| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
|---|---|
| 2 | /* |
| 3 | * Copyright (C) 2015-2016 Samsung Electronics |
| 4 | * Igor Kotrasinski <i.kotrasinsk@samsung.com> |
| 5 | * Krzysztof Opasiak <k.opasiak@samsung.com> |
| 6 | * |
| 7 | * Refactored from usbip_host_driver.c, which is: |
| 8 | * Copyright (C) 2011 matt mooney <mfm@muteddisk.com> |
| 9 | * 2005-2007 Takahiro Hirofuchi |
| 10 | */ |
| 11 | |
| 12 | #ifndef __USBIP_HOST_COMMON_H |
| 13 | #define __USBIP_HOST_COMMON_H |
| 14 | |
| 15 | #include <stdint.h> |
| 16 | #include <libudev.h> |
| 17 | #include <errno.h> |
| 18 | #include "list.h" |
| 19 | #include "usbip_common.h" |
| 20 | #include "sysfs_utils.h" |
| 21 | |
| 22 | struct usbip_host_driver; |
| 23 | |
| 24 | struct usbip_host_driver_ops { |
| 25 | int (*open)(struct usbip_host_driver *hdriver); |
| 26 | void (*close)(struct usbip_host_driver *hdriver); |
| 27 | int (*refresh_device_list)(struct usbip_host_driver *hdriver); |
| 28 | struct usbip_exported_device * (*get_device)( |
| 29 | struct usbip_host_driver *hdriver, int num); |
| 30 | |
| 31 | int (*read_device)(struct udev_device *sdev, |
| 32 | struct usbip_usb_device *dev); |
| 33 | int (*read_interface)(struct usbip_usb_device *udev, int i, |
| 34 | struct usbip_usb_interface *uinf); |
| 35 | int (*is_my_device)(struct udev_device *udev); |
| 36 | }; |
| 37 | |
| 38 | struct usbip_host_driver { |
| 39 | int ndevs; |
| 40 | /* list of exported device */ |
| 41 | struct list_head edev_list; |
| 42 | const char *udev_subsystem; |
| 43 | struct usbip_host_driver_ops ops; |
| 44 | }; |
| 45 | |
| 46 | struct usbip_exported_device { |
| 47 | struct udev_device *sudev; |
| 48 | int32_t status; |
| 49 | struct usbip_usb_device udev; |
| 50 | struct list_head node; |
| 51 | struct usbip_usb_interface uinf[]; |
| 52 | }; |
| 53 | |
| 54 | /* External API to access the driver */ |
| 55 | static inline int usbip_driver_open(struct usbip_host_driver *hdriver) |
| 56 | { |
| 57 | if (!hdriver->ops.open) |
| 58 | return -EOPNOTSUPP; |
| 59 | return hdriver->ops.open(hdriver); |
| 60 | } |
| 61 | |
| 62 | static inline void usbip_driver_close(struct usbip_host_driver *hdriver) |
| 63 | { |
| 64 | if (!hdriver->ops.close) |
| 65 | return; |
| 66 | hdriver->ops.close(hdriver); |
| 67 | } |
| 68 | |
| 69 | static inline int usbip_refresh_device_list(struct usbip_host_driver *hdriver) |
| 70 | { |
| 71 | if (!hdriver->ops.refresh_device_list) |
| 72 | return -EOPNOTSUPP; |
| 73 | return hdriver->ops.refresh_device_list(hdriver); |
| 74 | } |
| 75 | |
| 76 | static inline struct usbip_exported_device * |
| 77 | usbip_get_device(struct usbip_host_driver *hdriver, int num) |
| 78 | { |
| 79 | if (!hdriver->ops.get_device) |
| 80 | return NULL; |
| 81 | return hdriver->ops.get_device(hdriver, num); |
| 82 | } |
| 83 | |
| 84 | /* Helper functions for implementing driver backend */ |
| 85 | int usbip_generic_driver_open(struct usbip_host_driver *hdriver); |
| 86 | void usbip_generic_driver_close(struct usbip_host_driver *hdriver); |
| 87 | int usbip_generic_refresh_device_list(struct usbip_host_driver *hdriver); |
| 88 | int usbip_export_device(struct usbip_exported_device *edev, int sockfd); |
| 89 | struct usbip_exported_device *usbip_generic_get_device( |
| 90 | struct usbip_host_driver *hdriver, int num); |
| 91 | |
| 92 | #endif /* __USBIP_HOST_COMMON_H */ |
| 93 |