usb: create common header virtual root hub descriptors
[karo-tx-uboot.git] / arch / powerpc / cpu / ppc4xx / usb_ohci.c
1 /*
2  * URB OHCI HCD (Host Controller Driver) for USB on the PPC440EP.
3  *
4  * (C) Copyright 2003-2004
5  * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
6  *
7  * (C) Copyright 2004
8  * Pierre Aubert, Staubli Faverges <p.aubert@staubli.com>
9  *
10  * Note: Much of this code has been derived from Linux 2.4
11  * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
12  * (C) Copyright 2000-2002 David Brownell
13  *
14  * SPDX-License-Identifier:     GPL-2.0+
15  */
16 /*
17  * IMPORTANT NOTES
18  * 1 - this driver is intended for use with USB Mass Storage Devices
19  *     (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes!
20  */
21
22 #include <common.h>
23
24 #ifdef CONFIG_USB_OHCI
25
26 #include <malloc.h>
27 #include <usb.h>
28 #include "usb_ohci.h"
29
30 #define OHCI_USE_NPS            /* force NoPowerSwitching mode */
31 #undef OHCI_VERBOSE_DEBUG       /* not always helpful */
32 #undef DEBUG
33 #undef SHOW_INFO
34 #undef OHCI_FILL_TRACE
35
36 /* For initializing controller (mask in an HCFS mode too) */
37 #define OHCI_CONTROL_INIT \
38         (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
39
40 #define readl(a) (*((volatile u32 *)(a)))
41 #define writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
42
43 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
44
45 #ifdef DEBUG
46 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
47 #else
48 #define dbg(format, arg...) do {} while(0)
49 #endif /* DEBUG */
50 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
51 #ifdef SHOW_INFO
52 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
53 #else
54 #define info(format, arg...) do {} while(0)
55 #endif
56
57 #define m16_swap(x) swap_16(x)
58 #define m32_swap(x) swap_32(x)
59
60 #if defined(CONFIG_405EZ) || defined(CONFIG_440EP) || defined(CONFIG_440EPX)
61 #define ohci_cpu_to_le16(x) (x)
62 #define ohci_cpu_to_le32(x) (x)
63 #else
64 #define ohci_cpu_to_le16(x) swap_16(x)
65 #define ohci_cpu_to_le32(x) swap_32(x)
66 #endif
67
68 /* global ohci_t */
69 static ohci_t gohci;
70 /* this must be aligned to a 256 byte boundary */
71 struct ohci_hcca ghcca[1];
72 /* a pointer to the aligned storage */
73 struct ohci_hcca *phcca;
74 /* this allocates EDs for all possible endpoints */
75 struct ohci_device ohci_dev;
76 /* urb_priv */
77 urb_priv_t urb_priv;
78 /* RHSC flag */
79 int got_rhsc;
80 /* device which was disconnected */
81 struct usb_device *devgone;
82 /* flag guarding URB transation */
83 int urb_finished = 0;
84
85 /*-------------------------------------------------------------------------*/
86
87 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
88  * The erratum (#4) description is incorrect.  AMD's workaround waits
89  * till some bits (mostly reserved) are clear; ok for all revs.
90  */
91 #define OHCI_QUIRK_AMD756 0xabcd
92 #define read_roothub(hc, register, mask) ({ \
93         u32 temp = readl (&hc->regs->roothub.register); \
94         if (hc->flags & OHCI_QUIRK_AMD756) \
95                 while (temp & mask) \
96                         temp = readl (&hc->regs->roothub.register); \
97         temp; })
98
99 static u32 roothub_a (struct ohci *hc)
100         { return read_roothub (hc, a, 0xfc0fe000); }
101 static inline u32 roothub_b (struct ohci *hc)
102         { return readl (&hc->regs->roothub.b); }
103 static inline u32 roothub_status (struct ohci *hc)
104         { return readl (&hc->regs->roothub.status); }
105 static u32 roothub_portstatus (struct ohci *hc, int i)
106         { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
107
108
109 /* forward declaration */
110 static int hc_interrupt (void);
111 static void
112 td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
113         int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
114
115 /*-------------------------------------------------------------------------*
116  * URB support functions
117  *-------------------------------------------------------------------------*/
118
119 /* free HCD-private data associated with this URB */
120
121 static void urb_free_priv (urb_priv_t * urb)
122 {
123         int             i;
124         int             last;
125         struct td       * td;
126
127         last = urb->length - 1;
128         if (last >= 0) {
129                 for (i = 0; i <= last; i++) {
130                         td = urb->td[i];
131                         if (td) {
132                                 td->usb_dev = NULL;
133                                 urb->td[i] = NULL;
134                         }
135                 }
136         }
137 }
138
139 /*-------------------------------------------------------------------------*/
140
141 #ifdef DEBUG
142 static int sohci_get_current_frame_number (struct usb_device * dev);
143
144 /* debug| print the main components of an URB
145  * small: 0) header + data packets 1) just header */
146
147 static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
148         int transfer_len, struct devrequest * setup, char * str, int small)
149 {
150         urb_priv_t * purb = &urb_priv;
151
152         dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
153                         str,
154                         sohci_get_current_frame_number (dev),
155                         usb_pipedevice (pipe),
156                         usb_pipeendpoint (pipe),
157                         usb_pipeout (pipe)? 'O': 'I',
158                         usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
159                                 (usb_pipecontrol (pipe)? "CTRL": "BULK"),
160                         purb->actual_length,
161                         transfer_len, dev->status);
162 #ifdef  OHCI_VERBOSE_DEBUG
163         if (!small) {
164                 int i, len;
165
166                 if (usb_pipecontrol (pipe)) {
167                         printf (__FILE__ ": cmd(8):");
168                         for (i = 0; i < 8 ; i++)
169                                 printf (" %02x", ((__u8 *) setup) [i]);
170                         printf ("\n");
171                 }
172                 if (transfer_len > 0 && buffer) {
173                         printf (__FILE__ ": data(%d/%d):",
174                                 purb->actual_length,
175                                 transfer_len);
176                         len = usb_pipeout (pipe)?
177                                         transfer_len: purb->actual_length;
178                         for (i = 0; i < 16 && i < len; i++)
179                                 printf (" %02x", ((__u8 *) buffer) [i]);
180                         printf ("%s\n", i < len? "...": "");
181                 }
182         }
183 #endif
184 }
185
186 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
187 void ep_print_int_eds (ohci_t *ohci, char * str) {
188         int i, j;
189          __u32 * ed_p;
190         for (i= 0; i < 32; i++) {
191                 j = 5;
192                 ed_p = &(ohci->hcca->int_table [i]);
193                 if (*ed_p == 0)
194                     continue;
195                 printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
196                 while (*ed_p != 0 && j--) {
197                         ed_t *ed = (ed_t *)ohci_cpu_to_le32(ed_p);
198                         printf (" ed: %4x;", ed->hwINFO);
199                         ed_p = &ed->hwNextED;
200                 }
201                 printf ("\n");
202         }
203 }
204
205 static void ohci_dump_intr_mask (char *label, __u32 mask)
206 {
207         dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
208                 label,
209                 mask,
210                 (mask & OHCI_INTR_MIE) ? " MIE" : "",
211                 (mask & OHCI_INTR_OC) ? " OC" : "",
212                 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
213                 (mask & OHCI_INTR_FNO) ? " FNO" : "",
214                 (mask & OHCI_INTR_UE) ? " UE" : "",
215                 (mask & OHCI_INTR_RD) ? " RD" : "",
216                 (mask & OHCI_INTR_SF) ? " SF" : "",
217                 (mask & OHCI_INTR_WDH) ? " WDH" : "",
218                 (mask & OHCI_INTR_SO) ? " SO" : ""
219                 );
220 }
221
222 static void maybe_print_eds (char *label, __u32 value)
223 {
224         ed_t *edp = (ed_t *)value;
225
226         if (value) {
227                 dbg ("%s %08x", label, value);
228                 dbg ("%08x", edp->hwINFO);
229                 dbg ("%08x", edp->hwTailP);
230                 dbg ("%08x", edp->hwHeadP);
231                 dbg ("%08x", edp->hwNextED);
232         }
233 }
234
235 static char * hcfs2string (int state)
236 {
237         switch (state) {
238                 case OHCI_USB_RESET:    return "reset";
239                 case OHCI_USB_RESUME:   return "resume";
240                 case OHCI_USB_OPER:     return "operational";
241                 case OHCI_USB_SUSPEND:  return "suspend";
242         }
243         return "?";
244 }
245
246 /* dump control and status registers */
247 static void ohci_dump_status (ohci_t *controller)
248 {
249         struct ohci_regs        *regs = controller->regs;
250         __u32                   temp;
251
252         temp = readl (&regs->revision) & 0xff;
253         if (temp != 0x10)
254                 dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
255
256         temp = readl (&regs->control);
257         dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
258                 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
259                 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
260                 (temp & OHCI_CTRL_IR) ? " IR" : "",
261                 hcfs2string (temp & OHCI_CTRL_HCFS),
262                 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
263                 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
264                 (temp & OHCI_CTRL_IE) ? " IE" : "",
265                 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
266                 temp & OHCI_CTRL_CBSR
267                 );
268
269         temp = readl (&regs->cmdstatus);
270         dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
271                 (temp & OHCI_SOC) >> 16,
272                 (temp & OHCI_OCR) ? " OCR" : "",
273                 (temp & OHCI_BLF) ? " BLF" : "",
274                 (temp & OHCI_CLF) ? " CLF" : "",
275                 (temp & OHCI_HCR) ? " HCR" : ""
276                 );
277
278         ohci_dump_intr_mask ("intrstatus", readl (&regs->intrstatus));
279         ohci_dump_intr_mask ("intrenable", readl (&regs->intrenable));
280
281         maybe_print_eds ("ed_periodcurrent", readl (&regs->ed_periodcurrent));
282
283         maybe_print_eds ("ed_controlhead", readl (&regs->ed_controlhead));
284         maybe_print_eds ("ed_controlcurrent", readl (&regs->ed_controlcurrent));
285
286         maybe_print_eds ("ed_bulkhead", readl (&regs->ed_bulkhead));
287         maybe_print_eds ("ed_bulkcurrent", readl (&regs->ed_bulkcurrent));
288
289         maybe_print_eds ("donehead", readl (&regs->donehead));
290 }
291
292 static void ohci_dump_roothub (ohci_t *controller, int verbose)
293 {
294         __u32                   temp, ndp, i;
295
296         temp = roothub_a (controller);
297         ndp = (temp & RH_A_NDP);
298
299         if (verbose) {
300                 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
301                         ((temp & RH_A_POTPGT) >> 24) & 0xff,
302                         (temp & RH_A_NOCP) ? " NOCP" : "",
303                         (temp & RH_A_OCPM) ? " OCPM" : "",
304                         (temp & RH_A_DT) ? " DT" : "",
305                         (temp & RH_A_NPS) ? " NPS" : "",
306                         (temp & RH_A_PSM) ? " PSM" : "",
307                         ndp
308                         );
309                 temp = roothub_b (controller);
310                 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
311                         temp,
312                         (temp & RH_B_PPCM) >> 16,
313                         (temp & RH_B_DR)
314                         );
315                 temp = roothub_status (controller);
316                 dbg ("roothub.status: %08x%s%s%s%s%s%s",
317                         temp,
318                         (temp & RH_HS_CRWE) ? " CRWE" : "",
319                         (temp & RH_HS_OCIC) ? " OCIC" : "",
320                         (temp & RH_HS_LPSC) ? " LPSC" : "",
321                         (temp & RH_HS_DRWE) ? " DRWE" : "",
322                         (temp & RH_HS_OCI) ? " OCI" : "",
323                         (temp & RH_HS_LPS) ? " LPS" : ""
324                         );
325         }
326
327         for (i = 0; i < ndp; i++) {
328                 temp = roothub_portstatus (controller, i);
329                 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
330                         i,
331                         temp,
332                         (temp & RH_PS_PRSC) ? " PRSC" : "",
333                         (temp & RH_PS_OCIC) ? " OCIC" : "",
334                         (temp & RH_PS_PSSC) ? " PSSC" : "",
335                         (temp & RH_PS_PESC) ? " PESC" : "",
336                         (temp & RH_PS_CSC) ? " CSC" : "",
337
338                         (temp & RH_PS_LSDA) ? " LSDA" : "",
339                         (temp & RH_PS_PPS) ? " PPS" : "",
340                         (temp & RH_PS_PRS) ? " PRS" : "",
341                         (temp & RH_PS_POCI) ? " POCI" : "",
342                         (temp & RH_PS_PSS) ? " PSS" : "",
343
344                         (temp & RH_PS_PES) ? " PES" : "",
345                         (temp & RH_PS_CCS) ? " CCS" : ""
346                         );
347         }
348 }
349
350 static void ohci_dump (ohci_t *controller, int verbose)
351 {
352         dbg ("OHCI controller usb-%s state", controller->slot_name);
353
354         /* dumps some of the state we know about */
355         ohci_dump_status (controller);
356         if (verbose)
357                 ep_print_int_eds (controller, "hcca");
358         dbg ("hcca frame #%04x", controller->hcca->frame_no);
359         ohci_dump_roothub (controller, 1);
360 }
361
362
363 #endif /* DEBUG */
364
365 /*-------------------------------------------------------------------------*
366  * Interface functions (URB)
367  *-------------------------------------------------------------------------*/
368
369 /* get a transfer request */
370
371 int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
372                 int transfer_len, struct devrequest *setup, int interval)
373 {
374         ohci_t *ohci;
375         ed_t * ed;
376         urb_priv_t *purb_priv;
377         int i, size = 0;
378
379         ohci = &gohci;
380
381         /* when controller's hung, permit only roothub cleanup attempts
382          * such as powering down ports */
383         if (ohci->disabled) {
384                 err("sohci_submit_job: EPIPE");
385                 return -1;
386         }
387
388         /* if we have an unfinished URB from previous transaction let's
389          * fail and scream as quickly as possible so as not to corrupt
390          * further communication */
391         if (!urb_finished) {
392                 err("sohci_submit_job: URB NOT FINISHED");
393                 return -1;
394         }
395         /* we're about to begin a new transaction here so mark the URB unfinished */
396         urb_finished = 0;
397
398         /* every endpoint has a ed, locate and fill it */
399         if (!(ed = ep_add_ed (dev, pipe))) {
400                 err("sohci_submit_job: ENOMEM");
401                 return -1;
402         }
403
404         /* for the private part of the URB we need the number of TDs (size) */
405         switch (usb_pipetype (pipe)) {
406                 case PIPE_BULK: /* one TD for every 4096 Byte */
407                         size = (transfer_len - 1) / 4096 + 1;
408                         break;
409                 case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
410                         size = (transfer_len == 0)? 2:
411                                                 (transfer_len - 1) / 4096 + 3;
412                         break;
413         }
414
415         if (size >= (N_URB_TD - 1)) {
416                 err("need %d TDs, only have %d", size, N_URB_TD);
417                 return -1;
418         }
419         purb_priv = &urb_priv;
420         purb_priv->pipe = pipe;
421
422         /* fill the private part of the URB */
423         purb_priv->length = size;
424         purb_priv->ed = ed;
425         purb_priv->actual_length = 0;
426
427         /* allocate the TDs */
428         /* note that td[0] was allocated in ep_add_ed */
429         for (i = 0; i < size; i++) {
430                 purb_priv->td[i] = td_alloc (dev);
431                 if (!purb_priv->td[i]) {
432                         purb_priv->length = i;
433                         urb_free_priv (purb_priv);
434                         err("sohci_submit_job: ENOMEM");
435                         return -1;
436                 }
437         }
438
439         if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
440                 urb_free_priv (purb_priv);
441                 err("sohci_submit_job: EINVAL");
442                 return -1;
443         }
444
445         /* link the ed into a chain if is not already */
446         if (ed->state != ED_OPER)
447                 ep_link (ohci, ed);
448
449         /* fill the TDs and link it to the ed */
450         td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
451
452         return 0;
453 }
454
455 /*-------------------------------------------------------------------------*/
456
457 #ifdef DEBUG
458 /* tell us the current USB frame number */
459
460 static int sohci_get_current_frame_number (struct usb_device *usb_dev)
461 {
462         ohci_t *ohci = &gohci;
463
464         return ohci_cpu_to_le16 (ohci->hcca->frame_no);
465 }
466 #endif
467
468 /*-------------------------------------------------------------------------*
469  * ED handling functions
470  *-------------------------------------------------------------------------*/
471
472 /* link an ed into one of the HC chains */
473
474 static int ep_link (ohci_t *ohci, ed_t *edi)
475 {
476         volatile ed_t *ed = edi;
477
478         ed->state = ED_OPER;
479
480         switch (ed->type) {
481         case PIPE_CONTROL:
482                 ed->hwNextED = 0;
483                 if (ohci->ed_controltail == NULL) {
484                         writel (ed, &ohci->regs->ed_controlhead);
485                 } else {
486                         ohci->ed_controltail->hwNextED = ohci_cpu_to_le32 ((unsigned long)ed);
487                 }
488                 ed->ed_prev = ohci->ed_controltail;
489                 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
490                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
491                         ohci->hc_control |= OHCI_CTRL_CLE;
492                         writel (ohci->hc_control, &ohci->regs->control);
493                 }
494                 ohci->ed_controltail = edi;
495                 break;
496
497         case PIPE_BULK:
498                 ed->hwNextED = 0;
499                 if (ohci->ed_bulktail == NULL) {
500                         writel (ed, &ohci->regs->ed_bulkhead);
501                 } else {
502                         ohci->ed_bulktail->hwNextED = ohci_cpu_to_le32 ((unsigned long)ed);
503                 }
504                 ed->ed_prev = ohci->ed_bulktail;
505                 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
506                         !ohci->ed_rm_list[1] && !ohci->sleeping) {
507                         ohci->hc_control |= OHCI_CTRL_BLE;
508                         writel (ohci->hc_control, &ohci->regs->control);
509                 }
510                 ohci->ed_bulktail = edi;
511                 break;
512         }
513         return 0;
514 }
515
516 /*-------------------------------------------------------------------------*/
517
518 /* unlink an ed from one of the HC chains.
519  * just the link to the ed is unlinked.
520  * the link from the ed still points to another operational ed or 0
521  * so the HC can eventually finish the processing of the unlinked ed */
522
523 static int ep_unlink (ohci_t *ohci, ed_t *edi)
524 {
525         volatile ed_t *ed = edi;
526
527         ed->hwINFO |= ohci_cpu_to_le32 (OHCI_ED_SKIP);
528
529         switch (ed->type) {
530         case PIPE_CONTROL:
531                 if (ed->ed_prev == NULL) {
532                         if (!ed->hwNextED) {
533                                 ohci->hc_control &= ~OHCI_CTRL_CLE;
534                                 writel (ohci->hc_control, &ohci->regs->control);
535                         }
536                         writel (ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
537                 } else {
538                         ed->ed_prev->hwNextED = ed->hwNextED;
539                 }
540                 if (ohci->ed_controltail == ed) {
541                         ohci->ed_controltail = ed->ed_prev;
542                 } else {
543                         ((ed_t *)ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
544                 }
545                 break;
546
547         case PIPE_BULK:
548                 if (ed->ed_prev == NULL) {
549                         if (!ed->hwNextED) {
550                                 ohci->hc_control &= ~OHCI_CTRL_BLE;
551                                 writel (ohci->hc_control, &ohci->regs->control);
552                         }
553                         writel (ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
554                 } else {
555                         ed->ed_prev->hwNextED = ed->hwNextED;
556                 }
557                 if (ohci->ed_bulktail == ed) {
558                         ohci->ed_bulktail = ed->ed_prev;
559                 } else {
560                         ((ed_t *)ohci_cpu_to_le32 (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
561                 }
562                 break;
563         }
564         ed->state = ED_UNLINK;
565         return 0;
566 }
567
568
569 /*-------------------------------------------------------------------------*/
570
571 /* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
572  * but the USB stack is a little bit stateless  so we do it at every transaction
573  * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
574  * in all other cases the state is left unchanged
575  * the ed info fields are setted anyway even though most of them should not change */
576
577 static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
578 {
579         td_t *td;
580         ed_t *ed_ret;
581         volatile ed_t *ed;
582
583         ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
584                         (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
585
586         if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
587                 err("ep_add_ed: pending delete");
588                 /* pending delete request */
589                 return NULL;
590         }
591
592         if (ed->state == ED_NEW) {
593                 ed->hwINFO = ohci_cpu_to_le32 (OHCI_ED_SKIP); /* skip ed */
594                 /* dummy td; end of td list for ed */
595                 td = td_alloc (usb_dev);
596                 ed->hwTailP = ohci_cpu_to_le32 ((unsigned long)td);
597                 ed->hwHeadP = ed->hwTailP;
598                 ed->state = ED_UNLINK;
599                 ed->type = usb_pipetype (pipe);
600                 ohci_dev.ed_cnt++;
601         }
602
603         ed->hwINFO = ohci_cpu_to_le32 (usb_pipedevice (pipe)
604                         | usb_pipeendpoint (pipe) << 7
605                         | (usb_pipeisoc (pipe)? 0x8000: 0)
606                         | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
607                         | (usb_dev->speed == USB_SPEED_LOW) << 13
608                         | usb_maxpacket (usb_dev, pipe) << 16);
609
610         return ed_ret;
611 }
612
613 /*-------------------------------------------------------------------------*
614  * TD handling functions
615  *-------------------------------------------------------------------------*/
616
617 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
618
619 static void td_fill (ohci_t *ohci, unsigned int info,
620         void *data, int len,
621         struct usb_device *dev, int index, urb_priv_t *urb_priv)
622 {
623         volatile td_t  *td, *td_pt;
624 #ifdef OHCI_FILL_TRACE
625         int i;
626 #endif
627
628         if (index > urb_priv->length) {
629                 err("index > length");
630                 return;
631         }
632         /* use this td as the next dummy */
633         td_pt = urb_priv->td [index];
634         td_pt->hwNextTD = 0;
635
636         /* fill the old dummy TD */
637         td = urb_priv->td [index] = (td_t *)(ohci_cpu_to_le32 (urb_priv->ed->hwTailP) & ~0xf);
638
639         td->ed = urb_priv->ed;
640         td->next_dl_td = NULL;
641         td->index = index;
642         td->data = (__u32)data;
643 #ifdef OHCI_FILL_TRACE
644         if (usb_pipebulk(urb_priv->pipe) && usb_pipeout(urb_priv->pipe)) {
645                 for (i = 0; i < len; i++)
646                 printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
647                 printf("\n");
648         }
649 #endif
650         if (!len)
651                 data = 0;
652
653         td->hwINFO = ohci_cpu_to_le32 (info);
654         td->hwCBP = ohci_cpu_to_le32 ((unsigned long)data);
655         if (data)
656                 td->hwBE = ohci_cpu_to_le32 ((unsigned long)(data + len - 1));
657         else
658                 td->hwBE = 0;
659         td->hwNextTD = ohci_cpu_to_le32 ((unsigned long)td_pt);
660
661         /* append to queue */
662         td->ed->hwTailP = td->hwNextTD;
663 }
664
665 /*-------------------------------------------------------------------------*/
666
667 /* prepare all TDs of a transfer */
668 static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
669         int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
670 {
671         ohci_t *ohci = &gohci;
672         int data_len = transfer_len;
673         void *data;
674         int cnt = 0;
675         __u32 info = 0;
676         unsigned int toggle = 0;
677
678         /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
679         if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
680                 toggle = TD_T_TOGGLE;
681         } else {
682                 toggle = TD_T_DATA0;
683                 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
684         }
685         urb->td_cnt = 0;
686         if (data_len)
687                 data = buffer;
688         else
689                 data = 0;
690
691         switch (usb_pipetype (pipe)) {
692         case PIPE_BULK:
693                 info = usb_pipeout (pipe)?
694                         TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
695                 while(data_len > 4096) {
696                         td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
697                         data += 4096; data_len -= 4096; cnt++;
698                 }
699                 info = usb_pipeout (pipe)?
700                         TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
701                 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
702                 cnt++;
703
704                 if (!ohci->sleeping)
705                         writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
706                 break;
707
708         case PIPE_CONTROL:
709                 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
710                 td_fill (ohci, info, setup, 8, dev, cnt++, urb);
711                 if (data_len > 0) {
712                         info = usb_pipeout (pipe)?
713                                 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
714                         /* NOTE:  mishandles transfers >8K, some >4K */
715                         td_fill (ohci, info, data, data_len, dev, cnt++, urb);
716                 }
717                 info = usb_pipeout (pipe)?
718                         TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
719                 td_fill (ohci, info, data, 0, dev, cnt++, urb);
720                 if (!ohci->sleeping)
721                         writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
722                 break;
723         }
724         if (urb->length != cnt)
725                 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
726 }
727
728 /*-------------------------------------------------------------------------*
729  * Done List handling functions
730  *-------------------------------------------------------------------------*/
731
732
733 /* calculate the transfer length and update the urb */
734
735 static void dl_transfer_length(td_t * td)
736 {
737         __u32 tdBE, tdCBP;
738         urb_priv_t *lurb_priv = &urb_priv;
739
740         tdBE   = ohci_cpu_to_le32 (td->hwBE);
741         tdCBP  = ohci_cpu_to_le32 (td->hwCBP);
742
743
744         if (!(usb_pipecontrol(lurb_priv->pipe) &&
745             ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
746                 if (tdBE != 0) {
747                         if (td->hwCBP == 0)
748                                 lurb_priv->actual_length += tdBE - td->data + 1;
749                         else
750                                 lurb_priv->actual_length += tdCBP - td->data;
751                 }
752         }
753 }
754
755 /*-------------------------------------------------------------------------*/
756
757 /* replies to the request have to be on a FIFO basis so
758  * we reverse the reversed done-list */
759
760 static td_t * dl_reverse_done_list (ohci_t *ohci)
761 {
762         __u32 td_list_hc;
763         td_t *td_rev = NULL;
764         td_t *td_list = NULL;
765         urb_priv_t *lurb_priv = NULL;
766
767         td_list_hc = ohci_cpu_to_le32 (ohci->hcca->done_head) & 0xfffffff0;
768         ohci->hcca->done_head = 0;
769
770         while (td_list_hc) {
771                 td_list = (td_t *)td_list_hc;
772
773                 if (TD_CC_GET (ohci_cpu_to_le32 (td_list->hwINFO))) {
774                         lurb_priv = &urb_priv;
775                         dbg(" USB-error/status: %x : %p",
776                                         TD_CC_GET (ohci_cpu_to_le32 (td_list->hwINFO)), td_list);
777                         if (td_list->ed->hwHeadP & ohci_cpu_to_le32 (0x1)) {
778                                 if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
779                                         td_list->ed->hwHeadP =
780                                                 (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & ohci_cpu_to_le32 (0xfffffff0)) |
781                                                                         (td_list->ed->hwHeadP & ohci_cpu_to_le32 (0x2));
782                                         lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
783                                 } else
784                                         td_list->ed->hwHeadP &= ohci_cpu_to_le32 (0xfffffff2);
785                         }
786 #ifdef CONFIG_MPC5200
787                         td_list->hwNextTD = 0;
788 #endif
789                 }
790
791                 td_list->next_dl_td = td_rev;
792                 td_rev = td_list;
793                 td_list_hc = ohci_cpu_to_le32 (td_list->hwNextTD) & 0xfffffff0;
794         }
795         return td_list;
796 }
797
798 /*-------------------------------------------------------------------------*/
799
800 /* td done list */
801 static int dl_done_list (ohci_t *ohci, td_t *td_list)
802 {
803         td_t *td_list_next = NULL;
804         ed_t *ed;
805         int cc = 0;
806         int stat = 0;
807         /* urb_t *urb; */
808         urb_priv_t *lurb_priv;
809         __u32 tdINFO, edHeadP, edTailP;
810
811         while (td_list) {
812                 td_list_next = td_list->next_dl_td;
813
814                 lurb_priv = &urb_priv;
815                 tdINFO = ohci_cpu_to_le32 (td_list->hwINFO);
816
817                 ed = td_list->ed;
818
819                 dl_transfer_length(td_list);
820
821                 /* error code of transfer */
822                 cc = TD_CC_GET (tdINFO);
823                 if (++(lurb_priv->td_cnt) == lurb_priv->length) {
824                         if ((ed->state & (ED_OPER | ED_UNLINK))
825                                         && (lurb_priv->state != URB_DEL)) {
826                                 dbg("ConditionCode %#x", cc);
827                                 stat = cc_to_error[cc];
828                                 urb_finished = 1;
829                         }
830                 }
831
832                 if (ed->state != ED_NEW) {
833                         edHeadP = ohci_cpu_to_le32 (ed->hwHeadP) & 0xfffffff0;
834                         edTailP = ohci_cpu_to_le32 (ed->hwTailP);
835
836                         /* unlink eds if they are not busy */
837                         if ((edHeadP == edTailP) && (ed->state == ED_OPER))
838                                 ep_unlink (ohci, ed);
839                 }
840
841                 td_list = td_list_next;
842         }
843         return stat;
844 }
845
846 /*-------------------------------------------------------------------------*
847  * Virtual Root Hub
848  *-------------------------------------------------------------------------*/
849
850 #include <usbroothubdes.h>
851
852 /* Hub class-specific descriptor is constructed dynamically */
853
854
855 /*-------------------------------------------------------------------------*/
856
857 #define OK(x)                   len = (x); break
858 #ifdef DEBUG
859 #define WR_RH_STAT(x)           {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
860 #define WR_RH_PORTSTAT(x)       {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
861 #else
862 #define WR_RH_STAT(x)           writel((x), &gohci.regs->roothub.status)
863 #define WR_RH_PORTSTAT(x)       writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
864 #endif
865 #define RD_RH_STAT              roothub_status(&gohci)
866 #define RD_RH_PORTSTAT          roothub_portstatus(&gohci,wIndex-1)
867
868 /* request to virtual root hub */
869
870 int rh_check_port_status(ohci_t *controller)
871 {
872         __u32 temp, ndp, i;
873         int res;
874
875         res = -1;
876         temp = roothub_a (controller);
877         ndp = (temp & RH_A_NDP);
878         for (i = 0; i < ndp; i++) {
879                 temp = roothub_portstatus (controller, i);
880                 /* check for a device disconnect */
881                 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
882                         (RH_PS_PESC | RH_PS_CSC)) &&
883                         ((temp & RH_PS_CCS) == 0)) {
884                         res = i;
885                         break;
886                 }
887         }
888         return res;
889 }
890
891 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
892                 void *buffer, int transfer_len, struct devrequest *cmd)
893 {
894         void * data = buffer;
895         int leni = transfer_len;
896         int len = 0;
897         int stat = 0;
898         __u32 datab[4];
899         __u8 *data_buf = (__u8 *)datab;
900         __u16 bmRType_bReq;
901         __u16 wValue;
902         __u16 wIndex;
903         __u16 wLength;
904
905 #ifdef DEBUG
906 urb_priv.actual_length = 0;
907 pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
908 #endif
909         if (usb_pipeint(pipe)) {
910                 info("Root-Hub submit IRQ: NOT implemented");
911                 return 0;
912         }
913
914         bmRType_bReq  = cmd->requesttype | (cmd->request << 8);
915         wValue        = m16_swap (cmd->value);
916         wIndex        = m16_swap (cmd->index);
917         wLength       = m16_swap (cmd->length);
918
919         info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
920                 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
921
922         switch (bmRType_bReq) {
923         /* Request Destination:
924            without flags: Device,
925            RH_INTERFACE: interface,
926            RH_ENDPOINT: endpoint,
927            RH_CLASS means HUB here,
928            RH_OTHER | RH_CLASS  almost ever means HUB_PORT here
929         */
930
931         case RH_GET_STATUS:
932                         *(__u16 *) data_buf = m16_swap (1); OK (2);
933         case RH_GET_STATUS | RH_INTERFACE:
934                         *(__u16 *) data_buf = m16_swap (0); OK (2);
935         case RH_GET_STATUS | RH_ENDPOINT:
936                         *(__u16 *) data_buf = m16_swap (0); OK (2);
937         case RH_GET_STATUS | RH_CLASS:
938                         *(__u32 *) data_buf = m32_swap (
939                                 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
940                         OK (4);
941         case RH_GET_STATUS | RH_OTHER | RH_CLASS:
942                         *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
943
944         case RH_CLEAR_FEATURE | RH_ENDPOINT:
945                 switch (wValue) {
946                         case (RH_ENDPOINT_STALL): OK (0);
947                 }
948                 break;
949
950         case RH_CLEAR_FEATURE | RH_CLASS:
951                 switch (wValue) {
952                         case RH_C_HUB_LOCAL_POWER:
953                                 OK(0);
954                         case (RH_C_HUB_OVER_CURRENT):
955                                         WR_RH_STAT(RH_HS_OCIC); OK (0);
956                 }
957                 break;
958
959         case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
960                 switch (wValue) {
961                         case (RH_PORT_ENABLE):
962                                         WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
963                         case (RH_PORT_SUSPEND):
964                                         WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
965                         case (RH_PORT_POWER):
966                                         WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
967                         case (RH_C_PORT_CONNECTION):
968                                         WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
969                         case (RH_C_PORT_ENABLE):
970                                         WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
971                         case (RH_C_PORT_SUSPEND):
972                                         WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
973                         case (RH_C_PORT_OVER_CURRENT):
974                                         WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
975                         case (RH_C_PORT_RESET):
976                                         WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
977                 }
978                 break;
979
980         case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
981                 switch (wValue) {
982                         case (RH_PORT_SUSPEND):
983                                         WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
984                         case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
985                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
986                                             WR_RH_PORTSTAT (RH_PS_PRS);
987                                         OK (0);
988                         case (RH_PORT_POWER):
989                                         WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
990                         case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
991                                         if (RD_RH_PORTSTAT & RH_PS_CCS)
992                                             WR_RH_PORTSTAT (RH_PS_PES );
993                                         OK (0);
994                 }
995                 break;
996
997         case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
998
999         case RH_GET_DESCRIPTOR:
1000                 switch ((wValue & 0xff00) >> 8) {
1001                         case (0x01): /* device descriptor */
1002                                 len = min_t(unsigned int,
1003                                           leni,
1004                                           min_t(unsigned int,
1005                                               sizeof (root_hub_dev_des),
1006                                               wLength));
1007                                 data_buf = root_hub_dev_des; OK(len);
1008                         case (0x02): /* configuration descriptor */
1009                                 len = min_t(unsigned int,
1010                                           leni,
1011                                           min_t(unsigned int,
1012                                               sizeof (root_hub_config_des),
1013                                               wLength));
1014                                 data_buf = root_hub_config_des; OK(len);
1015                         case (0x03): /* string descriptors */
1016                                 if(wValue==0x0300) {
1017                                         len = min_t(unsigned int,
1018                                                   leni,
1019                                                   min_t(unsigned int,
1020                                                       sizeof (root_hub_str_index0),
1021                                                       wLength));
1022                                         data_buf = root_hub_str_index0;
1023                                         OK(len);
1024                                 }
1025                                 if(wValue==0x0301) {
1026                                         len = min_t(unsigned int,
1027                                                   leni,
1028                                                   min_t(unsigned int,
1029                                                       sizeof (root_hub_str_index1),
1030                                                       wLength));
1031                                         data_buf = root_hub_str_index1;
1032                                         OK(len);
1033                         }
1034                         default:
1035                                 stat = USB_ST_STALLED;
1036                 }
1037                 break;
1038
1039         case RH_GET_DESCRIPTOR | RH_CLASS:
1040             {
1041                     __u32 temp = roothub_a (&gohci);
1042
1043                     data_buf [0] = 9;           /* min length; */
1044                     data_buf [1] = 0x29;
1045                     data_buf [2] = temp & RH_A_NDP;
1046                     data_buf [3] = 0;
1047                     if (temp & RH_A_PSM)        /* per-port power switching? */
1048                         data_buf [3] |= 0x1;
1049                     if (temp & RH_A_NOCP)       /* no overcurrent reporting? */
1050                         data_buf [3] |= 0x10;
1051                     else if (temp & RH_A_OCPM)  /* per-port overcurrent reporting? */
1052                         data_buf [3] |= 0x8;
1053
1054                     /* corresponds to data_buf[4-7] */
1055                     datab [1] = 0;
1056                     data_buf [5] = (temp & RH_A_POTPGT) >> 24;
1057                     temp = roothub_b (&gohci);
1058                     data_buf [7] = temp & RH_B_DR;
1059                     if (data_buf [2] < 7) {
1060                         data_buf [8] = 0xff;
1061                     } else {
1062                         data_buf [0] += 2;
1063                         data_buf [8] = (temp & RH_B_DR) >> 8;
1064                         data_buf [10] = data_buf [9] = 0xff;
1065                     }
1066
1067                     len = min_t(unsigned int, leni,
1068                               min_t(unsigned int, data_buf [0], wLength));
1069                     OK (len);
1070                 }
1071
1072         case RH_GET_CONFIGURATION:      *(__u8 *) data_buf = 0x01; OK (1);
1073
1074         case RH_SET_CONFIGURATION:      WR_RH_STAT (0x10000); OK (0);
1075
1076         default:
1077                 dbg ("unsupported root hub command");
1078                 stat = USB_ST_STALLED;
1079         }
1080
1081 #ifdef  DEBUG
1082         ohci_dump_roothub (&gohci, 1);
1083 #endif
1084
1085         len = min_t(int, len, leni);
1086         if (data != data_buf)
1087             memcpy (data, data_buf, len);
1088         dev->act_len = len;
1089         dev->status = stat;
1090
1091 #ifdef DEBUG
1092         if (transfer_len)
1093                 urb_priv.actual_length = transfer_len;
1094         pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1095 #endif
1096
1097         return stat;
1098 }
1099
1100 /*-------------------------------------------------------------------------*/
1101
1102 /* common code for handling submit messages - used for all but root hub */
1103 /* accesses. */
1104 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1105                 int transfer_len, struct devrequest *setup, int interval)
1106 {
1107         int stat = 0;
1108         int maxsize = usb_maxpacket(dev, pipe);
1109         int timeout;
1110
1111         /* device pulled? Shortcut the action. */
1112         if (devgone == dev) {
1113                 dev->status = USB_ST_CRC_ERR;
1114                 return 0;
1115         }
1116
1117 #ifdef DEBUG
1118         urb_priv.actual_length = 0;
1119         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1120 #endif
1121         if (!maxsize) {
1122                 err("submit_common_message: pipesize for pipe %lx is zero",
1123                         pipe);
1124                 return -1;
1125         }
1126
1127         if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
1128                 err("sohci_submit_job failed");
1129                 return -1;
1130         }
1131
1132         /* allow more time for a BULK device to react - some are slow */
1133 #define BULK_TO  5000   /* timeout in milliseconds */
1134         if (usb_pipebulk(pipe))
1135                 timeout = BULK_TO;
1136         else
1137                 timeout = 100;
1138
1139         /* wait for it to complete */
1140         for (;;) {
1141                 /* check whether the controller is done */
1142                 stat = hc_interrupt();
1143                 if (stat < 0) {
1144                         stat = USB_ST_CRC_ERR;
1145                         break;
1146                 }
1147
1148                 /* NOTE: since we are not interrupt driven in U-Boot and always
1149                  * handle only one URB at a time, we cannot assume the
1150                  * transaction finished on the first successful return from
1151                  * hc_interrupt().. unless the flag for current URB is set,
1152                  * meaning that all TD's to/from device got actually
1153                  * transferred and processed. If the current URB is not
1154                  * finished we need to re-iterate this loop so as
1155                  * hc_interrupt() gets called again as there needs to be some
1156                  * more TD's to process still */
1157                 if ((stat >= 0) && (stat != 0xff) && (urb_finished)) {
1158                         /* 0xff is returned for an SF-interrupt */
1159                         break;
1160                 }
1161
1162                 if (--timeout) {
1163                         mdelay(1);
1164                         if (!urb_finished)
1165                                 dbg("\%");
1166
1167                 } else {
1168                         err("CTL:TIMEOUT ");
1169                         dbg("submit_common_msg: TO status %x\n", stat);
1170                         stat = USB_ST_CRC_ERR;
1171                         urb_finished = 1;
1172                         break;
1173                 }
1174         }
1175 #if 0
1176         /* we got an Root Hub Status Change interrupt */
1177         if (got_rhsc) {
1178 #ifdef DEBUG
1179                 ohci_dump_roothub (&gohci, 1);
1180 #endif
1181                 got_rhsc = 0;
1182                 /* abuse timeout */
1183                 timeout = rh_check_port_status(&gohci);
1184                 if (timeout >= 0) {
1185 #if 0 /* this does nothing useful, but leave it here in case that changes */
1186                         /* the called routine adds 1 to the passed value */
1187                         usb_hub_port_connect_change(gohci.rh.dev, timeout - 1);
1188 #endif
1189                         /*
1190                          * XXX
1191                          * This is potentially dangerous because it assumes
1192                          * that only one device is ever plugged in!
1193                          */
1194                         devgone = dev;
1195                 }
1196         }
1197 #endif
1198
1199         dev->status = stat;
1200         dev->act_len = transfer_len;
1201
1202 #ifdef DEBUG
1203         pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
1204 #endif
1205
1206         /* free TDs in urb_priv */
1207         urb_free_priv (&urb_priv);
1208         return 0;
1209 }
1210
1211 /* submit routines called from usb.c */
1212 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1213                 int transfer_len)
1214 {
1215         info("submit_bulk_msg");
1216         return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1217 }
1218
1219 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1220                 int transfer_len, struct devrequest *setup)
1221 {
1222         int maxsize = usb_maxpacket(dev, pipe);
1223
1224         info("submit_control_msg");
1225 #ifdef DEBUG
1226         urb_priv.actual_length = 0;
1227         pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1228 #endif
1229         if (!maxsize) {
1230                 err("submit_control_message: pipesize for pipe %lx is zero",
1231                         pipe);
1232                 return -1;
1233         }
1234         if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1235                 gohci.rh.dev = dev;
1236                 /* root hub - redirect */
1237                 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1238                         setup);
1239         }
1240
1241         return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1242 }
1243
1244 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1245                 int transfer_len, int interval)
1246 {
1247         info("submit_int_msg");
1248         return -1;
1249 }
1250
1251 /*-------------------------------------------------------------------------*
1252  * HC functions
1253  *-------------------------------------------------------------------------*/
1254
1255 /* reset the HC and BUS */
1256
1257 static int hc_reset (ohci_t *ohci)
1258 {
1259         int timeout = 30;
1260         int smm_timeout = 50; /* 0,5 sec */
1261
1262         if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
1263                 writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
1264                 info("USB HC TakeOver from SMM");
1265                 while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
1266                         mdelay (10);
1267                         if (--smm_timeout == 0) {
1268                                 err("USB HC TakeOver failed!");
1269                                 return -1;
1270                         }
1271                 }
1272         }
1273
1274         /* Disable HC interrupts */
1275         writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
1276
1277         dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;",
1278                 ohci->slot_name,
1279                 readl (&ohci->regs->control));
1280
1281         /* Reset USB (needed by some controllers) */
1282         ohci->hc_control = 0;
1283         writel (ohci->hc_control, &ohci->regs->control);
1284
1285         /* HC Reset requires max 10 us delay */
1286         writel (OHCI_HCR,  &ohci->regs->cmdstatus);
1287         while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1288                 if (--timeout == 0) {
1289                         err("USB HC reset timed out!");
1290                         return -1;
1291                 }
1292                 udelay (1);
1293         }
1294         return 0;
1295 }
1296
1297 /*-------------------------------------------------------------------------*/
1298
1299 /* Start an OHCI controller, set the BUS operational
1300  * enable interrupts
1301  * connect the virtual root hub */
1302
1303 static int hc_start (ohci_t * ohci)
1304 {
1305         __u32 mask;
1306         unsigned int fminterval;
1307
1308         ohci->disabled = 1;
1309
1310         /* Tell the controller where the control and bulk lists are
1311          * The lists are empty now. */
1312
1313         writel (0, &ohci->regs->ed_controlhead);
1314         writel (0, &ohci->regs->ed_bulkhead);
1315
1316         writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
1317
1318         fminterval = 0x2edf;
1319         writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
1320         fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1321         writel (fminterval, &ohci->regs->fminterval);
1322         writel (0x628, &ohci->regs->lsthresh);
1323
1324         /* start controller operations */
1325         ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1326         ohci->disabled = 0;
1327         writel (ohci->hc_control, &ohci->regs->control);
1328
1329         /* disable all interrupts */
1330         mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1331                         OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1332                         OHCI_INTR_OC | OHCI_INTR_MIE);
1333         writel (mask, &ohci->regs->intrdisable);
1334         /* clear all interrupts */
1335         mask &= ~OHCI_INTR_MIE;
1336         writel (mask, &ohci->regs->intrstatus);
1337         /* Choose the interrupts we care about now  - but w/o MIE */
1338         mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1339         writel (mask, &ohci->regs->intrenable);
1340
1341 #ifdef  OHCI_USE_NPS
1342         /* required for AMD-756 and some Mac platforms */
1343         writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
1344                 &ohci->regs->roothub.a);
1345         writel (RH_HS_LPSC, &ohci->regs->roothub.status);
1346 #endif  /* OHCI_USE_NPS */
1347
1348         /* POTPGT delay is bits 24-31, in 2 ms units. */
1349         mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
1350
1351         /* connect the virtual root hub */
1352         ohci->rh.devnum = 0;
1353
1354         return 0;
1355 }
1356
1357 /*-------------------------------------------------------------------------*/
1358
1359 /* an interrupt happens */
1360
1361 static int
1362 hc_interrupt (void)
1363 {
1364         ohci_t *ohci = &gohci;
1365         struct ohci_regs *regs = ohci->regs;
1366         int ints;
1367         int stat = -1;
1368
1369         if ((ohci->hcca->done_head != 0) &&
1370              !(ohci_cpu_to_le32(ohci->hcca->done_head) & 0x01)) {
1371
1372                 ints =  OHCI_INTR_WDH;
1373
1374         } else if ((ints = readl (&regs->intrstatus)) == ~(u32)0) {
1375                 ohci->disabled++;
1376                 err ("%s device removed!", ohci->slot_name);
1377                 return -1;
1378
1379         } else if ((ints &= readl (&regs->intrenable)) == 0) {
1380                 dbg("hc_interrupt: returning..\n");
1381                 return 0xff;
1382         }
1383
1384         /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1385
1386         if (ints & OHCI_INTR_RHSC) {
1387                 got_rhsc = 1;
1388                 stat = 0xff;
1389         }
1390
1391         if (ints & OHCI_INTR_UE) {
1392                 ohci->disabled++;
1393                 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1394                         ohci->slot_name);
1395                 /* e.g. due to PCI Master/Target Abort */
1396
1397 #ifdef  DEBUG
1398                 ohci_dump (ohci, 1);
1399 #endif
1400                 /* FIXME: be optimistic, hope that bug won't repeat often. */
1401                 /* Make some non-interrupt context restart the controller. */
1402                 /* Count and limit the retries though; either hardware or */
1403                 /* software errors can go forever... */
1404                 hc_reset (ohci);
1405                 return -1;
1406         }
1407
1408         if (ints & OHCI_INTR_WDH) {
1409                 writel (OHCI_INTR_WDH, &regs->intrdisable);
1410                 stat = dl_done_list (&gohci, dl_reverse_done_list (&gohci));
1411                 writel (OHCI_INTR_WDH, &regs->intrenable);
1412         }
1413
1414         if (ints & OHCI_INTR_SO) {
1415                 dbg("USB Schedule overrun\n");
1416                 writel (OHCI_INTR_SO, &regs->intrenable);
1417                 stat = -1;
1418         }
1419
1420         /* FIXME:  this assumes SOF (1/ms) interrupts don't get lost... */
1421         if (ints & OHCI_INTR_SF) {
1422                 unsigned int frame = ohci_cpu_to_le16 (ohci->hcca->frame_no) & 1;
1423                 mdelay(1);
1424                 writel (OHCI_INTR_SF, &regs->intrdisable);
1425                 if (ohci->ed_rm_list[frame] != NULL)
1426                         writel (OHCI_INTR_SF, &regs->intrenable);
1427                 stat = 0xff;
1428         }
1429
1430         writel (ints, &regs->intrstatus);
1431         return stat;
1432 }
1433
1434 /*-------------------------------------------------------------------------*/
1435
1436 /*-------------------------------------------------------------------------*/
1437
1438 /* De-allocate all resources.. */
1439
1440 static void hc_release_ohci (ohci_t *ohci)
1441 {
1442         dbg ("USB HC release ohci usb-%s", ohci->slot_name);
1443
1444         if (!ohci->disabled)
1445                 hc_reset (ohci);
1446 }
1447
1448 /*-------------------------------------------------------------------------*/
1449
1450 /*
1451  * low level initalisation routine, called from usb.c
1452  */
1453 static char ohci_inited = 0;
1454
1455 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
1456 {
1457         memset (&gohci, 0, sizeof (ohci_t));
1458         memset (&urb_priv, 0, sizeof (urb_priv_t));
1459
1460         /* align the storage */
1461         if ((__u32)&ghcca[0] & 0xff) {
1462                 err("HCCA not aligned!!");
1463                 return -1;
1464         }
1465         phcca = &ghcca[0];
1466         info("aligned ghcca %p", phcca);
1467         memset(&ohci_dev, 0, sizeof(struct ohci_device));
1468         if ((__u32)&ohci_dev.ed[0] & 0x7) {
1469                 err("EDs not aligned!!");
1470                 return -1;
1471         }
1472         memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1473         if ((__u32)gtd & 0x7) {
1474                 err("TDs not aligned!!");
1475                 return -1;
1476         }
1477         ptd = gtd;
1478         gohci.hcca = phcca;
1479         memset (phcca, 0, sizeof (struct ohci_hcca));
1480
1481         gohci.disabled = 1;
1482         gohci.sleeping = 0;
1483         gohci.irq = -1;
1484 #if defined(CONFIG_440EP)
1485         gohci.regs = (struct ohci_regs *)(CONFIG_SYS_PERIPHERAL_BASE | 0x1000);
1486 #elif defined(CONFIG_440EPX) || defined(CONFIG_SYS_USB_HOST)
1487         gohci.regs = (struct ohci_regs *)(CONFIG_SYS_USB_HOST);
1488 #endif
1489
1490         gohci.flags = 0;
1491         gohci.slot_name = "ppc440";
1492
1493         if (hc_reset (&gohci) < 0) {
1494                 hc_release_ohci (&gohci);
1495                 return -1;
1496         }
1497
1498         if (hc_start (&gohci) < 0) {
1499                 err ("can't start usb-%s", gohci.slot_name);
1500                 hc_release_ohci (&gohci);
1501                 return -1;
1502         }
1503
1504 #ifdef  DEBUG
1505         ohci_dump (&gohci, 1);
1506 #endif
1507         ohci_inited = 1;
1508         urb_finished = 1;
1509
1510         return 0;
1511 }
1512
1513 int usb_lowlevel_stop(int index)
1514 {
1515         /* this gets called really early - before the controller has */
1516         /* even been initialized! */
1517         if (!ohci_inited)
1518                 return 0;
1519         /* TODO release any interrupts, etc. */
1520         /* call hc_release_ohci() here ? */
1521         hc_reset (&gohci);
1522         return 0;
1523 }
1524
1525 #endif /* CONFIG_USB_OHCI */