2 * URB OHCI HCD (Host Controller Driver) for USB on the AT91RM9200 and PCI bus.
4 * Interrupt support is added. Now, it has been tested
5 * on ULI1575 chip and works well with USB keyboard.
8 * Zhang Wei, Freescale Semiconductor, Inc. <wei.zhang@freescale.com>
11 * Gary Jennejohn, DENX Software Engineering <garyj@denx.de>
13 * Note: Much of this code has been derived from Linux 2.4
14 * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
15 * (C) Copyright 2000-2002 David Brownell
17 * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
18 * ebenard@eukrea.com - based on s3c24x0's driver
20 * SPDX-License-Identifier: GPL-2.0+
24 * 1 - Read doc/README.generic_usb_ohci
25 * 2 - this driver is intended for use with USB Mass Storage Devices
26 * (BBB) and USB keyboard. There is NO support for Isochronous pipes!
27 * 2 - when running on a PQFP208 AT91RM9200, define CONFIG_AT91C_PQFP_UHPBUG
28 * to activate workaround for bug #41 or this driver will NOT work!
32 #include <asm/byteorder.h>
34 #if defined(CONFIG_PCI_OHCI)
36 #if !defined(CONFIG_PCI_OHCI_DEVNO)
37 #define CONFIG_PCI_OHCI_DEVNO 0
46 #ifdef CONFIG_AT91RM9200
47 #include <asm/arch/hardware.h> /* needed for AT91_USB_HOST_BASE */
50 #if defined(CONFIG_CPU_ARM920T) || \
51 defined(CONFIG_S3C24X0) || \
52 defined(CONFIG_440EP) || \
53 defined(CONFIG_PCI_OHCI) || \
54 defined(CONFIG_MPC5200) || \
55 defined(CONFIG_SYS_OHCI_USE_NPS)
56 # define OHCI_USE_NPS /* force NoPowerSwitching mode */
59 #undef OHCI_VERBOSE_DEBUG /* not always helpful */
62 #undef OHCI_FILL_TRACE
64 /* For initializing controller (mask in an HCFS mode too) */
65 #define OHCI_CONTROL_INIT \
66 (OHCI_CTRL_CBSR & 0x3) | OHCI_CTRL_IE | OHCI_CTRL_PLE
68 #ifdef CONFIG_PCI_OHCI
69 static struct pci_device_id ohci_pci_ids[] = {
70 {0x10b9, 0x5237}, /* ULI1575 PCI OHCI module ids */
71 {0x1033, 0x0035}, /* NEC PCI OHCI module ids */
72 {0x1131, 0x1561}, /* Philips 1561 PCI OHCI module ids */
73 /* Please add supported PCI OHCI controller ids here */
78 #ifdef CONFIG_PCI_EHCI_DEVNO
79 static struct pci_device_id ehci_pci_ids[] = {
80 {0x1131, 0x1562}, /* Philips 1562 PCI EHCI module ids */
81 /* Please add supported PCI EHCI controller ids here */
87 #define dbg(format, arg...) printf("DEBUG: " format "\n", ## arg)
89 #define dbg(format, arg...) do {} while (0)
91 #define err(format, arg...) printf("ERROR: " format "\n", ## arg)
93 #define info(format, arg...) printf("INFO: " format "\n", ## arg)
95 #define info(format, arg...) do {} while (0)
98 #ifdef CONFIG_SYS_OHCI_BE_CONTROLLER
99 # define m16_swap(x) cpu_to_be16(x)
100 # define m32_swap(x) cpu_to_be32(x)
102 # define m16_swap(x) cpu_to_le16(x)
103 # define m32_swap(x) cpu_to_le32(x)
104 #endif /* CONFIG_SYS_OHCI_BE_CONTROLLER */
108 /* this must be aligned to a 256 byte boundary */
109 struct ohci_hcca ghcca[1];
110 /* a pointer to the aligned storage */
111 struct ohci_hcca *phcca;
112 /* this allocates EDs for all possible endpoints */
113 struct ohci_device ohci_dev;
115 static inline u32 roothub_a(struct ohci *hc)
116 { return ohci_readl(&hc->regs->roothub.a); }
117 static inline u32 roothub_b(struct ohci *hc)
118 { return ohci_readl(&hc->regs->roothub.b); }
119 static inline u32 roothub_status(struct ohci *hc)
120 { return ohci_readl(&hc->regs->roothub.status); }
121 static inline u32 roothub_portstatus(struct ohci *hc, int i)
122 { return ohci_readl(&hc->regs->roothub.portstatus[i]); }
124 /* forward declaration */
125 static int hc_interrupt(void);
126 static void td_submit_job(struct usb_device *dev, unsigned long pipe,
127 void *buffer, int transfer_len,
128 struct devrequest *setup, urb_priv_t *urb,
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++) {
156 /*-------------------------------------------------------------------------*/
159 static int sohci_get_current_frame_number(struct usb_device *dev);
161 /* debug| print the main components of an URB
162 * small: 0) header + data packets 1) just header */
164 static void pkt_print(urb_priv_t *purb, struct usb_device *dev,
165 unsigned long pipe, void *buffer, int transfer_len,
166 struct devrequest *setup, char *str, int small)
168 dbg("%s URB:[%4x] dev:%2lu,ep:%2lu-%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 ? \
175 (usb_pipeint(pipe)? "INTR": "ISOC"): \
176 (usb_pipecontrol(pipe)? "CTRL": "BULK"),
177 (purb ? purb->actual_length : 0),
178 transfer_len, dev->status);
179 #ifdef OHCI_VERBOSE_DEBUG
183 if (usb_pipecontrol(pipe)) {
184 printf(__FILE__ ": cmd(8):");
185 for (i = 0; i < 8 ; i++)
186 printf(" %02x", ((__u8 *) setup) [i]);
189 if (transfer_len > 0 && buffer) {
190 printf(__FILE__ ": data(%d/%d):",
191 (purb ? purb->actual_length : 0),
193 len = usb_pipeout(pipe)? transfer_len:
194 (purb ? purb->actual_length : 0);
195 for (i = 0; i < 16 && i < len; i++)
196 printf(" %02x", ((__u8 *) buffer) [i]);
197 printf("%s\n", i < len? "...": "");
203 /* just for debugging; prints non-empty branches of the int ed tree
204 * inclusive iso eds */
205 void ep_print_int_eds(ohci_t *ohci, char *str)
209 for (i = 0; i < 32; i++) {
211 ed_p = &(ohci->hcca->int_table [i]);
214 printf(__FILE__ ": %s branch int %2d(%2x):", str, i, i);
215 while (*ed_p != 0 && j--) {
216 ed_t *ed = (ed_t *)m32_swap(ed_p);
217 printf(" ed: %4x;", ed->hwINFO);
218 ed_p = &ed->hwNextED;
224 static void ohci_dump_intr_mask(char *label, __u32 mask)
226 dbg("%s: 0x%08x%s%s%s%s%s%s%s%s%s",
229 (mask & OHCI_INTR_MIE) ? " MIE" : "",
230 (mask & OHCI_INTR_OC) ? " OC" : "",
231 (mask & OHCI_INTR_RHSC) ? " RHSC" : "",
232 (mask & OHCI_INTR_FNO) ? " FNO" : "",
233 (mask & OHCI_INTR_UE) ? " UE" : "",
234 (mask & OHCI_INTR_RD) ? " RD" : "",
235 (mask & OHCI_INTR_SF) ? " SF" : "",
236 (mask & OHCI_INTR_WDH) ? " WDH" : "",
237 (mask & OHCI_INTR_SO) ? " SO" : ""
241 static void maybe_print_eds(char *label, __u32 value)
243 ed_t *edp = (ed_t *)value;
246 dbg("%s %08x", label, value);
247 dbg("%08x", edp->hwINFO);
248 dbg("%08x", edp->hwTailP);
249 dbg("%08x", edp->hwHeadP);
250 dbg("%08x", edp->hwNextED);
254 static char *hcfs2string(int state)
257 case OHCI_USB_RESET: return "reset";
258 case OHCI_USB_RESUME: return "resume";
259 case OHCI_USB_OPER: return "operational";
260 case OHCI_USB_SUSPEND: return "suspend";
265 /* dump control and status registers */
266 static void ohci_dump_status(ohci_t *controller)
268 struct ohci_regs *regs = controller->regs;
271 temp = ohci_readl(®s->revision) & 0xff;
273 dbg("spec %d.%d", (temp >> 4), (temp & 0x0f));
275 temp = ohci_readl(®s->control);
276 dbg("control: 0x%08x%s%s%s HCFS=%s%s%s%s%s CBSR=%d", temp,
277 (temp & OHCI_CTRL_RWE) ? " RWE" : "",
278 (temp & OHCI_CTRL_RWC) ? " RWC" : "",
279 (temp & OHCI_CTRL_IR) ? " IR" : "",
280 hcfs2string(temp & OHCI_CTRL_HCFS),
281 (temp & OHCI_CTRL_BLE) ? " BLE" : "",
282 (temp & OHCI_CTRL_CLE) ? " CLE" : "",
283 (temp & OHCI_CTRL_IE) ? " IE" : "",
284 (temp & OHCI_CTRL_PLE) ? " PLE" : "",
285 temp & OHCI_CTRL_CBSR
288 temp = ohci_readl(®s->cmdstatus);
289 dbg("cmdstatus: 0x%08x SOC=%d%s%s%s%s", temp,
290 (temp & OHCI_SOC) >> 16,
291 (temp & OHCI_OCR) ? " OCR" : "",
292 (temp & OHCI_BLF) ? " BLF" : "",
293 (temp & OHCI_CLF) ? " CLF" : "",
294 (temp & OHCI_HCR) ? " HCR" : ""
297 ohci_dump_intr_mask("intrstatus", ohci_readl(®s->intrstatus));
298 ohci_dump_intr_mask("intrenable", ohci_readl(®s->intrenable));
300 maybe_print_eds("ed_periodcurrent",
301 ohci_readl(®s->ed_periodcurrent));
303 maybe_print_eds("ed_controlhead", ohci_readl(®s->ed_controlhead));
304 maybe_print_eds("ed_controlcurrent",
305 ohci_readl(®s->ed_controlcurrent));
307 maybe_print_eds("ed_bulkhead", ohci_readl(®s->ed_bulkhead));
308 maybe_print_eds("ed_bulkcurrent", ohci_readl(®s->ed_bulkcurrent));
310 maybe_print_eds("donehead", ohci_readl(®s->donehead));
313 static void ohci_dump_roothub(ohci_t *controller, int verbose)
317 temp = roothub_a(controller);
318 ndp = (temp & RH_A_NDP);
319 #ifdef CONFIG_AT91C_PQFP_UHPBUG
320 ndp = (ndp == 2) ? 1:0;
323 dbg("roothub.a: %08x POTPGT=%d%s%s%s%s%s NDP=%d", temp,
324 ((temp & RH_A_POTPGT) >> 24) & 0xff,
325 (temp & RH_A_NOCP) ? " NOCP" : "",
326 (temp & RH_A_OCPM) ? " OCPM" : "",
327 (temp & RH_A_DT) ? " DT" : "",
328 (temp & RH_A_NPS) ? " NPS" : "",
329 (temp & RH_A_PSM) ? " PSM" : "",
332 temp = roothub_b(controller);
333 dbg("roothub.b: %08x PPCM=%04x DR=%04x",
335 (temp & RH_B_PPCM) >> 16,
338 temp = roothub_status(controller);
339 dbg("roothub.status: %08x%s%s%s%s%s%s",
341 (temp & RH_HS_CRWE) ? " CRWE" : "",
342 (temp & RH_HS_OCIC) ? " OCIC" : "",
343 (temp & RH_HS_LPSC) ? " LPSC" : "",
344 (temp & RH_HS_DRWE) ? " DRWE" : "",
345 (temp & RH_HS_OCI) ? " OCI" : "",
346 (temp & RH_HS_LPS) ? " LPS" : ""
350 for (i = 0; i < ndp; i++) {
351 temp = roothub_portstatus(controller, i);
352 dbg("roothub.portstatus [%d] = 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s",
355 (temp & RH_PS_PRSC) ? " PRSC" : "",
356 (temp & RH_PS_OCIC) ? " OCIC" : "",
357 (temp & RH_PS_PSSC) ? " PSSC" : "",
358 (temp & RH_PS_PESC) ? " PESC" : "",
359 (temp & RH_PS_CSC) ? " CSC" : "",
361 (temp & RH_PS_LSDA) ? " LSDA" : "",
362 (temp & RH_PS_PPS) ? " PPS" : "",
363 (temp & RH_PS_PRS) ? " PRS" : "",
364 (temp & RH_PS_POCI) ? " POCI" : "",
365 (temp & RH_PS_PSS) ? " PSS" : "",
367 (temp & RH_PS_PES) ? " PES" : "",
368 (temp & RH_PS_CCS) ? " CCS" : ""
373 static void ohci_dump(ohci_t *controller, int verbose)
375 dbg("OHCI controller usb-%s state", controller->slot_name);
377 /* dumps some of the state we know about */
378 ohci_dump_status(controller);
380 ep_print_int_eds(controller, "hcca");
381 dbg("hcca frame #%04x", controller->hcca->frame_no);
382 ohci_dump_roothub(controller, 1);
386 /*-------------------------------------------------------------------------*
387 * Interface functions (URB)
388 *-------------------------------------------------------------------------*/
390 /* get a transfer request */
392 int sohci_submit_job(urb_priv_t *urb, struct devrequest *setup)
396 urb_priv_t *purb_priv = urb;
398 struct usb_device *dev = urb->dev;
399 unsigned long pipe = urb->pipe;
400 void *buffer = urb->transfer_buffer;
401 int transfer_len = urb->transfer_buffer_length;
402 int interval = urb->interval;
406 /* when controller's hung, permit only roothub cleanup attempts
407 * such as powering down ports */
408 if (ohci->disabled) {
409 err("sohci_submit_job: EPIPE");
413 /* we're about to begin a new transaction here so mark the
417 /* every endpoint has a ed, locate and fill it */
418 ed = ep_add_ed(dev, pipe, interval, 1);
420 err("sohci_submit_job: ENOMEM");
424 /* for the private part of the URB we need the number of TDs (size) */
425 switch (usb_pipetype(pipe)) {
426 case PIPE_BULK: /* one TD for every 4096 Byte */
427 size = (transfer_len - 1) / 4096 + 1;
429 case PIPE_CONTROL:/* 1 TD for setup, 1 for ACK and 1 for every 4096 B */
430 size = (transfer_len == 0)? 2:
431 (transfer_len - 1) / 4096 + 3;
433 case PIPE_INTERRUPT: /* 1 TD */
440 if (size >= (N_URB_TD - 1)) {
441 err("need %d TDs, only have %d", size, N_URB_TD);
444 purb_priv->pipe = pipe;
446 /* fill the private part of the URB */
447 purb_priv->length = size;
449 purb_priv->actual_length = 0;
451 /* allocate the TDs */
452 /* note that td[0] was allocated in ep_add_ed */
453 for (i = 0; i < size; i++) {
454 purb_priv->td[i] = td_alloc(dev);
455 if (!purb_priv->td[i]) {
456 purb_priv->length = i;
457 urb_free_priv(purb_priv);
458 err("sohci_submit_job: ENOMEM");
463 if (ed->state == ED_NEW || (ed->state & ED_DEL)) {
464 urb_free_priv(purb_priv);
465 err("sohci_submit_job: EINVAL");
469 /* link the ed into a chain if is not already */
470 if (ed->state != ED_OPER)
473 /* fill the TDs and link it to the ed */
474 td_submit_job(dev, pipe, buffer, transfer_len,
475 setup, purb_priv, interval);
480 static inline int sohci_return_job(struct ohci *hc, urb_priv_t *urb)
482 struct ohci_regs *regs = hc->regs;
484 switch (usb_pipetype(urb->pipe)) {
486 /* implicitly requeued */
487 if (urb->dev->irq_handle &&
488 (urb->dev->irq_act_len = urb->actual_length)) {
489 ohci_writel(OHCI_INTR_WDH, ®s->intrenable);
490 ohci_readl(®s->intrenable); /* PCI posting flush */
491 urb->dev->irq_handle(urb->dev);
492 ohci_writel(OHCI_INTR_WDH, ®s->intrdisable);
493 ohci_readl(®s->intrdisable); /* PCI posting flush */
495 urb->actual_length = 0;
499 urb->transfer_buffer,
500 urb->transfer_buffer_length,
514 /*-------------------------------------------------------------------------*/
517 /* tell us the current USB frame number */
519 static int sohci_get_current_frame_number(struct usb_device *usb_dev)
521 ohci_t *ohci = &gohci;
523 return m16_swap(ohci->hcca->frame_no);
527 /*-------------------------------------------------------------------------*
528 * ED handling functions
529 *-------------------------------------------------------------------------*/
531 /* search for the right branch to insert an interrupt ed into the int tree
532 * do some load ballancing;
533 * returns the branch and
534 * sets the interval to interval = 2^integer (ld (interval)) */
536 static int ep_int_ballance(ohci_t *ohci, int interval, int load)
540 /* search for the least loaded interrupt endpoint
541 * branch of all 32 branches
543 for (i = 0; i < 32; i++)
544 if (ohci->ohci_int_load [branch] > ohci->ohci_int_load [i])
547 branch = branch % interval;
548 for (i = branch; i < 32; i += interval)
549 ohci->ohci_int_load [i] += load;
554 /*-------------------------------------------------------------------------*/
556 /* 2^int( ld (inter)) */
558 static int ep_2_n_interval(int inter)
561 for (i = 0; ((inter >> i) > 1) && (i < 5); i++);
565 /*-------------------------------------------------------------------------*/
567 /* the int tree is a binary tree
568 * in order to process it sequentially the indexes of the branches have to
569 * be mapped the mapping reverses the bits of a word of num_bits length */
570 static int ep_rev(int num_bits, int word)
574 for (i = 0; i < num_bits; i++)
575 wout |= (((word >> i) & 1) << (num_bits - i - 1));
579 /*-------------------------------------------------------------------------*
580 * ED handling functions
581 *-------------------------------------------------------------------------*/
583 /* link an ed into one of the HC chains */
585 static int ep_link(ohci_t *ohci, ed_t *edi)
587 volatile ed_t *ed = edi;
596 ed->int_interval = 0;
601 if (ohci->ed_controltail == NULL)
602 ohci_writel(ed, &ohci->regs->ed_controlhead);
604 ohci->ed_controltail->hwNextED =
605 m32_swap((unsigned long)ed);
607 ed->ed_prev = ohci->ed_controltail;
608 if (!ohci->ed_controltail && !ohci->ed_rm_list[0] &&
609 !ohci->ed_rm_list[1] && !ohci->sleeping) {
610 ohci->hc_control |= OHCI_CTRL_CLE;
611 ohci_writel(ohci->hc_control, &ohci->regs->control);
613 ohci->ed_controltail = edi;
618 if (ohci->ed_bulktail == NULL)
619 ohci_writel(ed, &ohci->regs->ed_bulkhead);
621 ohci->ed_bulktail->hwNextED =
622 m32_swap((unsigned long)ed);
624 ed->ed_prev = ohci->ed_bulktail;
625 if (!ohci->ed_bulktail && !ohci->ed_rm_list[0] &&
626 !ohci->ed_rm_list[1] && !ohci->sleeping) {
627 ohci->hc_control |= OHCI_CTRL_BLE;
628 ohci_writel(ohci->hc_control, &ohci->regs->control);
630 ohci->ed_bulktail = edi;
635 interval = ep_2_n_interval(ed->int_period);
636 ed->int_interval = interval;
637 int_branch = ep_int_ballance(ohci, interval, load);
638 ed->int_branch = int_branch;
640 for (i = 0; i < ep_rev(6, interval); i += inter) {
642 for (ed_p = &(ohci->hcca->int_table[\
643 ep_rev(5, i) + int_branch]);
645 (((ed_t *)ed_p)->int_interval >= interval);
646 ed_p = &(((ed_t *)ed_p)->hwNextED))
648 ((ed_t *)ed_p)->int_interval);
649 ed->hwNextED = *ed_p;
650 *ed_p = m32_swap((unsigned long)ed);
657 /*-------------------------------------------------------------------------*/
659 /* scan the periodic table to find and unlink this ED */
660 static void periodic_unlink(struct ohci *ohci, volatile struct ed *ed,
661 unsigned index, unsigned period)
663 for (; index < NUM_INTS; index += period) {
664 __u32 *ed_p = &ohci->hcca->int_table [index];
666 /* ED might have been unlinked through another path */
669 m32_swap((unsigned long)ed_p)) == ed) {
670 *ed_p = ed->hwNextED;
673 ed_p = &(((struct ed *)
674 m32_swap((unsigned long)ed_p))->hwNextED);
679 /* unlink an ed from one of the HC chains.
680 * just the link to the ed is unlinked.
681 * the link from the ed still points to another operational ed or 0
682 * so the HC can eventually finish the processing of the unlinked ed */
684 static int ep_unlink(ohci_t *ohci, ed_t *edi)
686 volatile ed_t *ed = edi;
689 ed->hwINFO |= m32_swap(OHCI_ED_SKIP);
693 if (ed->ed_prev == NULL) {
695 ohci->hc_control &= ~OHCI_CTRL_CLE;
696 ohci_writel(ohci->hc_control,
697 &ohci->regs->control);
699 ohci_writel(m32_swap(*((__u32 *)&ed->hwNextED)),
700 &ohci->regs->ed_controlhead);
702 ed->ed_prev->hwNextED = ed->hwNextED;
704 if (ohci->ed_controltail == ed) {
705 ohci->ed_controltail = ed->ed_prev;
708 *((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
713 if (ed->ed_prev == NULL) {
715 ohci->hc_control &= ~OHCI_CTRL_BLE;
716 ohci_writel(ohci->hc_control,
717 &ohci->regs->control);
719 ohci_writel(m32_swap(*((__u32 *)&ed->hwNextED)),
720 &ohci->regs->ed_bulkhead);
722 ed->ed_prev->hwNextED = ed->hwNextED;
724 if (ohci->ed_bulktail == ed) {
725 ohci->ed_bulktail = ed->ed_prev;
728 *((__u32 *)&ed->hwNextED)))->ed_prev = ed->ed_prev;
733 periodic_unlink(ohci, ed, 0, 1);
734 for (i = ed->int_branch; i < 32; i += ed->int_interval)
735 ohci->ohci_int_load[i] -= ed->int_load;
738 ed->state = ED_UNLINK;
742 /*-------------------------------------------------------------------------*/
744 /* add/reinit an endpoint; this should be done once at the
745 * usb_set_configuration command, but the USB stack is a little bit
746 * stateless so we do it at every transaction if the state of the ed
747 * is ED_NEW then a dummy td is added and the state is changed to
748 * ED_UNLINK in all other cases the state is left unchanged the ed
749 * info fields are setted anyway even though most of them should not
752 static ed_t *ep_add_ed(struct usb_device *usb_dev, unsigned long pipe,
753 int interval, int load)
759 ed = ed_ret = &ohci_dev.ed[(usb_pipeendpoint(pipe) << 1) |
760 (usb_pipecontrol(pipe)? 0: usb_pipeout(pipe))];
762 if ((ed->state & ED_DEL) || (ed->state & ED_URB_DEL)) {
763 err("ep_add_ed: pending delete");
764 /* pending delete request */
768 if (ed->state == ED_NEW) {
769 /* dummy td; end of td list for ed */
770 td = td_alloc(usb_dev);
771 ed->hwTailP = m32_swap((unsigned long)td);
772 ed->hwHeadP = ed->hwTailP;
773 ed->state = ED_UNLINK;
774 ed->type = usb_pipetype(pipe);
778 ed->hwINFO = m32_swap(usb_pipedevice(pipe)
779 | usb_pipeendpoint(pipe) << 7
780 | (usb_pipeisoc(pipe)? 0x8000: 0)
781 | (usb_pipecontrol(pipe)? 0: \
782 (usb_pipeout(pipe)? 0x800: 0x1000))
783 | (usb_dev->speed == USB_SPEED_LOW) << 13
784 | usb_maxpacket(usb_dev, pipe) << 16);
786 if (ed->type == PIPE_INTERRUPT && ed->state == ED_UNLINK) {
787 ed->int_period = interval;
794 /*-------------------------------------------------------------------------*
795 * TD handling functions
796 *-------------------------------------------------------------------------*/
798 /* enqueue next TD for this URB (OHCI spec 5.2.8.2) */
800 static void td_fill(ohci_t *ohci, unsigned int info,
802 struct usb_device *dev, int index, urb_priv_t *urb_priv)
804 volatile td_t *td, *td_pt;
805 #ifdef OHCI_FILL_TRACE
809 if (index > urb_priv->length) {
810 err("index > length");
813 /* use this td as the next dummy */
814 td_pt = urb_priv->td [index];
817 /* fill the old dummy TD */
818 td = urb_priv->td [index] =
819 (td_t *)(m32_swap(urb_priv->ed->hwTailP) & ~0xf);
821 td->ed = urb_priv->ed;
822 td->next_dl_td = NULL;
824 td->data = (__u32)data;
825 #ifdef OHCI_FILL_TRACE
826 if (usb_pipebulk(urb_priv->pipe) && usb_pipeout(urb_priv->pipe)) {
827 for (i = 0; i < len; i++)
828 printf("td->data[%d] %#2x ", i, ((unsigned char *)td->data)[i]);
835 td->hwINFO = m32_swap(info);
836 td->hwCBP = m32_swap((unsigned long)data);
838 td->hwBE = m32_swap((unsigned long)(data + len - 1));
842 td->hwNextTD = m32_swap((unsigned long)td_pt);
844 /* append to queue */
845 td->ed->hwTailP = td->hwNextTD;
848 /*-------------------------------------------------------------------------*/
850 /* prepare all TDs of a transfer */
852 static void td_submit_job(struct usb_device *dev, unsigned long pipe,
853 void *buffer, int transfer_len,
854 struct devrequest *setup, urb_priv_t *urb,
857 ohci_t *ohci = &gohci;
858 int data_len = transfer_len;
862 unsigned int toggle = 0;
864 /* OHCI handles the DATA-toggles itself, we just use the USB-toggle
865 * bits for reseting */
866 if (usb_gettoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe))) {
867 toggle = TD_T_TOGGLE;
870 usb_settoggle(dev, usb_pipeendpoint(pipe),
871 usb_pipeout(pipe), 1);
879 switch (usb_pipetype(pipe)) {
881 info = usb_pipeout(pipe)?
882 TD_CC | TD_DP_OUT : TD_CC | TD_DP_IN ;
883 while (data_len > 4096) {
884 td_fill(ohci, info | (cnt? TD_T_TOGGLE:toggle),
885 data, 4096, dev, cnt, urb);
886 data += 4096; data_len -= 4096; cnt++;
888 info = usb_pipeout(pipe)?
889 TD_CC | TD_DP_OUT : TD_CC | TD_R | TD_DP_IN ;
890 td_fill(ohci, info | (cnt? TD_T_TOGGLE:toggle), data,
891 data_len, dev, cnt, urb);
894 if (!ohci->sleeping) {
895 /* start bulk list */
896 ohci_writel(OHCI_BLF, &ohci->regs->cmdstatus);
902 info = TD_CC | TD_DP_SETUP | TD_T_DATA0;
903 td_fill(ohci, info, setup, 8, dev, cnt++, urb);
905 /* Optional Data phase */
907 info = usb_pipeout(pipe)?
908 TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1 :
909 TD_CC | TD_R | TD_DP_IN | TD_T_DATA1;
910 /* NOTE: mishandles transfers >8K, some >4K */
911 td_fill(ohci, info, data, data_len, dev, cnt++, urb);
915 info = usb_pipeout(pipe)?
916 TD_CC | TD_DP_IN | TD_T_DATA1:
917 TD_CC | TD_DP_OUT | TD_T_DATA1;
918 td_fill(ohci, info, data, 0, dev, cnt++, urb);
920 if (!ohci->sleeping) {
921 /* start Control list */
922 ohci_writel(OHCI_CLF, &ohci->regs->cmdstatus);
927 info = usb_pipeout(urb->pipe)?
928 TD_CC | TD_DP_OUT | toggle:
929 TD_CC | TD_R | TD_DP_IN | toggle;
930 td_fill(ohci, info, data, data_len, dev, cnt++, urb);
933 if (urb->length != cnt)
934 dbg("TD LENGTH %d != CNT %d", urb->length, cnt);
937 /*-------------------------------------------------------------------------*
938 * Done List handling functions
939 *-------------------------------------------------------------------------*/
941 /* calculate the transfer length and update the urb */
943 static void dl_transfer_length(td_t *td)
946 urb_priv_t *lurb_priv = td->ed->purb;
948 tdBE = m32_swap(td->hwBE);
949 tdCBP = m32_swap(td->hwCBP);
951 if (!(usb_pipecontrol(lurb_priv->pipe) &&
952 ((td->index == 0) || (td->index == lurb_priv->length - 1)))) {
955 lurb_priv->actual_length += tdBE - td->data + 1;
957 lurb_priv->actual_length += tdCBP - td->data;
962 /*-------------------------------------------------------------------------*/
963 static void check_status(td_t *td_list)
965 urb_priv_t *lurb_priv = td_list->ed->purb;
966 int urb_len = lurb_priv->length;
967 __u32 *phwHeadP = &td_list->ed->hwHeadP;
970 cc = TD_CC_GET(m32_swap(td_list->hwINFO));
972 err(" USB-error: %s (%x)", cc_to_string[cc], cc);
974 if (*phwHeadP & m32_swap(0x1)) {
976 ((td_list->index + 1) < urb_len)) {
978 (lurb_priv->td[urb_len - 1]->hwNextTD &\
979 m32_swap(0xfffffff0)) |
980 (*phwHeadP & m32_swap(0x2));
982 lurb_priv->td_cnt += urb_len -
985 *phwHeadP &= m32_swap(0xfffffff2);
987 #ifdef CONFIG_MPC5200
988 td_list->hwNextTD = 0;
993 /* replies to the request have to be on a FIFO basis so
994 * we reverse the reversed done-list */
995 static td_t *dl_reverse_done_list(ohci_t *ohci)
999 td_t *td_list = NULL;
1001 td_list_hc = m32_swap(ohci->hcca->done_head) & 0xfffffff0;
1002 ohci->hcca->done_head = 0;
1004 while (td_list_hc) {
1005 td_list = (td_t *)td_list_hc;
1006 check_status(td_list);
1007 td_list->next_dl_td = td_rev;
1009 td_list_hc = m32_swap(td_list->hwNextTD) & 0xfffffff0;
1014 /*-------------------------------------------------------------------------*/
1015 /*-------------------------------------------------------------------------*/
1017 static void finish_urb(ohci_t *ohci, urb_priv_t *urb, int status)
1019 if ((status & (ED_OPER | ED_UNLINK)) && (urb->state != URB_DEL))
1020 urb->finished = sohci_return_job(ohci, urb);
1022 dbg("finish_urb: strange.., ED state %x, \n", status);
1026 * Used to take back a TD from the host controller. This would normally be
1027 * called from within dl_done_list, however it may be called directly if the
1028 * HC no longer sees the TD and it has not appeared on the donelist (after
1029 * two frames). This bug has been observed on ZF Micro systems.
1031 static int takeback_td(ohci_t *ohci, td_t *td_list)
1037 urb_priv_t *lurb_priv;
1038 __u32 tdINFO, edHeadP, edTailP;
1040 tdINFO = m32_swap(td_list->hwINFO);
1043 lurb_priv = ed->purb;
1045 dl_transfer_length(td_list);
1047 lurb_priv->td_cnt++;
1049 /* error code of transfer */
1050 cc = TD_CC_GET(tdINFO);
1052 err("USB-error: %s (%x)", cc_to_string[cc], cc);
1053 stat = cc_to_error[cc];
1056 /* see if this done list makes for all TD's of current URB,
1057 * and mark the URB finished if so */
1058 if (lurb_priv->td_cnt == lurb_priv->length)
1059 finish_urb(ohci, lurb_priv, ed->state);
1061 dbg("dl_done_list: processing TD %x, len %x\n",
1062 lurb_priv->td_cnt, lurb_priv->length);
1064 if (ed->state != ED_NEW && (!usb_pipeint(lurb_priv->pipe))) {
1065 edHeadP = m32_swap(ed->hwHeadP) & 0xfffffff0;
1066 edTailP = m32_swap(ed->hwTailP);
1068 /* unlink eds if they are not busy */
1069 if ((edHeadP == edTailP) && (ed->state == ED_OPER))
1070 ep_unlink(ohci, ed);
1075 static int dl_done_list(ohci_t *ohci)
1078 td_t *td_list = dl_reverse_done_list(ohci);
1081 td_t *td_next = td_list->next_dl_td;
1082 stat = takeback_td(ohci, td_list);
1088 /*-------------------------------------------------------------------------*
1090 *-------------------------------------------------------------------------*/
1092 #include <usbroothubdes.h>
1094 /* Hub class-specific descriptor is constructed dynamically */
1096 /*-------------------------------------------------------------------------*/
1098 #define OK(x) len = (x); break
1100 #define WR_RH_STAT(x) {info("WR:status %#8x", (x)); ohci_writel((x), \
1101 &gohci.regs->roothub.status); }
1102 #define WR_RH_PORTSTAT(x) {info("WR:portstatus[%d] %#8x", wIndex-1, \
1103 (x)); ohci_writel((x), &gohci.regs->roothub.portstatus[wIndex-1]); }
1105 #define WR_RH_STAT(x) ohci_writel((x), &gohci.regs->roothub.status)
1106 #define WR_RH_PORTSTAT(x) ohci_writel((x), \
1107 &gohci.regs->roothub.portstatus[wIndex-1])
1109 #define RD_RH_STAT roothub_status(&gohci)
1110 #define RD_RH_PORTSTAT roothub_portstatus(&gohci, wIndex-1)
1112 /* request to virtual root hub */
1114 int rh_check_port_status(ohci_t *controller)
1120 temp = roothub_a(controller);
1121 ndp = (temp & RH_A_NDP);
1122 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1123 ndp = (ndp == 2) ? 1:0;
1125 for (i = 0; i < ndp; i++) {
1126 temp = roothub_portstatus(controller, i);
1127 /* check for a device disconnect */
1128 if (((temp & (RH_PS_PESC | RH_PS_CSC)) ==
1129 (RH_PS_PESC | RH_PS_CSC)) &&
1130 ((temp & RH_PS_CCS) == 0)) {
1138 static int ohci_submit_rh_msg(struct usb_device *dev, unsigned long pipe,
1139 void *buffer, int transfer_len, struct devrequest *cmd)
1141 void *data = buffer;
1142 int leni = transfer_len;
1149 ALLOC_ALIGN_BUFFER(__u8, databuf, 16, sizeof(u32));
1152 pkt_print(NULL, dev, pipe, buffer, transfer_len,
1153 cmd, "SUB(rh)", usb_pipein(pipe));
1157 if (usb_pipeint(pipe)) {
1158 info("Root-Hub submit IRQ: NOT implemented");
1162 bmRType_bReq = cmd->requesttype | (cmd->request << 8);
1163 wValue = le16_to_cpu(cmd->value);
1164 wIndex = le16_to_cpu(cmd->index);
1165 wLength = le16_to_cpu(cmd->length);
1167 info("Root-Hub: adr: %2x cmd(%1x): %08x %04x %04x %04x",
1168 dev->devnum, 8, bmRType_bReq, wValue, wIndex, wLength);
1170 switch (bmRType_bReq) {
1171 /* Request Destination:
1172 without flags: Device,
1173 RH_INTERFACE: interface,
1174 RH_ENDPOINT: endpoint,
1175 RH_CLASS means HUB here,
1176 RH_OTHER | RH_CLASS almost ever means HUB_PORT here
1180 *(u16 *)databuf = cpu_to_le16(1);
1182 case RH_GET_STATUS | RH_INTERFACE:
1183 *(u16 *)databuf = cpu_to_le16(0);
1185 case RH_GET_STATUS | RH_ENDPOINT:
1186 *(u16 *)databuf = cpu_to_le16(0);
1188 case RH_GET_STATUS | RH_CLASS:
1189 *(u32 *)databuf = cpu_to_le32(
1190 RD_RH_STAT & ~(RH_HS_CRWE | RH_HS_DRWE));
1192 case RH_GET_STATUS | RH_OTHER | RH_CLASS:
1193 *(u32 *)databuf = cpu_to_le32(RD_RH_PORTSTAT);
1196 case RH_CLEAR_FEATURE | RH_ENDPOINT:
1198 case (RH_ENDPOINT_STALL):
1203 case RH_CLEAR_FEATURE | RH_CLASS:
1205 case RH_C_HUB_LOCAL_POWER:
1207 case (RH_C_HUB_OVER_CURRENT):
1208 WR_RH_STAT(RH_HS_OCIC);
1213 case RH_CLEAR_FEATURE | RH_OTHER | RH_CLASS:
1215 case (RH_PORT_ENABLE): WR_RH_PORTSTAT(RH_PS_CCS); OK(0);
1216 case (RH_PORT_SUSPEND): WR_RH_PORTSTAT(RH_PS_POCI); OK(0);
1217 case (RH_PORT_POWER): WR_RH_PORTSTAT(RH_PS_LSDA); OK(0);
1218 case (RH_C_PORT_CONNECTION): WR_RH_PORTSTAT(RH_PS_CSC); OK(0);
1219 case (RH_C_PORT_ENABLE): WR_RH_PORTSTAT(RH_PS_PESC); OK(0);
1220 case (RH_C_PORT_SUSPEND): WR_RH_PORTSTAT(RH_PS_PSSC); OK(0);
1221 case (RH_C_PORT_OVER_CURRENT):WR_RH_PORTSTAT(RH_PS_OCIC); OK(0);
1222 case (RH_C_PORT_RESET): WR_RH_PORTSTAT(RH_PS_PRSC); OK(0);
1226 case RH_SET_FEATURE | RH_OTHER | RH_CLASS:
1228 case (RH_PORT_SUSPEND):
1229 WR_RH_PORTSTAT(RH_PS_PSS); OK(0);
1230 case (RH_PORT_RESET): /* BUG IN HUP CODE *********/
1231 if (RD_RH_PORTSTAT & RH_PS_CCS)
1232 WR_RH_PORTSTAT(RH_PS_PRS);
1234 case (RH_PORT_POWER):
1235 WR_RH_PORTSTAT(RH_PS_PPS);
1238 case (RH_PORT_ENABLE): /* BUG IN HUP CODE *********/
1239 if (RD_RH_PORTSTAT & RH_PS_CCS)
1240 WR_RH_PORTSTAT(RH_PS_PES);
1245 case RH_SET_ADDRESS:
1246 gohci.rh.devnum = wValue;
1249 case RH_GET_DESCRIPTOR:
1250 switch ((wValue & 0xff00) >> 8) {
1251 case (0x01): /* device descriptor */
1252 len = min_t(unsigned int,
1255 sizeof(root_hub_dev_des),
1257 databuf = root_hub_dev_des; OK(len);
1258 case (0x02): /* configuration descriptor */
1259 len = min_t(unsigned int,
1262 sizeof(root_hub_config_des),
1264 databuf = root_hub_config_des; OK(len);
1265 case (0x03): /* string descriptors */
1266 if (wValue == 0x0300) {
1267 len = min_t(unsigned int,
1270 sizeof(root_hub_str_index0),
1272 databuf = root_hub_str_index0;
1275 if (wValue == 0x0301) {
1276 len = min_t(unsigned int,
1279 sizeof(root_hub_str_index1),
1281 databuf = root_hub_str_index1;
1285 stat = USB_ST_STALLED;
1289 case RH_GET_DESCRIPTOR | RH_CLASS:
1291 __u32 temp = roothub_a(&gohci);
1293 databuf[0] = 9; /* min length; */
1295 databuf[2] = temp & RH_A_NDP;
1296 #ifdef CONFIG_AT91C_PQFP_UHPBUG
1297 databuf[2] = (databuf[2] == 2) ? 1 : 0;
1300 if (temp & RH_A_PSM) /* per-port power switching? */
1302 if (temp & RH_A_NOCP) /* no overcurrent reporting? */
1304 else if (temp & RH_A_OCPM)/* per-port overcurrent reporting? */
1308 databuf[5] = (temp & RH_A_POTPGT) >> 24;
1310 temp = roothub_b(&gohci);
1311 databuf[7] = temp & RH_B_DR;
1312 if (databuf[2] < 7) {
1316 databuf[8] = (temp & RH_B_DR) >> 8;
1317 databuf[10] = databuf[9] = 0xff;
1320 len = min_t(unsigned int, leni,
1321 min_t(unsigned int, databuf[0], wLength));
1325 case RH_GET_CONFIGURATION:
1329 case RH_SET_CONFIGURATION:
1330 WR_RH_STAT(0x10000);
1334 dbg("unsupported root hub command");
1335 stat = USB_ST_STALLED;
1339 ohci_dump_roothub(&gohci, 1);
1344 len = min_t(int, len, leni);
1345 if (data != databuf)
1346 memcpy(data, databuf, len);
1351 pkt_print(NULL, dev, pipe, buffer,
1352 transfer_len, cmd, "RET(rh)", 0/*usb_pipein(pipe)*/);
1360 /*-------------------------------------------------------------------------*/
1362 /* common code for handling submit messages - used for all but root hub */
1364 int submit_common_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1365 int transfer_len, struct devrequest *setup, int interval)
1368 int maxsize = usb_maxpacket(dev, pipe);
1372 urb = malloc(sizeof(urb_priv_t));
1373 memset(urb, 0, sizeof(urb_priv_t));
1377 urb->transfer_buffer = buffer;
1378 urb->transfer_buffer_length = transfer_len;
1379 urb->interval = interval;
1382 urb->actual_length = 0;
1383 pkt_print(urb, dev, pipe, buffer, transfer_len,
1384 setup, "SUB", usb_pipein(pipe));
1389 err("submit_common_message: pipesize for pipe %lx is zero",
1394 if (sohci_submit_job(urb, setup) < 0) {
1395 err("sohci_submit_job failed");
1401 /* ohci_dump_status(&gohci); */
1404 timeout = USB_TIMEOUT_MS(pipe);
1406 /* wait for it to complete */
1408 /* check whether the controller is done */
1409 stat = hc_interrupt();
1411 stat = USB_ST_CRC_ERR;
1415 /* NOTE: since we are not interrupt driven in U-Boot and always
1416 * handle only one URB at a time, we cannot assume the
1417 * transaction finished on the first successful return from
1418 * hc_interrupt().. unless the flag for current URB is set,
1419 * meaning that all TD's to/from device got actually
1420 * transferred and processed. If the current URB is not
1421 * finished we need to re-iterate this loop so as
1422 * hc_interrupt() gets called again as there needs to be some
1423 * more TD's to process still */
1424 if ((stat >= 0) && (stat != 0xff) && (urb->finished)) {
1425 /* 0xff is returned for an SF-interrupt */
1435 err("CTL:TIMEOUT ");
1436 dbg("submit_common_msg: TO status %x\n", stat);
1438 stat = USB_ST_CRC_ERR;
1444 dev->act_len = urb->actual_length;
1447 pkt_print(urb, dev, pipe, buffer, transfer_len,
1448 setup, "RET(ctlr)", usb_pipein(pipe));
1453 /* free TDs in urb_priv */
1454 if (!usb_pipeint(pipe))
1459 /* submit routines called from usb.c */
1460 int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1463 info("submit_bulk_msg");
1464 return submit_common_msg(dev, pipe, buffer, transfer_len, NULL, 0);
1467 int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1468 int transfer_len, struct devrequest *setup)
1470 int maxsize = usb_maxpacket(dev, pipe);
1472 info("submit_control_msg");
1474 pkt_print(NULL, dev, pipe, buffer, transfer_len,
1475 setup, "SUB", usb_pipein(pipe));
1480 err("submit_control_message: pipesize for pipe %lx is zero",
1484 if (((pipe >> 8) & 0x7f) == gohci.rh.devnum) {
1486 /* root hub - redirect */
1487 return ohci_submit_rh_msg(dev, pipe, buffer, transfer_len,
1491 return submit_common_msg(dev, pipe, buffer, transfer_len, setup, 0);
1494 int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
1495 int transfer_len, int interval)
1497 info("submit_int_msg");
1498 return submit_common_msg(dev, pipe, buffer, transfer_len, NULL,
1502 /*-------------------------------------------------------------------------*
1504 *-------------------------------------------------------------------------*/
1506 /* reset the HC and BUS */
1508 static int hc_reset(ohci_t *ohci)
1510 #ifdef CONFIG_PCI_EHCI_DEVNO
1514 int smm_timeout = 50; /* 0,5 sec */
1516 dbg("%s\n", __FUNCTION__);
1518 #ifdef CONFIG_PCI_EHCI_DEVNO
1520 * Some multi-function controllers (e.g. ISP1562) allow root hub
1521 * resetting via EHCI registers only.
1523 pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVNO);
1528 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base);
1529 base += EHCI_USBCMD_OFF;
1530 ohci_writel(ohci_readl(base) | EHCI_USBCMD_HCRESET, base);
1532 while (ohci_readl(base) & EHCI_USBCMD_HCRESET) {
1533 if (timeout-- <= 0) {
1534 printf("USB RootHub reset timed out!");
1540 printf("No EHCI func at %d index!\n", CONFIG_PCI_EHCI_DEVNO);
1542 if (ohci_readl(&ohci->regs->control) & OHCI_CTRL_IR) {
1543 /* SMM owns the HC, request ownership */
1544 ohci_writel(OHCI_OCR, &ohci->regs->cmdstatus);
1545 info("USB HC TakeOver from SMM");
1546 while (ohci_readl(&ohci->regs->control) & OHCI_CTRL_IR) {
1548 if (--smm_timeout == 0) {
1549 err("USB HC TakeOver failed!");
1555 /* Disable HC interrupts */
1556 ohci_writel(OHCI_INTR_MIE, &ohci->regs->intrdisable);
1558 dbg("USB HC reset_hc usb-%s: ctrl = 0x%X ;\n",
1560 ohci_readl(&ohci->regs->control));
1562 /* Reset USB (needed by some controllers) */
1563 ohci->hc_control = 0;
1564 ohci_writel(ohci->hc_control, &ohci->regs->control);
1566 /* HC Reset requires max 10 us delay */
1567 ohci_writel(OHCI_HCR, &ohci->regs->cmdstatus);
1568 while ((ohci_readl(&ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
1569 if (--timeout == 0) {
1570 err("USB HC reset timed out!");
1578 /*-------------------------------------------------------------------------*/
1580 /* Start an OHCI controller, set the BUS operational
1582 * connect the virtual root hub */
1584 static int hc_start(ohci_t *ohci)
1587 unsigned int fminterval;
1591 /* Tell the controller where the control and bulk lists are
1592 * The lists are empty now. */
1594 ohci_writel(0, &ohci->regs->ed_controlhead);
1595 ohci_writel(0, &ohci->regs->ed_bulkhead);
1597 ohci_writel((__u32)ohci->hcca,
1598 &ohci->regs->hcca); /* reset clears this */
1600 fminterval = 0x2edf;
1601 ohci_writel((fminterval * 9) / 10, &ohci->regs->periodicstart);
1602 fminterval |= ((((fminterval - 210) * 6) / 7) << 16);
1603 ohci_writel(fminterval, &ohci->regs->fminterval);
1604 ohci_writel(0x628, &ohci->regs->lsthresh);
1606 /* start controller operations */
1607 ohci->hc_control = OHCI_CONTROL_INIT | OHCI_USB_OPER;
1609 ohci_writel(ohci->hc_control, &ohci->regs->control);
1611 /* disable all interrupts */
1612 mask = (OHCI_INTR_SO | OHCI_INTR_WDH | OHCI_INTR_SF | OHCI_INTR_RD |
1613 OHCI_INTR_UE | OHCI_INTR_FNO | OHCI_INTR_RHSC |
1614 OHCI_INTR_OC | OHCI_INTR_MIE);
1615 ohci_writel(mask, &ohci->regs->intrdisable);
1616 /* clear all interrupts */
1617 mask &= ~OHCI_INTR_MIE;
1618 ohci_writel(mask, &ohci->regs->intrstatus);
1619 /* Choose the interrupts we care about now - but w/o MIE */
1620 mask = OHCI_INTR_RHSC | OHCI_INTR_UE | OHCI_INTR_WDH | OHCI_INTR_SO;
1621 ohci_writel(mask, &ohci->regs->intrenable);
1624 /* required for AMD-756 and some Mac platforms */
1625 ohci_writel((roothub_a(ohci) | RH_A_NPS) & ~RH_A_PSM,
1626 &ohci->regs->roothub.a);
1627 ohci_writel(RH_HS_LPSC, &ohci->regs->roothub.status);
1628 #endif /* OHCI_USE_NPS */
1630 /* POTPGT delay is bits 24-31, in 2 ms units. */
1631 mdelay((roothub_a(ohci) >> 23) & 0x1fe);
1633 /* connect the virtual root hub */
1634 ohci->rh.devnum = 0;
1639 /*-------------------------------------------------------------------------*/
1641 /* an interrupt happens */
1643 static int hc_interrupt(void)
1645 ohci_t *ohci = &gohci;
1646 struct ohci_regs *regs = ohci->regs;
1650 if ((ohci->hcca->done_head != 0) &&
1651 !(m32_swap(ohci->hcca->done_head) & 0x01)) {
1652 ints = OHCI_INTR_WDH;
1654 ints = ohci_readl(®s->intrstatus);
1655 if (ints == ~(u32)0) {
1657 err("%s device removed!", ohci->slot_name);
1660 ints &= ohci_readl(®s->intrenable);
1662 dbg("hc_interrupt: returning..\n");
1668 /* dbg("Interrupt: %x frame: %x", ints,
1669 le16_to_cpu(ohci->hcca->frame_no)); */
1671 if (ints & OHCI_INTR_RHSC)
1674 if (ints & OHCI_INTR_UE) {
1676 err("OHCI Unrecoverable Error, controller usb-%s disabled",
1678 /* e.g. due to PCI Master/Target Abort */
1685 /* FIXME: be optimistic, hope that bug won't repeat often. */
1686 /* Make some non-interrupt context restart the controller. */
1687 /* Count and limit the retries though; either hardware or */
1688 /* software errors can go forever... */
1693 if (ints & OHCI_INTR_WDH) {
1695 ohci_writel(OHCI_INTR_WDH, ®s->intrdisable);
1696 (void)ohci_readl(®s->intrdisable); /* flush */
1697 stat = dl_done_list(&gohci);
1698 ohci_writel(OHCI_INTR_WDH, ®s->intrenable);
1699 (void)ohci_readl(®s->intrdisable); /* flush */
1702 if (ints & OHCI_INTR_SO) {
1703 dbg("USB Schedule overrun\n");
1704 ohci_writel(OHCI_INTR_SO, ®s->intrenable);
1708 /* FIXME: this assumes SOF (1/ms) interrupts don't get lost... */
1709 if (ints & OHCI_INTR_SF) {
1710 unsigned int frame = m16_swap(ohci->hcca->frame_no) & 1;
1712 ohci_writel(OHCI_INTR_SF, ®s->intrdisable);
1713 if (ohci->ed_rm_list[frame] != NULL)
1714 ohci_writel(OHCI_INTR_SF, ®s->intrenable);
1718 ohci_writel(ints, ®s->intrstatus);
1722 /*-------------------------------------------------------------------------*/
1724 /*-------------------------------------------------------------------------*/
1726 /* De-allocate all resources.. */
1728 static void hc_release_ohci(ohci_t *ohci)
1730 dbg("USB HC release ohci usb-%s", ohci->slot_name);
1732 if (!ohci->disabled)
1736 /*-------------------------------------------------------------------------*/
1739 * low level initalisation routine, called from usb.c
1741 static char ohci_inited = 0;
1743 int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
1745 #ifdef CONFIG_PCI_OHCI
1749 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT
1750 /* cpu dependant init */
1755 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT
1756 /* board dependant init */
1757 if (board_usb_init(index, USB_INIT_HOST))
1760 memset(&gohci, 0, sizeof(ohci_t));
1762 /* align the storage */
1763 if ((__u32)&ghcca[0] & 0xff) {
1764 err("HCCA not aligned!!");
1768 info("aligned ghcca %p", phcca);
1769 memset(&ohci_dev, 0, sizeof(struct ohci_device));
1770 if ((__u32)&ohci_dev.ed[0] & 0x7) {
1771 err("EDs not aligned!!");
1774 memset(gtd, 0, sizeof(td_t) * (NUM_TD + 1));
1775 if ((__u32)gtd & 0x7) {
1776 err("TDs not aligned!!");
1781 memset(phcca, 0, sizeof(struct ohci_hcca));
1786 #ifdef CONFIG_PCI_OHCI
1787 pdev = pci_find_devices(ohci_pci_ids, CONFIG_PCI_OHCI_DEVNO);
1792 pci_read_config_word(pdev, PCI_VENDOR_ID, &vid);
1793 pci_read_config_word(pdev, PCI_DEVICE_ID, &did);
1794 printf("OHCI pci controller (%04x, %04x) found @(%d:%d:%d)\n",
1795 vid, did, (pdev >> 16) & 0xff,
1796 (pdev >> 11) & 0x1f, (pdev >> 8) & 0x7);
1797 pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &base);
1798 printf("OHCI regs address 0x%08x\n", base);
1799 gohci.regs = (struct ohci_regs *)base;
1803 gohci.regs = (struct ohci_regs *)CONFIG_SYS_USB_OHCI_REGS_BASE;
1807 gohci.slot_name = CONFIG_SYS_USB_OHCI_SLOT_NAME;
1809 if (hc_reset (&gohci) < 0) {
1810 hc_release_ohci (&gohci);
1811 err ("can't reset usb-%s", gohci.slot_name);
1812 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT
1813 /* board dependant cleanup */
1814 board_usb_cleanup(index, USB_INIT_HOST);
1817 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT
1818 /* cpu dependant cleanup */
1819 usb_cpu_init_fail();
1824 if (hc_start(&gohci) < 0) {
1825 err("can't start usb-%s", gohci.slot_name);
1826 hc_release_ohci(&gohci);
1827 /* Initialization failed */
1828 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT
1829 /* board dependant cleanup */
1833 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT
1834 /* cpu dependant cleanup */
1841 ohci_dump(&gohci, 1);
1849 int usb_lowlevel_stop(int index)
1851 /* this gets called really early - before the controller has */
1852 /* even been initialized! */
1855 /* TODO release any interrupts, etc. */
1856 /* call hc_release_ohci() here ? */
1859 #ifdef CONFIG_SYS_USB_OHCI_BOARD_INIT
1860 /* board dependant cleanup */
1861 if (usb_board_stop())
1865 #ifdef CONFIG_SYS_USB_OHCI_CPU_INIT
1866 /* cpu dependant cleanup */
1870 /* This driver is no longer initialised. It needs a new low-level
1871 * init (board/cpu) before it can be used again. */