sys/bus/usb/uhci.c

   1 /*      $NetBSD: uhci.c,v 1.170 2003/02/19 01:35:04 augustss Exp $      */
   2 /*      $FreeBSD: src/sys/dev/usb/uhci.c,v 1.162.2.1 2006/03/01 01:59:04 iedowse Exp $  */
   3 /*      $DragonFly: src/sys/bus/usb/uhci.c,v 1.25 2007/06/29 22:56:31 hasso Exp $       */
   4
   5 /*      Also already incorporated from NetBSD:
   6  *      $NetBSD: uhci.c,v 1.172 2003/02/23 04:19:26 simonb Exp $
   7  *      $NetBSD: uhci.c,v 1.173 2003/05/13 04:41:59 gson Exp $
   8  *      $NetBSD: uhci.c,v 1.175 2003/09/12 16:18:08 mycroft Exp $
   9  *      $NetBSD: uhci.c,v 1.176 2003/11/04 19:11:21 mycroft Exp $
  10  *      $NetBSD: uhci.c,v 1.177 2003/12/29 08:17:10 toshii Exp $
  11  *      $NetBSD: uhci.c,v 1.178 2004/03/02 16:32:05 martin Exp $
  12  *      $NetBSD: uhci.c,v 1.180 2004/07/17 20:12:03 mycroft Exp $
  13  */
  14
  15 /*
  16  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  17  * All rights reserved.
  18  *
  19  * This code is derived from software contributed to The NetBSD Foundation
  20  * by Lennart Augustsson (lennart@augustsson.net) at
  21  * Carlstedt Research & Technology.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the above copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *        This product includes software developed by the NetBSD
  34  *        Foundation, Inc. and its contributors.
  35  * 4. Neither the name of The NetBSD Foundation nor the names of its
  36  *    contributors may be used to endorse or promote products derived
  37  *    from this software without specific prior written permission.
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  40  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  41  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  43  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  44  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  45  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  46  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  47  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  49  * POSSIBILITY OF SUCH DAMAGE.
  50  */
  51
  52 /*
  53  * USB Universal Host Controller driver.
  54  * Handles e.g. PIIX3 and PIIX4.
  55  *
  56  * UHCI spec: http://developer.intel.com/design/USB/UHCI11D.htm
  57  * USB spec: http://www.usb.org/developers/docs/usbspec.zip
  58  * PIIXn spec: ftp://download.intel.com/design/intarch/datashts/29055002.pdf
  59  *             ftp://download.intel.com/design/intarch/datashts/29056201.pdf
  60  */
  61
  62 #include <sys/param.h>
  63 #include <sys/systm.h>
  64 #include <sys/kernel.h>
  65 #include <sys/malloc.h>
  66 #include <sys/endian.h>
  67 #include <sys/module.h>
  68 #include <sys/bus.h>
  69 #if defined(DIAGNOSTIC) && defined(__i386__)
  70 #include <machine/cpu.h>
  71 #endif
  72 #include <sys/proc.h>
  73 #include <sys/queue.h>
  74 #include <sys/sysctl.h>
  75 #include <sys/thread2.h>
  76
  77 #include <machine/endian.h>
  78
  79 #include <bus/usb/usb.h>
  80 #include <bus/usb/usbdi.h>
  81 #include <bus/usb/usbdivar.h>
  82 #include <bus/usb/usb_mem.h>
  83 #include <bus/usb/usb_quirks.h>
  84
  85 #include <bus/usb/uhcireg.h>
  86 #include <bus/usb/uhcivar.h>
  87
  88 /* Use bandwidth reclamation for control transfers. Some devices choke on it. */
  89 /*#define UHCI_CTL_LOOP */
  90
  91 #define delay(d)                DELAY(d)
  92
  93 #define MS_TO_TICKS(ms) ((ms) * hz / 1000)
  94
  95 #ifdef USB_DEBUG
  96 uhci_softc_t *thesc;
  97 #define DPRINTF(x)      if (uhcidebug) kprintf x
  98 #define DPRINTFN(n,x)   if (uhcidebug>(n)) kprintf x
  99 int uhcidebug = 0;
 100 int uhcinoloop = 0;
 101 SYSCTL_NODE(_hw_usb, OID_AUTO, uhci, CTLFLAG_RW, 0, "USB uhci");
 102 SYSCTL_INT(_hw_usb_uhci, OID_AUTO, debug, CTLFLAG_RW,
 103            &uhcidebug, 0, "uhci debug level");
 104 SYSCTL_INT(_hw_usb_uhci, OID_AUTO, loop, CTLFLAG_RW,
 105            &uhcinoloop, 0, "uhci noloop");
 106 #define bitmask_snprintf(q,f,b,l) ksnprintf((b), (l), "%b", (q), (f))
 107 #else
 108 #define DPRINTF(x)
 109 #define DPRINTFN(n,x)
 110 #endif
 111
 112 struct uhci_pipe {
 113         struct usbd_pipe pipe;
 114         int nexttoggle;
 115
 116         u_char aborting;
 117         usbd_xfer_handle abortstart, abortend;
 118
 119         /* Info needed for different pipe kinds. */
 120         union {
 121                 /* Control pipe */
 122                 struct {
 123                         uhci_soft_qh_t *sqh;
 124                         usb_dma_t reqdma;
 125                         uhci_soft_td_t *setup, *stat;
 126                         u_int length;
 127                 } ctl;
 128                 /* Interrupt pipe */
 129                 struct {
 130                         int npoll;
 131                         int isread;
 132                         uhci_soft_qh_t **qhs;
 133                 } intr;
 134                 /* Bulk pipe */
 135                 struct {
 136                         uhci_soft_qh_t *sqh;
 137                         u_int length;
 138                         int isread;
 139                 } bulk;
 140                 /* Iso pipe */
 141                 struct iso {
 142                         uhci_soft_td_t **stds;
 143                         int next, inuse;
 144                 } iso;
 145         } u;
 146 };
 147
 148 static void             uhci_globalreset(uhci_softc_t *);
 149 static usbd_status      uhci_portreset(uhci_softc_t*, int);
 150 static void             uhci_reset(uhci_softc_t *);
 151 static usbd_status      uhci_run(uhci_softc_t *, int run);
 152 static uhci_soft_td_t  *uhci_alloc_std(uhci_softc_t *);
 153 static void             uhci_free_std(uhci_softc_t *, uhci_soft_td_t *);
 154 static uhci_soft_qh_t  *uhci_alloc_sqh(uhci_softc_t *);
 155 static void             uhci_free_sqh(uhci_softc_t *, uhci_soft_qh_t *);
 156 #if 0
 157 static void             uhci_enter_ctl_q(uhci_softc_t *, uhci_soft_qh_t *,
 158                                          uhci_intr_info_t *);
 159 static void             uhci_exit_ctl_q(uhci_softc_t *, uhci_soft_qh_t *);
 160 #endif
 161
 162 static void             uhci_free_std_chain(uhci_softc_t *,
 163                                             uhci_soft_td_t *, uhci_soft_td_t *);
 164 static usbd_status      uhci_alloc_std_chain(struct uhci_pipe *,
 165                             uhci_softc_t *, int, int, u_int16_t, usb_dma_t *,
 166                             uhci_soft_td_t **, uhci_soft_td_t **);
 167 static void             uhci_poll_hub(void *);
 168 static void             uhci_waitintr(uhci_softc_t *, usbd_xfer_handle);
 169 static void             uhci_check_intr(uhci_softc_t *, uhci_intr_info_t *);
 170 static void             uhci_idone(uhci_intr_info_t *);
 171
 172 static void             uhci_abort_xfer(usbd_xfer_handle, usbd_status status);
 173
 174 static void             uhci_timeout(void *);
 175 static void             uhci_timeout_task(void *);
 176 static void             uhci_add_ls_ctrl(uhci_softc_t *, uhci_soft_qh_t *);
 177 static void             uhci_add_hs_ctrl(uhci_softc_t *, uhci_soft_qh_t *);
 178 static void             uhci_add_bulk(uhci_softc_t *, uhci_soft_qh_t *);
 179 static void             uhci_remove_ls_ctrl(uhci_softc_t *,uhci_soft_qh_t *);
 180 static void             uhci_remove_hs_ctrl(uhci_softc_t *,uhci_soft_qh_t *);
 181 static void             uhci_remove_bulk(uhci_softc_t *,uhci_soft_qh_t *);
 182 static int              uhci_str(usb_string_descriptor_t *, int, char *);
 183 static void             uhci_add_loop(uhci_softc_t *sc);
 184 static void             uhci_rem_loop(uhci_softc_t *sc);
 185
 186 static usbd_status      uhci_setup_isoc(usbd_pipe_handle pipe);
 187 static void             uhci_device_isoc_enter(usbd_xfer_handle);
 188
 189 static usbd_status      uhci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t);
 190 static void             uhci_freem(struct usbd_bus *, usb_dma_t *);
 191
 192 static usbd_xfer_handle uhci_allocx(struct usbd_bus *);
 193 static void             uhci_freex(struct usbd_bus *, usbd_xfer_handle);
 194
 195 static usbd_status      uhci_device_ctrl_transfer(usbd_xfer_handle);
 196 static usbd_status      uhci_device_ctrl_start(usbd_xfer_handle);
 197 static void             uhci_device_ctrl_abort(usbd_xfer_handle);
 198 static void             uhci_device_ctrl_close(usbd_pipe_handle);
 199 static void             uhci_device_ctrl_done(usbd_xfer_handle);
 200
 201 static usbd_status      uhci_device_intr_transfer(usbd_xfer_handle);
 202 static usbd_status      uhci_device_intr_start(usbd_xfer_handle);
 203 static void             uhci_device_intr_abort(usbd_xfer_handle);
 204 static void             uhci_device_intr_close(usbd_pipe_handle);
 205 static void             uhci_device_intr_done(usbd_xfer_handle);
 206
 207 static usbd_status      uhci_device_bulk_transfer(usbd_xfer_handle);
 208 static usbd_status      uhci_device_bulk_start(usbd_xfer_handle);
 209 static void             uhci_device_bulk_abort(usbd_xfer_handle);
 210 static void             uhci_device_bulk_close(usbd_pipe_handle);
 211 static void             uhci_device_bulk_done(usbd_xfer_handle);
 212
 213 static usbd_status      uhci_device_isoc_transfer(usbd_xfer_handle);
 214 static usbd_status      uhci_device_isoc_start(usbd_xfer_handle);
 215 static void             uhci_device_isoc_abort(usbd_xfer_handle);
 216 static void             uhci_device_isoc_close(usbd_pipe_handle);
 217 static void             uhci_device_isoc_done(usbd_xfer_handle);
 218
 219 static usbd_status      uhci_root_ctrl_transfer(usbd_xfer_handle);
 220 static usbd_status      uhci_root_ctrl_start(usbd_xfer_handle);
 221 static void             uhci_root_ctrl_abort(usbd_xfer_handle);
 222 static void             uhci_root_ctrl_close(usbd_pipe_handle);
 223 static void             uhci_root_ctrl_done(usbd_xfer_handle);
 224
 225 static usbd_status      uhci_root_intr_transfer(usbd_xfer_handle);
 226 static usbd_status      uhci_root_intr_start(usbd_xfer_handle);
 227 static void             uhci_root_intr_abort(usbd_xfer_handle);
 228 static void             uhci_root_intr_close(usbd_pipe_handle);
 229 static void             uhci_root_intr_done(usbd_xfer_handle);
 230
 231 static usbd_status      uhci_open(usbd_pipe_handle);
 232 static void             uhci_poll(struct usbd_bus *);
 233 static void             uhci_softintr(void *);
 234
 235 static usbd_status      uhci_device_request(usbd_xfer_handle xfer);
 236
 237 static void             uhci_add_intr(uhci_softc_t *, uhci_soft_qh_t *);
 238 static void             uhci_remove_intr(uhci_softc_t *, uhci_soft_qh_t *);
 239 static usbd_status      uhci_device_setintr(uhci_softc_t *sc,
 240                             struct uhci_pipe *pipe, int ival);
 241
 242 static void             uhci_device_clear_toggle(usbd_pipe_handle pipe);
 243 static void             uhci_noop(usbd_pipe_handle pipe);
 244
 245 static __inline uhci_soft_qh_t *uhci_find_prev_qh(uhci_soft_qh_t *,
 246                                                   uhci_soft_qh_t *);
 247
 248 #ifdef USB_DEBUG
 249 static void             uhci_dump_all(uhci_softc_t *);
 250 static void             uhci_dumpregs(uhci_softc_t *);
 251 static void             uhci_dump_qhs(uhci_soft_qh_t *);
 252 static void             uhci_dump_qh(uhci_soft_qh_t *);
 253 static void             uhci_dump_tds(uhci_soft_td_t *);
 254 static void             uhci_dump_td(uhci_soft_td_t *);
 255 static void             uhci_dump_ii(uhci_intr_info_t *ii);
 256 void                    uhci_dump(void);
 257 #endif
 258
 259 #define UBARR(sc) bus_space_barrier((sc)->iot, (sc)->ioh, 0, (sc)->sc_size, \
 260                         BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
 261 #define UWRITE1(sc, r, x) \
 262  do { UBARR(sc); bus_space_write_1((sc)->iot, (sc)->ioh, (r), (x)); \
 263  } while (/*CONSTCOND*/0)
 264 #define UWRITE2(sc, r, x) \
 265  do { UBARR(sc); bus_space_write_2((sc)->iot, (sc)->ioh, (r), (x)); \
 266  } while (/*CONSTCOND*/0)
 267 #define UWRITE4(sc, r, x) \
 268  do { UBARR(sc); bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x)); \
 269  } while (/*CONSTCOND*/0)
 270 #define UREAD1(sc, r) (UBARR(sc), bus_space_read_1((sc)->iot, (sc)->ioh, (r)))
 271 #define UREAD2(sc, r) (UBARR(sc), bus_space_read_2((sc)->iot, (sc)->ioh, (r)))
 272 #define UREAD4(sc, r) (UBARR(sc), bus_space_read_4((sc)->iot, (sc)->ioh, (r)))
 273
 274 #define UHCICMD(sc, cmd) UWRITE2(sc, UHCI_CMD, cmd)
 275 #define UHCISTS(sc) UREAD2(sc, UHCI_STS)
 276
 277 #define UHCI_RESET_TIMEOUT 100  /* ms, reset timeout */
 278
 279 #define UHCI_CURFRAME(sc) (UREAD2(sc, UHCI_FRNUM) & UHCI_FRNUM_MASK)
 280
 281 #define UHCI_INTR_ENDPT 1
 282
 283 struct usbd_bus_methods uhci_bus_methods = {
 284         uhci_open,
 285         uhci_softintr,
 286         uhci_poll,
 287         uhci_allocm,
 288         uhci_freem,
 289         uhci_allocx,
 290         uhci_freex,
 291 };
 292
 293 struct usbd_pipe_methods uhci_root_ctrl_methods = {
 294         uhci_root_ctrl_transfer,
 295         uhci_root_ctrl_start,
 296         uhci_root_ctrl_abort,
 297         uhci_root_ctrl_close,
 298         uhci_noop,
 299         uhci_root_ctrl_done,
 300 };
 301
 302 struct usbd_pipe_methods uhci_root_intr_methods = {
 303         uhci_root_intr_transfer,
 304         uhci_root_intr_start,
 305         uhci_root_intr_abort,
 306         uhci_root_intr_close,
 307         uhci_noop,
 308         uhci_root_intr_done,
 309 };
 310
 311 struct usbd_pipe_methods uhci_device_ctrl_methods = {
 312         uhci_device_ctrl_transfer,
 313         uhci_device_ctrl_start,
 314         uhci_device_ctrl_abort,
 315         uhci_device_ctrl_close,
 316         uhci_noop,
 317         uhci_device_ctrl_done,
 318 };
 319
 320 struct usbd_pipe_methods uhci_device_intr_methods = {
 321         uhci_device_intr_transfer,
 322         uhci_device_intr_start,
 323         uhci_device_intr_abort,
 324         uhci_device_intr_close,
 325         uhci_device_clear_toggle,
 326         uhci_device_intr_done,
 327 };
 328
 329 struct usbd_pipe_methods uhci_device_bulk_methods = {
 330         uhci_device_bulk_transfer,
 331         uhci_device_bulk_start,
 332         uhci_device_bulk_abort,
 333         uhci_device_bulk_close,
 334         uhci_device_clear_toggle,
 335         uhci_device_bulk_done,
 336 };
 337
 338 struct usbd_pipe_methods uhci_device_isoc_methods = {
 339         uhci_device_isoc_transfer,
 340         uhci_device_isoc_start,
 341         uhci_device_isoc_abort,
 342         uhci_device_isoc_close,
 343         uhci_noop,
 344         uhci_device_isoc_done,
 345 };
 346
 347 #define uhci_add_intr_info(sc, ii) \
 348         LIST_INSERT_HEAD(&(sc)->sc_intrhead, (ii), list)
 349 #define uhci_del_intr_info(ii) \
 350         do { \
 351                 LIST_REMOVE((ii), list); \
 352                 (ii)->list.le_prev = NULL; \
 353         } while (0)
 354 #define uhci_active_intr_info(ii) ((ii)->list.le_prev != NULL)
 355
 356 static __inline uhci_soft_qh_t *
 357 uhci_find_prev_qh(uhci_soft_qh_t *pqh, uhci_soft_qh_t *sqh)
 358 {
 359         DPRINTFN(15,("uhci_find_prev_qh: pqh=%p sqh=%p\n", pqh, sqh));
 360
 361         for (; pqh->hlink != sqh; pqh = pqh->hlink) {
 362 #if defined(DIAGNOSTIC) || defined(USB_DEBUG)
 363                 if (le32toh(pqh->qh.qh_hlink) & UHCI_PTR_T) {
 364                         kprintf("uhci_find_prev_qh: QH not found\n");
 365                         return (NULL);
 366                 }
 367 #endif
 368         }
 369         return (pqh);
 370 }
 371
 372 void
 373 uhci_globalreset(uhci_softc_t *sc)
 374 {
 375         UHCICMD(sc, UHCI_CMD_GRESET);   /* global reset */
 376         usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY); /* wait a little */
 377         UHCICMD(sc, 0);                 /* do nothing */
 378 }
 379
 380 usbd_status
 381 uhci_init(uhci_softc_t *sc)
 382 {
 383         usbd_status err;
 384         int i, j;
 385         uhci_soft_qh_t *clsqh, *chsqh, *bsqh, *sqh, *lsqh;
 386         uhci_soft_td_t *std;
 387
 388         DPRINTFN(1,("uhci_init: start\n"));
 389
 390 #ifdef USB_DEBUG
 391         thesc = sc;
 392
 393         if (uhcidebug > 2)
 394                 uhci_dumpregs(sc);
 395 #endif
 396
 397         UWRITE2(sc, UHCI_INTR, 0);              /* disable interrupts */
 398         uhci_globalreset(sc);                   /* reset the controller */
 399         uhci_reset(sc);
 400
 401         /* Allocate and initialize real frame array. */
 402         err = usb_allocmem(&sc->sc_bus,
 403                   UHCI_FRAMELIST_COUNT * sizeof(uhci_physaddr_t),
 404                   UHCI_FRAMELIST_ALIGN, &sc->sc_dma);
 405         if (err)
 406                 return (err);
 407         sc->sc_pframes = KERNADDR(&sc->sc_dma, 0);
 408         UWRITE2(sc, UHCI_FRNUM, 0);             /* set frame number to 0 */
 409         UWRITE4(sc, UHCI_FLBASEADDR, DMAADDR(&sc->sc_dma, 0)); /* set frame list*/
 410
 411         /*
 412          * Allocate a TD, inactive, that hangs from the last QH.
 413          * This is to avoid a bug in the PIIX that makes it run berserk
 414          * otherwise.
 415          */
 416         std = uhci_alloc_std(sc);
 417         if (std == NULL)
 418                 return (USBD_NOMEM);
 419         std->link.std = NULL;
 420         std->td.td_link = htole32(UHCI_PTR_T);
 421         std->td.td_status = htole32(0); /* inactive */
 422         std->td.td_token = htole32(0);
 423         std->td.td_buffer = htole32(0);
 424
 425         /* Allocate the dummy QH marking the end and used for looping the QHs.*/
 426         lsqh = uhci_alloc_sqh(sc);
 427         if (lsqh == NULL)
 428                 return (USBD_NOMEM);
 429         lsqh->hlink = NULL;
 430         lsqh->qh.qh_hlink = htole32(UHCI_PTR_T);        /* end of QH chain */
 431         lsqh->elink = std;
 432         lsqh->qh.qh_elink = htole32(std->physaddr | UHCI_PTR_TD);
 433         sc->sc_last_qh = lsqh;
 434
 435         /* Allocate the dummy QH where bulk traffic will be queued. */
 436         bsqh = uhci_alloc_sqh(sc);
 437         if (bsqh == NULL)
 438                 return (USBD_NOMEM);
 439         bsqh->hlink = lsqh;
 440         bsqh->qh.qh_hlink = htole32(lsqh->physaddr | UHCI_PTR_QH);
 441         bsqh->elink = NULL;
 442         bsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 443         sc->sc_bulk_start = sc->sc_bulk_end = bsqh;
 444
 445         /* Allocate dummy QH where high speed control traffic will be queued. */
 446         chsqh = uhci_alloc_sqh(sc);
 447         if (chsqh == NULL)
 448                 return (USBD_NOMEM);
 449         chsqh->hlink = bsqh;
 450         chsqh->qh.qh_hlink = htole32(bsqh->physaddr | UHCI_PTR_QH);
 451         chsqh->elink = NULL;
 452         chsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 453         sc->sc_hctl_start = sc->sc_hctl_end = chsqh;
 454
 455         /* Allocate dummy QH where control traffic will be queued. */
 456         clsqh = uhci_alloc_sqh(sc);
 457         if (clsqh == NULL)
 458                 return (USBD_NOMEM);
 459         clsqh->hlink = bsqh;
 460         clsqh->qh.qh_hlink = htole32(chsqh->physaddr | UHCI_PTR_QH);
 461         clsqh->elink = NULL;
 462         clsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 463         sc->sc_lctl_start = sc->sc_lctl_end = clsqh;
 464
 465         /*
 466          * Make all (virtual) frame list pointers point to the interrupt
 467          * queue heads and the interrupt queue heads at the control
 468          * queue head and point the physical frame list to the virtual.
 469          */
 470         for(i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
 471                 std = uhci_alloc_std(sc);
 472                 sqh = uhci_alloc_sqh(sc);
 473                 if (std == NULL || sqh == NULL)
 474                         return (USBD_NOMEM);
 475                 std->link.sqh = sqh;
 476
 477                 std->td.td_link = htole32(sqh->physaddr | UHCI_PTR_QH);
 478                 std->td.td_status = htole32(UHCI_TD_IOS); /* iso, inactive */
 479                 std->td.td_token = htole32(0);
 480                 std->td.td_buffer = htole32(0);
 481                 sqh->hlink = clsqh;
 482                 sqh->qh.qh_hlink = htole32(clsqh->physaddr | UHCI_PTR_QH);
 483                 sqh->elink = NULL;
 484                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
 485                 sc->sc_vframes[i].htd = std;
 486                 sc->sc_vframes[i].etd = std;
 487                 sc->sc_vframes[i].hqh = sqh;
 488                 sc->sc_vframes[i].eqh = sqh;
 489                 for (j = i;
 490                      j < UHCI_FRAMELIST_COUNT;
 491                      j += UHCI_VFRAMELIST_COUNT) {
 492                         sc->sc_pframes[j] = htole32(std->physaddr);
 493                 }
 494         }
 495
 496         LIST_INIT(&sc->sc_intrhead);
 497
 498         STAILQ_INIT(&sc->sc_free_xfers);
 499
 500         callout_init(&sc->sc_poll_handle);
 501
 502         /* Set up the bus struct. */
 503         sc->sc_bus.methods = &uhci_bus_methods;
 504         sc->sc_bus.pipe_size = sizeof(struct uhci_pipe);
 505
 506         DPRINTFN(1,("uhci_init: enabling\n"));
 507         UWRITE2(sc, UHCI_INTR, UHCI_INTR_TOCRCIE | UHCI_INTR_RIE |
 508                 UHCI_INTR_IOCE | UHCI_INTR_SPIE);       /* enable interrupts */
 509
 510         UHCICMD(sc, UHCI_CMD_MAXP); /* Assume 64 byte packets at frame end */
 511
 512         return (uhci_run(sc, 1));               /* and here we go... */
 513 }
 514
 515 int
 516 uhci_detach(struct uhci_softc *sc, int flags)
 517 {
 518         usbd_xfer_handle xfer;
 519         int rv = 0;
 520
 521         UWRITE2(sc, UHCI_INTR, 0);              /* disable interrupts */
 522         uhci_run(sc, 0);
 523
 524         /* Free all xfers associated with this HC. */
 525         for (;;) {
 526                 xfer = STAILQ_FIRST(&sc->sc_free_xfers);
 527                 if (xfer == NULL)
 528                         break;
 529                 STAILQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
 530                 kfree(xfer, M_USB);
 531         }
 532
 533         /* XXX free other data structures XXX */
 534         usb_freemem(&sc->sc_bus, &sc->sc_dma);
 535
 536         return (rv);
 537 }
 538
 539 usbd_status
 540 uhci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
 541 {
 542         return (usb_allocmem(bus, size, 0, dma));
 543 }
 544
 545 void
 546 uhci_freem(struct usbd_bus *bus, usb_dma_t *dma)
 547 {
 548         usb_freemem(bus, dma);
 549 }
 550
 551 usbd_xfer_handle
 552 uhci_allocx(struct usbd_bus *bus)
 553 {
 554         struct uhci_softc *sc = (struct uhci_softc *)bus;
 555         usbd_xfer_handle xfer;
 556
 557         xfer = STAILQ_FIRST(&sc->sc_free_xfers);
 558         if (xfer != NULL) {
 559                 STAILQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
 560 #ifdef DIAGNOSTIC
 561                 if (xfer->busy_free != XFER_FREE) {
 562                         kprintf("uhci_allocx: xfer=%p not free, 0x%08x\n", xfer,
 563                                xfer->busy_free);
 564                 }
 565 #endif
 566         } else {
 567                 xfer = kmalloc(sizeof(struct uhci_xfer), M_USB, M_INTWAIT);
 568         }
 569         if (xfer != NULL) {
 570                 memset(xfer, 0, sizeof (struct uhci_xfer));
 571                 UXFER(xfer)->iinfo.sc = sc;
 572                 usb_init_task(&UXFER(xfer)->abort_task, uhci_timeout_task,
 573                     xfer);
 574                 UXFER(xfer)->uhci_xfer_flags = 0;
 575 #ifdef DIAGNOSTIC
 576                 UXFER(xfer)->iinfo.isdone = 1;
 577                 xfer->busy_free = XFER_BUSY;
 578 #endif
 579         }
 580         return (xfer);
 581 }
 582
 583 void
 584 uhci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
 585 {
 586         struct uhci_softc *sc = (struct uhci_softc *)bus;
 587
 588 #ifdef DIAGNOSTIC
 589         if (xfer->busy_free != XFER_BUSY) {
 590                 kprintf("uhci_freex: xfer=%p not busy, 0x%08x\n", xfer,
 591                        xfer->busy_free);
 592                 return;
 593         }
 594         xfer->busy_free = XFER_FREE;
 595         if (!UXFER(xfer)->iinfo.isdone) {
 596                 kprintf("uhci_freex: !isdone\n");
 597                 return;
 598         }
 599 #endif
 600         STAILQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
 601 }
 602
 603 /*
 604  * Shut down the controller when the system is going down.
 605  */
 606 void
 607 uhci_shutdown(void *v)
 608 {
 609         uhci_softc_t *sc = v;
 610
 611         DPRINTF(("uhci_shutdown: stopping the HC\n"));
 612         uhci_run(sc, 0); /* stop the controller */
 613 }
 614
 615 /*
 616  * Handle suspend/resume.
 617  *
 618  * We need to switch to polling mode here, because this routine is
 619  * called from an interrupt context.  This is all right since we
 620  * are almost suspended anyway.
 621  */
 622 void
 623 uhci_power(int why, void *v)
 624 {
 625         uhci_softc_t *sc = v;
 626         int cmd;
 627
 628         crit_enter();
 629         cmd = UREAD2(sc, UHCI_CMD);
 630
 631         DPRINTF(("uhci_power: sc=%p, why=%d (was %d), cmd=0x%x\n",
 632                  sc, why, sc->sc_suspend, cmd));
 633
 634         if (why != PWR_RESUME) {
 635 #ifdef USB_DEBUG
 636                 if (uhcidebug > 2)
 637                         uhci_dumpregs(sc);
 638 #endif
 639                 if (sc->sc_intr_xfer != NULL)
 640                         callout_stop(&sc->sc_poll_handle);
 641                 sc->sc_bus.use_polling++;
 642                 uhci_run(sc, 0); /* stop the controller */
 643
 644                 /* save some state if BIOS doesn't */
 645                 sc->sc_saved_frnum = UREAD2(sc, UHCI_FRNUM);
 646                 sc->sc_saved_sof = UREAD1(sc, UHCI_SOF);
 647
 648                 UWRITE2(sc, UHCI_INTR, 0); /* disable intrs */
 649
 650                 UHCICMD(sc, cmd | UHCI_CMD_EGSM); /* enter global suspend */
 651                 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
 652                 sc->sc_suspend = why;
 653                 sc->sc_bus.use_polling--;
 654                 DPRINTF(("uhci_power: cmd=0x%x\n", UREAD2(sc, UHCI_CMD)));
 655         } else {
 656 #ifdef DIAGNOSTIC
 657                 if (sc->sc_suspend == PWR_RESUME)
 658                         kprintf("uhci_power: weird, resume without suspend.\n");
 659 #endif
 660                 sc->sc_bus.use_polling++;
 661                 sc->sc_suspend = why;
 662                 UWRITE2(sc, UHCI_INTR, 0);      /* disable interrupts */
 663                 uhci_globalreset(sc);           /* reset the controller */
 664                 uhci_reset(sc);
 665                 if (cmd & UHCI_CMD_RS)
 666                         uhci_run(sc, 0); /* in case BIOS has started it */
 667
 668                 uhci_globalreset(sc);
 669                 uhci_reset(sc);
 670
 671                 /* restore saved state */
 672                 UWRITE4(sc, UHCI_FLBASEADDR, DMAADDR(&sc->sc_dma, 0));
 673                 UWRITE2(sc, UHCI_FRNUM, sc->sc_saved_frnum);
 674                 UWRITE1(sc, UHCI_SOF, sc->sc_saved_sof);
 675
 676                 UHCICMD(sc, cmd | UHCI_CMD_FGR); /* force global resume */
 677                 usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
 678                 UHCICMD(sc, cmd & ~UHCI_CMD_EGSM); /* back to normal */
 679                 UWRITE2(sc, UHCI_INTR, UHCI_INTR_TOCRCIE | UHCI_INTR_RIE |
 680                         UHCI_INTR_IOCE | UHCI_INTR_SPIE); /* re-enable intrs */
 681                 UHCICMD(sc, UHCI_CMD_MAXP);
 682                 uhci_run(sc, 1); /* and start traffic again */
 683                 usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
 684                 sc->sc_bus.use_polling--;
 685                 if (sc->sc_intr_xfer != NULL)
 686                         callout_reset(&sc->sc_poll_handle, sc->sc_ival,
 687                                     uhci_poll_hub, sc->sc_intr_xfer);
 688 #ifdef USB_DEBUG
 689                 if (uhcidebug > 2)
 690                         uhci_dumpregs(sc);
 691 #endif
 692         }
 693         crit_exit();
 694 }
 695
 696 #ifdef USB_DEBUG
 697 static void
 698 uhci_dumpregs(uhci_softc_t *sc)
 699 {
 700         DPRINTFN(-1,("%s regs: cmd=%04x, sts=%04x, intr=%04x, frnum=%04x, "
 701                      "flbase=%08x, sof=%04x, portsc1=%04x, portsc2=%04x\n",
 702                      device_get_nameunit(sc->sc_bus.bdev),
 703                      UREAD2(sc, UHCI_CMD),
 704                      UREAD2(sc, UHCI_STS),
 705                      UREAD2(sc, UHCI_INTR),
 706                      UREAD2(sc, UHCI_FRNUM),
 707                      UREAD4(sc, UHCI_FLBASEADDR),
 708                      UREAD1(sc, UHCI_SOF),
 709                      UREAD2(sc, UHCI_PORTSC1),
 710                      UREAD2(sc, UHCI_PORTSC2)));
 711 }
 712
 713 void
 714 uhci_dump_td(uhci_soft_td_t *p)
 715 {
 716         char sbuf[128], sbuf2[128];
 717
 718         DPRINTFN(-1,("TD(%p) at %08lx = link=0x%08lx status=0x%08lx "
 719                      "token=0x%08lx buffer=0x%08lx\n",
 720                      p, (long)p->physaddr,
 721                      (long)le32toh(p->td.td_link),
 722                      (long)le32toh(p->td.td_status),
 723                      (long)le32toh(p->td.td_token),
 724                      (long)le32toh(p->td.td_buffer)));
 725
 726         bitmask_snprintf((u_int32_t)le32toh(p->td.td_link), "\20\1T\2Q\3VF",
 727                          sbuf, sizeof(sbuf));
 728         bitmask_snprintf((u_int32_t)le32toh(p->td.td_status),
 729                          "\20\22BITSTUFF\23CRCTO\24NAK\25BABBLE\26DBUFFER\27"
 730                          "STALLED\30ACTIVE\31IOC\32ISO\33LS\36SPD",
 731                          sbuf2, sizeof(sbuf2));
 732
 733         DPRINTFN(-1,("  %s %s,errcnt=%d,actlen=%d pid=%02x,addr=%d,endpt=%d,"
 734                      "D=%d,maxlen=%d\n", sbuf, sbuf2,
 735                      UHCI_TD_GET_ERRCNT(le32toh(p->td.td_status)),
 736                      UHCI_TD_GET_ACTLEN(le32toh(p->td.td_status)),
 737                      UHCI_TD_GET_PID(le32toh(p->td.td_token)),
 738                      UHCI_TD_GET_DEVADDR(le32toh(p->td.td_token)),
 739                      UHCI_TD_GET_ENDPT(le32toh(p->td.td_token)),
 740                      UHCI_TD_GET_DT(le32toh(p->td.td_token)),
 741                      UHCI_TD_GET_MAXLEN(le32toh(p->td.td_token))));
 742 }
 743
 744 void
 745 uhci_dump_qh(uhci_soft_qh_t *sqh)
 746 {
 747         DPRINTFN(-1,("QH(%p) at %08x: hlink=%08x elink=%08x\n", sqh,
 748                      (int)sqh->physaddr, le32toh(sqh->qh.qh_hlink),
 749                      le32toh(sqh->qh.qh_elink)));
 750 }
 751
 752 #if 1
 753 void
 754 uhci_dump(void)
 755 {
 756         uhci_dump_all(thesc);
 757 }
 758 #endif
 759
 760 void
 761 uhci_dump_all(uhci_softc_t *sc)
 762 {
 763         uhci_dumpregs(sc);
 764         kprintf("intrs=%d\n", sc->sc_bus.no_intrs);
 765         /*kprintf("framelist[i].link = %08x\n", sc->sc_framelist[0].link);*/
 766         uhci_dump_qh(sc->sc_lctl_start);
 767 }
 768
 769 void
 770 uhci_dump_qhs(uhci_soft_qh_t *sqh)
 771 {
 772         uhci_dump_qh(sqh);
 773
 774         /* uhci_dump_qhs displays all the QHs and TDs from the given QH onwards
 775          * Traverses sideways first, then down.
 776          *
 777          * QH1
 778          * QH2
 779          * No QH
 780          * TD2.1
 781          * TD2.2
 782          * TD1.1
 783          * etc.
 784          *
 785          * TD2.x being the TDs queued at QH2 and QH1 being referenced from QH1.
 786          */
 787
 788
 789         if (sqh->hlink != NULL && !(le32toh(sqh->qh.qh_hlink) & UHCI_PTR_T))
 790                 uhci_dump_qhs(sqh->hlink);
 791         else
 792                 DPRINTF(("No QH\n"));
 793
 794         if (sqh->elink != NULL && !(le32toh(sqh->qh.qh_elink) & UHCI_PTR_T))
 795                 uhci_dump_tds(sqh->elink);
 796         else
 797                 DPRINTF(("No TD\n"));
 798 }
 799
 800 void
 801 uhci_dump_tds(uhci_soft_td_t *std)
 802 {
 803         uhci_soft_td_t *td;
 804
 805         for(td = std; td != NULL; td = td->link.std) {
 806                 uhci_dump_td(td);
 807
 808                 /* Check whether the link pointer in this TD marks
 809                  * the link pointer as end of queue. This avoids
 810                  * printing the free list in case the queue/TD has
 811                  * already been moved there (seatbelt).
 812                  */
 813                 if (le32toh(td->td.td_link) & UHCI_PTR_T ||
 814                     le32toh(td->td.td_link) == 0)
 815                         break;
 816         }
 817 }
 818
 819 static void
 820 uhci_dump_ii(uhci_intr_info_t *ii)
 821 {
 822         usbd_pipe_handle pipe;
 823         usb_endpoint_descriptor_t *ed;
 824         usbd_device_handle dev;
 825
 826 #ifdef DIAGNOSTIC
 827 #define DONE ii->isdone
 828 #else
 829 #define DONE 0
 830 #endif
 831         if (ii == NULL) {
 832                 kprintf("ii NULL\n");
 833                 return;
 834         }
 835         if (ii->xfer == NULL) {
 836                 kprintf("ii %p: done=%d xfer=NULL\n",
 837                        ii, DONE);
 838                 return;
 839         }
 840         pipe = ii->xfer->pipe;
 841         if (pipe == NULL) {
 842                 kprintf("ii %p: done=%d xfer=%p pipe=NULL\n",
 843                        ii, DONE, ii->xfer);
 844                 return;
 845         }
 846         if (pipe->endpoint == NULL) {
 847                 kprintf("ii %p: done=%d xfer=%p pipe=%p pipe->endpoint=NULL\n",
 848                        ii, DONE, ii->xfer, pipe);
 849                 return;
 850         }
 851         if (pipe->device == NULL) {
 852                 kprintf("ii %p: done=%d xfer=%p pipe=%p pipe->device=NULL\n",
 853                        ii, DONE, ii->xfer, pipe);
 854                 return;
 855         }
 856         ed = pipe->endpoint->edesc;
 857         dev = pipe->device;
 858         kprintf("ii %p: done=%d xfer=%p dev=%p vid=0x%04x pid=0x%04x addr=%d pipe=%p ep=0x%02x attr=0x%02x\n",
 859                ii, DONE, ii->xfer, dev,
 860                UGETW(dev->ddesc.idVendor),
 861                UGETW(dev->ddesc.idProduct),
 862                dev->address, pipe,
 863                ed->bEndpointAddress, ed->bmAttributes);
 864 #undef DONE
 865 }
 866
 867 void uhci_dump_iis(struct uhci_softc *sc);
 868 void
 869 uhci_dump_iis(struct uhci_softc *sc)
 870 {
 871         uhci_intr_info_t *ii;
 872
 873         kprintf("intr_info list:\n");
 874         for (ii = LIST_FIRST(&sc->sc_intrhead); ii; ii = LIST_NEXT(ii, list))
 875                 uhci_dump_ii(ii);
 876 }
 877
 878 void iidump(void);
 879 void iidump(void) { uhci_dump_iis(thesc); }
 880
 881 #endif
 882
 883 /*
 884  * This routine is executed periodically and simulates interrupts
 885  * from the root controller interrupt pipe for port status change.
 886  */
 887 void
 888 uhci_poll_hub(void *addr)
 889 {
 890         usbd_xfer_handle xfer = addr;
 891         usbd_pipe_handle pipe = xfer->pipe;
 892         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
 893         u_char *p;
 894
 895         DPRINTFN(20, ("uhci_poll_hub\n"));
 896
 897         callout_reset(&sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
 898
 899         p = KERNADDR(&xfer->dmabuf, 0);
 900         p[0] = 0;
 901         if (UREAD2(sc, UHCI_PORTSC1) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
 902                 p[0] |= 1<<1;
 903         if (UREAD2(sc, UHCI_PORTSC2) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
 904                 p[0] |= 1<<2;
 905         if (p[0] == 0)
 906                 /* No change, try again in a while */
 907                 return;
 908
 909         xfer->actlen = 1;
 910         xfer->status = USBD_NORMAL_COMPLETION;
 911         crit_enter();
 912         xfer->device->bus->intr_context++;
 913         usb_transfer_complete(xfer);
 914         xfer->device->bus->intr_context--;
 915         crit_exit();
 916 }
 917
 918 void
 919 uhci_root_intr_done(usbd_xfer_handle xfer)
 920 {
 921 }
 922
 923 void
 924 uhci_root_ctrl_done(usbd_xfer_handle xfer)
 925 {
 926 }
 927
 928 /*
 929  * Let the last QH loop back to the high speed control transfer QH.
 930  * This is what intel calls "bandwidth reclamation" and improves
 931  * USB performance a lot for some devices.
 932  * If we are already looping, just count it.
 933  */
 934 void
 935 uhci_add_loop(uhci_softc_t *sc) {
 936 #ifdef USB_DEBUG
 937         if (uhcinoloop)
 938                 return;
 939 #endif
 940         if (++sc->sc_loops == 1) {
 941                 DPRINTFN(5,("uhci_start_loop: add\n"));
 942                 /* Note, we don't loop back the soft pointer. */
 943                 sc->sc_last_qh->qh.qh_hlink =
 944                     htole32(sc->sc_hctl_start->physaddr | UHCI_PTR_QH);
 945         }
 946 }
 947
 948 void
 949 uhci_rem_loop(uhci_softc_t *sc) {
 950 #ifdef USB_DEBUG
 951         if (uhcinoloop)
 952                 return;
 953 #endif
 954         if (--sc->sc_loops == 0) {
 955                 DPRINTFN(5,("uhci_end_loop: remove\n"));
 956                 sc->sc_last_qh->qh.qh_hlink = htole32(UHCI_PTR_T);
 957         }
 958 }
 959
 960 /* Add high speed control QH, called from a critical section. */
 961 void
 962 uhci_add_hs_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
 963 {
 964         uhci_soft_qh_t *eqh;
 965
 966         DPRINTFN(10, ("uhci_add_ctrl: sqh=%p\n", sqh));
 967         eqh = sc->sc_hctl_end;
 968         sqh->hlink       = eqh->hlink;
 969         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
 970         eqh->hlink       = sqh;
 971         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
 972         sc->sc_hctl_end = sqh;
 973 #ifdef UHCI_CTL_LOOP
 974         uhci_add_loop(sc);
 975 #endif
 976 }
 977
 978 /* Remove high speed control QH, called from a critical section. */
 979 void
 980 uhci_remove_hs_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
 981 {
 982         uhci_soft_qh_t *pqh;
 983
 984         DPRINTFN(10, ("uhci_remove_hs_ctrl: sqh=%p\n", sqh));
 985 #ifdef UHCI_CTL_LOOP
 986         uhci_rem_loop(sc);
 987 #endif
 988         /*
 989          * The T bit should be set in the elink of the QH so that the HC
 990          * doesn't follow the pointer.  This condition may fail if the
 991          * the transferred packet was short so that the QH still points
 992          * at the last used TD.
 993          * In this case we set the T bit and wait a little for the HC
 994          * to stop looking at the TD.
 995          */
 996         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
 997                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
 998                 delay(UHCI_QH_REMOVE_DELAY);
 999         }
1000
1001         pqh = uhci_find_prev_qh(sc->sc_hctl_start, sqh);
1002         pqh->hlink = sqh->hlink;
1003         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1004         delay(UHCI_QH_REMOVE_DELAY);
1005         if (sc->sc_hctl_end == sqh)
1006                 sc->sc_hctl_end = pqh;
1007 }
1008
1009 /* Add low speed control QH, called from a critical section. */
1010 void
1011 uhci_add_ls_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1012 {
1013         uhci_soft_qh_t *eqh;
1014
1015         DPRINTFN(10, ("uhci_add_ls_ctrl: sqh=%p\n", sqh));
1016         eqh = sc->sc_lctl_end;
1017         sqh->hlink = eqh->hlink;
1018         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
1019         eqh->hlink = sqh;
1020         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
1021         sc->sc_lctl_end = sqh;
1022 }
1023
1024 /* Remove low speed control QH, called from a critical section. */
1025 void
1026 uhci_remove_ls_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1027 {
1028         uhci_soft_qh_t *pqh;
1029
1030         DPRINTFN(10, ("uhci_remove_ls_ctrl: sqh=%p\n", sqh));
1031         /* See comment in uhci_remove_hs_ctrl() */
1032         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
1033                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
1034                 delay(UHCI_QH_REMOVE_DELAY);
1035         }
1036         pqh = uhci_find_prev_qh(sc->sc_lctl_start, sqh);
1037         pqh->hlink = sqh->hlink;
1038         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1039         delay(UHCI_QH_REMOVE_DELAY);
1040         if (sc->sc_lctl_end == sqh)
1041                 sc->sc_lctl_end = pqh;
1042 }
1043
1044 /* Add bulk QH, called from a critical section. */
1045 void
1046 uhci_add_bulk(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1047 {
1048         uhci_soft_qh_t *eqh;
1049
1050         DPRINTFN(10, ("uhci_add_bulk: sqh=%p\n", sqh));
1051         eqh = sc->sc_bulk_end;
1052         sqh->hlink = eqh->hlink;
1053         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
1054         eqh->hlink = sqh;
1055         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
1056         sc->sc_bulk_end = sqh;
1057         uhci_add_loop(sc);
1058 }
1059
1060 /* Remove bulk QH, called from a critical section. */
1061 void
1062 uhci_remove_bulk(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1063 {
1064         uhci_soft_qh_t *pqh;
1065
1066         DPRINTFN(10, ("uhci_remove_bulk: sqh=%p\n", sqh));
1067         uhci_rem_loop(sc);
1068         /* See comment in uhci_remove_hs_ctrl() */
1069         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
1070                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
1071                 delay(UHCI_QH_REMOVE_DELAY);
1072         }
1073         pqh = uhci_find_prev_qh(sc->sc_bulk_start, sqh);
1074         pqh->hlink       = sqh->hlink;
1075         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1076         delay(UHCI_QH_REMOVE_DELAY);
1077         if (sc->sc_bulk_end == sqh)
1078                 sc->sc_bulk_end = pqh;
1079 }
1080
1081 static int uhci_intr1(uhci_softc_t *);
1082
1083 int
1084 uhci_intr(void *arg)
1085 {
1086         uhci_softc_t *sc = arg;
1087
1088         if (sc->sc_dying || (sc->sc_flags & UHCI_SCFLG_DONEINIT) == 0)
1089                 return (0);
1090
1091         DPRINTFN(15,("uhci_intr: real interrupt\n"));
1092         if (sc->sc_bus.use_polling) {
1093 #ifdef DIAGNOSTIC
1094                 DPRINTFN(16, ("uhci_intr: ignored interrupt while polling\n"));
1095 #endif
1096                 return (0);
1097         }
1098
1099         return (uhci_intr1(sc));
1100 }
1101
1102 int
1103 uhci_intr1(uhci_softc_t *sc)
1104 {
1105
1106         int status;
1107         int ack;
1108
1109         /*
1110          * It can happen that an interrupt will be delivered to
1111          * us before the device has been fully attached and the
1112          * softc struct has been configured. Usually this happens
1113          * when kldloading the USB support as a module after the
1114          * system has been booted. If we detect this condition,
1115          * we need to squelch the unwanted interrupts until we're
1116          * ready for them.
1117          */
1118         if (sc->sc_bus.bdev == NULL) {
1119                 UWRITE2(sc, UHCI_STS, 0xFFFF);  /* ack pending interrupts */
1120                 uhci_run(sc, 0);                /* stop the controller */
1121                 UWRITE2(sc, UHCI_INTR, 0);      /* disable interrupts */
1122                 return(0);
1123         }
1124
1125 #ifdef USB_DEBUG
1126         if (uhcidebug > 15) {
1127                 DPRINTF(("%s: uhci_intr1\n", device_get_nameunit(sc->sc_bus.bdev)));
1128                 uhci_dumpregs(sc);
1129         }
1130 #endif
1131         status = UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS;
1132         if (status == 0)        /* The interrupt was not for us. */
1133                 return (0);
1134
1135         if (sc->sc_suspend != PWR_RESUME) {
1136                 kprintf("%s: interrupt while not operating ignored\n",
1137                        device_get_nameunit(sc->sc_bus.bdev));
1138                 UWRITE2(sc, UHCI_STS, status); /* acknowledge the ints */
1139                 return (0);
1140         }
1141
1142         ack = 0;
1143         if (status & UHCI_STS_USBINT)
1144                 ack |= UHCI_STS_USBINT;
1145         if (status & UHCI_STS_USBEI)
1146                 ack |= UHCI_STS_USBEI;
1147         if (status & UHCI_STS_RD) {
1148                 ack |= UHCI_STS_RD;
1149 #ifdef USB_DEBUG
1150                 kprintf("%s: resume detect\n", device_get_nameunit(sc->sc_bus.bdev));
1151 #endif
1152         }
1153         if (status & UHCI_STS_HSE) {
1154                 ack |= UHCI_STS_HSE;
1155                 kprintf("%s: host system error\n", device_get_nameunit(sc->sc_bus.bdev));
1156         }
1157         if (status & UHCI_STS_HCPE) {
1158                 ack |= UHCI_STS_HCPE;
1159                 kprintf("%s: host controller process error\n",
1160                        device_get_nameunit(sc->sc_bus.bdev));
1161         }
1162         if (status & UHCI_STS_HCH) {
1163                 /* no acknowledge needed */
1164                 if (!sc->sc_dying) {
1165                         kprintf("%s: host controller halted\n",
1166                             device_get_nameunit(sc->sc_bus.bdev));
1167 #ifdef USB_DEBUG
1168                         uhci_dump_all(sc);
1169 #endif
1170                 }
1171                 sc->sc_dying = 1;
1172         }
1173
1174         if (!ack)
1175                 return (0);     /* nothing to acknowledge */
1176         UWRITE2(sc, UHCI_STS, ack); /* acknowledge the ints */
1177
1178         sc->sc_bus.no_intrs++;
1179         usb_schedsoftintr(&sc->sc_bus);
1180
1181         DPRINTFN(15, ("%s: uhci_intr: exit\n", device_get_nameunit(sc->sc_bus.bdev)));
1182
1183         return (1);
1184 }
1185
1186 void
1187 uhci_softintr(void *v)
1188 {
1189         uhci_softc_t *sc = v;
1190         uhci_intr_info_t *ii, *nextii;
1191
1192         DPRINTFN(10,("%s: uhci_softintr (%d)\n", device_get_nameunit(sc->sc_bus.bdev),
1193                      sc->sc_bus.intr_context));
1194
1195         sc->sc_bus.intr_context++;
1196
1197         /*
1198          * Interrupts on UHCI really suck.  When the host controller
1199          * interrupts because a transfer is completed there is no
1200          * way of knowing which transfer it was.  You can scan down
1201          * the TDs and QHs of the previous frame to limit the search,
1202          * but that assumes that the interrupt was not delayed by more
1203          * than 1 ms, which may not always be true (e.g. after debug
1204          * output on a slow console).
1205          * We scan all interrupt descriptors to see if any have
1206          * completed.
1207          */
1208         LIST_FOREACH_MUTABLE(ii, &sc->sc_intrhead, list, nextii)
1209                 uhci_check_intr(sc, ii);
1210
1211 #ifdef USB_USE_SOFTINTR
1212         if (sc->sc_softwake) {
1213                 sc->sc_softwake = 0;
1214                 wakeup(&sc->sc_softwake);
1215         }
1216 #endif /* USB_USE_SOFTINTR */
1217
1218         sc->sc_bus.intr_context--;
1219 }
1220
1221 /* Check for an interrupt. */
1222 void
1223 uhci_check_intr(uhci_softc_t *sc, uhci_intr_info_t *ii)
1224 {
1225         uhci_soft_td_t *std, *lstd;
1226         u_int32_t status;
1227
1228         DPRINTFN(15, ("uhci_check_intr: ii=%p\n", ii));
1229 #ifdef DIAGNOSTIC
1230         if (ii == NULL) {
1231                 kprintf("uhci_check_intr: no ii? %p\n", ii);
1232                 return;
1233         }
1234 #endif
1235         if (ii->xfer->status == USBD_CANCELLED ||
1236             ii->xfer->status == USBD_TIMEOUT) {
1237                 DPRINTF(("uhci_check_intr: aborted xfer=%p\n", ii->xfer));
1238                 return;
1239         }
1240
1241         if (ii->stdstart == NULL)
1242                 return;
1243         lstd = ii->stdend;
1244 #ifdef DIAGNOSTIC
1245         if (lstd == NULL) {
1246                 kprintf("uhci_check_intr: std==0\n");
1247                 return;
1248         }
1249 #endif
1250         /*
1251          * If the last TD is still active we need to check whether there
1252          * is an error somewhere in the middle, or whether there was a
1253          * short packet (SPD and not ACTIVE).
1254          */
1255         if (le32toh(lstd->td.td_status) & UHCI_TD_ACTIVE) {
1256                 DPRINTFN(12, ("uhci_check_intr: active ii=%p\n", ii));
1257                 for (std = ii->stdstart; std != lstd; std = std->link.std) {
1258                         status = le32toh(std->td.td_status);
1259                         /* If there's an active TD the xfer isn't done. */
1260                         if (status & UHCI_TD_ACTIVE)
1261                                 break;
1262                         /* Any kind of error makes the xfer done. */
1263                         if (status & UHCI_TD_STALLED)
1264                                 goto done;
1265                         /* We want short packets, and it is short: it's done */
1266                         if ((status & UHCI_TD_SPD) &&
1267                             UHCI_TD_GET_ACTLEN(status) <
1268                             UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token))) {
1269                                 goto done;
1270                         }
1271                 }
1272                 DPRINTFN(12, ("uhci_check_intr: ii=%p std=%p still active\n",
1273                               ii, ii->stdstart));
1274                 return;
1275         }
1276 done:
1277         DPRINTFN(12, ("uhci_check_intr: ii=%p done\n", ii));
1278         callout_stop(&ii->xfer->timeout_handle);
1279         usb_rem_task(ii->xfer->pipe->device, &UXFER(ii->xfer)->abort_task);
1280         uhci_idone(ii);
1281 }
1282
1283 /* Called from a critical section. */
1284 void
1285 uhci_idone(uhci_intr_info_t *ii)
1286 {
1287         usbd_xfer_handle xfer = ii->xfer;
1288         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1289         uhci_soft_td_t *std;
1290         u_int32_t status = 0, nstatus;
1291         int actlen;
1292
1293         DPRINTFN(12, ("uhci_idone: ii=%p\n", ii));
1294 #ifdef DIAGNOSTIC
1295         {
1296                 crit_enter();
1297                 if (ii->isdone) {
1298                         crit_exit();
1299 #ifdef USB_DEBUG
1300                         kprintf("uhci_idone: ii is done!\n   ");
1301                         uhci_dump_ii(ii);
1302 #else
1303                         kprintf("uhci_idone: ii=%p is done!\n", ii);
1304 #endif
1305                         return;
1306                 }
1307                 ii->isdone = 1;
1308                 crit_exit();
1309         }
1310 #endif
1311
1312         if (xfer->nframes != 0) {
1313                 /* Isoc transfer, do things differently. */
1314                 uhci_soft_td_t **stds = upipe->u.iso.stds;
1315                 int i, n, nframes, len;
1316
1317                 DPRINTFN(5,("uhci_idone: ii=%p isoc ready\n", ii));
1318
1319                 nframes = xfer->nframes;
1320                 actlen = 0;
1321                 n = UXFER(xfer)->curframe;
1322                 for (i = 0; i < nframes; i++) {
1323                         std = stds[n];
1324 #ifdef USB_DEBUG
1325                         if (uhcidebug > 5) {
1326                                 DPRINTFN(-1,("uhci_idone: isoc TD %d\n", i));
1327                                 uhci_dump_td(std);
1328                         }
1329 #endif
1330                         if (++n >= UHCI_VFRAMELIST_COUNT)
1331                                 n = 0;
1332                         status = le32toh(std->td.td_status);
1333                         len = UHCI_TD_GET_ACTLEN(status);
1334                         xfer->frlengths[i] = len;
1335                         actlen += len;
1336                 }
1337                 upipe->u.iso.inuse -= nframes;
1338                 xfer->actlen = actlen;
1339                 xfer->status = USBD_NORMAL_COMPLETION;
1340                 goto end;
1341         }
1342
1343 #ifdef USB_DEBUG
1344         DPRINTFN(10, ("uhci_idone: ii=%p, xfer=%p, pipe=%p ready\n",
1345                       ii, xfer, upipe));
1346         if (uhcidebug > 10)
1347                 uhci_dump_tds(ii->stdstart);
1348 #endif
1349
1350         /* The transfer is done, compute actual length and status. */
1351         actlen = 0;
1352         for (std = ii->stdstart; std != NULL; std = std->link.std) {
1353                 nstatus = le32toh(std->td.td_status);
1354                 if (nstatus & UHCI_TD_ACTIVE)
1355                         break;
1356
1357                 status = nstatus;
1358                 if (UHCI_TD_GET_PID(le32toh(std->td.td_token)) !=
1359                     UHCI_TD_PID_SETUP) {
1360                         actlen += UHCI_TD_GET_ACTLEN(status);
1361                 } else {
1362                         /*
1363                          * UHCI will report CRCTO in addition to a STALL or NAK
1364                          * for a SETUP transaction.  See section 3.2.2, "TD
1365                          * CONTROL AND STATUS".
1366                          */
1367                         if (status & (UHCI_TD_STALLED | UHCI_TD_NAK))
1368                                 status &= ~UHCI_TD_CRCTO;
1369                 }
1370
1371         }
1372         /* If there are left over TDs we need to update the toggle. */
1373         if (std != NULL)
1374                 upipe->nexttoggle = UHCI_TD_GET_DT(le32toh(std->td.td_token));
1375
1376         status &= UHCI_TD_ERROR;
1377         DPRINTFN(10, ("uhci_idone: actlen=%d, status=0x%x\n",
1378                       actlen, status));
1379         xfer->actlen = actlen;
1380         if (status != 0) {
1381 #ifdef USB_DEBUG
1382                 char sbuf[128];
1383
1384                 bitmask_snprintf((u_int32_t)status,
1385                                  "\20\22BITSTUFF\23CRCTO\24NAK\25"
1386                                  "BABBLE\26DBUFFER\27STALLED\30ACTIVE",
1387                                  sbuf, sizeof(sbuf));
1388
1389                 DPRINTFN((status == UHCI_TD_STALLED)*10,
1390                          ("uhci_idone: error, addr=%d, endpt=0x%02x, "
1391                           "status 0x%s\n",
1392                           xfer->pipe->device->address,
1393                           xfer->pipe->endpoint->edesc->bEndpointAddress,
1394                           sbuf));
1395 #endif
1396                 if (status == UHCI_TD_STALLED)
1397                         xfer->status = USBD_STALLED;
1398                 else
1399                         xfer->status = USBD_IOERROR; /* more info XXX */
1400         } else {
1401                 xfer->status = USBD_NORMAL_COMPLETION;
1402         }
1403
1404  end:
1405         usb_transfer_complete(xfer);
1406         DPRINTFN(12, ("uhci_idone: ii=%p done\n", ii));
1407 }
1408
1409 /*
1410  * Called when a request does not complete.
1411  */
1412 void
1413 uhci_timeout(void *addr)
1414 {
1415         uhci_intr_info_t *ii = addr;
1416         struct uhci_xfer *uxfer = UXFER(ii->xfer);
1417         struct uhci_pipe *upipe = (struct uhci_pipe *)uxfer->xfer.pipe;
1418         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1419
1420         DPRINTF(("uhci_timeout: uxfer=%p\n", uxfer));
1421
1422         if (sc->sc_dying) {
1423                 uhci_abort_xfer(&uxfer->xfer, USBD_TIMEOUT);
1424                 return;
1425         }
1426
1427         /* Execute the abort in a process context. */
1428         usb_add_task(uxfer->xfer.pipe->device, &uxfer->abort_task,
1429                      USB_TASKQ_HC);
1430 }
1431
1432 void
1433 uhci_timeout_task(void *addr)
1434 {
1435         usbd_xfer_handle xfer = addr;
1436
1437         DPRINTF(("uhci_timeout_task: xfer=%p\n", xfer));
1438
1439         crit_enter();
1440         uhci_abort_xfer(xfer, USBD_TIMEOUT);
1441         crit_exit();
1442 }
1443
1444 /*
1445  * Wait here until controller claims to have an interrupt.
1446  * Then call uhci_intr and return.  Use timeout to avoid waiting
1447  * too long.
1448  * Only used during boot when interrupts are not enabled yet.
1449  */
1450 void
1451 uhci_waitintr(uhci_softc_t *sc, usbd_xfer_handle xfer)
1452 {
1453         int timo = xfer->timeout;
1454         uhci_intr_info_t *ii;
1455
1456         DPRINTFN(10,("uhci_waitintr: timeout = %dms\n", timo));
1457
1458         xfer->status = USBD_IN_PROGRESS;
1459         for (; timo >= 0; timo--) {
1460                 usb_delay_ms(&sc->sc_bus, 1);
1461                 DPRINTFN(20,("uhci_waitintr: 0x%04x\n", UREAD2(sc, UHCI_STS)));
1462                 if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1463                         uhci_intr1(sc);
1464                 if (xfer->status != USBD_IN_PROGRESS)
1465                         return;
1466         }
1467
1468         /* Timeout */
1469         DPRINTF(("uhci_waitintr: timeout\n"));
1470         for (ii = LIST_FIRST(&sc->sc_intrhead);
1471              ii != NULL && ii->xfer != xfer;
1472              ii = LIST_NEXT(ii, list))
1473                 ;
1474 #ifdef DIAGNOSTIC
1475         if (ii == NULL)
1476                 panic("uhci_waitintr: lost intr_info");
1477 #endif
1478         uhci_idone(ii);
1479 }
1480
1481 void
1482 uhci_poll(struct usbd_bus *bus)
1483 {
1484         uhci_softc_t *sc = (uhci_softc_t *)bus;
1485
1486         if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1487                 uhci_intr1(sc);
1488 }
1489
1490 void
1491 uhci_reset(uhci_softc_t *sc)
1492 {
1493         int n;
1494
1495         UHCICMD(sc, UHCI_CMD_HCRESET);
1496         /* The reset bit goes low when the controller is done. */
1497         for (n = 0; n < UHCI_RESET_TIMEOUT &&
1498                     (UREAD2(sc, UHCI_CMD) & UHCI_CMD_HCRESET); n++)
1499                 usb_delay_ms(&sc->sc_bus, 1);
1500         if (n >= UHCI_RESET_TIMEOUT)
1501                 kprintf("%s: controller did not reset\n",
1502                        device_get_nameunit(sc->sc_bus.bdev));
1503 }
1504
1505 usbd_status
1506 uhci_run(uhci_softc_t *sc, int run)
1507 {
1508         int n, running;
1509         u_int16_t cmd;
1510
1511         run = run != 0;
1512         crit_enter();
1513         DPRINTF(("uhci_run: setting run=%d\n", run));
1514         cmd = UREAD2(sc, UHCI_CMD);
1515         if (run)
1516                 cmd |= UHCI_CMD_RS;
1517         else
1518                 cmd &= ~UHCI_CMD_RS;
1519         UHCICMD(sc, cmd);
1520         for(n = 0; n < 10; n++) {
1521                 running = !(UREAD2(sc, UHCI_STS) & UHCI_STS_HCH);
1522                 /* return when we've entered the state we want */
1523                 if (run == running) {
1524                         crit_exit();
1525                         DPRINTF(("uhci_run: done cmd=0x%x sts=0x%x\n",
1526                                  UREAD2(sc, UHCI_CMD), UREAD2(sc, UHCI_STS)));
1527                         return (USBD_NORMAL_COMPLETION);
1528                 }
1529                 usb_delay_ms(&sc->sc_bus, 1);
1530         }
1531         crit_exit();
1532         kprintf("%s: cannot %s\n", device_get_nameunit(sc->sc_bus.bdev),
1533                run ? "start" : "stop");
1534         return (USBD_IOERROR);
1535 }
1536
1537 /*
1538  * Memory management routines.
1539  *  uhci_alloc_std allocates TDs
1540  *  uhci_alloc_sqh allocates QHs
1541  * These two routines do their own free list management,
1542  * partly for speed, partly because allocating DMAable memory
1543  * has page size granularaity so much memory would be wasted if
1544  * only one TD/QH (32 bytes) was placed in each allocated chunk.
1545  */
1546
1547 uhci_soft_td_t *
1548 uhci_alloc_std(uhci_softc_t *sc)
1549 {
1550         uhci_soft_td_t *std;
1551         usbd_status err;
1552         int i, offs;
1553         usb_dma_t dma;
1554
1555         if (sc->sc_freetds == NULL) {
1556                 DPRINTFN(2,("uhci_alloc_std: allocating chunk\n"));
1557                 err = usb_allocmem(&sc->sc_bus, UHCI_STD_SIZE * UHCI_STD_CHUNK,
1558                           UHCI_TD_ALIGN, &dma);
1559                 if (err)
1560                         return (0);
1561                 for(i = 0; i < UHCI_STD_CHUNK; i++) {
1562                         offs = i * UHCI_STD_SIZE;
1563                         std = KERNADDR(&dma, offs);
1564                         std->physaddr = DMAADDR(&dma, offs);
1565                         std->link.std = sc->sc_freetds;
1566                         sc->sc_freetds = std;
1567                 }
1568         }
1569         std = sc->sc_freetds;
1570         sc->sc_freetds = std->link.std;
1571         memset(&std->td, 0, sizeof(uhci_td_t));
1572         return std;
1573 }
1574
1575 void
1576 uhci_free_std(uhci_softc_t *sc, uhci_soft_td_t *std)
1577 {
1578 #ifdef DIAGNOSTIC
1579 #define TD_IS_FREE 0x12345678
1580         if (le32toh(std->td.td_token) == TD_IS_FREE) {
1581                 kprintf("uhci_free_std: freeing free TD %p\n", std);
1582                 return;
1583         }
1584         std->td.td_token = htole32(TD_IS_FREE);
1585 #endif
1586         std->link.std = sc->sc_freetds;
1587         sc->sc_freetds = std;
1588 }
1589
1590 uhci_soft_qh_t *
1591 uhci_alloc_sqh(uhci_softc_t *sc)
1592 {
1593         uhci_soft_qh_t *sqh;
1594         usbd_status err;
1595         int i, offs;
1596         usb_dma_t dma;
1597
1598         if (sc->sc_freeqhs == NULL) {
1599                 DPRINTFN(2, ("uhci_alloc_sqh: allocating chunk\n"));
1600                 err = usb_allocmem(&sc->sc_bus, UHCI_SQH_SIZE * UHCI_SQH_CHUNK,
1601                           UHCI_QH_ALIGN, &dma);
1602                 if (err)
1603                         return (0);
1604                 for(i = 0; i < UHCI_SQH_CHUNK; i++) {
1605                         offs = i * UHCI_SQH_SIZE;
1606                         sqh = KERNADDR(&dma, offs);
1607                         sqh->physaddr = DMAADDR(&dma, offs);
1608                         sqh->hlink = sc->sc_freeqhs;
1609                         sc->sc_freeqhs = sqh;
1610                 }
1611         }
1612         sqh = sc->sc_freeqhs;
1613         sc->sc_freeqhs = sqh->hlink;
1614         memset(&sqh->qh, 0, sizeof(uhci_qh_t));
1615         return (sqh);
1616 }
1617
1618 void
1619 uhci_free_sqh(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1620 {
1621         sqh->hlink = sc->sc_freeqhs;
1622         sc->sc_freeqhs = sqh;
1623 }
1624
1625 void
1626 uhci_free_std_chain(uhci_softc_t *sc, uhci_soft_td_t *std,
1627                     uhci_soft_td_t *stdend)
1628 {
1629         uhci_soft_td_t *p;
1630
1631         for (; std != stdend; std = p) {
1632                 p = std->link.std;
1633                 uhci_free_std(sc, std);
1634         }
1635 }
1636
1637 usbd_status
1638 uhci_alloc_std_chain(struct uhci_pipe *upipe, uhci_softc_t *sc, int len,
1639                      int rd, u_int16_t flags, usb_dma_t *dma,
1640                      uhci_soft_td_t **sp, uhci_soft_td_t **ep)
1641 {
1642         uhci_soft_td_t *p, *lastp;
1643         uhci_physaddr_t lastlink;
1644         int i, ntd, l, tog, maxp;
1645         u_int32_t status;
1646         int addr = upipe->pipe.device->address;
1647         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1648
1649         DPRINTFN(8, ("uhci_alloc_std_chain: addr=%d endpt=%d len=%d speed=%d "
1650                      "flags=0x%x\n", addr, UE_GET_ADDR(endpt), len,
1651                      upipe->pipe.device->speed, flags));
1652         maxp = UGETW(upipe->pipe.endpoint->edesc->wMaxPacketSize);
1653         if (maxp == 0) {
1654                 kprintf("uhci_alloc_std_chain: maxp=0\n");
1655                 return (USBD_INVAL);
1656         }
1657         ntd = (len + maxp - 1) / maxp;
1658         if ((flags & USBD_FORCE_SHORT_XFER) && len % maxp == 0)
1659                 ntd++;
1660         DPRINTFN(10, ("uhci_alloc_std_chain: maxp=%d ntd=%d\n", maxp, ntd));
1661         if (ntd == 0) {
1662                 *sp = *ep = 0;
1663                 DPRINTFN(-1,("uhci_alloc_std_chain: ntd=0\n"));
1664                 return (USBD_NORMAL_COMPLETION);
1665         }
1666         tog = upipe->nexttoggle;
1667         if (ntd % 2 == 0)
1668                 tog ^= 1;
1669         upipe->nexttoggle = tog ^ 1;
1670         lastp = NULL;
1671         lastlink = UHCI_PTR_T;
1672         ntd--;
1673         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(3) | UHCI_TD_ACTIVE);
1674         if (upipe->pipe.device->speed == USB_SPEED_LOW)
1675                 status |= UHCI_TD_LS;
1676         if (flags & USBD_SHORT_XFER_OK)
1677                 status |= UHCI_TD_SPD;
1678         for (i = ntd; i >= 0; i--) {
1679                 p = uhci_alloc_std(sc);
1680                 if (p == NULL) {
1681                         uhci_free_std_chain(sc, lastp, NULL);
1682                         return (USBD_NOMEM);
1683                 }
1684                 p->link.std = lastp;
1685                 p->td.td_link = htole32(lastlink | UHCI_PTR_VF | UHCI_PTR_TD);
1686                 lastp = p;
1687                 lastlink = p->physaddr;
1688                 p->td.td_status = htole32(status);
1689                 if (i == ntd) {
1690                         /* last TD */
1691                         l = len % maxp;
1692                         if (l == 0 && !(flags & USBD_FORCE_SHORT_XFER))
1693                                 l = maxp;
1694                         *ep = p;
1695                 } else
1696                         l = maxp;
1697                 p->td.td_token =
1698                         htole32(rd ? UHCI_TD_IN (l, endpt, addr, tog) :
1699                                      UHCI_TD_OUT(l, endpt, addr, tog));
1700                 p->td.td_buffer = htole32(DMAADDR(dma, i * maxp));
1701                 tog ^= 1;
1702         }
1703         *sp = lastp;
1704         DPRINTFN(10, ("uhci_alloc_std_chain: nexttog=%d\n",
1705                       upipe->nexttoggle));
1706         return (USBD_NORMAL_COMPLETION);
1707 }
1708
1709 void
1710 uhci_device_clear_toggle(usbd_pipe_handle pipe)
1711 {
1712         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
1713         upipe->nexttoggle = 0;
1714 }
1715
1716 void
1717 uhci_noop(usbd_pipe_handle pipe)
1718 {
1719 }
1720
1721 usbd_status
1722 uhci_device_bulk_transfer(usbd_xfer_handle xfer)
1723 {
1724         usbd_status err;
1725
1726         /* Insert last in queue. */
1727         err = usb_insert_transfer(xfer);
1728         if (err)
1729                 return (err);
1730
1731         /*
1732          * Pipe isn't running (otherwise err would be USBD_INPROG),
1733          * so start it first.
1734          */
1735         return (uhci_device_bulk_start(STAILQ_FIRST(&xfer->pipe->queue)));
1736 }
1737
1738 usbd_status
1739 uhci_device_bulk_start(usbd_xfer_handle xfer)
1740 {
1741         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1742         usbd_device_handle dev = upipe->pipe.device;
1743         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
1744         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
1745         uhci_soft_td_t *data, *dataend;
1746         uhci_soft_qh_t *sqh;
1747         usbd_status err;
1748         int len, isread, endpt;
1749
1750         DPRINTFN(3, ("uhci_device_bulk_start: xfer=%p len=%d flags=%d ii=%p\n",
1751                      xfer, xfer->length, xfer->flags, ii));
1752
1753         if (sc->sc_dying)
1754                 return (USBD_IOERROR);
1755
1756 #ifdef DIAGNOSTIC
1757         if (xfer->rqflags & URQ_REQUEST)
1758                 panic("uhci_device_bulk_transfer: a request");
1759 #endif
1760
1761         len = xfer->length;
1762         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1763         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
1764         sqh = upipe->u.bulk.sqh;
1765
1766         upipe->u.bulk.isread = isread;
1767         upipe->u.bulk.length = len;
1768
1769         err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
1770                                    &xfer->dmabuf, &data, &dataend);
1771         if (err)
1772                 return (err);
1773         dataend->td.td_status |= htole32(UHCI_TD_IOC);
1774
1775 #ifdef USB_DEBUG
1776         if (uhcidebug > 8) {
1777                 DPRINTF(("uhci_device_bulk_transfer: data(1)\n"));
1778                 uhci_dump_tds(data);
1779         }
1780 #endif
1781
1782         /* Set up interrupt info. */
1783         ii->xfer = xfer;
1784         ii->stdstart = data;
1785         ii->stdend = dataend;
1786 #ifdef DIAGNOSTIC
1787         if (!ii->isdone) {
1788                 kprintf("uhci_device_bulk_transfer: not done, ii=%p\n", ii);
1789         }
1790         ii->isdone = 0;
1791 #endif
1792
1793         sqh->elink = data;
1794         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
1795
1796         crit_enter();
1797         uhci_add_bulk(sc, sqh);
1798         uhci_add_intr_info(sc, ii);
1799
1800         if (xfer->timeout && !sc->sc_bus.use_polling) {
1801                 callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
1802                             uhci_timeout, ii);
1803         }
1804         xfer->status = USBD_IN_PROGRESS;
1805         crit_exit();
1806
1807 #ifdef USB_DEBUG
1808         if (uhcidebug > 10) {
1809                 DPRINTF(("uhci_device_bulk_transfer: data(2)\n"));
1810                 uhci_dump_tds(data);
1811         }
1812 #endif
1813
1814         if (sc->sc_bus.use_polling)
1815                 uhci_waitintr(sc, xfer);
1816
1817         return (USBD_IN_PROGRESS);
1818 }
1819
1820 /* Abort a device bulk request. */
1821 void
1822 uhci_device_bulk_abort(usbd_xfer_handle xfer)
1823 {
1824         DPRINTF(("uhci_device_bulk_abort:\n"));
1825         uhci_abort_xfer(xfer, USBD_CANCELLED);
1826 }
1827
1828 /*
1829  * Abort a device request.
1830  * If this routine is called from a critical section.  It guarantees that
1831  * the request will be removed from the hardware scheduling and that
1832  * the callback for it will be called with USBD_CANCELLED status.
1833  * It's impossible to guarantee that the requested transfer will not
1834  * have happened since the hardware runs concurrently.
1835  * If the transaction has already happened we rely on the ordinary
1836  * interrupt processing to process it.
1837  */
1838 void
1839 uhci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
1840 {
1841         struct uhci_xfer *uxfer = UXFER(xfer);
1842         uhci_intr_info_t *ii = &uxfer->iinfo;
1843         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1844         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1845         uhci_soft_td_t *std;
1846
1847         DPRINTFN(1,("uhci_abort_xfer: xfer=%p, status=%d\n", xfer, status));
1848
1849         if (sc->sc_dying) {
1850                 /* If we're dying, just do the software part. */
1851                 crit_enter();
1852                 xfer->status = status;  /* make software ignore it */
1853                 callout_stop(&xfer->timeout_handle);
1854                 usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1855                 usb_transfer_complete(xfer);
1856                 crit_exit();
1857                 return;
1858         }
1859
1860         if (xfer->device->bus->intr_context /* || !curproc REMOVED DFly */)
1861                 panic("uhci_abort_xfer: not in process context");
1862
1863         /*
1864          * If an abort is already in progress then just wait for it to
1865          * complete and return.
1866          */
1867         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING) {
1868                 DPRINTFN(2, ("uhci_abort_xfer: already aborting\n"));
1869                 /* No need to wait if we're aborting from a timeout. */
1870                 if (status == USBD_TIMEOUT)
1871                         return;
1872                 /* Override the status which might be USBD_TIMEOUT. */
1873                 xfer->status = status;
1874                 DPRINTFN(2, ("uhci_abort_xfer: waiting for abort to finish\n"));
1875                 uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTWAIT;
1876                 while (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING)
1877                         tsleep(&uxfer->uhci_xfer_flags, 0, "uhciaw", 0);
1878                 return;
1879         }
1880
1881         /*
1882          * Step 1: Make interrupt routine and hardware ignore xfer.
1883          */
1884         crit_enter();
1885         uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTING;
1886         xfer->status = status;  /* make software ignore it */
1887         callout_stop(&xfer->timeout_handle);
1888         usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1889         DPRINTFN(1,("uhci_abort_xfer: stop ii=%p\n", ii));
1890         for (std = ii->stdstart; std != NULL; std = std->link.std)
1891                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
1892         crit_exit();
1893
1894         /*
1895          * Step 2: Wait until we know hardware has finished any possible
1896          * use of the xfer.  Also make sure the soft interrupt routine
1897          * has run.
1898          */
1899         usb_delay_ms(upipe->pipe.device->bus, 2); /* Hardware finishes in 1ms */
1900         crit_enter();
1901 #ifdef USB_USE_SOFTINTR
1902         sc->sc_softwake = 1;
1903 #endif /* USB_USE_SOFTINTR */
1904         usb_schedsoftintr(&sc->sc_bus);
1905 #ifdef USB_USE_SOFTINTR
1906         DPRINTFN(1,("uhci_abort_xfer: tsleep\n"));
1907         tsleep(&sc->sc_softwake, 0, "uhciab", 0);
1908 #endif /* USB_USE_SOFTINTR */
1909
1910         /*
1911          * Step 3: Execute callback.
1912          */
1913         DPRINTFN(1,("uhci_abort_xfer: callback\n"));
1914 #ifdef DIAGNOSTIC
1915         ii->isdone = 1;
1916 #endif
1917         /* Do the wakeup first to avoid touching the xfer after the callback. */
1918         uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTING;
1919         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTWAIT) {
1920                 uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTWAIT;
1921                 wakeup(&uxfer->uhci_xfer_flags);
1922         }
1923         usb_transfer_complete(xfer);
1924         crit_exit();
1925 }
1926
1927 /* Close a device bulk pipe. */
1928 void
1929 uhci_device_bulk_close(usbd_pipe_handle pipe)
1930 {
1931         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
1932         usbd_device_handle dev = upipe->pipe.device;
1933         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
1934
1935         uhci_free_sqh(sc, upipe->u.bulk.sqh);
1936         pipe->endpoint->savedtoggle = upipe->nexttoggle;
1937 }
1938
1939 usbd_status
1940 uhci_device_ctrl_transfer(usbd_xfer_handle xfer)
1941 {
1942         usbd_status err;
1943
1944         /* Insert last in queue. */
1945         err = usb_insert_transfer(xfer);
1946         if (err)
1947                 return (err);
1948
1949         /*
1950          * Pipe isn't running (otherwise err would be USBD_INPROG),
1951          * so start it first.
1952          */
1953         return (uhci_device_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
1954 }
1955
1956 usbd_status
1957 uhci_device_ctrl_start(usbd_xfer_handle xfer)
1958 {
1959         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
1960         usbd_status err;
1961
1962         if (sc->sc_dying)
1963                 return (USBD_IOERROR);
1964
1965 #ifdef DIAGNOSTIC
1966         if (!(xfer->rqflags & URQ_REQUEST))
1967                 panic("uhci_device_ctrl_transfer: not a request");
1968 #endif
1969
1970         err = uhci_device_request(xfer);
1971         if (err)
1972                 return (err);
1973
1974         if (sc->sc_bus.use_polling)
1975                 uhci_waitintr(sc, xfer);
1976         return (USBD_IN_PROGRESS);
1977 }
1978
1979 usbd_status
1980 uhci_device_intr_transfer(usbd_xfer_handle xfer)
1981 {
1982         usbd_status err;
1983
1984         /* Insert last in queue. */
1985         err = usb_insert_transfer(xfer);
1986         if (err)
1987                 return (err);
1988
1989         /*
1990          * Pipe isn't running (otherwise err would be USBD_INPROG),
1991          * so start it first.
1992          */
1993         return (uhci_device_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
1994 }
1995
1996 usbd_status
1997 uhci_device_intr_start(usbd_xfer_handle xfer)
1998 {
1999         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2000         usbd_device_handle dev = upipe->pipe.device;
2001         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2002         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2003         uhci_soft_td_t *data, *dataend;
2004         uhci_soft_qh_t *sqh;
2005         usbd_status err;
2006         int isread, endpt;
2007         int i;
2008
2009         if (sc->sc_dying)
2010                 return (USBD_IOERROR);
2011
2012         DPRINTFN(3,("uhci_device_intr_transfer: xfer=%p len=%d flags=%d\n",
2013                     xfer, xfer->length, xfer->flags));
2014
2015 #ifdef DIAGNOSTIC
2016         if (xfer->rqflags & URQ_REQUEST)
2017                 panic("uhci_device_intr_transfer: a request");
2018 #endif
2019
2020         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2021         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
2022         sqh = upipe->u.bulk.sqh;
2023
2024         upipe->u.intr.isread = isread;
2025
2026         err = uhci_alloc_std_chain(upipe, sc, xfer->length, isread,
2027                                    xfer->flags, &xfer->dmabuf, &data,
2028                                    &dataend);
2029         if (err)
2030                 return (err);
2031         dataend->td.td_status |= htole32(UHCI_TD_IOC);
2032
2033 #ifdef USB_DEBUG
2034         if (uhcidebug > 10) {
2035                 DPRINTF(("uhci_device_intr_transfer: data(1)\n"));
2036                 uhci_dump_tds(data);
2037                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2038         }
2039 #endif
2040
2041         crit_enter();
2042         /* Set up interrupt info. */
2043         ii->xfer = xfer;
2044         ii->stdstart = data;
2045         ii->stdend = dataend;
2046 #ifdef DIAGNOSTIC
2047         if (!ii->isdone) {
2048                 kprintf("uhci_device_intr_transfer: not done, ii=%p\n", ii);
2049         }
2050         ii->isdone = 0;
2051 #endif
2052
2053         DPRINTFN(10,("uhci_device_intr_transfer: qhs[0]=%p\n",
2054                      upipe->u.intr.qhs[0]));
2055         for (i = 0; i < upipe->u.intr.npoll; i++) {
2056                 sqh = upipe->u.intr.qhs[i];
2057                 sqh->elink = data;
2058                 sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2059         }
2060         uhci_add_intr_info(sc, ii);
2061         xfer->status = USBD_IN_PROGRESS;
2062         crit_exit();
2063
2064 #ifdef USB_DEBUG
2065         if (uhcidebug > 10) {
2066                 DPRINTF(("uhci_device_intr_transfer: data(2)\n"));
2067                 uhci_dump_tds(data);
2068                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2069         }
2070 #endif
2071
2072         return (USBD_IN_PROGRESS);
2073 }
2074
2075 /* Abort a device control request. */
2076 void
2077 uhci_device_ctrl_abort(usbd_xfer_handle xfer)
2078 {
2079         DPRINTF(("uhci_device_ctrl_abort:\n"));
2080         uhci_abort_xfer(xfer, USBD_CANCELLED);
2081 }
2082
2083 /* Close a device control pipe. */
2084 void
2085 uhci_device_ctrl_close(usbd_pipe_handle pipe)
2086 {
2087 }
2088
2089 /* Abort a device interrupt request. */
2090 void
2091 uhci_device_intr_abort(usbd_xfer_handle xfer)
2092 {
2093         DPRINTFN(1,("uhci_device_intr_abort: xfer=%p\n", xfer));
2094         if (xfer->pipe->intrxfer == xfer) {
2095                 DPRINTFN(1,("uhci_device_intr_abort: remove\n"));
2096                 xfer->pipe->intrxfer = NULL;
2097         }
2098         uhci_abort_xfer(xfer, USBD_CANCELLED);
2099 }
2100
2101 /* Close a device interrupt pipe. */
2102 void
2103 uhci_device_intr_close(usbd_pipe_handle pipe)
2104 {
2105         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2106         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2107         int i, npoll;
2108
2109         /* Unlink descriptors from controller data structures. */
2110         npoll = upipe->u.intr.npoll;
2111         crit_enter();
2112         for (i = 0; i < npoll; i++)
2113                 uhci_remove_intr(sc, upipe->u.intr.qhs[i]);
2114         crit_exit();
2115
2116         /*
2117          * We now have to wait for any activity on the physical
2118          * descriptors to stop.
2119          */
2120         usb_delay_ms(&sc->sc_bus, 2);
2121
2122         for(i = 0; i < npoll; i++)
2123                 uhci_free_sqh(sc, upipe->u.intr.qhs[i]);
2124         kfree(upipe->u.intr.qhs, M_USBHC);
2125
2126         /* XXX free other resources */
2127 }
2128
2129 usbd_status
2130 uhci_device_request(usbd_xfer_handle xfer)
2131 {
2132         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2133         usb_device_request_t *req = &xfer->request;
2134         usbd_device_handle dev = upipe->pipe.device;
2135         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2136         int addr = dev->address;
2137         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2138         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2139         uhci_soft_td_t *setup, *data, *stat, *next, *dataend;
2140         uhci_soft_qh_t *sqh;
2141         int len;
2142         u_int32_t ls;
2143         usbd_status err;
2144         int isread;
2145
2146         DPRINTFN(3,("uhci_device_control type=0x%02x, request=0x%02x, "
2147                     "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
2148                     req->bmRequestType, req->bRequest, UGETW(req->wValue),
2149                     UGETW(req->wIndex), UGETW(req->wLength),
2150                     addr, endpt));
2151
2152         ls = dev->speed == USB_SPEED_LOW ? UHCI_TD_LS : 0;
2153         isread = req->bmRequestType & UT_READ;
2154         len = UGETW(req->wLength);
2155
2156         setup = upipe->u.ctl.setup;
2157         stat = upipe->u.ctl.stat;
2158         sqh = upipe->u.ctl.sqh;
2159
2160         /* Set up data transaction */
2161         if (len != 0) {
2162                 upipe->nexttoggle = 1;
2163                 err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
2164                                            &xfer->dmabuf, &data, &dataend);
2165                 if (err)
2166                         return (err);
2167                 next = data;
2168                 dataend->link.std = stat;
2169                 dataend->td.td_link = htole32(stat->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2170         } else {
2171                 next = stat;
2172         }
2173         upipe->u.ctl.length = len;
2174
2175         memcpy(KERNADDR(&upipe->u.ctl.reqdma, 0), req, sizeof *req);
2176
2177         setup->link.std = next;
2178         setup->td.td_link = htole32(next->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2179         setup->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2180                 UHCI_TD_ACTIVE);
2181         setup->td.td_token = htole32(UHCI_TD_SETUP(sizeof *req, endpt, addr));
2182         setup->td.td_buffer = htole32(DMAADDR(&upipe->u.ctl.reqdma, 0));
2183         stat->link.std = NULL;
2184         stat->td.td_link = htole32(UHCI_PTR_T);
2185         stat->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2186                 UHCI_TD_ACTIVE | UHCI_TD_IOC);
2187
2188         stat->td.td_token =
2189                 htole32(isread ? UHCI_TD_OUT(0, endpt, addr, 1) :
2190                                  UHCI_TD_IN (0, endpt, addr, 1));
2191         stat->td.td_buffer = htole32(0);
2192
2193 #ifdef USB_DEBUG
2194         if (uhcidebug > 10) {
2195                 DPRINTF(("uhci_device_request: before transfer\n"));
2196                 uhci_dump_tds(setup);
2197         }
2198 #endif
2199
2200         /* Set up interrupt info. */
2201         ii->xfer = xfer;
2202         ii->stdstart = setup;
2203         ii->stdend = stat;
2204 #ifdef DIAGNOSTIC
2205         if (!ii->isdone) {
2206                 kprintf("uhci_device_request: not done, ii=%p\n", ii);
2207         }
2208         ii->isdone = 0;
2209 #endif
2210
2211         sqh->elink = setup;
2212         sqh->qh.qh_elink = htole32(setup->physaddr | UHCI_PTR_TD);
2213
2214         crit_enter();
2215         if (dev->speed == USB_SPEED_LOW)
2216                 uhci_add_ls_ctrl(sc, sqh);
2217         else
2218                 uhci_add_hs_ctrl(sc, sqh);
2219         uhci_add_intr_info(sc, ii);
2220 #ifdef USB_DEBUG
2221         if (uhcidebug > 12) {
2222                 uhci_soft_td_t *std;
2223                 uhci_soft_qh_t *xqh;
2224                 uhci_soft_qh_t *sxqh;
2225                 int maxqh = 0;
2226                 uhci_physaddr_t link;
2227                 DPRINTF(("uhci_enter_ctl_q: follow from [0]\n"));
2228                 for (std = sc->sc_vframes[0].htd, link = 0;
2229                      (link & UHCI_PTR_QH) == 0;
2230                      std = std->link.std) {
2231                         link = le32toh(std->td.td_link);
2232                         uhci_dump_td(std);
2233                 }
2234                 sxqh = (uhci_soft_qh_t *)std;
2235                 uhci_dump_qh(sxqh);
2236                 for (xqh = sxqh;
2237                      xqh != NULL;
2238                      xqh = (maxqh++ == 5 || xqh->hlink == sxqh ||
2239                             xqh->hlink == xqh ? NULL : xqh->hlink)) {
2240                         uhci_dump_qh(xqh);
2241                 }
2242                 DPRINTF(("Enqueued QH:\n"));
2243                 uhci_dump_qh(sqh);
2244                 uhci_dump_tds(sqh->elink);
2245         }
2246 #endif
2247         if (xfer->timeout && !sc->sc_bus.use_polling) {
2248                 callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
2249                             uhci_timeout, ii);
2250         }
2251         xfer->status = USBD_IN_PROGRESS;
2252         crit_exit();
2253
2254         return (USBD_NORMAL_COMPLETION);
2255 }
2256
2257 usbd_status
2258 uhci_device_isoc_transfer(usbd_xfer_handle xfer)
2259 {
2260         usbd_status err;
2261
2262         DPRINTFN(5,("uhci_device_isoc_transfer: xfer=%p\n", xfer));
2263
2264         /* Put it on our queue, */
2265         err = usb_insert_transfer(xfer);
2266
2267         /* bail out on error, */
2268         if (err && err != USBD_IN_PROGRESS)
2269                 return (err);
2270
2271         /* XXX should check inuse here */
2272
2273         /* insert into schedule, */
2274         uhci_device_isoc_enter(xfer);
2275
2276         /* and start if the pipe wasn't running */
2277         if (!err)
2278                 uhci_device_isoc_start(STAILQ_FIRST(&xfer->pipe->queue));
2279
2280         return (err);
2281 }
2282
2283 void
2284 uhci_device_isoc_enter(usbd_xfer_handle xfer)
2285 {
2286         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2287         usbd_device_handle dev = upipe->pipe.device;
2288         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2289         struct iso *iso = &upipe->u.iso;
2290         uhci_soft_td_t *std;
2291         u_int32_t buf, len, status;
2292         int i, next, nframes;
2293
2294         DPRINTFN(5,("uhci_device_isoc_enter: used=%d next=%d xfer=%p "
2295                     "nframes=%d\n",
2296                     iso->inuse, iso->next, xfer, xfer->nframes));
2297
2298         if (sc->sc_dying)
2299                 return;
2300
2301         if (xfer->status == USBD_IN_PROGRESS) {
2302                 /* This request has already been entered into the frame list */
2303                 kprintf("uhci_device_isoc_enter: xfer=%p in frame list\n", xfer);
2304                 /* XXX */
2305         }
2306
2307 #ifdef DIAGNOSTIC
2308         if (iso->inuse >= UHCI_VFRAMELIST_COUNT)
2309                 kprintf("uhci_device_isoc_enter: overflow!\n");
2310 #endif
2311
2312         next = iso->next;
2313         if (next == -1) {
2314                 /* Not in use yet, schedule it a few frames ahead. */
2315                 next = (UREAD2(sc, UHCI_FRNUM) + 3) % UHCI_VFRAMELIST_COUNT;
2316                 DPRINTFN(2,("uhci_device_isoc_enter: start next=%d\n", next));
2317         }
2318
2319         xfer->status = USBD_IN_PROGRESS;
2320         UXFER(xfer)->curframe = next;
2321
2322         buf = DMAADDR(&xfer->dmabuf, 0);
2323         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(0) |
2324                                      UHCI_TD_ACTIVE |
2325                                      UHCI_TD_IOS);
2326         nframes = xfer->nframes;
2327         crit_enter();
2328         for (i = 0; i < nframes; i++) {
2329                 std = iso->stds[next];
2330                 if (++next >= UHCI_VFRAMELIST_COUNT)
2331                         next = 0;
2332                 len = xfer->frlengths[i];
2333                 std->td.td_buffer = htole32(buf);
2334                 if (i == nframes - 1)
2335                         status |= UHCI_TD_IOC;
2336                 std->td.td_status = htole32(status);
2337                 std->td.td_token &= htole32(~UHCI_TD_MAXLEN_MASK);
2338                 std->td.td_token |= htole32(UHCI_TD_SET_MAXLEN(len));
2339 #ifdef USB_DEBUG
2340                 if (uhcidebug > 5) {
2341                         DPRINTFN(5,("uhci_device_isoc_enter: TD %d\n", i));
2342                         uhci_dump_td(std);
2343                 }
2344 #endif
2345                 buf += len;
2346         }
2347         iso->next = next;
2348         iso->inuse += xfer->nframes;
2349
2350         crit_exit();
2351 }
2352
2353 usbd_status
2354 uhci_device_isoc_start(usbd_xfer_handle xfer)
2355 {
2356         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2357         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
2358         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2359         uhci_soft_td_t *end;
2360         int i;
2361
2362         DPRINTFN(5,("uhci_device_isoc_start: xfer=%p\n", xfer));
2363
2364         if (sc->sc_dying)
2365                 return (USBD_IOERROR);
2366
2367 #ifdef DIAGNOSTIC
2368         if (xfer->status != USBD_IN_PROGRESS)
2369                 kprintf("uhci_device_isoc_start: not in progress %p\n", xfer);
2370 #endif
2371
2372         /* Find the last TD */
2373         i = UXFER(xfer)->curframe + xfer->nframes;
2374         if (i >= UHCI_VFRAMELIST_COUNT)
2375                 i -= UHCI_VFRAMELIST_COUNT;
2376         end = upipe->u.iso.stds[i];
2377
2378 #ifdef DIAGNOSTIC
2379         if (end == NULL) {
2380                 kprintf("uhci_device_isoc_start: end == NULL\n");
2381                 return (USBD_INVAL);
2382         }
2383 #endif
2384
2385         crit_enter();
2386
2387         /* Set up interrupt info. */
2388         ii->xfer = xfer;
2389         ii->stdstart = end;
2390         ii->stdend = end;
2391 #ifdef DIAGNOSTIC
2392         if (!ii->isdone)
2393                 kprintf("uhci_device_isoc_start: not done, ii=%p\n", ii);
2394         ii->isdone = 0;
2395 #endif
2396         uhci_add_intr_info(sc, ii);
2397
2398         crit_exit();
2399
2400         return (USBD_IN_PROGRESS);
2401 }
2402
2403 void
2404 uhci_device_isoc_abort(usbd_xfer_handle xfer)
2405 {
2406         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2407         uhci_soft_td_t **stds = upipe->u.iso.stds;
2408         uhci_soft_td_t *std;
2409         int i, n, nframes, maxlen, len;
2410
2411         crit_enter();
2412
2413         /* Transfer is already done. */
2414         if (xfer->status != USBD_NOT_STARTED &&
2415             xfer->status != USBD_IN_PROGRESS) {
2416                 crit_exit();
2417                 return;
2418         }
2419
2420         /* Give xfer the requested abort code. */
2421         xfer->status = USBD_CANCELLED;
2422
2423         /* make hardware ignore it, */
2424         nframes = xfer->nframes;
2425         n = UXFER(xfer)->curframe;
2426         maxlen = 0;
2427         for (i = 0; i < nframes; i++) {
2428                 std = stds[n];
2429                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
2430                 len = UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token));
2431                 if (len > maxlen)
2432                         maxlen = len;
2433                 if (++n >= UHCI_VFRAMELIST_COUNT)
2434                         n = 0;
2435         }
2436
2437         /* and wait until we are sure the hardware has finished. */
2438         delay(maxlen);
2439
2440 #ifdef DIAGNOSTIC
2441         UXFER(xfer)->iinfo.isdone = 1;
2442 #endif
2443         /* Run callback and remove from interrupt list. */
2444         usb_transfer_complete(xfer);
2445
2446         crit_exit();
2447 }
2448
2449 void
2450 uhci_device_isoc_close(usbd_pipe_handle pipe)
2451 {
2452         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2453         usbd_device_handle dev = upipe->pipe.device;
2454         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2455         uhci_soft_td_t *std, *vstd;
2456         struct iso *iso;
2457         int i;
2458
2459         /*
2460          * Make sure all TDs are marked as inactive.
2461          * Wait for completion.
2462          * Unschedule.
2463          * Deallocate.
2464          */
2465         iso = &upipe->u.iso;
2466
2467         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++)
2468                 iso->stds[i]->td.td_status &= htole32(~UHCI_TD_ACTIVE);
2469         usb_delay_ms(&sc->sc_bus, 2); /* wait for completion */
2470
2471         crit_enter();
2472         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2473                 std = iso->stds[i];
2474                 for (vstd = sc->sc_vframes[i].htd;
2475                      vstd != NULL && vstd->link.std != std;
2476                      vstd = vstd->link.std)
2477                         ;
2478                 if (vstd == NULL) {
2479                         /*panic*/
2480                         kprintf("uhci_device_isoc_close: %p not found\n", std);
2481                         crit_exit();
2482                         return;
2483                 }
2484                 vstd->link = std->link;
2485                 vstd->td.td_link = std->td.td_link;
2486                 uhci_free_std(sc, std);
2487         }
2488         crit_exit();
2489
2490         kfree(iso->stds, M_USBHC);
2491 }
2492
2493 usbd_status
2494 uhci_setup_isoc(usbd_pipe_handle pipe)
2495 {
2496         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2497         usbd_device_handle dev = upipe->pipe.device;
2498         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2499         int addr = upipe->pipe.device->address;
2500         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2501         int rd = UE_GET_DIR(endpt) == UE_DIR_IN;
2502         uhci_soft_td_t *std, *vstd;
2503         u_int32_t token;
2504         struct iso *iso;
2505         int i;
2506
2507         iso = &upipe->u.iso;
2508         iso->stds = kmalloc(UHCI_VFRAMELIST_COUNT * sizeof (uhci_soft_td_t *),
2509                            M_USBHC, M_INTWAIT);
2510
2511         token = rd ? UHCI_TD_IN (0, endpt, addr, 0) :
2512                      UHCI_TD_OUT(0, endpt, addr, 0);
2513
2514         /* Allocate the TDs and mark as inactive; */
2515         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2516                 std = uhci_alloc_std(sc);
2517                 if (std == 0)
2518                         goto bad;
2519                 std->td.td_status = htole32(UHCI_TD_IOS); /* iso, inactive */
2520                 std->td.td_token = htole32(token);
2521                 iso->stds[i] = std;
2522         }
2523
2524         /* Insert TDs into schedule. */
2525         crit_enter();
2526         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2527                 std = iso->stds[i];
2528                 vstd = sc->sc_vframes[i].htd;
2529                 std->link = vstd->link;
2530                 std->td.td_link = vstd->td.td_link;
2531                 vstd->link.std = std;
2532                 vstd->td.td_link = htole32(std->physaddr | UHCI_PTR_TD);
2533         }
2534         crit_exit();
2535
2536         iso->next = -1;
2537         iso->inuse = 0;
2538
2539         return (USBD_NORMAL_COMPLETION);
2540
2541  bad:
2542         while (--i >= 0)
2543                 uhci_free_std(sc, iso->stds[i]);
2544         kfree(iso->stds, M_USBHC);
2545         return (USBD_NOMEM);
2546 }
2547
2548 void
2549 uhci_device_isoc_done(usbd_xfer_handle xfer)
2550 {
2551         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2552
2553         DPRINTFN(4, ("uhci_isoc_done: length=%d\n", xfer->actlen));
2554
2555         if (ii->xfer != xfer)
2556                 /* Not on interrupt list, ignore it. */
2557                 return;
2558
2559         if (!uhci_active_intr_info(ii))
2560                 return;
2561
2562 #ifdef DIAGNOSTIC
2563         if (xfer->busy_free != XFER_BUSY) {
2564                 kprintf("uhci_device_isoc_done: xfer=%p not busy 0x%08x\n",
2565                        xfer, xfer->busy_free);
2566                 return;
2567         }
2568
2569         if (ii->stdend == NULL) {
2570                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2571 #ifdef USB_DEBUG
2572                 uhci_dump_ii(ii);
2573 #endif
2574                 return;
2575         }
2576 #endif
2577
2578         /* Turn off the interrupt since it is active even if the TD is not. */
2579         ii->stdend->td.td_status &= htole32(~UHCI_TD_IOC);
2580
2581         uhci_del_intr_info(ii); /* remove from active list */
2582
2583 #ifdef DIAGNOSTIC
2584         if (ii->stdend == NULL) {
2585                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2586 #ifdef USB_DEBUG
2587                 uhci_dump_ii(ii);
2588 #endif
2589                 return;
2590         }
2591 #endif
2592 }
2593
2594 void
2595 uhci_device_intr_done(usbd_xfer_handle xfer)
2596 {
2597         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2598         uhci_softc_t *sc = ii->sc;
2599         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2600         uhci_soft_qh_t *sqh;
2601         int i, npoll;
2602
2603         DPRINTFN(5, ("uhci_device_intr_done: length=%d\n", xfer->actlen));
2604
2605         npoll = upipe->u.intr.npoll;
2606         for(i = 0; i < npoll; i++) {
2607                 sqh = upipe->u.intr.qhs[i];
2608                 sqh->elink = NULL;
2609                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2610         }
2611         uhci_free_std_chain(sc, ii->stdstart, NULL);
2612
2613         /* XXX Wasteful. */
2614         if (xfer->pipe->repeat) {
2615                 uhci_soft_td_t *data, *dataend;
2616
2617                 DPRINTFN(5,("uhci_device_intr_done: requeueing\n"));
2618
2619                 /* This alloc cannot fail since we freed the chain above. */
2620                 uhci_alloc_std_chain(upipe, sc, xfer->length,
2621                                      upipe->u.intr.isread, xfer->flags,
2622                                      &xfer->dmabuf, &data, &dataend);
2623                 dataend->td.td_status |= htole32(UHCI_TD_IOC);
2624
2625 #ifdef USB_DEBUG
2626                 if (uhcidebug > 10) {
2627                         DPRINTF(("uhci_device_intr_done: data(1)\n"));
2628                         uhci_dump_tds(data);
2629                         uhci_dump_qh(upipe->u.intr.qhs[0]);
2630                 }
2631 #endif
2632
2633                 ii->stdstart = data;
2634                 ii->stdend = dataend;
2635 #ifdef DIAGNOSTIC
2636                 if (!ii->isdone) {
2637                         kprintf("uhci_device_intr_done: not done, ii=%p\n", ii);
2638                 }
2639                 ii->isdone = 0;
2640 #endif
2641                 for (i = 0; i < npoll; i++) {
2642                         sqh = upipe->u.intr.qhs[i];
2643                         sqh->elink = data;
2644                         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2645                 }
2646                 xfer->status = USBD_IN_PROGRESS;
2647                 /* The ii is already on the examined list, just leave it. */
2648         } else {
2649                 DPRINTFN(5,("uhci_device_intr_done: removing\n"));
2650                 if (uhci_active_intr_info(ii))
2651                         uhci_del_intr_info(ii);
2652         }
2653 }
2654
2655 /* Deallocate request data structures */
2656 void
2657 uhci_device_ctrl_done(usbd_xfer_handle xfer)
2658 {
2659         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2660         uhci_softc_t *sc = ii->sc;
2661         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2662
2663 #ifdef DIAGNOSTIC
2664         if (!(xfer->rqflags & URQ_REQUEST))
2665                 panic("uhci_device_ctrl_done: not a request");
2666 #endif
2667
2668         if (!uhci_active_intr_info(ii))
2669                 return;
2670
2671         uhci_del_intr_info(ii); /* remove from active list */
2672
2673         if (upipe->pipe.device->speed == USB_SPEED_LOW)
2674                 uhci_remove_ls_ctrl(sc, upipe->u.ctl.sqh);
2675         else
2676                 uhci_remove_hs_ctrl(sc, upipe->u.ctl.sqh);
2677
2678         if (upipe->u.ctl.length != 0)
2679                 uhci_free_std_chain(sc, ii->stdstart->link.std, ii->stdend);
2680
2681         DPRINTFN(5, ("uhci_device_ctrl_done: length=%d\n", xfer->actlen));
2682 }
2683
2684 /* Deallocate request data structures */
2685 void
2686 uhci_device_bulk_done(usbd_xfer_handle xfer)
2687 {
2688         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2689         uhci_softc_t *sc = ii->sc;
2690         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2691
2692         DPRINTFN(5,("uhci_device_bulk_done: xfer=%p ii=%p sc=%p upipe=%p\n",
2693                     xfer, ii, sc, upipe));
2694
2695         if (!uhci_active_intr_info(ii))
2696                 return;
2697
2698         uhci_del_intr_info(ii); /* remove from active list */
2699
2700         uhci_remove_bulk(sc, upipe->u.bulk.sqh);
2701
2702         uhci_free_std_chain(sc, ii->stdstart, NULL);
2703
2704         DPRINTFN(5, ("uhci_device_bulk_done: length=%d\n", xfer->actlen));
2705 }
2706
2707 /* Add interrupt QH, called with vflock. */
2708 void
2709 uhci_add_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2710 {
2711         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2712         uhci_soft_qh_t *eqh;
2713
2714         DPRINTFN(4, ("uhci_add_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2715
2716         eqh = vf->eqh;
2717         sqh->hlink       = eqh->hlink;
2718         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
2719         eqh->hlink       = sqh;
2720         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
2721         vf->eqh = sqh;
2722         vf->bandwidth++;
2723 }
2724
2725 /* Remove interrupt QH. */
2726 void
2727 uhci_remove_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2728 {
2729         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2730         uhci_soft_qh_t *pqh;
2731
2732         DPRINTFN(4, ("uhci_remove_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2733
2734         /* See comment in uhci_remove_ctrl() */
2735         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
2736                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2737                 delay(UHCI_QH_REMOVE_DELAY);
2738         }
2739
2740         pqh = uhci_find_prev_qh(vf->hqh, sqh);
2741         pqh->hlink       = sqh->hlink;
2742         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
2743         delay(UHCI_QH_REMOVE_DELAY);
2744         if (vf->eqh == sqh)
2745                 vf->eqh = pqh;
2746         vf->bandwidth--;
2747 }
2748
2749 usbd_status
2750 uhci_device_setintr(uhci_softc_t *sc, struct uhci_pipe *upipe, int ival)
2751 {
2752         uhci_soft_qh_t *sqh;
2753         int i, npoll;
2754         u_int bestbw, bw, bestoffs, offs;
2755
2756         DPRINTFN(2, ("uhci_device_setintr: pipe=%p\n", upipe));
2757         if (ival == 0) {
2758                 kprintf("uhci_setintr: 0 interval\n");
2759                 return (USBD_INVAL);
2760         }
2761
2762         if (ival > UHCI_VFRAMELIST_COUNT)
2763                 ival = UHCI_VFRAMELIST_COUNT;
2764         npoll = (UHCI_VFRAMELIST_COUNT + ival - 1) / ival;
2765         DPRINTFN(2, ("uhci_device_setintr: ival=%d npoll=%d\n", ival, npoll));
2766
2767         upipe->u.intr.npoll = npoll;
2768         upipe->u.intr.qhs =
2769                 kmalloc(npoll * sizeof(uhci_soft_qh_t *), M_USBHC, M_INTWAIT);
2770
2771         /*
2772          * Figure out which offset in the schedule that has most
2773          * bandwidth left over.
2774          */
2775 #define MOD(i) ((i) & (UHCI_VFRAMELIST_COUNT-1))
2776         for (bestoffs = offs = 0, bestbw = ~0; offs < ival; offs++) {
2777                 for (bw = i = 0; i < npoll; i++)
2778                         bw += sc->sc_vframes[MOD(i * ival + offs)].bandwidth;
2779                 if (bw < bestbw) {
2780                         bestbw = bw;
2781                         bestoffs = offs;
2782                 }
2783         }
2784         DPRINTFN(1, ("uhci_device_setintr: bw=%d offs=%d\n", bestbw, bestoffs));
2785
2786         for(i = 0; i < npoll; i++) {
2787                 upipe->u.intr.qhs[i] = sqh = uhci_alloc_sqh(sc);
2788                 sqh->elink = NULL;
2789                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2790                 sqh->pos = MOD(i * ival + bestoffs);
2791         }
2792 #undef MOD
2793
2794         crit_enter();
2795         /* Enter QHs into the controller data structures. */
2796         for(i = 0; i < npoll; i++)
2797                 uhci_add_intr(sc, upipe->u.intr.qhs[i]);
2798         crit_exit();
2799
2800         DPRINTFN(5, ("uhci_device_setintr: returns %p\n", upipe));
2801         return (USBD_NORMAL_COMPLETION);
2802 }
2803
2804 /* Open a new pipe. */
2805 usbd_status
2806 uhci_open(usbd_pipe_handle pipe)
2807 {
2808         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2809         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2810         usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
2811         usbd_status err;
2812         int ival;
2813
2814         DPRINTFN(1, ("uhci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
2815                      pipe, pipe->device->address,
2816                      ed->bEndpointAddress, sc->sc_addr));
2817
2818         upipe->aborting = 0;
2819         upipe->nexttoggle = pipe->endpoint->savedtoggle;
2820
2821         if (pipe->device->address == sc->sc_addr) {
2822                 switch (ed->bEndpointAddress) {
2823                 case USB_CONTROL_ENDPOINT:
2824                         pipe->methods = &uhci_root_ctrl_methods;
2825                         break;
2826                 case UE_DIR_IN | UHCI_INTR_ENDPT:
2827                         pipe->methods = &uhci_root_intr_methods;
2828                         break;
2829                 default:
2830                         return (USBD_INVAL);
2831                 }
2832         } else {
2833                 switch (ed->bmAttributes & UE_XFERTYPE) {
2834                 case UE_CONTROL:
2835                         pipe->methods = &uhci_device_ctrl_methods;
2836                         upipe->u.ctl.sqh = uhci_alloc_sqh(sc);
2837                         if (upipe->u.ctl.sqh == NULL)
2838                                 goto bad;
2839                         upipe->u.ctl.setup = uhci_alloc_std(sc);
2840                         if (upipe->u.ctl.setup == NULL) {
2841                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2842                                 goto bad;
2843                         }
2844                         upipe->u.ctl.stat = uhci_alloc_std(sc);
2845                         if (upipe->u.ctl.stat == NULL) {
2846                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2847                                 uhci_free_std(sc, upipe->u.ctl.setup);
2848                                 goto bad;
2849                         }
2850                         err = usb_allocmem(&sc->sc_bus,
2851                                   sizeof(usb_device_request_t),
2852                                   0, &upipe->u.ctl.reqdma);
2853                         if (err) {
2854                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2855                                 uhci_free_std(sc, upipe->u.ctl.setup);
2856                                 uhci_free_std(sc, upipe->u.ctl.stat);
2857                                 goto bad;
2858                         }
2859                         break;
2860                 case UE_INTERRUPT:
2861                         pipe->methods = &uhci_device_intr_methods;
2862                         ival = pipe->interval;
2863                         if (ival == USBD_DEFAULT_INTERVAL)
2864                                 ival = ed->bInterval;
2865                         return (uhci_device_setintr(sc, upipe, ival));
2866                 case UE_ISOCHRONOUS:
2867                         pipe->methods = &uhci_device_isoc_methods;
2868                         return (uhci_setup_isoc(pipe));
2869                 case UE_BULK:
2870                         pipe->methods = &uhci_device_bulk_methods;
2871                         upipe->u.bulk.sqh = uhci_alloc_sqh(sc);
2872                         if (upipe->u.bulk.sqh == NULL)
2873                                 goto bad;
2874                         break;
2875                 }
2876         }
2877         return (USBD_NORMAL_COMPLETION);
2878
2879  bad:
2880         return (USBD_NOMEM);
2881 }
2882
2883 /*
2884  * Data structures and routines to emulate the root hub.
2885  */
2886 usb_device_descriptor_t uhci_devd = {
2887         USB_DEVICE_DESCRIPTOR_SIZE,
2888         UDESC_DEVICE,           /* type */
2889         {0x00, 0x01},           /* USB version */
2890         UDCLASS_HUB,            /* class */
2891         UDSUBCLASS_HUB,         /* subclass */
2892         UDPROTO_FSHUB,          /* protocol */
2893         64,                     /* max packet */
2894         {0},{0},{0x00,0x01},    /* device id */
2895         1,2,0,                  /* string indicies */
2896         1                       /* # of configurations */
2897 };
2898
2899 usb_config_descriptor_t uhci_confd = {
2900         USB_CONFIG_DESCRIPTOR_SIZE,
2901         UDESC_CONFIG,
2902         {USB_CONFIG_DESCRIPTOR_SIZE +
2903          USB_INTERFACE_DESCRIPTOR_SIZE +
2904          USB_ENDPOINT_DESCRIPTOR_SIZE},
2905         1,
2906         1,
2907         0,
2908         UC_SELF_POWERED,
2909         0                       /* max power */
2910 };
2911
2912 usb_interface_descriptor_t uhci_ifcd = {
2913         USB_INTERFACE_DESCRIPTOR_SIZE,
2914         UDESC_INTERFACE,
2915         0,
2916         0,
2917         1,
2918         UICLASS_HUB,
2919         UISUBCLASS_HUB,
2920         UIPROTO_FSHUB,
2921         0
2922 };
2923
2924 usb_endpoint_descriptor_t uhci_endpd = {
2925         USB_ENDPOINT_DESCRIPTOR_SIZE,
2926         UDESC_ENDPOINT,
2927         UE_DIR_IN | UHCI_INTR_ENDPT,
2928         UE_INTERRUPT,
2929         {8},
2930         255
2931 };
2932
2933 usb_hub_descriptor_t uhci_hubd_piix = {
2934         USB_HUB_DESCRIPTOR_SIZE,
2935         UDESC_HUB,
2936         2,
2937         { UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL, 0 },
2938         50,                     /* power on to power good */
2939         0,
2940         { 0x00 },               /* both ports are removable */
2941 };
2942
2943 int
2944 uhci_str(usb_string_descriptor_t *p, int l, char *s)
2945 {
2946         int i;
2947
2948         if (l == 0)
2949                 return (0);
2950         p->bLength = 2 * strlen(s) + 2;
2951         if (l == 1)
2952                 return (1);
2953         p->bDescriptorType = UDESC_STRING;
2954         l -= 2;
2955         for (i = 0; s[i] && l > 1; i++, l -= 2)
2956                 USETW2(p->bString[i], 0, s[i]);
2957         return (2*i+2);
2958 }
2959
2960 /*
2961  * The USB hub protocol requires that SET_FEATURE(PORT_RESET) also
2962  * enables the port, and also states that SET_FEATURE(PORT_ENABLE)
2963  * should not be used by the USB subsystem.  As we cannot issue a
2964  * SET_FEATURE(PORT_ENABLE) externally, we must ensure that the port
2965  * will be enabled as part of the reset.
2966  *
2967  * On the VT83C572, the port cannot be successfully enabled until the
2968  * outstanding "port enable change" and "connection status change"
2969  * events have been reset.
2970  */
2971 static usbd_status
2972 uhci_portreset(uhci_softc_t *sc, int index)
2973 {
2974         int lim, port, x;
2975
2976         if (index == 1)
2977                 port = UHCI_PORTSC1;
2978         else if (index == 2)
2979                 port = UHCI_PORTSC2;
2980         else
2981                 return (USBD_IOERROR);
2982
2983         x = URWMASK(UREAD2(sc, port));
2984         UWRITE2(sc, port, x | UHCI_PORTSC_PR);
2985
2986         usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY);
2987
2988         DPRINTFN(3,("uhci port %d reset, status0 = 0x%04x\n",
2989                     index, UREAD2(sc, port)));
2990
2991         x = URWMASK(UREAD2(sc, port));
2992         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
2993
2994         delay(100);
2995
2996         DPRINTFN(3,("uhci port %d reset, status1 = 0x%04x\n",
2997                     index, UREAD2(sc, port)));
2998
2999         x = URWMASK(UREAD2(sc, port));
3000         UWRITE2(sc, port, x  | UHCI_PORTSC_PE);
3001
3002         for (lim = 10; --lim > 0;) {
3003                 usb_delay_ms(&sc->sc_bus, USB_PORT_RESET_DELAY);
3004
3005                 x = UREAD2(sc, port);
3006
3007                 DPRINTFN(3,("uhci port %d iteration %u, status = 0x%04x\n",
3008                             index, lim, x));
3009
3010                 if (!(x & UHCI_PORTSC_CCS)) {
3011                         /*
3012                          * No device is connected (or was disconnected
3013                          * during reset).  Consider the port reset.
3014                          * The delay must be long enough to ensure on
3015                          * the initial iteration that the device
3016                          * connection will have been registered.  50ms
3017                          * appears to be sufficient, but 20ms is not.
3018                          */
3019                         DPRINTFN(3,("uhci port %d loop %u, device detached\n",
3020                                     index, lim));
3021                         break;
3022                 }
3023
3024                 if (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)) {
3025                         /*
3026                          * Port enabled changed and/or connection
3027                          * status changed were set.  Reset either or
3028                          * both raised flags (by writing a 1 to that
3029                          * bit), and wait again for state to settle.
3030                          */
3031                         UWRITE2(sc, port, URWMASK(x) |
3032                                 (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)));
3033                         continue;
3034                 }
3035
3036                 if (x & UHCI_PORTSC_PE)
3037                         /* Port is enabled */
3038                         break;
3039
3040                 UWRITE2(sc, port, URWMASK(x) | UHCI_PORTSC_PE);
3041         }
3042
3043         DPRINTFN(3,("uhci port %d reset, status2 = 0x%04x\n",
3044                     index, UREAD2(sc, port)));
3045
3046         if (lim <= 0) {
3047                 DPRINTFN(1,("uhci port %d reset timed out\n", index));
3048                 return (USBD_TIMEOUT);
3049         }
3050
3051         sc->sc_isreset = 1;
3052         return (USBD_NORMAL_COMPLETION);
3053 }
3054
3055 /*
3056  * Simulate a hardware hub by handling all the necessary requests.
3057  */
3058 usbd_status
3059 uhci_root_ctrl_transfer(usbd_xfer_handle xfer)
3060 {
3061         usbd_status err;
3062
3063         /* Insert last in queue. */
3064         err = usb_insert_transfer(xfer);
3065         if (err)
3066                 return (err);
3067
3068         /*
3069          * Pipe isn't running (otherwise err would be USBD_INPROG),
3070          * so start it first.
3071          */
3072         return (uhci_root_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
3073 }
3074
3075 usbd_status
3076 uhci_root_ctrl_start(usbd_xfer_handle xfer)
3077 {
3078         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3079         usb_device_request_t *req;
3080         void *buf = NULL;
3081         int port, x;
3082         int len, value, index, status, change, l, totlen = 0;
3083         usb_port_status_t ps;
3084         usbd_status err;
3085
3086         if (sc->sc_dying)
3087                 return (USBD_IOERROR);
3088
3089 #ifdef DIAGNOSTIC
3090         if (!(xfer->rqflags & URQ_REQUEST))
3091                 panic("uhci_root_ctrl_transfer: not a request");
3092 #endif
3093         req = &xfer->request;
3094
3095         DPRINTFN(2,("uhci_root_ctrl_control type=0x%02x request=%02x\n",
3096                     req->bmRequestType, req->bRequest));
3097
3098         len = UGETW(req->wLength);
3099         value = UGETW(req->wValue);
3100         index = UGETW(req->wIndex);
3101
3102         if (len != 0)
3103                 buf = KERNADDR(&xfer->dmabuf, 0);
3104
3105 #define C(x,y) ((x) | ((y) << 8))
3106         switch(C(req->bRequest, req->bmRequestType)) {
3107         case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
3108         case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
3109         case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
3110                 /*
3111                  * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
3112                  * for the integrated root hub.
3113                  */
3114                 break;
3115         case C(UR_GET_CONFIG, UT_READ_DEVICE):
3116                 if (len > 0) {
3117                         *(u_int8_t *)buf = sc->sc_conf;
3118                         totlen = 1;
3119                 }
3120                 break;
3121         case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
3122                 DPRINTFN(2,("uhci_root_ctrl_control wValue=0x%04x\n", value));
3123                 switch(value >> 8) {
3124                 case UDESC_DEVICE:
3125                         if ((value & 0xff) != 0) {
3126                                 err = USBD_IOERROR;
3127                                 goto ret;
3128                         }
3129                         totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
3130                         USETW(uhci_devd.idVendor, sc->sc_id_vendor);
3131                         memcpy(buf, &uhci_devd, l);
3132                         break;
3133                 case UDESC_CONFIG:
3134                         if ((value & 0xff) != 0) {
3135                                 err = USBD_IOERROR;
3136                                 goto ret;
3137                         }
3138                         totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
3139                         memcpy(buf, &uhci_confd, l);
3140                         buf = (char *)buf + l;
3141                         len -= l;
3142                         l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
3143                         totlen += l;
3144                         memcpy(buf, &uhci_ifcd, l);
3145                         buf = (char *)buf + l;
3146                         len -= l;
3147                         l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
3148                         totlen += l;
3149                         memcpy(buf, &uhci_endpd, l);
3150                         break;
3151                 case UDESC_STRING:
3152                         if (len == 0)
3153                                 break;
3154                         *(u_int8_t *)buf = 0;
3155                         totlen = 1;
3156                         switch (value & 0xff) {
3157                         case 1: /* Vendor */
3158                                 totlen = uhci_str(buf, len, sc->sc_vendor);
3159                                 break;
3160                         case 2: /* Product */
3161                                 totlen = uhci_str(buf, len, "UHCI root hub");
3162                                 break;
3163                         }
3164                         break;
3165                 default:
3166                         err = USBD_IOERROR;
3167                         goto ret;
3168                 }
3169                 break;
3170         case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
3171                 if (len > 0) {
3172                         *(u_int8_t *)buf = 0;
3173                         totlen = 1;
3174                 }
3175                 break;
3176         case C(UR_GET_STATUS, UT_READ_DEVICE):
3177                 if (len > 1) {
3178                         USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
3179                         totlen = 2;
3180                 }
3181                 break;
3182         case C(UR_GET_STATUS, UT_READ_INTERFACE):
3183         case C(UR_GET_STATUS, UT_READ_ENDPOINT):
3184                 if (len > 1) {
3185                         USETW(((usb_status_t *)buf)->wStatus, 0);
3186                         totlen = 2;
3187                 }
3188                 break;
3189         case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
3190                 if (value >= USB_MAX_DEVICES) {
3191                         err = USBD_IOERROR;
3192                         goto ret;
3193                 }
3194                 sc->sc_addr = value;
3195                 break;
3196         case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
3197                 if (value != 0 && value != 1) {
3198                         err = USBD_IOERROR;
3199                         goto ret;
3200                 }
3201                 sc->sc_conf = value;
3202                 break;
3203         case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
3204                 break;
3205         case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
3206         case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
3207         case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
3208                 err = USBD_IOERROR;
3209                 goto ret;
3210         case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
3211                 break;
3212         case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
3213                 break;
3214         /* Hub requests */
3215         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
3216                 break;
3217         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
3218                 DPRINTFN(3, ("uhci_root_ctrl_control: UR_CLEAR_PORT_FEATURE "
3219                              "port=%d feature=%d\n",
3220                              index, value));
3221                 if (index == 1)
3222                         port = UHCI_PORTSC1;
3223                 else if (index == 2)
3224                         port = UHCI_PORTSC2;
3225                 else {
3226                         err = USBD_IOERROR;
3227                         goto ret;
3228                 }
3229                 switch(value) {
3230                 case UHF_PORT_ENABLE:
3231                         x = URWMASK(UREAD2(sc, port));
3232                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PE);
3233                         break;
3234                 case UHF_PORT_SUSPEND:
3235                         x = URWMASK(UREAD2(sc, port));
3236                         UWRITE2(sc, port, x & ~UHCI_PORTSC_SUSP);
3237                         break;
3238                 case UHF_PORT_RESET:
3239                         x = URWMASK(UREAD2(sc, port));
3240                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
3241                         break;
3242                 case UHF_C_PORT_CONNECTION:
3243                         x = URWMASK(UREAD2(sc, port));
3244                         UWRITE2(sc, port, x | UHCI_PORTSC_CSC);
3245                         break;
3246                 case UHF_C_PORT_ENABLE:
3247                         x = URWMASK(UREAD2(sc, port));
3248                         UWRITE2(sc, port, x | UHCI_PORTSC_POEDC);
3249                         break;
3250                 case UHF_C_PORT_OVER_CURRENT:
3251                         x = URWMASK(UREAD2(sc, port));
3252                         UWRITE2(sc, port, x | UHCI_PORTSC_OCIC);
3253                         break;
3254                 case UHF_C_PORT_RESET:
3255                         sc->sc_isreset = 0;
3256                         err = USBD_NORMAL_COMPLETION;
3257                         goto ret;
3258                 case UHF_PORT_CONNECTION:
3259                 case UHF_PORT_OVER_CURRENT:
3260                 case UHF_PORT_POWER:
3261                 case UHF_PORT_LOW_SPEED:
3262                 case UHF_C_PORT_SUSPEND:
3263                 default:
3264                         err = USBD_IOERROR;
3265                         goto ret;
3266                 }
3267                 break;
3268         case C(UR_GET_BUS_STATE, UT_READ_CLASS_OTHER):
3269                 if (index == 1)
3270                         port = UHCI_PORTSC1;
3271                 else if (index == 2)
3272                         port = UHCI_PORTSC2;
3273                 else {
3274                         err = USBD_IOERROR;
3275                         goto ret;
3276                 }
3277                 if (len > 0) {
3278                         *(u_int8_t *)buf =
3279                                 (UREAD2(sc, port) & UHCI_PORTSC_LS) >>
3280                                 UHCI_PORTSC_LS_SHIFT;
3281                         totlen = 1;
3282                 }
3283                 break;
3284         case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
3285                 if ((value & 0xff) != 0) {
3286                         err = USBD_IOERROR;
3287                         goto ret;
3288                 }
3289                 l = min(len, USB_HUB_DESCRIPTOR_SIZE);
3290                 totlen = l;
3291                 memcpy(buf, &uhci_hubd_piix, l);
3292                 break;
3293         case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
3294                 if (len != 4) {
3295                         err = USBD_IOERROR;
3296                         goto ret;
3297                 }
3298                 memset(buf, 0, len);
3299                 totlen = len;
3300                 break;
3301         case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
3302                 if (index == 1)
3303                         port = UHCI_PORTSC1;
3304                 else if (index == 2)
3305                         port = UHCI_PORTSC2;
3306                 else {
3307                         err = USBD_IOERROR;
3308                         goto ret;
3309                 }
3310                 if (len != 4) {
3311                         err = USBD_IOERROR;
3312                         goto ret;
3313                 }
3314                 x = UREAD2(sc, port);
3315                 status = change = 0;
3316                 if (x & UHCI_PORTSC_CCS)
3317                         status |= UPS_CURRENT_CONNECT_STATUS;
3318                 if (x & UHCI_PORTSC_CSC)
3319                         change |= UPS_C_CONNECT_STATUS;
3320                 if (x & UHCI_PORTSC_PE)
3321                         status |= UPS_PORT_ENABLED;
3322                 if (x & UHCI_PORTSC_POEDC)
3323                         change |= UPS_C_PORT_ENABLED;
3324                 if (x & UHCI_PORTSC_OCI)
3325                         status |= UPS_OVERCURRENT_INDICATOR;
3326                 if (x & UHCI_PORTSC_OCIC)
3327                         change |= UPS_C_OVERCURRENT_INDICATOR;
3328                 if (x & UHCI_PORTSC_SUSP)
3329                         status |= UPS_SUSPEND;
3330                 if (x & UHCI_PORTSC_LSDA)
3331                         status |= UPS_LOW_SPEED;
3332                 status |= UPS_PORT_POWER;
3333                 if (sc->sc_isreset)
3334                         change |= UPS_C_PORT_RESET;
3335                 USETW(ps.wPortStatus, status);
3336                 USETW(ps.wPortChange, change);
3337                 l = min(len, sizeof ps);
3338                 memcpy(buf, &ps, l);
3339                 totlen = l;
3340                 break;
3341         case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
3342                 err = USBD_IOERROR;
3343                 goto ret;
3344         case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
3345                 break;
3346         case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
3347                 if (index == 1)
3348                         port = UHCI_PORTSC1;
3349                 else if (index == 2)
3350                         port = UHCI_PORTSC2;
3351                 else {
3352                         err = USBD_IOERROR;
3353                         goto ret;
3354                 }
3355                 switch(value) {
3356                 case UHF_PORT_ENABLE:
3357                         x = URWMASK(UREAD2(sc, port));
3358                         UWRITE2(sc, port, x | UHCI_PORTSC_PE);
3359                         break;
3360                 case UHF_PORT_SUSPEND:
3361                         x = URWMASK(UREAD2(sc, port));
3362                         UWRITE2(sc, port, x | UHCI_PORTSC_SUSP);
3363                         break;
3364                 case UHF_PORT_RESET:
3365                         err = uhci_portreset(sc, index);
3366                         goto ret;
3367                 case UHF_PORT_POWER:
3368                         /* Pretend we turned on power */
3369                         err = USBD_NORMAL_COMPLETION;
3370                         goto ret;
3371                 case UHF_C_PORT_CONNECTION:
3372                 case UHF_C_PORT_ENABLE:
3373                 case UHF_C_PORT_OVER_CURRENT:
3374                 case UHF_PORT_CONNECTION:
3375                 case UHF_PORT_OVER_CURRENT:
3376                 case UHF_PORT_LOW_SPEED:
3377                 case UHF_C_PORT_SUSPEND:
3378                 case UHF_C_PORT_RESET:
3379                 default:
3380                         err = USBD_IOERROR;
3381                         goto ret;
3382                 }
3383                 break;
3384         default:
3385                 err = USBD_IOERROR;
3386                 goto ret;
3387         }
3388         xfer->actlen = totlen;
3389         err = USBD_NORMAL_COMPLETION;
3390  ret:
3391         xfer->status = err;
3392         crit_enter();
3393         usb_transfer_complete(xfer);
3394         crit_exit();
3395         return (USBD_IN_PROGRESS);
3396 }
3397
3398 /* Abort a root control request. */
3399 void
3400 uhci_root_ctrl_abort(usbd_xfer_handle xfer)
3401 {
3402         /* Nothing to do, all transfers are synchronous. */
3403 }
3404
3405 /* Close the root pipe. */
3406 void
3407 uhci_root_ctrl_close(usbd_pipe_handle pipe)
3408 {
3409         DPRINTF(("uhci_root_ctrl_close\n"));
3410 }
3411
3412 /* Abort a root interrupt request. */
3413 void
3414 uhci_root_intr_abort(usbd_xfer_handle xfer)
3415 {
3416         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3417
3418         callout_stop(&sc->sc_poll_handle);
3419         sc->sc_intr_xfer = NULL;
3420
3421         if (xfer->pipe->intrxfer == xfer) {
3422                 DPRINTF(("uhci_root_intr_abort: remove\n"));
3423                 xfer->pipe->intrxfer = 0;
3424         }
3425         xfer->status = USBD_CANCELLED;
3426 #ifdef DIAGNOSTIC
3427         UXFER(xfer)->iinfo.isdone = 1;
3428 #endif
3429         usb_transfer_complete(xfer);
3430 }
3431
3432 usbd_status
3433 uhci_root_intr_transfer(usbd_xfer_handle xfer)
3434 {
3435         usbd_status err;
3436
3437         /* Insert last in queue. */
3438         err = usb_insert_transfer(xfer);
3439         if (err)
3440                 return (err);
3441
3442         /*
3443          * Pipe isn't running (otherwise err would be USBD_INPROG),
3444          * so start it first.
3445          */
3446         return (uhci_root_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
3447 }
3448
3449 /* Start a transfer on the root interrupt pipe */
3450 usbd_status
3451 uhci_root_intr_start(usbd_xfer_handle xfer)
3452 {
3453         usbd_pipe_handle pipe = xfer->pipe;
3454         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3455
3456         DPRINTFN(3, ("uhci_root_intr_start: xfer=%p len=%d flags=%d\n",
3457                      xfer, xfer->length, xfer->flags));
3458
3459         if (sc->sc_dying)
3460                 return (USBD_IOERROR);
3461
3462         sc->sc_ival = MS_TO_TICKS(xfer->pipe->endpoint->edesc->bInterval);
3463         callout_reset(&sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
3464         sc->sc_intr_xfer = xfer;
3465         return (USBD_IN_PROGRESS);
3466 }
3467
3468 /* Close the root interrupt pipe. */
3469 void
3470 uhci_root_intr_close(usbd_pipe_handle pipe)
3471 {
3472         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3473
3474         callout_stop(&sc->sc_poll_handle);
3475         sc->sc_intr_xfer = NULL;
3476         DPRINTF(("uhci_root_intr_close\n"));
3477 }