1 /* 2 * USB xHCI controller emulation 3 * 4 * Copyright (c) 2011 Securiforest 5 * Date: 2011-05-11 ; Author: Hector Martin <hector@marcansoft.com> 6 * Based on usb-ohci.c, emulates Renesas NEC USB 3.0 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 20 */ 21 22 #include "qemu/osdep.h" 23 #include "qemu/timer.h" 24 #include "qemu/module.h" 25 #include "qemu/queue.h" 26 #include "migration/vmstate.h" 27 #include "hw/qdev-properties.h" 28 #include "trace.h" 29 #include "qapi/error.h" 30 31 #include "hcd-xhci.h" 32 33 //#define DEBUG_XHCI 34 //#define DEBUG_DATA 35 36 #ifdef DEBUG_XHCI 37 #define DPRINTF(...) fprintf(stderr, __VA_ARGS__) 38 #else 39 #define DPRINTF(...) do {} while (0) 40 #endif 41 #define FIXME(_msg) do { fprintf(stderr, "FIXME %s:%d %s\n", \ 42 __func__, __LINE__, _msg); abort(); } while (0) 43 44 #define TRB_LINK_LIMIT 32 45 #define COMMAND_LIMIT 256 46 #define TRANSFER_LIMIT 256 47 48 #define LEN_CAP 0x40 49 #define LEN_OPER (0x400 + 0x10 * MAXPORTS) 50 #define LEN_RUNTIME ((MAXINTRS + 1) * 0x20) 51 #define LEN_DOORBELL ((MAXSLOTS + 1) * 0x20) 52 53 #define OFF_OPER LEN_CAP 54 #define OFF_RUNTIME 0x1000 55 #define OFF_DOORBELL 0x2000 56 /* must be power of 2 */ 57 #define LEN_REGS 0x4000 58 59 #if (OFF_OPER + LEN_OPER) > OFF_RUNTIME 60 #error Increase OFF_RUNTIME 61 #endif 62 #if (OFF_RUNTIME + LEN_RUNTIME) > OFF_DOORBELL 63 #error Increase OFF_DOORBELL 64 #endif 65 #if (OFF_DOORBELL + LEN_DOORBELL) > LEN_REGS 66 # error Increase LEN_REGS 67 #endif 68 69 /* bit definitions */ 70 #define USBCMD_RS (1<<0) 71 #define USBCMD_HCRST (1<<1) 72 #define USBCMD_INTE (1<<2) 73 #define USBCMD_HSEE (1<<3) 74 #define USBCMD_LHCRST (1<<7) 75 #define USBCMD_CSS (1<<8) 76 #define USBCMD_CRS (1<<9) 77 #define USBCMD_EWE (1<<10) 78 #define USBCMD_EU3S (1<<11) 79 80 #define USBSTS_HCH (1<<0) 81 #define USBSTS_HSE (1<<2) 82 #define USBSTS_EINT (1<<3) 83 #define USBSTS_PCD (1<<4) 84 #define USBSTS_SSS (1<<8) 85 #define USBSTS_RSS (1<<9) 86 #define USBSTS_SRE (1<<10) 87 #define USBSTS_CNR (1<<11) 88 #define USBSTS_HCE (1<<12) 89 90 91 #define PORTSC_CCS (1<<0) 92 #define PORTSC_PED (1<<1) 93 #define PORTSC_OCA (1<<3) 94 #define PORTSC_PR (1<<4) 95 #define PORTSC_PLS_SHIFT 5 96 #define PORTSC_PLS_MASK 0xf 97 #define PORTSC_PP (1<<9) 98 #define PORTSC_SPEED_SHIFT 10 99 #define PORTSC_SPEED_MASK 0xf 100 #define PORTSC_SPEED_FULL (1<<10) 101 #define PORTSC_SPEED_LOW (2<<10) 102 #define PORTSC_SPEED_HIGH (3<<10) 103 #define PORTSC_SPEED_SUPER (4<<10) 104 #define PORTSC_PIC_SHIFT 14 105 #define PORTSC_PIC_MASK 0x3 106 #define PORTSC_LWS (1<<16) 107 #define PORTSC_CSC (1<<17) 108 #define PORTSC_PEC (1<<18) 109 #define PORTSC_WRC (1<<19) 110 #define PORTSC_OCC (1<<20) 111 #define PORTSC_PRC (1<<21) 112 #define PORTSC_PLC (1<<22) 113 #define PORTSC_CEC (1<<23) 114 #define PORTSC_CAS (1<<24) 115 #define PORTSC_WCE (1<<25) 116 #define PORTSC_WDE (1<<26) 117 #define PORTSC_WOE (1<<27) 118 #define PORTSC_DR (1<<30) 119 #define PORTSC_WPR (1<<31) 120 121 #define CRCR_RCS (1<<0) 122 #define CRCR_CS (1<<1) 123 #define CRCR_CA (1<<2) 124 #define CRCR_CRR (1<<3) 125 126 #define IMAN_IP (1<<0) 127 #define IMAN_IE (1<<1) 128 129 #define ERDP_EHB (1<<3) 130 131 #define TRB_SIZE 16 132 typedef struct XHCITRB { 133 uint64_t parameter; 134 uint32_t status; 135 uint32_t control; 136 dma_addr_t addr; 137 bool ccs; 138 } XHCITRB; 139 140 enum { 141 PLS_U0 = 0, 142 PLS_U1 = 1, 143 PLS_U2 = 2, 144 PLS_U3 = 3, 145 PLS_DISABLED = 4, 146 PLS_RX_DETECT = 5, 147 PLS_INACTIVE = 6, 148 PLS_POLLING = 7, 149 PLS_RECOVERY = 8, 150 PLS_HOT_RESET = 9, 151 PLS_COMPILANCE_MODE = 10, 152 PLS_TEST_MODE = 11, 153 PLS_RESUME = 15, 154 }; 155 156 #define CR_LINK TR_LINK 157 158 #define TRB_C (1<<0) 159 #define TRB_TYPE_SHIFT 10 160 #define TRB_TYPE_MASK 0x3f 161 #define TRB_TYPE(t) (((t).control >> TRB_TYPE_SHIFT) & TRB_TYPE_MASK) 162 163 #define TRB_EV_ED (1<<2) 164 165 #define TRB_TR_ENT (1<<1) 166 #define TRB_TR_ISP (1<<2) 167 #define TRB_TR_NS (1<<3) 168 #define TRB_TR_CH (1<<4) 169 #define TRB_TR_IOC (1<<5) 170 #define TRB_TR_IDT (1<<6) 171 #define TRB_TR_TBC_SHIFT 7 172 #define TRB_TR_TBC_MASK 0x3 173 #define TRB_TR_BEI (1<<9) 174 #define TRB_TR_TLBPC_SHIFT 16 175 #define TRB_TR_TLBPC_MASK 0xf 176 #define TRB_TR_FRAMEID_SHIFT 20 177 #define TRB_TR_FRAMEID_MASK 0x7ff 178 #define TRB_TR_SIA (1<<31) 179 180 #define TRB_TR_DIR (1<<16) 181 182 #define TRB_CR_SLOTID_SHIFT 24 183 #define TRB_CR_SLOTID_MASK 0xff 184 #define TRB_CR_EPID_SHIFT 16 185 #define TRB_CR_EPID_MASK 0x1f 186 187 #define TRB_CR_BSR (1<<9) 188 #define TRB_CR_DC (1<<9) 189 190 #define TRB_LK_TC (1<<1) 191 192 #define TRB_INTR_SHIFT 22 193 #define TRB_INTR_MASK 0x3ff 194 #define TRB_INTR(t) (((t).status >> TRB_INTR_SHIFT) & TRB_INTR_MASK) 195 196 #define EP_TYPE_MASK 0x7 197 #define EP_TYPE_SHIFT 3 198 199 #define EP_STATE_MASK 0x7 200 #define EP_DISABLED (0<<0) 201 #define EP_RUNNING (1<<0) 202 #define EP_HALTED (2<<0) 203 #define EP_STOPPED (3<<0) 204 #define EP_ERROR (4<<0) 205 206 #define SLOT_STATE_MASK 0x1f 207 #define SLOT_STATE_SHIFT 27 208 #define SLOT_STATE(s) (((s)>>SLOT_STATE_SHIFT)&SLOT_STATE_MASK) 209 #define SLOT_ENABLED 0 210 #define SLOT_DEFAULT 1 211 #define SLOT_ADDRESSED 2 212 #define SLOT_CONFIGURED 3 213 214 #define SLOT_CONTEXT_ENTRIES_MASK 0x1f 215 #define SLOT_CONTEXT_ENTRIES_SHIFT 27 216 217 #define get_field(data, field) \ 218 (((data) >> field##_SHIFT) & field##_MASK) 219 220 #define set_field(data, newval, field) do { \ 221 uint32_t val = *data; \ 222 val &= ~(field##_MASK << field##_SHIFT); \ 223 val |= ((newval) & field##_MASK) << field##_SHIFT; \ 224 *data = val; \ 225 } while (0) 226 227 typedef enum EPType { 228 ET_INVALID = 0, 229 ET_ISO_OUT, 230 ET_BULK_OUT, 231 ET_INTR_OUT, 232 ET_CONTROL, 233 ET_ISO_IN, 234 ET_BULK_IN, 235 ET_INTR_IN, 236 } EPType; 237 238 typedef struct XHCITransfer { 239 XHCIEPContext *epctx; 240 USBPacket packet; 241 QEMUSGList sgl; 242 bool running_async; 243 bool running_retry; 244 bool complete; 245 bool int_req; 246 unsigned int iso_pkts; 247 unsigned int streamid; 248 bool in_xfer; 249 bool iso_xfer; 250 bool timed_xfer; 251 252 unsigned int trb_count; 253 XHCITRB *trbs; 254 255 TRBCCode status; 256 257 unsigned int pkts; 258 unsigned int pktsize; 259 unsigned int cur_pkt; 260 261 uint64_t mfindex_kick; 262 263 QTAILQ_ENTRY(XHCITransfer) next; 264 } XHCITransfer; 265 266 struct XHCIStreamContext { 267 dma_addr_t pctx; 268 unsigned int sct; 269 XHCIRing ring; 270 }; 271 272 struct XHCIEPContext { 273 XHCIState *xhci; 274 unsigned int slotid; 275 unsigned int epid; 276 277 XHCIRing ring; 278 uint32_t xfer_count; 279 QTAILQ_HEAD(, XHCITransfer) transfers; 280 XHCITransfer *retry; 281 EPType type; 282 dma_addr_t pctx; 283 unsigned int max_psize; 284 uint32_t state; 285 uint32_t kick_active; 286 287 /* streams */ 288 unsigned int max_pstreams; 289 bool lsa; 290 unsigned int nr_pstreams; 291 XHCIStreamContext *pstreams; 292 293 /* iso xfer scheduling */ 294 unsigned int interval; 295 int64_t mfindex_last; 296 QEMUTimer *kick_timer; 297 }; 298 299 typedef struct XHCIEvRingSeg { 300 uint32_t addr_low; 301 uint32_t addr_high; 302 uint32_t size; 303 uint32_t rsvd; 304 } XHCIEvRingSeg; 305 306 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, 307 unsigned int epid, unsigned int streamid); 308 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid); 309 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid, 310 unsigned int epid); 311 static void xhci_xfer_report(XHCITransfer *xfer); 312 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v); 313 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v); 314 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx); 315 316 static const char *TRBType_names[] = { 317 [TRB_RESERVED] = "TRB_RESERVED", 318 [TR_NORMAL] = "TR_NORMAL", 319 [TR_SETUP] = "TR_SETUP", 320 [TR_DATA] = "TR_DATA", 321 [TR_STATUS] = "TR_STATUS", 322 [TR_ISOCH] = "TR_ISOCH", 323 [TR_LINK] = "TR_LINK", 324 [TR_EVDATA] = "TR_EVDATA", 325 [TR_NOOP] = "TR_NOOP", 326 [CR_ENABLE_SLOT] = "CR_ENABLE_SLOT", 327 [CR_DISABLE_SLOT] = "CR_DISABLE_SLOT", 328 [CR_ADDRESS_DEVICE] = "CR_ADDRESS_DEVICE", 329 [CR_CONFIGURE_ENDPOINT] = "CR_CONFIGURE_ENDPOINT", 330 [CR_EVALUATE_CONTEXT] = "CR_EVALUATE_CONTEXT", 331 [CR_RESET_ENDPOINT] = "CR_RESET_ENDPOINT", 332 [CR_STOP_ENDPOINT] = "CR_STOP_ENDPOINT", 333 [CR_SET_TR_DEQUEUE] = "CR_SET_TR_DEQUEUE", 334 [CR_RESET_DEVICE] = "CR_RESET_DEVICE", 335 [CR_FORCE_EVENT] = "CR_FORCE_EVENT", 336 [CR_NEGOTIATE_BW] = "CR_NEGOTIATE_BW", 337 [CR_SET_LATENCY_TOLERANCE] = "CR_SET_LATENCY_TOLERANCE", 338 [CR_GET_PORT_BANDWIDTH] = "CR_GET_PORT_BANDWIDTH", 339 [CR_FORCE_HEADER] = "CR_FORCE_HEADER", 340 [CR_NOOP] = "CR_NOOP", 341 [ER_TRANSFER] = "ER_TRANSFER", 342 [ER_COMMAND_COMPLETE] = "ER_COMMAND_COMPLETE", 343 [ER_PORT_STATUS_CHANGE] = "ER_PORT_STATUS_CHANGE", 344 [ER_BANDWIDTH_REQUEST] = "ER_BANDWIDTH_REQUEST", 345 [ER_DOORBELL] = "ER_DOORBELL", 346 [ER_HOST_CONTROLLER] = "ER_HOST_CONTROLLER", 347 [ER_DEVICE_NOTIFICATION] = "ER_DEVICE_NOTIFICATION", 348 [ER_MFINDEX_WRAP] = "ER_MFINDEX_WRAP", 349 [CR_VENDOR_NEC_FIRMWARE_REVISION] = "CR_VENDOR_NEC_FIRMWARE_REVISION", 350 [CR_VENDOR_NEC_CHALLENGE_RESPONSE] = "CR_VENDOR_NEC_CHALLENGE_RESPONSE", 351 }; 352 353 static const char *TRBCCode_names[] = { 354 [CC_INVALID] = "CC_INVALID", 355 [CC_SUCCESS] = "CC_SUCCESS", 356 [CC_DATA_BUFFER_ERROR] = "CC_DATA_BUFFER_ERROR", 357 [CC_BABBLE_DETECTED] = "CC_BABBLE_DETECTED", 358 [CC_USB_TRANSACTION_ERROR] = "CC_USB_TRANSACTION_ERROR", 359 [CC_TRB_ERROR] = "CC_TRB_ERROR", 360 [CC_STALL_ERROR] = "CC_STALL_ERROR", 361 [CC_RESOURCE_ERROR] = "CC_RESOURCE_ERROR", 362 [CC_BANDWIDTH_ERROR] = "CC_BANDWIDTH_ERROR", 363 [CC_NO_SLOTS_ERROR] = "CC_NO_SLOTS_ERROR", 364 [CC_INVALID_STREAM_TYPE_ERROR] = "CC_INVALID_STREAM_TYPE_ERROR", 365 [CC_SLOT_NOT_ENABLED_ERROR] = "CC_SLOT_NOT_ENABLED_ERROR", 366 [CC_EP_NOT_ENABLED_ERROR] = "CC_EP_NOT_ENABLED_ERROR", 367 [CC_SHORT_PACKET] = "CC_SHORT_PACKET", 368 [CC_RING_UNDERRUN] = "CC_RING_UNDERRUN", 369 [CC_RING_OVERRUN] = "CC_RING_OVERRUN", 370 [CC_VF_ER_FULL] = "CC_VF_ER_FULL", 371 [CC_PARAMETER_ERROR] = "CC_PARAMETER_ERROR", 372 [CC_BANDWIDTH_OVERRUN] = "CC_BANDWIDTH_OVERRUN", 373 [CC_CONTEXT_STATE_ERROR] = "CC_CONTEXT_STATE_ERROR", 374 [CC_NO_PING_RESPONSE_ERROR] = "CC_NO_PING_RESPONSE_ERROR", 375 [CC_EVENT_RING_FULL_ERROR] = "CC_EVENT_RING_FULL_ERROR", 376 [CC_INCOMPATIBLE_DEVICE_ERROR] = "CC_INCOMPATIBLE_DEVICE_ERROR", 377 [CC_MISSED_SERVICE_ERROR] = "CC_MISSED_SERVICE_ERROR", 378 [CC_COMMAND_RING_STOPPED] = "CC_COMMAND_RING_STOPPED", 379 [CC_COMMAND_ABORTED] = "CC_COMMAND_ABORTED", 380 [CC_STOPPED] = "CC_STOPPED", 381 [CC_STOPPED_LENGTH_INVALID] = "CC_STOPPED_LENGTH_INVALID", 382 [CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR] 383 = "CC_MAX_EXIT_LATENCY_TOO_LARGE_ERROR", 384 [CC_ISOCH_BUFFER_OVERRUN] = "CC_ISOCH_BUFFER_OVERRUN", 385 [CC_EVENT_LOST_ERROR] = "CC_EVENT_LOST_ERROR", 386 [CC_UNDEFINED_ERROR] = "CC_UNDEFINED_ERROR", 387 [CC_INVALID_STREAM_ID_ERROR] = "CC_INVALID_STREAM_ID_ERROR", 388 [CC_SECONDARY_BANDWIDTH_ERROR] = "CC_SECONDARY_BANDWIDTH_ERROR", 389 [CC_SPLIT_TRANSACTION_ERROR] = "CC_SPLIT_TRANSACTION_ERROR", 390 }; 391 392 static const char *ep_state_names[] = { 393 [EP_DISABLED] = "disabled", 394 [EP_RUNNING] = "running", 395 [EP_HALTED] = "halted", 396 [EP_STOPPED] = "stopped", 397 [EP_ERROR] = "error", 398 }; 399 400 static const char *lookup_name(uint32_t index, const char **list, uint32_t llen) 401 { 402 if (index >= llen || list[index] == NULL) { 403 return "???"; 404 } 405 return list[index]; 406 } 407 408 static const char *trb_name(XHCITRB *trb) 409 { 410 return lookup_name(TRB_TYPE(*trb), TRBType_names, 411 ARRAY_SIZE(TRBType_names)); 412 } 413 414 static const char *event_name(XHCIEvent *event) 415 { 416 return lookup_name(event->ccode, TRBCCode_names, 417 ARRAY_SIZE(TRBCCode_names)); 418 } 419 420 static const char *ep_state_name(uint32_t state) 421 { 422 return lookup_name(state, ep_state_names, 423 ARRAY_SIZE(ep_state_names)); 424 } 425 426 bool xhci_get_flag(XHCIState *xhci, enum xhci_flags bit) 427 { 428 return xhci->flags & (1 << bit); 429 } 430 431 void xhci_set_flag(XHCIState *xhci, enum xhci_flags bit) 432 { 433 xhci->flags |= (1 << bit); 434 } 435 436 static uint64_t xhci_mfindex_get(XHCIState *xhci) 437 { 438 int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 439 return (now - xhci->mfindex_start) / 125000; 440 } 441 442 static void xhci_mfwrap_update(XHCIState *xhci) 443 { 444 const uint32_t bits = USBCMD_RS | USBCMD_EWE; 445 uint32_t mfindex, left; 446 int64_t now; 447 448 if ((xhci->usbcmd & bits) == bits) { 449 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 450 mfindex = ((now - xhci->mfindex_start) / 125000) & 0x3fff; 451 left = 0x4000 - mfindex; 452 timer_mod(xhci->mfwrap_timer, now + left * 125000); 453 } else { 454 timer_del(xhci->mfwrap_timer); 455 } 456 } 457 458 static void xhci_mfwrap_timer(void *opaque) 459 { 460 XHCIState *xhci = opaque; 461 XHCIEvent wrap = { ER_MFINDEX_WRAP, CC_SUCCESS }; 462 463 xhci_event(xhci, &wrap, 0); 464 xhci_mfwrap_update(xhci); 465 } 466 467 static inline dma_addr_t xhci_addr64(uint32_t low, uint32_t high) 468 { 469 if (sizeof(dma_addr_t) == 4) { 470 return low; 471 } else { 472 return low | (((dma_addr_t)high << 16) << 16); 473 } 474 } 475 476 static inline dma_addr_t xhci_mask64(uint64_t addr) 477 { 478 if (sizeof(dma_addr_t) == 4) { 479 return addr & 0xffffffff; 480 } else { 481 return addr; 482 } 483 } 484 485 static inline void xhci_dma_read_u32s(XHCIState *xhci, dma_addr_t addr, 486 uint32_t *buf, size_t len) 487 { 488 int i; 489 490 assert((len % sizeof(uint32_t)) == 0); 491 492 dma_memory_read(xhci->as, addr, buf, len); 493 494 for (i = 0; i < (len / sizeof(uint32_t)); i++) { 495 buf[i] = le32_to_cpu(buf[i]); 496 } 497 } 498 499 static inline void xhci_dma_write_u32s(XHCIState *xhci, dma_addr_t addr, 500 uint32_t *buf, size_t len) 501 { 502 int i; 503 uint32_t tmp[5]; 504 uint32_t n = len / sizeof(uint32_t); 505 506 assert((len % sizeof(uint32_t)) == 0); 507 assert(n <= ARRAY_SIZE(tmp)); 508 509 for (i = 0; i < n; i++) { 510 tmp[i] = cpu_to_le32(buf[i]); 511 } 512 dma_memory_write(xhci->as, addr, tmp, len); 513 } 514 515 static XHCIPort *xhci_lookup_port(XHCIState *xhci, struct USBPort *uport) 516 { 517 int index; 518 519 if (!uport->dev) { 520 return NULL; 521 } 522 switch (uport->dev->speed) { 523 case USB_SPEED_LOW: 524 case USB_SPEED_FULL: 525 case USB_SPEED_HIGH: 526 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 527 index = uport->index + xhci->numports_3; 528 } else { 529 index = uport->index; 530 } 531 break; 532 case USB_SPEED_SUPER: 533 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 534 index = uport->index; 535 } else { 536 index = uport->index + xhci->numports_2; 537 } 538 break; 539 default: 540 return NULL; 541 } 542 return &xhci->ports[index]; 543 } 544 545 static void xhci_intr_update(XHCIState *xhci, int v) 546 { 547 int level = 0; 548 549 if (v == 0) { 550 if (xhci->intr[0].iman & IMAN_IP && 551 xhci->intr[0].iman & IMAN_IE && 552 xhci->usbcmd & USBCMD_INTE) { 553 level = 1; 554 } 555 if (xhci->intr_raise) { 556 xhci->intr_raise(xhci, 0, level); 557 } 558 } 559 if (xhci->intr_update) { 560 xhci->intr_update(xhci, v, 561 xhci->intr[v].iman & IMAN_IE); 562 } 563 } 564 565 static void xhci_intr_raise(XHCIState *xhci, int v) 566 { 567 bool pending = (xhci->intr[v].erdp_low & ERDP_EHB); 568 569 xhci->intr[v].erdp_low |= ERDP_EHB; 570 xhci->intr[v].iman |= IMAN_IP; 571 xhci->usbsts |= USBSTS_EINT; 572 573 if (pending) { 574 return; 575 } 576 if (!(xhci->intr[v].iman & IMAN_IE)) { 577 return; 578 } 579 580 if (!(xhci->usbcmd & USBCMD_INTE)) { 581 return; 582 } 583 if (xhci->intr_raise) { 584 xhci->intr_raise(xhci, v, true); 585 } 586 } 587 588 static inline int xhci_running(XHCIState *xhci) 589 { 590 return !(xhci->usbsts & USBSTS_HCH); 591 } 592 593 static void xhci_die(XHCIState *xhci) 594 { 595 xhci->usbsts |= USBSTS_HCE; 596 DPRINTF("xhci: asserted controller error\n"); 597 } 598 599 static void xhci_write_event(XHCIState *xhci, XHCIEvent *event, int v) 600 { 601 XHCIInterrupter *intr = &xhci->intr[v]; 602 XHCITRB ev_trb; 603 dma_addr_t addr; 604 605 ev_trb.parameter = cpu_to_le64(event->ptr); 606 ev_trb.status = cpu_to_le32(event->length | (event->ccode << 24)); 607 ev_trb.control = (event->slotid << 24) | (event->epid << 16) | 608 event->flags | (event->type << TRB_TYPE_SHIFT); 609 if (intr->er_pcs) { 610 ev_trb.control |= TRB_C; 611 } 612 ev_trb.control = cpu_to_le32(ev_trb.control); 613 614 trace_usb_xhci_queue_event(v, intr->er_ep_idx, trb_name(&ev_trb), 615 event_name(event), ev_trb.parameter, 616 ev_trb.status, ev_trb.control); 617 618 addr = intr->er_start + TRB_SIZE*intr->er_ep_idx; 619 dma_memory_write(xhci->as, addr, &ev_trb, TRB_SIZE); 620 621 intr->er_ep_idx++; 622 if (intr->er_ep_idx >= intr->er_size) { 623 intr->er_ep_idx = 0; 624 intr->er_pcs = !intr->er_pcs; 625 } 626 } 627 628 static void xhci_event(XHCIState *xhci, XHCIEvent *event, int v) 629 { 630 XHCIInterrupter *intr; 631 dma_addr_t erdp; 632 unsigned int dp_idx; 633 634 if (v >= xhci->numintrs) { 635 DPRINTF("intr nr out of range (%d >= %d)\n", v, xhci->numintrs); 636 return; 637 } 638 intr = &xhci->intr[v]; 639 640 erdp = xhci_addr64(intr->erdp_low, intr->erdp_high); 641 if (erdp < intr->er_start || 642 erdp >= (intr->er_start + TRB_SIZE*intr->er_size)) { 643 DPRINTF("xhci: ERDP out of bounds: "DMA_ADDR_FMT"\n", erdp); 644 DPRINTF("xhci: ER[%d] at "DMA_ADDR_FMT" len %d\n", 645 v, intr->er_start, intr->er_size); 646 xhci_die(xhci); 647 return; 648 } 649 650 dp_idx = (erdp - intr->er_start) / TRB_SIZE; 651 assert(dp_idx < intr->er_size); 652 653 if ((intr->er_ep_idx + 2) % intr->er_size == dp_idx) { 654 DPRINTF("xhci: ER %d full, send ring full error\n", v); 655 XHCIEvent full = {ER_HOST_CONTROLLER, CC_EVENT_RING_FULL_ERROR}; 656 xhci_write_event(xhci, &full, v); 657 } else if ((intr->er_ep_idx + 1) % intr->er_size == dp_idx) { 658 DPRINTF("xhci: ER %d full, drop event\n", v); 659 } else { 660 xhci_write_event(xhci, event, v); 661 } 662 663 xhci_intr_raise(xhci, v); 664 } 665 666 static void xhci_ring_init(XHCIState *xhci, XHCIRing *ring, 667 dma_addr_t base) 668 { 669 ring->dequeue = base; 670 ring->ccs = 1; 671 } 672 673 static TRBType xhci_ring_fetch(XHCIState *xhci, XHCIRing *ring, XHCITRB *trb, 674 dma_addr_t *addr) 675 { 676 uint32_t link_cnt = 0; 677 678 while (1) { 679 TRBType type; 680 dma_memory_read(xhci->as, ring->dequeue, trb, TRB_SIZE); 681 trb->addr = ring->dequeue; 682 trb->ccs = ring->ccs; 683 le64_to_cpus(&trb->parameter); 684 le32_to_cpus(&trb->status); 685 le32_to_cpus(&trb->control); 686 687 trace_usb_xhci_fetch_trb(ring->dequeue, trb_name(trb), 688 trb->parameter, trb->status, trb->control); 689 690 if ((trb->control & TRB_C) != ring->ccs) { 691 return 0; 692 } 693 694 type = TRB_TYPE(*trb); 695 696 if (type != TR_LINK) { 697 if (addr) { 698 *addr = ring->dequeue; 699 } 700 ring->dequeue += TRB_SIZE; 701 return type; 702 } else { 703 if (++link_cnt > TRB_LINK_LIMIT) { 704 trace_usb_xhci_enforced_limit("trb-link"); 705 return 0; 706 } 707 ring->dequeue = xhci_mask64(trb->parameter); 708 if (trb->control & TRB_LK_TC) { 709 ring->ccs = !ring->ccs; 710 } 711 } 712 } 713 } 714 715 static int xhci_ring_chain_length(XHCIState *xhci, const XHCIRing *ring) 716 { 717 XHCITRB trb; 718 int length = 0; 719 dma_addr_t dequeue = ring->dequeue; 720 bool ccs = ring->ccs; 721 /* hack to bundle together the two/three TDs that make a setup transfer */ 722 bool control_td_set = 0; 723 uint32_t link_cnt = 0; 724 725 while (1) { 726 TRBType type; 727 dma_memory_read(xhci->as, dequeue, &trb, TRB_SIZE); 728 le64_to_cpus(&trb.parameter); 729 le32_to_cpus(&trb.status); 730 le32_to_cpus(&trb.control); 731 732 if ((trb.control & TRB_C) != ccs) { 733 return -length; 734 } 735 736 type = TRB_TYPE(trb); 737 738 if (type == TR_LINK) { 739 if (++link_cnt > TRB_LINK_LIMIT) { 740 return -length; 741 } 742 dequeue = xhci_mask64(trb.parameter); 743 if (trb.control & TRB_LK_TC) { 744 ccs = !ccs; 745 } 746 continue; 747 } 748 749 length += 1; 750 dequeue += TRB_SIZE; 751 752 if (type == TR_SETUP) { 753 control_td_set = 1; 754 } else if (type == TR_STATUS) { 755 control_td_set = 0; 756 } 757 758 if (!control_td_set && !(trb.control & TRB_TR_CH)) { 759 return length; 760 } 761 } 762 } 763 764 static void xhci_er_reset(XHCIState *xhci, int v) 765 { 766 XHCIInterrupter *intr = &xhci->intr[v]; 767 XHCIEvRingSeg seg; 768 dma_addr_t erstba = xhci_addr64(intr->erstba_low, intr->erstba_high); 769 770 if (intr->erstsz == 0 || erstba == 0) { 771 /* disabled */ 772 intr->er_start = 0; 773 intr->er_size = 0; 774 return; 775 } 776 /* cache the (sole) event ring segment location */ 777 if (intr->erstsz != 1) { 778 DPRINTF("xhci: invalid value for ERSTSZ: %d\n", intr->erstsz); 779 xhci_die(xhci); 780 return; 781 } 782 dma_memory_read(xhci->as, erstba, &seg, sizeof(seg)); 783 le32_to_cpus(&seg.addr_low); 784 le32_to_cpus(&seg.addr_high); 785 le32_to_cpus(&seg.size); 786 if (seg.size < 16 || seg.size > 4096) { 787 DPRINTF("xhci: invalid value for segment size: %d\n", seg.size); 788 xhci_die(xhci); 789 return; 790 } 791 intr->er_start = xhci_addr64(seg.addr_low, seg.addr_high); 792 intr->er_size = seg.size; 793 794 intr->er_ep_idx = 0; 795 intr->er_pcs = 1; 796 797 DPRINTF("xhci: event ring[%d]:" DMA_ADDR_FMT " [%d]\n", 798 v, intr->er_start, intr->er_size); 799 } 800 801 static void xhci_run(XHCIState *xhci) 802 { 803 trace_usb_xhci_run(); 804 xhci->usbsts &= ~USBSTS_HCH; 805 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 806 } 807 808 static void xhci_stop(XHCIState *xhci) 809 { 810 trace_usb_xhci_stop(); 811 xhci->usbsts |= USBSTS_HCH; 812 xhci->crcr_low &= ~CRCR_CRR; 813 } 814 815 static XHCIStreamContext *xhci_alloc_stream_contexts(unsigned count, 816 dma_addr_t base) 817 { 818 XHCIStreamContext *stctx; 819 unsigned int i; 820 821 stctx = g_new0(XHCIStreamContext, count); 822 for (i = 0; i < count; i++) { 823 stctx[i].pctx = base + i * 16; 824 stctx[i].sct = -1; 825 } 826 return stctx; 827 } 828 829 static void xhci_reset_streams(XHCIEPContext *epctx) 830 { 831 unsigned int i; 832 833 for (i = 0; i < epctx->nr_pstreams; i++) { 834 epctx->pstreams[i].sct = -1; 835 } 836 } 837 838 static void xhci_alloc_streams(XHCIEPContext *epctx, dma_addr_t base) 839 { 840 assert(epctx->pstreams == NULL); 841 epctx->nr_pstreams = 2 << epctx->max_pstreams; 842 epctx->pstreams = xhci_alloc_stream_contexts(epctx->nr_pstreams, base); 843 } 844 845 static void xhci_free_streams(XHCIEPContext *epctx) 846 { 847 assert(epctx->pstreams != NULL); 848 849 g_free(epctx->pstreams); 850 epctx->pstreams = NULL; 851 epctx->nr_pstreams = 0; 852 } 853 854 static int xhci_epmask_to_eps_with_streams(XHCIState *xhci, 855 unsigned int slotid, 856 uint32_t epmask, 857 XHCIEPContext **epctxs, 858 USBEndpoint **eps) 859 { 860 XHCISlot *slot; 861 XHCIEPContext *epctx; 862 USBEndpoint *ep; 863 int i, j; 864 865 assert(slotid >= 1 && slotid <= xhci->numslots); 866 867 slot = &xhci->slots[slotid - 1]; 868 869 for (i = 2, j = 0; i <= 31; i++) { 870 if (!(epmask & (1u << i))) { 871 continue; 872 } 873 874 epctx = slot->eps[i - 1]; 875 ep = xhci_epid_to_usbep(epctx); 876 if (!epctx || !epctx->nr_pstreams || !ep) { 877 continue; 878 } 879 880 if (epctxs) { 881 epctxs[j] = epctx; 882 } 883 eps[j++] = ep; 884 } 885 return j; 886 } 887 888 static void xhci_free_device_streams(XHCIState *xhci, unsigned int slotid, 889 uint32_t epmask) 890 { 891 USBEndpoint *eps[30]; 892 int nr_eps; 893 894 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, NULL, eps); 895 if (nr_eps) { 896 usb_device_free_streams(eps[0]->dev, eps, nr_eps); 897 } 898 } 899 900 static TRBCCode xhci_alloc_device_streams(XHCIState *xhci, unsigned int slotid, 901 uint32_t epmask) 902 { 903 XHCIEPContext *epctxs[30]; 904 USBEndpoint *eps[30]; 905 int i, r, nr_eps, req_nr_streams, dev_max_streams; 906 907 nr_eps = xhci_epmask_to_eps_with_streams(xhci, slotid, epmask, epctxs, 908 eps); 909 if (nr_eps == 0) { 910 return CC_SUCCESS; 911 } 912 913 req_nr_streams = epctxs[0]->nr_pstreams; 914 dev_max_streams = eps[0]->max_streams; 915 916 for (i = 1; i < nr_eps; i++) { 917 /* 918 * HdG: I don't expect these to ever trigger, but if they do we need 919 * to come up with another solution, ie group identical endpoints 920 * together and make an usb_device_alloc_streams call per group. 921 */ 922 if (epctxs[i]->nr_pstreams != req_nr_streams) { 923 FIXME("guest streams config not identical for all eps"); 924 return CC_RESOURCE_ERROR; 925 } 926 if (eps[i]->max_streams != dev_max_streams) { 927 FIXME("device streams config not identical for all eps"); 928 return CC_RESOURCE_ERROR; 929 } 930 } 931 932 /* 933 * max-streams in both the device descriptor and in the controller is a 934 * power of 2. But stream id 0 is reserved, so if a device can do up to 4 935 * streams the guest will ask for 5 rounded up to the next power of 2 which 936 * becomes 8. For emulated devices usb_device_alloc_streams is a nop. 937 * 938 * For redirected devices however this is an issue, as there we must ask 939 * the real xhci controller to alloc streams, and the host driver for the 940 * real xhci controller will likely disallow allocating more streams then 941 * the device can handle. 942 * 943 * So we limit the requested nr_streams to the maximum number the device 944 * can handle. 945 */ 946 if (req_nr_streams > dev_max_streams) { 947 req_nr_streams = dev_max_streams; 948 } 949 950 r = usb_device_alloc_streams(eps[0]->dev, eps, nr_eps, req_nr_streams); 951 if (r != 0) { 952 DPRINTF("xhci: alloc streams failed\n"); 953 return CC_RESOURCE_ERROR; 954 } 955 956 return CC_SUCCESS; 957 } 958 959 static XHCIStreamContext *xhci_find_stream(XHCIEPContext *epctx, 960 unsigned int streamid, 961 uint32_t *cc_error) 962 { 963 XHCIStreamContext *sctx; 964 dma_addr_t base; 965 uint32_t ctx[2], sct; 966 967 assert(streamid != 0); 968 if (epctx->lsa) { 969 if (streamid >= epctx->nr_pstreams) { 970 *cc_error = CC_INVALID_STREAM_ID_ERROR; 971 return NULL; 972 } 973 sctx = epctx->pstreams + streamid; 974 } else { 975 FIXME("secondary streams not implemented yet"); 976 } 977 978 if (sctx->sct == -1) { 979 xhci_dma_read_u32s(epctx->xhci, sctx->pctx, ctx, sizeof(ctx)); 980 sct = (ctx[0] >> 1) & 0x07; 981 if (epctx->lsa && sct != 1) { 982 *cc_error = CC_INVALID_STREAM_TYPE_ERROR; 983 return NULL; 984 } 985 sctx->sct = sct; 986 base = xhci_addr64(ctx[0] & ~0xf, ctx[1]); 987 xhci_ring_init(epctx->xhci, &sctx->ring, base); 988 } 989 return sctx; 990 } 991 992 static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx, 993 XHCIStreamContext *sctx, uint32_t state) 994 { 995 XHCIRing *ring = NULL; 996 uint32_t ctx[5]; 997 uint32_t ctx2[2]; 998 999 xhci_dma_read_u32s(xhci, epctx->pctx, ctx, sizeof(ctx)); 1000 ctx[0] &= ~EP_STATE_MASK; 1001 ctx[0] |= state; 1002 1003 /* update ring dequeue ptr */ 1004 if (epctx->nr_pstreams) { 1005 if (sctx != NULL) { 1006 ring = &sctx->ring; 1007 xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2)); 1008 ctx2[0] &= 0xe; 1009 ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs; 1010 ctx2[1] = (sctx->ring.dequeue >> 16) >> 16; 1011 xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2)); 1012 } 1013 } else { 1014 ring = &epctx->ring; 1015 } 1016 if (ring) { 1017 ctx[2] = ring->dequeue | ring->ccs; 1018 ctx[3] = (ring->dequeue >> 16) >> 16; 1019 1020 DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d dequeue=%08x%08x\n", 1021 epctx->pctx, state, ctx[3], ctx[2]); 1022 } 1023 1024 xhci_dma_write_u32s(xhci, epctx->pctx, ctx, sizeof(ctx)); 1025 if (epctx->state != state) { 1026 trace_usb_xhci_ep_state(epctx->slotid, epctx->epid, 1027 ep_state_name(epctx->state), 1028 ep_state_name(state)); 1029 } 1030 epctx->state = state; 1031 } 1032 1033 static void xhci_ep_kick_timer(void *opaque) 1034 { 1035 XHCIEPContext *epctx = opaque; 1036 xhci_kick_epctx(epctx, 0); 1037 } 1038 1039 static XHCIEPContext *xhci_alloc_epctx(XHCIState *xhci, 1040 unsigned int slotid, 1041 unsigned int epid) 1042 { 1043 XHCIEPContext *epctx; 1044 1045 epctx = g_new0(XHCIEPContext, 1); 1046 epctx->xhci = xhci; 1047 epctx->slotid = slotid; 1048 epctx->epid = epid; 1049 1050 QTAILQ_INIT(&epctx->transfers); 1051 epctx->kick_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_ep_kick_timer, epctx); 1052 1053 return epctx; 1054 } 1055 1056 static void xhci_init_epctx(XHCIEPContext *epctx, 1057 dma_addr_t pctx, uint32_t *ctx) 1058 { 1059 dma_addr_t dequeue; 1060 1061 dequeue = xhci_addr64(ctx[2] & ~0xf, ctx[3]); 1062 1063 epctx->type = (ctx[1] >> EP_TYPE_SHIFT) & EP_TYPE_MASK; 1064 epctx->pctx = pctx; 1065 epctx->max_psize = ctx[1]>>16; 1066 epctx->max_psize *= 1+((ctx[1]>>8)&0xff); 1067 epctx->max_pstreams = (ctx[0] >> 10) & epctx->xhci->max_pstreams_mask; 1068 epctx->lsa = (ctx[0] >> 15) & 1; 1069 if (epctx->max_pstreams) { 1070 xhci_alloc_streams(epctx, dequeue); 1071 } else { 1072 xhci_ring_init(epctx->xhci, &epctx->ring, dequeue); 1073 epctx->ring.ccs = ctx[2] & 1; 1074 } 1075 1076 epctx->interval = 1 << ((ctx[0] >> 16) & 0xff); 1077 } 1078 1079 static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid, 1080 unsigned int epid, dma_addr_t pctx, 1081 uint32_t *ctx) 1082 { 1083 XHCISlot *slot; 1084 XHCIEPContext *epctx; 1085 1086 trace_usb_xhci_ep_enable(slotid, epid); 1087 assert(slotid >= 1 && slotid <= xhci->numslots); 1088 assert(epid >= 1 && epid <= 31); 1089 1090 slot = &xhci->slots[slotid-1]; 1091 if (slot->eps[epid-1]) { 1092 xhci_disable_ep(xhci, slotid, epid); 1093 } 1094 1095 epctx = xhci_alloc_epctx(xhci, slotid, epid); 1096 slot->eps[epid-1] = epctx; 1097 xhci_init_epctx(epctx, pctx, ctx); 1098 1099 DPRINTF("xhci: endpoint %d.%d type is %d, max transaction (burst) " 1100 "size is %d\n", epid/2, epid%2, epctx->type, epctx->max_psize); 1101 1102 epctx->mfindex_last = 0; 1103 1104 epctx->state = EP_RUNNING; 1105 ctx[0] &= ~EP_STATE_MASK; 1106 ctx[0] |= EP_RUNNING; 1107 1108 return CC_SUCCESS; 1109 } 1110 1111 static XHCITransfer *xhci_ep_alloc_xfer(XHCIEPContext *epctx, 1112 uint32_t length) 1113 { 1114 uint32_t limit = epctx->nr_pstreams + 16; 1115 XHCITransfer *xfer; 1116 1117 if (epctx->xfer_count >= limit) { 1118 return NULL; 1119 } 1120 1121 xfer = g_new0(XHCITransfer, 1); 1122 xfer->epctx = epctx; 1123 xfer->trbs = g_new(XHCITRB, length); 1124 xfer->trb_count = length; 1125 usb_packet_init(&xfer->packet); 1126 1127 QTAILQ_INSERT_TAIL(&epctx->transfers, xfer, next); 1128 epctx->xfer_count++; 1129 1130 return xfer; 1131 } 1132 1133 static void xhci_ep_free_xfer(XHCITransfer *xfer) 1134 { 1135 QTAILQ_REMOVE(&xfer->epctx->transfers, xfer, next); 1136 xfer->epctx->xfer_count--; 1137 1138 usb_packet_cleanup(&xfer->packet); 1139 g_free(xfer->trbs); 1140 g_free(xfer); 1141 } 1142 1143 static int xhci_ep_nuke_one_xfer(XHCITransfer *t, TRBCCode report) 1144 { 1145 int killed = 0; 1146 1147 if (report && (t->running_async || t->running_retry)) { 1148 t->status = report; 1149 xhci_xfer_report(t); 1150 } 1151 1152 if (t->running_async) { 1153 usb_cancel_packet(&t->packet); 1154 t->running_async = 0; 1155 killed = 1; 1156 } 1157 if (t->running_retry) { 1158 if (t->epctx) { 1159 t->epctx->retry = NULL; 1160 timer_del(t->epctx->kick_timer); 1161 } 1162 t->running_retry = 0; 1163 killed = 1; 1164 } 1165 g_free(t->trbs); 1166 1167 t->trbs = NULL; 1168 t->trb_count = 0; 1169 1170 return killed; 1171 } 1172 1173 static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid, 1174 unsigned int epid, TRBCCode report) 1175 { 1176 XHCISlot *slot; 1177 XHCIEPContext *epctx; 1178 XHCITransfer *xfer; 1179 int killed = 0; 1180 USBEndpoint *ep = NULL; 1181 assert(slotid >= 1 && slotid <= xhci->numslots); 1182 assert(epid >= 1 && epid <= 31); 1183 1184 DPRINTF("xhci_ep_nuke_xfers(%d, %d)\n", slotid, epid); 1185 1186 slot = &xhci->slots[slotid-1]; 1187 1188 if (!slot->eps[epid-1]) { 1189 return 0; 1190 } 1191 1192 epctx = slot->eps[epid-1]; 1193 1194 for (;;) { 1195 xfer = QTAILQ_FIRST(&epctx->transfers); 1196 if (xfer == NULL) { 1197 break; 1198 } 1199 killed += xhci_ep_nuke_one_xfer(xfer, report); 1200 if (killed) { 1201 report = 0; /* Only report once */ 1202 } 1203 xhci_ep_free_xfer(xfer); 1204 } 1205 1206 ep = xhci_epid_to_usbep(epctx); 1207 if (ep) { 1208 usb_device_ep_stopped(ep->dev, ep); 1209 } 1210 return killed; 1211 } 1212 1213 static TRBCCode xhci_disable_ep(XHCIState *xhci, unsigned int slotid, 1214 unsigned int epid) 1215 { 1216 XHCISlot *slot; 1217 XHCIEPContext *epctx; 1218 1219 trace_usb_xhci_ep_disable(slotid, epid); 1220 assert(slotid >= 1 && slotid <= xhci->numslots); 1221 assert(epid >= 1 && epid <= 31); 1222 1223 slot = &xhci->slots[slotid-1]; 1224 1225 if (!slot->eps[epid-1]) { 1226 DPRINTF("xhci: slot %d ep %d already disabled\n", slotid, epid); 1227 return CC_SUCCESS; 1228 } 1229 1230 xhci_ep_nuke_xfers(xhci, slotid, epid, 0); 1231 1232 epctx = slot->eps[epid-1]; 1233 1234 if (epctx->nr_pstreams) { 1235 xhci_free_streams(epctx); 1236 } 1237 1238 /* only touch guest RAM if we're not resetting the HC */ 1239 if (xhci->dcbaap_low || xhci->dcbaap_high) { 1240 xhci_set_ep_state(xhci, epctx, NULL, EP_DISABLED); 1241 } 1242 1243 timer_free(epctx->kick_timer); 1244 g_free(epctx); 1245 slot->eps[epid-1] = NULL; 1246 1247 return CC_SUCCESS; 1248 } 1249 1250 static TRBCCode xhci_stop_ep(XHCIState *xhci, unsigned int slotid, 1251 unsigned int epid) 1252 { 1253 XHCISlot *slot; 1254 XHCIEPContext *epctx; 1255 1256 trace_usb_xhci_ep_stop(slotid, epid); 1257 assert(slotid >= 1 && slotid <= xhci->numslots); 1258 1259 if (epid < 1 || epid > 31) { 1260 DPRINTF("xhci: bad ep %d\n", epid); 1261 return CC_TRB_ERROR; 1262 } 1263 1264 slot = &xhci->slots[slotid-1]; 1265 1266 if (!slot->eps[epid-1]) { 1267 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); 1268 return CC_EP_NOT_ENABLED_ERROR; 1269 } 1270 1271 if (xhci_ep_nuke_xfers(xhci, slotid, epid, CC_STOPPED) > 0) { 1272 DPRINTF("xhci: FIXME: endpoint stopped w/ xfers running, " 1273 "data might be lost\n"); 1274 } 1275 1276 epctx = slot->eps[epid-1]; 1277 1278 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED); 1279 1280 if (epctx->nr_pstreams) { 1281 xhci_reset_streams(epctx); 1282 } 1283 1284 return CC_SUCCESS; 1285 } 1286 1287 static TRBCCode xhci_reset_ep(XHCIState *xhci, unsigned int slotid, 1288 unsigned int epid) 1289 { 1290 XHCISlot *slot; 1291 XHCIEPContext *epctx; 1292 1293 trace_usb_xhci_ep_reset(slotid, epid); 1294 assert(slotid >= 1 && slotid <= xhci->numslots); 1295 1296 if (epid < 1 || epid > 31) { 1297 DPRINTF("xhci: bad ep %d\n", epid); 1298 return CC_TRB_ERROR; 1299 } 1300 1301 slot = &xhci->slots[slotid-1]; 1302 1303 if (!slot->eps[epid-1]) { 1304 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); 1305 return CC_EP_NOT_ENABLED_ERROR; 1306 } 1307 1308 epctx = slot->eps[epid-1]; 1309 1310 if (epctx->state != EP_HALTED) { 1311 DPRINTF("xhci: reset EP while EP %d not halted (%d)\n", 1312 epid, epctx->state); 1313 return CC_CONTEXT_STATE_ERROR; 1314 } 1315 1316 if (xhci_ep_nuke_xfers(xhci, slotid, epid, 0) > 0) { 1317 DPRINTF("xhci: FIXME: endpoint reset w/ xfers running, " 1318 "data might be lost\n"); 1319 } 1320 1321 if (!xhci->slots[slotid-1].uport || 1322 !xhci->slots[slotid-1].uport->dev || 1323 !xhci->slots[slotid-1].uport->dev->attached) { 1324 return CC_USB_TRANSACTION_ERROR; 1325 } 1326 1327 xhci_set_ep_state(xhci, epctx, NULL, EP_STOPPED); 1328 1329 if (epctx->nr_pstreams) { 1330 xhci_reset_streams(epctx); 1331 } 1332 1333 return CC_SUCCESS; 1334 } 1335 1336 static TRBCCode xhci_set_ep_dequeue(XHCIState *xhci, unsigned int slotid, 1337 unsigned int epid, unsigned int streamid, 1338 uint64_t pdequeue) 1339 { 1340 XHCISlot *slot; 1341 XHCIEPContext *epctx; 1342 XHCIStreamContext *sctx; 1343 dma_addr_t dequeue; 1344 1345 assert(slotid >= 1 && slotid <= xhci->numslots); 1346 1347 if (epid < 1 || epid > 31) { 1348 DPRINTF("xhci: bad ep %d\n", epid); 1349 return CC_TRB_ERROR; 1350 } 1351 1352 trace_usb_xhci_ep_set_dequeue(slotid, epid, streamid, pdequeue); 1353 dequeue = xhci_mask64(pdequeue); 1354 1355 slot = &xhci->slots[slotid-1]; 1356 1357 if (!slot->eps[epid-1]) { 1358 DPRINTF("xhci: slot %d ep %d not enabled\n", slotid, epid); 1359 return CC_EP_NOT_ENABLED_ERROR; 1360 } 1361 1362 epctx = slot->eps[epid-1]; 1363 1364 if (epctx->state != EP_STOPPED) { 1365 DPRINTF("xhci: set EP dequeue pointer while EP %d not stopped\n", epid); 1366 return CC_CONTEXT_STATE_ERROR; 1367 } 1368 1369 if (epctx->nr_pstreams) { 1370 uint32_t err; 1371 sctx = xhci_find_stream(epctx, streamid, &err); 1372 if (sctx == NULL) { 1373 return err; 1374 } 1375 xhci_ring_init(xhci, &sctx->ring, dequeue & ~0xf); 1376 sctx->ring.ccs = dequeue & 1; 1377 } else { 1378 sctx = NULL; 1379 xhci_ring_init(xhci, &epctx->ring, dequeue & ~0xF); 1380 epctx->ring.ccs = dequeue & 1; 1381 } 1382 1383 xhci_set_ep_state(xhci, epctx, sctx, EP_STOPPED); 1384 1385 return CC_SUCCESS; 1386 } 1387 1388 static int xhci_xfer_create_sgl(XHCITransfer *xfer, int in_xfer) 1389 { 1390 XHCIState *xhci = xfer->epctx->xhci; 1391 int i; 1392 1393 xfer->int_req = false; 1394 qemu_sglist_init(&xfer->sgl, DEVICE(xhci), xfer->trb_count, xhci->as); 1395 for (i = 0; i < xfer->trb_count; i++) { 1396 XHCITRB *trb = &xfer->trbs[i]; 1397 dma_addr_t addr; 1398 unsigned int chunk = 0; 1399 1400 if (trb->control & TRB_TR_IOC) { 1401 xfer->int_req = true; 1402 } 1403 1404 switch (TRB_TYPE(*trb)) { 1405 case TR_DATA: 1406 if ((!(trb->control & TRB_TR_DIR)) != (!in_xfer)) { 1407 DPRINTF("xhci: data direction mismatch for TR_DATA\n"); 1408 goto err; 1409 } 1410 /* fallthrough */ 1411 case TR_NORMAL: 1412 case TR_ISOCH: 1413 addr = xhci_mask64(trb->parameter); 1414 chunk = trb->status & 0x1ffff; 1415 if (trb->control & TRB_TR_IDT) { 1416 if (chunk > 8 || in_xfer) { 1417 DPRINTF("xhci: invalid immediate data TRB\n"); 1418 goto err; 1419 } 1420 qemu_sglist_add(&xfer->sgl, trb->addr, chunk); 1421 } else { 1422 qemu_sglist_add(&xfer->sgl, addr, chunk); 1423 } 1424 break; 1425 } 1426 } 1427 1428 return 0; 1429 1430 err: 1431 qemu_sglist_destroy(&xfer->sgl); 1432 xhci_die(xhci); 1433 return -1; 1434 } 1435 1436 static void xhci_xfer_unmap(XHCITransfer *xfer) 1437 { 1438 usb_packet_unmap(&xfer->packet, &xfer->sgl); 1439 qemu_sglist_destroy(&xfer->sgl); 1440 } 1441 1442 static void xhci_xfer_report(XHCITransfer *xfer) 1443 { 1444 uint32_t edtla = 0; 1445 unsigned int left; 1446 bool reported = 0; 1447 bool shortpkt = 0; 1448 XHCIEvent event = {ER_TRANSFER, CC_SUCCESS}; 1449 XHCIState *xhci = xfer->epctx->xhci; 1450 int i; 1451 1452 left = xfer->packet.actual_length; 1453 1454 for (i = 0; i < xfer->trb_count; i++) { 1455 XHCITRB *trb = &xfer->trbs[i]; 1456 unsigned int chunk = 0; 1457 1458 switch (TRB_TYPE(*trb)) { 1459 case TR_SETUP: 1460 chunk = trb->status & 0x1ffff; 1461 if (chunk > 8) { 1462 chunk = 8; 1463 } 1464 break; 1465 case TR_DATA: 1466 case TR_NORMAL: 1467 case TR_ISOCH: 1468 chunk = trb->status & 0x1ffff; 1469 if (chunk > left) { 1470 chunk = left; 1471 if (xfer->status == CC_SUCCESS) { 1472 shortpkt = 1; 1473 } 1474 } 1475 left -= chunk; 1476 edtla += chunk; 1477 break; 1478 case TR_STATUS: 1479 reported = 0; 1480 shortpkt = 0; 1481 break; 1482 } 1483 1484 if (!reported && ((trb->control & TRB_TR_IOC) || 1485 (shortpkt && (trb->control & TRB_TR_ISP)) || 1486 (xfer->status != CC_SUCCESS && left == 0))) { 1487 event.slotid = xfer->epctx->slotid; 1488 event.epid = xfer->epctx->epid; 1489 event.length = (trb->status & 0x1ffff) - chunk; 1490 event.flags = 0; 1491 event.ptr = trb->addr; 1492 if (xfer->status == CC_SUCCESS) { 1493 event.ccode = shortpkt ? CC_SHORT_PACKET : CC_SUCCESS; 1494 } else { 1495 event.ccode = xfer->status; 1496 } 1497 if (TRB_TYPE(*trb) == TR_EVDATA) { 1498 event.ptr = trb->parameter; 1499 event.flags |= TRB_EV_ED; 1500 event.length = edtla & 0xffffff; 1501 DPRINTF("xhci_xfer_data: EDTLA=%d\n", event.length); 1502 edtla = 0; 1503 } 1504 xhci_event(xhci, &event, TRB_INTR(*trb)); 1505 reported = 1; 1506 if (xfer->status != CC_SUCCESS) { 1507 return; 1508 } 1509 } 1510 1511 switch (TRB_TYPE(*trb)) { 1512 case TR_SETUP: 1513 reported = 0; 1514 shortpkt = 0; 1515 break; 1516 } 1517 1518 } 1519 } 1520 1521 static void xhci_stall_ep(XHCITransfer *xfer) 1522 { 1523 XHCIEPContext *epctx = xfer->epctx; 1524 XHCIState *xhci = epctx->xhci; 1525 uint32_t err; 1526 XHCIStreamContext *sctx; 1527 1528 if (epctx->type == ET_ISO_IN || epctx->type == ET_ISO_OUT) { 1529 /* never halt isoch endpoints, 4.10.2 */ 1530 return; 1531 } 1532 1533 if (epctx->nr_pstreams) { 1534 sctx = xhci_find_stream(epctx, xfer->streamid, &err); 1535 if (sctx == NULL) { 1536 return; 1537 } 1538 sctx->ring.dequeue = xfer->trbs[0].addr; 1539 sctx->ring.ccs = xfer->trbs[0].ccs; 1540 xhci_set_ep_state(xhci, epctx, sctx, EP_HALTED); 1541 } else { 1542 epctx->ring.dequeue = xfer->trbs[0].addr; 1543 epctx->ring.ccs = xfer->trbs[0].ccs; 1544 xhci_set_ep_state(xhci, epctx, NULL, EP_HALTED); 1545 } 1546 } 1547 1548 static int xhci_setup_packet(XHCITransfer *xfer) 1549 { 1550 USBEndpoint *ep; 1551 int dir; 1552 1553 dir = xfer->in_xfer ? USB_TOKEN_IN : USB_TOKEN_OUT; 1554 1555 if (xfer->packet.ep) { 1556 ep = xfer->packet.ep; 1557 } else { 1558 ep = xhci_epid_to_usbep(xfer->epctx); 1559 if (!ep) { 1560 DPRINTF("xhci: slot %d has no device\n", 1561 xfer->epctx->slotid); 1562 return -1; 1563 } 1564 } 1565 1566 xhci_xfer_create_sgl(xfer, dir == USB_TOKEN_IN); /* Also sets int_req */ 1567 usb_packet_setup(&xfer->packet, dir, ep, xfer->streamid, 1568 xfer->trbs[0].addr, false, xfer->int_req); 1569 if (usb_packet_map(&xfer->packet, &xfer->sgl)) { 1570 qemu_sglist_destroy(&xfer->sgl); 1571 return -1; 1572 } 1573 DPRINTF("xhci: setup packet pid 0x%x addr %d ep %d\n", 1574 xfer->packet.pid, ep->dev->addr, ep->nr); 1575 return 0; 1576 } 1577 1578 static int xhci_try_complete_packet(XHCITransfer *xfer) 1579 { 1580 if (xfer->packet.status == USB_RET_ASYNC) { 1581 trace_usb_xhci_xfer_async(xfer); 1582 xfer->running_async = 1; 1583 xfer->running_retry = 0; 1584 xfer->complete = 0; 1585 return 0; 1586 } else if (xfer->packet.status == USB_RET_NAK) { 1587 trace_usb_xhci_xfer_nak(xfer); 1588 xfer->running_async = 0; 1589 xfer->running_retry = 1; 1590 xfer->complete = 0; 1591 return 0; 1592 } else { 1593 xfer->running_async = 0; 1594 xfer->running_retry = 0; 1595 xfer->complete = 1; 1596 xhci_xfer_unmap(xfer); 1597 } 1598 1599 if (xfer->packet.status == USB_RET_SUCCESS) { 1600 trace_usb_xhci_xfer_success(xfer, xfer->packet.actual_length); 1601 xfer->status = CC_SUCCESS; 1602 xhci_xfer_report(xfer); 1603 return 0; 1604 } 1605 1606 /* error */ 1607 trace_usb_xhci_xfer_error(xfer, xfer->packet.status); 1608 switch (xfer->packet.status) { 1609 case USB_RET_NODEV: 1610 case USB_RET_IOERROR: 1611 xfer->status = CC_USB_TRANSACTION_ERROR; 1612 xhci_xfer_report(xfer); 1613 xhci_stall_ep(xfer); 1614 break; 1615 case USB_RET_STALL: 1616 xfer->status = CC_STALL_ERROR; 1617 xhci_xfer_report(xfer); 1618 xhci_stall_ep(xfer); 1619 break; 1620 case USB_RET_BABBLE: 1621 xfer->status = CC_BABBLE_DETECTED; 1622 xhci_xfer_report(xfer); 1623 xhci_stall_ep(xfer); 1624 break; 1625 default: 1626 DPRINTF("%s: FIXME: status = %d\n", __func__, 1627 xfer->packet.status); 1628 FIXME("unhandled USB_RET_*"); 1629 } 1630 return 0; 1631 } 1632 1633 static int xhci_fire_ctl_transfer(XHCIState *xhci, XHCITransfer *xfer) 1634 { 1635 XHCITRB *trb_setup, *trb_status; 1636 uint8_t bmRequestType; 1637 1638 trb_setup = &xfer->trbs[0]; 1639 trb_status = &xfer->trbs[xfer->trb_count-1]; 1640 1641 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid, 1642 xfer->epctx->epid, xfer->streamid); 1643 1644 /* at most one Event Data TRB allowed after STATUS */ 1645 if (TRB_TYPE(*trb_status) == TR_EVDATA && xfer->trb_count > 2) { 1646 trb_status--; 1647 } 1648 1649 /* do some sanity checks */ 1650 if (TRB_TYPE(*trb_setup) != TR_SETUP) { 1651 DPRINTF("xhci: ep0 first TD not SETUP: %d\n", 1652 TRB_TYPE(*trb_setup)); 1653 return -1; 1654 } 1655 if (TRB_TYPE(*trb_status) != TR_STATUS) { 1656 DPRINTF("xhci: ep0 last TD not STATUS: %d\n", 1657 TRB_TYPE(*trb_status)); 1658 return -1; 1659 } 1660 if (!(trb_setup->control & TRB_TR_IDT)) { 1661 DPRINTF("xhci: Setup TRB doesn't have IDT set\n"); 1662 return -1; 1663 } 1664 if ((trb_setup->status & 0x1ffff) != 8) { 1665 DPRINTF("xhci: Setup TRB has bad length (%d)\n", 1666 (trb_setup->status & 0x1ffff)); 1667 return -1; 1668 } 1669 1670 bmRequestType = trb_setup->parameter; 1671 1672 xfer->in_xfer = bmRequestType & USB_DIR_IN; 1673 xfer->iso_xfer = false; 1674 xfer->timed_xfer = false; 1675 1676 if (xhci_setup_packet(xfer) < 0) { 1677 return -1; 1678 } 1679 xfer->packet.parameter = trb_setup->parameter; 1680 1681 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); 1682 xhci_try_complete_packet(xfer); 1683 return 0; 1684 } 1685 1686 static void xhci_calc_intr_kick(XHCIState *xhci, XHCITransfer *xfer, 1687 XHCIEPContext *epctx, uint64_t mfindex) 1688 { 1689 uint64_t asap = ((mfindex + epctx->interval - 1) & 1690 ~(epctx->interval-1)); 1691 uint64_t kick = epctx->mfindex_last + epctx->interval; 1692 1693 assert(epctx->interval != 0); 1694 xfer->mfindex_kick = MAX(asap, kick); 1695 } 1696 1697 static void xhci_calc_iso_kick(XHCIState *xhci, XHCITransfer *xfer, 1698 XHCIEPContext *epctx, uint64_t mfindex) 1699 { 1700 if (xfer->trbs[0].control & TRB_TR_SIA) { 1701 uint64_t asap = ((mfindex + epctx->interval - 1) & 1702 ~(epctx->interval-1)); 1703 if (asap >= epctx->mfindex_last && 1704 asap <= epctx->mfindex_last + epctx->interval * 4) { 1705 xfer->mfindex_kick = epctx->mfindex_last + epctx->interval; 1706 } else { 1707 xfer->mfindex_kick = asap; 1708 } 1709 } else { 1710 xfer->mfindex_kick = ((xfer->trbs[0].control >> TRB_TR_FRAMEID_SHIFT) 1711 & TRB_TR_FRAMEID_MASK) << 3; 1712 xfer->mfindex_kick |= mfindex & ~0x3fff; 1713 if (xfer->mfindex_kick + 0x100 < mfindex) { 1714 xfer->mfindex_kick += 0x4000; 1715 } 1716 } 1717 } 1718 1719 static void xhci_check_intr_iso_kick(XHCIState *xhci, XHCITransfer *xfer, 1720 XHCIEPContext *epctx, uint64_t mfindex) 1721 { 1722 if (xfer->mfindex_kick > mfindex) { 1723 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + 1724 (xfer->mfindex_kick - mfindex) * 125000); 1725 xfer->running_retry = 1; 1726 } else { 1727 epctx->mfindex_last = xfer->mfindex_kick; 1728 timer_del(epctx->kick_timer); 1729 xfer->running_retry = 0; 1730 } 1731 } 1732 1733 1734 static int xhci_submit(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx) 1735 { 1736 uint64_t mfindex; 1737 1738 DPRINTF("xhci_submit(slotid=%d,epid=%d)\n", epctx->slotid, epctx->epid); 1739 1740 xfer->in_xfer = epctx->type>>2; 1741 1742 switch(epctx->type) { 1743 case ET_INTR_OUT: 1744 case ET_INTR_IN: 1745 xfer->pkts = 0; 1746 xfer->iso_xfer = false; 1747 xfer->timed_xfer = true; 1748 mfindex = xhci_mfindex_get(xhci); 1749 xhci_calc_intr_kick(xhci, xfer, epctx, mfindex); 1750 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); 1751 if (xfer->running_retry) { 1752 return -1; 1753 } 1754 break; 1755 case ET_BULK_OUT: 1756 case ET_BULK_IN: 1757 xfer->pkts = 0; 1758 xfer->iso_xfer = false; 1759 xfer->timed_xfer = false; 1760 break; 1761 case ET_ISO_OUT: 1762 case ET_ISO_IN: 1763 xfer->pkts = 1; 1764 xfer->iso_xfer = true; 1765 xfer->timed_xfer = true; 1766 mfindex = xhci_mfindex_get(xhci); 1767 xhci_calc_iso_kick(xhci, xfer, epctx, mfindex); 1768 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); 1769 if (xfer->running_retry) { 1770 return -1; 1771 } 1772 break; 1773 default: 1774 trace_usb_xhci_unimplemented("endpoint type", epctx->type); 1775 return -1; 1776 } 1777 1778 if (xhci_setup_packet(xfer) < 0) { 1779 return -1; 1780 } 1781 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); 1782 xhci_try_complete_packet(xfer); 1783 return 0; 1784 } 1785 1786 static int xhci_fire_transfer(XHCIState *xhci, XHCITransfer *xfer, XHCIEPContext *epctx) 1787 { 1788 trace_usb_xhci_xfer_start(xfer, xfer->epctx->slotid, 1789 xfer->epctx->epid, xfer->streamid); 1790 return xhci_submit(xhci, xfer, epctx); 1791 } 1792 1793 static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid, 1794 unsigned int epid, unsigned int streamid) 1795 { 1796 XHCIEPContext *epctx; 1797 1798 assert(slotid >= 1 && slotid <= xhci->numslots); 1799 assert(epid >= 1 && epid <= 31); 1800 1801 if (!xhci->slots[slotid-1].enabled) { 1802 DPRINTF("xhci: xhci_kick_ep for disabled slot %d\n", slotid); 1803 return; 1804 } 1805 epctx = xhci->slots[slotid-1].eps[epid-1]; 1806 if (!epctx) { 1807 DPRINTF("xhci: xhci_kick_ep for disabled endpoint %d,%d\n", 1808 epid, slotid); 1809 return; 1810 } 1811 1812 if (epctx->kick_active) { 1813 return; 1814 } 1815 xhci_kick_epctx(epctx, streamid); 1816 } 1817 1818 static bool xhci_slot_ok(XHCIState *xhci, int slotid) 1819 { 1820 return (xhci->slots[slotid - 1].uport && 1821 xhci->slots[slotid - 1].uport->dev && 1822 xhci->slots[slotid - 1].uport->dev->attached); 1823 } 1824 1825 static void xhci_kick_epctx(XHCIEPContext *epctx, unsigned int streamid) 1826 { 1827 XHCIState *xhci = epctx->xhci; 1828 XHCIStreamContext *stctx = NULL; 1829 XHCITransfer *xfer; 1830 XHCIRing *ring; 1831 USBEndpoint *ep = NULL; 1832 uint64_t mfindex; 1833 unsigned int count = 0; 1834 int length; 1835 int i; 1836 1837 trace_usb_xhci_ep_kick(epctx->slotid, epctx->epid, streamid); 1838 assert(!epctx->kick_active); 1839 1840 /* If the device has been detached, but the guest has not noticed this 1841 yet the 2 above checks will succeed, but we must NOT continue */ 1842 if (!xhci_slot_ok(xhci, epctx->slotid)) { 1843 return; 1844 } 1845 1846 if (epctx->retry) { 1847 XHCITransfer *xfer = epctx->retry; 1848 1849 trace_usb_xhci_xfer_retry(xfer); 1850 assert(xfer->running_retry); 1851 if (xfer->timed_xfer) { 1852 /* time to kick the transfer? */ 1853 mfindex = xhci_mfindex_get(xhci); 1854 xhci_check_intr_iso_kick(xhci, xfer, epctx, mfindex); 1855 if (xfer->running_retry) { 1856 return; 1857 } 1858 xfer->timed_xfer = 0; 1859 xfer->running_retry = 1; 1860 } 1861 if (xfer->iso_xfer) { 1862 /* retry iso transfer */ 1863 if (xhci_setup_packet(xfer) < 0) { 1864 return; 1865 } 1866 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); 1867 assert(xfer->packet.status != USB_RET_NAK); 1868 xhci_try_complete_packet(xfer); 1869 } else { 1870 /* retry nak'ed transfer */ 1871 if (xhci_setup_packet(xfer) < 0) { 1872 return; 1873 } 1874 usb_handle_packet(xfer->packet.ep->dev, &xfer->packet); 1875 if (xfer->packet.status == USB_RET_NAK) { 1876 xhci_xfer_unmap(xfer); 1877 return; 1878 } 1879 xhci_try_complete_packet(xfer); 1880 } 1881 assert(!xfer->running_retry); 1882 if (xfer->complete) { 1883 /* update ring dequeue ptr */ 1884 xhci_set_ep_state(xhci, epctx, stctx, epctx->state); 1885 xhci_ep_free_xfer(epctx->retry); 1886 } 1887 epctx->retry = NULL; 1888 } 1889 1890 if (epctx->state == EP_HALTED) { 1891 DPRINTF("xhci: ep halted, not running schedule\n"); 1892 return; 1893 } 1894 1895 1896 if (epctx->nr_pstreams) { 1897 uint32_t err; 1898 stctx = xhci_find_stream(epctx, streamid, &err); 1899 if (stctx == NULL) { 1900 return; 1901 } 1902 ring = &stctx->ring; 1903 xhci_set_ep_state(xhci, epctx, stctx, EP_RUNNING); 1904 } else { 1905 ring = &epctx->ring; 1906 streamid = 0; 1907 xhci_set_ep_state(xhci, epctx, NULL, EP_RUNNING); 1908 } 1909 assert(ring->dequeue != 0); 1910 1911 epctx->kick_active++; 1912 while (1) { 1913 length = xhci_ring_chain_length(xhci, ring); 1914 if (length <= 0) { 1915 if (epctx->type == ET_ISO_OUT || epctx->type == ET_ISO_IN) { 1916 /* 4.10.3.1 */ 1917 XHCIEvent ev = { ER_TRANSFER }; 1918 ev.ccode = epctx->type == ET_ISO_IN ? 1919 CC_RING_OVERRUN : CC_RING_UNDERRUN; 1920 ev.slotid = epctx->slotid; 1921 ev.epid = epctx->epid; 1922 ev.ptr = epctx->ring.dequeue; 1923 xhci_event(xhci, &ev, xhci->slots[epctx->slotid-1].intr); 1924 } 1925 break; 1926 } 1927 xfer = xhci_ep_alloc_xfer(epctx, length); 1928 if (xfer == NULL) { 1929 break; 1930 } 1931 1932 for (i = 0; i < length; i++) { 1933 TRBType type; 1934 type = xhci_ring_fetch(xhci, ring, &xfer->trbs[i], NULL); 1935 if (!type) { 1936 xhci_die(xhci); 1937 xhci_ep_free_xfer(xfer); 1938 epctx->kick_active--; 1939 return; 1940 } 1941 } 1942 xfer->streamid = streamid; 1943 1944 if (epctx->epid == 1) { 1945 xhci_fire_ctl_transfer(xhci, xfer); 1946 } else { 1947 xhci_fire_transfer(xhci, xfer, epctx); 1948 } 1949 if (!xhci_slot_ok(xhci, epctx->slotid)) { 1950 /* surprise removal -> stop processing */ 1951 break; 1952 } 1953 if (xfer->complete) { 1954 /* update ring dequeue ptr */ 1955 xhci_set_ep_state(xhci, epctx, stctx, epctx->state); 1956 xhci_ep_free_xfer(xfer); 1957 xfer = NULL; 1958 } 1959 1960 if (epctx->state == EP_HALTED) { 1961 break; 1962 } 1963 if (xfer != NULL && xfer->running_retry) { 1964 DPRINTF("xhci: xfer nacked, stopping schedule\n"); 1965 epctx->retry = xfer; 1966 xhci_xfer_unmap(xfer); 1967 break; 1968 } 1969 if (count++ > TRANSFER_LIMIT) { 1970 trace_usb_xhci_enforced_limit("transfers"); 1971 break; 1972 } 1973 } 1974 epctx->kick_active--; 1975 1976 ep = xhci_epid_to_usbep(epctx); 1977 if (ep) { 1978 usb_device_flush_ep_queue(ep->dev, ep); 1979 } 1980 } 1981 1982 static TRBCCode xhci_enable_slot(XHCIState *xhci, unsigned int slotid) 1983 { 1984 trace_usb_xhci_slot_enable(slotid); 1985 assert(slotid >= 1 && slotid <= xhci->numslots); 1986 xhci->slots[slotid-1].enabled = 1; 1987 xhci->slots[slotid-1].uport = NULL; 1988 memset(xhci->slots[slotid-1].eps, 0, sizeof(XHCIEPContext*)*31); 1989 1990 return CC_SUCCESS; 1991 } 1992 1993 static TRBCCode xhci_disable_slot(XHCIState *xhci, unsigned int slotid) 1994 { 1995 int i; 1996 1997 trace_usb_xhci_slot_disable(slotid); 1998 assert(slotid >= 1 && slotid <= xhci->numslots); 1999 2000 for (i = 1; i <= 31; i++) { 2001 if (xhci->slots[slotid-1].eps[i-1]) { 2002 xhci_disable_ep(xhci, slotid, i); 2003 } 2004 } 2005 2006 xhci->slots[slotid-1].enabled = 0; 2007 xhci->slots[slotid-1].addressed = 0; 2008 xhci->slots[slotid-1].uport = NULL; 2009 xhci->slots[slotid-1].intr = 0; 2010 return CC_SUCCESS; 2011 } 2012 2013 static USBPort *xhci_lookup_uport(XHCIState *xhci, uint32_t *slot_ctx) 2014 { 2015 USBPort *uport; 2016 char path[32]; 2017 int i, pos, port; 2018 2019 port = (slot_ctx[1]>>16) & 0xFF; 2020 if (port < 1 || port > xhci->numports) { 2021 return NULL; 2022 } 2023 port = xhci->ports[port-1].uport->index+1; 2024 pos = snprintf(path, sizeof(path), "%d", port); 2025 for (i = 0; i < 5; i++) { 2026 port = (slot_ctx[0] >> 4*i) & 0x0f; 2027 if (!port) { 2028 break; 2029 } 2030 pos += snprintf(path + pos, sizeof(path) - pos, ".%d", port); 2031 } 2032 2033 QTAILQ_FOREACH(uport, &xhci->bus.used, next) { 2034 if (strcmp(uport->path, path) == 0) { 2035 return uport; 2036 } 2037 } 2038 return NULL; 2039 } 2040 2041 static TRBCCode xhci_address_slot(XHCIState *xhci, unsigned int slotid, 2042 uint64_t pictx, bool bsr) 2043 { 2044 XHCISlot *slot; 2045 USBPort *uport; 2046 USBDevice *dev; 2047 dma_addr_t ictx, octx, dcbaap; 2048 uint64_t poctx; 2049 uint32_t ictl_ctx[2]; 2050 uint32_t slot_ctx[4]; 2051 uint32_t ep0_ctx[5]; 2052 int i; 2053 TRBCCode res; 2054 2055 assert(slotid >= 1 && slotid <= xhci->numslots); 2056 2057 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high); 2058 poctx = ldq_le_dma(xhci->as, dcbaap + 8 * slotid); 2059 ictx = xhci_mask64(pictx); 2060 octx = xhci_mask64(poctx); 2061 2062 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); 2063 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); 2064 2065 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); 2066 2067 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] != 0x3) { 2068 DPRINTF("xhci: invalid input context control %08x %08x\n", 2069 ictl_ctx[0], ictl_ctx[1]); 2070 return CC_TRB_ERROR; 2071 } 2072 2073 xhci_dma_read_u32s(xhci, ictx+32, slot_ctx, sizeof(slot_ctx)); 2074 xhci_dma_read_u32s(xhci, ictx+64, ep0_ctx, sizeof(ep0_ctx)); 2075 2076 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n", 2077 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2078 2079 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n", 2080 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); 2081 2082 uport = xhci_lookup_uport(xhci, slot_ctx); 2083 if (uport == NULL) { 2084 DPRINTF("xhci: port not found\n"); 2085 return CC_TRB_ERROR; 2086 } 2087 trace_usb_xhci_slot_address(slotid, uport->path); 2088 2089 dev = uport->dev; 2090 if (!dev || !dev->attached) { 2091 DPRINTF("xhci: port %s not connected\n", uport->path); 2092 return CC_USB_TRANSACTION_ERROR; 2093 } 2094 2095 for (i = 0; i < xhci->numslots; i++) { 2096 if (i == slotid-1) { 2097 continue; 2098 } 2099 if (xhci->slots[i].uport == uport) { 2100 DPRINTF("xhci: port %s already assigned to slot %d\n", 2101 uport->path, i+1); 2102 return CC_TRB_ERROR; 2103 } 2104 } 2105 2106 slot = &xhci->slots[slotid-1]; 2107 slot->uport = uport; 2108 slot->ctx = octx; 2109 slot->intr = get_field(slot_ctx[2], TRB_INTR); 2110 2111 /* Make sure device is in USB_STATE_DEFAULT state */ 2112 usb_device_reset(dev); 2113 if (bsr) { 2114 slot_ctx[3] = SLOT_DEFAULT << SLOT_STATE_SHIFT; 2115 } else { 2116 USBPacket p; 2117 uint8_t buf[1]; 2118 2119 slot_ctx[3] = (SLOT_ADDRESSED << SLOT_STATE_SHIFT) | slotid; 2120 memset(&p, 0, sizeof(p)); 2121 usb_packet_addbuf(&p, buf, sizeof(buf)); 2122 usb_packet_setup(&p, USB_TOKEN_OUT, 2123 usb_ep_get(dev, USB_TOKEN_OUT, 0), 0, 2124 0, false, false); 2125 usb_device_handle_control(dev, &p, 2126 DeviceOutRequest | USB_REQ_SET_ADDRESS, 2127 slotid, 0, 0, NULL); 2128 assert(p.status != USB_RET_ASYNC); 2129 usb_packet_cleanup(&p); 2130 } 2131 2132 res = xhci_enable_ep(xhci, slotid, 1, octx+32, ep0_ctx); 2133 2134 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", 2135 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2136 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n", 2137 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); 2138 2139 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2140 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); 2141 2142 xhci->slots[slotid-1].addressed = 1; 2143 return res; 2144 } 2145 2146 2147 static TRBCCode xhci_configure_slot(XHCIState *xhci, unsigned int slotid, 2148 uint64_t pictx, bool dc) 2149 { 2150 dma_addr_t ictx, octx; 2151 uint32_t ictl_ctx[2]; 2152 uint32_t slot_ctx[4]; 2153 uint32_t islot_ctx[4]; 2154 uint32_t ep_ctx[5]; 2155 int i; 2156 TRBCCode res; 2157 2158 trace_usb_xhci_slot_configure(slotid); 2159 assert(slotid >= 1 && slotid <= xhci->numslots); 2160 2161 ictx = xhci_mask64(pictx); 2162 octx = xhci->slots[slotid-1].ctx; 2163 2164 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); 2165 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); 2166 2167 if (dc) { 2168 for (i = 2; i <= 31; i++) { 2169 if (xhci->slots[slotid-1].eps[i-1]) { 2170 xhci_disable_ep(xhci, slotid, i); 2171 } 2172 } 2173 2174 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2175 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); 2176 slot_ctx[3] |= SLOT_ADDRESSED << SLOT_STATE_SHIFT; 2177 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", 2178 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2179 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2180 2181 return CC_SUCCESS; 2182 } 2183 2184 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); 2185 2186 if ((ictl_ctx[0] & 0x3) != 0x0 || (ictl_ctx[1] & 0x3) != 0x1) { 2187 DPRINTF("xhci: invalid input context control %08x %08x\n", 2188 ictl_ctx[0], ictl_ctx[1]); 2189 return CC_TRB_ERROR; 2190 } 2191 2192 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx)); 2193 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2194 2195 if (SLOT_STATE(slot_ctx[3]) < SLOT_ADDRESSED) { 2196 DPRINTF("xhci: invalid slot state %08x\n", slot_ctx[3]); 2197 return CC_CONTEXT_STATE_ERROR; 2198 } 2199 2200 xhci_free_device_streams(xhci, slotid, ictl_ctx[0] | ictl_ctx[1]); 2201 2202 for (i = 2; i <= 31; i++) { 2203 if (ictl_ctx[0] & (1<<i)) { 2204 xhci_disable_ep(xhci, slotid, i); 2205 } 2206 if (ictl_ctx[1] & (1<<i)) { 2207 xhci_dma_read_u32s(xhci, ictx+32+(32*i), ep_ctx, sizeof(ep_ctx)); 2208 DPRINTF("xhci: input ep%d.%d context: %08x %08x %08x %08x %08x\n", 2209 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2], 2210 ep_ctx[3], ep_ctx[4]); 2211 xhci_disable_ep(xhci, slotid, i); 2212 res = xhci_enable_ep(xhci, slotid, i, octx+(32*i), ep_ctx); 2213 if (res != CC_SUCCESS) { 2214 return res; 2215 } 2216 DPRINTF("xhci: output ep%d.%d context: %08x %08x %08x %08x %08x\n", 2217 i/2, i%2, ep_ctx[0], ep_ctx[1], ep_ctx[2], 2218 ep_ctx[3], ep_ctx[4]); 2219 xhci_dma_write_u32s(xhci, octx+(32*i), ep_ctx, sizeof(ep_ctx)); 2220 } 2221 } 2222 2223 res = xhci_alloc_device_streams(xhci, slotid, ictl_ctx[1]); 2224 if (res != CC_SUCCESS) { 2225 for (i = 2; i <= 31; i++) { 2226 if (ictl_ctx[1] & (1u << i)) { 2227 xhci_disable_ep(xhci, slotid, i); 2228 } 2229 } 2230 return res; 2231 } 2232 2233 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); 2234 slot_ctx[3] |= SLOT_CONFIGURED << SLOT_STATE_SHIFT; 2235 slot_ctx[0] &= ~(SLOT_CONTEXT_ENTRIES_MASK << SLOT_CONTEXT_ENTRIES_SHIFT); 2236 slot_ctx[0] |= islot_ctx[0] & (SLOT_CONTEXT_ENTRIES_MASK << 2237 SLOT_CONTEXT_ENTRIES_SHIFT); 2238 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", 2239 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2240 2241 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2242 2243 return CC_SUCCESS; 2244 } 2245 2246 2247 static TRBCCode xhci_evaluate_slot(XHCIState *xhci, unsigned int slotid, 2248 uint64_t pictx) 2249 { 2250 dma_addr_t ictx, octx; 2251 uint32_t ictl_ctx[2]; 2252 uint32_t iep0_ctx[5]; 2253 uint32_t ep0_ctx[5]; 2254 uint32_t islot_ctx[4]; 2255 uint32_t slot_ctx[4]; 2256 2257 trace_usb_xhci_slot_evaluate(slotid); 2258 assert(slotid >= 1 && slotid <= xhci->numslots); 2259 2260 ictx = xhci_mask64(pictx); 2261 octx = xhci->slots[slotid-1].ctx; 2262 2263 DPRINTF("xhci: input context at "DMA_ADDR_FMT"\n", ictx); 2264 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); 2265 2266 xhci_dma_read_u32s(xhci, ictx, ictl_ctx, sizeof(ictl_ctx)); 2267 2268 if (ictl_ctx[0] != 0x0 || ictl_ctx[1] & ~0x3) { 2269 DPRINTF("xhci: invalid input context control %08x %08x\n", 2270 ictl_ctx[0], ictl_ctx[1]); 2271 return CC_TRB_ERROR; 2272 } 2273 2274 if (ictl_ctx[1] & 0x1) { 2275 xhci_dma_read_u32s(xhci, ictx+32, islot_ctx, sizeof(islot_ctx)); 2276 2277 DPRINTF("xhci: input slot context: %08x %08x %08x %08x\n", 2278 islot_ctx[0], islot_ctx[1], islot_ctx[2], islot_ctx[3]); 2279 2280 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2281 2282 slot_ctx[1] &= ~0xFFFF; /* max exit latency */ 2283 slot_ctx[1] |= islot_ctx[1] & 0xFFFF; 2284 /* update interrupter target field */ 2285 xhci->slots[slotid-1].intr = get_field(islot_ctx[2], TRB_INTR); 2286 set_field(&slot_ctx[2], xhci->slots[slotid-1].intr, TRB_INTR); 2287 2288 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", 2289 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2290 2291 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2292 } 2293 2294 if (ictl_ctx[1] & 0x2) { 2295 xhci_dma_read_u32s(xhci, ictx+64, iep0_ctx, sizeof(iep0_ctx)); 2296 2297 DPRINTF("xhci: input ep0 context: %08x %08x %08x %08x %08x\n", 2298 iep0_ctx[0], iep0_ctx[1], iep0_ctx[2], 2299 iep0_ctx[3], iep0_ctx[4]); 2300 2301 xhci_dma_read_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); 2302 2303 ep0_ctx[1] &= ~0xFFFF0000; /* max packet size*/ 2304 ep0_ctx[1] |= iep0_ctx[1] & 0xFFFF0000; 2305 2306 DPRINTF("xhci: output ep0 context: %08x %08x %08x %08x %08x\n", 2307 ep0_ctx[0], ep0_ctx[1], ep0_ctx[2], ep0_ctx[3], ep0_ctx[4]); 2308 2309 xhci_dma_write_u32s(xhci, octx+32, ep0_ctx, sizeof(ep0_ctx)); 2310 } 2311 2312 return CC_SUCCESS; 2313 } 2314 2315 static TRBCCode xhci_reset_slot(XHCIState *xhci, unsigned int slotid) 2316 { 2317 uint32_t slot_ctx[4]; 2318 dma_addr_t octx; 2319 int i; 2320 2321 trace_usb_xhci_slot_reset(slotid); 2322 assert(slotid >= 1 && slotid <= xhci->numslots); 2323 2324 octx = xhci->slots[slotid-1].ctx; 2325 2326 DPRINTF("xhci: output context at "DMA_ADDR_FMT"\n", octx); 2327 2328 for (i = 2; i <= 31; i++) { 2329 if (xhci->slots[slotid-1].eps[i-1]) { 2330 xhci_disable_ep(xhci, slotid, i); 2331 } 2332 } 2333 2334 xhci_dma_read_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2335 slot_ctx[3] &= ~(SLOT_STATE_MASK << SLOT_STATE_SHIFT); 2336 slot_ctx[3] |= SLOT_DEFAULT << SLOT_STATE_SHIFT; 2337 DPRINTF("xhci: output slot context: %08x %08x %08x %08x\n", 2338 slot_ctx[0], slot_ctx[1], slot_ctx[2], slot_ctx[3]); 2339 xhci_dma_write_u32s(xhci, octx, slot_ctx, sizeof(slot_ctx)); 2340 2341 return CC_SUCCESS; 2342 } 2343 2344 static unsigned int xhci_get_slot(XHCIState *xhci, XHCIEvent *event, XHCITRB *trb) 2345 { 2346 unsigned int slotid; 2347 slotid = (trb->control >> TRB_CR_SLOTID_SHIFT) & TRB_CR_SLOTID_MASK; 2348 if (slotid < 1 || slotid > xhci->numslots) { 2349 DPRINTF("xhci: bad slot id %d\n", slotid); 2350 event->ccode = CC_TRB_ERROR; 2351 return 0; 2352 } else if (!xhci->slots[slotid-1].enabled) { 2353 DPRINTF("xhci: slot id %d not enabled\n", slotid); 2354 event->ccode = CC_SLOT_NOT_ENABLED_ERROR; 2355 return 0; 2356 } 2357 return slotid; 2358 } 2359 2360 /* cleanup slot state on usb device detach */ 2361 static void xhci_detach_slot(XHCIState *xhci, USBPort *uport) 2362 { 2363 int slot, ep; 2364 2365 for (slot = 0; slot < xhci->numslots; slot++) { 2366 if (xhci->slots[slot].uport == uport) { 2367 break; 2368 } 2369 } 2370 if (slot == xhci->numslots) { 2371 return; 2372 } 2373 2374 for (ep = 0; ep < 31; ep++) { 2375 if (xhci->slots[slot].eps[ep]) { 2376 xhci_ep_nuke_xfers(xhci, slot + 1, ep + 1, 0); 2377 } 2378 } 2379 xhci->slots[slot].uport = NULL; 2380 } 2381 2382 static TRBCCode xhci_get_port_bandwidth(XHCIState *xhci, uint64_t pctx) 2383 { 2384 dma_addr_t ctx; 2385 uint8_t bw_ctx[xhci->numports+1]; 2386 2387 DPRINTF("xhci_get_port_bandwidth()\n"); 2388 2389 ctx = xhci_mask64(pctx); 2390 2391 DPRINTF("xhci: bandwidth context at "DMA_ADDR_FMT"\n", ctx); 2392 2393 /* TODO: actually implement real values here */ 2394 bw_ctx[0] = 0; 2395 memset(&bw_ctx[1], 80, xhci->numports); /* 80% */ 2396 dma_memory_write(xhci->as, ctx, bw_ctx, sizeof(bw_ctx)); 2397 2398 return CC_SUCCESS; 2399 } 2400 2401 static uint32_t rotl(uint32_t v, unsigned count) 2402 { 2403 count &= 31; 2404 return (v << count) | (v >> (32 - count)); 2405 } 2406 2407 2408 static uint32_t xhci_nec_challenge(uint32_t hi, uint32_t lo) 2409 { 2410 uint32_t val; 2411 val = rotl(lo - 0x49434878, 32 - ((hi>>8) & 0x1F)); 2412 val += rotl(lo + 0x49434878, hi & 0x1F); 2413 val -= rotl(hi ^ 0x49434878, (lo >> 16) & 0x1F); 2414 return ~val; 2415 } 2416 2417 static void xhci_process_commands(XHCIState *xhci) 2418 { 2419 XHCITRB trb; 2420 TRBType type; 2421 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_SUCCESS}; 2422 dma_addr_t addr; 2423 unsigned int i, slotid = 0, count = 0; 2424 2425 DPRINTF("xhci_process_commands()\n"); 2426 if (!xhci_running(xhci)) { 2427 DPRINTF("xhci_process_commands() called while xHC stopped or paused\n"); 2428 return; 2429 } 2430 2431 xhci->crcr_low |= CRCR_CRR; 2432 2433 while ((type = xhci_ring_fetch(xhci, &xhci->cmd_ring, &trb, &addr))) { 2434 event.ptr = addr; 2435 switch (type) { 2436 case CR_ENABLE_SLOT: 2437 for (i = 0; i < xhci->numslots; i++) { 2438 if (!xhci->slots[i].enabled) { 2439 break; 2440 } 2441 } 2442 if (i >= xhci->numslots) { 2443 DPRINTF("xhci: no device slots available\n"); 2444 event.ccode = CC_NO_SLOTS_ERROR; 2445 } else { 2446 slotid = i+1; 2447 event.ccode = xhci_enable_slot(xhci, slotid); 2448 } 2449 break; 2450 case CR_DISABLE_SLOT: 2451 slotid = xhci_get_slot(xhci, &event, &trb); 2452 if (slotid) { 2453 event.ccode = xhci_disable_slot(xhci, slotid); 2454 } 2455 break; 2456 case CR_ADDRESS_DEVICE: 2457 slotid = xhci_get_slot(xhci, &event, &trb); 2458 if (slotid) { 2459 event.ccode = xhci_address_slot(xhci, slotid, trb.parameter, 2460 trb.control & TRB_CR_BSR); 2461 } 2462 break; 2463 case CR_CONFIGURE_ENDPOINT: 2464 slotid = xhci_get_slot(xhci, &event, &trb); 2465 if (slotid) { 2466 event.ccode = xhci_configure_slot(xhci, slotid, trb.parameter, 2467 trb.control & TRB_CR_DC); 2468 } 2469 break; 2470 case CR_EVALUATE_CONTEXT: 2471 slotid = xhci_get_slot(xhci, &event, &trb); 2472 if (slotid) { 2473 event.ccode = xhci_evaluate_slot(xhci, slotid, trb.parameter); 2474 } 2475 break; 2476 case CR_STOP_ENDPOINT: 2477 slotid = xhci_get_slot(xhci, &event, &trb); 2478 if (slotid) { 2479 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) 2480 & TRB_CR_EPID_MASK; 2481 event.ccode = xhci_stop_ep(xhci, slotid, epid); 2482 } 2483 break; 2484 case CR_RESET_ENDPOINT: 2485 slotid = xhci_get_slot(xhci, &event, &trb); 2486 if (slotid) { 2487 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) 2488 & TRB_CR_EPID_MASK; 2489 event.ccode = xhci_reset_ep(xhci, slotid, epid); 2490 } 2491 break; 2492 case CR_SET_TR_DEQUEUE: 2493 slotid = xhci_get_slot(xhci, &event, &trb); 2494 if (slotid) { 2495 unsigned int epid = (trb.control >> TRB_CR_EPID_SHIFT) 2496 & TRB_CR_EPID_MASK; 2497 unsigned int streamid = (trb.status >> 16) & 0xffff; 2498 event.ccode = xhci_set_ep_dequeue(xhci, slotid, 2499 epid, streamid, 2500 trb.parameter); 2501 } 2502 break; 2503 case CR_RESET_DEVICE: 2504 slotid = xhci_get_slot(xhci, &event, &trb); 2505 if (slotid) { 2506 event.ccode = xhci_reset_slot(xhci, slotid); 2507 } 2508 break; 2509 case CR_GET_PORT_BANDWIDTH: 2510 event.ccode = xhci_get_port_bandwidth(xhci, trb.parameter); 2511 break; 2512 case CR_NOOP: 2513 event.ccode = CC_SUCCESS; 2514 break; 2515 case CR_VENDOR_NEC_FIRMWARE_REVISION: 2516 if (xhci->nec_quirks) { 2517 event.type = 48; /* NEC reply */ 2518 event.length = 0x3025; 2519 } else { 2520 event.ccode = CC_TRB_ERROR; 2521 } 2522 break; 2523 case CR_VENDOR_NEC_CHALLENGE_RESPONSE: 2524 if (xhci->nec_quirks) { 2525 uint32_t chi = trb.parameter >> 32; 2526 uint32_t clo = trb.parameter; 2527 uint32_t val = xhci_nec_challenge(chi, clo); 2528 event.length = val & 0xFFFF; 2529 event.epid = val >> 16; 2530 slotid = val >> 24; 2531 event.type = 48; /* NEC reply */ 2532 } else { 2533 event.ccode = CC_TRB_ERROR; 2534 } 2535 break; 2536 default: 2537 trace_usb_xhci_unimplemented("command", type); 2538 event.ccode = CC_TRB_ERROR; 2539 break; 2540 } 2541 event.slotid = slotid; 2542 xhci_event(xhci, &event, 0); 2543 2544 if (count++ > COMMAND_LIMIT) { 2545 trace_usb_xhci_enforced_limit("commands"); 2546 return; 2547 } 2548 } 2549 } 2550 2551 static bool xhci_port_have_device(XHCIPort *port) 2552 { 2553 if (!port->uport->dev || !port->uport->dev->attached) { 2554 return false; /* no device present */ 2555 } 2556 if (!((1 << port->uport->dev->speed) & port->speedmask)) { 2557 return false; /* speed mismatch */ 2558 } 2559 return true; 2560 } 2561 2562 static void xhci_port_notify(XHCIPort *port, uint32_t bits) 2563 { 2564 XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS, 2565 port->portnr << 24 }; 2566 2567 if ((port->portsc & bits) == bits) { 2568 return; 2569 } 2570 trace_usb_xhci_port_notify(port->portnr, bits); 2571 port->portsc |= bits; 2572 if (!xhci_running(port->xhci)) { 2573 return; 2574 } 2575 xhci_event(port->xhci, &ev, 0); 2576 } 2577 2578 static void xhci_port_update(XHCIPort *port, int is_detach) 2579 { 2580 uint32_t pls = PLS_RX_DETECT; 2581 2582 assert(port); 2583 port->portsc = PORTSC_PP; 2584 if (!is_detach && xhci_port_have_device(port)) { 2585 port->portsc |= PORTSC_CCS; 2586 switch (port->uport->dev->speed) { 2587 case USB_SPEED_LOW: 2588 port->portsc |= PORTSC_SPEED_LOW; 2589 pls = PLS_POLLING; 2590 break; 2591 case USB_SPEED_FULL: 2592 port->portsc |= PORTSC_SPEED_FULL; 2593 pls = PLS_POLLING; 2594 break; 2595 case USB_SPEED_HIGH: 2596 port->portsc |= PORTSC_SPEED_HIGH; 2597 pls = PLS_POLLING; 2598 break; 2599 case USB_SPEED_SUPER: 2600 port->portsc |= PORTSC_SPEED_SUPER; 2601 port->portsc |= PORTSC_PED; 2602 pls = PLS_U0; 2603 break; 2604 } 2605 } 2606 set_field(&port->portsc, pls, PORTSC_PLS); 2607 trace_usb_xhci_port_link(port->portnr, pls); 2608 xhci_port_notify(port, PORTSC_CSC); 2609 } 2610 2611 static void xhci_port_reset(XHCIPort *port, bool warm_reset) 2612 { 2613 trace_usb_xhci_port_reset(port->portnr, warm_reset); 2614 2615 if (!xhci_port_have_device(port)) { 2616 return; 2617 } 2618 2619 usb_device_reset(port->uport->dev); 2620 2621 switch (port->uport->dev->speed) { 2622 case USB_SPEED_SUPER: 2623 if (warm_reset) { 2624 port->portsc |= PORTSC_WRC; 2625 } 2626 /* fall through */ 2627 case USB_SPEED_LOW: 2628 case USB_SPEED_FULL: 2629 case USB_SPEED_HIGH: 2630 set_field(&port->portsc, PLS_U0, PORTSC_PLS); 2631 trace_usb_xhci_port_link(port->portnr, PLS_U0); 2632 port->portsc |= PORTSC_PED; 2633 break; 2634 } 2635 2636 port->portsc &= ~PORTSC_PR; 2637 xhci_port_notify(port, PORTSC_PRC); 2638 } 2639 2640 static void xhci_reset(DeviceState *dev) 2641 { 2642 XHCIState *xhci = XHCI(dev); 2643 int i; 2644 2645 trace_usb_xhci_reset(); 2646 if (!(xhci->usbsts & USBSTS_HCH)) { 2647 DPRINTF("xhci: reset while running!\n"); 2648 } 2649 2650 xhci->usbcmd = 0; 2651 xhci->usbsts = USBSTS_HCH; 2652 xhci->dnctrl = 0; 2653 xhci->crcr_low = 0; 2654 xhci->crcr_high = 0; 2655 xhci->dcbaap_low = 0; 2656 xhci->dcbaap_high = 0; 2657 xhci->config = 0; 2658 2659 for (i = 0; i < xhci->numslots; i++) { 2660 xhci_disable_slot(xhci, i+1); 2661 } 2662 2663 for (i = 0; i < xhci->numports; i++) { 2664 xhci_port_update(xhci->ports + i, 0); 2665 } 2666 2667 for (i = 0; i < xhci->numintrs; i++) { 2668 xhci->intr[i].iman = 0; 2669 xhci->intr[i].imod = 0; 2670 xhci->intr[i].erstsz = 0; 2671 xhci->intr[i].erstba_low = 0; 2672 xhci->intr[i].erstba_high = 0; 2673 xhci->intr[i].erdp_low = 0; 2674 xhci->intr[i].erdp_high = 0; 2675 2676 xhci->intr[i].er_ep_idx = 0; 2677 xhci->intr[i].er_pcs = 1; 2678 xhci->intr[i].ev_buffer_put = 0; 2679 xhci->intr[i].ev_buffer_get = 0; 2680 } 2681 2682 xhci->mfindex_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 2683 xhci_mfwrap_update(xhci); 2684 } 2685 2686 static uint64_t xhci_cap_read(void *ptr, hwaddr reg, unsigned size) 2687 { 2688 XHCIState *xhci = ptr; 2689 uint32_t ret; 2690 2691 switch (reg) { 2692 case 0x00: /* HCIVERSION, CAPLENGTH */ 2693 ret = 0x01000000 | LEN_CAP; 2694 break; 2695 case 0x04: /* HCSPARAMS 1 */ 2696 ret = ((xhci->numports_2+xhci->numports_3)<<24) 2697 | (xhci->numintrs<<8) | xhci->numslots; 2698 break; 2699 case 0x08: /* HCSPARAMS 2 */ 2700 ret = 0x0000000f; 2701 break; 2702 case 0x0c: /* HCSPARAMS 3 */ 2703 ret = 0x00000000; 2704 break; 2705 case 0x10: /* HCCPARAMS */ 2706 if (sizeof(dma_addr_t) == 4) { 2707 ret = 0x00080000 | (xhci->max_pstreams_mask << 12); 2708 } else { 2709 ret = 0x00080001 | (xhci->max_pstreams_mask << 12); 2710 } 2711 break; 2712 case 0x14: /* DBOFF */ 2713 ret = OFF_DOORBELL; 2714 break; 2715 case 0x18: /* RTSOFF */ 2716 ret = OFF_RUNTIME; 2717 break; 2718 2719 /* extended capabilities */ 2720 case 0x20: /* Supported Protocol:00 */ 2721 ret = 0x02000402; /* USB 2.0 */ 2722 break; 2723 case 0x24: /* Supported Protocol:04 */ 2724 ret = 0x20425355; /* "USB " */ 2725 break; 2726 case 0x28: /* Supported Protocol:08 */ 2727 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 2728 ret = (xhci->numports_2<<8) | (xhci->numports_3+1); 2729 } else { 2730 ret = (xhci->numports_2<<8) | 1; 2731 } 2732 break; 2733 case 0x2c: /* Supported Protocol:0c */ 2734 ret = 0x00000000; /* reserved */ 2735 break; 2736 case 0x30: /* Supported Protocol:00 */ 2737 ret = 0x03000002; /* USB 3.0 */ 2738 break; 2739 case 0x34: /* Supported Protocol:04 */ 2740 ret = 0x20425355; /* "USB " */ 2741 break; 2742 case 0x38: /* Supported Protocol:08 */ 2743 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 2744 ret = (xhci->numports_3<<8) | 1; 2745 } else { 2746 ret = (xhci->numports_3<<8) | (xhci->numports_2+1); 2747 } 2748 break; 2749 case 0x3c: /* Supported Protocol:0c */ 2750 ret = 0x00000000; /* reserved */ 2751 break; 2752 default: 2753 trace_usb_xhci_unimplemented("cap read", reg); 2754 ret = 0; 2755 } 2756 2757 trace_usb_xhci_cap_read(reg, ret); 2758 return ret; 2759 } 2760 2761 static uint64_t xhci_port_read(void *ptr, hwaddr reg, unsigned size) 2762 { 2763 XHCIPort *port = ptr; 2764 uint32_t ret; 2765 2766 switch (reg) { 2767 case 0x00: /* PORTSC */ 2768 ret = port->portsc; 2769 break; 2770 case 0x04: /* PORTPMSC */ 2771 case 0x08: /* PORTLI */ 2772 ret = 0; 2773 break; 2774 case 0x0c: /* reserved */ 2775 default: 2776 trace_usb_xhci_unimplemented("port read", reg); 2777 ret = 0; 2778 } 2779 2780 trace_usb_xhci_port_read(port->portnr, reg, ret); 2781 return ret; 2782 } 2783 2784 static void xhci_port_write(void *ptr, hwaddr reg, 2785 uint64_t val, unsigned size) 2786 { 2787 XHCIPort *port = ptr; 2788 uint32_t portsc, notify; 2789 2790 trace_usb_xhci_port_write(port->portnr, reg, val); 2791 2792 switch (reg) { 2793 case 0x00: /* PORTSC */ 2794 /* write-1-to-start bits */ 2795 if (val & PORTSC_WPR) { 2796 xhci_port_reset(port, true); 2797 break; 2798 } 2799 if (val & PORTSC_PR) { 2800 xhci_port_reset(port, false); 2801 break; 2802 } 2803 2804 portsc = port->portsc; 2805 notify = 0; 2806 /* write-1-to-clear bits*/ 2807 portsc &= ~(val & (PORTSC_CSC|PORTSC_PEC|PORTSC_WRC|PORTSC_OCC| 2808 PORTSC_PRC|PORTSC_PLC|PORTSC_CEC)); 2809 if (val & PORTSC_LWS) { 2810 /* overwrite PLS only when LWS=1 */ 2811 uint32_t old_pls = get_field(port->portsc, PORTSC_PLS); 2812 uint32_t new_pls = get_field(val, PORTSC_PLS); 2813 switch (new_pls) { 2814 case PLS_U0: 2815 if (old_pls != PLS_U0) { 2816 set_field(&portsc, new_pls, PORTSC_PLS); 2817 trace_usb_xhci_port_link(port->portnr, new_pls); 2818 notify = PORTSC_PLC; 2819 } 2820 break; 2821 case PLS_U3: 2822 if (old_pls < PLS_U3) { 2823 set_field(&portsc, new_pls, PORTSC_PLS); 2824 trace_usb_xhci_port_link(port->portnr, new_pls); 2825 } 2826 break; 2827 case PLS_RESUME: 2828 /* windows does this for some reason, don't spam stderr */ 2829 break; 2830 default: 2831 DPRINTF("%s: ignore pls write (old %d, new %d)\n", 2832 __func__, old_pls, new_pls); 2833 break; 2834 } 2835 } 2836 /* read/write bits */ 2837 portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE); 2838 portsc |= (val & (PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE)); 2839 port->portsc = portsc; 2840 if (notify) { 2841 xhci_port_notify(port, notify); 2842 } 2843 break; 2844 case 0x04: /* PORTPMSC */ 2845 case 0x08: /* PORTLI */ 2846 default: 2847 trace_usb_xhci_unimplemented("port write", reg); 2848 } 2849 } 2850 2851 static uint64_t xhci_oper_read(void *ptr, hwaddr reg, unsigned size) 2852 { 2853 XHCIState *xhci = ptr; 2854 uint32_t ret; 2855 2856 switch (reg) { 2857 case 0x00: /* USBCMD */ 2858 ret = xhci->usbcmd; 2859 break; 2860 case 0x04: /* USBSTS */ 2861 ret = xhci->usbsts; 2862 break; 2863 case 0x08: /* PAGESIZE */ 2864 ret = 1; /* 4KiB */ 2865 break; 2866 case 0x14: /* DNCTRL */ 2867 ret = xhci->dnctrl; 2868 break; 2869 case 0x18: /* CRCR low */ 2870 ret = xhci->crcr_low & ~0xe; 2871 break; 2872 case 0x1c: /* CRCR high */ 2873 ret = xhci->crcr_high; 2874 break; 2875 case 0x30: /* DCBAAP low */ 2876 ret = xhci->dcbaap_low; 2877 break; 2878 case 0x34: /* DCBAAP high */ 2879 ret = xhci->dcbaap_high; 2880 break; 2881 case 0x38: /* CONFIG */ 2882 ret = xhci->config; 2883 break; 2884 default: 2885 trace_usb_xhci_unimplemented("oper read", reg); 2886 ret = 0; 2887 } 2888 2889 trace_usb_xhci_oper_read(reg, ret); 2890 return ret; 2891 } 2892 2893 static void xhci_oper_write(void *ptr, hwaddr reg, 2894 uint64_t val, unsigned size) 2895 { 2896 XHCIState *xhci = XHCI(ptr); 2897 2898 trace_usb_xhci_oper_write(reg, val); 2899 2900 switch (reg) { 2901 case 0x00: /* USBCMD */ 2902 if ((val & USBCMD_RS) && !(xhci->usbcmd & USBCMD_RS)) { 2903 xhci_run(xhci); 2904 } else if (!(val & USBCMD_RS) && (xhci->usbcmd & USBCMD_RS)) { 2905 xhci_stop(xhci); 2906 } 2907 if (val & USBCMD_CSS) { 2908 /* save state */ 2909 xhci->usbsts &= ~USBSTS_SRE; 2910 } 2911 if (val & USBCMD_CRS) { 2912 /* restore state */ 2913 xhci->usbsts |= USBSTS_SRE; 2914 } 2915 xhci->usbcmd = val & 0xc0f; 2916 xhci_mfwrap_update(xhci); 2917 if (val & USBCMD_HCRST) { 2918 xhci_reset(DEVICE(xhci)); 2919 } 2920 xhci_intr_update(xhci, 0); 2921 break; 2922 2923 case 0x04: /* USBSTS */ 2924 /* these bits are write-1-to-clear */ 2925 xhci->usbsts &= ~(val & (USBSTS_HSE|USBSTS_EINT|USBSTS_PCD|USBSTS_SRE)); 2926 xhci_intr_update(xhci, 0); 2927 break; 2928 2929 case 0x14: /* DNCTRL */ 2930 xhci->dnctrl = val & 0xffff; 2931 break; 2932 case 0x18: /* CRCR low */ 2933 xhci->crcr_low = (val & 0xffffffcf) | (xhci->crcr_low & CRCR_CRR); 2934 break; 2935 case 0x1c: /* CRCR high */ 2936 xhci->crcr_high = val; 2937 if (xhci->crcr_low & (CRCR_CA|CRCR_CS) && (xhci->crcr_low & CRCR_CRR)) { 2938 XHCIEvent event = {ER_COMMAND_COMPLETE, CC_COMMAND_RING_STOPPED}; 2939 xhci->crcr_low &= ~CRCR_CRR; 2940 xhci_event(xhci, &event, 0); 2941 DPRINTF("xhci: command ring stopped (CRCR=%08x)\n", xhci->crcr_low); 2942 } else { 2943 dma_addr_t base = xhci_addr64(xhci->crcr_low & ~0x3f, val); 2944 xhci_ring_init(xhci, &xhci->cmd_ring, base); 2945 } 2946 xhci->crcr_low &= ~(CRCR_CA | CRCR_CS); 2947 break; 2948 case 0x30: /* DCBAAP low */ 2949 xhci->dcbaap_low = val & 0xffffffc0; 2950 break; 2951 case 0x34: /* DCBAAP high */ 2952 xhci->dcbaap_high = val; 2953 break; 2954 case 0x38: /* CONFIG */ 2955 xhci->config = val & 0xff; 2956 break; 2957 default: 2958 trace_usb_xhci_unimplemented("oper write", reg); 2959 } 2960 } 2961 2962 static uint64_t xhci_runtime_read(void *ptr, hwaddr reg, 2963 unsigned size) 2964 { 2965 XHCIState *xhci = ptr; 2966 uint32_t ret = 0; 2967 2968 if (reg < 0x20) { 2969 switch (reg) { 2970 case 0x00: /* MFINDEX */ 2971 ret = xhci_mfindex_get(xhci) & 0x3fff; 2972 break; 2973 default: 2974 trace_usb_xhci_unimplemented("runtime read", reg); 2975 break; 2976 } 2977 } else { 2978 int v = (reg - 0x20) / 0x20; 2979 XHCIInterrupter *intr = &xhci->intr[v]; 2980 switch (reg & 0x1f) { 2981 case 0x00: /* IMAN */ 2982 ret = intr->iman; 2983 break; 2984 case 0x04: /* IMOD */ 2985 ret = intr->imod; 2986 break; 2987 case 0x08: /* ERSTSZ */ 2988 ret = intr->erstsz; 2989 break; 2990 case 0x10: /* ERSTBA low */ 2991 ret = intr->erstba_low; 2992 break; 2993 case 0x14: /* ERSTBA high */ 2994 ret = intr->erstba_high; 2995 break; 2996 case 0x18: /* ERDP low */ 2997 ret = intr->erdp_low; 2998 break; 2999 case 0x1c: /* ERDP high */ 3000 ret = intr->erdp_high; 3001 break; 3002 } 3003 } 3004 3005 trace_usb_xhci_runtime_read(reg, ret); 3006 return ret; 3007 } 3008 3009 static void xhci_runtime_write(void *ptr, hwaddr reg, 3010 uint64_t val, unsigned size) 3011 { 3012 XHCIState *xhci = ptr; 3013 int v = (reg - 0x20) / 0x20; 3014 XHCIInterrupter *intr = &xhci->intr[v]; 3015 trace_usb_xhci_runtime_write(reg, val); 3016 3017 if (reg < 0x20) { 3018 trace_usb_xhci_unimplemented("runtime write", reg); 3019 return; 3020 } 3021 3022 switch (reg & 0x1f) { 3023 case 0x00: /* IMAN */ 3024 if (val & IMAN_IP) { 3025 intr->iman &= ~IMAN_IP; 3026 } 3027 intr->iman &= ~IMAN_IE; 3028 intr->iman |= val & IMAN_IE; 3029 xhci_intr_update(xhci, v); 3030 break; 3031 case 0x04: /* IMOD */ 3032 intr->imod = val; 3033 break; 3034 case 0x08: /* ERSTSZ */ 3035 intr->erstsz = val & 0xffff; 3036 break; 3037 case 0x10: /* ERSTBA low */ 3038 if (xhci->nec_quirks) { 3039 /* NEC driver bug: it doesn't align this to 64 bytes */ 3040 intr->erstba_low = val & 0xfffffff0; 3041 } else { 3042 intr->erstba_low = val & 0xffffffc0; 3043 } 3044 break; 3045 case 0x14: /* ERSTBA high */ 3046 intr->erstba_high = val; 3047 xhci_er_reset(xhci, v); 3048 break; 3049 case 0x18: /* ERDP low */ 3050 if (val & ERDP_EHB) { 3051 intr->erdp_low &= ~ERDP_EHB; 3052 } 3053 intr->erdp_low = (val & ~ERDP_EHB) | (intr->erdp_low & ERDP_EHB); 3054 if (val & ERDP_EHB) { 3055 dma_addr_t erdp = xhci_addr64(intr->erdp_low, intr->erdp_high); 3056 unsigned int dp_idx = (erdp - intr->er_start) / TRB_SIZE; 3057 if (erdp >= intr->er_start && 3058 erdp < (intr->er_start + TRB_SIZE * intr->er_size) && 3059 dp_idx != intr->er_ep_idx) { 3060 xhci_intr_raise(xhci, v); 3061 } 3062 } 3063 break; 3064 case 0x1c: /* ERDP high */ 3065 intr->erdp_high = val; 3066 break; 3067 default: 3068 trace_usb_xhci_unimplemented("oper write", reg); 3069 } 3070 } 3071 3072 static uint64_t xhci_doorbell_read(void *ptr, hwaddr reg, 3073 unsigned size) 3074 { 3075 /* doorbells always read as 0 */ 3076 trace_usb_xhci_doorbell_read(reg, 0); 3077 return 0; 3078 } 3079 3080 static void xhci_doorbell_write(void *ptr, hwaddr reg, 3081 uint64_t val, unsigned size) 3082 { 3083 XHCIState *xhci = ptr; 3084 unsigned int epid, streamid; 3085 3086 trace_usb_xhci_doorbell_write(reg, val); 3087 3088 if (!xhci_running(xhci)) { 3089 DPRINTF("xhci: wrote doorbell while xHC stopped or paused\n"); 3090 return; 3091 } 3092 3093 reg >>= 2; 3094 3095 if (reg == 0) { 3096 if (val == 0) { 3097 xhci_process_commands(xhci); 3098 } else { 3099 DPRINTF("xhci: bad doorbell 0 write: 0x%x\n", 3100 (uint32_t)val); 3101 } 3102 } else { 3103 epid = val & 0xff; 3104 streamid = (val >> 16) & 0xffff; 3105 if (reg > xhci->numslots) { 3106 DPRINTF("xhci: bad doorbell %d\n", (int)reg); 3107 } else if (epid == 0 || epid > 31) { 3108 DPRINTF("xhci: bad doorbell %d write: 0x%x\n", 3109 (int)reg, (uint32_t)val); 3110 } else { 3111 xhci_kick_ep(xhci, reg, epid, streamid); 3112 } 3113 } 3114 } 3115 3116 static void xhci_cap_write(void *opaque, hwaddr addr, uint64_t val, 3117 unsigned width) 3118 { 3119 /* nothing */ 3120 } 3121 3122 static const MemoryRegionOps xhci_cap_ops = { 3123 .read = xhci_cap_read, 3124 .write = xhci_cap_write, 3125 .valid.min_access_size = 1, 3126 .valid.max_access_size = 4, 3127 .impl.min_access_size = 4, 3128 .impl.max_access_size = 4, 3129 .endianness = DEVICE_LITTLE_ENDIAN, 3130 }; 3131 3132 static const MemoryRegionOps xhci_oper_ops = { 3133 .read = xhci_oper_read, 3134 .write = xhci_oper_write, 3135 .valid.min_access_size = 4, 3136 .valid.max_access_size = sizeof(dma_addr_t), 3137 .endianness = DEVICE_LITTLE_ENDIAN, 3138 }; 3139 3140 static const MemoryRegionOps xhci_port_ops = { 3141 .read = xhci_port_read, 3142 .write = xhci_port_write, 3143 .valid.min_access_size = 4, 3144 .valid.max_access_size = 4, 3145 .endianness = DEVICE_LITTLE_ENDIAN, 3146 }; 3147 3148 static const MemoryRegionOps xhci_runtime_ops = { 3149 .read = xhci_runtime_read, 3150 .write = xhci_runtime_write, 3151 .valid.min_access_size = 4, 3152 .valid.max_access_size = sizeof(dma_addr_t), 3153 .endianness = DEVICE_LITTLE_ENDIAN, 3154 }; 3155 3156 static const MemoryRegionOps xhci_doorbell_ops = { 3157 .read = xhci_doorbell_read, 3158 .write = xhci_doorbell_write, 3159 .valid.min_access_size = 4, 3160 .valid.max_access_size = 4, 3161 .endianness = DEVICE_LITTLE_ENDIAN, 3162 }; 3163 3164 static void xhci_attach(USBPort *usbport) 3165 { 3166 XHCIState *xhci = usbport->opaque; 3167 XHCIPort *port = xhci_lookup_port(xhci, usbport); 3168 3169 xhci_port_update(port, 0); 3170 } 3171 3172 static void xhci_detach(USBPort *usbport) 3173 { 3174 XHCIState *xhci = usbport->opaque; 3175 XHCIPort *port = xhci_lookup_port(xhci, usbport); 3176 3177 xhci_detach_slot(xhci, usbport); 3178 xhci_port_update(port, 1); 3179 } 3180 3181 static void xhci_wakeup(USBPort *usbport) 3182 { 3183 XHCIState *xhci = usbport->opaque; 3184 XHCIPort *port = xhci_lookup_port(xhci, usbport); 3185 3186 assert(port); 3187 if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) { 3188 return; 3189 } 3190 set_field(&port->portsc, PLS_RESUME, PORTSC_PLS); 3191 xhci_port_notify(port, PORTSC_PLC); 3192 } 3193 3194 static void xhci_complete(USBPort *port, USBPacket *packet) 3195 { 3196 XHCITransfer *xfer = container_of(packet, XHCITransfer, packet); 3197 3198 if (packet->status == USB_RET_REMOVE_FROM_QUEUE) { 3199 xhci_ep_nuke_one_xfer(xfer, 0); 3200 return; 3201 } 3202 xhci_try_complete_packet(xfer); 3203 xhci_kick_epctx(xfer->epctx, xfer->streamid); 3204 if (xfer->complete) { 3205 xhci_ep_free_xfer(xfer); 3206 } 3207 } 3208 3209 static void xhci_child_detach(USBPort *uport, USBDevice *child) 3210 { 3211 USBBus *bus = usb_bus_from_device(child); 3212 XHCIState *xhci = container_of(bus, XHCIState, bus); 3213 3214 xhci_detach_slot(xhci, child->port); 3215 } 3216 3217 static USBPortOps xhci_uport_ops = { 3218 .attach = xhci_attach, 3219 .detach = xhci_detach, 3220 .wakeup = xhci_wakeup, 3221 .complete = xhci_complete, 3222 .child_detach = xhci_child_detach, 3223 }; 3224 3225 static int xhci_find_epid(USBEndpoint *ep) 3226 { 3227 if (ep->nr == 0) { 3228 return 1; 3229 } 3230 if (ep->pid == USB_TOKEN_IN) { 3231 return ep->nr * 2 + 1; 3232 } else { 3233 return ep->nr * 2; 3234 } 3235 } 3236 3237 static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx) 3238 { 3239 USBPort *uport; 3240 uint32_t token; 3241 3242 if (!epctx) { 3243 return NULL; 3244 } 3245 uport = epctx->xhci->slots[epctx->slotid - 1].uport; 3246 if (!uport || !uport->dev) { 3247 return NULL; 3248 } 3249 token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT; 3250 return usb_ep_get(uport->dev, token, epctx->epid >> 1); 3251 } 3252 3253 static void xhci_wakeup_endpoint(USBBus *bus, USBEndpoint *ep, 3254 unsigned int stream) 3255 { 3256 XHCIState *xhci = container_of(bus, XHCIState, bus); 3257 int slotid; 3258 3259 DPRINTF("%s\n", __func__); 3260 slotid = ep->dev->addr; 3261 if (slotid == 0 || !xhci->slots[slotid-1].enabled) { 3262 DPRINTF("%s: oops, no slot for dev %d\n", __func__, ep->dev->addr); 3263 return; 3264 } 3265 xhci_kick_ep(xhci, slotid, xhci_find_epid(ep), stream); 3266 } 3267 3268 static USBBusOps xhci_bus_ops = { 3269 .wakeup_endpoint = xhci_wakeup_endpoint, 3270 }; 3271 3272 static void usb_xhci_init(XHCIState *xhci) 3273 { 3274 XHCIPort *port; 3275 unsigned int i, usbports, speedmask; 3276 3277 xhci->usbsts = USBSTS_HCH; 3278 3279 if (xhci->numports_2 > MAXPORTS_2) { 3280 xhci->numports_2 = MAXPORTS_2; 3281 } 3282 if (xhci->numports_3 > MAXPORTS_3) { 3283 xhci->numports_3 = MAXPORTS_3; 3284 } 3285 usbports = MAX(xhci->numports_2, xhci->numports_3); 3286 xhci->numports = xhci->numports_2 + xhci->numports_3; 3287 3288 usb_bus_new(&xhci->bus, sizeof(xhci->bus), &xhci_bus_ops, xhci->hostOpaque); 3289 3290 for (i = 0; i < usbports; i++) { 3291 speedmask = 0; 3292 if (i < xhci->numports_2) { 3293 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 3294 port = &xhci->ports[i + xhci->numports_3]; 3295 port->portnr = i + 1 + xhci->numports_3; 3296 } else { 3297 port = &xhci->ports[i]; 3298 port->portnr = i + 1; 3299 } 3300 port->uport = &xhci->uports[i]; 3301 port->speedmask = 3302 USB_SPEED_MASK_LOW | 3303 USB_SPEED_MASK_FULL | 3304 USB_SPEED_MASK_HIGH; 3305 assert(i < MAXPORTS); 3306 snprintf(port->name, sizeof(port->name), "usb2 port #%d", i+1); 3307 speedmask |= port->speedmask; 3308 } 3309 if (i < xhci->numports_3) { 3310 if (xhci_get_flag(xhci, XHCI_FLAG_SS_FIRST)) { 3311 port = &xhci->ports[i]; 3312 port->portnr = i + 1; 3313 } else { 3314 port = &xhci->ports[i + xhci->numports_2]; 3315 port->portnr = i + 1 + xhci->numports_2; 3316 } 3317 port->uport = &xhci->uports[i]; 3318 port->speedmask = USB_SPEED_MASK_SUPER; 3319 assert(i < MAXPORTS); 3320 snprintf(port->name, sizeof(port->name), "usb3 port #%d", i+1); 3321 speedmask |= port->speedmask; 3322 } 3323 usb_register_port(&xhci->bus, &xhci->uports[i], xhci, i, 3324 &xhci_uport_ops, speedmask); 3325 } 3326 } 3327 3328 static void usb_xhci_realize(DeviceState *dev, Error **errp) 3329 { 3330 int i; 3331 3332 XHCIState *xhci = XHCI(dev); 3333 3334 if (xhci->numintrs > MAXINTRS) { 3335 xhci->numintrs = MAXINTRS; 3336 } 3337 while (xhci->numintrs & (xhci->numintrs - 1)) { /* ! power of 2 */ 3338 xhci->numintrs++; 3339 } 3340 if (xhci->numintrs < 1) { 3341 xhci->numintrs = 1; 3342 } 3343 if (xhci->numslots > MAXSLOTS) { 3344 xhci->numslots = MAXSLOTS; 3345 } 3346 if (xhci->numslots < 1) { 3347 xhci->numslots = 1; 3348 } 3349 if (xhci_get_flag(xhci, XHCI_FLAG_ENABLE_STREAMS)) { 3350 xhci->max_pstreams_mask = 7; /* == 256 primary streams */ 3351 } else { 3352 xhci->max_pstreams_mask = 0; 3353 } 3354 3355 usb_xhci_init(xhci); 3356 xhci->mfwrap_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, xhci_mfwrap_timer, xhci); 3357 3358 memory_region_init(&xhci->mem, OBJECT(dev), "xhci", LEN_REGS); 3359 memory_region_init_io(&xhci->mem_cap, OBJECT(dev), &xhci_cap_ops, xhci, 3360 "capabilities", LEN_CAP); 3361 memory_region_init_io(&xhci->mem_oper, OBJECT(dev), &xhci_oper_ops, xhci, 3362 "operational", 0x400); 3363 memory_region_init_io(&xhci->mem_runtime, OBJECT(dev), &xhci_runtime_ops, 3364 xhci, "runtime", LEN_RUNTIME); 3365 memory_region_init_io(&xhci->mem_doorbell, OBJECT(dev), &xhci_doorbell_ops, 3366 xhci, "doorbell", LEN_DOORBELL); 3367 3368 memory_region_add_subregion(&xhci->mem, 0, &xhci->mem_cap); 3369 memory_region_add_subregion(&xhci->mem, OFF_OPER, &xhci->mem_oper); 3370 memory_region_add_subregion(&xhci->mem, OFF_RUNTIME, &xhci->mem_runtime); 3371 memory_region_add_subregion(&xhci->mem, OFF_DOORBELL, &xhci->mem_doorbell); 3372 3373 for (i = 0; i < xhci->numports; i++) { 3374 XHCIPort *port = &xhci->ports[i]; 3375 uint32_t offset = OFF_OPER + 0x400 + 0x10 * i; 3376 port->xhci = xhci; 3377 memory_region_init_io(&port->mem, OBJECT(dev), &xhci_port_ops, port, 3378 port->name, 0x10); 3379 memory_region_add_subregion(&xhci->mem, offset, &port->mem); 3380 } 3381 } 3382 3383 static void usb_xhci_unrealize(DeviceState *dev) 3384 { 3385 int i; 3386 XHCIState *xhci = XHCI(dev); 3387 3388 trace_usb_xhci_exit(); 3389 3390 for (i = 0; i < xhci->numslots; i++) { 3391 xhci_disable_slot(xhci, i + 1); 3392 } 3393 3394 if (xhci->mfwrap_timer) { 3395 timer_del(xhci->mfwrap_timer); 3396 timer_free(xhci->mfwrap_timer); 3397 xhci->mfwrap_timer = NULL; 3398 } 3399 3400 memory_region_del_subregion(&xhci->mem, &xhci->mem_cap); 3401 memory_region_del_subregion(&xhci->mem, &xhci->mem_oper); 3402 memory_region_del_subregion(&xhci->mem, &xhci->mem_runtime); 3403 memory_region_del_subregion(&xhci->mem, &xhci->mem_doorbell); 3404 3405 for (i = 0; i < xhci->numports; i++) { 3406 XHCIPort *port = &xhci->ports[i]; 3407 memory_region_del_subregion(&xhci->mem, &port->mem); 3408 } 3409 3410 usb_bus_release(&xhci->bus); 3411 } 3412 3413 static int usb_xhci_post_load(void *opaque, int version_id) 3414 { 3415 XHCIState *xhci = opaque; 3416 XHCISlot *slot; 3417 XHCIEPContext *epctx; 3418 dma_addr_t dcbaap, pctx; 3419 uint32_t slot_ctx[4]; 3420 uint32_t ep_ctx[5]; 3421 int slotid, epid, state; 3422 3423 dcbaap = xhci_addr64(xhci->dcbaap_low, xhci->dcbaap_high); 3424 3425 for (slotid = 1; slotid <= xhci->numslots; slotid++) { 3426 slot = &xhci->slots[slotid-1]; 3427 if (!slot->addressed) { 3428 continue; 3429 } 3430 slot->ctx = 3431 xhci_mask64(ldq_le_dma(xhci->as, dcbaap + 8 * slotid)); 3432 xhci_dma_read_u32s(xhci, slot->ctx, slot_ctx, sizeof(slot_ctx)); 3433 slot->uport = xhci_lookup_uport(xhci, slot_ctx); 3434 if (!slot->uport) { 3435 /* should not happen, but may trigger on guest bugs */ 3436 slot->enabled = 0; 3437 slot->addressed = 0; 3438 continue; 3439 } 3440 assert(slot->uport && slot->uport->dev); 3441 3442 for (epid = 1; epid <= 31; epid++) { 3443 pctx = slot->ctx + 32 * epid; 3444 xhci_dma_read_u32s(xhci, pctx, ep_ctx, sizeof(ep_ctx)); 3445 state = ep_ctx[0] & EP_STATE_MASK; 3446 if (state == EP_DISABLED) { 3447 continue; 3448 } 3449 epctx = xhci_alloc_epctx(xhci, slotid, epid); 3450 slot->eps[epid-1] = epctx; 3451 xhci_init_epctx(epctx, pctx, ep_ctx); 3452 epctx->state = state; 3453 if (state == EP_RUNNING) { 3454 /* kick endpoint after vmload is finished */ 3455 timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL)); 3456 } 3457 } 3458 } 3459 return 0; 3460 } 3461 3462 static const VMStateDescription vmstate_xhci_ring = { 3463 .name = "xhci-ring", 3464 .version_id = 1, 3465 .fields = (VMStateField[]) { 3466 VMSTATE_UINT64(dequeue, XHCIRing), 3467 VMSTATE_BOOL(ccs, XHCIRing), 3468 VMSTATE_END_OF_LIST() 3469 } 3470 }; 3471 3472 static const VMStateDescription vmstate_xhci_port = { 3473 .name = "xhci-port", 3474 .version_id = 1, 3475 .fields = (VMStateField[]) { 3476 VMSTATE_UINT32(portsc, XHCIPort), 3477 VMSTATE_END_OF_LIST() 3478 } 3479 }; 3480 3481 static const VMStateDescription vmstate_xhci_slot = { 3482 .name = "xhci-slot", 3483 .version_id = 1, 3484 .fields = (VMStateField[]) { 3485 VMSTATE_BOOL(enabled, XHCISlot), 3486 VMSTATE_BOOL(addressed, XHCISlot), 3487 VMSTATE_END_OF_LIST() 3488 } 3489 }; 3490 3491 static const VMStateDescription vmstate_xhci_event = { 3492 .name = "xhci-event", 3493 .version_id = 1, 3494 .fields = (VMStateField[]) { 3495 VMSTATE_UINT32(type, XHCIEvent), 3496 VMSTATE_UINT32(ccode, XHCIEvent), 3497 VMSTATE_UINT64(ptr, XHCIEvent), 3498 VMSTATE_UINT32(length, XHCIEvent), 3499 VMSTATE_UINT32(flags, XHCIEvent), 3500 VMSTATE_UINT8(slotid, XHCIEvent), 3501 VMSTATE_UINT8(epid, XHCIEvent), 3502 VMSTATE_END_OF_LIST() 3503 } 3504 }; 3505 3506 static bool xhci_er_full(void *opaque, int version_id) 3507 { 3508 return false; 3509 } 3510 3511 static const VMStateDescription vmstate_xhci_intr = { 3512 .name = "xhci-intr", 3513 .version_id = 1, 3514 .fields = (VMStateField[]) { 3515 /* registers */ 3516 VMSTATE_UINT32(iman, XHCIInterrupter), 3517 VMSTATE_UINT32(imod, XHCIInterrupter), 3518 VMSTATE_UINT32(erstsz, XHCIInterrupter), 3519 VMSTATE_UINT32(erstba_low, XHCIInterrupter), 3520 VMSTATE_UINT32(erstba_high, XHCIInterrupter), 3521 VMSTATE_UINT32(erdp_low, XHCIInterrupter), 3522 VMSTATE_UINT32(erdp_high, XHCIInterrupter), 3523 3524 /* state */ 3525 VMSTATE_BOOL(msix_used, XHCIInterrupter), 3526 VMSTATE_BOOL(er_pcs, XHCIInterrupter), 3527 VMSTATE_UINT64(er_start, XHCIInterrupter), 3528 VMSTATE_UINT32(er_size, XHCIInterrupter), 3529 VMSTATE_UINT32(er_ep_idx, XHCIInterrupter), 3530 3531 /* event queue (used if ring is full) */ 3532 VMSTATE_BOOL(er_full_unused, XHCIInterrupter), 3533 VMSTATE_UINT32_TEST(ev_buffer_put, XHCIInterrupter, xhci_er_full), 3534 VMSTATE_UINT32_TEST(ev_buffer_get, XHCIInterrupter, xhci_er_full), 3535 VMSTATE_STRUCT_ARRAY_TEST(ev_buffer, XHCIInterrupter, EV_QUEUE, 3536 xhci_er_full, 1, 3537 vmstate_xhci_event, XHCIEvent), 3538 3539 VMSTATE_END_OF_LIST() 3540 } 3541 }; 3542 3543 const VMStateDescription vmstate_xhci = { 3544 .name = "xhci-core", 3545 .version_id = 1, 3546 .post_load = usb_xhci_post_load, 3547 .fields = (VMStateField[]) { 3548 VMSTATE_STRUCT_VARRAY_UINT32(ports, XHCIState, numports, 1, 3549 vmstate_xhci_port, XHCIPort), 3550 VMSTATE_STRUCT_VARRAY_UINT32(slots, XHCIState, numslots, 1, 3551 vmstate_xhci_slot, XHCISlot), 3552 VMSTATE_STRUCT_VARRAY_UINT32(intr, XHCIState, numintrs, 1, 3553 vmstate_xhci_intr, XHCIInterrupter), 3554 3555 /* Operational Registers */ 3556 VMSTATE_UINT32(usbcmd, XHCIState), 3557 VMSTATE_UINT32(usbsts, XHCIState), 3558 VMSTATE_UINT32(dnctrl, XHCIState), 3559 VMSTATE_UINT32(crcr_low, XHCIState), 3560 VMSTATE_UINT32(crcr_high, XHCIState), 3561 VMSTATE_UINT32(dcbaap_low, XHCIState), 3562 VMSTATE_UINT32(dcbaap_high, XHCIState), 3563 VMSTATE_UINT32(config, XHCIState), 3564 3565 /* Runtime Registers & state */ 3566 VMSTATE_INT64(mfindex_start, XHCIState), 3567 VMSTATE_TIMER_PTR(mfwrap_timer, XHCIState), 3568 VMSTATE_STRUCT(cmd_ring, XHCIState, 1, vmstate_xhci_ring, XHCIRing), 3569 3570 VMSTATE_END_OF_LIST() 3571 } 3572 }; 3573 3574 static Property xhci_properties[] = { 3575 DEFINE_PROP_BIT("streams", XHCIState, flags, 3576 XHCI_FLAG_ENABLE_STREAMS, true), 3577 DEFINE_PROP_UINT32("p2", XHCIState, numports_2, 4), 3578 DEFINE_PROP_UINT32("p3", XHCIState, numports_3, 4), 3579 DEFINE_PROP_LINK("host", XHCIState, hostOpaque, TYPE_DEVICE, 3580 DeviceState *), 3581 DEFINE_PROP_END_OF_LIST(), 3582 }; 3583 3584 static void xhci_class_init(ObjectClass *klass, void *data) 3585 { 3586 DeviceClass *dc = DEVICE_CLASS(klass); 3587 3588 dc->realize = usb_xhci_realize; 3589 dc->unrealize = usb_xhci_unrealize; 3590 dc->reset = xhci_reset; 3591 device_class_set_props(dc, xhci_properties); 3592 dc->user_creatable = false; 3593 } 3594 3595 static const TypeInfo xhci_info = { 3596 .name = TYPE_XHCI, 3597 .parent = TYPE_DEVICE, 3598 .instance_size = sizeof(XHCIState), 3599 .class_init = xhci_class_init, 3600 }; 3601 3602 static void xhci_register_types(void) 3603 { 3604 type_register_static(&xhci_info); 3605 } 3606 3607 type_init(xhci_register_types) 3608