[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / usbip / stub.h

/*
 * Copyright (C) 2003-2008 Takahiro Hirofuchi
 *
 * This 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.
 *
 * This 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 * USA.
 */

#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/net.h>

struct stub_device {
	struct usb_interface *interface;
	struct list_head list;

	struct usbip_device ud;
	__u32 devid;

	/*
	 * stub_priv preserves private data of each urb.
	 * It is allocated as stub_priv_cache and assigned to urb->context.
	 *
	 * stub_priv is always linked to any one of 3 lists;
	 *	priv_init: linked to this until the comletion of a urb.
	 *	priv_tx  : linked to this after the completion of a urb.
	 *	priv_free: linked to this after the sending of the result.
	 *
	 * Any of these list operations should be locked by priv_lock.
	 */
	spinlock_t priv_lock;
	struct list_head priv_init;
	struct list_head priv_tx;
	struct list_head priv_free;

	/* see comments for unlinking in stub_rx.c */
	struct list_head unlink_tx;
	struct list_head unlink_free;


	wait_queue_head_t tx_waitq;
};

/* private data into urb->priv */
struct stub_priv {
	unsigned long seqnum;
	struct list_head list;
	struct stub_device *sdev;
	struct urb *urb;

	int unlinking;
};

struct stub_unlink {
	unsigned long seqnum;
	struct list_head list;
	__u32 status;
};


extern struct kmem_cache *stub_priv_cache;


/*-------------------------------------------------------------------------*/
/* prototype declarations */

/* stub_tx.c */
void stub_complete(struct urb *);
void stub_tx_loop(struct usbip_task *);

/* stub_dev.c */
extern struct usb_driver stub_driver;

/* stub_rx.c */
void stub_rx_loop(struct usbip_task *);
void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32);

/* stub_main.c */
int match_busid(const char *busid);
void stub_device_cleanup_urbs(struct stub_device *sdev);
Commit	Line	Data
4d7b5c7f TH	1	/*
	2	* Copyright (C) 2003-2008 Takahiro Hirofuchi
	3	*
	4	* This is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*
	9	* This is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
	17	* USA.
	18	*/
	19
	20	#include <linux/kernel.h>
	21	#include <linux/list.h>
	22	#include <linux/spinlock.h>
	23	#include <linux/slab.h>
	24	#include <linux/string.h>
	25	#include <linux/module.h>
	26	#include <linux/net.h>
	27
	28	struct stub_device {
	29	struct usb_interface *interface;
	30	struct list_head list;
	31
	32	struct usbip_device ud;
	33	__u32 devid;
	34
	35	/*
	36	* stub_priv preserves private data of each urb.
	37	* It is allocated as stub_priv_cache and assigned to urb->context.
	38	*
	39	* stub_priv is always linked to any one of 3 lists;
	40	* priv_init: linked to this until the comletion of a urb.
	41	* priv_tx : linked to this after the completion of a urb.
	42	* priv_free: linked to this after the sending of the result.
	43	*
	44	* Any of these list operations should be locked by priv_lock.
	45	*/
	46	spinlock_t priv_lock;
	47	struct list_head priv_init;
	48	struct list_head priv_tx;
	49	struct list_head priv_free;
	50
	51	/* see comments for unlinking in stub_rx.c */
	52	struct list_head unlink_tx;
	53	struct list_head unlink_free;
	54
	55
	56	wait_queue_head_t tx_waitq;
	57	};
	58
	59	/* private data into urb->priv */
	60	struct stub_priv {
	61	unsigned long seqnum;
	62	struct list_head list;
	63	struct stub_device *sdev;
	64	struct urb *urb;
65
66	int unlinking;
67	};
68
69	struct stub_unlink {
70	unsigned long seqnum;
71	struct list_head list;
72	__u32 status;
73	};
74
75
76	extern struct kmem_cache *stub_priv_cache;
77
78
79	/-------------------------------------------------------------------------/
80	/* prototype declarations */
81
82	/* stub_tx.c */
83	void stub_complete(struct urb *);
84	void stub_tx_loop(struct usbip_task *);
85
86	/* stub_dev.c */
87	extern struct usb_driver stub_driver;
88
89	/* stub_rx.c */
90	void stub_rx_loop(struct usbip_task *);
91	void stub_enqueue_ret_unlink(struct stub_device *, __u32, __u32);
92
93	/* stub_main.c */
e9133972	94	int match_busid(const char *busid);
4d7b5c7f	95	void stub_device_cleanup_urbs(struct stub_device *sdev);