1 /* 2 * QEMU USB OHCI Emulation 3 * Copyright (c) 2004 Gianni Tedesco 4 * Copyright (c) 2006 CodeSourcery 5 * Copyright (c) 2006 Openedhand Ltd. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 19 * 20 * TODO: 21 * o Isochronous transfers 22 * o Allocate bandwidth in frames properly 23 * o Disable timers when nothing needs to be done, or remove timer usage 24 * all together. 25 * o BIOS work to boot from USB storage 26 */ 27 28 #include "qemu/osdep.h" 29 #include "hw/irq.h" 30 #include "qapi/error.h" 31 #include "qemu/module.h" 32 #include "qemu/timer.h" 33 #include "hw/usb.h" 34 #include "migration/vmstate.h" 35 #include "hw/sysbus.h" 36 #include "hw/qdev-dma.h" 37 #include "hw/qdev-properties.h" 38 #include "trace.h" 39 #include "hcd-ohci.h" 40 41 /* This causes frames to occur 1000x slower */ 42 /*#define OHCI_TIME_WARP 1*/ 43 44 #define ED_LINK_LIMIT 32 45 46 static int64_t usb_frame_time; 47 static int64_t usb_bit_time; 48 49 /* Host Controller Communications Area */ 50 struct ohci_hcca { 51 uint32_t intr[32]; 52 uint16_t frame, pad; 53 uint32_t done; 54 }; 55 #define HCCA_WRITEBACK_OFFSET offsetof(struct ohci_hcca, frame) 56 #define HCCA_WRITEBACK_SIZE 8 /* frame, pad, done */ 57 58 #define ED_WBACK_OFFSET offsetof(struct ohci_ed, head) 59 #define ED_WBACK_SIZE 4 60 61 /* Bitfields for the first word of an Endpoint Descriptor. */ 62 #define OHCI_ED_FA_SHIFT 0 63 #define OHCI_ED_FA_MASK (0x7f << OHCI_ED_FA_SHIFT) 64 #define OHCI_ED_EN_SHIFT 7 65 #define OHCI_ED_EN_MASK (0xf << OHCI_ED_EN_SHIFT) 66 #define OHCI_ED_D_SHIFT 11 67 #define OHCI_ED_D_MASK (3 << OHCI_ED_D_SHIFT) 68 #define OHCI_ED_S (1 << 13) 69 #define OHCI_ED_K (1 << 14) 70 #define OHCI_ED_F (1 << 15) 71 #define OHCI_ED_MPS_SHIFT 16 72 #define OHCI_ED_MPS_MASK (0x7ff << OHCI_ED_MPS_SHIFT) 73 74 /* Flags in the head field of an Endpoint Descriptor. */ 75 #define OHCI_ED_H 1 76 #define OHCI_ED_C 2 77 78 /* Bitfields for the first word of a Transfer Descriptor. */ 79 #define OHCI_TD_R (1 << 18) 80 #define OHCI_TD_DP_SHIFT 19 81 #define OHCI_TD_DP_MASK (3 << OHCI_TD_DP_SHIFT) 82 #define OHCI_TD_DI_SHIFT 21 83 #define OHCI_TD_DI_MASK (7 << OHCI_TD_DI_SHIFT) 84 #define OHCI_TD_T0 (1 << 24) 85 #define OHCI_TD_T1 (1 << 25) 86 #define OHCI_TD_EC_SHIFT 26 87 #define OHCI_TD_EC_MASK (3 << OHCI_TD_EC_SHIFT) 88 #define OHCI_TD_CC_SHIFT 28 89 #define OHCI_TD_CC_MASK (0xf << OHCI_TD_CC_SHIFT) 90 91 /* Bitfields for the first word of an Isochronous Transfer Descriptor. */ 92 /* CC & DI - same as in the General Transfer Descriptor */ 93 #define OHCI_TD_SF_SHIFT 0 94 #define OHCI_TD_SF_MASK (0xffff << OHCI_TD_SF_SHIFT) 95 #define OHCI_TD_FC_SHIFT 24 96 #define OHCI_TD_FC_MASK (7 << OHCI_TD_FC_SHIFT) 97 98 /* Isochronous Transfer Descriptor - Offset / PacketStatusWord */ 99 #define OHCI_TD_PSW_CC_SHIFT 12 100 #define OHCI_TD_PSW_CC_MASK (0xf << OHCI_TD_PSW_CC_SHIFT) 101 #define OHCI_TD_PSW_SIZE_SHIFT 0 102 #define OHCI_TD_PSW_SIZE_MASK (0xfff << OHCI_TD_PSW_SIZE_SHIFT) 103 104 #define OHCI_PAGE_MASK 0xfffff000 105 #define OHCI_OFFSET_MASK 0xfff 106 107 #define OHCI_DPTR_MASK 0xfffffff0 108 109 #define OHCI_BM(val, field) \ 110 (((val) & OHCI_##field##_MASK) >> OHCI_##field##_SHIFT) 111 112 #define OHCI_SET_BM(val, field, newval) do { \ 113 val &= ~OHCI_##field##_MASK; \ 114 val |= ((newval) << OHCI_##field##_SHIFT) & OHCI_##field##_MASK; \ 115 } while (0) 116 117 /* endpoint descriptor */ 118 struct ohci_ed { 119 uint32_t flags; 120 uint32_t tail; 121 uint32_t head; 122 uint32_t next; 123 }; 124 125 /* General transfer descriptor */ 126 struct ohci_td { 127 uint32_t flags; 128 uint32_t cbp; 129 uint32_t next; 130 uint32_t be; 131 }; 132 133 /* Isochronous transfer descriptor */ 134 struct ohci_iso_td { 135 uint32_t flags; 136 uint32_t bp; 137 uint32_t next; 138 uint32_t be; 139 uint16_t offset[8]; 140 }; 141 142 #define USB_HZ 12000000 143 144 /* OHCI Local stuff */ 145 #define OHCI_CTL_CBSR ((1 << 0) | (1 << 1)) 146 #define OHCI_CTL_PLE (1 << 2) 147 #define OHCI_CTL_IE (1 << 3) 148 #define OHCI_CTL_CLE (1 << 4) 149 #define OHCI_CTL_BLE (1 << 5) 150 #define OHCI_CTL_HCFS ((1 << 6) | (1 << 7)) 151 #define OHCI_USB_RESET 0x00 152 #define OHCI_USB_RESUME 0x40 153 #define OHCI_USB_OPERATIONAL 0x80 154 #define OHCI_USB_SUSPEND 0xc0 155 #define OHCI_CTL_IR (1 << 8) 156 #define OHCI_CTL_RWC (1 << 9) 157 #define OHCI_CTL_RWE (1 << 10) 158 159 #define OHCI_STATUS_HCR (1 << 0) 160 #define OHCI_STATUS_CLF (1 << 1) 161 #define OHCI_STATUS_BLF (1 << 2) 162 #define OHCI_STATUS_OCR (1 << 3) 163 #define OHCI_STATUS_SOC ((1 << 6) | (1 << 7)) 164 165 #define OHCI_INTR_SO (1U << 0) /* Scheduling overrun */ 166 #define OHCI_INTR_WD (1U << 1) /* HcDoneHead writeback */ 167 #define OHCI_INTR_SF (1U << 2) /* Start of frame */ 168 #define OHCI_INTR_RD (1U << 3) /* Resume detect */ 169 #define OHCI_INTR_UE (1U << 4) /* Unrecoverable error */ 170 #define OHCI_INTR_FNO (1U << 5) /* Frame number overflow */ 171 #define OHCI_INTR_RHSC (1U << 6) /* Root hub status change */ 172 #define OHCI_INTR_OC (1U << 30) /* Ownership change */ 173 #define OHCI_INTR_MIE (1U << 31) /* Master Interrupt Enable */ 174 175 #define OHCI_HCCA_SIZE 0x100 176 #define OHCI_HCCA_MASK 0xffffff00 177 178 #define OHCI_EDPTR_MASK 0xfffffff0 179 180 #define OHCI_FMI_FI 0x00003fff 181 #define OHCI_FMI_FSMPS 0xffff0000 182 #define OHCI_FMI_FIT 0x80000000 183 184 #define OHCI_FR_RT (1U << 31) 185 186 #define OHCI_LS_THRESH 0x628 187 188 #define OHCI_RHA_RW_MASK 0x00000000 /* Mask of supported features. */ 189 #define OHCI_RHA_PSM (1 << 8) 190 #define OHCI_RHA_NPS (1 << 9) 191 #define OHCI_RHA_DT (1 << 10) 192 #define OHCI_RHA_OCPM (1 << 11) 193 #define OHCI_RHA_NOCP (1 << 12) 194 #define OHCI_RHA_POTPGT_MASK 0xff000000 195 196 #define OHCI_RHS_LPS (1U << 0) 197 #define OHCI_RHS_OCI (1U << 1) 198 #define OHCI_RHS_DRWE (1U << 15) 199 #define OHCI_RHS_LPSC (1U << 16) 200 #define OHCI_RHS_OCIC (1U << 17) 201 #define OHCI_RHS_CRWE (1U << 31) 202 203 #define OHCI_PORT_CCS (1 << 0) 204 #define OHCI_PORT_PES (1 << 1) 205 #define OHCI_PORT_PSS (1 << 2) 206 #define OHCI_PORT_POCI (1 << 3) 207 #define OHCI_PORT_PRS (1 << 4) 208 #define OHCI_PORT_PPS (1 << 8) 209 #define OHCI_PORT_LSDA (1 << 9) 210 #define OHCI_PORT_CSC (1 << 16) 211 #define OHCI_PORT_PESC (1 << 17) 212 #define OHCI_PORT_PSSC (1 << 18) 213 #define OHCI_PORT_OCIC (1 << 19) 214 #define OHCI_PORT_PRSC (1 << 20) 215 #define OHCI_PORT_WTC (OHCI_PORT_CSC | OHCI_PORT_PESC | \ 216 OHCI_PORT_PSSC | OHCI_PORT_OCIC | \ 217 OHCI_PORT_PRSC) 218 #define OHCI_TD_DIR_SETUP 0x0 219 #define OHCI_TD_DIR_OUT 0x1 220 #define OHCI_TD_DIR_IN 0x2 221 #define OHCI_TD_DIR_RESERVED 0x3 222 223 #define OHCI_CC_NOERROR 0x0 224 #define OHCI_CC_CRC 0x1 225 #define OHCI_CC_BITSTUFFING 0x2 226 #define OHCI_CC_DATATOGGLEMISMATCH 0x3 227 #define OHCI_CC_STALL 0x4 228 #define OHCI_CC_DEVICENOTRESPONDING 0x5 229 #define OHCI_CC_PIDCHECKFAILURE 0x6 230 #define OHCI_CC_UNDEXPETEDPID 0x7 231 #define OHCI_CC_DATAOVERRUN 0x8 232 #define OHCI_CC_DATAUNDERRUN 0x9 233 #define OHCI_CC_BUFFEROVERRUN 0xc 234 #define OHCI_CC_BUFFERUNDERRUN 0xd 235 236 #define OHCI_HRESET_FSBIR (1 << 0) 237 238 static const char *ohci_reg_names[] = { 239 "HcRevision", "HcControl", "HcCommandStatus", "HcInterruptStatus", 240 "HcInterruptEnable", "HcInterruptDisable", "HcHCCA", "HcPeriodCurrentED", 241 "HcControlHeadED", "HcControlCurrentED", "HcBulkHeadED", "HcBulkCurrentED", 242 "HcDoneHead", "HcFmInterval", "HcFmRemaining", "HcFmNumber", 243 "HcPeriodicStart", "HcLSThreshold", "HcRhDescriptorA", "HcRhDescriptorB", 244 "HcRhStatus" 245 }; 246 247 static const char *ohci_reg_name(hwaddr addr) 248 { 249 if (addr >> 2 < ARRAY_SIZE(ohci_reg_names)) { 250 return ohci_reg_names[addr >> 2]; 251 } else { 252 return "<unknown>"; 253 } 254 } 255 256 static void ohci_die(OHCIState *ohci) 257 { 258 ohci->ohci_die(ohci); 259 } 260 261 /* Update IRQ levels */ 262 static inline void ohci_intr_update(OHCIState *ohci) 263 { 264 int level = 0; 265 266 if ((ohci->intr & OHCI_INTR_MIE) && 267 (ohci->intr_status & ohci->intr)) 268 level = 1; 269 270 qemu_set_irq(ohci->irq, level); 271 } 272 273 /* Set an interrupt */ 274 static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr) 275 { 276 ohci->intr_status |= intr; 277 ohci_intr_update(ohci); 278 } 279 280 static USBDevice *ohci_find_device(OHCIState *ohci, uint8_t addr) 281 { 282 USBDevice *dev; 283 int i; 284 285 for (i = 0; i < ohci->num_ports; i++) { 286 if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0) { 287 continue; 288 } 289 dev = usb_find_device(&ohci->rhport[i].port, addr); 290 if (dev != NULL) { 291 return dev; 292 } 293 } 294 return NULL; 295 } 296 297 void ohci_stop_endpoints(OHCIState *ohci) 298 { 299 USBDevice *dev; 300 int i, j; 301 302 if (ohci->async_td) { 303 usb_cancel_packet(&ohci->usb_packet); 304 ohci->async_td = 0; 305 } 306 for (i = 0; i < ohci->num_ports; i++) { 307 dev = ohci->rhport[i].port.dev; 308 if (dev && dev->attached) { 309 usb_device_ep_stopped(dev, &dev->ep_ctl); 310 for (j = 0; j < USB_MAX_ENDPOINTS; j++) { 311 usb_device_ep_stopped(dev, &dev->ep_in[j]); 312 usb_device_ep_stopped(dev, &dev->ep_out[j]); 313 } 314 } 315 } 316 } 317 318 static void ohci_roothub_reset(OHCIState *ohci) 319 { 320 OHCIPort *port; 321 int i; 322 323 ohci_bus_stop(ohci); 324 ohci->rhdesc_a = OHCI_RHA_NPS | ohci->num_ports; 325 ohci->rhdesc_b = 0x0; /* Impl. specific */ 326 ohci->rhstatus = 0; 327 328 for (i = 0; i < ohci->num_ports; i++) { 329 port = &ohci->rhport[i]; 330 port->ctrl = 0; 331 if (port->port.dev && port->port.dev->attached) { 332 usb_port_reset(&port->port); 333 } 334 } 335 ohci_stop_endpoints(ohci); 336 } 337 338 /* Reset the controller */ 339 static void ohci_soft_reset(OHCIState *ohci) 340 { 341 trace_usb_ohci_reset(ohci->name); 342 343 ohci_bus_stop(ohci); 344 ohci->ctl = (ohci->ctl & OHCI_CTL_IR) | OHCI_USB_SUSPEND; 345 ohci->old_ctl = 0; 346 ohci->status = 0; 347 ohci->intr_status = 0; 348 ohci->intr = OHCI_INTR_MIE; 349 350 ohci->hcca = 0; 351 ohci->ctrl_head = ohci->ctrl_cur = 0; 352 ohci->bulk_head = ohci->bulk_cur = 0; 353 ohci->per_cur = 0; 354 ohci->done = 0; 355 ohci->done_count = 7; 356 /* 357 * FSMPS is marked TBD in OCHI 1.0, what gives ffs? 358 * I took the value linux sets ... 359 */ 360 ohci->fsmps = 0x2778; 361 ohci->fi = 0x2edf; 362 ohci->fit = 0; 363 ohci->frt = 0; 364 ohci->frame_number = 0; 365 ohci->pstart = 0; 366 ohci->lst = OHCI_LS_THRESH; 367 } 368 369 void ohci_hard_reset(OHCIState *ohci) 370 { 371 ohci_soft_reset(ohci); 372 ohci->ctl = 0; 373 ohci_roothub_reset(ohci); 374 } 375 376 /* Get an array of dwords from main memory */ 377 static inline int get_dwords(OHCIState *ohci, 378 dma_addr_t addr, uint32_t *buf, int num) 379 { 380 int i; 381 382 addr += ohci->localmem_base; 383 384 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 385 if (dma_memory_read(ohci->as, addr, 386 buf, sizeof(*buf), MEMTXATTRS_UNSPECIFIED)) { 387 return -1; 388 } 389 *buf = le32_to_cpu(*buf); 390 } 391 392 return 0; 393 } 394 395 /* Put an array of dwords in to main memory */ 396 static inline int put_dwords(OHCIState *ohci, 397 dma_addr_t addr, uint32_t *buf, int num) 398 { 399 int i; 400 401 addr += ohci->localmem_base; 402 403 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 404 uint32_t tmp = cpu_to_le32(*buf); 405 if (dma_memory_write(ohci->as, addr, 406 &tmp, sizeof(tmp), MEMTXATTRS_UNSPECIFIED)) { 407 return -1; 408 } 409 } 410 411 return 0; 412 } 413 414 /* Get an array of words from main memory */ 415 static inline int get_words(OHCIState *ohci, 416 dma_addr_t addr, uint16_t *buf, int num) 417 { 418 int i; 419 420 addr += ohci->localmem_base; 421 422 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 423 if (dma_memory_read(ohci->as, addr, 424 buf, sizeof(*buf), MEMTXATTRS_UNSPECIFIED)) { 425 return -1; 426 } 427 *buf = le16_to_cpu(*buf); 428 } 429 430 return 0; 431 } 432 433 /* Put an array of words in to main memory */ 434 static inline int put_words(OHCIState *ohci, 435 dma_addr_t addr, uint16_t *buf, int num) 436 { 437 int i; 438 439 addr += ohci->localmem_base; 440 441 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 442 uint16_t tmp = cpu_to_le16(*buf); 443 if (dma_memory_write(ohci->as, addr, 444 &tmp, sizeof(tmp), MEMTXATTRS_UNSPECIFIED)) { 445 return -1; 446 } 447 } 448 449 return 0; 450 } 451 452 static inline int ohci_read_ed(OHCIState *ohci, 453 dma_addr_t addr, struct ohci_ed *ed) 454 { 455 return get_dwords(ohci, addr, (uint32_t *)ed, sizeof(*ed) >> 2); 456 } 457 458 static inline int ohci_read_td(OHCIState *ohci, 459 dma_addr_t addr, struct ohci_td *td) 460 { 461 return get_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2); 462 } 463 464 static inline int ohci_read_iso_td(OHCIState *ohci, 465 dma_addr_t addr, struct ohci_iso_td *td) 466 { 467 return get_dwords(ohci, addr, (uint32_t *)td, 4) || 468 get_words(ohci, addr + 16, td->offset, 8); 469 } 470 471 static inline int ohci_read_hcca(OHCIState *ohci, 472 dma_addr_t addr, struct ohci_hcca *hcca) 473 { 474 return dma_memory_read(ohci->as, addr + ohci->localmem_base, hcca, 475 sizeof(*hcca), MEMTXATTRS_UNSPECIFIED); 476 } 477 478 static inline int ohci_put_ed(OHCIState *ohci, 479 dma_addr_t addr, struct ohci_ed *ed) 480 { 481 /* 482 * ed->tail is under control of the HCD. 483 * Since just ed->head is changed by HC, just write back this 484 */ 485 return put_dwords(ohci, addr + ED_WBACK_OFFSET, 486 (uint32_t *)((char *)ed + ED_WBACK_OFFSET), 487 ED_WBACK_SIZE >> 2); 488 } 489 490 static inline int ohci_put_td(OHCIState *ohci, 491 dma_addr_t addr, struct ohci_td *td) 492 { 493 return put_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2); 494 } 495 496 static inline int ohci_put_iso_td(OHCIState *ohci, 497 dma_addr_t addr, struct ohci_iso_td *td) 498 { 499 return put_dwords(ohci, addr, (uint32_t *)td, 4) || 500 put_words(ohci, addr + 16, td->offset, 8); 501 } 502 503 static inline int ohci_put_hcca(OHCIState *ohci, 504 dma_addr_t addr, struct ohci_hcca *hcca) 505 { 506 return dma_memory_write(ohci->as, 507 addr + ohci->localmem_base + HCCA_WRITEBACK_OFFSET, 508 (char *)hcca + HCCA_WRITEBACK_OFFSET, 509 HCCA_WRITEBACK_SIZE, MEMTXATTRS_UNSPECIFIED); 510 } 511 512 /* Read/Write the contents of a TD from/to main memory. */ 513 static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td, 514 uint8_t *buf, int len, DMADirection dir) 515 { 516 dma_addr_t ptr, n; 517 518 ptr = td->cbp; 519 n = 0x1000 - (ptr & 0xfff); 520 if (n > len) { 521 n = len; 522 } 523 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 524 n, dir, MEMTXATTRS_UNSPECIFIED)) { 525 return -1; 526 } 527 if (n == len) { 528 return 0; 529 } 530 ptr = td->be & ~0xfffu; 531 buf += n; 532 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 533 len - n, dir, MEMTXATTRS_UNSPECIFIED)) { 534 return -1; 535 } 536 return 0; 537 } 538 539 /* Read/Write the contents of an ISO TD from/to main memory. */ 540 static int ohci_copy_iso_td(OHCIState *ohci, 541 uint32_t start_addr, uint32_t end_addr, 542 uint8_t *buf, int len, DMADirection dir) 543 { 544 dma_addr_t ptr, n; 545 546 ptr = start_addr; 547 n = 0x1000 - (ptr & 0xfff); 548 if (n > len) { 549 n = len; 550 } 551 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 552 n, dir, MEMTXATTRS_UNSPECIFIED)) { 553 return -1; 554 } 555 if (n == len) { 556 return 0; 557 } 558 ptr = end_addr & ~0xfffu; 559 buf += n; 560 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 561 len - n, dir, MEMTXATTRS_UNSPECIFIED)) { 562 return -1; 563 } 564 return 0; 565 } 566 567 #define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b))) 568 569 static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed) 570 { 571 int dir; 572 size_t len = 0; 573 const char *str = NULL; 574 int pid; 575 int ret; 576 int i; 577 USBDevice *dev; 578 USBEndpoint *ep; 579 USBPacket *pkt; 580 uint8_t buf[8192]; 581 bool int_req; 582 struct ohci_iso_td iso_td; 583 uint32_t addr; 584 uint16_t starting_frame; 585 int16_t relative_frame_number; 586 int frame_count; 587 uint32_t start_offset, next_offset, end_offset = 0; 588 uint32_t start_addr, end_addr; 589 590 addr = ed->head & OHCI_DPTR_MASK; 591 592 if (addr == 0) { 593 ohci_die(ohci); 594 return 1; 595 } 596 597 if (ohci_read_iso_td(ohci, addr, &iso_td)) { 598 trace_usb_ohci_iso_td_read_failed(addr); 599 ohci_die(ohci); 600 return 1; 601 } 602 603 starting_frame = OHCI_BM(iso_td.flags, TD_SF); 604 frame_count = OHCI_BM(iso_td.flags, TD_FC); 605 relative_frame_number = USUB(ohci->frame_number, starting_frame); 606 607 trace_usb_ohci_iso_td_head( 608 ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK, 609 iso_td.flags, iso_td.bp, iso_td.next, iso_td.be, 610 ohci->frame_number, starting_frame, 611 frame_count, relative_frame_number); 612 trace_usb_ohci_iso_td_head_offset( 613 iso_td.offset[0], iso_td.offset[1], 614 iso_td.offset[2], iso_td.offset[3], 615 iso_td.offset[4], iso_td.offset[5], 616 iso_td.offset[6], iso_td.offset[7]); 617 618 if (relative_frame_number < 0) { 619 trace_usb_ohci_iso_td_relative_frame_number_neg(relative_frame_number); 620 return 1; 621 } else if (relative_frame_number > frame_count) { 622 /* 623 * ISO TD expired - retire the TD to the Done Queue and continue with 624 * the next ISO TD of the same ED 625 */ 626 trace_usb_ohci_iso_td_relative_frame_number_big(relative_frame_number, 627 frame_count); 628 if (OHCI_CC_DATAOVERRUN == OHCI_BM(iso_td.flags, TD_CC)) { 629 /* avoid infinite loop */ 630 return 1; 631 } 632 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN); 633 ed->head &= ~OHCI_DPTR_MASK; 634 ed->head |= (iso_td.next & OHCI_DPTR_MASK); 635 iso_td.next = ohci->done; 636 ohci->done = addr; 637 i = OHCI_BM(iso_td.flags, TD_DI); 638 if (i < ohci->done_count) { 639 ohci->done_count = i; 640 } 641 if (ohci_put_iso_td(ohci, addr, &iso_td)) { 642 ohci_die(ohci); 643 return 1; 644 } 645 return 0; 646 } 647 648 dir = OHCI_BM(ed->flags, ED_D); 649 switch (dir) { 650 case OHCI_TD_DIR_IN: 651 str = "in"; 652 pid = USB_TOKEN_IN; 653 break; 654 case OHCI_TD_DIR_OUT: 655 str = "out"; 656 pid = USB_TOKEN_OUT; 657 break; 658 case OHCI_TD_DIR_SETUP: 659 str = "setup"; 660 pid = USB_TOKEN_SETUP; 661 break; 662 default: 663 trace_usb_ohci_iso_td_bad_direction(dir); 664 return 1; 665 } 666 667 if (!iso_td.bp || !iso_td.be) { 668 trace_usb_ohci_iso_td_bad_bp_be(iso_td.bp, iso_td.be); 669 return 1; 670 } 671 672 start_offset = iso_td.offset[relative_frame_number]; 673 if (relative_frame_number < frame_count) { 674 next_offset = iso_td.offset[relative_frame_number + 1]; 675 } else { 676 next_offset = iso_td.be; 677 } 678 679 if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) || 680 ((relative_frame_number < frame_count) && 681 !(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) { 682 trace_usb_ohci_iso_td_bad_cc_not_accessed(start_offset, next_offset); 683 return 1; 684 } 685 686 if ((relative_frame_number < frame_count) && (start_offset > next_offset)) { 687 trace_usb_ohci_iso_td_bad_cc_overrun(start_offset, next_offset); 688 return 1; 689 } 690 691 if ((start_offset & 0x1000) == 0) { 692 start_addr = (iso_td.bp & OHCI_PAGE_MASK) | 693 (start_offset & OHCI_OFFSET_MASK); 694 } else { 695 start_addr = (iso_td.be & OHCI_PAGE_MASK) | 696 (start_offset & OHCI_OFFSET_MASK); 697 } 698 699 if (relative_frame_number < frame_count) { 700 end_offset = next_offset - 1; 701 if ((end_offset & 0x1000) == 0) { 702 end_addr = (iso_td.bp & OHCI_PAGE_MASK) | 703 (end_offset & OHCI_OFFSET_MASK); 704 } else { 705 end_addr = (iso_td.be & OHCI_PAGE_MASK) | 706 (end_offset & OHCI_OFFSET_MASK); 707 } 708 } else { 709 /* Last packet in the ISO TD */ 710 end_addr = next_offset; 711 } 712 713 if (start_addr > end_addr) { 714 trace_usb_ohci_iso_td_bad_cc_overrun(start_addr, end_addr); 715 return 1; 716 } 717 718 if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) { 719 len = (end_addr & OHCI_OFFSET_MASK) + 0x1001 720 - (start_addr & OHCI_OFFSET_MASK); 721 } else { 722 len = end_addr - start_addr + 1; 723 } 724 if (len > sizeof(buf)) { 725 len = sizeof(buf); 726 } 727 728 if (len && dir != OHCI_TD_DIR_IN) { 729 if (ohci_copy_iso_td(ohci, start_addr, end_addr, buf, len, 730 DMA_DIRECTION_TO_DEVICE)) { 731 ohci_die(ohci); 732 return 1; 733 } 734 } 735 736 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA)); 737 if (dev == NULL) { 738 trace_usb_ohci_td_dev_error(); 739 return 1; 740 } 741 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN)); 742 pkt = g_new0(USBPacket, 1); 743 usb_packet_init(pkt); 744 int_req = relative_frame_number == frame_count && 745 OHCI_BM(iso_td.flags, TD_DI) == 0; 746 usb_packet_setup(pkt, pid, ep, 0, addr, false, int_req); 747 usb_packet_addbuf(pkt, buf, len); 748 usb_handle_packet(dev, pkt); 749 if (pkt->status == USB_RET_ASYNC) { 750 usb_device_flush_ep_queue(dev, ep); 751 g_free(pkt); 752 return 1; 753 } 754 if (pkt->status == USB_RET_SUCCESS) { 755 ret = pkt->actual_length; 756 } else { 757 ret = pkt->status; 758 } 759 g_free(pkt); 760 761 trace_usb_ohci_iso_td_so(start_offset, end_offset, start_addr, end_addr, 762 str, len, ret); 763 764 /* Writeback */ 765 if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) { 766 /* IN transfer succeeded */ 767 if (ohci_copy_iso_td(ohci, start_addr, end_addr, buf, ret, 768 DMA_DIRECTION_FROM_DEVICE)) { 769 ohci_die(ohci); 770 return 1; 771 } 772 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 773 OHCI_CC_NOERROR); 774 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret); 775 } else if (dir == OHCI_TD_DIR_OUT && ret == len) { 776 /* OUT transfer succeeded */ 777 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 778 OHCI_CC_NOERROR); 779 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0); 780 } else { 781 if (ret > (ssize_t) len) { 782 trace_usb_ohci_iso_td_data_overrun(ret, len); 783 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 784 OHCI_CC_DATAOVERRUN); 785 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 786 len); 787 } else if (ret >= 0) { 788 trace_usb_ohci_iso_td_data_underrun(ret); 789 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 790 OHCI_CC_DATAUNDERRUN); 791 } else { 792 switch (ret) { 793 case USB_RET_IOERROR: 794 case USB_RET_NODEV: 795 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 796 OHCI_CC_DEVICENOTRESPONDING); 797 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 798 0); 799 break; 800 case USB_RET_NAK: 801 case USB_RET_STALL: 802 trace_usb_ohci_iso_td_nak(ret); 803 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 804 OHCI_CC_STALL); 805 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 806 0); 807 break; 808 default: 809 trace_usb_ohci_iso_td_bad_response(ret); 810 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 811 OHCI_CC_UNDEXPETEDPID); 812 break; 813 } 814 } 815 } 816 817 if (relative_frame_number == frame_count) { 818 /* Last data packet of ISO TD - retire the TD to the Done Queue */ 819 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR); 820 ed->head &= ~OHCI_DPTR_MASK; 821 ed->head |= (iso_td.next & OHCI_DPTR_MASK); 822 iso_td.next = ohci->done; 823 ohci->done = addr; 824 i = OHCI_BM(iso_td.flags, TD_DI); 825 if (i < ohci->done_count) { 826 ohci->done_count = i; 827 } 828 } 829 if (ohci_put_iso_td(ohci, addr, &iso_td)) { 830 ohci_die(ohci); 831 } 832 return 1; 833 } 834 835 #define HEX_CHAR_PER_LINE 16 836 837 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len) 838 { 839 bool print16; 840 bool printall; 841 int i; 842 char tmp[3 * HEX_CHAR_PER_LINE + 1]; 843 char *p = tmp; 844 845 print16 = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_SHORT); 846 printall = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_FULL); 847 848 if (!printall && !print16) { 849 return; 850 } 851 852 for (i = 0; ; i++) { 853 if (i && (!(i % HEX_CHAR_PER_LINE) || (i == len))) { 854 if (!printall) { 855 trace_usb_ohci_td_pkt_short(msg, tmp); 856 break; 857 } 858 trace_usb_ohci_td_pkt_full(msg, tmp); 859 p = tmp; 860 *p = 0; 861 } 862 if (i == len) { 863 break; 864 } 865 866 p += sprintf(p, " %.2x", buf[i]); 867 } 868 } 869 870 /* 871 * Service a transport descriptor. 872 * Returns nonzero to terminate processing of this endpoint. 873 */ 874 static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed) 875 { 876 int dir; 877 size_t len = 0, pktlen = 0; 878 const char *str = NULL; 879 int pid; 880 int ret; 881 int i; 882 USBDevice *dev; 883 USBEndpoint *ep; 884 struct ohci_td td; 885 uint32_t addr; 886 int flag_r; 887 int completion; 888 889 addr = ed->head & OHCI_DPTR_MASK; 890 if (addr == 0) { 891 ohci_die(ohci); 892 return 1; 893 } 894 895 /* See if this TD has already been submitted to the device. */ 896 completion = (addr == ohci->async_td); 897 if (completion && !ohci->async_complete) { 898 trace_usb_ohci_td_skip_async(); 899 return 1; 900 } 901 if (ohci_read_td(ohci, addr, &td)) { 902 trace_usb_ohci_td_read_error(addr); 903 ohci_die(ohci); 904 return 1; 905 } 906 907 dir = OHCI_BM(ed->flags, ED_D); 908 switch (dir) { 909 case OHCI_TD_DIR_OUT: 910 case OHCI_TD_DIR_IN: 911 /* Same value. */ 912 break; 913 default: 914 dir = OHCI_BM(td.flags, TD_DP); 915 break; 916 } 917 918 switch (dir) { 919 case OHCI_TD_DIR_IN: 920 str = "in"; 921 pid = USB_TOKEN_IN; 922 break; 923 case OHCI_TD_DIR_OUT: 924 str = "out"; 925 pid = USB_TOKEN_OUT; 926 break; 927 case OHCI_TD_DIR_SETUP: 928 str = "setup"; 929 pid = USB_TOKEN_SETUP; 930 break; 931 default: 932 trace_usb_ohci_td_bad_direction(dir); 933 return 1; 934 } 935 if (td.cbp && td.be) { 936 if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) { 937 len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff); 938 } else { 939 if (td.cbp > td.be) { 940 trace_usb_ohci_iso_td_bad_cc_overrun(td.cbp, td.be); 941 ohci_die(ohci); 942 return 1; 943 } 944 len = (td.be - td.cbp) + 1; 945 } 946 if (len > sizeof(ohci->usb_buf)) { 947 len = sizeof(ohci->usb_buf); 948 } 949 950 pktlen = len; 951 if (len && dir != OHCI_TD_DIR_IN) { 952 /* The endpoint may not allow us to transfer it all now */ 953 pktlen = (ed->flags & OHCI_ED_MPS_MASK) >> OHCI_ED_MPS_SHIFT; 954 if (pktlen > len) { 955 pktlen = len; 956 } 957 if (!completion) { 958 if (ohci_copy_td(ohci, &td, ohci->usb_buf, pktlen, 959 DMA_DIRECTION_TO_DEVICE)) { 960 ohci_die(ohci); 961 } 962 } 963 } 964 } 965 966 flag_r = (td.flags & OHCI_TD_R) != 0; 967 trace_usb_ohci_td_pkt_hdr(addr, (int64_t)pktlen, (int64_t)len, str, 968 flag_r, td.cbp, td.be); 969 ohci_td_pkt("OUT", ohci->usb_buf, pktlen); 970 971 if (completion) { 972 ohci->async_td = 0; 973 ohci->async_complete = false; 974 } else { 975 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA)); 976 if (dev == NULL) { 977 trace_usb_ohci_td_dev_error(); 978 return 1; 979 } 980 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN)); 981 if (ohci->async_td) { 982 /* 983 * ??? The hardware should allow one active packet per 984 * endpoint. We only allow one active packet per controller. 985 * This should be sufficient as long as devices respond in a 986 * timely manner. 987 */ 988 trace_usb_ohci_td_too_many_pending(ep->nr); 989 return 1; 990 } 991 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r, 992 OHCI_BM(td.flags, TD_DI) == 0); 993 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, pktlen); 994 usb_handle_packet(dev, &ohci->usb_packet); 995 trace_usb_ohci_td_packet_status(ohci->usb_packet.status); 996 997 if (ohci->usb_packet.status == USB_RET_ASYNC) { 998 usb_device_flush_ep_queue(dev, ep); 999 ohci->async_td = addr; 1000 return 1; 1001 } 1002 } 1003 if (ohci->usb_packet.status == USB_RET_SUCCESS) { 1004 ret = ohci->usb_packet.actual_length; 1005 } else { 1006 ret = ohci->usb_packet.status; 1007 } 1008 1009 if (ret >= 0) { 1010 if (dir == OHCI_TD_DIR_IN) { 1011 if (ohci_copy_td(ohci, &td, ohci->usb_buf, ret, 1012 DMA_DIRECTION_FROM_DEVICE)) { 1013 ohci_die(ohci); 1014 } 1015 ohci_td_pkt("IN", ohci->usb_buf, pktlen); 1016 } else { 1017 ret = pktlen; 1018 } 1019 } 1020 1021 /* Writeback */ 1022 if (ret == pktlen || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) { 1023 /* Transmission succeeded. */ 1024 if (ret == len) { 1025 td.cbp = 0; 1026 } else { 1027 if ((td.cbp & 0xfff) + ret > 0xfff) { 1028 td.cbp = (td.be & ~0xfff) + ((td.cbp + ret) & 0xfff); 1029 } else { 1030 td.cbp += ret; 1031 } 1032 } 1033 td.flags |= OHCI_TD_T1; 1034 td.flags ^= OHCI_TD_T0; 1035 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_NOERROR); 1036 OHCI_SET_BM(td.flags, TD_EC, 0); 1037 1038 if ((dir != OHCI_TD_DIR_IN) && (ret != len)) { 1039 /* Partial packet transfer: TD not ready to retire yet */ 1040 goto exit_no_retire; 1041 } 1042 1043 /* Setting ED_C is part of the TD retirement process */ 1044 ed->head &= ~OHCI_ED_C; 1045 if (td.flags & OHCI_TD_T0) { 1046 ed->head |= OHCI_ED_C; 1047 } 1048 } else { 1049 if (ret >= 0) { 1050 trace_usb_ohci_td_underrun(); 1051 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN); 1052 } else { 1053 switch (ret) { 1054 case USB_RET_IOERROR: 1055 case USB_RET_NODEV: 1056 trace_usb_ohci_td_dev_error(); 1057 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING); 1058 break; 1059 case USB_RET_NAK: 1060 trace_usb_ohci_td_nak(); 1061 return 1; 1062 case USB_RET_STALL: 1063 trace_usb_ohci_td_stall(); 1064 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_STALL); 1065 break; 1066 case USB_RET_BABBLE: 1067 trace_usb_ohci_td_babble(); 1068 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAOVERRUN); 1069 break; 1070 default: 1071 trace_usb_ohci_td_bad_device_response(ret); 1072 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_UNDEXPETEDPID); 1073 OHCI_SET_BM(td.flags, TD_EC, 3); 1074 break; 1075 } 1076 /* 1077 * An error occurred so we have to clear the interrupt counter. 1078 * See spec at 6.4.4 on page 104 1079 */ 1080 ohci->done_count = 0; 1081 } 1082 ed->head |= OHCI_ED_H; 1083 } 1084 1085 /* Retire this TD */ 1086 ed->head &= ~OHCI_DPTR_MASK; 1087 ed->head |= td.next & OHCI_DPTR_MASK; 1088 td.next = ohci->done; 1089 ohci->done = addr; 1090 i = OHCI_BM(td.flags, TD_DI); 1091 if (i < ohci->done_count) { 1092 ohci->done_count = i; 1093 } 1094 exit_no_retire: 1095 if (ohci_put_td(ohci, addr, &td)) { 1096 ohci_die(ohci); 1097 return 1; 1098 } 1099 return OHCI_BM(td.flags, TD_CC) != OHCI_CC_NOERROR; 1100 } 1101 1102 /* Service an endpoint list. Returns nonzero if active TD were found. */ 1103 static int ohci_service_ed_list(OHCIState *ohci, uint32_t head) 1104 { 1105 struct ohci_ed ed; 1106 uint32_t next_ed; 1107 uint32_t cur; 1108 int active; 1109 uint32_t link_cnt = 0; 1110 active = 0; 1111 1112 if (head == 0) { 1113 return 0; 1114 } 1115 for (cur = head; cur && link_cnt++ < ED_LINK_LIMIT; cur = next_ed) { 1116 if (ohci_read_ed(ohci, cur, &ed)) { 1117 trace_usb_ohci_ed_read_error(cur); 1118 ohci_die(ohci); 1119 return 0; 1120 } 1121 1122 next_ed = ed.next & OHCI_DPTR_MASK; 1123 1124 if ((ed.head & OHCI_ED_H) || (ed.flags & OHCI_ED_K)) { 1125 uint32_t addr; 1126 /* Cancel pending packets for ED that have been paused. */ 1127 addr = ed.head & OHCI_DPTR_MASK; 1128 if (ohci->async_td && addr == ohci->async_td) { 1129 usb_cancel_packet(&ohci->usb_packet); 1130 ohci->async_td = 0; 1131 usb_device_ep_stopped(ohci->usb_packet.ep->dev, 1132 ohci->usb_packet.ep); 1133 } 1134 continue; 1135 } 1136 1137 while ((ed.head & OHCI_DPTR_MASK) != ed.tail) { 1138 trace_usb_ohci_ed_pkt(cur, (ed.head & OHCI_ED_H) != 0, 1139 (ed.head & OHCI_ED_C) != 0, ed.head & OHCI_DPTR_MASK, 1140 ed.tail & OHCI_DPTR_MASK, ed.next & OHCI_DPTR_MASK); 1141 trace_usb_ohci_ed_pkt_flags( 1142 OHCI_BM(ed.flags, ED_FA), OHCI_BM(ed.flags, ED_EN), 1143 OHCI_BM(ed.flags, ED_D), (ed.flags & OHCI_ED_S) != 0, 1144 (ed.flags & OHCI_ED_K) != 0, (ed.flags & OHCI_ED_F) != 0, 1145 OHCI_BM(ed.flags, ED_MPS)); 1146 1147 active = 1; 1148 1149 if ((ed.flags & OHCI_ED_F) == 0) { 1150 if (ohci_service_td(ohci, &ed)) { 1151 break; 1152 } 1153 } else { 1154 /* Handle isochronous endpoints */ 1155 if (ohci_service_iso_td(ohci, &ed)) { 1156 break; 1157 } 1158 } 1159 } 1160 1161 if (ohci_put_ed(ohci, cur, &ed)) { 1162 ohci_die(ohci); 1163 return 0; 1164 } 1165 } 1166 1167 return active; 1168 } 1169 1170 /* set a timer for EOF */ 1171 static void ohci_eof_timer(OHCIState *ohci) 1172 { 1173 timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time); 1174 } 1175 /* Set a timer for EOF and generate a SOF event */ 1176 static void ohci_sof(OHCIState *ohci) 1177 { 1178 ohci->sof_time += usb_frame_time; 1179 ohci_eof_timer(ohci); 1180 ohci_set_interrupt(ohci, OHCI_INTR_SF); 1181 } 1182 1183 /* Process Control and Bulk lists. */ 1184 static void ohci_process_lists(OHCIState *ohci) 1185 { 1186 if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) { 1187 if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head) { 1188 trace_usb_ohci_process_lists(ohci->ctrl_head, ohci->ctrl_cur); 1189 } 1190 if (!ohci_service_ed_list(ohci, ohci->ctrl_head)) { 1191 ohci->ctrl_cur = 0; 1192 ohci->status &= ~OHCI_STATUS_CLF; 1193 } 1194 } 1195 1196 if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) { 1197 if (!ohci_service_ed_list(ohci, ohci->bulk_head)) { 1198 ohci->bulk_cur = 0; 1199 ohci->status &= ~OHCI_STATUS_BLF; 1200 } 1201 } 1202 } 1203 1204 /* Do frame processing on frame boundary */ 1205 static void ohci_frame_boundary(void *opaque) 1206 { 1207 OHCIState *ohci = opaque; 1208 struct ohci_hcca hcca; 1209 1210 if (ohci_read_hcca(ohci, ohci->hcca, &hcca)) { 1211 trace_usb_ohci_hcca_read_error(ohci->hcca); 1212 ohci_die(ohci); 1213 return; 1214 } 1215 1216 /* Process all the lists at the end of the frame */ 1217 if (ohci->ctl & OHCI_CTL_PLE) { 1218 int n; 1219 1220 n = ohci->frame_number & 0x1f; 1221 ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n])); 1222 } 1223 1224 /* Cancel all pending packets if either of the lists has been disabled. */ 1225 if (ohci->old_ctl & (~ohci->ctl) & (OHCI_CTL_BLE | OHCI_CTL_CLE)) { 1226 ohci_stop_endpoints(ohci); 1227 } 1228 ohci->old_ctl = ohci->ctl; 1229 ohci_process_lists(ohci); 1230 1231 /* Stop if UnrecoverableError happened or ohci_sof will crash */ 1232 if (ohci->intr_status & OHCI_INTR_UE) { 1233 return; 1234 } 1235 1236 /* Frame boundary, so do EOF stuf here */ 1237 ohci->frt = ohci->fit; 1238 1239 /* Increment frame number and take care of endianness. */ 1240 ohci->frame_number = (ohci->frame_number + 1) & 0xffff; 1241 hcca.frame = cpu_to_le16(ohci->frame_number); 1242 /* When the HC updates frame number, set pad to 0. Ref OHCI Spec 4.4.1*/ 1243 hcca.pad = 0; 1244 1245 if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) { 1246 if (!ohci->done) { 1247 abort(); 1248 } 1249 if (ohci->intr & ohci->intr_status) { 1250 ohci->done |= 1; 1251 } 1252 hcca.done = cpu_to_le32(ohci->done); 1253 ohci->done = 0; 1254 ohci->done_count = 7; 1255 ohci_set_interrupt(ohci, OHCI_INTR_WD); 1256 } 1257 1258 if (ohci->done_count != 7 && ohci->done_count != 0) { 1259 ohci->done_count--; 1260 } 1261 /* Do SOF stuff here */ 1262 ohci_sof(ohci); 1263 1264 /* Writeback HCCA */ 1265 if (ohci_put_hcca(ohci, ohci->hcca, &hcca)) { 1266 ohci_die(ohci); 1267 } 1268 } 1269 1270 /* 1271 * Start sending SOF tokens across the USB bus, lists are processed in 1272 * next frame 1273 */ 1274 static int ohci_bus_start(OHCIState *ohci) 1275 { 1276 trace_usb_ohci_start(ohci->name); 1277 /* 1278 * Delay the first SOF event by one frame time as linux driver is 1279 * not ready to receive it and can meet some race conditions 1280 */ 1281 ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 1282 ohci_eof_timer(ohci); 1283 1284 return 1; 1285 } 1286 1287 /* Stop sending SOF tokens on the bus */ 1288 void ohci_bus_stop(OHCIState *ohci) 1289 { 1290 trace_usb_ohci_stop(ohci->name); 1291 timer_del(ohci->eof_timer); 1292 } 1293 1294 /* Frame interval toggle is manipulated by the hcd only */ 1295 static void ohci_set_frame_interval(OHCIState *ohci, uint16_t val) 1296 { 1297 val &= OHCI_FMI_FI; 1298 1299 if (val != ohci->fi) { 1300 trace_usb_ohci_set_frame_interval(ohci->name, ohci->fi, ohci->fi); 1301 } 1302 1303 ohci->fi = val; 1304 } 1305 1306 static void ohci_port_power(OHCIState *ohci, int i, int p) 1307 { 1308 if (p) { 1309 ohci->rhport[i].ctrl |= OHCI_PORT_PPS; 1310 } else { 1311 ohci->rhport[i].ctrl &= ~(OHCI_PORT_PPS | OHCI_PORT_CCS | 1312 OHCI_PORT_PSS | OHCI_PORT_PRS); 1313 } 1314 } 1315 1316 /* Set HcControlRegister */ 1317 static void ohci_set_ctl(OHCIState *ohci, uint32_t val) 1318 { 1319 uint32_t old_state; 1320 uint32_t new_state; 1321 1322 old_state = ohci->ctl & OHCI_CTL_HCFS; 1323 ohci->ctl = val; 1324 new_state = ohci->ctl & OHCI_CTL_HCFS; 1325 1326 /* no state change */ 1327 if (old_state == new_state) { 1328 return; 1329 } 1330 trace_usb_ohci_set_ctl(ohci->name, new_state); 1331 switch (new_state) { 1332 case OHCI_USB_OPERATIONAL: 1333 ohci_bus_start(ohci); 1334 break; 1335 case OHCI_USB_SUSPEND: 1336 ohci_bus_stop(ohci); 1337 /* clear pending SF otherwise linux driver loops in ohci_irq() */ 1338 ohci->intr_status &= ~OHCI_INTR_SF; 1339 ohci_intr_update(ohci); 1340 break; 1341 case OHCI_USB_RESUME: 1342 trace_usb_ohci_resume(ohci->name); 1343 break; 1344 case OHCI_USB_RESET: 1345 ohci_roothub_reset(ohci); 1346 break; 1347 } 1348 } 1349 1350 static uint32_t ohci_get_frame_remaining(OHCIState *ohci) 1351 { 1352 uint16_t fr; 1353 int64_t tks; 1354 1355 if ((ohci->ctl & OHCI_CTL_HCFS) != OHCI_USB_OPERATIONAL) { 1356 return ohci->frt << 31; 1357 } 1358 /* Being in USB operational state guarantees sof_time was set already. */ 1359 tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time; 1360 if (tks < 0) { 1361 tks = 0; 1362 } 1363 1364 /* avoid muldiv if possible */ 1365 if (tks >= usb_frame_time) { 1366 return ohci->frt << 31; 1367 } 1368 tks = tks / usb_bit_time; 1369 fr = (uint16_t)(ohci->fi - tks); 1370 1371 return (ohci->frt << 31) | fr; 1372 } 1373 1374 1375 /* Set root hub status */ 1376 static void ohci_set_hub_status(OHCIState *ohci, uint32_t val) 1377 { 1378 uint32_t old_state; 1379 1380 old_state = ohci->rhstatus; 1381 1382 /* write 1 to clear OCIC */ 1383 if (val & OHCI_RHS_OCIC) { 1384 ohci->rhstatus &= ~OHCI_RHS_OCIC; 1385 } 1386 if (val & OHCI_RHS_LPS) { 1387 int i; 1388 1389 for (i = 0; i < ohci->num_ports; i++) { 1390 ohci_port_power(ohci, i, 0); 1391 } 1392 trace_usb_ohci_hub_power_down(); 1393 } 1394 1395 if (val & OHCI_RHS_LPSC) { 1396 int i; 1397 1398 for (i = 0; i < ohci->num_ports; i++) { 1399 ohci_port_power(ohci, i, 1); 1400 } 1401 trace_usb_ohci_hub_power_up(); 1402 } 1403 1404 if (val & OHCI_RHS_DRWE) { 1405 ohci->rhstatus |= OHCI_RHS_DRWE; 1406 } 1407 if (val & OHCI_RHS_CRWE) { 1408 ohci->rhstatus &= ~OHCI_RHS_DRWE; 1409 } 1410 if (old_state != ohci->rhstatus) { 1411 ohci_set_interrupt(ohci, OHCI_INTR_RHSC); 1412 } 1413 } 1414 1415 /* This is the one state transition the controller can do by itself */ 1416 static bool ohci_resume(OHCIState *s) 1417 { 1418 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) { 1419 trace_usb_ohci_remote_wakeup(s->name); 1420 s->ctl &= ~OHCI_CTL_HCFS; 1421 s->ctl |= OHCI_USB_RESUME; 1422 return true; 1423 } 1424 return false; 1425 } 1426 1427 /* 1428 * Sets a flag in a port status reg but only set it if the port is connected. 1429 * If not set ConnectStatusChange flag. If flag is enabled return 1. 1430 */ 1431 static int ohci_port_set_if_connected(OHCIState *ohci, int i, uint32_t val) 1432 { 1433 int ret = 1; 1434 1435 /* writing a 0 has no effect */ 1436 if (val == 0) { 1437 return 0; 1438 } 1439 /* If CurrentConnectStatus is cleared we set ConnectStatusChange */ 1440 if (!(ohci->rhport[i].ctrl & OHCI_PORT_CCS)) { 1441 ohci->rhport[i].ctrl |= OHCI_PORT_CSC; 1442 if (ohci->rhstatus & OHCI_RHS_DRWE) { 1443 /* CSC is a wakeup event */ 1444 if (ohci_resume(ohci)) { 1445 ohci_set_interrupt(ohci, OHCI_INTR_RD); 1446 } 1447 } 1448 return 0; 1449 } 1450 1451 if (ohci->rhport[i].ctrl & val) { 1452 ret = 0; 1453 } 1454 /* set the bit */ 1455 ohci->rhport[i].ctrl |= val; 1456 1457 return ret; 1458 } 1459 1460 /* Set root hub port status */ 1461 static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val) 1462 { 1463 uint32_t old_state; 1464 OHCIPort *port; 1465 1466 port = &ohci->rhport[portnum]; 1467 old_state = port->ctrl; 1468 1469 /* Write to clear CSC, PESC, PSSC, OCIC, PRSC */ 1470 if (val & OHCI_PORT_WTC) { 1471 port->ctrl &= ~(val & OHCI_PORT_WTC); 1472 } 1473 if (val & OHCI_PORT_CCS) { 1474 port->ctrl &= ~OHCI_PORT_PES; 1475 } 1476 ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PES); 1477 1478 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PSS)) { 1479 trace_usb_ohci_port_suspend(portnum); 1480 } 1481 1482 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PRS)) { 1483 trace_usb_ohci_port_reset(portnum); 1484 usb_device_reset(port->port.dev); 1485 port->ctrl &= ~OHCI_PORT_PRS; 1486 /* ??? Should this also set OHCI_PORT_PESC. */ 1487 port->ctrl |= OHCI_PORT_PES | OHCI_PORT_PRSC; 1488 } 1489 1490 /* Invert order here to ensure in ambiguous case, device is powered up. */ 1491 if (val & OHCI_PORT_LSDA) { 1492 ohci_port_power(ohci, portnum, 0); 1493 } 1494 if (val & OHCI_PORT_PPS) { 1495 ohci_port_power(ohci, portnum, 1); 1496 } 1497 if (old_state != port->ctrl) { 1498 ohci_set_interrupt(ohci, OHCI_INTR_RHSC); 1499 } 1500 } 1501 1502 static uint64_t ohci_mem_read(void *opaque, 1503 hwaddr addr, 1504 unsigned size) 1505 { 1506 OHCIState *ohci = opaque; 1507 uint32_t retval; 1508 1509 /* Only aligned reads are allowed on OHCI */ 1510 if (addr & 3) { 1511 trace_usb_ohci_mem_read_unaligned(addr); 1512 return 0xffffffff; 1513 } else if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) { 1514 /* HcRhPortStatus */ 1515 retval = ohci->rhport[(addr - 0x54) >> 2].ctrl | OHCI_PORT_PPS; 1516 trace_usb_ohci_mem_port_read(size, "HcRhPortStatus", (addr - 0x50) >> 2, 1517 addr, addr >> 2, retval); 1518 } else { 1519 switch (addr >> 2) { 1520 case 0: /* HcRevision */ 1521 retval = 0x10; 1522 break; 1523 1524 case 1: /* HcControl */ 1525 retval = ohci->ctl; 1526 break; 1527 1528 case 2: /* HcCommandStatus */ 1529 retval = ohci->status; 1530 break; 1531 1532 case 3: /* HcInterruptStatus */ 1533 retval = ohci->intr_status; 1534 break; 1535 1536 case 4: /* HcInterruptEnable */ 1537 case 5: /* HcInterruptDisable */ 1538 retval = ohci->intr; 1539 break; 1540 1541 case 6: /* HcHCCA */ 1542 retval = ohci->hcca; 1543 break; 1544 1545 case 7: /* HcPeriodCurrentED */ 1546 retval = ohci->per_cur; 1547 break; 1548 1549 case 8: /* HcControlHeadED */ 1550 retval = ohci->ctrl_head; 1551 break; 1552 1553 case 9: /* HcControlCurrentED */ 1554 retval = ohci->ctrl_cur; 1555 break; 1556 1557 case 10: /* HcBulkHeadED */ 1558 retval = ohci->bulk_head; 1559 break; 1560 1561 case 11: /* HcBulkCurrentED */ 1562 retval = ohci->bulk_cur; 1563 break; 1564 1565 case 12: /* HcDoneHead */ 1566 retval = ohci->done; 1567 break; 1568 1569 case 13: /* HcFmInterretval */ 1570 retval = (ohci->fit << 31) | (ohci->fsmps << 16) | (ohci->fi); 1571 break; 1572 1573 case 14: /* HcFmRemaining */ 1574 retval = ohci_get_frame_remaining(ohci); 1575 break; 1576 1577 case 15: /* HcFmNumber */ 1578 retval = ohci->frame_number; 1579 break; 1580 1581 case 16: /* HcPeriodicStart */ 1582 retval = ohci->pstart; 1583 break; 1584 1585 case 17: /* HcLSThreshold */ 1586 retval = ohci->lst; 1587 break; 1588 1589 case 18: /* HcRhDescriptorA */ 1590 retval = ohci->rhdesc_a; 1591 break; 1592 1593 case 19: /* HcRhDescriptorB */ 1594 retval = ohci->rhdesc_b; 1595 break; 1596 1597 case 20: /* HcRhStatus */ 1598 retval = ohci->rhstatus; 1599 break; 1600 1601 /* PXA27x specific registers */ 1602 case 24: /* HcStatus */ 1603 retval = ohci->hstatus & ohci->hmask; 1604 break; 1605 1606 case 25: /* HcHReset */ 1607 retval = ohci->hreset; 1608 break; 1609 1610 case 26: /* HcHInterruptEnable */ 1611 retval = ohci->hmask; 1612 break; 1613 1614 case 27: /* HcHInterruptTest */ 1615 retval = ohci->htest; 1616 break; 1617 1618 default: 1619 trace_usb_ohci_mem_read_bad_offset(addr); 1620 retval = 0xffffffff; 1621 } 1622 if (addr != 0xc || retval) { 1623 trace_usb_ohci_mem_read(size, ohci_reg_name(addr), addr, addr >> 2, 1624 retval); 1625 } 1626 } 1627 1628 return retval; 1629 } 1630 1631 static void ohci_mem_write(void *opaque, 1632 hwaddr addr, 1633 uint64_t val, 1634 unsigned size) 1635 { 1636 OHCIState *ohci = opaque; 1637 1638 /* Only aligned reads are allowed on OHCI */ 1639 if (addr & 3) { 1640 trace_usb_ohci_mem_write_unaligned(addr); 1641 return; 1642 } 1643 1644 if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) { 1645 /* HcRhPortStatus */ 1646 trace_usb_ohci_mem_port_write(size, "HcRhPortStatus", 1647 (addr - 0x50) >> 2, addr, addr >> 2, val); 1648 ohci_port_set_status(ohci, (addr - 0x54) >> 2, val); 1649 return; 1650 } 1651 1652 trace_usb_ohci_mem_write(size, ohci_reg_name(addr), addr, addr >> 2, val); 1653 switch (addr >> 2) { 1654 case 1: /* HcControl */ 1655 ohci_set_ctl(ohci, val); 1656 break; 1657 1658 case 2: /* HcCommandStatus */ 1659 /* SOC is read-only */ 1660 val = (val & ~OHCI_STATUS_SOC); 1661 1662 /* Bits written as '0' remain unchanged in the register */ 1663 ohci->status |= val; 1664 1665 if (ohci->status & OHCI_STATUS_HCR) { 1666 ohci_soft_reset(ohci); 1667 } 1668 break; 1669 1670 case 3: /* HcInterruptStatus */ 1671 ohci->intr_status &= ~val; 1672 ohci_intr_update(ohci); 1673 break; 1674 1675 case 4: /* HcInterruptEnable */ 1676 ohci->intr |= val; 1677 ohci_intr_update(ohci); 1678 break; 1679 1680 case 5: /* HcInterruptDisable */ 1681 ohci->intr &= ~val; 1682 ohci_intr_update(ohci); 1683 break; 1684 1685 case 6: /* HcHCCA */ 1686 ohci->hcca = val & OHCI_HCCA_MASK; 1687 break; 1688 1689 case 7: /* HcPeriodCurrentED */ 1690 /* Ignore writes to this read-only register, Linux does them */ 1691 break; 1692 1693 case 8: /* HcControlHeadED */ 1694 ohci->ctrl_head = val & OHCI_EDPTR_MASK; 1695 break; 1696 1697 case 9: /* HcControlCurrentED */ 1698 ohci->ctrl_cur = val & OHCI_EDPTR_MASK; 1699 break; 1700 1701 case 10: /* HcBulkHeadED */ 1702 ohci->bulk_head = val & OHCI_EDPTR_MASK; 1703 break; 1704 1705 case 11: /* HcBulkCurrentED */ 1706 ohci->bulk_cur = val & OHCI_EDPTR_MASK; 1707 break; 1708 1709 case 13: /* HcFmInterval */ 1710 ohci->fsmps = (val & OHCI_FMI_FSMPS) >> 16; 1711 ohci->fit = (val & OHCI_FMI_FIT) >> 31; 1712 ohci_set_frame_interval(ohci, val); 1713 break; 1714 1715 case 15: /* HcFmNumber */ 1716 break; 1717 1718 case 16: /* HcPeriodicStart */ 1719 ohci->pstart = val & 0xffff; 1720 break; 1721 1722 case 17: /* HcLSThreshold */ 1723 ohci->lst = val & 0xffff; 1724 break; 1725 1726 case 18: /* HcRhDescriptorA */ 1727 ohci->rhdesc_a &= ~OHCI_RHA_RW_MASK; 1728 ohci->rhdesc_a |= val & OHCI_RHA_RW_MASK; 1729 break; 1730 1731 case 19: /* HcRhDescriptorB */ 1732 break; 1733 1734 case 20: /* HcRhStatus */ 1735 ohci_set_hub_status(ohci, val); 1736 break; 1737 1738 /* PXA27x specific registers */ 1739 case 24: /* HcStatus */ 1740 ohci->hstatus &= ~(val & ohci->hmask); 1741 break; 1742 1743 case 25: /* HcHReset */ 1744 ohci->hreset = val & ~OHCI_HRESET_FSBIR; 1745 if (val & OHCI_HRESET_FSBIR) { 1746 ohci_hard_reset(ohci); 1747 } 1748 break; 1749 1750 case 26: /* HcHInterruptEnable */ 1751 ohci->hmask = val; 1752 break; 1753 1754 case 27: /* HcHInterruptTest */ 1755 ohci->htest = val; 1756 break; 1757 1758 default: 1759 trace_usb_ohci_mem_write_bad_offset(addr); 1760 break; 1761 } 1762 } 1763 1764 static const MemoryRegionOps ohci_mem_ops = { 1765 .read = ohci_mem_read, 1766 .write = ohci_mem_write, 1767 .endianness = DEVICE_LITTLE_ENDIAN, 1768 }; 1769 1770 /* USBPortOps */ 1771 static void ohci_attach(USBPort *port1) 1772 { 1773 OHCIState *s = port1->opaque; 1774 OHCIPort *port = &s->rhport[port1->index]; 1775 uint32_t old_state = port->ctrl; 1776 1777 /* set connect status */ 1778 port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC; 1779 1780 /* update speed */ 1781 if (port->port.dev->speed == USB_SPEED_LOW) { 1782 port->ctrl |= OHCI_PORT_LSDA; 1783 } else { 1784 port->ctrl &= ~OHCI_PORT_LSDA; 1785 } 1786 1787 /* notify of remote-wakeup */ 1788 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) { 1789 ohci_set_interrupt(s, OHCI_INTR_RD); 1790 } 1791 1792 trace_usb_ohci_port_attach(port1->index); 1793 1794 if (old_state != port->ctrl) { 1795 ohci_set_interrupt(s, OHCI_INTR_RHSC); 1796 } 1797 } 1798 1799 static void ohci_child_detach(USBPort *port1, USBDevice *dev) 1800 { 1801 OHCIState *ohci = port1->opaque; 1802 1803 if (ohci->async_td && 1804 usb_packet_is_inflight(&ohci->usb_packet) && 1805 ohci->usb_packet.ep->dev == dev) { 1806 usb_cancel_packet(&ohci->usb_packet); 1807 ohci->async_td = 0; 1808 } 1809 } 1810 1811 static void ohci_detach(USBPort *port1) 1812 { 1813 OHCIState *s = port1->opaque; 1814 OHCIPort *port = &s->rhport[port1->index]; 1815 uint32_t old_state = port->ctrl; 1816 1817 ohci_child_detach(port1, port1->dev); 1818 1819 /* set connect status */ 1820 if (port->ctrl & OHCI_PORT_CCS) { 1821 port->ctrl &= ~OHCI_PORT_CCS; 1822 port->ctrl |= OHCI_PORT_CSC; 1823 } 1824 /* disable port */ 1825 if (port->ctrl & OHCI_PORT_PES) { 1826 port->ctrl &= ~OHCI_PORT_PES; 1827 port->ctrl |= OHCI_PORT_PESC; 1828 } 1829 trace_usb_ohci_port_detach(port1->index); 1830 1831 if (old_state != port->ctrl) { 1832 ohci_set_interrupt(s, OHCI_INTR_RHSC); 1833 } 1834 } 1835 1836 static void ohci_wakeup(USBPort *port1) 1837 { 1838 OHCIState *s = port1->opaque; 1839 OHCIPort *port = &s->rhport[port1->index]; 1840 uint32_t intr = 0; 1841 if (port->ctrl & OHCI_PORT_PSS) { 1842 trace_usb_ohci_port_wakeup(port1->index); 1843 port->ctrl |= OHCI_PORT_PSSC; 1844 port->ctrl &= ~OHCI_PORT_PSS; 1845 intr = OHCI_INTR_RHSC; 1846 } 1847 /* Note that the controller can be suspended even if this port is not */ 1848 if (ohci_resume(s)) { 1849 /* 1850 * In suspend mode only ResumeDetected is possible, not RHSC: 1851 * see the OHCI spec 5.1.2.3. 1852 */ 1853 intr = OHCI_INTR_RD; 1854 } 1855 ohci_set_interrupt(s, intr); 1856 } 1857 1858 static void ohci_async_complete_packet(USBPort *port, USBPacket *packet) 1859 { 1860 OHCIState *ohci = container_of(packet, OHCIState, usb_packet); 1861 1862 trace_usb_ohci_async_complete(); 1863 ohci->async_complete = true; 1864 ohci_process_lists(ohci); 1865 } 1866 1867 static USBPortOps ohci_port_ops = { 1868 .attach = ohci_attach, 1869 .detach = ohci_detach, 1870 .child_detach = ohci_child_detach, 1871 .wakeup = ohci_wakeup, 1872 .complete = ohci_async_complete_packet, 1873 }; 1874 1875 static USBBusOps ohci_bus_ops = { 1876 }; 1877 1878 void usb_ohci_init(OHCIState *ohci, DeviceState *dev, uint32_t num_ports, 1879 dma_addr_t localmem_base, char *masterbus, 1880 uint32_t firstport, AddressSpace *as, 1881 void (*ohci_die_fn)(OHCIState *), Error **errp) 1882 { 1883 Error *err = NULL; 1884 int i; 1885 1886 ohci->as = as; 1887 ohci->ohci_die = ohci_die_fn; 1888 1889 if (num_ports > OHCI_MAX_PORTS) { 1890 error_setg(errp, "OHCI num-ports=%u is too big (limit is %u ports)", 1891 num_ports, OHCI_MAX_PORTS); 1892 return; 1893 } 1894 1895 if (usb_frame_time == 0) { 1896 #ifdef OHCI_TIME_WARP 1897 usb_frame_time = NANOSECONDS_PER_SECOND; 1898 usb_bit_time = NANOSECONDS_PER_SECOND / (USB_HZ / 1000); 1899 #else 1900 usb_frame_time = NANOSECONDS_PER_SECOND / 1000; 1901 if (NANOSECONDS_PER_SECOND >= USB_HZ) { 1902 usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ; 1903 } else { 1904 usb_bit_time = 1; 1905 } 1906 #endif 1907 trace_usb_ohci_init_time(usb_frame_time, usb_bit_time); 1908 } 1909 1910 ohci->num_ports = num_ports; 1911 if (masterbus) { 1912 USBPort *ports[OHCI_MAX_PORTS]; 1913 for (i = 0; i < num_ports; i++) { 1914 ports[i] = &ohci->rhport[i].port; 1915 } 1916 usb_register_companion(masterbus, ports, num_ports, 1917 firstport, ohci, &ohci_port_ops, 1918 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL, 1919 &err); 1920 if (err) { 1921 error_propagate(errp, err); 1922 return; 1923 } 1924 } else { 1925 usb_bus_new(&ohci->bus, sizeof(ohci->bus), &ohci_bus_ops, dev); 1926 for (i = 0; i < num_ports; i++) { 1927 usb_register_port(&ohci->bus, &ohci->rhport[i].port, 1928 ohci, i, &ohci_port_ops, 1929 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL); 1930 } 1931 } 1932 1933 memory_region_init_io(&ohci->mem, OBJECT(dev), &ohci_mem_ops, 1934 ohci, "ohci", 256); 1935 ohci->localmem_base = localmem_base; 1936 1937 ohci->name = object_get_typename(OBJECT(dev)); 1938 usb_packet_init(&ohci->usb_packet); 1939 1940 ohci->async_td = 0; 1941 1942 ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 1943 ohci_frame_boundary, ohci); 1944 } 1945 1946 /* 1947 * A typical OHCI will stop operating and set itself into error state 1948 * (which can be queried by MMIO) to signal that it got an error. 1949 */ 1950 void ohci_sysbus_die(struct OHCIState *ohci) 1951 { 1952 trace_usb_ohci_die(); 1953 1954 ohci_set_interrupt(ohci, OHCI_INTR_UE); 1955 ohci_bus_stop(ohci); 1956 } 1957 1958 static const VMStateDescription vmstate_ohci_state_port = { 1959 .name = "ohci-core/port", 1960 .version_id = 1, 1961 .minimum_version_id = 1, 1962 .fields = (const VMStateField[]) { 1963 VMSTATE_UINT32(ctrl, OHCIPort), 1964 VMSTATE_END_OF_LIST() 1965 }, 1966 }; 1967 1968 static bool ohci_eof_timer_needed(void *opaque) 1969 { 1970 OHCIState *ohci = opaque; 1971 1972 return timer_pending(ohci->eof_timer); 1973 } 1974 1975 static const VMStateDescription vmstate_ohci_eof_timer = { 1976 .name = "ohci-core/eof-timer", 1977 .version_id = 1, 1978 .minimum_version_id = 1, 1979 .needed = ohci_eof_timer_needed, 1980 .fields = (const VMStateField[]) { 1981 VMSTATE_TIMER_PTR(eof_timer, OHCIState), 1982 VMSTATE_END_OF_LIST() 1983 }, 1984 }; 1985 1986 const VMStateDescription vmstate_ohci_state = { 1987 .name = "ohci-core", 1988 .version_id = 1, 1989 .minimum_version_id = 1, 1990 .fields = (const VMStateField[]) { 1991 VMSTATE_INT64(sof_time, OHCIState), 1992 VMSTATE_UINT32(ctl, OHCIState), 1993 VMSTATE_UINT32(status, OHCIState), 1994 VMSTATE_UINT32(intr_status, OHCIState), 1995 VMSTATE_UINT32(intr, OHCIState), 1996 VMSTATE_UINT32(hcca, OHCIState), 1997 VMSTATE_UINT32(ctrl_head, OHCIState), 1998 VMSTATE_UINT32(ctrl_cur, OHCIState), 1999 VMSTATE_UINT32(bulk_head, OHCIState), 2000 VMSTATE_UINT32(bulk_cur, OHCIState), 2001 VMSTATE_UINT32(per_cur, OHCIState), 2002 VMSTATE_UINT32(done, OHCIState), 2003 VMSTATE_INT32(done_count, OHCIState), 2004 VMSTATE_UINT16(fsmps, OHCIState), 2005 VMSTATE_UINT8(fit, OHCIState), 2006 VMSTATE_UINT16(fi, OHCIState), 2007 VMSTATE_UINT8(frt, OHCIState), 2008 VMSTATE_UINT16(frame_number, OHCIState), 2009 VMSTATE_UINT16(padding, OHCIState), 2010 VMSTATE_UINT32(pstart, OHCIState), 2011 VMSTATE_UINT32(lst, OHCIState), 2012 VMSTATE_UINT32(rhdesc_a, OHCIState), 2013 VMSTATE_UINT32(rhdesc_b, OHCIState), 2014 VMSTATE_UINT32(rhstatus, OHCIState), 2015 VMSTATE_STRUCT_ARRAY(rhport, OHCIState, OHCI_MAX_PORTS, 0, 2016 vmstate_ohci_state_port, OHCIPort), 2017 VMSTATE_UINT32(hstatus, OHCIState), 2018 VMSTATE_UINT32(hmask, OHCIState), 2019 VMSTATE_UINT32(hreset, OHCIState), 2020 VMSTATE_UINT32(htest, OHCIState), 2021 VMSTATE_UINT32(old_ctl, OHCIState), 2022 VMSTATE_UINT8_ARRAY(usb_buf, OHCIState, 8192), 2023 VMSTATE_UINT32(async_td, OHCIState), 2024 VMSTATE_BOOL(async_complete, OHCIState), 2025 VMSTATE_END_OF_LIST() 2026 }, 2027 .subsections = (const VMStateDescription * const []) { 2028 &vmstate_ohci_eof_timer, 2029 NULL 2030 } 2031 }; 2032