191 lines
4.2 KiB
C
191 lines
4.2 KiB
C
/*
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* Copyright (C) 2015 Karol Kosik <karo9@interia.eu>
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* Copyright (C) 2015-2016 Samsung Electronics
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* Igor Kotrasinski <i.kotrasinsk@samsung.com>
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* Krzysztof Opasiak <k.opasiak@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __USBIP_VUDC_H
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#define __USBIP_VUDC_H
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#include <linux/platform_device.h>
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#include <linux/usb.h>
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#include <linux/usb/gadget.h>
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#include <linux/usb/ch9.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/time.h>
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#include <linux/sysfs.h>
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#include "usbip_common.h"
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#define GADGET_NAME "usbip-vudc"
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struct vep {
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struct usb_ep ep;
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unsigned type:2; /* type, as USB_ENDPOINT_XFER_* */
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char name[8]; /* space for ep name */
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const struct usb_endpoint_descriptor *desc;
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struct usb_gadget *gadget;
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struct list_head req_queue; /* Request queue */
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unsigned halted:1;
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unsigned wedged:1;
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unsigned already_seen:1;
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unsigned setup_stage:1;
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};
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struct vrequest {
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struct usb_request req;
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struct vudc *udc;
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struct list_head req_entry; /* Request queue */
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};
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struct urbp {
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struct urb *urb;
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struct vep *ep;
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struct list_head urb_entry; /* urb queue */
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unsigned long seqnum;
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unsigned type:2; /* for tx, since ep type can change after */
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unsigned new:1;
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};
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struct v_unlink {
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unsigned long seqnum;
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__u32 status;
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};
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enum tx_type {
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TX_UNLINK,
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TX_SUBMIT,
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};
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struct tx_item {
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struct list_head tx_entry;
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enum tx_type type;
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union {
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struct urbp *s;
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struct v_unlink *u;
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};
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};
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enum tr_state {
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VUDC_TR_RUNNING,
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VUDC_TR_IDLE,
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VUDC_TR_STOPPED,
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};
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struct transfer_timer {
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struct timer_list timer;
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enum tr_state state;
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unsigned long frame_start;
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int frame_limit;
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};
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struct vudc {
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struct usb_gadget gadget;
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struct usb_gadget_driver *driver;
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struct platform_device *pdev;
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struct usb_device_descriptor dev_desc;
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struct usbip_device ud;
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struct transfer_timer tr_timer;
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struct timeval start_time;
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struct list_head urb_queue;
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spinlock_t lock_tx;
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struct list_head tx_queue;
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wait_queue_head_t tx_waitq;
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spinlock_t lock;
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struct vep *ep;
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int address;
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u16 devstatus;
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unsigned pullup:1;
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unsigned connected:1;
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unsigned desc_cached:1;
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};
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struct vudc_device {
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struct platform_device *pdev;
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struct list_head dev_entry;
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};
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extern const struct attribute_group vudc_attr_group;
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/* visible everywhere */
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static inline struct vep *to_vep(struct usb_ep *_ep)
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{
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return container_of(_ep, struct vep, ep);
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}
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static inline struct vrequest *to_vrequest(
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struct usb_request *_req)
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{
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return container_of(_req, struct vrequest, req);
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}
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static inline struct vudc *usb_gadget_to_vudc(
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struct usb_gadget *_gadget)
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{
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return container_of(_gadget, struct vudc, gadget);
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}
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static inline struct vudc *ep_to_vudc(struct vep *ep)
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{
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return container_of(ep->gadget, struct vudc, gadget);
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}
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/* vudc_sysfs.c */
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int get_gadget_descs(struct vudc *udc);
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/* vudc_tx.c */
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int v_tx_loop(void *data);
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void v_enqueue_ret_unlink(struct vudc *udc, __u32 seqnum, __u32 status);
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void v_enqueue_ret_submit(struct vudc *udc, struct urbp *urb_p);
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/* vudc_rx.c */
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int v_rx_loop(void *data);
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/* vudc_transfer.c */
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void v_init_timer(struct vudc *udc);
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void v_start_timer(struct vudc *udc);
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void v_kick_timer(struct vudc *udc, unsigned long time);
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void v_stop_timer(struct vudc *udc);
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/* vudc_dev.c */
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struct urbp *alloc_urbp(void);
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void free_urbp_and_urb(struct urbp *urb_p);
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struct vep *vudc_find_endpoint(struct vudc *udc, u8 address);
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struct vudc_device *alloc_vudc_device(int devid);
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void put_vudc_device(struct vudc_device *udc_dev);
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int vudc_probe(struct platform_device *pdev);
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int vudc_remove(struct platform_device *pdev);
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#endif /* __USBIP_VUDC_H */
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