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 Desciptor. */ 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 Desciptor. */ 75 #define OHCI_ED_H 1 76 #define OHCI_ED_C 2 77 78 /* Bitfields for the first word of a Transfer Desciptor. */ 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 Desciptor. */ 92 /* CC & DI - same as in the General Transfer Desciptor */ 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 Desciptor - 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|OHCI_PORT_PSSC \ 216 |OHCI_PORT_OCIC|OHCI_PORT_PRSC) 217 218 #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 void ohci_die(OHCIState *ohci) 239 { 240 ohci->ohci_die(ohci); 241 } 242 243 /* Update IRQ levels */ 244 static inline void ohci_intr_update(OHCIState *ohci) 245 { 246 int level = 0; 247 248 if ((ohci->intr & OHCI_INTR_MIE) && 249 (ohci->intr_status & ohci->intr)) 250 level = 1; 251 252 qemu_set_irq(ohci->irq, level); 253 } 254 255 /* Set an interrupt */ 256 static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr) 257 { 258 ohci->intr_status |= intr; 259 ohci_intr_update(ohci); 260 } 261 262 static USBDevice *ohci_find_device(OHCIState *ohci, uint8_t addr) 263 { 264 USBDevice *dev; 265 int i; 266 267 for (i = 0; i < ohci->num_ports; i++) { 268 if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0) { 269 continue; 270 } 271 dev = usb_find_device(&ohci->rhport[i].port, addr); 272 if (dev != NULL) { 273 return dev; 274 } 275 } 276 return NULL; 277 } 278 279 void ohci_stop_endpoints(OHCIState *ohci) 280 { 281 USBDevice *dev; 282 int i, j; 283 284 if (ohci->async_td) { 285 usb_cancel_packet(&ohci->usb_packet); 286 ohci->async_td = 0; 287 } 288 for (i = 0; i < ohci->num_ports; i++) { 289 dev = ohci->rhport[i].port.dev; 290 if (dev && dev->attached) { 291 usb_device_ep_stopped(dev, &dev->ep_ctl); 292 for (j = 0; j < USB_MAX_ENDPOINTS; j++) { 293 usb_device_ep_stopped(dev, &dev->ep_in[j]); 294 usb_device_ep_stopped(dev, &dev->ep_out[j]); 295 } 296 } 297 } 298 } 299 300 static void ohci_roothub_reset(OHCIState *ohci) 301 { 302 OHCIPort *port; 303 int i; 304 305 ohci_bus_stop(ohci); 306 ohci->rhdesc_a = OHCI_RHA_NPS | ohci->num_ports; 307 ohci->rhdesc_b = 0x0; /* Impl. specific */ 308 ohci->rhstatus = 0; 309 310 for (i = 0; i < ohci->num_ports; i++) { 311 port = &ohci->rhport[i]; 312 port->ctrl = 0; 313 if (port->port.dev && port->port.dev->attached) { 314 usb_port_reset(&port->port); 315 } 316 } 317 ohci_stop_endpoints(ohci); 318 } 319 320 /* Reset the controller */ 321 static void ohci_soft_reset(OHCIState *ohci) 322 { 323 trace_usb_ohci_reset(ohci->name); 324 325 ohci_bus_stop(ohci); 326 ohci->ctl = (ohci->ctl & OHCI_CTL_IR) | OHCI_USB_SUSPEND; 327 ohci->old_ctl = 0; 328 ohci->status = 0; 329 ohci->intr_status = 0; 330 ohci->intr = OHCI_INTR_MIE; 331 332 ohci->hcca = 0; 333 ohci->ctrl_head = ohci->ctrl_cur = 0; 334 ohci->bulk_head = ohci->bulk_cur = 0; 335 ohci->per_cur = 0; 336 ohci->done = 0; 337 ohci->done_count = 7; 338 339 /* FSMPS is marked TBD in OCHI 1.0, what gives ffs? 340 * I took the value linux sets ... 341 */ 342 ohci->fsmps = 0x2778; 343 ohci->fi = 0x2edf; 344 ohci->fit = 0; 345 ohci->frt = 0; 346 ohci->frame_number = 0; 347 ohci->pstart = 0; 348 ohci->lst = OHCI_LS_THRESH; 349 } 350 351 void ohci_hard_reset(OHCIState *ohci) 352 { 353 ohci_soft_reset(ohci); 354 ohci->ctl = 0; 355 ohci_roothub_reset(ohci); 356 } 357 358 /* Get an array of dwords from main memory */ 359 static inline int get_dwords(OHCIState *ohci, 360 dma_addr_t addr, uint32_t *buf, int num) 361 { 362 int i; 363 364 addr += ohci->localmem_base; 365 366 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 367 if (dma_memory_read(ohci->as, addr, 368 buf, sizeof(*buf), MEMTXATTRS_UNSPECIFIED)) { 369 return -1; 370 } 371 *buf = le32_to_cpu(*buf); 372 } 373 374 return 0; 375 } 376 377 /* Put an array of dwords in to main memory */ 378 static inline int put_dwords(OHCIState *ohci, 379 dma_addr_t addr, uint32_t *buf, int num) 380 { 381 int i; 382 383 addr += ohci->localmem_base; 384 385 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 386 uint32_t tmp = cpu_to_le32(*buf); 387 if (dma_memory_write(ohci->as, addr, 388 &tmp, sizeof(tmp), MEMTXATTRS_UNSPECIFIED)) { 389 return -1; 390 } 391 } 392 393 return 0; 394 } 395 396 /* Get an array of words from main memory */ 397 static inline int get_words(OHCIState *ohci, 398 dma_addr_t addr, uint16_t *buf, int num) 399 { 400 int i; 401 402 addr += ohci->localmem_base; 403 404 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 405 if (dma_memory_read(ohci->as, addr, 406 buf, sizeof(*buf), MEMTXATTRS_UNSPECIFIED)) { 407 return -1; 408 } 409 *buf = le16_to_cpu(*buf); 410 } 411 412 return 0; 413 } 414 415 /* Put an array of words in to main memory */ 416 static inline int put_words(OHCIState *ohci, 417 dma_addr_t addr, uint16_t *buf, int num) 418 { 419 int i; 420 421 addr += ohci->localmem_base; 422 423 for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) { 424 uint16_t tmp = cpu_to_le16(*buf); 425 if (dma_memory_write(ohci->as, addr, 426 &tmp, sizeof(tmp), MEMTXATTRS_UNSPECIFIED)) { 427 return -1; 428 } 429 } 430 431 return 0; 432 } 433 434 static inline int ohci_read_ed(OHCIState *ohci, 435 dma_addr_t addr, struct ohci_ed *ed) 436 { 437 return get_dwords(ohci, addr, (uint32_t *)ed, sizeof(*ed) >> 2); 438 } 439 440 static inline int ohci_read_td(OHCIState *ohci, 441 dma_addr_t addr, struct ohci_td *td) 442 { 443 return get_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2); 444 } 445 446 static inline int ohci_read_iso_td(OHCIState *ohci, 447 dma_addr_t addr, struct ohci_iso_td *td) 448 { 449 return get_dwords(ohci, addr, (uint32_t *)td, 4) || 450 get_words(ohci, addr + 16, td->offset, 8); 451 } 452 453 static inline int ohci_read_hcca(OHCIState *ohci, 454 dma_addr_t addr, struct ohci_hcca *hcca) 455 { 456 return dma_memory_read(ohci->as, addr + ohci->localmem_base, hcca, 457 sizeof(*hcca), MEMTXATTRS_UNSPECIFIED); 458 } 459 460 static inline int ohci_put_ed(OHCIState *ohci, 461 dma_addr_t addr, struct ohci_ed *ed) 462 { 463 /* ed->tail is under control of the HCD. 464 * Since just ed->head is changed by HC, just write back this 465 */ 466 467 return put_dwords(ohci, addr + ED_WBACK_OFFSET, 468 (uint32_t *)((char *)ed + ED_WBACK_OFFSET), 469 ED_WBACK_SIZE >> 2); 470 } 471 472 static inline int ohci_put_td(OHCIState *ohci, 473 dma_addr_t addr, struct ohci_td *td) 474 { 475 return put_dwords(ohci, addr, (uint32_t *)td, sizeof(*td) >> 2); 476 } 477 478 static inline int ohci_put_iso_td(OHCIState *ohci, 479 dma_addr_t addr, struct ohci_iso_td *td) 480 { 481 return put_dwords(ohci, addr, (uint32_t *)td, 4) || 482 put_words(ohci, addr + 16, td->offset, 8); 483 } 484 485 static inline int ohci_put_hcca(OHCIState *ohci, 486 dma_addr_t addr, struct ohci_hcca *hcca) 487 { 488 return dma_memory_write(ohci->as, 489 addr + ohci->localmem_base + HCCA_WRITEBACK_OFFSET, 490 (char *)hcca + HCCA_WRITEBACK_OFFSET, 491 HCCA_WRITEBACK_SIZE, MEMTXATTRS_UNSPECIFIED); 492 } 493 494 /* Read/Write the contents of a TD from/to main memory. */ 495 static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td, 496 uint8_t *buf, int len, DMADirection dir) 497 { 498 dma_addr_t ptr, n; 499 500 ptr = td->cbp; 501 n = 0x1000 - (ptr & 0xfff); 502 if (n > len) 503 n = len; 504 505 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 506 n, dir, MEMTXATTRS_UNSPECIFIED)) { 507 return -1; 508 } 509 if (n == len) { 510 return 0; 511 } 512 ptr = td->be & ~0xfffu; 513 buf += n; 514 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 515 len - n, dir, MEMTXATTRS_UNSPECIFIED)) { 516 return -1; 517 } 518 return 0; 519 } 520 521 /* Read/Write the contents of an ISO TD from/to main memory. */ 522 static int ohci_copy_iso_td(OHCIState *ohci, 523 uint32_t start_addr, uint32_t end_addr, 524 uint8_t *buf, int len, DMADirection dir) 525 { 526 dma_addr_t ptr, n; 527 528 ptr = start_addr; 529 n = 0x1000 - (ptr & 0xfff); 530 if (n > len) 531 n = len; 532 533 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 534 n, dir, MEMTXATTRS_UNSPECIFIED)) { 535 return -1; 536 } 537 if (n == len) { 538 return 0; 539 } 540 ptr = end_addr & ~0xfffu; 541 buf += n; 542 if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, 543 len - n, dir, MEMTXATTRS_UNSPECIFIED)) { 544 return -1; 545 } 546 return 0; 547 } 548 549 #define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b))) 550 551 static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed) 552 { 553 int dir; 554 size_t len = 0; 555 const char *str = NULL; 556 int pid; 557 int ret; 558 int i; 559 USBDevice *dev; 560 USBEndpoint *ep; 561 USBPacket *pkt; 562 uint8_t buf[8192]; 563 bool int_req; 564 struct ohci_iso_td iso_td; 565 uint32_t addr; 566 uint16_t starting_frame; 567 int16_t relative_frame_number; 568 int frame_count; 569 uint32_t start_offset, next_offset, end_offset = 0; 570 uint32_t start_addr, end_addr; 571 572 addr = ed->head & OHCI_DPTR_MASK; 573 574 if (addr == 0) { 575 ohci_die(ohci); 576 return 1; 577 } 578 579 if (ohci_read_iso_td(ohci, addr, &iso_td)) { 580 trace_usb_ohci_iso_td_read_failed(addr); 581 ohci_die(ohci); 582 return 1; 583 } 584 585 starting_frame = OHCI_BM(iso_td.flags, TD_SF); 586 frame_count = OHCI_BM(iso_td.flags, TD_FC); 587 relative_frame_number = USUB(ohci->frame_number, starting_frame); 588 589 trace_usb_ohci_iso_td_head( 590 ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK, 591 iso_td.flags, iso_td.bp, iso_td.next, iso_td.be, 592 ohci->frame_number, starting_frame, 593 frame_count, relative_frame_number); 594 trace_usb_ohci_iso_td_head_offset( 595 iso_td.offset[0], iso_td.offset[1], 596 iso_td.offset[2], iso_td.offset[3], 597 iso_td.offset[4], iso_td.offset[5], 598 iso_td.offset[6], iso_td.offset[7]); 599 600 if (relative_frame_number < 0) { 601 trace_usb_ohci_iso_td_relative_frame_number_neg(relative_frame_number); 602 return 1; 603 } else if (relative_frame_number > frame_count) { 604 /* ISO TD expired - retire the TD to the Done Queue and continue with 605 the next ISO TD of the same ED */ 606 trace_usb_ohci_iso_td_relative_frame_number_big(relative_frame_number, 607 frame_count); 608 if (OHCI_CC_DATAOVERRUN == OHCI_BM(iso_td.flags, TD_CC)) { 609 /* avoid infinite loop */ 610 return 1; 611 } 612 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN); 613 ed->head &= ~OHCI_DPTR_MASK; 614 ed->head |= (iso_td.next & OHCI_DPTR_MASK); 615 iso_td.next = ohci->done; 616 ohci->done = addr; 617 i = OHCI_BM(iso_td.flags, TD_DI); 618 if (i < ohci->done_count) 619 ohci->done_count = i; 620 if (ohci_put_iso_td(ohci, addr, &iso_td)) { 621 ohci_die(ohci); 622 return 1; 623 } 624 return 0; 625 } 626 627 dir = OHCI_BM(ed->flags, ED_D); 628 switch (dir) { 629 case OHCI_TD_DIR_IN: 630 str = "in"; 631 pid = USB_TOKEN_IN; 632 break; 633 case OHCI_TD_DIR_OUT: 634 str = "out"; 635 pid = USB_TOKEN_OUT; 636 break; 637 case OHCI_TD_DIR_SETUP: 638 str = "setup"; 639 pid = USB_TOKEN_SETUP; 640 break; 641 default: 642 trace_usb_ohci_iso_td_bad_direction(dir); 643 return 1; 644 } 645 646 if (!iso_td.bp || !iso_td.be) { 647 trace_usb_ohci_iso_td_bad_bp_be(iso_td.bp, iso_td.be); 648 return 1; 649 } 650 651 start_offset = iso_td.offset[relative_frame_number]; 652 if (relative_frame_number < frame_count) { 653 next_offset = iso_td.offset[relative_frame_number + 1]; 654 } else { 655 next_offset = iso_td.be; 656 } 657 658 if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) || 659 ((relative_frame_number < frame_count) && 660 !(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) { 661 trace_usb_ohci_iso_td_bad_cc_not_accessed(start_offset, next_offset); 662 return 1; 663 } 664 665 if ((relative_frame_number < frame_count) && (start_offset > next_offset)) { 666 trace_usb_ohci_iso_td_bad_cc_overrun(start_offset, next_offset); 667 return 1; 668 } 669 670 if ((start_offset & 0x1000) == 0) { 671 start_addr = (iso_td.bp & OHCI_PAGE_MASK) | 672 (start_offset & OHCI_OFFSET_MASK); 673 } else { 674 start_addr = (iso_td.be & OHCI_PAGE_MASK) | 675 (start_offset & OHCI_OFFSET_MASK); 676 } 677 678 if (relative_frame_number < frame_count) { 679 end_offset = next_offset - 1; 680 if ((end_offset & 0x1000) == 0) { 681 end_addr = (iso_td.bp & OHCI_PAGE_MASK) | 682 (end_offset & OHCI_OFFSET_MASK); 683 } else { 684 end_addr = (iso_td.be & OHCI_PAGE_MASK) | 685 (end_offset & OHCI_OFFSET_MASK); 686 } 687 } else { 688 /* Last packet in the ISO TD */ 689 end_addr = next_offset; 690 } 691 692 if (start_addr > end_addr) { 693 trace_usb_ohci_iso_td_bad_cc_overrun(start_addr, end_addr); 694 return 1; 695 } 696 697 if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) { 698 len = (end_addr & OHCI_OFFSET_MASK) + 0x1001 699 - (start_addr & OHCI_OFFSET_MASK); 700 } else { 701 len = end_addr - start_addr + 1; 702 } 703 if (len > sizeof(buf)) { 704 len = sizeof(buf); 705 } 706 707 if (len && dir != OHCI_TD_DIR_IN) { 708 if (ohci_copy_iso_td(ohci, start_addr, end_addr, buf, len, 709 DMA_DIRECTION_TO_DEVICE)) { 710 ohci_die(ohci); 711 return 1; 712 } 713 } 714 715 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA)); 716 if (dev == NULL) { 717 trace_usb_ohci_td_dev_error(); 718 return 1; 719 } 720 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN)); 721 pkt = g_new0(USBPacket, 1); 722 usb_packet_init(pkt); 723 int_req = relative_frame_number == frame_count && 724 OHCI_BM(iso_td.flags, TD_DI) == 0; 725 usb_packet_setup(pkt, pid, ep, 0, addr, false, int_req); 726 usb_packet_addbuf(pkt, buf, len); 727 usb_handle_packet(dev, pkt); 728 if (pkt->status == USB_RET_ASYNC) { 729 usb_device_flush_ep_queue(dev, ep); 730 g_free(pkt); 731 return 1; 732 } 733 if (pkt->status == USB_RET_SUCCESS) { 734 ret = pkt->actual_length; 735 } else { 736 ret = pkt->status; 737 } 738 g_free(pkt); 739 740 trace_usb_ohci_iso_td_so(start_offset, end_offset, start_addr, end_addr, 741 str, len, ret); 742 743 /* Writeback */ 744 if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) { 745 /* IN transfer succeeded */ 746 if (ohci_copy_iso_td(ohci, start_addr, end_addr, buf, ret, 747 DMA_DIRECTION_FROM_DEVICE)) { 748 ohci_die(ohci); 749 return 1; 750 } 751 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 752 OHCI_CC_NOERROR); 753 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret); 754 } else if (dir == OHCI_TD_DIR_OUT && ret == len) { 755 /* OUT transfer succeeded */ 756 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 757 OHCI_CC_NOERROR); 758 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0); 759 } else { 760 if (ret > (ssize_t) len) { 761 trace_usb_ohci_iso_td_data_overrun(ret, len); 762 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 763 OHCI_CC_DATAOVERRUN); 764 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 765 len); 766 } else if (ret >= 0) { 767 trace_usb_ohci_iso_td_data_underrun(ret); 768 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 769 OHCI_CC_DATAUNDERRUN); 770 } else { 771 switch (ret) { 772 case USB_RET_IOERROR: 773 case USB_RET_NODEV: 774 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 775 OHCI_CC_DEVICENOTRESPONDING); 776 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 777 0); 778 break; 779 case USB_RET_NAK: 780 case USB_RET_STALL: 781 trace_usb_ohci_iso_td_nak(ret); 782 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 783 OHCI_CC_STALL); 784 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 785 0); 786 break; 787 default: 788 trace_usb_ohci_iso_td_bad_response(ret); 789 OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC, 790 OHCI_CC_UNDEXPETEDPID); 791 break; 792 } 793 } 794 } 795 796 if (relative_frame_number == frame_count) { 797 /* Last data packet of ISO TD - retire the TD to the Done Queue */ 798 OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR); 799 ed->head &= ~OHCI_DPTR_MASK; 800 ed->head |= (iso_td.next & OHCI_DPTR_MASK); 801 iso_td.next = ohci->done; 802 ohci->done = addr; 803 i = OHCI_BM(iso_td.flags, TD_DI); 804 if (i < ohci->done_count) 805 ohci->done_count = i; 806 } 807 if (ohci_put_iso_td(ohci, addr, &iso_td)) { 808 ohci_die(ohci); 809 } 810 return 1; 811 } 812 813 #define HEX_CHAR_PER_LINE 16 814 815 static void ohci_td_pkt(const char *msg, const uint8_t *buf, size_t len) 816 { 817 bool print16; 818 bool printall; 819 int i; 820 char tmp[3 * HEX_CHAR_PER_LINE + 1]; 821 char *p = tmp; 822 823 print16 = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_SHORT); 824 printall = !!trace_event_get_state_backends(TRACE_USB_OHCI_TD_PKT_FULL); 825 826 if (!printall && !print16) { 827 return; 828 } 829 830 for (i = 0; ; i++) { 831 if (i && (!(i % HEX_CHAR_PER_LINE) || (i == len))) { 832 if (!printall) { 833 trace_usb_ohci_td_pkt_short(msg, tmp); 834 break; 835 } 836 trace_usb_ohci_td_pkt_full(msg, tmp); 837 p = tmp; 838 *p = 0; 839 } 840 if (i == len) { 841 break; 842 } 843 844 p += sprintf(p, " %.2x", buf[i]); 845 } 846 } 847 848 /* Service a transport descriptor. 849 Returns nonzero to terminate processing of this endpoint. */ 850 851 static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed) 852 { 853 int dir; 854 size_t len = 0, pktlen = 0; 855 const char *str = NULL; 856 int pid; 857 int ret; 858 int i; 859 USBDevice *dev; 860 USBEndpoint *ep; 861 struct ohci_td td; 862 uint32_t addr; 863 int flag_r; 864 int completion; 865 866 addr = ed->head & OHCI_DPTR_MASK; 867 if (addr == 0) { 868 ohci_die(ohci); 869 return 1; 870 } 871 872 /* See if this TD has already been submitted to the device. */ 873 completion = (addr == ohci->async_td); 874 if (completion && !ohci->async_complete) { 875 trace_usb_ohci_td_skip_async(); 876 return 1; 877 } 878 if (ohci_read_td(ohci, addr, &td)) { 879 trace_usb_ohci_td_read_error(addr); 880 ohci_die(ohci); 881 return 1; 882 } 883 884 dir = OHCI_BM(ed->flags, ED_D); 885 switch (dir) { 886 case OHCI_TD_DIR_OUT: 887 case OHCI_TD_DIR_IN: 888 /* Same value. */ 889 break; 890 default: 891 dir = OHCI_BM(td.flags, TD_DP); 892 break; 893 } 894 895 switch (dir) { 896 case OHCI_TD_DIR_IN: 897 str = "in"; 898 pid = USB_TOKEN_IN; 899 break; 900 case OHCI_TD_DIR_OUT: 901 str = "out"; 902 pid = USB_TOKEN_OUT; 903 break; 904 case OHCI_TD_DIR_SETUP: 905 str = "setup"; 906 pid = USB_TOKEN_SETUP; 907 break; 908 default: 909 trace_usb_ohci_td_bad_direction(dir); 910 return 1; 911 } 912 if (td.cbp && td.be) { 913 if ((td.cbp & 0xfffff000) != (td.be & 0xfffff000)) { 914 len = (td.be & 0xfff) + 0x1001 - (td.cbp & 0xfff); 915 } else { 916 if (td.cbp > td.be) { 917 trace_usb_ohci_iso_td_bad_cc_overrun(td.cbp, td.be); 918 ohci_die(ohci); 919 return 1; 920 } 921 len = (td.be - td.cbp) + 1; 922 } 923 if (len > sizeof(ohci->usb_buf)) { 924 len = sizeof(ohci->usb_buf); 925 } 926 927 pktlen = len; 928 if (len && dir != OHCI_TD_DIR_IN) { 929 /* The endpoint may not allow us to transfer it all now */ 930 pktlen = (ed->flags & OHCI_ED_MPS_MASK) >> OHCI_ED_MPS_SHIFT; 931 if (pktlen > len) { 932 pktlen = len; 933 } 934 if (!completion) { 935 if (ohci_copy_td(ohci, &td, ohci->usb_buf, pktlen, 936 DMA_DIRECTION_TO_DEVICE)) { 937 ohci_die(ohci); 938 } 939 } 940 } 941 } 942 943 flag_r = (td.flags & OHCI_TD_R) != 0; 944 trace_usb_ohci_td_pkt_hdr(addr, (int64_t)pktlen, (int64_t)len, str, 945 flag_r, td.cbp, td.be); 946 ohci_td_pkt("OUT", ohci->usb_buf, pktlen); 947 948 if (completion) { 949 ohci->async_td = 0; 950 ohci->async_complete = false; 951 } else { 952 dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA)); 953 if (dev == NULL) { 954 trace_usb_ohci_td_dev_error(); 955 return 1; 956 } 957 ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN)); 958 if (ohci->async_td) { 959 /* ??? The hardware should allow one active packet per 960 endpoint. We only allow one active packet per controller. 961 This should be sufficient as long as devices respond in a 962 timely manner. 963 */ 964 trace_usb_ohci_td_too_many_pending(ep->nr); 965 return 1; 966 } 967 usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r, 968 OHCI_BM(td.flags, TD_DI) == 0); 969 usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, pktlen); 970 usb_handle_packet(dev, &ohci->usb_packet); 971 trace_usb_ohci_td_packet_status(ohci->usb_packet.status); 972 973 if (ohci->usb_packet.status == USB_RET_ASYNC) { 974 usb_device_flush_ep_queue(dev, ep); 975 ohci->async_td = addr; 976 return 1; 977 } 978 } 979 if (ohci->usb_packet.status == USB_RET_SUCCESS) { 980 ret = ohci->usb_packet.actual_length; 981 } else { 982 ret = ohci->usb_packet.status; 983 } 984 985 if (ret >= 0) { 986 if (dir == OHCI_TD_DIR_IN) { 987 if (ohci_copy_td(ohci, &td, ohci->usb_buf, ret, 988 DMA_DIRECTION_FROM_DEVICE)) { 989 ohci_die(ohci); 990 } 991 ohci_td_pkt("IN", ohci->usb_buf, pktlen); 992 } else { 993 ret = pktlen; 994 } 995 } 996 997 /* Writeback */ 998 if (ret == pktlen || (dir == OHCI_TD_DIR_IN && ret >= 0 && flag_r)) { 999 /* Transmission succeeded. */ 1000 if (ret == len) { 1001 td.cbp = 0; 1002 } else { 1003 if ((td.cbp & 0xfff) + ret > 0xfff) { 1004 td.cbp = (td.be & ~0xfff) + ((td.cbp + ret) & 0xfff); 1005 } else { 1006 td.cbp += ret; 1007 } 1008 } 1009 td.flags |= OHCI_TD_T1; 1010 td.flags ^= OHCI_TD_T0; 1011 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_NOERROR); 1012 OHCI_SET_BM(td.flags, TD_EC, 0); 1013 1014 if ((dir != OHCI_TD_DIR_IN) && (ret != len)) { 1015 /* Partial packet transfer: TD not ready to retire yet */ 1016 goto exit_no_retire; 1017 } 1018 1019 /* Setting ED_C is part of the TD retirement process */ 1020 ed->head &= ~OHCI_ED_C; 1021 if (td.flags & OHCI_TD_T0) 1022 ed->head |= OHCI_ED_C; 1023 } else { 1024 if (ret >= 0) { 1025 trace_usb_ohci_td_underrun(); 1026 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN); 1027 } else { 1028 switch (ret) { 1029 case USB_RET_IOERROR: 1030 case USB_RET_NODEV: 1031 trace_usb_ohci_td_dev_error(); 1032 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING); 1033 break; 1034 case USB_RET_NAK: 1035 trace_usb_ohci_td_nak(); 1036 return 1; 1037 case USB_RET_STALL: 1038 trace_usb_ohci_td_stall(); 1039 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_STALL); 1040 break; 1041 case USB_RET_BABBLE: 1042 trace_usb_ohci_td_babble(); 1043 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAOVERRUN); 1044 break; 1045 default: 1046 trace_usb_ohci_td_bad_device_response(ret); 1047 OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_UNDEXPETEDPID); 1048 OHCI_SET_BM(td.flags, TD_EC, 3); 1049 break; 1050 } 1051 /* An error occurred so we have to clear the interrupt counter. See 1052 * spec at 6.4.4 on page 104 */ 1053 ohci->done_count = 0; 1054 } 1055 ed->head |= OHCI_ED_H; 1056 } 1057 1058 /* Retire this TD */ 1059 ed->head &= ~OHCI_DPTR_MASK; 1060 ed->head |= td.next & OHCI_DPTR_MASK; 1061 td.next = ohci->done; 1062 ohci->done = addr; 1063 i = OHCI_BM(td.flags, TD_DI); 1064 if (i < ohci->done_count) 1065 ohci->done_count = i; 1066 exit_no_retire: 1067 if (ohci_put_td(ohci, addr, &td)) { 1068 ohci_die(ohci); 1069 return 1; 1070 } 1071 return OHCI_BM(td.flags, TD_CC) != OHCI_CC_NOERROR; 1072 } 1073 1074 /* Service an endpoint list. Returns nonzero if active TD were found. */ 1075 static int ohci_service_ed_list(OHCIState *ohci, uint32_t head) 1076 { 1077 struct ohci_ed ed; 1078 uint32_t next_ed; 1079 uint32_t cur; 1080 int active; 1081 uint32_t link_cnt = 0; 1082 active = 0; 1083 1084 if (head == 0) 1085 return 0; 1086 1087 for (cur = head; cur && link_cnt++ < ED_LINK_LIMIT; cur = next_ed) { 1088 if (ohci_read_ed(ohci, cur, &ed)) { 1089 trace_usb_ohci_ed_read_error(cur); 1090 ohci_die(ohci); 1091 return 0; 1092 } 1093 1094 next_ed = ed.next & OHCI_DPTR_MASK; 1095 1096 if ((ed.head & OHCI_ED_H) || (ed.flags & OHCI_ED_K)) { 1097 uint32_t addr; 1098 /* Cancel pending packets for ED that have been paused. */ 1099 addr = ed.head & OHCI_DPTR_MASK; 1100 if (ohci->async_td && addr == ohci->async_td) { 1101 usb_cancel_packet(&ohci->usb_packet); 1102 ohci->async_td = 0; 1103 usb_device_ep_stopped(ohci->usb_packet.ep->dev, 1104 ohci->usb_packet.ep); 1105 } 1106 continue; 1107 } 1108 1109 while ((ed.head & OHCI_DPTR_MASK) != ed.tail) { 1110 trace_usb_ohci_ed_pkt(cur, (ed.head & OHCI_ED_H) != 0, 1111 (ed.head & OHCI_ED_C) != 0, ed.head & OHCI_DPTR_MASK, 1112 ed.tail & OHCI_DPTR_MASK, ed.next & OHCI_DPTR_MASK); 1113 trace_usb_ohci_ed_pkt_flags( 1114 OHCI_BM(ed.flags, ED_FA), OHCI_BM(ed.flags, ED_EN), 1115 OHCI_BM(ed.flags, ED_D), (ed.flags & OHCI_ED_S)!= 0, 1116 (ed.flags & OHCI_ED_K) != 0, (ed.flags & OHCI_ED_F) != 0, 1117 OHCI_BM(ed.flags, ED_MPS)); 1118 1119 active = 1; 1120 1121 if ((ed.flags & OHCI_ED_F) == 0) { 1122 if (ohci_service_td(ohci, &ed)) 1123 break; 1124 } else { 1125 /* Handle isochronous endpoints */ 1126 if (ohci_service_iso_td(ohci, &ed)) { 1127 break; 1128 } 1129 } 1130 } 1131 1132 if (ohci_put_ed(ohci, cur, &ed)) { 1133 ohci_die(ohci); 1134 return 0; 1135 } 1136 } 1137 1138 return active; 1139 } 1140 1141 /* set a timer for EOF */ 1142 static void ohci_eof_timer(OHCIState *ohci) 1143 { 1144 timer_mod(ohci->eof_timer, ohci->sof_time + usb_frame_time); 1145 } 1146 /* Set a timer for EOF and generate a SOF event */ 1147 static void ohci_sof(OHCIState *ohci) 1148 { 1149 ohci->sof_time += usb_frame_time; 1150 ohci_eof_timer(ohci); 1151 ohci_set_interrupt(ohci, OHCI_INTR_SF); 1152 } 1153 1154 /* Process Control and Bulk lists. */ 1155 static void ohci_process_lists(OHCIState *ohci) 1156 { 1157 if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) { 1158 if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head) { 1159 trace_usb_ohci_process_lists(ohci->ctrl_head, ohci->ctrl_cur); 1160 } 1161 if (!ohci_service_ed_list(ohci, ohci->ctrl_head)) { 1162 ohci->ctrl_cur = 0; 1163 ohci->status &= ~OHCI_STATUS_CLF; 1164 } 1165 } 1166 1167 if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) { 1168 if (!ohci_service_ed_list(ohci, ohci->bulk_head)) { 1169 ohci->bulk_cur = 0; 1170 ohci->status &= ~OHCI_STATUS_BLF; 1171 } 1172 } 1173 } 1174 1175 /* Do frame processing on frame boundary */ 1176 static void ohci_frame_boundary(void *opaque) 1177 { 1178 OHCIState *ohci = opaque; 1179 struct ohci_hcca hcca; 1180 1181 if (ohci_read_hcca(ohci, ohci->hcca, &hcca)) { 1182 trace_usb_ohci_hcca_read_error(ohci->hcca); 1183 ohci_die(ohci); 1184 return; 1185 } 1186 1187 /* Process all the lists at the end of the frame */ 1188 if (ohci->ctl & OHCI_CTL_PLE) { 1189 int n; 1190 1191 n = ohci->frame_number & 0x1f; 1192 ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n])); 1193 } 1194 1195 /* Cancel all pending packets if either of the lists has been disabled. */ 1196 if (ohci->old_ctl & (~ohci->ctl) & (OHCI_CTL_BLE | OHCI_CTL_CLE)) { 1197 ohci_stop_endpoints(ohci); 1198 } 1199 ohci->old_ctl = ohci->ctl; 1200 ohci_process_lists(ohci); 1201 1202 /* Stop if UnrecoverableError happened or ohci_sof will crash */ 1203 if (ohci->intr_status & OHCI_INTR_UE) { 1204 return; 1205 } 1206 1207 /* Frame boundary, so do EOF stuf here */ 1208 ohci->frt = ohci->fit; 1209 1210 /* Increment frame number and take care of endianness. */ 1211 ohci->frame_number = (ohci->frame_number + 1) & 0xffff; 1212 hcca.frame = cpu_to_le16(ohci->frame_number); 1213 1214 if (ohci->done_count == 0 && !(ohci->intr_status & OHCI_INTR_WD)) { 1215 if (!ohci->done) 1216 abort(); 1217 if (ohci->intr & ohci->intr_status) 1218 ohci->done |= 1; 1219 hcca.done = cpu_to_le32(ohci->done); 1220 ohci->done = 0; 1221 ohci->done_count = 7; 1222 ohci_set_interrupt(ohci, OHCI_INTR_WD); 1223 } 1224 1225 if (ohci->done_count != 7 && ohci->done_count != 0) 1226 ohci->done_count--; 1227 1228 /* Do SOF stuff here */ 1229 ohci_sof(ohci); 1230 1231 /* Writeback HCCA */ 1232 if (ohci_put_hcca(ohci, ohci->hcca, &hcca)) { 1233 ohci_die(ohci); 1234 } 1235 } 1236 1237 /* Start sending SOF tokens across the USB bus, lists are processed in 1238 * next frame 1239 */ 1240 static int ohci_bus_start(OHCIState *ohci) 1241 { 1242 trace_usb_ohci_start(ohci->name); 1243 1244 /* Delay the first SOF event by one frame time as 1245 * linux driver is not ready to receive it and 1246 * can meet some race conditions 1247 */ 1248 1249 ohci->sof_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 1250 ohci_eof_timer(ohci); 1251 1252 return 1; 1253 } 1254 1255 /* Stop sending SOF tokens on the bus */ 1256 void ohci_bus_stop(OHCIState *ohci) 1257 { 1258 trace_usb_ohci_stop(ohci->name); 1259 timer_del(ohci->eof_timer); 1260 } 1261 1262 /* Sets a flag in a port status register but only set it if the port is 1263 * connected, if not set ConnectStatusChange flag. If flag is enabled 1264 * return 1. 1265 */ 1266 static int ohci_port_set_if_connected(OHCIState *ohci, int i, uint32_t val) 1267 { 1268 int ret = 1; 1269 1270 /* writing a 0 has no effect */ 1271 if (val == 0) 1272 return 0; 1273 1274 /* If CurrentConnectStatus is cleared we set 1275 * ConnectStatusChange 1276 */ 1277 if (!(ohci->rhport[i].ctrl & OHCI_PORT_CCS)) { 1278 ohci->rhport[i].ctrl |= OHCI_PORT_CSC; 1279 if (ohci->rhstatus & OHCI_RHS_DRWE) { 1280 /* TODO: CSC is a wakeup event */ 1281 } 1282 return 0; 1283 } 1284 1285 if (ohci->rhport[i].ctrl & val) 1286 ret = 0; 1287 1288 /* set the bit */ 1289 ohci->rhport[i].ctrl |= val; 1290 1291 return ret; 1292 } 1293 1294 /* Set the frame interval - 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| 1312 OHCI_PORT_CCS| 1313 OHCI_PORT_PSS| 1314 OHCI_PORT_PRS); 1315 } 1316 } 1317 1318 /* Set HcControlRegister */ 1319 static void ohci_set_ctl(OHCIState *ohci, uint32_t val) 1320 { 1321 uint32_t old_state; 1322 uint32_t new_state; 1323 1324 old_state = ohci->ctl & OHCI_CTL_HCFS; 1325 ohci->ctl = val; 1326 new_state = ohci->ctl & OHCI_CTL_HCFS; 1327 1328 /* no state change */ 1329 if (old_state == new_state) 1330 return; 1331 1332 trace_usb_ohci_set_ctl(ohci->name, new_state); 1333 switch (new_state) { 1334 case OHCI_USB_OPERATIONAL: 1335 ohci_bus_start(ohci); 1336 break; 1337 case OHCI_USB_SUSPEND: 1338 ohci_bus_stop(ohci); 1339 /* clear pending SF otherwise linux driver loops in ohci_irq() */ 1340 ohci->intr_status &= ~OHCI_INTR_SF; 1341 ohci_intr_update(ohci); 1342 break; 1343 case OHCI_USB_RESUME: 1344 trace_usb_ohci_resume(ohci->name); 1345 break; 1346 case OHCI_USB_RESET: 1347 ohci_roothub_reset(ohci); 1348 break; 1349 } 1350 } 1351 1352 static uint32_t ohci_get_frame_remaining(OHCIState *ohci) 1353 { 1354 uint16_t fr; 1355 int64_t tks; 1356 1357 if ((ohci->ctl & OHCI_CTL_HCFS) != OHCI_USB_OPERATIONAL) 1358 return (ohci->frt << 31); 1359 1360 /* Being in USB operational state guarnatees sof_time was 1361 * set already. 1362 */ 1363 tks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - ohci->sof_time; 1364 if (tks < 0) { 1365 tks = 0; 1366 } 1367 1368 /* avoid muldiv if possible */ 1369 if (tks >= usb_frame_time) 1370 return (ohci->frt << 31); 1371 1372 tks = tks / usb_bit_time; 1373 fr = (uint16_t)(ohci->fi - tks); 1374 1375 return (ohci->frt << 31) | fr; 1376 } 1377 1378 1379 /* Set root hub status */ 1380 static void ohci_set_hub_status(OHCIState *ohci, uint32_t val) 1381 { 1382 uint32_t old_state; 1383 1384 old_state = ohci->rhstatus; 1385 1386 /* write 1 to clear OCIC */ 1387 if (val & OHCI_RHS_OCIC) 1388 ohci->rhstatus &= ~OHCI_RHS_OCIC; 1389 1390 if (val & OHCI_RHS_LPS) { 1391 int i; 1392 1393 for (i = 0; i < ohci->num_ports; i++) 1394 ohci_port_power(ohci, i, 0); 1395 trace_usb_ohci_hub_power_down(); 1396 } 1397 1398 if (val & OHCI_RHS_LPSC) { 1399 int i; 1400 1401 for (i = 0; i < ohci->num_ports; i++) 1402 ohci_port_power(ohci, i, 1); 1403 trace_usb_ohci_hub_power_up(); 1404 } 1405 1406 if (val & OHCI_RHS_DRWE) 1407 ohci->rhstatus |= OHCI_RHS_DRWE; 1408 1409 if (val & OHCI_RHS_CRWE) 1410 ohci->rhstatus &= ~OHCI_RHS_DRWE; 1411 1412 if (old_state != ohci->rhstatus) 1413 ohci_set_interrupt(ohci, OHCI_INTR_RHSC); 1414 } 1415 1416 /* Set root hub port status */ 1417 static void ohci_port_set_status(OHCIState *ohci, int portnum, uint32_t val) 1418 { 1419 uint32_t old_state; 1420 OHCIPort *port; 1421 1422 port = &ohci->rhport[portnum]; 1423 old_state = port->ctrl; 1424 1425 /* Write to clear CSC, PESC, PSSC, OCIC, PRSC */ 1426 if (val & OHCI_PORT_WTC) 1427 port->ctrl &= ~(val & OHCI_PORT_WTC); 1428 1429 if (val & OHCI_PORT_CCS) 1430 port->ctrl &= ~OHCI_PORT_PES; 1431 1432 ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PES); 1433 1434 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PSS)) { 1435 trace_usb_ohci_port_suspend(portnum); 1436 } 1437 1438 if (ohci_port_set_if_connected(ohci, portnum, val & OHCI_PORT_PRS)) { 1439 trace_usb_ohci_port_reset(portnum); 1440 usb_device_reset(port->port.dev); 1441 port->ctrl &= ~OHCI_PORT_PRS; 1442 /* ??? Should this also set OHCI_PORT_PESC. */ 1443 port->ctrl |= OHCI_PORT_PES | OHCI_PORT_PRSC; 1444 } 1445 1446 /* Invert order here to ensure in ambiguous case, device is 1447 * powered up... 1448 */ 1449 if (val & OHCI_PORT_LSDA) 1450 ohci_port_power(ohci, portnum, 0); 1451 if (val & OHCI_PORT_PPS) 1452 ohci_port_power(ohci, portnum, 1); 1453 1454 if (old_state != port->ctrl) 1455 ohci_set_interrupt(ohci, OHCI_INTR_RHSC); 1456 } 1457 1458 static uint64_t ohci_mem_read(void *opaque, 1459 hwaddr addr, 1460 unsigned size) 1461 { 1462 OHCIState *ohci = opaque; 1463 uint32_t retval; 1464 1465 /* Only aligned reads are allowed on OHCI */ 1466 if (addr & 3) { 1467 trace_usb_ohci_mem_read_unaligned(addr); 1468 return 0xffffffff; 1469 } else if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) { 1470 /* HcRhPortStatus */ 1471 retval = ohci->rhport[(addr - 0x54) >> 2].ctrl | OHCI_PORT_PPS; 1472 } else { 1473 switch (addr >> 2) { 1474 case 0: /* HcRevision */ 1475 retval = 0x10; 1476 break; 1477 1478 case 1: /* HcControl */ 1479 retval = ohci->ctl; 1480 break; 1481 1482 case 2: /* HcCommandStatus */ 1483 retval = ohci->status; 1484 break; 1485 1486 case 3: /* HcInterruptStatus */ 1487 retval = ohci->intr_status; 1488 break; 1489 1490 case 4: /* HcInterruptEnable */ 1491 case 5: /* HcInterruptDisable */ 1492 retval = ohci->intr; 1493 break; 1494 1495 case 6: /* HcHCCA */ 1496 retval = ohci->hcca; 1497 break; 1498 1499 case 7: /* HcPeriodCurrentED */ 1500 retval = ohci->per_cur; 1501 break; 1502 1503 case 8: /* HcControlHeadED */ 1504 retval = ohci->ctrl_head; 1505 break; 1506 1507 case 9: /* HcControlCurrentED */ 1508 retval = ohci->ctrl_cur; 1509 break; 1510 1511 case 10: /* HcBulkHeadED */ 1512 retval = ohci->bulk_head; 1513 break; 1514 1515 case 11: /* HcBulkCurrentED */ 1516 retval = ohci->bulk_cur; 1517 break; 1518 1519 case 12: /* HcDoneHead */ 1520 retval = ohci->done; 1521 break; 1522 1523 case 13: /* HcFmInterretval */ 1524 retval = (ohci->fit << 31) | (ohci->fsmps << 16) | (ohci->fi); 1525 break; 1526 1527 case 14: /* HcFmRemaining */ 1528 retval = ohci_get_frame_remaining(ohci); 1529 break; 1530 1531 case 15: /* HcFmNumber */ 1532 retval = ohci->frame_number; 1533 break; 1534 1535 case 16: /* HcPeriodicStart */ 1536 retval = ohci->pstart; 1537 break; 1538 1539 case 17: /* HcLSThreshold */ 1540 retval = ohci->lst; 1541 break; 1542 1543 case 18: /* HcRhDescriptorA */ 1544 retval = ohci->rhdesc_a; 1545 break; 1546 1547 case 19: /* HcRhDescriptorB */ 1548 retval = ohci->rhdesc_b; 1549 break; 1550 1551 case 20: /* HcRhStatus */ 1552 retval = ohci->rhstatus; 1553 break; 1554 1555 /* PXA27x specific registers */ 1556 case 24: /* HcStatus */ 1557 retval = ohci->hstatus & ohci->hmask; 1558 break; 1559 1560 case 25: /* HcHReset */ 1561 retval = ohci->hreset; 1562 break; 1563 1564 case 26: /* HcHInterruptEnable */ 1565 retval = ohci->hmask; 1566 break; 1567 1568 case 27: /* HcHInterruptTest */ 1569 retval = ohci->htest; 1570 break; 1571 1572 default: 1573 trace_usb_ohci_mem_read_bad_offset(addr); 1574 retval = 0xffffffff; 1575 } 1576 } 1577 1578 return retval; 1579 } 1580 1581 static void ohci_mem_write(void *opaque, 1582 hwaddr addr, 1583 uint64_t val, 1584 unsigned size) 1585 { 1586 OHCIState *ohci = opaque; 1587 1588 /* Only aligned reads are allowed on OHCI */ 1589 if (addr & 3) { 1590 trace_usb_ohci_mem_write_unaligned(addr); 1591 return; 1592 } 1593 1594 if (addr >= 0x54 && addr < 0x54 + ohci->num_ports * 4) { 1595 /* HcRhPortStatus */ 1596 ohci_port_set_status(ohci, (addr - 0x54) >> 2, val); 1597 return; 1598 } 1599 1600 switch (addr >> 2) { 1601 case 1: /* HcControl */ 1602 ohci_set_ctl(ohci, val); 1603 break; 1604 1605 case 2: /* HcCommandStatus */ 1606 /* SOC is read-only */ 1607 val = (val & ~OHCI_STATUS_SOC); 1608 1609 /* Bits written as '0' remain unchanged in the register */ 1610 ohci->status |= val; 1611 1612 if (ohci->status & OHCI_STATUS_HCR) 1613 ohci_soft_reset(ohci); 1614 break; 1615 1616 case 3: /* HcInterruptStatus */ 1617 ohci->intr_status &= ~val; 1618 ohci_intr_update(ohci); 1619 break; 1620 1621 case 4: /* HcInterruptEnable */ 1622 ohci->intr |= val; 1623 ohci_intr_update(ohci); 1624 break; 1625 1626 case 5: /* HcInterruptDisable */ 1627 ohci->intr &= ~val; 1628 ohci_intr_update(ohci); 1629 break; 1630 1631 case 6: /* HcHCCA */ 1632 ohci->hcca = val & OHCI_HCCA_MASK; 1633 break; 1634 1635 case 7: /* HcPeriodCurrentED */ 1636 /* Ignore writes to this read-only register, Linux does them */ 1637 break; 1638 1639 case 8: /* HcControlHeadED */ 1640 ohci->ctrl_head = val & OHCI_EDPTR_MASK; 1641 break; 1642 1643 case 9: /* HcControlCurrentED */ 1644 ohci->ctrl_cur = val & OHCI_EDPTR_MASK; 1645 break; 1646 1647 case 10: /* HcBulkHeadED */ 1648 ohci->bulk_head = val & OHCI_EDPTR_MASK; 1649 break; 1650 1651 case 11: /* HcBulkCurrentED */ 1652 ohci->bulk_cur = val & OHCI_EDPTR_MASK; 1653 break; 1654 1655 case 13: /* HcFmInterval */ 1656 ohci->fsmps = (val & OHCI_FMI_FSMPS) >> 16; 1657 ohci->fit = (val & OHCI_FMI_FIT) >> 31; 1658 ohci_set_frame_interval(ohci, val); 1659 break; 1660 1661 case 15: /* HcFmNumber */ 1662 break; 1663 1664 case 16: /* HcPeriodicStart */ 1665 ohci->pstart = val & 0xffff; 1666 break; 1667 1668 case 17: /* HcLSThreshold */ 1669 ohci->lst = val & 0xffff; 1670 break; 1671 1672 case 18: /* HcRhDescriptorA */ 1673 ohci->rhdesc_a &= ~OHCI_RHA_RW_MASK; 1674 ohci->rhdesc_a |= val & OHCI_RHA_RW_MASK; 1675 break; 1676 1677 case 19: /* HcRhDescriptorB */ 1678 break; 1679 1680 case 20: /* HcRhStatus */ 1681 ohci_set_hub_status(ohci, val); 1682 break; 1683 1684 /* PXA27x specific registers */ 1685 case 24: /* HcStatus */ 1686 ohci->hstatus &= ~(val & ohci->hmask); 1687 break; 1688 1689 case 25: /* HcHReset */ 1690 ohci->hreset = val & ~OHCI_HRESET_FSBIR; 1691 if (val & OHCI_HRESET_FSBIR) 1692 ohci_hard_reset(ohci); 1693 break; 1694 1695 case 26: /* HcHInterruptEnable */ 1696 ohci->hmask = val; 1697 break; 1698 1699 case 27: /* HcHInterruptTest */ 1700 ohci->htest = val; 1701 break; 1702 1703 default: 1704 trace_usb_ohci_mem_write_bad_offset(addr); 1705 break; 1706 } 1707 } 1708 1709 static const MemoryRegionOps ohci_mem_ops = { 1710 .read = ohci_mem_read, 1711 .write = ohci_mem_write, 1712 .endianness = DEVICE_LITTLE_ENDIAN, 1713 }; 1714 1715 /* USBPortOps */ 1716 static void ohci_attach(USBPort *port1) 1717 { 1718 OHCIState *s = port1->opaque; 1719 OHCIPort *port = &s->rhport[port1->index]; 1720 uint32_t old_state = port->ctrl; 1721 1722 /* set connect status */ 1723 port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC; 1724 1725 /* update speed */ 1726 if (port->port.dev->speed == USB_SPEED_LOW) { 1727 port->ctrl |= OHCI_PORT_LSDA; 1728 } else { 1729 port->ctrl &= ~OHCI_PORT_LSDA; 1730 } 1731 1732 /* notify of remote-wakeup */ 1733 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) { 1734 ohci_set_interrupt(s, OHCI_INTR_RD); 1735 } 1736 1737 trace_usb_ohci_port_attach(port1->index); 1738 1739 if (old_state != port->ctrl) { 1740 ohci_set_interrupt(s, OHCI_INTR_RHSC); 1741 } 1742 } 1743 1744 static void ohci_child_detach(USBPort *port1, USBDevice *dev) 1745 { 1746 OHCIState *ohci = port1->opaque; 1747 1748 if (ohci->async_td && 1749 usb_packet_is_inflight(&ohci->usb_packet) && 1750 ohci->usb_packet.ep->dev == dev) { 1751 usb_cancel_packet(&ohci->usb_packet); 1752 ohci->async_td = 0; 1753 } 1754 } 1755 1756 static void ohci_detach(USBPort *port1) 1757 { 1758 OHCIState *s = port1->opaque; 1759 OHCIPort *port = &s->rhport[port1->index]; 1760 uint32_t old_state = port->ctrl; 1761 1762 ohci_child_detach(port1, port1->dev); 1763 1764 /* set connect status */ 1765 if (port->ctrl & OHCI_PORT_CCS) { 1766 port->ctrl &= ~OHCI_PORT_CCS; 1767 port->ctrl |= OHCI_PORT_CSC; 1768 } 1769 /* disable port */ 1770 if (port->ctrl & OHCI_PORT_PES) { 1771 port->ctrl &= ~OHCI_PORT_PES; 1772 port->ctrl |= OHCI_PORT_PESC; 1773 } 1774 trace_usb_ohci_port_detach(port1->index); 1775 1776 if (old_state != port->ctrl) { 1777 ohci_set_interrupt(s, OHCI_INTR_RHSC); 1778 } 1779 } 1780 1781 static void ohci_wakeup(USBPort *port1) 1782 { 1783 OHCIState *s = port1->opaque; 1784 OHCIPort *port = &s->rhport[port1->index]; 1785 uint32_t intr = 0; 1786 if (port->ctrl & OHCI_PORT_PSS) { 1787 trace_usb_ohci_port_wakeup(port1->index); 1788 port->ctrl |= OHCI_PORT_PSSC; 1789 port->ctrl &= ~OHCI_PORT_PSS; 1790 intr = OHCI_INTR_RHSC; 1791 } 1792 /* Note that the controller can be suspended even if this port is not */ 1793 if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) { 1794 trace_usb_ohci_remote_wakeup(s->name); 1795 /* This is the one state transition the controller can do by itself */ 1796 s->ctl &= ~OHCI_CTL_HCFS; 1797 s->ctl |= OHCI_USB_RESUME; 1798 /* 1799 * In suspend mode only ResumeDetected is possible, not RHSC: 1800 * see the OHCI spec 5.1.2.3. 1801 */ 1802 intr = OHCI_INTR_RD; 1803 } 1804 ohci_set_interrupt(s, intr); 1805 } 1806 1807 static void ohci_async_complete_packet(USBPort *port, USBPacket *packet) 1808 { 1809 OHCIState *ohci = container_of(packet, OHCIState, usb_packet); 1810 1811 trace_usb_ohci_async_complete(); 1812 ohci->async_complete = true; 1813 ohci_process_lists(ohci); 1814 } 1815 1816 static USBPortOps ohci_port_ops = { 1817 .attach = ohci_attach, 1818 .detach = ohci_detach, 1819 .child_detach = ohci_child_detach, 1820 .wakeup = ohci_wakeup, 1821 .complete = ohci_async_complete_packet, 1822 }; 1823 1824 static USBBusOps ohci_bus_ops = { 1825 }; 1826 1827 void usb_ohci_init(OHCIState *ohci, DeviceState *dev, uint32_t num_ports, 1828 dma_addr_t localmem_base, char *masterbus, 1829 uint32_t firstport, AddressSpace *as, 1830 void (*ohci_die_fn)(struct OHCIState *), Error **errp) 1831 { 1832 Error *err = NULL; 1833 int i; 1834 1835 ohci->as = as; 1836 ohci->ohci_die = ohci_die_fn; 1837 1838 if (num_ports > OHCI_MAX_PORTS) { 1839 error_setg(errp, "OHCI num-ports=%u is too big (limit is %u ports)", 1840 num_ports, OHCI_MAX_PORTS); 1841 return; 1842 } 1843 1844 if (usb_frame_time == 0) { 1845 #ifdef OHCI_TIME_WARP 1846 usb_frame_time = NANOSECONDS_PER_SECOND; 1847 usb_bit_time = NANOSECONDS_PER_SECOND / (USB_HZ / 1000); 1848 #else 1849 usb_frame_time = NANOSECONDS_PER_SECOND / 1000; 1850 if (NANOSECONDS_PER_SECOND >= USB_HZ) { 1851 usb_bit_time = NANOSECONDS_PER_SECOND / USB_HZ; 1852 } else { 1853 usb_bit_time = 1; 1854 } 1855 #endif 1856 trace_usb_ohci_init_time(usb_frame_time, usb_bit_time); 1857 } 1858 1859 ohci->num_ports = num_ports; 1860 if (masterbus) { 1861 USBPort *ports[OHCI_MAX_PORTS]; 1862 for(i = 0; i < num_ports; i++) { 1863 ports[i] = &ohci->rhport[i].port; 1864 } 1865 usb_register_companion(masterbus, ports, num_ports, 1866 firstport, ohci, &ohci_port_ops, 1867 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL, 1868 &err); 1869 if (err) { 1870 error_propagate(errp, err); 1871 return; 1872 } 1873 } else { 1874 usb_bus_new(&ohci->bus, sizeof(ohci->bus), &ohci_bus_ops, dev); 1875 for (i = 0; i < num_ports; i++) { 1876 usb_register_port(&ohci->bus, &ohci->rhport[i].port, 1877 ohci, i, &ohci_port_ops, 1878 USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL); 1879 } 1880 } 1881 1882 memory_region_init_io(&ohci->mem, OBJECT(dev), &ohci_mem_ops, 1883 ohci, "ohci", 256); 1884 ohci->localmem_base = localmem_base; 1885 1886 ohci->name = object_get_typename(OBJECT(dev)); 1887 usb_packet_init(&ohci->usb_packet); 1888 1889 ohci->async_td = 0; 1890 1891 ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, 1892 ohci_frame_boundary, ohci); 1893 } 1894 1895 /** 1896 * A typical OHCI will stop operating and set itself into error state 1897 * (which can be queried by MMIO) to signal that it got an error. 1898 */ 1899 void ohci_sysbus_die(struct OHCIState *ohci) 1900 { 1901 trace_usb_ohci_die(); 1902 1903 ohci_set_interrupt(ohci, OHCI_INTR_UE); 1904 ohci_bus_stop(ohci); 1905 } 1906 1907 static void ohci_realize_pxa(DeviceState *dev, Error **errp) 1908 { 1909 OHCISysBusState *s = SYSBUS_OHCI(dev); 1910 SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 1911 Error *err = NULL; 1912 1913 usb_ohci_init(&s->ohci, dev, s->num_ports, s->dma_offset, 1914 s->masterbus, s->firstport, 1915 &address_space_memory, ohci_sysbus_die, &err); 1916 if (err) { 1917 error_propagate(errp, err); 1918 return; 1919 } 1920 sysbus_init_irq(sbd, &s->ohci.irq); 1921 sysbus_init_mmio(sbd, &s->ohci.mem); 1922 } 1923 1924 static void usb_ohci_reset_sysbus(DeviceState *dev) 1925 { 1926 OHCISysBusState *s = SYSBUS_OHCI(dev); 1927 OHCIState *ohci = &s->ohci; 1928 1929 ohci_hard_reset(ohci); 1930 } 1931 1932 static const VMStateDescription vmstate_ohci_state_port = { 1933 .name = "ohci-core/port", 1934 .version_id = 1, 1935 .minimum_version_id = 1, 1936 .fields = (VMStateField[]) { 1937 VMSTATE_UINT32(ctrl, OHCIPort), 1938 VMSTATE_END_OF_LIST() 1939 }, 1940 }; 1941 1942 static bool ohci_eof_timer_needed(void *opaque) 1943 { 1944 OHCIState *ohci = opaque; 1945 1946 return timer_pending(ohci->eof_timer); 1947 } 1948 1949 static const VMStateDescription vmstate_ohci_eof_timer = { 1950 .name = "ohci-core/eof-timer", 1951 .version_id = 1, 1952 .minimum_version_id = 1, 1953 .needed = ohci_eof_timer_needed, 1954 .fields = (VMStateField[]) { 1955 VMSTATE_TIMER_PTR(eof_timer, OHCIState), 1956 VMSTATE_END_OF_LIST() 1957 }, 1958 }; 1959 1960 const VMStateDescription vmstate_ohci_state = { 1961 .name = "ohci-core", 1962 .version_id = 1, 1963 .minimum_version_id = 1, 1964 .fields = (VMStateField[]) { 1965 VMSTATE_INT64(sof_time, OHCIState), 1966 VMSTATE_UINT32(ctl, OHCIState), 1967 VMSTATE_UINT32(status, OHCIState), 1968 VMSTATE_UINT32(intr_status, OHCIState), 1969 VMSTATE_UINT32(intr, OHCIState), 1970 VMSTATE_UINT32(hcca, OHCIState), 1971 VMSTATE_UINT32(ctrl_head, OHCIState), 1972 VMSTATE_UINT32(ctrl_cur, OHCIState), 1973 VMSTATE_UINT32(bulk_head, OHCIState), 1974 VMSTATE_UINT32(bulk_cur, OHCIState), 1975 VMSTATE_UINT32(per_cur, OHCIState), 1976 VMSTATE_UINT32(done, OHCIState), 1977 VMSTATE_INT32(done_count, OHCIState), 1978 VMSTATE_UINT16(fsmps, OHCIState), 1979 VMSTATE_UINT8(fit, OHCIState), 1980 VMSTATE_UINT16(fi, OHCIState), 1981 VMSTATE_UINT8(frt, OHCIState), 1982 VMSTATE_UINT16(frame_number, OHCIState), 1983 VMSTATE_UINT16(padding, OHCIState), 1984 VMSTATE_UINT32(pstart, OHCIState), 1985 VMSTATE_UINT32(lst, OHCIState), 1986 VMSTATE_UINT32(rhdesc_a, OHCIState), 1987 VMSTATE_UINT32(rhdesc_b, OHCIState), 1988 VMSTATE_UINT32(rhstatus, OHCIState), 1989 VMSTATE_STRUCT_ARRAY(rhport, OHCIState, OHCI_MAX_PORTS, 0, 1990 vmstate_ohci_state_port, OHCIPort), 1991 VMSTATE_UINT32(hstatus, OHCIState), 1992 VMSTATE_UINT32(hmask, OHCIState), 1993 VMSTATE_UINT32(hreset, OHCIState), 1994 VMSTATE_UINT32(htest, OHCIState), 1995 VMSTATE_UINT32(old_ctl, OHCIState), 1996 VMSTATE_UINT8_ARRAY(usb_buf, OHCIState, 8192), 1997 VMSTATE_UINT32(async_td, OHCIState), 1998 VMSTATE_BOOL(async_complete, OHCIState), 1999 VMSTATE_END_OF_LIST() 2000 }, 2001 .subsections = (const VMStateDescription*[]) { 2002 &vmstate_ohci_eof_timer, 2003 NULL 2004 } 2005 }; 2006 2007 static Property ohci_sysbus_properties[] = { 2008 DEFINE_PROP_STRING("masterbus", OHCISysBusState, masterbus), 2009 DEFINE_PROP_UINT32("num-ports", OHCISysBusState, num_ports, 3), 2010 DEFINE_PROP_UINT32("firstport", OHCISysBusState, firstport, 0), 2011 DEFINE_PROP_DMAADDR("dma-offset", OHCISysBusState, dma_offset, 0), 2012 DEFINE_PROP_END_OF_LIST(), 2013 }; 2014 2015 static void ohci_sysbus_class_init(ObjectClass *klass, void *data) 2016 { 2017 DeviceClass *dc = DEVICE_CLASS(klass); 2018 2019 dc->realize = ohci_realize_pxa; 2020 set_bit(DEVICE_CATEGORY_USB, dc->categories); 2021 dc->desc = "OHCI USB Controller"; 2022 device_class_set_props(dc, ohci_sysbus_properties); 2023 dc->reset = usb_ohci_reset_sysbus; 2024 } 2025 2026 static const TypeInfo ohci_sysbus_info = { 2027 .name = TYPE_SYSBUS_OHCI, 2028 .parent = TYPE_SYS_BUS_DEVICE, 2029 .instance_size = sizeof(OHCISysBusState), 2030 .class_init = ohci_sysbus_class_init, 2031 }; 2032 2033 static void ohci_register_types(void) 2034 { 2035 type_register_static(&ohci_sysbus_info); 2036 } 2037 2038 type_init(ohci_register_types) 2039