2 * Freescale QUICC Engine USB Host Controller Driver
4 * Copyright (c) Freescale Semicondutor, Inc. 2006.
5 * Shlomi Gridish <gridish@freescale.com>
6 * Jerry Huang <Chang-Ming.Huang@freescale.com>
7 * Copyright (c) Logic Product Development, Inc. 2007
8 * Peter Barada <peterb@logicpd.com>
9 * Copyright (c) MontaVista Software, Inc. 2008.
10 * Anton Vorontsov <avorontsov@ru.mvista.com>
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
18 #include <linux/kernel.h>
19 #include <linux/types.h>
20 #include <linux/delay.h>
21 #include <linux/list.h>
22 #include <linux/usb.h>
23 #include "../core/hcd.h"
26 static void init_td(struct td *td)
28 memset(td, 0, sizeof(*td));
29 INIT_LIST_HEAD(&td->node);
30 INIT_LIST_HEAD(&td->frame_lh);
33 static void init_ed(struct ed *ed)
35 memset(ed, 0, sizeof(*ed));
36 INIT_LIST_HEAD(&ed->td_list);
37 INIT_LIST_HEAD(&ed->node);
40 static struct td *get_empty_td(struct fhci_hcd *fhci)
44 if (!list_empty(&fhci->empty_tds)) {
45 td = list_entry(fhci->empty_tds.next, struct td, node);
46 list_del(fhci->empty_tds.next);
48 td = kmalloc(sizeof(*td), GFP_ATOMIC);
50 fhci_err(fhci, "No memory to allocate to TD\n");
58 void fhci_recycle_empty_td(struct fhci_hcd *fhci, struct td *td)
61 list_add(&td->node, &fhci->empty_tds);
64 struct ed *fhci_get_empty_ed(struct fhci_hcd *fhci)
68 if (!list_empty(&fhci->empty_eds)) {
69 ed = list_entry(fhci->empty_eds.next, struct ed, node);
70 list_del(fhci->empty_eds.next);
72 ed = kmalloc(sizeof(*ed), GFP_ATOMIC);
74 fhci_err(fhci, "No memory to allocate to ED\n");
82 void fhci_recycle_empty_ed(struct fhci_hcd *fhci, struct ed *ed)
85 list_add(&ed->node, &fhci->empty_eds);
88 struct td *fhci_td_fill(struct fhci_hcd *fhci, struct urb *urb,
89 struct urb_priv *urb_priv, struct ed *ed, u16 index,
90 enum fhci_ta_type type, int toggle, u8 *data, u32 len,
91 u16 interval, u16 start_frame, bool ioc)
93 struct td *td = get_empty_td(fhci);
104 td->iso_index = index;
105 td->interval = interval;
106 td->start_frame = start_frame;
108 td->status = USB_TD_OK;
110 urb_priv->tds[index] = td;