개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

usb_lookup_ep_data(9f)

usb_lookup_ep_data(9F)         Kernel Functions         usb_lookup_ep_data(9F)



NAME
       usb_lookup_ep_data - Lookup endpoint information

SYNOPSIS
       #include <sys/usb/usba.h>

       usb_ep_data_t *usb_lookup_ep_data(dev_info_t *dip,
            usb_client_dev_data_t *dev_datap, uint_t interface,
            uint_t alternate, uint_t skip, uint_t type, uint_t direction);

INTERFACE LEVEL
       Solaris DDI specific (Solaris DDI)

PARAMETERS
       dip          Pointer to the device's dev_info structure.


       dev_datap    Pointer  to  a  usb_client_dev_data_t structure containing
                    tree.


       interface    Number of interface in which endpoint resides.


       alternate    Number of interface alternate setting  in  which  endpoint
                    resides.


       skip         Number  of  endpoints  which  match the requested type and
                    direction to skip before finding one to retrieve.


       type         Type of endpoint. This  is  one  of:  USB_EP_ATTR_CONTROL,
                    USB_EP_ATTR_ISOCH,  USB_EP_ATTR_BULK, or USB_EP_ATTR_INTR.
                    Please see usb_pipe_open(9F) for more information.


       direction    Direction   of   endpoint,   either   USB_EP_DIR_OUT    or
                    USB_EP_DIR_IN. This argument is ignored for bi-directional
                    control endpoints.


DESCRIPTION
       The usb_lookup_ep_data() function returns endpoint information from the
       tree  embedded  in client data returned from usb_get_dev_data. It oper‐
       ates on the current configuration (pointed to by the dev_curr_cfg field
       of  the usb_client_dev_data_t argument). It skips the first <skip> num‐
       ber of endpoints it finds which match the specifications of  the  other
       arguments, and then retrieves information on the next matching endpoint
       it finds. Note that it does not make a copy of the data, but points  to
       the tree itself.

RETURN VALUES
       On success: the tree node corresponding to the desired endpoint.


       On  failure:  returns  NULL. Fails if dip or dev_datap are NULL, if the
       desired endpoint does not exist in the tree, or no tree is  present  in
       dev_datap.

CONTEXT
       May be called from user, kernel or interrupt context.

EXAMPLES
       Retrieve  the  polling  interval  for  the second interrupt endpoint at
       interface 0, alt 3:



             uint8_t interval = 0;
             usb_ep_data_t *ep_node = usb_lookup_ep_data(
                 dip, dev_datap, 0, 3, 1, USB_EP_ATTR_INTR, USB_EP_DIR_IN);
             if (ep_node != NULL) {
                     interval = ep_node->ep_descr.bInterval;
             }



       Retrieve the maximum packet size for the first control pipe  at  inter‐
       face 0, alt 4:



             uint16_t maxPacketSize = 0;
             usb_ep_data_t *ep_node = usb_lookup_ep_data(
                 dip, dev_datap, 0, 4, 0, USB_EP_ATTR_CONTROL, 0);
             if (ep_node != NULL) {
                     maxPacketSize = ep_node->ep_descr.wMaxPacketSize;
             }


ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       tab()  box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
       TRIBUTE VALUE _ ArchitecturePCI-based systems  _  Interface  Stability‐
       Committed _ Availabilitysystem/io/usb


SEE ALSO
       attributes(7),         usb_get_dev_data(9F),         usb_pipe_open(9F),
       usb_cfg_descr(9S), usb_ep_descr(9S), usb_if_descr(9S)



Oracle Solaris 11.4               5 Jan 2004            usb_lookup_ep_data(9F)