1 /* 2 * dwc-hsotg (dwc2) USB host controller emulation 3 * 4 * Based on hw/usb/hcd-ehci.c and hw/usb/hcd-ohci.c 5 * 6 * Note that to use this emulation with the dwc-otg driver in the 7 * Raspbian kernel, you must pass the option "dwc_otg.fiq_fsm_enable=0" 8 * on the kernel command line. 9 * 10 * Some useful documentation used to develop this emulation can be 11 * found online (as of April 2020) at: 12 * 13 * http://www.capital-micro.com/PDF/CME-M7_Family_User_Guide_EN.pdf 14 * which has a pretty complete description of the controller starting 15 * on page 370. 16 * 17 * https://sourceforge.net/p/wive-ng/wive-ng-mt/ci/master/tree/docs/DataSheets/RT3050_5x_V2.0_081408_0902.pdf 18 * which has a description of the controller registers starting on 19 * page 130. 20 * 21 * Copyright (c) 2020 Paul Zimmerman <pauldzim@gmail.com> 22 * 23 * This program is free software; you can redistribute it and/or modify 24 * it under the terms of the GNU General Public License as published by 25 * the Free Software Foundation; either version 2 of the License, or 26 * (at your option) any later version. 27 * 28 * This program is distributed in the hope that it will be useful, 29 * but WITHOUT ANY WARRANTY; without even the implied warranty of 30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 31 * GNU General Public License for more details. 32 */ 33 34 #include "qemu/osdep.h" 35 #include "qemu/units.h" 36 #include "qapi/error.h" 37 #include "hw/usb/dwc2-regs.h" 38 #include "hw/usb/hcd-dwc2.h" 39 #include "migration/vmstate.h" 40 #include "trace.h" 41 #include "qemu/log.h" 42 #include "qemu/error-report.h" 43 #include "qemu/main-loop.h" 44 #include "hw/qdev-properties.h" 45 46 #define USB_HZ_FS 12000000 47 #define USB_HZ_HS 96000000 48 #define USB_FRMINTVL 12000 49 50 /* nifty macros from Arnon's EHCI version */ 51 #define get_field(data, field) \ 52 (((data) & field##_MASK) >> field##_SHIFT) 53 54 #define set_field(data, newval, field) do { \ 55 uint32_t val = *(data); \ 56 val &= ~field##_MASK; \ 57 val |= ((newval) << field##_SHIFT) & field##_MASK; \ 58 *(data) = val; \ 59 } while (0) 60 61 #define get_bit(data, bitmask) \ 62 (!!((data) & (bitmask))) 63 64 /* update irq line */ 65 static inline void dwc2_update_irq(DWC2State *s) 66 { 67 static int oldlevel; 68 int level = 0; 69 70 if ((s->gintsts & s->gintmsk) && (s->gahbcfg & GAHBCFG_GLBL_INTR_EN)) { 71 level = 1; 72 } 73 if (level != oldlevel) { 74 oldlevel = level; 75 trace_usb_dwc2_update_irq(level); 76 qemu_set_irq(s->irq, level); 77 } 78 } 79 80 /* flag interrupt condition */ 81 static inline void dwc2_raise_global_irq(DWC2State *s, uint32_t intr) 82 { 83 if (!(s->gintsts & intr)) { 84 s->gintsts |= intr; 85 trace_usb_dwc2_raise_global_irq(intr); 86 dwc2_update_irq(s); 87 } 88 } 89 90 static inline void dwc2_lower_global_irq(DWC2State *s, uint32_t intr) 91 { 92 if (s->gintsts & intr) { 93 s->gintsts &= ~intr; 94 trace_usb_dwc2_lower_global_irq(intr); 95 dwc2_update_irq(s); 96 } 97 } 98 99 static inline void dwc2_raise_host_irq(DWC2State *s, uint32_t host_intr) 100 { 101 if (!(s->haint & host_intr)) { 102 s->haint |= host_intr; 103 s->haint &= 0xffff; 104 trace_usb_dwc2_raise_host_irq(host_intr); 105 if (s->haint & s->haintmsk) { 106 dwc2_raise_global_irq(s, GINTSTS_HCHINT); 107 } 108 } 109 } 110 111 static inline void dwc2_lower_host_irq(DWC2State *s, uint32_t host_intr) 112 { 113 if (s->haint & host_intr) { 114 s->haint &= ~host_intr; 115 trace_usb_dwc2_lower_host_irq(host_intr); 116 if (!(s->haint & s->haintmsk)) { 117 dwc2_lower_global_irq(s, GINTSTS_HCHINT); 118 } 119 } 120 } 121 122 static inline void dwc2_update_hc_irq(DWC2State *s, int index) 123 { 124 uint32_t host_intr = 1 << (index >> 3); 125 126 if (s->hreg1[index + 2] & s->hreg1[index + 3]) { 127 dwc2_raise_host_irq(s, host_intr); 128 } else { 129 dwc2_lower_host_irq(s, host_intr); 130 } 131 } 132 133 /* set a timer for EOF */ 134 static void dwc2_eof_timer(DWC2State *s) 135 { 136 timer_mod(s->eof_timer, s->sof_time + s->usb_frame_time); 137 } 138 139 /* Set a timer for EOF and generate SOF event */ 140 static void dwc2_sof(DWC2State *s) 141 { 142 s->sof_time += s->usb_frame_time; 143 trace_usb_dwc2_sof(s->sof_time); 144 dwc2_eof_timer(s); 145 dwc2_raise_global_irq(s, GINTSTS_SOF); 146 } 147 148 /* Do frame processing on frame boundary */ 149 static void dwc2_frame_boundary(void *opaque) 150 { 151 DWC2State *s = opaque; 152 int64_t now; 153 uint16_t frcnt; 154 155 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 156 157 /* Frame boundary, so do EOF stuff here */ 158 159 /* Increment frame number */ 160 frcnt = (uint16_t)((now - s->sof_time) / s->fi); 161 s->frame_number = (s->frame_number + frcnt) & 0xffff; 162 s->hfnum = s->frame_number & HFNUM_MAX_FRNUM; 163 164 /* Do SOF stuff here */ 165 dwc2_sof(s); 166 } 167 168 /* Start sending SOF tokens on the USB bus */ 169 static void dwc2_bus_start(DWC2State *s) 170 { 171 trace_usb_dwc2_bus_start(); 172 s->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 173 dwc2_eof_timer(s); 174 } 175 176 /* Stop sending SOF tokens on the USB bus */ 177 static void dwc2_bus_stop(DWC2State *s) 178 { 179 trace_usb_dwc2_bus_stop(); 180 timer_del(s->eof_timer); 181 } 182 183 static USBDevice *dwc2_find_device(DWC2State *s, uint8_t addr) 184 { 185 USBDevice *dev; 186 187 trace_usb_dwc2_find_device(addr); 188 189 if (!(s->hprt0 & HPRT0_ENA)) { 190 trace_usb_dwc2_port_disabled(0); 191 } else { 192 dev = usb_find_device(&s->uport, addr); 193 if (dev != NULL) { 194 trace_usb_dwc2_device_found(0); 195 return dev; 196 } 197 } 198 199 trace_usb_dwc2_device_not_found(); 200 return NULL; 201 } 202 203 static const char *pstatus[] = { 204 "USB_RET_SUCCESS", "USB_RET_NODEV", "USB_RET_NAK", "USB_RET_STALL", 205 "USB_RET_BABBLE", "USB_RET_IOERROR", "USB_RET_ASYNC", 206 "USB_RET_ADD_TO_QUEUE", "USB_RET_REMOVE_FROM_QUEUE" 207 }; 208 209 static uint32_t pintr[] = { 210 HCINTMSK_XFERCOMPL, HCINTMSK_XACTERR, HCINTMSK_NAK, HCINTMSK_STALL, 211 HCINTMSK_BBLERR, HCINTMSK_XACTERR, HCINTMSK_XACTERR, HCINTMSK_XACTERR, 212 HCINTMSK_XACTERR 213 }; 214 215 static const char *types[] = { 216 "Ctrl", "Isoc", "Bulk", "Intr" 217 }; 218 219 static const char *dirs[] = { 220 "Out", "In" 221 }; 222 223 static void dwc2_handle_packet(DWC2State *s, uint32_t devadr, USBDevice *dev, 224 USBEndpoint *ep, uint32_t index, bool send) 225 { 226 DWC2Packet *p; 227 uint32_t hcchar = s->hreg1[index]; 228 uint32_t hctsiz = s->hreg1[index + 4]; 229 uint32_t hcdma = s->hreg1[index + 5]; 230 uint32_t chan, epnum, epdir, eptype, mps, pid, pcnt, len, tlen, intr = 0; 231 uint32_t tpcnt, stsidx, actual = 0; 232 bool do_intr = false, done = false; 233 234 epnum = get_field(hcchar, HCCHAR_EPNUM); 235 epdir = get_bit(hcchar, HCCHAR_EPDIR); 236 eptype = get_field(hcchar, HCCHAR_EPTYPE); 237 mps = get_field(hcchar, HCCHAR_MPS); 238 pid = get_field(hctsiz, TSIZ_SC_MC_PID); 239 pcnt = get_field(hctsiz, TSIZ_PKTCNT); 240 len = get_field(hctsiz, TSIZ_XFERSIZE); 241 if (len > DWC2_MAX_XFER_SIZE) { 242 qemu_log_mask(LOG_GUEST_ERROR, 243 "%s: HCTSIZ transfer size too large\n", __func__); 244 return; 245 } 246 247 chan = index >> 3; 248 p = &s->packet[chan]; 249 250 trace_usb_dwc2_handle_packet(chan, dev, &p->packet, epnum, types[eptype], 251 dirs[epdir], mps, len, pcnt); 252 253 if (mps == 0) { 254 qemu_log_mask(LOG_GUEST_ERROR, 255 "%s: Bad HCCHAR_MPS set to zero\n", __func__); 256 return; 257 } 258 259 if (eptype == USB_ENDPOINT_XFER_CONTROL && pid == TSIZ_SC_MC_PID_SETUP) { 260 pid = USB_TOKEN_SETUP; 261 } else { 262 pid = epdir ? USB_TOKEN_IN : USB_TOKEN_OUT; 263 } 264 265 if (send) { 266 tlen = len; 267 if (p->small) { 268 if (tlen > mps) { 269 tlen = mps; 270 } 271 } 272 273 if (pid != USB_TOKEN_IN) { 274 trace_usb_dwc2_memory_read(hcdma, tlen); 275 if (dma_memory_read(&s->dma_as, hcdma, 276 s->usb_buf[chan], tlen) != MEMTX_OK) { 277 qemu_log_mask(LOG_GUEST_ERROR, "%s: dma_memory_read failed\n", 278 __func__); 279 } 280 } 281 282 usb_packet_init(&p->packet); 283 usb_packet_setup(&p->packet, pid, ep, 0, hcdma, 284 pid != USB_TOKEN_IN, true); 285 usb_packet_addbuf(&p->packet, s->usb_buf[chan], tlen); 286 p->async = DWC2_ASYNC_NONE; 287 usb_handle_packet(dev, &p->packet); 288 } else { 289 tlen = p->len; 290 } 291 292 stsidx = -p->packet.status; 293 assert(stsidx < sizeof(pstatus) / sizeof(*pstatus)); 294 actual = p->packet.actual_length; 295 trace_usb_dwc2_packet_status(pstatus[stsidx], actual); 296 297 babble: 298 if (p->packet.status != USB_RET_SUCCESS && 299 p->packet.status != USB_RET_NAK && 300 p->packet.status != USB_RET_STALL && 301 p->packet.status != USB_RET_ASYNC) { 302 trace_usb_dwc2_packet_error(pstatus[stsidx]); 303 } 304 305 if (p->packet.status == USB_RET_ASYNC) { 306 trace_usb_dwc2_async_packet(&p->packet, chan, dev, epnum, 307 dirs[epdir], tlen); 308 usb_device_flush_ep_queue(dev, ep); 309 assert(p->async != DWC2_ASYNC_INFLIGHT); 310 p->devadr = devadr; 311 p->epnum = epnum; 312 p->epdir = epdir; 313 p->mps = mps; 314 p->pid = pid; 315 p->index = index; 316 p->pcnt = pcnt; 317 p->len = tlen; 318 p->async = DWC2_ASYNC_INFLIGHT; 319 p->needs_service = false; 320 return; 321 } 322 323 if (p->packet.status == USB_RET_SUCCESS) { 324 if (actual > tlen) { 325 p->packet.status = USB_RET_BABBLE; 326 goto babble; 327 } 328 329 if (pid == USB_TOKEN_IN) { 330 trace_usb_dwc2_memory_write(hcdma, actual); 331 if (dma_memory_write(&s->dma_as, hcdma, s->usb_buf[chan], 332 actual) != MEMTX_OK) { 333 qemu_log_mask(LOG_GUEST_ERROR, "%s: dma_memory_write failed\n", 334 __func__); 335 } 336 } 337 338 tpcnt = actual / mps; 339 if (actual % mps) { 340 tpcnt++; 341 if (pid == USB_TOKEN_IN) { 342 done = true; 343 } 344 } 345 346 pcnt -= tpcnt < pcnt ? tpcnt : pcnt; 347 set_field(&hctsiz, pcnt, TSIZ_PKTCNT); 348 len -= actual < len ? actual : len; 349 set_field(&hctsiz, len, TSIZ_XFERSIZE); 350 s->hreg1[index + 4] = hctsiz; 351 hcdma += actual; 352 s->hreg1[index + 5] = hcdma; 353 354 if (!pcnt || len == 0 || actual == 0) { 355 done = true; 356 } 357 } else { 358 intr |= pintr[stsidx]; 359 if (p->packet.status == USB_RET_NAK && 360 (eptype == USB_ENDPOINT_XFER_CONTROL || 361 eptype == USB_ENDPOINT_XFER_BULK)) { 362 /* 363 * for ctrl/bulk, automatically retry on NAK, 364 * but send the interrupt anyway 365 */ 366 intr &= ~HCINTMSK_RESERVED14_31; 367 s->hreg1[index + 2] |= intr; 368 do_intr = true; 369 } else { 370 intr |= HCINTMSK_CHHLTD; 371 done = true; 372 } 373 } 374 375 usb_packet_cleanup(&p->packet); 376 377 if (done) { 378 hcchar &= ~HCCHAR_CHENA; 379 s->hreg1[index] = hcchar; 380 if (!(intr & HCINTMSK_CHHLTD)) { 381 intr |= HCINTMSK_CHHLTD | HCINTMSK_XFERCOMPL; 382 } 383 intr &= ~HCINTMSK_RESERVED14_31; 384 s->hreg1[index + 2] |= intr; 385 p->needs_service = false; 386 trace_usb_dwc2_packet_done(pstatus[stsidx], actual, len, pcnt); 387 dwc2_update_hc_irq(s, index); 388 return; 389 } 390 391 p->devadr = devadr; 392 p->epnum = epnum; 393 p->epdir = epdir; 394 p->mps = mps; 395 p->pid = pid; 396 p->index = index; 397 p->pcnt = pcnt; 398 p->len = len; 399 p->needs_service = true; 400 trace_usb_dwc2_packet_next(pstatus[stsidx], len, pcnt); 401 if (do_intr) { 402 dwc2_update_hc_irq(s, index); 403 } 404 } 405 406 /* Attach or detach a device on root hub */ 407 408 static const char *speeds[] = { 409 "low", "full", "high" 410 }; 411 412 static void dwc2_attach(USBPort *port) 413 { 414 DWC2State *s = port->opaque; 415 int hispd = 0; 416 417 trace_usb_dwc2_attach(port); 418 assert(port->index == 0); 419 420 if (!port->dev || !port->dev->attached) { 421 return; 422 } 423 424 assert(port->dev->speed <= USB_SPEED_HIGH); 425 trace_usb_dwc2_attach_speed(speeds[port->dev->speed]); 426 s->hprt0 &= ~HPRT0_SPD_MASK; 427 428 switch (port->dev->speed) { 429 case USB_SPEED_LOW: 430 s->hprt0 |= HPRT0_SPD_LOW_SPEED << HPRT0_SPD_SHIFT; 431 break; 432 case USB_SPEED_FULL: 433 s->hprt0 |= HPRT0_SPD_FULL_SPEED << HPRT0_SPD_SHIFT; 434 break; 435 case USB_SPEED_HIGH: 436 s->hprt0 |= HPRT0_SPD_HIGH_SPEED << HPRT0_SPD_SHIFT; 437 hispd = 1; 438 break; 439 } 440 441 if (hispd) { 442 s->usb_frame_time = NANOSECONDS_PER_SECOND / 8000; /* 125000 */ 443 if (NANOSECONDS_PER_SECOND >= USB_HZ_HS) { 444 s->usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ_HS; /* 10.4 */ 445 } else { 446 s->usb_bit_time = 1; 447 } 448 } else { 449 s->usb_frame_time = NANOSECONDS_PER_SECOND / 1000; /* 1000000 */ 450 if (NANOSECONDS_PER_SECOND >= USB_HZ_FS) { 451 s->usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ_FS; /* 83.3 */ 452 } else { 453 s->usb_bit_time = 1; 454 } 455 } 456 457 s->fi = USB_FRMINTVL - 1; 458 s->hprt0 |= HPRT0_CONNDET | HPRT0_CONNSTS; 459 460 dwc2_bus_start(s); 461 dwc2_raise_global_irq(s, GINTSTS_PRTINT); 462 } 463 464 static void dwc2_detach(USBPort *port) 465 { 466 DWC2State *s = port->opaque; 467 468 trace_usb_dwc2_detach(port); 469 assert(port->index == 0); 470 471 dwc2_bus_stop(s); 472 473 s->hprt0 &= ~(HPRT0_SPD_MASK | HPRT0_SUSP | HPRT0_ENA | HPRT0_CONNSTS); 474 s->hprt0 |= HPRT0_CONNDET | HPRT0_ENACHG; 475 476 dwc2_raise_global_irq(s, GINTSTS_PRTINT); 477 } 478 479 static void dwc2_child_detach(USBPort *port, USBDevice *child) 480 { 481 trace_usb_dwc2_child_detach(port, child); 482 assert(port->index == 0); 483 } 484 485 static void dwc2_wakeup(USBPort *port) 486 { 487 DWC2State *s = port->opaque; 488 489 trace_usb_dwc2_wakeup(port); 490 assert(port->index == 0); 491 492 if (s->hprt0 & HPRT0_SUSP) { 493 s->hprt0 |= HPRT0_RES; 494 dwc2_raise_global_irq(s, GINTSTS_PRTINT); 495 } 496 497 qemu_bh_schedule(s->async_bh); 498 } 499 500 static void dwc2_async_packet_complete(USBPort *port, USBPacket *packet) 501 { 502 DWC2State *s = port->opaque; 503 DWC2Packet *p; 504 USBDevice *dev; 505 USBEndpoint *ep; 506 507 assert(port->index == 0); 508 p = container_of(packet, DWC2Packet, packet); 509 dev = dwc2_find_device(s, p->devadr); 510 ep = usb_ep_get(dev, p->pid, p->epnum); 511 trace_usb_dwc2_async_packet_complete(port, packet, p->index >> 3, dev, 512 p->epnum, dirs[p->epdir], p->len); 513 assert(p->async == DWC2_ASYNC_INFLIGHT); 514 515 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) { 516 usb_cancel_packet(packet); 517 usb_packet_cleanup(packet); 518 return; 519 } 520 521 dwc2_handle_packet(s, p->devadr, dev, ep, p->index, false); 522 523 p->async = DWC2_ASYNC_FINISHED; 524 qemu_bh_schedule(s->async_bh); 525 } 526 527 static USBPortOps dwc2_port_ops = { 528 .attach = dwc2_attach, 529 .detach = dwc2_detach, 530 .child_detach = dwc2_child_detach, 531 .wakeup = dwc2_wakeup, 532 .complete = dwc2_async_packet_complete, 533 }; 534 535 static uint32_t dwc2_get_frame_remaining(DWC2State *s) 536 { 537 uint32_t fr = 0; 538 int64_t tks; 539 540 tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - s->sof_time; 541 if (tks < 0) { 542 tks = 0; 543 } 544 545 /* avoid muldiv if possible */ 546 if (tks >= s->usb_frame_time) { 547 goto out; 548 } 549 if (tks < s->usb_bit_time) { 550 fr = s->fi; 551 goto out; 552 } 553 554 /* tks = number of ns since SOF, divided by 83 (fs) or 10 (hs) */ 555 tks = tks / s->usb_bit_time; 556 if (tks >= (int64_t)s->fi) { 557 goto out; 558 } 559 560 /* remaining = frame interval minus tks */ 561 fr = (uint32_t)((int64_t)s->fi - tks); 562 563 out: 564 return fr; 565 } 566 567 static void dwc2_work_bh(void *opaque) 568 { 569 DWC2State *s = opaque; 570 DWC2Packet *p; 571 USBDevice *dev; 572 USBEndpoint *ep; 573 int64_t t_now, expire_time; 574 int chan; 575 bool found = false; 576 577 trace_usb_dwc2_work_bh(); 578 if (s->working) { 579 return; 580 } 581 s->working = true; 582 583 t_now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 584 chan = s->next_chan; 585 586 do { 587 p = &s->packet[chan]; 588 if (p->needs_service) { 589 dev = dwc2_find_device(s, p->devadr); 590 ep = usb_ep_get(dev, p->pid, p->epnum); 591 trace_usb_dwc2_work_bh_service(s->next_chan, chan, dev, p->epnum); 592 dwc2_handle_packet(s, p->devadr, dev, ep, p->index, true); 593 found = true; 594 } 595 if (++chan == DWC2_NB_CHAN) { 596 chan = 0; 597 } 598 if (found) { 599 s->next_chan = chan; 600 trace_usb_dwc2_work_bh_next(chan); 601 } 602 } while (chan != s->next_chan); 603 604 if (found) { 605 expire_time = t_now + NANOSECONDS_PER_SECOND / 4000; 606 timer_mod(s->frame_timer, expire_time); 607 } 608 s->working = false; 609 } 610 611 static void dwc2_enable_chan(DWC2State *s, uint32_t index) 612 { 613 USBDevice *dev; 614 USBEndpoint *ep; 615 uint32_t hcchar; 616 uint32_t hctsiz; 617 uint32_t devadr, epnum, epdir, eptype, pid, len; 618 DWC2Packet *p; 619 620 assert((index >> 3) < DWC2_NB_CHAN); 621 p = &s->packet[index >> 3]; 622 hcchar = s->hreg1[index]; 623 hctsiz = s->hreg1[index + 4]; 624 devadr = get_field(hcchar, HCCHAR_DEVADDR); 625 epnum = get_field(hcchar, HCCHAR_EPNUM); 626 epdir = get_bit(hcchar, HCCHAR_EPDIR); 627 eptype = get_field(hcchar, HCCHAR_EPTYPE); 628 pid = get_field(hctsiz, TSIZ_SC_MC_PID); 629 len = get_field(hctsiz, TSIZ_XFERSIZE); 630 631 dev = dwc2_find_device(s, devadr); 632 633 trace_usb_dwc2_enable_chan(index >> 3, dev, &p->packet, epnum); 634 if (dev == NULL) { 635 return; 636 } 637 638 if (eptype == USB_ENDPOINT_XFER_CONTROL && pid == TSIZ_SC_MC_PID_SETUP) { 639 pid = USB_TOKEN_SETUP; 640 } else { 641 pid = epdir ? USB_TOKEN_IN : USB_TOKEN_OUT; 642 } 643 644 ep = usb_ep_get(dev, pid, epnum); 645 646 /* 647 * Hack: Networking doesn't like us delivering large transfers, it kind 648 * of works but the latency is horrible. So if the transfer is <= the mtu 649 * size, we take that as a hint that this might be a network transfer, 650 * and do the transfer packet-by-packet. 651 */ 652 if (len > 1536) { 653 p->small = false; 654 } else { 655 p->small = true; 656 } 657 658 dwc2_handle_packet(s, devadr, dev, ep, index, true); 659 qemu_bh_schedule(s->async_bh); 660 } 661 662 static const char *glbregnm[] = { 663 "GOTGCTL ", "GOTGINT ", "GAHBCFG ", "GUSBCFG ", "GRSTCTL ", 664 "GINTSTS ", "GINTMSK ", "GRXSTSR ", "GRXSTSP ", "GRXFSIZ ", 665 "GNPTXFSIZ", "GNPTXSTS ", "GI2CCTL ", "GPVNDCTL ", "GGPIO ", 666 "GUID ", "GSNPSID ", "GHWCFG1 ", "GHWCFG2 ", "GHWCFG3 ", 667 "GHWCFG4 ", "GLPMCFG ", "GPWRDN ", "GDFIFOCFG", "GADPCTL ", 668 "GREFCLK ", "GINTMSK2 ", "GINTSTS2 " 669 }; 670 671 static uint64_t dwc2_glbreg_read(void *ptr, hwaddr addr, int index, 672 unsigned size) 673 { 674 DWC2State *s = ptr; 675 uint32_t val; 676 677 if (addr > GINTSTS2) { 678 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 679 __func__, addr); 680 return 0; 681 } 682 683 val = s->glbreg[index]; 684 685 switch (addr) { 686 case GRSTCTL: 687 /* clear any self-clearing bits that were set */ 688 val &= ~(GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH | GRSTCTL_IN_TKNQ_FLSH | 689 GRSTCTL_FRMCNTRRST | GRSTCTL_HSFTRST | GRSTCTL_CSFTRST); 690 s->glbreg[index] = val; 691 break; 692 default: 693 break; 694 } 695 696 trace_usb_dwc2_glbreg_read(addr, glbregnm[index], val); 697 return val; 698 } 699 700 static void dwc2_glbreg_write(void *ptr, hwaddr addr, int index, uint64_t val, 701 unsigned size) 702 { 703 DWC2State *s = ptr; 704 uint64_t orig = val; 705 uint32_t *mmio; 706 uint32_t old; 707 int iflg = 0; 708 709 if (addr > GINTSTS2) { 710 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 711 __func__, addr); 712 return; 713 } 714 715 mmio = &s->glbreg[index]; 716 old = *mmio; 717 718 switch (addr) { 719 case GOTGCTL: 720 /* don't allow setting of read-only bits */ 721 val &= ~(GOTGCTL_MULT_VALID_BC_MASK | GOTGCTL_BSESVLD | 722 GOTGCTL_ASESVLD | GOTGCTL_DBNC_SHORT | GOTGCTL_CONID_B | 723 GOTGCTL_HSTNEGSCS | GOTGCTL_SESREQSCS); 724 /* don't allow clearing of read-only bits */ 725 val |= old & (GOTGCTL_MULT_VALID_BC_MASK | GOTGCTL_BSESVLD | 726 GOTGCTL_ASESVLD | GOTGCTL_DBNC_SHORT | GOTGCTL_CONID_B | 727 GOTGCTL_HSTNEGSCS | GOTGCTL_SESREQSCS); 728 break; 729 case GAHBCFG: 730 if ((val & GAHBCFG_GLBL_INTR_EN) && !(old & GAHBCFG_GLBL_INTR_EN)) { 731 iflg = 1; 732 } 733 break; 734 case GRSTCTL: 735 val |= GRSTCTL_AHBIDLE; 736 val &= ~GRSTCTL_DMAREQ; 737 if (!(old & GRSTCTL_TXFFLSH) && (val & GRSTCTL_TXFFLSH)) { 738 /* TODO - TX fifo flush */ 739 qemu_log_mask(LOG_UNIMP, "%s: Tx FIFO flush not implemented\n", 740 __func__); 741 } 742 if (!(old & GRSTCTL_RXFFLSH) && (val & GRSTCTL_RXFFLSH)) { 743 /* TODO - RX fifo flush */ 744 qemu_log_mask(LOG_UNIMP, "%s: Rx FIFO flush not implemented\n", 745 __func__); 746 } 747 if (!(old & GRSTCTL_IN_TKNQ_FLSH) && (val & GRSTCTL_IN_TKNQ_FLSH)) { 748 /* TODO - device IN token queue flush */ 749 qemu_log_mask(LOG_UNIMP, "%s: Token queue flush not implemented\n", 750 __func__); 751 } 752 if (!(old & GRSTCTL_FRMCNTRRST) && (val & GRSTCTL_FRMCNTRRST)) { 753 /* TODO - host frame counter reset */ 754 qemu_log_mask(LOG_UNIMP, 755 "%s: Frame counter reset not implemented\n", 756 __func__); 757 } 758 if (!(old & GRSTCTL_HSFTRST) && (val & GRSTCTL_HSFTRST)) { 759 /* TODO - host soft reset */ 760 qemu_log_mask(LOG_UNIMP, "%s: Host soft reset not implemented\n", 761 __func__); 762 } 763 if (!(old & GRSTCTL_CSFTRST) && (val & GRSTCTL_CSFTRST)) { 764 /* TODO - core soft reset */ 765 qemu_log_mask(LOG_UNIMP, "%s: Core soft reset not implemented\n", 766 __func__); 767 } 768 /* don't allow clearing of self-clearing bits */ 769 val |= old & (GRSTCTL_TXFFLSH | GRSTCTL_RXFFLSH | 770 GRSTCTL_IN_TKNQ_FLSH | GRSTCTL_FRMCNTRRST | 771 GRSTCTL_HSFTRST | GRSTCTL_CSFTRST); 772 break; 773 case GINTSTS: 774 /* clear the write-1-to-clear bits */ 775 val |= ~old; 776 val = ~val; 777 /* don't allow clearing of read-only bits */ 778 val |= old & (GINTSTS_PTXFEMP | GINTSTS_HCHINT | GINTSTS_PRTINT | 779 GINTSTS_OEPINT | GINTSTS_IEPINT | GINTSTS_GOUTNAKEFF | 780 GINTSTS_GINNAKEFF | GINTSTS_NPTXFEMP | GINTSTS_RXFLVL | 781 GINTSTS_OTGINT | GINTSTS_CURMODE_HOST); 782 iflg = 1; 783 break; 784 case GINTMSK: 785 iflg = 1; 786 break; 787 default: 788 break; 789 } 790 791 trace_usb_dwc2_glbreg_write(addr, glbregnm[index], orig, old, val); 792 *mmio = val; 793 794 if (iflg) { 795 dwc2_update_irq(s); 796 } 797 } 798 799 static uint64_t dwc2_fszreg_read(void *ptr, hwaddr addr, int index, 800 unsigned size) 801 { 802 DWC2State *s = ptr; 803 uint32_t val; 804 805 if (addr != HPTXFSIZ) { 806 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 807 __func__, addr); 808 return 0; 809 } 810 811 val = s->fszreg[index]; 812 813 trace_usb_dwc2_fszreg_read(addr, val); 814 return val; 815 } 816 817 static void dwc2_fszreg_write(void *ptr, hwaddr addr, int index, uint64_t val, 818 unsigned size) 819 { 820 DWC2State *s = ptr; 821 uint64_t orig = val; 822 uint32_t *mmio; 823 uint32_t old; 824 825 if (addr != HPTXFSIZ) { 826 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 827 __func__, addr); 828 return; 829 } 830 831 mmio = &s->fszreg[index]; 832 old = *mmio; 833 834 trace_usb_dwc2_fszreg_write(addr, orig, old, val); 835 *mmio = val; 836 } 837 838 static const char *hreg0nm[] = { 839 "HCFG ", "HFIR ", "HFNUM ", "<rsvd> ", "HPTXSTS ", 840 "HAINT ", "HAINTMSK ", "HFLBADDR ", "<rsvd> ", "<rsvd> ", 841 "<rsvd> ", "<rsvd> ", "<rsvd> ", "<rsvd> ", "<rsvd> ", 842 "<rsvd> ", "HPRT0 " 843 }; 844 845 static uint64_t dwc2_hreg0_read(void *ptr, hwaddr addr, int index, 846 unsigned size) 847 { 848 DWC2State *s = ptr; 849 uint32_t val; 850 851 if (addr < HCFG || addr > HPRT0) { 852 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 853 __func__, addr); 854 return 0; 855 } 856 857 val = s->hreg0[index]; 858 859 switch (addr) { 860 case HFNUM: 861 val = (dwc2_get_frame_remaining(s) << HFNUM_FRREM_SHIFT) | 862 (s->hfnum << HFNUM_FRNUM_SHIFT); 863 break; 864 default: 865 break; 866 } 867 868 trace_usb_dwc2_hreg0_read(addr, hreg0nm[index], val); 869 return val; 870 } 871 872 static void dwc2_hreg0_write(void *ptr, hwaddr addr, int index, uint64_t val, 873 unsigned size) 874 { 875 DWC2State *s = ptr; 876 USBDevice *dev = s->uport.dev; 877 uint64_t orig = val; 878 uint32_t *mmio; 879 uint32_t tval, told, old; 880 int prst = 0; 881 int iflg = 0; 882 883 if (addr < HCFG || addr > HPRT0) { 884 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 885 __func__, addr); 886 return; 887 } 888 889 mmio = &s->hreg0[index]; 890 old = *mmio; 891 892 switch (addr) { 893 case HFIR: 894 break; 895 case HFNUM: 896 case HPTXSTS: 897 case HAINT: 898 qemu_log_mask(LOG_GUEST_ERROR, "%s: write to read-only register\n", 899 __func__); 900 return; 901 case HAINTMSK: 902 val &= 0xffff; 903 break; 904 case HPRT0: 905 /* don't allow clearing of read-only bits */ 906 val |= old & (HPRT0_SPD_MASK | HPRT0_LNSTS_MASK | HPRT0_OVRCURRACT | 907 HPRT0_CONNSTS); 908 /* don't allow clearing of self-clearing bits */ 909 val |= old & (HPRT0_SUSP | HPRT0_RES); 910 /* don't allow setting of self-setting bits */ 911 if (!(old & HPRT0_ENA) && (val & HPRT0_ENA)) { 912 val &= ~HPRT0_ENA; 913 } 914 /* clear the write-1-to-clear bits */ 915 tval = val & (HPRT0_OVRCURRCHG | HPRT0_ENACHG | HPRT0_ENA | 916 HPRT0_CONNDET); 917 told = old & (HPRT0_OVRCURRCHG | HPRT0_ENACHG | HPRT0_ENA | 918 HPRT0_CONNDET); 919 tval |= ~told; 920 tval = ~tval; 921 tval &= (HPRT0_OVRCURRCHG | HPRT0_ENACHG | HPRT0_ENA | 922 HPRT0_CONNDET); 923 val &= ~(HPRT0_OVRCURRCHG | HPRT0_ENACHG | HPRT0_ENA | 924 HPRT0_CONNDET); 925 val |= tval; 926 if (!(val & HPRT0_RST) && (old & HPRT0_RST)) { 927 if (dev && dev->attached) { 928 val |= HPRT0_ENA | HPRT0_ENACHG; 929 prst = 1; 930 } 931 } 932 if (val & (HPRT0_OVRCURRCHG | HPRT0_ENACHG | HPRT0_CONNDET)) { 933 iflg = 1; 934 } else { 935 iflg = -1; 936 } 937 break; 938 default: 939 break; 940 } 941 942 if (prst) { 943 trace_usb_dwc2_hreg0_write(addr, hreg0nm[index], orig, old, 944 val & ~HPRT0_CONNDET); 945 trace_usb_dwc2_hreg0_action("call usb_port_reset"); 946 usb_port_reset(&s->uport); 947 val &= ~HPRT0_CONNDET; 948 } else { 949 trace_usb_dwc2_hreg0_write(addr, hreg0nm[index], orig, old, val); 950 } 951 952 *mmio = val; 953 954 if (iflg > 0) { 955 trace_usb_dwc2_hreg0_action("enable PRTINT"); 956 dwc2_raise_global_irq(s, GINTSTS_PRTINT); 957 } else if (iflg < 0) { 958 trace_usb_dwc2_hreg0_action("disable PRTINT"); 959 dwc2_lower_global_irq(s, GINTSTS_PRTINT); 960 } 961 } 962 963 static const char *hreg1nm[] = { 964 "HCCHAR ", "HCSPLT ", "HCINT ", "HCINTMSK", "HCTSIZ ", "HCDMA ", 965 "<rsvd> ", "HCDMAB " 966 }; 967 968 static uint64_t dwc2_hreg1_read(void *ptr, hwaddr addr, int index, 969 unsigned size) 970 { 971 DWC2State *s = ptr; 972 uint32_t val; 973 974 if (addr < HCCHAR(0) || addr > HCDMAB(DWC2_NB_CHAN - 1)) { 975 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 976 __func__, addr); 977 return 0; 978 } 979 980 val = s->hreg1[index]; 981 982 trace_usb_dwc2_hreg1_read(addr, hreg1nm[index & 7], addr >> 5, val); 983 return val; 984 } 985 986 static void dwc2_hreg1_write(void *ptr, hwaddr addr, int index, uint64_t val, 987 unsigned size) 988 { 989 DWC2State *s = ptr; 990 uint64_t orig = val; 991 uint32_t *mmio; 992 uint32_t old; 993 int iflg = 0; 994 int enflg = 0; 995 int disflg = 0; 996 997 if (addr < HCCHAR(0) || addr > HCDMAB(DWC2_NB_CHAN - 1)) { 998 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 999 __func__, addr); 1000 return; 1001 } 1002 1003 mmio = &s->hreg1[index]; 1004 old = *mmio; 1005 1006 switch (HSOTG_REG(0x500) + (addr & 0x1c)) { 1007 case HCCHAR(0): 1008 if ((val & HCCHAR_CHDIS) && !(old & HCCHAR_CHDIS)) { 1009 val &= ~(HCCHAR_CHENA | HCCHAR_CHDIS); 1010 disflg = 1; 1011 } else { 1012 val |= old & HCCHAR_CHDIS; 1013 if ((val & HCCHAR_CHENA) && !(old & HCCHAR_CHENA)) { 1014 val &= ~HCCHAR_CHDIS; 1015 enflg = 1; 1016 } else { 1017 val |= old & HCCHAR_CHENA; 1018 } 1019 } 1020 break; 1021 case HCINT(0): 1022 /* clear the write-1-to-clear bits */ 1023 val |= ~old; 1024 val = ~val; 1025 val &= ~HCINTMSK_RESERVED14_31; 1026 iflg = 1; 1027 break; 1028 case HCINTMSK(0): 1029 val &= ~HCINTMSK_RESERVED14_31; 1030 iflg = 1; 1031 break; 1032 case HCDMAB(0): 1033 qemu_log_mask(LOG_GUEST_ERROR, "%s: write to read-only register\n", 1034 __func__); 1035 return; 1036 default: 1037 break; 1038 } 1039 1040 trace_usb_dwc2_hreg1_write(addr, hreg1nm[index & 7], index >> 3, orig, 1041 old, val); 1042 *mmio = val; 1043 1044 if (disflg) { 1045 /* set ChHltd in HCINT */ 1046 s->hreg1[(index & ~7) + 2] |= HCINTMSK_CHHLTD; 1047 iflg = 1; 1048 } 1049 1050 if (enflg) { 1051 dwc2_enable_chan(s, index & ~7); 1052 } 1053 1054 if (iflg) { 1055 dwc2_update_hc_irq(s, index & ~7); 1056 } 1057 } 1058 1059 static const char *pcgregnm[] = { 1060 "PCGCTL ", "PCGCCTL1 " 1061 }; 1062 1063 static uint64_t dwc2_pcgreg_read(void *ptr, hwaddr addr, int index, 1064 unsigned size) 1065 { 1066 DWC2State *s = ptr; 1067 uint32_t val; 1068 1069 if (addr < PCGCTL || addr > PCGCCTL1) { 1070 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 1071 __func__, addr); 1072 return 0; 1073 } 1074 1075 val = s->pcgreg[index]; 1076 1077 trace_usb_dwc2_pcgreg_read(addr, pcgregnm[index], val); 1078 return val; 1079 } 1080 1081 static void dwc2_pcgreg_write(void *ptr, hwaddr addr, int index, 1082 uint64_t val, unsigned size) 1083 { 1084 DWC2State *s = ptr; 1085 uint64_t orig = val; 1086 uint32_t *mmio; 1087 uint32_t old; 1088 1089 if (addr < PCGCTL || addr > PCGCCTL1) { 1090 qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%"HWADDR_PRIx"\n", 1091 __func__, addr); 1092 return; 1093 } 1094 1095 mmio = &s->pcgreg[index]; 1096 old = *mmio; 1097 1098 trace_usb_dwc2_pcgreg_write(addr, pcgregnm[index], orig, old, val); 1099 *mmio = val; 1100 } 1101 1102 static uint64_t dwc2_hsotg_read(void *ptr, hwaddr addr, unsigned size) 1103 { 1104 uint64_t val; 1105 1106 switch (addr) { 1107 case HSOTG_REG(0x000) ... HSOTG_REG(0x0fc): 1108 val = dwc2_glbreg_read(ptr, addr, (addr - HSOTG_REG(0x000)) >> 2, size); 1109 break; 1110 case HSOTG_REG(0x100): 1111 val = dwc2_fszreg_read(ptr, addr, (addr - HSOTG_REG(0x100)) >> 2, size); 1112 break; 1113 case HSOTG_REG(0x104) ... HSOTG_REG(0x3fc): 1114 /* Gadget-mode registers, just return 0 for now */ 1115 val = 0; 1116 break; 1117 case HSOTG_REG(0x400) ... HSOTG_REG(0x4fc): 1118 val = dwc2_hreg0_read(ptr, addr, (addr - HSOTG_REG(0x400)) >> 2, size); 1119 break; 1120 case HSOTG_REG(0x500) ... HSOTG_REG(0x7fc): 1121 val = dwc2_hreg1_read(ptr, addr, (addr - HSOTG_REG(0x500)) >> 2, size); 1122 break; 1123 case HSOTG_REG(0x800) ... HSOTG_REG(0xdfc): 1124 /* Gadget-mode registers, just return 0 for now */ 1125 val = 0; 1126 break; 1127 case HSOTG_REG(0xe00) ... HSOTG_REG(0xffc): 1128 val = dwc2_pcgreg_read(ptr, addr, (addr - HSOTG_REG(0xe00)) >> 2, size); 1129 break; 1130 default: 1131 g_assert_not_reached(); 1132 } 1133 1134 return val; 1135 } 1136 1137 static void dwc2_hsotg_write(void *ptr, hwaddr addr, uint64_t val, 1138 unsigned size) 1139 { 1140 switch (addr) { 1141 case HSOTG_REG(0x000) ... HSOTG_REG(0x0fc): 1142 dwc2_glbreg_write(ptr, addr, (addr - HSOTG_REG(0x000)) >> 2, val, size); 1143 break; 1144 case HSOTG_REG(0x100): 1145 dwc2_fszreg_write(ptr, addr, (addr - HSOTG_REG(0x100)) >> 2, val, size); 1146 break; 1147 case HSOTG_REG(0x104) ... HSOTG_REG(0x3fc): 1148 /* Gadget-mode registers, do nothing for now */ 1149 break; 1150 case HSOTG_REG(0x400) ... HSOTG_REG(0x4fc): 1151 dwc2_hreg0_write(ptr, addr, (addr - HSOTG_REG(0x400)) >> 2, val, size); 1152 break; 1153 case HSOTG_REG(0x500) ... HSOTG_REG(0x7fc): 1154 dwc2_hreg1_write(ptr, addr, (addr - HSOTG_REG(0x500)) >> 2, val, size); 1155 break; 1156 case HSOTG_REG(0x800) ... HSOTG_REG(0xdfc): 1157 /* Gadget-mode registers, do nothing for now */ 1158 break; 1159 case HSOTG_REG(0xe00) ... HSOTG_REG(0xffc): 1160 dwc2_pcgreg_write(ptr, addr, (addr - HSOTG_REG(0xe00)) >> 2, val, size); 1161 break; 1162 default: 1163 g_assert_not_reached(); 1164 } 1165 } 1166 1167 static const MemoryRegionOps dwc2_mmio_hsotg_ops = { 1168 .read = dwc2_hsotg_read, 1169 .write = dwc2_hsotg_write, 1170 .impl.min_access_size = 4, 1171 .impl.max_access_size = 4, 1172 .endianness = DEVICE_LITTLE_ENDIAN, 1173 }; 1174 1175 static uint64_t dwc2_hreg2_read(void *ptr, hwaddr addr, unsigned size) 1176 { 1177 /* TODO - implement FIFOs to support slave mode */ 1178 trace_usb_dwc2_hreg2_read(addr, addr >> 12, 0); 1179 qemu_log_mask(LOG_UNIMP, "%s: FIFO read not implemented\n", __func__); 1180 return 0; 1181 } 1182 1183 static void dwc2_hreg2_write(void *ptr, hwaddr addr, uint64_t val, 1184 unsigned size) 1185 { 1186 uint64_t orig = val; 1187 1188 /* TODO - implement FIFOs to support slave mode */ 1189 trace_usb_dwc2_hreg2_write(addr, addr >> 12, orig, 0, val); 1190 qemu_log_mask(LOG_UNIMP, "%s: FIFO write not implemented\n", __func__); 1191 } 1192 1193 static const MemoryRegionOps dwc2_mmio_hreg2_ops = { 1194 .read = dwc2_hreg2_read, 1195 .write = dwc2_hreg2_write, 1196 .impl.min_access_size = 4, 1197 .impl.max_access_size = 4, 1198 .endianness = DEVICE_LITTLE_ENDIAN, 1199 }; 1200 1201 static void dwc2_wakeup_endpoint(USBBus *bus, USBEndpoint *ep, 1202 unsigned int stream) 1203 { 1204 DWC2State *s = container_of(bus, DWC2State, bus); 1205 1206 trace_usb_dwc2_wakeup_endpoint(ep, stream); 1207 1208 /* TODO - do something here? */ 1209 qemu_bh_schedule(s->async_bh); 1210 } 1211 1212 static USBBusOps dwc2_bus_ops = { 1213 .wakeup_endpoint = dwc2_wakeup_endpoint, 1214 }; 1215 1216 static void dwc2_work_timer(void *opaque) 1217 { 1218 DWC2State *s = opaque; 1219 1220 trace_usb_dwc2_work_timer(); 1221 qemu_bh_schedule(s->async_bh); 1222 } 1223 1224 static void dwc2_reset_enter(Object *obj, ResetType type) 1225 { 1226 DWC2Class *c = DWC2_USB_GET_CLASS(obj); 1227 DWC2State *s = DWC2_USB(obj); 1228 int i; 1229 1230 trace_usb_dwc2_reset_enter(); 1231 1232 if (c->parent_phases.enter) { 1233 c->parent_phases.enter(obj, type); 1234 } 1235 1236 timer_del(s->frame_timer); 1237 qemu_bh_cancel(s->async_bh); 1238 1239 if (s->uport.dev && s->uport.dev->attached) { 1240 usb_detach(&s->uport); 1241 } 1242 1243 dwc2_bus_stop(s); 1244 1245 s->gotgctl = GOTGCTL_BSESVLD | GOTGCTL_ASESVLD | GOTGCTL_CONID_B; 1246 s->gotgint = 0; 1247 s->gahbcfg = 0; 1248 s->gusbcfg = 5 << GUSBCFG_USBTRDTIM_SHIFT; 1249 s->grstctl = GRSTCTL_AHBIDLE; 1250 s->gintsts = GINTSTS_CONIDSTSCHNG | GINTSTS_PTXFEMP | GINTSTS_NPTXFEMP | 1251 GINTSTS_CURMODE_HOST; 1252 s->gintmsk = 0; 1253 s->grxstsr = 0; 1254 s->grxstsp = 0; 1255 s->grxfsiz = 1024; 1256 s->gnptxfsiz = 1024 << FIFOSIZE_DEPTH_SHIFT; 1257 s->gnptxsts = (4 << FIFOSIZE_DEPTH_SHIFT) | 1024; 1258 s->gi2cctl = GI2CCTL_I2CDATSE0 | GI2CCTL_ACK; 1259 s->gpvndctl = 0; 1260 s->ggpio = 0; 1261 s->guid = 0; 1262 s->gsnpsid = 0x4f54294a; 1263 s->ghwcfg1 = 0; 1264 s->ghwcfg2 = (8 << GHWCFG2_DEV_TOKEN_Q_DEPTH_SHIFT) | 1265 (4 << GHWCFG2_HOST_PERIO_TX_Q_DEPTH_SHIFT) | 1266 (4 << GHWCFG2_NONPERIO_TX_Q_DEPTH_SHIFT) | 1267 GHWCFG2_DYNAMIC_FIFO | 1268 GHWCFG2_PERIO_EP_SUPPORTED | 1269 ((DWC2_NB_CHAN - 1) << GHWCFG2_NUM_HOST_CHAN_SHIFT) | 1270 (GHWCFG2_INT_DMA_ARCH << GHWCFG2_ARCHITECTURE_SHIFT) | 1271 (GHWCFG2_OP_MODE_NO_SRP_CAPABLE_HOST << GHWCFG2_OP_MODE_SHIFT); 1272 s->ghwcfg3 = (4096 << GHWCFG3_DFIFO_DEPTH_SHIFT) | 1273 (4 << GHWCFG3_PACKET_SIZE_CNTR_WIDTH_SHIFT) | 1274 (4 << GHWCFG3_XFER_SIZE_CNTR_WIDTH_SHIFT); 1275 s->ghwcfg4 = 0; 1276 s->glpmcfg = 0; 1277 s->gpwrdn = GPWRDN_PWRDNRSTN; 1278 s->gdfifocfg = 0; 1279 s->gadpctl = 0; 1280 s->grefclk = 0; 1281 s->gintmsk2 = 0; 1282 s->gintsts2 = 0; 1283 1284 s->hptxfsiz = 500 << FIFOSIZE_DEPTH_SHIFT; 1285 1286 s->hcfg = 2 << HCFG_RESVALID_SHIFT; 1287 s->hfir = 60000; 1288 s->hfnum = 0x3fff; 1289 s->hptxsts = (16 << TXSTS_QSPCAVAIL_SHIFT) | 32768; 1290 s->haint = 0; 1291 s->haintmsk = 0; 1292 s->hprt0 = 0; 1293 1294 memset(s->hreg1, 0, sizeof(s->hreg1)); 1295 memset(s->pcgreg, 0, sizeof(s->pcgreg)); 1296 1297 s->sof_time = 0; 1298 s->frame_number = 0; 1299 s->fi = USB_FRMINTVL - 1; 1300 s->next_chan = 0; 1301 s->working = false; 1302 1303 for (i = 0; i < DWC2_NB_CHAN; i++) { 1304 s->packet[i].needs_service = false; 1305 } 1306 } 1307 1308 static void dwc2_reset_hold(Object *obj) 1309 { 1310 DWC2Class *c = DWC2_USB_GET_CLASS(obj); 1311 DWC2State *s = DWC2_USB(obj); 1312 1313 trace_usb_dwc2_reset_hold(); 1314 1315 if (c->parent_phases.hold) { 1316 c->parent_phases.hold(obj); 1317 } 1318 1319 dwc2_update_irq(s); 1320 } 1321 1322 static void dwc2_reset_exit(Object *obj) 1323 { 1324 DWC2Class *c = DWC2_USB_GET_CLASS(obj); 1325 DWC2State *s = DWC2_USB(obj); 1326 1327 trace_usb_dwc2_reset_exit(); 1328 1329 if (c->parent_phases.exit) { 1330 c->parent_phases.exit(obj); 1331 } 1332 1333 s->hprt0 = HPRT0_PWR; 1334 if (s->uport.dev && s->uport.dev->attached) { 1335 usb_attach(&s->uport); 1336 usb_device_reset(s->uport.dev); 1337 } 1338 } 1339 1340 static void dwc2_realize(DeviceState *dev, Error **errp) 1341 { 1342 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1343 DWC2State *s = DWC2_USB(dev); 1344 Object *obj; 1345 1346 obj = object_property_get_link(OBJECT(dev), "dma-mr", &error_abort); 1347 1348 s->dma_mr = MEMORY_REGION(obj); 1349 address_space_init(&s->dma_as, s->dma_mr, "dwc2"); 1350 1351 usb_bus_new(&s->bus, sizeof(s->bus), &dwc2_bus_ops, dev); 1352 usb_register_port(&s->bus, &s->uport, s, 0, &dwc2_port_ops, 1353 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL | 1354 (s->usb_version == 2 ? USB_SPEED_MASK_HIGH : 0)); 1355 s->uport.dev = 0; 1356 1357 s->usb_frame_time = NANOSECONDS_PER_SECOND / 1000; /* 1000000 */ 1358 if (NANOSECONDS_PER_SECOND >= USB_HZ_FS) { 1359 s->usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ_FS; /* 83.3 */ 1360 } else { 1361 s->usb_bit_time = 1; 1362 } 1363 1364 s->fi = USB_FRMINTVL - 1; 1365 s->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, dwc2_frame_boundary, s); 1366 s->frame_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, dwc2_work_timer, s); 1367 s->async_bh = qemu_bh_new(dwc2_work_bh, s); 1368 1369 sysbus_init_irq(sbd, &s->irq); 1370 } 1371 1372 static void dwc2_init(Object *obj) 1373 { 1374 SysBusDevice *sbd = SYS_BUS_DEVICE(obj); 1375 DWC2State *s = DWC2_USB(obj); 1376 1377 memory_region_init(&s->container, obj, "dwc2", DWC2_MMIO_SIZE); 1378 sysbus_init_mmio(sbd, &s->container); 1379 1380 memory_region_init_io(&s->hsotg, obj, &dwc2_mmio_hsotg_ops, s, 1381 "dwc2-io", 4 * KiB); 1382 memory_region_add_subregion(&s->container, 0x0000, &s->hsotg); 1383 1384 memory_region_init_io(&s->fifos, obj, &dwc2_mmio_hreg2_ops, s, 1385 "dwc2-fifo", 64 * KiB); 1386 memory_region_add_subregion(&s->container, 0x1000, &s->fifos); 1387 } 1388 1389 static const VMStateDescription vmstate_dwc2_state_packet = { 1390 .name = "dwc2/packet", 1391 .version_id = 1, 1392 .minimum_version_id = 1, 1393 .fields = (VMStateField[]) { 1394 VMSTATE_UINT32(devadr, DWC2Packet), 1395 VMSTATE_UINT32(epnum, DWC2Packet), 1396 VMSTATE_UINT32(epdir, DWC2Packet), 1397 VMSTATE_UINT32(mps, DWC2Packet), 1398 VMSTATE_UINT32(pid, DWC2Packet), 1399 VMSTATE_UINT32(index, DWC2Packet), 1400 VMSTATE_UINT32(pcnt, DWC2Packet), 1401 VMSTATE_UINT32(len, DWC2Packet), 1402 VMSTATE_INT32(async, DWC2Packet), 1403 VMSTATE_BOOL(small, DWC2Packet), 1404 VMSTATE_BOOL(needs_service, DWC2Packet), 1405 VMSTATE_END_OF_LIST() 1406 }, 1407 }; 1408 1409 const VMStateDescription vmstate_dwc2_state = { 1410 .name = "dwc2", 1411 .version_id = 1, 1412 .minimum_version_id = 1, 1413 .fields = (VMStateField[]) { 1414 VMSTATE_UINT32_ARRAY(glbreg, DWC2State, 1415 DWC2_GLBREG_SIZE / sizeof(uint32_t)), 1416 VMSTATE_UINT32_ARRAY(fszreg, DWC2State, 1417 DWC2_FSZREG_SIZE / sizeof(uint32_t)), 1418 VMSTATE_UINT32_ARRAY(hreg0, DWC2State, 1419 DWC2_HREG0_SIZE / sizeof(uint32_t)), 1420 VMSTATE_UINT32_ARRAY(hreg1, DWC2State, 1421 DWC2_HREG1_SIZE / sizeof(uint32_t)), 1422 VMSTATE_UINT32_ARRAY(pcgreg, DWC2State, 1423 DWC2_PCGREG_SIZE / sizeof(uint32_t)), 1424 1425 VMSTATE_TIMER_PTR(eof_timer, DWC2State), 1426 VMSTATE_TIMER_PTR(frame_timer, DWC2State), 1427 VMSTATE_INT64(sof_time, DWC2State), 1428 VMSTATE_INT64(usb_frame_time, DWC2State), 1429 VMSTATE_INT64(usb_bit_time, DWC2State), 1430 VMSTATE_UINT32(usb_version, DWC2State), 1431 VMSTATE_UINT16(frame_number, DWC2State), 1432 VMSTATE_UINT16(fi, DWC2State), 1433 VMSTATE_UINT16(next_chan, DWC2State), 1434 VMSTATE_BOOL(working, DWC2State), 1435 1436 VMSTATE_STRUCT_ARRAY(packet, DWC2State, DWC2_NB_CHAN, 1, 1437 vmstate_dwc2_state_packet, DWC2Packet), 1438 VMSTATE_UINT8_2DARRAY(usb_buf, DWC2State, DWC2_NB_CHAN, 1439 DWC2_MAX_XFER_SIZE), 1440 1441 VMSTATE_END_OF_LIST() 1442 } 1443 }; 1444 1445 static Property dwc2_usb_properties[] = { 1446 DEFINE_PROP_UINT32("usb_version", DWC2State, usb_version, 2), 1447 DEFINE_PROP_END_OF_LIST(), 1448 }; 1449 1450 static void dwc2_class_init(ObjectClass *klass, void *data) 1451 { 1452 DeviceClass *dc = DEVICE_CLASS(klass); 1453 DWC2Class *c = DWC2_USB_CLASS(klass); 1454 ResettableClass *rc = RESETTABLE_CLASS(klass); 1455 1456 dc->realize = dwc2_realize; 1457 dc->vmsd = &vmstate_dwc2_state; 1458 set_bit(DEVICE_CATEGORY_USB, dc->categories); 1459 device_class_set_props(dc, dwc2_usb_properties); 1460 resettable_class_set_parent_phases(rc, dwc2_reset_enter, dwc2_reset_hold, 1461 dwc2_reset_exit, &c->parent_phases); 1462 } 1463 1464 static const TypeInfo dwc2_usb_type_info = { 1465 .name = TYPE_DWC2_USB, 1466 .parent = TYPE_SYS_BUS_DEVICE, 1467 .instance_size = sizeof(DWC2State), 1468 .instance_init = dwc2_init, 1469 .class_size = sizeof(DWC2Class), 1470 .class_init = dwc2_class_init, 1471 }; 1472 1473 static void dwc2_usb_register_types(void) 1474 { 1475 type_register_static(&dwc2_usb_type_info); 1476 } 1477 1478 type_init(dwc2_usb_register_types) 1479