From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/usb/usbip/vudc.h | 178 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 drivers/usb/usbip/vudc.h (limited to 'drivers/usb/usbip/vudc.h') diff --git a/drivers/usb/usbip/vudc.h b/drivers/usb/usbip/vudc.h new file mode 100644 index 000000000..1bd4bc005 --- /dev/null +++ b/drivers/usb/usbip/vudc.h @@ -0,0 +1,178 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2015 Karol Kosik + * Copyright (C) 2015-2016 Samsung Electronics + * Igor Kotrasinski + * Krzysztof Opasiak + */ + +#ifndef __USBIP_VUDC_H +#define __USBIP_VUDC_H + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "usbip_common.h" + +#define GADGET_NAME "usbip-vudc" + +struct vep { + struct usb_ep ep; + unsigned type:2; /* type, as USB_ENDPOINT_XFER_* */ + char name[8]; /* space for ep name */ + + const struct usb_endpoint_descriptor *desc; + struct usb_gadget *gadget; + struct list_head req_queue; /* Request queue */ + unsigned halted:1; + unsigned wedged:1; + unsigned already_seen:1; + unsigned setup_stage:1; +}; + +struct vrequest { + struct usb_request req; + struct vudc *udc; + struct list_head req_entry; /* Request queue */ +}; + +struct urbp { + struct urb *urb; + struct vep *ep; + struct list_head urb_entry; /* urb queue */ + unsigned long seqnum; + unsigned type:2; /* for tx, since ep type can change after */ + unsigned new:1; +}; + +struct v_unlink { + unsigned long seqnum; + __u32 status; +}; + +enum tx_type { + TX_UNLINK, + TX_SUBMIT, +}; + +struct tx_item { + struct list_head tx_entry; + enum tx_type type; + union { + struct urbp *s; + struct v_unlink *u; + }; +}; + +enum tr_state { + VUDC_TR_RUNNING, + VUDC_TR_IDLE, + VUDC_TR_STOPPED, +}; + +struct transfer_timer { + struct timer_list timer; + enum tr_state state; + unsigned long frame_start; + int frame_limit; +}; + +struct vudc { + struct usb_gadget gadget; + struct usb_gadget_driver *driver; + struct platform_device *pdev; + + struct usb_device_descriptor dev_desc; + + struct usbip_device ud; + struct transfer_timer tr_timer; + struct timespec64 start_time; + + struct list_head urb_queue; + + spinlock_t lock_tx; + struct list_head tx_queue; + wait_queue_head_t tx_waitq; + + spinlock_t lock; + struct vep *ep; + int address; + u16 devstatus; + + unsigned pullup:1; + unsigned connected:1; + unsigned desc_cached:1; +}; + +struct vudc_device { + struct platform_device *pdev; + struct list_head dev_entry; +}; + +extern const struct attribute_group *vudc_groups[]; + +/* visible everywhere */ + +static inline struct vep *to_vep(struct usb_ep *_ep) +{ + return container_of(_ep, struct vep, ep); +} + +static inline struct vrequest *to_vrequest( + struct usb_request *_req) +{ + return container_of(_req, struct vrequest, req); +} + +static inline struct vudc *usb_gadget_to_vudc( + struct usb_gadget *_gadget) +{ + return container_of(_gadget, struct vudc, gadget); +} + +static inline struct vudc *ep_to_vudc(struct vep *ep) +{ + return container_of(ep->gadget, struct vudc, gadget); +} + +/* vudc_sysfs.c */ + +int get_gadget_descs(struct vudc *udc); + +/* vudc_tx.c */ + +int v_tx_loop(void *data); +void v_enqueue_ret_unlink(struct vudc *udc, __u32 seqnum, __u32 status); +void v_enqueue_ret_submit(struct vudc *udc, struct urbp *urb_p); + +/* vudc_rx.c */ + +int v_rx_loop(void *data); + +/* vudc_transfer.c */ + +void v_init_timer(struct vudc *udc); +void v_start_timer(struct vudc *udc); +void v_kick_timer(struct vudc *udc, unsigned long time); +void v_stop_timer(struct vudc *udc); + +/* vudc_dev.c */ + +struct urbp *alloc_urbp(void); +void free_urbp_and_urb(struct urbp *urb_p); + +struct vep *vudc_find_endpoint(struct vudc *udc, u8 address); + +struct vudc_device *alloc_vudc_device(int devid); +void put_vudc_device(struct vudc_device *udc_dev); + +int vudc_probe(struct platform_device *pdev); +int vudc_remove(struct platform_device *pdev); + +#endif /* __USBIP_VUDC_H */ -- cgit v1.2.3