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 1.21 2007/05/13 22:25:42 swildner 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 #if defined(__NetBSD__) || defined(__OpenBSD__)
  67 #include <sys/device.h>
  68 #include <sys/select.h>
  69 #elif defined(__FreeBSD__) || defined(__DragonFly__)
  70 #include <sys/endian.h>
  71 #include <sys/module.h>
  72 #include <sys/bus.h>
  73 #if defined(DIAGNOSTIC) && defined(__i386__)
  74 #include <machine/cpu.h>
  75 #endif
  76 #endif
  77 #include <sys/proc.h>
  78 #include <sys/queue.h>
  79 #include <sys/sysctl.h>
  80 #ifdef __DragonFly__
  81 #include <sys/thread2.h>
  82 #endif
  83
  84 #include <machine/endian.h>
  85
  86 #include <bus/usb/usb.h>
  87 #include <bus/usb/usbdi.h>
  88 #include <bus/usb/usbdivar.h>
  89 #include <bus/usb/usb_mem.h>
  90 #include <bus/usb/usb_quirks.h>
  91
  92 #include <bus/usb/uhcireg.h>
  93 #include <bus/usb/uhcivar.h>
  94
  95 /* Use bandwidth reclamation for control transfers. Some devices choke on it. */
  96 /*#define UHCI_CTL_LOOP */
  97
  98 #if defined(__FreeBSD__) || defined(__DragonFly__)
  99 #define delay(d)                DELAY(d)
 100 #endif
 101
 102 #define MS_TO_TICKS(ms) ((ms) * hz / 1000)
 103
 104 #if defined(__OpenBSD__)
 105 struct cfdriver uhci_cd = {
 106         NULL, "uhci", DV_DULL
 107 };
 108 #endif
 109
 110 #ifdef USB_DEBUG
 111 uhci_softc_t *thesc;
 112 #define DPRINTF(x)      if (uhcidebug) kprintf x
 113 #define DPRINTFN(n,x)   if (uhcidebug>(n)) kprintf x
 114 int uhcidebug = 0;
 115 int uhcinoloop = 0;
 116 SYSCTL_NODE(_hw_usb, OID_AUTO, uhci, CTLFLAG_RW, 0, "USB uhci");
 117 SYSCTL_INT(_hw_usb_uhci, OID_AUTO, debug, CTLFLAG_RW,
 118            &uhcidebug, 0, "uhci debug level");
 119 SYSCTL_INT(_hw_usb_uhci, OID_AUTO, loop, CTLFLAG_RW,
 120            &uhcinoloop, 0, "uhci noloop");
 121 #ifndef __NetBSD__
 122 #define bitmask_snprintf(q,f,b,l) ksnprintf((b), (l), "%b", (q), (f))
 123 #endif
 124 #else
 125 #define DPRINTF(x)
 126 #define DPRINTFN(n,x)
 127 #endif
 128
 129 /*
 130  * The UHCI controller is little endian, so on big endian machines
 131  * the data strored in memory needs to be swapped.
 132  */
 133 #if defined(__OpenBSD__)
 134 #if BYTE_ORDER == BIG_ENDIAN
 135 #define htole32(x) (bswap32(x))
 136 #define le32toh(x) (bswap32(x))
 137 #else
 138 #define htole32(x) (x)
 139 #define le32toh(x) (x)
 140 #endif
 141 #endif
 142
 143 struct uhci_pipe {
 144         struct usbd_pipe pipe;
 145         int nexttoggle;
 146
 147         u_char aborting;
 148         usbd_xfer_handle abortstart, abortend;
 149
 150         /* Info needed for different pipe kinds. */
 151         union {
 152                 /* Control pipe */
 153                 struct {
 154                         uhci_soft_qh_t *sqh;
 155                         usb_dma_t reqdma;
 156                         uhci_soft_td_t *setup, *stat;
 157                         u_int length;
 158                 } ctl;
 159                 /* Interrupt pipe */
 160                 struct {
 161                         int npoll;
 162                         int isread;
 163                         uhci_soft_qh_t **qhs;
 164                 } intr;
 165                 /* Bulk pipe */
 166                 struct {
 167                         uhci_soft_qh_t *sqh;
 168                         u_int length;
 169                         int isread;
 170                 } bulk;
 171                 /* Iso pipe */
 172                 struct iso {
 173                         uhci_soft_td_t **stds;
 174                         int next, inuse;
 175                 } iso;
 176         } u;
 177 };
 178
 179 Static void             uhci_globalreset(uhci_softc_t *);
 180 Static usbd_status      uhci_portreset(uhci_softc_t*, int);
 181 Static void             uhci_reset(uhci_softc_t *);
 182 #if defined(__NetBSD__) || defined(__OpenBSD__)
 183 Static void             uhci_shutdown(void *v);
 184 Static void             uhci_power(int, void *);
 185 #endif
 186 Static usbd_status      uhci_run(uhci_softc_t *, int run);
 187 Static uhci_soft_td_t  *uhci_alloc_std(uhci_softc_t *);
 188 Static void             uhci_free_std(uhci_softc_t *, uhci_soft_td_t *);
 189 Static uhci_soft_qh_t  *uhci_alloc_sqh(uhci_softc_t *);
 190 Static void             uhci_free_sqh(uhci_softc_t *, uhci_soft_qh_t *);
 191 #if 0
 192 Static void             uhci_enter_ctl_q(uhci_softc_t *, uhci_soft_qh_t *,
 193                                          uhci_intr_info_t *);
 194 Static void             uhci_exit_ctl_q(uhci_softc_t *, uhci_soft_qh_t *);
 195 #endif
 196
 197 Static void             uhci_free_std_chain(uhci_softc_t *,
 198                                             uhci_soft_td_t *, uhci_soft_td_t *);
 199 Static usbd_status      uhci_alloc_std_chain(struct uhci_pipe *,
 200                             uhci_softc_t *, int, int, u_int16_t, usb_dma_t *,
 201                             uhci_soft_td_t **, uhci_soft_td_t **);
 202 Static void             uhci_poll_hub(void *);
 203 Static void             uhci_waitintr(uhci_softc_t *, usbd_xfer_handle);
 204 Static void             uhci_check_intr(uhci_softc_t *, uhci_intr_info_t *);
 205 Static void             uhci_idone(uhci_intr_info_t *);
 206
 207 Static void             uhci_abort_xfer(usbd_xfer_handle, usbd_status status);
 208
 209 Static void             uhci_timeout(void *);
 210 Static void             uhci_timeout_task(void *);
 211 Static void             uhci_add_ls_ctrl(uhci_softc_t *, uhci_soft_qh_t *);
 212 Static void             uhci_add_hs_ctrl(uhci_softc_t *, uhci_soft_qh_t *);
 213 Static void             uhci_add_bulk(uhci_softc_t *, uhci_soft_qh_t *);
 214 Static void             uhci_remove_ls_ctrl(uhci_softc_t *,uhci_soft_qh_t *);
 215 Static void             uhci_remove_hs_ctrl(uhci_softc_t *,uhci_soft_qh_t *);
 216 Static void             uhci_remove_bulk(uhci_softc_t *,uhci_soft_qh_t *);
 217 Static int              uhci_str(usb_string_descriptor_t *, int, char *);
 218 Static void             uhci_add_loop(uhci_softc_t *sc);
 219 Static void             uhci_rem_loop(uhci_softc_t *sc);
 220
 221 Static usbd_status      uhci_setup_isoc(usbd_pipe_handle pipe);
 222 Static void             uhci_device_isoc_enter(usbd_xfer_handle);
 223
 224 Static usbd_status      uhci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t);
 225 Static void             uhci_freem(struct usbd_bus *, usb_dma_t *);
 226
 227 Static usbd_xfer_handle uhci_allocx(struct usbd_bus *);
 228 Static void             uhci_freex(struct usbd_bus *, usbd_xfer_handle);
 229
 230 Static usbd_status      uhci_device_ctrl_transfer(usbd_xfer_handle);
 231 Static usbd_status      uhci_device_ctrl_start(usbd_xfer_handle);
 232 Static void             uhci_device_ctrl_abort(usbd_xfer_handle);
 233 Static void             uhci_device_ctrl_close(usbd_pipe_handle);
 234 Static void             uhci_device_ctrl_done(usbd_xfer_handle);
 235
 236 Static usbd_status      uhci_device_intr_transfer(usbd_xfer_handle);
 237 Static usbd_status      uhci_device_intr_start(usbd_xfer_handle);
 238 Static void             uhci_device_intr_abort(usbd_xfer_handle);
 239 Static void             uhci_device_intr_close(usbd_pipe_handle);
 240 Static void             uhci_device_intr_done(usbd_xfer_handle);
 241
 242 Static usbd_status      uhci_device_bulk_transfer(usbd_xfer_handle);
 243 Static usbd_status      uhci_device_bulk_start(usbd_xfer_handle);
 244 Static void             uhci_device_bulk_abort(usbd_xfer_handle);
 245 Static void             uhci_device_bulk_close(usbd_pipe_handle);
 246 Static void             uhci_device_bulk_done(usbd_xfer_handle);
 247
 248 Static usbd_status      uhci_device_isoc_transfer(usbd_xfer_handle);
 249 Static usbd_status      uhci_device_isoc_start(usbd_xfer_handle);
 250 Static void             uhci_device_isoc_abort(usbd_xfer_handle);
 251 Static void             uhci_device_isoc_close(usbd_pipe_handle);
 252 Static void             uhci_device_isoc_done(usbd_xfer_handle);
 253
 254 Static usbd_status      uhci_root_ctrl_transfer(usbd_xfer_handle);
 255 Static usbd_status      uhci_root_ctrl_start(usbd_xfer_handle);
 256 Static void             uhci_root_ctrl_abort(usbd_xfer_handle);
 257 Static void             uhci_root_ctrl_close(usbd_pipe_handle);
 258 Static void             uhci_root_ctrl_done(usbd_xfer_handle);
 259
 260 Static usbd_status      uhci_root_intr_transfer(usbd_xfer_handle);
 261 Static usbd_status      uhci_root_intr_start(usbd_xfer_handle);
 262 Static void             uhci_root_intr_abort(usbd_xfer_handle);
 263 Static void             uhci_root_intr_close(usbd_pipe_handle);
 264 Static void             uhci_root_intr_done(usbd_xfer_handle);
 265
 266 Static usbd_status      uhci_open(usbd_pipe_handle);
 267 Static void             uhci_poll(struct usbd_bus *);
 268 Static void             uhci_softintr(void *);
 269
 270 Static usbd_status      uhci_device_request(usbd_xfer_handle xfer);
 271
 272 Static void             uhci_add_intr(uhci_softc_t *, uhci_soft_qh_t *);
 273 Static void             uhci_remove_intr(uhci_softc_t *, uhci_soft_qh_t *);
 274 Static usbd_status      uhci_device_setintr(uhci_softc_t *sc,
 275                             struct uhci_pipe *pipe, int ival);
 276
 277 Static void             uhci_device_clear_toggle(usbd_pipe_handle pipe);
 278 Static void             uhci_noop(usbd_pipe_handle pipe);
 279
 280 Static __inline uhci_soft_qh_t *uhci_find_prev_qh(uhci_soft_qh_t *,
 281                                                   uhci_soft_qh_t *);
 282
 283 #ifdef USB_DEBUG
 284 Static void             uhci_dump_all(uhci_softc_t *);
 285 Static void             uhci_dumpregs(uhci_softc_t *);
 286 Static void             uhci_dump_qhs(uhci_soft_qh_t *);
 287 Static void             uhci_dump_qh(uhci_soft_qh_t *);
 288 Static void             uhci_dump_tds(uhci_soft_td_t *);
 289 Static void             uhci_dump_td(uhci_soft_td_t *);
 290 Static void             uhci_dump_ii(uhci_intr_info_t *ii);
 291 void                    uhci_dump(void);
 292 #endif
 293
 294 #define UBARR(sc) bus_space_barrier((sc)->iot, (sc)->ioh, 0, (sc)->sc_size, \
 295                         BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
 296 #define UWRITE1(sc, r, x) \
 297  do { UBARR(sc); bus_space_write_1((sc)->iot, (sc)->ioh, (r), (x)); \
 298  } while (/*CONSTCOND*/0)
 299 #define UWRITE2(sc, r, x) \
 300  do { UBARR(sc); bus_space_write_2((sc)->iot, (sc)->ioh, (r), (x)); \
 301  } while (/*CONSTCOND*/0)
 302 #define UWRITE4(sc, r, x) \
 303  do { UBARR(sc); bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x)); \
 304  } while (/*CONSTCOND*/0)
 305 #define UREAD1(sc, r) (UBARR(sc), bus_space_read_1((sc)->iot, (sc)->ioh, (r)))
 306 #define UREAD2(sc, r) (UBARR(sc), bus_space_read_2((sc)->iot, (sc)->ioh, (r)))
 307 #define UREAD4(sc, r) (UBARR(sc), bus_space_read_4((sc)->iot, (sc)->ioh, (r)))
 308
 309 #define UHCICMD(sc, cmd) UWRITE2(sc, UHCI_CMD, cmd)
 310 #define UHCISTS(sc) UREAD2(sc, UHCI_STS)
 311
 312 #define UHCI_RESET_TIMEOUT 100  /* ms, reset timeout */
 313
 314 #define UHCI_CURFRAME(sc) (UREAD2(sc, UHCI_FRNUM) & UHCI_FRNUM_MASK)
 315
 316 #define UHCI_INTR_ENDPT 1
 317
 318 struct usbd_bus_methods uhci_bus_methods = {
 319         uhci_open,
 320         uhci_softintr,
 321         uhci_poll,
 322         uhci_allocm,
 323         uhci_freem,
 324         uhci_allocx,
 325         uhci_freex,
 326 };
 327
 328 struct usbd_pipe_methods uhci_root_ctrl_methods = {
 329         uhci_root_ctrl_transfer,
 330         uhci_root_ctrl_start,
 331         uhci_root_ctrl_abort,
 332         uhci_root_ctrl_close,
 333         uhci_noop,
 334         uhci_root_ctrl_done,
 335 };
 336
 337 struct usbd_pipe_methods uhci_root_intr_methods = {
 338         uhci_root_intr_transfer,
 339         uhci_root_intr_start,
 340         uhci_root_intr_abort,
 341         uhci_root_intr_close,
 342         uhci_noop,
 343         uhci_root_intr_done,
 344 };
 345
 346 struct usbd_pipe_methods uhci_device_ctrl_methods = {
 347         uhci_device_ctrl_transfer,
 348         uhci_device_ctrl_start,
 349         uhci_device_ctrl_abort,
 350         uhci_device_ctrl_close,
 351         uhci_noop,
 352         uhci_device_ctrl_done,
 353 };
 354
 355 struct usbd_pipe_methods uhci_device_intr_methods = {
 356         uhci_device_intr_transfer,
 357         uhci_device_intr_start,
 358         uhci_device_intr_abort,
 359         uhci_device_intr_close,
 360         uhci_device_clear_toggle,
 361         uhci_device_intr_done,
 362 };
 363
 364 struct usbd_pipe_methods uhci_device_bulk_methods = {
 365         uhci_device_bulk_transfer,
 366         uhci_device_bulk_start,
 367         uhci_device_bulk_abort,
 368         uhci_device_bulk_close,
 369         uhci_device_clear_toggle,
 370         uhci_device_bulk_done,
 371 };
 372
 373 struct usbd_pipe_methods uhci_device_isoc_methods = {
 374         uhci_device_isoc_transfer,
 375         uhci_device_isoc_start,
 376         uhci_device_isoc_abort,
 377         uhci_device_isoc_close,
 378         uhci_noop,
 379         uhci_device_isoc_done,
 380 };
 381
 382 #define uhci_add_intr_info(sc, ii) \
 383         LIST_INSERT_HEAD(&(sc)->sc_intrhead, (ii), list)
 384 #define uhci_del_intr_info(ii) \
 385         do { \
 386                 LIST_REMOVE((ii), list); \
 387                 (ii)->list.le_prev = NULL; \
 388         } while (0)
 389 #define uhci_active_intr_info(ii) ((ii)->list.le_prev != NULL)
 390
 391 Static __inline uhci_soft_qh_t *
 392 uhci_find_prev_qh(uhci_soft_qh_t *pqh, uhci_soft_qh_t *sqh)
 393 {
 394         DPRINTFN(15,("uhci_find_prev_qh: pqh=%p sqh=%p\n", pqh, sqh));
 395
 396         for (; pqh->hlink != sqh; pqh = pqh->hlink) {
 397 #if defined(DIAGNOSTIC) || defined(USB_DEBUG)
 398                 if (le32toh(pqh->qh.qh_hlink) & UHCI_PTR_T) {
 399                         kprintf("uhci_find_prev_qh: QH not found\n");
 400                         return (NULL);
 401                 }
 402 #endif
 403         }
 404         return (pqh);
 405 }
 406
 407 void
 408 uhci_globalreset(uhci_softc_t *sc)
 409 {
 410         UHCICMD(sc, UHCI_CMD_GRESET);   /* global reset */
 411         usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY); /* wait a little */
 412         UHCICMD(sc, 0);                 /* do nothing */
 413 }
 414
 415 usbd_status
 416 uhci_init(uhci_softc_t *sc)
 417 {
 418         usbd_status err;
 419         int i, j;
 420         uhci_soft_qh_t *clsqh, *chsqh, *bsqh, *sqh, *lsqh;
 421         uhci_soft_td_t *std;
 422
 423         DPRINTFN(1,("uhci_init: start\n"));
 424
 425 #ifdef USB_DEBUG
 426         thesc = sc;
 427
 428         if (uhcidebug > 2)
 429                 uhci_dumpregs(sc);
 430 #endif
 431
 432         UWRITE2(sc, UHCI_INTR, 0);              /* disable interrupts */
 433         uhci_globalreset(sc);                   /* reset the controller */
 434         uhci_reset(sc);
 435
 436         /* Allocate and initialize real frame array. */
 437         err = usb_allocmem(&sc->sc_bus,
 438                   UHCI_FRAMELIST_COUNT * sizeof(uhci_physaddr_t),
 439                   UHCI_FRAMELIST_ALIGN, &sc->sc_dma);
 440         if (err)
 441                 return (err);
 442         sc->sc_pframes = KERNADDR(&sc->sc_dma, 0);
 443         UWRITE2(sc, UHCI_FRNUM, 0);             /* set frame number to 0 */
 444         UWRITE4(sc, UHCI_FLBASEADDR, DMAADDR(&sc->sc_dma, 0)); /* set frame list*/
 445
 446         /*
 447          * Allocate a TD, inactive, that hangs from the last QH.
 448          * This is to avoid a bug in the PIIX that makes it run berserk
 449          * otherwise.
 450          */
 451         std = uhci_alloc_std(sc);
 452         if (std == NULL)
 453                 return (USBD_NOMEM);
 454         std->link.std = NULL;
 455         std->td.td_link = htole32(UHCI_PTR_T);
 456         std->td.td_status = htole32(0); /* inactive */
 457         std->td.td_token = htole32(0);
 458         std->td.td_buffer = htole32(0);
 459
 460         /* Allocate the dummy QH marking the end and used for looping the QHs.*/
 461         lsqh = uhci_alloc_sqh(sc);
 462         if (lsqh == NULL)
 463                 return (USBD_NOMEM);
 464         lsqh->hlink = NULL;
 465         lsqh->qh.qh_hlink = htole32(UHCI_PTR_T);        /* end of QH chain */
 466         lsqh->elink = std;
 467         lsqh->qh.qh_elink = htole32(std->physaddr | UHCI_PTR_TD);
 468         sc->sc_last_qh = lsqh;
 469
 470         /* Allocate the dummy QH where bulk traffic will be queued. */
 471         bsqh = uhci_alloc_sqh(sc);
 472         if (bsqh == NULL)
 473                 return (USBD_NOMEM);
 474         bsqh->hlink = lsqh;
 475         bsqh->qh.qh_hlink = htole32(lsqh->physaddr | UHCI_PTR_QH);
 476         bsqh->elink = NULL;
 477         bsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 478         sc->sc_bulk_start = sc->sc_bulk_end = bsqh;
 479
 480         /* Allocate dummy QH where high speed control traffic will be queued. */
 481         chsqh = uhci_alloc_sqh(sc);
 482         if (chsqh == NULL)
 483                 return (USBD_NOMEM);
 484         chsqh->hlink = bsqh;
 485         chsqh->qh.qh_hlink = htole32(bsqh->physaddr | UHCI_PTR_QH);
 486         chsqh->elink = NULL;
 487         chsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 488         sc->sc_hctl_start = sc->sc_hctl_end = chsqh;
 489
 490         /* Allocate dummy QH where control traffic will be queued. */
 491         clsqh = uhci_alloc_sqh(sc);
 492         if (clsqh == NULL)
 493                 return (USBD_NOMEM);
 494         clsqh->hlink = bsqh;
 495         clsqh->qh.qh_hlink = htole32(chsqh->physaddr | UHCI_PTR_QH);
 496         clsqh->elink = NULL;
 497         clsqh->qh.qh_elink = htole32(UHCI_PTR_T);
 498         sc->sc_lctl_start = sc->sc_lctl_end = clsqh;
 499
 500         /*
 501          * Make all (virtual) frame list pointers point to the interrupt
 502          * queue heads and the interrupt queue heads at the control
 503          * queue head and point the physical frame list to the virtual.
 504          */
 505         for(i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
 506                 std = uhci_alloc_std(sc);
 507                 sqh = uhci_alloc_sqh(sc);
 508                 if (std == NULL || sqh == NULL)
 509                         return (USBD_NOMEM);
 510                 std->link.sqh = sqh;
 511
 512                 std->td.td_link = htole32(sqh->physaddr | UHCI_PTR_QH);
 513                 std->td.td_status = htole32(UHCI_TD_IOS); /* iso, inactive */
 514                 std->td.td_token = htole32(0);
 515                 std->td.td_buffer = htole32(0);
 516                 sqh->hlink = clsqh;
 517                 sqh->qh.qh_hlink = htole32(clsqh->physaddr | UHCI_PTR_QH);
 518                 sqh->elink = NULL;
 519                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
 520                 sc->sc_vframes[i].htd = std;
 521                 sc->sc_vframes[i].etd = std;
 522                 sc->sc_vframes[i].hqh = sqh;
 523                 sc->sc_vframes[i].eqh = sqh;
 524                 for (j = i;
 525                      j < UHCI_FRAMELIST_COUNT;
 526                      j += UHCI_VFRAMELIST_COUNT) {
 527                         sc->sc_pframes[j] = htole32(std->physaddr);
 528                 }
 529         }
 530
 531         LIST_INIT(&sc->sc_intrhead);
 532
 533         SIMPLEQ_INIT(&sc->sc_free_xfers);
 534
 535         usb_callout_init(sc->sc_poll_handle);
 536
 537         /* Set up the bus struct. */
 538         sc->sc_bus.methods = &uhci_bus_methods;
 539         sc->sc_bus.pipe_size = sizeof(struct uhci_pipe);
 540
 541 #if defined(__NetBSD__) || defined(__OpenBSD__)
 542         sc->sc_suspend = PWR_RESUME;
 543         sc->sc_powerhook = powerhook_establish(uhci_power, sc);
 544         sc->sc_shutdownhook = shutdownhook_establish(uhci_shutdown, sc);
 545 #endif
 546         DPRINTFN(1,("uhci_init: enabling\n"));
 547         UWRITE2(sc, UHCI_INTR, UHCI_INTR_TOCRCIE | UHCI_INTR_RIE |
 548                 UHCI_INTR_IOCE | UHCI_INTR_SPIE);       /* enable interrupts */
 549
 550         UHCICMD(sc, UHCI_CMD_MAXP); /* Assume 64 byte packets at frame end */
 551
 552         return (uhci_run(sc, 1));               /* and here we go... */
 553 }
 554
 555 #if defined(__NetBSD__) || defined(__OpenBSD__)
 556 int
 557 uhci_activate(device_ptr_t self, enum devact act)
 558 {
 559         struct uhci_softc *sc = (struct uhci_softc *)self;
 560         int rv = 0;
 561
 562         switch (act) {
 563         case DVACT_ACTIVATE:
 564                 return (EOPNOTSUPP);
 565
 566         case DVACT_DEACTIVATE:
 567                 if (sc->sc_child != NULL)
 568                         rv = config_deactivate(sc->sc_child);
 569                 break;
 570         }
 571         return (rv);
 572 }
 573 #endif
 574
 575 int
 576 uhci_detach(struct uhci_softc *sc, int flags)
 577 {
 578         usbd_xfer_handle xfer;
 579         int rv = 0;
 580
 581 #if defined(__NetBSD__) || defined(__OpenBSD__)
 582         if (sc->sc_child != NULL)
 583                 rv = config_detach(sc->sc_child, flags);
 584
 585         if (rv != 0)
 586                 return (rv);
 587 #endif
 588
 589         UWRITE2(sc, UHCI_INTR, 0);              /* disable interrupts */
 590         uhci_run(sc, 0);
 591
 592 #if defined(__NetBSD__) || defined(__OpenBSD__)
 593         powerhook_disestablish(sc->sc_powerhook);
 594         shutdownhook_disestablish(sc->sc_shutdownhook);
 595 #endif
 596
 597         /* Free all xfers associated with this HC. */
 598         for (;;) {
 599                 xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers);
 600                 if (xfer == NULL)
 601                         break;
 602                 SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
 603                 kfree(xfer, M_USB);
 604         }
 605
 606         /* XXX free other data structures XXX */
 607         usb_freemem(&sc->sc_bus, &sc->sc_dma);
 608
 609         return (rv);
 610 }
 611
 612 usbd_status
 613 uhci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
 614 {
 615         return (usb_allocmem(bus, size, 0, dma));
 616 }
 617
 618 void
 619 uhci_freem(struct usbd_bus *bus, usb_dma_t *dma)
 620 {
 621         usb_freemem(bus, dma);
 622 }
 623
 624 usbd_xfer_handle
 625 uhci_allocx(struct usbd_bus *bus)
 626 {
 627         struct uhci_softc *sc = (struct uhci_softc *)bus;
 628         usbd_xfer_handle xfer;
 629
 630         xfer = SIMPLEQ_FIRST(&sc->sc_free_xfers);
 631         if (xfer != NULL) {
 632                 SIMPLEQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
 633 #ifdef DIAGNOSTIC
 634                 if (xfer->busy_free != XFER_FREE) {
 635                         kprintf("uhci_allocx: xfer=%p not free, 0x%08x\n", xfer,
 636                                xfer->busy_free);
 637                 }
 638 #endif
 639         } else {
 640                 xfer = kmalloc(sizeof(struct uhci_xfer), M_USB, M_INTWAIT);
 641         }
 642         if (xfer != NULL) {
 643                 memset(xfer, 0, sizeof (struct uhci_xfer));
 644                 UXFER(xfer)->iinfo.sc = sc;
 645                 usb_init_task(&UXFER(xfer)->abort_task, uhci_timeout_task,
 646                     xfer);
 647                 UXFER(xfer)->uhci_xfer_flags = 0;
 648 #ifdef DIAGNOSTIC
 649                 UXFER(xfer)->iinfo.isdone = 1;
 650                 xfer->busy_free = XFER_BUSY;
 651 #endif
 652         }
 653         return (xfer);
 654 }
 655
 656 void
 657 uhci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
 658 {
 659         struct uhci_softc *sc = (struct uhci_softc *)bus;
 660
 661 #ifdef DIAGNOSTIC
 662         if (xfer->busy_free != XFER_BUSY) {
 663                 kprintf("uhci_freex: xfer=%p not busy, 0x%08x\n", xfer,
 664                        xfer->busy_free);
 665                 return;
 666         }
 667         xfer->busy_free = XFER_FREE;
 668         if (!UXFER(xfer)->iinfo.isdone) {
 669                 kprintf("uhci_freex: !isdone\n");
 670                 return;
 671         }
 672 #endif
 673         SIMPLEQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
 674 }
 675
 676 /*
 677  * Shut down the controller when the system is going down.
 678  */
 679 void
 680 uhci_shutdown(void *v)
 681 {
 682         uhci_softc_t *sc = v;
 683
 684         DPRINTF(("uhci_shutdown: stopping the HC\n"));
 685         uhci_run(sc, 0); /* stop the controller */
 686 }
 687
 688 /*
 689  * Handle suspend/resume.
 690  *
 691  * We need to switch to polling mode here, because this routine is
 692  * called from an interrupt context.  This is all right since we
 693  * are almost suspended anyway.
 694  */
 695 void
 696 uhci_power(int why, void *v)
 697 {
 698         uhci_softc_t *sc = v;
 699         int cmd;
 700
 701         crit_enter();
 702         cmd = UREAD2(sc, UHCI_CMD);
 703
 704         DPRINTF(("uhci_power: sc=%p, why=%d (was %d), cmd=0x%x\n",
 705                  sc, why, sc->sc_suspend, cmd));
 706
 707         if (why != PWR_RESUME) {
 708 #ifdef USB_DEBUG
 709                 if (uhcidebug > 2)
 710                         uhci_dumpregs(sc);
 711 #endif
 712                 if (sc->sc_intr_xfer != NULL)
 713                         usb_uncallout(sc->sc_poll_handle, uhci_poll_hub,
 714                             sc->sc_intr_xfer);
 715                 sc->sc_bus.use_polling++;
 716                 uhci_run(sc, 0); /* stop the controller */
 717
 718                 /* save some state if BIOS doesn't */
 719                 sc->sc_saved_frnum = UREAD2(sc, UHCI_FRNUM);
 720                 sc->sc_saved_sof = UREAD1(sc, UHCI_SOF);
 721
 722                 UWRITE2(sc, UHCI_INTR, 0); /* disable intrs */
 723
 724                 UHCICMD(sc, cmd | UHCI_CMD_EGSM); /* enter global suspend */
 725                 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
 726                 sc->sc_suspend = why;
 727                 sc->sc_bus.use_polling--;
 728                 DPRINTF(("uhci_power: cmd=0x%x\n", UREAD2(sc, UHCI_CMD)));
 729         } else {
 730 #ifdef DIAGNOSTIC
 731                 if (sc->sc_suspend == PWR_RESUME)
 732                         kprintf("uhci_power: weird, resume without suspend.\n");
 733 #endif
 734                 sc->sc_bus.use_polling++;
 735                 sc->sc_suspend = why;
 736                 UWRITE2(sc, UHCI_INTR, 0);      /* disable interrupts */
 737                 uhci_globalreset(sc);           /* reset the controller */
 738                 uhci_reset(sc);
 739                 if (cmd & UHCI_CMD_RS)
 740                         uhci_run(sc, 0); /* in case BIOS has started it */
 741
 742                 uhci_globalreset(sc);
 743                 uhci_reset(sc);
 744
 745                 /* restore saved state */
 746                 UWRITE4(sc, UHCI_FLBASEADDR, DMAADDR(&sc->sc_dma, 0));
 747                 UWRITE2(sc, UHCI_FRNUM, sc->sc_saved_frnum);
 748                 UWRITE1(sc, UHCI_SOF, sc->sc_saved_sof);
 749
 750                 UHCICMD(sc, cmd | UHCI_CMD_FGR); /* force global resume */
 751                 usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
 752                 UHCICMD(sc, cmd & ~UHCI_CMD_EGSM); /* back to normal */
 753                 UWRITE2(sc, UHCI_INTR, UHCI_INTR_TOCRCIE | UHCI_INTR_RIE |
 754                         UHCI_INTR_IOCE | UHCI_INTR_SPIE); /* re-enable intrs */
 755                 UHCICMD(sc, UHCI_CMD_MAXP);
 756                 uhci_run(sc, 1); /* and start traffic again */
 757                 usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
 758                 sc->sc_bus.use_polling--;
 759                 if (sc->sc_intr_xfer != NULL)
 760                         usb_callout(sc->sc_poll_handle, sc->sc_ival,
 761                                     uhci_poll_hub, sc->sc_intr_xfer);
 762 #ifdef USB_DEBUG
 763                 if (uhcidebug > 2)
 764                         uhci_dumpregs(sc);
 765 #endif
 766         }
 767         crit_exit();
 768 }
 769
 770 #ifdef USB_DEBUG
 771 Static void
 772 uhci_dumpregs(uhci_softc_t *sc)
 773 {
 774         DPRINTFN(-1,("%s regs: cmd=%04x, sts=%04x, intr=%04x, frnum=%04x, "
 775                      "flbase=%08x, sof=%04x, portsc1=%04x, portsc2=%04x\n",
 776                      USBDEVNAME(sc->sc_bus.bdev),
 777                      UREAD2(sc, UHCI_CMD),
 778                      UREAD2(sc, UHCI_STS),
 779                      UREAD2(sc, UHCI_INTR),
 780                      UREAD2(sc, UHCI_FRNUM),
 781                      UREAD4(sc, UHCI_FLBASEADDR),
 782                      UREAD1(sc, UHCI_SOF),
 783                      UREAD2(sc, UHCI_PORTSC1),
 784                      UREAD2(sc, UHCI_PORTSC2)));
 785 }
 786
 787 void
 788 uhci_dump_td(uhci_soft_td_t *p)
 789 {
 790         char sbuf[128], sbuf2[128];
 791
 792         DPRINTFN(-1,("TD(%p) at %08lx = link=0x%08lx status=0x%08lx "
 793                      "token=0x%08lx buffer=0x%08lx\n",
 794                      p, (long)p->physaddr,
 795                      (long)le32toh(p->td.td_link),
 796                      (long)le32toh(p->td.td_status),
 797                      (long)le32toh(p->td.td_token),
 798                      (long)le32toh(p->td.td_buffer)));
 799
 800         bitmask_snprintf((u_int32_t)le32toh(p->td.td_link), "\20\1T\2Q\3VF",
 801                          sbuf, sizeof(sbuf));
 802         bitmask_snprintf((u_int32_t)le32toh(p->td.td_status),
 803                          "\20\22BITSTUFF\23CRCTO\24NAK\25BABBLE\26DBUFFER\27"
 804                          "STALLED\30ACTIVE\31IOC\32ISO\33LS\36SPD",
 805                          sbuf2, sizeof(sbuf2));
 806
 807         DPRINTFN(-1,("  %s %s,errcnt=%d,actlen=%d pid=%02x,addr=%d,endpt=%d,"
 808                      "D=%d,maxlen=%d\n", sbuf, sbuf2,
 809                      UHCI_TD_GET_ERRCNT(le32toh(p->td.td_status)),
 810                      UHCI_TD_GET_ACTLEN(le32toh(p->td.td_status)),
 811                      UHCI_TD_GET_PID(le32toh(p->td.td_token)),
 812                      UHCI_TD_GET_DEVADDR(le32toh(p->td.td_token)),
 813                      UHCI_TD_GET_ENDPT(le32toh(p->td.td_token)),
 814                      UHCI_TD_GET_DT(le32toh(p->td.td_token)),
 815                      UHCI_TD_GET_MAXLEN(le32toh(p->td.td_token))));
 816 }
 817
 818 void
 819 uhci_dump_qh(uhci_soft_qh_t *sqh)
 820 {
 821         DPRINTFN(-1,("QH(%p) at %08x: hlink=%08x elink=%08x\n", sqh,
 822                      (int)sqh->physaddr, le32toh(sqh->qh.qh_hlink),
 823                      le32toh(sqh->qh.qh_elink)));
 824 }
 825
 826 #if 1
 827 void
 828 uhci_dump(void)
 829 {
 830         uhci_dump_all(thesc);
 831 }
 832 #endif
 833
 834 void
 835 uhci_dump_all(uhci_softc_t *sc)
 836 {
 837         uhci_dumpregs(sc);
 838         kprintf("intrs=%d\n", sc->sc_bus.no_intrs);
 839         /*kprintf("framelist[i].link = %08x\n", sc->sc_framelist[0].link);*/
 840         uhci_dump_qh(sc->sc_lctl_start);
 841 }
 842
 843 void
 844 uhci_dump_qhs(uhci_soft_qh_t *sqh)
 845 {
 846         uhci_dump_qh(sqh);
 847
 848         /* uhci_dump_qhs displays all the QHs and TDs from the given QH onwards
 849          * Traverses sideways first, then down.
 850          *
 851          * QH1
 852          * QH2
 853          * No QH
 854          * TD2.1
 855          * TD2.2
 856          * TD1.1
 857          * etc.
 858          *
 859          * TD2.x being the TDs queued at QH2 and QH1 being referenced from QH1.
 860          */
 861
 862
 863         if (sqh->hlink != NULL && !(le32toh(sqh->qh.qh_hlink) & UHCI_PTR_T))
 864                 uhci_dump_qhs(sqh->hlink);
 865         else
 866                 DPRINTF(("No QH\n"));
 867
 868         if (sqh->elink != NULL && !(le32toh(sqh->qh.qh_elink) & UHCI_PTR_T))
 869                 uhci_dump_tds(sqh->elink);
 870         else
 871                 DPRINTF(("No TD\n"));
 872 }
 873
 874 void
 875 uhci_dump_tds(uhci_soft_td_t *std)
 876 {
 877         uhci_soft_td_t *td;
 878
 879         for(td = std; td != NULL; td = td->link.std) {
 880                 uhci_dump_td(td);
 881
 882                 /* Check whether the link pointer in this TD marks
 883                  * the link pointer as end of queue. This avoids
 884                  * printing the free list in case the queue/TD has
 885                  * already been moved there (seatbelt).
 886                  */
 887                 if (le32toh(td->td.td_link) & UHCI_PTR_T ||
 888                     le32toh(td->td.td_link) == 0)
 889                         break;
 890         }
 891 }
 892
 893 Static void
 894 uhci_dump_ii(uhci_intr_info_t *ii)
 895 {
 896         usbd_pipe_handle pipe;
 897         usb_endpoint_descriptor_t *ed;
 898         usbd_device_handle dev;
 899
 900 #ifdef DIAGNOSTIC
 901 #define DONE ii->isdone
 902 #else
 903 #define DONE 0
 904 #endif
 905         if (ii == NULL) {
 906                 kprintf("ii NULL\n");
 907                 return;
 908         }
 909         if (ii->xfer == NULL) {
 910                 kprintf("ii %p: done=%d xfer=NULL\n",
 911                        ii, DONE);
 912                 return;
 913         }
 914         pipe = ii->xfer->pipe;
 915         if (pipe == NULL) {
 916                 kprintf("ii %p: done=%d xfer=%p pipe=NULL\n",
 917                        ii, DONE, ii->xfer);
 918                 return;
 919         }
 920         if (pipe->endpoint == NULL) {
 921                 kprintf("ii %p: done=%d xfer=%p pipe=%p pipe->endpoint=NULL\n",
 922                        ii, DONE, ii->xfer, pipe);
 923                 return;
 924         }
 925         if (pipe->device == NULL) {
 926                 kprintf("ii %p: done=%d xfer=%p pipe=%p pipe->device=NULL\n",
 927                        ii, DONE, ii->xfer, pipe);
 928                 return;
 929         }
 930         ed = pipe->endpoint->edesc;
 931         dev = pipe->device;
 932         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",
 933                ii, DONE, ii->xfer, dev,
 934                UGETW(dev->ddesc.idVendor),
 935                UGETW(dev->ddesc.idProduct),
 936                dev->address, pipe,
 937                ed->bEndpointAddress, ed->bmAttributes);
 938 #undef DONE
 939 }
 940
 941 void uhci_dump_iis(struct uhci_softc *sc);
 942 void
 943 uhci_dump_iis(struct uhci_softc *sc)
 944 {
 945         uhci_intr_info_t *ii;
 946
 947         kprintf("intr_info list:\n");
 948         for (ii = LIST_FIRST(&sc->sc_intrhead); ii; ii = LIST_NEXT(ii, list))
 949                 uhci_dump_ii(ii);
 950 }
 951
 952 void iidump(void);
 953 void iidump(void) { uhci_dump_iis(thesc); }
 954
 955 #endif
 956
 957 /*
 958  * This routine is executed periodically and simulates interrupts
 959  * from the root controller interrupt pipe for port status change.
 960  */
 961 void
 962 uhci_poll_hub(void *addr)
 963 {
 964         usbd_xfer_handle xfer = addr;
 965         usbd_pipe_handle pipe = xfer->pipe;
 966         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
 967         u_char *p;
 968
 969         DPRINTFN(20, ("uhci_poll_hub\n"));
 970
 971         usb_callout(sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
 972
 973         p = KERNADDR(&xfer->dmabuf, 0);
 974         p[0] = 0;
 975         if (UREAD2(sc, UHCI_PORTSC1) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
 976                 p[0] |= 1<<1;
 977         if (UREAD2(sc, UHCI_PORTSC2) & (UHCI_PORTSC_CSC|UHCI_PORTSC_OCIC))
 978                 p[0] |= 1<<2;
 979         if (p[0] == 0)
 980                 /* No change, try again in a while */
 981                 return;
 982
 983         xfer->actlen = 1;
 984         xfer->status = USBD_NORMAL_COMPLETION;
 985         crit_enter();
 986         xfer->device->bus->intr_context++;
 987         usb_transfer_complete(xfer);
 988         xfer->device->bus->intr_context--;
 989         crit_exit();
 990 }
 991
 992 void
 993 uhci_root_intr_done(usbd_xfer_handle xfer)
 994 {
 995 }
 996
 997 void
 998 uhci_root_ctrl_done(usbd_xfer_handle xfer)
 999 {
1000 }
1001
1002 /*
1003  * Let the last QH loop back to the high speed control transfer QH.
1004  * This is what intel calls "bandwidth reclamation" and improves
1005  * USB performance a lot for some devices.
1006  * If we are already looping, just count it.
1007  */
1008 void
1009 uhci_add_loop(uhci_softc_t *sc) {
1010 #ifdef USB_DEBUG
1011         if (uhcinoloop)
1012                 return;
1013 #endif
1014         if (++sc->sc_loops == 1) {
1015                 DPRINTFN(5,("uhci_start_loop: add\n"));
1016                 /* Note, we don't loop back the soft pointer. */
1017                 sc->sc_last_qh->qh.qh_hlink =
1018                     htole32(sc->sc_hctl_start->physaddr | UHCI_PTR_QH);
1019         }
1020 }
1021
1022 void
1023 uhci_rem_loop(uhci_softc_t *sc) {
1024 #ifdef USB_DEBUG
1025         if (uhcinoloop)
1026                 return;
1027 #endif
1028         if (--sc->sc_loops == 0) {
1029                 DPRINTFN(5,("uhci_end_loop: remove\n"));
1030                 sc->sc_last_qh->qh.qh_hlink = htole32(UHCI_PTR_T);
1031         }
1032 }
1033
1034 /* Add high speed control QH, called from a critical section. */
1035 void
1036 uhci_add_hs_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1037 {
1038         uhci_soft_qh_t *eqh;
1039
1040         DPRINTFN(10, ("uhci_add_ctrl: sqh=%p\n", sqh));
1041         eqh = sc->sc_hctl_end;
1042         sqh->hlink       = eqh->hlink;
1043         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
1044         eqh->hlink       = sqh;
1045         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
1046         sc->sc_hctl_end = sqh;
1047 #ifdef UHCI_CTL_LOOP
1048         uhci_add_loop(sc);
1049 #endif
1050 }
1051
1052 /* Remove high speed control QH, called from a critical section. */
1053 void
1054 uhci_remove_hs_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1055 {
1056         uhci_soft_qh_t *pqh;
1057
1058         DPRINTFN(10, ("uhci_remove_hs_ctrl: sqh=%p\n", sqh));
1059 #ifdef UHCI_CTL_LOOP
1060         uhci_rem_loop(sc);
1061 #endif
1062         /*
1063          * The T bit should be set in the elink of the QH so that the HC
1064          * doesn't follow the pointer.  This condition may fail if the
1065          * the transferred packet was short so that the QH still points
1066          * at the last used TD.
1067          * In this case we set the T bit and wait a little for the HC
1068          * to stop looking at the TD.
1069          */
1070         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
1071                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
1072                 delay(UHCI_QH_REMOVE_DELAY);
1073         }
1074
1075         pqh = uhci_find_prev_qh(sc->sc_hctl_start, sqh);
1076         pqh->hlink = sqh->hlink;
1077         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1078         delay(UHCI_QH_REMOVE_DELAY);
1079         if (sc->sc_hctl_end == sqh)
1080                 sc->sc_hctl_end = pqh;
1081 }
1082
1083 /* Add low speed control QH, called from a critical section. */
1084 void
1085 uhci_add_ls_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1086 {
1087         uhci_soft_qh_t *eqh;
1088
1089         DPRINTFN(10, ("uhci_add_ls_ctrl: sqh=%p\n", sqh));
1090         eqh = sc->sc_lctl_end;
1091         sqh->hlink = eqh->hlink;
1092         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
1093         eqh->hlink = sqh;
1094         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
1095         sc->sc_lctl_end = sqh;
1096 }
1097
1098 /* Remove low speed control QH, called from a critical section. */
1099 void
1100 uhci_remove_ls_ctrl(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1101 {
1102         uhci_soft_qh_t *pqh;
1103
1104         DPRINTFN(10, ("uhci_remove_ls_ctrl: sqh=%p\n", sqh));
1105         /* See comment in uhci_remove_hs_ctrl() */
1106         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
1107                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
1108                 delay(UHCI_QH_REMOVE_DELAY);
1109         }
1110         pqh = uhci_find_prev_qh(sc->sc_lctl_start, sqh);
1111         pqh->hlink = sqh->hlink;
1112         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1113         delay(UHCI_QH_REMOVE_DELAY);
1114         if (sc->sc_lctl_end == sqh)
1115                 sc->sc_lctl_end = pqh;
1116 }
1117
1118 /* Add bulk QH, called from a critical section. */
1119 void
1120 uhci_add_bulk(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1121 {
1122         uhci_soft_qh_t *eqh;
1123
1124         DPRINTFN(10, ("uhci_add_bulk: sqh=%p\n", sqh));
1125         eqh = sc->sc_bulk_end;
1126         sqh->hlink = eqh->hlink;
1127         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
1128         eqh->hlink = sqh;
1129         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
1130         sc->sc_bulk_end = sqh;
1131         uhci_add_loop(sc);
1132 }
1133
1134 /* Remove bulk QH, called from a critical section. */
1135 void
1136 uhci_remove_bulk(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1137 {
1138         uhci_soft_qh_t *pqh;
1139
1140         DPRINTFN(10, ("uhci_remove_bulk: sqh=%p\n", sqh));
1141         uhci_rem_loop(sc);
1142         /* See comment in uhci_remove_hs_ctrl() */
1143         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
1144                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
1145                 delay(UHCI_QH_REMOVE_DELAY);
1146         }
1147         pqh = uhci_find_prev_qh(sc->sc_bulk_start, sqh);
1148         pqh->hlink       = sqh->hlink;
1149         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
1150         delay(UHCI_QH_REMOVE_DELAY);
1151         if (sc->sc_bulk_end == sqh)
1152                 sc->sc_bulk_end = pqh;
1153 }
1154
1155 Static int uhci_intr1(uhci_softc_t *);
1156
1157 int
1158 uhci_intr(void *arg)
1159 {
1160         uhci_softc_t *sc = arg;
1161
1162         if (sc->sc_dying || (sc->sc_flags & UHCI_SCFLG_DONEINIT) == 0)
1163                 return (0);
1164
1165         DPRINTFN(15,("uhci_intr: real interrupt\n"));
1166         if (sc->sc_bus.use_polling) {
1167 #ifdef DIAGNOSTIC
1168                 DPRINTFN(16, ("uhci_intr: ignored interrupt while polling\n"));
1169 #endif
1170                 return (0);
1171         }
1172
1173         return (uhci_intr1(sc));
1174 }
1175
1176 int
1177 uhci_intr1(uhci_softc_t *sc)
1178 {
1179
1180         int status;
1181         int ack;
1182
1183         /*
1184          * It can happen that an interrupt will be delivered to
1185          * us before the device has been fully attached and the
1186          * softc struct has been configured. Usually this happens
1187          * when kldloading the USB support as a module after the
1188          * system has been booted. If we detect this condition,
1189          * we need to squelch the unwanted interrupts until we're
1190          * ready for them.
1191          */
1192         if (sc->sc_bus.bdev == NULL) {
1193                 UWRITE2(sc, UHCI_STS, 0xFFFF);  /* ack pending interrupts */
1194                 uhci_run(sc, 0);                /* stop the controller */
1195                 UWRITE2(sc, UHCI_INTR, 0);      /* disable interrupts */
1196                 return(0);
1197         }
1198
1199 #ifdef USB_DEBUG
1200         if (uhcidebug > 15) {
1201                 DPRINTF(("%s: uhci_intr1\n", USBDEVNAME(sc->sc_bus.bdev)));
1202                 uhci_dumpregs(sc);
1203         }
1204 #endif
1205         status = UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS;
1206         if (status == 0)        /* The interrupt was not for us. */
1207                 return (0);
1208
1209 #if defined(DIAGNOSTIC) && defined(__NetBSD__)
1210         if (sc->sc_suspend != PWR_RESUME)
1211                 kprintf("uhci_intr: suspended sts=0x%x\n", status);
1212 #endif
1213
1214         if (sc->sc_suspend != PWR_RESUME) {
1215                 kprintf("%s: interrupt while not operating ignored\n",
1216                        USBDEVNAME(sc->sc_bus.bdev));
1217                 UWRITE2(sc, UHCI_STS, status); /* acknowledge the ints */
1218                 return (0);
1219         }
1220
1221         ack = 0;
1222         if (status & UHCI_STS_USBINT)
1223                 ack |= UHCI_STS_USBINT;
1224         if (status & UHCI_STS_USBEI)
1225                 ack |= UHCI_STS_USBEI;
1226         if (status & UHCI_STS_RD) {
1227                 ack |= UHCI_STS_RD;
1228 #ifdef USB_DEBUG
1229                 kprintf("%s: resume detect\n", USBDEVNAME(sc->sc_bus.bdev));
1230 #endif
1231         }
1232         if (status & UHCI_STS_HSE) {
1233                 ack |= UHCI_STS_HSE;
1234                 kprintf("%s: host system error\n", USBDEVNAME(sc->sc_bus.bdev));
1235         }
1236         if (status & UHCI_STS_HCPE) {
1237                 ack |= UHCI_STS_HCPE;
1238                 kprintf("%s: host controller process error\n",
1239                        USBDEVNAME(sc->sc_bus.bdev));
1240         }
1241         if (status & UHCI_STS_HCH) {
1242                 /* no acknowledge needed */
1243                 if (!sc->sc_dying) {
1244                         kprintf("%s: host controller halted\n",
1245                             USBDEVNAME(sc->sc_bus.bdev));
1246 #ifdef USB_DEBUG
1247                         uhci_dump_all(sc);
1248 #endif
1249                 }
1250                 sc->sc_dying = 1;
1251         }
1252
1253         if (!ack)
1254                 return (0);     /* nothing to acknowledge */
1255         UWRITE2(sc, UHCI_STS, ack); /* acknowledge the ints */
1256
1257         sc->sc_bus.no_intrs++;
1258         usb_schedsoftintr(&sc->sc_bus);
1259
1260         DPRINTFN(15, ("%s: uhci_intr: exit\n", USBDEVNAME(sc->sc_bus.bdev)));
1261
1262         return (1);
1263 }
1264
1265 void
1266 uhci_softintr(void *v)
1267 {
1268         uhci_softc_t *sc = v;
1269         uhci_intr_info_t *ii, *nextii;
1270
1271         DPRINTFN(10,("%s: uhci_softintr (%d)\n", USBDEVNAME(sc->sc_bus.bdev),
1272                      sc->sc_bus.intr_context));
1273
1274         sc->sc_bus.intr_context++;
1275
1276         /*
1277          * Interrupts on UHCI really suck.  When the host controller
1278          * interrupts because a transfer is completed there is no
1279          * way of knowing which transfer it was.  You can scan down
1280          * the TDs and QHs of the previous frame to limit the search,
1281          * but that assumes that the interrupt was not delayed by more
1282          * than 1 ms, which may not always be true (e.g. after debug
1283          * output on a slow console).
1284          * We scan all interrupt descriptors to see if any have
1285          * completed.
1286          */
1287         LIST_FOREACH_MUTABLE(ii, &sc->sc_intrhead, list, nextii)
1288                 uhci_check_intr(sc, ii);
1289
1290 #ifdef USB_USE_SOFTINTR
1291         if (sc->sc_softwake) {
1292                 sc->sc_softwake = 0;
1293                 wakeup(&sc->sc_softwake);
1294         }
1295 #endif /* USB_USE_SOFTINTR */
1296
1297         sc->sc_bus.intr_context--;
1298 }
1299
1300 /* Check for an interrupt. */
1301 void
1302 uhci_check_intr(uhci_softc_t *sc, uhci_intr_info_t *ii)
1303 {
1304         uhci_soft_td_t *std, *lstd;
1305         u_int32_t status;
1306
1307         DPRINTFN(15, ("uhci_check_intr: ii=%p\n", ii));
1308 #ifdef DIAGNOSTIC
1309         if (ii == NULL) {
1310                 kprintf("uhci_check_intr: no ii? %p\n", ii);
1311                 return;
1312         }
1313 #endif
1314         if (ii->xfer->status == USBD_CANCELLED ||
1315             ii->xfer->status == USBD_TIMEOUT) {
1316                 DPRINTF(("uhci_check_intr: aborted xfer=%p\n", ii->xfer));
1317                 return;
1318         }
1319
1320         if (ii->stdstart == NULL)
1321                 return;
1322         lstd = ii->stdend;
1323 #ifdef DIAGNOSTIC
1324         if (lstd == NULL) {
1325                 kprintf("uhci_check_intr: std==0\n");
1326                 return;
1327         }
1328 #endif
1329         /*
1330          * If the last TD is still active we need to check whether there
1331          * is an error somewhere in the middle, or whether there was a
1332          * short packet (SPD and not ACTIVE).
1333          */
1334         if (le32toh(lstd->td.td_status) & UHCI_TD_ACTIVE) {
1335                 DPRINTFN(12, ("uhci_check_intr: active ii=%p\n", ii));
1336                 for (std = ii->stdstart; std != lstd; std = std->link.std) {
1337                         status = le32toh(std->td.td_status);
1338                         /* If there's an active TD the xfer isn't done. */
1339                         if (status & UHCI_TD_ACTIVE)
1340                                 break;
1341                         /* Any kind of error makes the xfer done. */
1342                         if (status & UHCI_TD_STALLED)
1343                                 goto done;
1344                         /* We want short packets, and it is short: it's done */
1345                         if ((status & UHCI_TD_SPD) &&
1346                             UHCI_TD_GET_ACTLEN(status) <
1347                             UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token))) {
1348                                 goto done;
1349                         }
1350                 }
1351                 DPRINTFN(12, ("uhci_check_intr: ii=%p std=%p still active\n",
1352                               ii, ii->stdstart));
1353                 return;
1354         }
1355 done:
1356         DPRINTFN(12, ("uhci_check_intr: ii=%p done\n", ii));
1357         usb_uncallout(ii->xfer->timeout_handle, uhci_timeout, ii);
1358         usb_rem_task(ii->xfer->pipe->device, &UXFER(ii->xfer)->abort_task);
1359         uhci_idone(ii);
1360 }
1361
1362 /* Called from a critical section. */
1363 void
1364 uhci_idone(uhci_intr_info_t *ii)
1365 {
1366         usbd_xfer_handle xfer = ii->xfer;
1367         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1368         uhci_soft_td_t *std;
1369         u_int32_t status = 0, nstatus;
1370         int actlen;
1371
1372         DPRINTFN(12, ("uhci_idone: ii=%p\n", ii));
1373 #ifdef DIAGNOSTIC
1374         {
1375                 crit_enter();
1376                 if (ii->isdone) {
1377                         crit_exit();
1378 #ifdef USB_DEBUG
1379                         kprintf("uhci_idone: ii is done!\n   ");
1380                         uhci_dump_ii(ii);
1381 #else
1382                         kprintf("uhci_idone: ii=%p is done!\n", ii);
1383 #endif
1384                         return;
1385                 }
1386                 ii->isdone = 1;
1387                 crit_exit();
1388         }
1389 #endif
1390
1391         if (xfer->nframes != 0) {
1392                 /* Isoc transfer, do things differently. */
1393                 uhci_soft_td_t **stds = upipe->u.iso.stds;
1394                 int i, n, nframes, len;
1395
1396                 DPRINTFN(5,("uhci_idone: ii=%p isoc ready\n", ii));
1397
1398                 nframes = xfer->nframes;
1399                 actlen = 0;
1400                 n = UXFER(xfer)->curframe;
1401                 for (i = 0; i < nframes; i++) {
1402                         std = stds[n];
1403 #ifdef USB_DEBUG
1404                         if (uhcidebug > 5) {
1405                                 DPRINTFN(-1,("uhci_idone: isoc TD %d\n", i));
1406                                 uhci_dump_td(std);
1407                         }
1408 #endif
1409                         if (++n >= UHCI_VFRAMELIST_COUNT)
1410                                 n = 0;
1411                         status = le32toh(std->td.td_status);
1412                         len = UHCI_TD_GET_ACTLEN(status);
1413                         xfer->frlengths[i] = len;
1414                         actlen += len;
1415                 }
1416                 upipe->u.iso.inuse -= nframes;
1417                 xfer->actlen = actlen;
1418                 xfer->status = USBD_NORMAL_COMPLETION;
1419                 goto end;
1420         }
1421
1422 #ifdef USB_DEBUG
1423         DPRINTFN(10, ("uhci_idone: ii=%p, xfer=%p, pipe=%p ready\n",
1424                       ii, xfer, upipe));
1425         if (uhcidebug > 10)
1426                 uhci_dump_tds(ii->stdstart);
1427 #endif
1428
1429         /* The transfer is done, compute actual length and status. */
1430         actlen = 0;
1431         for (std = ii->stdstart; std != NULL; std = std->link.std) {
1432                 nstatus = le32toh(std->td.td_status);
1433                 if (nstatus & UHCI_TD_ACTIVE)
1434                         break;
1435
1436                 status = nstatus;
1437                 if (UHCI_TD_GET_PID(le32toh(std->td.td_token)) !=
1438                     UHCI_TD_PID_SETUP) {
1439                         actlen += UHCI_TD_GET_ACTLEN(status);
1440                 } else {
1441                         /*
1442                          * UHCI will report CRCTO in addition to a STALL or NAK
1443                          * for a SETUP transaction.  See section 3.2.2, "TD
1444                          * CONTROL AND STATUS".
1445                          */
1446                         if (status & (UHCI_TD_STALLED | UHCI_TD_NAK))
1447                                 status &= ~UHCI_TD_CRCTO;
1448                 }
1449
1450         }
1451         /* If there are left over TDs we need to update the toggle. */
1452         if (std != NULL)
1453                 upipe->nexttoggle = UHCI_TD_GET_DT(le32toh(std->td.td_token));
1454
1455         status &= UHCI_TD_ERROR;
1456         DPRINTFN(10, ("uhci_idone: actlen=%d, status=0x%x\n",
1457                       actlen, status));
1458         xfer->actlen = actlen;
1459         if (status != 0) {
1460 #ifdef USB_DEBUG
1461                 char sbuf[128];
1462
1463                 bitmask_snprintf((u_int32_t)status,
1464                                  "\20\22BITSTUFF\23CRCTO\24NAK\25"
1465                                  "BABBLE\26DBUFFER\27STALLED\30ACTIVE",
1466                                  sbuf, sizeof(sbuf));
1467
1468                 DPRINTFN((status == UHCI_TD_STALLED)*10,
1469                          ("uhci_idone: error, addr=%d, endpt=0x%02x, "
1470                           "status 0x%s\n",
1471                           xfer->pipe->device->address,
1472                           xfer->pipe->endpoint->edesc->bEndpointAddress,
1473                           sbuf));
1474 #endif
1475                 if (status == UHCI_TD_STALLED)
1476                         xfer->status = USBD_STALLED;
1477                 else
1478                         xfer->status = USBD_IOERROR; /* more info XXX */
1479         } else {
1480                 xfer->status = USBD_NORMAL_COMPLETION;
1481         }
1482
1483  end:
1484         usb_transfer_complete(xfer);
1485         DPRINTFN(12, ("uhci_idone: ii=%p done\n", ii));
1486 }
1487
1488 /*
1489  * Called when a request does not complete.
1490  */
1491 void
1492 uhci_timeout(void *addr)
1493 {
1494         uhci_intr_info_t *ii = addr;
1495         struct uhci_xfer *uxfer = UXFER(ii->xfer);
1496         struct uhci_pipe *upipe = (struct uhci_pipe *)uxfer->xfer.pipe;
1497         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1498
1499         DPRINTF(("uhci_timeout: uxfer=%p\n", uxfer));
1500
1501         if (sc->sc_dying) {
1502                 uhci_abort_xfer(&uxfer->xfer, USBD_TIMEOUT);
1503                 return;
1504         }
1505
1506         /* Execute the abort in a process context. */
1507         usb_add_task(uxfer->xfer.pipe->device, &uxfer->abort_task,
1508                      USB_TASKQ_HC);
1509 }
1510
1511 void
1512 uhci_timeout_task(void *addr)
1513 {
1514         usbd_xfer_handle xfer = addr;
1515
1516         DPRINTF(("uhci_timeout_task: xfer=%p\n", xfer));
1517
1518         crit_enter();
1519         uhci_abort_xfer(xfer, USBD_TIMEOUT);
1520         crit_exit();
1521 }
1522
1523 /*
1524  * Wait here until controller claims to have an interrupt.
1525  * Then call uhci_intr and return.  Use timeout to avoid waiting
1526  * too long.
1527  * Only used during boot when interrupts are not enabled yet.
1528  */
1529 void
1530 uhci_waitintr(uhci_softc_t *sc, usbd_xfer_handle xfer)
1531 {
1532         int timo = xfer->timeout;
1533         uhci_intr_info_t *ii;
1534
1535         DPRINTFN(10,("uhci_waitintr: timeout = %dms\n", timo));
1536
1537         xfer->status = USBD_IN_PROGRESS;
1538         for (; timo >= 0; timo--) {
1539                 usb_delay_ms(&sc->sc_bus, 1);
1540                 DPRINTFN(20,("uhci_waitintr: 0x%04x\n", UREAD2(sc, UHCI_STS)));
1541                 if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1542                         uhci_intr1(sc);
1543                 if (xfer->status != USBD_IN_PROGRESS)
1544                         return;
1545         }
1546
1547         /* Timeout */
1548         DPRINTF(("uhci_waitintr: timeout\n"));
1549         for (ii = LIST_FIRST(&sc->sc_intrhead);
1550              ii != NULL && ii->xfer != xfer;
1551              ii = LIST_NEXT(ii, list))
1552                 ;
1553 #ifdef DIAGNOSTIC
1554         if (ii == NULL)
1555                 panic("uhci_waitintr: lost intr_info");
1556 #endif
1557         uhci_idone(ii);
1558 }
1559
1560 void
1561 uhci_poll(struct usbd_bus *bus)
1562 {
1563         uhci_softc_t *sc = (uhci_softc_t *)bus;
1564
1565         if (UREAD2(sc, UHCI_STS) & UHCI_STS_ALLINTRS)
1566                 uhci_intr1(sc);
1567 }
1568
1569 void
1570 uhci_reset(uhci_softc_t *sc)
1571 {
1572         int n;
1573
1574         UHCICMD(sc, UHCI_CMD_HCRESET);
1575         /* The reset bit goes low when the controller is done. */
1576         for (n = 0; n < UHCI_RESET_TIMEOUT &&
1577                     (UREAD2(sc, UHCI_CMD) & UHCI_CMD_HCRESET); n++)
1578                 usb_delay_ms(&sc->sc_bus, 1);
1579         if (n >= UHCI_RESET_TIMEOUT)
1580                 kprintf("%s: controller did not reset\n",
1581                        USBDEVNAME(sc->sc_bus.bdev));
1582 }
1583
1584 usbd_status
1585 uhci_run(uhci_softc_t *sc, int run)
1586 {
1587         int n, running;
1588         u_int16_t cmd;
1589
1590         run = run != 0;
1591         crit_enter();
1592         DPRINTF(("uhci_run: setting run=%d\n", run));
1593         cmd = UREAD2(sc, UHCI_CMD);
1594         if (run)
1595                 cmd |= UHCI_CMD_RS;
1596         else
1597                 cmd &= ~UHCI_CMD_RS;
1598         UHCICMD(sc, cmd);
1599         for(n = 0; n < 10; n++) {
1600                 running = !(UREAD2(sc, UHCI_STS) & UHCI_STS_HCH);
1601                 /* return when we've entered the state we want */
1602                 if (run == running) {
1603                         crit_exit();
1604                         DPRINTF(("uhci_run: done cmd=0x%x sts=0x%x\n",
1605                                  UREAD2(sc, UHCI_CMD), UREAD2(sc, UHCI_STS)));
1606                         return (USBD_NORMAL_COMPLETION);
1607                 }
1608                 usb_delay_ms(&sc->sc_bus, 1);
1609         }
1610         crit_exit();
1611         kprintf("%s: cannot %s\n", USBDEVNAME(sc->sc_bus.bdev),
1612                run ? "start" : "stop");
1613         return (USBD_IOERROR);
1614 }
1615
1616 /*
1617  * Memory management routines.
1618  *  uhci_alloc_std allocates TDs
1619  *  uhci_alloc_sqh allocates QHs
1620  * These two routines do their own free list management,
1621  * partly for speed, partly because allocating DMAable memory
1622  * has page size granularaity so much memory would be wasted if
1623  * only one TD/QH (32 bytes) was placed in each allocated chunk.
1624  */
1625
1626 uhci_soft_td_t *
1627 uhci_alloc_std(uhci_softc_t *sc)
1628 {
1629         uhci_soft_td_t *std;
1630         usbd_status err;
1631         int i, offs;
1632         usb_dma_t dma;
1633
1634         if (sc->sc_freetds == NULL) {
1635                 DPRINTFN(2,("uhci_alloc_std: allocating chunk\n"));
1636                 err = usb_allocmem(&sc->sc_bus, UHCI_STD_SIZE * UHCI_STD_CHUNK,
1637                           UHCI_TD_ALIGN, &dma);
1638                 if (err)
1639                         return (0);
1640                 for(i = 0; i < UHCI_STD_CHUNK; i++) {
1641                         offs = i * UHCI_STD_SIZE;
1642                         std = KERNADDR(&dma, offs);
1643                         std->physaddr = DMAADDR(&dma, offs);
1644                         std->link.std = sc->sc_freetds;
1645                         sc->sc_freetds = std;
1646                 }
1647         }
1648         std = sc->sc_freetds;
1649         sc->sc_freetds = std->link.std;
1650         memset(&std->td, 0, sizeof(uhci_td_t));
1651         return std;
1652 }
1653
1654 void
1655 uhci_free_std(uhci_softc_t *sc, uhci_soft_td_t *std)
1656 {
1657 #ifdef DIAGNOSTIC
1658 #define TD_IS_FREE 0x12345678
1659         if (le32toh(std->td.td_token) == TD_IS_FREE) {
1660                 kprintf("uhci_free_std: freeing free TD %p\n", std);
1661                 return;
1662         }
1663         std->td.td_token = htole32(TD_IS_FREE);
1664 #endif
1665         std->link.std = sc->sc_freetds;
1666         sc->sc_freetds = std;
1667 }
1668
1669 uhci_soft_qh_t *
1670 uhci_alloc_sqh(uhci_softc_t *sc)
1671 {
1672         uhci_soft_qh_t *sqh;
1673         usbd_status err;
1674         int i, offs;
1675         usb_dma_t dma;
1676
1677         if (sc->sc_freeqhs == NULL) {
1678                 DPRINTFN(2, ("uhci_alloc_sqh: allocating chunk\n"));
1679                 err = usb_allocmem(&sc->sc_bus, UHCI_SQH_SIZE * UHCI_SQH_CHUNK,
1680                           UHCI_QH_ALIGN, &dma);
1681                 if (err)
1682                         return (0);
1683                 for(i = 0; i < UHCI_SQH_CHUNK; i++) {
1684                         offs = i * UHCI_SQH_SIZE;
1685                         sqh = KERNADDR(&dma, offs);
1686                         sqh->physaddr = DMAADDR(&dma, offs);
1687                         sqh->hlink = sc->sc_freeqhs;
1688                         sc->sc_freeqhs = sqh;
1689                 }
1690         }
1691         sqh = sc->sc_freeqhs;
1692         sc->sc_freeqhs = sqh->hlink;
1693         memset(&sqh->qh, 0, sizeof(uhci_qh_t));
1694         return (sqh);
1695 }
1696
1697 void
1698 uhci_free_sqh(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
1699 {
1700         sqh->hlink = sc->sc_freeqhs;
1701         sc->sc_freeqhs = sqh;
1702 }
1703
1704 void
1705 uhci_free_std_chain(uhci_softc_t *sc, uhci_soft_td_t *std,
1706                     uhci_soft_td_t *stdend)
1707 {
1708         uhci_soft_td_t *p;
1709
1710         for (; std != stdend; std = p) {
1711                 p = std->link.std;
1712                 uhci_free_std(sc, std);
1713         }
1714 }
1715
1716 usbd_status
1717 uhci_alloc_std_chain(struct uhci_pipe *upipe, uhci_softc_t *sc, int len,
1718                      int rd, u_int16_t flags, usb_dma_t *dma,
1719                      uhci_soft_td_t **sp, uhci_soft_td_t **ep)
1720 {
1721         uhci_soft_td_t *p, *lastp;
1722         uhci_physaddr_t lastlink;
1723         int i, ntd, l, tog, maxp;
1724         u_int32_t status;
1725         int addr = upipe->pipe.device->address;
1726         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1727
1728         DPRINTFN(8, ("uhci_alloc_std_chain: addr=%d endpt=%d len=%d speed=%d "
1729                      "flags=0x%x\n", addr, UE_GET_ADDR(endpt), len,
1730                      upipe->pipe.device->speed, flags));
1731         maxp = UGETW(upipe->pipe.endpoint->edesc->wMaxPacketSize);
1732         if (maxp == 0) {
1733                 kprintf("uhci_alloc_std_chain: maxp=0\n");
1734                 return (USBD_INVAL);
1735         }
1736         ntd = (len + maxp - 1) / maxp;
1737         if ((flags & USBD_FORCE_SHORT_XFER) && len % maxp == 0)
1738                 ntd++;
1739         DPRINTFN(10, ("uhci_alloc_std_chain: maxp=%d ntd=%d\n", maxp, ntd));
1740         if (ntd == 0) {
1741                 *sp = *ep = 0;
1742                 DPRINTFN(-1,("uhci_alloc_std_chain: ntd=0\n"));
1743                 return (USBD_NORMAL_COMPLETION);
1744         }
1745         tog = upipe->nexttoggle;
1746         if (ntd % 2 == 0)
1747                 tog ^= 1;
1748         upipe->nexttoggle = tog ^ 1;
1749         lastp = NULL;
1750         lastlink = UHCI_PTR_T;
1751         ntd--;
1752         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(3) | UHCI_TD_ACTIVE);
1753         if (upipe->pipe.device->speed == USB_SPEED_LOW)
1754                 status |= UHCI_TD_LS;
1755         if (flags & USBD_SHORT_XFER_OK)
1756                 status |= UHCI_TD_SPD;
1757         for (i = ntd; i >= 0; i--) {
1758                 p = uhci_alloc_std(sc);
1759                 if (p == NULL) {
1760                         uhci_free_std_chain(sc, lastp, NULL);
1761                         return (USBD_NOMEM);
1762                 }
1763                 p->link.std = lastp;
1764                 p->td.td_link = htole32(lastlink | UHCI_PTR_VF | UHCI_PTR_TD);
1765                 lastp = p;
1766                 lastlink = p->physaddr;
1767                 p->td.td_status = htole32(status);
1768                 if (i == ntd) {
1769                         /* last TD */
1770                         l = len % maxp;
1771                         if (l == 0 && !(flags & USBD_FORCE_SHORT_XFER))
1772                                 l = maxp;
1773                         *ep = p;
1774                 } else
1775                         l = maxp;
1776                 p->td.td_token =
1777                         htole32(rd ? UHCI_TD_IN (l, endpt, addr, tog) :
1778                                      UHCI_TD_OUT(l, endpt, addr, tog));
1779                 p->td.td_buffer = htole32(DMAADDR(dma, i * maxp));
1780                 tog ^= 1;
1781         }
1782         *sp = lastp;
1783         DPRINTFN(10, ("uhci_alloc_std_chain: nexttog=%d\n",
1784                       upipe->nexttoggle));
1785         return (USBD_NORMAL_COMPLETION);
1786 }
1787
1788 void
1789 uhci_device_clear_toggle(usbd_pipe_handle pipe)
1790 {
1791         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
1792         upipe->nexttoggle = 0;
1793 }
1794
1795 void
1796 uhci_noop(usbd_pipe_handle pipe)
1797 {
1798 }
1799
1800 usbd_status
1801 uhci_device_bulk_transfer(usbd_xfer_handle xfer)
1802 {
1803         usbd_status err;
1804
1805         /* Insert last in queue. */
1806         err = usb_insert_transfer(xfer);
1807         if (err)
1808                 return (err);
1809
1810         /*
1811          * Pipe isn't running (otherwise err would be USBD_INPROG),
1812          * so start it first.
1813          */
1814         return (uhci_device_bulk_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
1815 }
1816
1817 usbd_status
1818 uhci_device_bulk_start(usbd_xfer_handle xfer)
1819 {
1820         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1821         usbd_device_handle dev = upipe->pipe.device;
1822         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
1823         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
1824         uhci_soft_td_t *data, *dataend;
1825         uhci_soft_qh_t *sqh;
1826         usbd_status err;
1827         int len, isread, endpt;
1828
1829         DPRINTFN(3, ("uhci_device_bulk_start: xfer=%p len=%d flags=%d ii=%p\n",
1830                      xfer, xfer->length, xfer->flags, ii));
1831
1832         if (sc->sc_dying)
1833                 return (USBD_IOERROR);
1834
1835 #ifdef DIAGNOSTIC
1836         if (xfer->rqflags & URQ_REQUEST)
1837                 panic("uhci_device_bulk_transfer: a request");
1838 #endif
1839
1840         len = xfer->length;
1841         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
1842         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
1843         sqh = upipe->u.bulk.sqh;
1844
1845         upipe->u.bulk.isread = isread;
1846         upipe->u.bulk.length = len;
1847
1848         err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
1849                                    &xfer->dmabuf, &data, &dataend);
1850         if (err)
1851                 return (err);
1852         dataend->td.td_status |= htole32(UHCI_TD_IOC);
1853
1854 #ifdef USB_DEBUG
1855         if (uhcidebug > 8) {
1856                 DPRINTF(("uhci_device_bulk_transfer: data(1)\n"));
1857                 uhci_dump_tds(data);
1858         }
1859 #endif
1860
1861         /* Set up interrupt info. */
1862         ii->xfer = xfer;
1863         ii->stdstart = data;
1864         ii->stdend = dataend;
1865 #ifdef DIAGNOSTIC
1866         if (!ii->isdone) {
1867                 kprintf("uhci_device_bulk_transfer: not done, ii=%p\n", ii);
1868         }
1869         ii->isdone = 0;
1870 #endif
1871
1872         sqh->elink = data;
1873         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
1874
1875         crit_enter();
1876         uhci_add_bulk(sc, sqh);
1877         uhci_add_intr_info(sc, ii);
1878
1879         if (xfer->timeout && !sc->sc_bus.use_polling) {
1880                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
1881                             uhci_timeout, ii);
1882         }
1883         xfer->status = USBD_IN_PROGRESS;
1884         crit_exit();
1885
1886 #ifdef USB_DEBUG
1887         if (uhcidebug > 10) {
1888                 DPRINTF(("uhci_device_bulk_transfer: data(2)\n"));
1889                 uhci_dump_tds(data);
1890         }
1891 #endif
1892
1893         if (sc->sc_bus.use_polling)
1894                 uhci_waitintr(sc, xfer);
1895
1896         return (USBD_IN_PROGRESS);
1897 }
1898
1899 /* Abort a device bulk request. */
1900 void
1901 uhci_device_bulk_abort(usbd_xfer_handle xfer)
1902 {
1903         DPRINTF(("uhci_device_bulk_abort:\n"));
1904         uhci_abort_xfer(xfer, USBD_CANCELLED);
1905 }
1906
1907 /*
1908  * Abort a device request.
1909  * If this routine is called from a critical section.  It guarantees that
1910  * the request will be removed from the hardware scheduling and that
1911  * the callback for it will be called with USBD_CANCELLED status.
1912  * It's impossible to guarantee that the requested transfer will not
1913  * have happened since the hardware runs concurrently.
1914  * If the transaction has already happened we rely on the ordinary
1915  * interrupt processing to process it.
1916  */
1917 void
1918 uhci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
1919 {
1920         struct uhci_xfer *uxfer = UXFER(xfer);
1921         uhci_intr_info_t *ii = &uxfer->iinfo;
1922         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
1923         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
1924         uhci_soft_td_t *std;
1925
1926         DPRINTFN(1,("uhci_abort_xfer: xfer=%p, status=%d\n", xfer, status));
1927
1928         if (sc->sc_dying) {
1929                 /* If we're dying, just do the software part. */
1930                 crit_enter();
1931                 xfer->status = status;  /* make software ignore it */
1932                 usb_uncallout(xfer->timeout_handle, uhci_timeout, xfer);
1933                 usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1934                 usb_transfer_complete(xfer);
1935                 crit_exit();
1936                 return;
1937         }
1938
1939         if (xfer->device->bus->intr_context /* || !curproc REMOVED DFly */)
1940                 panic("uhci_abort_xfer: not in process context");
1941
1942         /*
1943          * If an abort is already in progress then just wait for it to
1944          * complete and return.
1945          */
1946         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING) {
1947                 DPRINTFN(2, ("uhci_abort_xfer: already aborting\n"));
1948                 /* No need to wait if we're aborting from a timeout. */
1949                 if (status == USBD_TIMEOUT)
1950                         return;
1951                 /* Override the status which might be USBD_TIMEOUT. */
1952                 xfer->status = status;
1953                 DPRINTFN(2, ("uhci_abort_xfer: waiting for abort to finish\n"));
1954                 uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTWAIT;
1955                 while (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTING)
1956                         tsleep(&uxfer->uhci_xfer_flags, 0, "uhciaw", 0);
1957                 return;
1958         }
1959
1960         /*
1961          * Step 1: Make interrupt routine and hardware ignore xfer.
1962          */
1963         crit_enter();
1964         uxfer->uhci_xfer_flags |= UHCI_XFER_ABORTING;
1965         xfer->status = status;  /* make software ignore it */
1966         usb_uncallout(xfer->timeout_handle, uhci_timeout, ii);
1967         usb_rem_task(xfer->pipe->device, &UXFER(xfer)->abort_task);
1968         DPRINTFN(1,("uhci_abort_xfer: stop ii=%p\n", ii));
1969         for (std = ii->stdstart; std != NULL; std = std->link.std)
1970                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
1971         crit_exit();
1972
1973         /*
1974          * Step 2: Wait until we know hardware has finished any possible
1975          * use of the xfer.  Also make sure the soft interrupt routine
1976          * has run.
1977          */
1978         usb_delay_ms(upipe->pipe.device->bus, 2); /* Hardware finishes in 1ms */
1979         crit_enter();
1980 #ifdef USB_USE_SOFTINTR
1981         sc->sc_softwake = 1;
1982 #endif /* USB_USE_SOFTINTR */
1983         usb_schedsoftintr(&sc->sc_bus);
1984 #ifdef USB_USE_SOFTINTR
1985         DPRINTFN(1,("uhci_abort_xfer: tsleep\n"));
1986         tsleep(&sc->sc_softwake, 0, "uhciab", 0);
1987 #endif /* USB_USE_SOFTINTR */
1988
1989         /*
1990          * Step 3: Execute callback.
1991          */
1992         DPRINTFN(1,("uhci_abort_xfer: callback\n"));
1993 #ifdef DIAGNOSTIC
1994         ii->isdone = 1;
1995 #endif
1996         /* Do the wakeup first to avoid touching the xfer after the callback. */
1997         uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTING;
1998         if (uxfer->uhci_xfer_flags & UHCI_XFER_ABORTWAIT) {
1999                 uxfer->uhci_xfer_flags &= ~UHCI_XFER_ABORTWAIT;
2000                 wakeup(&uxfer->uhci_xfer_flags);
2001         }
2002         usb_transfer_complete(xfer);
2003         crit_exit();
2004 }
2005
2006 /* Close a device bulk pipe. */
2007 void
2008 uhci_device_bulk_close(usbd_pipe_handle pipe)
2009 {
2010         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2011         usbd_device_handle dev = upipe->pipe.device;
2012         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2013
2014         uhci_free_sqh(sc, upipe->u.bulk.sqh);
2015         pipe->endpoint->savedtoggle = upipe->nexttoggle;
2016 }
2017
2018 usbd_status
2019 uhci_device_ctrl_transfer(usbd_xfer_handle xfer)
2020 {
2021         usbd_status err;
2022
2023         /* Insert last in queue. */
2024         err = usb_insert_transfer(xfer);
2025         if (err)
2026                 return (err);
2027
2028         /*
2029          * Pipe isn't running (otherwise err would be USBD_INPROG),
2030          * so start it first.
2031          */
2032         return (uhci_device_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2033 }
2034
2035 usbd_status
2036 uhci_device_ctrl_start(usbd_xfer_handle xfer)
2037 {
2038         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
2039         usbd_status err;
2040
2041         if (sc->sc_dying)
2042                 return (USBD_IOERROR);
2043
2044 #ifdef DIAGNOSTIC
2045         if (!(xfer->rqflags & URQ_REQUEST))
2046                 panic("uhci_device_ctrl_transfer: not a request");
2047 #endif
2048
2049         err = uhci_device_request(xfer);
2050         if (err)
2051                 return (err);
2052
2053         if (sc->sc_bus.use_polling)
2054                 uhci_waitintr(sc, xfer);
2055         return (USBD_IN_PROGRESS);
2056 }
2057
2058 usbd_status
2059 uhci_device_intr_transfer(usbd_xfer_handle xfer)
2060 {
2061         usbd_status err;
2062
2063         /* Insert last in queue. */
2064         err = usb_insert_transfer(xfer);
2065         if (err)
2066                 return (err);
2067
2068         /*
2069          * Pipe isn't running (otherwise err would be USBD_INPROG),
2070          * so start it first.
2071          */
2072         return (uhci_device_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
2073 }
2074
2075 usbd_status
2076 uhci_device_intr_start(usbd_xfer_handle xfer)
2077 {
2078         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2079         usbd_device_handle dev = upipe->pipe.device;
2080         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2081         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2082         uhci_soft_td_t *data, *dataend;
2083         uhci_soft_qh_t *sqh;
2084         usbd_status err;
2085         int isread, endpt;
2086         int i;
2087
2088         if (sc->sc_dying)
2089                 return (USBD_IOERROR);
2090
2091         DPRINTFN(3,("uhci_device_intr_transfer: xfer=%p len=%d flags=%d\n",
2092                     xfer, xfer->length, xfer->flags));
2093
2094 #ifdef DIAGNOSTIC
2095         if (xfer->rqflags & URQ_REQUEST)
2096                 panic("uhci_device_intr_transfer: a request");
2097 #endif
2098
2099         endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2100         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
2101         sqh = upipe->u.bulk.sqh;
2102
2103         upipe->u.intr.isread = isread;
2104
2105         err = uhci_alloc_std_chain(upipe, sc, xfer->length, isread,
2106                                    xfer->flags, &xfer->dmabuf, &data,
2107                                    &dataend);
2108         if (err)
2109                 return (err);
2110         dataend->td.td_status |= htole32(UHCI_TD_IOC);
2111
2112 #ifdef USB_DEBUG
2113         if (uhcidebug > 10) {
2114                 DPRINTF(("uhci_device_intr_transfer: data(1)\n"));
2115                 uhci_dump_tds(data);
2116                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2117         }
2118 #endif
2119
2120         crit_enter();
2121         /* Set up interrupt info. */
2122         ii->xfer = xfer;
2123         ii->stdstart = data;
2124         ii->stdend = dataend;
2125 #ifdef DIAGNOSTIC
2126         if (!ii->isdone) {
2127                 kprintf("uhci_device_intr_transfer: not done, ii=%p\n", ii);
2128         }
2129         ii->isdone = 0;
2130 #endif
2131
2132         DPRINTFN(10,("uhci_device_intr_transfer: qhs[0]=%p\n",
2133                      upipe->u.intr.qhs[0]));
2134         for (i = 0; i < upipe->u.intr.npoll; i++) {
2135                 sqh = upipe->u.intr.qhs[i];
2136                 sqh->elink = data;
2137                 sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2138         }
2139         uhci_add_intr_info(sc, ii);
2140         xfer->status = USBD_IN_PROGRESS;
2141         crit_exit();
2142
2143 #ifdef USB_DEBUG
2144         if (uhcidebug > 10) {
2145                 DPRINTF(("uhci_device_intr_transfer: data(2)\n"));
2146                 uhci_dump_tds(data);
2147                 uhci_dump_qh(upipe->u.intr.qhs[0]);
2148         }
2149 #endif
2150
2151         return (USBD_IN_PROGRESS);
2152 }
2153
2154 /* Abort a device control request. */
2155 void
2156 uhci_device_ctrl_abort(usbd_xfer_handle xfer)
2157 {
2158         DPRINTF(("uhci_device_ctrl_abort:\n"));
2159         uhci_abort_xfer(xfer, USBD_CANCELLED);
2160 }
2161
2162 /* Close a device control pipe. */
2163 void
2164 uhci_device_ctrl_close(usbd_pipe_handle pipe)
2165 {
2166 }
2167
2168 /* Abort a device interrupt request. */
2169 void
2170 uhci_device_intr_abort(usbd_xfer_handle xfer)
2171 {
2172         DPRINTFN(1,("uhci_device_intr_abort: xfer=%p\n", xfer));
2173         if (xfer->pipe->intrxfer == xfer) {
2174                 DPRINTFN(1,("uhci_device_intr_abort: remove\n"));
2175                 xfer->pipe->intrxfer = NULL;
2176         }
2177         uhci_abort_xfer(xfer, USBD_CANCELLED);
2178 }
2179
2180 /* Close a device interrupt pipe. */
2181 void
2182 uhci_device_intr_close(usbd_pipe_handle pipe)
2183 {
2184         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2185         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2186         int i, npoll;
2187
2188         /* Unlink descriptors from controller data structures. */
2189         npoll = upipe->u.intr.npoll;
2190         crit_enter();
2191         for (i = 0; i < npoll; i++)
2192                 uhci_remove_intr(sc, upipe->u.intr.qhs[i]);
2193         crit_exit();
2194
2195         /*
2196          * We now have to wait for any activity on the physical
2197          * descriptors to stop.
2198          */
2199         usb_delay_ms(&sc->sc_bus, 2);
2200
2201         for(i = 0; i < npoll; i++)
2202                 uhci_free_sqh(sc, upipe->u.intr.qhs[i]);
2203         kfree(upipe->u.intr.qhs, M_USBHC);
2204
2205         /* XXX free other resources */
2206 }
2207
2208 usbd_status
2209 uhci_device_request(usbd_xfer_handle xfer)
2210 {
2211         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2212         usb_device_request_t *req = &xfer->request;
2213         usbd_device_handle dev = upipe->pipe.device;
2214         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2215         int addr = dev->address;
2216         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2217         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2218         uhci_soft_td_t *setup, *data, *stat, *next, *dataend;
2219         uhci_soft_qh_t *sqh;
2220         int len;
2221         u_int32_t ls;
2222         usbd_status err;
2223         int isread;
2224
2225         DPRINTFN(3,("uhci_device_control type=0x%02x, request=0x%02x, "
2226                     "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
2227                     req->bmRequestType, req->bRequest, UGETW(req->wValue),
2228                     UGETW(req->wIndex), UGETW(req->wLength),
2229                     addr, endpt));
2230
2231         ls = dev->speed == USB_SPEED_LOW ? UHCI_TD_LS : 0;
2232         isread = req->bmRequestType & UT_READ;
2233         len = UGETW(req->wLength);
2234
2235         setup = upipe->u.ctl.setup;
2236         stat = upipe->u.ctl.stat;
2237         sqh = upipe->u.ctl.sqh;
2238
2239         /* Set up data transaction */
2240         if (len != 0) {
2241                 upipe->nexttoggle = 1;
2242                 err = uhci_alloc_std_chain(upipe, sc, len, isread, xfer->flags,
2243                                            &xfer->dmabuf, &data, &dataend);
2244                 if (err)
2245                         return (err);
2246                 next = data;
2247                 dataend->link.std = stat;
2248                 dataend->td.td_link = htole32(stat->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2249         } else {
2250                 next = stat;
2251         }
2252         upipe->u.ctl.length = len;
2253
2254         memcpy(KERNADDR(&upipe->u.ctl.reqdma, 0), req, sizeof *req);
2255
2256         setup->link.std = next;
2257         setup->td.td_link = htole32(next->physaddr | UHCI_PTR_VF | UHCI_PTR_TD);
2258         setup->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2259                 UHCI_TD_ACTIVE);
2260         setup->td.td_token = htole32(UHCI_TD_SETUP(sizeof *req, endpt, addr));
2261         setup->td.td_buffer = htole32(DMAADDR(&upipe->u.ctl.reqdma, 0));
2262         stat->link.std = NULL;
2263         stat->td.td_link = htole32(UHCI_PTR_T);
2264         stat->td.td_status = htole32(UHCI_TD_SET_ERRCNT(3) | ls |
2265                 UHCI_TD_ACTIVE | UHCI_TD_IOC);
2266
2267         stat->td.td_token =
2268                 htole32(isread ? UHCI_TD_OUT(0, endpt, addr, 1) :
2269                                  UHCI_TD_IN (0, endpt, addr, 1));
2270         stat->td.td_buffer = htole32(0);
2271
2272 #ifdef USB_DEBUG
2273         if (uhcidebug > 10) {
2274                 DPRINTF(("uhci_device_request: before transfer\n"));
2275                 uhci_dump_tds(setup);
2276         }
2277 #endif
2278
2279         /* Set up interrupt info. */
2280         ii->xfer = xfer;
2281         ii->stdstart = setup;
2282         ii->stdend = stat;
2283 #ifdef DIAGNOSTIC
2284         if (!ii->isdone) {
2285                 kprintf("uhci_device_request: not done, ii=%p\n", ii);
2286         }
2287         ii->isdone = 0;
2288 #endif
2289
2290         sqh->elink = setup;
2291         sqh->qh.qh_elink = htole32(setup->physaddr | UHCI_PTR_TD);
2292
2293         crit_enter();
2294         if (dev->speed == USB_SPEED_LOW)
2295                 uhci_add_ls_ctrl(sc, sqh);
2296         else
2297                 uhci_add_hs_ctrl(sc, sqh);
2298         uhci_add_intr_info(sc, ii);
2299 #ifdef USB_DEBUG
2300         if (uhcidebug > 12) {
2301                 uhci_soft_td_t *std;
2302                 uhci_soft_qh_t *xqh;
2303                 uhci_soft_qh_t *sxqh;
2304                 int maxqh = 0;
2305                 uhci_physaddr_t link;
2306                 DPRINTF(("uhci_enter_ctl_q: follow from [0]\n"));
2307                 for (std = sc->sc_vframes[0].htd, link = 0;
2308                      (link & UHCI_PTR_QH) == 0;
2309                      std = std->link.std) {
2310                         link = le32toh(std->td.td_link);
2311                         uhci_dump_td(std);
2312                 }
2313                 sxqh = (uhci_soft_qh_t *)std;
2314                 uhci_dump_qh(sxqh);
2315                 for (xqh = sxqh;
2316                      xqh != NULL;
2317                      xqh = (maxqh++ == 5 || xqh->hlink == sxqh ||
2318                             xqh->hlink == xqh ? NULL : xqh->hlink)) {
2319                         uhci_dump_qh(xqh);
2320                 }
2321                 DPRINTF(("Enqueued QH:\n"));
2322                 uhci_dump_qh(sqh);
2323                 uhci_dump_tds(sqh->elink);
2324         }
2325 #endif
2326         if (xfer->timeout && !sc->sc_bus.use_polling) {
2327                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
2328                             uhci_timeout, ii);
2329         }
2330         xfer->status = USBD_IN_PROGRESS;
2331         crit_exit();
2332
2333         return (USBD_NORMAL_COMPLETION);
2334 }
2335
2336 usbd_status
2337 uhci_device_isoc_transfer(usbd_xfer_handle xfer)
2338 {
2339         usbd_status err;
2340
2341         DPRINTFN(5,("uhci_device_isoc_transfer: xfer=%p\n", xfer));
2342
2343         /* Put it on our queue, */
2344         err = usb_insert_transfer(xfer);
2345
2346         /* bail out on error, */
2347         if (err && err != USBD_IN_PROGRESS)
2348                 return (err);
2349
2350         /* XXX should check inuse here */
2351
2352         /* insert into schedule, */
2353         uhci_device_isoc_enter(xfer);
2354
2355         /* and start if the pipe wasn't running */
2356         if (!err)
2357                 uhci_device_isoc_start(SIMPLEQ_FIRST(&xfer->pipe->queue));
2358
2359         return (err);
2360 }
2361
2362 void
2363 uhci_device_isoc_enter(usbd_xfer_handle xfer)
2364 {
2365         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2366         usbd_device_handle dev = upipe->pipe.device;
2367         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2368         struct iso *iso = &upipe->u.iso;
2369         uhci_soft_td_t *std;
2370         u_int32_t buf, len, status;
2371         int i, next, nframes;
2372
2373         DPRINTFN(5,("uhci_device_isoc_enter: used=%d next=%d xfer=%p "
2374                     "nframes=%d\n",
2375                     iso->inuse, iso->next, xfer, xfer->nframes));
2376
2377         if (sc->sc_dying)
2378                 return;
2379
2380         if (xfer->status == USBD_IN_PROGRESS) {
2381                 /* This request has already been entered into the frame list */
2382                 kprintf("uhci_device_isoc_enter: xfer=%p in frame list\n", xfer);
2383                 /* XXX */
2384         }
2385
2386 #ifdef DIAGNOSTIC
2387         if (iso->inuse >= UHCI_VFRAMELIST_COUNT)
2388                 kprintf("uhci_device_isoc_enter: overflow!\n");
2389 #endif
2390
2391         next = iso->next;
2392         if (next == -1) {
2393                 /* Not in use yet, schedule it a few frames ahead. */
2394                 next = (UREAD2(sc, UHCI_FRNUM) + 3) % UHCI_VFRAMELIST_COUNT;
2395                 DPRINTFN(2,("uhci_device_isoc_enter: start next=%d\n", next));
2396         }
2397
2398         xfer->status = USBD_IN_PROGRESS;
2399         UXFER(xfer)->curframe = next;
2400
2401         buf = DMAADDR(&xfer->dmabuf, 0);
2402         status = UHCI_TD_ZERO_ACTLEN(UHCI_TD_SET_ERRCNT(0) |
2403                                      UHCI_TD_ACTIVE |
2404                                      UHCI_TD_IOS);
2405         nframes = xfer->nframes;
2406         crit_enter();
2407         for (i = 0; i < nframes; i++) {
2408                 std = iso->stds[next];
2409                 if (++next >= UHCI_VFRAMELIST_COUNT)
2410                         next = 0;
2411                 len = xfer->frlengths[i];
2412                 std->td.td_buffer = htole32(buf);
2413                 if (i == nframes - 1)
2414                         status |= UHCI_TD_IOC;
2415                 std->td.td_status = htole32(status);
2416                 std->td.td_token &= htole32(~UHCI_TD_MAXLEN_MASK);
2417                 std->td.td_token |= htole32(UHCI_TD_SET_MAXLEN(len));
2418 #ifdef USB_DEBUG
2419                 if (uhcidebug > 5) {
2420                         DPRINTFN(5,("uhci_device_isoc_enter: TD %d\n", i));
2421                         uhci_dump_td(std);
2422                 }
2423 #endif
2424                 buf += len;
2425         }
2426         iso->next = next;
2427         iso->inuse += xfer->nframes;
2428
2429         crit_exit();
2430 }
2431
2432 usbd_status
2433 uhci_device_isoc_start(usbd_xfer_handle xfer)
2434 {
2435         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2436         uhci_softc_t *sc = (uhci_softc_t *)upipe->pipe.device->bus;
2437         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2438         uhci_soft_td_t *end;
2439         int i;
2440
2441         DPRINTFN(5,("uhci_device_isoc_start: xfer=%p\n", xfer));
2442
2443         if (sc->sc_dying)
2444                 return (USBD_IOERROR);
2445
2446 #ifdef DIAGNOSTIC
2447         if (xfer->status != USBD_IN_PROGRESS)
2448                 kprintf("uhci_device_isoc_start: not in progress %p\n", xfer);
2449 #endif
2450
2451         /* Find the last TD */
2452         i = UXFER(xfer)->curframe + xfer->nframes;
2453         if (i >= UHCI_VFRAMELIST_COUNT)
2454                 i -= UHCI_VFRAMELIST_COUNT;
2455         end = upipe->u.iso.stds[i];
2456
2457 #ifdef DIAGNOSTIC
2458         if (end == NULL) {
2459                 kprintf("uhci_device_isoc_start: end == NULL\n");
2460                 return (USBD_INVAL);
2461         }
2462 #endif
2463
2464         crit_enter();
2465
2466         /* Set up interrupt info. */
2467         ii->xfer = xfer;
2468         ii->stdstart = end;
2469         ii->stdend = end;
2470 #ifdef DIAGNOSTIC
2471         if (!ii->isdone)
2472                 kprintf("uhci_device_isoc_start: not done, ii=%p\n", ii);
2473         ii->isdone = 0;
2474 #endif
2475         uhci_add_intr_info(sc, ii);
2476
2477         crit_exit();
2478
2479         return (USBD_IN_PROGRESS);
2480 }
2481
2482 void
2483 uhci_device_isoc_abort(usbd_xfer_handle xfer)
2484 {
2485         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2486         uhci_soft_td_t **stds = upipe->u.iso.stds;
2487         uhci_soft_td_t *std;
2488         int i, n, nframes, maxlen, len;
2489
2490         crit_enter();
2491
2492         /* Transfer is already done. */
2493         if (xfer->status != USBD_NOT_STARTED &&
2494             xfer->status != USBD_IN_PROGRESS) {
2495                 crit_exit();
2496                 return;
2497         }
2498
2499         /* Give xfer the requested abort code. */
2500         xfer->status = USBD_CANCELLED;
2501
2502         /* make hardware ignore it, */
2503         nframes = xfer->nframes;
2504         n = UXFER(xfer)->curframe;
2505         maxlen = 0;
2506         for (i = 0; i < nframes; i++) {
2507                 std = stds[n];
2508                 std->td.td_status &= htole32(~(UHCI_TD_ACTIVE | UHCI_TD_IOC));
2509                 len = UHCI_TD_GET_MAXLEN(le32toh(std->td.td_token));
2510                 if (len > maxlen)
2511                         maxlen = len;
2512                 if (++n >= UHCI_VFRAMELIST_COUNT)
2513                         n = 0;
2514         }
2515
2516         /* and wait until we are sure the hardware has finished. */
2517         delay(maxlen);
2518
2519 #ifdef DIAGNOSTIC
2520         UXFER(xfer)->iinfo.isdone = 1;
2521 #endif
2522         /* Run callback and remove from interrupt list. */
2523         usb_transfer_complete(xfer);
2524
2525         crit_exit();
2526 }
2527
2528 void
2529 uhci_device_isoc_close(usbd_pipe_handle pipe)
2530 {
2531         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2532         usbd_device_handle dev = upipe->pipe.device;
2533         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2534         uhci_soft_td_t *std, *vstd;
2535         struct iso *iso;
2536         int i;
2537
2538         /*
2539          * Make sure all TDs are marked as inactive.
2540          * Wait for completion.
2541          * Unschedule.
2542          * Deallocate.
2543          */
2544         iso = &upipe->u.iso;
2545
2546         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++)
2547                 iso->stds[i]->td.td_status &= htole32(~UHCI_TD_ACTIVE);
2548         usb_delay_ms(&sc->sc_bus, 2); /* wait for completion */
2549
2550         crit_enter();
2551         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2552                 std = iso->stds[i];
2553                 for (vstd = sc->sc_vframes[i].htd;
2554                      vstd != NULL && vstd->link.std != std;
2555                      vstd = vstd->link.std)
2556                         ;
2557                 if (vstd == NULL) {
2558                         /*panic*/
2559                         kprintf("uhci_device_isoc_close: %p not found\n", std);
2560                         crit_exit();
2561                         return;
2562                 }
2563                 vstd->link = std->link;
2564                 vstd->td.td_link = std->td.td_link;
2565                 uhci_free_std(sc, std);
2566         }
2567         crit_exit();
2568
2569         kfree(iso->stds, M_USBHC);
2570 }
2571
2572 usbd_status
2573 uhci_setup_isoc(usbd_pipe_handle pipe)
2574 {
2575         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2576         usbd_device_handle dev = upipe->pipe.device;
2577         uhci_softc_t *sc = (uhci_softc_t *)dev->bus;
2578         int addr = upipe->pipe.device->address;
2579         int endpt = upipe->pipe.endpoint->edesc->bEndpointAddress;
2580         int rd = UE_GET_DIR(endpt) == UE_DIR_IN;
2581         uhci_soft_td_t *std, *vstd;
2582         u_int32_t token;
2583         struct iso *iso;
2584         int i;
2585
2586         iso = &upipe->u.iso;
2587         iso->stds = kmalloc(UHCI_VFRAMELIST_COUNT * sizeof (uhci_soft_td_t *),
2588                            M_USBHC, M_INTWAIT);
2589
2590         token = rd ? UHCI_TD_IN (0, endpt, addr, 0) :
2591                      UHCI_TD_OUT(0, endpt, addr, 0);
2592
2593         /* Allocate the TDs and mark as inactive; */
2594         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2595                 std = uhci_alloc_std(sc);
2596                 if (std == 0)
2597                         goto bad;
2598                 std->td.td_status = htole32(UHCI_TD_IOS); /* iso, inactive */
2599                 std->td.td_token = htole32(token);
2600                 iso->stds[i] = std;
2601         }
2602
2603         /* Insert TDs into schedule. */
2604         crit_enter();
2605         for (i = 0; i < UHCI_VFRAMELIST_COUNT; i++) {
2606                 std = iso->stds[i];
2607                 vstd = sc->sc_vframes[i].htd;
2608                 std->link = vstd->link;
2609                 std->td.td_link = vstd->td.td_link;
2610                 vstd->link.std = std;
2611                 vstd->td.td_link = htole32(std->physaddr | UHCI_PTR_TD);
2612         }
2613         crit_exit();
2614
2615         iso->next = -1;
2616         iso->inuse = 0;
2617
2618         return (USBD_NORMAL_COMPLETION);
2619
2620  bad:
2621         while (--i >= 0)
2622                 uhci_free_std(sc, iso->stds[i]);
2623         kfree(iso->stds, M_USBHC);
2624         return (USBD_NOMEM);
2625 }
2626
2627 void
2628 uhci_device_isoc_done(usbd_xfer_handle xfer)
2629 {
2630         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2631
2632         DPRINTFN(4, ("uhci_isoc_done: length=%d\n", xfer->actlen));
2633
2634         if (ii->xfer != xfer)
2635                 /* Not on interrupt list, ignore it. */
2636                 return;
2637
2638         if (!uhci_active_intr_info(ii))
2639                 return;
2640
2641 #ifdef DIAGNOSTIC
2642         if (xfer->busy_free != XFER_BUSY) {
2643                 kprintf("uhci_device_isoc_done: xfer=%p not busy 0x%08x\n",
2644                        xfer, xfer->busy_free);
2645                 return;
2646         }
2647
2648         if (ii->stdend == NULL) {
2649                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2650 #ifdef USB_DEBUG
2651                 uhci_dump_ii(ii);
2652 #endif
2653                 return;
2654         }
2655 #endif
2656
2657         /* Turn off the interrupt since it is active even if the TD is not. */
2658         ii->stdend->td.td_status &= htole32(~UHCI_TD_IOC);
2659
2660         uhci_del_intr_info(ii); /* remove from active list */
2661
2662 #ifdef DIAGNOSTIC
2663         if (ii->stdend == NULL) {
2664                 kprintf("uhci_device_isoc_done: xfer=%p stdend==NULL\n", xfer);
2665 #ifdef USB_DEBUG
2666                 uhci_dump_ii(ii);
2667 #endif
2668                 return;
2669         }
2670 #endif
2671 }
2672
2673 void
2674 uhci_device_intr_done(usbd_xfer_handle xfer)
2675 {
2676         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2677         uhci_softc_t *sc = ii->sc;
2678         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2679         uhci_soft_qh_t *sqh;
2680         int i, npoll;
2681
2682         DPRINTFN(5, ("uhci_device_intr_done: length=%d\n", xfer->actlen));
2683
2684         npoll = upipe->u.intr.npoll;
2685         for(i = 0; i < npoll; i++) {
2686                 sqh = upipe->u.intr.qhs[i];
2687                 sqh->elink = NULL;
2688                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2689         }
2690         uhci_free_std_chain(sc, ii->stdstart, NULL);
2691
2692         /* XXX Wasteful. */
2693         if (xfer->pipe->repeat) {
2694                 uhci_soft_td_t *data, *dataend;
2695
2696                 DPRINTFN(5,("uhci_device_intr_done: requeueing\n"));
2697
2698                 /* This alloc cannot fail since we freed the chain above. */
2699                 uhci_alloc_std_chain(upipe, sc, xfer->length,
2700                                      upipe->u.intr.isread, xfer->flags,
2701                                      &xfer->dmabuf, &data, &dataend);
2702                 dataend->td.td_status |= htole32(UHCI_TD_IOC);
2703
2704 #ifdef USB_DEBUG
2705                 if (uhcidebug > 10) {
2706                         DPRINTF(("uhci_device_intr_done: data(1)\n"));
2707                         uhci_dump_tds(data);
2708                         uhci_dump_qh(upipe->u.intr.qhs[0]);
2709                 }
2710 #endif
2711
2712                 ii->stdstart = data;
2713                 ii->stdend = dataend;
2714 #ifdef DIAGNOSTIC
2715                 if (!ii->isdone) {
2716                         kprintf("uhci_device_intr_done: not done, ii=%p\n", ii);
2717                 }
2718                 ii->isdone = 0;
2719 #endif
2720                 for (i = 0; i < npoll; i++) {
2721                         sqh = upipe->u.intr.qhs[i];
2722                         sqh->elink = data;
2723                         sqh->qh.qh_elink = htole32(data->physaddr | UHCI_PTR_TD);
2724                 }
2725                 xfer->status = USBD_IN_PROGRESS;
2726                 /* The ii is already on the examined list, just leave it. */
2727         } else {
2728                 DPRINTFN(5,("uhci_device_intr_done: removing\n"));
2729                 if (uhci_active_intr_info(ii))
2730                         uhci_del_intr_info(ii);
2731         }
2732 }
2733
2734 /* Deallocate request data structures */
2735 void
2736 uhci_device_ctrl_done(usbd_xfer_handle xfer)
2737 {
2738         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2739         uhci_softc_t *sc = ii->sc;
2740         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2741
2742 #ifdef DIAGNOSTIC
2743         if (!(xfer->rqflags & URQ_REQUEST))
2744                 panic("uhci_device_ctrl_done: not a request");
2745 #endif
2746
2747         if (!uhci_active_intr_info(ii))
2748                 return;
2749
2750         uhci_del_intr_info(ii); /* remove from active list */
2751
2752         if (upipe->pipe.device->speed == USB_SPEED_LOW)
2753                 uhci_remove_ls_ctrl(sc, upipe->u.ctl.sqh);
2754         else
2755                 uhci_remove_hs_ctrl(sc, upipe->u.ctl.sqh);
2756
2757         if (upipe->u.ctl.length != 0)
2758                 uhci_free_std_chain(sc, ii->stdstart->link.std, ii->stdend);
2759
2760         DPRINTFN(5, ("uhci_device_ctrl_done: length=%d\n", xfer->actlen));
2761 }
2762
2763 /* Deallocate request data structures */
2764 void
2765 uhci_device_bulk_done(usbd_xfer_handle xfer)
2766 {
2767         uhci_intr_info_t *ii = &UXFER(xfer)->iinfo;
2768         uhci_softc_t *sc = ii->sc;
2769         struct uhci_pipe *upipe = (struct uhci_pipe *)xfer->pipe;
2770
2771         DPRINTFN(5,("uhci_device_bulk_done: xfer=%p ii=%p sc=%p upipe=%p\n",
2772                     xfer, ii, sc, upipe));
2773
2774         if (!uhci_active_intr_info(ii))
2775                 return;
2776
2777         uhci_del_intr_info(ii); /* remove from active list */
2778
2779         uhci_remove_bulk(sc, upipe->u.bulk.sqh);
2780
2781         uhci_free_std_chain(sc, ii->stdstart, NULL);
2782
2783         DPRINTFN(5, ("uhci_device_bulk_done: length=%d\n", xfer->actlen));
2784 }
2785
2786 /* Add interrupt QH, called with vflock. */
2787 void
2788 uhci_add_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2789 {
2790         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2791         uhci_soft_qh_t *eqh;
2792
2793         DPRINTFN(4, ("uhci_add_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2794
2795         eqh = vf->eqh;
2796         sqh->hlink       = eqh->hlink;
2797         sqh->qh.qh_hlink = eqh->qh.qh_hlink;
2798         eqh->hlink       = sqh;
2799         eqh->qh.qh_hlink = htole32(sqh->physaddr | UHCI_PTR_QH);
2800         vf->eqh = sqh;
2801         vf->bandwidth++;
2802 }
2803
2804 /* Remove interrupt QH. */
2805 void
2806 uhci_remove_intr(uhci_softc_t *sc, uhci_soft_qh_t *sqh)
2807 {
2808         struct uhci_vframe *vf = &sc->sc_vframes[sqh->pos];
2809         uhci_soft_qh_t *pqh;
2810
2811         DPRINTFN(4, ("uhci_remove_intr: n=%d sqh=%p\n", sqh->pos, sqh));
2812
2813         /* See comment in uhci_remove_ctrl() */
2814         if (!(sqh->qh.qh_elink & htole32(UHCI_PTR_T))) {
2815                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2816                 delay(UHCI_QH_REMOVE_DELAY);
2817         }
2818
2819         pqh = uhci_find_prev_qh(vf->hqh, sqh);
2820         pqh->hlink       = sqh->hlink;
2821         pqh->qh.qh_hlink = sqh->qh.qh_hlink;
2822         delay(UHCI_QH_REMOVE_DELAY);
2823         if (vf->eqh == sqh)
2824                 vf->eqh = pqh;
2825         vf->bandwidth--;
2826 }
2827
2828 usbd_status
2829 uhci_device_setintr(uhci_softc_t *sc, struct uhci_pipe *upipe, int ival)
2830 {
2831         uhci_soft_qh_t *sqh;
2832         int i, npoll;
2833         u_int bestbw, bw, bestoffs, offs;
2834
2835         DPRINTFN(2, ("uhci_device_setintr: pipe=%p\n", upipe));
2836         if (ival == 0) {
2837                 kprintf("uhci_setintr: 0 interval\n");
2838                 return (USBD_INVAL);
2839         }
2840
2841         if (ival > UHCI_VFRAMELIST_COUNT)
2842                 ival = UHCI_VFRAMELIST_COUNT;
2843         npoll = (UHCI_VFRAMELIST_COUNT + ival - 1) / ival;
2844         DPRINTFN(2, ("uhci_device_setintr: ival=%d npoll=%d\n", ival, npoll));
2845
2846         upipe->u.intr.npoll = npoll;
2847         upipe->u.intr.qhs =
2848                 kmalloc(npoll * sizeof(uhci_soft_qh_t *), M_USBHC, M_INTWAIT);
2849
2850         /*
2851          * Figure out which offset in the schedule that has most
2852          * bandwidth left over.
2853          */
2854 #define MOD(i) ((i) & (UHCI_VFRAMELIST_COUNT-1))
2855         for (bestoffs = offs = 0, bestbw = ~0; offs < ival; offs++) {
2856                 for (bw = i = 0; i < npoll; i++)
2857                         bw += sc->sc_vframes[MOD(i * ival + offs)].bandwidth;
2858                 if (bw < bestbw) {
2859                         bestbw = bw;
2860                         bestoffs = offs;
2861                 }
2862         }
2863         DPRINTFN(1, ("uhci_device_setintr: bw=%d offs=%d\n", bestbw, bestoffs));
2864
2865         for(i = 0; i < npoll; i++) {
2866                 upipe->u.intr.qhs[i] = sqh = uhci_alloc_sqh(sc);
2867                 sqh->elink = NULL;
2868                 sqh->qh.qh_elink = htole32(UHCI_PTR_T);
2869                 sqh->pos = MOD(i * ival + bestoffs);
2870         }
2871 #undef MOD
2872
2873         crit_enter();
2874         /* Enter QHs into the controller data structures. */
2875         for(i = 0; i < npoll; i++)
2876                 uhci_add_intr(sc, upipe->u.intr.qhs[i]);
2877         crit_exit();
2878
2879         DPRINTFN(5, ("uhci_device_setintr: returns %p\n", upipe));
2880         return (USBD_NORMAL_COMPLETION);
2881 }
2882
2883 /* Open a new pipe. */
2884 usbd_status
2885 uhci_open(usbd_pipe_handle pipe)
2886 {
2887         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
2888         struct uhci_pipe *upipe = (struct uhci_pipe *)pipe;
2889         usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
2890         usbd_status err;
2891         int ival;
2892
2893         DPRINTFN(1, ("uhci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
2894                      pipe, pipe->device->address,
2895                      ed->bEndpointAddress, sc->sc_addr));
2896
2897         upipe->aborting = 0;
2898         upipe->nexttoggle = pipe->endpoint->savedtoggle;
2899
2900         if (pipe->device->address == sc->sc_addr) {
2901                 switch (ed->bEndpointAddress) {
2902                 case USB_CONTROL_ENDPOINT:
2903                         pipe->methods = &uhci_root_ctrl_methods;
2904                         break;
2905                 case UE_DIR_IN | UHCI_INTR_ENDPT:
2906                         pipe->methods = &uhci_root_intr_methods;
2907                         break;
2908                 default:
2909                         return (USBD_INVAL);
2910                 }
2911         } else {
2912                 switch (ed->bmAttributes & UE_XFERTYPE) {
2913                 case UE_CONTROL:
2914                         pipe->methods = &uhci_device_ctrl_methods;
2915                         upipe->u.ctl.sqh = uhci_alloc_sqh(sc);
2916                         if (upipe->u.ctl.sqh == NULL)
2917                                 goto bad;
2918                         upipe->u.ctl.setup = uhci_alloc_std(sc);
2919                         if (upipe->u.ctl.setup == NULL) {
2920                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2921                                 goto bad;
2922                         }
2923                         upipe->u.ctl.stat = uhci_alloc_std(sc);
2924                         if (upipe->u.ctl.stat == NULL) {
2925                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2926                                 uhci_free_std(sc, upipe->u.ctl.setup);
2927                                 goto bad;
2928                         }
2929                         err = usb_allocmem(&sc->sc_bus,
2930                                   sizeof(usb_device_request_t),
2931                                   0, &upipe->u.ctl.reqdma);
2932                         if (err) {
2933                                 uhci_free_sqh(sc, upipe->u.ctl.sqh);
2934                                 uhci_free_std(sc, upipe->u.ctl.setup);
2935                                 uhci_free_std(sc, upipe->u.ctl.stat);
2936                                 goto bad;
2937                         }
2938                         break;
2939                 case UE_INTERRUPT:
2940                         pipe->methods = &uhci_device_intr_methods;
2941                         ival = pipe->interval;
2942                         if (ival == USBD_DEFAULT_INTERVAL)
2943                                 ival = ed->bInterval;
2944                         return (uhci_device_setintr(sc, upipe, ival));
2945                 case UE_ISOCHRONOUS:
2946                         pipe->methods = &uhci_device_isoc_methods;
2947                         return (uhci_setup_isoc(pipe));
2948                 case UE_BULK:
2949                         pipe->methods = &uhci_device_bulk_methods;
2950                         upipe->u.bulk.sqh = uhci_alloc_sqh(sc);
2951                         if (upipe->u.bulk.sqh == NULL)
2952                                 goto bad;
2953                         break;
2954                 }
2955         }
2956         return (USBD_NORMAL_COMPLETION);
2957
2958  bad:
2959         return (USBD_NOMEM);
2960 }
2961
2962 /*
2963  * Data structures and routines to emulate the root hub.
2964  */
2965 usb_device_descriptor_t uhci_devd = {
2966         USB_DEVICE_DESCRIPTOR_SIZE,
2967         UDESC_DEVICE,           /* type */
2968         {0x00, 0x01},           /* USB version */
2969         UDCLASS_HUB,            /* class */
2970         UDSUBCLASS_HUB,         /* subclass */
2971         UDPROTO_FSHUB,          /* protocol */
2972         64,                     /* max packet */
2973         {0},{0},{0x00,0x01},    /* device id */
2974         1,2,0,                  /* string indicies */
2975         1                       /* # of configurations */
2976 };
2977
2978 usb_config_descriptor_t uhci_confd = {
2979         USB_CONFIG_DESCRIPTOR_SIZE,
2980         UDESC_CONFIG,
2981         {USB_CONFIG_DESCRIPTOR_SIZE +
2982          USB_INTERFACE_DESCRIPTOR_SIZE +
2983          USB_ENDPOINT_DESCRIPTOR_SIZE},
2984         1,
2985         1,
2986         0,
2987         UC_SELF_POWERED,
2988         0                       /* max power */
2989 };
2990
2991 usb_interface_descriptor_t uhci_ifcd = {
2992         USB_INTERFACE_DESCRIPTOR_SIZE,
2993         UDESC_INTERFACE,
2994         0,
2995         0,
2996         1,
2997         UICLASS_HUB,
2998         UISUBCLASS_HUB,
2999         UIPROTO_FSHUB,
3000         0
3001 };
3002
3003 usb_endpoint_descriptor_t uhci_endpd = {
3004         USB_ENDPOINT_DESCRIPTOR_SIZE,
3005         UDESC_ENDPOINT,
3006         UE_DIR_IN | UHCI_INTR_ENDPT,
3007         UE_INTERRUPT,
3008         {8},
3009         255
3010 };
3011
3012 usb_hub_descriptor_t uhci_hubd_piix = {
3013         USB_HUB_DESCRIPTOR_SIZE,
3014         UDESC_HUB,
3015         2,
3016         { UHD_PWR_NO_SWITCH | UHD_OC_INDIVIDUAL, 0 },
3017         50,                     /* power on to power good */
3018         0,
3019         { 0x00 },               /* both ports are removable */
3020 };
3021
3022 int
3023 uhci_str(usb_string_descriptor_t *p, int l, char *s)
3024 {
3025         int i;
3026
3027         if (l == 0)
3028                 return (0);
3029         p->bLength = 2 * strlen(s) + 2;
3030         if (l == 1)
3031                 return (1);
3032         p->bDescriptorType = UDESC_STRING;
3033         l -= 2;
3034         for (i = 0; s[i] && l > 1; i++, l -= 2)
3035                 USETW2(p->bString[i], 0, s[i]);
3036         return (2*i+2);
3037 }
3038
3039 /*
3040  * The USB hub protocol requires that SET_FEATURE(PORT_RESET) also
3041  * enables the port, and also states that SET_FEATURE(PORT_ENABLE)
3042  * should not be used by the USB subsystem.  As we cannot issue a
3043  * SET_FEATURE(PORT_ENABLE) externally, we must ensure that the port
3044  * will be enabled as part of the reset.
3045  *
3046  * On the VT83C572, the port cannot be successfully enabled until the
3047  * outstanding "port enable change" and "connection status change"
3048  * events have been reset.
3049  */
3050 Static usbd_status
3051 uhci_portreset(uhci_softc_t *sc, int index)
3052 {
3053         int lim, port, x;
3054
3055         if (index == 1)
3056                 port = UHCI_PORTSC1;
3057         else if (index == 2)
3058                 port = UHCI_PORTSC2;
3059         else
3060                 return (USBD_IOERROR);
3061
3062         x = URWMASK(UREAD2(sc, port));
3063         UWRITE2(sc, port, x | UHCI_PORTSC_PR);
3064
3065         usb_delay_ms(&sc->sc_bus, USB_PORT_ROOT_RESET_DELAY);
3066
3067         DPRINTFN(3,("uhci port %d reset, status0 = 0x%04x\n",
3068                     index, UREAD2(sc, port)));
3069
3070         x = URWMASK(UREAD2(sc, port));
3071         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
3072
3073         delay(100);
3074
3075         DPRINTFN(3,("uhci port %d reset, status1 = 0x%04x\n",
3076                     index, UREAD2(sc, port)));
3077
3078         x = URWMASK(UREAD2(sc, port));
3079         UWRITE2(sc, port, x  | UHCI_PORTSC_PE);
3080
3081         for (lim = 10; --lim > 0;) {
3082                 usb_delay_ms(&sc->sc_bus, USB_PORT_RESET_DELAY);
3083
3084                 x = UREAD2(sc, port);
3085
3086                 DPRINTFN(3,("uhci port %d iteration %u, status = 0x%04x\n",
3087                             index, lim, x));
3088
3089                 if (!(x & UHCI_PORTSC_CCS)) {
3090                         /*
3091                          * No device is connected (or was disconnected
3092                          * during reset).  Consider the port reset.
3093                          * The delay must be long enough to ensure on
3094                          * the initial iteration that the device
3095                          * connection will have been registered.  50ms
3096                          * appears to be sufficient, but 20ms is not.
3097                          */
3098                         DPRINTFN(3,("uhci port %d loop %u, device detached\n",
3099                                     index, lim));
3100                         break;
3101                 }
3102
3103                 if (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)) {
3104                         /*
3105                          * Port enabled changed and/or connection
3106                          * status changed were set.  Reset either or
3107                          * both raised flags (by writing a 1 to that
3108                          * bit), and wait again for state to settle.
3109                          */
3110                         UWRITE2(sc, port, URWMASK(x) |
3111                                 (x & (UHCI_PORTSC_POEDC | UHCI_PORTSC_CSC)));
3112                         continue;
3113                 }
3114
3115                 if (x & UHCI_PORTSC_PE)
3116                         /* Port is enabled */
3117                         break;
3118
3119                 UWRITE2(sc, port, URWMASK(x) | UHCI_PORTSC_PE);
3120         }
3121
3122         DPRINTFN(3,("uhci port %d reset, status2 = 0x%04x\n",
3123                     index, UREAD2(sc, port)));
3124
3125         if (lim <= 0) {
3126                 DPRINTFN(1,("uhci port %d reset timed out\n", index));
3127                 return (USBD_TIMEOUT);
3128         }
3129
3130         sc->sc_isreset = 1;
3131         return (USBD_NORMAL_COMPLETION);
3132 }
3133
3134 /*
3135  * Simulate a hardware hub by handling all the necessary requests.
3136  */
3137 usbd_status
3138 uhci_root_ctrl_transfer(usbd_xfer_handle xfer)
3139 {
3140         usbd_status err;
3141
3142         /* Insert last in queue. */
3143         err = usb_insert_transfer(xfer);
3144         if (err)
3145                 return (err);
3146
3147         /*
3148          * Pipe isn't running (otherwise err would be USBD_INPROG),
3149          * so start it first.
3150          */
3151         return (uhci_root_ctrl_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
3152 }
3153
3154 usbd_status
3155 uhci_root_ctrl_start(usbd_xfer_handle xfer)
3156 {
3157         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3158         usb_device_request_t *req;
3159         void *buf = NULL;
3160         int port, x;
3161         int len, value, index, status, change, l, totlen = 0;
3162         usb_port_status_t ps;
3163         usbd_status err;
3164
3165         if (sc->sc_dying)
3166                 return (USBD_IOERROR);
3167
3168 #ifdef DIAGNOSTIC
3169         if (!(xfer->rqflags & URQ_REQUEST))
3170                 panic("uhci_root_ctrl_transfer: not a request");
3171 #endif
3172         req = &xfer->request;
3173
3174         DPRINTFN(2,("uhci_root_ctrl_control type=0x%02x request=%02x\n",
3175                     req->bmRequestType, req->bRequest));
3176
3177         len = UGETW(req->wLength);
3178         value = UGETW(req->wValue);
3179         index = UGETW(req->wIndex);
3180
3181         if (len != 0)
3182                 buf = KERNADDR(&xfer->dmabuf, 0);
3183
3184 #define C(x,y) ((x) | ((y) << 8))
3185         switch(C(req->bRequest, req->bmRequestType)) {
3186         case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
3187         case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
3188         case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
3189                 /*
3190                  * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
3191                  * for the integrated root hub.
3192                  */
3193                 break;
3194         case C(UR_GET_CONFIG, UT_READ_DEVICE):
3195                 if (len > 0) {
3196                         *(u_int8_t *)buf = sc->sc_conf;
3197                         totlen = 1;
3198                 }
3199                 break;
3200         case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
3201                 DPRINTFN(2,("uhci_root_ctrl_control wValue=0x%04x\n", value));
3202                 switch(value >> 8) {
3203                 case UDESC_DEVICE:
3204                         if ((value & 0xff) != 0) {
3205                                 err = USBD_IOERROR;
3206                                 goto ret;
3207                         }
3208                         totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
3209                         USETW(uhci_devd.idVendor, sc->sc_id_vendor);
3210                         memcpy(buf, &uhci_devd, l);
3211                         break;
3212                 case UDESC_CONFIG:
3213                         if ((value & 0xff) != 0) {
3214                                 err = USBD_IOERROR;
3215                                 goto ret;
3216                         }
3217                         totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
3218                         memcpy(buf, &uhci_confd, l);
3219                         buf = (char *)buf + l;
3220                         len -= l;
3221                         l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
3222                         totlen += l;
3223                         memcpy(buf, &uhci_ifcd, l);
3224                         buf = (char *)buf + l;
3225                         len -= l;
3226                         l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
3227                         totlen += l;
3228                         memcpy(buf, &uhci_endpd, l);
3229                         break;
3230                 case UDESC_STRING:
3231                         if (len == 0)
3232                                 break;
3233                         *(u_int8_t *)buf = 0;
3234                         totlen = 1;
3235                         switch (value & 0xff) {
3236                         case 1: /* Vendor */
3237                                 totlen = uhci_str(buf, len, sc->sc_vendor);
3238                                 break;
3239                         case 2: /* Product */
3240                                 totlen = uhci_str(buf, len, "UHCI root hub");
3241                                 break;
3242                         }
3243                         break;
3244                 default:
3245                         err = USBD_IOERROR;
3246                         goto ret;
3247                 }
3248                 break;
3249         case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
3250                 if (len > 0) {
3251                         *(u_int8_t *)buf = 0;
3252                         totlen = 1;
3253                 }
3254                 break;
3255         case C(UR_GET_STATUS, UT_READ_DEVICE):
3256                 if (len > 1) {
3257                         USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
3258                         totlen = 2;
3259                 }
3260                 break;
3261         case C(UR_GET_STATUS, UT_READ_INTERFACE):
3262         case C(UR_GET_STATUS, UT_READ_ENDPOINT):
3263                 if (len > 1) {
3264                         USETW(((usb_status_t *)buf)->wStatus, 0);
3265                         totlen = 2;
3266                 }
3267                 break;
3268         case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
3269                 if (value >= USB_MAX_DEVICES) {
3270                         err = USBD_IOERROR;
3271                         goto ret;
3272                 }
3273                 sc->sc_addr = value;
3274                 break;
3275         case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
3276                 if (value != 0 && value != 1) {
3277                         err = USBD_IOERROR;
3278                         goto ret;
3279                 }
3280                 sc->sc_conf = value;
3281                 break;
3282         case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
3283                 break;
3284         case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
3285         case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
3286         case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
3287                 err = USBD_IOERROR;
3288                 goto ret;
3289         case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
3290                 break;
3291         case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
3292                 break;
3293         /* Hub requests */
3294         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
3295                 break;
3296         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
3297                 DPRINTFN(3, ("uhci_root_ctrl_control: UR_CLEAR_PORT_FEATURE "
3298                              "port=%d feature=%d\n",
3299                              index, value));
3300                 if (index == 1)
3301                         port = UHCI_PORTSC1;
3302                 else if (index == 2)
3303                         port = UHCI_PORTSC2;
3304                 else {
3305                         err = USBD_IOERROR;
3306                         goto ret;
3307                 }
3308                 switch(value) {
3309                 case UHF_PORT_ENABLE:
3310                         x = URWMASK(UREAD2(sc, port));
3311                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PE);
3312                         break;
3313                 case UHF_PORT_SUSPEND:
3314                         x = URWMASK(UREAD2(sc, port));
3315                         UWRITE2(sc, port, x & ~UHCI_PORTSC_SUSP);
3316                         break;
3317                 case UHF_PORT_RESET:
3318                         x = URWMASK(UREAD2(sc, port));
3319                         UWRITE2(sc, port, x & ~UHCI_PORTSC_PR);
3320                         break;
3321                 case UHF_C_PORT_CONNECTION:
3322                         x = URWMASK(UREAD2(sc, port));
3323                         UWRITE2(sc, port, x | UHCI_PORTSC_CSC);
3324                         break;
3325                 case UHF_C_PORT_ENABLE:
3326                         x = URWMASK(UREAD2(sc, port));
3327                         UWRITE2(sc, port, x | UHCI_PORTSC_POEDC);
3328                         break;
3329                 case UHF_C_PORT_OVER_CURRENT:
3330                         x = URWMASK(UREAD2(sc, port));
3331                         UWRITE2(sc, port, x | UHCI_PORTSC_OCIC);
3332                         break;
3333                 case UHF_C_PORT_RESET:
3334                         sc->sc_isreset = 0;
3335                         err = USBD_NORMAL_COMPLETION;
3336                         goto ret;
3337                 case UHF_PORT_CONNECTION:
3338                 case UHF_PORT_OVER_CURRENT:
3339                 case UHF_PORT_POWER:
3340                 case UHF_PORT_LOW_SPEED:
3341                 case UHF_C_PORT_SUSPEND:
3342                 default:
3343                         err = USBD_IOERROR;
3344                         goto ret;
3345                 }
3346                 break;
3347         case C(UR_GET_BUS_STATE, UT_READ_CLASS_OTHER):
3348                 if (index == 1)
3349                         port = UHCI_PORTSC1;
3350                 else if (index == 2)
3351                         port = UHCI_PORTSC2;
3352                 else {
3353                         err = USBD_IOERROR;
3354                         goto ret;
3355                 }
3356                 if (len > 0) {
3357                         *(u_int8_t *)buf =
3358                                 (UREAD2(sc, port) & UHCI_PORTSC_LS) >>
3359                                 UHCI_PORTSC_LS_SHIFT;
3360                         totlen = 1;
3361                 }
3362                 break;
3363         case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
3364                 if ((value & 0xff) != 0) {
3365                         err = USBD_IOERROR;
3366                         goto ret;
3367                 }
3368                 l = min(len, USB_HUB_DESCRIPTOR_SIZE);
3369                 totlen = l;
3370                 memcpy(buf, &uhci_hubd_piix, l);
3371                 break;
3372         case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
3373                 if (len != 4) {
3374                         err = USBD_IOERROR;
3375                         goto ret;
3376                 }
3377                 memset(buf, 0, len);
3378                 totlen = len;
3379                 break;
3380         case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
3381                 if (index == 1)
3382                         port = UHCI_PORTSC1;
3383                 else if (index == 2)
3384                         port = UHCI_PORTSC2;
3385                 else {
3386                         err = USBD_IOERROR;
3387                         goto ret;
3388                 }
3389                 if (len != 4) {
3390                         err = USBD_IOERROR;
3391                         goto ret;
3392                 }
3393                 x = UREAD2(sc, port);
3394                 status = change = 0;
3395                 if (x & UHCI_PORTSC_CCS)
3396                         status |= UPS_CURRENT_CONNECT_STATUS;
3397                 if (x & UHCI_PORTSC_CSC)
3398                         change |= UPS_C_CONNECT_STATUS;
3399                 if (x & UHCI_PORTSC_PE)
3400                         status |= UPS_PORT_ENABLED;
3401                 if (x & UHCI_PORTSC_POEDC)
3402                         change |= UPS_C_PORT_ENABLED;
3403                 if (x & UHCI_PORTSC_OCI)
3404                         status |= UPS_OVERCURRENT_INDICATOR;
3405                 if (x & UHCI_PORTSC_OCIC)
3406                         change |= UPS_C_OVERCURRENT_INDICATOR;
3407                 if (x & UHCI_PORTSC_SUSP)
3408                         status |= UPS_SUSPEND;
3409                 if (x & UHCI_PORTSC_LSDA)
3410                         status |= UPS_LOW_SPEED;
3411                 status |= UPS_PORT_POWER;
3412                 if (sc->sc_isreset)
3413                         change |= UPS_C_PORT_RESET;
3414                 USETW(ps.wPortStatus, status);
3415                 USETW(ps.wPortChange, change);
3416                 l = min(len, sizeof ps);
3417                 memcpy(buf, &ps, l);
3418                 totlen = l;
3419                 break;
3420         case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
3421                 err = USBD_IOERROR;
3422                 goto ret;
3423         case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
3424                 break;
3425         case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
3426                 if (index == 1)
3427                         port = UHCI_PORTSC1;
3428                 else if (index == 2)
3429                         port = UHCI_PORTSC2;
3430                 else {
3431                         err = USBD_IOERROR;
3432                         goto ret;
3433                 }
3434                 switch(value) {
3435                 case UHF_PORT_ENABLE:
3436                         x = URWMASK(UREAD2(sc, port));
3437                         UWRITE2(sc, port, x | UHCI_PORTSC_PE);
3438                         break;
3439                 case UHF_PORT_SUSPEND:
3440                         x = URWMASK(UREAD2(sc, port));
3441                         UWRITE2(sc, port, x | UHCI_PORTSC_SUSP);
3442                         break;
3443                 case UHF_PORT_RESET:
3444                         err = uhci_portreset(sc, index);
3445                         goto ret;
3446                 case UHF_PORT_POWER:
3447                         /* Pretend we turned on power */
3448                         err = USBD_NORMAL_COMPLETION;
3449                         goto ret;
3450                 case UHF_C_PORT_CONNECTION:
3451                 case UHF_C_PORT_ENABLE:
3452                 case UHF_C_PORT_OVER_CURRENT:
3453                 case UHF_PORT_CONNECTION:
3454                 case UHF_PORT_OVER_CURRENT:
3455                 case UHF_PORT_LOW_SPEED:
3456                 case UHF_C_PORT_SUSPEND:
3457                 case UHF_C_PORT_RESET:
3458                 default:
3459                         err = USBD_IOERROR;
3460                         goto ret;
3461                 }
3462                 break;
3463         default:
3464                 err = USBD_IOERROR;
3465                 goto ret;
3466         }
3467         xfer->actlen = totlen;
3468         err = USBD_NORMAL_COMPLETION;
3469  ret:
3470         xfer->status = err;
3471         crit_enter();
3472         usb_transfer_complete(xfer);
3473         crit_exit();
3474         return (USBD_IN_PROGRESS);
3475 }
3476
3477 /* Abort a root control request. */
3478 void
3479 uhci_root_ctrl_abort(usbd_xfer_handle xfer)
3480 {
3481         /* Nothing to do, all transfers are synchronous. */
3482 }
3483
3484 /* Close the root pipe. */
3485 void
3486 uhci_root_ctrl_close(usbd_pipe_handle pipe)
3487 {
3488         DPRINTF(("uhci_root_ctrl_close\n"));
3489 }
3490
3491 /* Abort a root interrupt request. */
3492 void
3493 uhci_root_intr_abort(usbd_xfer_handle xfer)
3494 {
3495         uhci_softc_t *sc = (uhci_softc_t *)xfer->pipe->device->bus;
3496
3497         usb_uncallout(sc->sc_poll_handle, uhci_poll_hub, xfer);
3498         sc->sc_intr_xfer = NULL;
3499
3500         if (xfer->pipe->intrxfer == xfer) {
3501                 DPRINTF(("uhci_root_intr_abort: remove\n"));
3502                 xfer->pipe->intrxfer = 0;
3503         }
3504         xfer->status = USBD_CANCELLED;
3505 #ifdef DIAGNOSTIC
3506         UXFER(xfer)->iinfo.isdone = 1;
3507 #endif
3508         usb_transfer_complete(xfer);
3509 }
3510
3511 usbd_status
3512 uhci_root_intr_transfer(usbd_xfer_handle xfer)
3513 {
3514         usbd_status err;
3515
3516         /* Insert last in queue. */
3517         err = usb_insert_transfer(xfer);
3518         if (err)
3519                 return (err);
3520
3521         /*
3522          * Pipe isn't running (otherwise err would be USBD_INPROG),
3523          * so start it first.
3524          */
3525         return (uhci_root_intr_start(SIMPLEQ_FIRST(&xfer->pipe->queue)));
3526 }
3527
3528 /* Start a transfer on the root interrupt pipe */
3529 usbd_status
3530 uhci_root_intr_start(usbd_xfer_handle xfer)
3531 {
3532         usbd_pipe_handle pipe = xfer->pipe;
3533         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3534
3535         DPRINTFN(3, ("uhci_root_intr_start: xfer=%p len=%d flags=%d\n",
3536                      xfer, xfer->length, xfer->flags));
3537
3538         if (sc->sc_dying)
3539                 return (USBD_IOERROR);
3540
3541         sc->sc_ival = MS_TO_TICKS(xfer->pipe->endpoint->edesc->bInterval);
3542         usb_callout(sc->sc_poll_handle, sc->sc_ival, uhci_poll_hub, xfer);
3543         sc->sc_intr_xfer = xfer;
3544         return (USBD_IN_PROGRESS);
3545 }
3546
3547 /* Close the root interrupt pipe. */
3548 void
3549 uhci_root_intr_close(usbd_pipe_handle pipe)
3550 {
3551         uhci_softc_t *sc = (uhci_softc_t *)pipe->device->bus;
3552
3553         usb_uncallout(sc->sc_poll_handle, uhci_poll_hub, sc->sc_intr_xfer);
3554         sc->sc_intr_xfer = NULL;
3555         DPRINTF(("uhci_root_intr_close\n"));
3556 }