hcd-uhci.c (38313B)
1/* 2 * USB UHCI controller emulation 3 * 4 * Copyright (c) 2005 Fabrice Bellard 5 * 6 * Copyright (c) 2008 Max Krasnyansky 7 * Magor rewrite of the UHCI data structures parser and frame processor 8 * Support for fully async operation and multiple outstanding transactions 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a copy 11 * of this software and associated documentation files (the "Software"), to deal 12 * in the Software without restriction, including without limitation the rights 13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 * copies of the Software, and to permit persons to whom the Software is 15 * furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 * THE SOFTWARE. 27 */ 28 29#include "qemu/osdep.h" 30#include "hw/usb.h" 31#include "hw/usb/uhci-regs.h" 32#include "migration/vmstate.h" 33#include "hw/pci/pci.h" 34#include "hw/qdev-properties.h" 35#include "qapi/error.h" 36#include "qemu/timer.h" 37#include "qemu/iov.h" 38#include "sysemu/dma.h" 39#include "trace.h" 40#include "qemu/main-loop.h" 41#include "qemu/module.h" 42#include "qom/object.h" 43#include "hcd-uhci.h" 44 45#define FRAME_TIMER_FREQ 1000 46 47#define FRAME_MAX_LOOPS 256 48 49/* Must be large enough to handle 10 frame delay for initial isoc requests */ 50#define QH_VALID 32 51 52#define MAX_FRAMES_PER_TICK (QH_VALID / 2) 53 54enum { 55 TD_RESULT_STOP_FRAME = 10, 56 TD_RESULT_COMPLETE, 57 TD_RESULT_NEXT_QH, 58 TD_RESULT_ASYNC_START, 59 TD_RESULT_ASYNC_CONT, 60}; 61 62typedef struct UHCIState UHCIState; 63typedef struct UHCIAsync UHCIAsync; 64typedef struct UHCIPCIDeviceClass UHCIPCIDeviceClass; 65 66struct UHCIPCIDeviceClass { 67 PCIDeviceClass parent_class; 68 UHCIInfo info; 69}; 70 71/* 72 * Pending async transaction. 73 * 'packet' must be the first field because completion 74 * handler does "(UHCIAsync *) pkt" cast. 75 */ 76 77struct UHCIAsync { 78 USBPacket packet; 79 uint8_t static_buf[64]; /* 64 bytes is enough, except for isoc packets */ 80 uint8_t *buf; 81 UHCIQueue *queue; 82 QTAILQ_ENTRY(UHCIAsync) next; 83 uint32_t td_addr; 84 uint8_t done; 85}; 86 87struct UHCIQueue { 88 uint32_t qh_addr; 89 uint32_t token; 90 UHCIState *uhci; 91 USBEndpoint *ep; 92 QTAILQ_ENTRY(UHCIQueue) next; 93 QTAILQ_HEAD(, UHCIAsync) asyncs; 94 int8_t valid; 95}; 96 97typedef struct UHCI_TD { 98 uint32_t link; 99 uint32_t ctrl; /* see TD_CTRL_xxx */ 100 uint32_t token; 101 uint32_t buffer; 102} UHCI_TD; 103 104typedef struct UHCI_QH { 105 uint32_t link; 106 uint32_t el_link; 107} UHCI_QH; 108 109static void uhci_async_cancel(UHCIAsync *async); 110static void uhci_queue_fill(UHCIQueue *q, UHCI_TD *td); 111static void uhci_resume(void *opaque); 112 113static inline int32_t uhci_queue_token(UHCI_TD *td) 114{ 115 if ((td->token & (0xf << 15)) == 0) { 116 /* ctrl ep, cover ep and dev, not pid! */ 117 return td->token & 0x7ff00; 118 } else { 119 /* covers ep, dev, pid -> identifies the endpoint */ 120 return td->token & 0x7ffff; 121 } 122} 123 124static UHCIQueue *uhci_queue_new(UHCIState *s, uint32_t qh_addr, UHCI_TD *td, 125 USBEndpoint *ep) 126{ 127 UHCIQueue *queue; 128 129 queue = g_new0(UHCIQueue, 1); 130 queue->uhci = s; 131 queue->qh_addr = qh_addr; 132 queue->token = uhci_queue_token(td); 133 queue->ep = ep; 134 QTAILQ_INIT(&queue->asyncs); 135 QTAILQ_INSERT_HEAD(&s->queues, queue, next); 136 queue->valid = QH_VALID; 137 trace_usb_uhci_queue_add(queue->token); 138 return queue; 139} 140 141static void uhci_queue_free(UHCIQueue *queue, const char *reason) 142{ 143 UHCIState *s = queue->uhci; 144 UHCIAsync *async; 145 146 while (!QTAILQ_EMPTY(&queue->asyncs)) { 147 async = QTAILQ_FIRST(&queue->asyncs); 148 uhci_async_cancel(async); 149 } 150 usb_device_ep_stopped(queue->ep->dev, queue->ep); 151 152 trace_usb_uhci_queue_del(queue->token, reason); 153 QTAILQ_REMOVE(&s->queues, queue, next); 154 g_free(queue); 155} 156 157static UHCIQueue *uhci_queue_find(UHCIState *s, UHCI_TD *td) 158{ 159 uint32_t token = uhci_queue_token(td); 160 UHCIQueue *queue; 161 162 QTAILQ_FOREACH(queue, &s->queues, next) { 163 if (queue->token == token) { 164 return queue; 165 } 166 } 167 return NULL; 168} 169 170static bool uhci_queue_verify(UHCIQueue *queue, uint32_t qh_addr, UHCI_TD *td, 171 uint32_t td_addr, bool queuing) 172{ 173 UHCIAsync *first = QTAILQ_FIRST(&queue->asyncs); 174 uint32_t queue_token_addr = (queue->token >> 8) & 0x7f; 175 176 return queue->qh_addr == qh_addr && 177 queue->token == uhci_queue_token(td) && 178 queue_token_addr == queue->ep->dev->addr && 179 (queuing || !(td->ctrl & TD_CTRL_ACTIVE) || first == NULL || 180 first->td_addr == td_addr); 181} 182 183static UHCIAsync *uhci_async_alloc(UHCIQueue *queue, uint32_t td_addr) 184{ 185 UHCIAsync *async = g_new0(UHCIAsync, 1); 186 187 async->queue = queue; 188 async->td_addr = td_addr; 189 usb_packet_init(&async->packet); 190 trace_usb_uhci_packet_add(async->queue->token, async->td_addr); 191 192 return async; 193} 194 195static void uhci_async_free(UHCIAsync *async) 196{ 197 trace_usb_uhci_packet_del(async->queue->token, async->td_addr); 198 usb_packet_cleanup(&async->packet); 199 if (async->buf != async->static_buf) { 200 g_free(async->buf); 201 } 202 g_free(async); 203} 204 205static void uhci_async_link(UHCIAsync *async) 206{ 207 UHCIQueue *queue = async->queue; 208 QTAILQ_INSERT_TAIL(&queue->asyncs, async, next); 209 trace_usb_uhci_packet_link_async(async->queue->token, async->td_addr); 210} 211 212static void uhci_async_unlink(UHCIAsync *async) 213{ 214 UHCIQueue *queue = async->queue; 215 QTAILQ_REMOVE(&queue->asyncs, async, next); 216 trace_usb_uhci_packet_unlink_async(async->queue->token, async->td_addr); 217} 218 219static void uhci_async_cancel(UHCIAsync *async) 220{ 221 uhci_async_unlink(async); 222 trace_usb_uhci_packet_cancel(async->queue->token, async->td_addr, 223 async->done); 224 if (!async->done) 225 usb_cancel_packet(&async->packet); 226 uhci_async_free(async); 227} 228 229/* 230 * Mark all outstanding async packets as invalid. 231 * This is used for canceling them when TDs are removed by the HCD. 232 */ 233static void uhci_async_validate_begin(UHCIState *s) 234{ 235 UHCIQueue *queue; 236 237 QTAILQ_FOREACH(queue, &s->queues, next) { 238 queue->valid--; 239 } 240} 241 242/* 243 * Cancel async packets that are no longer valid 244 */ 245static void uhci_async_validate_end(UHCIState *s) 246{ 247 UHCIQueue *queue, *n; 248 249 QTAILQ_FOREACH_SAFE(queue, &s->queues, next, n) { 250 if (!queue->valid) { 251 uhci_queue_free(queue, "validate-end"); 252 } 253 } 254} 255 256static void uhci_async_cancel_device(UHCIState *s, USBDevice *dev) 257{ 258 UHCIQueue *queue, *n; 259 260 QTAILQ_FOREACH_SAFE(queue, &s->queues, next, n) { 261 if (queue->ep->dev == dev) { 262 uhci_queue_free(queue, "cancel-device"); 263 } 264 } 265} 266 267static void uhci_async_cancel_all(UHCIState *s) 268{ 269 UHCIQueue *queue, *nq; 270 271 QTAILQ_FOREACH_SAFE(queue, &s->queues, next, nq) { 272 uhci_queue_free(queue, "cancel-all"); 273 } 274} 275 276static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t td_addr) 277{ 278 UHCIQueue *queue; 279 UHCIAsync *async; 280 281 QTAILQ_FOREACH(queue, &s->queues, next) { 282 QTAILQ_FOREACH(async, &queue->asyncs, next) { 283 if (async->td_addr == td_addr) { 284 return async; 285 } 286 } 287 } 288 return NULL; 289} 290 291static void uhci_update_irq(UHCIState *s) 292{ 293 int level; 294 if (((s->status2 & 1) && (s->intr & (1 << 2))) || 295 ((s->status2 & 2) && (s->intr & (1 << 3))) || 296 ((s->status & UHCI_STS_USBERR) && (s->intr & (1 << 0))) || 297 ((s->status & UHCI_STS_RD) && (s->intr & (1 << 1))) || 298 (s->status & UHCI_STS_HSERR) || 299 (s->status & UHCI_STS_HCPERR)) { 300 level = 1; 301 } else { 302 level = 0; 303 } 304 pci_set_irq(&s->dev, level); 305} 306 307static void uhci_reset(DeviceState *dev) 308{ 309 PCIDevice *d = PCI_DEVICE(dev); 310 UHCIState *s = UHCI(d); 311 uint8_t *pci_conf; 312 int i; 313 UHCIPort *port; 314 315 trace_usb_uhci_reset(); 316 317 pci_conf = s->dev.config; 318 319 pci_conf[0x6a] = 0x01; /* usb clock */ 320 pci_conf[0x6b] = 0x00; 321 s->cmd = 0; 322 s->status = UHCI_STS_HCHALTED; 323 s->status2 = 0; 324 s->intr = 0; 325 s->fl_base_addr = 0; 326 s->sof_timing = 64; 327 328 for(i = 0; i < NB_PORTS; i++) { 329 port = &s->ports[i]; 330 port->ctrl = 0x0080; 331 if (port->port.dev && port->port.dev->attached) { 332 usb_port_reset(&port->port); 333 } 334 } 335 336 uhci_async_cancel_all(s); 337 qemu_bh_cancel(s->bh); 338 uhci_update_irq(s); 339} 340 341static const VMStateDescription vmstate_uhci_port = { 342 .name = "uhci port", 343 .version_id = 1, 344 .minimum_version_id = 1, 345 .fields = (VMStateField[]) { 346 VMSTATE_UINT16(ctrl, UHCIPort), 347 VMSTATE_END_OF_LIST() 348 } 349}; 350 351static int uhci_post_load(void *opaque, int version_id) 352{ 353 UHCIState *s = opaque; 354 355 if (version_id < 2) { 356 s->expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 357 (NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ); 358 } 359 return 0; 360} 361 362static const VMStateDescription vmstate_uhci = { 363 .name = "uhci", 364 .version_id = 3, 365 .minimum_version_id = 1, 366 .post_load = uhci_post_load, 367 .fields = (VMStateField[]) { 368 VMSTATE_PCI_DEVICE(dev, UHCIState), 369 VMSTATE_UINT8_EQUAL(num_ports_vmstate, UHCIState, NULL), 370 VMSTATE_STRUCT_ARRAY(ports, UHCIState, NB_PORTS, 1, 371 vmstate_uhci_port, UHCIPort), 372 VMSTATE_UINT16(cmd, UHCIState), 373 VMSTATE_UINT16(status, UHCIState), 374 VMSTATE_UINT16(intr, UHCIState), 375 VMSTATE_UINT16(frnum, UHCIState), 376 VMSTATE_UINT32(fl_base_addr, UHCIState), 377 VMSTATE_UINT8(sof_timing, UHCIState), 378 VMSTATE_UINT8(status2, UHCIState), 379 VMSTATE_TIMER_PTR(frame_timer, UHCIState), 380 VMSTATE_INT64_V(expire_time, UHCIState, 2), 381 VMSTATE_UINT32_V(pending_int_mask, UHCIState, 3), 382 VMSTATE_END_OF_LIST() 383 } 384}; 385 386static void uhci_port_write(void *opaque, hwaddr addr, 387 uint64_t val, unsigned size) 388{ 389 UHCIState *s = opaque; 390 391 trace_usb_uhci_mmio_writew(addr, val); 392 393 switch(addr) { 394 case 0x00: 395 if ((val & UHCI_CMD_RS) && !(s->cmd & UHCI_CMD_RS)) { 396 /* start frame processing */ 397 trace_usb_uhci_schedule_start(); 398 s->expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 399 (NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ); 400 timer_mod(s->frame_timer, s->expire_time); 401 s->status &= ~UHCI_STS_HCHALTED; 402 } else if (!(val & UHCI_CMD_RS)) { 403 s->status |= UHCI_STS_HCHALTED; 404 } 405 if (val & UHCI_CMD_GRESET) { 406 UHCIPort *port; 407 int i; 408 409 /* send reset on the USB bus */ 410 for(i = 0; i < NB_PORTS; i++) { 411 port = &s->ports[i]; 412 usb_device_reset(port->port.dev); 413 } 414 uhci_reset(DEVICE(s)); 415 return; 416 } 417 if (val & UHCI_CMD_HCRESET) { 418 uhci_reset(DEVICE(s)); 419 return; 420 } 421 s->cmd = val; 422 if (val & UHCI_CMD_EGSM) { 423 if ((s->ports[0].ctrl & UHCI_PORT_RD) || 424 (s->ports[1].ctrl & UHCI_PORT_RD)) { 425 uhci_resume(s); 426 } 427 } 428 break; 429 case 0x02: 430 s->status &= ~val; 431 /* XXX: the chip spec is not coherent, so we add a hidden 432 register to distinguish between IOC and SPD */ 433 if (val & UHCI_STS_USBINT) 434 s->status2 = 0; 435 uhci_update_irq(s); 436 break; 437 case 0x04: 438 s->intr = val; 439 uhci_update_irq(s); 440 break; 441 case 0x06: 442 if (s->status & UHCI_STS_HCHALTED) 443 s->frnum = val & 0x7ff; 444 break; 445 case 0x08: 446 s->fl_base_addr &= 0xffff0000; 447 s->fl_base_addr |= val & ~0xfff; 448 break; 449 case 0x0a: 450 s->fl_base_addr &= 0x0000ffff; 451 s->fl_base_addr |= (val << 16); 452 break; 453 case 0x0c: 454 s->sof_timing = val & 0xff; 455 break; 456 case 0x10 ... 0x1f: 457 { 458 UHCIPort *port; 459 USBDevice *dev; 460 int n; 461 462 n = (addr >> 1) & 7; 463 if (n >= NB_PORTS) 464 return; 465 port = &s->ports[n]; 466 dev = port->port.dev; 467 if (dev && dev->attached) { 468 /* port reset */ 469 if ( (val & UHCI_PORT_RESET) && 470 !(port->ctrl & UHCI_PORT_RESET) ) { 471 usb_device_reset(dev); 472 } 473 } 474 port->ctrl &= UHCI_PORT_READ_ONLY; 475 /* enabled may only be set if a device is connected */ 476 if (!(port->ctrl & UHCI_PORT_CCS)) { 477 val &= ~UHCI_PORT_EN; 478 } 479 port->ctrl |= (val & ~UHCI_PORT_READ_ONLY); 480 /* some bits are reset when a '1' is written to them */ 481 port->ctrl &= ~(val & UHCI_PORT_WRITE_CLEAR); 482 } 483 break; 484 } 485} 486 487static uint64_t uhci_port_read(void *opaque, hwaddr addr, unsigned size) 488{ 489 UHCIState *s = opaque; 490 uint32_t val; 491 492 switch(addr) { 493 case 0x00: 494 val = s->cmd; 495 break; 496 case 0x02: 497 val = s->status; 498 break; 499 case 0x04: 500 val = s->intr; 501 break; 502 case 0x06: 503 val = s->frnum; 504 break; 505 case 0x08: 506 val = s->fl_base_addr & 0xffff; 507 break; 508 case 0x0a: 509 val = (s->fl_base_addr >> 16) & 0xffff; 510 break; 511 case 0x0c: 512 val = s->sof_timing; 513 break; 514 case 0x10 ... 0x1f: 515 { 516 UHCIPort *port; 517 int n; 518 n = (addr >> 1) & 7; 519 if (n >= NB_PORTS) 520 goto read_default; 521 port = &s->ports[n]; 522 val = port->ctrl; 523 } 524 break; 525 default: 526 read_default: 527 val = 0xff7f; /* disabled port */ 528 break; 529 } 530 531 trace_usb_uhci_mmio_readw(addr, val); 532 533 return val; 534} 535 536/* signal resume if controller suspended */ 537static void uhci_resume (void *opaque) 538{ 539 UHCIState *s = (UHCIState *)opaque; 540 541 if (!s) 542 return; 543 544 if (s->cmd & UHCI_CMD_EGSM) { 545 s->cmd |= UHCI_CMD_FGR; 546 s->status |= UHCI_STS_RD; 547 uhci_update_irq(s); 548 } 549} 550 551static void uhci_attach(USBPort *port1) 552{ 553 UHCIState *s = port1->opaque; 554 UHCIPort *port = &s->ports[port1->index]; 555 556 /* set connect status */ 557 port->ctrl |= UHCI_PORT_CCS | UHCI_PORT_CSC; 558 559 /* update speed */ 560 if (port->port.dev->speed == USB_SPEED_LOW) { 561 port->ctrl |= UHCI_PORT_LSDA; 562 } else { 563 port->ctrl &= ~UHCI_PORT_LSDA; 564 } 565 566 uhci_resume(s); 567} 568 569static void uhci_detach(USBPort *port1) 570{ 571 UHCIState *s = port1->opaque; 572 UHCIPort *port = &s->ports[port1->index]; 573 574 uhci_async_cancel_device(s, port1->dev); 575 576 /* set connect status */ 577 if (port->ctrl & UHCI_PORT_CCS) { 578 port->ctrl &= ~UHCI_PORT_CCS; 579 port->ctrl |= UHCI_PORT_CSC; 580 } 581 /* disable port */ 582 if (port->ctrl & UHCI_PORT_EN) { 583 port->ctrl &= ~UHCI_PORT_EN; 584 port->ctrl |= UHCI_PORT_ENC; 585 } 586 587 uhci_resume(s); 588} 589 590static void uhci_child_detach(USBPort *port1, USBDevice *child) 591{ 592 UHCIState *s = port1->opaque; 593 594 uhci_async_cancel_device(s, child); 595} 596 597static void uhci_wakeup(USBPort *port1) 598{ 599 UHCIState *s = port1->opaque; 600 UHCIPort *port = &s->ports[port1->index]; 601 602 if (port->ctrl & UHCI_PORT_SUSPEND && !(port->ctrl & UHCI_PORT_RD)) { 603 port->ctrl |= UHCI_PORT_RD; 604 uhci_resume(s); 605 } 606} 607 608static USBDevice *uhci_find_device(UHCIState *s, uint8_t addr) 609{ 610 USBDevice *dev; 611 int i; 612 613 for (i = 0; i < NB_PORTS; i++) { 614 UHCIPort *port = &s->ports[i]; 615 if (!(port->ctrl & UHCI_PORT_EN)) { 616 continue; 617 } 618 dev = usb_find_device(&port->port, addr); 619 if (dev != NULL) { 620 return dev; 621 } 622 } 623 return NULL; 624} 625 626static void uhci_read_td(UHCIState *s, UHCI_TD *td, uint32_t link) 627{ 628 pci_dma_read(&s->dev, link & ~0xf, td, sizeof(*td)); 629 le32_to_cpus(&td->link); 630 le32_to_cpus(&td->ctrl); 631 le32_to_cpus(&td->token); 632 le32_to_cpus(&td->buffer); 633} 634 635static int uhci_handle_td_error(UHCIState *s, UHCI_TD *td, uint32_t td_addr, 636 int status, uint32_t *int_mask) 637{ 638 uint32_t queue_token = uhci_queue_token(td); 639 int ret; 640 641 switch (status) { 642 case USB_RET_NAK: 643 td->ctrl |= TD_CTRL_NAK; 644 return TD_RESULT_NEXT_QH; 645 646 case USB_RET_STALL: 647 td->ctrl |= TD_CTRL_STALL; 648 trace_usb_uhci_packet_complete_stall(queue_token, td_addr); 649 ret = TD_RESULT_NEXT_QH; 650 break; 651 652 case USB_RET_BABBLE: 653 td->ctrl |= TD_CTRL_BABBLE | TD_CTRL_STALL; 654 /* frame interrupted */ 655 trace_usb_uhci_packet_complete_babble(queue_token, td_addr); 656 ret = TD_RESULT_STOP_FRAME; 657 break; 658 659 case USB_RET_IOERROR: 660 case USB_RET_NODEV: 661 default: 662 td->ctrl |= TD_CTRL_TIMEOUT; 663 td->ctrl &= ~(3 << TD_CTRL_ERROR_SHIFT); 664 trace_usb_uhci_packet_complete_error(queue_token, td_addr); 665 ret = TD_RESULT_NEXT_QH; 666 break; 667 } 668 669 td->ctrl &= ~TD_CTRL_ACTIVE; 670 s->status |= UHCI_STS_USBERR; 671 if (td->ctrl & TD_CTRL_IOC) { 672 *int_mask |= 0x01; 673 } 674 uhci_update_irq(s); 675 return ret; 676} 677 678static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_t *int_mask) 679{ 680 int len = 0, max_len; 681 uint8_t pid; 682 683 max_len = ((td->token >> 21) + 1) & 0x7ff; 684 pid = td->token & 0xff; 685 686 if (td->ctrl & TD_CTRL_IOS) 687 td->ctrl &= ~TD_CTRL_ACTIVE; 688 689 if (async->packet.status != USB_RET_SUCCESS) { 690 return uhci_handle_td_error(s, td, async->td_addr, 691 async->packet.status, int_mask); 692 } 693 694 len = async->packet.actual_length; 695 td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff); 696 697 /* The NAK bit may have been set by a previous frame, so clear it 698 here. The docs are somewhat unclear, but win2k relies on this 699 behavior. */ 700 td->ctrl &= ~(TD_CTRL_ACTIVE | TD_CTRL_NAK); 701 if (td->ctrl & TD_CTRL_IOC) 702 *int_mask |= 0x01; 703 704 if (pid == USB_TOKEN_IN) { 705 pci_dma_write(&s->dev, td->buffer, async->buf, len); 706 if ((td->ctrl & TD_CTRL_SPD) && len < max_len) { 707 *int_mask |= 0x02; 708 /* short packet: do not update QH */ 709 trace_usb_uhci_packet_complete_shortxfer(async->queue->token, 710 async->td_addr); 711 return TD_RESULT_NEXT_QH; 712 } 713 } 714 715 /* success */ 716 trace_usb_uhci_packet_complete_success(async->queue->token, 717 async->td_addr); 718 return TD_RESULT_COMPLETE; 719} 720 721static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr, 722 UHCI_TD *td, uint32_t td_addr, uint32_t *int_mask) 723{ 724 int ret, max_len; 725 bool spd; 726 bool queuing = (q != NULL); 727 uint8_t pid = td->token & 0xff; 728 UHCIAsync *async; 729 730 async = uhci_async_find_td(s, td_addr); 731 if (async) { 732 if (uhci_queue_verify(async->queue, qh_addr, td, td_addr, queuing)) { 733 assert(q == NULL || q == async->queue); 734 q = async->queue; 735 } else { 736 uhci_queue_free(async->queue, "guest re-used pending td"); 737 async = NULL; 738 } 739 } 740 741 if (q == NULL) { 742 q = uhci_queue_find(s, td); 743 if (q && !uhci_queue_verify(q, qh_addr, td, td_addr, queuing)) { 744 uhci_queue_free(q, "guest re-used qh"); 745 q = NULL; 746 } 747 } 748 749 if (q) { 750 q->valid = QH_VALID; 751 } 752 753 /* Is active ? */ 754 if (!(td->ctrl & TD_CTRL_ACTIVE)) { 755 if (async) { 756 /* Guest marked a pending td non-active, cancel the queue */ 757 uhci_queue_free(async->queue, "pending td non-active"); 758 } 759 /* 760 * ehci11d spec page 22: "Even if the Active bit in the TD is already 761 * cleared when the TD is fetched ... an IOC interrupt is generated" 762 */ 763 if (td->ctrl & TD_CTRL_IOC) { 764 *int_mask |= 0x01; 765 } 766 return TD_RESULT_NEXT_QH; 767 } 768 769 switch (pid) { 770 case USB_TOKEN_OUT: 771 case USB_TOKEN_SETUP: 772 case USB_TOKEN_IN: 773 break; 774 default: 775 /* invalid pid : frame interrupted */ 776 s->status |= UHCI_STS_HCPERR; 777 s->cmd &= ~UHCI_CMD_RS; 778 uhci_update_irq(s); 779 return TD_RESULT_STOP_FRAME; 780 } 781 782 if (async) { 783 if (queuing) { 784 /* we are busy filling the queue, we are not prepared 785 to consume completed packages then, just leave them 786 in async state */ 787 return TD_RESULT_ASYNC_CONT; 788 } 789 if (!async->done) { 790 UHCI_TD last_td; 791 UHCIAsync *last = QTAILQ_LAST(&async->queue->asyncs); 792 /* 793 * While we are waiting for the current td to complete, the guest 794 * may have added more tds to the queue. Note we re-read the td 795 * rather then caching it, as we want to see guest made changes! 796 */ 797 uhci_read_td(s, &last_td, last->td_addr); 798 uhci_queue_fill(async->queue, &last_td); 799 800 return TD_RESULT_ASYNC_CONT; 801 } 802 uhci_async_unlink(async); 803 goto done; 804 } 805 806 if (s->completions_only) { 807 return TD_RESULT_ASYNC_CONT; 808 } 809 810 /* Allocate new packet */ 811 if (q == NULL) { 812 USBDevice *dev; 813 USBEndpoint *ep; 814 815 dev = uhci_find_device(s, (td->token >> 8) & 0x7f); 816 if (dev == NULL) { 817 return uhci_handle_td_error(s, td, td_addr, USB_RET_NODEV, 818 int_mask); 819 } 820 ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf); 821 q = uhci_queue_new(s, qh_addr, td, ep); 822 } 823 async = uhci_async_alloc(q, td_addr); 824 825 max_len = ((td->token >> 21) + 1) & 0x7ff; 826 spd = (pid == USB_TOKEN_IN && (td->ctrl & TD_CTRL_SPD) != 0); 827 usb_packet_setup(&async->packet, pid, q->ep, 0, td_addr, spd, 828 (td->ctrl & TD_CTRL_IOC) != 0); 829 if (max_len <= sizeof(async->static_buf)) { 830 async->buf = async->static_buf; 831 } else { 832 async->buf = g_malloc(max_len); 833 } 834 usb_packet_addbuf(&async->packet, async->buf, max_len); 835 836 switch(pid) { 837 case USB_TOKEN_OUT: 838 case USB_TOKEN_SETUP: 839 pci_dma_read(&s->dev, td->buffer, async->buf, max_len); 840 usb_handle_packet(q->ep->dev, &async->packet); 841 if (async->packet.status == USB_RET_SUCCESS) { 842 async->packet.actual_length = max_len; 843 } 844 break; 845 846 case USB_TOKEN_IN: 847 usb_handle_packet(q->ep->dev, &async->packet); 848 break; 849 850 default: 851 abort(); /* Never to execute */ 852 } 853 854 if (async->packet.status == USB_RET_ASYNC) { 855 uhci_async_link(async); 856 if (!queuing) { 857 uhci_queue_fill(q, td); 858 } 859 return TD_RESULT_ASYNC_START; 860 } 861 862done: 863 ret = uhci_complete_td(s, td, async, int_mask); 864 uhci_async_free(async); 865 return ret; 866} 867 868static void uhci_async_complete(USBPort *port, USBPacket *packet) 869{ 870 UHCIAsync *async = container_of(packet, UHCIAsync, packet); 871 UHCIState *s = async->queue->uhci; 872 873 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) { 874 uhci_async_cancel(async); 875 return; 876 } 877 878 async->done = 1; 879 /* Force processing of this packet *now*, needed for migration */ 880 s->completions_only = true; 881 qemu_bh_schedule(s->bh); 882} 883 884static int is_valid(uint32_t link) 885{ 886 return (link & 1) == 0; 887} 888 889static int is_qh(uint32_t link) 890{ 891 return (link & 2) != 0; 892} 893 894static int depth_first(uint32_t link) 895{ 896 return (link & 4) != 0; 897} 898 899/* QH DB used for detecting QH loops */ 900#define UHCI_MAX_QUEUES 128 901typedef struct { 902 uint32_t addr[UHCI_MAX_QUEUES]; 903 int count; 904} QhDb; 905 906static void qhdb_reset(QhDb *db) 907{ 908 db->count = 0; 909} 910 911/* Add QH to DB. Returns 1 if already present or DB is full. */ 912static int qhdb_insert(QhDb *db, uint32_t addr) 913{ 914 int i; 915 for (i = 0; i < db->count; i++) 916 if (db->addr[i] == addr) 917 return 1; 918 919 if (db->count >= UHCI_MAX_QUEUES) 920 return 1; 921 922 db->addr[db->count++] = addr; 923 return 0; 924} 925 926static void uhci_queue_fill(UHCIQueue *q, UHCI_TD *td) 927{ 928 uint32_t int_mask = 0; 929 uint32_t plink = td->link; 930 UHCI_TD ptd; 931 int ret; 932 933 while (is_valid(plink)) { 934 uhci_read_td(q->uhci, &ptd, plink); 935 if (!(ptd.ctrl & TD_CTRL_ACTIVE)) { 936 break; 937 } 938 if (uhci_queue_token(&ptd) != q->token) { 939 break; 940 } 941 trace_usb_uhci_td_queue(plink & ~0xf, ptd.ctrl, ptd.token); 942 ret = uhci_handle_td(q->uhci, q, q->qh_addr, &ptd, plink, &int_mask); 943 if (ret == TD_RESULT_ASYNC_CONT) { 944 break; 945 } 946 assert(ret == TD_RESULT_ASYNC_START); 947 assert(int_mask == 0); 948 plink = ptd.link; 949 } 950 usb_device_flush_ep_queue(q->ep->dev, q->ep); 951} 952 953static void uhci_process_frame(UHCIState *s) 954{ 955 uint32_t frame_addr, link, old_td_ctrl, val, int_mask; 956 uint32_t curr_qh, td_count = 0; 957 int cnt, ret; 958 UHCI_TD td; 959 UHCI_QH qh; 960 QhDb qhdb; 961 962 frame_addr = s->fl_base_addr + ((s->frnum & 0x3ff) << 2); 963 964 pci_dma_read(&s->dev, frame_addr, &link, 4); 965 le32_to_cpus(&link); 966 967 int_mask = 0; 968 curr_qh = 0; 969 970 qhdb_reset(&qhdb); 971 972 for (cnt = FRAME_MAX_LOOPS; is_valid(link) && cnt; cnt--) { 973 if (!s->completions_only && s->frame_bytes >= s->frame_bandwidth) { 974 /* We've reached the usb 1.1 bandwidth, which is 975 1280 bytes/frame, stop processing */ 976 trace_usb_uhci_frame_stop_bandwidth(); 977 break; 978 } 979 if (is_qh(link)) { 980 /* QH */ 981 trace_usb_uhci_qh_load(link & ~0xf); 982 983 if (qhdb_insert(&qhdb, link)) { 984 /* 985 * We're going in circles. Which is not a bug because 986 * HCD is allowed to do that as part of the BW management. 987 * 988 * Stop processing here if no transaction has been done 989 * since we've been here last time. 990 */ 991 if (td_count == 0) { 992 trace_usb_uhci_frame_loop_stop_idle(); 993 break; 994 } else { 995 trace_usb_uhci_frame_loop_continue(); 996 td_count = 0; 997 qhdb_reset(&qhdb); 998 qhdb_insert(&qhdb, link); 999 } 1000 } 1001 1002 pci_dma_read(&s->dev, link & ~0xf, &qh, sizeof(qh)); 1003 le32_to_cpus(&qh.link); 1004 le32_to_cpus(&qh.el_link); 1005 1006 if (!is_valid(qh.el_link)) { 1007 /* QH w/o elements */ 1008 curr_qh = 0; 1009 link = qh.link; 1010 } else { 1011 /* QH with elements */ 1012 curr_qh = link; 1013 link = qh.el_link; 1014 } 1015 continue; 1016 } 1017 1018 /* TD */ 1019 uhci_read_td(s, &td, link); 1020 trace_usb_uhci_td_load(curr_qh & ~0xf, link & ~0xf, td.ctrl, td.token); 1021 1022 old_td_ctrl = td.ctrl; 1023 ret = uhci_handle_td(s, NULL, curr_qh, &td, link, &int_mask); 1024 if (old_td_ctrl != td.ctrl) { 1025 /* update the status bits of the TD */ 1026 val = cpu_to_le32(td.ctrl); 1027 pci_dma_write(&s->dev, (link & ~0xf) + 4, &val, sizeof(val)); 1028 } 1029 1030 switch (ret) { 1031 case TD_RESULT_STOP_FRAME: /* interrupted frame */ 1032 goto out; 1033 1034 case TD_RESULT_NEXT_QH: 1035 case TD_RESULT_ASYNC_CONT: 1036 trace_usb_uhci_td_nextqh(curr_qh & ~0xf, link & ~0xf); 1037 link = curr_qh ? qh.link : td.link; 1038 continue; 1039 1040 case TD_RESULT_ASYNC_START: 1041 trace_usb_uhci_td_async(curr_qh & ~0xf, link & ~0xf); 1042 link = curr_qh ? qh.link : td.link; 1043 continue; 1044 1045 case TD_RESULT_COMPLETE: 1046 trace_usb_uhci_td_complete(curr_qh & ~0xf, link & ~0xf); 1047 link = td.link; 1048 td_count++; 1049 s->frame_bytes += (td.ctrl & 0x7ff) + 1; 1050 1051 if (curr_qh) { 1052 /* update QH element link */ 1053 qh.el_link = link; 1054 val = cpu_to_le32(qh.el_link); 1055 pci_dma_write(&s->dev, (curr_qh & ~0xf) + 4, &val, sizeof(val)); 1056 1057 if (!depth_first(link)) { 1058 /* done with this QH */ 1059 curr_qh = 0; 1060 link = qh.link; 1061 } 1062 } 1063 break; 1064 1065 default: 1066 assert(!"unknown return code"); 1067 } 1068 1069 /* go to the next entry */ 1070 } 1071 1072out: 1073 s->pending_int_mask |= int_mask; 1074} 1075 1076static void uhci_bh(void *opaque) 1077{ 1078 UHCIState *s = opaque; 1079 uhci_process_frame(s); 1080} 1081 1082static void uhci_frame_timer(void *opaque) 1083{ 1084 UHCIState *s = opaque; 1085 uint64_t t_now, t_last_run; 1086 int i, frames; 1087 const uint64_t frame_t = NANOSECONDS_PER_SECOND / FRAME_TIMER_FREQ; 1088 1089 s->completions_only = false; 1090 qemu_bh_cancel(s->bh); 1091 1092 if (!(s->cmd & UHCI_CMD_RS)) { 1093 /* Full stop */ 1094 trace_usb_uhci_schedule_stop(); 1095 timer_del(s->frame_timer); 1096 uhci_async_cancel_all(s); 1097 /* set hchalted bit in status - UHCI11D 2.1.2 */ 1098 s->status |= UHCI_STS_HCHALTED; 1099 return; 1100 } 1101 1102 /* We still store expire_time in our state, for migration */ 1103 t_last_run = s->expire_time - frame_t; 1104 t_now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 1105 1106 /* Process up to MAX_FRAMES_PER_TICK frames */ 1107 frames = (t_now - t_last_run) / frame_t; 1108 if (frames > s->maxframes) { 1109 int skipped = frames - s->maxframes; 1110 s->expire_time += skipped * frame_t; 1111 s->frnum = (s->frnum + skipped) & 0x7ff; 1112 frames -= skipped; 1113 } 1114 if (frames > MAX_FRAMES_PER_TICK) { 1115 frames = MAX_FRAMES_PER_TICK; 1116 } 1117 1118 for (i = 0; i < frames; i++) { 1119 s->frame_bytes = 0; 1120 trace_usb_uhci_frame_start(s->frnum); 1121 uhci_async_validate_begin(s); 1122 uhci_process_frame(s); 1123 uhci_async_validate_end(s); 1124 /* The spec says frnum is the frame currently being processed, and 1125 * the guest must look at frnum - 1 on interrupt, so inc frnum now */ 1126 s->frnum = (s->frnum + 1) & 0x7ff; 1127 s->expire_time += frame_t; 1128 } 1129 1130 /* Complete the previous frame(s) */ 1131 if (s->pending_int_mask) { 1132 s->status2 |= s->pending_int_mask; 1133 s->status |= UHCI_STS_USBINT; 1134 uhci_update_irq(s); 1135 } 1136 s->pending_int_mask = 0; 1137 1138 timer_mod(s->frame_timer, t_now + frame_t); 1139} 1140 1141static const MemoryRegionOps uhci_ioport_ops = { 1142 .read = uhci_port_read, 1143 .write = uhci_port_write, 1144 .valid.min_access_size = 1, 1145 .valid.max_access_size = 4, 1146 .impl.min_access_size = 2, 1147 .impl.max_access_size = 2, 1148 .endianness = DEVICE_LITTLE_ENDIAN, 1149}; 1150 1151static USBPortOps uhci_port_ops = { 1152 .attach = uhci_attach, 1153 .detach = uhci_detach, 1154 .child_detach = uhci_child_detach, 1155 .wakeup = uhci_wakeup, 1156 .complete = uhci_async_complete, 1157}; 1158 1159static USBBusOps uhci_bus_ops = { 1160}; 1161 1162void usb_uhci_common_realize(PCIDevice *dev, Error **errp) 1163{ 1164 Error *err = NULL; 1165 PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); 1166 UHCIPCIDeviceClass *u = container_of(pc, UHCIPCIDeviceClass, parent_class); 1167 UHCIState *s = UHCI(dev); 1168 uint8_t *pci_conf = s->dev.config; 1169 int i; 1170 1171 pci_conf[PCI_CLASS_PROG] = 0x00; 1172 /* TODO: reset value should be 0. */ 1173 pci_conf[USB_SBRN] = USB_RELEASE_1; // release number 1174 1175 pci_config_set_interrupt_pin(pci_conf, u->info.irq_pin + 1); 1176 1177 if (s->masterbus) { 1178 USBPort *ports[NB_PORTS]; 1179 for(i = 0; i < NB_PORTS; i++) { 1180 ports[i] = &s->ports[i].port; 1181 } 1182 usb_register_companion(s->masterbus, ports, NB_PORTS, 1183 s->firstport, s, &uhci_port_ops, 1184 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL, 1185 &err); 1186 if (err) { 1187 error_propagate(errp, err); 1188 return; 1189 } 1190 } else { 1191 usb_bus_new(&s->bus, sizeof(s->bus), &uhci_bus_ops, DEVICE(dev)); 1192 for (i = 0; i < NB_PORTS; i++) { 1193 usb_register_port(&s->bus, &s->ports[i].port, s, i, &uhci_port_ops, 1194 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL); 1195 } 1196 } 1197 s->bh = qemu_bh_new(uhci_bh, s); 1198 s->frame_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, uhci_frame_timer, s); 1199 s->num_ports_vmstate = NB_PORTS; 1200 QTAILQ_INIT(&s->queues); 1201 1202 memory_region_init_io(&s->io_bar, OBJECT(s), &uhci_ioport_ops, s, 1203 "uhci", 0x20); 1204 1205 /* Use region 4 for consistency with real hardware. BSD guests seem 1206 to rely on this. */ 1207 pci_register_bar(&s->dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &s->io_bar); 1208} 1209 1210static void usb_uhci_exit(PCIDevice *dev) 1211{ 1212 UHCIState *s = UHCI(dev); 1213 1214 trace_usb_uhci_exit(); 1215 1216 if (s->frame_timer) { 1217 timer_free(s->frame_timer); 1218 s->frame_timer = NULL; 1219 } 1220 1221 if (s->bh) { 1222 qemu_bh_delete(s->bh); 1223 } 1224 1225 uhci_async_cancel_all(s); 1226 1227 if (!s->masterbus) { 1228 usb_bus_release(&s->bus); 1229 } 1230} 1231 1232static Property uhci_properties_companion[] = { 1233 DEFINE_PROP_STRING("masterbus", UHCIState, masterbus), 1234 DEFINE_PROP_UINT32("firstport", UHCIState, firstport, 0), 1235 DEFINE_PROP_UINT32("bandwidth", UHCIState, frame_bandwidth, 1280), 1236 DEFINE_PROP_UINT32("maxframes", UHCIState, maxframes, 128), 1237 DEFINE_PROP_END_OF_LIST(), 1238}; 1239static Property uhci_properties_standalone[] = { 1240 DEFINE_PROP_UINT32("bandwidth", UHCIState, frame_bandwidth, 1280), 1241 DEFINE_PROP_UINT32("maxframes", UHCIState, maxframes, 128), 1242 DEFINE_PROP_END_OF_LIST(), 1243}; 1244 1245static void uhci_class_init(ObjectClass *klass, void *data) 1246{ 1247 DeviceClass *dc = DEVICE_CLASS(klass); 1248 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1249 1250 k->class_id = PCI_CLASS_SERIAL_USB; 1251 dc->vmsd = &vmstate_uhci; 1252 dc->reset = uhci_reset; 1253 set_bit(DEVICE_CATEGORY_USB, dc->categories); 1254} 1255 1256static const TypeInfo uhci_pci_type_info = { 1257 .name = TYPE_UHCI, 1258 .parent = TYPE_PCI_DEVICE, 1259 .instance_size = sizeof(UHCIState), 1260 .class_size = sizeof(UHCIPCIDeviceClass), 1261 .abstract = true, 1262 .class_init = uhci_class_init, 1263 .interfaces = (InterfaceInfo[]) { 1264 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 1265 { }, 1266 }, 1267}; 1268 1269void uhci_data_class_init(ObjectClass *klass, void *data) 1270{ 1271 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); 1272 DeviceClass *dc = DEVICE_CLASS(klass); 1273 UHCIPCIDeviceClass *u = container_of(k, UHCIPCIDeviceClass, parent_class); 1274 UHCIInfo *info = data; 1275 1276 k->realize = info->realize ? info->realize : usb_uhci_common_realize; 1277 k->exit = info->unplug ? usb_uhci_exit : NULL; 1278 k->vendor_id = info->vendor_id; 1279 k->device_id = info->device_id; 1280 k->revision = info->revision; 1281 if (!info->unplug) { 1282 /* uhci controllers in companion setups can't be hotplugged */ 1283 dc->hotpluggable = false; 1284 device_class_set_props(dc, uhci_properties_companion); 1285 } else { 1286 device_class_set_props(dc, uhci_properties_standalone); 1287 } 1288 u->info = *info; 1289} 1290 1291static UHCIInfo uhci_info[] = { 1292 { 1293 .name = "piix3-usb-uhci", 1294 .vendor_id = PCI_VENDOR_ID_INTEL, 1295 .device_id = PCI_DEVICE_ID_INTEL_82371SB_2, 1296 .revision = 0x01, 1297 .irq_pin = 3, 1298 .unplug = true, 1299 },{ 1300 .name = "piix4-usb-uhci", 1301 .vendor_id = PCI_VENDOR_ID_INTEL, 1302 .device_id = PCI_DEVICE_ID_INTEL_82371AB_2, 1303 .revision = 0x01, 1304 .irq_pin = 3, 1305 .unplug = true, 1306 },{ 1307 .name = "ich9-usb-uhci1", /* 00:1d.0 */ 1308 .vendor_id = PCI_VENDOR_ID_INTEL, 1309 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI1, 1310 .revision = 0x03, 1311 .irq_pin = 0, 1312 .unplug = false, 1313 },{ 1314 .name = "ich9-usb-uhci2", /* 00:1d.1 */ 1315 .vendor_id = PCI_VENDOR_ID_INTEL, 1316 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI2, 1317 .revision = 0x03, 1318 .irq_pin = 1, 1319 .unplug = false, 1320 },{ 1321 .name = "ich9-usb-uhci3", /* 00:1d.2 */ 1322 .vendor_id = PCI_VENDOR_ID_INTEL, 1323 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI3, 1324 .revision = 0x03, 1325 .irq_pin = 2, 1326 .unplug = false, 1327 },{ 1328 .name = "ich9-usb-uhci4", /* 00:1a.0 */ 1329 .vendor_id = PCI_VENDOR_ID_INTEL, 1330 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI4, 1331 .revision = 0x03, 1332 .irq_pin = 0, 1333 .unplug = false, 1334 },{ 1335 .name = "ich9-usb-uhci5", /* 00:1a.1 */ 1336 .vendor_id = PCI_VENDOR_ID_INTEL, 1337 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI5, 1338 .revision = 0x03, 1339 .irq_pin = 1, 1340 .unplug = false, 1341 },{ 1342 .name = "ich9-usb-uhci6", /* 00:1a.2 */ 1343 .vendor_id = PCI_VENDOR_ID_INTEL, 1344 .device_id = PCI_DEVICE_ID_INTEL_82801I_UHCI6, 1345 .revision = 0x03, 1346 .irq_pin = 2, 1347 .unplug = false, 1348 } 1349}; 1350 1351static void uhci_register_types(void) 1352{ 1353 TypeInfo uhci_type_info = { 1354 .parent = TYPE_UHCI, 1355 .class_init = uhci_data_class_init, 1356 }; 1357 int i; 1358 1359 type_register_static(&uhci_pci_type_info); 1360 1361 for (i = 0; i < ARRAY_SIZE(uhci_info); i++) { 1362 uhci_type_info.name = uhci_info[i].name; 1363 uhci_type_info.class_data = uhci_info + i; 1364 type_register(&uhci_type_info); 1365 } 1366} 1367 1368type_init(uhci_register_types)