114 lines
2.6 KiB
C
114 lines
2.6 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/delay.h>
|
||
|
|
#include <linux/list.h>
|
||
|
|
#include <linux/usb.h>
|
||
|
|
#include "../core/hcd.h"
|
||
|
|
#include "fhci.h"
|
||
|
|
|
||
|
|
static void init_td(struct td *td)
|
||
|
|
{
|
||
|
|
memset(td, 0, sizeof(*td));
|
||
|
|
INIT_LIST_HEAD(&td->node);
|
||
|
|
INIT_LIST_HEAD(&td->frame_lh);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void init_ed(struct ed *ed)
|
||
|
|
{
|
||
|
|
memset(ed, 0, sizeof(*ed));
|
||
|
|
INIT_LIST_HEAD(&ed->td_list);
|
||
|
|
INIT_LIST_HEAD(&ed->node);
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct td *get_empty_td(struct fhci_hcd *fhci)
|
||
|
|
{
|
||
|
|
struct td *td;
|
||
|
|
|
||
|
|
if (!list_empty(&fhci->empty_tds)) {
|
||
|
|
td = list_entry(fhci->empty_tds.next, struct td, node);
|
||
|
|
list_del(fhci->empty_tds.next);
|
||
|
|
} else {
|
||
|
|
td = kmalloc(sizeof(*td), GFP_ATOMIC);
|
||
|
|
if (!td)
|
||
|
|
fhci_err(fhci, "No memory to allocate to TD\n");
|
||
|
|
else
|
||
|
|
init_td(td);
|
||
|
|
}
|
||
|
|
|
||
|
|
return td;
|
||
|
|
}
|
||
|
|
|
||
|
|
void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
|
||
|
|
{
|
||
|
|
init_td(td);
|
||
|
|
list_add(&td->node, &fhci->empty_tds);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci)
|
||
|
|
{
|
||
|
|
struct ed *ed;
|
||
|
|
|
||
|
|
if (!list_empty(&fhci->empty_eds)) {
|
||
|
|
ed = list_entry(fhci->empty_eds.next, struct ed, node);
|
||
|
|
list_del(fhci->empty_eds.next);
|
||
|
|
} else {
|
||
|
|
ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
|
||
|
|
if (!ed)
|
||
|
|
fhci_err(fhci, "No memory to allocate to ED\n");
|
||
|
|
else
|
||
|
|
init_ed(ed);
|
||
|
|
}
|
||
|
|
|
||
|
|
return ed;
|
||
|
|
}
|
||
|
|
|
||
|
|
void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
|
||
|
|
{
|
||
|
|
init_ed(ed);
|
||
|
|
list_add(&ed->node, &fhci->empty_eds);
|
||
|
|
}
|
||
|
|
|
||
|
|
struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
|
||
|
|
struct urb_priv *urb_priv, struct ed *ed, u16 index,
|
||
|
|
enum fhci_ta_type type, int toggle, u8 *data, u32 len,
|
||
|
|
u16 interval, u16 start_frame, bool ioc)
|
||
|
|
{
|
||
|
|
struct td *td = get_empty_td(fhci);
|
||
|
|
|
||
|
|
if (!td)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
td->urb = urb;
|
||
|
|
td->ed = ed;
|
||
|
|
td->type = type;
|
||
|
|
td->toggle = toggle;
|
||
|
|
td->data = data;
|
||
|
|
td->len = len;
|
||
|
|
td->iso_index = index;
|
||
|
|
td->interval = interval;
|
||
|
|
td->start_frame = start_frame;
|
||
|
|
td->ioc = ioc;
|
||
|
|
td->status = USB_TD_OK;
|
||
|
|
|
||
|
|
urb_priv->tds[index] = td;
|
||
|
|
|
||
|
|
return td;
|
||
|
|
}
|