d9e8fc01534aa8360cb0f0e181f469dea0f59cc4
[dragonfly.git] / sys / bus / usb / ohci.c
1 /*      $NetBSD: ohci.c,v 1.138 2003/02/08 03:32:50 ichiro Exp $        */
2 /*      $FreeBSD: src/sys/dev/usb/ohci.c,v 1.154.2.4 2006/06/26 00:31:25 iedowse Exp $  */
3 /*      $DragonFly: src/sys/bus/usb/ohci.c,v 1.22 2007/06/28 13:55:12 hasso Exp $       */
4
5 /* Also, already ported:
6  *      $NetBSD: ohci.c,v 1.140 2003/05/13 04:42:00 gson Exp $
7  *      $NetBSD: ohci.c,v 1.141 2003/09/10 20:08:29 mycroft Exp $
8  *      $NetBSD: ohci.c,v 1.142 2003/10/11 03:04:26 toshii Exp $
9  *      $NetBSD: ohci.c,v 1.143 2003/10/18 04:50:35 simonb Exp $
10  *      $NetBSD: ohci.c,v 1.144 2003/11/23 19:18:06 augustss Exp $
11  *      $NetBSD: ohci.c,v 1.145 2003/11/23 19:20:25 augustss Exp $
12  *      $NetBSD: ohci.c,v 1.146 2003/12/29 08:17:10 toshii Exp $
13  *      $NetBSD: ohci.c,v 1.147 2004/06/22 07:20:35 mycroft Exp $
14  *      $NetBSD: ohci.c,v 1.148 2004/06/22 18:27:46 mycroft Exp $
15  */
16
17 /*
18  * Copyright (c) 1998 The NetBSD Foundation, Inc.
19  * All rights reserved.
20  *
21  * This code is derived from software contributed to The NetBSD Foundation
22  * by Lennart Augustsson (lennart@augustsson.net) at
23  * Carlstedt Research & Technology.
24  *
25  * Redistribution and use in source and binary forms, with or without
26  * modification, are permitted provided that the following conditions
27  * are met:
28  * 1. Redistributions of source code must retain the above copyright
29  *    notice, this list of conditions and the following disclaimer.
30  * 2. Redistributions in binary form must reproduce the above copyright
31  *    notice, this list of conditions and the following disclaimer in the
32  *    documentation and/or other materials provided with the distribution.
33  * 3. All advertising materials mentioning features or use of this software
34  *    must display the following acknowledgement:
35  *        This product includes software developed by the NetBSD
36  *        Foundation, Inc. and its contributors.
37  * 4. Neither the name of The NetBSD Foundation nor the names of its
38  *    contributors may be used to endorse or promote products derived
39  *    from this software without specific prior written permission.
40  *
41  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
42  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
43  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
44  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
45  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
46  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
47  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
48  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
49  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
51  * POSSIBILITY OF SUCH DAMAGE.
52  */
53
54 /*
55  * USB Open Host Controller driver.
56  *
57  * OHCI spec: http://www.compaq.com/productinfo/development/openhci.html
58  * USB spec: http://www.usb.org/developers/docs/usbspec.zip
59  */
60
61 #include <sys/param.h>
62 #include <sys/systm.h>
63 #include <sys/malloc.h>
64 #include <sys/kernel.h>
65 #include <sys/endian.h>
66 #include <sys/module.h>
67 #include <sys/bus.h>
68 #if defined(DIAGNOSTIC) && defined(__i386__)
69 #include <machine/cpu.h>
70 #endif
71 #include <sys/proc.h>
72 #include <sys/queue.h>
73 #include <sys/sysctl.h>
74 #include <sys/thread2.h>
75
76 #include <machine/endian.h>
77
78 #include <bus/usb/usb.h>
79 #include <bus/usb/usbdi.h>
80 #include <bus/usb/usbdivar.h>
81 #include <bus/usb/usb_mem.h>
82 #include <bus/usb/usb_quirks.h>
83
84 #include <bus/usb/ohcireg.h>
85 #include <bus/usb/ohcivar.h>
86
87 #define delay(d)                DELAY(d)
88
89 #ifdef USB_DEBUG
90 #define DPRINTF(x)      if (ohcidebug) kprintf x
91 #define DPRINTFN(n,x)   if (ohcidebug>(n)) kprintf x
92 int ohcidebug = 0;
93 SYSCTL_NODE(_hw_usb, OID_AUTO, ohci, CTLFLAG_RW, 0, "USB ohci");
94 SYSCTL_INT(_hw_usb_ohci, OID_AUTO, debug, CTLFLAG_RW,
95            &ohcidebug, 0, "ohci debug level");
96 #define bitmask_snprintf(q,f,b,l) ksnprintf((b), (l), "%b", (q), (f))
97 #else
98 #define DPRINTF(x)
99 #define DPRINTFN(n,x)
100 #endif
101
102 struct ohci_pipe;
103
104 static ohci_soft_ed_t  *ohci_alloc_sed(ohci_softc_t *);
105 static void             ohci_free_sed(ohci_softc_t *, ohci_soft_ed_t *);
106
107 static ohci_soft_td_t  *ohci_alloc_std(ohci_softc_t *);
108 static void             ohci_free_std(ohci_softc_t *, ohci_soft_td_t *);
109
110 static ohci_soft_itd_t *ohci_alloc_sitd(ohci_softc_t *);
111 static void             ohci_free_sitd(ohci_softc_t *,ohci_soft_itd_t *);
112
113 #if 0
114 static void             ohci_free_std_chain(ohci_softc_t *, ohci_soft_td_t *,
115                                             ohci_soft_td_t *);
116 #endif
117 static usbd_status      ohci_alloc_std_chain(struct ohci_pipe *,
118                             ohci_softc_t *, int, int, usbd_xfer_handle,
119                             ohci_soft_td_t *, ohci_soft_td_t **);
120
121 static usbd_status      ohci_open(usbd_pipe_handle);
122 static void             ohci_poll(struct usbd_bus *);
123 static void             ohci_softintr(void *);
124 static void             ohci_waitintr(ohci_softc_t *, usbd_xfer_handle);
125 static void             ohci_add_done(ohci_softc_t *, ohci_physaddr_t);
126 static void             ohci_rhsc(ohci_softc_t *, usbd_xfer_handle);
127
128 static usbd_status      ohci_device_request(usbd_xfer_handle xfer);
129 static void             ohci_add_ed(ohci_soft_ed_t *, ohci_soft_ed_t *);
130 static void             ohci_rem_ed(ohci_soft_ed_t *, ohci_soft_ed_t *);
131 static void             ohci_hash_add_td(ohci_softc_t *, ohci_soft_td_t *);
132 static void             ohci_hash_rem_td(ohci_softc_t *, ohci_soft_td_t *);
133 static ohci_soft_td_t  *ohci_hash_find_td(ohci_softc_t *, ohci_physaddr_t);
134 static void             ohci_hash_add_itd(ohci_softc_t *, ohci_soft_itd_t *);
135 static void             ohci_hash_rem_itd(ohci_softc_t *, ohci_soft_itd_t *);
136 static ohci_soft_itd_t *ohci_hash_find_itd(ohci_softc_t *, ohci_physaddr_t);
137
138 static usbd_status      ohci_setup_isoc(usbd_pipe_handle pipe);
139 static void             ohci_device_isoc_enter(usbd_xfer_handle);
140
141 static usbd_status      ohci_allocm(struct usbd_bus *, usb_dma_t *, u_int32_t);
142 static void             ohci_freem(struct usbd_bus *, usb_dma_t *);
143
144 static usbd_xfer_handle ohci_allocx(struct usbd_bus *);
145 static void             ohci_freex(struct usbd_bus *, usbd_xfer_handle);
146
147 static usbd_status      ohci_root_ctrl_transfer(usbd_xfer_handle);
148 static usbd_status      ohci_root_ctrl_start(usbd_xfer_handle);
149 static void             ohci_root_ctrl_abort(usbd_xfer_handle);
150 static void             ohci_root_ctrl_close(usbd_pipe_handle);
151 static void             ohci_root_ctrl_done(usbd_xfer_handle);
152
153 static usbd_status      ohci_root_intr_transfer(usbd_xfer_handle);
154 static usbd_status      ohci_root_intr_start(usbd_xfer_handle);
155 static void             ohci_root_intr_abort(usbd_xfer_handle);
156 static void             ohci_root_intr_close(usbd_pipe_handle);
157 static void             ohci_root_intr_done(usbd_xfer_handle);
158
159 static usbd_status      ohci_device_ctrl_transfer(usbd_xfer_handle);
160 static usbd_status      ohci_device_ctrl_start(usbd_xfer_handle);
161 static void             ohci_device_ctrl_abort(usbd_xfer_handle);
162 static void             ohci_device_ctrl_close(usbd_pipe_handle);
163 static void             ohci_device_ctrl_done(usbd_xfer_handle);
164
165 static usbd_status      ohci_device_bulk_transfer(usbd_xfer_handle);
166 static usbd_status      ohci_device_bulk_start(usbd_xfer_handle);
167 static void             ohci_device_bulk_abort(usbd_xfer_handle);
168 static void             ohci_device_bulk_close(usbd_pipe_handle);
169 static void             ohci_device_bulk_done(usbd_xfer_handle);
170
171 static usbd_status      ohci_device_intr_transfer(usbd_xfer_handle);
172 static usbd_status      ohci_device_intr_start(usbd_xfer_handle);
173 static void             ohci_device_intr_abort(usbd_xfer_handle);
174 static void             ohci_device_intr_close(usbd_pipe_handle);
175 static void             ohci_device_intr_done(usbd_xfer_handle);
176
177 static usbd_status      ohci_device_isoc_transfer(usbd_xfer_handle);
178 static usbd_status      ohci_device_isoc_start(usbd_xfer_handle);
179 static void             ohci_device_isoc_abort(usbd_xfer_handle);
180 static void             ohci_device_isoc_close(usbd_pipe_handle);
181 static void             ohci_device_isoc_done(usbd_xfer_handle);
182
183 static usbd_status      ohci_device_setintr(ohci_softc_t *sc,
184                             struct ohci_pipe *pipe, int ival);
185
186 static int              ohci_str(usb_string_descriptor_t *, int, const char *);
187
188 static void             ohci_timeout(void *);
189 static void             ohci_timeout_task(void *);
190 static void             ohci_rhsc_able(ohci_softc_t *, int);
191 static void             ohci_rhsc_enable(void *);
192
193 static void             ohci_close_pipe(usbd_pipe_handle, ohci_soft_ed_t *);
194 static void             ohci_abort_xfer(usbd_xfer_handle, usbd_status);
195
196 static void             ohci_device_clear_toggle(usbd_pipe_handle pipe);
197 static void             ohci_noop(usbd_pipe_handle pipe);
198
199 static usbd_status ohci_controller_init(ohci_softc_t *sc);
200
201 #ifdef USB_DEBUG
202 static void             ohci_dumpregs(ohci_softc_t *);
203 static void             ohci_dump_tds(ohci_soft_td_t *);
204 static void             ohci_dump_td(ohci_soft_td_t *);
205 static void             ohci_dump_ed(ohci_soft_ed_t *);
206 static void             ohci_dump_itd(ohci_soft_itd_t *);
207 static void             ohci_dump_itds(ohci_soft_itd_t *);
208 #endif
209
210 #define OBARR(sc) bus_space_barrier((sc)->iot, (sc)->ioh, 0, (sc)->sc_size, \
211                         BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE)
212 #define OWRITE1(sc, r, x) \
213  do { OBARR(sc); bus_space_write_1((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
214 #define OWRITE2(sc, r, x) \
215  do { OBARR(sc); bus_space_write_2((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
216 #define OWRITE4(sc, r, x) \
217  do { OBARR(sc); bus_space_write_4((sc)->iot, (sc)->ioh, (r), (x)); } while (0)
218 #define OREAD1(sc, r) (OBARR(sc), bus_space_read_1((sc)->iot, (sc)->ioh, (r)))
219 #define OREAD2(sc, r) (OBARR(sc), bus_space_read_2((sc)->iot, (sc)->ioh, (r)))
220 #define OREAD4(sc, r) (OBARR(sc), bus_space_read_4((sc)->iot, (sc)->ioh, (r)))
221
222 /* Reverse the bits in a value 0 .. 31 */
223 static u_int8_t revbits[OHCI_NO_INTRS] =
224   { 0x00, 0x10, 0x08, 0x18, 0x04, 0x14, 0x0c, 0x1c,
225     0x02, 0x12, 0x0a, 0x1a, 0x06, 0x16, 0x0e, 0x1e,
226     0x01, 0x11, 0x09, 0x19, 0x05, 0x15, 0x0d, 0x1d,
227     0x03, 0x13, 0x0b, 0x1b, 0x07, 0x17, 0x0f, 0x1f };
228
229 struct ohci_pipe {
230         struct usbd_pipe pipe;
231         ohci_soft_ed_t *sed;
232         u_int32_t aborting;
233         union {
234                 ohci_soft_td_t *td;
235                 ohci_soft_itd_t *itd;
236         } tail;
237         /* Info needed for different pipe kinds. */
238         union {
239                 /* Control pipe */
240                 struct {
241                         usb_dma_t reqdma;
242                         u_int length;
243                         ohci_soft_td_t *setup, *data, *stat;
244                 } ctl;
245                 /* Interrupt pipe */
246                 struct {
247                         int nslots;
248                         int pos;
249                 } intr;
250                 /* Bulk pipe */
251                 struct {
252                         u_int length;
253                         int isread;
254                 } bulk;
255                 /* Iso pipe */
256                 struct iso {
257                         int next, inuse;
258                 } iso;
259         } u;
260 };
261
262 #define OHCI_INTR_ENDPT 1
263
264 static struct usbd_bus_methods ohci_bus_methods = {
265         ohci_open,
266         ohci_softintr,
267         ohci_poll,
268         ohci_allocm,
269         ohci_freem,
270         ohci_allocx,
271         ohci_freex,
272 };
273
274 static struct usbd_pipe_methods ohci_root_ctrl_methods = {
275         ohci_root_ctrl_transfer,
276         ohci_root_ctrl_start,
277         ohci_root_ctrl_abort,
278         ohci_root_ctrl_close,
279         ohci_noop,
280         ohci_root_ctrl_done,
281 };
282
283 static struct usbd_pipe_methods ohci_root_intr_methods = {
284         ohci_root_intr_transfer,
285         ohci_root_intr_start,
286         ohci_root_intr_abort,
287         ohci_root_intr_close,
288         ohci_noop,
289         ohci_root_intr_done,
290 };
291
292 static struct usbd_pipe_methods ohci_device_ctrl_methods = {
293         ohci_device_ctrl_transfer,
294         ohci_device_ctrl_start,
295         ohci_device_ctrl_abort,
296         ohci_device_ctrl_close,
297         ohci_noop,
298         ohci_device_ctrl_done,
299 };
300
301 static struct usbd_pipe_methods ohci_device_intr_methods = {
302         ohci_device_intr_transfer,
303         ohci_device_intr_start,
304         ohci_device_intr_abort,
305         ohci_device_intr_close,
306         ohci_device_clear_toggle,
307         ohci_device_intr_done,
308 };
309
310 static struct usbd_pipe_methods ohci_device_bulk_methods = {
311         ohci_device_bulk_transfer,
312         ohci_device_bulk_start,
313         ohci_device_bulk_abort,
314         ohci_device_bulk_close,
315         ohci_device_clear_toggle,
316         ohci_device_bulk_done,
317 };
318
319 static struct usbd_pipe_methods ohci_device_isoc_methods = {
320         ohci_device_isoc_transfer,
321         ohci_device_isoc_start,
322         ohci_device_isoc_abort,
323         ohci_device_isoc_close,
324         ohci_noop,
325         ohci_device_isoc_done,
326 };
327
328 int
329 ohci_detach(struct ohci_softc *sc, int flags)
330 {
331         int i, rv = 0;
332
333         sc->sc_dying = 1;
334
335         usb_uncallout(sc->sc_tmo_rhsc, ohci_rhsc_enable, sc);
336
337         OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
338         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
339
340         usb_delay_ms(&sc->sc_bus, 300); /* XXX let stray task complete */
341
342         for (i = 0; i < OHCI_NO_EDS; i++)
343                 ohci_free_sed(sc, sc->sc_eds[i]);
344         ohci_free_sed(sc, sc->sc_isoc_head);
345         ohci_free_sed(sc, sc->sc_bulk_head);
346         ohci_free_sed(sc, sc->sc_ctrl_head);
347         usb_freemem(&sc->sc_bus, &sc->sc_hccadma);
348
349         return (rv);
350 }
351
352 ohci_soft_ed_t *
353 ohci_alloc_sed(ohci_softc_t *sc)
354 {
355         ohci_soft_ed_t *sed;
356         usbd_status err;
357         int i, offs;
358         usb_dma_t dma;
359
360         if (sc->sc_freeeds == NULL) {
361                 DPRINTFN(2, ("ohci_alloc_sed: allocating chunk\n"));
362                 err = usb_allocmem(&sc->sc_bus, OHCI_SED_SIZE * OHCI_SED_CHUNK,
363                           OHCI_ED_ALIGN, &dma);
364                 if (err)
365                         return (NULL);
366                 for(i = 0; i < OHCI_SED_CHUNK; i++) {
367                         offs = i * OHCI_SED_SIZE;
368                         sed = KERNADDR(&dma, offs);
369                         sed->physaddr = DMAADDR(&dma, offs);
370                         sed->next = sc->sc_freeeds;
371                         sc->sc_freeeds = sed;
372                 }
373         }
374         sed = sc->sc_freeeds;
375         sc->sc_freeeds = sed->next;
376         memset(&sed->ed, 0, sizeof(ohci_ed_t));
377         sed->next = 0;
378         return (sed);
379 }
380
381 void
382 ohci_free_sed(ohci_softc_t *sc, ohci_soft_ed_t *sed)
383 {
384         sed->next = sc->sc_freeeds;
385         sc->sc_freeeds = sed;
386 }
387
388 ohci_soft_td_t *
389 ohci_alloc_std(ohci_softc_t *sc)
390 {
391         ohci_soft_td_t *std;
392         usbd_status err;
393         int i, offs;
394         usb_dma_t dma;
395
396         if (sc->sc_freetds == NULL) {
397                 DPRINTFN(2, ("ohci_alloc_std: allocating chunk\n"));
398                 err = usb_allocmem(&sc->sc_bus, OHCI_STD_SIZE * OHCI_STD_CHUNK,
399                           OHCI_TD_ALIGN, &dma);
400                 if (err)
401                         return (NULL);
402                 crit_enter();
403                 for(i = 0; i < OHCI_STD_CHUNK; i++) {
404                         offs = i * OHCI_STD_SIZE;
405                         std = KERNADDR(&dma, offs);
406                         std->physaddr = DMAADDR(&dma, offs);
407                         std->nexttd = sc->sc_freetds;
408                         sc->sc_freetds = std;
409                 }
410                 crit_exit();
411         }
412
413         crit_enter();
414         std = sc->sc_freetds;
415         sc->sc_freetds = std->nexttd;
416         memset(&std->td, 0, sizeof(ohci_td_t));
417         std->nexttd = NULL;
418         std->xfer = NULL;
419         ohci_hash_add_td(sc, std);
420         crit_exit();
421
422         return (std);
423 }
424
425 void
426 ohci_free_std(ohci_softc_t *sc, ohci_soft_td_t *std)
427 {
428         crit_enter();
429         ohci_hash_rem_td(sc, std);
430         std->nexttd = sc->sc_freetds;
431         sc->sc_freetds = std;
432         crit_exit();
433 }
434
435 usbd_status
436 ohci_alloc_std_chain(struct ohci_pipe *opipe, ohci_softc_t *sc,
437                      int alen, int rd, usbd_xfer_handle xfer,
438                      ohci_soft_td_t *sp, ohci_soft_td_t **ep)
439 {
440         ohci_soft_td_t *next, *cur;
441         ohci_physaddr_t dataphys;
442         u_int32_t tdflags;
443         int offset = 0;
444         int len, curlen;
445         usb_dma_t *dma = &xfer->dmabuf;
446         u_int16_t flags = xfer->flags;
447
448         DPRINTFN(alen < 4096,("ohci_alloc_std_chain: start len=%d\n", alen));
449
450         len = alen;
451         cur = sp;
452
453         tdflags = htole32(
454             (rd ? OHCI_TD_IN : OHCI_TD_OUT) |
455             (flags & USBD_SHORT_XFER_OK ? OHCI_TD_R : 0) |
456             OHCI_TD_NOCC | OHCI_TD_TOGGLE_CARRY | OHCI_TD_SET_DI(6));
457
458         for (;;) {
459                 next = ohci_alloc_std(sc);
460                 if (next == NULL)
461                         goto nomem;
462
463                 dataphys = DMAADDR(dma, offset);
464
465                 /*
466                  * The OHCI hardware can handle at most one 4k crossing.
467                  * XXX - currently we only allocate contigous buffers, but
468                  * the OHCI spec says: If during the data transfer the buffer
469                  * address contained in the HC's working copy of
470                  * CurrentBufferPointer crosses a 4K boundary, the upper 20
471                  * bits of Buffer End are copied to the working value of
472                  * CurrentBufferPointer causing the next buffer address to
473                  * be the 0th byte in the same 4K page that contains the
474                  * last byte of the buffer (the 4K boundary crossing may
475                  * occur within a data packet transfer.)
476                  *
477                  * If/when dma has multiple segments, this will need to
478                  * properly handle fragmenting TD's.
479                  * 
480                  * Note that if we are gathering data from multiple SMALL
481                  * segments, e.g. mbufs, we need to do special gymnastics,
482                  * e.g. bounce buffering or data aggregation,
483                  * BEFORE WE GET HERE because a bulk USB transfer must
484                  * consist of maximally sized packets right up to the end.
485                  * A shorter than maximal packet means that it is the end
486                  * of the transfer. If the data transfer length is a
487                  * multiple of the packet size, then a 0 byte
488                  * packet will be the signal of the end of transfer.
489                  * Since packets can't cross TDs this means that
490                  * each TD except the last one must cover an exact multiple
491                  * of the maximal packet length.
492                  */
493                 if (OHCI_PAGE_OFFSET(dataphys) + len <= (2 * OHCI_PAGE_SIZE)) {
494                         /* We can handle all that remains in this TD */
495                         curlen = len;
496                 } else {
497                         /* must use multiple TDs, fill as much as possible. */
498                         curlen = 2 * OHCI_PAGE_SIZE -
499                                  OHCI_PAGE_OFFSET(dataphys);
500                         /* the length must be a multiple of the max size */
501                         curlen -= curlen %
502                             UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize);
503                         KASSERT((curlen != 0), ("ohci_alloc_std: curlen == 0"));
504                 }
505                 DPRINTFN(4,("ohci_alloc_std_chain: dataphys=0x%08x "
506                             "len=%d curlen=%d\n",
507                             dataphys, len, curlen));
508                 len -= curlen;
509
510                 cur->td.td_flags = tdflags;
511                 cur->td.td_cbp = htole32(dataphys);
512                 cur->nexttd = next;
513                 cur->td.td_nexttd = htole32(next->physaddr);
514                 cur->td.td_be = htole32(DMAADDR(dma, offset + curlen - 1));
515                 cur->len = curlen;
516                 cur->flags = OHCI_ADD_LEN;
517                 cur->xfer = xfer;
518                 DPRINTFN(10,("ohci_alloc_std_chain: cbp=0x%08x be=0x%08x\n",
519                             dataphys, dataphys + curlen - 1));
520                 if (len == 0)
521                         break;
522                 if (len < 0)
523                         panic("Length went negative: %d curlen %d dma %p offset %08x", len, curlen, dma, (int)0);
524
525                 DPRINTFN(10,("ohci_alloc_std_chain: extend chain\n"));
526                 offset += curlen;
527                 cur = next;
528         }
529         if ((flags & USBD_FORCE_SHORT_XFER) &&
530             alen % UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize) == 0) {
531                 /* Force a 0 length transfer at the end. */
532
533                 cur = next;
534
535                 next = ohci_alloc_std(sc);
536                 if (next == NULL)
537                         goto nomem;
538
539                 cur->td.td_flags = tdflags;
540                 cur->td.td_cbp = 0; /* indicate 0 length packet */
541                 cur->nexttd = next;
542                 cur->td.td_nexttd = htole32(next->physaddr);
543                 cur->td.td_be = ~0;
544                 cur->len = 0;
545                 cur->flags = 0;
546                 cur->xfer = xfer;
547                 DPRINTFN(2,("ohci_alloc_std_chain: add 0 xfer\n"));
548         }
549         *ep = cur;
550
551         return (USBD_NORMAL_COMPLETION);
552
553  nomem:
554         /* XXX free chain */
555         return (USBD_NOMEM);
556 }
557
558 #if 0
559 static void
560 ohci_free_std_chain(ohci_softc_t *sc, ohci_soft_td_t *std,
561                     ohci_soft_td_t *stdend)
562 {
563         ohci_soft_td_t *p;
564
565         for (; std != stdend; std = p) {
566                 p = std->nexttd;
567                 ohci_free_std(sc, std);
568         }
569 }
570 #endif
571
572 ohci_soft_itd_t *
573 ohci_alloc_sitd(ohci_softc_t *sc)
574 {
575         ohci_soft_itd_t *sitd;
576         usbd_status err;
577         int i, offs;
578         usb_dma_t dma;
579
580         crit_enter();
581         if (sc->sc_freeitds == NULL) {
582                 DPRINTFN(2, ("ohci_alloc_sitd: allocating chunk\n"));
583                 crit_exit();
584                 err = usb_allocmem(&sc->sc_bus,
585                                    OHCI_SITD_SIZE * OHCI_SITD_CHUNK,
586                                    OHCI_ITD_ALIGN, &dma);
587                 if (err)
588                         return (NULL);
589                 crit_enter();
590                 for (i = 0; i < OHCI_SITD_CHUNK; i++) {
591                         offs = i * OHCI_SITD_SIZE;
592                         sitd = KERNADDR(&dma, offs);
593                         sitd->physaddr = DMAADDR(&dma, offs);
594                         sitd->nextitd = sc->sc_freeitds;
595                         sc->sc_freeitds = sitd;
596                 }
597         }
598         sitd = sc->sc_freeitds;
599         sc->sc_freeitds = sitd->nextitd;
600         memset(&sitd->itd, 0, sizeof(ohci_itd_t));
601         sitd->nextitd = NULL;
602         sitd->xfer = NULL;
603         ohci_hash_add_itd(sc, sitd);
604         crit_exit();
605
606 #ifdef DIAGNOSTIC
607         sitd->isdone = 0;
608 #endif
609
610         return (sitd);
611 }
612
613 void
614 ohci_free_sitd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
615 {
616         DPRINTFN(10,("ohci_free_sitd: sitd=%p\n", sitd));
617
618 #ifdef DIAGNOSTIC
619         if (!sitd->isdone) {
620                 panic("ohci_free_sitd: sitd=%p not done", sitd);
621                 return;
622         }
623         /* Warn double free */
624         sitd->isdone = 0;
625 #endif
626
627         crit_enter();
628         ohci_hash_rem_itd(sc, sitd);
629         sitd->nextitd = sc->sc_freeitds;
630         sc->sc_freeitds = sitd;
631         crit_exit();
632 }
633
634 usbd_status
635 ohci_init(ohci_softc_t *sc)
636 {
637         ohci_soft_ed_t *sed, *psed;
638         usbd_status err;
639         int i;
640         u_int32_t rev;
641
642         DPRINTF(("ohci_init: start\n"));
643         kprintf("%s:", device_get_nameunit(sc->sc_bus.bdev));
644         rev = OREAD4(sc, OHCI_REVISION);
645         kprintf(" OHCI version %d.%d%s\n", OHCI_REV_HI(rev), OHCI_REV_LO(rev),
646                OHCI_REV_LEGACY(rev) ? ", legacy support" : "");
647
648         if (OHCI_REV_HI(rev) != 1 || OHCI_REV_LO(rev) != 0) {
649                 kprintf("%s: unsupported OHCI revision\n",
650                        device_get_nameunit(sc->sc_bus.bdev));
651                 sc->sc_bus.usbrev = USBREV_UNKNOWN;
652                 return (USBD_INVAL);
653         }
654         sc->sc_bus.usbrev = USBREV_1_0;
655
656         for (i = 0; i < OHCI_HASH_SIZE; i++)
657                 LIST_INIT(&sc->sc_hash_tds[i]);
658         for (i = 0; i < OHCI_HASH_SIZE; i++)
659                 LIST_INIT(&sc->sc_hash_itds[i]);
660
661         STAILQ_INIT(&sc->sc_free_xfers);
662
663         /* XXX determine alignment by R/W */
664         /* Allocate the HCCA area. */
665         err = usb_allocmem(&sc->sc_bus, OHCI_HCCA_SIZE,
666                          OHCI_HCCA_ALIGN, &sc->sc_hccadma);
667         if (err)
668                 return (err);
669         sc->sc_hcca = KERNADDR(&sc->sc_hccadma, 0);
670         memset(sc->sc_hcca, 0, OHCI_HCCA_SIZE);
671
672         sc->sc_eintrs = OHCI_NORMAL_INTRS;
673
674         /* Allocate dummy ED that starts the control list. */
675         sc->sc_ctrl_head = ohci_alloc_sed(sc);
676         if (sc->sc_ctrl_head == NULL) {
677                 err = USBD_NOMEM;
678                 goto bad1;
679         }
680         sc->sc_ctrl_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
681
682         /* Allocate dummy ED that starts the bulk list. */
683         sc->sc_bulk_head = ohci_alloc_sed(sc);
684         if (sc->sc_bulk_head == NULL) {
685                 err = USBD_NOMEM;
686                 goto bad2;
687         }
688         sc->sc_bulk_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
689
690         /* Allocate dummy ED that starts the isochronous list. */
691         sc->sc_isoc_head = ohci_alloc_sed(sc);
692         if (sc->sc_isoc_head == NULL) {
693                 err = USBD_NOMEM;
694                 goto bad3;
695         }
696         sc->sc_isoc_head->ed.ed_flags |= htole32(OHCI_ED_SKIP);
697
698         /* Allocate all the dummy EDs that make up the interrupt tree. */
699         for (i = 0; i < OHCI_NO_EDS; i++) {
700                 sed = ohci_alloc_sed(sc);
701                 if (sed == NULL) {
702                         while (--i >= 0)
703                                 ohci_free_sed(sc, sc->sc_eds[i]);
704                         err = USBD_NOMEM;
705                         goto bad4;
706                 }
707                 /* All ED fields are set to 0. */
708                 sc->sc_eds[i] = sed;
709                 sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
710                 if (i != 0)
711                         psed = sc->sc_eds[(i-1) / 2];
712                 else
713                         psed= sc->sc_isoc_head;
714                 sed->next = psed;
715                 sed->ed.ed_nexted = htole32(psed->physaddr);
716         }
717         /*
718          * Fill HCCA interrupt table.  The bit reversal is to get
719          * the tree set up properly to spread the interrupts.
720          */
721         for (i = 0; i < OHCI_NO_INTRS; i++)
722                 sc->sc_hcca->hcca_interrupt_table[revbits[i]] =
723                     htole32(sc->sc_eds[OHCI_NO_EDS-OHCI_NO_INTRS+i]->physaddr);
724
725 #ifdef USB_DEBUG
726         if (ohcidebug > 15) {
727                 for (i = 0; i < OHCI_NO_EDS; i++) {
728                         kprintf("ed#%d ", i);
729                         ohci_dump_ed(sc->sc_eds[i]);
730                 }
731                 kprintf("iso ");
732                 ohci_dump_ed(sc->sc_isoc_head);
733         }
734 #endif
735
736         err = ohci_controller_init(sc);
737         if (err != USBD_NORMAL_COMPLETION)
738                 goto bad5;
739
740         /* Set up the bus struct. */
741         sc->sc_bus.methods = &ohci_bus_methods;
742         sc->sc_bus.pipe_size = sizeof(struct ohci_pipe);
743
744         usb_callout_init(sc->sc_tmo_rhsc);
745
746         return (USBD_NORMAL_COMPLETION);
747
748  bad5:
749         for (i = 0; i < OHCI_NO_EDS; i++)
750                 ohci_free_sed(sc, sc->sc_eds[i]);
751  bad4:
752         ohci_free_sed(sc, sc->sc_isoc_head);
753  bad3:
754         ohci_free_sed(sc, sc->sc_bulk_head);
755  bad2:
756         ohci_free_sed(sc, sc->sc_ctrl_head);
757  bad1:
758         usb_freemem(&sc->sc_bus, &sc->sc_hccadma);
759         return (err);
760 }
761
762 static usbd_status
763 ohci_controller_init(ohci_softc_t *sc)
764 {
765         int i;
766         u_int32_t s, ctl, ival, hcr, fm, per, desca;
767
768         /* Determine in what context we are running. */
769         ctl = OREAD4(sc, OHCI_CONTROL);
770         if (ctl & OHCI_IR) {
771                 /* SMM active, request change */
772                 DPRINTF(("ohci_init: SMM active, request owner change\n"));
773                 s = OREAD4(sc, OHCI_COMMAND_STATUS);
774                 OWRITE4(sc, OHCI_COMMAND_STATUS, s | OHCI_OCR);
775                 for (i = 0; i < 100 && (ctl & OHCI_IR); i++) {
776                         usb_delay_ms(&sc->sc_bus, 1);
777                         ctl = OREAD4(sc, OHCI_CONTROL);
778                 }
779                 if ((ctl & OHCI_IR) == 0) {
780                         kprintf("%s: SMM does not respond, resetting\n",
781                                device_get_nameunit(sc->sc_bus.bdev));
782                         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
783                         goto reset;
784                 }
785 #if 0
786 /* Don't bother trying to reuse the BIOS init, we'll reset it anyway. */
787         } else if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_RESET) {
788                 /* BIOS started controller. */
789                 DPRINTF(("ohci_init: BIOS active\n"));
790                 if ((ctl & OHCI_HCFS_MASK) != OHCI_HCFS_OPERATIONAL) {
791                         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_OPERATIONAL);
792                         usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
793                 }
794 #endif
795         } else {
796                 DPRINTF(("ohci_init: cold started\n"));
797         reset:
798                 /* Controller was cold started. */
799                 usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY);
800         }
801
802         /*
803          * This reset should not be necessary according to the OHCI spec, but
804          * without it some controllers do not start.
805          */
806         DPRINTF(("%s: resetting\n", device_get_nameunit(sc->sc_bus.bdev)));
807         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
808         usb_delay_ms(&sc->sc_bus, USB_BUS_RESET_DELAY);
809
810         /* We now own the host controller and the bus has been reset. */
811         ival = OHCI_GET_IVAL(OREAD4(sc, OHCI_FM_INTERVAL));
812
813         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_HCR); /* Reset HC */
814         /* Nominal time for a reset is 10 us. */
815         for (i = 0; i < 10; i++) {
816                 delay(10);
817                 hcr = OREAD4(sc, OHCI_COMMAND_STATUS) & OHCI_HCR;
818                 if (!hcr)
819                         break;
820         }
821         if (hcr) {
822                 kprintf("%s: reset timeout\n", device_get_nameunit(sc->sc_bus.bdev));
823                 return (USBD_IOERROR);
824         }
825 #ifdef USB_DEBUG
826         if (ohcidebug > 15)
827                 ohci_dumpregs(sc);
828 #endif
829
830         /* The controller is now in SUSPEND state, we have 2ms to finish. */
831
832         /* Set up HC registers. */
833         OWRITE4(sc, OHCI_HCCA, DMAADDR(&sc->sc_hccadma, 0));
834         OWRITE4(sc, OHCI_CONTROL_HEAD_ED, sc->sc_ctrl_head->physaddr);
835         OWRITE4(sc, OHCI_BULK_HEAD_ED, sc->sc_bulk_head->physaddr);
836         /* disable all interrupts and then switch on all desired interrupts */
837         OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
838         OWRITE4(sc, OHCI_INTERRUPT_ENABLE, sc->sc_eintrs | OHCI_MIE);
839         /* switch on desired functional features */
840         ctl = OREAD4(sc, OHCI_CONTROL);
841         ctl &= ~(OHCI_CBSR_MASK | OHCI_LES | OHCI_HCFS_MASK | OHCI_IR);
842         ctl |= OHCI_PLE | OHCI_IE | OHCI_CLE | OHCI_BLE |
843                 OHCI_RATIO_1_4 | OHCI_HCFS_OPERATIONAL;
844         /* And finally start it! */
845         OWRITE4(sc, OHCI_CONTROL, ctl);
846
847         /*
848          * The controller is now OPERATIONAL.  Set a some final
849          * registers that should be set earlier, but that the
850          * controller ignores when in the SUSPEND state.
851          */
852         fm = (OREAD4(sc, OHCI_FM_INTERVAL) & OHCI_FIT) ^ OHCI_FIT;
853         fm |= OHCI_FSMPS(ival) | ival;
854         OWRITE4(sc, OHCI_FM_INTERVAL, fm);
855         per = OHCI_PERIODIC(ival); /* 90% periodic */
856         OWRITE4(sc, OHCI_PERIODIC_START, per);
857
858         /* Fiddle the No OverCurrent Protection bit to avoid chip bug. */
859         desca = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
860         OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca | OHCI_NOCP);
861         OWRITE4(sc, OHCI_RH_STATUS, OHCI_LPSC); /* Enable port power */
862         usb_delay_ms(&sc->sc_bus, OHCI_ENABLE_POWER_DELAY);
863         OWRITE4(sc, OHCI_RH_DESCRIPTOR_A, desca);
864
865         /*
866          * The AMD756 requires a delay before re-reading the register,
867          * otherwise it will occasionally report 0 ports.
868          */
869         sc->sc_noport = 0;
870         for (i = 0; i < 10 && sc->sc_noport == 0; i++) {
871                 usb_delay_ms(&sc->sc_bus, OHCI_READ_DESC_DELAY);
872                 sc->sc_noport = OHCI_GET_NDP(OREAD4(sc, OHCI_RH_DESCRIPTOR_A));
873         }
874
875 #ifdef USB_DEBUG
876         if (ohcidebug > 5)
877                 ohci_dumpregs(sc);
878 #endif
879         return (USBD_NORMAL_COMPLETION);
880 }
881
882 usbd_status
883 ohci_allocm(struct usbd_bus *bus, usb_dma_t *dma, u_int32_t size)
884 {
885         return (usb_allocmem(bus, size, 0, dma));
886 }
887
888 void
889 ohci_freem(struct usbd_bus *bus, usb_dma_t *dma)
890 {
891         usb_freemem(bus, dma);
892 }
893
894 usbd_xfer_handle
895 ohci_allocx(struct usbd_bus *bus)
896 {
897         struct ohci_softc *sc = (struct ohci_softc *)bus;
898         usbd_xfer_handle xfer;
899
900         xfer = STAILQ_FIRST(&sc->sc_free_xfers);
901         if (xfer != NULL) {
902                 STAILQ_REMOVE_HEAD(&sc->sc_free_xfers, next);
903 #ifdef DIAGNOSTIC
904                 if (xfer->busy_free != XFER_FREE) {
905                         kprintf("ohci_allocx: xfer=%p not free, 0x%08x\n", xfer,
906                                xfer->busy_free);
907                 }
908 #endif
909         } else {
910                 xfer = kmalloc(sizeof(struct ohci_xfer), M_USB, M_INTWAIT);
911         }
912         if (xfer != NULL) {
913                 memset(xfer, 0, sizeof (struct ohci_xfer));
914                 usb_init_task(&OXFER(xfer)->abort_task, ohci_timeout_task,
915                     xfer);
916                 OXFER(xfer)->ohci_xfer_flags = 0;
917 #ifdef DIAGNOSTIC
918                 xfer->busy_free = XFER_BUSY;
919 #endif
920         }
921         return (xfer);
922 }
923
924 void
925 ohci_freex(struct usbd_bus *bus, usbd_xfer_handle xfer)
926 {
927         struct ohci_softc *sc = (struct ohci_softc *)bus;
928         struct ohci_xfer *oxfer = (struct ohci_xfer *)xfer;
929         ohci_soft_itd_t *sitd;
930
931         if (oxfer->ohci_xfer_flags & OHCI_ISOC_DIRTY) {
932                 crit_enter();
933                 for (sitd = xfer->hcpriv; sitd != NULL && sitd->xfer == xfer;
934                      sitd = sitd->nextitd)
935                         ohci_free_sitd(sc, sitd);
936                 crit_exit();
937         }
938
939 #ifdef DIAGNOSTIC
940         if (xfer->busy_free != XFER_BUSY) {
941                 kprintf("ohci_freex: xfer=%p not busy, 0x%08x\n", xfer,
942                        xfer->busy_free);
943                 return;
944         }
945         xfer->busy_free = XFER_FREE;
946 #endif
947         STAILQ_INSERT_HEAD(&sc->sc_free_xfers, xfer, next);
948 }
949
950 /*
951  * Shut down the controller when the system is going down.
952  */
953 void
954 ohci_shutdown(void *v)
955 {
956         ohci_softc_t *sc = v;
957
958         DPRINTF(("ohci_shutdown: stopping the HC\n"));
959         OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
960 }
961
962 /*
963  * Handle suspend/resume.
964  *
965  * We need to switch to polling mode here, because this routine is
966  * called from an intterupt context.  This is all right since we
967  * are almost suspended anyway.
968  */
969 void
970 ohci_power(int why, void *v)
971 {
972         ohci_softc_t *sc = v;
973         u_int32_t ctl;
974
975 #ifdef USB_DEBUG
976         DPRINTF(("ohci_power: sc=%p, why=%d\n", sc, why));
977         ohci_dumpregs(sc);
978 #endif
979
980         crit_enter();
981         if (why != PWR_RESUME) {
982                 sc->sc_bus.use_polling++;
983                 ctl = OREAD4(sc, OHCI_CONTROL) & ~OHCI_HCFS_MASK;
984                 if (sc->sc_control == 0) {
985                         /*
986                          * Preserve register values, in case that APM BIOS
987                          * does not recover them.
988                          */
989                         sc->sc_control = ctl;
990                         sc->sc_intre = OREAD4(sc, OHCI_INTERRUPT_ENABLE);
991                 }
992                 ctl |= OHCI_HCFS_SUSPEND;
993                 OWRITE4(sc, OHCI_CONTROL, ctl);
994                 usb_delay_ms(&sc->sc_bus, USB_RESUME_WAIT);
995                 sc->sc_bus.use_polling--;
996         } else {
997                 sc->sc_bus.use_polling++;
998
999                 /* Some broken BIOSes never initialize Controller chip */
1000                 ohci_controller_init(sc);
1001
1002                 if (sc->sc_intre)
1003                         OWRITE4(sc, OHCI_INTERRUPT_ENABLE,
1004                                 sc->sc_intre & (OHCI_ALL_INTRS | OHCI_MIE));
1005                 if (sc->sc_control)
1006                         ctl = sc->sc_control;
1007                 else
1008                         ctl = OREAD4(sc, OHCI_CONTROL);
1009                 ctl |= OHCI_HCFS_RESUME;
1010                 OWRITE4(sc, OHCI_CONTROL, ctl);
1011                 usb_delay_ms(&sc->sc_bus, USB_RESUME_DELAY);
1012                 ctl = (ctl & ~OHCI_HCFS_MASK) | OHCI_HCFS_OPERATIONAL;
1013                 OWRITE4(sc, OHCI_CONTROL, ctl);
1014                 usb_delay_ms(&sc->sc_bus, USB_RESUME_RECOVERY);
1015                 sc->sc_control = sc->sc_intre = 0;
1016                 sc->sc_bus.use_polling--;
1017         }
1018         crit_exit();
1019 }
1020
1021 #ifdef USB_DEBUG
1022 void
1023 ohci_dumpregs(ohci_softc_t *sc)
1024 {
1025         DPRINTF(("ohci_dumpregs: rev=0x%08x control=0x%08x command=0x%08x\n",
1026                  OREAD4(sc, OHCI_REVISION),
1027                  OREAD4(sc, OHCI_CONTROL),
1028                  OREAD4(sc, OHCI_COMMAND_STATUS)));
1029         DPRINTF(("               intrstat=0x%08x intre=0x%08x intrd=0x%08x\n",
1030                  OREAD4(sc, OHCI_INTERRUPT_STATUS),
1031                  OREAD4(sc, OHCI_INTERRUPT_ENABLE),
1032                  OREAD4(sc, OHCI_INTERRUPT_DISABLE)));
1033         DPRINTF(("               hcca=0x%08x percur=0x%08x ctrlhd=0x%08x\n",
1034                  OREAD4(sc, OHCI_HCCA),
1035                  OREAD4(sc, OHCI_PERIOD_CURRENT_ED),
1036                  OREAD4(sc, OHCI_CONTROL_HEAD_ED)));
1037         DPRINTF(("               ctrlcur=0x%08x bulkhd=0x%08x bulkcur=0x%08x\n",
1038                  OREAD4(sc, OHCI_CONTROL_CURRENT_ED),
1039                  OREAD4(sc, OHCI_BULK_HEAD_ED),
1040                  OREAD4(sc, OHCI_BULK_CURRENT_ED)));
1041         DPRINTF(("               done=0x%08x fmival=0x%08x fmrem=0x%08x\n",
1042                  OREAD4(sc, OHCI_DONE_HEAD),
1043                  OREAD4(sc, OHCI_FM_INTERVAL),
1044                  OREAD4(sc, OHCI_FM_REMAINING)));
1045         DPRINTF(("               fmnum=0x%08x perst=0x%08x lsthrs=0x%08x\n",
1046                  OREAD4(sc, OHCI_FM_NUMBER),
1047                  OREAD4(sc, OHCI_PERIODIC_START),
1048                  OREAD4(sc, OHCI_LS_THRESHOLD)));
1049         DPRINTF(("               desca=0x%08x descb=0x%08x stat=0x%08x\n",
1050                  OREAD4(sc, OHCI_RH_DESCRIPTOR_A),
1051                  OREAD4(sc, OHCI_RH_DESCRIPTOR_B),
1052                  OREAD4(sc, OHCI_RH_STATUS)));
1053         DPRINTF(("               port1=0x%08x port2=0x%08x\n",
1054                  OREAD4(sc, OHCI_RH_PORT_STATUS(1)),
1055                  OREAD4(sc, OHCI_RH_PORT_STATUS(2))));
1056         DPRINTF(("         HCCA: frame_number=0x%04x done_head=0x%08x\n",
1057                  le32toh(sc->sc_hcca->hcca_frame_number),
1058                  le32toh(sc->sc_hcca->hcca_done_head)));
1059 }
1060 #endif
1061
1062 static int ohci_intr1(ohci_softc_t *);
1063
1064 int
1065 ohci_intr(void *p)
1066 {
1067         ohci_softc_t *sc = p;
1068
1069         if (sc->sc_dying || (sc->sc_flags & OHCI_SCFLG_DONEINIT) == 0)
1070                 return (0);
1071
1072         /* If we get an interrupt while polling, then just ignore it. */
1073         if (sc->sc_bus.use_polling) {
1074 #ifdef DIAGNOSTIC
1075                 DPRINTFN(16, ("ohci_intr: ignored interrupt while polling\n"));
1076 #endif
1077                 return (0);
1078         }
1079
1080         return (ohci_intr1(sc));
1081 }
1082
1083 static int
1084 ohci_intr1(ohci_softc_t *sc)
1085 {
1086         u_int32_t intrs, eintrs;
1087         ohci_physaddr_t done;
1088
1089         DPRINTFN(14,("ohci_intr1: enter\n"));
1090
1091         /* In case the interrupt occurs before initialization has completed. */
1092         if (sc->sc_hcca == NULL) {
1093 #ifdef DIAGNOSTIC
1094                 kprintf("ohci_intr: sc->sc_hcca == NULL\n");
1095 #endif
1096                 return (0);
1097         }
1098
1099         intrs = 0;
1100         done = le32toh(sc->sc_hcca->hcca_done_head);
1101
1102         /* The LSb of done is used to inform the HC Driver that an interrupt
1103          * condition exists for both the Done list and for another event
1104          * recorded in HcInterruptStatus. On an interrupt from the HC, the HC
1105          * Driver checks the HccaDoneHead Value. If this value is 0, then the
1106          * interrupt was caused by other than the HccaDoneHead update and the
1107          * HcInterruptStatus register needs to be accessed to determine that
1108          * exact interrupt cause. If HccaDoneHead is nonzero, then a Done list
1109          * update interrupt is indicated and if the LSb of done is nonzero,
1110          * then an additional interrupt event is indicated and
1111          * HcInterruptStatus should be checked to determine its cause.
1112          */
1113         if (done != 0) {
1114                 if (done & ~OHCI_DONE_INTRS)
1115                         intrs = OHCI_WDH;
1116                 if (done & OHCI_DONE_INTRS) {
1117                         intrs |= OREAD4(sc, OHCI_INTERRUPT_STATUS);
1118                         done &= ~OHCI_DONE_INTRS;
1119                 }
1120                 sc->sc_hcca->hcca_done_head = 0;
1121         } else
1122                 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS) & ~OHCI_WDH;
1123
1124         if (intrs == 0)         /* nothing to be done (PCI shared interrupt) */
1125                 return (0);
1126
1127         intrs &= ~OHCI_MIE;
1128         OWRITE4(sc, OHCI_INTERRUPT_STATUS, intrs); /* Acknowledge */
1129         eintrs = intrs & sc->sc_eintrs;
1130         if (!eintrs)
1131                 return (0);
1132
1133         sc->sc_bus.intr_context++;
1134         sc->sc_bus.no_intrs++;
1135         DPRINTFN(7, ("ohci_intr: sc=%p intrs=0x%x(0x%x) eintrs=0x%x\n",
1136                      sc, (u_int)intrs, OREAD4(sc, OHCI_INTERRUPT_STATUS),
1137                      (u_int)eintrs));
1138
1139         if (eintrs & OHCI_SO) {
1140                 sc->sc_overrun_cnt++;
1141                 if (usbd_ratecheck(&sc->sc_overrun_ntc)) {
1142                         kprintf("%s: %u scheduling overruns\n",
1143                             device_get_nameunit(sc->sc_bus.bdev), sc->sc_overrun_cnt);
1144                         sc->sc_overrun_cnt = 0;
1145                 }
1146                 /* XXX do what */
1147                 eintrs &= ~OHCI_SO;
1148         }
1149         if (eintrs & OHCI_WDH) {
1150                 ohci_add_done(sc, done &~ OHCI_DONE_INTRS);
1151                 usb_schedsoftintr(&sc->sc_bus);
1152                 eintrs &= ~OHCI_WDH;
1153         }
1154         if (eintrs & OHCI_RD) {
1155                 kprintf("%s: resume detect\n", device_get_nameunit(sc->sc_bus.bdev));
1156                 /* XXX process resume detect */
1157         }
1158         if (eintrs & OHCI_UE) {
1159                 kprintf("%s: unrecoverable error, controller halted\n",
1160                        device_get_nameunit(sc->sc_bus.bdev));
1161                 OWRITE4(sc, OHCI_CONTROL, OHCI_HCFS_RESET);
1162                 /* XXX what else */
1163         }
1164         if (eintrs & OHCI_RHSC) {
1165                 ohci_rhsc(sc, sc->sc_intrxfer);
1166                 /*
1167                  * Disable RHSC interrupt for now, because it will be
1168                  * on until the port has been reset.
1169                  */
1170                 ohci_rhsc_able(sc, 0);
1171                 /* Do not allow RHSC interrupts > 1 per second */
1172                 usb_callout(sc->sc_tmo_rhsc, hz, ohci_rhsc_enable, sc);
1173                 eintrs &= ~OHCI_RHSC;
1174         }
1175
1176         sc->sc_bus.intr_context--;
1177
1178         if (eintrs != 0) {
1179                 /* Block unprocessed interrupts. XXX */
1180                 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, eintrs);
1181                 sc->sc_eintrs &= ~eintrs;
1182                 kprintf("%s: blocking intrs 0x%x\n",
1183                        device_get_nameunit(sc->sc_bus.bdev), eintrs);
1184         }
1185
1186         return (1);
1187 }
1188
1189 void
1190 ohci_rhsc_able(ohci_softc_t *sc, int on)
1191 {
1192         DPRINTFN(4, ("ohci_rhsc_able: on=%d\n", on));
1193         if (on) {
1194                 sc->sc_eintrs |= OHCI_RHSC;
1195                 OWRITE4(sc, OHCI_INTERRUPT_ENABLE, OHCI_RHSC);
1196         } else {
1197                 sc->sc_eintrs &= ~OHCI_RHSC;
1198                 OWRITE4(sc, OHCI_INTERRUPT_DISABLE, OHCI_RHSC);
1199         }
1200 }
1201
1202 void
1203 ohci_rhsc_enable(void *v_sc)
1204 {
1205         ohci_softc_t *sc = v_sc;
1206
1207         crit_enter();
1208         ohci_rhsc_able(sc, 1);
1209         crit_exit();
1210 }
1211
1212 #ifdef USB_DEBUG
1213 char *ohci_cc_strs[] = {
1214         "NO_ERROR",
1215         "CRC",
1216         "BIT_STUFFING",
1217         "DATA_TOGGLE_MISMATCH",
1218         "STALL",
1219         "DEVICE_NOT_RESPONDING",
1220         "PID_CHECK_FAILURE",
1221         "UNEXPECTED_PID",
1222         "DATA_OVERRUN",
1223         "DATA_UNDERRUN",
1224         "BUFFER_OVERRUN",
1225         "BUFFER_UNDERRUN",
1226         "reserved",
1227         "reserved",
1228         "NOT_ACCESSED",
1229         "NOT_ACCESSED"
1230 };
1231 #endif
1232
1233 void
1234 ohci_add_done(ohci_softc_t *sc, ohci_physaddr_t done)
1235 {
1236         ohci_soft_itd_t *sitd, *sidone, **ip;
1237         ohci_soft_td_t  *std,  *sdone,  **p;
1238
1239         /* Reverse the done list. */
1240         for (sdone = NULL, sidone = NULL; done != 0; ) {
1241                 std = ohci_hash_find_td(sc, done);
1242                 if (std != NULL) {
1243                         std->dnext = sdone;
1244                         done = le32toh(std->td.td_nexttd);
1245                         sdone = std;
1246                         DPRINTFN(10,("add TD %p\n", std));
1247                         continue;
1248                 }
1249                 sitd = ohci_hash_find_itd(sc, done);
1250                 if (sitd != NULL) {
1251                         sitd->dnext = sidone;
1252                         done = le32toh(sitd->itd.itd_nextitd);
1253                         sidone = sitd;
1254                         DPRINTFN(5,("add ITD %p\n", sitd));
1255                         continue;
1256                 }
1257                 panic("ohci_add_done: addr 0x%08lx not found", (u_long)done);
1258         }
1259
1260         /* sdone & sidone now hold the done lists. */
1261         /* Put them on the already processed lists. */
1262         for (p = &sc->sc_sdone; *p != NULL; p = &(*p)->dnext)
1263                 ;
1264         *p = sdone;
1265         for (ip = &sc->sc_sidone; *ip != NULL; ip = &(*ip)->dnext)
1266                 ;
1267         *ip = sidone;
1268 }
1269
1270 void
1271 ohci_softintr(void *v)
1272 {
1273         ohci_softc_t *sc = v;
1274         ohci_soft_itd_t *sitd, *sidone, *sitdnext;
1275         ohci_soft_td_t  *std,  *sdone,  *stdnext, *p, *n;
1276         usbd_xfer_handle xfer;
1277         struct ohci_pipe *opipe;
1278         int len, cc;
1279         int i, j, iframes;
1280         
1281         DPRINTFN(10,("ohci_softintr: enter\n"));
1282
1283         sc->sc_bus.intr_context++;
1284
1285         crit_enter();
1286         sdone = sc->sc_sdone;
1287         sc->sc_sdone = NULL;
1288         sidone = sc->sc_sidone;
1289         sc->sc_sidone = NULL;
1290         crit_exit();
1291
1292         DPRINTFN(10,("ohci_softintr: sdone=%p sidone=%p\n", sdone, sidone));
1293
1294 #ifdef USB_DEBUG
1295         if (ohcidebug > 10) {
1296                 DPRINTF(("ohci_process_done: TD done:\n"));
1297                 ohci_dump_tds(sdone);
1298         }
1299 #endif
1300
1301         for (std = sdone; std; std = stdnext) {
1302                 xfer = std->xfer;
1303                 stdnext = std->dnext;
1304                 DPRINTFN(10, ("ohci_process_done: std=%p xfer=%p hcpriv=%p\n",
1305                                 std, xfer, (xfer ? xfer->hcpriv : NULL)));
1306                 if (xfer == NULL) {
1307                         /*
1308                          * xfer == NULL: There seems to be no xfer associated
1309                          * with this TD. It is tailp that happened to end up on
1310                          * the done queue.
1311                          */
1312                         continue;
1313                 }
1314                 if (xfer->status == USBD_CANCELLED ||
1315                     xfer->status == USBD_TIMEOUT) {
1316                         DPRINTF(("ohci_process_done: cancel/timeout %p\n",
1317                                  xfer));
1318                         /* Handled by abort routine. */
1319                         continue;
1320                 }
1321
1322                 len = std->len;
1323                 if (std->td.td_cbp != 0)
1324                         len -= le32toh(std->td.td_be) -
1325                                le32toh(std->td.td_cbp) + 1;
1326                 DPRINTFN(10, ("ohci_process_done: len=%d, flags=0x%x\n", len,
1327                     std->flags));
1328                 if (std->flags & OHCI_ADD_LEN)
1329                         xfer->actlen += len;
1330
1331                 cc = OHCI_TD_GET_CC(le32toh(std->td.td_flags));
1332                 if (cc != OHCI_CC_NO_ERROR) {
1333                         /*
1334                          * Endpoint is halted.  First unlink all the TDs
1335                          * belonging to the failed transfer, and then restart
1336                          * the endpoint.
1337                          */
1338                         opipe = (struct ohci_pipe *)xfer->pipe;
1339
1340                         DPRINTFN(15,("ohci_process_done: error cc=%d (%s)\n",
1341                           OHCI_TD_GET_CC(le32toh(std->td.td_flags)),
1342                           ohci_cc_strs[OHCI_TD_GET_CC(le32toh(std->td.td_flags))]));
1343                         usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
1344                         usb_rem_task(OXFER(xfer)->xfer.pipe->device,
1345                             &OXFER(xfer)->abort_task);
1346
1347                         /* Remove all this xfer's TDs from the done queue. */
1348                         for (p = std; p->dnext != NULL; p = p->dnext) {
1349                                 if (p->dnext->xfer != xfer)
1350                                         continue;
1351                                 p->dnext = p->dnext->dnext;
1352                         }
1353                         /* The next TD may have been removed. */
1354                         stdnext = std->dnext;
1355
1356                         /* Remove all TDs belonging to this xfer. */
1357                         for (p = xfer->hcpriv; p->xfer == xfer; p = n) {
1358                                 n = p->nexttd;
1359                                 ohci_free_std(sc, p);
1360                         }
1361
1362                         /* clear halt */
1363                         opipe->sed->ed.ed_headp = htole32(p->physaddr);
1364                         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
1365
1366                         if (cc == OHCI_CC_STALL)
1367                                 xfer->status = USBD_STALLED;
1368                         else
1369                                 xfer->status = USBD_IOERROR;
1370                         crit_enter();
1371                         usb_transfer_complete(xfer);
1372                         crit_exit();
1373                         continue;
1374                 }
1375                 /*
1376                  * Skip intermediate TDs. They remain linked from
1377                  * xfer->hcpriv and we free them when the transfer completes.
1378                  */
1379                 if ((std->flags & OHCI_CALL_DONE) == 0)
1380                         continue;
1381
1382                 /* Normal transfer completion */
1383                 usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
1384                 usb_rem_task(OXFER(xfer)->xfer.pipe->device,
1385                     &OXFER(xfer)->abort_task);
1386                 for (p = xfer->hcpriv; p->xfer == xfer; p = n) {
1387                         n = p->nexttd;
1388                         ohci_free_std(sc, p);
1389                 }
1390                 xfer->status = USBD_NORMAL_COMPLETION;
1391                 crit_enter();
1392                 usb_transfer_complete(xfer);
1393                 crit_exit();
1394         }
1395
1396 #ifdef USB_DEBUG
1397         if (ohcidebug > 10) {
1398                 DPRINTF(("ohci_softintr: ITD done:\n"));
1399                 ohci_dump_itds(sidone);
1400         }
1401 #endif
1402
1403         for (sitd = sidone; sitd != NULL; sitd = sitdnext) {
1404                 xfer = sitd->xfer;
1405                 sitdnext = sitd->dnext;
1406                 sitd->flags |= OHCI_ITD_INTFIN;
1407                 DPRINTFN(1, ("ohci_process_done: sitd=%p xfer=%p hcpriv=%p\n",
1408                              sitd, xfer, xfer ? xfer->hcpriv : 0));
1409                 if (xfer == NULL)
1410                         continue;
1411                 if (xfer->status == USBD_CANCELLED ||
1412                     xfer->status == USBD_TIMEOUT) {
1413                         DPRINTF(("ohci_process_done: cancel/timeout %p\n",
1414                                  xfer));
1415                         /* Handled by abort routine. */
1416                         continue;
1417                 }
1418                 if (xfer->pipe)
1419                         if (xfer->pipe->aborting)
1420                                 continue; /*Ignore.*/
1421 #ifdef DIAGNOSTIC
1422                 if (sitd->isdone)
1423                         kprintf("ohci_softintr: sitd=%p is done\n", sitd);
1424                 sitd->isdone = 1;
1425 #endif
1426                 opipe = (struct ohci_pipe *)xfer->pipe;
1427                 if (opipe->aborting)
1428                         continue;
1429  
1430                 if (sitd->flags & OHCI_CALL_DONE) {
1431                         ohci_soft_itd_t *next;
1432
1433                         opipe->u.iso.inuse -= xfer->nframes;
1434                         xfer->status = USBD_NORMAL_COMPLETION;
1435                         for (i = 0, sitd = xfer->hcpriv;;sitd = next) {
1436                                 next = sitd->nextitd;
1437                                 if (OHCI_ITD_GET_CC(sitd->itd.itd_flags) != OHCI_CC_NO_ERROR)
1438                                         xfer->status = USBD_IOERROR;
1439
1440                                 if (xfer->status == USBD_NORMAL_COMPLETION) {
1441                                         iframes = OHCI_ITD_GET_FC(sitd->itd.itd_flags);
1442                                         for (j = 0; j < iframes; i++, j++) {
1443                                                 len = le16toh(sitd->itd.itd_offset[j]);
1444                                                 len =
1445                                                    (OHCI_ITD_PSW_GET_CC(len) ==
1446                                                     OHCI_CC_NOT_ACCESSED) ? 0 :
1447                                                     OHCI_ITD_PSW_LENGTH(len);
1448                                                 xfer->frlengths[i] = len;
1449                                         }
1450                                 }
1451                                 if (sitd->flags & OHCI_CALL_DONE)
1452                                         break;
1453                         }
1454
1455                         crit_enter();
1456                         usb_transfer_complete(xfer);
1457                         crit_exit();
1458                 }
1459         }
1460
1461 #ifdef USB_USE_SOFTINTR
1462         if (sc->sc_softwake) {
1463                 sc->sc_softwake = 0;
1464                 wakeup(&sc->sc_softwake);
1465         }
1466 #endif /* USB_USE_SOFTINTR */
1467
1468         sc->sc_bus.intr_context--;
1469         DPRINTFN(10,("ohci_softintr: done:\n"));
1470 }
1471
1472 void
1473 ohci_device_ctrl_done(usbd_xfer_handle xfer)
1474 {
1475         DPRINTFN(10,("ohci_device_ctrl_done: xfer=%p\n", xfer));
1476
1477 #ifdef DIAGNOSTIC
1478         if (!(xfer->rqflags & URQ_REQUEST)) {
1479                 panic("ohci_device_ctrl_done: not a request");
1480         }
1481 #endif
1482         xfer->hcpriv = NULL;
1483 }
1484
1485 void
1486 ohci_device_intr_done(usbd_xfer_handle xfer)
1487 {
1488         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
1489         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
1490         ohci_soft_ed_t *sed = opipe->sed;
1491         ohci_soft_td_t *data, *tail;
1492
1493
1494         DPRINTFN(10,("ohci_device_intr_done: xfer=%p, actlen=%d\n",
1495                      xfer, xfer->actlen));
1496
1497         xfer->hcpriv = NULL;
1498
1499         if (xfer->pipe->repeat) {
1500                 data = opipe->tail.td;
1501                 tail = ohci_alloc_std(sc); /* XXX should reuse TD */
1502                 if (tail == NULL) {
1503                         xfer->status = USBD_NOMEM;
1504                         return;
1505                 }
1506                 tail->xfer = NULL;
1507
1508                 data->td.td_flags = htole32(
1509                         OHCI_TD_IN | OHCI_TD_NOCC |
1510                         OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY);
1511                 if (xfer->flags & USBD_SHORT_XFER_OK)
1512                         data->td.td_flags |= htole32(OHCI_TD_R);
1513                 data->td.td_cbp = htole32(DMAADDR(&xfer->dmabuf, 0));
1514                 data->nexttd = tail;
1515                 data->td.td_nexttd = htole32(tail->physaddr);
1516                 data->td.td_be = htole32(le32toh(data->td.td_cbp) +
1517                         xfer->length - 1);
1518                 data->len = xfer->length;
1519                 data->xfer = xfer;
1520                 data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN;
1521                 xfer->hcpriv = data;
1522                 xfer->actlen = 0;
1523
1524                 sed->ed.ed_tailp = htole32(tail->physaddr);
1525                 opipe->tail.td = tail;
1526         }
1527 }
1528
1529 void
1530 ohci_device_bulk_done(usbd_xfer_handle xfer)
1531 {
1532         DPRINTFN(10,("ohci_device_bulk_done: xfer=%p, actlen=%d\n",
1533                      xfer, xfer->actlen));
1534
1535         xfer->hcpriv = NULL;
1536 }
1537
1538 void
1539 ohci_rhsc(ohci_softc_t *sc, usbd_xfer_handle xfer)
1540 {
1541         usbd_pipe_handle pipe;
1542         u_char *p;
1543         int i, m;
1544         int hstatus;
1545
1546         hstatus = OREAD4(sc, OHCI_RH_STATUS);
1547         DPRINTF(("ohci_rhsc: sc=%p xfer=%p hstatus=0x%08x\n",
1548                  sc, xfer, hstatus));
1549
1550         if (xfer == NULL) {
1551                 /* Just ignore the change. */
1552                 return;
1553         }
1554
1555         pipe = xfer->pipe;
1556
1557         p = KERNADDR(&xfer->dmabuf, 0);
1558         m = min(sc->sc_noport, xfer->length * 8 - 1);
1559         memset(p, 0, xfer->length);
1560         for (i = 1; i <= m; i++) {
1561                 /* Pick out CHANGE bits from the status reg. */
1562                 if (OREAD4(sc, OHCI_RH_PORT_STATUS(i)) >> 16)
1563                         p[i/8] |= 1 << (i%8);
1564         }
1565         DPRINTF(("ohci_rhsc: change=0x%02x\n", *p));
1566         xfer->actlen = xfer->length;
1567         xfer->status = USBD_NORMAL_COMPLETION;
1568
1569         usb_transfer_complete(xfer);
1570 }
1571
1572 void
1573 ohci_root_intr_done(usbd_xfer_handle xfer)
1574 {
1575         xfer->hcpriv = NULL;
1576 }
1577
1578 void
1579 ohci_root_ctrl_done(usbd_xfer_handle xfer)
1580 {
1581         xfer->hcpriv = NULL;
1582 }
1583
1584 /*
1585  * Wait here until controller claims to have an interrupt.
1586  * Then call ohci_intr and return.  Use timeout to avoid waiting
1587  * too long.
1588  */
1589 void
1590 ohci_waitintr(ohci_softc_t *sc, usbd_xfer_handle xfer)
1591 {
1592         int timo = xfer->timeout;
1593         int usecs;
1594         u_int32_t intrs;
1595
1596         xfer->status = USBD_IN_PROGRESS;
1597         for (usecs = timo * 1000000 / hz; usecs > 0; usecs -= 1000) {
1598                 usb_delay_ms(&sc->sc_bus, 1);
1599                 if (sc->sc_dying)
1600                         break;
1601                 intrs = OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs;
1602                 DPRINTFN(15,("ohci_waitintr: 0x%04x\n", intrs));
1603 #ifdef USB_DEBUG
1604                 if (ohcidebug > 15)
1605                         ohci_dumpregs(sc);
1606 #endif
1607                 if (intrs) {
1608                         ohci_intr1(sc);
1609                         if (xfer->status != USBD_IN_PROGRESS)
1610                                 return;
1611                 }
1612         }
1613
1614         /* Timeout */
1615         DPRINTF(("ohci_waitintr: timeout\n"));
1616         xfer->status = USBD_TIMEOUT;
1617         usb_transfer_complete(xfer);
1618         /* XXX should free TD */
1619 }
1620
1621 void
1622 ohci_poll(struct usbd_bus *bus)
1623 {
1624         ohci_softc_t *sc = (ohci_softc_t *)bus;
1625 #ifdef USB_DEBUG
1626         static int last;
1627         int new;
1628         new = OREAD4(sc, OHCI_INTERRUPT_STATUS);
1629         if (new != last) {
1630                 DPRINTFN(10,("ohci_poll: intrs=0x%04x\n", new));
1631                 last = new;
1632         }
1633 #endif
1634
1635         if (OREAD4(sc, OHCI_INTERRUPT_STATUS) & sc->sc_eintrs)
1636                 ohci_intr1(sc);
1637 }
1638
1639 usbd_status
1640 ohci_device_request(usbd_xfer_handle xfer)
1641 {
1642         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
1643         usb_device_request_t *req = &xfer->request;
1644         usbd_device_handle dev = opipe->pipe.device;
1645         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
1646         int addr = dev->address;
1647         ohci_soft_td_t *setup, *stat, *next, *tail;
1648         ohci_soft_ed_t *sed;
1649         int isread;
1650         int len;
1651         usbd_status err;
1652
1653         isread = req->bmRequestType & UT_READ;
1654         len = UGETW(req->wLength);
1655
1656         DPRINTFN(3,("ohci_device_control type=0x%02x, request=0x%02x, "
1657                     "wValue=0x%04x, wIndex=0x%04x len=%d, addr=%d, endpt=%d\n",
1658                     req->bmRequestType, req->bRequest, UGETW(req->wValue),
1659                     UGETW(req->wIndex), len, addr,
1660                     opipe->pipe.endpoint->edesc->bEndpointAddress));
1661
1662         setup = opipe->tail.td;
1663         stat = ohci_alloc_std(sc);
1664         if (stat == NULL) {
1665                 err = USBD_NOMEM;
1666                 goto bad1;
1667         }
1668         tail = ohci_alloc_std(sc);
1669         if (tail == NULL) {
1670                 err = USBD_NOMEM;
1671                 goto bad2;
1672         }
1673         tail->xfer = NULL;
1674
1675         sed = opipe->sed;
1676         opipe->u.ctl.length = len;
1677
1678         /* Update device address and length since they may have changed
1679            during the setup of the control pipe in usbd_new_device(). */
1680         /* XXX This only needs to be done once, but it's too early in open. */
1681         /* XXXX Should not touch ED here! */
1682         sed->ed.ed_flags = htole32(
1683          (le32toh(sed->ed.ed_flags) & ~(OHCI_ED_ADDRMASK | OHCI_ED_MAXPMASK)) |
1684          OHCI_ED_SET_FA(addr) |
1685          OHCI_ED_SET_MAXP(UGETW(opipe->pipe.endpoint->edesc->wMaxPacketSize)));
1686
1687         next = stat;
1688
1689         /* Set up data transaction */
1690         if (len != 0) {
1691                 ohci_soft_td_t *std = stat;
1692
1693                 err = ohci_alloc_std_chain(opipe, sc, len, isread, xfer,
1694                           std, &stat);
1695                 stat = stat->nexttd; /* point at free TD */
1696                 if (err)
1697                         goto bad3;
1698                 /* Start toggle at 1 and then use the carried toggle. */
1699                 std->td.td_flags &= htole32(~OHCI_TD_TOGGLE_MASK);
1700                 std->td.td_flags |= htole32(OHCI_TD_TOGGLE_1);
1701         }
1702
1703         memcpy(KERNADDR(&opipe->u.ctl.reqdma, 0), req, sizeof *req);
1704
1705         setup->td.td_flags = htole32(OHCI_TD_SETUP | OHCI_TD_NOCC |
1706                                      OHCI_TD_TOGGLE_0 | OHCI_TD_SET_DI(6));
1707         setup->td.td_cbp = htole32(DMAADDR(&opipe->u.ctl.reqdma, 0));
1708         setup->nexttd = next;
1709         setup->td.td_nexttd = htole32(next->physaddr);
1710         setup->td.td_be = htole32(le32toh(setup->td.td_cbp) + sizeof *req - 1);
1711         setup->len = 0;
1712         setup->xfer = xfer;
1713         setup->flags = 0;
1714         xfer->hcpriv = setup;
1715
1716         stat->td.td_flags = htole32(
1717                 (isread ? OHCI_TD_OUT : OHCI_TD_IN) |
1718                 OHCI_TD_NOCC | OHCI_TD_TOGGLE_1 | OHCI_TD_SET_DI(1));
1719         stat->td.td_cbp = 0;
1720         stat->nexttd = tail;
1721         stat->td.td_nexttd = htole32(tail->physaddr);
1722         stat->td.td_be = 0;
1723         stat->flags = OHCI_CALL_DONE;
1724         stat->len = 0;
1725         stat->xfer = xfer;
1726
1727 #ifdef USB_DEBUG
1728         if (ohcidebug > 5) {
1729                 DPRINTF(("ohci_device_request:\n"));
1730                 ohci_dump_ed(sed);
1731                 ohci_dump_tds(setup);
1732         }
1733 #endif
1734
1735         /* Insert ED in schedule */
1736         crit_enter();
1737         sed->ed.ed_tailp = htole32(tail->physaddr);
1738         opipe->tail.td = tail;
1739         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_CLF);
1740         if (xfer->timeout && !sc->sc_bus.use_polling) {
1741                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
1742                             ohci_timeout, xfer);
1743         }
1744         crit_exit();
1745
1746 #ifdef USB_DEBUG
1747         if (ohcidebug > 20) {
1748                 delay(10000);
1749                 DPRINTF(("ohci_device_request: status=%x\n",
1750                          OREAD4(sc, OHCI_COMMAND_STATUS)));
1751                 ohci_dumpregs(sc);
1752                 kprintf("ctrl head:\n");
1753                 ohci_dump_ed(sc->sc_ctrl_head);
1754                 kprintf("sed:\n");
1755                 ohci_dump_ed(sed);
1756                 ohci_dump_tds(setup);
1757         }
1758 #endif
1759
1760         return (USBD_NORMAL_COMPLETION);
1761
1762  bad3:
1763         ohci_free_std(sc, tail);
1764  bad2:
1765         ohci_free_std(sc, stat);
1766  bad1:
1767         return (err);
1768 }
1769
1770 /*
1771  * Add an ED to the schedule.  Called from a critical section.
1772  */
1773 void
1774 ohci_add_ed(ohci_soft_ed_t *sed, ohci_soft_ed_t *head)
1775 {
1776         DPRINTFN(8,("ohci_add_ed: sed=%p head=%p\n", sed, head));
1777
1778         sed->next = head->next;
1779         sed->ed.ed_nexted = head->ed.ed_nexted;
1780         head->next = sed;
1781         head->ed.ed_nexted = htole32(sed->physaddr);
1782 }
1783
1784 /*
1785  * Remove an ED from the schedule.  Called from a critical section.
1786  */
1787 void
1788 ohci_rem_ed(ohci_soft_ed_t *sed, ohci_soft_ed_t *head)
1789 {
1790         ohci_soft_ed_t *p;
1791
1792
1793         /* XXX */
1794         for (p = head; p != NULL && p->next != sed; p = p->next)
1795                 ;
1796 #if 0
1797         if (p == NULL)
1798                 panic("ohci_rem_ed: ED not found");
1799 #else
1800         /*
1801          * XXX
1802          * p == NULL if ohci is detaching and there are still devices
1803          * using ohci (e.g. usb sticks are still plugged in).  But
1804          * the real solution should be correcting ohci_free_sed() or
1805          * correctly use it.
1806          */
1807         if (p != NULL) {
1808                 p->next = sed->next;
1809                 p->ed.ed_nexted = sed->ed.ed_nexted;
1810         }
1811 #endif
1812 }
1813
1814 /*
1815  * When a transfer is completed the TD is added to the done queue by
1816  * the host controller.  This queue is the processed by software.
1817  * Unfortunately the queue contains the physical address of the TD
1818  * and we have no simple way to translate this back to a kernel address.
1819  * To make the translation possible (and fast) we use a hash table of
1820  * TDs currently in the schedule.  The physical address is used as the
1821  * hash value.
1822  */
1823
1824 #define HASH(a) (((a) >> 4) % OHCI_HASH_SIZE)
1825 /*
1826  * Called from a critical section
1827  */
1828 void
1829 ohci_hash_add_td(ohci_softc_t *sc, ohci_soft_td_t *std)
1830 {
1831         int h = HASH(std->physaddr);
1832
1833         LIST_INSERT_HEAD(&sc->sc_hash_tds[h], std, hnext);
1834 }
1835
1836 /*
1837  * Called from a critical section
1838  */
1839 void
1840 ohci_hash_rem_td(ohci_softc_t *sc, ohci_soft_td_t *std)
1841 {
1842         LIST_REMOVE(std, hnext);
1843 }
1844
1845 ohci_soft_td_t *
1846 ohci_hash_find_td(ohci_softc_t *sc, ohci_physaddr_t a)
1847 {
1848         int h = HASH(a);
1849         ohci_soft_td_t *std;
1850
1851         /* if these are present they should be masked out at an earlier
1852          * stage.
1853          */
1854         KASSERT((a&~OHCI_HEADMASK) == 0, ("%s: 0x%b has lower bits set\n",
1855                                       device_get_nameunit(sc->sc_bus.bdev),
1856                                       (int) a, "\20\1HALT\2TOGGLE"));
1857
1858         for (std = LIST_FIRST(&sc->sc_hash_tds[h]);
1859              std != NULL;
1860              std = LIST_NEXT(std, hnext))
1861                 if (std->physaddr == a)
1862                         return (std);
1863
1864         DPRINTF(("%s: ohci_hash_find_td: addr 0x%08lx not found\n",
1865                 device_get_nameunit(sc->sc_bus.bdev), (u_long) a));
1866         return (NULL);
1867 }
1868
1869 /*
1870  * Called from a critical section
1871  */
1872 void
1873 ohci_hash_add_itd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
1874 {
1875         int h = HASH(sitd->physaddr);
1876
1877         DPRINTFN(10,("ohci_hash_add_itd: sitd=%p physaddr=0x%08lx\n",
1878                     sitd, (u_long)sitd->physaddr));
1879
1880         LIST_INSERT_HEAD(&sc->sc_hash_itds[h], sitd, hnext);
1881 }
1882
1883 /*
1884  * Called from a critical section
1885  */
1886 void
1887 ohci_hash_rem_itd(ohci_softc_t *sc, ohci_soft_itd_t *sitd)
1888 {
1889         DPRINTFN(10,("ohci_hash_rem_itd: sitd=%p physaddr=0x%08lx\n",
1890                     sitd, (u_long)sitd->physaddr));
1891
1892         LIST_REMOVE(sitd, hnext);
1893 }
1894
1895 ohci_soft_itd_t *
1896 ohci_hash_find_itd(ohci_softc_t *sc, ohci_physaddr_t a)
1897 {
1898         int h = HASH(a);
1899         ohci_soft_itd_t *sitd;
1900
1901         for (sitd = LIST_FIRST(&sc->sc_hash_itds[h]);
1902              sitd != NULL;
1903              sitd = LIST_NEXT(sitd, hnext))
1904                 if (sitd->physaddr == a)
1905                         return (sitd);
1906         return (NULL);
1907 }
1908
1909 void
1910 ohci_timeout(void *addr)
1911 {
1912         struct ohci_xfer *oxfer = addr;
1913         struct ohci_pipe *opipe = (struct ohci_pipe *)oxfer->xfer.pipe;
1914         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
1915
1916         DPRINTF(("ohci_timeout: oxfer=%p\n", oxfer));
1917
1918         if (sc->sc_dying) {
1919                 ohci_abort_xfer(&oxfer->xfer, USBD_TIMEOUT);
1920                 return;
1921         }
1922
1923         /* Execute the abort in a process context. */
1924         usb_add_task(oxfer->xfer.pipe->device, &oxfer->abort_task,
1925                      USB_TASKQ_HC);
1926 }
1927
1928 void
1929 ohci_timeout_task(void *addr)
1930 {
1931         usbd_xfer_handle xfer = addr;
1932
1933         DPRINTF(("ohci_timeout_task: xfer=%p\n", xfer));
1934
1935         crit_enter();
1936         ohci_abort_xfer(xfer, USBD_TIMEOUT);
1937         crit_exit();
1938 }
1939
1940 #ifdef USB_DEBUG
1941 void
1942 ohci_dump_tds(ohci_soft_td_t *std)
1943 {
1944         for (; std; std = std->nexttd)
1945                 ohci_dump_td(std);
1946 }
1947
1948 void
1949 ohci_dump_td(ohci_soft_td_t *std)
1950 {
1951         char sbuf[128];
1952
1953         bitmask_snprintf((u_int32_t)le32toh(std->td.td_flags),
1954                          "\20\23R\24OUT\25IN\31TOG1\32SETTOGGLE",
1955                          sbuf, sizeof(sbuf));
1956
1957         kprintf("TD(%p) at %08lx: %s delay=%d ec=%d cc=%d\ncbp=0x%08lx "
1958                "nexttd=0x%08lx be=0x%08lx\n",
1959                std, (u_long)std->physaddr, sbuf,
1960                OHCI_TD_GET_DI(le32toh(std->td.td_flags)),
1961                OHCI_TD_GET_EC(le32toh(std->td.td_flags)),
1962                OHCI_TD_GET_CC(le32toh(std->td.td_flags)),
1963                (u_long)le32toh(std->td.td_cbp),
1964                (u_long)le32toh(std->td.td_nexttd),
1965                (u_long)le32toh(std->td.td_be));
1966 }
1967
1968 void
1969 ohci_dump_itd(ohci_soft_itd_t *sitd)
1970 {
1971         int i;
1972
1973         kprintf("ITD(%p) at %08lx: sf=%d di=%d fc=%d cc=%d\n"
1974                "bp0=0x%08lx next=0x%08lx be=0x%08lx\n",
1975                sitd, (u_long)sitd->physaddr,
1976                OHCI_ITD_GET_SF(le32toh(sitd->itd.itd_flags)),
1977                OHCI_ITD_GET_DI(le32toh(sitd->itd.itd_flags)),
1978                OHCI_ITD_GET_FC(le32toh(sitd->itd.itd_flags)),
1979                OHCI_ITD_GET_CC(le32toh(sitd->itd.itd_flags)),
1980                (u_long)le32toh(sitd->itd.itd_bp0),
1981                (u_long)le32toh(sitd->itd.itd_nextitd),
1982                (u_long)le32toh(sitd->itd.itd_be));
1983         for (i = 0; i < OHCI_ITD_NOFFSET; i++)
1984                 kprintf("offs[%d]=0x%04x ", i,
1985                        (u_int)le16toh(sitd->itd.itd_offset[i]));
1986         kprintf("\n");
1987 }
1988
1989 void
1990 ohci_dump_itds(ohci_soft_itd_t *sitd)
1991 {
1992         for (; sitd; sitd = sitd->nextitd)
1993                 ohci_dump_itd(sitd);
1994 }
1995
1996 void
1997 ohci_dump_ed(ohci_soft_ed_t *sed)
1998 {
1999         char sbuf[128], sbuf2[128];
2000
2001         bitmask_snprintf((u_int32_t)le32toh(sed->ed.ed_flags),
2002                          "\20\14OUT\15IN\16LOWSPEED\17SKIP\20ISO",
2003                          sbuf, sizeof(sbuf));
2004         bitmask_snprintf((u_int32_t)le32toh(sed->ed.ed_headp),
2005                          "\20\1HALT\2CARRY", sbuf2, sizeof(sbuf2));
2006
2007         kprintf("ED(%p) at 0x%08lx: addr=%d endpt=%d maxp=%d flags=%s\ntailp=0x%08lx "
2008                  "headflags=%s headp=0x%08lx nexted=0x%08lx\n",
2009                  sed, (u_long)sed->physaddr,
2010                  OHCI_ED_GET_FA(le32toh(sed->ed.ed_flags)),
2011                  OHCI_ED_GET_EN(le32toh(sed->ed.ed_flags)),
2012                  OHCI_ED_GET_MAXP(le32toh(sed->ed.ed_flags)), sbuf,
2013                  (u_long)le32toh(sed->ed.ed_tailp), sbuf2,
2014                  (u_long)le32toh(sed->ed.ed_headp),
2015                  (u_long)le32toh(sed->ed.ed_nexted));
2016 }
2017 #endif
2018
2019 usbd_status
2020 ohci_open(usbd_pipe_handle pipe)
2021 {
2022         usbd_device_handle dev = pipe->device;
2023         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
2024         usb_endpoint_descriptor_t *ed = pipe->endpoint->edesc;
2025         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2026         u_int8_t addr = dev->address;
2027         u_int8_t xfertype = ed->bmAttributes & UE_XFERTYPE;
2028         ohci_soft_ed_t *sed;
2029         ohci_soft_td_t *std;
2030         ohci_soft_itd_t *sitd;
2031         ohci_physaddr_t tdphys;
2032         u_int32_t fmt;
2033         usbd_status err;
2034         int ival;
2035
2036         DPRINTFN(1, ("ohci_open: pipe=%p, addr=%d, endpt=%d (%d)\n",
2037                      pipe, addr, ed->bEndpointAddress, sc->sc_addr));
2038
2039         if (sc->sc_dying)
2040                 return (USBD_IOERROR);
2041
2042         std = NULL;
2043         sed = NULL;
2044
2045         if (addr == sc->sc_addr) {
2046                 switch (ed->bEndpointAddress) {
2047                 case USB_CONTROL_ENDPOINT:
2048                         pipe->methods = &ohci_root_ctrl_methods;
2049                         break;
2050                 case UE_DIR_IN | OHCI_INTR_ENDPT:
2051                         pipe->methods = &ohci_root_intr_methods;
2052                         break;
2053                 default:
2054                         return (USBD_INVAL);
2055                 }
2056         } else {
2057                 sed = ohci_alloc_sed(sc);
2058                 if (sed == NULL)
2059                         goto bad0;
2060                 opipe->sed = sed;
2061                 if (xfertype == UE_ISOCHRONOUS) {
2062                         sitd = ohci_alloc_sitd(sc);
2063                         if (sitd == NULL)
2064                                 goto bad1;
2065                         opipe->tail.itd = sitd;
2066                         opipe->aborting = 0;
2067                         tdphys = sitd->physaddr;
2068                         fmt = OHCI_ED_FORMAT_ISO;
2069                         if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN)
2070                                 fmt |= OHCI_ED_DIR_IN;
2071                         else
2072                                 fmt |= OHCI_ED_DIR_OUT;
2073                 } else {
2074                         std = ohci_alloc_std(sc);
2075                         if (std == NULL)
2076                                 goto bad1;
2077                         opipe->tail.td = std;
2078                         tdphys = std->physaddr;
2079                         fmt = OHCI_ED_FORMAT_GEN | OHCI_ED_DIR_TD;
2080                 }
2081                 sed->ed.ed_flags = htole32(
2082                         OHCI_ED_SET_FA(addr) |
2083                         OHCI_ED_SET_EN(UE_GET_ADDR(ed->bEndpointAddress)) |
2084                         (dev->speed == USB_SPEED_LOW ? OHCI_ED_SPEED : 0) |
2085                         fmt |
2086                         OHCI_ED_SET_MAXP(UGETW(ed->wMaxPacketSize)));
2087                 sed->ed.ed_headp = htole32(tdphys |
2088                     (pipe->endpoint->savedtoggle ? OHCI_TOGGLECARRY : 0));
2089                 sed->ed.ed_tailp = htole32(tdphys);
2090
2091                 switch (xfertype) {
2092                 case UE_CONTROL:
2093                         pipe->methods = &ohci_device_ctrl_methods;
2094                         err = usb_allocmem(&sc->sc_bus,
2095                                   sizeof(usb_device_request_t),
2096                                   0, &opipe->u.ctl.reqdma);
2097                         if (err)
2098                                 goto bad;
2099                         crit_enter();
2100                         ohci_add_ed(sed, sc->sc_ctrl_head);
2101                         crit_exit();
2102                         break;
2103                 case UE_INTERRUPT:
2104                         pipe->methods = &ohci_device_intr_methods;
2105                         ival = pipe->interval;
2106                         if (ival == USBD_DEFAULT_INTERVAL)
2107                                 ival = ed->bInterval;
2108                         return (ohci_device_setintr(sc, opipe, ival));
2109                 case UE_ISOCHRONOUS:
2110                         pipe->methods = &ohci_device_isoc_methods;
2111                         return (ohci_setup_isoc(pipe));
2112                 case UE_BULK:
2113                         pipe->methods = &ohci_device_bulk_methods;
2114                         crit_enter();
2115                         ohci_add_ed(sed, sc->sc_bulk_head);
2116                         crit_exit();
2117                         break;
2118                 }
2119         }
2120         return (USBD_NORMAL_COMPLETION);
2121
2122  bad:
2123         if (std != NULL)
2124                 ohci_free_std(sc, std);
2125  bad1:
2126         if (sed != NULL)
2127                 ohci_free_sed(sc, sed);
2128  bad0:
2129         return (USBD_NOMEM);
2130
2131 }
2132
2133 /*
2134  * Close a reqular pipe.
2135  * Assumes that there are no pending transactions.
2136  */
2137 void
2138 ohci_close_pipe(usbd_pipe_handle pipe, ohci_soft_ed_t *head)
2139 {
2140         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2141         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2142         ohci_soft_ed_t *sed = opipe->sed;
2143
2144         crit_enter();
2145 #ifdef DIAGNOSTIC
2146         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
2147         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
2148             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK)) {
2149                 ohci_soft_td_t *std;
2150                 std = ohci_hash_find_td(sc, le32toh(sed->ed.ed_headp));
2151                 kprintf("ohci_close_pipe: pipe not empty sed=%p hd=0x%x "
2152                        "tl=0x%x pipe=%p, std=%p\n", sed,
2153                        (int)le32toh(sed->ed.ed_headp),
2154                        (int)le32toh(sed->ed.ed_tailp),
2155                        pipe, std);
2156 #ifdef USB_DEBUG
2157                 usbd_dump_pipe(&opipe->pipe);
2158 #endif
2159 #ifdef USB_DEBUG
2160                 ohci_dump_ed(sed);
2161                 if (std)
2162                         ohci_dump_td(std);
2163 #endif
2164                 usb_delay_ms(&sc->sc_bus, 2);
2165                 if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
2166                     (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
2167                         kprintf("ohci_close_pipe: pipe still not empty\n");
2168         }
2169 #endif
2170         ohci_rem_ed(sed, head);
2171         /* Make sure the host controller is not touching this ED */
2172         usb_delay_ms(&sc->sc_bus, 1);
2173         crit_exit();
2174         pipe->endpoint->savedtoggle =
2175             (le32toh(sed->ed.ed_headp) & OHCI_TOGGLECARRY) ? 1 : 0;
2176         ohci_free_sed(sc, opipe->sed);
2177 }
2178
2179 /*
2180  * Abort a device request.
2181  * If this routine is called from a critical section it guarantees that
2182  * the request will be removed from the hardware scheduling and that
2183  * the callback for it will be called with USBD_CANCELLED status.
2184  * It's impossible to guarantee that the requested transfer will not
2185  * have happened since the hardware runs concurrently.
2186  * If the transaction has already happened we rely on the ordinary
2187  * interrupt processing to process it.
2188  */
2189 void
2190 ohci_abort_xfer(usbd_xfer_handle xfer, usbd_status status)
2191 {
2192         struct ohci_xfer *oxfer = OXFER(xfer);
2193         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
2194         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
2195         ohci_soft_ed_t *sed = opipe->sed;
2196         ohci_soft_td_t *p, *n;
2197         ohci_physaddr_t headp;
2198         int hit;
2199
2200         DPRINTF(("ohci_abort_xfer: xfer=%p pipe=%p sed=%p\n", xfer, opipe,sed));
2201
2202         if (sc->sc_dying) {
2203                 /* If we're dying, just do the software part. */
2204                 crit_enter();
2205                 xfer->status = status;  /* make software ignore it */
2206                 usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
2207                 usb_rem_task(xfer->pipe->device, &OXFER(xfer)->abort_task);
2208                 usb_transfer_complete(xfer);
2209                 crit_exit();
2210         }
2211
2212         if (xfer->device->bus->intr_context /* || !curproc REMOVED DFly */)
2213                 panic("ohci_abort_xfer: not in process context");
2214
2215         /*
2216          * If an abort is already in progress then just wait for it to
2217          * complete and return.
2218          */
2219         if (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTING) {
2220                 DPRINTFN(2, ("ohci_abort_xfer: already aborting\n"));
2221                 /* No need to wait if we're aborting from a timeout. */
2222                 if (status == USBD_TIMEOUT)
2223                         return;
2224                 /* Override the status which might be USBD_TIMEOUT. */
2225                 xfer->status = status;
2226                 DPRINTFN(2, ("ohci_abort_xfer: waiting for abort to finish\n"));
2227                 oxfer->ohci_xfer_flags |= OHCI_XFER_ABORTWAIT;
2228                 while (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTING)
2229                         tsleep(&oxfer->ohci_xfer_flags, 0, "ohciaw", 0);
2230                 return;
2231         }
2232
2233         /*
2234          * Step 1: Make interrupt routine and hardware ignore xfer.
2235          */
2236         crit_enter();
2237         oxfer->ohci_xfer_flags |= OHCI_XFER_ABORTING;
2238         xfer->status = status;  /* make software ignore it */
2239         usb_uncallout(xfer->timeout_handle, ohci_timeout, xfer);
2240         usb_rem_task(xfer->pipe->device, &OXFER(xfer)->abort_task);
2241         crit_exit();
2242         DPRINTFN(1,("ohci_abort_xfer: stop ed=%p\n", sed));
2243         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* force hardware skip */
2244
2245         /*
2246          * Step 2: Wait until we know hardware has finished any possible
2247          * use of the xfer.  Also make sure the soft interrupt routine
2248          * has run.
2249          */
2250         usb_delay_ms(opipe->pipe.device->bus, 20); /* Hardware finishes in 1ms */
2251         crit_enter();
2252 #ifdef USB_USE_SOFTINTR
2253         sc->sc_softwake = 1;
2254 #endif /* USB_USE_SOFTINTR */
2255         usb_schedsoftintr(&sc->sc_bus);
2256 #ifdef USB_USE_SOFTINTR
2257         tsleep(&sc->sc_softwake, 0, "ohciab", 0);
2258 #endif /* USB_USE_SOFTINTR */
2259
2260         /*
2261          * Step 3: Remove any vestiges of the xfer from the hardware.
2262          * The complication here is that the hardware may have executed
2263          * beyond the xfer we're trying to abort.  So as we're scanning
2264          * the TDs of this xfer we check if the hardware points to
2265          * any of them.
2266          */
2267         p = xfer->hcpriv;
2268 #ifdef DIAGNOSTIC
2269         if (p == NULL) {
2270                 oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTING; /* XXX */
2271                 crit_exit();
2272                 kprintf("ohci_abort_xfer: hcpriv is NULL\n");
2273                 return;
2274         }
2275 #endif
2276 #ifdef USB_DEBUG
2277         if (ohcidebug > 1) {
2278                 DPRINTF(("ohci_abort_xfer: sed=\n"));
2279                 ohci_dump_ed(sed);
2280                 ohci_dump_tds(p);
2281         }
2282 #endif
2283         headp = le32toh(sed->ed.ed_headp) & OHCI_HEADMASK;
2284         hit = 0;
2285         for (; p->xfer == xfer; p = n) {
2286                 hit |= headp == p->physaddr;
2287                 n = p->nexttd;
2288                 ohci_free_std(sc, p);
2289         }
2290         /* Zap headp register if hardware pointed inside the xfer. */
2291         if (hit) {
2292                 DPRINTFN(1,("ohci_abort_xfer: set hd=0x08%x, tl=0x%08x\n",
2293                             (int)p->physaddr, (int)le32toh(sed->ed.ed_tailp)));
2294                 sed->ed.ed_headp = htole32(p->physaddr); /* unlink TDs */
2295         } else {
2296                 DPRINTFN(1,("ohci_abort_xfer: no hit\n"));
2297         }
2298
2299         /*
2300          * Step 4: Turn on hardware again.
2301          */
2302         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* remove hardware skip */
2303
2304         /*
2305          * Step 5: Execute callback.
2306          */
2307         /* Do the wakeup first to avoid touching the xfer after the callback. */
2308         oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTING;
2309         if (oxfer->ohci_xfer_flags & OHCI_XFER_ABORTWAIT) {
2310                 oxfer->ohci_xfer_flags &= ~OHCI_XFER_ABORTWAIT;
2311                 wakeup(&oxfer->ohci_xfer_flags);
2312         }
2313         usb_transfer_complete(xfer);
2314
2315         crit_exit();
2316 }
2317
2318 /*
2319  * Data structures and routines to emulate the root hub.
2320  */
2321 static usb_device_descriptor_t ohci_devd = {
2322         USB_DEVICE_DESCRIPTOR_SIZE,
2323         UDESC_DEVICE,           /* type */
2324         {0x00, 0x01},           /* USB version */
2325         UDCLASS_HUB,            /* class */
2326         UDSUBCLASS_HUB,         /* subclass */
2327         UDPROTO_FSHUB,          /* protocol */
2328         64,                     /* max packet */
2329         {0},{0},{0x00,0x01},    /* device id */
2330         1,2,0,                  /* string indicies */
2331         1                       /* # of configurations */
2332 };
2333
2334 static usb_config_descriptor_t ohci_confd = {
2335         USB_CONFIG_DESCRIPTOR_SIZE,
2336         UDESC_CONFIG,
2337         {USB_CONFIG_DESCRIPTOR_SIZE +
2338          USB_INTERFACE_DESCRIPTOR_SIZE +
2339          USB_ENDPOINT_DESCRIPTOR_SIZE},
2340         1,
2341         1,
2342         0,
2343         UC_SELF_POWERED,
2344         0                       /* max power */
2345 };
2346
2347 static usb_interface_descriptor_t ohci_ifcd = {
2348         USB_INTERFACE_DESCRIPTOR_SIZE,
2349         UDESC_INTERFACE,
2350         0,
2351         0,
2352         1,
2353         UICLASS_HUB,
2354         UISUBCLASS_HUB,
2355         UIPROTO_FSHUB,
2356         0
2357 };
2358
2359 static usb_endpoint_descriptor_t ohci_endpd = {
2360         USB_ENDPOINT_DESCRIPTOR_SIZE,
2361         UDESC_ENDPOINT,
2362         UE_DIR_IN | OHCI_INTR_ENDPT,
2363         UE_INTERRUPT,
2364         {8, 0},                 /* max packet */
2365         255
2366 };
2367
2368 static usb_hub_descriptor_t ohci_hubd = {
2369         USB_HUB_DESCRIPTOR_SIZE,
2370         UDESC_HUB,
2371         0,
2372         {0,0},
2373         0,
2374         0,
2375         {0},
2376 };
2377
2378 static int
2379 ohci_str(usb_string_descriptor_t *p, int l, const char *s)
2380 {
2381         int i;
2382
2383         if (l == 0)
2384                 return (0);
2385         p->bLength = 2 * strlen(s) + 2;
2386         if (l == 1)
2387                 return (1);
2388         p->bDescriptorType = UDESC_STRING;
2389         l -= 2;
2390         for (i = 0; s[i] && l > 1; i++, l -= 2)
2391                 USETW2(p->bString[i], 0, s[i]);
2392         return (2*i+2);
2393 }
2394
2395 /*
2396  * Simulate a hardware hub by handling all the necessary requests.
2397  */
2398 static usbd_status
2399 ohci_root_ctrl_transfer(usbd_xfer_handle xfer)
2400 {
2401         usbd_status err;
2402
2403         /* Insert last in queue. */
2404         err = usb_insert_transfer(xfer);
2405         if (err)
2406                 return (err);
2407
2408         /* Pipe isn't running, start first */
2409         return (ohci_root_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
2410 }
2411
2412 static usbd_status
2413 ohci_root_ctrl_start(usbd_xfer_handle xfer)
2414 {
2415         ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus;
2416         usb_device_request_t *req;
2417         void *buf = NULL;
2418         int port, i;
2419         int len, value, index, l, totlen = 0;
2420         usb_port_status_t ps;
2421         usb_hub_descriptor_t hubd;
2422         usbd_status err;
2423         u_int32_t v;
2424
2425         if (sc->sc_dying)
2426                 return (USBD_IOERROR);
2427
2428 #ifdef DIAGNOSTIC
2429         if (!(xfer->rqflags & URQ_REQUEST))
2430                 /* XXX panic */
2431                 return (USBD_INVAL);
2432 #endif
2433         req = &xfer->request;
2434
2435         DPRINTFN(4,("ohci_root_ctrl_control type=0x%02x request=%02x\n",
2436                     req->bmRequestType, req->bRequest));
2437
2438         len = UGETW(req->wLength);
2439         value = UGETW(req->wValue);
2440         index = UGETW(req->wIndex);
2441
2442         if (len != 0)
2443                 buf = KERNADDR(&xfer->dmabuf, 0);
2444
2445 #define C(x,y) ((x) | ((y) << 8))
2446         switch(C(req->bRequest, req->bmRequestType)) {
2447         case C(UR_CLEAR_FEATURE, UT_WRITE_DEVICE):
2448         case C(UR_CLEAR_FEATURE, UT_WRITE_INTERFACE):
2449         case C(UR_CLEAR_FEATURE, UT_WRITE_ENDPOINT):
2450                 /*
2451                  * DEVICE_REMOTE_WAKEUP and ENDPOINT_HALT are no-ops
2452                  * for the integrated root hub.
2453                  */
2454                 break;
2455         case C(UR_GET_CONFIG, UT_READ_DEVICE):
2456                 if (len > 0) {
2457                         *(u_int8_t *)buf = sc->sc_conf;
2458                         totlen = 1;
2459                 }
2460                 break;
2461         case C(UR_GET_DESCRIPTOR, UT_READ_DEVICE):
2462                 DPRINTFN(8,("ohci_root_ctrl_control wValue=0x%04x\n", value));
2463                 switch(value >> 8) {
2464                 case UDESC_DEVICE:
2465                         if ((value & 0xff) != 0) {
2466                                 err = USBD_IOERROR;
2467                                 goto ret;
2468                         }
2469                         totlen = l = min(len, USB_DEVICE_DESCRIPTOR_SIZE);
2470                         USETW(ohci_devd.idVendor, sc->sc_id_vendor);
2471                         memcpy(buf, &ohci_devd, l);
2472                         break;
2473                 case UDESC_CONFIG:
2474                         if ((value & 0xff) != 0) {
2475                                 err = USBD_IOERROR;
2476                                 goto ret;
2477                         }
2478                         totlen = l = min(len, USB_CONFIG_DESCRIPTOR_SIZE);
2479                         memcpy(buf, &ohci_confd, l);
2480                         buf = (char *)buf + l;
2481                         len -= l;
2482                         l = min(len, USB_INTERFACE_DESCRIPTOR_SIZE);
2483                         totlen += l;
2484                         memcpy(buf, &ohci_ifcd, l);
2485                         buf = (char *)buf + l;
2486                         len -= l;
2487                         l = min(len, USB_ENDPOINT_DESCRIPTOR_SIZE);
2488                         totlen += l;
2489                         memcpy(buf, &ohci_endpd, l);
2490                         break;
2491                 case UDESC_STRING:
2492                         if (len == 0)
2493                                 break;
2494                         *(u_int8_t *)buf = 0;
2495                         totlen = 1;
2496                         switch (value & 0xff) {
2497                         case 1: /* Vendor */
2498                                 totlen = ohci_str(buf, len, sc->sc_vendor);
2499                                 break;
2500                         case 2: /* Product */
2501                                 totlen = ohci_str(buf, len, "OHCI root hub");
2502                                 break;
2503                         }
2504                         break;
2505                 default:
2506                         err = USBD_IOERROR;
2507                         goto ret;
2508                 }
2509                 break;
2510         case C(UR_GET_INTERFACE, UT_READ_INTERFACE):
2511                 if (len > 0) {
2512                         *(u_int8_t *)buf = 0;
2513                         totlen = 1;
2514                 }
2515                 break;
2516         case C(UR_GET_STATUS, UT_READ_DEVICE):
2517                 if (len > 1) {
2518                         USETW(((usb_status_t *)buf)->wStatus,UDS_SELF_POWERED);
2519                         totlen = 2;
2520                 }
2521                 break;
2522         case C(UR_GET_STATUS, UT_READ_INTERFACE):
2523         case C(UR_GET_STATUS, UT_READ_ENDPOINT):
2524                 if (len > 1) {
2525                         USETW(((usb_status_t *)buf)->wStatus, 0);
2526                         totlen = 2;
2527                 }
2528                 break;
2529         case C(UR_SET_ADDRESS, UT_WRITE_DEVICE):
2530                 if (value >= USB_MAX_DEVICES) {
2531                         err = USBD_IOERROR;
2532                         goto ret;
2533                 }
2534                 sc->sc_addr = value;
2535                 break;
2536         case C(UR_SET_CONFIG, UT_WRITE_DEVICE):
2537                 if (value != 0 && value != 1) {
2538                         err = USBD_IOERROR;
2539                         goto ret;
2540                 }
2541                 sc->sc_conf = value;
2542                 break;
2543         case C(UR_SET_DESCRIPTOR, UT_WRITE_DEVICE):
2544                 break;
2545         case C(UR_SET_FEATURE, UT_WRITE_DEVICE):
2546         case C(UR_SET_FEATURE, UT_WRITE_INTERFACE):
2547         case C(UR_SET_FEATURE, UT_WRITE_ENDPOINT):
2548                 err = USBD_IOERROR;
2549                 goto ret;
2550         case C(UR_SET_INTERFACE, UT_WRITE_INTERFACE):
2551                 break;
2552         case C(UR_SYNCH_FRAME, UT_WRITE_ENDPOINT):
2553                 break;
2554         /* Hub requests */
2555         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_DEVICE):
2556                 break;
2557         case C(UR_CLEAR_FEATURE, UT_WRITE_CLASS_OTHER):
2558                 DPRINTFN(8, ("ohci_root_ctrl_control: UR_CLEAR_PORT_FEATURE "
2559                              "port=%d feature=%d\n",
2560                              index, value));
2561                 if (index < 1 || index > sc->sc_noport) {
2562                         err = USBD_IOERROR;
2563                         goto ret;
2564                 }
2565                 port = OHCI_RH_PORT_STATUS(index);
2566                 switch(value) {
2567                 case UHF_PORT_ENABLE:
2568                         OWRITE4(sc, port, UPS_CURRENT_CONNECT_STATUS);
2569                         break;
2570                 case UHF_PORT_SUSPEND:
2571                         OWRITE4(sc, port, UPS_OVERCURRENT_INDICATOR);
2572                         break;
2573                 case UHF_PORT_POWER:
2574                         /* Yes, writing to the LOW_SPEED bit clears power. */
2575                         OWRITE4(sc, port, UPS_LOW_SPEED);
2576                         break;
2577                 case UHF_C_PORT_CONNECTION:
2578                         OWRITE4(sc, port, UPS_C_CONNECT_STATUS << 16);
2579                         break;
2580                 case UHF_C_PORT_ENABLE:
2581                         OWRITE4(sc, port, UPS_C_PORT_ENABLED << 16);
2582                         break;
2583                 case UHF_C_PORT_SUSPEND:
2584                         OWRITE4(sc, port, UPS_C_SUSPEND << 16);
2585                         break;
2586                 case UHF_C_PORT_OVER_CURRENT:
2587                         OWRITE4(sc, port, UPS_C_OVERCURRENT_INDICATOR << 16);
2588                         break;
2589                 case UHF_C_PORT_RESET:
2590                         OWRITE4(sc, port, UPS_C_PORT_RESET << 16);
2591                         break;
2592                 default:
2593                         err = USBD_IOERROR;
2594                         goto ret;
2595                 }
2596                 switch(value) {
2597                 case UHF_C_PORT_CONNECTION:
2598                 case UHF_C_PORT_ENABLE:
2599                 case UHF_C_PORT_SUSPEND:
2600                 case UHF_C_PORT_OVER_CURRENT:
2601                 case UHF_C_PORT_RESET:
2602                         /* Enable RHSC interrupt if condition is cleared. */
2603                         if ((OREAD4(sc, port) >> 16) == 0)
2604                                 ohci_rhsc_able(sc, 1);
2605                         break;
2606                 default:
2607                         break;
2608                 }
2609                 break;
2610         case C(UR_GET_DESCRIPTOR, UT_READ_CLASS_DEVICE):
2611                 if ((value & 0xff) != 0) {
2612                         err = USBD_IOERROR;
2613                         goto ret;
2614                 }
2615                 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_A);
2616                 hubd = ohci_hubd;
2617                 hubd.bNbrPorts = sc->sc_noport;
2618                 USETW(hubd.wHubCharacteristics,
2619                       (v & OHCI_NPS ? UHD_PWR_NO_SWITCH :
2620                        v & OHCI_PSM ? UHD_PWR_GANGED : UHD_PWR_INDIVIDUAL)
2621                       /* XXX overcurrent */
2622                       );
2623                 hubd.bPwrOn2PwrGood = OHCI_GET_POTPGT(v);
2624                 v = OREAD4(sc, OHCI_RH_DESCRIPTOR_B);
2625                 for (i = 0, l = sc->sc_noport; l > 0; i++, l -= 8, v >>= 8)
2626                         hubd.DeviceRemovable[i++] = (u_int8_t)v;
2627                 hubd.bDescLength = USB_HUB_DESCRIPTOR_SIZE + i;
2628                 l = min(len, hubd.bDescLength);
2629                 totlen = l;
2630                 memcpy(buf, &hubd, l);
2631                 break;
2632         case C(UR_GET_STATUS, UT_READ_CLASS_DEVICE):
2633                 if (len != 4) {
2634                         err = USBD_IOERROR;
2635                         goto ret;
2636                 }
2637                 memset(buf, 0, len); /* ? XXX */
2638                 totlen = len;
2639                 break;
2640         case C(UR_GET_STATUS, UT_READ_CLASS_OTHER):
2641                 DPRINTFN(8,("ohci_root_ctrl_transfer: get port status i=%d\n",
2642                             index));
2643                 if (index < 1 || index > sc->sc_noport) {
2644                         err = USBD_IOERROR;
2645                         goto ret;
2646                 }
2647                 if (len != 4) {
2648                         err = USBD_IOERROR;
2649                         goto ret;
2650                 }
2651                 v = OREAD4(sc, OHCI_RH_PORT_STATUS(index));
2652                 DPRINTFN(8,("ohci_root_ctrl_transfer: port status=0x%04x\n",
2653                             v));
2654                 USETW(ps.wPortStatus, v);
2655                 USETW(ps.wPortChange, v >> 16);
2656                 l = min(len, sizeof ps);
2657                 memcpy(buf, &ps, l);
2658                 totlen = l;
2659                 break;
2660         case C(UR_SET_DESCRIPTOR, UT_WRITE_CLASS_DEVICE):
2661                 err = USBD_IOERROR;
2662                 goto ret;
2663         case C(UR_SET_FEATURE, UT_WRITE_CLASS_DEVICE):
2664                 break;
2665         case C(UR_SET_FEATURE, UT_WRITE_CLASS_OTHER):
2666                 if (index < 1 || index > sc->sc_noport) {
2667                         err = USBD_IOERROR;
2668                         goto ret;
2669                 }
2670                 port = OHCI_RH_PORT_STATUS(index);
2671                 switch(value) {
2672                 case UHF_PORT_ENABLE:
2673                         OWRITE4(sc, port, UPS_PORT_ENABLED);
2674                         break;
2675                 case UHF_PORT_SUSPEND:
2676                         OWRITE4(sc, port, UPS_SUSPEND);
2677                         break;
2678                 case UHF_PORT_RESET:
2679                         DPRINTFN(5,("ohci_root_ctrl_transfer: reset port %d\n",
2680                                     index));
2681                         OWRITE4(sc, port, UPS_RESET);
2682                         for (i = 0; i < 5; i++) {
2683                                 usb_delay_ms(&sc->sc_bus,
2684                                              USB_PORT_ROOT_RESET_DELAY);
2685                                 if (sc->sc_dying) {
2686                                         err = USBD_IOERROR;
2687                                         goto ret;
2688                                 }
2689                                 if ((OREAD4(sc, port) & UPS_RESET) == 0)
2690                                         break;
2691                         }
2692                         DPRINTFN(8,("ohci port %d reset, status = 0x%04x\n",
2693                                     index, OREAD4(sc, port)));
2694                         break;
2695                 case UHF_PORT_POWER:
2696                         DPRINTFN(2,("ohci_root_ctrl_transfer: set port power "
2697                                     "%d\n", index));
2698                         OWRITE4(sc, port, UPS_PORT_POWER);
2699                         break;
2700                 default:
2701                         err = USBD_IOERROR;
2702                         goto ret;
2703                 }
2704                 break;
2705         default:
2706                 err = USBD_IOERROR;
2707                 goto ret;
2708         }
2709         xfer->actlen = totlen;
2710         err = USBD_NORMAL_COMPLETION;
2711  ret:
2712         xfer->status = err;
2713         crit_enter();
2714         usb_transfer_complete(xfer);
2715         crit_exit();
2716         return (USBD_IN_PROGRESS);
2717 }
2718
2719 /* Abort a root control request. */
2720 static void
2721 ohci_root_ctrl_abort(usbd_xfer_handle xfer)
2722 {
2723         /* Nothing to do, all transfers are synchronous. */
2724 }
2725
2726 /* Close the root pipe. */
2727 static void
2728 ohci_root_ctrl_close(usbd_pipe_handle pipe)
2729 {
2730         DPRINTF(("ohci_root_ctrl_close\n"));
2731         /* Nothing to do. */
2732 }
2733
2734 static usbd_status
2735 ohci_root_intr_transfer(usbd_xfer_handle xfer)
2736 {
2737         usbd_status err;
2738
2739         /* Insert last in queue. */
2740         err = usb_insert_transfer(xfer);
2741         if (err)
2742                 return (err);
2743
2744         /* Pipe isn't running, start first */
2745         return (ohci_root_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
2746 }
2747
2748 static usbd_status
2749 ohci_root_intr_start(usbd_xfer_handle xfer)
2750 {
2751         usbd_pipe_handle pipe = xfer->pipe;
2752         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2753
2754         if (sc->sc_dying)
2755                 return (USBD_IOERROR);
2756
2757         sc->sc_intrxfer = xfer;
2758
2759         return (USBD_IN_PROGRESS);
2760 }
2761
2762 /* Abort a root interrupt request. */
2763 static void
2764 ohci_root_intr_abort(usbd_xfer_handle xfer)
2765 {
2766         if (xfer->pipe->intrxfer == xfer) {
2767                 DPRINTF(("ohci_root_intr_abort: remove\n"));
2768                 xfer->pipe->intrxfer = NULL;
2769         }
2770         xfer->status = USBD_CANCELLED;
2771         crit_enter();
2772         usb_transfer_complete(xfer);
2773         crit_exit();
2774 }
2775
2776 /* Close the root pipe. */
2777 static void
2778 ohci_root_intr_close(usbd_pipe_handle pipe)
2779 {
2780         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2781
2782         DPRINTF(("ohci_root_intr_close\n"));
2783
2784         sc->sc_intrxfer = NULL;
2785 }
2786
2787 /************************/
2788
2789 static usbd_status
2790 ohci_device_ctrl_transfer(usbd_xfer_handle xfer)
2791 {
2792         usbd_status err;
2793
2794         /* Insert last in queue. */
2795         err = usb_insert_transfer(xfer);
2796         if (err)
2797                 return (err);
2798
2799         /* Pipe isn't running, start first */
2800         return (ohci_device_ctrl_start(STAILQ_FIRST(&xfer->pipe->queue)));
2801 }
2802
2803 static usbd_status
2804 ohci_device_ctrl_start(usbd_xfer_handle xfer)
2805 {
2806         ohci_softc_t *sc = (ohci_softc_t *)xfer->pipe->device->bus;
2807         usbd_status err;
2808
2809         if (sc->sc_dying)
2810                 return (USBD_IOERROR);
2811
2812 #ifdef DIAGNOSTIC
2813         if (!(xfer->rqflags & URQ_REQUEST)) {
2814                 /* XXX panic */
2815                 kprintf("ohci_device_ctrl_transfer: not a request\n");
2816                 return (USBD_INVAL);
2817         }
2818 #endif
2819
2820         err = ohci_device_request(xfer);
2821         if (err)
2822                 return (err);
2823
2824         if (sc->sc_bus.use_polling)
2825                 ohci_waitintr(sc, xfer);
2826         return (USBD_IN_PROGRESS);
2827 }
2828
2829 /* Abort a device control request. */
2830 static void
2831 ohci_device_ctrl_abort(usbd_xfer_handle xfer)
2832 {
2833         DPRINTF(("ohci_device_ctrl_abort: xfer=%p\n", xfer));
2834         ohci_abort_xfer(xfer, USBD_CANCELLED);
2835 }
2836
2837 /* Close a device control pipe. */
2838 static void
2839 ohci_device_ctrl_close(usbd_pipe_handle pipe)
2840 {
2841         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2842         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2843
2844         DPRINTF(("ohci_device_ctrl_close: pipe=%p\n", pipe));
2845         ohci_close_pipe(pipe, sc->sc_ctrl_head);
2846         ohci_free_std(sc, opipe->tail.td);
2847 }
2848
2849 /************************/
2850
2851 static void
2852 ohci_device_clear_toggle(usbd_pipe_handle pipe)
2853 {
2854         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2855
2856         opipe->sed->ed.ed_headp &= htole32(~OHCI_TOGGLECARRY);
2857 }
2858
2859 static void
2860 ohci_noop(usbd_pipe_handle pipe)
2861 {
2862 }
2863
2864 static usbd_status
2865 ohci_device_bulk_transfer(usbd_xfer_handle xfer)
2866 {
2867         usbd_status err;
2868
2869         /* Insert last in queue. */
2870         err = usb_insert_transfer(xfer);
2871         if (err)
2872                 return (err);
2873
2874         /* Pipe isn't running, start first */
2875         return (ohci_device_bulk_start(STAILQ_FIRST(&xfer->pipe->queue)));
2876 }
2877
2878 static usbd_status
2879 ohci_device_bulk_start(usbd_xfer_handle xfer)
2880 {
2881         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
2882         usbd_device_handle dev = opipe->pipe.device;
2883         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
2884         int addr = dev->address;
2885         ohci_soft_td_t *data, *tail, *tdp;
2886         ohci_soft_ed_t *sed;
2887         int len, isread, endpt;
2888         usbd_status err;
2889
2890         if (sc->sc_dying)
2891                 return (USBD_IOERROR);
2892
2893 #ifdef DIAGNOSTIC
2894         if (xfer->rqflags & URQ_REQUEST) {
2895                 /* XXX panic */
2896                 kprintf("ohci_device_bulk_start: a request\n");
2897                 return (USBD_INVAL);
2898         }
2899 #endif
2900
2901         len = xfer->length;
2902         endpt = xfer->pipe->endpoint->edesc->bEndpointAddress;
2903         isread = UE_GET_DIR(endpt) == UE_DIR_IN;
2904         sed = opipe->sed;
2905
2906         DPRINTFN(4,("ohci_device_bulk_start: xfer=%p len=%d isread=%d "
2907                     "flags=%d endpt=%d\n", xfer, len, isread, xfer->flags,
2908                     endpt));
2909
2910         opipe->u.bulk.isread = isread;
2911         opipe->u.bulk.length = len;
2912
2913         /* Update device address */
2914         sed->ed.ed_flags = htole32(
2915                 (le32toh(sed->ed.ed_flags) & ~OHCI_ED_ADDRMASK) |
2916                 OHCI_ED_SET_FA(addr));
2917
2918         /* Allocate a chain of new TDs (including a new tail). */
2919         data = opipe->tail.td;
2920         err = ohci_alloc_std_chain(opipe, sc, len, isread, xfer,
2921                   data, &tail);
2922         /* We want interrupt at the end of the transfer. */
2923         tail->td.td_flags &= htole32(~OHCI_TD_INTR_MASK);
2924         tail->td.td_flags |= htole32(OHCI_TD_SET_DI(1));
2925         tail->flags |= OHCI_CALL_DONE;
2926         tail = tail->nexttd;    /* point at sentinel */
2927         if (err)
2928                 return (err);
2929
2930         tail->xfer = NULL;
2931         xfer->hcpriv = data;
2932
2933         DPRINTFN(4,("ohci_device_bulk_start: ed_flags=0x%08x td_flags=0x%08x "
2934                     "td_cbp=0x%08x td_be=0x%08x\n",
2935                     (int)le32toh(sed->ed.ed_flags),
2936                     (int)le32toh(data->td.td_flags),
2937                     (int)le32toh(data->td.td_cbp),
2938                     (int)le32toh(data->td.td_be)));
2939
2940 #ifdef USB_DEBUG
2941         if (ohcidebug > 5) {
2942                 ohci_dump_ed(sed);
2943                 ohci_dump_tds(data);
2944         }
2945 #endif
2946
2947         /* Insert ED in schedule */
2948         crit_enter();
2949         for (tdp = data; tdp != tail; tdp = tdp->nexttd) {
2950                 tdp->xfer = xfer;
2951         }
2952         sed->ed.ed_tailp = htole32(tail->physaddr);
2953         opipe->tail.td = tail;
2954         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
2955         OWRITE4(sc, OHCI_COMMAND_STATUS, OHCI_BLF);
2956         if (xfer->timeout && !sc->sc_bus.use_polling) {
2957                 usb_callout(xfer->timeout_handle, MS_TO_TICKS(xfer->timeout),
2958                             ohci_timeout, xfer);
2959         }
2960
2961 #if 0
2962 /* This goes wrong if we are too slow. */
2963         if (ohcidebug > 10) {
2964                 delay(10000);
2965                 DPRINTF(("ohci_device_intr_transfer: status=%x\n",
2966                          OREAD4(sc, OHCI_COMMAND_STATUS)));
2967                 ohci_dump_ed(sed);
2968                 ohci_dump_tds(data);
2969         }
2970 #endif
2971
2972         crit_exit();
2973
2974         if (sc->sc_bus.use_polling)
2975                 ohci_waitintr(sc, xfer);
2976
2977         return (USBD_IN_PROGRESS);
2978 }
2979
2980 static void
2981 ohci_device_bulk_abort(usbd_xfer_handle xfer)
2982 {
2983         DPRINTF(("ohci_device_bulk_abort: xfer=%p\n", xfer));
2984         ohci_abort_xfer(xfer, USBD_CANCELLED);
2985 }
2986
2987 /*
2988  * Close a device bulk pipe.
2989  */
2990 static void
2991 ohci_device_bulk_close(usbd_pipe_handle pipe)
2992 {
2993         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
2994         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
2995
2996         DPRINTF(("ohci_device_bulk_close: pipe=%p\n", pipe));
2997         ohci_close_pipe(pipe, sc->sc_bulk_head);
2998         ohci_free_std(sc, opipe->tail.td);
2999 }
3000
3001 /************************/
3002
3003 static usbd_status
3004 ohci_device_intr_transfer(usbd_xfer_handle xfer)
3005 {
3006         usbd_status err;
3007
3008         /* Insert last in queue. */
3009         err = usb_insert_transfer(xfer);
3010         if (err)
3011                 return (err);
3012
3013         /* Pipe isn't running, start first */
3014         return (ohci_device_intr_start(STAILQ_FIRST(&xfer->pipe->queue)));
3015 }
3016
3017 static usbd_status
3018 ohci_device_intr_start(usbd_xfer_handle xfer)
3019 {
3020         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3021         usbd_device_handle dev = opipe->pipe.device;
3022         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
3023         ohci_soft_ed_t *sed = opipe->sed;
3024         ohci_soft_td_t *data, *tail;
3025         int len;
3026
3027         if (sc->sc_dying)
3028                 return (USBD_IOERROR);
3029
3030         DPRINTFN(3, ("ohci_device_intr_transfer: xfer=%p len=%d "
3031                      "flags=%d priv=%p\n",
3032                      xfer, xfer->length, xfer->flags, xfer->priv));
3033
3034 #ifdef DIAGNOSTIC
3035         if (xfer->rqflags & URQ_REQUEST)
3036                 panic("ohci_device_intr_transfer: a request");
3037 #endif
3038
3039         len = xfer->length;
3040
3041         data = opipe->tail.td;
3042         tail = ohci_alloc_std(sc);
3043         if (tail == NULL)
3044                 return (USBD_NOMEM);
3045         tail->xfer = NULL;
3046
3047         data->td.td_flags = htole32(
3048                 OHCI_TD_IN | OHCI_TD_NOCC |
3049                 OHCI_TD_SET_DI(1) | OHCI_TD_TOGGLE_CARRY);
3050         if (xfer->flags & USBD_SHORT_XFER_OK)
3051                 data->td.td_flags |= htole32(OHCI_TD_R);
3052         data->td.td_cbp = htole32(DMAADDR(&xfer->dmabuf, 0));
3053         data->nexttd = tail;
3054         data->td.td_nexttd = htole32(tail->physaddr);
3055         data->td.td_be = htole32(le32toh(data->td.td_cbp) + len - 1);
3056         data->len = len;
3057         data->xfer = xfer;
3058         data->flags = OHCI_CALL_DONE | OHCI_ADD_LEN;
3059         xfer->hcpriv = data;
3060
3061 #ifdef USB_DEBUG
3062         if (ohcidebug > 5) {
3063                 DPRINTF(("ohci_device_intr_transfer:\n"));
3064                 ohci_dump_ed(sed);
3065                 ohci_dump_tds(data);
3066         }
3067 #endif
3068
3069         /* Insert ED in schedule */
3070         crit_enter();
3071         sed->ed.ed_tailp = htole32(tail->physaddr);
3072         opipe->tail.td = tail;
3073         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
3074
3075 #if 0
3076 /*
3077  * This goes horribly wrong, printing thousands of descriptors,
3078  * because false references are followed due to the fact that the
3079  * TD is gone.
3080  */
3081         if (ohcidebug > 5) {
3082                 usb_delay_ms(&sc->sc_bus, 5);
3083                 DPRINTF(("ohci_device_intr_transfer: status=%x\n",
3084                          OREAD4(sc, OHCI_COMMAND_STATUS)));
3085                 ohci_dump_ed(sed);
3086                 ohci_dump_tds(data);
3087         }
3088 #endif
3089         crit_exit();
3090
3091         return (USBD_IN_PROGRESS);
3092 }
3093
3094 /* Abort a device control request. */
3095 static void
3096 ohci_device_intr_abort(usbd_xfer_handle xfer)
3097 {
3098         if (xfer->pipe->intrxfer == xfer) {
3099                 DPRINTF(("ohci_device_intr_abort: remove\n"));
3100                 xfer->pipe->intrxfer = NULL;
3101         }
3102         ohci_abort_xfer(xfer, USBD_CANCELLED);
3103 }
3104
3105 /* Close a device interrupt pipe. */
3106 static void
3107 ohci_device_intr_close(usbd_pipe_handle pipe)
3108 {
3109         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3110         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3111         int nslots = opipe->u.intr.nslots;
3112         int pos = opipe->u.intr.pos;
3113         int j;
3114         ohci_soft_ed_t *p, *sed = opipe->sed;
3115
3116         DPRINTFN(1,("ohci_device_intr_close: pipe=%p nslots=%d pos=%d\n",
3117                     pipe, nslots, pos));
3118         crit_enter();
3119         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP);
3120         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
3121             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
3122                 usb_delay_ms(&sc->sc_bus, 2);
3123 #ifdef DIAGNOSTIC
3124         if ((le32toh(sed->ed.ed_tailp) & OHCI_HEADMASK) !=
3125             (le32toh(sed->ed.ed_headp) & OHCI_HEADMASK))
3126                 panic("%s: Intr pipe %p still has TDs queued",
3127                         device_get_nameunit(sc->sc_bus.bdev), pipe);
3128 #endif
3129
3130         for (p = sc->sc_eds[pos]; p && p->next != sed; p = p->next)
3131                 ;
3132 #ifdef DIAGNOSTIC
3133         if (p == NULL)
3134                 panic("ohci_device_intr_close: ED not found");
3135 #endif
3136         p->next = sed->next;
3137         p->ed.ed_nexted = sed->ed.ed_nexted;
3138         crit_exit();
3139
3140         for (j = 0; j < nslots; j++)
3141                 --sc->sc_bws[(pos * nslots + j) % OHCI_NO_INTRS];
3142
3143         ohci_free_std(sc, opipe->tail.td);
3144         ohci_free_sed(sc, opipe->sed);
3145 }
3146
3147 static usbd_status
3148 ohci_device_setintr(ohci_softc_t *sc, struct ohci_pipe *opipe, int ival)
3149 {
3150         int i, j, best;
3151         u_int npoll, slow, shigh, nslots;
3152         u_int bestbw, bw;
3153         ohci_soft_ed_t *hsed, *sed = opipe->sed;
3154
3155         DPRINTFN(2, ("ohci_setintr: pipe=%p\n", opipe));
3156         if (ival == 0) {
3157                 kprintf("ohci_setintr: 0 interval\n");
3158                 return (USBD_INVAL);
3159         }
3160
3161         npoll = OHCI_NO_INTRS;
3162         while (npoll > ival)
3163                 npoll /= 2;
3164         DPRINTFN(2, ("ohci_setintr: ival=%d npoll=%d\n", ival, npoll));
3165
3166         /*
3167          * We now know which level in the tree the ED must go into.
3168          * Figure out which slot has most bandwidth left over.
3169          * Slots to examine:
3170          * npoll
3171          * 1    0
3172          * 2    1 2
3173          * 4    3 4 5 6
3174          * 8    7 8 9 10 11 12 13 14
3175          * N    (N-1) .. (N-1+N-1)
3176          */
3177         slow = npoll-1;
3178         shigh = slow + npoll;
3179         nslots = OHCI_NO_INTRS / npoll;
3180         for (best = i = slow, bestbw = ~0; i < shigh; i++) {
3181                 bw = 0;
3182                 for (j = 0; j < nslots; j++)
3183                         bw += sc->sc_bws[(i * nslots + j) % OHCI_NO_INTRS];
3184                 if (bw < bestbw) {
3185                         best = i;
3186                         bestbw = bw;
3187                 }
3188         }
3189         DPRINTFN(2, ("ohci_setintr: best=%d(%d..%d) bestbw=%d\n",
3190                      best, slow, shigh, bestbw));
3191
3192         crit_enter();
3193         hsed = sc->sc_eds[best];
3194         sed->next = hsed->next;
3195         sed->ed.ed_nexted = hsed->ed.ed_nexted;
3196         hsed->next = sed;
3197         hsed->ed.ed_nexted = htole32(sed->physaddr);
3198         crit_exit();
3199
3200         for (j = 0; j < nslots; j++)
3201                 ++sc->sc_bws[(best * nslots + j) % OHCI_NO_INTRS];
3202         opipe->u.intr.nslots = nslots;
3203         opipe->u.intr.pos = best;
3204
3205         DPRINTFN(5, ("ohci_setintr: returns %p\n", opipe));
3206         return (USBD_NORMAL_COMPLETION);
3207 }
3208
3209 /***********************/
3210
3211 usbd_status
3212 ohci_device_isoc_transfer(usbd_xfer_handle xfer)
3213 {
3214         usbd_status err;
3215
3216         DPRINTFN(5,("ohci_device_isoc_transfer: xfer=%p\n", xfer));
3217
3218         /* Put it on our queue, */
3219         err = usb_insert_transfer(xfer);
3220
3221         /* bail out on error, */
3222         if (err && err != USBD_IN_PROGRESS)
3223                 return (err);
3224
3225         /* XXX should check inuse here */
3226
3227         /* insert into schedule, */
3228         ohci_device_isoc_enter(xfer);
3229
3230         /* and start if the pipe wasn't running */
3231         if (!err)
3232                 ohci_device_isoc_start(STAILQ_FIRST(&xfer->pipe->queue));
3233
3234         return (err);
3235 }
3236
3237 void
3238 ohci_device_isoc_enter(usbd_xfer_handle xfer)
3239 {
3240         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3241         usbd_device_handle dev = opipe->pipe.device;
3242         ohci_softc_t *sc = (ohci_softc_t *)dev->bus;
3243         ohci_soft_ed_t *sed = opipe->sed;
3244         struct iso *iso = &opipe->u.iso;
3245         struct ohci_xfer *oxfer = (struct ohci_xfer *)xfer;
3246         ohci_soft_itd_t *sitd, *nsitd;
3247         ohci_physaddr_t buf, offs, noffs, bp0, tdphys;
3248         int i, ncur, nframes;
3249
3250         DPRINTFN(1,("ohci_device_isoc_enter: used=%d next=%d xfer=%p "
3251                     "nframes=%d\n",
3252                     iso->inuse, iso->next, xfer, xfer->nframes));
3253
3254         if (sc->sc_dying)
3255                 return;
3256
3257         if (iso->next == -1) {
3258                 /* Not in use yet, schedule it a few frames ahead. */
3259                 iso->next = le32toh(sc->sc_hcca->hcca_frame_number) + 5;
3260                 DPRINTFN(2,("ohci_device_isoc_enter: start next=%d\n",
3261                             iso->next));
3262         }
3263
3264         if (xfer->hcpriv) {
3265                 crit_enter();
3266                 for (sitd = xfer->hcpriv; sitd != NULL && sitd->xfer == xfer;
3267                      sitd = sitd->nextitd)
3268                         ohci_free_sitd(sc, sitd); /* Free ITDs in prev xfer*/
3269                 crit_exit();
3270
3271                 if (sitd == NULL) {
3272                         sitd = ohci_alloc_sitd(sc);
3273                         if (sitd == NULL)
3274                                 panic("cant alloc isoc");
3275                         opipe->tail.itd = sitd;
3276                         tdphys = sitd->physaddr;
3277                         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* Stop*/
3278                         sed->ed.ed_headp =
3279                         sed->ed.ed_tailp = htole32(tdphys);
3280                         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* Start.*/
3281                 }
3282         }
3283
3284         sitd = opipe->tail.itd;
3285         buf = DMAADDR(&xfer->dmabuf, 0);
3286         bp0 = OHCI_PAGE(buf);
3287         offs = OHCI_PAGE_OFFSET(buf);
3288         nframes = xfer->nframes;
3289         xfer->hcpriv = sitd;
3290         for (i = ncur = 0; i < nframes; i++, ncur++) {
3291                 noffs = offs + xfer->frlengths[i];
3292                 if (ncur == OHCI_ITD_NOFFSET || /* all offsets used */
3293                     OHCI_PAGE(buf + noffs) > bp0 + OHCI_PAGE_SIZE) { /* too many page crossings */
3294
3295                         /* Allocate next ITD */
3296                         nsitd = ohci_alloc_sitd(sc);
3297                         if (nsitd == NULL) {
3298                                 /* XXX what now? */
3299                                 kprintf("%s: isoc TD alloc failed\n",
3300                                        device_get_nameunit(sc->sc_bus.bdev));
3301                                 return;
3302                         }
3303
3304                         /* Fill current ITD */
3305                         sitd->itd.itd_flags = htole32(
3306                                 OHCI_ITD_NOCC |
3307                                 OHCI_ITD_SET_SF(iso->next) |
3308                                 OHCI_ITD_SET_DI(6) | /* delay intr a little */
3309                                 OHCI_ITD_SET_FC(ncur));
3310                         sitd->itd.itd_bp0 = htole32(bp0);
3311                         sitd->nextitd = nsitd;
3312                         sitd->itd.itd_nextitd = htole32(nsitd->physaddr);
3313                         sitd->itd.itd_be = htole32(bp0 + offs - 1);
3314                         sitd->xfer = xfer;
3315                         sitd->flags = OHCI_ITD_ACTIVE;
3316
3317                         sitd = nsitd;
3318                         iso->next = iso->next + ncur;
3319                         bp0 = OHCI_PAGE(buf + offs);
3320                         ncur = 0;
3321                 }
3322                 sitd->itd.itd_offset[ncur] = htole16(OHCI_ITD_MK_OFFS(offs));
3323                 offs = noffs;
3324         }
3325         nsitd = ohci_alloc_sitd(sc);
3326         if (nsitd == NULL) {
3327                 /* XXX what now? */
3328                 kprintf("%s: isoc TD alloc failed\n",
3329                        device_get_nameunit(sc->sc_bus.bdev));
3330                 return;
3331         }
3332         /* Fixup last used ITD */
3333         sitd->itd.itd_flags = htole32(
3334                 OHCI_ITD_NOCC |
3335                 OHCI_ITD_SET_SF(iso->next) |
3336                 OHCI_ITD_SET_DI(0) |
3337                 OHCI_ITD_SET_FC(ncur));
3338         sitd->itd.itd_bp0 = htole32(bp0);
3339         sitd->nextitd = nsitd;
3340         sitd->itd.itd_nextitd = htole32(nsitd->physaddr);
3341         sitd->itd.itd_be = htole32(bp0 + offs - 1);
3342         sitd->xfer = xfer;
3343         sitd->flags = OHCI_CALL_DONE | OHCI_ITD_ACTIVE;
3344
3345         iso->next = iso->next + ncur;
3346         iso->inuse += nframes;
3347
3348         xfer->actlen = offs;    /* XXX pretend we did it all */
3349
3350         xfer->status = USBD_IN_PROGRESS;
3351
3352         oxfer->ohci_xfer_flags |= OHCI_ISOC_DIRTY;
3353
3354 #ifdef USB_DEBUG
3355         if (ohcidebug > 5) {
3356                 DPRINTF(("ohci_device_isoc_enter: frame=%d\n",
3357                          le32toh(sc->sc_hcca->hcca_frame_number)));
3358                 ohci_dump_itds(xfer->hcpriv);
3359                 ohci_dump_ed(sed);
3360         }
3361 #endif
3362
3363         crit_enter();
3364         sed->ed.ed_tailp = htole32(nsitd->physaddr);
3365         opipe->tail.itd = nsitd;
3366         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);
3367         crit_exit();
3368
3369 #ifdef USB_DEBUG
3370         if (ohcidebug > 5) {
3371                 delay(150000);
3372                 DPRINTF(("ohci_device_isoc_enter: after frame=%d\n",
3373                          le32toh(sc->sc_hcca->hcca_frame_number)));
3374                 ohci_dump_itds(xfer->hcpriv);
3375                 ohci_dump_ed(sed);
3376         }
3377 #endif
3378 }
3379
3380 usbd_status
3381 ohci_device_isoc_start(usbd_xfer_handle xfer)
3382 {
3383         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3384         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
3385         ohci_soft_ed_t *sed;
3386
3387         DPRINTFN(5,("ohci_device_isoc_start: xfer=%p\n", xfer));
3388
3389         if (sc->sc_dying)
3390                 return (USBD_IOERROR);
3391
3392 #ifdef DIAGNOSTIC
3393         if (xfer->status != USBD_IN_PROGRESS)
3394                 kprintf("ohci_device_isoc_start: not in progress %p\n", xfer);
3395 #endif
3396
3397         /* XXX anything to do? */
3398
3399         crit_enter();
3400         sed = opipe->sed;  /*  Turn off ED skip-bit to start processing */
3401         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP);    /* ED's ITD list.*/
3402         crit_exit();
3403
3404         return (USBD_IN_PROGRESS);
3405 }
3406
3407 void
3408 ohci_device_isoc_abort(usbd_xfer_handle xfer)
3409 {
3410         struct ohci_pipe *opipe = (struct ohci_pipe *)xfer->pipe;
3411         ohci_softc_t *sc = (ohci_softc_t *)opipe->pipe.device->bus;
3412         ohci_soft_ed_t *sed;
3413         ohci_soft_itd_t *sitd, *tmp_sitd;
3414         int undone, num_sitds;
3415
3416         crit_enter();
3417         opipe->aborting = 1;
3418
3419         DPRINTFN(1,("ohci_device_isoc_abort: xfer=%p\n", xfer));
3420
3421         /* Transfer is already done. */
3422         if (xfer->status != USBD_NOT_STARTED &&
3423             xfer->status != USBD_IN_PROGRESS) {
3424                 crit_exit();
3425                 kprintf("ohci_device_isoc_abort: early return\n");
3426                 return;
3427         }
3428
3429         /* Give xfer the requested abort code. */
3430         xfer->status = USBD_CANCELLED;
3431
3432         sed = opipe->sed;
3433         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* force hardware skip */
3434
3435         num_sitds = 0;
3436         sitd = xfer->hcpriv;
3437 #ifdef DIAGNOSTIC
3438         if (sitd == NULL) {
3439                 crit_exit();
3440                 kprintf("ohci_device_isoc_abort: hcpriv==0\n");
3441                 return;
3442         }
3443 #endif
3444         for (; sitd != NULL && sitd->xfer == xfer; sitd = sitd->nextitd) {
3445                 num_sitds++;
3446 #ifdef DIAGNOSTIC
3447                 DPRINTFN(1,("abort sets done sitd=%p\n", sitd));
3448                 sitd->isdone = 1;
3449 #endif
3450         }
3451
3452         crit_exit();
3453
3454         /*
3455          * Each sitd has up to OHCI_ITD_NOFFSET transfers, each can
3456          * take a usb 1ms cycle. Conservatively wait for it to drain.
3457          * Even with DMA done, it can take awhile for the "batch"
3458          * delivery of completion interrupts to occur thru the controller.
3459          */
3460  
3461         do {
3462                 usb_delay_ms(&sc->sc_bus, 2*(num_sitds*OHCI_ITD_NOFFSET));
3463
3464                 undone   = 0;
3465                 tmp_sitd = xfer->hcpriv;
3466                 for (; tmp_sitd != NULL && tmp_sitd->xfer == xfer;
3467                     tmp_sitd = tmp_sitd->nextitd) {
3468                         if (OHCI_CC_NO_ERROR ==
3469                             OHCI_ITD_GET_CC(le32toh(tmp_sitd->itd.itd_flags)) &&
3470                             tmp_sitd->flags & OHCI_ITD_ACTIVE &&
3471                             (tmp_sitd->flags & OHCI_ITD_INTFIN) == 0)
3472                                 undone++;
3473                 }
3474         } while( undone != 0 );
3475
3476         crit_enter();
3477
3478         /* Run callback. */
3479         usb_transfer_complete(xfer);
3480
3481         if (sitd != NULL)
3482                 /*
3483                  * Only if there is a `next' sitd in next xfer...
3484                  * unlink this xfer's sitds.
3485                  */
3486                 sed->ed.ed_headp = htole32(sitd->physaddr);
3487         else
3488                 sed->ed.ed_headp = 0;
3489
3490         sed->ed.ed_flags &= htole32(~OHCI_ED_SKIP); /* remove hardware skip */
3491
3492         crit_exit();
3493 }
3494
3495 void
3496 ohci_device_isoc_done(usbd_xfer_handle xfer)
3497 {
3498         /* This null routine corresponds to non-isoc "done()" routines
3499          * that free the stds associated with an xfer after a completed
3500          * xfer interrupt. However, in the case of isoc transfers, the
3501          * sitds associated with the transfer have already been processed
3502          * and reallocated for the next iteration by
3503          * "ohci_device_isoc_transfer()".
3504          *
3505          * Routine "usb_transfer_complete()" is called at the end of every
3506          * relevant usb interrupt. "usb_transfer_complete()" indirectly
3507          * calls 1) "ohci_device_isoc_transfer()" (which keeps pumping the
3508          * pipeline by setting up the next transfer iteration) and 2) then 
3509          * calls "ohci_device_isoc_done()". Isoc transfers have not been 
3510          * working for the ohci usb because this routine was trashing the
3511          * xfer set up for the next iteration (thus, only the first 
3512          * UGEN_NISOREQS xfers outstanding on an open would work). Perhaps
3513          * this could all be re-factored, but that's another pass...
3514          */
3515 }
3516
3517 usbd_status
3518 ohci_setup_isoc(usbd_pipe_handle pipe)
3519 {
3520         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3521         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3522         struct iso *iso = &opipe->u.iso;
3523
3524         iso->next = -1;
3525         iso->inuse = 0;
3526
3527         crit_enter();
3528         ohci_add_ed(opipe->sed, sc->sc_isoc_head);
3529         crit_exit();
3530
3531         return (USBD_NORMAL_COMPLETION);
3532 }
3533
3534 void
3535 ohci_device_isoc_close(usbd_pipe_handle pipe)
3536 {
3537         struct ohci_pipe *opipe = (struct ohci_pipe *)pipe;
3538         ohci_softc_t *sc = (ohci_softc_t *)pipe->device->bus;
3539         ohci_soft_ed_t *sed;
3540
3541         DPRINTF(("ohci_device_isoc_close: pipe=%p\n", pipe));
3542
3543         sed = opipe->sed;
3544         sed->ed.ed_flags |= htole32(OHCI_ED_SKIP); /* Stop device. */
3545
3546         ohci_close_pipe(pipe, sc->sc_isoc_head); /* Stop isoc list, free ED.*/
3547
3548         /* up to NISOREQs xfers still outstanding. */
3549
3550 #ifdef DIAGNOSTIC
3551         opipe->tail.itd->isdone = 1;
3552 #endif
3553         ohci_free_sitd(sc, opipe->tail.itd);    /* Next `avail free' sitd.*/
3554 }