summaryrefslogtreecommitdiff
path: root/packages/linux/linux-rp-2.6.18/tmio-ohci-r5.patch
blob: a87469afb315a4f6bc973489109d60214ed2d258 (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
Index: linux-2.6.18/drivers/usb/host/ohci-tmio.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.18/drivers/usb/host/ohci-tmio.c	2006-09-20 16:18:08.000000000 +0200
@@ -0,0 +1,894 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ * (C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus glue for Toshiba Mobile IO (TMIO) Controller's OHCI core
+ * (C) Copyright 2005 Chris Humbert <mahadri-usb@drigon.com>
+ *
+ * This is known to work with the following variants:
+ *	TC6393XB revision 3	(32kB SRAM)
+ *
+ * The TMIO's OHCI core DMAs through a small internal buffer that
+ * is directly addressable by the CPU.  dma_declare_coherent_memory
+ * and DMA bounce buffers allow the higher-level OHCI host driver to
+ * work.  However, the dma API doesn't handle dma mapping failures
+ * well (dma_sg_map() is a prime example), so it is unusable.
+ *
+ * This HC pretends be a PIO-ish controller and uses the kernel's
+ * generic allocator for the entire SRAM.  Using the USB core's
+ * usb_operations, we provide hcd_buffer_alloc/free.  Using the OHCI's
+ * ohci_ops, we provide memory management for OHCI's TDs and EDs.  We
+ * internally queue a URB's TDs until enough dma memory is available
+ * to enqueue them with the HC.
+ *
+ * Written from sparse documentation from Toshiba and Sharp's driver
+ * for the 2.4 kernel,
+ *	usb-ohci-tc6393.c (C) Copyright 2004 Lineo Solutions, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/pagemap.h>
+#include <linux/init.h>
+#include <linux/namei.h>
+#include <linux/sched.h>
+
+#include <linux/genalloc.h>
+#include <asm/dma-mapping.h>		/* for consistent_sync()	*/
+#include <asm/hardware/tmio.h>
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * USB Host Controller Configuration Register
+ */
+struct tmio_uhccr {
+	u8 x00[8];
+	u8	revid;	/* 0x08 Revision ID				*/
+	u8 x01[7];
+	u16	basel;	/* 0x10 USB Control Register Base Address Low	*/
+	u16	baseh;	/* 0x12 USB Control Register Base Address High	*/
+	u8 x02[0x2c];
+	u8	ilme;	/* 0x40 Internal Local Memory Enable		*/
+	u8 x03[0x0b];
+	u16	pm;	/* 0x4c Power Management			*/
+	u8 x04[2];
+	u8	intc;	/* 0x50 INT Control				*/
+	u8 x05[3];
+	u16	lmw1l;	/* 0x54 Local Memory Window 1 LMADRS Low	*/
+	u16	lmw1h;	/* 0x56 Local Memory Window 1 LMADRS High	*/
+	u16	lmw1bl;	/* 0x58 Local Memory Window 1 Base Address Low	*/
+	u16	lmw1bh;	/* 0x5A Local Memory Window 1 Base Address High	*/
+	u16	lmw2l;	/* 0x5C Local Memory Window 2 LMADRS Low	*/
+	u16	lmw2h;	/* 0x5E Local Memory Window 2 LMADRS High	*/
+	u16	lmw2bl;	/* 0x60 Local Memory Window 2 Base Address Low	*/
+	u16	lmw2bh;	/* 0x62 Local Memory Window 2 Base Address High	*/
+	u8 x06[0x98];
+	u8	misc;	/* 0xFC MISC					*/
+	u8 x07[3];
+} __attribute__ ((packed));
+
+union tmio_uhccr_pm {
+	u16		raw;
+struct {
+	unsigned	gcken:1;	/* D0 */
+	unsigned	ckrnen:1;	/* D1 */
+	unsigned	uspw1:1;	/* D2 USB Port 1 Power Disable	*/
+	unsigned	uspw2:1;	/* D3 USB Port 2 Power Disable	*/
+	unsigned	x00:4;
+	unsigned	pmee:1;		/* D8 */
+	unsigned	x01:6;
+	unsigned	pmes:1;		/* D15 */
+} __attribute__ ((packed));
+} __attribute__ ((packed));
+
+/*-------------------------------------------------------------------------*/
+
+struct tmio_dma_pool {
+	struct device*		dev;
+	unsigned int		size;
+};
+
+struct tmio_hcd {
+	struct gen_pool*	poolp;
+	struct usb_operations	ops;
+	struct tmio_dma_pool	td_pool;
+	struct tmio_dma_pool	ed_pool;
+
+	struct tmio_uhccr __iomem *ccr;
+	void __iomem *		sram;
+	size_t			sram_len;
+};
+
+#define hcd_to_tmio(hcd)	((struct tmio_hcd*)(hcd_to_ohci (hcd) + 1))
+
+struct tmio_td {
+	void*		data;		/* td's data buffer		*/
+	void __iomem *	bounce;		/* dma bounce buffer		*/
+	dma_addr_t	dma;		/* bounce buffer dma address	*/
+	size_t		len;		/* bounce buffer length		*/
+	u32		info;		/* parameter for td_fill	*/
+};
+
+struct tmio_urb {
+	int		td_add;		/* next index to be added	*/
+	int		td_queue;	/* next index to be HC enqueued	*/
+
+	struct tmio_td	td [0];		/* private td data		*/
+};
+
+static inline struct tmio_urb *urb_to_turb (struct urb *urb)
+{
+	urb_priv_t* urb_priv = urb->hcpriv;
+	return (struct tmio_urb*)(urb_priv->td + urb_priv->length);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/* gen_pool_alloc page allocator callback */
+static unsigned long tmio_pool_callback(struct gen_pool *poolp)
+{
+	return 0;
+}
+
+static inline void tmio_pool_destroy(struct tmio_hcd *tmio)
+{
+	struct gen_pool *poolp = tmio->poolp;
+
+	if (!poolp)
+		return;
+	if (poolp->h)
+		kfree(poolp->h);
+	kfree(poolp);
+	tmio->poolp = NULL;
+}
+
+/*-------------------------------------------------------------------------*/
+
+#define BOUNDED_XYL(x,y,ylen)	(((y) <= (x)) && ((x) < ((y)+(ylen))))
+#define BOUNDED_XYY(x,y1,y2)	(((y1) <= (x)) && ((x) < (y2)))
+
+static inline dma_addr_t tmio_virt_to_dma (struct usb_hcd *hcd, void *vaddr)
+{
+	struct resource* sram	= tmio_resource_mem (hcd->self.controller);
+	struct tmio_hcd* tmio	= hcd_to_tmio (hcd);
+
+	return BOUNDED_XYL (vaddr, tmio->sram, tmio->sram_len)
+			? sram->start + (vaddr - tmio->sram)
+			: ~0;
+}
+
+static inline void* tmio_dma_to_virt (struct usb_hcd *hcd, dma_addr_t handle)
+{
+	struct resource* sram	= tmio_resource_mem (hcd->self.controller);
+	struct tmio_hcd* tmio	= hcd_to_tmio (hcd);
+
+	return BOUNDED_XYY (handle, sram->start, sram->end + 1)
+			? tmio->sram + handle - sram->start
+			: NULL;
+}
+
+/*
+ * allocate dma-able memory in the device's internal sram
+ *
+ * The generic pool allocator's minimum chunk size is 32 bytes,
+ * which is the cache line size on the PXA255, so we don't need
+ * to do anything special for smaller requests.
+ */
+static inline void *tmio_dma_alloc (struct device *dev, size_t size,
+				dma_addr_t *handle, gfp_t mem_flags)
+{
+	struct usb_hcd*	 hcd	= dev_get_drvdata (dev);
+	struct tmio_hcd* tmio	= hcd_to_tmio (hcd);
+	void*		 virt	= (void*) gen_pool_alloc (tmio->poolp, size);
+
+	return (*handle = tmio_virt_to_dma (hcd, virt)) == ~0 ? NULL : virt;
+}
+
+static inline void tmio_dma_free (struct device *dev, size_t size,
+					void *cpu_addr, dma_addr_t handle)
+{
+	struct usb_hcd*		hcd	= dev_get_drvdata (dev);
+	struct tmio_hcd*	tmio	= hcd_to_tmio (hcd);
+	dma_addr_t		dma	= tmio_virt_to_dma (hcd, cpu_addr);
+
+	if (unlikely (dma == ~0)) {
+		dev_err (dev, "trying to free bad address 0x%p\n", cpu_addr);
+		return;
+	}
+
+	if (unlikely (handle != dma))
+		dev_err (dev, "dma address mismatch for 0x%p: %08x != %08x\n",
+				cpu_addr, handle, dma);
+
+	gen_pool_free (tmio->poolp, (unsigned long) cpu_addr, size);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void *tmio_dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
+							dma_addr_t *handle)
+{
+	struct tmio_dma_pool *tdp = (struct tmio_dma_pool*) pool;
+	return tmio_dma_alloc (tdp->dev, tdp->size, handle, mem_flags);
+}
+
+static void
+tmio_dma_pool_free (struct dma_pool *pool, void *vaddr, dma_addr_t addr)
+{
+	struct tmio_dma_pool *tdp = (struct tmio_dma_pool*) pool;
+	return tmio_dma_free (tdp->dev, tdp->size, vaddr, addr);
+}
+
+static void *tmio_buffer_alloc (struct usb_bus *bus, size_t size,
+				gfp_t mem_flags, dma_addr_t *dma)
+{
+	return tmio_dma_alloc (bus->controller, size, dma, mem_flags);
+}
+
+static void tmio_buffer_free (struct usb_bus *bus, size_t size,
+				void *addr, dma_addr_t dma)
+{
+	tmio_dma_free (bus->controller, size, addr, dma);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void tmio_hc_stop (struct usb_hcd *hcd)
+{
+	struct device*			dev	= hcd->self.controller;
+	struct tmio_device*		tdev	= dev_to_tdev (dev);
+	struct tmio_hcd*		tmio	= hcd_to_tmio (hcd);
+	struct tmio_uhccr __iomem*	ccr	= tmio->ccr;
+	union tmio_uhccr_pm		pm	= {0};
+
+	pm.gcken	= 1;
+	pm.ckrnen	= 1;
+	pm.uspw1	= 1;
+	pm.uspw2	= 1;
+
+	iowrite8 (0,		&ccr->intc);
+	iowrite8 (0,		&ccr->ilme);
+	iowrite16(0,		&ccr->basel);
+	iowrite16(0,		&ccr->baseh);
+	iowrite16(pm.raw,	&ccr->pm);
+
+	tdev->ops->function (dev, 0);
+	tdev->ops->clock (dev, 0);
+}
+
+static void tmio_hc_start (struct usb_hcd *hcd)
+{
+	struct device*			dev	= hcd->self.controller;
+	struct tmio_device*		tdev	= dev_to_tdev (dev);
+	struct tmio_hcd*		tmio	= hcd_to_tmio (hcd);
+	struct tmio_uhccr __iomem*	ccr	= tmio->ccr;
+	union tmio_uhccr_pm		pm	= {0};
+
+	pm.pmes		= 1;
+	pm.pmee		= 1;
+	pm.ckrnen	= 1;
+	pm.gcken	= 1;
+
+	tdev->ops->clock (dev, 1);
+	tdev->ops->function (dev, 1);
+
+	iowrite16(pm.raw,			&ccr->pm);
+	iowrite16(hcd->rsrc_start,		&ccr->basel);
+	iowrite16(hcd->rsrc_start >> 16,	&ccr->baseh);
+	iowrite8 (1,				&ccr->ilme);
+	iowrite8 (2,				&ccr->intc);
+
+	consistent_sync (tmio->sram, tmio->sram_len, DMA_BIDIRECTIONAL);
+
+	dev_info (dev, "revision %d @ 0x%08llx, irq %d\n",
+			ioread8 (&ccr->revid), hcd->rsrc_start, hcd->irq);
+}
+
+static void tmio_stop (struct usb_hcd *hcd)
+{
+	struct ohci_hcd*	ohci	= hcd_to_ohci (hcd);
+
+	/* NULL these so ohci_stop() doesn't try to free them */
+	ohci->hcca	= NULL;
+	ohci->td_cache	= NULL;
+	ohci->ed_cache	= NULL;
+
+	ohci_stop (hcd);
+	tmio_hc_stop (hcd);
+	tmio_pool_destroy (hcd_to_tmio (hcd));
+
+	/* We don't free the hcca because tmio_hc_stop() turns off
+	 * the sram and the memory allocation data is destroyed. */
+}
+
+static int tmio_start (struct usb_hcd *hcd)
+{
+	struct device*		dev	= hcd->self.controller;
+	struct ohci_hcd*	ohci	= hcd_to_ohci (hcd);
+	struct tmio_hcd*	tmio	= hcd_to_tmio (hcd);
+	int			retval;
+
+	tmio_hc_start (hcd);
+
+	tmio->poolp = gen_pool_create(0, fls(tmio->sram_len) - 1,
+						tmio_pool_callback, 0);
+	if (!tmio->poolp) {
+		retval = -ENOMEM;
+		goto err_gen_pool_create;
+	}
+
+	gen_pool_free (tmio->poolp, (unsigned long)(tmio->sram),
+							tmio->sram_len);
+
+	ohci->hcca = tmio_dma_alloc (dev, sizeof *ohci->hcca,
+					&ohci->hcca_dma, GFP_KERNEL);
+	if (!ohci->hcca) {
+		retval = -ENOMEM;
+		goto err_hcca_alloc;
+	}
+
+	/* for our dma_pool_alloc/free hooks */
+	ohci->td_cache = (struct dma_pool*) &tmio->td_pool;
+	ohci->ed_cache = (struct dma_pool*) &tmio->ed_pool;
+
+	if ((retval = ohci_init (ohci)) < 0)
+		goto err_ohci_init;
+
+	if ((retval = ohci_run (ohci)) < 0)
+		goto err_ohci_run;
+
+	return 0;
+
+err_ohci_run:
+	err ("can't start %s", hcd->self.bus_name);
+err_ohci_init:
+err_hcca_alloc:
+err_gen_pool_create:
+	tmio_stop (hcd);
+	return retval;
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline void *tmio_urb_dma_to_virt(struct urb *urb, dma_addr_t dma)
+{
+	if (BOUNDED_XYL(dma, urb->transfer_dma, urb->transfer_buffer_length))
+		return urb->transfer_buffer	+ dma - urb->transfer_dma;
+
+	if (BOUNDED_XYL(dma, urb->setup_dma, sizeof (struct usb_ctrlrequest)))
+		return urb->setup_packet	+ dma - urb->setup_dma;
+
+	return NULL;
+}
+
+static struct tmio_td* tmio_td_find (struct td *td, int *index)
+{
+	struct urb*		urb		= td->urb;
+	urb_priv_t*		urb_priv	= urb->hcpriv;
+	struct tmio_urb*	turb		= urb_to_turb (urb);
+	int			i;
+
+	for (i=0; i < urb_priv->length; i++)
+		if (urb_priv->td[i] == td) {
+			*index = i;
+			return turb->td + i;
+		}
+
+	return NULL;
+}
+
+/*
+ * map the td's data to dma-able memory
+ *
+ * if this td transfers data,
+ *	sets tmtd->data		to the urb's data buffer
+ *	sets tmtd->dma		to dma-able memory
+ *	sets tmtd->bounce	to non-NULL if a bounce buffer is allocated
+ *	copies the urb's data buffer to the bounce buffer if necessary
+ */
+static int tmio_td_dma_map (struct ohci_hcd *ohci, struct urb *urb,
+				struct tmio_td *tmtd, int idx)
+{
+	struct usb_hcd*		hcd	= ohci_to_hcd (ohci);
+	struct device*		dev	= hcd->self.controller;
+	dma_addr_t		dma;
+
+	if (!tmtd->len)
+		return 0;
+
+	if (tmio_dma_to_virt (hcd, tmtd->dma))
+		return 0;
+
+	tmtd->data = tmio_urb_dma_to_virt (urb, tmtd->dma);
+	if (unlikely (!tmtd->data)) {
+		dev_err (dev, "TD has bad dma address 0x%08x\n", tmtd->dma);
+		return 0;
+	}
+
+	tmtd->bounce = tmio_dma_alloc (dev, tmtd->len, &dma, GFP_ATOMIC);
+	if (!tmtd->bounce)
+		return -ENOMEM;
+
+	if ((usb_pipecontrol (urb->pipe) && !idx) || usb_pipeout (urb->pipe)) {
+		consistent_sync (tmtd->bounce, tmtd->len, DMA_TO_DEVICE);
+		memcpy (tmtd->bounce, tmtd->data, tmtd->len);
+	} else
+		consistent_sync (tmtd->bounce, tmtd->len, DMA_FROM_DEVICE);
+
+	tmtd->dma = dma;
+	return 0;
+}
+
+/*
+ * unmaps the td's data from dma-able memory
+ *
+ * if a bounce buffer has been allocated,
+ * 	copy the bounce buffer to the urb's data buffer if necessary
+ * 	free the bounce buffer
+ */
+static void tmio_td_dma_unmap (struct ohci_hcd *ohci, struct td *td)
+{
+	struct device*	dev	= (ohci_to_hcd (ohci))->self.controller;
+	struct urb*	urb	= td->urb;
+	int		idx;
+	struct tmio_td*	tmtd	= tmio_td_find (td, &idx);
+
+	if (!tmtd->bounce)
+		return;
+
+	if (usb_pipein (urb->pipe) && (usb_pipecontrol (urb->pipe) ? idx : 1)) {
+		memcpy (tmtd->data, tmtd->bounce, tmtd->len);
+		consistent_sync (tmtd->data, tmtd->len, DMA_TO_DEVICE);
+	}
+
+	tmio_dma_free (dev, tmtd->len, tmtd->bounce, tmtd->dma);
+}
+
+static int tmio_urb_runqueue (struct ohci_hcd *ohci, struct urb *urb)
+{
+	struct tmio_urb*	turb	= urb_to_turb (urb);
+	urb_priv_t*		urb_priv= urb->hcpriv;
+	int			start	= turb->td_queue;
+	int			retval	= 0;
+	int			i;
+
+	for (i = start; i < turb->td_add; i = ++turb->td_queue) {
+		struct tmio_td *tmtd = turb->td + i;
+
+		if ((retval = tmio_td_dma_map (ohci, urb, tmtd, i)))
+			break;
+
+		td_fill (ohci, tmtd->info, tmtd->dma, tmtd->len, urb, i);
+	}
+
+	if (i <= start)
+		return retval;
+
+	/* kickstart the appropriate list */
+	wmb ();
+	switch (urb_priv->ed->type) {
+		case PIPE_BULK:
+			ohci_writel (ohci, OHCI_BLF, &ohci->regs->cmdstatus);
+			break;
+		case PIPE_CONTROL:
+			ohci_writel (ohci, OHCI_CLF, &ohci->regs->cmdstatus);
+			break;
+	}
+
+	return retval;
+}
+
+/*
+ * This needs to be called with ohci->lock held so the pending urb list
+ * isn't modified.
+ */
+static int tmio_ohci_runqueue (struct ohci_hcd *ohci)
+{
+	urb_priv_t*		priv;
+	int			retval	= 0;
+
+	list_for_each_entry_reverse (priv, &ohci->pending, pending)
+		if ((retval = tmio_urb_runqueue (ohci, priv->td[0]->urb)))
+			return retval;
+
+	return retval;
+}
+
+static void tmio_td_fill (struct ohci_hcd *ohci, u32 info,
+			dma_addr_t data, int len, struct urb *urb, int index)
+{
+	struct tmio_urb*	turb	= urb_to_turb (urb);
+	struct tmio_td*		tmtd	= turb->td + index;
+
+	tmtd->data	= NULL;
+	tmtd->bounce	= NULL;
+	tmtd->dma	= data;
+	tmtd->len	= len;
+	tmtd->info	= info;
+	turb->td_add	= index + 1;
+}
+
+static void
+tmio_td_done (struct ohci_hcd *ohci, struct urb *urb, struct td *td)
+{
+	tmio_td_dma_unmap (ohci, td);
+	td_done (ohci, urb, td);
+}
+
+const static struct ohci_ops tmio_ops = {
+	.dma_pool_alloc	= tmio_dma_pool_alloc,
+	.dma_pool_free	= tmio_dma_pool_free,
+	.td_fill	= tmio_td_fill,
+	.td_done	= tmio_td_done,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static irqreturn_t tmio_irq (struct usb_hcd *hcd, struct pt_regs *ptregs)
+{
+	irqreturn_t		retval	= ohci_irq (hcd, ptregs);
+
+	if (retval == IRQ_HANDLED) {
+		struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
+		unsigned long flags;
+
+		spin_lock_irqsave(&ohci->lock, flags);
+		tmio_ohci_runqueue (ohci);
+		spin_unlock_irqrestore (&ohci->lock, flags);
+	}
+
+	return retval;
+}
+
+/*
+ * This is ohci_urb_enqueue with:
+ *	dma address sanitization for tmio_urb_dma_to_virt()
+ *	allocate extra space in urb_priv for our private data
+ *	initialize urb_priv->td[0]->urb for tmio_ohci_runqueue()
+ *	call tmio_ohci_runqueue() after submitting TDs
+ */
+static int tmio_urb_enqueue (
+	struct usb_hcd	*hcd,
+	struct usb_host_endpoint *ep,
+	struct urb	*urb,
+	gfp_t		mem_flags
+) {
+	struct ohci_hcd	*ohci = hcd_to_ohci (hcd);
+	struct ed	*ed;
+	urb_priv_t	*urb_priv;
+	unsigned int	pipe = urb->pipe;
+	int		i, size = 0;
+	unsigned long	flags;
+	int		retval = 0;
+
+#ifdef OHCI_VERBOSE_DEBUG
+	urb_print (urb, "SUB", usb_pipein (pipe));
+#endif
+
+	/* make sure we can convert dma offsets back to virtual addresses */
+	if (!tmio_dma_to_virt (hcd, urb->setup_dma))
+		urb->setup_dma		= 0;
+
+	if (!tmio_dma_to_virt (hcd, urb->transfer_dma))
+		urb->transfer_dma	= sizeof (struct usb_ctrlrequest);
+
+	/* every endpoint has a ed, locate and maybe (re)initialize it */
+	if (! (ed = ed_get (ohci, ep, urb->dev, pipe, urb->interval)))
+		return -ENOMEM;
+
+	/* for the private part of the URB we need the number of TDs (size) */
+	switch (ed->type) {
+		case PIPE_CONTROL:
+			/* td_submit_urb() doesn't yet handle these */
+			if (urb->transfer_buffer_length > 4096)
+				return -EMSGSIZE;
+
+			/* 1 TD for setup, 1 for ACK, plus ... */
+			size = 2;
+			/* FALLTHROUGH */
+		// case PIPE_INTERRUPT:
+		// case PIPE_BULK:
+		default:
+			/* one TD for every 4096 Bytes (can be upto 8K) */
+			size += urb->transfer_buffer_length / 4096;
+			/* ... and for any remaining bytes ... */
+			if ((urb->transfer_buffer_length % 4096) != 0)
+				size++;
+			/* ... and maybe a zero length packet to wrap it up */
+			if (size == 0)
+				size++;
+			else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
+				&& (urb->transfer_buffer_length
+					% usb_maxpacket (urb->dev, pipe,
+						usb_pipeout (pipe))) == 0)
+				size++;
+			break;
+		case PIPE_ISOCHRONOUS: /* number of packets from URB */
+			size = urb->number_of_packets;
+			break;
+	}
+
+	/* allocate the private part of the URB */
+	urb_priv = kzalloc (sizeof (urb_priv_t)
+				+ size * sizeof (struct td*)
+				+ sizeof (struct tmio_urb)
+				+ size * sizeof (struct tmio_td),
+				mem_flags);
+	if (!urb_priv)
+		return -ENOMEM;
+	INIT_LIST_HEAD (&urb_priv->pending);
+	urb_priv->length = size;
+	urb_priv->ed = ed;
+
+	/* allocate the TDs (deferring hash chain updates) */
+	for (i = 0; i < size; i++) {
+		urb_priv->td [i] = td_alloc (ohci, mem_flags);
+		if (!urb_priv->td [i]) {
+			urb_priv->length = i;
+			urb_free_priv (ohci, urb_priv);
+			return -ENOMEM;
+		}
+		urb_priv->td [i]->urb = urb;
+	}
+
+	spin_lock_irqsave (&ohci->lock, flags);
+
+	/* don't submit to a dead HC */
+	if (!HC_IS_RUNNING(hcd->state)) {
+		retval = -ENODEV;
+		goto fail;
+	}
+
+	/* in case of unlink-during-submit */
+	spin_lock (&urb->lock);
+	if (urb->status != -EINPROGRESS) {
+		spin_unlock (&urb->lock);
+		urb->hcpriv = urb_priv;
+		finish_urb (ohci, urb, NULL);
+		retval = 0;
+		goto fail;
+	}
+
+	/* schedule the ed if needed */
+	if (ed->state == ED_IDLE) {
+		retval = ed_schedule (ohci, ed);
+		if (retval < 0)
+			goto fail0;
+		if (ed->type == PIPE_ISOCHRONOUS) {
+			u16	frame = ohci_frame_no(ohci);
+
+			/* delay a few frames before the first TD */
+			frame += max_t (u16, 8, ed->interval);
+			frame &= ~(ed->interval - 1);
+			frame |= ed->branch;
+			urb->start_frame = frame;
+
+			/* yes, only URB_ISO_ASAP is supported, and
+			 * urb->start_frame is never used as input.
+			 */
+		}
+	} else if (ed->type == PIPE_ISOCHRONOUS)
+		urb->start_frame = ed->last_iso + ed->interval;
+
+	/* fill the TDs and link them to the ed; and
+	 * enable that part of the schedule, if needed
+	 * and update count of queued periodic urbs
+	 */
+	urb->hcpriv = urb_priv;
+	td_submit_urb (ohci, urb);
+	tmio_ohci_runqueue (ohci);
+
+fail0:
+	spin_unlock (&urb->lock);
+fail:
+	if (retval)
+		urb_free_priv (ohci, urb_priv);
+	spin_unlock_irqrestore (&ohci->lock, flags);
+	return retval;
+}
+
+static const struct hc_driver tmio_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"TMIO OHCI USB Host Controller",
+	.hcd_priv_size =	sizeof (struct ohci_hcd)
+				+ sizeof (struct tmio_hcd),
+
+	/* generic hardware linkage */
+	.irq =			tmio_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+
+	/* basic lifecycle operations */
+	.start =		tmio_start,
+	.stop =			tmio_stop,
+
+	/* managing i/o requests and associated device resources */
+	.urb_enqueue =		tmio_urb_enqueue,
+	.urb_dequeue =		ohci_urb_dequeue,
+	.endpoint_disable =	ohci_endpoint_disable,
+
+	/* scheduling support */
+	.get_frame_number =	ohci_get_frame,
+
+	/* root hub support */
+	.hub_status_data =	ohci_hub_status_data,
+	.hub_control =		ohci_hub_control,
+#ifdef	CONFIG_PM
+	.bus_suspend =		ohci_bus_suspend,
+	.bus_resume =		ohci_bus_resume,
+#endif
+	.start_port_reset =	ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+/* configure so an HC device and id are always provided */
+/* always called with process context; sleeping is OK */
+
+/**
+ * tmio_probe - initialize TMIO-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ */
+static int tmio_probe (struct device *dev)
+{
+	struct tmio_device*	tdev	= dev_to_tdev (dev);
+	struct resource*	config	= tmio_resource_config (dev);
+	struct resource*	regs	= tmio_resource_control (dev);
+	struct resource*	sram	= tmio_resource_mem (dev);
+	struct resource*	irq	= tmio_resource_irq (dev);
+	struct usb_operations*	ops;
+	struct tmio_hcd*	tmio;
+	struct ohci_hcd*	ohci;
+	struct usb_hcd*		hcd;
+	int			retval;
+
+	if (usb_disabled ())
+		return -ENODEV;
+
+	if (dev->dma_mask || dev->coherent_dma_mask) {
+		dev_err (dev, "DMA not supported\n");
+		return -ENODEV;
+	}
+
+	hcd = usb_create_hcd (&tmio_hc_driver, dev, dev->bus_id);
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto err_create_hcd;
+	}
+
+	tmio			= hcd_to_tmio (hcd);
+	tmio->td_pool.dev	= dev;
+	tmio->ed_pool.dev	= dev;
+	tmio->td_pool.size	= sizeof (struct td);
+	tmio->ed_pool.size	= sizeof (struct ed);
+	ohci			= hcd_to_ohci (hcd);
+	ohci_hcd_init (ohci);
+	ohci->ops		= &tmio_ops;
+
+	retval = request_resource (tdev->iomem, config);
+	if (retval)
+		goto err_request_config_resource;
+
+	retval = request_resource (tdev->iomem, regs);
+	if (retval)
+		goto err_request_regs_resource;
+
+	retval = request_resource (tdev->iomem, sram);
+	if (retval)
+		goto err_request_sram_resource;
+
+	hcd->rsrc_start	= regs->start;
+	hcd->rsrc_len	= regs->end - regs->start + 1;
+	tmio->sram_len	= sram->end - sram->start + 1;
+
+	tmio->ccr = ioremap (config->start, config->end - config->start + 1);
+	if (!tmio->ccr) {
+		retval = -ENOMEM;
+		goto err_ioremap_ccr;
+	}
+
+	hcd->regs = ioremap (hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		retval = -ENOMEM;
+		goto err_ioremap_regs;
+	}
+
+	tmio->sram = ioremap (sram->start, tmio->sram_len);
+	if (!tmio->sram) {
+		retval = -ENOMEM;
+		goto err_ioremap_sram;
+	}
+
+	/* drivers should use our coherent buffer allocator */
+	ops			= &tmio->ops;
+	memcpy (ops, hcd->self.op, sizeof *ops);
+	ops->buffer_alloc	= tmio_buffer_alloc;
+	ops->buffer_free	= tmio_buffer_free;
+	hcd->self.op		= ops;
+
+	retval = usb_add_hcd (hcd, irq->start, SA_INTERRUPT);
+	if (retval)
+		goto err_usb_add_hcd;
+
+	return 0;
+
+err_usb_add_hcd:
+	iounmap (tmio->sram);
+err_ioremap_sram:
+	iounmap (hcd->regs);
+err_ioremap_regs:
+	iounmap (tmio->ccr);
+err_ioremap_ccr:
+	release_resource (sram);
+err_request_sram_resource:
+	release_resource (regs);
+err_request_regs_resource:
+	release_resource (config);
+err_request_config_resource:
+	usb_put_hcd (hcd);
+err_create_hcd:
+	return retval;
+}
+
+/* may be called without controller electrically present */
+/* may be called with controller, bus, and devices active */
+
+/**
+ * tmio_remove - shutdown processing for TMIO-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of tmio_probe(), first invoking
+ * the HCD's stop() method.  It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ */
+static int tmio_remove (struct device *dev)
+{
+	struct usb_hcd*		hcd	= dev_get_drvdata (dev);
+	struct tmio_hcd*	tmio	= hcd_to_tmio (hcd);
+
+	usb_remove_hcd (hcd);
+	iounmap (tmio->sram);
+	iounmap (hcd->regs);
+	iounmap (tmio->ccr);
+	release_resource (tmio_resource_mem (dev));
+	release_resource (tmio_resource_control (dev));
+	release_resource (tmio_resource_config (dev));
+	usb_put_hcd (hcd);
+	return 0;
+}
+
+static struct device_driver tmio_ohci = {
+	.name		= TMIO_NAME_OHCI,
+	.bus		= &tmio_bus_type,
+	.probe		= tmio_probe,
+	.remove		= tmio_remove,
+};
+
+static int __init tmio_init (void)
+{
+	dbg (DRIVER_INFO " (%s)", TMIO_SOC_NAME);
+	dbg ("block sizes: ed %d td %d",
+			sizeof (struct ed), sizeof (struct td));
+
+	return driver_register (&tmio_ohci);
+}
+
+static void __exit tmio_exit (void)
+{
+	driver_unregister (&tmio_ohci);
+}
+
+module_init (tmio_init);
+module_exit (tmio_exit);
Index: linux-2.6.18/drivers/usb/host/Kconfig
===================================================================
--- linux-2.6.18.orig/drivers/usb/host/Kconfig	2006-09-20 05:42:06.000000000 +0200
+++ linux-2.6.18/drivers/usb/host/Kconfig	2006-09-20 16:18:08.000000000 +0200
@@ -83,6 +83,7 @@
 	tristate "OHCI HCD support"
 	depends on USB && USB_ARCH_HAS_OHCI
 	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
+	select GENERIC_ALLOCATOR if TOSHIBA_TC6393XB
 	---help---
 	  The Open Host Controller Interface (OHCI) is a standard for accessing
 	  USB 1.1 host controller hardware.  It does more in hardware than Intel's
Index: linux-2.6.18/drivers/usb/host/ohci-hcd.c
===================================================================
--- linux-2.6.18.orig/drivers/usb/host/ohci-hcd.c	2006-09-20 05:42:06.000000000 +0200
+++ linux-2.6.18/drivers/usb/host/ohci-hcd.c	2006-09-20 16:18:54.000000000 +0200
@@ -923,6 +923,7 @@
       || defined(CONFIG_ARCH_OMAP) \
       || defined (CONFIG_ARCH_LH7A404) \
       || defined (CONFIG_PXA27x) \
+      || defined (CONFIG_TOSHIBA_TC6393XB) \
       || defined (CONFIG_ARCH_EP93XX) \
       || defined (CONFIG_SOC_AU1X00) \
       || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \