6/sys/dev/usb/ohci.c

   1 /*      $NetBSD: ohci.c,v 1.138 2003/02/08 03:32:50 ichiro Exp $        */
   2
   3 /* Also, already ported:
   4  *      $NetBSD: ohci.c,v 1.140 2003/05/13 04:42:00 gson Exp $
   5  *      $NetBSD: ohci.c,v 1.141 2003/09/10 20:08:29 mycroft Exp $
   6  *      $NetBSD: ohci.c,v 1.142 2003/10/11 03:04:26 toshii Exp $
   7  *      $NetBSD: ohci.c,v 1.143 2003/10/18 04:50:35 simonb Exp $
   8  *      $NetBSD: ohci.c,v 1.144 2003/11/23 19:18:06 augustss Exp $
   9  *      $NetBSD: ohci.c,v 1.145 2003/11/23 19:20:25 augustss Exp $
  10  *      $NetBSD: ohci.c,v 1.146 2003/12/29 08:17:10 toshii Exp $
  11  *      $NetBSD: ohci.c,v 1.147 2004/06/22 07:20:35 mycroft Exp $
  12  *      $NetBSD: ohci.c,v 1.148 2004/06/22 18:27:46 mycroft Exp $
  13  */
  14
  15 #include <sys/cdefs.h>
  16 __FBSDID("$FreeBSD$");
  17
  18 /*-
  19  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  20  * All rights reserved.
  21  *
  22  * This code is derived from software contributed to The NetBSD Foundation
  23  * by Lennart Augustsson (lennart@augustsson.net) at
  24  * Carlstedt Research & Technology.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *        This product includes software developed by the NetBSD
  37  *        Foundation, Inc. and its contributors.
  38  * 4. Neither the name of The NetBSD Foundation nor the names of its
  39  *    contributors may be used to endorse or promote products derived
  40  *    from this software without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  43  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  44  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  45  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  46  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  47  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  48  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  49  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  50  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  51  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  52  * POSSIBILITY OF SUCH DAMAGE.
  53  */
  54
  55 /*
  56  * USB Open Host Controller driver.
  57  *
  58  * OHCI spec: http://www.compaq.com/productinfo/development/openhci.html
  59  * USB spec: http://www.usb.org/developers/docs/usbspec.zip
  60  */
  61
  62 #include <sys/param.h>
  63 #include <sys/systm.h>
  64 #include <sys/malloc.h>
  65 #include <sys/kernel.h>
  66 #if defined(__NetBSD__) || defined(__OpenBSD__)
  67 #include <sys/device.h>
  68 #include <sys/select.h>
  69 #elif defined(__FreeBSD__)
  70 #include <sys/endian.h>
  71 #include <sys/module.h>
  72 #include <sys/bus.h>
  73 #if defined(DIAGNOSTIC) && defined(__i386__) && defined(__FreeBSD__)
  74 #include <machine/cpu.h>
  75 #endif
  76 #endif
  77 #include <sys/proc.h>
  78 #include <sys/queue.h>
  79 #include <sys/sysctl.h>
  80
  81 #include <machine/bus.h>
  82 #include <machine/endian.h>
  83
  84 #include <dev/usb/usb.h>
  85 #include <dev/usb/usbdi.h>
  86 #include <dev/usb/usbdivar.h>
  87 #include <dev/usb/usb_mem.h>
  88 #include <dev/usb/usb_quirks.h>
  89
  90 #include <dev/usb/ohcireg.h>
  91 #include <dev/usb/ohcivar.h>
  92
  93 #if defined(__FreeBSD__)
  94 #include <machine/clock.h>
  95
  96 #define delay(d)                DELAY(d)
  97 #endif
  98
  99 #if defined(__OpenBSD__)
 100 struct cfdriver ohci_cd = {
 101         NULL, "ohci", DV_DULL
 102 };
 103 #endif
 104
 105 #ifdef USB_DEBUG
 106 #define DPRINTF(x)      if (ohcidebug) logprintf x
 107 #define DPRINTFN(n,x)   if (ohcidebug>(n)) logprintf x
 108 int ohcidebug = 0;
 109 SYSCTL_NODE(_hw_usb, OID_AUTO, ohci, CTLFLAG_RW, 0, "USB ohci");
 110 SYSCTL_INT(_hw_usb_ohci, OID_AUTO, debug, CTLFLAG_RW,
 111            &ohcidebug, 0, "ohci debug level");
 112 #ifndef __NetBSD__
 113 #define bitmask_snprintf(q,f,b,l) snprintf((b), (l), "%b", (q), (f))
 114 #endif
 115 #else
 116 #define DPRINTF(x)
 117 #define DPRINTFN(n,x)
 118 #endif
 119
 120 /*
 121  * The OHCI controller is little endian, so on big endian machines
 122  * the data strored in memory needs to be swapped.
 123  */
 124 #if defined(__OpenBSD__)
 125 #if BYTE_ORDER == BIG_ENDIAN
 126 #define htole32(x) (bswap32(x))
 127 #define le32toh(x) (bswap32(x))
 128 #else
 129 #define htole32(x) (x)
 130 #define le32toh(x) (x)
 131 #endif
 132 #endif
 133
 134 struct ohci_pipe;
 135
 136 Static ohci_soft_ed_t  *ohci_alloc_sed(ohci_softc_t *);
 137 Static void             ohci_free_sed(ohci_softc_t *, ohci_soft_ed_t *);
 138
 139 Static ohci_soft_td_t  *ohci_alloc_std(ohci_softc_t *);
 140 Static void             ohci_free_std(ohci_softc_t *, ohci_soft_td_t *);
 141
 142 Static ohci_soft_itd_t *ohci_alloc_sitd(ohci_softc_t *);
 143 Static void             ohci_free_sitd(ohci_softc_t *,ohci_soft_itd_t *);
 144
 145 #if 0
 146 Static void             ohci_free_std_chain(ohci_softc_t *, ohci_soft_td_t *,
 147                                             ohci_soft_td_t *);
 148 #endif
 149 Static usbd_status      ohci_alloc_std_chain(struct ohci_pipe *,
 150                             ohci_softc_t *, int, int, usbd_xfer_handle,
 151                             ohci_soft_td_t *, ohci_soft_td_t **);
 152
 153 #if defined(__NetBSD__) || defined(__OpenBSD__)
 154 Static void             ohci_shutdown(void *v);
 155 Static void             ohci_power(int, void *);
 156 #endif
 157 Static usbd_status      ohci_open(usbd_pipe_handle);
 158 Static void             ohci_poll(struct usbd_bus *);
 159 Static void             ohci_softintr(void *);
 160 Static void             ohci_waitintr(ohci_softc_t *, usbd_xfer_handle);
 161 Static void             ohci_add_done(ohci_softc_t *, ohci_physaddr_t);
 162 Static void             ohci_rhsc(ohci_softc_t *, usbd_xfer_handle);
 163
 164 Static usbd_status      ohci_device_request(usbd_xfer_handle xfer);
 165 Static void             ohci_add_ed(ohci_soft_ed_t *, ohci_soft_ed_t *);
 166 Static void             ohci_rem_ed(ohci_soft_ed_t *, ohci_soft_ed_t *);
 167 Static void             ohci_hash_add_td(ohci_softc_t *, ohci_soft_td_t *);
 168 Static void             ohci_hash_rem_td(ohci_softc_t *, ohci_soft_td_t *);
 169 Static ohci_soft_td_t  *ohci_hash_find_td(ohci_softc_t *, ohci_physaddr_t);
 170 Static void             ohci_hash_add_itd(ohci_softc_t *, ohci_soft_itd_t *);
 171 Static void             ohci_hash_rem_itd(ohci_softc_t *, ohci_soft_itd_t *);
 172 Static ohci_soft_itd_t *ohci_hash_find_itd(ohci_softc_t *, ohci_physaddr_t);
 173
 174 Static usbd_status      ohci_setup_isoc(usbd_pipe_handle pipe);
 175 Static void             ohci_device_isoc_enter(usbd_xfer_handle);
 176
 177 Static usbd_status      ohci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t);
 178 Static void             ohci_freem(struct usbd_bus *, usb_dma_t *);
 179
 180 Static usbd_xfer_handle ohci_allocx(struct usbd_bus *);
 181 Static void             ohci_freex(struct usbd_bus *, usbd_xfer_handle);
 182
 183 Static usbd_status      ohci_root_ctrl_transfer(usbd_xfer_handle);
 184 Static usbd_status      ohci_root_ctrl_start(usbd_xfer_handle);
 185 Static void             ohci_root_ctrl_abort(usbd_xfer_handle);
 186 Static void             ohci_root_ctrl_close(usbd_pipe_handle);
 187 Static void             ohci_root_ctrl_done(usbd_xfer_handle);
 188
 189 Static usbd_status      ohci_root_intr_transfer(usbd_xfer_handle);
 190 Static usbd_status      ohci_root_intr_start(usbd_xfer_handle);
 191 Static void             ohci_root_intr_abort(usbd_xfer_handle);
 192 Static void             ohci_root_intr_close(usbd_pipe_handle);
 193 Static void             ohci_root_intr_done(usbd_xfer_handle);
 194
 195 Static usbd_status      ohci_device_ctrl_transfer(usbd_xfer_handle);
 196 Static usbd_status      ohci_device_ctrl_start(usbd_xfer_handle);
 197 Static void             ohci_device_ctrl_abort(usbd_xfer_handle);
 198 Static void             ohci_device_ctrl_close(usbd_pipe_handle);
 199 Static void             ohci_device_ctrl_done(usbd_xfer_handle);
 200
 201 Static usbd_status      ohci_device_bulk_transfer(usbd_xfer_handle);
 202 Static usbd_status      ohci_device_bulk_start(usbd_xfer_handle);
 203 Static void             ohci_device_bulk_abort(usbd_xfer_handle);
 204 Static void             ohci_device_bulk_close(usbd_pipe_handle);
 205 Static void             ohci_device_bulk_done(usbd_xfer_handle);
 206
 207 Static usbd_status      ohci_device_intr_transfer(usbd_xfer_handle);
 208 Static usbd_status      ohci_device_intr_start(usbd_xfer_handle);
 209 Static void             ohci_device_intr_abort(usbd_xfer_handle);
 210 Static void             ohci_device_intr_close(usbd_pipe_handle);
 211 Static void             ohci_device_intr_done(usbd_xfer_handle);
 212
 213 Static usbd_status      ohci_device_isoc_transfer(usbd_xfer_handle);
 214 Static usbd_status      ohci_device_isoc_start(usbd_xfer_handle);
 215 Static void             ohci_device_isoc_abort(usbd_xfer_handle);
 216 Static void             ohci_device_isoc_close(usbd_pipe_handle);
 217 Static void             ohci_device_isoc_done(usbd_xfer_handle);
 218
 219 Static usbd_status      ohci_device_setintr(ohci_softc_t *sc,
 220                             struct ohci_pipe *pipe, int ival);
 221
 222 Static int              ohci_str(usb_string_descriptor_t *, int, const char *);
 223
 224 Static void             ohci_timeout(void *);
 225 Static void             ohci_timeout_task(void *);
 226 Static void             ohci_rhsc_able(ohci_softc_t *, int);
 227 Static void             ohci_rhsc_enable(void *);
 228
 229 Static void             ohci_close_pipe(usbd_pipe_handle, ohci_soft_ed_t *);
 230 Static void             ohci_abort_xfer(usbd_xfer_handle, usbd_status);
 231
 232 Static void             ohci_device_clear_toggle(usbd_pipe_handle pipe);
 233 Static void             ohci_noop(usbd_pipe_handle pipe);
 234
 235 Static usbd_status ohci_controller_init(ohci_softc_t *sc);
 236
 237 #ifdef USB_DEBUG
 238 Static void             ohci_dumpregs(ohci_softc_t *);
 239 Static void             ohci_dump_tds(ohci_soft_td_t *);
 240 Static void             ohci_dump_td(ohci_soft_td_t *);
 241 Static void             ohci_dump_ed(ohci_soft_ed_t *);
 242 Static void             ohci_dump_itd(ohci_soft_itd_t *);
 243 Static void             ohci_dump_itds(ohci_soft_itd_t *);
 244 #endif
 245
 246 #define OBARR(sc) bus_space_barrier((sc)->iot, (sc)->ioh, 0, (sc)->sc_size, \
 247                         BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
 248 #define OWRITE1(sc, r, x) \
 249  do { OBARR(sc); bus_space_write_1((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
 250 #define OWRITE2(sc, r, x) \
 251  do { OBARR(sc); bus_space_write_2((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
 252 #define OWRITE4(sc, r, x) \
 253  do { OBARR(sc); bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
 254 #define OREAD1(sc, r) (OBARR(sc), bus_space_read_1((sc)->iot, (sc)->ioh, (r)))
 255 #define OREAD2(sc, r) (OBARR(sc), bus_space_read_2((sc)->iot, (sc)->ioh, (r)))
 256 #define OREAD4(sc, r) (OBARR(sc), bus_space_read_4((sc)->iot, (sc)->ioh, (r)))
 257
 258 /* Reverse the bits in a value 0 .. 31 */
 259 Static u_int8_t revbits[OHCI_NO_INTRS] =
 260   { 0x00, 0x10, 0x08, 0x18, 0x04, 0x14, 0x0c, 0x1c,
 261     0x02, 0x12, 0x0a, 0x1a, 0x06, 0x16, 0x0e, 0x1e,
 262     0x01, 0x11, 0x09, 0x19, 0x05, 0x15, 0x0d, 0x1d,
 263     0x03, 0x13, 0x0b, 0x1b, 0x07, 0x17, 0x0f, 0x1f };
 264
 265 struct ohci_pipe {
 266         struct usbd_pipe pipe;
 267         ohci_soft_ed_t *sed;
 268         u_int32_t aborting;
 269         union {
 270                 ohci_soft_td_t *td;
 271                 ohci_soft_itd_t *itd;
 272         } tail;
 273         /* Info needed for different pipe kinds. */
 274         union {
 275                 /* Control pipe */
 276                 struct {
 277                         usb_dma_t reqdma;
 278                         u_int length;
 279                         ohci_soft_td_t *setup, *data, *stat;
 280                 } ctl;
 281                 /* Interrupt pipe */
 282                 struct {
 283                         int nslots;
 284                         int pos;
 285                 } intr;
 286                 /* Bulk pipe */
 287                 struct {
 288                         u_int length;
 289                         int isread;
 290                 } bulk;
 291                 /* Iso pipe */
 292                 struct iso {
 293                         int next, inuse;
 294                 } iso;
 295         } u;
 296 };
 297
 298 #define OHCI_INTR_ENDPT 1
 299
 300 Static struct usbd_bus_methods ohci_bus_methods = {
 301         ohci_open,
 302         ohci_softintr,
 303         ohci_poll,
 304         ohci_allocm,
 305         ohci_freem,
 306         ohci_allocx,
 307         ohci_freex,
 308 };
 309
 310 Static struct usbd_pipe_methods ohci_root_ctrl_methods = {
 311         ohci_root_ctrl_transfer,
 312         ohci_root_ctrl_start,
 313         ohci_root_ctrl_abort,
 314         ohci_root_ctrl_close,
 315         ohci_noop,
 316         ohci_root_ctrl_done,
 317 };
 318
 319 Static struct usbd_pipe_methods ohci_root_intr_methods = {
 320         ohci_root_intr_transfer,
 321         ohci_root_intr_start,
 322         ohci_root_intr_abort,
 323         ohci_root_intr_close,
 324         ohci_noop,
 325         ohci_root_intr_done,
 326 };
 327
 328 Static struct usbd_pipe_methods ohci_device_ctrl_methods = {
 329         ohci_device_ctrl_transfer,
 330         ohci_device_ctrl_start,
 331         ohci_device_ctrl_abort,
 332         ohci_device_ctrl_close,
 333         ohci_noop,
 334         ohci_device_ctrl_done,
 335 };
 336
 337 Static struct usbd_pipe_methods ohci_device_intr_methods = {
 338         ohci_device_intr_transfer,
 339         ohci_device_intr_start,
 340         ohci_device_intr_abort,
 341         ohci_device_intr_close,
 342         ohci_device_clear_toggle,
 343         ohci_device_intr_done,
 344 };
 345
 346 Static struct usbd_pipe_methods ohci_device_bulk_methods = {
 347         ohci_device_bulk_transfer,
 348         ohci_device_bulk_start,
 349         ohci_device_bulk_abort,
 350         ohci_device_bulk_close,
 351         ohci_device_clear_toggle,
 352         ohci_device_bulk_done,
 353 };
 354
 355 Static struct usbd_pipe_methods ohci_device_isoc_methods = {
 356         ohci_device_isoc_transfer,
 357         ohci_device_isoc_start,
 358         ohci_device_isoc_abort,
 359         ohci_device_isoc_close,
 360         ohci_noop,
 361         ohci_device_isoc_done,
 362 };
 363
 364 #if defined(__NetBSD__) || defined(__OpenBSD__)
 365 int
 366 ohci_activate(device_ptr_t self, enum devact act)
 367 {
 368         struct ohci_softc *sc = (struct ohci_softc *)self;
 369         int rv = 0;
 370
 371         switch (act) {
 372         case DVACT_ACTIVATE:
 373                 return (EOPNOTSUPP);
 374
 375         case DVACT_DEACTIVATE:
 376                 if (sc->sc_child != NULL)
 377                         rv = config_deactivate(sc->sc_child);
 378                 sc->sc_dying = 1;
 379                 break;
 380         }
 381         return (rv);
 382 }
 383 #endif
 384
 385 int
 386 ohci_detach(struct ohci_softc *sc, int flags)
 387 {
 388         int i, rv = 0;
 389
 390 #if defined(__NetBSD__) || defined(__OpenBSD__)
 391         if (sc->sc_child != NULL)
 392                 rv = config_detach(sc->sc_child, flags);
 393
 394         if (rv != 0)
 395                 return (rv);
 396 #else
 397         sc->sc_dying = 1;
 398 #endif
 399
 400         usb_uncallout(sc->sc_tmo_rhsc, ohci_rhsc_enable, sc);
 401
 402 #if defined(__NetBSD__) || defined(__OpenBSD__)
 403         powerhook_disestablish(sc->sc_powerhook);
 404         shutdownhook_disestablish(sc->sc_shutdownhook);
 405 #endif
 406
 407         OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
 408         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
 409
 410         usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */
 411
 412         for (i = 0; i < OHCI_NO_EDS; i++)
 413                 ohci_free_sed(sc, sc->sc_eds[i]);
 414         ohci_free_sed(sc, sc->sc_isoc_head);
 415         ohci_free_sed(sc, sc->sc_bulk_head);
 416         ohci_free_sed(sc, sc->sc_ctrl_head);
 417         usb_freemem(&sc->sc_bus, &sc->sc_hccadma);
 418
 419         return (rv);
 420 }
 421
 422 ohci_soft_ed_t *
 423 ohci_alloc_sed(ohci_softc_t *sc)
 424 {
 425         ohci_soft_ed_t *sed;
 426         usbd_status err;
 427         int i, offs;
 428         usb_dma_t dma;
 429
 430         if (sc->sc_freeeds == NULL) {
 431                 DPRINTFN(2, ("ohci_alloc_sed: allocating chunk\n"));
 432                 err = usb_allocmem(&sc->sc_bus, OHCI_SED_SIZE * OHCI_SED_CHUNK,
 433                           OHCI_ED_ALIGN, &dma);
 434                 if (err)
 435                         return (NULL);
 436                 for(i = 0; i < OHCI_SED_CHUNK; i++) {
 437                         offs = i * OHCI_SED_SIZE;
 438                         sed = KERNADDR(&dma, offs);
 439                         sed->physaddr = DMAADDR(&dma, offs);
 440                         sed->next = sc->sc_freeeds;
 441                         sc->sc_freeeds = sed;
 442                 }
 443         }
 444         sed = sc->sc_freeeds;
 445         sc->sc_freeeds = sed->next;
 446         memset(&sed->ed, 0, sizeof(ohci_ed_t));
 447         sed->next = 0;
 448         return (sed);
 449 }
 450
 451 void
 452 ohci_free_sed(ohci_softc_t *sc, ohci_soft_ed_t *sed)
 453 {
 454         sed->next = sc->sc_freeeds;
 455         sc->sc_freeeds = sed;
 456 }
 457
 458 ohci_soft_td_t *
 459 ohci_alloc_std(ohci_softc_t *sc)
 460 {
 461         ohci_soft_td_t *std;
 462         usbd_status err;
 463         int i, offs;
 464         usb_dma_t dma;
 465         int s;
 466
 467         if (sc->sc_freetds == NULL) {
 468                 DPRINTFN(2, ("ohci_alloc_std: allocating chunk\n"));
 469                 err = usb_allocmem(&sc->sc_bus, OHCI_STD_SIZE * OHCI_STD_CHUNK,
 470                           OHCI_TD_ALIGN, &dma);
 471                 if (err)
 472                         return (NULL);
 473                 s = splusb();
 474                 for(i = 0; i < OHCI_STD_CHUNK; i++) {
 475                         offs = i * OHCI_STD_SIZE;
 476                         std = KERNADDR(&dma, offs);
 477                         std->physaddr = DMAADDR(&dma, offs);
 478                         std->nexttd = sc->sc_freetds;
 479                         sc->sc_freetds = std;
 480                 }
 481                 splx(s);
 482         }
 483
 484         s = splusb();
 485         std = sc->sc_freetds;
 486         sc->sc_freetds = std->nexttd;
 487         memset(&std->td, 0, sizeof(ohci_td_t));
 488         std->nexttd = NULL;
 489         std->xfer = NULL;
 490         ohci_hash_add_td(sc, std);
 491         splx(s);
 492
 493         return (std);
 494 }
 495
 496 void
 497 ohci_free_std(ohci_softc_t *sc, ohci_soft_td_t *std)
 498 {
 499         int s;
 500
 501         s = splusb();
 502         ohci_hash_rem_td(sc, std);
 503         std->nexttd = sc->sc_freetds;
 504         sc->sc_freetds = std;
 505         splx(s);
 506 }
 507
 508 usbd_status
 509 ohci_alloc_std_chain(struct ohci_pipe *opipe, ohci_softc_t *sc,
 510                      int alen, int rd, usbd_xfer_handle xfer,
 511                      ohci_soft_td_t *sp, ohci_soft_td_t **ep)
 512 {
 513         ohci_soft_td_t *next, *cur;
 514         ohci_physaddr_t dataphys;
 515         u_int32_t tdflags;
 516         int offset = 0;
 517         int len, curlen;
 518         usb_dma_t *dma = &xfer->dmabuf;
 519         u_int16_t flags = xfer->flags;
 520
 521         DPRINTFN(alen < 4096,("ohci_alloc_std_chain: start len=%d\n", alen));
 522
 523         len = alen;
 524         cur = sp;
 525
 526         tdflags = htole32(
 527             (rd ? OHCI_TD_IN : OHCI_TD_OUT) |
 528             (flags & USBD_SHORT_XFER_OK ? OHCI_TD_R : 0) |
 529             OHCI_TD_NOCC | OHCI_TD_TOGGLE_CARRY | OHCI_TD_SET_DI(6));
 530
 531         for (;;) {
 532                 next = ohci_alloc_std(sc);
 533                 if (next == NULL)
 534                         goto nomem;
 535
 536                 dataphys = DMAADDR(dma, offset);
 537
 538                 /*
 539                  * The OHCI hardware can handle at most one 4k crossing.
 540                  * XXX - currently we only allocate contigous buffers, but
 541                  * the OHCI spec says: If during the data transfer the buffer
 542                  * address contained in the HC's working copy of
 543                  * CurrentBufferPointer crosses a 4K boundary, the upper 20
 544                  * bits of Buffer End are copied to the working value of
 545                  * CurrentBufferPointer causing the next buffer address to
 546                  * be the 0th byte in the same 4K page that contains the
 547                  * last byte of the buffer (the 4K boundary crossing may
 548                  * occur within a data packet transfer.)
 549                  *
 550                  * If/when dma has multiple segments, this will need to
 551                  * properly handle fragmenting TD's.
 552                  *
 553                  * Note that if we are gathering data from multiple SMALL
 554                  * segments, e.g. mbufs, we need to do special gymnastics,
 555                  * e.g. bounce buffering or data aggregation,
 556                  * BEFORE WE GET HERE because a bulk USB transfer must
 557                  * consist of maximally sized packets right up to the end.
 558                  * A shorter than maximal packet means that it is the end
 559                  * of the transfer. If the data transfer length is a
 560                  * multiple of the packet size, then a 0 byte
 561                  * packet will be the signal of the end of transfer.
 562                  * Since packets can't cross TDs this means that
 563                  * each TD except the last one must cover an exact multiple
 564                  * of the maximal packet length.
 565                  */
 566                 if (OHCI_PAGE_OFFSET(dataphys) + len <= (2 * OHCI_PAGE_SIZE)) {
 567                         /* We can handle all that remains in this TD */
 568                         curlen = len;
 569                 } else {
 570                         /* must use multiple TDs, fill as much as possible. */
 571                         curlen = 2 * OHCI_PAGE_SIZE -
 572                                  OHCI_PAGE_OFFSET(dataphys);
 573                         /* the length must be a multiple of the max size */
 574                         curlen -= curlen %
 575                             UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize);
 576                         KASSERT((curlen != 0), ("ohci_alloc_std: curlen == 0"));
 577                 }
 578                 DPRINTFN(4,("ohci_alloc_std_chain: dataphys=0x%08x "
 579                             "len=%d curlen=%d\n",
 580                             dataphys, len, curlen));
 581                 len -= curlen;
 582
 583                 cur->td.td_flags = tdflags;
 584                 cur->td.td_cbp = htole32(dataphys);
 585                 cur->nexttd = next;
 586                 cur->td.td_nexttd = htole32(next->physaddr);
 587                 cur->td.td_be = htole32(DMAADDR(dma, offset + curlen - 1));
 588                 cur->len = curlen;
 589                 cur->flags = OHCI_ADD_LEN;
 590                 cur->xfer = xfer;
 591                 DPRINTFN(10,("ohci_alloc_std_chain: cbp=0x%08x be=0x%08x\n",
 592                             dataphys, dataphys + curlen - 1));
 593                 if (len == 0)
 594                         break;
 595                 if (len < 0)
 596                         panic("Length went negative: %d curlen %d dma %p offset %08x", len, curlen, dma, (int)0);
 597
 598                 DPRINTFN(10,("ohci_alloc_std_chain: extend chain\n"));
 599                 offset += curlen;
 600                 cur = next;
 601         }
 602         if ((flags & USBD_FORCE_SHORT_XFER) &&
 603             alen % UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize) == 0) {
 604                 /* Force a 0 length transfer at the end. */
 605
 606                 cur = next;
 607
 608                 next = ohci_alloc_std(sc);
 609                 if (next == NULL)
 610                         goto nomem;
 611
 612                 cur->td.td_flags = tdflags;
 613                 cur->td.td_cbp = 0; /* indicate 0 length packet */
 614                 cur->nexttd = next;
 615                 cur->td.td_nexttd = htole32(next->physaddr);
 616                 cur->td.td_be = ~0;
 617                 cur->len = 0;
 618                 cur->flags = 0;
 619                 cur->xfer = xfer;
 620                 DPRINTFN(2,("ohci_alloc_std_chain: add 0 xfer\n"));
 621         }
 622         *ep = cur;
 623
 624         return (USBD_NORMAL_COMPLETION);
 625
 626  nomem:
 627         /* XXX free chain */
 628         return (USBD_NOMEM);
 629 }
 630
 631 #if 0
 632 Static void
 633 ohci_free_std_chain(ohci_softc_t *sc, ohci_soft_td_t *std,
 634                     ohci_soft_td_t *stdend)
 635 {
 636         ohci_soft_td_t *p;
 637
 638         for (; std != stdend; std = p) {
 639                 p = std->nexttd;
 640                 ohci_free_std(sc, std);
 641         }
 642 }
 643 #endif
 644
 645 ohci_soft_itd_t *
 646 ohci_alloc_sitd(ohci_softc_t *sc)
 647 {
 648         ohci_soft_itd_t *sitd;
 649         usbd_status err;
 650         int i, s, offs;
 651         usb_dma_t dma;
 652
 653         if (sc->sc_freeitds == NULL) {
 654                 DPRINTFN(2, ("ohci_alloc_sitd: allocating chunk\n"));
 655                 err = usb_allocmem(&sc->sc_bus, OHCI_SITD_SIZE * OHCI_SITD_CHUNK,
 656                           OHCI_ITD_ALIGN, &dma);
 657                 if (err)
 658                         return (NULL);
 659                 s = splusb();
 660                 for(i = 0; i < OHCI_SITD_CHUNK; i++) {
 661                         offs = i * OHCI_SITD_SIZE;
 662                         sitd = KERNADDR(&dma, offs);
 663                         sitd->physaddr = DMAADDR(&dma, offs);
 664                         sitd->nextitd = sc->sc_freeitds;
 665                         sc->sc_freeitds = sitd;
 666                 }
 667                 splx(s);
 668         }
 669
 670         s = splusb();
 671         sitd = sc->sc_freeitds;
 672         sc->sc_freeitds = sitd->nextitd;
 673         memset(&sitd->itd, 0, sizeof(ohci_itd_t));
 674         sitd->nextitd = NULL;
 675         sitd->xfer = NULL;
 676         ohci_hash_add_itd(sc, sitd);
 677         splx(s);
 678
 679 #ifdef DIAGNOSTIC
 680         sitd->isdone = 0;
 681 #endif
 682
 683         return (sitd);
 684 }
 685
 686 void
 687 ohci_free_sitd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
 688 {
 689         int s;
 690
 691         DPRINTFN(10,("ohci_free_sitd: sitd=%p\n", sitd));
 692
 693 #ifdef DIAGNOSTIC
 694         if (!sitd->isdone) {
 695                 panic("ohci_free_sitd: sitd=%p not done", sitd);
 696                 return;
 697         }
 698         /* Warn double free */
 699         sitd->isdone = 0;
 700 #endif
 701
 702         s = splusb();
 703         ohci_hash_rem_itd(sc, sitd);
 704         sitd->nextitd = sc->sc_freeitds;
 705         sc->sc_freeitds = sitd;
 706         splx(s);
 707 }
 708
 709 usbd_status
 710 ohci_init(ohci_softc_t *sc)
 711 {
 712         ohci_soft_ed_t *sed, *psed;
 713         usbd_status err;
 714         int i;
 715         u_int32_t rev;
 716
 717         DPRINTF(("ohci_init: start\n"));
 718 #if defined(__OpenBSD__)
 719         printf(",");
 720 #else
 721         printf("%s:", USBDEVNAME(sc->sc_bus.bdev));
 722 #endif
 723         rev = OREAD4(sc, OHCI_REVISION);
 724         printf(" OHCI version %d.%d%s\n", OHCI_REV_HI(rev), OHCI_REV_LO(rev),
 725                OHCI_REV_LEGACY(rev) ? ", legacy support" : "");
 726
 727         if (OHCI_REV_HI(rev) != 1 || OHCI_REV_LO(rev) != 0) {
 728                 printf("%s: unsupported OHCI revision\n",
 729                        USBDEVNAME(sc->sc_bus.bdev));
 730                 sc->sc_bus.usbrev = USBREV_UNKNOWN;
 731                 return (USBD_INVAL);
 732         }
 733         sc->sc_bus.usbrev = USBREV_1_0;
 734
 735         for (i = 0; i < OHCI_HASH_SIZE; i++)
 736                 LIST_INIT(&sc->sc_hash_tds[i]);
 737         for (i = 0; i < OHCI_HASH_SIZE; i++)
 738                 LIST_INIT(&sc->sc_hash_itds[i]);
 739
 740         SIMPLEQ_INIT(&sc->sc_free_xfers);
 741
 742         /* XXX determine alignment by R/W */
 743         /* Allocate the HCCA area. */
 744         err = usb_allocmem(&sc->sc_bus, OHCI_HCCA_SIZE,
 745                          OHCI_HCCA_ALIGN, &sc->sc_hccadma);
 746         if (err)
 747                 return (err);
 748         sc->sc_hcca = KERNADDR(&sc->sc_hccadma, 0);
 749         memset(sc->sc_hcca, 0, OHCI_HCCA_SIZE);
 750
 751         sc->sc_eintrs = OHCI_NORMAL_INTRS;
 752
 753         /* Allocate dummy ED that starts the control list. */
 754         sc->sc_ctrl_head = ohci_alloc_sed(sc);
 755         if (sc->sc_ctrl_head == NULL) {
 756                 err = USBD_NOMEM;
 757                 goto bad1;
 758         }
 759         sc->sc_ctrl_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
 760
 761         /* Allocate dummy ED that starts the bulk list. */
 762         sc->sc_bulk_head = ohci_alloc_sed(sc);
 763         if (sc->sc_bulk_head == NULL) {
 764                 err = USBD_NOMEM;
 765                 goto bad2;
 766         }
 767         sc->sc_bulk_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
 768
 769         /* Allocate dummy ED that starts the isochronous list. */
 770         sc->sc_isoc_head = ohci_alloc_sed(sc);
 771         if (sc->sc_isoc_head == NULL) {
 772                 err = USBD_NOMEM;
 773                 goto bad3;
 774         }
 775         sc->sc_isoc_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
 776
 777         /* Allocate all the dummy EDs that make up the interrupt tree. */
 778         for (i = 0; i < OHCI_NO_EDS; i++) {
 779                 sed = ohci_alloc_sed(sc);
 780                 if (sed == NULL) {
 781                         while (--i >= 0)
 782                                 ohci_free_sed(sc, sc->sc_eds[i]);
 783                         err = USBD_NOMEM;
 784                         goto bad4;
 785                 }
 786                 /* All ED fields are set to 0. */
 787                 sc->sc_eds[i] = sed;
 788                 sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
 789                 if (i != 0)
 790                         psed = sc->sc_eds[(i-1) / 2];
 791                 else
 792                         psed= sc->sc_isoc_head;
 793                 sed->next = psed;
 794                 sed->ed.ed_nexted = htole32(psed->physaddr);
 795         }
 796         /*
 797          * Fill HCCA interrupt table.  The bit reversal is to get
 798          * the tree set up properly to spread the interrupts.
 799          */
 800         for (i = 0; i < OHCI_NO_INTRS; i++)
 801                 sc->sc_hcca->hcca_interrupt_table[revbits[i]] =
 802                     htole32(sc->sc_eds[OHCI_NO_EDS-OHCI_NO_INTRS+i]->physaddr);
 803
 804 #ifdef USB_DEBUG
 805         if (ohcidebug > 15) {
 806                 for (i = 0; i < OHCI_NO_EDS; i++) {
 807                         printf("ed#%d ", i);
 808                         ohci_dump_ed(sc->sc_eds[i]);
 809                 }
 810                 printf("iso ");
 811                 ohci_dump_ed(sc->sc_isoc_head);
 812         }
 813 #endif
 814
 815         err = ohci_controller_init(sc);
 816         if (err != USBD_NORMAL_COMPLETION)
 817                 goto bad5;
 818
 819         /* Set up the bus struct. */
 820         sc->sc_bus.methods = &ohci_bus_methods;
 821         sc->sc_bus.pipe_size = sizeof(struct ohci_pipe);
 822
 823 #if defined(__NetBSD__) || defined(__OpenBSD__)
 824         sc->sc_control = sc->sc_intre = 0;
 825         sc->sc_powerhook = powerhook_establish(ohci_power, sc);
 826         sc->sc_shutdownhook = shutdownhook_establish(ohci_shutdown, sc);
 827 #endif
 828
 829         usb_callout_init(sc->sc_tmo_rhsc);
 830
 831         return (USBD_NORMAL_COMPLETION);
 832
 833  bad5:
 834         for (i = 0; i < OHCI_NO_EDS; i++)
 835                 ohci_free_sed(sc, sc->sc_eds[i]);
 836  bad4:
 837         ohci_free_sed(sc, sc->sc_isoc_head);
 838  bad3:
 839         ohci_free_sed(sc, sc->sc_bulk_head);
 840  bad2:
 841         ohci_free_sed(sc, sc->sc_ctrl_head);
 842  bad1:
 843         usb_freemem(&sc->sc_bus, &sc->sc_hccadma);
 844         return (err);
 845 }
 846
 847 Static usbd_status
 848 ohci_controller_init(ohci_softc_t *sc)
 849 {
 850         int i;
 851         u_int32_t s, ctl, ival, hcr, fm, per, desca;
 852
 853         /* Determine in what context we are running. */
 854         ctl = OREAD4(sc, OHCI_CONTROL);
 855         if (ctl & OHCI_IR) {
 856                 /* SMM active, request change */
 857                 DPRINTF(("ohci_init: SMM active, request owner change\n"));
 858                 s = OREAD4(sc, OHCI_COMMAND_STATUS);
 859                 OWRITE4(sc, OHCI_COMMAND_STATUS, s | OHCI_OCR);
 860                 for (i = 0; i < 100 && (ctl & OHCI_IR); i++) {
 861                         usb_delay_ms(&sc->sc_bus, 1);
 862                         ctl = OREAD4(sc, OHCI_CONTROL);
 863                 }
 864                 if ((ctl & OHCI_IR) == 0) {
 865                         printf("%s: SMM does not respond, resetting\n",
 866                                USBDEVNAME(sc->sc_bus.bdev));
 867                         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
 868                         goto reset;
 869                 }
 870 #if 0
 871 /* Don't bother trying to reuse the BIOS init, we'll reset it anyway. */
 872         } else if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_RESET) {
 873                 /* BIOS started controller. */
 874                 DPRINTF(("ohci_init: BIOS active\n"));
 875                 if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_OPERATIONAL) {
 876                         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_OPERATIONAL);
 877                         usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
 878                 }
 879 #endif
 880         } else {
 881                 DPRINTF(("ohci_init: cold started\n"));
 882         reset:
 883                 /* Controller was cold started. */
 884                 usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY);
 885         }
 886
 887         /*
 888          * This reset should not be necessary according to the OHCI spec, but
 889          * without it some controllers do not start.
 890          */
 891         DPRINTF(("%s: resetting\n", USBDEVNAME(sc->sc_bus.bdev)));
 892         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
 893         usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY);
 894
 895         /* We now own the host controller and the bus has been reset. */
 896         ival = OHCI_GET_IVAL(OREAD4(sc, OHCI_FM_INTERVAL));
 897
 898         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_HCR); /* Reset HC */
 899         /* Nominal time for a reset is 10 us. */
 900         for (i = 0; i < 10; i++) {
 901                 delay(10);
 902                 hcr = OREAD4(sc, OHCI_COMMAND_STATUS) & OHCI_HCR;
 903                 if (!hcr)
 904                         break;
 905         }
 906         if (hcr) {
 907                 printf("%s: reset timeout\n", USBDEVNAME(sc->sc_bus.bdev));
 908                 return (USBD_IOERROR);
 909         }
 910 #ifdef USB_DEBUG
 911         if (ohcidebug > 15)
 912                 ohci_dumpregs(sc);
 913 #endif
 914
 915         /* The controller is now in SUSPEND state, we have 2ms to finish. */
 916
 917         /* Set up HC registers. */
 918         OWRITE4(sc, OHCI_HCCA, DMAADDR(&sc->sc_hccadma, 0));
 919         OWRITE4(sc, OHCI_CONTROL_HEAD_ED, sc->sc_ctrl_head->physaddr);
 920         OWRITE4(sc, OHCI_BULK_HEAD_ED, sc->sc_bulk_head->physaddr);
 921         /* disable all interrupts and then switch on all desired interrupts */
 922         OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
 923         OWRITE4(sc, OHCI_INTERRUPT_ENABLE, sc->sc_eintrs | OHCI_MIE);
 924         /* switch on desired functional features */
 925         ctl = OREAD4(sc, OHCI_CONTROL);
 926         ctl &= ~(OHCI_CBSR_MASK | OHCI_LES | OHCI_HCFS_MASK | OHCI_IR);
 927         ctl |= OHCI_PLE | OHCI_IE | OHCI_CLE | OHCI_BLE |
 928                 OHCI_RATIO_1_4 | OHCI_HCFS_OPERATIONAL;
 929         /* And finally start it! */
 930         OWRITE4(sc, OHCI_CONTROL, ctl);
 931
 932         /*
 933          * The controller is now OPERATIONAL.  Set a some final
 934          * registers that should be set earlier, but that the
 935          * controller ignores when in the SUSPEND state.
 936          */
 937         fm = (OREAD4(sc, OHCI_FM_INTERVAL) & OHCI_FIT) ^ OHCI_FIT;
 938         fm |= OHCI_FSMPS(ival) | ival;
 939         OWRITE4(sc, OHCI_FM_INTERVAL, fm);
 940         per = OHCI_PERIODIC(ival); /* 90% periodic */
 941         OWRITE4(sc, OHCI_PERIODIC_START, per);
 942
 943         /* Fiddle the No OverCurrent Protection bit to avoid chip bug. */
 944         desca = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
 945         OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca | OHCI_NOCP);
 946         OWRITE4(sc, OHCI_RH_STATUS, OHCI_LPSC); /* Enable port power */
 947         usb_delay_ms(&sc->sc_bus, OHCI_ENABLE_POWER_DELAY);
 948         OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca);
 949
 950         /*
 951          * The AMD756 requires a delay before re-reading the register,
 952          * otherwise it will occasionally report 0 ports.
 953          */
 954         sc->sc_noport = 0;
 955         for (i = 0; i < 10 && sc->sc_noport == 0; i++) {
 956                 usb_delay_ms(&sc->sc_bus, OHCI_READ_DESC_DELAY);
 957                 sc->sc_noport = OHCI_GET_NDP(OREAD4(sc, OHCI_RH_DESCRIPTOR_A));
 958         }
 959
 960 #ifdef USB_DEBUG
 961         if (ohcidebug > 5)
 962                 ohci_dumpregs(sc);
 963 #endif
 964         return (USBD_NORMAL_COMPLETION);
 965 }
 966
 967 usbd_status
 968 ohci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
 969 {
 970         return (usb_allocmem(bus, size, 0, dma));
 971 }
 972
 973 void
 974 ohci_freem(struct usbd_bus *bus, usb_dma_t *dma)
 975 {
 976         usb_freemem(bus, dma);
 977 }
 978
 979 usbd_xfer_handle
 980 ohci_allocx(struct usbd_bus *bus)
 981 {
 982         struct ohci_softc *sc = (struct ohci_softc *)bus;
 983         usbd_xfer_handle xfer;
 984
 985         xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers);
 986         if (xfer != NULL) {
 987                 SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
 988 #ifdef DIAGNOSTIC
 989                 if (xfer->busy_free != XFER_FREE) {
 990                         printf("ohci_allocx: xfer=%p not free, 0x%08x\n", xfer,
 991                                xfer->busy_free);
 992                 }
 993 #endif
 994         } else {
 995                 xfer = malloc(sizeof(struct ohci_xfer), M_USB, M_NOWAIT);
 996         }
 997         if (xfer != NULL) {
 998                 memset(xfer, 0, sizeof (struct ohci_xfer));
 999                 usb_init_task(&OXFER(xfer)->abort_task, ohci_timeout_task,
1000                     xfer);
1001                 OXFER(xfer)->ohci_xfer_flags = 0;
1002 #ifdef DIAGNOSTIC
1003                 xfer->busy_free = XFER_BUSY;
1004 #endif
1005         }
1006         return (xfer);
1007 }
1008
1009 void
1010 ohci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
1011 {
1012         struct ohci_softc *sc = (struct ohci_softc *)bus;
1013         struct ohci_xfer *oxfer = (struct ohci_xfer *)xfer;
1014         ohci_soft_itd_t *sitd;
1015
1016         if (oxfer->ohci_xfer_flags & OHCI_ISOC_DIRTY) {
1017                 for (sitd = xfer->hcpriv; sitd != NULL && sitd->xfer == xfer;
1018                     sitd = sitd->nextitd)
1019                         ohci_free_sitd(sc, sitd);
1020         }
1021
1022 #ifdef DIAGNOSTIC
1023         if (xfer->busy_free != XFER_BUSY) {
1024                 printf("ohci_freex: xfer=%p not busy, 0x%08x\n", xfer,
1025                        xfer->busy_free);
1026                 return;
1027         }
1028         xfer->busy_free = XFER_FREE;
1029 #endif
1030         SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
1031 }
1032
1033 /*
1034  * Shut down the controller when the system is going down.
1035  */
1036 void
1037 ohci_shutdown(void *v)
1038 {
1039         ohci_softc_t *sc = v;
1040
1041         DPRINTF(("ohci_shutdown: stopping the HC\n"));
1042         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
1043 }
1044
1045 /*
1046  * Handle suspend/resume.
1047  *
1048  * We need to switch to polling mode here, because this routine is
1049  * called from an intterupt context.  This is all right since we
1050  * are almost suspended anyway.
1051  */
1052 void
1053 ohci_power(int why, void *v)
1054 {
1055         ohci_softc_t *sc = v;
1056         u_int32_t ctl;
1057         int s;
1058
1059 #ifdef USB_DEBUG
1060         DPRINTF(("ohci_power: sc=%p, why=%d\n", sc, why));
1061         ohci_dumpregs(sc);
1062 #endif
1063
1064         s = splhardusb();
1065         if (why != PWR_RESUME) {
1066                 sc->sc_bus.use_polling++;
1067                 ctl = OREAD4(sc, OHCI_CONTROL) & ~OHCI_HCFS_MASK;
1068                 if (sc->sc_control == 0) {
1069                         /*
1070                          * Preserve register values, in case that APM BIOS
1071                          * does not recover them.
1072                          */
1073                         sc->sc_control = ctl;
1074                         sc->sc_intre = OREAD4(sc, OHCI_INTERRUPT_ENABLE);
1075                 }
1076                 ctl |= OHCI_HCFS_SUSPEND;
1077                 OWRITE4(sc, OHCI_CONTROL, ctl);
1078                 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
1079                 sc->sc_bus.use_polling--;
1080         } else {
1081                 sc->sc_bus.use_polling++;
1082
1083                 /* Some broken BIOSes never initialize Controller chip */
1084                 ohci_controller_init(sc);
1085
1086                 if (sc->sc_intre)
1087                         OWRITE4(sc, OHCI_INTERRUPT_ENABLE,
1088                                 sc->sc_intre & (OHCI_ALL_INTRS | OHCI_MIE));
1089                 if (sc->sc_control)
1090                         ctl = sc->sc_control;
1091                 else
1092                         ctl = OREAD4(sc, OHCI_CONTROL);
1093                 ctl |= OHCI_HCFS_RESUME;
1094                 OWRITE4(sc, OHCI_CONTROL, ctl);
1095                 usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
1096                 ctl = (ctl & ~OHCI_HCFS_MASK) | OHCI_HCFS_OPERATIONAL;
1097                 OWRITE4(sc, OHCI_CONTROL, ctl);
1098                 usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
1099                 sc->sc_control = sc->sc_intre = 0;
1100                 sc->sc_bus.use_polling--;
1101         }
1102         splx(s);
1103 }
1104
1105 #ifdef USB_DEBUG
1106 void
1107 ohci_dumpregs(ohci_softc_t *sc)
1108 {
1109         DPRINTF(("ohci_dumpregs: rev=0x%08x control=0x%08x command=0x%08x\n",
1110                  OREAD4(sc, OHCI_REVISION),
1111                  OREAD4(sc, OHCI_CONTROL),
1112                  OREAD4(sc, OHCI_COMMAND_STATUS)));
1113         DPRINTF(("               intrstat=0x%08x intre=0x%08x intrd=0x%08x\n",
1114                  OREAD4(sc, OHCI_INTERRUPT_STATUS),
1115                  OREAD4(sc, OHCI_INTERRUPT_ENABLE),
1116                  OREAD4(sc, OHCI_INTERRUPT_DISABLE)));
1117         DPRINTF(("               hcca=0x%08x percur=0x%08x ctrlhd=0x%08x\n",
1118                  OREAD4(sc, OHCI_HCCA),
1119                  OREAD4(sc, OHCI_PERIOD_CURRENT_ED),
1120                  OREAD4(sc, OHCI_CONTROL_HEAD_ED)));
1121         DPRINTF(("               ctrlcur=0x%08x bulkhd=0x%08x bulkcur=0x%08x\n",
1122                  OREAD4(sc, OHCI_CONTROL_CURRENT_ED),
1123                  OREAD4(sc, OHCI_BULK_HEAD_ED),
1124                  OREAD4(sc, OHCI_BULK_CURRENT_ED)));
1125         DPRINTF(("               done=0x%08x fmival=0x%08x fmrem=0x%08x\n",
1126                  OREAD4(sc, OHCI_DONE_HEAD),
1127                  OREAD4(sc, OHCI_FM_INTERVAL),
1128                  OREAD4(sc, OHCI_FM_REMAINING)));
1129         DPRINTF(("               fmnum=0x%08x perst=0x%08x lsthrs=0x%08x\n",
1130                  OREAD4(sc, OHCI_FM_NUMBER),
1131                  OREAD4(sc, OHCI_PERIODIC_START),
1132                  OREAD4(sc, OHCI_LS_THRESHOLD)));
1133         DPRINTF(("               desca=0x%08x descb=0x%08x stat=0x%08x\n",
1134                  OREAD4(sc, OHCI_RH_DESCRIPTOR_A),
1135                  OREAD4(sc, OHCI_RH_DESCRIPTOR_B),
1136                  OREAD4(sc, OHCI_RH_STATUS)));
1137         DPRINTF(("               port1=0x%08x port2=0x%08x\n",
1138                  OREAD4(sc, OHCI_RH_PORT_STATUS(1)),
1139                  OREAD4(sc, OHCI_RH_PORT_STATUS(2))));
1140         DPRINTF(("         HCCA: frame_number=0x%04x done_head=0x%08x\n",
1141                  le32toh(sc->sc_hcca->hcca_frame_number),
1142                  le32toh(sc->sc_hcca->hcca_done_head)));
1143 }
1144 #endif
1145
1146 Static int ohci_intr1(ohci_softc_t *);
1147
1148 int
1149 ohci_intr(void *p)
1150 {
1151         ohci_softc_t *sc = p;
1152
1153         if (sc == NULL || sc->sc_dying)
1154                 return (0);
1155
1156         /* If we get an interrupt while polling, then just ignore it. */
1157         if (sc->sc_bus.use_polling) {
1158 #ifdef DIAGNOSTIC
1159                 printf("ohci_intr: ignored interrupt while polling\n");
1160 #endif
1161                 return (0);
1162         }
1163
1164         return (ohci_intr1(sc));
1165 }
1166
1167 Static int
1168 ohci_intr1(ohci_softc_t *sc)
1169 {
1170         u_int32_t intrs, eintrs;
1171         ohci_physaddr_t done;
1172
1173         DPRINTFN(14,("ohci_intr1: enter\n"));
1174
1175         /* In case the interrupt occurs before initialization has completed. */
1176         if (sc == NULL || sc->sc_hcca == NULL) {
1177 #ifdef DIAGNOSTIC
1178                 printf("ohci_intr: sc->sc_hcca == NULL\n");
1179 #endif
1180                 return (0);
1181         }
1182
1183         intrs = 0;
1184         done = le32toh(sc->sc_hcca->hcca_done_head);
1185
1186         /* The LSb of done is used to inform the HC Driver that an interrupt
1187          * condition exists for both the Done list and for another event
1188          * recorded in HcInterruptStatus. On an interrupt from the HC, the HC
1189          * Driver checks the HccaDoneHead Value. If this value is 0, then the
1190          * interrupt was caused by other than the HccaDoneHead update and the
1191          * HcInterruptStatus register needs to be accessed to determine that
1192          * exact interrupt cause. If HccaDoneHead is nonzero, then a Done list
1193          * update interrupt is indicated and if the LSb of done is nonzero,
1194          * then an additional interrupt event is indicated and
1195          * HcInterruptStatus should be checked to determine its cause.
1196          */
1197         if (done != 0) {
1198                 if (done & ~OHCI_DONE_INTRS)
1199                         intrs = OHCI_WDH;
1200                 if (done & OHCI_DONE_INTRS) {
1201                         intrs |= OREAD4(sc, OHCI_INTERRUPT_STATUS);
1202                         done &= ~OHCI_DONE_INTRS;
1203                 }
1204                 sc->sc_hcca->hcca_done_head = 0;
1205         } else
1206                 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS) & ~OHCI_WDH;
1207
1208         if (intrs == 0)         /* nothing to be done (PCI shared interrupt) */
1209                 return (0);
1210
1211         intrs &= ~OHCI_MIE;
1212         OWRITE4(sc, OHCI_INTERRUPT_STATUS, intrs); /* Acknowledge */
1213         eintrs = intrs & sc->sc_eintrs;
1214         if (!eintrs)
1215                 return (0);
1216
1217         sc->sc_bus.intr_context++;
1218         sc->sc_bus.no_intrs++;
1219         DPRINTFN(7, ("ohci_intr: sc=%p intrs=0x%x(0x%x) eintrs=0x%x\n",
1220                      sc, (u_int)intrs, OREAD4(sc, OHCI_INTERRUPT_STATUS),
1221                      (u_int)eintrs));
1222
1223         if (eintrs & OHCI_SO) {
1224                 sc->sc_overrun_cnt++;
1225                 if (usbd_ratecheck(&sc->sc_overrun_ntc)) {
1226                         printf("%s: %u scheduling overruns\n",
1227                             USBDEVNAME(sc->sc_bus.bdev), sc->sc_overrun_cnt);
1228                         sc->sc_overrun_cnt = 0;
1229                 }
1230                 /* XXX do what */
1231                 eintrs &= ~OHCI_SO;
1232         }
1233         if (eintrs & OHCI_WDH) {
1234                 ohci_add_done(sc, done &~ OHCI_DONE_INTRS);
1235                 usb_schedsoftintr(&sc->sc_bus);
1236                 eintrs &= ~OHCI_WDH;
1237         }
1238         if (eintrs & OHCI_RD) {
1239                 printf("%s: resume detect\n", USBDEVNAME(sc->sc_bus.bdev));
1240                 /* XXX process resume detect */
1241         }
1242         if (eintrs & OHCI_UE) {
1243                 printf("%s: unrecoverable error, controller halted\n",
1244                        USBDEVNAME(sc->sc_bus.bdev));
1245                 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
1246                 /* XXX what else */
1247         }
1248         if (eintrs & OHCI_RHSC) {
1249                 ohci_rhsc(sc, sc->sc_intrxfer);
1250                 /*
1251                  * Disable RHSC interrupt for now, because it will be
1252                  * on until the port has been reset.
1253                  */
1254                 ohci_rhsc_able(sc, 0);
1255                 /* Do not allow RHSC interrupts > 1 per second */
1256                 usb_callout(sc->sc_tmo_rhsc, hz, ohci_rhsc_enable, sc);
1257                 eintrs &= ~OHCI_RHSC;
1258         }
1259
1260         sc->sc_bus.intr_context--;
1261
1262         if (eintrs != 0) {
1263                 /* Block unprocessed interrupts. XXX */
1264                 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, eintrs);
1265                 sc->sc_eintrs &= ~eintrs;
1266                 printf("%s: blocking intrs 0x%x\n",
1267                        USBDEVNAME(sc->sc_bus.bdev), eintrs);
1268         }
1269
1270         return (1);
1271 }
1272
1273 void
1274 ohci_rhsc_able(ohci_softc_t *sc, int on)
1275 {
1276         DPRINTFN(4, ("ohci_rhsc_able: on=%d\n", on));
1277         if (on) {
1278                 sc->sc_eintrs |= OHCI_RHSC;
1279                 OWRITE4(sc, OHCI_INTERRUPT_ENABLE, OHCI_RHSC);
1280         } else {
1281                 sc->sc_eintrs &= ~OHCI_RHSC;
1282                 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_RHSC);
1283         }
1284 }
1285
1286 void
1287 ohci_rhsc_enable(void *v_sc)
1288 {
1289         ohci_softc_t *sc = v_sc;
1290         int s;
1291
1292         s = splhardusb();
1293         ohci_rhsc_able(sc, 1);
1294         splx(s);
1295 }
1296
1297 #ifdef USB_DEBUG
1298 char *ohci_cc_strs[] = {
1299         "NO_ERROR",
1300         "CRC",
1301         "BIT_STUFFING",
1302         "DATA_TOGGLE_MISMATCH",
1303         "STALL",
1304         "DEVICE_NOT_RESPONDING",
1305         "PID_CHECK_FAILURE",
1306         "UNEXPECTED_PID",
1307         "DATA_OVERRUN",
1308         "DATA_UNDERRUN",
1309         "BUFFER_OVERRUN",
1310         "BUFFER_UNDERRUN",
1311         "reserved",
1312         "reserved",
1313         "NOT_ACCESSED",
1314         "NOT_ACCESSED"
1315 };
1316 #endif
1317
1318 void
1319 ohci_add_done(ohci_softc_t *sc, ohci_physaddr_t done)
1320 {
1321         ohci_soft_itd_t *sitd, *sidone, **ip;
1322         ohci_soft_td_t  *std,  *sdone,  **p;
1323
1324         /* Reverse the done list. */
1325         for (sdone = NULL, sidone = NULL; done != 0; ) {
1326                 std = ohci_hash_find_td(sc, done);
1327                 if (std != NULL) {
1328                         std->dnext = sdone;
1329                         done = le32toh(std->td.td_nexttd);
1330                         sdone = std;
1331                         DPRINTFN(10,("add TD %p\n", std));
1332                         continue;
1333                 }
1334                 sitd = ohci_hash_find_itd(sc, done);
1335                 if (sitd != NULL) {
1336                         sitd->dnext = sidone;
1337                         done = le32toh(sitd->itd.itd_nextitd);
1338                         sidone = sitd;
1339                         DPRINTFN(5,("add ITD %p\n", sitd));
1340                         continue;
1341                 }
1342                 panic("ohci_add_done: addr 0x%08lx not found", (u_long)done);
1343         }
1344
1345         /* sdone & sidone now hold the done lists. */
1346         /* Put them on the already processed lists. */
1347         for (p = &sc->sc_sdone; *p != NULL; p = &(*p)->dnext)
1348                 ;
1349         *p = sdone;
1350         for (ip = &sc->sc_sidone; *ip != NULL; ip = &(*ip)->dnext)
1351                 ;
1352         *ip = sidone;
1353 }
1354
1355 void
1356 ohci_softintr(void *v)
1357 {
1358         ohci_softc_t *sc = v;
1359         ohci_soft_itd_t *sitd, *sidone, *sitdnext;
1360         ohci_soft_td_t  *std,  *sdone,  *stdnext, *p, *n;
1361         usbd_xfer_handle xfer;
1362         struct ohci_pipe *opipe;
1363         int len, cc, s;
1364         int i, j, iframes;
1365
1366         DPRINTFN(10,("ohci_softintr: enter\n"));
1367
1368         sc->sc_bus.intr_context++;
1369
1370         s = splhardusb();
1371         sdone = sc->sc_sdone;
1372         sc->sc_sdone = NULL;
1373         sidone = sc->sc_sidone;
1374         sc->sc_sidone = NULL;
1375         splx(s);
1376
1377         DPRINTFN(10,("ohci_softintr: sdone=%p sidone=%p\n", sdone, sidone));
1378
1379 #ifdef USB_DEBUG
1380         if (ohcidebug > 10) {
1381                 DPRINTF(("ohci_process_done: TD done:\n"));
1382                 ohci_dump_tds(sdone);
1383         }
1384 #endif
1385
1386         for (std = sdone; std; std = stdnext) {
1387                 xfer = std->xfer;
1388                 stdnext = std->dnext;
1389                 DPRINTFN(10, ("ohci_process_done: std=%p xfer=%p hcpriv=%p\n",
1390                                 std, xfer, (xfer ? xfer->hcpriv : NULL)));
1391                 if (xfer == NULL) {
1392                         /*
1393                          * xfer == NULL: There seems to be no xfer associated
1394                          * with this TD. It is tailp that happened to end up on
1395                          * the done queue.
1396                          */
1397                         continue;
1398                 }
1399                 if (xfer->status == USBD_CANCELLED ||
1400                     xfer->status == USBD_TIMEOUT) {
1401                         DPRINTF(("ohci_process_done: cancel/timeout %p\n",
1402                                  xfer));
1403                         /* Handled by abort routine. */
1404                         continue;
1405                 }
1406
1407                 len = std->len;
1408                 if (std->td.td_cbp != 0)
1409                         len -= le32toh(std->td.td_be) -
1410                                le32toh(std->td.td_cbp) + 1;
1411                 DPRINTFN(10, ("ohci_process_done: len=%d, flags=0x%x\n", len,
1412                     std->flags));
1413                 if (std->flags & OHCI_ADD_LEN)
1414                         xfer->actlen += len;
1415
1416                 cc = OHCI_TD_GET_CC(le32toh(std->td.td_flags));
1417                 if (cc != OHCI_CC_NO_ERROR) {
1418                         /*
1419                          * Endpoint is halted.  First unlink all the TDs
1420                          * belonging to the failed transfer, and then restart
1421                          * the endpoint.
1422                          */
1423                         opipe = (struct ohci_pipe *)xfer->pipe;
1424
1425                         DPRINTFN(15,("ohci_process_done: error cc=%d (%s)\n",
1426                           OHCI_TD_GET_CC(le32toh(std->td.td_flags)),
1427                           ohci_cc_strs[OHCI_TD_GET_CC(le32toh(std->td.td_flags))]));
1428                         usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
1429                         usb_rem_task(OXFER(xfer)->xfer.pipe->device,
1430                             &OXFER(xfer)->abort_task);
1431
1432                         /* Remove all this xfer's TDs from the done queue. */
1433                         for (p = std; p->dnext != NULL; p = p->dnext) {
1434                                 if (p->dnext->xfer != xfer)
1435                                         continue;
1436                                 p->dnext = p->dnext->dnext;
1437                         }
1438                         /* The next TD may have been removed. */
1439                         stdnext = std->dnext;
1440
1441                         /* Remove all TDs belonging to this xfer. */
1442                         for (p = xfer->hcpriv; p->xfer == xfer; p = n) {
1443                                 n = p->nexttd;
1444                                 ohci_free_std(sc, p);
1445                         }
1446
1447                         /* clear halt */
1448                         opipe->sed->ed.ed_headp = htole32(p->physaddr);
1449                         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
1450
1451                         if (cc == OHCI_CC_STALL)
1452                                 xfer->status = USBD_STALLED;
1453                         else
1454                                 xfer->status = USBD_IOERROR;
1455                         s = splusb();
1456                         usb_transfer_complete(xfer);
1457                         splx(s);
1458                         continue;
1459                 }
1460                 /*
1461                  * Skip intermediate TDs. They remain linked from
1462                  * xfer->hcpriv and we free them when the transfer completes.
1463                  */
1464                 if ((std->flags & OHCI_CALL_DONE) == 0)
1465                         continue;
1466
1467                 /* Normal transfer completion */
1468                 usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
1469                 usb_rem_task(OXFER(xfer)->xfer.pipe->device,
1470                     &OXFER(xfer)->abort_task);
1471                 for (p = xfer->hcpriv; p->xfer == xfer; p = n) {
1472                         n = p->nexttd;
1473                         ohci_free_std(sc, p);
1474                 }
1475                 xfer->status = USBD_NORMAL_COMPLETION;
1476                 s = splusb();
1477                 usb_transfer_complete(xfer);
1478                 splx(s);
1479         }
1480
1481 #ifdef USB_DEBUG
1482         if (ohcidebug > 10) {
1483                 DPRINTF(("ohci_softintr: ITD done:\n"));
1484                 ohci_dump_itds(sidone);
1485         }
1486 #endif
1487
1488         for (sitd = sidone; sitd != NULL; sitd = sitdnext) {
1489                 xfer = sitd->xfer;
1490                 sitdnext = sitd->dnext;
1491                 sitd->flags |= OHCI_ITD_INTFIN;
1492                 DPRINTFN(1, ("ohci_process_done: sitd=%p xfer=%p hcpriv=%p\n",
1493                              sitd, xfer, xfer ? xfer->hcpriv : 0));
1494                 if (xfer == NULL)
1495                         continue;
1496                 if (xfer->status == USBD_CANCELLED ||
1497                     xfer->status == USBD_TIMEOUT) {
1498                         DPRINTF(("ohci_process_done: cancel/timeout %p\n",
1499                                  xfer));
1500                         /* Handled by abort routine. */
1501                         continue;
1502                 }
1503                 if (xfer->pipe)
1504                         if (xfer->pipe->aborting)
1505                                 continue; /*Ignore.*/
1506 #ifdef DIAGNOSTIC
1507                 if (sitd->isdone)
1508                         printf("ohci_softintr: sitd=%p is done\n", sitd);
1509                 sitd->isdone = 1;
1510 #endif
1511                 opipe = (struct ohci_pipe *)xfer->pipe;
1512                 if (opipe->aborting)
1513                         continue;
1514
1515                 if (sitd->flags & OHCI_CALL_DONE) {
1516                         ohci_soft_itd_t *next;
1517
1518                         opipe->u.iso.inuse -= xfer->nframes;
1519                         xfer->status = USBD_NORMAL_COMPLETION;
1520                         for (i = 0, sitd = xfer->hcpriv;;sitd = next) {
1521                                 next = sitd->nextitd;
1522                                 if (OHCI_ITD_GET_CC(sitd->itd.itd_flags) != OHCI_CC_NO_ERROR)
1523                                         xfer->status = USBD_IOERROR;
1524
1525                                 if (xfer->status == USBD_NORMAL_COMPLETION) {
1526                                         iframes = OHCI_ITD_GET_FC(sitd->itd.itd_flags);
1527                                         for (j = 0; j < iframes; i++, j++) {
1528                                                 len = le16toh(sitd->itd.itd_offset[j]);
1529                                                 len =
1530                                                    (OHCI_ITD_PSW_GET_CC(len) ==
1531                                                     OHCI_CC_NOT_ACCESSED) ? 0 :
1532                                                     OHCI_ITD_PSW_LENGTH(len);
1533                                                 xfer->frlengths[i] = len;
1534                                         }
1535                                 }
1536                                 if (sitd->flags & OHCI_CALL_DONE)
1537                                         break;
1538                         }
1539
1540                         s = splusb();
1541                         usb_transfer_complete(xfer);
1542                         splx(s);
1543                 }
1544         }
1545
1546 #ifdef USB_USE_SOFTINTR
1547         if (sc->sc_softwake) {
1548                 sc->sc_softwake = 0;
1549                 wakeup(&sc->sc_softwake);
1550         }
1551 #endif /* USB_USE_SOFTINTR */
1552
1553         sc->sc_bus.intr_context--;
1554         DPRINTFN(10,("ohci_softintr: done:\n"));
1555 }
1556
1557 void
1558 ohci_device_ctrl_done(usbd_xfer_handle xfer)
1559 {
1560         DPRINTFN(10,("ohci_device_ctrl_done: xfer=%p\n", xfer));
1561
1562 #ifdef DIAGNOSTIC
1563         if (!(xfer->rqflags & URQ_REQUEST)) {
1564                 panic("ohci_device_ctrl_done: not a request");
1565         }
1566 #endif
1567         xfer->hcpriv = NULL;
1568 }
1569
1570 void
1571 ohci_device_intr_done(usbd_xfer_handle xfer)
1572 {
1573         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
1574         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
1575         ohci_soft_ed_t *sed = opipe->sed;
1576         ohci_soft_td_t *data, *tail;
1577
1578
1579         DPRINTFN(10,("ohci_device_intr_done: xfer=%p, actlen=%d\n",
1580                      xfer, xfer->actlen));
1581
1582         xfer->hcpriv = NULL;
1583
1584         if (xfer->pipe->repeat) {
1585                 data = opipe->tail.td;
1586                 tail = ohci_alloc_std(sc); /* XXX should reuse TD */
1587                 if (tail == NULL) {
1588                         xfer->status = USBD_NOMEM;
1589                         return;
1590                 }
1591                 tail->xfer = NULL;
1592
1593                 data->td.td_flags = htole32(
1594                         OHCI_TD_IN | OHCI_TD_NOCC |
1595                         OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY);
1596                 if (xfer->flags & USBD_SHORT_XFER_OK)
1597                         data->td.td_flags |= htole32(OHCI_TD_R);
1598                 data->td.td_cbp = htole32(DMAADDR(&xfer->dmabuf, 0));
1599                 data->nexttd = tail;
1600                 data->td.td_nexttd = htole32(tail->physaddr);
1601                 data->td.td_be = htole32(le32toh(data->td.td_cbp) +
1602                         xfer->length - 1);
1603                 data->len = xfer->length;
1604                 data->xfer = xfer;
1605                 data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN;
1606                 xfer->hcpriv = data;
1607                 xfer->actlen = 0;
1608
1609                 sed->ed.ed_tailp = htole32(tail->physaddr);
1610                 opipe->tail.td = tail;
1611         }
1612 }
1613
1614 void
1615 ohci_device_bulk_done(usbd_xfer_handle xfer)
1616 {
1617         DPRINTFN(10,("ohci_device_bulk_done: xfer=%p, actlen=%d\n",
1618                      xfer, xfer->actlen));
1619
1620         xfer->hcpriv = NULL;
1621 }
1622
1623 void
1624 ohci_rhsc(ohci_softc_t *sc, usbd_xfer_handle xfer)
1625 {
1626         usbd_pipe_handle pipe;
1627         u_char *p;
1628         int i, m;
1629         int hstatus;
1630
1631         hstatus = OREAD4(sc, OHCI_RH_STATUS);
1632         DPRINTF(("ohci_rhsc: sc=%p xfer=%p hstatus=0x%08x\n",
1633                  sc, xfer, hstatus));
1634
1635         if (xfer == NULL) {
1636                 /* Just ignore the change. */
1637                 return;
1638         }
1639
1640         pipe = xfer->pipe;
1641
1642         p = KERNADDR(&xfer->dmabuf, 0);
1643         m = min(sc->sc_noport, xfer->length * 8 - 1);
1644         memset(p, 0, xfer->length);
1645         for (i = 1; i <= m; i++) {
1646                 /* Pick out CHANGE bits from the status reg. */
1647                 if (OREAD4(sc, OHCI_RH_PORT_STATUS(i)) >> 16)
1648                         p[i/8] |= 1 << (i%8);
1649         }
1650         DPRINTF(("ohci_rhsc: change=0x%02x\n", *p));
1651         xfer->actlen = xfer->length;
1652         xfer->status = USBD_NORMAL_COMPLETION;
1653
1654         usb_transfer_complete(xfer);
1655 }
1656
1657 void
1658 ohci_root_intr_done(usbd_xfer_handle xfer)
1659 {
1660         xfer->hcpriv = NULL;
1661 }
1662
1663 void
1664 ohci_root_ctrl_done(usbd_xfer_handle xfer)
1665 {
1666         xfer->hcpriv = NULL;
1667 }
1668
1669 /*
1670  * Wait here until controller claims to have an interrupt.
1671  * Then call ohci_intr and return.  Use timeout to avoid waiting
1672  * too long.
1673  */
1674 void
1675 ohci_waitintr(ohci_softc_t *sc, usbd_xfer_handle xfer)
1676 {
1677         int timo = xfer->timeout;
1678         int usecs;
1679         u_int32_t intrs;
1680
1681         xfer->status = USBD_IN_PROGRESS;
1682         for (usecs = timo * 1000000 / hz; usecs > 0; usecs -= 1000) {
1683                 usb_delay_ms(&sc->sc_bus, 1);
1684                 if (sc->sc_dying)
1685                         break;
1686                 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs;
1687                 DPRINTFN(15,("ohci_waitintr: 0x%04x\n", intrs));
1688 #ifdef USB_DEBUG
1689                 if (ohcidebug > 15)
1690                         ohci_dumpregs(sc);
1691 #endif
1692                 if (intrs) {
1693                         ohci_intr1(sc);
1694                         if (xfer->status != USBD_IN_PROGRESS)
1695                                 return;
1696                 }
1697         }
1698
1699         /* Timeout */
1700         DPRINTF(("ohci_waitintr: timeout\n"));
1701         xfer->status = USBD_TIMEOUT;
1702         usb_transfer_complete(xfer);
1703         /* XXX should free TD */
1704 }
1705
1706 void
1707 ohci_poll(struct usbd_bus *bus)
1708 {
1709         ohci_softc_t *sc = (ohci_softc_t *)bus;
1710 #ifdef USB_DEBUG
1711         static int last;
1712         int new;
1713         new = OREAD4(sc, OHCI_INTERRUPT_STATUS);
1714         if (new != last) {
1715                 DPRINTFN(10,("ohci_poll: intrs=0x%04x\n", new));
1716                 last = new;
1717         }
1718 #endif
1719
1720         if (OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs)
1721                 ohci_intr1(sc);
1722 }
1723
1724 usbd_status
1725 ohci_device_request(usbd_xfer_handle xfer)
1726 {
1727         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
1728         usb_device_request_t *req = &xfer->request;
1729         usbd_device_handle dev = opipe->pipe.device;
1730         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
1731         int addr = dev->address;
1732         ohci_soft_td_t *setup, *stat, *next, *tail;
1733         ohci_soft_ed_t *sed;
1734         int isread;
1735         int len;
1736         usbd_status err;
1737         int s;
1738
1739         isread = req->bmRequestType & UT_READ;
1740         len = UGETW(req->wLength);
1741
1742         DPRINTFN(3,("ohci_device_control type=0x%02x, request=0x%02x, "
1743                     "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
1744                     req->bmRequestType, req->bRequest, UGETW(req->wValue),
1745                     UGETW(req->wIndex), len, addr,
1746                     opipe->pipe.endpoint->edesc->bEndpointAddress));
1747
1748         setup = opipe->tail.td;
1749         stat = ohci_alloc_std(sc);
1750         if (stat == NULL) {
1751                 err = USBD_NOMEM;
1752                 goto bad1;
1753         }
1754         tail = ohci_alloc_std(sc);
1755         if (tail == NULL) {
1756                 err = USBD_NOMEM;
1757                 goto bad2;
1758         }
1759         tail->xfer = NULL;
1760
1761         sed = opipe->sed;
1762         opipe->u.ctl.length = len;
1763
1764         /* Update device address and length since they may have changed
1765            during the setup of the control pipe in usbd_new_device(). */
1766         /* XXX This only needs to be done once, but it's too early in open. */
1767         /* XXXX Should not touch ED here! */
1768         sed->ed.ed_flags = htole32(
1769          (le32toh(sed->ed.ed_flags) & ~(OHCI_ED_ADDRMASK | OHCI_ED_MAXPMASK)) |
1770          OHCI_ED_SET_FA(addr) |
1771          OHCI_ED_SET_MAXP(UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize)));
1772
1773         next = stat;
1774
1775         /* Set up data transaction */
1776         if (len != 0) {
1777                 ohci_soft_td_t *std = stat;
1778
1779                 err = ohci_alloc_std_chain(opipe, sc, len, isread, xfer,
1780                           std, &stat);
1781                 stat = stat->nexttd; /* point at free TD */
1782                 if (err)
1783                         goto bad3;
1784                 /* Start toggle at 1 and then use the carried toggle. */
1785                 std->td.td_flags &= htole32(~OHCI_TD_TOGGLE_MASK);
1786                 std->td.td_flags |= htole32(OHCI_TD_TOGGLE_1);
1787         }
1788
1789         memcpy(KERNADDR(&opipe->u.ctl.reqdma, 0), req, sizeof *req);
1790
1791         setup->td.td_flags = htole32(OHCI_TD_SETUP | OHCI_TD_NOCC |
1792                                      OHCI_TD_TOGGLE_0 | OHCI_TD_SET_DI(6));
1793         setup->td.td_cbp = htole32(DMAADDR(&opipe->u.ctl.reqdma, 0));
1794         setup->nexttd = next;
1795         setup->td.td_nexttd = htole32(next->physaddr);
1796         setup->td.td_be = htole32(le32toh(setup->td.td_cbp) + sizeof *req - 1);
1797         setup->len = 0;
1798         setup->xfer = xfer;
1799         setup->flags = 0;
1800         xfer->hcpriv = setup;
1801
1802         stat->td.td_flags = htole32(
1803                 (isread ? OHCI_TD_OUT : OHCI_TD_IN) |
1804                 OHCI_TD_NOCC | OHCI_TD_TOGGLE_1 | OHCI_TD_SET_DI(1));
1805         stat->td.td_cbp = 0;
1806         stat->nexttd = tail;
1807         stat->td.td_nexttd = htole32(tail->physaddr);
1808         stat->td.td_be = 0;
1809         stat->flags = OHCI_CALL_DONE;
1810         stat->len = 0;
1811         stat->xfer = xfer;
1812
1813 #ifdef USB_DEBUG
1814         if (ohcidebug > 5) {
1815                 DPRINTF(("ohci_device_request:\n"));
1816                 ohci_dump_ed(sed);
1817                 ohci_dump_tds(setup);
1818         }
1819 #endif
1820
1821         /* Insert ED in schedule */
1822         s = splusb();
1823         sed->ed.ed_tailp = htole32(tail->physaddr);
1824         opipe->tail.td = tail;
1825         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
1826         if (xfer->timeout && !sc->sc_bus.use_polling) {
1827                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
1828                             ohci_timeout, xfer);
1829         }
1830         splx(s);
1831
1832 #ifdef USB_DEBUG
1833         if (ohcidebug > 20) {
1834                 delay(10000);
1835                 DPRINTF(("ohci_device_request: status=%x\n",
1836                          OREAD4(sc, OHCI_COMMAND_STATUS)));
1837                 ohci_dumpregs(sc);
1838                 printf("ctrl head:\n");
1839                 ohci_dump_ed(sc->sc_ctrl_head);
1840                 printf("sed:\n");
1841                 ohci_dump_ed(sed);
1842                 ohci_dump_tds(setup);
1843         }
1844 #endif
1845
1846         return (USBD_NORMAL_COMPLETION);
1847
1848  bad3:
1849         ohci_free_std(sc, tail);
1850  bad2:
1851         ohci_free_std(sc, stat);
1852  bad1:
1853         return (err);
1854 }
1855
1856 /*
1857  * Add an ED to the schedule.  Called at splusb().
1858  */
1859 void
1860 ohci_add_ed(ohci_soft_ed_t *sed, ohci_soft_ed_t *head)
1861 {
1862         DPRINTFN(8,("ohci_add_ed: sed=%p head=%p\n", sed, head));
1863
1864         SPLUSBCHECK;
1865         sed->next = head->next;
1866         sed->ed.ed_nexted = head->ed.ed_nexted;
1867         head->next = sed;
1868         head->ed.ed_nexted = htole32(sed->physaddr);
1869 }
1870
1871 /*
1872  * Remove an ED from the schedule.  Called at splusb().
1873  */
1874 void
1875 ohci_rem_ed(ohci_soft_ed_t *sed, ohci_soft_ed_t *head)
1876 {
1877         ohci_soft_ed_t *p;
1878
1879         SPLUSBCHECK;
1880
1881         /* XXX */
1882         for (p = head; p != NULL && p->next != sed; p = p->next)
1883                 ;
1884         if (p == NULL)
1885                 panic("ohci_rem_ed: ED not found");
1886         p->next = sed->next;
1887         p->ed.ed_nexted = sed->ed.ed_nexted;
1888 }
1889
1890 /*
1891  * When a transfer is completed the TD is added to the done queue by
1892  * the host controller.  This queue is the processed by software.
1893  * Unfortunately the queue contains the physical address of the TD
1894  * and we have no simple way to translate this back to a kernel address.
1895  * To make the translation possible (and fast) we use a hash table of
1896  * TDs currently in the schedule.  The physical address is used as the
1897  * hash value.
1898  */
1899
1900 #define HASH(a) (((a) >> 4) % OHCI_HASH_SIZE)
1901 /* Called at splusb() */
1902 void
1903 ohci_hash_add_td(ohci_softc_t *sc, ohci_soft_td_t *std)
1904 {
1905         int h = HASH(std->physaddr);
1906
1907         SPLUSBCHECK;
1908
1909         LIST_INSERT_HEAD(&sc->sc_hash_tds[h], std, hnext);
1910 }
1911
1912 /* Called at splusb() */
1913 void
1914 ohci_hash_rem_td(ohci_softc_t *sc, ohci_soft_td_t *std)
1915 {
1916         SPLUSBCHECK;
1917
1918         LIST_REMOVE(std, hnext);
1919 }
1920
1921 ohci_soft_td_t *
1922 ohci_hash_find_td(ohci_softc_t *sc, ohci_physaddr_t a)
1923 {
1924         int h = HASH(a);
1925         ohci_soft_td_t *std;
1926
1927         /* if these are present they should be masked out at an earlier
1928          * stage.
1929          */
1930         KASSERT((a&~OHCI_HEADMASK) == 0, ("%s: 0x%b has lower bits set\n",
1931                                       USBDEVNAME(sc->sc_bus.bdev),
1932                                       (int) a, "\20\1HALT\2TOGGLE"));
1933
1934         for (std = LIST_FIRST(&sc->sc_hash_tds[h]);
1935              std != NULL;
1936              std = LIST_NEXT(std, hnext))
1937                 if (std->physaddr == a)
1938                         return (std);
1939
1940         DPRINTF(("%s: ohci_hash_find_td: addr 0x%08lx not found\n",
1941                 USBDEVNAME(sc->sc_bus.bdev), (u_long) a));
1942         return (NULL);
1943 }
1944
1945 /* Called at splusb() */
1946 void
1947 ohci_hash_add_itd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
1948 {
1949         int h = HASH(sitd->physaddr);
1950
1951         SPLUSBCHECK;
1952
1953         DPRINTFN(10,("ohci_hash_add_itd: sitd=%p physaddr=0x%08lx\n",
1954                     sitd, (u_long)sitd->physaddr));
1955
1956         LIST_INSERT_HEAD(&sc->sc_hash_itds[h], sitd, hnext);
1957 }
1958
1959 /* Called at splusb() */
1960 void
1961 ohci_hash_rem_itd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
1962 {
1963         SPLUSBCHECK;
1964
1965         DPRINTFN(10,("ohci_hash_rem_itd: sitd=%p physaddr=0x%08lx\n",
1966                     sitd, (u_long)sitd->physaddr));
1967
1968         LIST_REMOVE(sitd, hnext);
1969 }
1970
1971 ohci_soft_itd_t *
1972 ohci_hash_find_itd(ohci_softc_t *sc, ohci_physaddr_t a)
1973 {
1974         int h = HASH(a);
1975         ohci_soft_itd_t *sitd;
1976
1977         for (sitd = LIST_FIRST(&sc->sc_hash_itds[h]);
1978              sitd != NULL;
1979              sitd = LIST_NEXT(sitd, hnext))
1980                 if (sitd->physaddr == a)
1981                         return (sitd);
1982         return (NULL);
1983 }
1984
1985 void
1986 ohci_timeout(void *addr)
1987 {
1988         struct ohci_xfer *oxfer = addr;
1989         struct ohci_pipe *opipe = (struct ohci_pipe *)oxfer->xfer.pipe;
1990         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
1991
1992         DPRINTF(("ohci_timeout: oxfer=%p\n", oxfer));
1993
1994         if (sc->sc_dying) {
1995                 ohci_abort_xfer(&oxfer->xfer, USBD_TIMEOUT);
1996                 return;
1997         }
1998
1999         /* Execute the abort in a process context. */
2000         usb_add_task(oxfer->xfer.pipe->device, &oxfer->abort_task);
2001 }
2002
2003 void
2004 ohci_timeout_task(void *addr)
2005 {
2006         usbd_xfer_handle xfer = addr;
2007         int s;
2008
2009         DPRINTF(("ohci_timeout_task: xfer=%p\n", xfer));
2010
2011         s = splusb();
2012         ohci_abort_xfer(xfer, USBD_TIMEOUT);
2013         splx(s);
2014 }
2015
2016 #ifdef USB_DEBUG
2017 void
2018 ohci_dump_tds(ohci_soft_td_t *std)
2019 {
2020         for (; std; std = std->nexttd)
2021                 ohci_dump_td(std);
2022 }
2023
2024 void
2025 ohci_dump_td(ohci_soft_td_t *std)
2026 {
2027         char sbuf[128];
2028
2029         bitmask_snprintf((u_int32_t)le32toh(std->td.td_flags),
2030                          "\20\23R\24OUT\25IN\31TOG1\32SETTOGGLE",
2031                          sbuf, sizeof(sbuf));
2032
2033         printf("TD(%p) at %08lx: %s delay=%d ec=%d cc=%d\ncbp=0x%08lx "
2034                "nexttd=0x%08lx be=0x%08lx\n",
2035                std, (u_long)std->physaddr, sbuf,
2036                OHCI_TD_GET_DI(le32toh(std->td.td_flags)),
2037                OHCI_TD_GET_EC(le32toh(std->td.td_flags)),
2038                OHCI_TD_GET_CC(le32toh(std->td.td_flags)),
2039                (u_long)le32toh(std->td.td_cbp),
2040                (u_long)le32toh(std->td.td_nexttd),
2041                (u_long)le32toh(std->td.td_be));
2042 }
2043
2044 void
2045 ohci_dump_itd(ohci_soft_itd_t *sitd)
2046 {
2047         int i;
2048
2049         printf("ITD(%p) at %08lx: sf=%d di=%d fc=%d cc=%d\n"
2050                "bp0=0x%08lx next=0x%08lx be=0x%08lx\n",
2051                sitd, (u_long)sitd->physaddr,
2052                OHCI_ITD_GET_SF(le32toh(sitd->itd.itd_flags)),
2053                OHCI_ITD_GET_DI(le32toh(sitd->itd.itd_flags)),
2054                OHCI_ITD_GET_FC(le32toh(sitd->itd.itd_flags)),
2055                OHCI_ITD_GET_CC(le32toh(sitd->itd.itd_flags)),
2056                (u_long)le32toh(sitd->itd.itd_bp0),
2057                (u_long)le32toh(sitd->itd.itd_nextitd),
2058                (u_long)le32toh(sitd->itd.itd_be));
2059         for (i = 0; i < OHCI_ITD_NOFFSET; i++)
2060                 printf("offs[%d]=0x%04x ", i,
2061                        (u_int)le16toh(sitd->itd.itd_offset[i]));
2062         printf("\n");
2063 }
2064
2065 void
2066 ohci_dump_itds(ohci_soft_itd_t *sitd)
2067 {
2068         for (; sitd; sitd = sitd->nextitd)
2069                 ohci_dump_itd(sitd);
2070 }
2071
2072 void
2073 ohci_dump_ed(ohci_soft_ed_t *sed)
2074 {
2075         char sbuf[128], sbuf2[128];
2076
2077         bitmask_snprintf((u_int32_t)le32toh(sed->ed.ed_flags),
2078                          "\20\14OUT\15IN\16LOWSPEED\17SKIP\20ISO",
2079                          sbuf, sizeof(sbuf));
2080         bitmask_snprintf((u_int32_t)le32toh(sed->ed.ed_headp),
2081                          "\20\1HALT\2CARRY", sbuf2, sizeof(sbuf2));
2082
2083         printf("ED(%p) at 0x%08lx: addr=%d endpt=%d maxp=%d flags=%s\ntailp=0x%08lx "
2084                  "headflags=%s headp=0x%08lx nexted=0x%08lx\n",
2085                  sed, (u_long)sed->physaddr,
2086                  OHCI_ED_GET_FA(le32toh(sed->ed.ed_flags)),
2087                  OHCI_ED_GET_EN(le32toh(sed->ed.ed_flags)),
2088                  OHCI_ED_GET_MAXP(le32toh(sed->ed.ed_flags)), sbuf,
2089                  (u_long)le32toh(sed->ed.ed_tailp), sbuf2,
2090                  (u_long)le32toh(sed->ed.ed_headp),
2091                  (u_long)le32toh(sed->ed.ed_nexted));
2092 }
2093 #endif
2094
2095 usbd_status
2096 ohci_open(usbd_pipe_handle pipe)
2097 {
2098         usbd_device_handle dev = pipe->device;
2099         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
2100         usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
2101         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2102         u_int8_t addr = dev->address;
2103         u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE;
2104         ohci_soft_ed_t *sed;
2105         ohci_soft_td_t *std;
2106         ohci_soft_itd_t *sitd;
2107         ohci_physaddr_t tdphys;
2108         u_int32_t fmt;
2109         usbd_status err;
2110         int s;
2111         int ival;
2112
2113         DPRINTFN(1, ("ohci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
2114                      pipe, addr, ed->bEndpointAddress, sc->sc_addr));
2115
2116         if (sc->sc_dying)
2117                 return (USBD_IOERROR);
2118
2119         std = NULL;
2120         sed = NULL;
2121
2122         if (addr == sc->sc_addr) {
2123                 switch (ed->bEndpointAddress) {
2124                 case USB_CONTROL_ENDPOINT:
2125                         pipe->methods = &ohci_root_ctrl_methods;
2126                         break;
2127                 case UE_DIR_IN | OHCI_INTR_ENDPT:
2128                         pipe->methods = &ohci_root_intr_methods;
2129                         break;
2130                 default:
2131                         return (USBD_INVAL);
2132                 }
2133         } else {
2134                 sed = ohci_alloc_sed(sc);
2135                 if (sed == NULL)
2136                         goto bad0;
2137                 opipe->sed = sed;
2138                 if (xfertype == UE_ISOCHRONOUS) {
2139                         sitd = ohci_alloc_sitd(sc);
2140                         if (sitd == NULL)
2141                                 goto bad1;
2142                         opipe->tail.itd = sitd;
2143                         opipe->aborting = 0;
2144                         tdphys = sitd->physaddr;
2145                         fmt = OHCI_ED_FORMAT_ISO;
2146                         if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN)
2147                                 fmt |= OHCI_ED_DIR_IN;
2148                         else
2149                                 fmt |= OHCI_ED_DIR_OUT;
2150                 } else {
2151                         std = ohci_alloc_std(sc);
2152                         if (std == NULL)
2153                                 goto bad1;
2154                         opipe->tail.td = std;
2155                         tdphys = std->physaddr;
2156                         fmt = OHCI_ED_FORMAT_GEN | OHCI_ED_DIR_TD;
2157                 }
2158                 sed->ed.ed_flags = htole32(
2159                         OHCI_ED_SET_FA(addr) |
2160                         OHCI_ED_SET_EN(UE_GET_ADDR(ed->bEndpointAddress)) |
2161                         (dev->speed == USB_SPEED_LOW ? OHCI_ED_SPEED : 0) |
2162                         fmt |
2163                         OHCI_ED_SET_MAXP(UGETW(ed->wMaxPacketSize)));
2164                 sed->ed.ed_headp = htole32(tdphys |
2165                     (pipe->endpoint->savedtoggle ? OHCI_TOGGLECARRY : 0));
2166                 sed->ed.ed_tailp = htole32(tdphys);
2167
2168                 switch (xfertype) {
2169                 case UE_CONTROL:
2170                         pipe->methods = &ohci_device_ctrl_methods;
2171                         err = usb_allocmem(&sc->sc_bus,
2172                                   sizeof(usb_device_request_t),
2173                                   0, &opipe->u.ctl.reqdma);
2174                         if (err)
2175                                 goto bad;
2176                         s = splusb();
2177                         ohci_add_ed(sed, sc->sc_ctrl_head);
2178                         splx(s);
2179                         break;
2180                 case UE_INTERRUPT:
2181                         pipe->methods = &ohci_device_intr_methods;
2182                         ival = pipe->interval;
2183                         if (ival == USBD_DEFAULT_INTERVAL)
2184                                 ival = ed->bInterval;
2185                         return (ohci_device_setintr(sc, opipe, ival));
2186                 case UE_ISOCHRONOUS:
2187                         pipe->methods = &ohci_device_isoc_methods;
2188                         return (ohci_setup_isoc(pipe));
2189                 case UE_BULK:
2190                         pipe->methods = &ohci_device_bulk_methods;
2191                         s = splusb();
2192                         ohci_add_ed(sed, sc->sc_bulk_head);
2193                         splx(s);
2194                         break;
2195                 }
2196         }
2197         return (USBD_NORMAL_COMPLETION);
2198
2199  bad:
2200         if (std != NULL)
2201                 ohci_free_std(sc, std);
2202  bad1:
2203         if (sed != NULL)
2204                 ohci_free_sed(sc, sed);
2205  bad0:
2206         return (USBD_NOMEM);
2207
2208 }
2209
2210 /*
2211  * Close a reqular pipe.
2212  * Assumes that there are no pending transactions.
2213  */
2214 void
2215 ohci_close_pipe(usbd_pipe_handle pipe, ohci_soft_ed_t *head)
2216 {
2217         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2218         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2219         ohci_soft_ed_t *sed = opipe->sed;
2220         int s;
2221
2222         s = splusb();
2223 #ifdef DIAGNOSTIC
2224         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
2225         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
2226             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK)) {
2227                 ohci_soft_td_t *std;
2228                 std = ohci_hash_find_td(sc, le32toh(sed->ed.ed_headp));
2229                 printf("ohci_close_pipe: pipe not empty sed=%p hd=0x%x "
2230                        "tl=0x%x pipe=%p, std=%p\n", sed,
2231                        (int)le32toh(sed->ed.ed_headp),
2232                        (int)le32toh(sed->ed.ed_tailp),
2233                        pipe, std);
2234 #ifdef USB_DEBUG
2235                 usbd_dump_pipe(&opipe->pipe);
2236 #endif
2237 #ifdef USB_DEBUG
2238                 ohci_dump_ed(sed);
2239                 if (std)
2240                         ohci_dump_td(std);
2241 #endif
2242                 usb_delay_ms(&sc->sc_bus, 2);
2243                 if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
2244                     (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
2245                         printf("ohci_close_pipe: pipe still not empty\n");
2246         }
2247 #endif
2248         ohci_rem_ed(sed, head);
2249         /* Make sure the host controller is not touching this ED */
2250         usb_delay_ms(&sc->sc_bus, 1);
2251         splx(s);
2252         pipe->endpoint->savedtoggle =
2253             (le32toh(sed->ed.ed_headp) & OHCI_TOGGLECARRY) ? 1 : 0;
2254         ohci_free_sed(sc, opipe->sed);
2255 }
2256
2257 /*
2258  * Abort a device request.
2259  * If this routine is called at splusb() it guarantees that the request
2260  * will be removed from the hardware scheduling and that the callback
2261  * for it will be called with USBD_CANCELLED status.
2262  * It's impossible to guarantee that the requested transfer will not
2263  * have happened since the hardware runs concurrently.
2264  * If the transaction has already happened we rely on the ordinary
2265  * interrupt processing to process it.
2266  */
2267 void
2268 ohci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
2269 {
2270         struct ohci_xfer *oxfer = OXFER(xfer);
2271         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
2272         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
2273         ohci_soft_ed_t *sed = opipe->sed;
2274         ohci_soft_td_t *p, *n;
2275         ohci_physaddr_t headp;
2276         int s, hit;
2277
2278         DPRINTF(("ohci_abort_xfer: xfer=%p pipe=%p sed=%p\n", xfer, opipe,sed));
2279
2280         if (sc->sc_dying) {
2281                 /* If we're dying, just do the software part. */
2282                 s = splusb();
2283                 xfer->status = status;  /* make software ignore it */
2284                 usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
2285                 usb_rem_task(xfer->pipe->device, &OXFER(xfer)->abort_task);
2286                 usb_transfer_complete(xfer);
2287                 splx(s);
2288         }
2289
2290         if (xfer->device->bus->intr_context || !curproc)
2291                 panic("ohci_abort_xfer: not in process context");
2292
2293         /*
2294          * If an abort is already in progress then just wait for it to
2295          * complete and return.
2296          */
2297         if (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTING) {
2298                 DPRINTFN(2, ("ohci_abort_xfer: already aborting\n"));
2299                 /* No need to wait if we're aborting from a timeout. */
2300                 if (status == USBD_TIMEOUT)
2301                         return;
2302                 /* Override the status which might be USBD_TIMEOUT. */
2303                 xfer->status = status;
2304                 DPRINTFN(2, ("ohci_abort_xfer: waiting for abort to finish\n"));
2305                 oxfer->ohci_xfer_flags |= OHCI_XFER_ABORTWAIT;
2306                 while (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTING)
2307                         tsleep(&oxfer->ohci_xfer_flags, PZERO, "ohciaw", 0);
2308                 return;
2309         }
2310
2311         /*
2312          * Step 1: Make interrupt routine and hardware ignore xfer.
2313          */
2314         s = splusb();
2315         oxfer->ohci_xfer_flags |= OHCI_XFER_ABORTING;
2316         xfer->status = status;  /* make software ignore it */
2317         usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
2318         usb_rem_task(xfer->pipe->device, &OXFER(xfer)->abort_task);
2319         splx(s);
2320         DPRINTFN(1,("ohci_abort_xfer: stop ed=%p\n", sed));
2321         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* force hardware skip */
2322
2323         /*
2324          * Step 2: Wait until we know hardware has finished any possible
2325          * use of the xfer.  Also make sure the soft interrupt routine
2326          * has run.
2327          */
2328         usb_delay_ms(opipe->pipe.device->bus, 20); /* Hardware finishes in 1ms */
2329         s = splusb();
2330 #ifdef USB_USE_SOFTINTR
2331         sc->sc_softwake = 1;
2332 #endif /* USB_USE_SOFTINTR */
2333         usb_schedsoftintr(&sc->sc_bus);
2334 #ifdef USB_USE_SOFTINTR
2335         tsleep(&sc->sc_softwake, PZERO, "ohciab", 0);
2336 #endif /* USB_USE_SOFTINTR */
2337         splx(s);
2338
2339         /*
2340          * Step 3: Remove any vestiges of the xfer from the hardware.
2341          * The complication here is that the hardware may have executed
2342          * beyond the xfer we're trying to abort.  So as we're scanning
2343          * the TDs of this xfer we check if the hardware points to
2344          * any of them.
2345          */
2346         s = splusb();           /* XXX why? */
2347         p = xfer->hcpriv;
2348 #ifdef DIAGNOSTIC
2349         if (p == NULL) {
2350                 oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTING; /* XXX */
2351                 splx(s);
2352                 printf("ohci_abort_xfer: hcpriv is NULL\n");
2353                 return;
2354         }
2355 #endif
2356 #ifdef USB_DEBUG
2357         if (ohcidebug > 1) {
2358                 DPRINTF(("ohci_abort_xfer: sed=\n"));
2359                 ohci_dump_ed(sed);
2360                 ohci_dump_tds(p);
2361         }
2362 #endif
2363         headp = le32toh(sed->ed.ed_headp) & OHCI_HEADMASK;
2364         hit = 0;
2365         for (; p->xfer == xfer; p = n) {
2366                 hit |= headp == p->physaddr;
2367                 n = p->nexttd;
2368                 ohci_free_std(sc, p);
2369         }
2370         /* Zap headp register if hardware pointed inside the xfer. */
2371         if (hit) {
2372                 DPRINTFN(1,("ohci_abort_xfer: set hd=0x08%x, tl=0x%08x\n",
2373                             (int)p->physaddr, (int)le32toh(sed->ed.ed_tailp)));
2374                 sed->ed.ed_headp = htole32(p->physaddr); /* unlink TDs */
2375         } else {
2376                 DPRINTFN(1,("ohci_abort_xfer: no hit\n"));
2377         }
2378
2379         /*
2380          * Step 4: Turn on hardware again.
2381          */
2382         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* remove hardware skip */
2383
2384         /*
2385          * Step 5: Execute callback.
2386          */
2387         /* Do the wakeup first to avoid touching the xfer after the callback. */
2388         oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTING;
2389         if (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTWAIT) {
2390                 oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTWAIT;
2391                 wakeup(&oxfer->ohci_xfer_flags);
2392         }
2393         usb_transfer_complete(xfer);
2394
2395         splx(s);
2396 }
2397
2398 /*
2399  * Data structures and routines to emulate the root hub.
2400  */
2401 Static usb_device_descriptor_t ohci_devd = {
2402         USB_DEVICE_DESCRIPTOR_SIZE,
2403         UDESC_DEVICE,           /* type */
2404         {0x00, 0x01},           /* USB version */
2405         UDCLASS_HUB,            /* class */
2406         UDSUBCLASS_HUB,         /* subclass */
2407         UDPROTO_FSHUB,          /* protocol */
2408         64,                     /* max packet */
2409         {0},{0},{0x00,0x01},    /* device id */
2410         1,2,0,                  /* string indicies */
2411         1                       /* # of configurations */
2412 };
2413
2414 Static usb_config_descriptor_t ohci_confd = {
2415         USB_CONFIG_DESCRIPTOR_SIZE,
2416         UDESC_CONFIG,
2417         {USB_CONFIG_DESCRIPTOR_SIZE +
2418          USB_INTERFACE_DESCRIPTOR_SIZE +
2419          USB_ENDPOINT_DESCRIPTOR_SIZE},
2420         1,
2421         1,
2422         0,
2423         UC_SELF_POWERED,
2424         0                       /* max power */
2425 };
2426
2427 Static usb_interface_descriptor_t ohci_ifcd = {
2428         USB_INTERFACE_DESCRIPTOR_SIZE,
2429         UDESC_INTERFACE,
2430         0,
2431         0,
2432         1,
2433         UICLASS_HUB,
2434         UISUBCLASS_HUB,
2435         UIPROTO_FSHUB,
2436         0
2437 };
2438
2439 Static usb_endpoint_descriptor_t ohci_endpd = {
2440         USB_ENDPOINT_DESCRIPTOR_SIZE,
2441         UDESC_ENDPOINT,
2442         UE_DIR_IN | OHCI_INTR_ENDPT,
2443         UE_INTERRUPT,
2444         {8, 0},                 /* max packet */
2445         255
2446 };
2447
2448 Static usb_hub_descriptor_t ohci_hubd = {
2449         USB_HUB_DESCRIPTOR_SIZE,
2450         UDESC_HUB,
2451         0,
2452         {0,0},
2453         0,
2454         0,
2455         {0},
2456 };
2457
2458 Static int
2459 ohci_str(usb_string_descriptor_t *p, int l, const char *s)
2460 {
2461         int i;
2462
2463         if (l == 0)
2464                 return (0);
2465         p->bLength = 2 * strlen(s) + 2;
2466         if (l == 1)
2467                 return (1);
2468         p->bDescriptorType = UDESC_STRING;
2469         l -= 2;
2470         for (i = 0; s[i] && l > 1; i++, l -= 2)
2471                 USETW2(p->bString[i], 0, s[i]);
2472         return (2*i+2);
2473 }
2474
2475 /*
2476  * Simulate a hardware hub by handling all the necessary requests.
2477  */
2478 Static usbd_status
2479 ohci_root_ctrl_transfer(usbd_xfer_handle xfer)
2480 {
2481         usbd_status err;
2482
2483         /* Insert last in queue. */
2484         err = usb_insert_transfer(xfer);
2485         if (err)
2486                 return (err);
2487
2488         /* Pipe isn't running, start first */
2489         return (ohci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2490 }
2491
2492 Static usbd_status
2493 ohci_root_ctrl_start(usbd_xfer_handle xfer)
2494 {
2495         ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus;
2496         usb_device_request_t *req;
2497         void *buf = NULL;
2498         int port, i;
2499         int s, len, value, index, l, totlen = 0;
2500         usb_port_status_t ps;
2501         usb_hub_descriptor_t hubd;
2502         usbd_status err;
2503         u_int32_t v;
2504
2505         if (sc->sc_dying)
2506                 return (USBD_IOERROR);
2507
2508 #ifdef DIAGNOSTIC
2509         if (!(xfer->rqflags & URQ_REQUEST))
2510                 /* XXX panic */
2511                 return (USBD_INVAL);
2512 #endif
2513         req = &xfer->request;
2514
2515         DPRINTFN(4,("ohci_root_ctrl_control type=0x%02x request=%02x\n",
2516                     req->bmRequestType, req->bRequest));
2517
2518         len = UGETW(req->wLength);
2519         value = UGETW(req->wValue);
2520         index = UGETW(req->wIndex);
2521
2522         if (len != 0)
2523                 buf = KERNADDR(&xfer->dmabuf, 0);
2524
2525 #define C(x,y) ((x) | ((y) << 8))
2526         switch(C(req->bRequest, req->bmRequestType)) {
2527         case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
2528         case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
2529         case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
2530                 /*
2531                  * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
2532                  * for the integrated root hub.
2533                  */
2534                 break;
2535         case C(UR_GET_CONFIG, UT_READ_DEVICE):
2536                 if (len > 0) {
2537                         *(u_int8_t *)buf = sc->sc_conf;
2538                         totlen = 1;
2539                 }
2540                 break;
2541         case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
2542                 DPRINTFN(8,("ohci_root_ctrl_control wValue=0x%04x\n", value));
2543                 switch(value >> 8) {
2544                 case UDESC_DEVICE:
2545                         if ((value & 0xff) != 0) {
2546                                 err = USBD_IOERROR;
2547                                 goto ret;
2548                         }
2549                         totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
2550                         USETW(ohci_devd.idVendor, sc->sc_id_vendor);
2551                         memcpy(buf, &ohci_devd, l);
2552                         break;
2553                 case UDESC_CONFIG:
2554                         if ((value & 0xff) != 0) {
2555                                 err = USBD_IOERROR;
2556                                 goto ret;
2557                         }
2558                         totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
2559                         memcpy(buf, &ohci_confd, l);
2560                         buf = (char *)buf + l;
2561                         len -= l;
2562                         l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
2563                         totlen += l;
2564                         memcpy(buf, &ohci_ifcd, l);
2565                         buf = (char *)buf + l;
2566                         len -= l;
2567                         l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
2568                         totlen += l;
2569                         memcpy(buf, &ohci_endpd, l);
2570                         break;
2571                 case UDESC_STRING:
2572                         if (len == 0)
2573                                 break;
2574                         *(u_int8_t *)buf = 0;
2575                         totlen = 1;
2576                         switch (value & 0xff) {
2577                         case 1: /* Vendor */
2578                                 totlen = ohci_str(buf, len, sc->sc_vendor);
2579                                 break;
2580                         case 2: /* Product */
2581                                 totlen = ohci_str(buf, len, "OHCI root hub");
2582                                 break;
2583                         }
2584                         break;
2585                 default:
2586                         err = USBD_IOERROR;
2587                         goto ret;
2588                 }
2589                 break;
2590         case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
2591                 if (len > 0) {
2592                         *(u_int8_t *)buf = 0;
2593                         totlen = 1;
2594                 }
2595                 break;
2596         case C(UR_GET_STATUS, UT_READ_DEVICE):
2597                 if (len > 1) {
2598                         USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
2599                         totlen = 2;
2600                 }
2601                 break;
2602         case C(UR_GET_STATUS, UT_READ_INTERFACE):
2603         case C(UR_GET_STATUS, UT_READ_ENDPOINT):
2604                 if (len > 1) {
2605                         USETW(((usb_status_t *)buf)->wStatus, 0);
2606                         totlen = 2;
2607                 }
2608                 break;
2609         case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
2610                 if (value >= USB_MAX_DEVICES) {
2611                         err = USBD_IOERROR;
2612                         goto ret;
2613                 }
2614                 sc->sc_addr = value;
2615                 break;
2616         case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
2617                 if (value != 0 && value != 1) {
2618                         err = USBD_IOERROR;
2619                         goto ret;
2620                 }
2621                 sc->sc_conf = value;
2622                 break;
2623         case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
2624                 break;
2625         case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
2626         case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
2627         case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
2628                 err = USBD_IOERROR;
2629                 goto ret;
2630         case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
2631                 break;
2632         case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
2633                 break;
2634         /* Hub requests */
2635         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
2636                 break;
2637         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
2638                 DPRINTFN(8, ("ohci_root_ctrl_control: UR_CLEAR_PORT_FEATURE "
2639                              "port=%d feature=%d\n",
2640                              index, value));
2641                 if (index < 1 || index > sc->sc_noport) {
2642                         err = USBD_IOERROR;
2643                         goto ret;
2644                 }
2645                 port = OHCI_RH_PORT_STATUS(index);
2646                 switch(value) {
2647                 case UHF_PORT_ENABLE:
2648                         OWRITE4(sc, port, UPS_CURRENT_CONNECT_STATUS);
2649                         break;
2650                 case UHF_PORT_SUSPEND:
2651                         OWRITE4(sc, port, UPS_OVERCURRENT_INDICATOR);
2652                         break;
2653                 case UHF_PORT_POWER:
2654                         /* Yes, writing to the LOW_SPEED bit clears power. */
2655                         OWRITE4(sc, port, UPS_LOW_SPEED);
2656                         break;
2657                 case UHF_C_PORT_CONNECTION:
2658                         OWRITE4(sc, port, UPS_C_CONNECT_STATUS << 16);
2659                         break;
2660                 case UHF_C_PORT_ENABLE:
2661                         OWRITE4(sc, port, UPS_C_PORT_ENABLED << 16);
2662                         break;
2663                 case UHF_C_PORT_SUSPEND:
2664                         OWRITE4(sc, port, UPS_C_SUSPEND << 16);
2665                         break;
2666                 case UHF_C_PORT_OVER_CURRENT:
2667                         OWRITE4(sc, port, UPS_C_OVERCURRENT_INDICATOR << 16);
2668                         break;
2669                 case UHF_C_PORT_RESET:
2670                         OWRITE4(sc, port, UPS_C_PORT_RESET << 16);
2671                         break;
2672                 default:
2673                         err = USBD_IOERROR;
2674                         goto ret;
2675                 }
2676                 switch(value) {
2677                 case UHF_C_PORT_CONNECTION:
2678                 case UHF_C_PORT_ENABLE:
2679                 case UHF_C_PORT_SUSPEND:
2680                 case UHF_C_PORT_OVER_CURRENT:
2681                 case UHF_C_PORT_RESET:
2682                         /* Enable RHSC interrupt if condition is cleared. */
2683                         if ((OREAD4(sc, port) >> 16) == 0)
2684                                 ohci_rhsc_able(sc, 1);
2685                         break;
2686                 default:
2687                         break;
2688                 }
2689                 break;
2690         case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
2691                 if ((value & 0xff) != 0) {
2692                         err = USBD_IOERROR;
2693                         goto ret;
2694                 }
2695                 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
2696                 hubd = ohci_hubd;
2697                 hubd.bNbrPorts = sc->sc_noport;
2698                 USETW(hubd.wHubCharacteristics,
2699                       (v & OHCI_NPS ? UHD_PWR_NO_SWITCH :
2700                        v & OHCI_PSM ? UHD_PWR_GANGED : UHD_PWR_INDIVIDUAL)
2701                       /* XXX overcurrent */
2702                       );
2703                 hubd.bPwrOn2PwrGood = OHCI_GET_POTPGT(v);
2704                 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_B);
2705                 for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8)
2706                         hubd.DeviceRemovable[i++] = (u_int8_t)v;
2707                 hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i;
2708                 l = min(len, hubd.bDescLength);
2709                 totlen = l;
2710                 memcpy(buf, &hubd, l);
2711                 break;
2712         case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
2713                 if (len != 4) {
2714                         err = USBD_IOERROR;
2715                         goto ret;
2716                 }
2717                 memset(buf, 0, len); /* ? XXX */
2718                 totlen = len;
2719                 break;
2720         case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
2721                 DPRINTFN(8,("ohci_root_ctrl_transfer: get port status i=%d\n",
2722                             index));
2723                 if (index < 1 || index > sc->sc_noport) {
2724                         err = USBD_IOERROR;
2725                         goto ret;
2726                 }
2727                 if (len != 4) {
2728                         err = USBD_IOERROR;
2729                         goto ret;
2730                 }
2731                 v = OREAD4(sc, OHCI_RH_PORT_STATUS(index));
2732                 DPRINTFN(8,("ohci_root_ctrl_transfer: port status=0x%04x\n",
2733                             v));
2734                 USETW(ps.wPortStatus, v);
2735                 USETW(ps.wPortChange, v >> 16);
2736                 l = min(len, sizeof ps);
2737                 memcpy(buf, &ps, l);
2738                 totlen = l;
2739                 break;
2740         case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
2741                 err = USBD_IOERROR;
2742                 goto ret;
2743         case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
2744                 break;
2745         case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
2746                 if (index < 1 || index > sc->sc_noport) {
2747                         err = USBD_IOERROR;
2748                         goto ret;
2749                 }
2750                 port = OHCI_RH_PORT_STATUS(index);
2751                 switch(value) {
2752                 case UHF_PORT_ENABLE:
2753                         OWRITE4(sc, port, UPS_PORT_ENABLED);
2754                         break;
2755                 case UHF_PORT_SUSPEND:
2756                         OWRITE4(sc, port, UPS_SUSPEND);
2757                         break;
2758                 case UHF_PORT_RESET:
2759                         DPRINTFN(5,("ohci_root_ctrl_transfer: reset port %d\n",
2760                                     index));
2761                         OWRITE4(sc, port, UPS_RESET);
2762                         for (i = 0; i < 5; i++) {
2763                                 usb_delay_ms(&sc->sc_bus,
2764                                              USB_PORT_ROOT_RESET_DELAY);
2765                                 if (sc->sc_dying) {
2766                                         err = USBD_IOERROR;
2767                                         goto ret;
2768                                 }
2769                                 if ((OREAD4(sc, port) & UPS_RESET) == 0)
2770                                         break;
2771                         }
2772                         DPRINTFN(8,("ohci port %d reset, status = 0x%04x\n",
2773                                     index, OREAD4(sc, port)));
2774                         break;
2775                 case UHF_PORT_POWER:
2776                         DPRINTFN(2,("ohci_root_ctrl_transfer: set port power "
2777                                     "%d\n", index));
2778                         OWRITE4(sc, port, UPS_PORT_POWER);
2779                         break;
2780                 default:
2781                         err = USBD_IOERROR;
2782                         goto ret;
2783                 }
2784                 break;
2785         default:
2786                 err = USBD_IOERROR;
2787                 goto ret;
2788         }
2789         xfer->actlen = totlen;
2790         err = USBD_NORMAL_COMPLETION;
2791  ret:
2792         xfer->status = err;
2793         s = splusb();
2794         usb_transfer_complete(xfer);
2795         splx(s);
2796         return (USBD_IN_PROGRESS);
2797 }
2798
2799 /* Abort a root control request. */
2800 Static void
2801 ohci_root_ctrl_abort(usbd_xfer_handle xfer)
2802 {
2803         /* Nothing to do, all transfers are synchronous. */
2804 }
2805
2806 /* Close the root pipe. */
2807 Static void
2808 ohci_root_ctrl_close(usbd_pipe_handle pipe)
2809 {
2810         DPRINTF(("ohci_root_ctrl_close\n"));
2811         /* Nothing to do. */
2812 }
2813
2814 Static usbd_status
2815 ohci_root_intr_transfer(usbd_xfer_handle xfer)
2816 {
2817         usbd_status err;
2818
2819         /* Insert last in queue. */
2820         err = usb_insert_transfer(xfer);
2821         if (err)
2822                 return (err);
2823
2824         /* Pipe isn't running, start first */
2825         return (ohci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2826 }
2827
2828 Static usbd_status
2829 ohci_root_intr_start(usbd_xfer_handle xfer)
2830 {
2831         usbd_pipe_handle pipe = xfer->pipe;
2832         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2833
2834         if (sc->sc_dying)
2835                 return (USBD_IOERROR);
2836
2837         sc->sc_intrxfer = xfer;
2838
2839         return (USBD_IN_PROGRESS);
2840 }
2841
2842 /* Abort a root interrupt request. */
2843 Static void
2844 ohci_root_intr_abort(usbd_xfer_handle xfer)
2845 {
2846         int s;
2847
2848         if (xfer->pipe->intrxfer == xfer) {
2849                 DPRINTF(("ohci_root_intr_abort: remove\n"));
2850                 xfer->pipe->intrxfer = NULL;
2851         }
2852         xfer->status = USBD_CANCELLED;
2853         s = splusb();
2854         usb_transfer_complete(xfer);
2855         splx(s);
2856 }
2857
2858 /* Close the root pipe. */
2859 Static void
2860 ohci_root_intr_close(usbd_pipe_handle pipe)
2861 {
2862         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2863
2864         DPRINTF(("ohci_root_intr_close\n"));
2865
2866         sc->sc_intrxfer = NULL;
2867 }
2868
2869 /************************/
2870
2871 Static usbd_status
2872 ohci_device_ctrl_transfer(usbd_xfer_handle xfer)
2873 {
2874         usbd_status err;
2875
2876         /* Insert last in queue. */
2877         err = usb_insert_transfer(xfer);
2878         if (err)
2879                 return (err);
2880
2881         /* Pipe isn't running, start first */
2882         return (ohci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2883 }
2884
2885 Static usbd_status
2886 ohci_device_ctrl_start(usbd_xfer_handle xfer)
2887 {
2888         ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus;
2889         usbd_status err;
2890
2891         if (sc->sc_dying)
2892                 return (USBD_IOERROR);
2893
2894 #ifdef DIAGNOSTIC
2895         if (!(xfer->rqflags & URQ_REQUEST)) {
2896                 /* XXX panic */
2897                 printf("ohci_device_ctrl_transfer: not a request\n");
2898                 return (USBD_INVAL);
2899         }
2900 #endif
2901
2902         err = ohci_device_request(xfer);
2903         if (err)
2904                 return (err);
2905
2906         if (sc->sc_bus.use_polling)
2907                 ohci_waitintr(sc, xfer);
2908         return (USBD_IN_PROGRESS);
2909 }
2910
2911 /* Abort a device control request. */
2912 Static void
2913 ohci_device_ctrl_abort(usbd_xfer_handle xfer)
2914 {
2915         DPRINTF(("ohci_device_ctrl_abort: xfer=%p\n", xfer));
2916         ohci_abort_xfer(xfer, USBD_CANCELLED);
2917 }
2918
2919 /* Close a device control pipe. */
2920 Static void
2921 ohci_device_ctrl_close(usbd_pipe_handle pipe)
2922 {
2923         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2924         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2925
2926         DPRINTF(("ohci_device_ctrl_close: pipe=%p\n", pipe));
2927         ohci_close_pipe(pipe, sc->sc_ctrl_head);
2928         ohci_free_std(sc, opipe->tail.td);
2929 }
2930
2931 /************************/
2932
2933 Static void
2934 ohci_device_clear_toggle(usbd_pipe_handle pipe)
2935 {
2936         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2937
2938         opipe->sed->ed.ed_headp &= htole32(~OHCI_TOGGLECARRY);
2939 }
2940
2941 Static void
2942 ohci_noop(usbd_pipe_handle pipe)
2943 {
2944 }
2945
2946 Static usbd_status
2947 ohci_device_bulk_transfer(usbd_xfer_handle xfer)
2948 {
2949         usbd_status err;
2950
2951         /* Insert last in queue. */
2952         err = usb_insert_transfer(xfer);
2953         if (err)
2954                 return (err);
2955
2956         /* Pipe isn't running, start first */
2957         return (ohci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2958 }
2959
2960 Static usbd_status
2961 ohci_device_bulk_start(usbd_xfer_handle xfer)
2962 {
2963         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
2964         usbd_device_handle dev = opipe->pipe.device;
2965         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
2966         int addr = dev->address;
2967         ohci_soft_td_t *data, *tail, *tdp;
2968         ohci_soft_ed_t *sed;
2969         int s, len, isread, endpt;
2970         usbd_status err;
2971
2972         if (sc->sc_dying)
2973                 return (USBD_IOERROR);
2974
2975 #ifdef DIAGNOSTIC
2976         if (xfer->rqflags & URQ_REQUEST) {
2977                 /* XXX panic */
2978                 printf("ohci_device_bulk_start: a request\n");
2979                 return (USBD_INVAL);
2980         }
2981 #endif
2982
2983         len = xfer->length;
2984         endpt = xfer->pipe->endpoint->edesc->bEndpointAddress;
2985         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
2986         sed = opipe->sed;
2987
2988         DPRINTFN(4,("ohci_device_bulk_start: xfer=%p len=%d isread=%d "
2989                     "flags=%d endpt=%d\n", xfer, len, isread, xfer->flags,
2990                     endpt));
2991
2992         opipe->u.bulk.isread = isread;
2993         opipe->u.bulk.length = len;
2994
2995         /* Update device address */
2996         sed->ed.ed_flags = htole32(
2997                 (le32toh(sed->ed.ed_flags) & ~OHCI_ED_ADDRMASK) |
2998                 OHCI_ED_SET_FA(addr));
2999
3000         /* Allocate a chain of new TDs (including a new tail). */
3001         data = opipe->tail.td;
3002         err = ohci_alloc_std_chain(opipe, sc, len, isread, xfer,
3003                   data, &tail);
3004         /* We want interrupt at the end of the transfer. */
3005         tail->td.td_flags &= htole32(~OHCI_TD_INTR_MASK);
3006         tail->td.td_flags |= htole32(OHCI_TD_SET_DI(1));
3007         tail->flags |= OHCI_CALL_DONE;
3008         tail = tail->nexttd;    /* point at sentinel */
3009         if (err)
3010                 return (err);
3011
3012         tail->xfer = NULL;
3013         xfer->hcpriv = data;
3014
3015         DPRINTFN(4,("ohci_device_bulk_start: ed_flags=0x%08x td_flags=0x%08x "
3016                     "td_cbp=0x%08x td_be=0x%08x\n",
3017                     (int)le32toh(sed->ed.ed_flags),
3018                     (int)le32toh(data->td.td_flags),
3019                     (int)le32toh(data->td.td_cbp),
3020                     (int)le32toh(data->td.td_be)));
3021
3022 #ifdef USB_DEBUG
3023         if (ohcidebug > 5) {
3024                 ohci_dump_ed(sed);
3025                 ohci_dump_tds(data);
3026         }
3027 #endif
3028
3029         /* Insert ED in schedule */
3030         s = splusb();
3031         for (tdp = data; tdp != tail; tdp = tdp->nexttd) {
3032                 tdp->xfer = xfer;
3033         }
3034         sed->ed.ed_tailp = htole32(tail->physaddr);
3035         opipe->tail.td = tail;
3036         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
3037         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF);
3038         if (xfer->timeout && !sc->sc_bus.use_polling) {
3039                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
3040                             ohci_timeout, xfer);
3041         }
3042
3043 #if 0
3044 /* This goes wrong if we are too slow. */
3045         if (ohcidebug > 10) {
3046                 delay(10000);
3047                 DPRINTF(("ohci_device_intr_transfer: status=%x\n",
3048                          OREAD4(sc, OHCI_COMMAND_STATUS)));
3049                 ohci_dump_ed(sed);
3050                 ohci_dump_tds(data);
3051         }
3052 #endif
3053
3054         splx(s);
3055
3056         if (sc->sc_bus.use_polling)
3057                 ohci_waitintr(sc, xfer);
3058
3059         return (USBD_IN_PROGRESS);
3060 }
3061
3062 Static void
3063 ohci_device_bulk_abort(usbd_xfer_handle xfer)
3064 {
3065         DPRINTF(("ohci_device_bulk_abort: xfer=%p\n", xfer));
3066         ohci_abort_xfer(xfer, USBD_CANCELLED);
3067 }
3068
3069 /*
3070  * Close a device bulk pipe.
3071  */
3072 Static void
3073 ohci_device_bulk_close(usbd_pipe_handle pipe)
3074 {
3075         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3076         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3077
3078         DPRINTF(("ohci_device_bulk_close: pipe=%p\n", pipe));
3079         ohci_close_pipe(pipe, sc->sc_bulk_head);
3080         ohci_free_std(sc, opipe->tail.td);
3081 }
3082
3083 /************************/
3084
3085 Static usbd_status
3086 ohci_device_intr_transfer(usbd_xfer_handle xfer)
3087 {
3088         usbd_status err;
3089
3090         /* Insert last in queue. */
3091         err = usb_insert_transfer(xfer);
3092         if (err)
3093                 return (err);
3094
3095         /* Pipe isn't running, start first */
3096         return (ohci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
3097 }
3098
3099 Static usbd_status
3100 ohci_device_intr_start(usbd_xfer_handle xfer)
3101 {
3102         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3103         usbd_device_handle dev = opipe->pipe.device;
3104         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
3105         ohci_soft_ed_t *sed = opipe->sed;
3106         ohci_soft_td_t *data, *tail;
3107         int len;
3108         int s;
3109
3110         if (sc->sc_dying)
3111                 return (USBD_IOERROR);
3112
3113         DPRINTFN(3, ("ohci_device_intr_transfer: xfer=%p len=%d "
3114                      "flags=%d priv=%p\n",
3115                      xfer, xfer->length, xfer->flags, xfer->priv));
3116
3117 #ifdef DIAGNOSTIC
3118         if (xfer->rqflags & URQ_REQUEST)
3119                 panic("ohci_device_intr_transfer: a request");
3120 #endif
3121
3122         len = xfer->length;
3123
3124         data = opipe->tail.td;
3125         tail = ohci_alloc_std(sc);
3126         if (tail == NULL)
3127                 return (USBD_NOMEM);
3128         tail->xfer = NULL;
3129
3130         data->td.td_flags = htole32(
3131                 OHCI_TD_IN | OHCI_TD_NOCC |
3132                 OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY);
3133         if (xfer->flags & USBD_SHORT_XFER_OK)
3134                 data->td.td_flags |= htole32(OHCI_TD_R);
3135         data->td.td_cbp = htole32(DMAADDR(&xfer->dmabuf, 0));
3136         data->nexttd = tail;
3137         data->td.td_nexttd = htole32(tail->physaddr);
3138         data->td.td_be = htole32(le32toh(data->td.td_cbp) + len - 1);
3139         data->len = len;
3140         data->xfer = xfer;
3141         data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN;
3142         xfer->hcpriv = data;
3143
3144 #ifdef USB_DEBUG
3145         if (ohcidebug > 5) {
3146                 DPRINTF(("ohci_device_intr_transfer:\n"));
3147                 ohci_dump_ed(sed);
3148                 ohci_dump_tds(data);
3149         }
3150 #endif
3151
3152         /* Insert ED in schedule */
3153         s = splusb();
3154         sed->ed.ed_tailp = htole32(tail->physaddr);
3155         opipe->tail.td = tail;
3156         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
3157
3158 #if 0
3159 /*
3160  * This goes horribly wrong, printing thousands of descriptors,
3161  * because false references are followed due to the fact that the
3162  * TD is gone.
3163  */
3164         if (ohcidebug > 5) {
3165                 usb_delay_ms(&sc->sc_bus, 5);
3166                 DPRINTF(("ohci_device_intr_transfer: status=%x\n",
3167                          OREAD4(sc, OHCI_COMMAND_STATUS)));
3168                 ohci_dump_ed(sed);
3169                 ohci_dump_tds(data);
3170         }
3171 #endif
3172         splx(s);
3173
3174         return (USBD_IN_PROGRESS);
3175 }
3176
3177 /* Abort a device control request. */
3178 Static void
3179 ohci_device_intr_abort(usbd_xfer_handle xfer)
3180 {
3181         if (xfer->pipe->intrxfer == xfer) {
3182                 DPRINTF(("ohci_device_intr_abort: remove\n"));
3183                 xfer->pipe->intrxfer = NULL;
3184         }
3185         ohci_abort_xfer(xfer, USBD_CANCELLED);
3186 }
3187
3188 /* Close a device interrupt pipe. */
3189 Static void
3190 ohci_device_intr_close(usbd_pipe_handle pipe)
3191 {
3192         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3193         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3194         int nslots = opipe->u.intr.nslots;
3195         int pos = opipe->u.intr.pos;
3196         int j;
3197         ohci_soft_ed_t *p, *sed = opipe->sed;
3198         int s;
3199
3200         DPRINTFN(1,("ohci_device_intr_close: pipe=%p nslots=%d pos=%d\n",
3201                     pipe, nslots, pos));
3202         s = splusb();
3203         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
3204         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
3205             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
3206                 usb_delay_ms(&sc->sc_bus, 2);
3207 #ifdef DIAGNOSTIC
3208         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
3209             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
3210                 panic("%s: Intr pipe %p still has TDs queued",
3211                         USBDEVNAME(sc->sc_bus.bdev), pipe);
3212 #endif
3213
3214         for (p = sc->sc_eds[pos]; p && p->next != sed; p = p->next)
3215                 ;
3216 #ifdef DIAGNOSTIC
3217         if (p == NULL)
3218                 panic("ohci_device_intr_close: ED not found");
3219 #endif
3220         p->next = sed->next;
3221         p->ed.ed_nexted = sed->ed.ed_nexted;
3222         splx(s);
3223
3224         for (j = 0; j < nslots; j++)
3225                 --sc->sc_bws[(pos * nslots + j) % OHCI_NO_INTRS];
3226
3227         ohci_free_std(sc, opipe->tail.td);
3228         ohci_free_sed(sc, opipe->sed);
3229 }
3230
3231 Static usbd_status
3232 ohci_device_setintr(ohci_softc_t *sc, struct ohci_pipe *opipe, int ival)
3233 {
3234         int i, j, s, best;
3235         u_int npoll, slow, shigh, nslots;
3236         u_int bestbw, bw;
3237         ohci_soft_ed_t *hsed, *sed = opipe->sed;
3238
3239         DPRINTFN(2, ("ohci_setintr: pipe=%p\n", opipe));
3240         if (ival == 0) {
3241                 printf("ohci_setintr: 0 interval\n");
3242                 return (USBD_INVAL);
3243         }
3244
3245         npoll = OHCI_NO_INTRS;
3246         while (npoll > ival)
3247                 npoll /= 2;
3248         DPRINTFN(2, ("ohci_setintr: ival=%d npoll=%d\n", ival, npoll));
3249
3250         /*
3251          * We now know which level in the tree the ED must go into.
3252          * Figure out which slot has most bandwidth left over.
3253          * Slots to examine:
3254          * npoll
3255          * 1    0
3256          * 2    1 2
3257          * 4    3 4 5 6
3258          * 8    7 8 9 10 11 12 13 14
3259          * N    (N-1) .. (N-1+N-1)
3260          */
3261         slow = npoll-1;
3262         shigh = slow + npoll;
3263         nslots = OHCI_NO_INTRS / npoll;
3264         for (best = i = slow, bestbw = ~0; i < shigh; i++) {
3265                 bw = 0;
3266                 for (j = 0; j < nslots; j++)
3267                         bw += sc->sc_bws[(i * nslots + j) % OHCI_NO_INTRS];
3268                 if (bw < bestbw) {
3269                         best = i;
3270                         bestbw = bw;
3271                 }
3272         }
3273         DPRINTFN(2, ("ohci_setintr: best=%d(%d..%d) bestbw=%d\n",
3274                      best, slow, shigh, bestbw));
3275
3276         s = splusb();
3277         hsed = sc->sc_eds[best];
3278         sed->next = hsed->next;
3279         sed->ed.ed_nexted = hsed->ed.ed_nexted;
3280         hsed->next = sed;
3281         hsed->ed.ed_nexted = htole32(sed->physaddr);
3282         splx(s);
3283
3284         for (j = 0; j < nslots; j++)
3285                 ++sc->sc_bws[(best * nslots + j) % OHCI_NO_INTRS];
3286         opipe->u.intr.nslots = nslots;
3287         opipe->u.intr.pos = best;
3288
3289         DPRINTFN(5, ("ohci_setintr: returns %p\n", opipe));
3290         return (USBD_NORMAL_COMPLETION);
3291 }
3292
3293 /***********************/
3294
3295 usbd_status
3296 ohci_device_isoc_transfer(usbd_xfer_handle xfer)
3297 {
3298         usbd_status err;
3299
3300         DPRINTFN(5,("ohci_device_isoc_transfer: xfer=%p\n", xfer));
3301
3302         /* Put it on our queue, */
3303         err = usb_insert_transfer(xfer);
3304
3305         /* bail out on error, */
3306         if (err && err != USBD_IN_PROGRESS)
3307                 return (err);
3308
3309         /* XXX should check inuse here */
3310
3311         /* insert into schedule, */
3312         ohci_device_isoc_enter(xfer);
3313
3314         /* and start if the pipe wasn't running */
3315         if (!err)
3316                 ohci_device_isoc_start(SIMPLEQ_FIRST(&xfer->pipe->queue));
3317
3318         return (err);
3319 }
3320
3321 void
3322 ohci_device_isoc_enter(usbd_xfer_handle xfer)
3323 {
3324         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3325         usbd_device_handle dev = opipe->pipe.device;
3326         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
3327         ohci_soft_ed_t *sed = opipe->sed;
3328         struct iso *iso = &opipe->u.iso;
3329         struct ohci_xfer *oxfer = (struct ohci_xfer *)xfer;
3330         ohci_soft_itd_t *sitd, *nsitd;
3331         ohci_physaddr_t buf, offs, noffs, bp0, tdphys;
3332         int i, ncur, nframes;
3333         int s;
3334
3335         DPRINTFN(1,("ohci_device_isoc_enter: used=%d next=%d xfer=%p "
3336                     "nframes=%d\n",
3337                     iso->inuse, iso->next, xfer, xfer->nframes));
3338
3339         if (sc->sc_dying)
3340                 return;
3341
3342         if (iso->next == -1) {
3343                 /* Not in use yet, schedule it a few frames ahead. */
3344                 iso->next = le32toh(sc->sc_hcca->hcca_frame_number) + 5;
3345                 DPRINTFN(2,("ohci_device_isoc_enter: start next=%d\n",
3346                             iso->next));
3347         }
3348
3349         if (xfer->hcpriv) {
3350                 for (sitd = xfer->hcpriv; sitd != NULL && sitd->xfer == xfer;
3351                     sitd = sitd->nextitd)
3352                         ohci_free_sitd(sc, sitd); /* Free ITDs in prev xfer*/
3353
3354                 if (sitd == NULL) {
3355                         sitd = ohci_alloc_sitd(sc);
3356                         if (sitd == NULL)
3357                                 panic("cant alloc isoc");
3358                         opipe->tail.itd = sitd;
3359                         tdphys = sitd->physaddr;
3360                         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* Stop*/
3361                         sed->ed.ed_headp =
3362                         sed->ed.ed_tailp = htole32(tdphys);
3363                         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* Start.*/
3364                 }
3365         }
3366
3367         sitd = opipe->tail.itd;
3368         buf = DMAADDR(&xfer->dmabuf, 0);
3369         bp0 = OHCI_PAGE(buf);
3370         offs = OHCI_PAGE_OFFSET(buf);
3371         nframes = xfer->nframes;
3372         xfer->hcpriv = sitd;
3373         for (i = ncur = 0; i < nframes; i++, ncur++) {
3374                 noffs = offs + xfer->frlengths[i];
3375                 if (ncur == OHCI_ITD_NOFFSET || /* all offsets used */
3376                     OHCI_PAGE(buf + noffs) > bp0 + OHCI_PAGE_SIZE) { /* too many page crossings */
3377
3378                         /* Allocate next ITD */
3379                         nsitd = ohci_alloc_sitd(sc);
3380                         if (nsitd == NULL) {
3381                                 /* XXX what now? */
3382                                 printf("%s: isoc TD alloc failed\n",
3383                                        USBDEVNAME(sc->sc_bus.bdev));
3384                                 return;
3385                         }
3386
3387                         /* Fill current ITD */
3388                         sitd->itd.itd_flags = htole32(
3389                                 OHCI_ITD_NOCC |
3390                                 OHCI_ITD_SET_SF(iso->next) |
3391                                 OHCI_ITD_SET_DI(6) | /* delay intr a little */
3392                                 OHCI_ITD_SET_FC(ncur));
3393                         sitd->itd.itd_bp0 = htole32(bp0);
3394                         sitd->nextitd = nsitd;
3395                         sitd->itd.itd_nextitd = htole32(nsitd->physaddr);
3396                         sitd->itd.itd_be = htole32(bp0 + offs - 1);
3397                         sitd->xfer = xfer;
3398                         sitd->flags = OHCI_ITD_ACTIVE;
3399
3400                         sitd = nsitd;
3401                         iso->next = iso->next + ncur;
3402                         bp0 = OHCI_PAGE(buf + offs);
3403                         ncur = 0;
3404                 }
3405                 sitd->itd.itd_offset[ncur] = htole16(OHCI_ITD_MK_OFFS(offs));
3406                 offs = noffs;
3407         }
3408         nsitd = ohci_alloc_sitd(sc);
3409         if (nsitd == NULL) {
3410                 /* XXX what now? */
3411                 printf("%s: isoc TD alloc failed\n",
3412                        USBDEVNAME(sc->sc_bus.bdev));
3413                 return;
3414         }
3415         /* Fixup last used ITD */
3416         sitd->itd.itd_flags = htole32(
3417                 OHCI_ITD_NOCC |
3418                 OHCI_ITD_SET_SF(iso->next) |
3419                 OHCI_ITD_SET_DI(0) |
3420                 OHCI_ITD_SET_FC(ncur));
3421         sitd->itd.itd_bp0 = htole32(bp0);
3422         sitd->nextitd = nsitd;
3423         sitd->itd.itd_nextitd = htole32(nsitd->physaddr);
3424         sitd->itd.itd_be = htole32(bp0 + offs - 1);
3425         sitd->xfer = xfer;
3426         sitd->flags = OHCI_CALL_DONE | OHCI_ITD_ACTIVE;
3427
3428         iso->next = iso->next + ncur;
3429         iso->inuse += nframes;
3430
3431         xfer->actlen = offs;    /* XXX pretend we did it all */
3432
3433         xfer->status = USBD_IN_PROGRESS;
3434
3435         oxfer->ohci_xfer_flags |= OHCI_ISOC_DIRTY;
3436
3437 #ifdef USB_DEBUG
3438         if (ohcidebug > 5) {
3439                 DPRINTF(("ohci_device_isoc_enter: frame=%d\n",
3440                          le32toh(sc->sc_hcca->hcca_frame_number)));
3441                 ohci_dump_itds(xfer->hcpriv);
3442                 ohci_dump_ed(sed);
3443         }
3444 #endif
3445
3446         s = splusb();
3447         opipe->tail.itd = nsitd;
3448         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
3449         sed->ed.ed_tailp = htole32(nsitd->physaddr);
3450         splx(s);
3451
3452 #ifdef USB_DEBUG
3453         if (ohcidebug > 5) {
3454                 delay(150000);
3455                 DPRINTF(("ohci_device_isoc_enter: after frame=%d\n",
3456                          le32toh(sc->sc_hcca->hcca_frame_number)));
3457                 ohci_dump_itds(xfer->hcpriv);
3458                 ohci_dump_ed(sed);
3459         }
3460 #endif
3461 }
3462
3463 usbd_status
3464 ohci_device_isoc_start(usbd_xfer_handle xfer)
3465 {
3466         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3467         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
3468         ohci_soft_ed_t *sed;
3469         int s;
3470
3471         DPRINTFN(5,("ohci_device_isoc_start: xfer=%p\n", xfer));
3472
3473         if (sc->sc_dying)
3474                 return (USBD_IOERROR);
3475
3476 #ifdef DIAGNOSTIC
3477         if (xfer->status != USBD_IN_PROGRESS)
3478                 printf("ohci_device_isoc_start: not in progress %p\n", xfer);
3479 #endif
3480
3481         /* XXX anything to do? */
3482
3483         s = splusb();
3484         sed = opipe->sed;  /*  Turn off ED skip-bit to start processing */
3485         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);    /* ED's ITD list.*/
3486         splx(s);
3487
3488         return (USBD_IN_PROGRESS);
3489 }
3490
3491 void
3492 ohci_device_isoc_abort(usbd_xfer_handle xfer)
3493 {
3494         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3495         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
3496         ohci_soft_ed_t *sed;
3497         ohci_soft_itd_t *sitd, *tmp_sitd;
3498         int s,undone,num_sitds;
3499
3500         s = splusb();
3501         opipe->aborting = 1;
3502
3503         DPRINTFN(1,("ohci_device_isoc_abort: xfer=%p\n", xfer));
3504
3505         /* Transfer is already done. */
3506         if (xfer->status != USBD_NOT_STARTED &&
3507             xfer->status != USBD_IN_PROGRESS) {
3508                 splx(s);
3509                 printf("ohci_device_isoc_abort: early return\n");
3510                 return;
3511         }
3512
3513         /* Give xfer the requested abort code. */
3514         xfer->status = USBD_CANCELLED;
3515
3516         sed = opipe->sed;
3517         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* force hardware skip */
3518
3519         num_sitds = 0;
3520         sitd = xfer->hcpriv;
3521 #ifdef DIAGNOSTIC
3522         if (sitd == NULL) {
3523                 splx(s);
3524                 printf("ohci_device_isoc_abort: hcpriv==0\n");
3525                 return;
3526         }
3527 #endif
3528         for (; sitd != NULL && sitd->xfer == xfer; sitd = sitd->nextitd) {
3529                 num_sitds++;
3530 #ifdef DIAGNOSTIC
3531                 DPRINTFN(1,("abort sets done sitd=%p\n", sitd));
3532                 sitd->isdone = 1;
3533 #endif
3534         }
3535
3536         splx(s);
3537
3538         /*
3539          * Each sitd has up to OHCI_ITD_NOFFSET transfers, each can
3540          * take a usb 1ms cycle. Conservatively wait for it to drain.
3541          * Even with DMA done, it can take awhile for the "batch"
3542          * delivery of completion interrupts to occur thru the controller.
3543          */
3544
3545         do {
3546                 usb_delay_ms(&sc->sc_bus, 2*(num_sitds*OHCI_ITD_NOFFSET));
3547
3548                 undone   = 0;
3549                 tmp_sitd = xfer->hcpriv;
3550                 for (; tmp_sitd != NULL && tmp_sitd->xfer == xfer;
3551                     tmp_sitd = tmp_sitd->nextitd) {
3552                         if (OHCI_CC_NO_ERROR ==
3553                             OHCI_ITD_GET_CC(le32toh(tmp_sitd->itd.itd_flags)) &&
3554                             tmp_sitd->flags & OHCI_ITD_ACTIVE &&
3555                             (tmp_sitd->flags & OHCI_ITD_INTFIN) == 0)
3556                                 undone++;
3557                 }
3558         } while( undone != 0 );
3559
3560
3561         s = splusb();
3562
3563         /* Run callback. */
3564         usb_transfer_complete(xfer);
3565
3566         if (sitd != NULL)
3567                 /*
3568                  * Only if there is a `next' sitd in next xfer...
3569                  * unlink this xfer's sitds.
3570                  */
3571                 sed->ed.ed_headp = htole32(sitd->physaddr);
3572         else
3573                 sed->ed.ed_headp = 0;
3574
3575         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* remove hardware skip */
3576
3577         splx(s);
3578 }
3579
3580 void
3581 ohci_device_isoc_done(usbd_xfer_handle xfer)
3582 {
3583         /* This null routine corresponds to non-isoc "done()" routines
3584          * that free the stds associated with an xfer after a completed
3585          * xfer interrupt. However, in the case of isoc transfers, the
3586          * sitds associated with the transfer have already been processed
3587          * and reallocated for the next iteration by
3588          * "ohci_device_isoc_transfer()".
3589          *
3590          * Routine "usb_transfer_complete()" is called at the end of every
3591          * relevant usb interrupt. "usb_transfer_complete()" indirectly
3592          * calls 1) "ohci_device_isoc_transfer()" (which keeps pumping the
3593          * pipeline by setting up the next transfer iteration) and 2) then
3594          * calls "ohci_device_isoc_done()". Isoc transfers have not been
3595          * working for the ohci usb because this routine was trashing the
3596          * xfer set up for the next iteration (thus, only the first
3597          * UGEN_NISOREQS xfers outstanding on an open would work). Perhaps
3598          * this could all be re-factored, but that's another pass...
3599          */
3600 }
3601
3602 usbd_status
3603 ohci_setup_isoc(usbd_pipe_handle pipe)
3604 {
3605         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3606         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3607         struct iso *iso = &opipe->u.iso;
3608         int s;
3609
3610         iso->next = -1;
3611         iso->inuse = 0;
3612
3613         s = splusb();
3614         ohci_add_ed(opipe->sed, sc->sc_isoc_head);
3615         splx(s);
3616
3617         return (USBD_NORMAL_COMPLETION);
3618 }
3619
3620 void
3621 ohci_device_isoc_close(usbd_pipe_handle pipe)
3622 {
3623         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3624         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3625         ohci_soft_ed_t *sed;
3626
3627         DPRINTF(("ohci_device_isoc_close: pipe=%p\n", pipe));
3628
3629         sed = opipe->sed;
3630         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* Stop device. */
3631
3632         ohci_close_pipe(pipe, sc->sc_isoc_head); /* Stop isoc list, free ED.*/
3633
3634         /* up to NISOREQs xfers still outstanding. */
3635
3636 #ifdef DIAGNOSTIC
3637         opipe->tail.itd->isdone = 1;
3638 #endif
3639         ohci_free_sitd(sc, opipe->tail.itd);    /* Next `avail free' sitd.*/
3640 }