]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - arch/powerpc/cpu/mpc5xxx/usb_ohci.c
2 * URB OHCI HCD (Host Controller Driver) for USB on the MPC5200.
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
32 #define OHCI_USE_NPS /* force NoPowerSwitching mode */
33 #undef OHCI_VERBOSE_DEBUG /* not always helpful */
36 #undef OHCI_FILL_TRACE
38 /* For initializing controller (mask in an HCFS mode too) */
39 #define OHCI_CONTROL_INIT \
40 (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
42 #define readl(a) (*((volatile u32 *)(a)))
43 #define writel(a, b) (*((volatile u32 *)(b)) = ((volatile u32)a))
45 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
48 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
50 #define dbg(format, arg...) do {} while(0)
52 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
54 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
56 #define info(format, arg...) do {} while(0)
59 #define m16_swap(x) swap_16(x)
60 #define m32_swap(x) swap_32(x)
62 #define ohci_cpu_to_le16(x) (x)
63 #define ohci_cpu_to_le32(x) (x)
67 /* this must be aligned to a 256 byte boundary */
68 struct ohci_hcca ghcca
[1];
69 /* a pointer to the aligned storage */
70 struct ohci_hcca
*phcca
;
71 /* this allocates EDs for all possible endpoints */
72 struct ohci_device ohci_dev
;
77 /* device which was disconnected */
78 struct usb_device
*devgone
;
79 /* flag guarding URB transation */
82 /*-------------------------------------------------------------------------*/
84 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
85 * The erratum (#4) description is incorrect. AMD's workaround waits
86 * till some bits (mostly reserved) are clear; ok for all revs.
88 #define OHCI_QUIRK_AMD756 0xabcd
89 #define read_roothub(hc, register, mask) ({ \
90 u32 temp = readl (&hc->regs->roothub.register); \
91 if (hc->flags & OHCI_QUIRK_AMD756) \
93 temp = readl (&hc->regs->roothub.register); \
96 static u32
roothub_a (struct ohci
*hc
)
97 { return read_roothub (hc
, a
, 0xfc0fe000); }
98 static inline u32
roothub_b (struct ohci
*hc
)
99 { return readl (&hc
->regs
->roothub
.b
); }
100 static inline u32
roothub_status (struct ohci
*hc
)
101 { return readl (&hc
->regs
->roothub
.status
); }
102 static u32
roothub_portstatus (struct ohci
*hc
, int i
)
103 { return read_roothub (hc
, portstatus
[i
], 0xffe0fce0); }
106 /* forward declaration */
107 static int hc_interrupt (void);
109 td_submit_job (struct usb_device
* dev
, unsigned long pipe
, void * buffer
,
110 int transfer_len
, struct devrequest
* setup
, urb_priv_t
* urb
, int interval
);
112 /*-------------------------------------------------------------------------*
113 * URB support functions
114 *-------------------------------------------------------------------------*/
116 /* free HCD-private data associated with this URB */
118 static void urb_free_priv (urb_priv_t
* urb
)
124 last
= urb
->length
- 1;
126 for (i
= 0; i
<= last
; i
++) {
136 /*-------------------------------------------------------------------------*/
139 static int sohci_get_current_frame_number (struct usb_device
* dev
);
141 /* debug| print the main components of an URB
142 * small: 0) header + data packets 1) just header */
144 static void pkt_print (struct usb_device
* dev
, unsigned long pipe
, void * buffer
,
145 int transfer_len
, struct devrequest
* setup
, char * str
, int small
)
147 urb_priv_t
* purb
= &urb_priv
;
149 dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
151 sohci_get_current_frame_number (dev
),
152 usb_pipedevice (pipe
),
153 usb_pipeendpoint (pipe
),
154 usb_pipeout (pipe
)? 'O': 'I',
155 usb_pipetype (pipe
) < 2? (usb_pipeint (pipe
)? "INTR": "ISOC"):
156 (usb_pipecontrol (pipe
)? "CTRL": "BULK"),
158 transfer_len
, dev
->status
);
159 #ifdef OHCI_VERBOSE_DEBUG
163 if (usb_pipecontrol (pipe
)) {
164 printf (__FILE__
": cmd(8):");
165 for (i
= 0; i
< 8 ; i
++)
166 printf (" %02x", ((__u8
*) setup
) [i
]);
169 if (transfer_len
> 0 && buffer
) {
170 printf (__FILE__
": data(%d/%d):",
173 len
= usb_pipeout (pipe
)?
174 transfer_len
: purb
->actual_length
;
175 for (i
= 0; i
< 16 && i
< len
; i
++)
176 printf (" %02x", ((__u8
*) buffer
) [i
]);
177 printf ("%s\n", i
< len
? "...": "");
183 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
184 void ep_print_int_eds (ohci_t
*ohci
, char * str
) {
187 for (i
= 0; i
< 32; i
++) {
189 ed_p
= &(ohci
->hcca
->int_table
[i
]);
192 printf (__FILE__
": %s branch int %2d(%2x):", str
, i
, i
);
193 while (*ed_p
!= 0 && j
--) {
194 ed_t
*ed
= (ed_t
*)ohci_cpu_to_le32(ed_p
);
195 printf (" ed: %4x;", ed
->hwINFO
);
196 ed_p
= &ed
->hwNextED
;
202 static void ohci_dump_intr_mask (char *label
, __u32 mask
)
204 dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
207 (mask
& OHCI_INTR_MIE
) ? " MIE" : "",
208 (mask
& OHCI_INTR_OC
) ? " OC" : "",
209 (mask
& OHCI_INTR_RHSC
) ? " RHSC" : "",
210 (mask
& OHCI_INTR_FNO
) ? " FNO" : "",
211 (mask
& OHCI_INTR_UE
) ? " UE" : "",
212 (mask
& OHCI_INTR_RD
) ? " RD" : "",
213 (mask
& OHCI_INTR_SF
) ? " SF" : "",
214 (mask
& OHCI_INTR_WDH
) ? " WDH" : "",
215 (mask
& OHCI_INTR_SO
) ? " SO" : ""
219 static void maybe_print_eds (char *label
, __u32 value
)
221 ed_t
*edp
= (ed_t
*)value
;
224 dbg ("%s %08x", label
, value
);
225 dbg ("%08x", edp
->hwINFO
);
226 dbg ("%08x", edp
->hwTailP
);
227 dbg ("%08x", edp
->hwHeadP
);
228 dbg ("%08x", edp
->hwNextED
);
232 static char * hcfs2string (int state
)
235 case OHCI_USB_RESET
: return "reset";
236 case OHCI_USB_RESUME
: return "resume";
237 case OHCI_USB_OPER
: return "operational";
238 case OHCI_USB_SUSPEND
: return "suspend";
243 /* dump control and status registers */
244 static void ohci_dump_status (ohci_t
*controller
)
246 struct ohci_regs
*regs
= controller
->regs
;
249 temp
= readl (®s
->revision
) & 0xff;
251 dbg ("spec %d.%d", (temp
>> 4), (temp
& 0x0f));
253 temp
= readl (®s
->control
);
254 dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp
,
255 (temp
& OHCI_CTRL_RWE
) ? " RWE" : "",
256 (temp
& OHCI_CTRL_RWC
) ? " RWC" : "",
257 (temp
& OHCI_CTRL_IR
) ? " IR" : "",
258 hcfs2string (temp
& OHCI_CTRL_HCFS
),
259 (temp
& OHCI_CTRL_BLE
) ? " BLE" : "",
260 (temp
& OHCI_CTRL_CLE
) ? " CLE" : "",
261 (temp
& OHCI_CTRL_IE
) ? " IE" : "",
262 (temp
& OHCI_CTRL_PLE
) ? " PLE" : "",
263 temp
& OHCI_CTRL_CBSR
266 temp
= readl (®s
->cmdstatus
);
267 dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp
,
268 (temp
& OHCI_SOC
) >> 16,
269 (temp
& OHCI_OCR
) ? " OCR" : "",
270 (temp
& OHCI_BLF
) ? " BLF" : "",
271 (temp
& OHCI_CLF
) ? " CLF" : "",
272 (temp
& OHCI_HCR
) ? " HCR" : ""
275 ohci_dump_intr_mask ("intrstatus", readl (®s
->intrstatus
));
276 ohci_dump_intr_mask ("intrenable", readl (®s
->intrenable
));
278 maybe_print_eds ("ed_periodcurrent", readl (®s
->ed_periodcurrent
));
280 maybe_print_eds ("ed_controlhead", readl (®s
->ed_controlhead
));
281 maybe_print_eds ("ed_controlcurrent", readl (®s
->ed_controlcurrent
));
283 maybe_print_eds ("ed_bulkhead", readl (®s
->ed_bulkhead
));
284 maybe_print_eds ("ed_bulkcurrent", readl (®s
->ed_bulkcurrent
));
286 maybe_print_eds ("donehead", readl (®s
->donehead
));
289 static void ohci_dump_roothub (ohci_t
*controller
, int verbose
)
293 temp
= roothub_a (controller
);
294 ndp
= (temp
& RH_A_NDP
);
297 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp
,
298 ((temp
& RH_A_POTPGT
) >> 24) & 0xff,
299 (temp
& RH_A_NOCP
) ? " NOCP" : "",
300 (temp
& RH_A_OCPM
) ? " OCPM" : "",
301 (temp
& RH_A_DT
) ? " DT" : "",
302 (temp
& RH_A_NPS
) ? " NPS" : "",
303 (temp
& RH_A_PSM
) ? " PSM" : "",
306 temp
= roothub_b (controller
);
307 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
309 (temp
& RH_B_PPCM
) >> 16,
312 temp
= roothub_status (controller
);
313 dbg ("roothub.status: %08x%s%s%s%s%s%s",
315 (temp
& RH_HS_CRWE
) ? " CRWE" : "",
316 (temp
& RH_HS_OCIC
) ? " OCIC" : "",
317 (temp
& RH_HS_LPSC
) ? " LPSC" : "",
318 (temp
& RH_HS_DRWE
) ? " DRWE" : "",
319 (temp
& RH_HS_OCI
) ? " OCI" : "",
320 (temp
& RH_HS_LPS
) ? " LPS" : ""
324 for (i
= 0; i
< ndp
; i
++) {
325 temp
= roothub_portstatus (controller
, i
);
326 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
329 (temp
& RH_PS_PRSC
) ? " PRSC" : "",
330 (temp
& RH_PS_OCIC
) ? " OCIC" : "",
331 (temp
& RH_PS_PSSC
) ? " PSSC" : "",
332 (temp
& RH_PS_PESC
) ? " PESC" : "",
333 (temp
& RH_PS_CSC
) ? " CSC" : "",
335 (temp
& RH_PS_LSDA
) ? " LSDA" : "",
336 (temp
& RH_PS_PPS
) ? " PPS" : "",
337 (temp
& RH_PS_PRS
) ? " PRS" : "",
338 (temp
& RH_PS_POCI
) ? " POCI" : "",
339 (temp
& RH_PS_PSS
) ? " PSS" : "",
341 (temp
& RH_PS_PES
) ? " PES" : "",
342 (temp
& RH_PS_CCS
) ? " CCS" : ""
347 static void ohci_dump (ohci_t
*controller
, int verbose
)
349 dbg ("OHCI controller usb-%s state", controller
->slot_name
);
351 /* dumps some of the state we know about */
352 ohci_dump_status (controller
);
354 ep_print_int_eds (controller
, "hcca");
355 dbg ("hcca frame #%04x", controller
->hcca
->frame_no
);
356 ohci_dump_roothub (controller
, 1);
362 /*-------------------------------------------------------------------------*
363 * Interface functions (URB)
364 *-------------------------------------------------------------------------*/
366 /* get a transfer request */
368 int sohci_submit_job(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
369 int transfer_len
, struct devrequest
*setup
, int interval
)
373 urb_priv_t
*purb_priv
;
378 /* when controller's hung, permit only roothub cleanup attempts
379 * such as powering down ports */
380 if (ohci
->disabled
) {
381 err("sohci_submit_job: EPIPE");
385 /* if we have an unfinished URB from previous transaction let's
386 * fail and scream as quickly as possible so as not to corrupt
387 * further communication */
389 err("sohci_submit_job: URB NOT FINISHED");
392 /* we're about to begin a new transaction here so mark the URB unfinished */
395 /* every endpoint has a ed, locate and fill it */
396 if (!(ed
= ep_add_ed (dev
, pipe
))) {
397 err("sohci_submit_job: ENOMEM");
401 /* for the private part of the URB we need the number of TDs (size) */
402 switch (usb_pipetype (pipe
)) {
403 case PIPE_BULK
: /* one TD for every 4096 Byte */
404 size
= (transfer_len
- 1) / 4096 + 1;
406 case PIPE_CONTROL
: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
407 size
= (transfer_len
== 0)? 2:
408 (transfer_len
- 1) / 4096 + 3;
412 if (size
>= (N_URB_TD
- 1)) {
413 err("need %d TDs, only have %d", size
, N_URB_TD
);
416 purb_priv
= &urb_priv
;
417 purb_priv
->pipe
= pipe
;
419 /* fill the private part of the URB */
420 purb_priv
->length
= size
;
422 purb_priv
->actual_length
= 0;
424 /* allocate the TDs */
425 /* note that td[0] was allocated in ep_add_ed */
426 for (i
= 0; i
< size
; i
++) {
427 purb_priv
->td
[i
] = td_alloc (dev
);
428 if (!purb_priv
->td
[i
]) {
429 purb_priv
->length
= i
;
430 urb_free_priv (purb_priv
);
431 err("sohci_submit_job: ENOMEM");
436 if (ed
->state
== ED_NEW
|| (ed
->state
& ED_DEL
)) {
437 urb_free_priv (purb_priv
);
438 err("sohci_submit_job: EINVAL");
442 /* link the ed into a chain if is not already */
443 if (ed
->state
!= ED_OPER
)
446 /* fill the TDs and link it to the ed */
447 td_submit_job(dev
, pipe
, buffer
, transfer_len
, setup
, purb_priv
, interval
);
452 /*-------------------------------------------------------------------------*/
455 /* tell us the current USB frame number */
457 static int sohci_get_current_frame_number (struct usb_device
*usb_dev
)
459 ohci_t
*ohci
= &gohci
;
461 return ohci_cpu_to_le16 (ohci
->hcca
->frame_no
);
465 /*-------------------------------------------------------------------------*
466 * ED handling functions
467 *-------------------------------------------------------------------------*/
469 /* link an ed into one of the HC chains */
471 static int ep_link (ohci_t
*ohci
, ed_t
*edi
)
473 volatile ed_t
*ed
= edi
;
480 if (ohci
->ed_controltail
== NULL
) {
481 writel (ed
, &ohci
->regs
->ed_controlhead
);
483 ohci
->ed_controltail
->hwNextED
= ohci_cpu_to_le32 ((unsigned long)ed
);
485 ed
->ed_prev
= ohci
->ed_controltail
;
486 if (!ohci
->ed_controltail
&& !ohci
->ed_rm_list
[0] &&
487 !ohci
->ed_rm_list
[1] && !ohci
->sleeping
) {
488 ohci
->hc_control
|= OHCI_CTRL_CLE
;
489 writel (ohci
->hc_control
, &ohci
->regs
->control
);
491 ohci
->ed_controltail
= edi
;
496 if (ohci
->ed_bulktail
== NULL
) {
497 writel (ed
, &ohci
->regs
->ed_bulkhead
);
499 ohci
->ed_bulktail
->hwNextED
= ohci_cpu_to_le32 ((unsigned long)ed
);
501 ed
->ed_prev
= ohci
->ed_bulktail
;
502 if (!ohci
->ed_bulktail
&& !ohci
->ed_rm_list
[0] &&
503 !ohci
->ed_rm_list
[1] && !ohci
->sleeping
) {
504 ohci
->hc_control
|= OHCI_CTRL_BLE
;
505 writel (ohci
->hc_control
, &ohci
->regs
->control
);
507 ohci
->ed_bulktail
= edi
;
513 /*-------------------------------------------------------------------------*/
515 /* unlink an ed from one of the HC chains.
516 * just the link to the ed is unlinked.
517 * the link from the ed still points to another operational ed or 0
518 * so the HC can eventually finish the processing of the unlinked ed */
520 static int ep_unlink (ohci_t
*ohci
, ed_t
*edi
)
522 volatile ed_t
*ed
= edi
;
524 ed
->hwINFO
|= ohci_cpu_to_le32 (OHCI_ED_SKIP
);
528 if (ed
->ed_prev
== NULL
) {
530 ohci
->hc_control
&= ~OHCI_CTRL_CLE
;
531 writel (ohci
->hc_control
, &ohci
->regs
->control
);
533 writel (ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)), &ohci
->regs
->ed_controlhead
);
535 ed
->ed_prev
->hwNextED
= ed
->hwNextED
;
537 if (ohci
->ed_controltail
== ed
) {
538 ohci
->ed_controltail
= ed
->ed_prev
;
540 ((ed_t
*)ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)))->ed_prev
= ed
->ed_prev
;
545 if (ed
->ed_prev
== NULL
) {
547 ohci
->hc_control
&= ~OHCI_CTRL_BLE
;
548 writel (ohci
->hc_control
, &ohci
->regs
->control
);
550 writel (ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)), &ohci
->regs
->ed_bulkhead
);
552 ed
->ed_prev
->hwNextED
= ed
->hwNextED
;
554 if (ohci
->ed_bulktail
== ed
) {
555 ohci
->ed_bulktail
= ed
->ed_prev
;
557 ((ed_t
*)ohci_cpu_to_le32 (*((__u32
*)&ed
->hwNextED
)))->ed_prev
= ed
->ed_prev
;
561 ed
->state
= ED_UNLINK
;
566 /*-------------------------------------------------------------------------*/
568 /* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
569 * but the USB stack is a little bit stateless so we do it at every transaction
570 * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
571 * in all other cases the state is left unchanged
572 * the ed info fields are setted anyway even though most of them should not change */
574 static ed_t
* ep_add_ed (struct usb_device
*usb_dev
, unsigned long pipe
)
580 ed
= ed_ret
= &ohci_dev
.ed
[(usb_pipeendpoint (pipe
) << 1) |
581 (usb_pipecontrol (pipe
)? 0: usb_pipeout (pipe
))];
583 if ((ed
->state
& ED_DEL
) || (ed
->state
& ED_URB_DEL
)) {
584 err("ep_add_ed: pending delete");
585 /* pending delete request */
589 if (ed
->state
== ED_NEW
) {
590 ed
->hwINFO
= ohci_cpu_to_le32 (OHCI_ED_SKIP
); /* skip ed */
591 /* dummy td; end of td list for ed */
592 td
= td_alloc (usb_dev
);
593 ed
->hwTailP
= ohci_cpu_to_le32 ((unsigned long)td
);
594 ed
->hwHeadP
= ed
->hwTailP
;
595 ed
->state
= ED_UNLINK
;
596 ed
->type
= usb_pipetype (pipe
);
600 ed
->hwINFO
= ohci_cpu_to_le32 (usb_pipedevice (pipe
)
601 | usb_pipeendpoint (pipe
) << 7
602 | (usb_pipeisoc (pipe
)? 0x8000: 0)
603 | (usb_pipecontrol (pipe
)? 0: (usb_pipeout (pipe
)? 0x800: 0x1000))
604 | (usb_dev
->speed
== USB_SPEED_LOW
) << 13
605 | usb_maxpacket (usb_dev
, pipe
) << 16);
610 /*-------------------------------------------------------------------------*
611 * TD handling functions
612 *-------------------------------------------------------------------------*/
614 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
616 static void td_fill (ohci_t
*ohci
, unsigned int info
,
618 struct usb_device
*dev
, int index
, urb_priv_t
*urb_priv
)
620 volatile td_t
*td
, *td_pt
;
621 #ifdef OHCI_FILL_TRACE
625 if (index
> urb_priv
->length
) {
626 err("index > length");
629 /* use this td as the next dummy */
630 td_pt
= urb_priv
->td
[index
];
633 /* fill the old dummy TD */
634 td
= urb_priv
->td
[index
] = (td_t
*)(ohci_cpu_to_le32 (urb_priv
->ed
->hwTailP
) & ~0xf);
636 td
->ed
= urb_priv
->ed
;
637 td
->next_dl_td
= NULL
;
639 td
->data
= (__u32
)data
;
640 #ifdef OHCI_FILL_TRACE
641 if (usb_pipebulk(urb_priv
->pipe
) && usb_pipeout(urb_priv
->pipe
)) {
642 for (i
= 0; i
< len
; i
++)
643 printf("td->data[%d] %#2x ",i
, ((unsigned char *)td
->data
)[i
]);
650 td
->hwINFO
= ohci_cpu_to_le32 (info
);
651 td
->hwCBP
= ohci_cpu_to_le32 ((unsigned long)data
);
653 td
->hwBE
= ohci_cpu_to_le32 ((unsigned long)(data
+ len
- 1));
656 td
->hwNextTD
= ohci_cpu_to_le32 ((unsigned long)td_pt
);
658 /* append to queue */
659 td
->ed
->hwTailP
= td
->hwNextTD
;
662 /*-------------------------------------------------------------------------*/
664 /* prepare all TDs of a transfer */
665 static void td_submit_job (struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
666 int transfer_len
, struct devrequest
*setup
, urb_priv_t
*urb
, int interval
)
668 ohci_t
*ohci
= &gohci
;
669 int data_len
= transfer_len
;
673 unsigned int toggle
= 0;
675 /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
676 if(usb_gettoggle(dev
, usb_pipeendpoint(pipe
), usb_pipeout(pipe
))) {
677 toggle
= TD_T_TOGGLE
;
680 usb_settoggle(dev
, usb_pipeendpoint(pipe
), usb_pipeout(pipe
), 1);
688 switch (usb_pipetype (pipe
)) {
690 info
= usb_pipeout (pipe
)?
691 TD_CC
| TD_DP_OUT
: TD_CC
| TD_DP_IN
;
692 while(data_len
> 4096) {
693 td_fill (ohci
, info
| (cnt
? TD_T_TOGGLE
:toggle
), data
, 4096, dev
, cnt
, urb
);
694 data
+= 4096; data_len
-= 4096; cnt
++;
696 info
= usb_pipeout (pipe
)?
697 TD_CC
| TD_DP_OUT
: TD_CC
| TD_R
| TD_DP_IN
;
698 td_fill (ohci
, info
| (cnt
? TD_T_TOGGLE
:toggle
), data
, data_len
, dev
, cnt
, urb
);
702 writel (OHCI_BLF
, &ohci
->regs
->cmdstatus
); /* start bulk list */
706 info
= TD_CC
| TD_DP_SETUP
| TD_T_DATA0
;
707 td_fill (ohci
, info
, setup
, 8, dev
, cnt
++, urb
);
709 info
= usb_pipeout (pipe
)?
710 TD_CC
| TD_R
| TD_DP_OUT
| TD_T_DATA1
: TD_CC
| TD_R
| TD_DP_IN
| TD_T_DATA1
;
711 /* NOTE: mishandles transfers >8K, some >4K */
712 td_fill (ohci
, info
, data
, data_len
, dev
, cnt
++, urb
);
714 info
= usb_pipeout (pipe
)?
715 TD_CC
| TD_DP_IN
| TD_T_DATA1
: TD_CC
| TD_DP_OUT
| TD_T_DATA1
;
716 td_fill (ohci
, info
, data
, 0, dev
, cnt
++, urb
);
718 writel (OHCI_CLF
, &ohci
->regs
->cmdstatus
); /* start Control list */
721 if (urb
->length
!= cnt
)
722 dbg("TD LENGTH %d != CNT %d", urb
->length
, cnt
);
725 /*-------------------------------------------------------------------------*
726 * Done List handling functions
727 *-------------------------------------------------------------------------*/
730 /* calculate the transfer length and update the urb */
732 static void dl_transfer_length(td_t
* td
)
735 urb_priv_t
*lurb_priv
= &urb_priv
;
737 tdBE
= ohci_cpu_to_le32 (td
->hwBE
);
738 tdCBP
= ohci_cpu_to_le32 (td
->hwCBP
);
741 if (!(usb_pipecontrol(lurb_priv
->pipe
) &&
742 ((td
->index
== 0) || (td
->index
== lurb_priv
->length
- 1)))) {
745 lurb_priv
->actual_length
+= tdBE
- td
->data
+ 1;
747 lurb_priv
->actual_length
+= tdCBP
- td
->data
;
752 /*-------------------------------------------------------------------------*/
754 /* replies to the request have to be on a FIFO basis so
755 * we reverse the reversed done-list */
757 static td_t
* dl_reverse_done_list (ohci_t
*ohci
)
761 td_t
*td_list
= NULL
;
762 urb_priv_t
*lurb_priv
= NULL
;
764 td_list_hc
= ohci_cpu_to_le32 (ohci
->hcca
->done_head
) & 0xfffffff0;
765 ohci
->hcca
->done_head
= 0;
768 td_list
= (td_t
*)td_list_hc
;
770 if (TD_CC_GET (ohci_cpu_to_le32 (td_list
->hwINFO
))) {
771 lurb_priv
= &urb_priv
;
772 dbg(" USB-error/status: %x : %p",
773 TD_CC_GET (ohci_cpu_to_le32 (td_list
->hwINFO
)), td_list
);
774 if (td_list
->ed
->hwHeadP
& ohci_cpu_to_le32 (0x1)) {
775 if (lurb_priv
&& ((td_list
->index
+ 1) < lurb_priv
->length
)) {
776 td_list
->ed
->hwHeadP
=
777 (lurb_priv
->td
[lurb_priv
->length
- 1]->hwNextTD
& ohci_cpu_to_le32 (0xfffffff0)) |
778 (td_list
->ed
->hwHeadP
& ohci_cpu_to_le32 (0x2));
779 lurb_priv
->td_cnt
+= lurb_priv
->length
- td_list
->index
- 1;
781 td_list
->ed
->hwHeadP
&= ohci_cpu_to_le32 (0xfffffff2);
783 td_list
->hwNextTD
= 0;
786 td_list
->next_dl_td
= td_rev
;
788 td_list_hc
= ohci_cpu_to_le32 (td_list
->hwNextTD
) & 0xfffffff0;
793 /*-------------------------------------------------------------------------*/
796 static int dl_done_list (ohci_t
*ohci
, td_t
*td_list
)
798 td_t
*td_list_next
= NULL
;
803 urb_priv_t
*lurb_priv
;
804 __u32 tdINFO
, edHeadP
, edTailP
;
807 td_list_next
= td_list
->next_dl_td
;
809 lurb_priv
= &urb_priv
;
810 tdINFO
= ohci_cpu_to_le32 (td_list
->hwINFO
);
814 dl_transfer_length(td_list
);
816 /* error code of transfer */
817 cc
= TD_CC_GET (tdINFO
);
818 if (++(lurb_priv
->td_cnt
) == lurb_priv
->length
) {
819 if ((ed
->state
& (ED_OPER
| ED_UNLINK
))
820 && (lurb_priv
->state
!= URB_DEL
)) {
821 dbg("ConditionCode %#x", cc
);
822 stat
= cc_to_error
[cc
];
827 if (ed
->state
!= ED_NEW
) {
828 edHeadP
= ohci_cpu_to_le32 (ed
->hwHeadP
) & 0xfffffff0;
829 edTailP
= ohci_cpu_to_le32 (ed
->hwTailP
);
831 /* unlink eds if they are not busy */
832 if ((edHeadP
== edTailP
) && (ed
->state
== ED_OPER
))
833 ep_unlink (ohci
, ed
);
836 td_list
= td_list_next
;
841 /*-------------------------------------------------------------------------*
843 *-------------------------------------------------------------------------*/
845 /* Device descriptor */
846 static __u8 root_hub_dev_des
[] =
848 0x12, /* __u8 bLength; */
849 0x01, /* __u8 bDescriptorType; Device */
850 0x10, /* __u16 bcdUSB; v1.1 */
852 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
853 0x00, /* __u8 bDeviceSubClass; */
854 0x00, /* __u8 bDeviceProtocol; */
855 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
856 0x00, /* __u16 idVendor; */
858 0x00, /* __u16 idProduct; */
860 0x00, /* __u16 bcdDevice; */
862 0x00, /* __u8 iManufacturer; */
863 0x01, /* __u8 iProduct; */
864 0x00, /* __u8 iSerialNumber; */
865 0x01 /* __u8 bNumConfigurations; */
869 /* Configuration descriptor */
870 static __u8 root_hub_config_des
[] =
872 0x09, /* __u8 bLength; */
873 0x02, /* __u8 bDescriptorType; Configuration */
874 0x19, /* __u16 wTotalLength; */
876 0x01, /* __u8 bNumInterfaces; */
877 0x01, /* __u8 bConfigurationValue; */
878 0x00, /* __u8 iConfiguration; */
879 0x40, /* __u8 bmAttributes;
880 Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
881 0x00, /* __u8 MaxPower; */
884 0x09, /* __u8 if_bLength; */
885 0x04, /* __u8 if_bDescriptorType; Interface */
886 0x00, /* __u8 if_bInterfaceNumber; */
887 0x00, /* __u8 if_bAlternateSetting; */
888 0x01, /* __u8 if_bNumEndpoints; */
889 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
890 0x00, /* __u8 if_bInterfaceSubClass; */
891 0x00, /* __u8 if_bInterfaceProtocol; */
892 0x00, /* __u8 if_iInterface; */
895 0x07, /* __u8 ep_bLength; */
896 0x05, /* __u8 ep_bDescriptorType; Endpoint */
897 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
898 0x03, /* __u8 ep_bmAttributes; Interrupt */
899 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
901 0xff /* __u8 ep_bInterval; 255 ms */
904 static unsigned char root_hub_str_index0
[] =
906 0x04, /* __u8 bLength; */
907 0x03, /* __u8 bDescriptorType; String-descriptor */
908 0x09, /* __u8 lang ID */
909 0x04, /* __u8 lang ID */
912 static unsigned char root_hub_str_index1
[] =
914 28, /* __u8 bLength; */
915 0x03, /* __u8 bDescriptorType; String-descriptor */
916 'O', /* __u8 Unicode */
917 0, /* __u8 Unicode */
918 'H', /* __u8 Unicode */
919 0, /* __u8 Unicode */
920 'C', /* __u8 Unicode */
921 0, /* __u8 Unicode */
922 'I', /* __u8 Unicode */
923 0, /* __u8 Unicode */
924 ' ', /* __u8 Unicode */
925 0, /* __u8 Unicode */
926 'R', /* __u8 Unicode */
927 0, /* __u8 Unicode */
928 'o', /* __u8 Unicode */
929 0, /* __u8 Unicode */
930 'o', /* __u8 Unicode */
931 0, /* __u8 Unicode */
932 't', /* __u8 Unicode */
933 0, /* __u8 Unicode */
934 ' ', /* __u8 Unicode */
935 0, /* __u8 Unicode */
936 'H', /* __u8 Unicode */
937 0, /* __u8 Unicode */
938 'u', /* __u8 Unicode */
939 0, /* __u8 Unicode */
940 'b', /* __u8 Unicode */
941 0, /* __u8 Unicode */
944 /* Hub class-specific descriptor is constructed dynamically */
947 /*-------------------------------------------------------------------------*/
949 #define OK(x) len = (x); break
951 #define WR_RH_STAT(x) {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
952 #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
954 #define WR_RH_STAT(x) writel((x), &gohci.regs->roothub.status)
955 #define WR_RH_PORTSTAT(x) writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
957 #define RD_RH_STAT roothub_status(&gohci)
958 #define RD_RH_PORTSTAT roothub_portstatus(&gohci,wIndex-1)
960 /* request to virtual root hub */
962 int rh_check_port_status(ohci_t
*controller
)
968 temp
= roothub_a (controller
);
969 ndp
= (temp
& RH_A_NDP
);
970 for (i
= 0; i
< ndp
; i
++) {
971 temp
= roothub_portstatus (controller
, i
);
972 /* check for a device disconnect */
973 if (((temp
& (RH_PS_PESC
| RH_PS_CSC
)) ==
974 (RH_PS_PESC
| RH_PS_CSC
)) &&
975 ((temp
& RH_PS_CCS
) == 0)) {
983 static int ohci_submit_rh_msg(struct usb_device
*dev
, unsigned long pipe
,
984 void *buffer
, int transfer_len
, struct devrequest
*cmd
)
986 void * data
= buffer
;
987 int leni
= transfer_len
;
991 __u8
*data_buf
= (__u8
*)datab
;
998 urb_priv
.actual_length
= 0;
999 pkt_print(dev
, pipe
, buffer
, transfer_len
, cmd
, "SUB(rh)", usb_pipein(pipe
));
1001 if (usb_pipeint(pipe
)) {
1002 info("Root-Hub submit IRQ: NOT implemented");
1006 bmRType_bReq
= cmd
->requesttype
| (cmd
->request
<< 8);
1007 wValue
= m16_swap (cmd
->value
);
1008 wIndex
= m16_swap (cmd
->index
);
1009 wLength
= m16_swap (cmd
->length
);
1011 info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1012 dev
->devnum
, 8, bmRType_bReq
, wValue
, wIndex
, wLength
);
1014 switch (bmRType_bReq
) {
1015 /* Request Destination:
1016 without flags: Device,
1017 RH_INTERFACE: interface,
1018 RH_ENDPOINT: endpoint,
1019 RH_CLASS means HUB here,
1020 RH_OTHER | RH_CLASS almost ever means HUB_PORT here
1024 *(__u16
*) data_buf
= m16_swap (1); OK (2);
1025 case RH_GET_STATUS
| RH_INTERFACE
:
1026 *(__u16
*) data_buf
= m16_swap (0); OK (2);
1027 case RH_GET_STATUS
| RH_ENDPOINT
:
1028 *(__u16
*) data_buf
= m16_swap (0); OK (2);
1029 case RH_GET_STATUS
| RH_CLASS
:
1030 *(__u32
*) data_buf
= m32_swap (
1031 RD_RH_STAT
& ~(RH_HS_CRWE
| RH_HS_DRWE
));
1033 case RH_GET_STATUS
| RH_OTHER
| RH_CLASS
:
1034 *(__u32
*) data_buf
= m32_swap (RD_RH_PORTSTAT
); OK (4);
1036 case RH_CLEAR_FEATURE
| RH_ENDPOINT
:
1038 case (RH_ENDPOINT_STALL
): OK (0);
1042 case RH_CLEAR_FEATURE
| RH_CLASS
:
1044 case RH_C_HUB_LOCAL_POWER
:
1046 case (RH_C_HUB_OVER_CURRENT
):
1047 WR_RH_STAT(RH_HS_OCIC
); OK (0);
1051 case RH_CLEAR_FEATURE
| RH_OTHER
| RH_CLASS
:
1053 case (RH_PORT_ENABLE
):
1054 WR_RH_PORTSTAT (RH_PS_CCS
); OK (0);
1055 case (RH_PORT_SUSPEND
):
1056 WR_RH_PORTSTAT (RH_PS_POCI
); OK (0);
1057 case (RH_PORT_POWER
):
1058 WR_RH_PORTSTAT (RH_PS_LSDA
); OK (0);
1059 case (RH_C_PORT_CONNECTION
):
1060 WR_RH_PORTSTAT (RH_PS_CSC
); OK (0);
1061 case (RH_C_PORT_ENABLE
):
1062 WR_RH_PORTSTAT (RH_PS_PESC
); OK (0);
1063 case (RH_C_PORT_SUSPEND
):
1064 WR_RH_PORTSTAT (RH_PS_PSSC
); OK (0);
1065 case (RH_C_PORT_OVER_CURRENT
):
1066 WR_RH_PORTSTAT (RH_PS_OCIC
); OK (0);
1067 case (RH_C_PORT_RESET
):
1068 WR_RH_PORTSTAT (RH_PS_PRSC
); OK (0);
1072 case RH_SET_FEATURE
| RH_OTHER
| RH_CLASS
:
1074 case (RH_PORT_SUSPEND
):
1075 WR_RH_PORTSTAT (RH_PS_PSS
); OK (0);
1076 case (RH_PORT_RESET
): /* BUG IN HUP CODE *********/
1077 if (RD_RH_PORTSTAT
& RH_PS_CCS
)
1078 WR_RH_PORTSTAT (RH_PS_PRS
);
1080 case (RH_PORT_POWER
):
1081 WR_RH_PORTSTAT (RH_PS_PPS
); OK (0);
1082 case (RH_PORT_ENABLE
): /* BUG IN HUP CODE *********/
1083 if (RD_RH_PORTSTAT
& RH_PS_CCS
)
1084 WR_RH_PORTSTAT (RH_PS_PES
);
1089 case RH_SET_ADDRESS
: gohci
.rh
.devnum
= wValue
; OK(0);
1091 case RH_GET_DESCRIPTOR
:
1092 switch ((wValue
& 0xff00) >> 8) {
1093 case (0x01): /* device descriptor */
1094 len
= min_t(unsigned int,
1097 sizeof (root_hub_dev_des
),
1099 data_buf
= root_hub_dev_des
; OK(len
);
1100 case (0x02): /* configuration descriptor */
1101 len
= min_t(unsigned int,
1104 sizeof (root_hub_config_des
),
1106 data_buf
= root_hub_config_des
; OK(len
);
1107 case (0x03): /* string descriptors */
1108 if(wValue
==0x0300) {
1109 len
= min_t(unsigned int,
1112 sizeof (root_hub_str_index0
),
1114 data_buf
= root_hub_str_index0
;
1117 if(wValue
==0x0301) {
1118 len
= min_t(unsigned int,
1121 sizeof (root_hub_str_index1
),
1123 data_buf
= root_hub_str_index1
;
1127 stat
= USB_ST_STALLED
;
1131 case RH_GET_DESCRIPTOR
| RH_CLASS
:
1133 __u32 temp
= roothub_a (&gohci
);
1135 data_buf
[0] = 9; /* min length; */
1136 data_buf
[1] = 0x29;
1137 data_buf
[2] = temp
& RH_A_NDP
;
1139 if (temp
& RH_A_PSM
) /* per-port power switching? */
1140 data_buf
[3] |= 0x1;
1141 if (temp
& RH_A_NOCP
) /* no overcurrent reporting? */
1142 data_buf
[3] |= 0x10;
1143 else if (temp
& RH_A_OCPM
) /* per-port overcurrent reporting? */
1144 data_buf
[3] |= 0x8;
1146 /* corresponds to data_buf[4-7] */
1148 data_buf
[5] = (temp
& RH_A_POTPGT
) >> 24;
1149 temp
= roothub_b (&gohci
);
1150 data_buf
[7] = temp
& RH_B_DR
;
1151 if (data_buf
[2] < 7) {
1152 data_buf
[8] = 0xff;
1155 data_buf
[8] = (temp
& RH_B_DR
) >> 8;
1156 data_buf
[10] = data_buf
[9] = 0xff;
1159 len
= min_t(unsigned int, leni
,
1160 min_t(unsigned int, data_buf
[0], wLength
));
1164 case RH_GET_CONFIGURATION
: *(__u8
*) data_buf
= 0x01; OK (1);
1166 case RH_SET_CONFIGURATION
: WR_RH_STAT (0x10000); OK (0);
1169 dbg ("unsupported root hub command");
1170 stat
= USB_ST_STALLED
;
1174 ohci_dump_roothub (&gohci
, 1);
1177 len
= min_t(int, len
, leni
);
1178 if (data
!= data_buf
)
1179 memcpy (data
, data_buf
, len
);
1185 urb_priv
.actual_length
= transfer_len
;
1186 pkt_print(dev
, pipe
, buffer
, transfer_len
, cmd
, "RET(rh)", 0/*usb_pipein(pipe)*/);
1192 /*-------------------------------------------------------------------------*/
1194 /* common code for handling submit messages - used for all but root hub */
1196 int submit_common_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1197 int transfer_len
, struct devrequest
*setup
, int interval
)
1200 int maxsize
= usb_maxpacket(dev
, pipe
);
1203 /* device pulled? Shortcut the action. */
1204 if (devgone
== dev
) {
1205 dev
->status
= USB_ST_CRC_ERR
;
1210 urb_priv
.actual_length
= 0;
1211 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "SUB", usb_pipein(pipe
));
1214 err("submit_common_message: pipesize for pipe %lx is zero",
1219 if (sohci_submit_job(dev
, pipe
, buffer
, transfer_len
, setup
, interval
) < 0) {
1220 err("sohci_submit_job failed");
1224 /* allow more time for a BULK device to react - some are slow */
1225 #define BULK_TO 5000 /* timeout in milliseconds */
1226 if (usb_pipebulk(pipe
))
1231 /* wait for it to complete */
1233 /* check whether the controller is done */
1234 stat
= hc_interrupt();
1236 stat
= USB_ST_CRC_ERR
;
1240 /* NOTE: since we are not interrupt driven in U-Boot and always
1241 * handle only one URB at a time, we cannot assume the
1242 * transaction finished on the first successful return from
1243 * hc_interrupt().. unless the flag for current URB is set,
1244 * meaning that all TD's to/from device got actually
1245 * transferred and processed. If the current URB is not
1246 * finished we need to re-iterate this loop so as
1247 * hc_interrupt() gets called again as there needs to be some
1248 * more TD's to process still */
1249 if ((stat
>= 0) && (stat
!= 0xff) && (urb_finished
)) {
1250 /* 0xff is returned for an SF-interrupt */
1260 err("CTL:TIMEOUT ");
1261 dbg("submit_common_msg: TO status %x\n", stat
);
1262 stat
= USB_ST_CRC_ERR
;
1268 /* we got an Root Hub Status Change interrupt */
1271 ohci_dump_roothub (&gohci
, 1);
1275 timeout
= rh_check_port_status(&gohci
);
1277 #if 0 /* this does nothing useful, but leave it here in case that changes */
1278 /* the called routine adds 1 to the passed value */
1279 usb_hub_port_connect_change(gohci
.rh
.dev
, timeout
- 1);
1283 * This is potentially dangerous because it assumes
1284 * that only one device is ever plugged in!
1292 dev
->act_len
= transfer_len
;
1295 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "RET(ctlr)", usb_pipein(pipe
));
1298 /* free TDs in urb_priv */
1299 urb_free_priv (&urb_priv
);
1303 /* submit routines called from usb.c */
1304 int submit_bulk_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1307 info("submit_bulk_msg");
1308 return submit_common_msg(dev
, pipe
, buffer
, transfer_len
, NULL
, 0);
1311 int submit_control_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1312 int transfer_len
, struct devrequest
*setup
)
1314 int maxsize
= usb_maxpacket(dev
, pipe
);
1316 info("submit_control_msg");
1318 urb_priv
.actual_length
= 0;
1319 pkt_print(dev
, pipe
, buffer
, transfer_len
, setup
, "SUB", usb_pipein(pipe
));
1322 err("submit_control_message: pipesize for pipe %lx is zero",
1326 if (((pipe
>> 8) & 0x7f) == gohci
.rh
.devnum
) {
1328 /* root hub - redirect */
1329 return ohci_submit_rh_msg(dev
, pipe
, buffer
, transfer_len
,
1333 return submit_common_msg(dev
, pipe
, buffer
, transfer_len
, setup
, 0);
1336 int submit_int_msg(struct usb_device
*dev
, unsigned long pipe
, void *buffer
,
1337 int transfer_len
, int interval
)
1339 info("submit_int_msg");
1343 /*-------------------------------------------------------------------------*
1345 *-------------------------------------------------------------------------*/
1347 /* reset the HC and BUS */
1349 static int hc_reset (ohci_t
*ohci
)
1352 int smm_timeout
= 50; /* 0,5 sec */
1354 if (readl (&ohci
->regs
->control
) & OHCI_CTRL_IR
) { /* SMM owns the HC */
1355 writel (OHCI_OCR
, &ohci
->regs
->cmdstatus
); /* request ownership */
1356 info("USB HC TakeOver from SMM");
1357 while (readl (&ohci
->regs
->control
) & OHCI_CTRL_IR
) {
1359 if (--smm_timeout
== 0) {
1360 err("USB HC TakeOver failed!");
1366 /* Disable HC interrupts */
1367 writel (OHCI_INTR_MIE
, &ohci
->regs
->intrdisable
);
1369 dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;",
1371 readl (&ohci
->regs
->control
));
1373 /* Reset USB (needed by some controllers) */
1374 ohci
->hc_control
= 0;
1375 writel (ohci
->hc_control
, &ohci
->regs
->control
);
1377 /* HC Reset requires max 10 us delay */
1378 writel (OHCI_HCR
, &ohci
->regs
->cmdstatus
);
1379 while ((readl (&ohci
->regs
->cmdstatus
) & OHCI_HCR
) != 0) {
1380 if (--timeout
== 0) {
1381 err("USB HC reset timed out!");
1389 /*-------------------------------------------------------------------------*/
1391 /* Start an OHCI controller, set the BUS operational
1393 * connect the virtual root hub */
1395 static int hc_start (ohci_t
* ohci
)
1398 unsigned int fminterval
;
1402 /* Tell the controller where the control and bulk lists are
1403 * The lists are empty now. */
1405 writel (0, &ohci
->regs
->ed_controlhead
);
1406 writel (0, &ohci
->regs
->ed_bulkhead
);
1408 writel ((__u32
)ohci
->hcca
, &ohci
->regs
->hcca
); /* a reset clears this */
1410 fminterval
= 0x2edf;
1411 writel ((fminterval
* 9) / 10, &ohci
->regs
->periodicstart
);
1412 fminterval
|= ((((fminterval
- 210) * 6) / 7) << 16);
1413 writel (fminterval
, &ohci
->regs
->fminterval
);
1414 writel (0x628, &ohci
->regs
->lsthresh
);
1416 /* start controller operations */
1417 ohci
->hc_control
= OHCI_CONTROL_INIT
| OHCI_USB_OPER
;
1419 writel (ohci
->hc_control
, &ohci
->regs
->control
);
1421 /* disable all interrupts */
1422 mask
= (OHCI_INTR_SO
| OHCI_INTR_WDH
| OHCI_INTR_SF
| OHCI_INTR_RD
|
1423 OHCI_INTR_UE
| OHCI_INTR_FNO
| OHCI_INTR_RHSC
|
1424 OHCI_INTR_OC
| OHCI_INTR_MIE
);
1425 writel (mask
, &ohci
->regs
->intrdisable
);
1426 /* clear all interrupts */
1427 mask
&= ~OHCI_INTR_MIE
;
1428 writel (mask
, &ohci
->regs
->intrstatus
);
1429 /* Choose the interrupts we care about now - but w/o MIE */
1430 mask
= OHCI_INTR_RHSC
| OHCI_INTR_UE
| OHCI_INTR_WDH
| OHCI_INTR_SO
;
1431 writel (mask
, &ohci
->regs
->intrenable
);
1434 /* required for AMD-756 and some Mac platforms */
1435 writel ((roothub_a (ohci
) | RH_A_NPS
) & ~RH_A_PSM
,
1436 &ohci
->regs
->roothub
.a
);
1437 writel (RH_HS_LPSC
, &ohci
->regs
->roothub
.status
);
1438 #endif /* OHCI_USE_NPS */
1440 /* POTPGT delay is bits 24-31, in 2 ms units. */
1441 mdelay ((roothub_a (ohci
) >> 23) & 0x1fe);
1443 /* connect the virtual root hub */
1444 ohci
->rh
.devnum
= 0;
1449 /*-------------------------------------------------------------------------*/
1451 /* an interrupt happens */
1456 ohci_t
*ohci
= &gohci
;
1457 struct ohci_regs
*regs
= ohci
->regs
;
1461 if ((ohci
->hcca
->done_head
!= 0) &&
1462 !(ohci_cpu_to_le32(ohci
->hcca
->done_head
) & 0x01)) {
1464 ints
= OHCI_INTR_WDH
;
1466 } else if ((ints
= readl (®s
->intrstatus
)) == ~(u32
)0) {
1468 err ("%s device removed!", ohci
->slot_name
);
1471 } else if ((ints
&= readl (®s
->intrenable
)) == 0) {
1472 dbg("hc_interrupt: returning..\n");
1476 /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1478 if (ints
& OHCI_INTR_RHSC
) {
1483 if (ints
& OHCI_INTR_UE
) {
1485 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1487 /* e.g. due to PCI Master/Target Abort */
1490 ohci_dump (ohci
, 1);
1492 /* FIXME: be optimistic, hope that bug won't repeat often. */
1493 /* Make some non-interrupt context restart the controller. */
1494 /* Count and limit the retries though; either hardware or */
1495 /* software errors can go forever... */
1500 if (ints
& OHCI_INTR_WDH
) {
1501 writel (OHCI_INTR_WDH
, ®s
->intrdisable
);
1502 stat
= dl_done_list (&gohci
, dl_reverse_done_list (&gohci
));
1503 writel (OHCI_INTR_WDH
, ®s
->intrenable
);
1506 if (ints
& OHCI_INTR_SO
) {
1507 dbg("USB Schedule overrun\n");
1508 writel (OHCI_INTR_SO
, ®s
->intrenable
);
1512 /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */
1513 if (ints
& OHCI_INTR_SF
) {
1514 unsigned int frame
= ohci_cpu_to_le16 (ohci
->hcca
->frame_no
) & 1;
1516 writel (OHCI_INTR_SF
, ®s
->intrdisable
);
1517 if (ohci
->ed_rm_list
[frame
] != NULL
)
1518 writel (OHCI_INTR_SF
, ®s
->intrenable
);
1522 writel (ints
, ®s
->intrstatus
);
1526 /*-------------------------------------------------------------------------*/
1528 /*-------------------------------------------------------------------------*/
1530 /* De-allocate all resources.. */
1532 static void hc_release_ohci (ohci_t
*ohci
)
1534 dbg ("USB HC release ohci usb-%s", ohci
->slot_name
);
1536 if (!ohci
->disabled
)
1540 /*-------------------------------------------------------------------------*/
1543 * low level initalisation routine, called from usb.c
1545 static char ohci_inited
= 0;
1547 int usb_lowlevel_init(int index
, void **controller
)
1550 /* Set the USB Clock */
1551 *(vu_long
*)MPC5XXX_CDM_48_FDC
= CONFIG_USB_CLOCK
;
1553 #ifdef CONFIG_PSC3_USB /* USB is using the alternate configuration */
1554 /* remove all PSC3 USB bits first before ORing in ours */
1555 *(vu_long
*)MPC5XXX_GPS_PORT_CONFIG
&= ~0x00804f00;
1557 /* remove all USB bits first before ORing in ours */
1558 *(vu_long
*)MPC5XXX_GPS_PORT_CONFIG
&= ~0x00807000;
1560 /* Activate USB port */
1561 *(vu_long
*)MPC5XXX_GPS_PORT_CONFIG
|= CONFIG_USB_CONFIG
;
1563 memset (&gohci
, 0, sizeof (ohci_t
));
1564 memset (&urb_priv
, 0, sizeof (urb_priv_t
));
1566 /* align the storage */
1567 if ((__u32
)&ghcca
[0] & 0xff) {
1568 err("HCCA not aligned!!");
1572 info("aligned ghcca %p", phcca
);
1573 memset(&ohci_dev
, 0, sizeof(struct ohci_device
));
1574 if ((__u32
)&ohci_dev
.ed
[0] & 0x7) {
1575 err("EDs not aligned!!");
1578 memset(gtd
, 0, sizeof(td_t
) * (NUM_TD
+ 1));
1579 if ((__u32
)gtd
& 0x7) {
1580 err("TDs not aligned!!");
1585 memset (phcca
, 0, sizeof (struct ohci_hcca
));
1590 gohci
.regs
= (struct ohci_regs
*)MPC5XXX_USB
;
1593 gohci
.slot_name
= "mpc5200";
1595 if (hc_reset (&gohci
) < 0) {
1596 hc_release_ohci (&gohci
);
1600 if (hc_start (&gohci
) < 0) {
1601 err ("can't start usb-%s", gohci
.slot_name
);
1602 hc_release_ohci (&gohci
);
1607 ohci_dump (&gohci
, 1);
1615 int usb_lowlevel_stop(int index
)
1617 /* this gets called really early - before the controller has */
1618 /* even been initialized! */
1621 /* TODO release any interrupts, etc. */
1622 /* call hc_release_ohci() here ? */
1627 #endif /* CONFIG_USB_OHCI */