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 1.29 2008/08/13 00:55:55 dillon 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 = chsqh;
 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         UHCICMD(sc, UHCI_CMD_MAXP); /* Assume 64 byte packets at frame end */
 507
 508         DPRINTFN(1,("uhci_init: enabling\n"));
 509         UWRITE2(sc, UHCI_INTR, UHCI_INTR_TOCRCIE | UHCI_INTR_RIE |
 510                 UHCI_INTR_IOCE | UHCI_INTR_SPIE);       /* enable interrupts */
 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                 device_printf(sc->sc_bus.bdev,
1137                     "interrupt while not operating ignored\n");
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                 device_printf(sc->sc_bus.bdev, "resume detect\n");
1151 #endif
1152         }
1153         if (status & UHCI_STS_HSE) {
1154                 ack |= UHCI_STS_HSE;
1155                 device_printf(sc->sc_bus.bdev, "host system error\n");
1156         }
1157         if (status & UHCI_STS_HCPE) {
1158                 ack |= UHCI_STS_HCPE;
1159                 device_printf(sc->sc_bus.bdev,
1160                     "host controller process error\n");
1161         }
1162         if (status & UHCI_STS_HCH) {
1163                 /* no acknowledge needed */
1164                 if (!sc->sc_dying) {
1165                         device_printf(sc->sc_bus.bdev,
1166                             "host controller halted\n");
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         /*
1196          * this is a software interrupt, not a real interrupt,
1197          * do not bump intr_context
1198          */
1199         /* sc->sc_bus.intr_context++; */
1200
1201         /*
1202          * Interrupts on UHCI really suck.  When the host controller
1203          * interrupts because a transfer is completed there is no
1204          * way of knowing which transfer it was.  You can scan down
1205          * the TDs and QHs of the previous frame to limit the search,
1206          * but that assumes that the interrupt was not delayed by more
1207          * than 1 ms, which may not always be true (e.g. after debug
1208          * output on a slow console).
1209          * We scan all interrupt descriptors to see if any have
1210          * completed.
1211          */
1212         LIST_FOREACH_MUTABLE(ii, &sc->sc_intrhead, list, nextii)
1213                 uhci_check_intr(sc, ii);
1214
1215 #ifdef USB_USE_SOFTINTR
1216         if (sc->sc_softwake) {
1217                 sc->sc_softwake = 0;
1218                 wakeup(&sc->sc_softwake);
1219         }
1220 #endif /* USB_USE_SOFTINTR */
1221
1222         /* sc->sc_bus.intr_context--; */
1223 }
1224
1225 /* Check for an interrupt. */
1226 void
1227 uhci_check_intr(uhci_softc_t *sc, uhci_intr_info_t *ii)
1228 {
1229         uhci_soft_td_t *std, *lstd;
1230         u_int32_t status;
1231
1232         DPRINTFN(15, ("uhci_check_intr: ii=%p\n", ii));
1233 #ifdef DIAGNOSTIC
1234         if (ii == NULL) {
1235                 kprintf("uhci_check_intr: no ii? %p\n", ii);
1236                 return;
1237         }
1238 #endif
1239         if (ii->xfer->status == USBD_CANCELLED ||
1240             ii->xfer->status == USBD_TIMEOUT) {
1241                 DPRINTF(("uhci_check_intr: aborted xfer=%p\n", ii->xfer));
1242                 return;
1243         }
1244
1245         if (ii->stdstart == NULL)
1246                 return;
1247         lstd = ii->stdend;
1248 #ifdef DIAGNOSTIC
1249         if (lstd == NULL) {
1250                 kprintf("uhci_check_intr: std==0\n");
1251                 return;
1252         }
1253 #endif
1254         /*
1255          * If the last TD is still active we need to check whether there
1256          * is an error somewhere in the middle, or whether there was a
1257          * short packet (SPD and not ACTIVE).
1258          */
1259         if (le32toh(lstd->td.td_status) & UHCI_TD_ACTIVE) {
1260                 DPRINTFN(12, ("uhci_check_intr: active ii=%p\n", ii));
1261                 for (std = ii->stdstart; std != lstd; std = std->link.std) {
1262                         status = le32toh(std->td.td_status);
1263                         /* If there's an active TD the xfer isn't done. */
1264                         if (status & UHCI_TD_ACTIVE)
1265                                 break;
1266                         /* Any kind of error makes the xfer done. */
1267                         if (status & UHCI_TD_STALLED)
1268                                 goto done;
1269                         /* We want short packets, and it is short: it's done */
1270                         if ((status & UHCI_TD_SPD) &&
1271                             UHCI_TD_GET_ACTLEN(status) <
1272                             UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token))) {
1273                                 goto done;
1274                         }
1275                 }
1276                 DPRINTFN(12, ("uhci_check_intr: ii=%p std=%p still active\n",
1277                               ii, ii->stdstart));
1278                 return;
1279         }
1280 done:
1281         DPRINTFN(12, ("uhci_check_intr: ii=%p done\n", ii));
1282         callout_stop(&ii->xfer->timeout_handle);
1283         usb_rem_task(ii->xfer->pipe->device, &UXFER(ii->xfer)->abort_task);
1284         uhci_idone(ii);
1285 }
1286
1287 /* Called from a critical section. */
1288 void
1289 uhci_idone(uhci_intr_info_t *ii)
1290 {
1291         usbd_xfer_handle xfer = ii->xfer;
1292         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1293         uhci_soft_td_t *std;
1294         u_int32_t status = 0, nstatus;
1295         int actlen;
1296
1297         DPRINTFN(12, ("uhci_idone: ii=%p\n", ii));
1298 #ifdef DIAGNOSTIC
1299         {
1300                 crit_enter();
1301                 if (ii->isdone) {
1302                         crit_exit();
1303 #ifdef USB_DEBUG
1304                         kprintf("uhci_idone: ii is done!\n   ");
1305                         uhci_dump_ii(ii);
1306 #else
1307                         kprintf("uhci_idone: ii=%p is done!\n", ii);
1308 #endif
1309                         return;
1310                 }
1311                 ii->isdone = 1;
1312                 crit_exit();
1313         }
1314 #endif
1315
1316         if (xfer->nframes != 0) {
1317                 /* Isoc transfer, do things differently. */
1318                 uhci_soft_td_t **stds = upipe->u.iso.stds;
1319                 int i, n, nframes, len;
1320
1321                 DPRINTFN(5,("uhci_idone: ii=%p isoc ready\n", ii));
1322
1323                 nframes = xfer->nframes;
1324                 actlen = 0;
1325                 n = UXFER(xfer)->curframe;
1326                 for (i = 0; i < nframes; i++) {
1327                         std = stds[n];
1328 #ifdef USB_DEBUG
1329                         if (uhcidebug > 5) {
1330                                 DPRINTFN(-1,("uhci_idone: isoc TD %d\n", i));
1331                                 uhci_dump_td(std);
1332                         }
1333 #endif
1334                         if (++n >= UHCI_VFRAMELIST_COUNT)
1335                                 n = 0;
1336                         status = le32toh(std->td.td_status);
1337                         len = UHCI_TD_GET_ACTLEN(status);
1338                         xfer->frlengths[i] = len;
1339                         actlen += len;
1340                 }
1341                 upipe->u.iso.inuse -= nframes;
1342                 xfer->actlen = actlen;
1343                 xfer->status = USBD_NORMAL_COMPLETION;
1344                 goto end;
1345         }
1346
1347 #ifdef USB_DEBUG
1348         DPRINTFN(10, ("uhci_idone: ii=%p, xfer=%p, pipe=%p ready\n",
1349                       ii, xfer, upipe));
1350         if (uhcidebug > 10)
1351                 uhci_dump_tds(ii->stdstart);
1352 #endif
1353
1354         /* The transfer is done, compute actual length and status. */
1355         actlen = 0;
1356         for (std = ii->stdstart; std != NULL; std = std->link.std) {
1357                 nstatus = le32toh(std->td.td_status);
1358                 if (nstatus & UHCI_TD_ACTIVE)
1359                         break;
1360
1361                 status = nstatus;
1362                 if (UHCI_TD_GET_PID(le32toh(std->td.td_token)) !=
1363                     UHCI_TD_PID_SETUP) {
1364                         actlen += UHCI_TD_GET_ACTLEN(status);
1365                 } else {
1366                         /*
1367                          * UHCI will report CRCTO in addition to a STALL or NAK
1368                          * for a SETUP transaction.  See section 3.2.2, "TD
1369                          * CONTROL AND STATUS".
1370                          */
1371                         if (status & (UHCI_TD_STALLED | UHCI_TD_NAK))
1372                                 status &= ~UHCI_TD_CRCTO;
1373                 }
1374
1375         }
1376         /* If there are left over TDs we need to update the toggle. */
1377         if (std != NULL)
1378                 upipe->nexttoggle = UHCI_TD_GET_DT(le32toh(std->td.td_token));
1379
1380         status &= UHCI_TD_ERROR;
1381         DPRINTFN(10, ("uhci_idone: actlen=%d, status=0x%x\n",
1382                       actlen, status));
1383         xfer->actlen = actlen;
1384         if (status != 0) {
1385 #ifdef USB_DEBUG
1386                 char sbuf[128];
1387
1388                 bitmask_snprintf((u_int32_t)status,
1389                                  "\20\22BITSTUFF\23CRCTO\24NAK\25"
1390                                  "BABBLE\26DBUFFER\27STALLED\30ACTIVE",
1391                                  sbuf, sizeof(sbuf));
1392
1393                 DPRINTFN((status == UHCI_TD_STALLED)*10,
1394                          ("uhci_idone: error, addr=%d, endpt=0x%02x, "
1395                           "status 0x%s\n",
1396                           xfer->pipe->device->address,
1397                           xfer->pipe->endpoint->edesc->bEndpointAddress,
1398                           sbuf));
1399 #endif
1400                 if (status == UHCI_TD_STALLED)
1401                         xfer->status = USBD_STALLED;
1402                 else
1403                         xfer->status = USBD_IOERROR; /* more info XXX */
1404         } else {
1405                 xfer->status = USBD_NORMAL_COMPLETION;
1406         }
1407
1408  end:
1409         usb_transfer_complete(xfer);
1410         DPRINTFN(12, ("uhci_idone: ii=%p done\n", ii));
1411 }
1412
1413 /*
1414  * Called when a request does not complete.
1415  */
1416 void
1417 uhci_timeout(void *addr)
1418 {
1419         uhci_intr_info_t *ii = addr;
1420         struct uhci_xfer *uxfer = UXFER(ii->xfer);
1421         struct uhci_pipe *upipe = (struct uhci_pipe *)uxfer->xfer.pipe;
1422         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1423
1424         DPRINTF(("uhci_timeout: uxfer=%p\n", uxfer));
1425
1426         if (sc->sc_dying) {
1427                 uhci_abort_xfer(&uxfer->xfer, USBD_TIMEOUT);
1428                 return;
1429         }
1430
1431         /* Execute the abort in a process context. */
1432         usb_add_task(uxfer->xfer.pipe->device, &uxfer->abort_task,
1433                      USB_TASKQ_HC);
1434 }
1435
1436 void
1437 uhci_timeout_task(void *addr)
1438 {
1439         usbd_xfer_handle xfer = addr;
1440
1441         DPRINTF(("uhci_timeout_task: xfer=%p\n", xfer));
1442
1443         crit_enter();
1444         uhci_abort_xfer(xfer, USBD_TIMEOUT);
1445         crit_exit();
1446 }
1447
1448 /*
1449  * Wait here until controller claims to have an interrupt.
1450  * Then call uhci_intr and return.  Use timeout to avoid waiting
1451  * too long.
1452  * Only used during boot when interrupts are not enabled yet.
1453  */
1454 void
1455 uhci_waitintr(uhci_softc_t *sc, usbd_xfer_handle xfer)
1456 {
1457         int timo = xfer->timeout;
1458         uhci_intr_info_t *ii;
1459
1460         DPRINTFN(10,("uhci_waitintr: timeout = %dms\n", timo));
1461
1462         xfer->status = USBD_IN_PROGRESS;
1463         for (; timo >= 0; timo--) {
1464                 usb_delay_ms(&sc->sc_bus, 1);
1465                 DPRINTFN(20,("uhci_waitintr: 0x%04x\n", UREAD2(sc, UHCI_STS)));
1466                 if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1467                         uhci_intr1(sc);
1468                 if (xfer->status != USBD_IN_PROGRESS)
1469                         return;
1470         }
1471
1472         /* Timeout */
1473         DPRINTF(("uhci_waitintr: timeout\n"));
1474         for (ii = LIST_FIRST(&sc->sc_intrhead);
1475              ii != NULL && ii->xfer != xfer;
1476              ii = LIST_NEXT(ii, list))
1477                 ;
1478 #ifdef DIAGNOSTIC
1479         if (ii == NULL)
1480                 panic("uhci_waitintr: lost intr_info");
1481 #endif
1482         uhci_idone(ii);
1483 }
1484
1485 void
1486 uhci_poll(struct usbd_bus *bus)
1487 {
1488         uhci_softc_t *sc = (uhci_softc_t *)bus;
1489
1490         if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1491                 uhci_intr1(sc);
1492 }
1493
1494 void
1495 uhci_reset(uhci_softc_t *sc)
1496 {
1497         int n;
1498
1499         UHCICMD(sc, UHCI_CMD_HCRESET);
1500         /* The reset bit goes low when the controller is done. */
1501         for (n = 0; n < UHCI_RESET_TIMEOUT &&
1502                     (UREAD2(sc, UHCI_CMD) & UHCI_CMD_HCRESET); n++)
1503                 usb_delay_ms(&sc->sc_bus, 1);
1504         if (n >= UHCI_RESET_TIMEOUT)
1505                 device_printf(sc->sc_bus.bdev, "controller did not reset\n");
1506 }
1507
1508 usbd_status
1509 uhci_run(uhci_softc_t *sc, int run)
1510 {
1511         int n, running;
1512         u_int16_t cmd;
1513
1514         run = run != 0;
1515         crit_enter();
1516         DPRINTF(("uhci_run: setting run=%d\n", run));
1517         cmd = UREAD2(sc, UHCI_CMD);
1518         if (run)
1519                 cmd |= UHCI_CMD_RS;
1520         else
1521                 cmd &= ~UHCI_CMD_RS;
1522         UHCICMD(sc, cmd);
1523         for(n = 0; n < 10; n++) {
1524                 running = !(UREAD2(sc, UHCI_STS) & UHCI_STS_HCH);
1525                 /* return when we've entered the state we want */
1526                 if (run == running) {
1527                         crit_exit();
1528                         DPRINTF(("uhci_run: done cmd=0x%x sts=0x%x\n",
1529                                  UREAD2(sc, UHCI_CMD), UREAD2(sc, UHCI_STS)));
1530                         return (USBD_NORMAL_COMPLETION);
1531                 }
1532                 usb_delay_ms(&sc->sc_bus, 1);
1533         }
1534         crit_exit();
1535         device_printf(sc->sc_bus.bdev, "cannot %s\n", run ? "start" : "stop");
1536         return (USBD_IOERROR);
1537 }
1538
1539 /*
1540  * Memory management routines.
1541  *  uhci_alloc_std allocates TDs
1542  *  uhci_alloc_sqh allocates QHs
1543  * These two routines do their own free list management,
1544  * partly for speed, partly because allocating DMAable memory
1545  * has page size granularaity so much memory would be wasted if
1546  * only one TD/QH (32 bytes) was placed in each allocated chunk.
1547  */
1548
1549 uhci_soft_td_t *
1550 uhci_alloc_std(uhci_softc_t *sc)
1551 {
1552         uhci_soft_td_t *std;
1553         usbd_status err;
1554         int i, offs;
1555         usb_dma_t dma;
1556
1557         if (sc->sc_freetds == NULL) {
1558                 DPRINTFN(2,("uhci_alloc_std: allocating chunk\n"));
1559                 err = usb_allocmem(&sc->sc_bus, UHCI_STD_SIZE * UHCI_STD_CHUNK,
1560                           UHCI_TD_ALIGN, &dma);
1561                 if (err)
1562                         return (0);
1563                 for(i = 0; i < UHCI_STD_CHUNK; i++) {
1564                         offs = i * UHCI_STD_SIZE;
1565                         std = KERNADDR(&dma, offs);
1566                         std->physaddr = DMAADDR(&dma, offs);
1567                         std->link.std = sc->sc_freetds;
1568                         sc->sc_freetds = std;
1569                 }
1570         }
1571         std = sc->sc_freetds;
1572         sc->sc_freetds = std->link.std;
1573         memset(&std->td, 0, sizeof(uhci_td_t));
1574         return std;
1575 }
1576
1577 void
1578 uhci_free_std(uhci_softc_t *sc, uhci_soft_td_t *std)
1579 {
1580 #ifdef DIAGNOSTIC
1581 #define TD_IS_FREE 0x12345678
1582         if (le32toh(std->td.td_token) == TD_IS_FREE) {
1583                 kprintf("uhci_free_std: freeing free TD %p\n", std);
1584                 return;
1585         }
1586         std->td.td_token = htole32(TD_IS_FREE);
1587 #endif
1588         std->link.std = sc->sc_freetds;
1589         sc->sc_freetds = std;
1590 }
1591
1592 uhci_soft_qh_t *
1593 uhci_alloc_sqh(uhci_softc_t *sc)
1594 {
1595         uhci_soft_qh_t *sqh;
1596         usbd_status err;
1597         int i, offs;
1598         usb_dma_t dma;
1599
1600         if (sc->sc_freeqhs == NULL) {
1601                 DPRINTFN(2, ("uhci_alloc_sqh: allocating chunk\n"));
1602                 err = usb_allocmem(&sc->sc_bus, UHCI_SQH_SIZE * UHCI_SQH_CHUNK,
1603                           UHCI_QH_ALIGN, &dma);
1604                 if (err)
1605                         return (0);
1606                 for(i = 0; i < UHCI_SQH_CHUNK; i++) {
1607                         offs = i * UHCI_SQH_SIZE;
1608                         sqh = KERNADDR(&dma, offs);
1609                         sqh->physaddr = DMAADDR(&dma, offs);
1610                         sqh->hlink = sc->sc_freeqhs;
1611                         sc->sc_freeqhs = sqh;
1612                 }
1613         }
1614         sqh = sc->sc_freeqhs;
1615         sc->sc_freeqhs = sqh->hlink;
1616         memset(&sqh->qh, 0, sizeof(uhci_qh_t));
1617         return (sqh);
1618 }
1619
1620 void
1621 uhci_free_sqh(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1622 {
1623         sqh->hlink = sc->sc_freeqhs;
1624         sc->sc_freeqhs = sqh;
1625 }
1626
1627 void
1628 uhci_free_std_chain(uhci_softc_t *sc, uhci_soft_td_t *std,
1629                     uhci_soft_td_t *stdend)
1630 {
1631         uhci_soft_td_t *p;
1632
1633         for (; std != stdend; std = p) {
1634                 p = std->link.std;
1635                 uhci_free_std(sc, std);
1636         }
1637 }
1638
1639 usbd_status
1640 uhci_alloc_std_chain(struct uhci_pipe *upipe, uhci_softc_t *sc, int len,
1641                      int rd, u_int16_t flags, usb_dma_t *dma,
1642                      uhci_soft_td_t **sp, uhci_soft_td_t **ep)
1643 {
1644         uhci_soft_td_t *p, *lastp;
1645         uhci_physaddr_t lastlink;
1646         int i, ntd, l, tog, maxp;
1647         u_int32_t status;
1648         int addr = upipe->pipe.device->address;
1649         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1650
1651         DPRINTFN(8, ("uhci_alloc_std_chain: addr=%d endpt=%d len=%d speed=%d "
1652                      "flags=0x%x\n", addr, UE_GET_ADDR(endpt), len,
1653                      upipe->pipe.device->speed, flags));
1654         maxp = UGETW(upipe->pipe.endpoint->edesc->wMaxPacketSize);
1655         if (maxp == 0) {
1656                 kprintf("uhci_alloc_std_chain: maxp=0\n");
1657                 return (USBD_INVAL);
1658         }
1659         ntd = (len + maxp - 1) / maxp;
1660         if ((flags & USBD_FORCE_SHORT_XFER) && len % maxp == 0)
1661                 ntd++;
1662         DPRINTFN(10, ("uhci_alloc_std_chain: maxp=%d ntd=%d\n", maxp, ntd));
1663         if (ntd == 0) {
1664                 *sp = *ep = 0;
1665                 DPRINTFN(-1,("uhci_alloc_std_chain: ntd=0\n"));
1666                 return (USBD_NORMAL_COMPLETION);
1667         }
1668         tog = upipe->nexttoggle;
1669         if (ntd % 2 == 0)
1670                 tog ^= 1;
1671         upipe->nexttoggle = tog ^ 1;
1672         lastp = NULL;
1673         lastlink = UHCI_PTR_T;
1674         ntd--;
1675         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(3) | UHCI_TD_ACTIVE);
1676         if (upipe->pipe.device->speed == USB_SPEED_LOW)
1677                 status |= UHCI_TD_LS;
1678         if (flags & USBD_SHORT_XFER_OK)
1679                 status |= UHCI_TD_SPD;
1680         for (i = ntd; i >= 0; i--) {
1681                 p = uhci_alloc_std(sc);
1682                 if (p == NULL) {
1683                         uhci_free_std_chain(sc, lastp, NULL);
1684                         return (USBD_NOMEM);
1685                 }
1686                 p->link.std = lastp;
1687                 p->td.td_link = htole32(lastlink | UHCI_PTR_VF | UHCI_PTR_TD);
1688                 lastp = p;
1689                 lastlink = p->physaddr;
1690                 p->td.td_status = htole32(status);
1691                 if (i == ntd) {
1692                         /* last TD */
1693                         l = len % maxp;
1694                         if (l == 0 && !(flags & USBD_FORCE_SHORT_XFER))
1695                                 l = maxp;
1696                         *ep = p;
1697                 } else
1698                         l = maxp;
1699                 p->td.td_token =
1700                         htole32(rd ? UHCI_TD_IN (l, endpt, addr, tog) :
1701                                      UHCI_TD_OUT(l, endpt, addr, tog));
1702                 p->td.td_buffer = htole32(DMAADDR(dma, i * maxp));
1703                 tog ^= 1;
1704         }
1705         *sp = lastp;
1706         DPRINTFN(10, ("uhci_alloc_std_chain: nexttog=%d\n",
1707                       upipe->nexttoggle));
1708         return (USBD_NORMAL_COMPLETION);
1709 }
1710
1711 void
1712 uhci_device_clear_toggle(usbd_pipe_handle pipe)
1713 {
1714         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
1715         upipe->nexttoggle = 0;
1716 }
1717
1718 void
1719 uhci_noop(usbd_pipe_handle pipe)
1720 {
1721 }
1722
1723 usbd_status
1724 uhci_device_bulk_transfer(usbd_xfer_handle xfer)
1725 {
1726         usbd_status err;
1727
1728         /* Insert last in queue. */
1729         err = usb_insert_transfer(xfer);
1730         if (err)
1731                 return (err);
1732
1733         /*
1734          * Pipe isn't running (otherwise err would be USBD_INPROG),
1735          * so start it first.
1736          */
1737         return (uhci_device_bulk_start(STAILQ_FIRST(&xfer->pipe->queue)));
1738 }
1739
1740 usbd_status
1741 uhci_device_bulk_start(usbd_xfer_handle xfer)
1742 {
1743         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1744         usbd_device_handle dev = upipe->pipe.device;
1745         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
1746         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
1747         uhci_soft_td_t *data, *dataend;
1748         uhci_soft_qh_t *sqh;
1749         usbd_status err;
1750         int len, isread, endpt;
1751
1752         DPRINTFN(3, ("uhci_device_bulk_start: xfer=%p len=%d flags=%d ii=%p\n",
1753                      xfer, xfer->length, xfer->flags, ii));
1754
1755         if (sc->sc_dying)
1756                 return (USBD_IOERROR);
1757
1758 #ifdef DIAGNOSTIC
1759         if (xfer->rqflags & URQ_REQUEST)
1760                 panic("uhci_device_bulk_transfer: a request");
1761 #endif
1762
1763         len = xfer->length;
1764         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1765         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
1766         sqh = upipe->u.bulk.sqh;
1767
1768         upipe->u.bulk.isread = isread;
1769         upipe->u.bulk.length = len;
1770
1771         err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
1772                                    &xfer->dmabuf, &data, &dataend);
1773         if (err)
1774                 return (err);
1775         dataend->td.td_status |= htole32(UHCI_TD_IOC);
1776
1777 #ifdef USB_DEBUG
1778         if (uhcidebug > 8) {
1779                 DPRINTF(("uhci_device_bulk_transfer: data(1)\n"));
1780                 uhci_dump_tds(data);
1781         }
1782 #endif
1783
1784         /* Set up interrupt info. */
1785         ii->xfer = xfer;
1786         ii->stdstart = data;
1787         ii->stdend = dataend;
1788 #ifdef DIAGNOSTIC
1789         if (!ii->isdone) {
1790                 kprintf("uhci_device_bulk_transfer: not done, ii=%p\n", ii);
1791         }
1792         ii->isdone = 0;
1793 #endif
1794
1795         sqh->elink = data;
1796         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
1797
1798         crit_enter();
1799         uhci_add_bulk(sc, sqh);
1800         uhci_add_intr_info(sc, ii);
1801
1802         if (xfer->timeout && !sc->sc_bus.use_polling) {
1803                 callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
1804                             uhci_timeout, ii);
1805         }
1806         xfer->status = USBD_IN_PROGRESS;
1807         crit_exit();
1808
1809 #ifdef USB_DEBUG
1810         if (uhcidebug > 10) {
1811                 DPRINTF(("uhci_device_bulk_transfer: data(2)\n"));
1812                 uhci_dump_tds(data);
1813         }
1814 #endif
1815
1816         if (sc->sc_bus.use_polling)
1817                 uhci_waitintr(sc, xfer);
1818
1819         return (USBD_IN_PROGRESS);
1820 }
1821
1822 /* Abort a device bulk request. */
1823 void
1824 uhci_device_bulk_abort(usbd_xfer_handle xfer)
1825 {
1826         DPRINTF(("uhci_device_bulk_abort:\n"));
1827         uhci_abort_xfer(xfer, USBD_CANCELLED);
1828 }
1829
1830 /*
1831  * Abort a device request.
1832  * If this routine is called from a critical section.  It guarantees that
1833  * the request will be removed from the hardware scheduling and that
1834  * the callback for it will be called with USBD_CANCELLED status.
1835  * It's impossible to guarantee that the requested transfer will not
1836  * have happened since the hardware runs concurrently.
1837  * If the transaction has already happened we rely on the ordinary
1838  * interrupt processing to process it.
1839  */
1840 void
1841 uhci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
1842 {
1843         struct uhci_xfer *uxfer = UXFER(xfer);
1844         uhci_intr_info_t *ii = &uxfer->iinfo;
1845         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1846         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1847         uhci_soft_td_t *std;
1848
1849         DPRINTFN(1,("uhci_abort_xfer: xfer=%p, status=%d\n", xfer, status));
1850
1851         if (sc->sc_dying) {
1852                 /* If we're dying, just do the software part. */
1853                 crit_enter();
1854                 xfer->status = status;  /* make software ignore it */
1855                 callout_stop(&xfer->timeout_handle);
1856                 usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1857                 usb_transfer_complete(xfer);
1858                 crit_exit();
1859                 return;
1860         }
1861
1862         if (xfer->device->bus->intr_context /* || !curproc REMOVED DFly */)
1863                 panic("uhci_abort_xfer: not in process context");
1864
1865         /*
1866          * If an abort is already in progress then just wait for it to
1867          * complete and return.
1868          */
1869         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING) {
1870                 DPRINTFN(2, ("uhci_abort_xfer: already aborting\n"));
1871                 /* No need to wait if we're aborting from a timeout. */
1872                 if (status == USBD_TIMEOUT)
1873                         return;
1874                 /* Override the status which might be USBD_TIMEOUT. */
1875                 xfer->status = status;
1876                 DPRINTFN(2, ("uhci_abort_xfer: waiting for abort to finish\n"));
1877                 uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTWAIT;
1878                 while (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING)
1879                         tsleep(&uxfer->uhci_xfer_flags, 0, "uhciaw", 0);
1880                 return;
1881         }
1882
1883         /*
1884          * Step 1: Make interrupt routine and hardware ignore xfer.
1885          */
1886         crit_enter();
1887         uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTING;
1888         xfer->status = status;  /* make software ignore it */
1889         callout_stop(&xfer->timeout_handle);
1890         usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1891         DPRINTFN(1,("uhci_abort_xfer: stop ii=%p\n", ii));
1892         for (std = ii->stdstart; std != NULL; std = std->link.std)
1893                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
1894         crit_exit();
1895
1896         /*
1897          * Step 2: Wait until we know hardware has finished any possible
1898          * use of the xfer.  Also make sure the soft interrupt routine
1899          * has run.
1900          */
1901         usb_delay_ms(upipe->pipe.device->bus, 2); /* Hardware finishes in 1ms */
1902         crit_enter();
1903 #ifdef USB_USE_SOFTINTR
1904         sc->sc_softwake = 1;
1905 #endif /* USB_USE_SOFTINTR */
1906         usb_schedsoftintr(&sc->sc_bus);
1907 #ifdef USB_USE_SOFTINTR
1908         DPRINTFN(1,("uhci_abort_xfer: tsleep\n"));
1909         tsleep(&sc->sc_softwake, 0, "uhciab", 0);
1910 #endif /* USB_USE_SOFTINTR */
1911
1912         /*
1913          * Step 3: Execute callback.
1914          */
1915         DPRINTFN(1,("uhci_abort_xfer: callback\n"));
1916 #ifdef DIAGNOSTIC
1917         ii->isdone = 1;
1918 #endif
1919         /* Do the wakeup first to avoid touching the xfer after the callback. */
1920         uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTING;
1921         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTWAIT) {
1922                 uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTWAIT;
1923                 wakeup(&uxfer->uhci_xfer_flags);
1924         }
1925         usb_transfer_complete(xfer);
1926         crit_exit();
1927 }
1928
1929 /* Close a device bulk pipe. */
1930 void
1931 uhci_device_bulk_close(usbd_pipe_handle pipe)
1932 {
1933         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
1934         usbd_device_handle dev = upipe->pipe.device;
1935         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
1936
1937         uhci_free_sqh(sc, upipe->u.bulk.sqh);
1938         pipe->endpoint->savedtoggle = upipe->nexttoggle;
1939 }
1940
1941 usbd_status
1942 uhci_device_ctrl_transfer(usbd_xfer_handle xfer)
1943 {
1944         usbd_status err;
1945
1946         /* Insert last in queue. */
1947         err = usb_insert_transfer(xfer);
1948         if (err)
1949                 return (err);
1950
1951         /*
1952          * Pipe isn't running (otherwise err would be USBD_INPROG),
1953          * so start it first.
1954          */
1955         return (uhci_device_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
1956 }
1957
1958 usbd_status
1959 uhci_device_ctrl_start(usbd_xfer_handle xfer)
1960 {
1961         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
1962         usbd_status err;
1963
1964         if (sc->sc_dying)
1965                 return (USBD_IOERROR);
1966
1967 #ifdef DIAGNOSTIC
1968         if (!(xfer->rqflags & URQ_REQUEST))
1969                 panic("uhci_device_ctrl_transfer: not a request");
1970 #endif
1971
1972         err = uhci_device_request(xfer);
1973         if (err)
1974                 return (err);
1975
1976         if (sc->sc_bus.use_polling)
1977                 uhci_waitintr(sc, xfer);
1978         return (USBD_IN_PROGRESS);
1979 }
1980
1981 usbd_status
1982 uhci_device_intr_transfer(usbd_xfer_handle xfer)
1983 {
1984         usbd_status err;
1985
1986         /* Insert last in queue. */
1987         err = usb_insert_transfer(xfer);
1988         if (err)
1989                 return (err);
1990
1991         /*
1992          * Pipe isn't running (otherwise err would be USBD_INPROG),
1993          * so start it first.
1994          */
1995         return (uhci_device_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
1996 }
1997
1998 usbd_status
1999 uhci_device_intr_start(usbd_xfer_handle xfer)
2000 {
2001         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2002         usbd_device_handle dev = upipe->pipe.device;
2003         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2004         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2005         uhci_soft_td_t *data, *dataend;
2006         uhci_soft_qh_t *sqh;
2007         usbd_status err;
2008         int isread, endpt;
2009         int i;
2010
2011         if (sc->sc_dying)
2012                 return (USBD_IOERROR);
2013
2014         DPRINTFN(3,("uhci_device_intr_transfer: xfer=%p len=%d flags=%d\n",
2015                     xfer, xfer->length, xfer->flags));
2016
2017 #ifdef DIAGNOSTIC
2018         if (xfer->rqflags & URQ_REQUEST)
2019                 panic("uhci_device_intr_transfer: a request");
2020 #endif
2021
2022         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2023         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
2024         sqh = upipe->u.bulk.sqh;
2025
2026         upipe->u.intr.isread = isread;
2027
2028         err = uhci_alloc_std_chain(upipe, sc, xfer->length, isread,
2029                                    xfer->flags, &xfer->dmabuf, &data,
2030                                    &dataend);
2031         if (err)
2032                 return (err);
2033         dataend->td.td_status |= htole32(UHCI_TD_IOC);
2034
2035 #ifdef USB_DEBUG
2036         if (uhcidebug > 10) {
2037                 DPRINTF(("uhci_device_intr_transfer: data(1)\n"));
2038                 uhci_dump_tds(data);
2039                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2040         }
2041 #endif
2042
2043         crit_enter();
2044         /* Set up interrupt info. */
2045         ii->xfer = xfer;
2046         ii->stdstart = data;
2047         ii->stdend = dataend;
2048 #ifdef DIAGNOSTIC
2049         if (!ii->isdone) {
2050                 kprintf("uhci_device_intr_transfer: not done, ii=%p\n", ii);
2051         }
2052         ii->isdone = 0;
2053 #endif
2054
2055         DPRINTFN(10,("uhci_device_intr_transfer: qhs[0]=%p\n",
2056                      upipe->u.intr.qhs[0]));
2057         for (i = 0; i < upipe->u.intr.npoll; i++) {
2058                 sqh = upipe->u.intr.qhs[i];
2059                 sqh->elink = data;
2060                 sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2061         }
2062         uhci_add_intr_info(sc, ii);
2063         xfer->status = USBD_IN_PROGRESS;
2064         crit_exit();
2065
2066 #ifdef USB_DEBUG
2067         if (uhcidebug > 10) {
2068                 DPRINTF(("uhci_device_intr_transfer: data(2)\n"));
2069                 uhci_dump_tds(data);
2070                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2071         }
2072 #endif
2073
2074         return (USBD_IN_PROGRESS);
2075 }
2076
2077 /* Abort a device control request. */
2078 void
2079 uhci_device_ctrl_abort(usbd_xfer_handle xfer)
2080 {
2081         DPRINTF(("uhci_device_ctrl_abort:\n"));
2082         uhci_abort_xfer(xfer, USBD_CANCELLED);
2083 }
2084
2085 /* Close a device control pipe. */
2086 void
2087 uhci_device_ctrl_close(usbd_pipe_handle pipe)
2088 {
2089 }
2090
2091 /* Abort a device interrupt request. */
2092 void
2093 uhci_device_intr_abort(usbd_xfer_handle xfer)
2094 {
2095         DPRINTFN(1,("uhci_device_intr_abort: xfer=%p\n", xfer));
2096         if (xfer->pipe->intrxfer == xfer) {
2097                 DPRINTFN(1,("uhci_device_intr_abort: remove\n"));
2098                 xfer->pipe->intrxfer = NULL;
2099         }
2100         uhci_abort_xfer(xfer, USBD_CANCELLED);
2101 }
2102
2103 /* Close a device interrupt pipe. */
2104 void
2105 uhci_device_intr_close(usbd_pipe_handle pipe)
2106 {
2107         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2108         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2109         int i, npoll;
2110
2111         /* Unlink descriptors from controller data structures. */
2112         npoll = upipe->u.intr.npoll;
2113         crit_enter();
2114         for (i = 0; i < npoll; i++)
2115                 uhci_remove_intr(sc, upipe->u.intr.qhs[i]);
2116         crit_exit();
2117
2118         /*
2119          * We now have to wait for any activity on the physical
2120          * descriptors to stop.
2121          */
2122         usb_delay_ms(&sc->sc_bus, 2);
2123
2124         for(i = 0; i < npoll; i++)
2125                 uhci_free_sqh(sc, upipe->u.intr.qhs[i]);
2126         kfree(upipe->u.intr.qhs, M_USBHC);
2127
2128         /* XXX free other resources */
2129 }
2130
2131 usbd_status
2132 uhci_device_request(usbd_xfer_handle xfer)
2133 {
2134         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2135         usb_device_request_t *req = &xfer->request;
2136         usbd_device_handle dev = upipe->pipe.device;
2137         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2138         int addr = dev->address;
2139         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2140         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2141         uhci_soft_td_t *setup, *data, *stat, *next, *dataend;
2142         uhci_soft_qh_t *sqh;
2143         int len;
2144         u_int32_t ls;
2145         usbd_status err;
2146         int isread;
2147
2148         DPRINTFN(3,("uhci_device_control type=0x%02x, request=0x%02x, "
2149                     "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
2150                     req->bmRequestType, req->bRequest, UGETW(req->wValue),
2151                     UGETW(req->wIndex), UGETW(req->wLength),
2152                     addr, endpt));
2153
2154         ls = dev->speed == USB_SPEED_LOW ? UHCI_TD_LS : 0;
2155         isread = req->bmRequestType & UT_READ;
2156         len = UGETW(req->wLength);
2157
2158         setup = upipe->u.ctl.setup;
2159         stat = upipe->u.ctl.stat;
2160         sqh = upipe->u.ctl.sqh;
2161
2162         /* Set up data transaction */
2163         if (len != 0) {
2164                 upipe->nexttoggle = 1;
2165                 err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
2166                                            &xfer->dmabuf, &data, &dataend);
2167                 if (err)
2168                         return (err);
2169                 next = data;
2170                 dataend->link.std = stat;
2171                 dataend->td.td_link = htole32(stat->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2172         } else {
2173                 next = stat;
2174         }
2175         upipe->u.ctl.length = len;
2176
2177         memcpy(KERNADDR(&upipe->u.ctl.reqdma, 0), req, sizeof *req);
2178
2179         setup->link.std = next;
2180         setup->td.td_link = htole32(next->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2181         setup->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2182                 UHCI_TD_ACTIVE);
2183         setup->td.td_token = htole32(UHCI_TD_SETUP(sizeof *req, endpt, addr));
2184         setup->td.td_buffer = htole32(DMAADDR(&upipe->u.ctl.reqdma, 0));
2185         stat->link.std = NULL;
2186         stat->td.td_link = htole32(UHCI_PTR_T);
2187         stat->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2188                 UHCI_TD_ACTIVE | UHCI_TD_IOC);
2189
2190         stat->td.td_token =
2191                 htole32(isread ? UHCI_TD_OUT(0, endpt, addr, 1) :
2192                                  UHCI_TD_IN (0, endpt, addr, 1));
2193         stat->td.td_buffer = htole32(0);
2194
2195 #ifdef USB_DEBUG
2196         if (uhcidebug > 10) {
2197                 DPRINTF(("uhci_device_request: before transfer\n"));
2198                 uhci_dump_tds(setup);
2199         }
2200 #endif
2201
2202         /* Set up interrupt info. */
2203         ii->xfer = xfer;
2204         ii->stdstart = setup;
2205         ii->stdend = stat;
2206 #ifdef DIAGNOSTIC
2207         if (!ii->isdone) {
2208                 kprintf("uhci_device_request: not done, ii=%p\n", ii);
2209         }
2210         ii->isdone = 0;
2211 #endif
2212
2213         sqh->elink = setup;
2214         sqh->qh.qh_elink = htole32(setup->physaddr | UHCI_PTR_TD);
2215
2216         crit_enter();
2217         if (dev->speed == USB_SPEED_LOW)
2218                 uhci_add_ls_ctrl(sc, sqh);
2219         else
2220                 uhci_add_hs_ctrl(sc, sqh);
2221         uhci_add_intr_info(sc, ii);
2222 #ifdef USB_DEBUG
2223         if (uhcidebug > 12) {
2224                 uhci_soft_td_t *std;
2225                 uhci_soft_qh_t *xqh;
2226                 uhci_soft_qh_t *sxqh;
2227                 int maxqh = 0;
2228                 uhci_physaddr_t link;
2229                 DPRINTF(("uhci_enter_ctl_q: follow from [0]\n"));
2230                 for (std = sc->sc_vframes[0].htd, link = 0;
2231                      (link & UHCI_PTR_QH) == 0;
2232                      std = std->link.std) {
2233                         link = le32toh(std->td.td_link);
2234                         uhci_dump_td(std);
2235                 }
2236                 sxqh = (uhci_soft_qh_t *)std;
2237                 uhci_dump_qh(sxqh);
2238                 for (xqh = sxqh;
2239                      xqh != NULL;
2240                      xqh = (maxqh++ == 5 || xqh->hlink == sxqh ||
2241                             xqh->hlink == xqh ? NULL : xqh->hlink)) {
2242                         uhci_dump_qh(xqh);
2243                 }
2244                 DPRINTF(("Enqueued QH:\n"));
2245                 uhci_dump_qh(sqh);
2246                 uhci_dump_tds(sqh->elink);
2247         }
2248 #endif
2249         if (xfer->timeout && !sc->sc_bus.use_polling) {
2250                 callout_reset(&xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
2251                             uhci_timeout, ii);
2252         }
2253         xfer->status = USBD_IN_PROGRESS;
2254         crit_exit();
2255
2256         return (USBD_NORMAL_COMPLETION);
2257 }
2258
2259 usbd_status
2260 uhci_device_isoc_transfer(usbd_xfer_handle xfer)
2261 {
2262         usbd_status err;
2263
2264         DPRINTFN(5,("uhci_device_isoc_transfer: xfer=%p\n", xfer));
2265
2266         /* Put it on our queue, */
2267         err = usb_insert_transfer(xfer);
2268
2269         /* bail out on error, */
2270         if (err && err != USBD_IN_PROGRESS)
2271                 return (err);
2272
2273         /* XXX should check inuse here */
2274
2275         /* insert into schedule, */
2276         uhci_device_isoc_enter(xfer);
2277
2278         /* and start if the pipe wasn't running */
2279         if (!err)
2280                 uhci_device_isoc_start(STAILQ_FIRST(&xfer->pipe->queue));
2281
2282         return (err);
2283 }
2284
2285 void
2286 uhci_device_isoc_enter(usbd_xfer_handle xfer)
2287 {
2288         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2289         usbd_device_handle dev = upipe->pipe.device;
2290         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2291         struct iso *iso = &upipe->u.iso;
2292         uhci_soft_td_t *std;
2293         u_int32_t buf, len, status;
2294         int i, next, nframes;
2295
2296         DPRINTFN(5,("uhci_device_isoc_enter: used=%d next=%d xfer=%p "
2297                     "nframes=%d\n",
2298                     iso->inuse, iso->next, xfer, xfer->nframes));
2299
2300         if (sc->sc_dying)
2301                 return;
2302
2303         if (xfer->status == USBD_IN_PROGRESS) {
2304                 /* This request has already been entered into the frame list */
2305                 kprintf("uhci_device_isoc_enter: xfer=%p in frame list\n", xfer);
2306                 /* XXX */
2307         }
2308
2309 #ifdef DIAGNOSTIC
2310         if (iso->inuse >= UHCI_VFRAMELIST_COUNT)
2311                 kprintf("uhci_device_isoc_enter: overflow!\n");
2312 #endif
2313
2314         next = iso->next;
2315         if (next == -1) {
2316                 /* Not in use yet, schedule it a few frames ahead. */
2317                 next = (UREAD2(sc, UHCI_FRNUM) + 3) % UHCI_VFRAMELIST_COUNT;
2318                 DPRINTFN(2,("uhci_device_isoc_enter: start next=%d\n", next));
2319         }
2320
2321         xfer->status = USBD_IN_PROGRESS;
2322         UXFER(xfer)->curframe = next;
2323
2324         buf = DMAADDR(&xfer->dmabuf, 0);
2325         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(0) |
2326                                      UHCI_TD_ACTIVE |
2327                                      UHCI_TD_IOS);
2328         nframes = xfer->nframes;
2329         crit_enter();
2330         for (i = 0; i < nframes; i++) {
2331                 std = iso->stds[next];
2332                 if (++next >= UHCI_VFRAMELIST_COUNT)
2333                         next = 0;
2334                 len = xfer->frlengths[i];
2335                 std->td.td_buffer = htole32(buf);
2336                 if (i == nframes - 1)
2337                         status |= UHCI_TD_IOC;
2338                 std->td.td_status = htole32(status);
2339                 std->td.td_token &= htole32(~UHCI_TD_MAXLEN_MASK);
2340                 std->td.td_token |= htole32(UHCI_TD_SET_MAXLEN(len));
2341 #ifdef USB_DEBUG
2342                 if (uhcidebug > 5) {
2343                         DPRINTFN(5,("uhci_device_isoc_enter: TD %d\n", i));
2344                         uhci_dump_td(std);
2345                 }
2346 #endif
2347                 buf += len;
2348         }
2349         iso->next = next;
2350         iso->inuse += xfer->nframes;
2351
2352         crit_exit();
2353 }
2354
2355 usbd_status
2356 uhci_device_isoc_start(usbd_xfer_handle xfer)
2357 {
2358         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2359         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
2360         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2361         uhci_soft_td_t *end;
2362         int i;
2363
2364         DPRINTFN(5,("uhci_device_isoc_start: xfer=%p\n", xfer));
2365
2366         if (sc->sc_dying)
2367                 return (USBD_IOERROR);
2368
2369 #ifdef DIAGNOSTIC
2370         if (xfer->status != USBD_IN_PROGRESS)
2371                 kprintf("uhci_device_isoc_start: not in progress %p\n", xfer);
2372 #endif
2373
2374         /* Find the last TD */
2375         i = UXFER(xfer)->curframe + xfer->nframes;
2376         if (i >= UHCI_VFRAMELIST_COUNT)
2377                 i -= UHCI_VFRAMELIST_COUNT;
2378         end = upipe->u.iso.stds[i];
2379
2380 #ifdef DIAGNOSTIC
2381         if (end == NULL) {
2382                 kprintf("uhci_device_isoc_start: end == NULL\n");
2383                 return (USBD_INVAL);
2384         }
2385 #endif
2386
2387         crit_enter();
2388
2389         /* Set up interrupt info. */
2390         ii->xfer = xfer;
2391         ii->stdstart = end;
2392         ii->stdend = end;
2393 #ifdef DIAGNOSTIC
2394         if (!ii->isdone)
2395                 kprintf("uhci_device_isoc_start: not done, ii=%p\n", ii);
2396         ii->isdone = 0;
2397 #endif
2398         uhci_add_intr_info(sc, ii);
2399
2400         crit_exit();
2401
2402         return (USBD_IN_PROGRESS);
2403 }
2404
2405 void
2406 uhci_device_isoc_abort(usbd_xfer_handle xfer)
2407 {
2408         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2409         uhci_soft_td_t **stds = upipe->u.iso.stds;
2410         uhci_soft_td_t *std;
2411         int i, n, nframes, maxlen, len;
2412
2413         crit_enter();
2414
2415         /* Transfer is already done. */
2416         if (xfer->status != USBD_NOT_STARTED &&
2417             xfer->status != USBD_IN_PROGRESS) {
2418                 crit_exit();
2419                 return;
2420         }
2421
2422         /* Give xfer the requested abort code. */
2423         xfer->status = USBD_CANCELLED;
2424
2425         /* make hardware ignore it, */
2426         nframes = xfer->nframes;
2427         n = UXFER(xfer)->curframe;
2428         maxlen = 0;
2429         for (i = 0; i < nframes; i++) {
2430                 std = stds[n];
2431                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
2432                 len = UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token));
2433                 if (len > maxlen)
2434                         maxlen = len;
2435                 if (++n >= UHCI_VFRAMELIST_COUNT)
2436                         n = 0;
2437         }
2438
2439         /* and wait until we are sure the hardware has finished. */
2440         delay(maxlen);
2441
2442 #ifdef DIAGNOSTIC
2443         UXFER(xfer)->iinfo.isdone = 1;
2444 #endif
2445         /* Run callback and remove from interrupt list. */
2446         usb_transfer_complete(xfer);
2447
2448         crit_exit();
2449 }
2450
2451 void
2452 uhci_device_isoc_close(usbd_pipe_handle pipe)
2453 {
2454         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2455         usbd_device_handle dev = upipe->pipe.device;
2456         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2457         uhci_soft_td_t *std, *vstd;
2458         struct iso *iso;
2459         int i;
2460
2461         /*
2462          * Make sure all TDs are marked as inactive.
2463          * Wait for completion.
2464          * Unschedule.
2465          * Deallocate.
2466          */
2467         iso = &upipe->u.iso;
2468
2469         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++)
2470                 iso->stds[i]->td.td_status &= htole32(~UHCI_TD_ACTIVE);
2471         usb_delay_ms(&sc->sc_bus, 2); /* wait for completion */
2472
2473         crit_enter();
2474         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2475                 std = iso->stds[i];
2476                 for (vstd = sc->sc_vframes[i].htd;
2477                      vstd != NULL && vstd->link.std != std;
2478                      vstd = vstd->link.std)
2479                         ;
2480                 if (vstd == NULL) {
2481                         /*panic*/
2482                         kprintf("uhci_device_isoc_close: %p not found\n", std);
2483                         crit_exit();
2484                         return;
2485                 }
2486                 vstd->link = std->link;
2487                 vstd->td.td_link = std->td.td_link;
2488                 uhci_free_std(sc, std);
2489         }
2490         crit_exit();
2491
2492         kfree(iso->stds, M_USBHC);
2493 }
2494
2495 usbd_status
2496 uhci_setup_isoc(usbd_pipe_handle pipe)
2497 {
2498         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2499         usbd_device_handle dev = upipe->pipe.device;
2500         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2501         int addr = upipe->pipe.device->address;
2502         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2503         int rd = UE_GET_DIR(endpt) == UE_DIR_IN;
2504         uhci_soft_td_t *std, *vstd;
2505         u_int32_t token;
2506         struct iso *iso;
2507         int i;
2508
2509         iso = &upipe->u.iso;
2510         iso->stds = kmalloc(UHCI_VFRAMELIST_COUNT * sizeof (uhci_soft_td_t *),
2511                            M_USBHC, M_INTWAIT);
2512
2513         token = rd ? UHCI_TD_IN (0, endpt, addr, 0) :
2514                      UHCI_TD_OUT(0, endpt, addr, 0);
2515
2516         /* Allocate the TDs and mark as inactive; */
2517         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2518                 std = uhci_alloc_std(sc);
2519                 if (std == 0)
2520                         goto bad;
2521                 std->td.td_status = htole32(UHCI_TD_IOS); /* iso, inactive */
2522                 std->td.td_token = htole32(token);
2523                 iso->stds[i] = std;
2524         }
2525
2526         /* Insert TDs into schedule. */
2527         crit_enter();
2528         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2529                 std = iso->stds[i];
2530                 vstd = sc->sc_vframes[i].htd;
2531                 std->link = vstd->link;
2532                 std->td.td_link = vstd->td.td_link;
2533                 vstd->link.std = std;
2534                 vstd->td.td_link = htole32(std->physaddr | UHCI_PTR_TD);
2535         }
2536         crit_exit();
2537
2538         iso->next = -1;
2539         iso->inuse = 0;
2540
2541         return (USBD_NORMAL_COMPLETION);
2542
2543  bad:
2544         while (--i >= 0)
2545                 uhci_free_std(sc, iso->stds[i]);
2546         kfree(iso->stds, M_USBHC);
2547         return (USBD_NOMEM);
2548 }
2549
2550 void
2551 uhci_device_isoc_done(usbd_xfer_handle xfer)
2552 {
2553         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2554
2555         DPRINTFN(4, ("uhci_isoc_done: length=%d\n", xfer->actlen));
2556
2557         if (ii->xfer != xfer)
2558                 /* Not on interrupt list, ignore it. */
2559                 return;
2560
2561         if (!uhci_active_intr_info(ii))
2562                 return;
2563
2564 #ifdef DIAGNOSTIC
2565         if (xfer->busy_free != XFER_BUSY) {
2566                 kprintf("uhci_device_isoc_done: xfer=%p not busy 0x%08x\n",
2567                        xfer, xfer->busy_free);
2568                 return;
2569         }
2570
2571         if (ii->stdend == NULL) {
2572                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2573 #ifdef USB_DEBUG
2574                 uhci_dump_ii(ii);
2575 #endif
2576                 return;
2577         }
2578 #endif
2579
2580         /* Turn off the interrupt since it is active even if the TD is not. */
2581         ii->stdend->td.td_status &= htole32(~UHCI_TD_IOC);
2582
2583         uhci_del_intr_info(ii); /* remove from active list */
2584
2585 #ifdef DIAGNOSTIC
2586         if (ii->stdend == NULL) {
2587                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2588 #ifdef USB_DEBUG
2589                 uhci_dump_ii(ii);
2590 #endif
2591                 return;
2592         }
2593 #endif
2594 }
2595
2596 void
2597 uhci_device_intr_done(usbd_xfer_handle xfer)
2598 {
2599         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2600         uhci_softc_t *sc = ii->sc;
2601         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2602         uhci_soft_qh_t *sqh;
2603         int i, npoll;
2604
2605         DPRINTFN(5, ("uhci_device_intr_done: length=%d\n", xfer->actlen));
2606
2607         npoll = upipe->u.intr.npoll;
2608         for(i = 0; i < npoll; i++) {
2609                 sqh = upipe->u.intr.qhs[i];
2610                 sqh->elink = NULL;
2611                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2612         }
2613         uhci_free_std_chain(sc, ii->stdstart, NULL);
2614
2615         /* XXX Wasteful. */
2616         if (xfer->pipe->repeat) {
2617                 uhci_soft_td_t *data, *dataend;
2618
2619                 DPRINTFN(5,("uhci_device_intr_done: requeueing\n"));
2620
2621                 /* This alloc cannot fail since we freed the chain above. */
2622                 uhci_alloc_std_chain(upipe, sc, xfer->length,
2623                                      upipe->u.intr.isread, xfer->flags,
2624                                      &xfer->dmabuf, &data, &dataend);
2625                 dataend->td.td_status |= htole32(UHCI_TD_IOC);
2626
2627 #ifdef USB_DEBUG
2628                 if (uhcidebug > 10) {
2629                         DPRINTF(("uhci_device_intr_done: data(1)\n"));
2630                         uhci_dump_tds(data);
2631                         uhci_dump_qh(upipe->u.intr.qhs[0]);
2632                 }
2633 #endif
2634
2635                 ii->stdstart = data;
2636                 ii->stdend = dataend;
2637 #ifdef DIAGNOSTIC
2638                 if (!ii->isdone) {
2639                         kprintf("uhci_device_intr_done: not done, ii=%p\n", ii);
2640                 }
2641                 ii->isdone = 0;
2642 #endif
2643                 for (i = 0; i < npoll; i++) {
2644                         sqh = upipe->u.intr.qhs[i];
2645                         sqh->elink = data;
2646                         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2647                 }
2648                 xfer->status = USBD_IN_PROGRESS;
2649                 /* The ii is already on the examined list, just leave it. */
2650         } else {
2651                 DPRINTFN(5,("uhci_device_intr_done: removing\n"));
2652                 if (uhci_active_intr_info(ii))
2653                         uhci_del_intr_info(ii);
2654         }
2655 }
2656
2657 /* Deallocate request data structures */
2658 void
2659 uhci_device_ctrl_done(usbd_xfer_handle xfer)
2660 {
2661         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2662         uhci_softc_t *sc = ii->sc;
2663         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2664
2665 #ifdef DIAGNOSTIC
2666         if (!(xfer->rqflags & URQ_REQUEST))
2667                 panic("uhci_device_ctrl_done: not a request");
2668 #endif
2669
2670         if (!uhci_active_intr_info(ii))
2671                 return;
2672
2673         uhci_del_intr_info(ii); /* remove from active list */
2674
2675         if (upipe->pipe.device->speed == USB_SPEED_LOW)
2676                 uhci_remove_ls_ctrl(sc, upipe->u.ctl.sqh);
2677         else
2678                 uhci_remove_hs_ctrl(sc, upipe->u.ctl.sqh);
2679
2680         if (upipe->u.ctl.length != 0)
2681                 uhci_free_std_chain(sc, ii->stdstart->link.std, ii->stdend);
2682
2683         DPRINTFN(5, ("uhci_device_ctrl_done: length=%d\n", xfer->actlen));
2684 }
2685
2686 /* Deallocate request data structures */
2687 void
2688 uhci_device_bulk_done(usbd_xfer_handle xfer)
2689 {
2690         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2691         uhci_softc_t *sc = ii->sc;
2692         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2693
2694         DPRINTFN(5,("uhci_device_bulk_done: xfer=%p ii=%p sc=%p upipe=%p\n",
2695                     xfer, ii, sc, upipe));
2696
2697         if (!uhci_active_intr_info(ii))
2698                 return;
2699
2700         uhci_del_intr_info(ii); /* remove from active list */
2701
2702         uhci_remove_bulk(sc, upipe->u.bulk.sqh);
2703
2704         uhci_free_std_chain(sc, ii->stdstart, NULL);
2705
2706         DPRINTFN(5, ("uhci_device_bulk_done: length=%d\n", xfer->actlen));
2707 }
2708
2709 /* Add interrupt QH, called with vflock. */
2710 void
2711 uhci_add_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2712 {
2713         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2714         uhci_soft_qh_t *eqh;
2715
2716         DPRINTFN(4, ("uhci_add_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2717
2718         eqh = vf->eqh;
2719         sqh->hlink       = eqh->hlink;
2720         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
2721         eqh->hlink       = sqh;
2722         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
2723         vf->eqh = sqh;
2724         vf->bandwidth++;
2725 }
2726
2727 /* Remove interrupt QH. */
2728 void
2729 uhci_remove_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2730 {
2731         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2732         uhci_soft_qh_t *pqh;
2733
2734         DPRINTFN(4, ("uhci_remove_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2735
2736         /* See comment in uhci_remove_ctrl() */
2737         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
2738                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2739                 delay(UHCI_QH_REMOVE_DELAY);
2740         }
2741
2742         pqh = uhci_find_prev_qh(vf->hqh, sqh);
2743         pqh->hlink       = sqh->hlink;
2744         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
2745         delay(UHCI_QH_REMOVE_DELAY);
2746         if (vf->eqh == sqh)
2747                 vf->eqh = pqh;
2748         vf->bandwidth--;
2749 }
2750
2751 usbd_status
2752 uhci_device_setintr(uhci_softc_t *sc, struct uhci_pipe *upipe, int ival)
2753 {
2754         uhci_soft_qh_t *sqh;
2755         int i, npoll;
2756         u_int bestbw, bw, bestoffs, offs;
2757
2758         DPRINTFN(2, ("uhci_device_setintr: pipe=%p\n", upipe));
2759         if (ival == 0) {
2760                 kprintf("uhci_setintr: 0 interval\n");
2761                 return (USBD_INVAL);
2762         }
2763
2764         if (ival > UHCI_VFRAMELIST_COUNT)
2765                 ival = UHCI_VFRAMELIST_COUNT;
2766         npoll = (UHCI_VFRAMELIST_COUNT + ival - 1) / ival;
2767         DPRINTFN(2, ("uhci_device_setintr: ival=%d npoll=%d\n", ival, npoll));
2768
2769         upipe->u.intr.npoll = npoll;
2770         upipe->u.intr.qhs =
2771                 kmalloc(npoll * sizeof(uhci_soft_qh_t *), M_USBHC, M_INTWAIT);
2772
2773         /*
2774          * Figure out which offset in the schedule that has most
2775          * bandwidth left over.
2776          */
2777 #define MOD(i) ((i) & (UHCI_VFRAMELIST_COUNT-1))
2778         for (bestoffs = offs = 0, bestbw = ~0; offs < ival; offs++) {
2779                 for (bw = i = 0; i < npoll; i++)
2780                         bw += sc->sc_vframes[MOD(i * ival + offs)].bandwidth;
2781                 if (bw < bestbw) {
2782                         bestbw = bw;
2783                         bestoffs = offs;
2784                 }
2785         }
2786         DPRINTFN(1, ("uhci_device_setintr: bw=%d offs=%d\n", bestbw, bestoffs));
2787
2788         for(i = 0; i < npoll; i++) {
2789                 upipe->u.intr.qhs[i] = sqh = uhci_alloc_sqh(sc);
2790                 sqh->elink = NULL;
2791                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2792                 sqh->pos = MOD(i * ival + bestoffs);
2793         }
2794 #undef MOD
2795
2796         crit_enter();
2797         /* Enter QHs into the controller data structures. */
2798         for(i = 0; i < npoll; i++)
2799                 uhci_add_intr(sc, upipe->u.intr.qhs[i]);
2800         crit_exit();
2801
2802         DPRINTFN(5, ("uhci_device_setintr: returns %p\n", upipe));
2803         return (USBD_NORMAL_COMPLETION);
2804 }
2805
2806 /* Open a new pipe. */
2807 usbd_status
2808 uhci_open(usbd_pipe_handle pipe)
2809 {
2810         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2811         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2812         usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
2813         usbd_status err;
2814         int ival;
2815
2816         DPRINTFN(1, ("uhci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
2817                      pipe, pipe->device->address,
2818                      ed->bEndpointAddress, sc->sc_addr));
2819
2820         upipe->aborting = 0;
2821         upipe->nexttoggle = pipe->endpoint->savedtoggle;
2822
2823         if (pipe->device->address == sc->sc_addr) {
2824                 switch (ed->bEndpointAddress) {
2825                 case USB_CONTROL_ENDPOINT:
2826                         pipe->methods = &uhci_root_ctrl_methods;
2827                         break;
2828                 case UE_DIR_IN | UHCI_INTR_ENDPT:
2829                         pipe->methods = &uhci_root_intr_methods;
2830                         break;
2831                 default:
2832                         return (USBD_INVAL);
2833                 }
2834         } else {
2835                 switch (ed->bmAttributes & UE_XFERTYPE) {
2836                 case UE_CONTROL:
2837                         pipe->methods = &uhci_device_ctrl_methods;
2838                         upipe->u.ctl.sqh = uhci_alloc_sqh(sc);
2839                         if (upipe->u.ctl.sqh == NULL)
2840                                 goto bad;
2841                         upipe->u.ctl.setup = uhci_alloc_std(sc);
2842                         if (upipe->u.ctl.setup == NULL) {
2843                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2844                                 goto bad;
2845                         }
2846                         upipe->u.ctl.stat = uhci_alloc_std(sc);
2847                         if (upipe->u.ctl.stat == NULL) {
2848                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2849                                 uhci_free_std(sc, upipe->u.ctl.setup);
2850                                 goto bad;
2851                         }
2852                         err = usb_allocmem(&sc->sc_bus,
2853                                   sizeof(usb_device_request_t),
2854                                   0, &upipe->u.ctl.reqdma);
2855                         if (err) {
2856                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2857                                 uhci_free_std(sc, upipe->u.ctl.setup);
2858                                 uhci_free_std(sc, upipe->u.ctl.stat);
2859                                 goto bad;
2860                         }
2861                         break;
2862                 case UE_INTERRUPT:
2863                         pipe->methods = &uhci_device_intr_methods;
2864                         ival = pipe->interval;
2865                         if (ival == USBD_DEFAULT_INTERVAL)
2866                                 ival = ed->bInterval;
2867                         return (uhci_device_setintr(sc, upipe, ival));
2868                 case UE_ISOCHRONOUS:
2869                         pipe->methods = &uhci_device_isoc_methods;
2870                         return (uhci_setup_isoc(pipe));
2871                 case UE_BULK:
2872                         pipe->methods = &uhci_device_bulk_methods;
2873                         upipe->u.bulk.sqh = uhci_alloc_sqh(sc);
2874                         if (upipe->u.bulk.sqh == NULL)
2875                                 goto bad;
2876                         break;
2877                 }
2878         }
2879         return (USBD_NORMAL_COMPLETION);
2880
2881  bad:
2882         return (USBD_NOMEM);
2883 }
2884
2885 /*
2886  * Data structures and routines to emulate the root hub.
2887  */
2888 usb_device_descriptor_t uhci_devd = {
2889         USB_DEVICE_DESCRIPTOR_SIZE,
2890         UDESC_DEVICE,           /* type */
2891         {0x00, 0x01},           /* USB version */
2892         UDCLASS_HUB,            /* class */
2893         UDSUBCLASS_HUB,         /* subclass */
2894         UDPROTO_FSHUB,          /* protocol */
2895         64,                     /* max packet */
2896         {0},{0},{0x00,0x01},    /* device id */
2897         1,2,0,                  /* string indicies */
2898         1                       /* # of configurations */
2899 };
2900
2901 usb_config_descriptor_t uhci_confd = {
2902         USB_CONFIG_DESCRIPTOR_SIZE,
2903         UDESC_CONFIG,
2904         {USB_CONFIG_DESCRIPTOR_SIZE +
2905          USB_INTERFACE_DESCRIPTOR_SIZE +
2906          USB_ENDPOINT_DESCRIPTOR_SIZE},
2907         1,
2908         1,
2909         0,
2910         UC_SELF_POWERED,
2911         0                       /* max power */
2912 };
2913
2914 usb_interface_descriptor_t uhci_ifcd = {
2915         USB_INTERFACE_DESCRIPTOR_SIZE,
2916         UDESC_INTERFACE,
2917         0,
2918         0,
2919         1,
2920         UICLASS_HUB,
2921         UISUBCLASS_HUB,
2922         UIPROTO_FSHUB,
2923         0
2924 };
2925
2926 usb_endpoint_descriptor_t uhci_endpd = {
2927         USB_ENDPOINT_DESCRIPTOR_SIZE,
2928         UDESC_ENDPOINT,
2929         UE_DIR_IN | UHCI_INTR_ENDPT,
2930         UE_INTERRUPT,
2931         {8},
2932         255
2933 };
2934
2935 usb_hub_descriptor_t uhci_hubd_piix = {
2936         USB_HUB_DESCRIPTOR_SIZE,
2937         UDESC_HUB,
2938         2,
2939         { UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL, 0 },
2940         50,                     /* power on to power good */
2941         0,
2942         { 0x00 },               /* both ports are removable */
2943 };
2944
2945 int
2946 uhci_str(usb_string_descriptor_t *p, int l, char *s)
2947 {
2948         int i;
2949
2950         if (l == 0)
2951                 return (0);
2952         p->bLength = 2 * strlen(s) + 2;
2953         if (l == 1)
2954                 return (1);
2955         p->bDescriptorType = UDESC_STRING;
2956         l -= 2;
2957         for (i = 0; s[i] && l > 1; i++, l -= 2)
2958                 USETW2(p->bString[i], 0, s[i]);
2959         return (2*i+2);
2960 }
2961
2962 /*
2963  * The USB hub protocol requires that SET_FEATURE(PORT_RESET) also
2964  * enables the port, and also states that SET_FEATURE(PORT_ENABLE)
2965  * should not be used by the USB subsystem.  As we cannot issue a
2966  * SET_FEATURE(PORT_ENABLE) externally, we must ensure that the port
2967  * will be enabled as part of the reset.
2968  *
2969  * On the VT83C572, the port cannot be successfully enabled until the
2970  * outstanding "port enable change" and "connection status change"
2971  * events have been reset.
2972  */
2973 static usbd_status
2974 uhci_portreset(uhci_softc_t *sc, int index)
2975 {
2976         int lim, port, x;
2977
2978         if (index == 1)
2979                 port = UHCI_PORTSC1;
2980         else if (index == 2)
2981                 port = UHCI_PORTSC2;
2982         else
2983                 return (USBD_IOERROR);
2984
2985         x = URWMASK(UREAD2(sc, port));
2986         UWRITE2(sc, port, x | UHCI_PORTSC_PR);
2987
2988         usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY);
2989
2990         DPRINTFN(3,("uhci port %d reset, status0 = 0x%04x\n",
2991                     index, UREAD2(sc, port)));
2992
2993         x = URWMASK(UREAD2(sc, port));
2994         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
2995
2996         delay(100);
2997
2998         DPRINTFN(3,("uhci port %d reset, status1 = 0x%04x\n",
2999                     index, UREAD2(sc, port)));
3000
3001         x = URWMASK(UREAD2(sc, port));
3002         UWRITE2(sc, port, x  | UHCI_PORTSC_PE);
3003
3004         for (lim = 10; --lim > 0;) {
3005                 usb_delay_ms(&sc->sc_bus, USB_PORT_RESET_DELAY);
3006
3007                 x = UREAD2(sc, port);
3008
3009                 DPRINTFN(3,("uhci port %d iteration %u, status = 0x%04x\n",
3010                             index, lim, x));
3011
3012                 if (!(x & UHCI_PORTSC_CCS)) {
3013                         /*
3014                          * No device is connected (or was disconnected
3015                          * during reset).  Consider the port reset.
3016                          * The delay must be long enough to ensure on
3017                          * the initial iteration that the device
3018                          * connection will have been registered.  50ms
3019                          * appears to be sufficient, but 20ms is not.
3020                          */
3021                         DPRINTFN(3,("uhci port %d loop %u, device detached\n",
3022                                     index, lim));
3023                         break;
3024                 }
3025
3026                 if (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)) {
3027                         /*
3028                          * Port enabled changed and/or connection
3029                          * status changed were set.  Reset either or
3030                          * both raised flags (by writing a 1 to that
3031                          * bit), and wait again for state to settle.
3032                          */
3033                         UWRITE2(sc, port, URWMASK(x) |
3034                                 (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)));
3035                         continue;
3036                 }
3037
3038                 if (x & UHCI_PORTSC_PE)
3039                         /* Port is enabled */
3040                         break;
3041
3042                 UWRITE2(sc, port, URWMASK(x) | UHCI_PORTSC_PE);
3043         }
3044
3045         DPRINTFN(3,("uhci port %d reset, status2 = 0x%04x\n",
3046                     index, UREAD2(sc, port)));
3047
3048         if (lim <= 0) {
3049                 DPRINTFN(1,("uhci port %d reset timed out\n", index));
3050                 return (USBD_TIMEOUT);
3051         }
3052
3053         sc->sc_isreset = 1;
3054         return (USBD_NORMAL_COMPLETION);
3055 }
3056
3057 /*
3058  * Simulate a hardware hub by handling all the necessary requests.
3059  */
3060 usbd_status
3061 uhci_root_ctrl_transfer(usbd_xfer_handle xfer)
3062 {
3063         usbd_status err;
3064
3065         /* Insert last in queue. */
3066         err = usb_insert_transfer(xfer);
3067         if (err)
3068                 return (err);
3069
3070         /*
3071          * Pipe isn't running (otherwise err would be USBD_INPROG),
3072          * so start it first.
3073          */
3074         return (uhci_root_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
3075 }
3076
3077 usbd_status
3078 uhci_root_ctrl_start(usbd_xfer_handle xfer)
3079 {
3080         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3081         usb_device_request_t *req;
3082         void *buf = NULL;
3083         int port, x;
3084         int len, value, index, status, change, l, totlen = 0;
3085         usb_port_status_t ps;
3086         usbd_status err;
3087
3088         if (sc->sc_dying)
3089                 return (USBD_IOERROR);
3090
3091 #ifdef DIAGNOSTIC
3092         if (!(xfer->rqflags & URQ_REQUEST))
3093                 panic("uhci_root_ctrl_transfer: not a request");
3094 #endif
3095         req = &xfer->request;
3096
3097         DPRINTFN(2,("uhci_root_ctrl_control type=0x%02x request=%02x\n",
3098                     req->bmRequestType, req->bRequest));
3099
3100         len = UGETW(req->wLength);
3101         value = UGETW(req->wValue);
3102         index = UGETW(req->wIndex);
3103
3104         if (len != 0)
3105                 buf = KERNADDR(&xfer->dmabuf, 0);
3106
3107 #define C(x,y) ((x) | ((y) << 8))
3108         switch(C(req->bRequest, req->bmRequestType)) {
3109         case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
3110         case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
3111         case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
3112                 /*
3113                  * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
3114                  * for the integrated root hub.
3115                  */
3116                 break;
3117         case C(UR_GET_CONFIG, UT_READ_DEVICE):
3118                 if (len > 0) {
3119                         *(u_int8_t *)buf = sc->sc_conf;
3120                         totlen = 1;
3121                 }
3122                 break;
3123         case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
3124                 DPRINTFN(2,("uhci_root_ctrl_control wValue=0x%04x\n", value));
3125                 switch(value >> 8) {
3126                 case UDESC_DEVICE:
3127                         if ((value & 0xff) != 0) {
3128                                 err = USBD_IOERROR;
3129                                 goto ret;
3130                         }
3131                         totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
3132                         USETW(uhci_devd.idVendor, sc->sc_id_vendor);
3133                         memcpy(buf, &uhci_devd, l);
3134                         break;
3135                 case UDESC_CONFIG:
3136                         if ((value & 0xff) != 0) {
3137                                 err = USBD_IOERROR;
3138                                 goto ret;
3139                         }
3140                         totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
3141                         memcpy(buf, &uhci_confd, l);
3142                         buf = (char *)buf + l;
3143                         len -= l;
3144                         l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
3145                         totlen += l;
3146                         memcpy(buf, &uhci_ifcd, l);
3147                         buf = (char *)buf + l;
3148                         len -= l;
3149                         l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
3150                         totlen += l;
3151                         memcpy(buf, &uhci_endpd, l);
3152                         break;
3153                 case UDESC_STRING:
3154                         if (len == 0)
3155                                 break;
3156                         *(u_int8_t *)buf = 0;
3157                         totlen = 1;
3158                         switch (value & 0xff) {
3159                         case 1: /* Vendor */
3160                                 totlen = uhci_str(buf, len, sc->sc_vendor);
3161                                 break;
3162                         case 2: /* Product */
3163                                 totlen = uhci_str(buf, len, "UHCI root hub");
3164                                 break;
3165                         }
3166                         break;
3167                 default:
3168                         err = USBD_IOERROR;
3169                         goto ret;
3170                 }
3171                 break;
3172         case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
3173                 if (len > 0) {
3174                         *(u_int8_t *)buf = 0;
3175                         totlen = 1;
3176                 }
3177                 break;
3178         case C(UR_GET_STATUS, UT_READ_DEVICE):
3179                 if (len > 1) {
3180                         USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
3181                         totlen = 2;
3182                 }
3183                 break;
3184         case C(UR_GET_STATUS, UT_READ_INTERFACE):
3185         case C(UR_GET_STATUS, UT_READ_ENDPOINT):
3186                 if (len > 1) {
3187                         USETW(((usb_status_t *)buf)->wStatus, 0);
3188                         totlen = 2;
3189                 }
3190                 break;
3191         case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
3192                 if (value >= USB_MAX_DEVICES) {
3193                         err = USBD_IOERROR;
3194                         goto ret;
3195                 }
3196                 sc->sc_addr = value;
3197                 break;
3198         case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
3199                 if (value != 0 && value != 1) {
3200                         err = USBD_IOERROR;
3201                         goto ret;
3202                 }
3203                 sc->sc_conf = value;
3204                 break;
3205         case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
3206                 break;
3207         case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
3208         case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
3209         case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
3210                 err = USBD_IOERROR;
3211                 goto ret;
3212         case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
3213                 break;
3214         case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
3215                 break;
3216         /* Hub requests */
3217         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
3218                 break;
3219         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
3220                 DPRINTFN(3, ("uhci_root_ctrl_control: UR_CLEAR_PORT_FEATURE "
3221                              "port=%d feature=%d\n",
3222                              index, value));
3223                 if (index == 1)
3224                         port = UHCI_PORTSC1;
3225                 else if (index == 2)
3226                         port = UHCI_PORTSC2;
3227                 else {
3228                         err = USBD_IOERROR;
3229                         goto ret;
3230                 }
3231                 switch(value) {
3232                 case UHF_PORT_ENABLE:
3233                         x = URWMASK(UREAD2(sc, port));
3234                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PE);
3235                         break;
3236                 case UHF_PORT_SUSPEND:
3237                         x = URWMASK(UREAD2(sc, port));
3238                         UWRITE2(sc, port, x & ~UHCI_PORTSC_SUSP);
3239                         break;
3240                 case UHF_PORT_RESET:
3241                         x = URWMASK(UREAD2(sc, port));
3242                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
3243                         break;
3244                 case UHF_C_PORT_CONNECTION:
3245                         x = URWMASK(UREAD2(sc, port));
3246                         UWRITE2(sc, port, x | UHCI_PORTSC_CSC);
3247                         break;
3248                 case UHF_C_PORT_ENABLE:
3249                         x = URWMASK(UREAD2(sc, port));
3250                         UWRITE2(sc, port, x | UHCI_PORTSC_POEDC);
3251                         break;
3252                 case UHF_C_PORT_OVER_CURRENT:
3253                         x = URWMASK(UREAD2(sc, port));
3254                         UWRITE2(sc, port, x | UHCI_PORTSC_OCIC);
3255                         break;
3256                 case UHF_C_PORT_RESET:
3257                         sc->sc_isreset = 0;
3258                         err = USBD_NORMAL_COMPLETION;
3259                         goto ret;
3260                 case UHF_PORT_CONNECTION:
3261                 case UHF_PORT_OVER_CURRENT:
3262                 case UHF_PORT_POWER:
3263                 case UHF_PORT_LOW_SPEED:
3264                 case UHF_C_PORT_SUSPEND:
3265                 default:
3266                         err = USBD_IOERROR;
3267                         goto ret;
3268                 }
3269                 break;
3270         case C(UR_GET_BUS_STATE, UT_READ_CLASS_OTHER):
3271                 if (index == 1)
3272                         port = UHCI_PORTSC1;
3273                 else if (index == 2)
3274                         port = UHCI_PORTSC2;
3275                 else {
3276                         err = USBD_IOERROR;
3277                         goto ret;
3278                 }
3279                 if (len > 0) {
3280                         *(u_int8_t *)buf =
3281                                 (UREAD2(sc, port) & UHCI_PORTSC_LS) >>
3282                                 UHCI_PORTSC_LS_SHIFT;
3283                         totlen = 1;
3284                 }
3285                 break;
3286         case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
3287                 if ((value & 0xff) != 0) {
3288                         err = USBD_IOERROR;
3289                         goto ret;
3290                 }
3291                 l = min(len, USB_HUB_DESCRIPTOR_SIZE);
3292                 totlen = l;
3293                 memcpy(buf, &uhci_hubd_piix, l);
3294                 break;
3295         case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
3296                 if (len != 4) {
3297                         err = USBD_IOERROR;
3298                         goto ret;
3299                 }
3300                 memset(buf, 0, len);
3301                 totlen = len;
3302                 break;
3303         case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
3304                 if (index == 1)
3305                         port = UHCI_PORTSC1;
3306                 else if (index == 2)
3307                         port = UHCI_PORTSC2;
3308                 else {
3309                         err = USBD_IOERROR;
3310                         goto ret;
3311                 }
3312                 if (len != 4) {
3313                         err = USBD_IOERROR;
3314                         goto ret;
3315                 }
3316                 x = UREAD2(sc, port);
3317                 status = change = 0;
3318                 if (x & UHCI_PORTSC_CCS)
3319                         status |= UPS_CURRENT_CONNECT_STATUS;
3320                 if (x & UHCI_PORTSC_CSC)
3321                         change |= UPS_C_CONNECT_STATUS;
3322                 if (x & UHCI_PORTSC_PE)
3323                         status |= UPS_PORT_ENABLED;
3324                 if (x & UHCI_PORTSC_POEDC)
3325                         change |= UPS_C_PORT_ENABLED;
3326                 if (x & UHCI_PORTSC_OCI)
3327                         status |= UPS_OVERCURRENT_INDICATOR;
3328                 if (x & UHCI_PORTSC_OCIC)
3329                         change |= UPS_C_OVERCURRENT_INDICATOR;
3330                 if (x & UHCI_PORTSC_SUSP)
3331                         status |= UPS_SUSPEND;
3332                 if (x & UHCI_PORTSC_LSDA)
3333                         status |= UPS_LOW_SPEED;
3334                 status |= UPS_PORT_POWER;
3335                 if (sc->sc_isreset)
3336                         change |= UPS_C_PORT_RESET;
3337                 USETW(ps.wPortStatus, status);
3338                 USETW(ps.wPortChange, change);
3339                 l = min(len, sizeof ps);
3340                 memcpy(buf, &ps, l);
3341                 totlen = l;
3342                 break;
3343         case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
3344                 err = USBD_IOERROR;
3345                 goto ret;
3346         case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
3347                 break;
3348         case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
3349                 if (index == 1)
3350                         port = UHCI_PORTSC1;
3351                 else if (index == 2)
3352                         port = UHCI_PORTSC2;
3353                 else {
3354                         err = USBD_IOERROR;
3355                         goto ret;
3356                 }
3357                 switch(value) {
3358                 case UHF_PORT_ENABLE:
3359                         x = URWMASK(UREAD2(sc, port));
3360                         UWRITE2(sc, port, x | UHCI_PORTSC_PE);
3361                         break;
3362                 case UHF_PORT_SUSPEND:
3363                         x = URWMASK(UREAD2(sc, port));
3364                         UWRITE2(sc, port, x | UHCI_PORTSC_SUSP);
3365                         break;
3366                 case UHF_PORT_RESET:
3367                         err = uhci_portreset(sc, index);
3368                         goto ret;
3369                 case UHF_PORT_POWER:
3370                         /* Pretend we turned on power */
3371                         err = USBD_NORMAL_COMPLETION;
3372                         goto ret;
3373                 case UHF_C_PORT_CONNECTION:
3374                 case UHF_C_PORT_ENABLE:
3375                 case UHF_C_PORT_OVER_CURRENT:
3376                 case UHF_PORT_CONNECTION:
3377                 case UHF_PORT_OVER_CURRENT:
3378                 case UHF_PORT_LOW_SPEED:
3379                 case UHF_C_PORT_SUSPEND:
3380                 case UHF_C_PORT_RESET:
3381                 default:
3382                         err = USBD_IOERROR;
3383                         goto ret;
3384                 }
3385                 break;
3386         default:
3387                 err = USBD_IOERROR;
3388                 goto ret;
3389         }
3390         xfer->actlen = totlen;
3391         err = USBD_NORMAL_COMPLETION;
3392  ret:
3393         xfer->status = err;
3394         crit_enter();
3395         usb_transfer_complete(xfer);
3396         crit_exit();
3397         return (USBD_IN_PROGRESS);
3398 }
3399
3400 /* Abort a root control request. */
3401 void
3402 uhci_root_ctrl_abort(usbd_xfer_handle xfer)
3403 {
3404         /* Nothing to do, all transfers are synchronous. */
3405 }
3406
3407 /* Close the root pipe. */
3408 void
3409 uhci_root_ctrl_close(usbd_pipe_handle pipe)
3410 {
3411         DPRINTF(("uhci_root_ctrl_close\n"));
3412 }
3413
3414 /* Abort a root interrupt request. */
3415 void
3416 uhci_root_intr_abort(usbd_xfer_handle xfer)
3417 {
3418         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3419
3420         callout_stop(&sc->sc_poll_handle);
3421         sc->sc_intr_xfer = NULL;
3422
3423         if (xfer->pipe->intrxfer == xfer) {
3424                 DPRINTF(("uhci_root_intr_abort: remove\n"));
3425                 xfer->pipe->intrxfer = 0;
3426         }
3427         xfer->status = USBD_CANCELLED;
3428 #ifdef DIAGNOSTIC
3429         UXFER(xfer)->iinfo.isdone = 1;
3430 #endif
3431         usb_transfer_complete(xfer);
3432 }
3433
3434 usbd_status
3435 uhci_root_intr_transfer(usbd_xfer_handle xfer)
3436 {
3437         usbd_status err;
3438
3439         /* Insert last in queue. */
3440         err = usb_insert_transfer(xfer);
3441         if (err)
3442                 return (err);
3443
3444         /*
3445          * Pipe isn't running (otherwise err would be USBD_INPROG),
3446          * so start it first.
3447          */
3448         return (uhci_root_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
3449 }
3450
3451 /* Start a transfer on the root interrupt pipe */
3452 usbd_status
3453 uhci_root_intr_start(usbd_xfer_handle xfer)
3454 {
3455         usbd_pipe_handle pipe = xfer->pipe;
3456         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3457
3458         DPRINTFN(3, ("uhci_root_intr_start: xfer=%p len=%d flags=%d\n",
3459                      xfer, xfer->length, xfer->flags));
3460
3461         if (sc->sc_dying)
3462                 return (USBD_IOERROR);
3463
3464         sc->sc_ival = MS_TO_TICKS(xfer->pipe->endpoint->edesc->bInterval);
3465         callout_reset(&sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
3466         sc->sc_intr_xfer = xfer;
3467         return (USBD_IN_PROGRESS);
3468 }
3469
3470 /* Close the root interrupt pipe. */
3471 void
3472 uhci_root_intr_close(usbd_pipe_handle pipe)
3473 {
3474         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3475
3476         callout_stop(&sc->sc_poll_handle);
3477         sc->sc_intr_xfer = NULL;
3478         DPRINTF(("uhci_root_intr_close\n"));
3479 }