ohci.c revision 1.71
1 /* $NetBSD: ohci.c,v 1.71 2000/02/01 05:42:52 augustss Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/ohci.c,v 1.22 1999/11/17 22:33:40 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (augustss (at) carlstedt.se) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * USB Open Host Controller driver. 43 * 44 * OHCI spec: ftp://ftp.compaq.com/pub/supportinformation/papers/hcir1_0a.exe 45 * USB spec: http://www.usb.org/developers/data/usb11.pdf 46 */ 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/malloc.h> 51 #if defined(__NetBSD__) || defined(__OpenBSD__) 52 #include <sys/kernel.h> 53 #include <sys/device.h> 54 #include <sys/select.h> 55 #elif defined(__FreeBSD__) 56 #include <sys/module.h> 57 #include <sys/bus.h> 58 #include <machine/bus_pio.h> 59 #include <machine/bus_memio.h> 60 #if defined(DIAGNOSTIC) && defined(__i386__) && defined(__FreeBSD__) 61 #include <machine/cpu.h> 62 #endif 63 #endif 64 #include <sys/proc.h> 65 #include <sys/queue.h> 66 67 #include <machine/bus.h> 68 #include <machine/endian.h> 69 70 #include <dev/usb/usb.h> 71 #include <dev/usb/usbdi.h> 72 #include <dev/usb/usbdivar.h> 73 #include <dev/usb/usb_mem.h> 74 #include <dev/usb/usb_quirks.h> 75 76 #include <dev/usb/ohcireg.h> 77 #include <dev/usb/ohcivar.h> 78 79 #if defined(__FreeBSD__) 80 #include <machine/clock.h> 81 82 #define delay(d) DELAY(d) 83 #endif 84 85 #if defined(__OpenBSD__) 86 struct cfdriver ohci_cd = { 87 NULL, "ohci", DV_DULL 88 }; 89 #endif 90 91 #ifdef OHCI_DEBUG 92 #define DPRINTF(x) if (ohcidebug) logprintf x 93 #define DPRINTFN(n,x) if (ohcidebug>(n)) logprintf x 94 int ohcidebug = 0; 95 #else 96 #define DPRINTF(x) 97 #define DPRINTFN(n,x) 98 #endif 99 100 /* 101 * The OHCI controller is little endian, so on big endian machines 102 * the data strored in memory needs to be swapped. 103 */ 104 #if BYTE_ORDER == BIG_ENDIAN 105 #define LE(x) (bswap32(x)) 106 #else 107 #define LE(x) (x) 108 #endif 109 110 struct ohci_pipe; 111 112 static ohci_soft_ed_t *ohci_alloc_sed __P((ohci_softc_t *)); 113 static void ohci_free_sed __P((ohci_softc_t *, ohci_soft_ed_t *)); 114 115 static ohci_soft_td_t *ohci_alloc_std __P((ohci_softc_t *)); 116 static void ohci_free_std __P((ohci_softc_t *, ohci_soft_td_t *)); 117 118 static ohci_soft_itd_t *ohci_alloc_sitd __P((ohci_softc_t *)); 119 static void ohci_free_sitd __P((ohci_softc_t *,ohci_soft_itd_t *)); 120 121 #if 0 122 static void ohci_free_std_chain __P((ohci_softc_t *, 123 ohci_soft_td_t *, ohci_soft_td_t *)); 124 #endif 125 static usbd_status ohci_alloc_std_chain __P((struct ohci_pipe *, 126 ohci_softc_t *, int, int, u_int16_t, usb_dma_t *, 127 ohci_soft_td_t *, ohci_soft_td_t **)); 128 129 static void ohci_shutdown __P((void *v)); 130 static void ohci_power __P((int, void *)); 131 static usbd_status ohci_open __P((usbd_pipe_handle)); 132 static void ohci_poll __P((struct usbd_bus *)); 133 static void ohci_waitintr __P((ohci_softc_t *, 134 usbd_xfer_handle)); 135 static void ohci_rhsc __P((ohci_softc_t *, usbd_xfer_handle)); 136 static void ohci_process_done __P((ohci_softc_t *, 137 ohci_physaddr_t)); 138 139 static usbd_status ohci_device_request __P((usbd_xfer_handle xfer)); 140 static void ohci_add_ed __P((ohci_soft_ed_t *, ohci_soft_ed_t *)); 141 static void ohci_rem_ed __P((ohci_soft_ed_t *, ohci_soft_ed_t *)); 142 static void ohci_hash_add_td __P((ohci_softc_t *, 143 ohci_soft_td_t *)); 144 static void ohci_hash_rem_td __P((ohci_softc_t *, 145 ohci_soft_td_t *)); 146 static ohci_soft_td_t *ohci_hash_find_td __P((ohci_softc_t *, 147 ohci_physaddr_t)); 148 149 static usbd_status ohci_setup_isoc __P((usbd_pipe_handle pipe)); 150 static void ohci_device_isoc_enter __P((usbd_xfer_handle)); 151 152 static usbd_status ohci_allocm __P((struct usbd_bus *, usb_dma_t *, 153 u_int32_t)); 154 static void ohci_freem __P((struct usbd_bus *, usb_dma_t *)); 155 156 static usbd_xfer_handle ohci_allocx __P((struct usbd_bus *)); 157 static void ohci_freex __P((struct usbd_bus *, usbd_xfer_handle)); 158 159 static usbd_status ohci_root_ctrl_transfer __P((usbd_xfer_handle)); 160 static usbd_status ohci_root_ctrl_start __P((usbd_xfer_handle)); 161 static void ohci_root_ctrl_abort __P((usbd_xfer_handle)); 162 static void ohci_root_ctrl_close __P((usbd_pipe_handle)); 163 static void ohci_root_ctrl_done __P((usbd_xfer_handle)); 164 165 static usbd_status ohci_root_intr_transfer __P((usbd_xfer_handle)); 166 static usbd_status ohci_root_intr_start __P((usbd_xfer_handle)); 167 static void ohci_root_intr_abort __P((usbd_xfer_handle)); 168 static void ohci_root_intr_close __P((usbd_pipe_handle)); 169 static void ohci_root_intr_done __P((usbd_xfer_handle)); 170 171 static usbd_status ohci_device_ctrl_transfer __P((usbd_xfer_handle)); 172 static usbd_status ohci_device_ctrl_start __P((usbd_xfer_handle)); 173 static void ohci_device_ctrl_abort __P((usbd_xfer_handle)); 174 static void ohci_device_ctrl_close __P((usbd_pipe_handle)); 175 static void ohci_device_ctrl_done __P((usbd_xfer_handle)); 176 177 static usbd_status ohci_device_bulk_transfer __P((usbd_xfer_handle)); 178 static usbd_status ohci_device_bulk_start __P((usbd_xfer_handle)); 179 static void ohci_device_bulk_abort __P((usbd_xfer_handle)); 180 static void ohci_device_bulk_close __P((usbd_pipe_handle)); 181 static void ohci_device_bulk_done __P((usbd_xfer_handle)); 182 183 static usbd_status ohci_device_intr_transfer __P((usbd_xfer_handle)); 184 static usbd_status ohci_device_intr_start __P((usbd_xfer_handle)); 185 static void ohci_device_intr_abort __P((usbd_xfer_handle)); 186 static void ohci_device_intr_close __P((usbd_pipe_handle)); 187 static void ohci_device_intr_done __P((usbd_xfer_handle)); 188 189 static usbd_status ohci_device_isoc_transfer __P((usbd_xfer_handle)); 190 static usbd_status ohci_device_isoc_start __P((usbd_xfer_handle)); 191 static void ohci_device_isoc_abort __P((usbd_xfer_handle)); 192 static void ohci_device_isoc_close __P((usbd_pipe_handle)); 193 static void ohci_device_isoc_done __P((usbd_xfer_handle)); 194 195 static usbd_status ohci_device_setintr __P((ohci_softc_t *sc, 196 struct ohci_pipe *pipe, int ival)); 197 198 static int ohci_str __P((usb_string_descriptor_t *, int, char *)); 199 200 static void ohci_timeout __P((void *)); 201 static void ohci_rhsc_able __P((ohci_softc_t *, int)); 202 203 static void ohci_close_pipe __P((usbd_pipe_handle pipe, 204 ohci_soft_ed_t *head)); 205 static void ohci_abort_xfer __P((usbd_xfer_handle xfer, 206 usbd_status status)); 207 static void ohci_abort_xfer_end __P((void *)); 208 209 static void ohci_device_clear_toggle __P((usbd_pipe_handle pipe)); 210 static void ohci_noop __P((usbd_pipe_handle pipe)); 211 212 #ifdef OHCI_DEBUG 213 static void ohci_dumpregs __P((ohci_softc_t *)); 214 static void ohci_dump_tds __P((ohci_soft_td_t *)); 215 static void ohci_dump_td __P((ohci_soft_td_t *)); 216 static void ohci_dump_ed __P((ohci_soft_ed_t *)); 217 #endif 218 219 #define OWRITE4(sc, r, x) bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x)) 220 #define OREAD4(sc, r) bus_space_read_4((sc)->iot, (sc)->ioh, (r)) 221 #define OREAD2(sc, r) bus_space_read_2((sc)->iot, (sc)->ioh, (r)) 222 223 /* Reverse the bits in a value 0 .. 31 */ 224 static u_int8_t revbits[OHCI_NO_INTRS] = 225 { 0x00, 0x10, 0x08, 0x18, 0x04, 0x14, 0x0c, 0x1c, 226 0x02, 0x12, 0x0a, 0x1a, 0x06, 0x16, 0x0e, 0x1e, 227 0x01, 0x11, 0x09, 0x19, 0x05, 0x15, 0x0d, 0x1d, 228 0x03, 0x13, 0x0b, 0x1b, 0x07, 0x17, 0x0f, 0x1f }; 229 230 struct ohci_pipe { 231 struct usbd_pipe pipe; 232 ohci_soft_ed_t *sed; 233 union { 234 ohci_soft_td_t *td; 235 ohci_soft_itd_t *itd; 236 } tail; 237 /* Info needed for different pipe kinds. */ 238 union { 239 /* Control pipe */ 240 struct { 241 usb_dma_t reqdma; 242 u_int length; 243 ohci_soft_td_t *setup, *data, *stat; 244 } ctl; 245 /* Interrupt pipe */ 246 struct { 247 int nslots; 248 int pos; 249 } intr; 250 /* Bulk pipe */ 251 struct { 252 u_int length; 253 int isread; 254 } bulk; 255 /* Iso pipe */ 256 struct iso { 257 int next, inuse; 258 } iso; 259 } u; 260 }; 261 262 #define OHCI_INTR_ENDPT 1 263 264 static struct usbd_bus_methods ohci_bus_methods = { 265 ohci_open, 266 ohci_poll, 267 ohci_allocm, 268 ohci_freem, 269 ohci_allocx, 270 ohci_freex, 271 }; 272 273 static struct usbd_pipe_methods ohci_root_ctrl_methods = { 274 ohci_root_ctrl_transfer, 275 ohci_root_ctrl_start, 276 ohci_root_ctrl_abort, 277 ohci_root_ctrl_close, 278 ohci_noop, 279 ohci_root_ctrl_done, 280 }; 281 282 static struct usbd_pipe_methods ohci_root_intr_methods = { 283 ohci_root_intr_transfer, 284 ohci_root_intr_start, 285 ohci_root_intr_abort, 286 ohci_root_intr_close, 287 ohci_noop, 288 ohci_root_intr_done, 289 }; 290 291 static struct usbd_pipe_methods ohci_device_ctrl_methods = { 292 ohci_device_ctrl_transfer, 293 ohci_device_ctrl_start, 294 ohci_device_ctrl_abort, 295 ohci_device_ctrl_close, 296 ohci_noop, 297 ohci_device_ctrl_done, 298 }; 299 300 static struct usbd_pipe_methods ohci_device_intr_methods = { 301 ohci_device_intr_transfer, 302 ohci_device_intr_start, 303 ohci_device_intr_abort, 304 ohci_device_intr_close, 305 ohci_device_clear_toggle, 306 ohci_device_intr_done, 307 }; 308 309 static struct usbd_pipe_methods ohci_device_bulk_methods = { 310 ohci_device_bulk_transfer, 311 ohci_device_bulk_start, 312 ohci_device_bulk_abort, 313 ohci_device_bulk_close, 314 ohci_device_clear_toggle, 315 ohci_device_bulk_done, 316 }; 317 318 static struct usbd_pipe_methods ohci_device_isoc_methods = { 319 ohci_device_isoc_transfer, 320 ohci_device_isoc_start, 321 ohci_device_isoc_abort, 322 ohci_device_isoc_close, 323 ohci_noop, 324 ohci_device_isoc_done, 325 }; 326 327 #if defined(__NetBSD__) || defined(__OpenBSD__) 328 int 329 ohci_activate(self, act) 330 device_ptr_t self; 331 enum devact act; 332 { 333 struct ohci_softc *sc = (struct ohci_softc *)self; 334 int rv = 0; 335 336 switch (act) { 337 case DVACT_ACTIVATE: 338 return (EOPNOTSUPP); 339 break; 340 341 case DVACT_DEACTIVATE: 342 if (sc->sc_child != NULL) 343 rv = config_deactivate(sc->sc_child); 344 break; 345 } 346 return (rv); 347 } 348 349 int 350 ohci_detach(sc, flags) 351 struct ohci_softc *sc; 352 int flags; 353 { 354 int rv = 0; 355 356 if (sc->sc_child != NULL) 357 rv = config_detach(sc->sc_child, flags); 358 359 if (rv != 0) 360 return (rv); 361 362 #if defined(__NetBSD__) || defined(__OpenBSD__) 363 powerhook_disestablish(sc->sc_powerhook); 364 shutdownhook_disestablish(sc->sc_shutdownhook); 365 #endif 366 367 /* free data structures XXX */ 368 369 return (rv); 370 } 371 #endif 372 373 ohci_soft_ed_t * 374 ohci_alloc_sed(sc) 375 ohci_softc_t *sc; 376 { 377 ohci_soft_ed_t *sed; 378 usbd_status err; 379 int i, offs; 380 usb_dma_t dma; 381 382 if (sc->sc_freeeds == NULL) { 383 DPRINTFN(2, ("ohci_alloc_sed: allocating chunk\n")); 384 err = usb_allocmem(&sc->sc_bus, OHCI_SED_SIZE * OHCI_SED_CHUNK, 385 OHCI_ED_ALIGN, &dma); 386 if (err) 387 return (0); 388 for(i = 0; i < OHCI_SED_CHUNK; i++) { 389 offs = i * OHCI_SED_SIZE; 390 sed = (ohci_soft_ed_t *)((char *)KERNADDR(&dma) +offs); 391 sed->physaddr = DMAADDR(&dma) + offs; 392 sed->next = sc->sc_freeeds; 393 sc->sc_freeeds = sed; 394 } 395 } 396 sed = sc->sc_freeeds; 397 sc->sc_freeeds = sed->next; 398 memset(&sed->ed, 0, sizeof(ohci_ed_t)); 399 sed->next = 0; 400 return (sed); 401 } 402 403 void 404 ohci_free_sed(sc, sed) 405 ohci_softc_t *sc; 406 ohci_soft_ed_t *sed; 407 { 408 sed->next = sc->sc_freeeds; 409 sc->sc_freeeds = sed; 410 } 411 412 ohci_soft_td_t * 413 ohci_alloc_std(sc) 414 ohci_softc_t *sc; 415 { 416 ohci_soft_td_t *std; 417 usbd_status err; 418 int i, offs; 419 usb_dma_t dma; 420 int s; 421 422 if (sc->sc_freetds == NULL) { 423 DPRINTFN(2, ("ohci_alloc_std: allocating chunk\n")); 424 err = usb_allocmem(&sc->sc_bus, OHCI_STD_SIZE * OHCI_STD_CHUNK, 425 OHCI_TD_ALIGN, &dma); 426 if (err) 427 return (0); 428 s = splusb(); 429 for(i = 0; i < OHCI_STD_CHUNK; i++) { 430 offs = i * OHCI_STD_SIZE; 431 std = (ohci_soft_td_t *)((char *)KERNADDR(&dma) +offs); 432 std->physaddr = DMAADDR(&dma) + offs; 433 std->nexttd = sc->sc_freetds; 434 sc->sc_freetds = std; 435 } 436 splx(s); 437 } 438 439 s = splusb(); 440 std = sc->sc_freetds; 441 sc->sc_freetds = std->nexttd; 442 memset(&std->td, 0, sizeof(ohci_td_t)); 443 std->nexttd = 0; 444 445 ohci_hash_add_td(sc, std); 446 splx(s); 447 448 return (std); 449 } 450 451 void 452 ohci_free_std(sc, std) 453 ohci_softc_t *sc; 454 ohci_soft_td_t *std; 455 { 456 int s; 457 458 s = splusb(); 459 ohci_hash_rem_td(sc, std); 460 461 std->nexttd = sc->sc_freetds; 462 sc->sc_freetds = std; 463 splx(s); 464 } 465 466 usbd_status 467 ohci_alloc_std_chain(opipe, sc, len, rd, flags, dma, sp, ep) 468 struct ohci_pipe *opipe; 469 ohci_softc_t *sc; 470 int len, rd; 471 u_int16_t flags; 472 usb_dma_t *dma; 473 ohci_soft_td_t *sp, **ep; 474 { 475 ohci_soft_td_t *next, *cur; 476 ohci_physaddr_t dataphys, dataphysend; 477 u_int32_t intr, tdflags; 478 int curlen; 479 480 DPRINTFN(len < 4096,("ohci_alloc_std_chain: start len=%d\n", len)); 481 cur = sp; 482 dataphys = DMAADDR(dma); 483 dataphysend = OHCI_PAGE(dataphys + len - 1); 484 tdflags = 485 (rd ? OHCI_TD_IN : OHCI_TD_OUT) | 486 OHCI_TD_NOCC | OHCI_TD_TOGGLE_CARRY | 487 (flags & USBD_SHORT_XFER_OK ? OHCI_TD_R : 0); 488 489 for (;;) { 490 next = ohci_alloc_std(sc); 491 if (next == 0) 492 goto nomem; 493 494 /* The OHCI hardware can handle at most one page crossing. */ 495 if (OHCI_PAGE(dataphys) == dataphysend || 496 OHCI_PAGE(dataphys) + OHCI_PAGE_SIZE == dataphysend) { 497 /* we can handle it in this TD */ 498 curlen = len; 499 } else { 500 /* must use multiple TDs, fill as much as possible. */ 501 curlen = 2 * OHCI_PAGE_SIZE - 502 (dataphys & (OHCI_PAGE_SIZE-1)); 503 } 504 DPRINTFN(4,("ohci_alloc_std_chain: dataphys=0x%08x " 505 "dataphysend=0x%08x len=%d curlen=%d\n", 506 dataphys, dataphysend, 507 len, curlen)); 508 len -= curlen; 509 510 intr = len == 0 ? OHCI_TD_SET_DI(1) : OHCI_TD_NOINTR; 511 cur->td.td_flags = LE(tdflags | intr); 512 cur->td.td_cbp = LE(dataphys); 513 cur->nexttd = next; 514 cur->td.td_nexttd = LE(next->physaddr); 515 cur->td.td_be = LE(dataphys + curlen - 1); 516 cur->len = curlen; 517 cur->flags = OHCI_ADD_LEN; 518 DPRINTFN(10,("ohci_alloc_std_chain: cbp=0x%08x be=0x%08x\n", 519 dataphys, dataphys + curlen - 1)); 520 if (len == 0) 521 break; 522 DPRINTFN(10,("ohci_alloc_std_chain: extend chain\n")); 523 dataphys += curlen; 524 cur = next; 525 } 526 if ((flags & USBD_FORCE_SHORT_XFER) && 527 len % UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize) == 0) { 528 /* Force a 0 length transfer at the end. */ 529 next = ohci_alloc_std(sc); 530 if (next == 0) 531 goto nomem; 532 533 cur->td.td_flags = LE(tdflags | OHCI_TD_SET_DI(1)); 534 cur->td.td_cbp = 0; /* indicate 0 length packet */ 535 cur->nexttd = next; 536 cur->td.td_nexttd = LE(next->physaddr); 537 cur->td.td_be = LE(dataphys - 1); 538 cur->len = 0; 539 cur->flags = 0; 540 cur = next; 541 DPRINTFN(2,("ohci_alloc_std_chain: add 0 xfer\n")); 542 } 543 cur->flags = OHCI_CALL_DONE | OHCI_ADD_LEN; 544 *ep = next; 545 546 return (USBD_NORMAL_COMPLETION); 547 548 nomem: 549 /* XXX free chain */ 550 return (USBD_NOMEM); 551 } 552 553 #if 0 554 static void 555 ohci_free_std_chain(sc, std, stdend) 556 ohci_softc_t *sc; 557 ohci_soft_td_t *std; 558 ohci_soft_td_t *stdend; 559 { 560 ohci_soft_td_t *p; 561 562 for (; std != stdend; std = p) { 563 p = std->nexttd; 564 ohci_free_std(sc, std); 565 } 566 } 567 #endif 568 569 ohci_soft_itd_t * 570 ohci_alloc_sitd(sc) 571 ohci_softc_t *sc; 572 { 573 ohci_soft_itd_t *sitd; 574 usbd_status err; 575 int i, offs; 576 usb_dma_t dma; 577 578 if (sc->sc_freeitds == NULL) { 579 DPRINTFN(2, ("ohci_alloc_sitd: allocating chunk\n")); 580 err = usb_allocmem(&sc->sc_bus, OHCI_STD_SIZE * OHCI_STD_CHUNK, 581 OHCI_TD_ALIGN, &dma); 582 if (err) 583 return (0); 584 for(i = 0; i < OHCI_STD_CHUNK; i++) { 585 offs = i * OHCI_STD_SIZE; 586 sitd = (ohci_soft_itd_t *)((char*)KERNADDR(&dma)+offs); 587 sitd->physaddr = DMAADDR(&dma) + offs; 588 sitd->nextitd = sc->sc_freeitds; 589 sc->sc_freeitds = sitd; 590 } 591 } 592 sitd = sc->sc_freeitds; 593 sc->sc_freeitds = sitd->nextitd; 594 memset(&sitd->itd, 0, sizeof(ohci_itd_t)); 595 sitd->nextitd = 0; 596 return (sitd); 597 } 598 599 void 600 ohci_free_sitd(sc, sitd) 601 ohci_softc_t *sc; 602 ohci_soft_itd_t *sitd; 603 { 604 sitd->nextitd = sc->sc_freeitds; 605 sc->sc_freeitds = sitd; 606 } 607 608 usbd_status 609 ohci_init(sc) 610 ohci_softc_t *sc; 611 { 612 ohci_soft_ed_t *sed, *psed; 613 usbd_status err; 614 int i; 615 u_int32_t s, ctl, ival, hcr, fm, per, rev, desca; 616 617 DPRINTF(("ohci_init: start\n")); 618 #if defined(__OpenBSD__) 619 printf(","); 620 #else 621 printf("%s:", USBDEVNAME(sc->sc_bus.bdev)); 622 #endif 623 rev = OREAD4(sc, OHCI_REVISION); 624 printf(" OHCI version %d.%d%s\n", OHCI_REV_HI(rev), OHCI_REV_LO(rev), 625 OHCI_REV_LEGACY(rev) ? ", legacy support" : ""); 626 627 if (OHCI_REV_HI(rev) != 1 || OHCI_REV_LO(rev) != 0) { 628 printf("%s: unsupported OHCI revision\n", 629 USBDEVNAME(sc->sc_bus.bdev)); 630 sc->sc_bus.usbrev = USBREV_UNKNOWN; 631 return (USBD_INVAL); 632 } 633 sc->sc_bus.usbrev = USBREV_1_0; 634 635 for (i = 0; i < OHCI_HASH_SIZE; i++) 636 LIST_INIT(&sc->sc_hash_tds[i]); 637 638 SIMPLEQ_INIT(&sc->sc_free_xfers); 639 640 /* Allocate the HCCA area. */ 641 err = usb_allocmem(&sc->sc_bus, OHCI_HCCA_SIZE, 642 OHCI_HCCA_ALIGN, &sc->sc_hccadma); 643 if (err) 644 return (err); 645 sc->sc_hcca = (struct ohci_hcca *)KERNADDR(&sc->sc_hccadma); 646 memset(sc->sc_hcca, 0, OHCI_HCCA_SIZE); 647 648 sc->sc_eintrs = OHCI_NORMAL_INTRS; 649 650 /* Allocate dummy ED that starts the control list. */ 651 sc->sc_ctrl_head = ohci_alloc_sed(sc); 652 if (sc->sc_ctrl_head == NULL) { 653 err = USBD_NOMEM; 654 goto bad1; 655 } 656 sc->sc_ctrl_head->ed.ed_flags |= LE(OHCI_ED_SKIP); 657 658 /* Allocate dummy ED that starts the bulk list. */ 659 sc->sc_bulk_head = ohci_alloc_sed(sc); 660 if (sc->sc_bulk_head == NULL) { 661 err = USBD_NOMEM; 662 goto bad2; 663 } 664 sc->sc_bulk_head->ed.ed_flags |= LE(OHCI_ED_SKIP); 665 666 /* Allocate dummy ED that starts the isochronous list. */ 667 sc->sc_isoc_head = ohci_alloc_sed(sc); 668 if (sc->sc_isoc_head == NULL) { 669 err = USBD_NOMEM; 670 goto bad3; 671 } 672 sc->sc_isoc_head->ed.ed_flags |= LE(OHCI_ED_SKIP); 673 674 /* Allocate all the dummy EDs that make up the interrupt tree. */ 675 for (i = 0; i < OHCI_NO_EDS; i++) { 676 sed = ohci_alloc_sed(sc); 677 if (sed == NULL) { 678 while (--i >= 0) 679 ohci_free_sed(sc, sc->sc_eds[i]); 680 err = USBD_NOMEM; 681 goto bad4; 682 } 683 /* All ED fields are set to 0. */ 684 sc->sc_eds[i] = sed; 685 sed->ed.ed_flags |= LE(OHCI_ED_SKIP); 686 if (i != 0) 687 psed = sc->sc_eds[(i-1) / 2]; 688 else 689 psed= sc->sc_isoc_head; 690 sed->next = psed; 691 sed->ed.ed_nexted = LE(psed->physaddr); 692 } 693 /* 694 * Fill HCCA interrupt table. The bit reversal is to get 695 * the tree set up properly to spread the interrupts. 696 */ 697 for (i = 0; i < OHCI_NO_INTRS; i++) 698 sc->sc_hcca->hcca_interrupt_table[revbits[i]] = 699 LE(sc->sc_eds[OHCI_NO_EDS-OHCI_NO_INTRS+i]->physaddr); 700 701 /* Determine in what context we are running. */ 702 ctl = OREAD4(sc, OHCI_CONTROL); 703 if (ctl & OHCI_IR) { 704 /* SMM active, request change */ 705 DPRINTF(("ohci_init: SMM active, request owner change\n")); 706 s = OREAD4(sc, OHCI_COMMAND_STATUS); 707 OWRITE4(sc, OHCI_COMMAND_STATUS, s | OHCI_OCR); 708 for (i = 0; i < 100 && (ctl & OHCI_IR); i++) { 709 usb_delay_ms(&sc->sc_bus, 1); 710 ctl = OREAD4(sc, OHCI_CONTROL); 711 } 712 if ((ctl & OHCI_IR) == 0) { 713 printf("%s: SMM does not respond, resetting\n", 714 USBDEVNAME(sc->sc_bus.bdev)); 715 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET); 716 goto reset; 717 } 718 } else if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_RESET) { 719 /* BIOS started controller. */ 720 DPRINTF(("ohci_init: BIOS active\n")); 721 if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_OPERATIONAL) { 722 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_OPERATIONAL); 723 usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY); 724 } 725 } else { 726 DPRINTF(("ohci_init: cold started\n")); 727 reset: 728 /* Controller was cold started. */ 729 usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY); 730 } 731 732 /* 733 * This reset should not be necessary according to the OHCI spec, but 734 * without it some controllers do not start. 735 */ 736 DPRINTF(("%s: resetting\n", USBDEVNAME(sc->sc_bus.bdev))); 737 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET); 738 usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY); 739 740 /* We now own the host controller and the bus has been reset. */ 741 ival = OHCI_GET_IVAL(OREAD4(sc, OHCI_FM_INTERVAL)); 742 743 OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_HCR); /* Reset HC */ 744 /* Nominal time for a reset is 10 us. */ 745 for (i = 0; i < 10; i++) { 746 delay(10); 747 hcr = OREAD4(sc, OHCI_COMMAND_STATUS) & OHCI_HCR; 748 if (!hcr) 749 break; 750 } 751 if (hcr) { 752 printf("%s: reset timeout\n", USBDEVNAME(sc->sc_bus.bdev)); 753 err = USBD_IOERROR; 754 goto bad5; 755 } 756 #ifdef OHCI_DEBUG 757 if (ohcidebug > 15) 758 ohci_dumpregs(sc); 759 #endif 760 761 /* The controller is now in SUSPEND state, we have 2ms to finish. */ 762 763 /* Set up HC registers. */ 764 OWRITE4(sc, OHCI_HCCA, DMAADDR(&sc->sc_hccadma)); 765 OWRITE4(sc, OHCI_CONTROL_HEAD_ED, sc->sc_ctrl_head->physaddr); 766 OWRITE4(sc, OHCI_BULK_HEAD_ED, sc->sc_bulk_head->physaddr); 767 /* disable all interrupts and then switch on all desired interrupts */ 768 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS); 769 OWRITE4(sc, OHCI_INTERRUPT_ENABLE, sc->sc_eintrs | OHCI_MIE); 770 /* switch on desired functional features */ 771 ctl = OREAD4(sc, OHCI_CONTROL); 772 ctl &= ~(OHCI_CBSR_MASK | OHCI_LES | OHCI_HCFS_MASK | OHCI_IR); 773 ctl |= OHCI_PLE | OHCI_IE | OHCI_CLE | OHCI_BLE | 774 OHCI_RATIO_1_4 | OHCI_HCFS_OPERATIONAL; 775 /* And finally start it! */ 776 OWRITE4(sc, OHCI_CONTROL, ctl); 777 778 /* 779 * The controller is now OPERATIONAL. Set a some final 780 * registers that should be set earlier, but that the 781 * controller ignores when in the SUSPEND state. 782 */ 783 fm = (OREAD4(sc, OHCI_FM_INTERVAL) & OHCI_FIT) ^ OHCI_FIT; 784 fm |= OHCI_FSMPS(ival) | ival; 785 OWRITE4(sc, OHCI_FM_INTERVAL, fm); 786 per = OHCI_PERIODIC(ival); /* 90% periodic */ 787 OWRITE4(sc, OHCI_PERIODIC_START, per); 788 789 /* Fiddle the No OverCurrent Protection bit to avoid chip bug. */ 790 desca = OREAD4(sc, OHCI_RH_DESCRIPTOR_A); 791 OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca | OHCI_NOCP); 792 OWRITE4(sc, OHCI_RH_STATUS, OHCI_LPSC); /* Enable port power */ 793 usb_delay_ms(&sc->sc_bus, 5); 794 OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca); 795 796 sc->sc_noport = OHCI_GET_NDP(OREAD4(sc, OHCI_RH_DESCRIPTOR_A)); 797 798 #ifdef OHCI_DEBUG 799 if (ohcidebug > 5) 800 ohci_dumpregs(sc); 801 #endif 802 803 /* Set up the bus struct. */ 804 sc->sc_bus.methods = &ohci_bus_methods; 805 sc->sc_bus.pipe_size = sizeof(struct ohci_pipe); 806 807 #if defined(__NetBSD__) || defined(__OpenBSD__) 808 sc->sc_powerhook = powerhook_establish(ohci_power, sc); 809 sc->sc_shutdownhook = shutdownhook_establish(ohci_shutdown, sc); 810 #endif 811 812 return (USBD_NORMAL_COMPLETION); 813 814 bad5: 815 for (i = 0; i < OHCI_NO_EDS; i++) 816 ohci_free_sed(sc, sc->sc_eds[i]); 817 bad4: 818 ohci_free_sed(sc, sc->sc_isoc_head); 819 bad3: 820 ohci_free_sed(sc, sc->sc_ctrl_head); 821 bad2: 822 ohci_free_sed(sc, sc->sc_bulk_head); 823 bad1: 824 usb_freemem(&sc->sc_bus, &sc->sc_hccadma); 825 return (err); 826 } 827 828 usbd_status 829 ohci_allocm(bus, dma, size) 830 struct usbd_bus *bus; 831 usb_dma_t *dma; 832 u_int32_t size; 833 { 834 #if defined(__NetBSD__) || defined(__OpenBSD__) 835 struct ohci_softc *sc = (struct ohci_softc *)bus; 836 #endif 837 838 return (usb_allocmem(&sc->sc_bus, size, 0, dma)); 839 } 840 841 void 842 ohci_freem(bus, dma) 843 struct usbd_bus *bus; 844 usb_dma_t *dma; 845 { 846 #if defined(__NetBSD__) || defined(__OpenBSD__) 847 struct ohci_softc *sc = (struct ohci_softc *)bus; 848 #endif 849 850 usb_freemem(&sc->sc_bus, dma); 851 } 852 853 usbd_xfer_handle 854 ohci_allocx(bus) 855 struct usbd_bus *bus; 856 { 857 struct ohci_softc *sc = (struct ohci_softc *)bus; 858 usbd_xfer_handle xfer; 859 860 xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers); 861 if (xfer != NULL) 862 SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, xfer, next); 863 else 864 xfer = malloc(sizeof(*xfer), M_USB, M_NOWAIT); 865 if (xfer != NULL) 866 memset(xfer, 0, sizeof *xfer); 867 return (xfer); 868 } 869 870 void 871 ohci_freex(bus, xfer) 872 struct usbd_bus *bus; 873 usbd_xfer_handle xfer; 874 { 875 struct ohci_softc *sc = (struct ohci_softc *)bus; 876 877 SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next); 878 } 879 880 /* 881 * Shut down the controller when the system is going down. 882 */ 883 void 884 ohci_shutdown(v) 885 void *v; 886 { 887 ohci_softc_t *sc = v; 888 889 DPRINTF(("ohci_shutdown: stopping the HC\n")); 890 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET); 891 } 892 893 /* 894 * Handle suspend/resume. 895 * 896 * We need to switch to polling mode here, because this routine is 897 * called from an intterupt context. This is all right since we 898 * are almost suspended anyway. 899 */ 900 void 901 ohci_power(why, v) 902 int why; 903 void *v; 904 { 905 #ifdef OHCI_DEBUG 906 ohci_softc_t *sc = v; 907 908 DPRINTF(("ohci_power: sc=%p, why=%d\n", sc, why)); 909 /* XXX should suspend/resume */ 910 ohci_dumpregs(sc); 911 #endif 912 } 913 914 #ifdef OHCI_DEBUG 915 void 916 ohci_dumpregs(sc) 917 ohci_softc_t *sc; 918 { 919 DPRINTF(("ohci_dumpregs: rev=0x%08x control=0x%08x command=0x%08x\n", 920 OREAD4(sc, OHCI_REVISION), 921 OREAD4(sc, OHCI_CONTROL), 922 OREAD4(sc, OHCI_COMMAND_STATUS))); 923 DPRINTF((" intrstat=0x%08x intre=0x%08x intrd=0x%08x\n", 924 OREAD4(sc, OHCI_INTERRUPT_STATUS), 925 OREAD4(sc, OHCI_INTERRUPT_ENABLE), 926 OREAD4(sc, OHCI_INTERRUPT_DISABLE))); 927 DPRINTF((" hcca=0x%08x percur=0x%08x ctrlhd=0x%08x\n", 928 OREAD4(sc, OHCI_HCCA), 929 OREAD4(sc, OHCI_PERIOD_CURRENT_ED), 930 OREAD4(sc, OHCI_CONTROL_HEAD_ED))); 931 DPRINTF((" ctrlcur=0x%08x bulkhd=0x%08x bulkcur=0x%08x\n", 932 OREAD4(sc, OHCI_CONTROL_CURRENT_ED), 933 OREAD4(sc, OHCI_BULK_HEAD_ED), 934 OREAD4(sc, OHCI_BULK_CURRENT_ED))); 935 DPRINTF((" done=0x%08x fmival=0x%08x fmrem=0x%08x\n", 936 OREAD4(sc, OHCI_DONE_HEAD), 937 OREAD4(sc, OHCI_FM_INTERVAL), 938 OREAD4(sc, OHCI_FM_REMAINING))); 939 DPRINTF((" fmnum=0x%08x perst=0x%08x lsthrs=0x%08x\n", 940 OREAD4(sc, OHCI_FM_NUMBER), 941 OREAD4(sc, OHCI_PERIODIC_START), 942 OREAD4(sc, OHCI_LS_THRESHOLD))); 943 DPRINTF((" desca=0x%08x descb=0x%08x stat=0x%08x\n", 944 OREAD4(sc, OHCI_RH_DESCRIPTOR_A), 945 OREAD4(sc, OHCI_RH_DESCRIPTOR_B), 946 OREAD4(sc, OHCI_RH_STATUS))); 947 DPRINTF((" port1=0x%08x port2=0x%08x\n", 948 OREAD4(sc, OHCI_RH_PORT_STATUS(1)), 949 OREAD4(sc, OHCI_RH_PORT_STATUS(2)))); 950 DPRINTF((" HCCA: frame_number=0x%04x done_head=0x%08x\n", 951 LE(sc->sc_hcca->hcca_frame_number), 952 LE(sc->sc_hcca->hcca_done_head))); 953 } 954 #endif 955 956 static int ohci_intr1 __P((ohci_softc_t *)); 957 958 int 959 ohci_intr(p) 960 void *p; 961 { 962 ohci_softc_t *sc = p; 963 964 /* If we get an interrupt while polling, then just ignore it. */ 965 if (sc->sc_bus.use_polling) { 966 #ifdef DIAGNOSTIC 967 printf("ohci_intr: ignored interrupt while polling\n"); 968 #endif 969 return (0); 970 } 971 972 return (ohci_intr1(sc)); 973 } 974 975 static int 976 ohci_intr1(sc) 977 ohci_softc_t *sc; 978 { 979 u_int32_t intrs, eintrs; 980 ohci_physaddr_t done; 981 982 /* In case the interrupt occurs before initialization has completed. */ 983 if (sc == NULL || sc->sc_hcca == NULL) { 984 #ifdef DIAGNOSTIC 985 printf("ohci_intr: sc->sc_hcca == NULL\n"); 986 #endif 987 return (0); 988 } 989 990 intrs = 0; 991 done = LE(sc->sc_hcca->hcca_done_head); 992 if (done != 0) { 993 sc->sc_hcca->hcca_done_head = 0; 994 if (done & ~OHCI_DONE_INTRS) 995 intrs = OHCI_WDH; 996 if (done & OHCI_DONE_INTRS) 997 intrs |= OREAD4(sc, OHCI_INTERRUPT_STATUS); 998 } else 999 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS); 1000 1001 if (!intrs) 1002 return (0); 1003 1004 intrs &= ~OHCI_MIE; 1005 OWRITE4(sc, OHCI_INTERRUPT_STATUS, intrs); /* Acknowledge */ 1006 eintrs = intrs & sc->sc_eintrs; 1007 if (!eintrs) 1008 return (0); 1009 1010 sc->sc_bus.intr_context++; 1011 sc->sc_bus.no_intrs++; 1012 DPRINTFN(7, ("ohci_intr: sc=%p intrs=%x(%x) eintr=%x\n", 1013 sc, (u_int)intrs, OREAD4(sc, OHCI_INTERRUPT_STATUS), 1014 (u_int)eintrs)); 1015 1016 if (eintrs & OHCI_SO) { 1017 printf("%s: scheduling overrun\n",USBDEVNAME(sc->sc_bus.bdev)); 1018 /* XXX do what */ 1019 intrs &= ~OHCI_SO; 1020 } 1021 if (eintrs & OHCI_WDH) { 1022 ohci_process_done(sc, done &~ OHCI_DONE_INTRS); 1023 intrs &= ~OHCI_WDH; 1024 } 1025 if (eintrs & OHCI_RD) { 1026 printf("%s: resume detect\n", USBDEVNAME(sc->sc_bus.bdev)); 1027 /* XXX process resume detect */ 1028 } 1029 if (eintrs & OHCI_UE) { 1030 printf("%s: unrecoverable error, controller halted\n", 1031 USBDEVNAME(sc->sc_bus.bdev)); 1032 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET); 1033 /* XXX what else */ 1034 } 1035 if (eintrs & OHCI_RHSC) { 1036 ohci_rhsc(sc, sc->sc_intrxfer); 1037 intrs &= ~OHCI_RHSC; 1038 1039 /* 1040 * Disable RHSC interrupt for now, because it will be 1041 * on until the port has been reset. 1042 */ 1043 ohci_rhsc_able(sc, 0); 1044 } 1045 1046 sc->sc_bus.intr_context--; 1047 1048 /* Block unprocessed interrupts. XXX */ 1049 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, intrs); 1050 sc->sc_eintrs &= ~intrs; 1051 1052 return (1); 1053 } 1054 1055 void 1056 ohci_rhsc_able(sc, on) 1057 ohci_softc_t *sc; 1058 int on; 1059 { 1060 DPRINTFN(4, ("ohci_rhsc_able: on=%d\n", on)); 1061 if (on) { 1062 sc->sc_eintrs |= OHCI_RHSC; 1063 OWRITE4(sc, OHCI_INTERRUPT_ENABLE, OHCI_RHSC); 1064 } else { 1065 sc->sc_eintrs &= ~OHCI_RHSC; 1066 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_RHSC); 1067 } 1068 } 1069 1070 #ifdef OHCI_DEBUG 1071 char *ohci_cc_strs[] = { 1072 "NO_ERROR", 1073 "CRC", 1074 "BIT_STUFFING", 1075 "DATA_TOGGLE_MISMATCH", 1076 "STALL", 1077 "DEVICE_NOT_RESPONDING", 1078 "PID_CHECK_FAILURE", 1079 "UNEXPECTED_PID", 1080 "DATA_OVERRUN", 1081 "DATA_UNDERRUN", 1082 "BUFFER_OVERRUN", 1083 "BUFFER_UNDERRUN", 1084 "reserved", 1085 "reserved", 1086 "NOT_ACCESSED", 1087 "NOT_ACCESSED", 1088 }; 1089 #endif 1090 1091 void 1092 ohci_process_done(sc, done) 1093 ohci_softc_t *sc; 1094 ohci_physaddr_t done; 1095 { 1096 ohci_soft_td_t *std, *sdone, *stdnext; 1097 usbd_xfer_handle xfer; 1098 int len, cc; 1099 1100 DPRINTFN(10,("ohci_process_done: done=0x%08lx\n", (u_long)done)); 1101 1102 /* Reverse the done list. */ 1103 for (sdone = NULL; done != 0; done = LE(std->td.td_nexttd)) { 1104 std = ohci_hash_find_td(sc, done); 1105 std->dnext = sdone; 1106 sdone = std; 1107 } 1108 1109 #ifdef OHCI_DEBUG 1110 if (ohcidebug > 10) { 1111 DPRINTF(("ohci_process_done: TD done:\n")); 1112 ohci_dump_tds(sdone); 1113 } 1114 #endif 1115 1116 for (std = sdone; std; std = stdnext) { 1117 xfer = std->xfer; 1118 stdnext = std->dnext; 1119 DPRINTFN(10, ("ohci_process_done: std=%p xfer=%p hcpriv=%p\n", 1120 std, xfer, xfer ? xfer->hcpriv : 0)); 1121 if (xfer == NULL) { 1122 /* xfer == NULL: There seems to be no xfer associated 1123 * with this TD. It is tailp that happened to end up on 1124 * the done queue. 1125 */ 1126 continue; 1127 } 1128 cc = OHCI_TD_GET_CC(LE(std->td.td_flags)); 1129 usb_untimeout(ohci_timeout, xfer, xfer->timo_handle); 1130 if (xfer->status == USBD_CANCELLED || 1131 xfer->status == USBD_TIMEOUT) { 1132 DPRINTF(("ohci_process_done: cancel/timeout %p\n", 1133 xfer)); 1134 /* Handled by abort routine. */ 1135 } else if (cc == OHCI_CC_NO_ERROR) { 1136 len = std->len; 1137 if (std->td.td_cbp != 0) 1138 len -= LE(std->td.td_be) - 1139 LE(std->td.td_cbp) + 1; 1140 if (std->flags & OHCI_ADD_LEN) 1141 xfer->actlen += len; 1142 if (std->flags & OHCI_CALL_DONE) { 1143 xfer->status = USBD_NORMAL_COMPLETION; 1144 usb_transfer_complete(xfer); 1145 } 1146 ohci_free_std(sc, std); 1147 } else { 1148 /* 1149 * Endpoint is halted. First unlink all the TDs 1150 * belonging to the failed transfer, and then restart 1151 * the endpoint. 1152 */ 1153 ohci_soft_td_t *p, *n; 1154 struct ohci_pipe *opipe = 1155 (struct ohci_pipe *)xfer->pipe; 1156 1157 DPRINTFN(15,("ohci_process_done: error cc=%d (%s)\n", 1158 OHCI_TD_GET_CC(LE(std->td.td_flags)), 1159 ohci_cc_strs[OHCI_TD_GET_CC(LE(std->td.td_flags))])); 1160 1161 /* remove TDs */ 1162 for (p = std; p->xfer == xfer; p = n) { 1163 n = p->nexttd; 1164 ohci_free_std(sc, p); 1165 } 1166 1167 /* clear halt */ 1168 opipe->sed->ed.ed_headp = LE(p->physaddr); 1169 OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF); 1170 1171 if (cc == OHCI_CC_STALL) 1172 xfer->status = USBD_STALLED; 1173 else 1174 xfer->status = USBD_IOERROR; 1175 usb_transfer_complete(xfer); 1176 } 1177 } 1178 } 1179 1180 void 1181 ohci_device_ctrl_done(xfer) 1182 usbd_xfer_handle xfer; 1183 { 1184 DPRINTFN(10,("ohci_ctrl_done: xfer=%p\n", xfer)); 1185 1186 #ifdef DIAGNOSTIC 1187 if (!(xfer->rqflags & URQ_REQUEST)) { 1188 panic("ohci_ctrl_done: not a request\n"); 1189 } 1190 #endif 1191 xfer->hcpriv = NULL; 1192 } 1193 1194 void 1195 ohci_device_intr_done(xfer) 1196 usbd_xfer_handle xfer; 1197 { 1198 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 1199 ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus; 1200 ohci_soft_ed_t *sed = opipe->sed; 1201 ohci_soft_td_t *data, *tail; 1202 1203 1204 DPRINTFN(10,("ohci_intr_done: xfer=%p, actlen=%d\n", 1205 xfer, xfer->actlen)); 1206 1207 xfer->hcpriv = NULL; 1208 1209 if (xfer->pipe->repeat) { 1210 data = opipe->tail.td; 1211 tail = ohci_alloc_std(sc); /* XXX should reuse TD */ 1212 if (tail == NULL) { 1213 xfer->status = USBD_NOMEM; 1214 return; 1215 } 1216 tail->xfer = NULL; 1217 1218 data->td.td_flags = LE( 1219 OHCI_TD_IN | OHCI_TD_NOCC | 1220 OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY); 1221 if (xfer->flags & USBD_SHORT_XFER_OK) 1222 data->td.td_flags |= LE(OHCI_TD_R); 1223 data->td.td_cbp = LE(DMAADDR(&xfer->dmabuf)); 1224 data->nexttd = tail; 1225 data->td.td_nexttd = LE(tail->physaddr); 1226 data->td.td_be = LE(LE(data->td.td_cbp) + xfer->length - 1); 1227 data->len = xfer->length; 1228 data->xfer = xfer; 1229 data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN; 1230 xfer->hcpriv = data; 1231 xfer->actlen = 0; 1232 1233 sed->ed.ed_tailp = LE(tail->physaddr); 1234 opipe->tail.td = tail; 1235 } 1236 } 1237 1238 void 1239 ohci_device_bulk_done(xfer) 1240 usbd_xfer_handle xfer; 1241 { 1242 DPRINTFN(10,("ohci_bulk_done: xfer=%p, actlen=%d\n", 1243 xfer, xfer->actlen)); 1244 1245 xfer->hcpriv = NULL; 1246 } 1247 1248 void 1249 ohci_rhsc(sc, xfer) 1250 ohci_softc_t *sc; 1251 usbd_xfer_handle xfer; 1252 { 1253 usbd_pipe_handle pipe; 1254 struct ohci_pipe *opipe; 1255 u_char *p; 1256 int i, m; 1257 int hstatus; 1258 1259 hstatus = OREAD4(sc, OHCI_RH_STATUS); 1260 DPRINTF(("ohci_rhsc: sc=%p xfer=%p hstatus=0x%08x\n", 1261 sc, xfer, hstatus)); 1262 1263 if (xfer == NULL) { 1264 /* Just ignore the change. */ 1265 return; 1266 } 1267 1268 pipe = xfer->pipe; 1269 opipe = (struct ohci_pipe *)pipe; 1270 1271 p = KERNADDR(&xfer->dmabuf); 1272 m = min(sc->sc_noport, xfer->length * 8 - 1); 1273 memset(p, 0, xfer->length); 1274 for (i = 1; i <= m; i++) { 1275 if (OREAD4(sc, OHCI_RH_PORT_STATUS(i)) >> 16) 1276 p[i/8] |= 1 << (i%8); 1277 } 1278 DPRINTF(("ohci_rhsc: change=0x%02x\n", *p)); 1279 xfer->actlen = xfer->length; 1280 xfer->status = USBD_NORMAL_COMPLETION; 1281 1282 usb_transfer_complete(xfer); 1283 } 1284 1285 void 1286 ohci_root_intr_done(xfer) 1287 usbd_xfer_handle xfer; 1288 { 1289 xfer->hcpriv = NULL; 1290 } 1291 1292 void 1293 ohci_root_ctrl_done(xfer) 1294 usbd_xfer_handle xfer; 1295 { 1296 xfer->hcpriv = NULL; 1297 } 1298 1299 /* 1300 * Wait here until controller claims to have an interrupt. 1301 * Then call ohci_intr and return. Use timeout to avoid waiting 1302 * too long. 1303 */ 1304 void 1305 ohci_waitintr(sc, xfer) 1306 ohci_softc_t *sc; 1307 usbd_xfer_handle xfer; 1308 { 1309 int timo = xfer->timeout; 1310 int usecs; 1311 u_int32_t intrs; 1312 1313 xfer->status = USBD_IN_PROGRESS; 1314 for (usecs = timo * 1000000 / hz; usecs > 0; usecs -= 1000) { 1315 usb_delay_ms(&sc->sc_bus, 1); 1316 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs; 1317 DPRINTFN(15,("ohci_waitintr: 0x%04x\n", intrs)); 1318 #ifdef OHCI_DEBUG 1319 if (ohcidebug > 15) 1320 ohci_dumpregs(sc); 1321 #endif 1322 if (intrs) { 1323 ohci_intr1(sc); 1324 if (xfer->status != USBD_IN_PROGRESS) 1325 return; 1326 } 1327 } 1328 1329 /* Timeout */ 1330 DPRINTF(("ohci_waitintr: timeout\n")); 1331 xfer->status = USBD_TIMEOUT; 1332 usb_transfer_complete(xfer); 1333 /* XXX should free TD */ 1334 } 1335 1336 void 1337 ohci_poll(bus) 1338 struct usbd_bus *bus; 1339 { 1340 ohci_softc_t *sc = (ohci_softc_t *)bus; 1341 1342 if (OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs) 1343 ohci_intr1(sc); 1344 } 1345 1346 usbd_status 1347 ohci_device_request(xfer) 1348 usbd_xfer_handle xfer; 1349 { 1350 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 1351 usb_device_request_t *req = &xfer->request; 1352 usbd_device_handle dev = opipe->pipe.device; 1353 ohci_softc_t *sc = (ohci_softc_t *)dev->bus; 1354 int addr = dev->address; 1355 ohci_soft_td_t *setup, *data = 0, *stat, *next, *tail; 1356 ohci_soft_ed_t *sed; 1357 int isread; 1358 int len; 1359 usbd_status err; 1360 int s; 1361 1362 isread = req->bmRequestType & UT_READ; 1363 len = UGETW(req->wLength); 1364 1365 DPRINTFN(3,("ohci_device_control type=0x%02x, request=0x%02x, " 1366 "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n", 1367 req->bmRequestType, req->bRequest, UGETW(req->wValue), 1368 UGETW(req->wIndex), len, addr, 1369 opipe->pipe.endpoint->edesc->bEndpointAddress)); 1370 1371 setup = opipe->tail.td; 1372 stat = ohci_alloc_std(sc); 1373 if (stat == NULL) { 1374 err = USBD_NOMEM; 1375 goto bad1; 1376 } 1377 tail = ohci_alloc_std(sc); 1378 if (tail == NULL) { 1379 err = USBD_NOMEM; 1380 goto bad2; 1381 } 1382 tail->xfer = NULL; 1383 1384 sed = opipe->sed; 1385 opipe->u.ctl.length = len; 1386 1387 /* Update device address and length since they may have changed. */ 1388 /* XXX This only needs to be done once, but it's too early in open. */ 1389 sed->ed.ed_flags = LE( 1390 (LE(sed->ed.ed_flags) & ~(OHCI_ED_ADDRMASK | OHCI_ED_MAXPMASK)) | 1391 OHCI_ED_SET_FA(addr) | 1392 OHCI_ED_SET_MAXP(UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize))); 1393 1394 /* Set up data transaction */ 1395 if (len != 0) { 1396 data = ohci_alloc_std(sc); 1397 if (data == NULL) { 1398 err = USBD_NOMEM; 1399 goto bad3; 1400 } 1401 data->td.td_flags = LE( 1402 (isread ? OHCI_TD_IN : OHCI_TD_OUT) | OHCI_TD_NOCC | 1403 OHCI_TD_TOGGLE_1 | OHCI_TD_NOINTR | 1404 (xfer->flags & USBD_SHORT_XFER_OK ? OHCI_TD_R : 0)); 1405 data->td.td_cbp = LE(DMAADDR(&xfer->dmabuf)); 1406 data->nexttd = stat; 1407 data->td.td_nexttd = LE(stat->physaddr); 1408 data->td.td_be = LE(LE(data->td.td_cbp) + len - 1); 1409 data->len = len; 1410 data->xfer = xfer; 1411 data->flags = OHCI_ADD_LEN; 1412 1413 next = data; 1414 stat->flags = OHCI_CALL_DONE; 1415 } else { 1416 next = stat; 1417 /* XXX ADD_LEN? */ 1418 stat->flags = OHCI_CALL_DONE | OHCI_ADD_LEN; 1419 } 1420 1421 memcpy(KERNADDR(&opipe->u.ctl.reqdma), req, sizeof *req); 1422 1423 setup->td.td_flags = LE(OHCI_TD_SETUP | OHCI_TD_NOCC | 1424 OHCI_TD_TOGGLE_0 | OHCI_TD_NOINTR); 1425 setup->td.td_cbp = LE(DMAADDR(&opipe->u.ctl.reqdma)); 1426 setup->nexttd = next; 1427 setup->td.td_nexttd = LE(next->physaddr); 1428 setup->td.td_be = LE(LE(setup->td.td_cbp) + sizeof *req - 1); 1429 setup->len = 0; /* XXX The number of byte we count */ 1430 setup->xfer = xfer; 1431 setup->flags = 0; 1432 xfer->hcpriv = setup; 1433 1434 stat->td.td_flags = LE( 1435 (isread ? OHCI_TD_OUT : OHCI_TD_IN) | OHCI_TD_NOCC | 1436 OHCI_TD_TOGGLE_1 | OHCI_TD_SET_DI(1)); 1437 stat->td.td_cbp = 0; 1438 stat->nexttd = tail; 1439 stat->td.td_nexttd = LE(tail->physaddr); 1440 stat->td.td_be = 0; 1441 stat->len = 0; 1442 stat->xfer = xfer; 1443 1444 #ifdef OHCI_DEBUG 1445 if (ohcidebug > 5) { 1446 DPRINTF(("ohci_device_request:\n")); 1447 ohci_dump_ed(sed); 1448 ohci_dump_tds(setup); 1449 } 1450 #endif 1451 1452 /* Insert ED in schedule */ 1453 s = splusb(); 1454 sed->ed.ed_tailp = LE(tail->physaddr); 1455 opipe->tail.td = tail; 1456 OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF); 1457 if (xfer->timeout && !sc->sc_bus.use_polling) { 1458 usb_timeout(ohci_timeout, xfer, 1459 MS_TO_TICKS(xfer->timeout), xfer->timo_handle); 1460 } 1461 splx(s); 1462 1463 #ifdef OHCI_DEBUG 1464 if (ohcidebug > 5) { 1465 usb_delay_ms(&sc->sc_bus, 5); 1466 DPRINTF(("ohci_device_request: status=%x\n", 1467 OREAD4(sc, OHCI_COMMAND_STATUS))); 1468 ohci_dump_ed(sed); 1469 ohci_dump_tds(setup); 1470 } 1471 #endif 1472 1473 return (USBD_NORMAL_COMPLETION); 1474 1475 bad3: 1476 ohci_free_std(sc, tail); 1477 bad2: 1478 ohci_free_std(sc, stat); 1479 bad1: 1480 return (err); 1481 } 1482 1483 /* 1484 * Add an ED to the schedule. Called at splusb(). 1485 */ 1486 void 1487 ohci_add_ed(sed, head) 1488 ohci_soft_ed_t *sed; 1489 ohci_soft_ed_t *head; 1490 { 1491 SPLUSBCHECK; 1492 sed->next = head->next; 1493 sed->ed.ed_nexted = head->ed.ed_nexted; 1494 head->next = sed; 1495 head->ed.ed_nexted = LE(sed->physaddr); 1496 } 1497 1498 /* 1499 * Remove an ED from the schedule. Called at splusb(). 1500 */ 1501 void 1502 ohci_rem_ed(sed, head) 1503 ohci_soft_ed_t *sed; 1504 ohci_soft_ed_t *head; 1505 { 1506 ohci_soft_ed_t *p; 1507 1508 SPLUSBCHECK; 1509 1510 /* XXX */ 1511 for (p = head; p == NULL && p->next != sed; p = p->next) 1512 ; 1513 if (p == NULL) 1514 panic("ohci_rem_ed: ED not found\n"); 1515 p->next = sed->next; 1516 p->ed.ed_nexted = sed->ed.ed_nexted; 1517 } 1518 1519 /* 1520 * When a transfer is completed the TD is added to the done queue by 1521 * the host controller. This queue is the processed by software. 1522 * Unfortunately the queue contains the physical address of the TD 1523 * and we have no simple way to translate this back to a kernel address. 1524 * To make the translation possible (and fast) we use a hash table of 1525 * TDs currently in the schedule. The physical address is used as the 1526 * hash value. 1527 */ 1528 1529 #define HASH(a) (((a) >> 4) % OHCI_HASH_SIZE) 1530 /* Called at splusb() */ 1531 void 1532 ohci_hash_add_td(sc, std) 1533 ohci_softc_t *sc; 1534 ohci_soft_td_t *std; 1535 { 1536 int h = HASH(std->physaddr); 1537 1538 SPLUSBCHECK; 1539 1540 LIST_INSERT_HEAD(&sc->sc_hash_tds[h], std, hnext); 1541 } 1542 1543 /* Called at splusb() */ 1544 void 1545 ohci_hash_rem_td(sc, std) 1546 ohci_softc_t *sc; 1547 ohci_soft_td_t *std; 1548 { 1549 SPLUSBCHECK; 1550 1551 LIST_REMOVE(std, hnext); 1552 } 1553 1554 ohci_soft_td_t * 1555 ohci_hash_find_td(sc, a) 1556 ohci_softc_t *sc; 1557 ohci_physaddr_t a; 1558 { 1559 int h = HASH(a); 1560 ohci_soft_td_t *std; 1561 1562 for (std = LIST_FIRST(&sc->sc_hash_tds[h]); 1563 std != NULL; 1564 std = LIST_NEXT(std, hnext)) 1565 if (std->physaddr == a) 1566 return (std); 1567 panic("ohci_hash_find_td: addr 0x%08lx not found\n", (u_long)a); 1568 } 1569 1570 void 1571 ohci_timeout(addr) 1572 void *addr; 1573 { 1574 usbd_xfer_handle xfer = addr; 1575 int s; 1576 1577 DPRINTF(("ohci_timeout: xfer=%p\n", xfer)); 1578 1579 s = splusb(); 1580 xfer->device->bus->intr_context++; 1581 ohci_abort_xfer(xfer, USBD_TIMEOUT); 1582 xfer->device->bus->intr_context--; 1583 splx(s); 1584 } 1585 1586 #ifdef OHCI_DEBUG 1587 void 1588 ohci_dump_tds(std) 1589 ohci_soft_td_t *std; 1590 { 1591 for (; std; std = std->nexttd) 1592 ohci_dump_td(std); 1593 } 1594 1595 void 1596 ohci_dump_td(std) 1597 ohci_soft_td_t *std; 1598 { 1599 DPRINTF(("TD(%p) at %08lx: %b delay=%d ec=%d cc=%d\ncbp=0x%08lx " 1600 "nexttd=0x%08lx be=0x%08lx\n", 1601 std, (u_long)std->physaddr, 1602 (int)LE(std->td.td_flags), 1603 "\20\23R\24OUT\25IN\31TOG1\32SETTOGGLE", 1604 OHCI_TD_GET_DI(LE(std->td.td_flags)), 1605 OHCI_TD_GET_EC(LE(std->td.td_flags)), 1606 OHCI_TD_GET_CC(LE(std->td.td_flags)), 1607 (u_long)LE(std->td.td_cbp), 1608 (u_long)LE(std->td.td_nexttd), (u_long)LE(std->td.td_be))); 1609 } 1610 1611 void 1612 ohci_dump_ed(sed) 1613 ohci_soft_ed_t *sed; 1614 { 1615 DPRINTF(("ED(%p) at %08lx: addr=%d endpt=%d maxp=%d %b\ntailp=0x%08lx " 1616 "headp=%b nexted=0x%08lx\n", 1617 sed, (u_long)sed->physaddr, 1618 OHCI_ED_GET_FA(LE(sed->ed.ed_flags)), 1619 OHCI_ED_GET_EN(LE(sed->ed.ed_flags)), 1620 OHCI_ED_GET_MAXP(LE(sed->ed.ed_flags)), 1621 (int)LE(sed->ed.ed_flags), 1622 "\20\14OUT\15IN\16LOWSPEED\17SKIP\20ISO", 1623 (u_long)LE(sed->ed.ed_tailp), 1624 (u_long)LE(sed->ed.ed_headp), 1625 "\20\1HALT\2CARRY", 1626 (u_long)LE(sed->ed.ed_nexted))); 1627 } 1628 #endif 1629 1630 usbd_status 1631 ohci_open(pipe) 1632 usbd_pipe_handle pipe; 1633 { 1634 usbd_device_handle dev = pipe->device; 1635 ohci_softc_t *sc = (ohci_softc_t *)dev->bus; 1636 usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc; 1637 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 1638 u_int8_t addr = dev->address; 1639 u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE; 1640 ohci_soft_ed_t *sed; 1641 ohci_soft_td_t *std; 1642 ohci_soft_itd_t *sitd; 1643 ohci_physaddr_t tdphys; 1644 u_int32_t fmt; 1645 usbd_status err; 1646 int s; 1647 int ival; 1648 1649 DPRINTFN(1, ("ohci_open: pipe=%p, addr=%d, endpt=%d (%d)\n", 1650 pipe, addr, ed->bEndpointAddress, sc->sc_addr)); 1651 if (addr == sc->sc_addr) { 1652 switch (ed->bEndpointAddress) { 1653 case USB_CONTROL_ENDPOINT: 1654 pipe->methods = &ohci_root_ctrl_methods; 1655 break; 1656 case UE_DIR_IN | OHCI_INTR_ENDPT: 1657 pipe->methods = &ohci_root_intr_methods; 1658 break; 1659 default: 1660 return (USBD_INVAL); 1661 } 1662 } else { 1663 sed = ohci_alloc_sed(sc); 1664 if (sed == NULL) 1665 goto bad0; 1666 opipe->sed = sed; 1667 if (xfertype == UE_ISOCHRONOUS) { 1668 sitd = ohci_alloc_sitd(sc); 1669 if (sitd == NULL) { 1670 ohci_free_sitd(sc, sitd); 1671 goto bad1; 1672 } 1673 opipe->tail.itd = sitd; 1674 tdphys = LE(sitd->physaddr); 1675 fmt = OHCI_ED_FORMAT_ISO; 1676 } else { 1677 std = ohci_alloc_std(sc); 1678 if (std == NULL) { 1679 ohci_free_std(sc, std); 1680 goto bad1; 1681 } 1682 opipe->tail.td = std; 1683 tdphys = LE(std->physaddr); 1684 fmt = OHCI_ED_FORMAT_GEN; 1685 } 1686 sed->ed.ed_flags = LE( 1687 OHCI_ED_SET_FA(addr) | 1688 OHCI_ED_SET_EN(ed->bEndpointAddress) | 1689 OHCI_ED_DIR_TD | 1690 (dev->lowspeed ? OHCI_ED_SPEED : 0) | fmt | 1691 OHCI_ED_SET_MAXP(UGETW(ed->wMaxPacketSize))); 1692 sed->ed.ed_headp = sed->ed.ed_tailp = tdphys; 1693 1694 switch (xfertype) { 1695 case UE_CONTROL: 1696 pipe->methods = &ohci_device_ctrl_methods; 1697 err = usb_allocmem(&sc->sc_bus, 1698 sizeof(usb_device_request_t), 1699 0, &opipe->u.ctl.reqdma); 1700 if (err) 1701 goto bad; 1702 s = splusb(); 1703 ohci_add_ed(sed, sc->sc_ctrl_head); 1704 splx(s); 1705 break; 1706 case UE_INTERRUPT: 1707 pipe->methods = &ohci_device_intr_methods; 1708 ival = pipe->interval; 1709 if (ival == USBD_DEFAULT_INTERVAL) 1710 ival = ed->bInterval; 1711 return (ohci_device_setintr(sc, opipe, ival)); 1712 case UE_ISOCHRONOUS: 1713 pipe->methods = &ohci_device_isoc_methods; 1714 return (ohci_setup_isoc(pipe)); 1715 case UE_BULK: 1716 pipe->methods = &ohci_device_bulk_methods; 1717 s = splusb(); 1718 ohci_add_ed(sed, sc->sc_bulk_head); 1719 splx(s); 1720 break; 1721 } 1722 } 1723 return (USBD_NORMAL_COMPLETION); 1724 1725 bad: 1726 ohci_free_std(sc, std); 1727 bad1: 1728 ohci_free_sed(sc, sed); 1729 bad0: 1730 return (USBD_NOMEM); 1731 1732 } 1733 1734 /* 1735 * Close a reqular pipe. 1736 * Assumes that there are no pending transactions. 1737 */ 1738 void 1739 ohci_close_pipe(pipe, head) 1740 usbd_pipe_handle pipe; 1741 ohci_soft_ed_t *head; 1742 { 1743 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 1744 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 1745 ohci_soft_ed_t *sed = opipe->sed; 1746 int s; 1747 1748 s = splusb(); 1749 #ifdef DIAGNOSTIC 1750 sed->ed.ed_flags |= LE(OHCI_ED_SKIP); 1751 if ((sed->ed.ed_tailp & LE(OHCI_HEADMASK)) != 1752 (sed->ed.ed_headp & LE(OHCI_HEADMASK))) { 1753 ohci_physaddr_t td = sed->ed.ed_headp; 1754 ohci_soft_td_t *std; 1755 for (std = LIST_FIRST(&sc->sc_hash_tds[HASH(td)]); 1756 std != NULL; 1757 std = LIST_NEXT(std, hnext)) 1758 if (std->physaddr == td) 1759 break; 1760 printf("ohci_close_pipe: pipe not empty sed=%p hd=0x%x " 1761 "tl=0x%x pipe=%p, std=%p\n", sed, 1762 (int)LE(sed->ed.ed_headp), (int)LE(sed->ed.ed_tailp), 1763 pipe, std); 1764 usb_delay_ms(&sc->sc_bus, 2); 1765 if ((sed->ed.ed_tailp & LE(OHCI_HEADMASK)) != 1766 (sed->ed.ed_headp & LE(OHCI_HEADMASK))) 1767 printf("ohci_close_pipe: pipe still not empty\n"); 1768 } 1769 #endif 1770 ohci_rem_ed(sed, head); 1771 splx(s); 1772 ohci_free_sed(sc, opipe->sed); 1773 } 1774 1775 /* 1776 * Abort a device request. 1777 * If this routine is called at splusb() it guarantees that the request 1778 * will be removed from the hardware scheduling and that the callback 1779 * for it will be called with USBD_CANCELLED status. 1780 * It's impossible to guarantee that the requested transfer will not 1781 * have happened since the hardware runs concurrently. 1782 * If the transaction has already happened we rely on the ordinary 1783 * interrupt processing to process it. 1784 */ 1785 void 1786 ohci_abort_xfer(xfer, status) 1787 usbd_xfer_handle xfer; 1788 usbd_status status; 1789 { 1790 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 1791 ohci_soft_ed_t *sed; 1792 1793 DPRINTF(("ohci_abort_xfer: xfer=%p pipe=%p\n", xfer, opipe)); 1794 1795 xfer->status = status; 1796 1797 usb_untimeout(ohci_timeout, xfer, xfer->timo_handle); 1798 1799 sed = opipe->sed; 1800 DPRINTFN(1,("ohci_abort_xfer: stop ed=%p\n", sed)); 1801 sed->ed.ed_flags |= LE(OHCI_ED_SKIP); /* force hardware skip */ 1802 1803 #if 1 1804 if (xfer->device->bus->intr_context) { 1805 /* We have no process context, so we can't use tsleep(). */ 1806 timeout(ohci_abort_xfer_end, xfer, hz / USB_FRAMES_PER_SECOND); 1807 } else { 1808 #if defined(DIAGNOSTIC) && defined(__i386__) && defined(__FreeBSD__) 1809 KASSERT(intr_nesting_level == 0, 1810 ("ohci_abort_req in interrupt context")); 1811 #endif 1812 usb_delay_ms(opipe->pipe.device->bus, 1); 1813 ohci_abort_xfer_end(xfer); 1814 } 1815 #else 1816 delay(1000); 1817 ohci_abort_xfer_end(xfer); 1818 #endif 1819 } 1820 1821 void 1822 ohci_abort_xfer_end(v) 1823 void *v; 1824 { 1825 usbd_xfer_handle xfer = v; 1826 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 1827 ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus; 1828 ohci_soft_ed_t *sed; 1829 ohci_soft_td_t *p, *n; 1830 int s; 1831 1832 s = splusb(); 1833 1834 p = xfer->hcpriv; 1835 #ifdef DIAGNOSTIC 1836 if (p == NULL) { 1837 printf("ohci_abort_xfer: hcpriv==0\n"); 1838 return; 1839 } 1840 #endif 1841 for (; p->xfer == xfer; p = n) { 1842 n = p->nexttd; 1843 ohci_free_std(sc, p); 1844 } 1845 1846 sed = opipe->sed; 1847 DPRINTFN(2,("ohci_abort_xfer: set hd=%x, tl=%x\n", 1848 (int)LE(p->physaddr), (int)LE(sed->ed.ed_tailp))); 1849 sed->ed.ed_headp = p->physaddr; /* unlink TDs */ 1850 sed->ed.ed_flags &= LE(~OHCI_ED_SKIP); /* remove hardware skip */ 1851 1852 usb_transfer_complete(xfer); 1853 1854 splx(s); 1855 } 1856 1857 /* 1858 * Data structures and routines to emulate the root hub. 1859 */ 1860 static usb_device_descriptor_t ohci_devd = { 1861 USB_DEVICE_DESCRIPTOR_SIZE, 1862 UDESC_DEVICE, /* type */ 1863 {0x00, 0x01}, /* USB version */ 1864 UCLASS_HUB, /* class */ 1865 USUBCLASS_HUB, /* subclass */ 1866 0, /* protocol */ 1867 64, /* max packet */ 1868 {0},{0},{0x00,0x01}, /* device id */ 1869 1,2,0, /* string indicies */ 1870 1 /* # of configurations */ 1871 }; 1872 1873 static usb_config_descriptor_t ohci_confd = { 1874 USB_CONFIG_DESCRIPTOR_SIZE, 1875 UDESC_CONFIG, 1876 {USB_CONFIG_DESCRIPTOR_SIZE + 1877 USB_INTERFACE_DESCRIPTOR_SIZE + 1878 USB_ENDPOINT_DESCRIPTOR_SIZE}, 1879 1, 1880 1, 1881 0, 1882 UC_SELF_POWERED, 1883 0 /* max power */ 1884 }; 1885 1886 static usb_interface_descriptor_t ohci_ifcd = { 1887 USB_INTERFACE_DESCRIPTOR_SIZE, 1888 UDESC_INTERFACE, 1889 0, 1890 0, 1891 1, 1892 UCLASS_HUB, 1893 USUBCLASS_HUB, 1894 0, 1895 0 1896 }; 1897 1898 static usb_endpoint_descriptor_t ohci_endpd = { 1899 USB_ENDPOINT_DESCRIPTOR_SIZE, 1900 UDESC_ENDPOINT, 1901 UE_DIR_IN | OHCI_INTR_ENDPT, 1902 UE_INTERRUPT, 1903 {8, 0}, /* max packet */ 1904 255 1905 }; 1906 1907 static usb_hub_descriptor_t ohci_hubd = { 1908 USB_HUB_DESCRIPTOR_SIZE, 1909 UDESC_HUB, 1910 0, 1911 {0,0}, 1912 0, 1913 0, 1914 {0}, 1915 }; 1916 1917 static int 1918 ohci_str(p, l, s) 1919 usb_string_descriptor_t *p; 1920 int l; 1921 char *s; 1922 { 1923 int i; 1924 1925 if (l == 0) 1926 return (0); 1927 p->bLength = 2 * strlen(s) + 2; 1928 if (l == 1) 1929 return (1); 1930 p->bDescriptorType = UDESC_STRING; 1931 l -= 2; 1932 for (i = 0; s[i] && l > 1; i++, l -= 2) 1933 USETW2(p->bString[i], 0, s[i]); 1934 return (2*i+2); 1935 } 1936 1937 /* 1938 * Simulate a hardware hub by handling all the necessary requests. 1939 */ 1940 static usbd_status 1941 ohci_root_ctrl_transfer(xfer) 1942 usbd_xfer_handle xfer; 1943 { 1944 usbd_status err; 1945 1946 /* Insert last in queue. */ 1947 err = usb_insert_transfer(xfer); 1948 if (err) 1949 return (err); 1950 1951 /* Pipe isn't running, start first */ 1952 return (ohci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 1953 } 1954 1955 static usbd_status 1956 ohci_root_ctrl_start(xfer) 1957 usbd_xfer_handle xfer; 1958 { 1959 ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus; 1960 usb_device_request_t *req; 1961 void *buf = NULL; 1962 int port, i; 1963 int s, len, value, index, l, totlen = 0; 1964 usb_port_status_t ps; 1965 usb_hub_descriptor_t hubd; 1966 usbd_status err; 1967 u_int32_t v; 1968 1969 #ifdef DIAGNOSTIC 1970 if (!(xfer->rqflags & URQ_REQUEST)) 1971 /* XXX panic */ 1972 return (USBD_INVAL); 1973 #endif 1974 req = &xfer->request; 1975 1976 DPRINTFN(4,("ohci_root_ctrl_control type=0x%02x request=%02x\n", 1977 req->bmRequestType, req->bRequest)); 1978 1979 len = UGETW(req->wLength); 1980 value = UGETW(req->wValue); 1981 index = UGETW(req->wIndex); 1982 1983 if (len != 0) 1984 buf = KERNADDR(&xfer->dmabuf); 1985 1986 #define C(x,y) ((x) | ((y) << 8)) 1987 switch(C(req->bRequest, req->bmRequestType)) { 1988 case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE): 1989 case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE): 1990 case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT): 1991 /* 1992 * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops 1993 * for the integrated root hub. 1994 */ 1995 break; 1996 case C(UR_GET_CONFIG, UT_READ_DEVICE): 1997 if (len > 0) { 1998 *(u_int8_t *)buf = sc->sc_conf; 1999 totlen = 1; 2000 } 2001 break; 2002 case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE): 2003 DPRINTFN(8,("ohci_root_ctrl_control wValue=0x%04x\n", value)); 2004 switch(value >> 8) { 2005 case UDESC_DEVICE: 2006 if ((value & 0xff) != 0) { 2007 err = USBD_IOERROR; 2008 goto ret; 2009 } 2010 totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE); 2011 USETW(ohci_devd.idVendor, sc->sc_id_vendor); 2012 memcpy(buf, &ohci_devd, l); 2013 break; 2014 case UDESC_CONFIG: 2015 if ((value & 0xff) != 0) { 2016 err = USBD_IOERROR; 2017 goto ret; 2018 } 2019 totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE); 2020 memcpy(buf, &ohci_confd, l); 2021 buf = (char *)buf + l; 2022 len -= l; 2023 l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE); 2024 totlen += l; 2025 memcpy(buf, &ohci_ifcd, l); 2026 buf = (char *)buf + l; 2027 len -= l; 2028 l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE); 2029 totlen += l; 2030 memcpy(buf, &ohci_endpd, l); 2031 break; 2032 case UDESC_STRING: 2033 if (len == 0) 2034 break; 2035 *(u_int8_t *)buf = 0; 2036 totlen = 1; 2037 switch (value & 0xff) { 2038 case 1: /* Vendor */ 2039 totlen = ohci_str(buf, len, sc->sc_vendor); 2040 break; 2041 case 2: /* Product */ 2042 totlen = ohci_str(buf, len, "OHCI root hub"); 2043 break; 2044 } 2045 break; 2046 default: 2047 err = USBD_IOERROR; 2048 goto ret; 2049 } 2050 break; 2051 case C(UR_GET_INTERFACE, UT_READ_INTERFACE): 2052 if (len > 0) { 2053 *(u_int8_t *)buf = 0; 2054 totlen = 1; 2055 } 2056 break; 2057 case C(UR_GET_STATUS, UT_READ_DEVICE): 2058 if (len > 1) { 2059 USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED); 2060 totlen = 2; 2061 } 2062 break; 2063 case C(UR_GET_STATUS, UT_READ_INTERFACE): 2064 case C(UR_GET_STATUS, UT_READ_ENDPOINT): 2065 if (len > 1) { 2066 USETW(((usb_status_t *)buf)->wStatus, 0); 2067 totlen = 2; 2068 } 2069 break; 2070 case C(UR_SET_ADDRESS, UT_WRITE_DEVICE): 2071 if (value >= USB_MAX_DEVICES) { 2072 err = USBD_IOERROR; 2073 goto ret; 2074 } 2075 sc->sc_addr = value; 2076 break; 2077 case C(UR_SET_CONFIG, UT_WRITE_DEVICE): 2078 if (value != 0 && value != 1) { 2079 err = USBD_IOERROR; 2080 goto ret; 2081 } 2082 sc->sc_conf = value; 2083 break; 2084 case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE): 2085 break; 2086 case C(UR_SET_FEATURE, UT_WRITE_DEVICE): 2087 case C(UR_SET_FEATURE, UT_WRITE_INTERFACE): 2088 case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT): 2089 err = USBD_IOERROR; 2090 goto ret; 2091 case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE): 2092 break; 2093 case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT): 2094 break; 2095 /* Hub requests */ 2096 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE): 2097 break; 2098 case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER): 2099 DPRINTFN(8, ("ohci_root_ctrl_control: UR_CLEAR_PORT_FEATURE " 2100 "port=%d feature=%d\n", 2101 index, value)); 2102 if (index < 1 || index > sc->sc_noport) { 2103 err = USBD_IOERROR; 2104 goto ret; 2105 } 2106 port = OHCI_RH_PORT_STATUS(index); 2107 switch(value) { 2108 case UHF_PORT_ENABLE: 2109 OWRITE4(sc, port, UPS_CURRENT_CONNECT_STATUS); 2110 break; 2111 case UHF_PORT_SUSPEND: 2112 OWRITE4(sc, port, UPS_OVERCURRENT_INDICATOR); 2113 break; 2114 case UHF_PORT_POWER: 2115 OWRITE4(sc, port, UPS_LOW_SPEED); 2116 break; 2117 case UHF_C_PORT_CONNECTION: 2118 OWRITE4(sc, port, UPS_C_CONNECT_STATUS << 16); 2119 break; 2120 case UHF_C_PORT_ENABLE: 2121 OWRITE4(sc, port, UPS_C_PORT_ENABLED << 16); 2122 break; 2123 case UHF_C_PORT_SUSPEND: 2124 OWRITE4(sc, port, UPS_C_SUSPEND << 16); 2125 break; 2126 case UHF_C_PORT_OVER_CURRENT: 2127 OWRITE4(sc, port, UPS_C_OVERCURRENT_INDICATOR << 16); 2128 break; 2129 case UHF_C_PORT_RESET: 2130 OWRITE4(sc, port, UPS_C_PORT_RESET << 16); 2131 break; 2132 default: 2133 err = USBD_IOERROR; 2134 goto ret; 2135 } 2136 switch(value) { 2137 case UHF_C_PORT_CONNECTION: 2138 case UHF_C_PORT_ENABLE: 2139 case UHF_C_PORT_SUSPEND: 2140 case UHF_C_PORT_OVER_CURRENT: 2141 case UHF_C_PORT_RESET: 2142 /* Enable RHSC interrupt if condition is cleared. */ 2143 if ((OREAD4(sc, port) >> 16) == 0) 2144 ohci_rhsc_able(sc, 1); 2145 break; 2146 default: 2147 break; 2148 } 2149 break; 2150 case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE): 2151 if (value != 0) { 2152 err = USBD_IOERROR; 2153 goto ret; 2154 } 2155 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_A); 2156 hubd = ohci_hubd; 2157 hubd.bNbrPorts = sc->sc_noport; 2158 USETW(hubd.wHubCharacteristics, 2159 (v & OHCI_NPS ? UHD_PWR_NO_SWITCH : 2160 v & OHCI_PSM ? UHD_PWR_GANGED : UHD_PWR_INDIVIDUAL) 2161 /* XXX overcurrent */ 2162 ); 2163 hubd.bPwrOn2PwrGood = OHCI_GET_POTPGT(v); 2164 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_B); 2165 for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8) 2166 hubd.DeviceRemovable[i++] = (u_int8_t)v; 2167 hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i; 2168 l = min(len, hubd.bDescLength); 2169 totlen = l; 2170 memcpy(buf, &hubd, l); 2171 break; 2172 case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE): 2173 if (len != 4) { 2174 err = USBD_IOERROR; 2175 goto ret; 2176 } 2177 memset(buf, 0, len); /* ? XXX */ 2178 totlen = len; 2179 break; 2180 case C(UR_GET_STATUS, UT_READ_CLASS_OTHER): 2181 DPRINTFN(8,("ohci_root_ctrl_transfer: get port status i=%d\n", 2182 index)); 2183 if (index < 1 || index > sc->sc_noport) { 2184 err = USBD_IOERROR; 2185 goto ret; 2186 } 2187 if (len != 4) { 2188 err = USBD_IOERROR; 2189 goto ret; 2190 } 2191 v = OREAD4(sc, OHCI_RH_PORT_STATUS(index)); 2192 DPRINTFN(8,("ohci_root_ctrl_transfer: port status=0x%04x\n", 2193 v)); 2194 USETW(ps.wPortStatus, v); 2195 USETW(ps.wPortChange, v >> 16); 2196 l = min(len, sizeof ps); 2197 memcpy(buf, &ps, l); 2198 totlen = l; 2199 break; 2200 case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE): 2201 err = USBD_IOERROR; 2202 goto ret; 2203 case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE): 2204 break; 2205 case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER): 2206 if (index < 1 || index > sc->sc_noport) { 2207 err = USBD_IOERROR; 2208 goto ret; 2209 } 2210 port = OHCI_RH_PORT_STATUS(index); 2211 switch(value) { 2212 case UHF_PORT_ENABLE: 2213 OWRITE4(sc, port, UPS_PORT_ENABLED); 2214 break; 2215 case UHF_PORT_SUSPEND: 2216 OWRITE4(sc, port, UPS_SUSPEND); 2217 break; 2218 case UHF_PORT_RESET: 2219 DPRINTFN(5,("ohci_root_ctrl_transfer: reset port %d\n", 2220 index)); 2221 OWRITE4(sc, port, UPS_RESET); 2222 for (i = 0; i < 10; i++) { 2223 usb_delay_ms(&sc->sc_bus, 10); 2224 if ((OREAD4(sc, port) & UPS_RESET) == 0) 2225 break; 2226 } 2227 DPRINTFN(8,("ohci port %d reset, status = 0x%04x\n", 2228 index, OREAD4(sc, port))); 2229 break; 2230 case UHF_PORT_POWER: 2231 DPRINTFN(2,("ohci_root_ctrl_transfer: set port power " 2232 "%d\n", index)); 2233 OWRITE4(sc, port, UPS_PORT_POWER); 2234 break; 2235 default: 2236 err = USBD_IOERROR; 2237 goto ret; 2238 } 2239 break; 2240 default: 2241 err = USBD_IOERROR; 2242 goto ret; 2243 } 2244 xfer->actlen = totlen; 2245 err = USBD_NORMAL_COMPLETION; 2246 ret: 2247 xfer->status = err; 2248 s = splusb(); 2249 usb_transfer_complete(xfer); 2250 splx(s); 2251 return (USBD_IN_PROGRESS); 2252 } 2253 2254 /* Abort a root control request. */ 2255 static void 2256 ohci_root_ctrl_abort(xfer) 2257 usbd_xfer_handle xfer; 2258 { 2259 /* Nothing to do, all transfers are synchronous. */ 2260 } 2261 2262 /* Close the root pipe. */ 2263 static void 2264 ohci_root_ctrl_close(pipe) 2265 usbd_pipe_handle pipe; 2266 { 2267 DPRINTF(("ohci_root_ctrl_close\n")); 2268 /* Nothing to do. */ 2269 } 2270 2271 static usbd_status 2272 ohci_root_intr_transfer(xfer) 2273 usbd_xfer_handle xfer; 2274 { 2275 usbd_status err; 2276 2277 /* Insert last in queue. */ 2278 err = usb_insert_transfer(xfer); 2279 if (err) 2280 return (err); 2281 2282 /* Pipe isn't running, start first */ 2283 return (ohci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2284 } 2285 2286 static usbd_status 2287 ohci_root_intr_start(xfer) 2288 usbd_xfer_handle xfer; 2289 { 2290 usbd_pipe_handle pipe = xfer->pipe; 2291 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2292 2293 sc->sc_intrxfer = xfer; 2294 2295 return (USBD_IN_PROGRESS); 2296 } 2297 2298 /* Abort a root interrupt request. */ 2299 static void 2300 ohci_root_intr_abort(xfer) 2301 usbd_xfer_handle xfer; 2302 { 2303 int s; 2304 2305 if (xfer->pipe->intrxfer == xfer) { 2306 DPRINTF(("ohci_root_intr_abort: remove\n")); 2307 xfer->pipe->intrxfer = NULL; 2308 } 2309 xfer->status = USBD_CANCELLED; 2310 s = splusb(); 2311 usb_transfer_complete(xfer); 2312 splx(s); 2313 } 2314 2315 /* Close the root pipe. */ 2316 static void 2317 ohci_root_intr_close(pipe) 2318 usbd_pipe_handle pipe; 2319 { 2320 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2321 2322 DPRINTF(("ohci_root_intr_close\n")); 2323 2324 sc->sc_intrxfer = NULL; 2325 } 2326 2327 /************************/ 2328 2329 static usbd_status 2330 ohci_device_ctrl_transfer(xfer) 2331 usbd_xfer_handle xfer; 2332 { 2333 usbd_status err; 2334 2335 /* Insert last in queue. */ 2336 err = usb_insert_transfer(xfer); 2337 if (err) 2338 return (err); 2339 2340 /* Pipe isn't running, start first */ 2341 return (ohci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2342 } 2343 2344 static usbd_status 2345 ohci_device_ctrl_start(xfer) 2346 usbd_xfer_handle xfer; 2347 { 2348 ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus; 2349 usbd_status err; 2350 2351 #ifdef DIAGNOSTIC 2352 if (!(xfer->rqflags & URQ_REQUEST)) { 2353 /* XXX panic */ 2354 printf("ohci_device_ctrl_transfer: not a request\n"); 2355 return (USBD_INVAL); 2356 } 2357 #endif 2358 2359 err = ohci_device_request(xfer); 2360 if (err) 2361 return (err); 2362 2363 if (sc->sc_bus.use_polling) 2364 ohci_waitintr(sc, xfer); 2365 return (USBD_IN_PROGRESS); 2366 } 2367 2368 /* Abort a device control request. */ 2369 static void 2370 ohci_device_ctrl_abort(xfer) 2371 usbd_xfer_handle xfer; 2372 { 2373 DPRINTF(("ohci_device_ctrl_abort: xfer=%p\n", xfer)); 2374 ohci_abort_xfer(xfer, USBD_CANCELLED); 2375 } 2376 2377 /* Close a device control pipe. */ 2378 static void 2379 ohci_device_ctrl_close(pipe) 2380 usbd_pipe_handle pipe; 2381 { 2382 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2383 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2384 2385 DPRINTF(("ohci_device_ctrl_close: pipe=%p\n", pipe)); 2386 ohci_close_pipe(pipe, sc->sc_ctrl_head); 2387 ohci_free_std(sc, opipe->tail.td); 2388 } 2389 2390 /************************/ 2391 2392 static void 2393 ohci_device_clear_toggle(pipe) 2394 usbd_pipe_handle pipe; 2395 { 2396 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2397 2398 opipe->sed->ed.ed_headp &= LE(~OHCI_TOGGLECARRY); 2399 } 2400 2401 static void 2402 ohci_noop(pipe) 2403 usbd_pipe_handle pipe; 2404 { 2405 } 2406 2407 static usbd_status 2408 ohci_device_bulk_transfer(xfer) 2409 usbd_xfer_handle xfer; 2410 { 2411 usbd_status err; 2412 2413 /* Insert last in queue. */ 2414 err = usb_insert_transfer(xfer); 2415 if (err) 2416 return (err); 2417 2418 /* Pipe isn't running, start first */ 2419 return (ohci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2420 } 2421 2422 static usbd_status 2423 ohci_device_bulk_start(xfer) 2424 usbd_xfer_handle xfer; 2425 { 2426 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 2427 usbd_device_handle dev = opipe->pipe.device; 2428 ohci_softc_t *sc = (ohci_softc_t *)dev->bus; 2429 int addr = dev->address; 2430 ohci_soft_td_t *data, *tail, *tdp; 2431 ohci_soft_ed_t *sed; 2432 int s, len, isread, endpt; 2433 usbd_status err; 2434 2435 #ifdef DIAGNOSTIC 2436 if (xfer->rqflags & URQ_REQUEST) { 2437 /* XXX panic */ 2438 printf("ohci_device_bulk_start: a request\n"); 2439 return (USBD_INVAL); 2440 } 2441 #endif 2442 2443 len = xfer->length; 2444 endpt = xfer->pipe->endpoint->edesc->bEndpointAddress; 2445 isread = UE_GET_DIR(endpt) == UE_DIR_IN; 2446 sed = opipe->sed; 2447 2448 DPRINTFN(4,("ohci_device_bulk_start: xfer=%p len=%d isread=%d " 2449 "flags=%d endpt=%d\n", xfer, len, isread, xfer->flags, 2450 endpt)); 2451 2452 opipe->u.bulk.isread = isread; 2453 opipe->u.bulk.length = len; 2454 2455 /* Update device address */ 2456 sed->ed.ed_flags = LE( 2457 (LE(sed->ed.ed_flags) & ~OHCI_ED_ADDRMASK) | 2458 OHCI_ED_SET_FA(addr)); 2459 2460 /* Allocate a chain of new TDs (including a new tail). */ 2461 data = opipe->tail.td; 2462 err = ohci_alloc_std_chain(opipe, sc, len, isread, xfer->flags, 2463 &xfer->dmabuf, data, &tail); 2464 if (err) 2465 return (err); 2466 2467 tail->xfer = NULL; 2468 xfer->hcpriv = data; 2469 2470 DPRINTFN(4,("ohci_device_bulk_start: ed_flags=0x%08x td_flags=0x%08x " 2471 "td_cbp=0x%08x td_be=0x%08x\n", 2472 (int)LE(sed->ed.ed_flags), (int)LE(data->td.td_flags), 2473 (int)LE(data->td.td_cbp), (int)LE(data->td.td_be))); 2474 2475 #ifdef OHCI_DEBUG 2476 if (ohcidebug > 4) { 2477 ohci_dump_ed(sed); 2478 ohci_dump_tds(data); 2479 } 2480 #endif 2481 2482 /* Insert ED in schedule */ 2483 s = splusb(); 2484 for (tdp = data; tdp != tail; tdp = tdp->nexttd) { 2485 tdp->xfer = xfer; 2486 } 2487 sed->ed.ed_tailp = LE(tail->physaddr); 2488 opipe->tail.td = tail; 2489 sed->ed.ed_flags &= LE(~OHCI_ED_SKIP); 2490 OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF); 2491 if (xfer->timeout && !sc->sc_bus.use_polling) { 2492 usb_timeout(ohci_timeout, xfer, 2493 MS_TO_TICKS(xfer->timeout), xfer->timo_handle); 2494 } 2495 2496 #if 0 2497 /* This goes wrong if we are too slow. */ 2498 if (ohcidebug > 5) { 2499 usb_delay_ms(&sc->sc_bus, 5); 2500 DPRINTF(("ohci_device_intr_transfer: status=%x\n", 2501 OREAD4(sc, OHCI_COMMAND_STATUS))); 2502 ohci_dump_ed(sed); 2503 ohci_dump_tds(data); 2504 } 2505 #endif 2506 2507 splx(s); 2508 2509 return (USBD_IN_PROGRESS); 2510 } 2511 2512 static void 2513 ohci_device_bulk_abort(xfer) 2514 usbd_xfer_handle xfer; 2515 { 2516 DPRINTF(("ohci_device_bulk_abort: xfer=%p\n", xfer)); 2517 ohci_abort_xfer(xfer, USBD_CANCELLED); 2518 } 2519 2520 /* 2521 * Close a device bulk pipe. 2522 */ 2523 static void 2524 ohci_device_bulk_close(pipe) 2525 usbd_pipe_handle pipe; 2526 { 2527 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2528 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2529 2530 DPRINTF(("ohci_device_bulk_close: pipe=%p\n", pipe)); 2531 ohci_close_pipe(pipe, sc->sc_bulk_head); 2532 ohci_free_std(sc, opipe->tail.td); 2533 } 2534 2535 /************************/ 2536 2537 static usbd_status 2538 ohci_device_intr_transfer(xfer) 2539 usbd_xfer_handle xfer; 2540 { 2541 usbd_status err; 2542 2543 /* Insert last in queue. */ 2544 err = usb_insert_transfer(xfer); 2545 if (err) 2546 return (err); 2547 2548 /* Pipe isn't running, start first */ 2549 return (ohci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue))); 2550 } 2551 2552 static usbd_status 2553 ohci_device_intr_start(xfer) 2554 usbd_xfer_handle xfer; 2555 { 2556 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 2557 usbd_device_handle dev = opipe->pipe.device; 2558 ohci_softc_t *sc = (ohci_softc_t *)dev->bus; 2559 ohci_soft_ed_t *sed = opipe->sed; 2560 ohci_soft_td_t *data, *tail; 2561 int len; 2562 int s; 2563 2564 DPRINTFN(3, ("ohci_device_intr_transfer: xfer=%p len=%d " 2565 "flags=%d priv=%p\n", 2566 xfer, xfer->length, xfer->flags, xfer->priv)); 2567 2568 #ifdef DIAGNOSTIC 2569 if (xfer->rqflags & URQ_REQUEST) 2570 panic("ohci_device_intr_transfer: a request\n"); 2571 #endif 2572 2573 len = xfer->length; 2574 2575 data = opipe->tail.td; 2576 tail = ohci_alloc_std(sc); 2577 if (tail == NULL) 2578 return (USBD_NOMEM); 2579 tail->xfer = NULL; 2580 2581 data->td.td_flags = LE( 2582 OHCI_TD_IN | OHCI_TD_NOCC | 2583 OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY); 2584 if (xfer->flags & USBD_SHORT_XFER_OK) 2585 data->td.td_flags |= LE(OHCI_TD_R); 2586 data->td.td_cbp = LE(DMAADDR(&xfer->dmabuf)); 2587 data->nexttd = tail; 2588 data->td.td_nexttd = LE(tail->physaddr); 2589 data->td.td_be = LE(LE(data->td.td_cbp) + len - 1); 2590 data->len = len; 2591 data->xfer = xfer; 2592 data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN; 2593 xfer->hcpriv = data; 2594 2595 #ifdef OHCI_DEBUG 2596 if (ohcidebug > 5) { 2597 DPRINTF(("ohci_device_intr_transfer:\n")); 2598 ohci_dump_ed(sed); 2599 ohci_dump_tds(data); 2600 } 2601 #endif 2602 2603 /* Insert ED in schedule */ 2604 s = splusb(); 2605 sed->ed.ed_tailp = LE(tail->physaddr); 2606 opipe->tail.td = tail; 2607 sed->ed.ed_flags &= LE(~OHCI_ED_SKIP); 2608 2609 #if 0 2610 /* 2611 * This goes horribly wrong, printing thousands of descriptors, 2612 * because false references are followed due to the fact that the 2613 * TD is gone. 2614 */ 2615 if (ohcidebug > 5) { 2616 usb_delay_ms(&sc->sc_bus, 5); 2617 DPRINTF(("ohci_device_intr_transfer: status=%x\n", 2618 OREAD4(sc, OHCI_COMMAND_STATUS))); 2619 ohci_dump_ed(sed); 2620 ohci_dump_tds(data); 2621 } 2622 #endif 2623 splx(s); 2624 2625 return (USBD_IN_PROGRESS); 2626 } 2627 2628 /* Abort a device control request. */ 2629 static void 2630 ohci_device_intr_abort(xfer) 2631 usbd_xfer_handle xfer; 2632 { 2633 if (xfer->pipe->intrxfer == xfer) { 2634 DPRINTF(("ohci_device_intr_abort: remove\n")); 2635 xfer->pipe->intrxfer = NULL; 2636 } 2637 ohci_abort_xfer(xfer, USBD_CANCELLED); 2638 } 2639 2640 /* Close a device interrupt pipe. */ 2641 static void 2642 ohci_device_intr_close(pipe) 2643 usbd_pipe_handle pipe; 2644 { 2645 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2646 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2647 int nslots = opipe->u.intr.nslots; 2648 int pos = opipe->u.intr.pos; 2649 int j; 2650 ohci_soft_ed_t *p, *sed = opipe->sed; 2651 int s; 2652 2653 DPRINTFN(1,("ohci_device_intr_close: pipe=%p nslots=%d pos=%d\n", 2654 pipe, nslots, pos)); 2655 s = splusb(); 2656 sed->ed.ed_flags |= LE(OHCI_ED_SKIP); 2657 if ((sed->ed.ed_tailp & LE(OHCI_HEADMASK)) != 2658 (sed->ed.ed_headp & LE(OHCI_HEADMASK))) 2659 usb_delay_ms(&sc->sc_bus, 2); 2660 2661 for (p = sc->sc_eds[pos]; p && p->next != sed; p = p->next) 2662 ; 2663 #ifdef DIAGNOSTIC 2664 if (p == NULL) 2665 panic("ohci_device_intr_close: ED not found\n"); 2666 #endif 2667 p->next = sed->next; 2668 p->ed.ed_nexted = sed->ed.ed_nexted; 2669 splx(s); 2670 2671 for (j = 0; j < nslots; j++) 2672 --sc->sc_bws[(pos * nslots + j) % OHCI_NO_INTRS]; 2673 2674 ohci_free_std(sc, opipe->tail.td); 2675 ohci_free_sed(sc, opipe->sed); 2676 } 2677 2678 static usbd_status 2679 ohci_device_setintr(sc, opipe, ival) 2680 ohci_softc_t *sc; 2681 struct ohci_pipe *opipe; 2682 int ival; 2683 { 2684 int i, j, s, best; 2685 u_int npoll, slow, shigh, nslots; 2686 u_int bestbw, bw; 2687 ohci_soft_ed_t *hsed, *sed = opipe->sed; 2688 2689 DPRINTFN(2, ("ohci_setintr: pipe=%p\n", opipe)); 2690 if (ival == 0) { 2691 printf("ohci_setintr: 0 interval\n"); 2692 return (USBD_INVAL); 2693 } 2694 2695 npoll = OHCI_NO_INTRS; 2696 while (npoll > ival) 2697 npoll /= 2; 2698 DPRINTFN(2, ("ohci_setintr: ival=%d npoll=%d\n", ival, npoll)); 2699 2700 /* 2701 * We now know which level in the tree the ED must go into. 2702 * Figure out which slot has most bandwidth left over. 2703 * Slots to examine: 2704 * npoll 2705 * 1 0 2706 * 2 1 2 2707 * 4 3 4 5 6 2708 * 8 7 8 9 10 11 12 13 14 2709 * N (N-1) .. (N-1+N-1) 2710 */ 2711 slow = npoll-1; 2712 shigh = slow + npoll; 2713 nslots = OHCI_NO_INTRS / npoll; 2714 for (best = i = slow, bestbw = ~0; i < shigh; i++) { 2715 bw = 0; 2716 for (j = 0; j < nslots; j++) 2717 bw += sc->sc_bws[(i * nslots + j) % OHCI_NO_INTRS]; 2718 if (bw < bestbw) { 2719 best = i; 2720 bestbw = bw; 2721 } 2722 } 2723 DPRINTFN(2, ("ohci_setintr: best=%d(%d..%d) bestbw=%d\n", 2724 best, slow, shigh, bestbw)); 2725 2726 s = splusb(); 2727 hsed = sc->sc_eds[best]; 2728 sed->next = hsed->next; 2729 sed->ed.ed_nexted = hsed->ed.ed_nexted; 2730 hsed->next = sed; 2731 hsed->ed.ed_nexted = LE(sed->physaddr); 2732 splx(s); 2733 2734 for (j = 0; j < nslots; j++) 2735 ++sc->sc_bws[(best * nslots + j) % OHCI_NO_INTRS]; 2736 opipe->u.intr.nslots = nslots; 2737 opipe->u.intr.pos = best; 2738 2739 DPRINTFN(5, ("ohci_setintr: returns %p\n", opipe)); 2740 return (USBD_NORMAL_COMPLETION); 2741 } 2742 2743 /***********************/ 2744 2745 usbd_status 2746 ohci_device_isoc_transfer(xfer) 2747 usbd_xfer_handle xfer; 2748 { 2749 usbd_status err; 2750 2751 DPRINTFN(5,("ohci_device_isoc_transfer: xfer=%p\n", xfer)); 2752 2753 /* Put it on our queue, */ 2754 err = usb_insert_transfer(xfer); 2755 2756 /* bail out on error, */ 2757 if (err && err != USBD_IN_PROGRESS) 2758 return (err); 2759 2760 /* XXX should check inuse here */ 2761 2762 /* insert into schedule, */ 2763 ohci_device_isoc_enter(xfer); 2764 2765 /* and put on interrupt list if the pipe wasn't running */ 2766 if (!err) 2767 ohci_device_isoc_start(SIMPLEQ_FIRST(&xfer->pipe->queue)); 2768 2769 return (err); 2770 } 2771 2772 void 2773 ohci_device_isoc_enter(xfer) 2774 usbd_xfer_handle xfer; 2775 { 2776 struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe; 2777 usbd_device_handle dev = opipe->pipe.device; 2778 ohci_softc_t *sc = (ohci_softc_t *)dev->bus; 2779 ohci_soft_ed_t *sed = opipe->sed; 2780 struct iso *iso = &opipe->u.iso; 2781 ohci_soft_itd_t *sitd, *nsitd; 2782 ohci_physaddr_t buf, offs; 2783 int i, ncur, nframes; 2784 int ncross; 2785 int s; 2786 2787 s = splusb(); 2788 sitd = opipe->tail.itd; 2789 buf = DMAADDR(&xfer->dmabuf); 2790 sitd->itd.itd_bp0 = LE(buf & OHCI_ITD_PAGE_MASK); 2791 nframes = xfer->nframes; 2792 offs = buf & OHCI_ITD_OFFSET_MASK; 2793 for (i = ncur = 0; i < nframes; i++, ncur++) { 2794 if (ncur == OHCI_ITD_NOFFSET || /* all offsets used */ 2795 ncross > 1) { /* too many page crossings */ 2796 2797 nsitd = ohci_alloc_sitd(sc); 2798 if (nsitd == NULL) { 2799 /* XXX what now? */ 2800 return; 2801 } 2802 sitd->nextitd = nsitd; 2803 sitd->itd.itd_nextitd = LE(nsitd->physaddr); 2804 sitd->itd.itd_flags = LE( 2805 OHCI_ITD_NOCC | 2806 OHCI_ITD_SET_SF(iso->next) | 2807 OHCI_ITD_NOINTR | 2808 OHCI_ITD_SET_FC(OHCI_ITD_NOFFSET)); 2809 sitd->itd.itd_be = LE(LE(sitd->itd.itd_bp0) + offs - 1); 2810 nsitd->itd.itd_bp0 = LE((buf + offs) & OHCI_ITD_PAGE_MASK); 2811 sitd = nsitd; 2812 iso->next = iso->next + ncur; 2813 ncur = 0; 2814 ncross = 0; 2815 } 2816 /* XXX byte order */ 2817 sitd->itd.itd_offset[i] = 2818 offs | (ncross == 1 ? OHCI_ITD_PAGE_SELECT : 0); 2819 offs += xfer->frlengths[i]; 2820 /* XXX update ncross */ 2821 } 2822 nsitd = ohci_alloc_sitd(sc); 2823 if (nsitd == NULL) { 2824 /* XXX what now? */ 2825 return; 2826 } 2827 sitd->nextitd = nsitd; 2828 sitd->itd.itd_nextitd = LE(nsitd->physaddr); 2829 sitd->itd.itd_flags = LE( 2830 OHCI_ITD_NOCC | 2831 OHCI_ITD_SET_SF(iso->next) | 2832 OHCI_ITD_SET_DI(0) | 2833 OHCI_ITD_SET_FC(ncur)); 2834 sitd->itd.itd_be = LE(LE(sitd->itd.itd_bp0) + offs - 1); 2835 iso->next = iso->next + ncur; 2836 2837 opipe->tail.itd = nsitd; 2838 sed->ed.ed_tailp = LE(nsitd->physaddr); 2839 /* XXX update ED */ 2840 splx(s); 2841 } 2842 2843 usbd_status 2844 ohci_device_isoc_start(xfer) 2845 usbd_xfer_handle xfer; 2846 { 2847 printf("ohci_device_isoc_start: not implemented\n"); 2848 return (USBD_INVAL); 2849 } 2850 2851 void 2852 ohci_device_isoc_abort(xfer) 2853 usbd_xfer_handle xfer; 2854 { 2855 } 2856 2857 void 2858 ohci_device_isoc_done(xfer) 2859 usbd_xfer_handle xfer; 2860 { 2861 printf("ohci_device_isoc_done: not implemented\n"); 2862 } 2863 2864 usbd_status 2865 ohci_setup_isoc(pipe) 2866 usbd_pipe_handle pipe; 2867 { 2868 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2869 struct iso *iso = &opipe->u.iso; 2870 2871 iso->next = -1; 2872 iso->inuse = 0; 2873 2874 return (USBD_NORMAL_COMPLETION); 2875 } 2876 2877 void 2878 ohci_device_isoc_close(pipe) 2879 usbd_pipe_handle pipe; 2880 { 2881 struct ohci_pipe *opipe = (struct ohci_pipe *)pipe; 2882 ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus; 2883 2884 DPRINTF(("ohci_device_isoc_close: pipe=%p\n", pipe)); 2885 ohci_close_pipe(pipe, sc->sc_isoc_head); 2886 ohci_free_sitd(sc, opipe->tail.itd); 2887 } 2888
Indexes created Wed Sep 24 05:09:52 GMT 2025