summaryrefslogtreecommitdiffstats
path: root/board/mpl/common/usb_uhci.c
blob: a0094372a46fc01ec47fe89eb7132f99d08405f9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
/*
 * Part of this code has been derived from linux:
 * Universal Host Controller Interface driver for USB (take II).
 *
 * (c) 1999-2001 Georg Acher, acher@in.tum.de (executive slave) (base guitar)
 *               Deti Fliegl, deti@fliegl.de (executive slave) (lead voice)
 *               Thomas Sailer, sailer@ife.ee.ethz.ch (chief consultant) (cheer leader)
 *               Roman Weissgaerber, weissg@vienna.at (virt root hub) (studio porter)
 * (c) 2000      Yggdrasil Computing, Inc. (port of new PCI interface support
 *               from usb-ohci.c by Adam Richter, adam@yggdrasil.com).
 * (C) 2000      David Brownell, david-b@pacbell.net (usb-ohci.c)
 *
 * HW-initalization based on material of
 *
 * (C) Copyright 1999 Linus Torvalds
 * (C) Copyright 1999 Johannes Erdfelt
 * (C) Copyright 1999 Randy Dunlap
 * (C) Copyright 1999 Gregory P. Smith
 *
 *
 * Adapted for U-Boot:
 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 *
 */

/**********************************************************************
 * How it works:
 * -------------
 * The framelist / Transfer descriptor / Queue Heads are similar like
 * in the linux usb_uhci.c.
 *
 * During initialization, the following skeleton is allocated in init_skel:
 *
 *         framespecific           |           common chain
 *
 * framelist[]
 * [  0 ]-----> TD ---------\
 * [  1 ]-----> TD ----------> TD ------> QH -------> QH -------> QH ---> NULL
 *   ...        TD ---------/
 * [1023]-----> TD --------/
 *
 *              ^^             ^^         ^^          ^^          ^^
 *              7 TDs for      1 TD for   Start of    Start of    End Chain
 *              INT (2-128ms)  1ms-INT    CTRL Chain  BULK Chain
 *
 *
 * Since this is a bootloader, the isochronous transfer descriptor have been removed.
 *
 * Interrupt Transfers.
 * --------------------
 * For Interupt transfers USB_MAX_TEMP_INT_TD Transfer descriptor are available. They
 * will be inserted after the appropriate (depending the interval setting) skeleton TD.
 * If an interrupt has been detected the dev->irqhandler is called. The status and number
 * of transfered bytes is stored in dev->irq_status resp. dev->irq_act_len. If the
 * dev->irqhandler returns 0, the interrupt TD is removed and disabled. If an 1 is returned,
 * the interrupt TD will be reactivated.
 *
 * Control Transfers
 * -----------------
 * Control Transfers are issued by filling the tmp_td with the appropriate data and connect
 * them to the qh_cntrl queue header. Before other control/bulk transfers can be issued,
 * the programm has to wait for completion. This does not allows asynchronous data transfer.
 *
 * Bulk Transfers
 * --------------
 * Bulk Transfers are issued by filling the tmp_td with the appropriate data and connect
 * them to the qh_bulk queue header. Before other control/bulk transfers can be issued,
 * the programm has to wait for completion. This does not allows asynchronous data transfer.
 *
 *
 */

#include <common.h>
#include <pci.h>

#ifdef CONFIG_USB_UHCI

#include <usb.h>
#include "usb_uhci.h"

#define USB_MAX_TEMP_TD      128  /* number of temporary TDs for bulk and control transfers */
#define USB_MAX_TEMP_INT_TD  32   /* number of temporary TDs for Interrupt transfers */


#undef USB_UHCI_DEBUG

#ifdef	USB_UHCI_DEBUG
#define	USB_UHCI_PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define USB_UHCI_PRINTF(fmt,args...)
#endif


static int irqvec = -1;            /* irq vector, if -1 uhci is stopped / reseted */
unsigned int usb_base_addr;       /* base address */

static uhci_td_t td_int[8];        /* Interrupt Transfer descriptors */
static uhci_qh_t qh_cntrl;         /* control Queue Head */
static uhci_qh_t qh_bulk;          /*  bulk Queue Head */
static uhci_qh_t qh_end;           /* end Queue Head */
static uhci_td_t td_last;          /* last TD (linked with end chain) */

/* temporary tds */
static uhci_td_t tmp_td[USB_MAX_TEMP_TD];          /* temporary bulk/control td's  */
static uhci_td_t tmp_int_td[USB_MAX_TEMP_INT_TD];  /* temporary interrupt td's  */

static unsigned long framelist[1024] __attribute__ ((aligned (0x1000))); /* frame list */

static struct virt_root_hub rh;   /* struct for root hub */

/**********************************************************************
 * some forward decleration
 */
int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
						void *buffer, int transfer_len,struct devrequest *setup);

/* fill a td with the approproiate data. Link, status, info and buffer
 * are used by the USB controller itselfes, dev is used to identify the
 * "connected" device
 */
void usb_fill_td(uhci_td_t* td,unsigned long link,unsigned long status,
					unsigned long info, unsigned long buffer, unsigned long dev)
{
	td->link=swap_32(link);
	td->status=swap_32(status);
	td->info=swap_32(info);
	td->buffer=swap_32(buffer);
	td->dev_ptr=dev;
}

/* fill a qh with the approproiate data. Head and element are used by the USB controller
 * itselfes. As soon as a valid dev_ptr is filled, a td chain is connected to the qh.
 * Please note, that after completion of the td chain, the entry element is removed /
 * marked invalid by the USB controller.
 */
void usb_fill_qh(uhci_qh_t* qh,unsigned long head,unsigned long element)
{
	qh->head=swap_32(head);
	qh->element=swap_32(element);
	qh->dev_ptr=0L;
}

/* get the status of a td->status
 */
unsigned long usb_uhci_td_stat(unsigned long status)
{
	unsigned long result=0;
	result |= (status & TD_CTRL_NAK)      ? USB_ST_NAK_REC : 0;
	result |= (status & TD_CTRL_STALLED)  ? USB_ST_STALLED : 0;
	result |= (status & TD_CTRL_DBUFERR)  ? USB_ST_BUF_ERR : 0;
	result |= (status & TD_CTRL_BABBLE)   ? USB_ST_BABBLE_DET : 0;
	result |= (status & TD_CTRL_CRCTIMEO) ? USB_ST_CRC_ERR : 0;
	result |= (status & TD_CTRL_BITSTUFF) ? USB_ST_BIT_ERR : 0;
	result |= (status & TD_CTRL_ACTIVE)   ? USB_ST_NOT_PROC : 0;
	return result;
}

/* get the status and the transfered len of a td chain.
 * called from the completion handler
 */
int usb_get_td_status(uhci_td_t *td,struct usb_device *dev)
{
	unsigned long temp,info;
	unsigned long stat;
	uhci_td_t *mytd=td;

	if(dev->devnum==rh.devnum)
		return 0;
	dev->act_len=0;
	stat=0;
	do {
		temp=swap_32((unsigned long)mytd->status);
		stat=usb_uhci_td_stat(temp);
		info=swap_32((unsigned long)mytd->info);
		if(((info & 0xff)!= USB_PID_SETUP) &&
				(((info >> 21) & 0x7ff)!= 0x7ff) &&
				(temp & 0x7FF)!=0x7ff)
		{  /* if not setup and not null data pack */
			dev->act_len+=(temp & 0x7FF) + 1; /* the transfered len is act_len + 1 */
		}
		if(stat) {           /* status no ok */
			dev->status=stat;
			return -1;
		}
		temp=swap_32((unsigned long)mytd->link);
		mytd=(uhci_td_t *)(temp & 0xfffffff0);
	}while((temp & 0x1)==0); /* process all TDs */
	dev->status=stat;
	return 0; /* Ok */
}


/*-------------------------------------------------------------------
 *                         LOW LEVEL STUFF
 *          assembles QHs und TDs for control, bulk and iso
 *-------------------------------------------------------------------*/

/* Submits a control message. That is a Setup, Data and Status transfer.
 * Routine does not wait for completion.
 */
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
										int transfer_len,struct devrequest *setup)
{
	unsigned long destination, status;
	int maxsze = usb_maxpacket(dev, pipe);
	unsigned long dataptr;
	int len;
	int pktsze;
	int i=0;

	if (!maxsze) {
		USB_UHCI_PRINTF("uhci_submit_control_urb: pipesize for pipe %lx is zero\n", pipe);
		return -1;
	}
	if(((pipe>>8)&0x7f)==rh.devnum) {
		/* this is the root hub -> redirect it */
		return uhci_submit_rh_msg(dev,pipe,buffer,transfer_len,setup);
	}
	USB_UHCI_PRINTF("uhci_submit_control start len %x, maxsize %x\n",transfer_len,maxsze);
	/* The "pipe" thing contains the destination in bits 8--18 */
	destination = (pipe & PIPE_DEVEP_MASK) | USB_PID_SETUP; /* Setup stage */
	/* 3 errors */
	status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
	/* (urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD); */
	/*  Build the TD for the control request, try forever, 8 bytes of data */
	usb_fill_td(&tmp_td[i],UHCI_PTR_TERM ,status, destination | (7 << 21),(unsigned long)setup,(unsigned long)dev);
#if 0
	{
		char *sp=(char *)setup;
		printf("SETUP to pipe %lx: %x %x %x %x %x %x %x %x\n", pipe,
		    sp[0],sp[1],sp[2],sp[3],sp[4],sp[5],sp[6],sp[7]);
	}
#endif
	dataptr = (unsigned long)buffer;
	len=transfer_len;

	/* If direction is "send", change the frame from SETUP (0x2D)
	   to OUT (0xE1). Else change it from SETUP to IN (0x69). */
	destination = (pipe & PIPE_DEVEP_MASK) | ((pipe & USB_DIR_IN)==0 ? USB_PID_OUT : USB_PID_IN);
	while (len > 0) {
		/* data stage */
		pktsze = len;
		i++;
		if (pktsze > maxsze)
			pktsze = maxsze;
		destination ^= 1 << TD_TOKEN_TOGGLE;	/* toggle DATA0/1 */
		usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status, destination | ((pktsze - 1) << 21),dataptr,(unsigned long)dev);	/* Status, pktsze bytes of data */
		tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]);

		dataptr += pktsze;
		len -= pktsze;
	}

	/*  Build the final TD for control status */
	/* It's only IN if the pipe is out AND we aren't expecting data */

	destination &= ~UHCI_PID;
	if (((pipe & USB_DIR_IN)==0) || (transfer_len == 0))
		destination |= USB_PID_IN;
	else
		destination |= USB_PID_OUT;
	destination |= 1 << TD_TOKEN_TOGGLE;	/* End in Data1 */
	i++;
	status &=~TD_CTRL_SPD;
	/* no limit on errors on final packet , 0 bytes of data */
	usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status | TD_CTRL_IOC, destination | (UHCI_NULL_DATA_SIZE << 21),0,(unsigned long)dev);
	tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]);	/* queue status td */
	/*	usb_show_td(i+1);*/
	USB_UHCI_PRINTF("uhci_submit_control end (%d tmp_tds used)\n",i);
	/* first mark the control QH element terminated */
	qh_cntrl.element=0xffffffffL;
	/* set qh active */
	qh_cntrl.dev_ptr=(unsigned long)dev;
	/* fill in tmp_td_chain */
	qh_cntrl.element=swap_32((unsigned long)&tmp_td[0]);
	return 0;
}

/*-------------------------------------------------------------------
 * Prepare TDs for bulk transfers.
 */
int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len)
{
	unsigned long destination, status,info;
	unsigned long dataptr;
	int maxsze = usb_maxpacket(dev, pipe);
	int len;
	int i=0;

	if(transfer_len < 0) {
		printf("Negative transfer length in submit_bulk\n");
		return -1;
	}
	if (!maxsze)
		return -1;
	/* The "pipe" thing contains the destination in bits 8--18. */
	destination = (pipe & PIPE_DEVEP_MASK) | usb_packetid (pipe);
	/* 3 errors */
	status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | (3 << 27);
	/*	((urb->transfer_flags & USB_DISABLE_SPD) ? 0 : TD_CTRL_SPD) | (3 << 27); */
	/* Build the TDs for the bulk request */
	len = transfer_len;
	dataptr = (unsigned long)buffer;
	do {
		int pktsze = len;
		if (pktsze > maxsze)
			pktsze = maxsze;
		/* pktsze bytes of data  */
		info = destination | (((pktsze - 1)&UHCI_NULL_DATA_SIZE) << 21) |
			(usb_gettoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe)) << TD_TOKEN_TOGGLE);

		if((len-pktsze)==0)
			status |= TD_CTRL_IOC;	/* last one generates INT */

		usb_fill_td(&tmp_td[i],UHCI_PTR_TERM, status, info,dataptr,(unsigned long)dev);	/* Status, pktsze bytes of data */
		if(i>0)
			tmp_td[i-1].link=swap_32((unsigned long)&tmp_td[i]);
		i++;
		dataptr += pktsze;
		len -= pktsze;
		usb_dotoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe));
	} while (len > 0);
	/* first mark the bulk QH element terminated */
	qh_bulk.element=0xffffffffL;
	/* set qh active */
	qh_bulk.dev_ptr=(unsigned long)dev;
	/* fill in tmp_td_chain */
	qh_bulk.element=swap_32((unsigned long)&tmp_td[0]);
	return 0;
}


/* search a free interrupt td
 */
uhci_td_t *uhci_alloc_int_td(void)
{
	int i;
	for(i=0;i<USB_MAX_TEMP_INT_TD;i++) {
		if(tmp_int_td[i].dev_ptr==0) /* no device assigned -> free TD */
			return &tmp_int_td[i];
	}
	return NULL;
}

#if 0
void uhci_show_temp_int_td(void)
{
	int i;
	for(i=0;i<USB_MAX_TEMP_INT_TD;i++) {
		if((tmp_int_td[i].dev_ptr&0x01)!=0x1L) /* no device assigned -> free TD */
			printf("temp_td %d is assigned to dev %lx\n",i,tmp_int_td[i].dev_ptr);
	}
	printf("all others temp_tds are free\n");
}
#endif
/*-------------------------------------------------------------------
 * submits USB interrupt (ie. polling ;-)
 */
int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len, int interval)
{
	int nint, n;
	unsigned long status, destination;
	unsigned long info,tmp;
	uhci_td_t *mytd;
	if (interval < 0 || interval >= 256)
		return -1;

	if (interval == 0)
		nint = 0;
	else {
		for (nint = 0, n = 1; nint <= 8; nint++, n += n)	/* round interval down to 2^n */
		 {
			if(interval < n) {
				interval = n / 2;
				break;
			}
		}
		nint--;
	}

	USB_UHCI_PRINTF("Rounded interval to %i, chain  %i\n", interval, nint);
	mytd=uhci_alloc_int_td();
	if(mytd==NULL) {
		printf("No free INT TDs found\n");
		return -1;
	}
	status = (pipe & TD_CTRL_LS) | TD_CTRL_ACTIVE | TD_CTRL_IOC | (3 << 27);
/*		(urb->transfer_flags & USB_DISABLE_SPD ? 0 : TD_CTRL_SPD) | (3 << 27);
*/

	destination =(pipe & PIPE_DEVEP_MASK) | usb_packetid (pipe) | (((transfer_len - 1) & 0x7ff) << 21);

	info = destination | (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)) << TD_TOKEN_TOGGLE);
	tmp = swap_32(td_int[nint].link);
	usb_fill_td(mytd,tmp,status, info,(unsigned long)buffer,(unsigned long)dev);
	/* Link it */
	tmp = swap_32((unsigned long)mytd);
	td_int[nint].link=tmp;

	usb_dotoggle (dev, usb_pipeendpoint (pipe), usb_pipeout (pipe));

	return 0;
}

/**********************************************************************
 * Low Level functions
 */


void reset_hc(void)
{

	/* Global reset for 100ms */
	out16r( usb_base_addr + USBPORTSC1,0x0204);
	out16r( usb_base_addr + USBPORTSC2,0x0204);
	out16r( usb_base_addr + USBCMD,USBCMD_GRESET | USBCMD_RS);
	/* Turn off all interrupts */
	out16r(usb_base_addr + USBINTR,0);
	wait_ms(50);
	out16r( usb_base_addr + USBCMD,0);
	wait_ms(10);
}

void start_hc(void)
{
	int timeout = 1000;

	while(in16r(usb_base_addr + USBCMD) & USBCMD_HCRESET) {
		if (!--timeout) {
			printf("USBCMD_HCRESET timed out!\n");
			break;
		}
	}
	/* Turn on all interrupts */
	out16r(usb_base_addr + USBINTR,USBINTR_TIMEOUT | USBINTR_RESUME | USBINTR_IOC | USBINTR_SP);
	/* Start at frame 0 */
	out16r(usb_base_addr + USBFRNUM,0);
	/* set Framebuffer base address */
	out32r(usb_base_addr+USBFLBASEADD,(unsigned long)&framelist);
	/* Run and mark it configured with a 64-byte max packet */
	out16r(usb_base_addr + USBCMD,USBCMD_RS | USBCMD_CF | USBCMD_MAXP);
}

/* Initialize the skeleton
 */
void usb_init_skel(void)
{
	unsigned long temp;
	int n;

	for(n=0;n<USB_MAX_TEMP_INT_TD;n++)
		tmp_int_td[n].dev_ptr=0L; /* no devices connected */
	/* last td */
	usb_fill_td(&td_last,UHCI_PTR_TERM,TD_CTRL_IOC ,0,0,0L);
  /* usb_fill_td(&td_last,UHCI_PTR_TERM,0,0,0); */
	/* End Queue Header */
	usb_fill_qh(&qh_end,UHCI_PTR_TERM,(unsigned long)&td_last);
	/* Bulk Queue Header */
	temp=(unsigned long)&qh_end;
	usb_fill_qh(&qh_bulk,temp | UHCI_PTR_QH,UHCI_PTR_TERM);
	/* Control Queue Header */
	temp=(unsigned long)&qh_bulk;
	usb_fill_qh(&qh_cntrl, temp | UHCI_PTR_QH,UHCI_PTR_TERM);
	/* 1ms Interrupt td */
	temp=(unsigned long)&qh_cntrl;
	usb_fill_td(&td_int[0],temp | UHCI_PTR_QH,0,0,0,0L);
	temp=(unsigned long)&td_int[0];
	for(n=1; n<8; n++)
		usb_fill_td(&td_int[n],temp,0,0,0,0L);
	for (n = 0; n < 1024; n++) {
	/* link all framelist pointers to one of the interrupts */
		int m, o;
		if ((n&127)==127)
			framelist[n]= swap_32((unsigned long)&td_int[0]);
		else
			for (o = 1, m = 2; m <= 128; o++, m += m)
				if ((n & (m - 1)) == ((m - 1) / 2))
						framelist[n]= swap_32((unsigned long)&td_int[o]);
	}
}

/* check the common skeleton for completed transfers, and update the status
 * of the "connected" device. Called from the IRQ routine.
 */
void usb_check_skel(void)
{
	struct usb_device *dev;
	/* start with the control qh */
	if(qh_cntrl.dev_ptr!=0) /* it's a device assigned check if this caused IRQ */
	{
		dev=(struct usb_device *)qh_cntrl.dev_ptr;
		usb_get_td_status(&tmp_td[0],dev); /* update status */
		if(!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
			qh_cntrl.dev_ptr=0;
		}
	}
	/* now process the bulk */
	if(qh_bulk.dev_ptr!=0) /* it's a device assigned check if this caused IRQ */
	{
		dev=(struct usb_device *)qh_bulk.dev_ptr;
		usb_get_td_status(&tmp_td[0],dev); /* update status */
		if(!(dev->status & USB_ST_NOT_PROC)) { /* is not active anymore, disconnect devices */
			qh_bulk.dev_ptr=0;
		}
	}
}

/* check the interrupt chain, ubdate the status of the appropriate device,
 * call the appropriate irqhandler and reactivate the TD if the irqhandler
 * returns with 1
 */
void usb_check_int_chain(void)
{
	int i,res;
	unsigned long link,status;
	struct usb_device *dev;
	uhci_td_t *td,*prevtd;

	for(i=0;i<8;i++) {
		prevtd = &td_int[i]; /* the first previous td is the skeleton td */
		link=swap_32(td_int[i].link) & 0xfffffff0; /* next in chain */
		td=(uhci_td_t *)link; /* assign it */
		/* all interrupt TDs are finally linked to the td_int[0].
		 * so we process all until we find the td_int[0].
		 * if int0 chain points to a QH, we're also done
	   */
		while(((i>0) && (link != (unsigned long)&td_int[0])) ||
					((i==0) && !(swap_32(td->link) &  UHCI_PTR_QH)))
		{
			/* check if a device is assigned with this td */
			status=swap_32(td->status);
			if((td->dev_ptr!=0L) && !(status & TD_CTRL_ACTIVE)) {
				/* td is not active and a device is assigned -> call irqhandler */
				dev=(struct usb_device *)td->dev_ptr;
				dev->irq_act_len=((status & 0x7FF)==0x7FF) ? 0 : (status & 0x7FF) + 1; /* transfered length */
				dev->irq_status=usb_uhci_td_stat(status); /* get status */
				res=dev->irq_handle(dev); /* call irqhandler */
				if(res==1) {
					/* reactivate */
					status|=TD_CTRL_ACTIVE;
					td->status=swap_32(status);
					prevtd=td; /* previous td = this td */
				}
				else {
					prevtd->link=td->link; /* link previous td directly to the nex td -> unlinked */
					/* remove device pointer */
					td->dev_ptr=0L;
				}
			} /* if we call the irq handler */
			link=swap_32(td->link) & 0xfffffff0; /* next in chain */
			td=(uhci_td_t *)link; /* assign it */
		} /* process all td in this int chain */
	} /* next interrupt chain */
}


/* usb interrupt service routine.
 */
void handle_usb_interrupt(void)
{
	unsigned short status;

	/*
	 * Read the interrupt status, and write it back to clear the
	 * interrupt cause
	 */

	status = in16r(usb_base_addr + USBSTS);

	if (!status)		/* shared interrupt, not mine */
		return;
	if (status != 1) {
		/* remove host controller halted state */
		if ((status&0x20) && ((in16r(usb_base_addr+USBCMD) && USBCMD_RS)==0)) {
			out16r(usb_base_addr + USBCMD, USBCMD_RS | in16r(usb_base_addr + USBCMD));
		}
	}
	usb_check_int_chain(); /* call interrupt handlers for int tds */
	usb_check_skel(); /* call completion handler for common transfer routines */
	out16r(usb_base_addr+USBSTS,status);
}


/* init uhci
 */
int usb_lowlevel_init(void)
{
	unsigned char temp;
	int	busdevfunc;

	busdevfunc=pci_find_device(USB_UHCI_VEND_ID,USB_UHCI_DEV_ID,0); /* get PCI Device ID */
	if(busdevfunc==-1) {
		printf("Error USB UHCI (%04X,%04X) not found\n",USB_UHCI_VEND_ID,USB_UHCI_DEV_ID);
		return -1;
	}
	pci_read_config_byte(busdevfunc,PCI_INTERRUPT_LINE,&temp);
	irqvec = temp;
	irq_free_handler(irqvec);
	USB_UHCI_PRINTF("Interrupt Line = %d, is %d\n",irqvec);
	pci_read_config_byte(busdevfunc,PCI_INTERRUPT_PIN,&temp);
	USB_UHCI_PRINTF("Interrupt Pin = %ld\n",temp);
	pci_read_config_dword(busdevfunc,PCI_BASE_ADDRESS_4,&usb_base_addr);
	USB_UHCI_PRINTF("IO Base Address = 0x%lx\n",usb_base_addr);
	usb_base_addr&=0xFFFFFFF0;
	usb_base_addr+=CONFIG_SYS_ISA_IO_BASE_ADDRESS;
	rh.devnum = 0;
	usb_init_skel();
	reset_hc();
	start_hc();
	irq_install_handler(irqvec, (interrupt_handler_t *)handle_usb_interrupt, NULL);
	return 0;
}

/* stop uhci
 */
int usb_lowlevel_stop(void)
{
	if(irqvec==-1)
		return 1;
	irq_free_handler(irqvec);
	reset_hc();
	irqvec = -1;
	return 0;
}

/*******************************************************************************************
 * Virtual Root Hub
 * Since the uhci does not have a real HUB, we simulate one ;-)
 */
#undef	USB_RH_DEBUG

#ifdef	USB_RH_DEBUG
#define	USB_RH_PRINTF(fmt,args...)	printf (fmt ,##args)
static void usb_display_wValue(unsigned short wValue,unsigned short wIndex);
static void usb_display_Req(unsigned short req);
#else
#define USB_RH_PRINTF(fmt,args...)
static void usb_display_wValue(unsigned short wValue,unsigned short wIndex) {}
static void usb_display_Req(unsigned short req) {}
#endif

static unsigned char root_hub_dev_des[] =
{
	0x12,			/*  __u8  bLength; */
	0x01,			/*  __u8  bDescriptorType; Device */
	0x00,			/*  __u16 bcdUSB; v1.0 */
	0x01,
	0x09,			/*  __u8  bDeviceClass; HUB_CLASSCODE */
	0x00,			/*  __u8  bDeviceSubClass; */
	0x00,			/*  __u8  bDeviceProtocol; */
	0x08,			/*  __u8  bMaxPacketSize0; 8 Bytes */
	0x00,			/*  __u16 idVendor; */
	0x00,
	0x00,			/*  __u16 idProduct; */
	0x00,
	0x00,			/*  __u16 bcdDevice; */
	0x00,
	0x01,			/*  __u8  iManufacturer; */
	0x00,			/*  __u8  iProduct; */
	0x00,			/*  __u8  iSerialNumber; */
	0x01			/*  __u8  bNumConfigurations; */
};


/* Configuration descriptor */
static unsigned char root_hub_config_des[] =
{
	0x09,			/*  __u8  bLength; */
	0x02,			/*  __u8  bDescriptorType; Configuration */
	0x19,			/*  __u16 wTotalLength; */
	0x00,
	0x01,			/*  __u8  bNumInterfaces; */
	0x01,			/*  __u8  bConfigurationValue; */
	0x00,			/*  __u8  iConfiguration; */
	0x40,			/*  __u8  bmAttributes;
				   Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
	0x00,			/*  __u8  MaxPower; */

     /* interface */
	0x09,			/*  __u8  if_bLength; */
	0x04,			/*  __u8  if_bDescriptorType; Interface */
	0x00,			/*  __u8  if_bInterfaceNumber; */
	0x00,			/*  __u8  if_bAlternateSetting; */
	0x01,			/*  __u8  if_bNumEndpoints; */
	0x09,			/*  __u8  if_bInterfaceClass; HUB_CLASSCODE */
	0x00,			/*  __u8  if_bInterfaceSubClass; */
	0x00,			/*  __u8  if_bInterfaceProtocol; */
	0x00,			/*  __u8  if_iInterface; */

     /* endpoint */
	0x07,			/*  __u8  ep_bLength; */
	0x05,			/*  __u8  ep_bDescriptorType; Endpoint */
	0x81,			/*  __u8  ep_bEndpointAddress; IN Endpoint 1 */
	0x03,			/*  __u8  ep_bmAttributes; Interrupt */
	0x08,			/*  __u16 ep_wMaxPacketSize; 8 Bytes */
	0x00,
	0xff			/*  __u8  ep_bInterval; 255 ms */
};


static unsigned char root_hub_hub_des[] =
{
	0x09,			/*  __u8  bLength; */
	0x29,			/*  __u8  bDescriptorType; Hub-descriptor */
	0x02,			/*  __u8  bNbrPorts; */
	0x00,			/* __u16  wHubCharacteristics; */
	0x00,
	0x01,			/*  __u8  bPwrOn2pwrGood; 2ms */
	0x00,			/*  __u8  bHubContrCurrent; 0 mA */
	0x00,			/*  __u8  DeviceRemovable; *** 7 Ports max *** */
	0xff			/*  __u8  PortPwrCtrlMask; *** 7 ports max *** */
};

static unsigned char root_hub_str_index0[] =
{
	0x04,			/*  __u8  bLength; */
	0x03,			/*  __u8  bDescriptorType; String-descriptor */
	0x09,			/*  __u8  lang ID */
	0x04,			/*  __u8  lang ID */
};

static unsigned char root_hub_str_index1[] =
{
	28,			/*  __u8  bLength; */
	0x03,			/*  __u8  bDescriptorType; String-descriptor */
	'U',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'H',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'C',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'I',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	' ',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'R',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'o',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'o',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	't',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	' ',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'H',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'u',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
	'b',			/*  __u8  Unicode */
	0,				/*  __u8  Unicode */
};


/*
 * Root Hub Control Pipe (interrupt Pipes are not supported)
 */


int uhci_submit_rh_msg(struct usb_device *dev, unsigned long pipe, void *buffer,int transfer_len,struct devrequest *cmd)
{
	void *data = buffer;
	int leni = transfer_len;
	int len = 0;
	int status = 0;
	int stat = 0;
	int i;

	unsigned short cstatus;

	unsigned short bmRType_bReq;
	unsigned short wValue;
	unsigned short wIndex;
	unsigned short wLength;

	if (usb_pipeint(pipe)) {
		printf("Root-Hub submit IRQ: NOT implemented\n");
#if 0
		uhci->rh.urb = urb;
		uhci->rh.send = 1;
		uhci->rh.interval = urb->interval;
		rh_init_int_timer (urb);
#endif
		return 0;
	}
	bmRType_bReq = cmd->requesttype | cmd->request << 8;
	wValue = swap_16(cmd->value);
	wIndex = swap_16(cmd->index);
	wLength = swap_16(cmd->length);
	usb_display_Req(bmRType_bReq);
	for (i = 0; i < 8; i++)
		rh.c_p_r[i] = 0;
	USB_RH_PRINTF("Root-Hub: adr: %2x cmd(%1x): %02x%02x %04x %04x %04x\n",
	     dev->devnum, 8, cmd->requesttype,cmd->request, wValue, wIndex, wLength);

	switch (bmRType_bReq) {
		/* Request Destination:
		   without flags: Device,
		   RH_INTERFACE: interface,
		   RH_ENDPOINT: endpoint,
		   RH_CLASS means HUB here,
		   RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
		 */

	case RH_GET_STATUS:
		*(unsigned short *) data = swap_16(1);
		len=2;
		break;
	case RH_GET_STATUS | RH_INTERFACE:
		*(unsigned short *) data = swap_16(0);
		len=2;
		break;
	case RH_GET_STATUS | RH_ENDPOINT:
		*(unsigned short *) data = swap_16(0);
		len=2;
		break;
	case RH_GET_STATUS | RH_CLASS:
		*(unsigned long *) data = swap_32(0);
		len=4;
		break;	/* hub power ** */
	case RH_GET_STATUS | RH_OTHER | RH_CLASS:

		status = in16r(usb_base_addr + USBPORTSC1 + 2 * (wIndex - 1));
		cstatus = ((status & USBPORTSC_CSC) >> (1 - 0)) |
			((status & USBPORTSC_PEC) >> (3 - 1)) |
			(rh.c_p_r[wIndex - 1] << (0 + 4));
		status = (status & USBPORTSC_CCS) |
			((status & USBPORTSC_PE) >> (2 - 1)) |
			((status & USBPORTSC_SUSP) >> (12 - 2)) |
			((status & USBPORTSC_PR) >> (9 - 4)) |
			(1 << 8) |	/* power on ** */
			((status & USBPORTSC_LSDA) << (-8 + 9));

		*(unsigned short *) data = swap_16(status);
		*(unsigned short *) (data + 2) = swap_16(cstatus);
		len=4;
		break;
	case RH_CLEAR_FEATURE | RH_ENDPOINT:
		switch (wValue) {
		case (RH_ENDPOINT_STALL):
			len=0;
			break;
		}
		break;

	case RH_CLEAR_FEATURE | RH_CLASS:
		switch (wValue) {
		case (RH_C_HUB_OVER_CURRENT):
			len=0;	/* hub power over current ** */
			break;
		}
		break;

	case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
		usb_display_wValue(wValue,wIndex);
		switch (wValue) {
		case (RH_PORT_ENABLE):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) & ~USBPORTSC_PE;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_PORT_SUSPEND):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) & ~USBPORTSC_SUSP;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_PORT_POWER):
			len=0;	/* port power ** */
			break;
		case (RH_C_PORT_CONNECTION):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) | USBPORTSC_CSC;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_C_PORT_ENABLE):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) | USBPORTSC_PEC;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_C_PORT_SUSPEND):
/*** WR_RH_PORTSTAT(RH_PS_PSSC); */
			len=0;
			break;
		case (RH_C_PORT_OVER_CURRENT):
			len=0;
			break;
		case (RH_C_PORT_RESET):
			rh.c_p_r[wIndex - 1] = 0;
			len=0;
			break;
		}
		break;
	case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
		usb_display_wValue(wValue,wIndex);
		switch (wValue) {
		case (RH_PORT_SUSPEND):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) | USBPORTSC_SUSP;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_PORT_RESET):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) | USBPORTSC_PR;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			wait_ms(10);
			status = (status & 0xfff5) & ~USBPORTSC_PR;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			udelay(10);
			status = (status & 0xfff5) | USBPORTSC_PE;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			wait_ms(10);
			status = (status & 0xfff5) | 0xa;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		case (RH_PORT_POWER):
			len=0;	/* port power ** */
			break;
		case (RH_PORT_ENABLE):
			status = in16r(usb_base_addr+USBPORTSC1+2*(wIndex-1));
			status = (status & 0xfff5) | USBPORTSC_PE;
			out16r(usb_base_addr+USBPORTSC1+2*(wIndex-1),status);
			len=0;
			break;
		}
		break;

	case RH_SET_ADDRESS:
		rh.devnum = wValue;
		len=0;
		break;
	case RH_GET_DESCRIPTOR:
		switch ((wValue & 0xff00) >> 8) {
		case (0x01):	/* device descriptor */
			i=sizeof(root_hub_config_des);
			status=i > wLength ? wLength : i;
			len = leni > status ? status : leni;
			memcpy (data, root_hub_dev_des, len);
			break;
		case (0x02):	/* configuration descriptor */
			i=sizeof(root_hub_config_des);
			status=i > wLength ? wLength : i;
			len = leni > status ? status : leni;
			memcpy (data, root_hub_config_des, len);
			break;
		case (0x03):	/*string descriptors */
			if(wValue==0x0300) {
				i=sizeof(root_hub_str_index0);
				status = i > wLength ? wLength : i;
				len = leni > status ? status : leni;
				memcpy (data, root_hub_str_index0, len);
				break;
			}
			if(wValue==0x0301) {
				i=sizeof(root_hub_str_index1);
				status = i > wLength ? wLength : i;
				len = leni > status ? status : leni;
				memcpy (data, root_hub_str_index1, len);
				break;
			}
			stat = USB_ST_STALLED;
		}
		break;

	case RH_GET_DESCRIPTOR | RH_CLASS:
		root_hub_hub_des[2] = 2;
		i=sizeof(root_hub_hub_des);
		status= i > wLength ? wLength : i;
		len = leni > status ? status : leni;
		memcpy (data, root_hub_hub_des, len);
		break;
	case RH_GET_CONFIGURATION:
		*(unsigned char *) data = 0x01;
		len = 1;
		break;
	case RH_SET_CONFIGURATION:
		len=0;
		break;
	default:
		stat = USB_ST_STALLED;
	}
	USB_RH_PRINTF("Root-Hub stat %lx port1: %x port2: %x\n\n",stat,
	     in16r(usb_base_addr + USBPORTSC1), in16r(usb_base_addr + USBPORTSC2));
	dev->act_len=len;
	dev->status=stat;
	return stat;

}

/********************************************************************************
 * Some Debug Routines
 */

#ifdef	USB_RH_DEBUG

static void usb_display_Req(unsigned short req)
{
	USB_RH_PRINTF("- Root-Hub Request: ");
	switch (req) {
	case RH_GET_STATUS:
		USB_RH_PRINTF("Get Status ");
		break;
	case RH_GET_STATUS | RH_INTERFACE:
		USB_RH_PRINTF("Get Status Interface ");
		break;
	case RH_GET_STATUS | RH_ENDPOINT:
		USB_RH_PRINTF("Get Status Endpoint ");
		break;
	case RH_GET_STATUS | RH_CLASS:
		USB_RH_PRINTF("Get Status Class");
		break;	/* hub power ** */
	case RH_GET_STATUS | RH_OTHER | RH_CLASS:
		USB_RH_PRINTF("Get Status Class Others");
		break;
	case RH_CLEAR_FEATURE | RH_ENDPOINT:
		USB_RH_PRINTF("Clear Feature Endpoint ");
		break;
	case RH_CLEAR_FEATURE | RH_CLASS:
		USB_RH_PRINTF("Clear Feature Class ");
		break;
	case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
		USB_RH_PRINTF("Clear Feature Other Class ");
		break;
	case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
		USB_RH_PRINTF("Set Feature Other Class ");
		break;
	case RH_SET_ADDRESS:
		USB_RH_PRINTF("Set Address ");
		break;
	case RH_GET_DESCRIPTOR:
		USB_RH_PRINTF("Get Descriptor ");
		break;
	case RH_GET_DESCRIPTOR | RH_CLASS:
		USB_RH_PRINTF("Get Descriptor Class ");
		break;
	case RH_GET_CONFIGURATION:
		USB_RH_PRINTF("Get Configuration ");
		break;
	case RH_SET_CONFIGURATION:
		USB_RH_PRINTF("Get Configuration ");
		break;
	default:
		USB_RH_PRINTF("****UNKNOWN**** 0x%04X ",req);
	}
	USB_RH_PRINTF("\n");

}

static void usb_display_wValue(unsigned short wValue,unsigned short wIndex)
{
	switch (wValue) {
		case (RH_PORT_ENABLE):
			USB_RH_PRINTF("Root-Hub: Enable Port %d\n",wIndex);
			break;
		case (RH_PORT_SUSPEND):
			USB_RH_PRINTF("Root-Hub: Suspend Port %d\n",wIndex);
			break;
		case (RH_PORT_POWER):
			USB_RH_PRINTF("Root-Hub: Port Power %d\n",wIndex);
			break;
		case (RH_C_PORT_CONNECTION):
			USB_RH_PRINTF("Root-Hub: C Port Connection Port %d\n",wIndex);
			break;
		case (RH_C_PORT_ENABLE):
			USB_RH_PRINTF("Root-Hub: C Port Enable Port %d\n",wIndex);
			break;
		case (RH_C_PORT_SUSPEND):
			USB_RH_PRINTF("Root-Hub: C Port Suspend Port %d\n",wIndex);
			break;
		case (RH_C_PORT_OVER_CURRENT):
			USB_RH_PRINTF("Root-Hub: C Port Over Current Port %d\n",wIndex);
			break;
		case (RH_C_PORT_RESET):
			USB_RH_PRINTF("Root-Hub: C Port reset Port %d\n",wIndex);
			break;
		default:
			USB_RH_PRINTF("Root-Hub: unknown %x %x\n",wValue,wIndex);
			break;
	}
}

#endif


#ifdef	USB_UHCI_DEBUG

static int usb_display_td(uhci_td_t *td)
{
	unsigned long tmp;
	int valid;

	printf("TD at %p:\n",td);

	tmp=swap_32(td->link);
	printf("Link points to 0x%08lX, %s first, %s, %s\n",tmp&0xfffffff0,
		((tmp & 0x4)==0x4) ? "Depth" : "Breath",
		((tmp & 0x2)==0x2) ? "QH" : "TD",
		((tmp & 0x1)==0x1) ? "invalid" : "valid");
	valid=((tmp & 0x1)==0x0);
	tmp=swap_32(td->status);
	printf("     %s %ld Errors %s %s %s \n     %s %s %s %s %s %s\n     Len 0x%lX\n",
		(((tmp>>29)&0x1)==0x1) ? "SPD Enable" : "SPD Disable",
		((tmp>>28)&0x3),
		(((tmp>>26)&0x1)==0x1) ? "Low Speed" : "Full Speed",
		(((tmp>>25)&0x1)==0x1) ? "ISO " : "",
		(((tmp>>24)&0x1)==0x1) ? "IOC " : "",
		(((tmp>>23)&0x1)==0x1) ? "Active " : "Inactive ",
		(((tmp>>22)&0x1)==0x1) ? "Stalled" : "",
		(((tmp>>21)&0x1)==0x1) ? "Data Buffer Error" : "",
		(((tmp>>20)&0x1)==0x1) ? "Babble" : "",
		(((tmp>>19)&0x1)==0x1) ? "NAK" : "",
		(((tmp>>18)&0x1)==0x1) ? "Bitstuff Error" : "",
		(tmp&0x7ff));
	tmp=swap_32(td->info);
	printf("     MaxLen 0x%lX\n",((tmp>>21)&0x7FF));
	printf("     %s Endpoint 0x%lX Dev Addr 0x%lX PID 0x%lX\n",((tmp>>19)&0x1)==0x1 ? "TOGGLE" : "",
		((tmp>>15)&0xF),((tmp>>8)&0x7F),tmp&0xFF);
	tmp=swap_32(td->buffer);
	printf("     Buffer 0x%08lX\n",tmp);
	printf("     DEV %08lX\n",td->dev_ptr);
	return valid;
}


void usb_show_td(int max)
{
	int i;
	if(max>0) {
		for(i=0;i<max;i++) {
			usb_display_td(&tmp_td[i]);
		}
	}
	else {
		i=0;
		do {
			printf("tmp_td[%d]\n",i);
		}while(usb_display_td(&tmp_td[i++]));
	}
}


#endif
#endif /* CONFIG_USB_UHCI */

/* EOF */
OpenPOWER on IntegriCloud