState *s = SYSBUS_SDHCI(obj); 1283 DriveInfo *di; 1284 1285 /* FIXME use a qdev drive property instead of drive_get_next() */ 1286 di = drive_get_next(IF_SD); 1287 sdhci_initfn(s, di ? blk_by_legacy_dinfo(di) : NULL); 1288 } 1289 1290 static void sdhci_sysbus_finalize(Object *obj) 1291 { 1292 SDHCIState *s = SYSBUS_SDHCI(obj); 1293 sdhci_uninitfn(s); 1294 } 1295 1296 static void sdhci_sysbus_realize(DeviceState *dev, Error ** errp) 1297 { 1298 SDHCIState *s = SYSBUS_SDHCI(dev); 1299 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1300 1301 s->buf_maxsz = sdhci_get_fifolen(s); 1302 s->fifo_buffer = g_malloc0(s->buf_maxsz); 1303 sysbus_init_irq(sbd, &s->irq); 1304 memory_region_init_io(&s->iomem, OBJECT(s), &sdhci_mmio_ops, s, "sdhci", 1305 SDHC_REGISTERS_MAP_SIZE); 1306 sysbus_init_mmio(sbd, &s->iomem); 1307 } 1308 1309 static void sdhci_sysbus_class_init(ObjectClass *klass, void *data) 1310 { 1311 DeviceClass *dc = DEVICE_CLASS(klass); 1312 1313 dc->vmsd = &sdhci_vmstate; 1314 dc->props = sdhci_sysbus_properties; 1315 dc->realize = sdhci_sysbus_realize; 1316 /* Reason: instance_init() method uses drive_get_next() */ 1317 dc->cannot_instantiate_with_device_add_yet = true; 1318 } 1319 1320 static const TypeInfo sdhci_sysbus_info = { 1321 .name = TYPE_SYSBUS_SDHCI, 1322 .parent = TYPE_SYS_BUS_DEVICE, 1323 .instance_size = sizeof(SDHCIState), 1324 .instance_init = sdhci_sysbus_init, 1325 .instance_finalize = sdhci_sysbus_finalize, 1326 .class_init = sdhci_sysbus_class_init, 1327 }; 1328 1329 static void sdhci_register_types(void) 1330 { 1331 type_register_static(&sdhci_pci_info); 1332 type_register_static(&sdhci_sysbus_info); 1333 } 1334 1335 type_init(sdhci_register_types) 1336