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