musb_host.h

来自「omap3 linux 2.6 用nocc去除了冗余代码」· C头文件 代码 · 共 108 行

/******************************************************************
 * Copyright 2005 Mentor Graphics Corporation
 * Copyright (C) 2005-2006 by Texas Instruments
 *
 * This file is part of the Inventra Controller Driver for Linux.
 *
 * The Inventra Controller Driver for Linux is free software; you
 * can redistribute it and/or modify it under the terms of the GNU
 * General Public License version 2 as published by the Free Software
 * Foundation.
 *
 * The Inventra Controller Driver for Linux is distributed in
 * the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
 * License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with The Inventra Controller Driver for Linux ; if not,
 * write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA  02111-1307  USA
 *
 * ANY DOWNLOAD, USE, REPRODUCTION, MODIFICATION OR DISTRIBUTION
 * OF THIS DRIVER INDICATES YOUR COMPLETE AND UNCONDITIONAL ACCEPTANCE
 * OF THOSE TERMS.THIS DRIVER IS PROVIDED "AS IS" AND MENTOR GRAPHICS
 * MAKES NO WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THIS DRIVER.
 * MENTOR GRAPHICS SPECIFICALLY DISCLAIMS ALL IMPLIED WARRANTIES
 * OF MERCHANTABILITY; FITNESS FOR A PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT.  MENTOR GRAPHICS DOES NOT PROVIDE SUPPORT
 * SERVICES OR UPDATES FOR THIS DRIVER, EVEN IF YOU ARE A MENTOR
 * GRAPHICS SUPPORT CUSTOMER.
 ******************************************************************/

#ifndef _MUSB_HOST_H
#define _MUSB_HOST_H

static inline struct usb_hcd *musb_to_hcd(struct musb *musb)
{
	return (struct usb_hcd *) (((void *)musb)
			- offsetof(struct usb_hcd, hcd_priv));
}

static inline struct musb *hcd_to_musb(struct usb_hcd *hcd)
{
	return (void *) hcd->hcd_priv;
}

/* stored in "usb_host_endpoint.hcpriv" for scheduled endpoints
 */
struct musb_qh {
	struct usb_host_endpoint *hep;		/* usbcore info */
	struct usb_device	*dev;
	struct musb_hw_ep	*hw_ep;		/* current binding */

	struct list_head	ring;		/* of musb_qh */
	//struct musb_qh		*next;		/* for periodic tree */

	unsigned		offset;		/* in urb->transfer_buffer */
	unsigned		segsize;	/* current xfer fragment */

	u8			type_reg;	/* {rx,tx} type register */
	u8			intv_reg;	/* {rx,tx} interval register */
	u8			addr_reg;	/* device address register */
	u8			h_addr_reg;	/* hub address register */
	u8			h_port_reg;	/* hub port register */

	u8			is_ready;	/* safe to modify hw_ep */
	u8			type;		/* XFERTYPE_* */
	u8			epnum;
	u16			maxpacket;
	u16			frame;		/* for periodic schedule */
	unsigned		iso_idx;	/* in urb->iso_frame_desc[] */
};

/* map from control or bulk queue head to the first qh on that ring */
static inline struct musb_qh *first_qh(struct list_head *q)
{
	if (list_empty(q))
		return NULL;
	return container_of(q->next, struct musb_qh, ring);
}


extern void musb_root_disconnect(struct musb *musb);

struct usb_hcd;

extern int musb_hub_status_data(struct usb_hcd *hcd, char *buf);
extern int musb_hub_control(struct usb_hcd *hcd,
			u16 typeReq, u16 wValue, u16 wIndex,
			char *buf, u16 wLength);

extern const struct hc_driver musb_hc_driver;

static inline struct urb *next_urb(struct musb_qh *qh)
{
	struct list_head	*queue;

	if (!qh)
		return NULL;
	queue = &qh->hep->urb_list;
	if (list_empty(queue))
		return NULL;
	return container_of(queue->next, struct urb, urb_list);
}

#endif