1 /*
2  * MUSB OTG driver host defines
3  *
4  * Copyright 2005 Mentor Graphics Corporation
5  * Copyright (C) 2005-2006 by Texas Instruments
6  * Copyright (C) 2006-2007 Nokia Corporation
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * version 2 as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA
21  *
22  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
25  * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
29  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  *
33  */
34 
35 #ifndef _MUSB_HOST_H
36 #define _MUSB_HOST_H
37 #ifdef __UBOOT__
38 #include "usb-compat.h"
39 #endif
40 
41 static inline struct usb_hcd *musb_to_hcd(struct musb *musb)
42 {
43 	return container_of((void *) musb, struct usb_hcd, hcd_priv);
44 }
45 
46 static inline struct musb *hcd_to_musb(struct usb_hcd *hcd)
47 {
48 	return (struct musb *) (hcd->hcd_priv);
49 }
50 
51 /* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints */
52 struct musb_qh {
53 	struct usb_host_endpoint *hep;		/* usbcore info */
54 	struct usb_device	*dev;
55 	struct musb_hw_ep	*hw_ep;		/* current binding */
56 
57 	struct list_head	ring;		/* of musb_qh */
58 	/* struct musb_qh		*next; */	/* for periodic tree */
59 	u8			mux;		/* qh multiplexed to hw_ep */
60 
61 	unsigned		offset;		/* in urb->transfer_buffer */
62 	unsigned		segsize;	/* current xfer fragment */
63 
64 	u8			type_reg;	/* {rx,tx} type register */
65 	u8			intv_reg;	/* {rx,tx} interval register */
66 	u8			addr_reg;	/* device address register */
67 	u8			h_addr_reg;	/* hub address register */
68 	u8			h_port_reg;	/* hub port register */
69 
70 	u8			is_ready;	/* safe to modify hw_ep */
71 	u8			type;		/* XFERTYPE_* */
72 	u8			epnum;
73 	u8			hb_mult;	/* high bandwidth pkts per uf */
74 	u16			maxpacket;
75 	u16			frame;		/* for periodic schedule */
76 	unsigned		iso_idx;	/* in urb->iso_frame_desc[] */
77 };
78 
79 /* map from control or bulk queue head to the first qh on that ring */
80 static inline struct musb_qh *first_qh(struct list_head *q)
81 {
82 	if (list_empty(q))
83 		return NULL;
84 	return list_entry(q->next, struct musb_qh, ring);
85 }
86 
87 
88 extern void musb_root_disconnect(struct musb *musb);
89 
90 struct usb_hcd;
91 
92 extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf);
93 extern int musb_hub_control(struct usb_hcd *hcd,
94 			u16 typeReq, u16 wValue, u16 wIndex,
95 			char *buf, u16 wLength);
96 
97 extern const struct hc_driver musb_hc_driver;
98 
99 static inline struct urb *next_urb(struct musb_qh *qh)
100 {
101 	struct list_head	*queue;
102 
103 	if (!qh)
104 		return NULL;
105 	queue = &qh->hep->urb_list;
106 	if (list_empty(queue))
107 		return NULL;
108 	return list_entry(queue->next, struct urb, urb_list);
109 }
110 
111 #ifdef __UBOOT__
112 int musb_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
113 #endif
114 #endif				/* _MUSB_HOST_H */
115