1 // SPDX-License-Identifier: GPL-2.0+
3 * Freescale QUICC Engine USB Host Controller Driver
5 * Copyright (c) Freescale Semicondutor, Inc. 2006, 2011.
6 * Shlomi Gridish <gridish@freescale.com>
7 * Jerry Huang <Chang-Ming.Huang@freescale.com>
8 * Copyright (c) Logic Product Development, Inc. 2007
9 * Peter Barada <peterb@logicpd.com>
10 * Copyright (c) MontaVista Software, Inc. 2008.
11 * Anton Vorontsov <avorontsov@ru.mvista.com>
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 #include <linux/spinlock.h>
17 #include <linux/delay.h>
18 #include <linux/errno.h>
19 #include <linux/list.h>
20 #include <linux/interrupt.h>
22 #include <linux/usb.h>
23 #include <linux/usb/hcd.h>
24 #include <soc/fsl/qe/qe.h>
25 #include <asm/fsl_gtm.h>
28 static void recycle_frame(struct fhci_usb *usb, struct packet *pkt)
32 pkt->status = USB_TD_OK;
34 pkt->priv_data = NULL;
36 cq_put(&usb->ep0->empty_frame_Q, pkt);
39 /* confirm submitted packet */
40 void fhci_transaction_confirm(struct fhci_usb *usb, struct packet *pkt)
43 struct packet *td_pkt;
48 td = fhci_remove_td_from_frame(usb->actual_frame);
51 td->status = pkt->status;
52 if (td->type == FHCI_TA_IN && td_pkt->info & PKT_DUMMY_PACKET) {
53 if ((td->data + td->actual_len) && trans_len)
54 memcpy(td->data + td->actual_len, pkt->data,
56 cq_put(&usb->ep0->dummy_packets_Q, pkt->data);
59 recycle_frame(usb, pkt);
62 if (ed->mode == FHCI_TF_ISO) {
63 if (ed->td_list.next->next != &ed->td_list) {
65 list_entry(ed->td_list.next->next, struct td,
68 td_next->start_frame = usb->actual_frame->frame_num;
70 td->actual_len = trans_len;
72 } else if ((td->status & USB_TD_ERROR) &&
73 !(td->status & USB_TD_TX_ER_NAK)) {
75 * There was an error on the transaction (but not NAK).
76 * If it is fatal error (data underrun, stall, bad pid or 3
77 * errors exceeded), mark this TD as done.
79 if ((td->status & USB_TD_RX_DATA_UNDERUN) ||
80 (td->status & USB_TD_TX_ER_STALL) ||
81 (td->status & USB_TD_RX_ER_PID) ||
82 (++td->error_cnt >= 3)) {
83 ed->state = FHCI_ED_HALTED;
86 if (td->status & USB_TD_RX_DATA_UNDERUN) {
87 fhci_dbg(usb->fhci, "td err fu\n");
88 td->toggle = !td->toggle;
89 td->actual_len += trans_len;
91 fhci_dbg(usb->fhci, "td err f!u\n");
94 fhci_dbg(usb->fhci, "td err !f\n");
95 /* it is not a fatal error -retry this transaction */
98 td->status = USB_TD_OK;
100 } else if (td->status & USB_TD_TX_ER_NAK) {
101 /* there was a NAK response */
102 fhci_vdbg(usb->fhci, "td nack\n");
105 td->status = USB_TD_OK;
107 /* there was no error on transaction */
110 td->toggle = !td->toggle;
111 td->actual_len += trans_len;
113 if (td->len == td->actual_len)
118 fhci_move_td_from_ed_to_done_list(usb, ed);
122 * Flush all transmitted packets from BDs
123 * This routine is called when disabling the USB port to flush all
124 * transmissions that are already scheduled in the BDs
126 void fhci_flush_all_transmissions(struct fhci_usb *usb)
131 mode = in_8(&usb->fhci->regs->usb_usmod);
132 clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_EN);
136 while ((td = fhci_peek_td_from_frame(usb->actual_frame)) != NULL) {
137 struct packet *pkt = td->pkt;
139 pkt->status = USB_TD_TX_ER_TIMEOUT;
140 fhci_transaction_confirm(usb, pkt);
143 usb->actual_frame->frame_status = FRAME_END_TRANSMISSION;
145 /* reset the event register */
146 out_be16(&usb->fhci->regs->usb_usber, 0xffff);
147 /* enable the USB controller */
148 out_8(&usb->fhci->regs->usb_usmod, mode | USB_MODE_EN);
152 * This function forms the packet and transmit the packet. This function
153 * will handle all endpoint type:ISO,interrupt,control and bulk
155 static int add_packet(struct fhci_usb *usb, struct ed *ed, struct td *td)
157 u32 fw_transaction_time, len = 0;
161 /* calcalate data address,len and toggle and then add the transaction */
162 if (td->toggle == USB_TD_TOGGLE_CARRY)
163 td->toggle = ed->toggle_carry;
168 if (td->type != FHCI_TA_IN)
173 len = min(td->len - td->actual_len, ed->max_pkt_size);
174 if (!((td->type == FHCI_TA_IN) &&
175 ((len + td->actual_len) == td->len)))
176 data = td->data + td->actual_len;
179 len = min(td->len, ed->max_pkt_size);
180 if (!((td->type == FHCI_TA_IN) &&
181 ((td->len + CRC_SIZE) >= ed->max_pkt_size)))
188 if (usb->port_status == FHCI_PORT_FULL)
189 fw_transaction_time = (((len + PROTOCOL_OVERHEAD) * 11) >> 4);
191 fw_transaction_time = ((len + PROTOCOL_OVERHEAD) * 6);
193 /* check if there's enough space in this frame to submit this TD */
194 if (usb->actual_frame->total_bytes + len + PROTOCOL_OVERHEAD >=
195 usb->max_bytes_per_frame) {
196 fhci_vdbg(usb->fhci, "not enough space in this frame: "
197 "%d %d %d\n", usb->actual_frame->total_bytes, len,
198 usb->max_bytes_per_frame);
202 /* check if there's enough time in this frame to submit this TD */
203 if (usb->actual_frame->frame_status != FRAME_IS_PREPARED &&
204 (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION ||
205 (fw_transaction_time + usb->sw_transaction_time >=
206 1000 - fhci_get_sof_timer_count(usb)))) {
207 fhci_dbg(usb->fhci, "not enough time in this frame\n");
211 /* update frame object fields before transmitting */
212 pkt = cq_get(&usb->ep0->empty_frame_Q);
214 fhci_dbg(usb->fhci, "there is no empty frame\n");
221 data = cq_get(&usb->ep0->dummy_packets_Q);
223 pkt->info = PKT_DUMMY_PACKET;
227 pkt->status = USB_TD_OK;
228 /* update TD status field before transmitting */
229 td->status = USB_TD_INPROGRESS;
230 /* update actual frame time object with the actual transmission */
231 usb->actual_frame->total_bytes += (len + PROTOCOL_OVERHEAD);
232 fhci_add_td_to_frame(usb->actual_frame, td);
234 if (usb->port_status != FHCI_PORT_FULL &&
235 usb->port_status != FHCI_PORT_LOW) {
236 pkt->status = USB_TD_TX_ER_TIMEOUT;
238 fhci_transaction_confirm(usb, pkt);
239 } else if (fhci_host_transaction(usb, pkt, td->type, ed->dev_addr,
240 ed->ep_addr, ed->mode, ed->speed, td->toggle)) {
241 /* remove TD from actual frame */
242 list_del_init(&td->frame_lh);
243 td->status = USB_TD_OK;
244 if (pkt->info & PKT_DUMMY_PACKET)
245 cq_put(&usb->ep0->dummy_packets_Q, pkt->data);
246 recycle_frame(usb, pkt);
247 usb->actual_frame->total_bytes -= (len + PROTOCOL_OVERHEAD);
248 fhci_err(usb->fhci, "host transaction failed\n");
255 static void move_head_to_tail(struct list_head *list)
257 struct list_head *node = list->next;
259 if (!list_empty(list)) {
260 list_move_tail(node, list);
265 * This function goes through the endpoint list and schedules the
266 * transactions within this list
268 static int scan_ed_list(struct fhci_usb *usb,
269 struct list_head *list, enum fhci_tf_mode list_type)
271 static const int frame_part[4] = {
272 [FHCI_TF_CTRL] = MAX_BYTES_PER_FRAME,
273 [FHCI_TF_ISO] = (MAX_BYTES_PER_FRAME *
274 MAX_PERIODIC_FRAME_USAGE) / 100,
275 [FHCI_TF_BULK] = MAX_BYTES_PER_FRAME,
276 [FHCI_TF_INTR] = (MAX_BYTES_PER_FRAME *
277 MAX_PERIODIC_FRAME_USAGE) / 100
282 u32 save_transaction_time = usb->sw_transaction_time;
284 list_for_each_entry(ed, list, node) {
287 if (!td || td->status == USB_TD_INPROGRESS)
290 if (ed->state != FHCI_ED_OPER) {
291 if (ed->state == FHCI_ED_URB_DEL) {
292 td->status = USB_TD_OK;
293 fhci_move_td_from_ed_to_done_list(usb, ed);
294 ed->state = FHCI_ED_SKIP;
300 * if it isn't interrupt pipe or it is not iso pipe and the
301 * interval time passed
303 if ((list_type == FHCI_TF_INTR || list_type == FHCI_TF_ISO) &&
304 (((usb->actual_frame->frame_num -
305 td->start_frame) & 0x7ff) < td->interval))
308 if (add_packet(usb, ed, td) < 0)
311 /* update time stamps in the TD */
312 td->start_frame = usb->actual_frame->frame_num;
313 usb->sw_transaction_time += save_transaction_time;
315 if (usb->actual_frame->total_bytes >=
316 usb->max_bytes_per_frame) {
317 usb->actual_frame->frame_status =
318 FRAME_DATA_END_TRANSMISSION;
319 fhci_push_dummy_bd(usb->ep0);
324 if (usb->actual_frame->total_bytes >= frame_part[list_type])
328 /* be fair to each ED(move list head around) */
329 move_head_to_tail(list);
330 usb->sw_transaction_time = save_transaction_time;
335 static u32 rotate_frames(struct fhci_usb *usb)
337 struct fhci_hcd *fhci = usb->fhci;
339 if (!list_empty(&usb->actual_frame->tds_list)) {
340 if ((((in_be16(&fhci->pram->frame_num) & 0x07ff) -
341 usb->actual_frame->frame_num) & 0x7ff) > 5)
342 fhci_flush_actual_frame(usb);
347 usb->actual_frame->frame_status = FRAME_IS_PREPARED;
348 usb->actual_frame->frame_num = in_be16(&fhci->pram->frame_num) & 0x7ff;
349 usb->actual_frame->total_bytes = 0;
355 * This function schedule the USB transaction and will process the
356 * endpoint in the following order: iso, interrupt, control and bulk.
358 void fhci_schedule_transactions(struct fhci_usb *usb)
362 if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
363 if (rotate_frames(usb) != 0)
366 if (usb->actual_frame->frame_status & FRAME_END_TRANSMISSION)
369 if (usb->actual_frame->total_bytes == 0) {
371 * schedule the next available ISO transfer
372 *or next stage of the ISO transfer
374 scan_ed_list(usb, &usb->hc_list->iso_list, FHCI_TF_ISO);
377 * schedule the next available interrupt transfer or
378 * the next stage of the interrupt transfer
380 scan_ed_list(usb, &usb->hc_list->intr_list, FHCI_TF_INTR);
383 * schedule the next available control transfer
384 * or the next stage of the control transfer
386 left = scan_ed_list(usb, &usb->hc_list->ctrl_list,
391 * schedule the next available bulk transfer or the next stage of the
395 scan_ed_list(usb, &usb->hc_list->bulk_list, FHCI_TF_BULK);
398 /* Handles SOF interrupt */
399 static void sof_interrupt(struct fhci_hcd *fhci)
401 struct fhci_usb *usb = fhci->usb_lld;
403 if ((usb->port_status == FHCI_PORT_DISABLED) &&
404 (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_CONNECTION) &&
405 !(usb->vroot_hub->port.wPortChange & USB_PORT_STAT_C_CONNECTION)) {
406 if (usb->vroot_hub->port.wPortStatus & USB_PORT_STAT_LOW_SPEED)
407 usb->port_status = FHCI_PORT_LOW;
409 usb->port_status = FHCI_PORT_FULL;
411 usb->saved_msk &= ~USB_E_IDLE_MASK;
412 out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
415 gtm_set_exact_timer16(fhci->timer, usb->max_frame_usage, false);
417 fhci_host_transmit_actual_frame(usb);
418 usb->actual_frame->frame_status = FRAME_IS_TRANSMITTED;
420 fhci_schedule_transactions(usb);
423 /* Handles device disconnected interrupt on port */
424 void fhci_device_disconnected_interrupt(struct fhci_hcd *fhci)
426 struct fhci_usb *usb = fhci->usb_lld;
428 fhci_dbg(fhci, "-> %s\n", __func__);
430 fhci_usb_disable_interrupt(usb);
431 clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
432 usb->port_status = FHCI_PORT_DISABLED;
434 fhci_stop_sof_timer(fhci);
436 /* Enable IDLE since we want to know if something comes along */
437 usb->saved_msk |= USB_E_IDLE_MASK;
438 out_be16(&usb->fhci->regs->usb_usbmr, usb->saved_msk);
440 usb->vroot_hub->port.wPortStatus &= ~USB_PORT_STAT_CONNECTION;
441 usb->vroot_hub->port.wPortChange |= USB_PORT_STAT_C_CONNECTION;
442 usb->max_bytes_per_frame = 0;
443 fhci_usb_enable_interrupt(usb);
445 fhci_dbg(fhci, "<- %s\n", __func__);
448 /* detect a new device connected on the USB port */
449 void fhci_device_connected_interrupt(struct fhci_hcd *fhci)
452 struct fhci_usb *usb = fhci->usb_lld;
456 fhci_dbg(fhci, "-> %s\n", __func__);
458 fhci_usb_disable_interrupt(usb);
459 state = fhci_ioports_check_bus_state(fhci);
461 /* low-speed device was connected to the USB port */
463 ret = qe_usb_clock_set(fhci->lowspeed_clk, USB_CLOCK >> 3);
465 fhci_warn(fhci, "Low-Speed device is not supported, "
470 usb->port_status = FHCI_PORT_LOW;
471 setbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
472 usb->vroot_hub->port.wPortStatus |=
473 (USB_PORT_STAT_LOW_SPEED |
474 USB_PORT_STAT_CONNECTION);
475 usb->vroot_hub->port.wPortChange |=
476 USB_PORT_STAT_C_CONNECTION;
477 usb->max_bytes_per_frame =
478 (MAX_BYTES_PER_FRAME >> 3) - 7;
479 fhci_port_enable(usb);
480 } else if (state == 2) {
481 ret = qe_usb_clock_set(fhci->fullspeed_clk, USB_CLOCK);
483 fhci_warn(fhci, "Full-Speed device is not supported, "
488 usb->port_status = FHCI_PORT_FULL;
489 clrbits8(&usb->fhci->regs->usb_usmod, USB_MODE_LSS);
490 usb->vroot_hub->port.wPortStatus &=
491 ~USB_PORT_STAT_LOW_SPEED;
492 usb->vroot_hub->port.wPortStatus |=
493 USB_PORT_STAT_CONNECTION;
494 usb->vroot_hub->port.wPortChange |=
495 USB_PORT_STAT_C_CONNECTION;
496 usb->max_bytes_per_frame = (MAX_BYTES_PER_FRAME - 15);
497 fhci_port_enable(usb);
500 fhci_usb_enable_interrupt(usb);
501 fhci_dbg(fhci, "<- %s\n", __func__);
504 irqreturn_t fhci_frame_limit_timer_irq(int irq, void *_hcd)
506 struct usb_hcd *hcd = _hcd;
507 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
508 struct fhci_usb *usb = fhci->usb_lld;
510 spin_lock(&fhci->lock);
512 gtm_set_exact_timer16(fhci->timer, 1000, false);
514 if (usb->actual_frame->frame_status == FRAME_IS_TRANSMITTED) {
515 usb->actual_frame->frame_status = FRAME_TIMER_END_TRANSMISSION;
516 fhci_push_dummy_bd(usb->ep0);
519 fhci_schedule_transactions(usb);
521 spin_unlock(&fhci->lock);
526 /* Cancel transmission on the USB endpoint */
527 static void abort_transmission(struct fhci_usb *usb)
529 fhci_dbg(usb->fhci, "-> %s\n", __func__);
530 /* issue stop Tx command */
531 qe_issue_cmd(QE_USB_STOP_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0);
533 out_8(&usb->fhci->regs->usb_uscom, USB_CMD_FLUSH_FIFO | EP_ZERO);
537 /* issue restart Tx command */
538 qe_issue_cmd(QE_USB_RESTART_TX, QE_CR_SUBBLOCK_USB, EP_ZERO, 0);
539 fhci_dbg(usb->fhci, "<- %s\n", __func__);
542 irqreturn_t fhci_irq(struct usb_hcd *hcd)
544 struct fhci_hcd *fhci = hcd_to_fhci(hcd);
545 struct fhci_usb *usb;
549 spin_lock_irqsave(&fhci->lock, flags);
553 usb_er |= in_be16(&usb->fhci->regs->usb_usber) &
554 in_be16(&usb->fhci->regs->usb_usbmr);
556 /* clear event bits for next time */
557 out_be16(&usb->fhci->regs->usb_usber, usb_er);
559 fhci_dbg_isr(fhci, usb_er);
561 if (usb_er & USB_E_RESET_MASK) {
562 if ((usb->port_status == FHCI_PORT_FULL) ||
563 (usb->port_status == FHCI_PORT_LOW)) {
564 fhci_device_disconnected_interrupt(fhci);
565 usb_er &= ~USB_E_IDLE_MASK;
566 } else if (usb->port_status == FHCI_PORT_WAITING) {
567 usb->port_status = FHCI_PORT_DISCONNECTING;
569 /* Turn on IDLE since we want to disconnect */
570 usb->saved_msk |= USB_E_IDLE_MASK;
571 out_be16(&usb->fhci->regs->usb_usber,
573 } else if (usb->port_status == FHCI_PORT_DISABLED) {
574 if (fhci_ioports_check_bus_state(fhci) == 1)
575 fhci_device_connected_interrupt(fhci);
577 usb_er &= ~USB_E_RESET_MASK;
580 if (usb_er & USB_E_MSF_MASK) {
581 abort_transmission(fhci->usb_lld);
582 usb_er &= ~USB_E_MSF_MASK;
585 if (usb_er & (USB_E_SOF_MASK | USB_E_SFT_MASK)) {
587 usb_er &= ~(USB_E_SOF_MASK | USB_E_SFT_MASK);
590 if (usb_er & USB_E_TXB_MASK) {
591 fhci_tx_conf_interrupt(fhci->usb_lld);
592 usb_er &= ~USB_E_TXB_MASK;
595 if (usb_er & USB_E_TXE1_MASK) {
596 fhci_tx_conf_interrupt(fhci->usb_lld);
597 usb_er &= ~USB_E_TXE1_MASK;
600 if (usb_er & USB_E_IDLE_MASK) {
601 if (usb->port_status == FHCI_PORT_DISABLED) {
602 usb_er &= ~USB_E_RESET_MASK;
603 fhci_device_connected_interrupt(fhci);
604 } else if (usb->port_status ==
605 FHCI_PORT_DISCONNECTING) {
606 /* XXX usb->port_status = FHCI_PORT_WAITING; */
608 usb->saved_msk &= ~USB_E_IDLE_MASK;
609 out_be16(&usb->fhci->regs->usb_usbmr,
612 fhci_dbg_isr(fhci, -1);
615 usb_er &= ~USB_E_IDLE_MASK;
618 spin_unlock_irqrestore(&fhci->lock, flags);
625 * Process normal completions(error or success) and clean the schedule.
627 * This is the main path for handing urbs back to drivers. The only other patth
628 * is process_del_list(),which unlinks URBs by scanning EDs,instead of scanning
629 * the (re-reversed) done list as this does.
631 static void process_done_list(unsigned long data)
636 struct urb_priv *urb_priv;
637 struct fhci_hcd *fhci = (struct fhci_hcd *)data;
639 disable_irq(fhci->timer->irq);
640 disable_irq(fhci_to_hcd(fhci)->irq);
641 spin_lock(&fhci->lock);
643 td = fhci_remove_td_from_done_list(fhci->hc_list);
646 urb_priv = urb->hcpriv;
649 /* update URB's length and status from TD */
650 fhci_done_td(urb, td);
654 * if all this urb's TDs are done, call complete()
655 * Interrupt transfers are the onley special case:
656 * they are reissued,until "deleted" by usb_unlink_urb
657 * (real work done in a SOF intr, by process_del_list)
659 if (urb_priv->tds_cnt == urb_priv->num_of_tds) {
660 fhci_urb_complete_free(fhci, urb);
661 } else if (urb_priv->state == URB_DEL &&
662 ed->state == FHCI_ED_SKIP) {
663 fhci_del_ed_list(fhci, ed);
664 ed->state = FHCI_ED_OPER;
665 } else if (ed->state == FHCI_ED_HALTED) {
666 urb_priv->state = URB_DEL;
667 ed->state = FHCI_ED_URB_DEL;
668 fhci_del_ed_list(fhci, ed);
669 ed->state = FHCI_ED_OPER;
672 td = fhci_remove_td_from_done_list(fhci->hc_list);
675 spin_unlock(&fhci->lock);
676 enable_irq(fhci->timer->irq);
677 enable_irq(fhci_to_hcd(fhci)->irq);
680 DECLARE_TASKLET_OLD(fhci_tasklet, process_done_list);
682 /* transfer complted callback */
683 u32 fhci_transfer_confirm_callback(struct fhci_hcd *fhci)
685 if (!fhci->process_done_task->state)
686 tasklet_schedule(fhci->process_done_task);
691 * adds urb to the endpoint descriptor list
693 * fhci data structure for the Low level host controller
694 * ep USB Host endpoint data structure
695 * urb USB request block data structure
697 void fhci_queue_urb(struct fhci_hcd *fhci, struct urb *urb)
699 struct ed *ed = urb->ep->hcpriv;
700 struct urb_priv *urb_priv = urb->hcpriv;
701 u32 data_len = urb->transfer_buffer_length;
708 ed = fhci_get_empty_ed(fhci);
709 ed->dev_addr = usb_pipedevice(urb->pipe);
710 ed->ep_addr = usb_pipeendpoint(urb->pipe);
711 switch (usb_pipetype(urb->pipe)) {
713 ed->mode = FHCI_TF_CTRL;
716 ed->mode = FHCI_TF_BULK;
719 ed->mode = FHCI_TF_INTR;
721 case PIPE_ISOCHRONOUS:
722 ed->mode = FHCI_TF_ISO;
727 ed->speed = (urb->dev->speed == USB_SPEED_LOW) ?
728 FHCI_LOW_SPEED : FHCI_FULL_SPEED;
729 ed->max_pkt_size = usb_endpoint_maxp(&urb->ep->desc);
730 urb->ep->hcpriv = ed;
731 fhci_dbg(fhci, "new ep speed=%d max_pkt_size=%d\n",
732 ed->speed, ed->max_pkt_size);
735 /* for ISO transfer calculate start frame index */
736 if (ed->mode == FHCI_TF_ISO) {
737 /* Ignore the possibility of underruns */
738 urb->start_frame = ed->td_head ? ed->next_iso :
740 ed->next_iso = (urb->start_frame + urb->interval *
741 urb->number_of_packets) & 0x07ff;
745 * OHCI handles the DATA toggle itself,we just use the USB
748 if (usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
749 usb_pipeout(urb->pipe)))
750 toggle = USB_TD_TOGGLE_CARRY;
752 toggle = USB_TD_TOGGLE_DATA0;
753 usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
754 usb_pipeout(urb->pipe), 1);
757 urb_priv->tds_cnt = 0;
760 data = urb->transfer_buffer;
766 if (urb->transfer_flags & URB_ZERO_PACKET &&
767 urb->transfer_buffer_length > 0 &&
768 ((urb->transfer_buffer_length %
769 usb_endpoint_maxp(&urb->ep->desc)) == 0))
770 urb_state = US_BULK0;
771 while (data_len > 4096) {
772 fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
773 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
775 cnt ? USB_TD_TOGGLE_CARRY :
777 data, 4096, 0, 0, true);
783 fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
784 usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
785 cnt ? USB_TD_TOGGLE_CARRY : toggle,
786 data, data_len, 0, 0, true);
789 if (urb->transfer_flags & URB_ZERO_PACKET &&
790 cnt < urb_priv->num_of_tds) {
791 fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
792 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
794 USB_TD_TOGGLE_CARRY, NULL, 0, 0, 0, true);
799 urb->start_frame = get_frame_num(fhci) + 1;
800 fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
801 usb_pipeout(urb->pipe) ? FHCI_TA_OUT : FHCI_TA_IN,
802 USB_TD_TOGGLE_DATA0, data, data_len,
803 urb->interval, urb->start_frame, true);
806 ed->dev_addr = usb_pipedevice(urb->pipe);
807 ed->max_pkt_size = usb_endpoint_maxp(&urb->ep->desc);
810 fhci_td_fill(fhci, urb, urb_priv, ed, cnt++, FHCI_TA_SETUP,
811 USB_TD_TOGGLE_DATA0, urb->setup_packet, 8, 0, 0, true);
815 fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
816 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
818 USB_TD_TOGGLE_DATA1, data, data_len, 0, 0,
824 fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
825 (usb_pipeout(urb->pipe) ? FHCI_TA_IN :
827 USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
829 fhci_td_fill(fhci, urb, urb_priv, ed, cnt++,
831 USB_TD_TOGGLE_DATA1, data, 0, 0, 0, true);
833 urb_state = US_CTRL_SETUP;
836 for (cnt = 0; cnt < urb->number_of_packets; cnt++) {
837 u16 frame = urb->start_frame;
840 * FIXME scheduling should handle frame counter
841 * roll-around ... exotic case (and OHCI has
842 * a 2^16 iso range, vs other HCs max of 2^10)
844 frame += cnt * urb->interval;
846 fhci_td_fill(fhci, urb, urb_priv, ed, cnt,
847 usb_pipeout(urb->pipe) ? FHCI_TA_OUT :
850 data + urb->iso_frame_desc[cnt].offset,
851 urb->iso_frame_desc[cnt].length,
852 urb->interval, frame, true);
860 * set the state of URB
861 * control pipe:3 states -- setup,data,status
862 * interrupt and bulk pipe:1 state -- data
865 urb->pipe |= urb_state & 0x1f;
867 urb_priv->state = URB_INPROGRESS;
870 ed->state = FHCI_ED_OPER;
873 list_add(&ed->node, &fhci->hc_list->ctrl_list);
876 list_add(&ed->node, &fhci->hc_list->bulk_list);
879 list_add(&ed->node, &fhci->hc_list->intr_list);
882 list_add(&ed->node, &fhci->hc_list->iso_list);
889 fhci_add_tds_to_ed(ed, urb_priv->tds, urb_priv->num_of_tds);