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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015 Karol Kosik <karo9@interia.eu> * Copyright (C) 2015-2016 Samsung Electronics * Igor Kotrasinski <i.kotrasinsk@samsung.com> * Krzysztof Opasiak <k.opasiak@samsung.com> */ #ifndef __USBIP_VUDC_H #define __USBIP_VUDC_H #include <linux/platform_device.h> #include <linux/usb.h> #include <linux/usb/gadget.h> #include <linux/usb/ch9.h> #include <linux/list.h> #include <linux/timer.h> #include <linux/time.h> #include <linux/sysfs.h> #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_attr_group; /* 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 */ |