27729aadd3
The usbcore headers: hcd.h and hub.h are shared between usbcore, HCDs and a couple of other drivers (e.g. USBIP modules). So, it makes sense to move them into a more public location and to cleanup dependency of those modules on kernel internal headers. This patch moves hcd.h from drivers/usb/core into include/linux/usb/ Signed-of-by: Eric Lescouet <eric@lescouet.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
285 lines
6.9 KiB
C
285 lines
6.9 KiB
C
/*
|
|
* Freescale QUICC Engine USB Host Controller Driver
|
|
*
|
|
* Copyright (c) Freescale Semicondutor, Inc. 2006.
|
|
* Shlomi Gridish <gridish@freescale.com>
|
|
* Jerry Huang <Chang-Ming.Huang@freescale.com>
|
|
* Copyright (c) Logic Product Development, Inc. 2007
|
|
* Peter Barada <peterb@logicpd.com>
|
|
* Copyright (c) MontaVista Software, Inc. 2008.
|
|
* Anton Vorontsov <avorontsov@ru.mvista.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/list.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/usb/hcd.h>
|
|
#include "fhci.h"
|
|
|
|
/* maps the hardware error code to the USB error code */
|
|
static int status_to_error(u32 status)
|
|
{
|
|
if (status == USB_TD_OK)
|
|
return 0;
|
|
else if (status & USB_TD_RX_ER_CRC)
|
|
return -EILSEQ;
|
|
else if (status & USB_TD_RX_ER_NONOCT)
|
|
return -EPROTO;
|
|
else if (status & USB_TD_RX_ER_OVERUN)
|
|
return -ECOMM;
|
|
else if (status & USB_TD_RX_ER_BITSTUFF)
|
|
return -EPROTO;
|
|
else if (status & USB_TD_RX_ER_PID)
|
|
return -EILSEQ;
|
|
else if (status & (USB_TD_TX_ER_NAK | USB_TD_TX_ER_TIMEOUT))
|
|
return -ETIMEDOUT;
|
|
else if (status & USB_TD_TX_ER_STALL)
|
|
return -EPIPE;
|
|
else if (status & USB_TD_TX_ER_UNDERUN)
|
|
return -ENOSR;
|
|
else if (status & USB_TD_RX_DATA_UNDERUN)
|
|
return -EREMOTEIO;
|
|
else if (status & USB_TD_RX_DATA_OVERUN)
|
|
return -EOVERFLOW;
|
|
else
|
|
return -EINVAL;
|
|
}
|
|
|
|
void fhci_add_td_to_frame(struct fhci_time_frame *frame, struct td *td)
|
|
{
|
|
list_add_tail(&td->frame_lh, &frame->tds_list);
|
|
}
|
|
|
|
void fhci_add_tds_to_ed(struct ed *ed, struct td **td_list, int number)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < number; i++) {
|
|
struct td *td = td_list[i];
|
|
list_add_tail(&td->node, &ed->td_list);
|
|
}
|
|
if (ed->td_head == NULL)
|
|
ed->td_head = td_list[0];
|
|
}
|
|
|
|
static struct td *peek_td_from_ed(struct ed *ed)
|
|
{
|
|
struct td *td;
|
|
|
|
if (!list_empty(&ed->td_list))
|
|
td = list_entry(ed->td_list.next, struct td, node);
|
|
else
|
|
td = NULL;
|
|
|
|
return td;
|
|
}
|
|
|
|
struct td *fhci_remove_td_from_frame(struct fhci_time_frame *frame)
|
|
{
|
|
struct td *td;
|
|
|
|
if (!list_empty(&frame->tds_list)) {
|
|
td = list_entry(frame->tds_list.next, struct td, frame_lh);
|
|
list_del_init(frame->tds_list.next);
|
|
} else
|
|
td = NULL;
|
|
|
|
return td;
|
|
}
|
|
|
|
struct td *fhci_peek_td_from_frame(struct fhci_time_frame *frame)
|
|
{
|
|
struct td *td;
|
|
|
|
if (!list_empty(&frame->tds_list))
|
|
td = list_entry(frame->tds_list.next, struct td, frame_lh);
|
|
else
|
|
td = NULL;
|
|
|
|
return td;
|
|
}
|
|
|
|
struct td *fhci_remove_td_from_ed(struct ed *ed)
|
|
{
|
|
struct td *td;
|
|
|
|
if (!list_empty(&ed->td_list)) {
|
|
td = list_entry(ed->td_list.next, struct td, node);
|
|
list_del_init(ed->td_list.next);
|
|
|
|
/* if this TD was the ED's head, find next TD */
|
|
if (!list_empty(&ed->td_list))
|
|
ed->td_head = list_entry(ed->td_list.next, struct td,
|
|
node);
|
|
else
|
|
ed->td_head = NULL;
|
|
} else
|
|
td = NULL;
|
|
|
|
return td;
|
|
}
|
|
|
|
struct td *fhci_remove_td_from_done_list(struct fhci_controller_list *p_list)
|
|
{
|
|
struct td *td;
|
|
|
|
if (!list_empty(&p_list->done_list)) {
|
|
td = list_entry(p_list->done_list.next, struct td, node);
|
|
list_del_init(p_list->done_list.next);
|
|
} else
|
|
td = NULL;
|
|
|
|
return td;
|
|
}
|
|
|
|
void fhci_move_td_from_ed_to_done_list(struct fhci_usb *usb, struct ed *ed)
|
|
{
|
|
struct td *td;
|
|
|
|
td = ed->td_head;
|
|
list_del_init(&td->node);
|
|
|
|
/* If this TD was the ED's head,find next TD */
|
|
if (!list_empty(&ed->td_list))
|
|
ed->td_head = list_entry(ed->td_list.next, struct td, node);
|
|
else {
|
|
ed->td_head = NULL;
|
|
ed->state = FHCI_ED_SKIP;
|
|
}
|
|
ed->toggle_carry = td->toggle;
|
|
list_add_tail(&td->node, &usb->hc_list->done_list);
|
|
if (td->ioc)
|
|
usb->transfer_confirm(usb->fhci);
|
|
}
|
|
|
|
/* free done FHCI URB resource such as ED and TD */
|
|
static void free_urb_priv(struct fhci_hcd *fhci, struct urb *urb)
|
|
{
|
|
int i;
|
|
struct urb_priv *urb_priv = urb->hcpriv;
|
|
struct ed *ed = urb_priv->ed;
|
|
|
|
for (i = 0; i < urb_priv->num_of_tds; i++) {
|
|
list_del_init(&urb_priv->tds[i]->node);
|
|
fhci_recycle_empty_td(fhci, urb_priv->tds[i]);
|
|
}
|
|
|
|
/* if this TD was the ED's head,find the next TD */
|
|
if (!list_empty(&ed->td_list))
|
|
ed->td_head = list_entry(ed->td_list.next, struct td, node);
|
|
else
|
|
ed->td_head = NULL;
|
|
|
|
kfree(urb_priv->tds);
|
|
kfree(urb_priv);
|
|
urb->hcpriv = NULL;
|
|
|
|
/* if this TD was the ED's head,find next TD */
|
|
if (ed->td_head == NULL)
|
|
list_del_init(&ed->node);
|
|
fhci->active_urbs--;
|
|
}
|
|
|
|
/* this routine called to complete and free done URB */
|
|
void fhci_urb_complete_free(struct fhci_hcd *fhci, struct urb *urb)
|
|
{
|
|
free_urb_priv(fhci, urb);
|
|
|
|
if (urb->status == -EINPROGRESS) {
|
|
if (urb->actual_length != urb->transfer_buffer_length &&
|
|
urb->transfer_flags & URB_SHORT_NOT_OK)
|
|
urb->status = -EREMOTEIO;
|
|
else
|
|
urb->status = 0;
|
|
}
|
|
|
|
usb_hcd_unlink_urb_from_ep(fhci_to_hcd(fhci), urb);
|
|
|
|
spin_unlock(&fhci->lock);
|
|
|
|
usb_hcd_giveback_urb(fhci_to_hcd(fhci), urb, urb->status);
|
|
|
|
spin_lock(&fhci->lock);
|
|
}
|
|
|
|
/*
|
|
* caculate transfer length/stats and update the urb
|
|
* Precondition: irqsafe(only for urb-?status locking)
|
|
*/
|
|
void fhci_done_td(struct urb *urb, struct td *td)
|
|
{
|
|
struct ed *ed = td->ed;
|
|
u32 cc = td->status;
|
|
|
|
/* ISO...drivers see per-TD length/status */
|
|
if (ed->mode == FHCI_TF_ISO) {
|
|
u32 len;
|
|
if (!(urb->transfer_flags & URB_SHORT_NOT_OK &&
|
|
cc == USB_TD_RX_DATA_UNDERUN))
|
|
cc = USB_TD_OK;
|
|
|
|
if (usb_pipeout(urb->pipe))
|
|
len = urb->iso_frame_desc[td->iso_index].length;
|
|
else
|
|
len = td->actual_len;
|
|
|
|
urb->actual_length += len;
|
|
urb->iso_frame_desc[td->iso_index].actual_length = len;
|
|
urb->iso_frame_desc[td->iso_index].status =
|
|
status_to_error(cc);
|
|
}
|
|
|
|
/* BULK,INT,CONTROL... drivers see aggregate length/status,
|
|
* except that "setup" bytes aren't counted and "short" transfers
|
|
* might not be reported as errors.
|
|
*/
|
|
else {
|
|
if (td->error_cnt >= 3)
|
|
urb->error_count = 3;
|
|
|
|
/* control endpoint only have soft stalls */
|
|
|
|
/* update packet status if needed(short may be ok) */
|
|
if (!(urb->transfer_flags & URB_SHORT_NOT_OK) &&
|
|
cc == USB_TD_RX_DATA_UNDERUN) {
|
|
ed->state = FHCI_ED_OPER;
|
|
cc = USB_TD_OK;
|
|
}
|
|
if (cc != USB_TD_OK) {
|
|
if (urb->status == -EINPROGRESS)
|
|
urb->status = status_to_error(cc);
|
|
}
|
|
|
|
/* count all non-empty packets except control SETUP packet */
|
|
if (td->type != FHCI_TA_SETUP || td->iso_index != 0)
|
|
urb->actual_length += td->actual_len;
|
|
}
|
|
}
|
|
|
|
/* there are some pedning request to unlink */
|
|
void fhci_del_ed_list(struct fhci_hcd *fhci, struct ed *ed)
|
|
{
|
|
struct td *td = peek_td_from_ed(ed);
|
|
struct urb *urb = td->urb;
|
|
struct urb_priv *urb_priv = urb->hcpriv;
|
|
|
|
if (urb_priv->state == URB_DEL) {
|
|
td = fhci_remove_td_from_ed(ed);
|
|
/* HC may have partly processed this TD */
|
|
if (td->status != USB_TD_INPROGRESS)
|
|
fhci_done_td(urb, td);
|
|
|
|
/* URB is done;clean up */
|
|
if (++(urb_priv->tds_cnt) == urb_priv->num_of_tds)
|
|
fhci_urb_complete_free(fhci, urb);
|
|
}
|
|
}
|