2 * URB OHCI HCD (Host Controller Driver) for USB on the AT91RM9200.
5 * Gary Jennejohn, DENX Software Engineering <gj@denx.de>
7 * Note: Much of this code has been derived from Linux 2.4
8 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
9 * (C) Copyright 2000-2002 David Brownell
11 * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
12 * ebenard@eukrea.com - based on s3c24x0's driver
14 * See file CREDITS for list of people who contributed to this
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
35 * 1 - you MUST define LITTLEENDIAN in the configuration file for the
36 * board or this driver will NOT work!
37 * 2 - this driver is intended for use with USB Mass Storage Devices
38 * (BBB) ONLY. There is NO support for Interrupt or Isochronous pipes!
39 * 3 - when running on a PQFP208 AT91RM9200, define CONFIG_AT91C_PQFP_UHPBUG
40 * to activate workaround for bug #41 or this driver will NOT work!
44 /* #include <pci.h> no PCI on the S3C24X0 */
46 #ifdef CONFIG_USB_OHCI
48 #include <asm/arch/hardware.h>
55 # define OHCI_USE_NPS /* force NoPowerSwitching mode */
58 #undef OHCI_VERBOSE_DEBUG /* not always helpful */
60 /* For initializing controller (mask in an HCFS mode too) */
61 #define OHCI_CONTROL_INIT \
62 (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
64 #define readl(a) (*((vu_long *)(a)))
65 #define writel(a, b) (*((vu_long *)(b)) = ((vu_long)a))
67 #define min_t(type,x,y) ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
71 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
73 #define dbg(format, arg...) do {} while(0)
75 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
78 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
80 #define info(format, arg...) do {} while(0)
83 #define m16_swap(x) swap_16(x)
84 #define m32_swap(x) swap_32(x)
88 /* this must be aligned to a 256 byte boundary */
89 struct ohci_hcca ghcca[1];
90 /* a pointer to the aligned storage */
91 struct ohci_hcca *phcca;
92 /* this allocates EDs for all possible endpoints */
93 struct ohci_device ohci_dev;
98 /* device which was disconnected */
99 struct usb_device *devgone;
101 /*-------------------------------------------------------------------------*/
103 /* AMD-756 (D2 rev) reports corrupt register contents in some cases.
104 * The erratum (#4) description is incorrect. AMD's workaround waits
105 * till some bits (mostly reserved) are clear; ok for all revs.
107 #define OHCI_QUIRK_AMD756 0xabcd
108 #define read_roothub(hc, register, mask) ({ \
109 u32 temp = readl (&hc->regs->roothub.register); \
110 if (hc->flags & OHCI_QUIRK_AMD756) \
111 while (temp & mask) \
112 temp = readl (&hc->regs->roothub.register); \
115 static u32 roothub_a (struct ohci *hc)
116 { return read_roothub (hc, a, 0xfc0fe000); }
117 static inline u32 roothub_b (struct ohci *hc)
118 { return readl (&hc->regs->roothub.b); }
119 static inline u32 roothub_status (struct ohci *hc)
120 { return readl (&hc->regs->roothub.status); }
121 static u32 roothub_portstatus (struct ohci *hc, int i)
122 { return read_roothub (hc, portstatus [i], 0xffe0fce0); }
125 /* forward declaration */
126 static int hc_interrupt (void);
128 td_submit_job (struct usb_device * dev, unsigned long pipe, void * buffer,
129 int transfer_len, struct devrequest * setup, urb_priv_t * urb, int interval);
131 /*-------------------------------------------------------------------------*
132 * URB support functions
133 *-------------------------------------------------------------------------*/
135 /* free HCD-private data associated with this URB */
137 static void urb_free_priv (urb_priv_t * urb)
143 last = urb->length - 1;
145 for (i = 0; i <= last; i++) {
155 /*-------------------------------------------------------------------------*/
158 static int sohci_get_current_frame_number (struct usb_device * dev);
160 /* debug| print the main components of an URB
161 * small: 0) header + data packets 1) just header */
163 static void pkt_print (struct usb_device * dev, unsigned long pipe, void * buffer,
164 int transfer_len, struct devrequest * setup, char * str, int small)
166 urb_priv_t * purb = &urb_priv;
168 dbg("%s URB:[%4x] dev:%2d,ep:%2d-%c,type:%s,len:%d/%d stat:%#lx",
170 sohci_get_current_frame_number (dev),
171 usb_pipedevice (pipe),
172 usb_pipeendpoint (pipe),
173 usb_pipeout (pipe)? 'O': 'I',
174 usb_pipetype (pipe) < 2? (usb_pipeint (pipe)? "INTR": "ISOC"):
175 (usb_pipecontrol (pipe)? "CTRL": "BULK"),
177 transfer_len, dev->status);
178 #ifdef OHCI_VERBOSE_DEBUG
182 if (usb_pipecontrol (pipe)) {
183 printf (__FILE__ ": cmd(8):");
184 for (i = 0; i < 8 ; i++)
185 printf (" %02x", ((__u8 *) setup) [i]);
188 if (transfer_len > 0 && buffer) {
189 printf (__FILE__ ": data(%d/%d):",
192 len = usb_pipeout (pipe)?
193 transfer_len: purb->actual_length;
194 for (i = 0; i < 16 && i < len; i++)
195 printf (" %02x", ((__u8 *) buffer) [i]);
196 printf ("%s\n", i < len? "...": "");
202 /* just for debugging; prints non-empty branches of the int ed tree inclusive iso eds*/
203 void ep_print_int_eds (ohci_t *ohci, char * str) {
206 for (i= 0; i < 32; i++) {
208 ed_p = &(ohci->hcca->int_table [i]);
211 printf (__FILE__ ": %s branch int %2d(%2x):", str, i, i);
212 while (*ed_p != 0 && j--) {
213 ed_t *ed = (ed_t *)m32_swap(ed_p);
214 printf (" ed: %4x;", ed->hwINFO);
215 ed_p = &ed->hwNextED;
221 static void ohci_dump_intr_mask (char *label, __u32 mask)
223 dbg ("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
226 (mask & OHCI_INTR_MIE) ? " MIE" : "",
227 (mask & OHCI_INTR_OC) ? " OC" : "",
228 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
229 (mask & OHCI_INTR_FNO) ? " FNO" : "",
230 (mask & OHCI_INTR_UE) ? " UE" : "",
231 (mask & OHCI_INTR_RD) ? " RD" : "",
232 (mask & OHCI_INTR_SF) ? " SF" : "",
233 (mask & OHCI_INTR_WDH) ? " WDH" : "",
234 (mask & OHCI_INTR_SO) ? " SO" : ""
238 static void maybe_print_eds (char *label, __u32 value)
240 ed_t *edp = (ed_t *)value;
243 dbg ("%s %08x", label, value);
244 dbg ("%08x", edp->hwINFO);
245 dbg ("%08x", edp->hwTailP);
246 dbg ("%08x", edp->hwHeadP);
247 dbg ("%08x", edp->hwNextED);
251 static char * hcfs2string (int state)
254 case OHCI_USB_RESET: return "reset";
255 case OHCI_USB_RESUME: return "resume";
256 case OHCI_USB_OPER: return "operational";
257 case OHCI_USB_SUSPEND: return "suspend";
262 /* dump control and status registers */
263 static void ohci_dump_status (ohci_t *controller)
265 struct ohci_regs *regs = controller->regs;
268 temp = readl (®s->revision) & 0xff;
270 dbg ("spec %d.%d", (temp >> 4), (temp & 0x0f));
272 temp = readl (®s->control);
273 dbg ("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
274 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
275 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
276 (temp & OHCI_CTRL_IR) ? " IR" : "",
277 hcfs2string (temp & OHCI_CTRL_HCFS),
278 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
279 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
280 (temp & OHCI_CTRL_IE) ? " IE" : "",
281 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
282 temp & OHCI_CTRL_CBSR
285 temp = readl (®s->cmdstatus);
286 dbg ("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
287 (temp & OHCI_SOC) >> 16,
288 (temp & OHCI_OCR) ? " OCR" : "",
289 (temp & OHCI_BLF) ? " BLF" : "",
290 (temp & OHCI_CLF) ? " CLF" : "",
291 (temp & OHCI_HCR) ? " HCR" : ""
294 ohci_dump_intr_mask ("intrstatus", readl (®s->intrstatus));
295 ohci_dump_intr_mask ("intrenable", readl (®s->intrenable));
297 maybe_print_eds ("ed_periodcurrent", readl (®s->ed_periodcurrent));
299 maybe_print_eds ("ed_controlhead", readl (®s->ed_controlhead));
300 maybe_print_eds ("ed_controlcurrent", readl (®s->ed_controlcurrent));
302 maybe_print_eds ("ed_bulkhead", readl (®s->ed_bulkhead));
303 maybe_print_eds ("ed_bulkcurrent", readl (®s->ed_bulkcurrent));
305 maybe_print_eds ("donehead", readl (®s->donehead));
308 static void ohci_dump_roothub (ohci_t *controller, int verbose)
312 temp = roothub_a (controller);
313 ndp = (temp & RH_A_NDP);
314 #ifdef CONFIG_AT91C_PQFP_UHPBUG
315 ndp = (ndp == 2) ? 1:0;
318 dbg ("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
319 ((temp & RH_A_POTPGT) >> 24) & 0xff,
320 (temp & RH_A_NOCP) ? " NOCP" : "",
321 (temp & RH_A_OCPM) ? " OCPM" : "",
322 (temp & RH_A_DT) ? " DT" : "",
323 (temp & RH_A_NPS) ? " NPS" : "",
324 (temp & RH_A_PSM) ? " PSM" : "",
327 temp = roothub_b (controller);
328 dbg ("roothub.b: %08x PPCM=%04x DR=%04x",
330 (temp & RH_B_PPCM) >> 16,
333 temp = roothub_status (controller);
334 dbg ("roothub.status: %08x%s%s%s%s%s%s",
336 (temp & RH_HS_CRWE) ? " CRWE" : "",
337 (temp & RH_HS_OCIC) ? " OCIC" : "",
338 (temp & RH_HS_LPSC) ? " LPSC" : "",
339 (temp & RH_HS_DRWE) ? " DRWE" : "",
340 (temp & RH_HS_OCI) ? " OCI" : "",
341 (temp & RH_HS_LPS) ? " LPS" : ""
345 for (i = 0; i < ndp; i++) {
346 temp = roothub_portstatus (controller, i);
347 dbg ("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
350 (temp & RH_PS_PRSC) ? " PRSC" : "",
351 (temp & RH_PS_OCIC) ? " OCIC" : "",
352 (temp & RH_PS_PSSC) ? " PSSC" : "",
353 (temp & RH_PS_PESC) ? " PESC" : "",
354 (temp & RH_PS_CSC) ? " CSC" : "",
356 (temp & RH_PS_LSDA) ? " LSDA" : "",
357 (temp & RH_PS_PPS) ? " PPS" : "",
358 (temp & RH_PS_PRS) ? " PRS" : "",
359 (temp & RH_PS_POCI) ? " POCI" : "",
360 (temp & RH_PS_PSS) ? " PSS" : "",
362 (temp & RH_PS_PES) ? " PES" : "",
363 (temp & RH_PS_CCS) ? " CCS" : ""
368 static void ohci_dump (ohci_t *controller, int verbose)
370 dbg ("OHCI controller usb-%s state", controller->slot_name);
372 /* dumps some of the state we know about */
373 ohci_dump_status (controller);
375 ep_print_int_eds (controller, "hcca");
376 dbg ("hcca frame #%04x", controller->hcca->frame_no);
377 ohci_dump_roothub (controller, 1);
383 /*-------------------------------------------------------------------------*
384 * Interface functions (URB)
385 *-------------------------------------------------------------------------*/
387 /* get a transfer request */
389 int sohci_submit_job(struct usb_device *dev, unsigned long pipe, void *buffer,
390 int transfer_len, struct devrequest *setup, int interval)
394 urb_priv_t *purb_priv;
399 /* when controller's hung, permit only roothub cleanup attempts
400 * such as powering down ports */
401 if (ohci->disabled) {
402 err("sohci_submit_job: EPIPE");
406 /* every endpoint has a ed, locate and fill it */
407 if (!(ed = ep_add_ed (dev, pipe))) {
408 err("sohci_submit_job: ENOMEM");
412 /* for the private part of the URB we need the number of TDs (size) */
413 switch (usb_pipetype (pipe)) {
414 case PIPE_BULK: /* one TD for every 4096 Byte */
415 size = (transfer_len - 1) / 4096 + 1;
417 case PIPE_CONTROL: /* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
418 size = (transfer_len == 0)? 2:
419 (transfer_len - 1) / 4096 + 3;
423 if (size >= (N_URB_TD - 1)) {
424 err("need %d TDs, only have %d", size, N_URB_TD);
427 purb_priv = &urb_priv;
428 purb_priv->pipe = pipe;
430 /* fill the private part of the URB */
431 purb_priv->length = size;
433 purb_priv->actual_length = 0;
435 /* allocate the TDs */
436 /* note that td[0] was allocated in ep_add_ed */
437 for (i = 0; i < size; i++) {
438 purb_priv->td[i] = td_alloc (dev);
439 if (!purb_priv->td[i]) {
440 purb_priv->length = i;
441 urb_free_priv (purb_priv);
442 err("sohci_submit_job: ENOMEM");
447 if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
448 urb_free_priv (purb_priv);
449 err("sohci_submit_job: EINVAL");
453 /* link the ed into a chain if is not already */
454 if (ed->state != ED_OPER)
457 /* fill the TDs and link it to the ed */
458 td_submit_job(dev, pipe, buffer, transfer_len, setup, purb_priv, interval);
463 /*-------------------------------------------------------------------------*/
466 /* tell us the current USB frame number */
468 static int sohci_get_current_frame_number (struct usb_device *usb_dev)
470 ohci_t *ohci = &gohci;
472 return m16_swap (ohci->hcca->frame_no);
476 /*-------------------------------------------------------------------------*
477 * ED handling functions
478 *-------------------------------------------------------------------------*/
480 /* link an ed into one of the HC chains */
482 static int ep_link (ohci_t *ohci, ed_t *edi)
484 volatile ed_t *ed = edi;
491 if (ohci->ed_controltail == NULL) {
492 writel (ed, &ohci->regs->ed_controlhead);
494 ohci->ed_controltail->hwNextED = m32_swap (ed);
496 ed->ed_prev = ohci->ed_controltail;
497 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
498 !ohci->ed_rm_list[1] && !ohci->sleeping) {
499 ohci->hc_control |= OHCI_CTRL_CLE;
500 writel (ohci->hc_control, &ohci->regs->control);
502 ohci->ed_controltail = edi;
507 if (ohci->ed_bulktail == NULL) {
508 writel (ed, &ohci->regs->ed_bulkhead);
510 ohci->ed_bulktail->hwNextED = m32_swap (ed);
512 ed->ed_prev = ohci->ed_bulktail;
513 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
514 !ohci->ed_rm_list[1] && !ohci->sleeping) {
515 ohci->hc_control |= OHCI_CTRL_BLE;
516 writel (ohci->hc_control, &ohci->regs->control);
518 ohci->ed_bulktail = edi;
524 /*-------------------------------------------------------------------------*/
526 /* unlink an ed from one of the HC chains.
527 * just the link to the ed is unlinked.
528 * the link from the ed still points to another operational ed or 0
529 * so the HC can eventually finish the processing of the unlinked ed */
531 static int ep_unlink (ohci_t *ohci, ed_t *ed)
533 ed->hwINFO |= m32_swap (OHCI_ED_SKIP);
537 if (ed->ed_prev == NULL) {
539 ohci->hc_control &= ~OHCI_CTRL_CLE;
540 writel (ohci->hc_control, &ohci->regs->control);
542 writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_controlhead);
544 ed->ed_prev->hwNextED = ed->hwNextED;
546 if (ohci->ed_controltail == ed) {
547 ohci->ed_controltail = ed->ed_prev;
549 ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
554 if (ed->ed_prev == NULL) {
556 ohci->hc_control &= ~OHCI_CTRL_BLE;
557 writel (ohci->hc_control, &ohci->regs->control);
559 writel (m32_swap (*((__u32 *)&ed->hwNextED)), &ohci->regs->ed_bulkhead);
561 ed->ed_prev->hwNextED = ed->hwNextED;
563 if (ohci->ed_bulktail == ed) {
564 ohci->ed_bulktail = ed->ed_prev;
566 ((ed_t *)m32_swap (*((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
570 ed->state = ED_UNLINK;
575 /*-------------------------------------------------------------------------*/
577 /* add/reinit an endpoint; this should be done once at the usb_set_configuration command,
578 * but the USB stack is a little bit stateless so we do it at every transaction
579 * if the state of the ed is ED_NEW then a dummy td is added and the state is changed to ED_UNLINK
580 * in all other cases the state is left unchanged
581 * the ed info fields are setted anyway even though most of them should not change */
583 static ed_t * ep_add_ed (struct usb_device *usb_dev, unsigned long pipe)
589 ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint (pipe) << 1) |
590 (usb_pipecontrol (pipe)? 0: usb_pipeout (pipe))];
592 if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
593 err("ep_add_ed: pending delete");
594 /* pending delete request */
598 if (ed->state == ED_NEW) {
599 ed->hwINFO = m32_swap (OHCI_ED_SKIP); /* skip ed */
600 /* dummy td; end of td list for ed */
601 td = td_alloc (usb_dev);
602 ed->hwTailP = m32_swap (td);
603 ed->hwHeadP = ed->hwTailP;
604 ed->state = ED_UNLINK;
605 ed->type = usb_pipetype (pipe);
609 ed->hwINFO = m32_swap (usb_pipedevice (pipe)
610 | usb_pipeendpoint (pipe) << 7
611 | (usb_pipeisoc (pipe)? 0x8000: 0)
612 | (usb_pipecontrol (pipe)? 0: (usb_pipeout (pipe)? 0x800: 0x1000))
613 | usb_pipeslow (pipe) << 13
614 | usb_maxpacket (usb_dev, pipe) << 16);
619 /*-------------------------------------------------------------------------*
620 * TD handling functions
621 *-------------------------------------------------------------------------*/
623 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
625 static void td_fill (ohci_t *ohci, unsigned int info,
627 struct usb_device *dev, int index, urb_priv_t *urb_priv)
629 volatile td_t *td, *td_pt;
630 #ifdef OHCI_FILL_TRACE
634 if (index > urb_priv->length) {
635 err("index > length");
638 /* use this td as the next dummy */
639 td_pt = urb_priv->td [index];
642 /* fill the old dummy TD */
643 td = urb_priv->td [index] = (td_t *)(m32_swap (urb_priv->ed->hwTailP) & ~0xf);
645 td->ed = urb_priv->ed;
646 td->next_dl_td = NULL;
648 td->data = (__u32)data;
649 #ifdef OHCI_FILL_TRACE
650 if ((usb_pipetype(urb_priv->pipe) == PIPE_BULK) && usb_pipeout(urb_priv->pipe)) {
651 for (i = 0; i < len; i++)
652 printf("td->data[%d] %#2x ",i, ((unsigned char *)td->data)[i]);
659 td->hwINFO = m32_swap (info);
660 td->hwCBP = m32_swap (data);
662 td->hwBE = m32_swap (data + len - 1);
665 td->hwNextTD = m32_swap (td_pt);
666 td->hwPSW [0] = m16_swap (((__u32)data & 0x0FFF) | 0xE000);
668 /* append to queue */
669 td->ed->hwTailP = td->hwNextTD;
672 /*-------------------------------------------------------------------------*/
674 /* prepare all TDs of a transfer */
676 static void td_submit_job (struct usb_device *dev, unsigned long pipe, void *buffer,
677 int transfer_len, struct devrequest *setup, urb_priv_t *urb, int interval)
679 ohci_t *ohci = &gohci;
680 int data_len = transfer_len;
684 unsigned int toggle = 0;
686 /* OHCI handles the DATA-toggles itself, we just use the USB-toggle bits for reseting */
687 if(usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
688 toggle = TD_T_TOGGLE;
691 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 1);
699 switch (usb_pipetype (pipe)) {
701 info = usb_pipeout (pipe)?
702 TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
703 while(data_len > 4096) {
704 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, 4096, dev, cnt, urb);
705 data += 4096; data_len -= 4096; cnt++;
707 info = usb_pipeout (pipe)?
708 TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
709 td_fill (ohci, info | (cnt? TD_T_TOGGLE:toggle), data, data_len, dev, cnt, urb);
713 writel (OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
717 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
718 td_fill (ohci, info, setup, 8, dev, cnt++, urb);
720 info = usb_pipeout (pipe)?
721 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 : TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
722 /* NOTE: mishandles transfers >8K, some >4K */
723 td_fill (ohci, info, data, data_len, dev, cnt++, urb);
725 info = usb_pipeout (pipe)?
726 TD_CC | TD_DP_IN | TD_T_DATA1: TD_CC | TD_DP_OUT | TD_T_DATA1;
727 td_fill (ohci, info, data, 0, dev, cnt++, urb);
729 writel (OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
732 if (urb->length != cnt)
733 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
736 /*-------------------------------------------------------------------------*
737 * Done List handling functions
738 *-------------------------------------------------------------------------*/
741 /* calculate the transfer length and update the urb */
743 static void dl_transfer_length(td_t * td)
745 __u32 tdINFO, tdBE, tdCBP;
746 urb_priv_t *lurb_priv = &urb_priv;
748 tdINFO = m32_swap (td->hwINFO);
749 tdBE = m32_swap (td->hwBE);
750 tdCBP = m32_swap (td->hwCBP);
753 if (!(usb_pipetype (lurb_priv->pipe) == PIPE_CONTROL &&
754 ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
757 lurb_priv->actual_length += tdBE - td->data + 1;
759 lurb_priv->actual_length += tdCBP - td->data;
764 /*-------------------------------------------------------------------------*/
766 /* replies to the request have to be on a FIFO basis so
767 * we reverse the reversed done-list */
769 static td_t * dl_reverse_done_list (ohci_t *ohci)
773 td_t *td_list = NULL;
774 urb_priv_t *lurb_priv = NULL;
776 td_list_hc = m32_swap (ohci->hcca->done_head) & 0xfffffff0;
777 ohci->hcca->done_head = 0;
780 td_list = (td_t *)td_list_hc;
782 if (TD_CC_GET (m32_swap (td_list->hwINFO))) {
783 lurb_priv = &urb_priv;
784 dbg(" USB-error/status: %x : %p",
785 TD_CC_GET (m32_swap (td_list->hwINFO)), td_list);
786 if (td_list->ed->hwHeadP & m32_swap (0x1)) {
787 if (lurb_priv && ((td_list->index + 1) < lurb_priv->length)) {
788 td_list->ed->hwHeadP =
789 (lurb_priv->td[lurb_priv->length - 1]->hwNextTD & m32_swap (0xfffffff0)) |
790 (td_list->ed->hwHeadP & m32_swap (0x2));
791 lurb_priv->td_cnt += lurb_priv->length - td_list->index - 1;
793 td_list->ed->hwHeadP &= m32_swap (0xfffffff2);
797 td_list->next_dl_td = td_rev;
799 td_list_hc = m32_swap (td_list->hwNextTD) & 0xfffffff0;
804 /*-------------------------------------------------------------------------*/
807 static int dl_done_list (ohci_t *ohci, td_t *td_list)
809 td_t *td_list_next = NULL;
814 urb_priv_t *lurb_priv;
815 __u32 tdINFO, edHeadP, edTailP;
818 td_list_next = td_list->next_dl_td;
820 lurb_priv = &urb_priv;
821 tdINFO = m32_swap (td_list->hwINFO);
825 dl_transfer_length(td_list);
827 /* error code of transfer */
828 cc = TD_CC_GET (tdINFO);
830 dbg("ConditionCode %#x", cc);
831 stat = cc_to_error[cc];
834 if (ed->state != ED_NEW) {
835 edHeadP = m32_swap (ed->hwHeadP) & 0xfffffff0;
836 edTailP = m32_swap (ed->hwTailP);
838 /* unlink eds if they are not busy */
839 if ((edHeadP == edTailP) && (ed->state == ED_OPER))
840 ep_unlink (ohci, ed);
843 td_list = td_list_next;
848 /*-------------------------------------------------------------------------*
850 *-------------------------------------------------------------------------*/
852 /* Device descriptor */
853 static __u8 root_hub_dev_des[] =
855 0x12, /* __u8 bLength; */
856 0x01, /* __u8 bDescriptorType; Device */
857 0x10, /* __u16 bcdUSB; v1.1 */
859 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
860 0x00, /* __u8 bDeviceSubClass; */
861 0x00, /* __u8 bDeviceProtocol; */
862 0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
863 0x00, /* __u16 idVendor; */
865 0x00, /* __u16 idProduct; */
867 0x00, /* __u16 bcdDevice; */
869 0x00, /* __u8 iManufacturer; */
870 0x01, /* __u8 iProduct; */
871 0x00, /* __u8 iSerialNumber; */
872 0x01 /* __u8 bNumConfigurations; */
876 /* Configuration descriptor */
877 static __u8 root_hub_config_des[] =
879 0x09, /* __u8 bLength; */
880 0x02, /* __u8 bDescriptorType; Configuration */
881 0x19, /* __u16 wTotalLength; */
883 0x01, /* __u8 bNumInterfaces; */
884 0x01, /* __u8 bConfigurationValue; */
885 0x00, /* __u8 iConfiguration; */
886 0x40, /* __u8 bmAttributes;
887 Bit 7: Bus-powered, 6: Self-powered, 5 Remote-wakwup, 4..0: resvd */
888 0x00, /* __u8 MaxPower; */
891 0x09, /* __u8 if_bLength; */
892 0x04, /* __u8 if_bDescriptorType; Interface */
893 0x00, /* __u8 if_bInterfaceNumber; */
894 0x00, /* __u8 if_bAlternateSetting; */
895 0x01, /* __u8 if_bNumEndpoints; */
896 0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
897 0x00, /* __u8 if_bInterfaceSubClass; */
898 0x00, /* __u8 if_bInterfaceProtocol; */
899 0x00, /* __u8 if_iInterface; */
902 0x07, /* __u8 ep_bLength; */
903 0x05, /* __u8 ep_bDescriptorType; Endpoint */
904 0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
905 0x03, /* __u8 ep_bmAttributes; Interrupt */
906 0x02, /* __u16 ep_wMaxPacketSize; ((MAX_ROOT_PORTS + 1) / 8 */
908 0xff /* __u8 ep_bInterval; 255 ms */
911 static unsigned char root_hub_str_index0[] =
913 0x04, /* __u8 bLength; */
914 0x03, /* __u8 bDescriptorType; String-descriptor */
915 0x09, /* __u8 lang ID */
916 0x04, /* __u8 lang ID */
919 static unsigned char root_hub_str_index1[] =
921 28, /* __u8 bLength; */
922 0x03, /* __u8 bDescriptorType; String-descriptor */
923 'O', /* __u8 Unicode */
924 0, /* __u8 Unicode */
925 'H', /* __u8 Unicode */
926 0, /* __u8 Unicode */
927 'C', /* __u8 Unicode */
928 0, /* __u8 Unicode */
929 'I', /* __u8 Unicode */
930 0, /* __u8 Unicode */
931 ' ', /* __u8 Unicode */
932 0, /* __u8 Unicode */
933 'R', /* __u8 Unicode */
934 0, /* __u8 Unicode */
935 'o', /* __u8 Unicode */
936 0, /* __u8 Unicode */
937 'o', /* __u8 Unicode */
938 0, /* __u8 Unicode */
939 't', /* __u8 Unicode */
940 0, /* __u8 Unicode */
941 ' ', /* __u8 Unicode */
942 0, /* __u8 Unicode */
943 'H', /* __u8 Unicode */
944 0, /* __u8 Unicode */
945 'u', /* __u8 Unicode */
946 0, /* __u8 Unicode */
947 'b', /* __u8 Unicode */
948 0, /* __u8 Unicode */
951 /* Hub class-specific descriptor is constructed dynamically */
954 /*-------------------------------------------------------------------------*/
956 #define OK(x) len = (x); break
958 #define WR_RH_STAT(x) {info("WR:status %#8x", (x));writel((x), &gohci.regs->roothub.status);}
959 #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, (x));writel((x), &gohci.regs->roothub.portstatus[wIndex-1]);}
961 #define WR_RH_STAT(x) writel((x), &gohci.regs->roothub.status)
962 #define WR_RH_PORTSTAT(x) writel((x), &gohci.regs->roothub.portstatus[wIndex-1])
964 #define RD_RH_STAT roothub_status(&gohci)
965 #define RD_RH_PORTSTAT roothub_portstatus(&gohci,wIndex-1)
967 /* request to virtual root hub */
969 int rh_check_port_status(ohci_t *controller)
975 temp = roothub_a (controller);
976 ndp = (temp & RH_A_NDP);
977 #ifdef CONFIG_AT91C_PQFP_UHPBUG
978 ndp = (ndp == 2) ? 1:0;
980 for (i = 0; i < ndp; i++) {
981 temp = roothub_portstatus (controller, i);
982 /* check for a device disconnect */
983 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
984 (RH_PS_PESC | RH_PS_CSC)) &&
985 ((temp & RH_PS_CCS) == 0)) {
993 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
994 void *buffer, int transfer_len, struct devrequest *cmd)
996 void * data = buffer;
997 int leni = transfer_len;
1001 __u8 *data_buf = (__u8 *)datab;
1008 urb_priv.actual_length = 0;
1009 pkt_print(dev, pipe, buffer, transfer_len, cmd, "SUB(rh)", usb_pipein(pipe));
1013 if ((pipe & PIPE_INTERRUPT) == PIPE_INTERRUPT) {
1014 info("Root-Hub submit IRQ: NOT implemented");
1018 bmRType_bReq = cmd->requesttype | (cmd->request << 8);
1019 wValue = m16_swap (cmd->value);
1020 wIndex = m16_swap (cmd->index);
1021 wLength = m16_swap (cmd->length);
1023 info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1024 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
1026 switch (bmRType_bReq) {
1027 /* Request Destination:
1028 without flags: Device,
1029 RH_INTERFACE: interface,
1030 RH_ENDPOINT: endpoint,
1031 RH_CLASS means HUB here,
1032 RH_OTHER | RH_CLASS almost ever means HUB_PORT here
1036 *(__u16 *) data_buf = m16_swap (1); OK (2);
1037 case RH_GET_STATUS | RH_INTERFACE:
1038 *(__u16 *) data_buf = m16_swap (0); OK (2);
1039 case RH_GET_STATUS | RH_ENDPOINT:
1040 *(__u16 *) data_buf = m16_swap (0); OK (2);
1041 case RH_GET_STATUS | RH_CLASS:
1042 *(__u32 *) data_buf = m32_swap (
1043 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1045 case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1046 *(__u32 *) data_buf = m32_swap (RD_RH_PORTSTAT); OK (4);
1048 case RH_CLEAR_FEATURE | RH_ENDPOINT:
1050 case (RH_ENDPOINT_STALL): OK (0);
1054 case RH_CLEAR_FEATURE | RH_CLASS:
1056 case RH_C_HUB_LOCAL_POWER:
1058 case (RH_C_HUB_OVER_CURRENT):
1059 WR_RH_STAT(RH_HS_OCIC); OK (0);
1063 case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1065 case (RH_PORT_ENABLE):
1066 WR_RH_PORTSTAT (RH_PS_CCS ); OK (0);
1067 case (RH_PORT_SUSPEND):
1068 WR_RH_PORTSTAT (RH_PS_POCI); OK (0);
1069 case (RH_PORT_POWER):
1070 WR_RH_PORTSTAT (RH_PS_LSDA); OK (0);
1071 case (RH_C_PORT_CONNECTION):
1072 WR_RH_PORTSTAT (RH_PS_CSC ); OK (0);
1073 case (RH_C_PORT_ENABLE):
1074 WR_RH_PORTSTAT (RH_PS_PESC); OK (0);
1075 case (RH_C_PORT_SUSPEND):
1076 WR_RH_PORTSTAT (RH_PS_PSSC); OK (0);
1077 case (RH_C_PORT_OVER_CURRENT):
1078 WR_RH_PORTSTAT (RH_PS_OCIC); OK (0);
1079 case (RH_C_PORT_RESET):
1080 WR_RH_PORTSTAT (RH_PS_PRSC); OK (0);
1084 case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1086 case (RH_PORT_SUSPEND):
1087 WR_RH_PORTSTAT (RH_PS_PSS ); OK (0);
1088 case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
1089 if (RD_RH_PORTSTAT & RH_PS_CCS)
1090 WR_RH_PORTSTAT (RH_PS_PRS);
1092 case (RH_PORT_POWER):
1093 WR_RH_PORTSTAT (RH_PS_PPS ); OK (0);
1094 case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
1095 if (RD_RH_PORTSTAT & RH_PS_CCS)
1096 WR_RH_PORTSTAT (RH_PS_PES );
1101 case RH_SET_ADDRESS: gohci.rh.devnum = wValue; OK(0);
1103 case RH_GET_DESCRIPTOR:
1104 switch ((wValue & 0xff00) >> 8) {
1105 case (0x01): /* device descriptor */
1106 len = min_t(unsigned int,
1109 sizeof (root_hub_dev_des),
1111 data_buf = root_hub_dev_des; OK(len);
1112 case (0x02): /* configuration descriptor */
1113 len = min_t(unsigned int,
1116 sizeof (root_hub_config_des),
1118 data_buf = root_hub_config_des; OK(len);
1119 case (0x03): /* string descriptors */
1120 if(wValue==0x0300) {
1121 len = min_t(unsigned int,
1124 sizeof (root_hub_str_index0),
1126 data_buf = root_hub_str_index0;
1129 if(wValue==0x0301) {
1130 len = min_t(unsigned int,
1133 sizeof (root_hub_str_index1),
1135 data_buf = root_hub_str_index1;
1139 stat = USB_ST_STALLED;
1143 case RH_GET_DESCRIPTOR | RH_CLASS:
1145 __u32 temp = roothub_a (&gohci);
1147 data_buf [0] = 9; /* min length; */
1148 data_buf [1] = 0x29;
1149 data_buf [2] = temp & RH_A_NDP;
1150 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1151 data_buf [2] = (data_buf [2] == 2) ? 1:0;
1154 if (temp & RH_A_PSM) /* per-port power switching? */
1155 data_buf [3] |= 0x1;
1156 if (temp & RH_A_NOCP) /* no overcurrent reporting? */
1157 data_buf [3] |= 0x10;
1158 else if (temp & RH_A_OCPM) /* per-port overcurrent reporting? */
1159 data_buf [3] |= 0x8;
1161 /* corresponds to data_buf[4-7] */
1163 data_buf [5] = (temp & RH_A_POTPGT) >> 24;
1164 temp = roothub_b (&gohci);
1165 data_buf [7] = temp & RH_B_DR;
1166 if (data_buf [2] < 7) {
1167 data_buf [8] = 0xff;
1170 data_buf [8] = (temp & RH_B_DR) >> 8;
1171 data_buf [10] = data_buf [9] = 0xff;
1174 len = min_t(unsigned int, leni,
1175 min_t(unsigned int, data_buf [0], wLength));
1179 case RH_GET_CONFIGURATION: *(__u8 *) data_buf = 0x01; OK (1);
1181 case RH_SET_CONFIGURATION: WR_RH_STAT (0x10000); OK (0);
1184 dbg ("unsupported root hub command");
1185 stat = USB_ST_STALLED;
1189 ohci_dump_roothub (&gohci, 1);
1194 len = min_t(int, len, leni);
1195 if (data != data_buf)
1196 memcpy (data, data_buf, len);
1202 urb_priv.actual_length = transfer_len;
1203 pkt_print(dev, pipe, buffer, transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1211 /*-------------------------------------------------------------------------*/
1213 /* common code for handling submit messages - used for all but root hub */
1215 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1216 int transfer_len, struct devrequest *setup, int interval)
1219 int maxsize = usb_maxpacket(dev, pipe);
1222 /* device pulled? Shortcut the action. */
1223 if (devgone == dev) {
1224 dev->status = USB_ST_CRC_ERR;
1229 urb_priv.actual_length = 0;
1230 pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1235 err("submit_common_message: pipesize for pipe %lx is zero",
1240 if (sohci_submit_job(dev, pipe, buffer, transfer_len, setup, interval) < 0) {
1241 err("sohci_submit_job failed");
1246 /* ohci_dump_status(&gohci); */
1248 /* allow more time for a BULK device to react - some are slow */
1249 #define BULK_TO 5000 /* timeout in milliseconds */
1250 if (usb_pipetype (pipe) == PIPE_BULK)
1255 /* wait for it to complete */
1257 /* check whether the controller is done */
1258 stat = hc_interrupt();
1260 stat = USB_ST_CRC_ERR;
1263 if (stat >= 0 && stat != 0xff) {
1264 /* 0xff is returned for an SF-interrupt */
1270 err("CTL:TIMEOUT ");
1271 stat = USB_ST_CRC_ERR;
1275 /* we got an Root Hub Status Change interrupt */
1278 ohci_dump_roothub (&gohci, 1);
1282 timeout = rh_check_port_status(&gohci);
1284 #if 0 /* this does nothing useful, but leave it here in case that changes */
1285 /* the called routine adds 1 to the passed value */
1286 usb_hub_port_connect_change(gohci.rh.dev, timeout - 1);
1290 * This is potentially dangerous because it assumes
1291 * that only one device is ever plugged in!
1298 dev->act_len = transfer_len;
1301 pkt_print(dev, pipe, buffer, transfer_len, setup, "RET(ctlr)", usb_pipein(pipe));
1306 /* free TDs in urb_priv */
1307 urb_free_priv (&urb_priv);
1311 /* submit routines called from usb.c */
1312 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1315 info("submit_bulk_msg");
1316 return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1319 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1320 int transfer_len, struct devrequest *setup)
1322 int maxsize = usb_maxpacket(dev, pipe);
1324 info("submit_control_msg");
1326 urb_priv.actual_length = 0;
1327 pkt_print(dev, pipe, buffer, transfer_len, setup, "SUB", usb_pipein(pipe));
1332 err("submit_control_message: pipesize for pipe %lx is zero",
1336 if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1338 /* root hub - redirect */
1339 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1343 return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1346 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1347 int transfer_len, int interval)
1349 info("submit_int_msg");
1353 /*-------------------------------------------------------------------------*
1355 *-------------------------------------------------------------------------*/
1357 /* reset the HC and BUS */
1359 static int hc_reset (ohci_t *ohci)
1362 int smm_timeout = 50; /* 0,5 sec */
1364 dbg("%s\n", __FUNCTION__);
1366 if (readl (&ohci->regs->control) & OHCI_CTRL_IR) { /* SMM owns the HC */
1367 writel (OHCI_OCR, &ohci->regs->cmdstatus); /* request ownership */
1368 info("USB HC TakeOver from SMM");
1369 while (readl (&ohci->regs->control) & OHCI_CTRL_IR) {
1371 if (--smm_timeout == 0) {
1372 err("USB HC TakeOver failed!");
1378 /* Disable HC interrupts */
1379 writel (OHCI_INTR_MIE, &ohci->regs->intrdisable);
1381 dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n",
1383 readl(&ohci->regs->control));
1385 /* Reset USB (needed by some controllers) */
1386 writel (0, &ohci->regs->control);
1388 /* HC Reset requires max 10 us delay */
1389 writel (OHCI_HCR, &ohci->regs->cmdstatus);
1390 while ((readl (&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1391 if (--timeout == 0) {
1392 err("USB HC reset timed out!");
1400 /*-------------------------------------------------------------------------*/
1402 /* Start an OHCI controller, set the BUS operational
1404 * connect the virtual root hub */
1406 static int hc_start (ohci_t * ohci)
1409 unsigned int fminterval;
1413 /* Tell the controller where the control and bulk lists are
1414 * The lists are empty now. */
1416 writel (0, &ohci->regs->ed_controlhead);
1417 writel (0, &ohci->regs->ed_bulkhead);
1419 writel ((__u32)ohci->hcca, &ohci->regs->hcca); /* a reset clears this */
1421 fminterval = 0x2edf;
1422 writel ((fminterval * 9) / 10, &ohci->regs->periodicstart);
1423 fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1424 writel (fminterval, &ohci->regs->fminterval);
1425 writel (0x628, &ohci->regs->lsthresh);
1427 /* start controller operations */
1428 ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1430 writel (ohci->hc_control, &ohci->regs->control);
1432 /* disable all interrupts */
1433 mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1434 OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1435 OHCI_INTR_OC | OHCI_INTR_MIE);
1436 writel (mask, &ohci->regs->intrdisable);
1437 /* clear all interrupts */
1438 mask &= ~OHCI_INTR_MIE;
1439 writel (mask, &ohci->regs->intrstatus);
1440 /* Choose the interrupts we care about now - but w/o MIE */
1441 mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1442 writel (mask, &ohci->regs->intrenable);
1445 /* required for AMD-756 and some Mac platforms */
1446 writel ((roothub_a (ohci) | RH_A_NPS) & ~RH_A_PSM,
1447 &ohci->regs->roothub.a);
1448 writel (RH_HS_LPSC, &ohci->regs->roothub.status);
1449 #endif /* OHCI_USE_NPS */
1451 #define mdelay(n) ({unsigned long msec=(n); while (msec--) udelay(1000);})
1452 /* POTPGT delay is bits 24-31, in 2 ms units. */
1453 mdelay ((roothub_a (ohci) >> 23) & 0x1fe);
1455 /* connect the virtual root hub */
1456 ohci->rh.devnum = 0;
1461 /*-------------------------------------------------------------------------*/
1463 /* an interrupt happens */
1468 ohci_t *ohci = &gohci;
1469 struct ohci_regs *regs = ohci->regs;
1473 if ((ohci->hcca->done_head != 0) && !(m32_swap (ohci->hcca->done_head) & 0x01)) {
1474 ints = OHCI_INTR_WDH;
1476 ints = readl (®s->intrstatus);
1479 /* dbg("Interrupt: %x frame: %x", ints, le16_to_cpu (ohci->hcca->frame_no)); */
1481 if (ints & OHCI_INTR_RHSC) {
1485 if (ints & OHCI_INTR_UE) {
1487 err ("OHCI Unrecoverable Error, controller usb-%s disabled",
1489 /* e.g. due to PCI Master/Target Abort */
1492 ohci_dump (ohci, 1);
1496 /* FIXME: be optimistic, hope that bug won't repeat often. */
1497 /* Make some non-interrupt context restart the controller. */
1498 /* Count and limit the retries though; either hardware or */
1499 /* software errors can go forever... */
1504 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 = m16_swap (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(void)
1555 #if CFG_USB_OHCI_CPU_INIT
1556 /* cpu dependant init */
1561 #if CFG_USB_OHCI_BOARD_INIT
1562 /* board dependant init */
1563 if(usb_board_init())
1566 memset (&gohci, 0, sizeof (ohci_t));
1567 memset (&urb_priv, 0, sizeof (urb_priv_t));
1569 /* align the storage */
1570 if ((__u32)&ghcca[0] & 0xff) {
1571 err("HCCA not aligned!!");
1575 info("aligned ghcca %p", phcca);
1576 memset(&ohci_dev, 0, sizeof(struct ohci_device));
1577 if ((__u32)&ohci_dev.ed[0] & 0x7) {
1578 err("EDs not aligned!!");
1581 memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1582 if ((__u32)gtd & 0x7) {
1583 err("TDs not aligned!!");
1588 memset (phcca, 0, sizeof (struct ohci_hcca));
1593 gohci.regs = (struct ohci_regs *)CFG_USB_OHCI_REGS_BASE;
1596 gohci.slot_name = CFG_USB_OHCI_SLOT_NAME;
1598 if (hc_reset (&gohci) < 0) {
1599 hc_release_ohci (&gohci);
1600 err ("can't reset usb-%s", gohci.slot_name);
1601 /* Initialization failed disable clocks */
1602 #if CFG_USB_OHCI_BOARD_INIT
1603 /* board dependant cleanup */
1607 #if CFG_USB_OHCI_CPU_INIT
1608 /* cpu dependant cleanup */
1614 /* FIXME this is a second HC reset; why?? */
1615 /* writel(gohci.hc_control = OHCI_USB_RESET, &gohci.regs->control);
1617 if (hc_start (&gohci) < 0) {
1618 err ("can't start usb-%s", gohci.slot_name);
1619 hc_release_ohci (&gohci);
1620 /* Initialization failed */
1621 #if CFG_USB_OHCI_BOARD_INIT
1622 /* board dependant cleanup */
1626 #if CFG_USB_OHCI_CPU_INIT
1627 /* cpu dependant cleanup */
1634 ohci_dump (&gohci, 1);
1642 int usb_lowlevel_stop(void)
1644 /* this gets called really early - before the controller has */
1645 /* even been initialized! */
1648 /* TODO release any interrupts, etc. */
1649 /* call hc_release_ohci() here ? */
1652 #if CFG_USB_OHCI_BOARD_INIT
1653 /* board dependant cleanup */
1654 if(usb_board_stop())
1658 #if CFG_USB_OHCI_CPU_INIT
1659 /* cpu dependant cleanup */
1667 #endif /* CONFIG_USB_OHCI */