diff options
Diffstat (limited to 'include/uapi/linux/usb')
| -rw-r--r-- | include/uapi/linux/usb/raw_gadget.h | 108 |
1 files changed, 95 insertions, 13 deletions
diff --git a/include/uapi/linux/usb/raw_gadget.h b/include/uapi/linux/usb/raw_gadget.h index ea375082b3ac..0be685272eb1 100644 --- a/include/uapi/linux/usb/raw_gadget.h +++ b/include/uapi/linux/usb/raw_gadget.h @@ -93,6 +93,64 @@ struct usb_raw_ep_io { __u8 data[0]; }; +/* Maximum number of non-control endpoints in struct usb_raw_eps_info. */ +#define USB_RAW_EPS_NUM_MAX 30 + +/* Maximum length of UDC endpoint name in struct usb_raw_ep_info. */ +#define USB_RAW_EP_NAME_MAX 16 + +/* Used as addr in struct usb_raw_ep_info if endpoint accepts any address. */ +#define USB_RAW_EP_ADDR_ANY 0xff + +/* + * struct usb_raw_ep_caps - exposes endpoint capabilities from struct usb_ep + * (technically from its member struct usb_ep_caps). + */ +struct usb_raw_ep_caps { + __u32 type_control : 1; + __u32 type_iso : 1; + __u32 type_bulk : 1; + __u32 type_int : 1; + __u32 dir_in : 1; + __u32 dir_out : 1; +}; + +/* + * struct usb_raw_ep_limits - exposes endpoint limits from struct usb_ep. + * @maxpacket_limit: Maximum packet size value supported by this endpoint. + * @max_streams: maximum number of streams supported by this endpoint + * (actual number is 2^n). + * @reserved: Empty, reserved for potential future extensions. + */ +struct usb_raw_ep_limits { + __u16 maxpacket_limit; + __u16 max_streams; + __u32 reserved; +}; + +/* + * struct usb_raw_ep_info - stores information about a gadget endpoint. + * @name: Name of the endpoint as it is defined in the UDC driver. + * @addr: Address of the endpoint that must be specified in the endpoint + * descriptor passed to USB_RAW_IOCTL_EP_ENABLE ioctl. + * @caps: Endpoint capabilities. + * @limits: Endpoint limits. + */ +struct usb_raw_ep_info { + __u8 name[USB_RAW_EP_NAME_MAX]; + __u32 addr; + struct usb_raw_ep_caps caps; + struct usb_raw_ep_limits limits; +}; + +/* + * struct usb_raw_eps_info - argument for USB_RAW_IOCTL_EPS_INFO ioctl. + * eps: Structures that store information about non-control endpoints. + */ +struct usb_raw_eps_info { + struct usb_raw_ep_info eps[USB_RAW_EPS_NUM_MAX]; +}; + /* * Initializes a Raw Gadget instance. * Accepts a pointer to the usb_raw_init struct as an argument. @@ -115,37 +173,38 @@ struct usb_raw_ep_io { #define USB_RAW_IOCTL_EVENT_FETCH _IOR('U', 2, struct usb_raw_event) /* - * Queues an IN (OUT for READ) urb as a response to the last control request - * received on endpoint 0, provided that was an IN (OUT for READ) request and - * waits until the urb is completed. Copies received data to user for READ. + * Queues an IN (OUT for READ) request as a response to the last setup request + * received on endpoint 0 (provided that was an IN (OUT for READ) request), and + * waits until the request is completed. Copies received data to user for READ. * Accepts a pointer to the usb_raw_ep_io struct as an argument. - * Returns length of trasferred data on success or negative error code on + * Returns length of transferred data on success or negative error code on * failure. */ #define USB_RAW_IOCTL_EP0_WRITE _IOW('U', 3, struct usb_raw_ep_io) #define USB_RAW_IOCTL_EP0_READ _IOWR('U', 4, struct usb_raw_ep_io) /* - * Finds an endpoint that supports the transfer type specified in the - * descriptor and enables it. - * Accepts a pointer to the usb_endpoint_descriptor struct as an argument. + * Finds an endpoint that satisfies the parameters specified in the provided + * descriptors (address, transfer type, etc.) and enables it. + * Accepts a pointer to the usb_raw_ep_descs struct as an argument. * Returns enabled endpoint handle on success or negative error code on failure. */ #define USB_RAW_IOCTL_EP_ENABLE _IOW('U', 5, struct usb_endpoint_descriptor) -/* Disables specified endpoint. +/* + * Disables specified endpoint. * Accepts endpoint handle as an argument. * Returns 0 on success or negative error code on failure. */ #define USB_RAW_IOCTL_EP_DISABLE _IOW('U', 6, __u32) /* - * Queues an IN (OUT for READ) urb as a response to the last control request - * received on endpoint usb_raw_ep_io.ep, provided that was an IN (OUT for READ) - * request and waits until the urb is completed. Copies received data to user - * for READ. + * Queues an IN (OUT for READ) request as a response to the last setup request + * received on endpoint usb_raw_ep_io.ep (provided that was an IN (OUT for READ) + * request), and waits until the request is completed. Copies received data to + * user for READ. * Accepts a pointer to the usb_raw_ep_io struct as an argument. - * Returns length of trasferred data on success or negative error code on + * Returns length of transferred data on success or negative error code on * failure. */ #define USB_RAW_IOCTL_EP_WRITE _IOW('U', 7, struct usb_raw_ep_io) @@ -164,4 +223,27 @@ struct usb_raw_ep_io { */ #define USB_RAW_IOCTL_VBUS_DRAW _IOW('U', 10, __u32) +/* + * Fills in the usb_raw_eps_info structure with information about non-control + * endpoints available for the currently connected UDC. + * Returns the number of available endpoints on success or negative error code + * on failure. + */ +#define USB_RAW_IOCTL_EPS_INFO _IOR('U', 11, struct usb_raw_eps_info) + +/* + * Stalls a pending control request on endpoint 0. + * Returns 0 on success or negative error code on failure. + */ +#define USB_RAW_IOCTL_EP0_STALL _IO('U', 12) + +/* + * Sets or clears halt or wedge status of the endpoint. + * Accepts endpoint handle as an argument. + * Returns 0 on success or negative error code on failure. + */ +#define USB_RAW_IOCTL_EP_SET_HALT _IOW('U', 13, __u32) +#define USB_RAW_IOCTL_EP_CLEAR_HALT _IOW('U', 14, __u32) +#define USB_RAW_IOCTL_EP_SET_WEDGE _IOW('U', 15, __u32) + #endif /* _UAPI__LINUX_USB_RAW_GADGET_H */ |