2 * URB OHCI HCD (Host Controller Driver) for USB on the PPC440EP.
4 * (C) Copyright 2003-2004
5 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
8 * Pierre Aubert, Staubli Faverges <p.aubert@staubli.com>
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
14 * SPDX-License-Identifier: GPL-2.0+
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!
24 #ifdef CONFIG_USB_OHCI
30 #define OHCI_USE_NPS /* force NoPowerSwitching mode */
31 #undef OHCI_VERBOSE_DEBUG /* not always helpful */
34 #undef OHCI_FILL_TRACE
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
40 #define readl(a) (*((volatile u32 *)(a)))
41 #define writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
43 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
46 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
48 #define dbg(format, arg...) do {} while(0)
50 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
52 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
54 #define info(format, arg...) do {} while(0)
57 #define m16_swap(x) swap_16(x)
58 #define m32_swap(x) swap_32(x)
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)
64 #define ohci_cpu_to_le16(x) swap_16(x)
65 #define ohci_cpu_to_le32(x) swap_32(x)
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
;
80 /* device which was disconnected */
81 struct usb_device
*devgone
;
82 /* flag guarding URB transation */
85 /*-------------------------------------------------------------------------*/
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.
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) \
96 temp = readl (&hc->regs->roothub.register); \
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); }
109 /* forward declaration */
110 static int hc_interrupt (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
);
115 /*-------------------------------------------------------------------------*
116 * URB support functions
117 *-------------------------------------------------------------------------*/
119 /* free HCD-private data associated with this URB */
121 static void urb_free_priv (urb_priv_t
* urb
)
127 last
= urb
->length
- 1;
129 for (i
= 0; i
<= last
; i
++) {
139 /*-------------------------------------------------------------------------*/
142 static int sohci_get_current_frame_number (struct usb_device
* dev
);
144 /* debug| print the main components of an URB
145 * small: 0) header + data packets 1) just header */
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
)
150 urb_priv_t
* purb
= &urb_priv
;
152 dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
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"),
161 transfer_len
, dev
->status
);
162 #ifdef OHCI_VERBOSE_DEBUG
166 if (usb_pipecontrol (pipe
)) {
167 printf (__FILE__
": cmd(8):");
168 for (i
= 0; i
< 8 ; i
++)
169 printf (" %02x", ((__u8
*) setup
) [i
]);
172 if (transfer_len
> 0 && buffer
) {
173 printf (__FILE__
": data(%d/%d):",
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
? "...": "");
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
) {
190 for (i
= 0; i
< 32; i
++) {
192 ed_p
= &(ohci
->hcca
->int_table
[i
]);
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
;
205 static void ohci_dump_intr_mask (char *label
, __u32 mask
)
207 dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
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" : ""
222 static void maybe_print_eds (char *label
, __u32 value
)
224 ed_t
*edp
= (ed_t
*)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
);
235 static char * hcfs2string (int 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";
246 /* dump control and status registers */
247 static void ohci_dump_status (ohci_t
*controller
)
249 struct ohci_regs
*regs
= controller
->regs
;
252 temp
= readl (®s
->revision
) & 0xff;
254 dbg ("spec %d.%d", (temp
>> 4), (temp
& 0x0f));
256 temp
= readl (®s
->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
269 temp
= readl (®s
->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" : ""
278 ohci_dump_intr_mask ("intrstatus", readl (®s
->intrstatus
));
279 ohci_dump_intr_mask ("intrenable", readl (®s
->intrenable
));
281 maybe_print_eds ("ed_periodcurrent", readl (®s
->ed_periodcurrent
));
283 maybe_print_eds ("ed_controlhead", readl (®s
->ed_controlhead
));
284 maybe_print_eds ("ed_controlcurrent", readl (®s
->ed_controlcurrent
));
286 maybe_print_eds ("ed_bulkhead", readl (®s
->ed_bulkhead
));
287 maybe_print_eds ("ed_bulkcurrent", readl (®s
->ed_bulkcurrent
));
289 maybe_print_eds ("donehead", readl (®s
->donehead
));
292 static void ohci_dump_roothub (ohci_t
*controller
, int verbose
)
296 temp
= roothub_a (controller
);
297 ndp
= (temp
& RH_A_NDP
);
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" : "",
309 temp
= roothub_b (controller
);
310 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
312 (temp
& RH_B_PPCM
) >> 16,
315 temp
= roothub_status (controller
);
316 dbg ("roothub.status: %08x%s%s%s%s%s%s",
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" : ""
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",
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" : "",
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" : "",
344 (temp
& RH_PS_PES
) ? " PES" : "",
345 (temp
& RH_PS_CCS
) ? " CCS" : ""
350 static void ohci_dump (ohci_t
*controller
, int verbose
)
352 dbg ("OHCI controller usb-%s state", controller
->slot_name
);
354 /* dumps some of the state we know about */
355 ohci_dump_status (controller
);
357 ep_print_int_eds (controller
, "hcca");
358 dbg ("hcca frame #%04x", controller
->hcca
->frame_no
);
359 ohci_dump_roothub (controller
, 1);
365 /*-------------------------------------------------------------------------*
366 * Interface functions (URB)
367 *-------------------------------------------------------------------------*/
369 /* get a transfer request */
371 int sohci_submit_job(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
372 int transfer_len
, struct devrequest
*setup
, int interval
)
376 urb_priv_t
*purb_priv
;
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");
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 */
392 err("sohci_submit_job: URB NOT FINISHED");
395 /* we're about to begin a new transaction here so mark the URB unfinished */
398 /* every endpoint has a ed, locate and fill it */
399 if (!(ed
= ep_add_ed (dev
, pipe
))) {
400 err("sohci_submit_job: ENOMEM");
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;
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;
415 if (size
>= (N_URB_TD
- 1)) {
416 err("need %d TDs, only have %d", size
, N_URB_TD
);
419 purb_priv
= &urb_priv
;
420 purb_priv
->pipe
= pipe
;
422 /* fill the private part of the URB */
423 purb_priv
->length
= size
;
425 purb_priv
->actual_length
= 0;
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");
439 if (ed
->state
== ED_NEW
|| (ed
->state
& ED_DEL
)) {
440 urb_free_priv (purb_priv
);
441 err("sohci_submit_job: EINVAL");
445 /* link the ed into a chain if is not already */
446 if (ed
->state
!= ED_OPER
)
449 /* fill the TDs and link it to the ed */
450 td_submit_job(dev
, pipe
, buffer
, transfer_len
, setup
, purb_priv
, interval
);
455 /*-------------------------------------------------------------------------*/
458 /* tell us the current USB frame number */
460 static int sohci_get_current_frame_number (struct usb_device
*usb_dev
)
462 ohci_t
*ohci
= &gohci
;
464 return ohci_cpu_to_le16 (ohci
->hcca
->frame_no
);
468 /*-------------------------------------------------------------------------*
469 * ED handling functions
470 *-------------------------------------------------------------------------*/
472 /* link an ed into one of the HC chains */
474 static int ep_link (ohci_t
*ohci
, ed_t
*edi
)
476 volatile ed_t
*ed
= edi
;
483 if (ohci
->ed_controltail
== NULL
) {
484 writel (ed
, &ohci
->regs
->ed_controlhead
);
486 ohci
->ed_controltail
->hwNextED
= ohci_cpu_to_le32 ((unsigned long)ed
);
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
);
494 ohci
->ed_controltail
= edi
;
499 if (ohci
->ed_bulktail
== NULL
) {
500 writel (ed
, &ohci
->regs
->ed_bulkhead
);
502 ohci
->ed_bulktail
->hwNextED
= ohci_cpu_to_le32 ((unsigned long)ed
);
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
);
510 ohci
->ed_bulktail
= edi
;
516 /*-------------------------------------------------------------------------*/
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 */
523 static int ep_unlink (ohci_t
*ohci
, ed_t
*edi
)
525 volatile ed_t
*ed
= edi
;
527 ed
->hwINFO
|= ohci_cpu_to_le32 (OHCI_ED_SKIP
);
531 if (ed
->ed_prev
== NULL
) {
533 ohci
->hc_control
&= ~OHCI_CTRL_CLE
;
534 writel (ohci
->hc_control
, &ohci
->regs
->control
);
536 writel (ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)), &ohci
->regs
->ed_controlhead
);
538 ed
->ed_prev
->hwNextED
= ed
->hwNextED
;
540 if (ohci
->ed_controltail
== ed
) {
541 ohci
->ed_controltail
= ed
->ed_prev
;
543 ((ed_t
*)ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)))->ed_prev
= ed
->ed_prev
;
548 if (ed
->ed_prev
== NULL
) {
550 ohci
->hc_control
&= ~OHCI_CTRL_BLE
;
551 writel (ohci
->hc_control
, &ohci
->regs
->control
);
553 writel (ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)), &ohci
->regs
->ed_bulkhead
);
555 ed
->ed_prev
->hwNextED
= ed
->hwNextED
;
557 if (ohci
->ed_bulktail
== ed
) {
558 ohci
->ed_bulktail
= ed
->ed_prev
;
560 ((ed_t
*)ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)))->ed_prev
= ed
->ed_prev
;
564 ed
->state
= ED_UNLINK
;
569 /*-------------------------------------------------------------------------*/
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 */
577 static ed_t
* ep_add_ed (struct usb_device
*usb_dev
, unsigned long pipe
)
583 ed
= ed_ret
= &ohci_dev
.ed
[(usb_pipeendpoint (pipe
) << 1) |
584 (usb_pipecontrol (pipe
)? 0: usb_pipeout (pipe
))];
586 if ((ed
->state
& ED_DEL
) || (ed
->state
& ED_URB_DEL
)) {
587 err("ep_add_ed: pending delete");
588 /* pending delete request */
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
);
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);
613 /*-------------------------------------------------------------------------*
614 * TD handling functions
615 *-------------------------------------------------------------------------*/
617 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
619 static void td_fill (ohci_t
*ohci
, unsigned int info
,
621 struct usb_device
*dev
, int index
, urb_priv_t
*urb_priv
)
623 volatile td_t
*td
, *td_pt
;
624 #ifdef OHCI_FILL_TRACE
628 if (index
> urb_priv
->length
) {
629 err("index > length");
632 /* use this td as the next dummy */
633 td_pt
= urb_priv
->td
[index
];
636 /* fill the old dummy TD */
637 td
= urb_priv
->td
[index
] = (td_t
*)(ohci_cpu_to_le32 (urb_priv
->ed
->hwTailP
) & ~0xf);
639 td
->ed
= urb_priv
->ed
;
640 td
->next_dl_td
= NULL
;
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
]);
653 td
->hwINFO
= ohci_cpu_to_le32 (info
);
654 td
->hwCBP
= ohci_cpu_to_le32 ((unsigned long)data
);
656 td
->hwBE
= ohci_cpu_to_le32 ((unsigned long)(data
+ len
- 1));
659 td
->hwNextTD
= ohci_cpu_to_le32 ((unsigned long)td_pt
);
661 /* append to queue */
662 td
->ed
->hwTailP
= td
->hwNextTD
;
665 /*-------------------------------------------------------------------------*/
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
)
671 ohci_t
*ohci
= &gohci
;
672 int data_len
= transfer_len
;
676 unsigned int toggle
= 0;
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
;
683 usb_settoggle(dev
, usb_pipeendpoint(pipe
), usb_pipeout(pipe
), 1);
691 switch (usb_pipetype (pipe
)) {
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
++;
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
);
705 writel (OHCI_BLF
, &ohci
->regs
->cmdstatus
); /* start bulk list */
709 info
= TD_CC
| TD_DP_SETUP
| TD_T_DATA0
;
710 td_fill (ohci
, info
, setup
, 8, dev
, cnt
++, urb
);
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
);
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
);
721 writel (OHCI_CLF
, &ohci
->regs
->cmdstatus
); /* start Control list */
724 if (urb
->length
!= cnt
)
725 dbg("TD LENGTH %d != CNT %d", urb
->length
, cnt
);
728 /*-------------------------------------------------------------------------*
729 * Done List handling functions
730 *-------------------------------------------------------------------------*/
733 /* calculate the transfer length and update the urb */
735 static void dl_transfer_length(td_t
* td
)
738 urb_priv_t
*lurb_priv
= &urb_priv
;
740 tdBE
= ohci_cpu_to_le32 (td
->hwBE
);
741 tdCBP
= ohci_cpu_to_le32 (td
->hwCBP
);
744 if (!(usb_pipecontrol(lurb_priv
->pipe
) &&
745 ((td
->index
== 0) || (td
->index
== lurb_priv
->length
- 1)))) {
748 lurb_priv
->actual_length
+= tdBE
- td
->data
+ 1;
750 lurb_priv
->actual_length
+= tdCBP
- td
->data
;
755 /*-------------------------------------------------------------------------*/
757 /* replies to the request have to be on a FIFO basis so
758 * we reverse the reversed done-list */
760 static td_t
* dl_reverse_done_list (ohci_t
*ohci
)
764 td_t
*td_list
= NULL
;
765 urb_priv_t
*lurb_priv
= NULL
;
767 td_list_hc
= ohci_cpu_to_le32 (ohci
->hcca
->done_head
) & 0xfffffff0;
768 ohci
->hcca
->done_head
= 0;
771 td_list
= (td_t
*)td_list_hc
;
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;
784 td_list
->ed
->hwHeadP
&= ohci_cpu_to_le32 (0xfffffff2);
786 #ifdef CONFIG_MPC5200
787 td_list
->hwNextTD
= 0;
791 td_list
->next_dl_td
= td_rev
;
793 td_list_hc
= ohci_cpu_to_le32 (td_list
->hwNextTD
) & 0xfffffff0;
798 /*-------------------------------------------------------------------------*/
801 static int dl_done_list (ohci_t
*ohci
, td_t
*td_list
)
803 td_t
*td_list_next
= NULL
;
808 urb_priv_t
*lurb_priv
;
809 __u32 tdINFO
, edHeadP
, edTailP
;
812 td_list_next
= td_list
->next_dl_td
;
814 lurb_priv
= &urb_priv
;
815 tdINFO
= ohci_cpu_to_le32 (td_list
->hwINFO
);
819 dl_transfer_length(td_list
);
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
];
832 if (ed
->state
!= ED_NEW
) {
833 edHeadP
= ohci_cpu_to_le32 (ed
->hwHeadP
) & 0xfffffff0;
834 edTailP
= ohci_cpu_to_le32 (ed
->hwTailP
);
836 /* unlink eds if they are not busy */
837 if ((edHeadP
== edTailP
) && (ed
->state
== ED_OPER
))
838 ep_unlink (ohci
, ed
);
841 td_list
= td_list_next
;
846 /*-------------------------------------------------------------------------*
848 *-------------------------------------------------------------------------*/
850 /* Device descriptor */
851 static __u8 root_hub_dev_des
[] =
853 0x12, /* __u8 bLength; */
854 0x01, /* __u8 bDescriptorType; Device */
855 0x10, /* __u16 bcdUSB; v1.1 */
857 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
858 0x00, /* __u8 bDeviceSubClass; */
859 0x00, /* __u8 bDeviceProtocol; */
860 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
861 0x00, /* __u16 idVendor; */
863 0x00, /* __u16 idProduct; */
865 0x00, /* __u16 bcdDevice; */
867 0x00, /* __u8 iManufacturer; */
868 0x01, /* __u8 iProduct; */
869 0x00, /* __u8 iSerialNumber; */
870 0x01 /* __u8 bNumConfigurations; */
874 /* Configuration descriptor */
875 static __u8 root_hub_config_des
[] =
877 0x09, /* __u8 bLength; */
878 0x02, /* __u8 bDescriptorType; Configuration */
879 0x19, /* __u16 wTotalLength; */
881 0x01, /* __u8 bNumInterfaces; */
882 0x01, /* __u8 bConfigurationValue; */
883 0x00, /* __u8 iConfiguration; */
884 0x40, /* __u8 bmAttributes;
885 Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
886 0x00, /* __u8 MaxPower; */
889 0x09, /* __u8 if_bLength; */
890 0x04, /* __u8 if_bDescriptorType; Interface */
891 0x00, /* __u8 if_bInterfaceNumber; */
892 0x00, /* __u8 if_bAlternateSetting; */
893 0x01, /* __u8 if_bNumEndpoints; */
894 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
895 0x00, /* __u8 if_bInterfaceSubClass; */
896 0x00, /* __u8 if_bInterfaceProtocol; */
897 0x00, /* __u8 if_iInterface; */
900 0x07, /* __u8 ep_bLength; */
901 0x05, /* __u8 ep_bDescriptorType; Endpoint */
902 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
903 0x03, /* __u8 ep_bmAttributes; Interrupt */
904 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
906 0xff /* __u8 ep_bInterval; 255 ms */
909 static unsigned char root_hub_str_index0
[] =
911 0x04, /* __u8 bLength; */
912 0x03, /* __u8 bDescriptorType; String-descriptor */
913 0x09, /* __u8 lang ID */
914 0x04, /* __u8 lang ID */
917 static unsigned char root_hub_str_index1
[] =
919 28, /* __u8 bLength; */
920 0x03, /* __u8 bDescriptorType; String-descriptor */
921 'O', /* __u8 Unicode */
922 0, /* __u8 Unicode */
923 'H', /* __u8 Unicode */
924 0, /* __u8 Unicode */
925 'C', /* __u8 Unicode */
926 0, /* __u8 Unicode */
927 'I', /* __u8 Unicode */
928 0, /* __u8 Unicode */
929 ' ', /* __u8 Unicode */
930 0, /* __u8 Unicode */
931 'R', /* __u8 Unicode */
932 0, /* __u8 Unicode */
933 'o', /* __u8 Unicode */
934 0, /* __u8 Unicode */
935 'o', /* __u8 Unicode */
936 0, /* __u8 Unicode */
937 't', /* __u8 Unicode */
938 0, /* __u8 Unicode */
939 ' ', /* __u8 Unicode */
940 0, /* __u8 Unicode */
941 'H', /* __u8 Unicode */
942 0, /* __u8 Unicode */
943 'u', /* __u8 Unicode */
944 0, /* __u8 Unicode */
945 'b', /* __u8 Unicode */
946 0, /* __u8 Unicode */
949 /* Hub class-specific descriptor is constructed dynamically */
952 /*-------------------------------------------------------------------------*/
954 #define OK(x) len = (x); break
956 #define WR_RH_STAT(x) {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
957 #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
959 #define WR_RH_STAT(x) writel((x), &gohci.regs->roothub.status)
960 #define WR_RH_PORTSTAT(x) writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
962 #define RD_RH_STAT roothub_status(&gohci)
963 #define RD_RH_PORTSTAT roothub_portstatus(&gohci,wIndex-1)
965 /* request to virtual root hub */
967 int rh_check_port_status(ohci_t
*controller
)
973 temp
= roothub_a (controller
);
974 ndp
= (temp
& RH_A_NDP
);
975 for (i
= 0; i
< ndp
; i
++) {
976 temp
= roothub_portstatus (controller
, i
);
977 /* check for a device disconnect */
978 if (((temp
& (RH_PS_PESC
| RH_PS_CSC
)) ==
979 (RH_PS_PESC
| RH_PS_CSC
)) &&
980 ((temp
& RH_PS_CCS
) == 0)) {
988 static int ohci_submit_rh_msg(struct usb_device
*dev
, unsigned long pipe
,
989 void *buffer
, int transfer_len
, struct devrequest
*cmd
)
991 void * data
= buffer
;
992 int leni
= transfer_len
;
996 __u8
*data_buf
= (__u8
*)datab
;
1003 urb_priv
.actual_length
= 0;
1004 pkt_print(dev
, pipe
, buffer
, transfer_len
, cmd
, "SUB(rh)", usb_pipein(pipe
));
1006 if (usb_pipeint(pipe
)) {
1007 info("Root-Hub submit IRQ: NOT implemented");
1011 bmRType_bReq
= cmd
->requesttype
| (cmd
->request
<< 8);
1012 wValue
= m16_swap (cmd
->value
);
1013 wIndex
= m16_swap (cmd
->index
);
1014 wLength
= m16_swap (cmd
->length
);
1016 info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1017 dev
->devnum
, 8, bmRType_bReq
, wValue
, wIndex
, wLength
);
1019 switch (bmRType_bReq
) {
1020 /* Request Destination:
1021 without flags: Device,
1022 RH_INTERFACE: interface,
1023 RH_ENDPOINT: endpoint,
1024 RH_CLASS means HUB here,
1025 RH_OTHER | RH_CLASS almost ever means HUB_PORT here
1029 *(__u16
*) data_buf
= m16_swap (1); OK (2);
1030 case RH_GET_STATUS
| RH_INTERFACE
:
1031 *(__u16
*) data_buf
= m16_swap (0); OK (2);
1032 case RH_GET_STATUS
| RH_ENDPOINT
:
1033 *(__u16
*) data_buf
= m16_swap (0); OK (2);
1034 case RH_GET_STATUS
| RH_CLASS
:
1035 *(__u32
*) data_buf
= m32_swap (
1036 RD_RH_STAT
& ~(RH_HS_CRWE
| RH_HS_DRWE
));
1038 case RH_GET_STATUS
| RH_OTHER
| RH_CLASS
:
1039 *(__u32
*) data_buf
= m32_swap (RD_RH_PORTSTAT
); OK (4);
1041 case RH_CLEAR_FEATURE
| RH_ENDPOINT
:
1043 case (RH_ENDPOINT_STALL
): OK (0);
1047 case RH_CLEAR_FEATURE
| RH_CLASS
:
1049 case RH_C_HUB_LOCAL_POWER
:
1051 case (RH_C_HUB_OVER_CURRENT
):
1052 WR_RH_STAT(RH_HS_OCIC
); OK (0);
1056 case RH_CLEAR_FEATURE
| RH_OTHER
| RH_CLASS
:
1058 case (RH_PORT_ENABLE
):
1059 WR_RH_PORTSTAT (RH_PS_CCS
); OK (0);
1060 case (RH_PORT_SUSPEND
):
1061 WR_RH_PORTSTAT (RH_PS_POCI
); OK (0);
1062 case (RH_PORT_POWER
):
1063 WR_RH_PORTSTAT (RH_PS_LSDA
); OK (0);
1064 case (RH_C_PORT_CONNECTION
):
1065 WR_RH_PORTSTAT (RH_PS_CSC
); OK (0);
1066 case (RH_C_PORT_ENABLE
):
1067 WR_RH_PORTSTAT (RH_PS_PESC
); OK (0);
1068 case (RH_C_PORT_SUSPEND
):
1069 WR_RH_PORTSTAT (RH_PS_PSSC
); OK (0);
1070 case (RH_C_PORT_OVER_CURRENT
):
1071 WR_RH_PORTSTAT (RH_PS_OCIC
); OK (0);
1072 case (RH_C_PORT_RESET
):
1073 WR_RH_PORTSTAT (RH_PS_PRSC
); OK (0);
1077 case RH_SET_FEATURE
| RH_OTHER
| RH_CLASS
:
1079 case (RH_PORT_SUSPEND
):
1080 WR_RH_PORTSTAT (RH_PS_PSS
); OK (0);
1081 case (RH_PORT_RESET
): /* BUG IN HUP CODE *********/
1082 if (RD_RH_PORTSTAT
& RH_PS_CCS
)
1083 WR_RH_PORTSTAT (RH_PS_PRS
);
1085 case (RH_PORT_POWER
):
1086 WR_RH_PORTSTAT (RH_PS_PPS
); OK (0);
1087 case (RH_PORT_ENABLE
): /* BUG IN HUP CODE *********/
1088 if (RD_RH_PORTSTAT
& RH_PS_CCS
)
1089 WR_RH_PORTSTAT (RH_PS_PES
);
1094 case RH_SET_ADDRESS
: gohci
.rh
.devnum
= wValue
; OK(0);
1096 case RH_GET_DESCRIPTOR
:
1097 switch ((wValue
& 0xff00) >> 8) {
1098 case (0x01): /* device descriptor */
1099 len
= min_t(unsigned int,
1102 sizeof (root_hub_dev_des
),
1104 data_buf
= root_hub_dev_des
; OK(len
);
1105 case (0x02): /* configuration descriptor */
1106 len
= min_t(unsigned int,
1109 sizeof (root_hub_config_des
),
1111 data_buf
= root_hub_config_des
; OK(len
);
1112 case (0x03): /* string descriptors */
1113 if(wValue
==0x0300) {
1114 len
= min_t(unsigned int,
1117 sizeof (root_hub_str_index0
),
1119 data_buf
= root_hub_str_index0
;
1122 if(wValue
==0x0301) {
1123 len
= min_t(unsigned int,
1126 sizeof (root_hub_str_index1
),
1128 data_buf
= root_hub_str_index1
;
1132 stat
= USB_ST_STALLED
;
1136 case RH_GET_DESCRIPTOR
| RH_CLASS
:
1138 __u32 temp
= roothub_a (&gohci
);
1140 data_buf
[0] = 9; /* min length; */
1141 data_buf
[1] = 0x29;
1142 data_buf
[2] = temp
& RH_A_NDP
;
1144 if (temp
& RH_A_PSM
) /* per-port power switching? */
1145 data_buf
[3] |= 0x1;
1146 if (temp
& RH_A_NOCP
) /* no overcurrent reporting? */
1147 data_buf
[3] |= 0x10;
1148 else if (temp
& RH_A_OCPM
) /* per-port overcurrent reporting? */
1149 data_buf
[3] |= 0x8;
1151 /* corresponds to data_buf[4-7] */
1153 data_buf
[5] = (temp
& RH_A_POTPGT
) >> 24;
1154 temp
= roothub_b (&gohci
);
1155 data_buf
[7] = temp
& RH_B_DR
;
1156 if (data_buf
[2] < 7) {
1157 data_buf
[8] = 0xff;
1160 data_buf
[8] = (temp
& RH_B_DR
) >> 8;
1161 data_buf
[10] = data_buf
[9] = 0xff;
1164 len
= min_t(unsigned int, leni
,
1165 min_t(unsigned int, data_buf
[0], wLength
));
1169 case RH_GET_CONFIGURATION
: *(__u8
*) data_buf
= 0x01; OK (1);
1171 case RH_SET_CONFIGURATION
: WR_RH_STAT (0x10000); OK (0);
1174 dbg ("unsupported root hub command");
1175 stat
= USB_ST_STALLED
;
1179 ohci_dump_roothub (&gohci
, 1);
1182 len
= min_t(int, len
, leni
);
1183 if (data
!= data_buf
)
1184 memcpy (data
, data_buf
, len
);
1190 urb_priv
.actual_length
= transfer_len
;
1191 pkt_print(dev
, pipe
, buffer
, transfer_len
, cmd
, "RET(rh)", 0/*usb_pipein(pipe)*/);
1197 /*-------------------------------------------------------------------------*/
1199 /* common code for handling submit messages - used for all but root hub */
1201 int submit_common_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1202 int transfer_len
, struct devrequest
*setup
, int interval
)
1205 int maxsize
= usb_maxpacket(dev
, pipe
);
1208 /* device pulled? Shortcut the action. */
1209 if (devgone
== dev
) {
1210 dev
->status
= USB_ST_CRC_ERR
;
1215 urb_priv
.actual_length
= 0;
1216 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "SUB", usb_pipein(pipe
));
1219 err("submit_common_message: pipesize for pipe %lx is zero",
1224 if (sohci_submit_job(dev
, pipe
, buffer
, transfer_len
, setup
, interval
) < 0) {
1225 err("sohci_submit_job failed");
1229 /* allow more time for a BULK device to react - some are slow */
1230 #define BULK_TO 5000 /* timeout in milliseconds */
1231 if (usb_pipebulk(pipe
))
1236 /* wait for it to complete */
1238 /* check whether the controller is done */
1239 stat
= hc_interrupt();
1241 stat
= USB_ST_CRC_ERR
;
1245 /* NOTE: since we are not interrupt driven in U-Boot and always
1246 * handle only one URB at a time, we cannot assume the
1247 * transaction finished on the first successful return from
1248 * hc_interrupt().. unless the flag for current URB is set,
1249 * meaning that all TD's to/from device got actually
1250 * transferred and processed. If the current URB is not
1251 * finished we need to re-iterate this loop so as
1252 * hc_interrupt() gets called again as there needs to be some
1253 * more TD's to process still */
1254 if ((stat
>= 0) && (stat
!= 0xff) && (urb_finished
)) {
1255 /* 0xff is returned for an SF-interrupt */
1265 err("CTL:TIMEOUT ");
1266 dbg("submit_common_msg: TO status %x\n", stat
);
1267 stat
= USB_ST_CRC_ERR
;
1273 /* we got an Root Hub Status Change interrupt */
1276 ohci_dump_roothub (&gohci
, 1);
1280 timeout
= rh_check_port_status(&gohci
);
1282 #if 0 /* this does nothing useful, but leave it here in case that changes */
1283 /* the called routine adds 1 to the passed value */
1284 usb_hub_port_connect_change(gohci
.rh
.dev
, timeout
- 1);
1288 * This is potentially dangerous because it assumes
1289 * that only one device is ever plugged in!
1297 dev
->act_len
= transfer_len
;
1300 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "RET(ctlr)", usb_pipein(pipe
));
1303 /* free TDs in urb_priv */
1304 urb_free_priv (&urb_priv
);
1308 /* submit routines called from usb.c */
1309 int submit_bulk_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1312 info("submit_bulk_msg");
1313 return submit_common_msg(dev
, pipe
, buffer
, transfer_len
, NULL
, 0);
1316 int submit_control_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1317 int transfer_len
, struct devrequest
*setup
)
1319 int maxsize
= usb_maxpacket(dev
, pipe
);
1321 info("submit_control_msg");
1323 urb_priv
.actual_length
= 0;
1324 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "SUB", usb_pipein(pipe
));
1327 err("submit_control_message: pipesize for pipe %lx is zero",
1331 if (((pipe
>> 8) & 0x7f) == gohci
.rh
.devnum
) {
1333 /* root hub - redirect */
1334 return ohci_submit_rh_msg(dev
, pipe
, buffer
, transfer_len
,
1338 return submit_common_msg(dev
, pipe
, buffer
, transfer_len
, setup
, 0);
1341 int submit_int_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1342 int transfer_len
, int interval
)
1344 info("submit_int_msg");
1348 /*-------------------------------------------------------------------------*
1350 *-------------------------------------------------------------------------*/
1352 /* reset the HC and BUS */
1354 static int hc_reset (ohci_t
*ohci
)
1357 int smm_timeout
= 50; /* 0,5 sec */
1359 if (readl (&ohci
->regs
->control
) & OHCI_CTRL_IR
) { /* SMM owns the HC */
1360 writel (OHCI_OCR
, &ohci
->regs
->cmdstatus
); /* request ownership */
1361 info("USB HC TakeOver from SMM");
1362 while (readl (&ohci
->regs
->control
) & OHCI_CTRL_IR
) {
1364 if (--smm_timeout
== 0) {
1365 err("USB HC TakeOver failed!");
1371 /* Disable HC interrupts */
1372 writel (OHCI_INTR_MIE
, &ohci
->regs
->intrdisable
);
1374 dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;",
1376 readl (&ohci
->regs
->control
));
1378 /* Reset USB (needed by some controllers) */
1379 ohci
->hc_control
= 0;
1380 writel (ohci
->hc_control
, &ohci
->regs
->control
);
1382 /* HC Reset requires max 10 us delay */
1383 writel (OHCI_HCR
, &ohci
->regs
->cmdstatus
);
1384 while ((readl (&ohci
->regs
->cmdstatus
) & OHCI_HCR
) != 0) {
1385 if (--timeout
== 0) {
1386 err("USB HC reset timed out!");
1394 /*-------------------------------------------------------------------------*/
1396 /* Start an OHCI controller, set the BUS operational
1398 * connect the virtual root hub */
1400 static int hc_start (ohci_t
* ohci
)
1403 unsigned int fminterval
;
1407 /* Tell the controller where the control and bulk lists are
1408 * The lists are empty now. */
1410 writel (0, &ohci
->regs
->ed_controlhead
);
1411 writel (0, &ohci
->regs
->ed_bulkhead
);
1413 writel ((__u32
)ohci
->hcca
, &ohci
->regs
->hcca
); /* a reset clears this */
1415 fminterval
= 0x2edf;
1416 writel ((fminterval
* 9) / 10, &ohci
->regs
->periodicstart
);
1417 fminterval
|= ((((fminterval
- 210) * 6) / 7) << 16);
1418 writel (fminterval
, &ohci
->regs
->fminterval
);
1419 writel (0x628, &ohci
->regs
->lsthresh
);
1421 /* start controller operations */
1422 ohci
->hc_control
= OHCI_CONTROL_INIT
| OHCI_USB_OPER
;
1424 writel (ohci
->hc_control
, &ohci
->regs
->control
);
1426 /* disable all interrupts */
1427 mask
= (OHCI_INTR_SO
| OHCI_INTR_WDH
| OHCI_INTR_SF
| OHCI_INTR_RD
|
1428 OHCI_INTR_UE
| OHCI_INTR_FNO
| OHCI_INTR_RHSC
|
1429 OHCI_INTR_OC
| OHCI_INTR_MIE
);
1430 writel (mask
, &ohci
->regs
->intrdisable
);
1431 /* clear all interrupts */
1432 mask
&= ~OHCI_INTR_MIE
;
1433 writel (mask
, &ohci
->regs
->intrstatus
);
1434 /* Choose the interrupts we care about now - but w/o MIE */
1435 mask
= OHCI_INTR_RHSC
| OHCI_INTR_UE
| OHCI_INTR_WDH
| OHCI_INTR_SO
;
1436 writel (mask
, &ohci
->regs
->intrenable
);
1439 /* required for AMD-756 and some Mac platforms */
1440 writel ((roothub_a (ohci
) | RH_A_NPS
) & ~RH_A_PSM
,
1441 &ohci
->regs
->roothub
.a
);
1442 writel (RH_HS_LPSC
, &ohci
->regs
->roothub
.status
);
1443 #endif /* OHCI_USE_NPS */
1445 /* POTPGT delay is bits 24-31, in 2 ms units. */
1446 mdelay ((roothub_a (ohci
) >> 23) & 0x1fe);
1448 /* connect the virtual root hub */
1449 ohci
->rh
.devnum
= 0;
1454 /*-------------------------------------------------------------------------*/
1456 /* an interrupt happens */
1461 ohci_t
*ohci
= &gohci
;
1462 struct ohci_regs
*regs
= ohci
->regs
;
1466 if ((ohci
->hcca
->done_head
!= 0) &&
1467 !(ohci_cpu_to_le32(ohci
->hcca
->done_head
) & 0x01)) {
1469 ints
= OHCI_INTR_WDH
;
1471 } else if ((ints
= readl (®s
->intrstatus
)) == ~(u32
)0) {
1473 err ("%s device removed!", ohci
->slot_name
);
1476 } else if ((ints
&= readl (®s
->intrenable
)) == 0) {
1477 dbg("hc_interrupt: returning..\n");
1481 /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1483 if (ints
& OHCI_INTR_RHSC
) {
1488 if (ints
& OHCI_INTR_UE
) {
1490 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1492 /* e.g. due to PCI Master/Target Abort */
1495 ohci_dump (ohci
, 1);
1497 /* FIXME: be optimistic, hope that bug won't repeat often. */
1498 /* Make some non-interrupt context restart the controller. */
1499 /* Count and limit the retries though; either hardware or */
1500 /* software errors can go forever... */
1505 if (ints
& OHCI_INTR_WDH
) {
1506 writel (OHCI_INTR_WDH
, ®s
->intrdisable
);
1507 stat
= dl_done_list (&gohci
, dl_reverse_done_list (&gohci
));
1508 writel (OHCI_INTR_WDH
, ®s
->intrenable
);
1511 if (ints
& OHCI_INTR_SO
) {
1512 dbg("USB Schedule overrun\n");
1513 writel (OHCI_INTR_SO
, ®s
->intrenable
);
1517 /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */
1518 if (ints
& OHCI_INTR_SF
) {
1519 unsigned int frame
= ohci_cpu_to_le16 (ohci
->hcca
->frame_no
) & 1;
1521 writel (OHCI_INTR_SF
, ®s
->intrdisable
);
1522 if (ohci
->ed_rm_list
[frame
] != NULL
)
1523 writel (OHCI_INTR_SF
, ®s
->intrenable
);
1527 writel (ints
, ®s
->intrstatus
);
1531 /*-------------------------------------------------------------------------*/
1533 /*-------------------------------------------------------------------------*/
1535 /* De-allocate all resources.. */
1537 static void hc_release_ohci (ohci_t
*ohci
)
1539 dbg ("USB HC release ohci usb-%s", ohci
->slot_name
);
1541 if (!ohci
->disabled
)
1545 /*-------------------------------------------------------------------------*/
1548 * low level initalisation routine, called from usb.c
1550 static char ohci_inited
= 0;
1552 int usb_lowlevel_init(int index
, void **controller
)
1554 memset (&gohci
, 0, sizeof (ohci_t
));
1555 memset (&urb_priv
, 0, sizeof (urb_priv_t
));
1557 /* align the storage */
1558 if ((__u32
)&ghcca
[0] & 0xff) {
1559 err("HCCA not aligned!!");
1563 info("aligned ghcca %p", phcca
);
1564 memset(&ohci_dev
, 0, sizeof(struct ohci_device
));
1565 if ((__u32
)&ohci_dev
.ed
[0] & 0x7) {
1566 err("EDs not aligned!!");
1569 memset(gtd
, 0, sizeof(td_t
) * (NUM_TD
+ 1));
1570 if ((__u32
)gtd
& 0x7) {
1571 err("TDs not aligned!!");
1576 memset (phcca
, 0, sizeof (struct ohci_hcca
));
1581 #if defined(CONFIG_440EP)
1582 gohci
.regs
= (struct ohci_regs
*)(CONFIG_SYS_PERIPHERAL_BASE
| 0x1000);
1583 #elif defined(CONFIG_440EPX) || defined(CONFIG_SYS_USB_HOST)
1584 gohci
.regs
= (struct ohci_regs
*)(CONFIG_SYS_USB_HOST
);
1588 gohci
.slot_name
= "ppc440";
1590 if (hc_reset (&gohci
) < 0) {
1591 hc_release_ohci (&gohci
);
1595 if (hc_start (&gohci
) < 0) {
1596 err ("can't start usb-%s", gohci
.slot_name
);
1597 hc_release_ohci (&gohci
);
1602 ohci_dump (&gohci
, 1);
1610 int usb_lowlevel_stop(int index
)
1612 /* this gets called really early - before the controller has */
1613 /* even been initialized! */
1616 /* TODO release any interrupts, etc. */
1617 /* call hc_release_ohci() here ? */
1622 #endif /* CONFIG_USB_OHCI */