usb_pipe_get_state(9f) [sunos man page]

usb_pipe_get_state(9F)					   Kernel Functions for Drivers 				    usb_pipe_get_state(9F)

NAME

       usb_pipe_get_state - Return USB pipe state

SYNOPSIS

       #include <sys/usb/usba.h>

       int usb_pipe_get_state(usb_pipe_handle_t pipe_handle, usb_pipe_state_t *pipe_state, usb_flags_t usb_flags);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI)

PARAMETERS

       pipe_handle

	   Handle of the pipe to retrieve the state.

       pipe_state

	   Pointer to where pipe state is returned.

       usb_flags

	   No flags are recognized. Reserved for future 			expansion.

DESCRIPTION

       The usb_pipe_get_state() function retrieves the state of the pipe referred to by pipe_handle into the location pointed to by pipe_state.

       Possible pipe states are:

       USB_PIPE_STATE_CLOSED

	   Pipe is closed.

       USB_PIPE_STATE_ACTIVE

	   Pipe is active and can send/receive data. Polling is active for isochronous and interrupt pipes.

       USB_PIPE_STATE_IDLE

	   Polling is stopped for isochronous and interrupt-IN pipes.

       USB_PIPE_STATE_ERROR

	   An error occurred. Client must call usb_pipe_reset(). Note that this status is not seen by a client driver if USB_ATTRS_AUTOCLEARING is
	   set in the request attributes.

       USB_PIPE_STATE_CLOSING

	   Pipe is being closed.  Requests are being drained from the pipe	     and other cleanup is in progress.

RETURN VALUES

       USB_SUCCESS		       Pipe state returned in second argument.

       USB_INVALID_ARGS 	       Pipe_state argument is NULL.

       USB_INVALID_PIPE 	       Pipe_handle argument is NULL.

CONTEXT

       May be called from user, kernel or interrupt context.

EXAMPLES

	   usb_pipe_handle_t pipe;
	   usb_pipe_state_t state;

	   /* Recover if the pipe is in an error state. */
	   if ((usb_pipe_get_state(pipe, &state, 0) == USB_SUCCESS) &&
	       (state == USB_PIPE_STATE_ERROR)) {
		   cmn_err (CE_WARN, "%s%d: USB Pipe error.",
		       ddi_driver_name(dip), ddi_get_instance(dip));
		   do_recovery();
	   }

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |PCI-based systems 	   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Evolving			   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWusb			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), usb_clr_feature(9F), usb_get_cfg(9F).  usb_get_status(9F),  usb_pipe_close(9F),  usb_pipe_ctrl_xfer(9F),	usb_pipe_open(9F).
       usb_pipe_reset(9F)

SunOS 5.10							    5 Jan 2004						    usb_pipe_get_state(9F)

usb_pipe_set_private(9F)				   Kernel Functions for Drivers 				  usb_pipe_set_private(9F)

NAME

       usb_pipe_set_private, usb_pipe_get_private - USB user-defined pipe data-field facility

SYNOPSIS

       #include <sys/usb/usba.h>

       int usb_pipe_set_private(usb_pipe_handle_t pipe_handle, usb_opaque_t data);

       usb_opaque_t usb_pipe_get_private (usb_pipe_handle_t pipe_handle);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI)

PARAMETERS

       For usb_pipe_set_private():

       pipe_handle    Pipe handle into which user-defined data is placed.

       data	      Data to store in the pipe handle.

       For usb_pipe_get_private():

       pipe_handle    Pipe handle from which user-defined data is retrieved.

DESCRIPTION

       The  usb_set_driver_private()  function	initializes  the  user-private	data field of the pipe referred to by pipe_handle, using data. The
       user-private data field is  used to store any data the client desires and is not used in any way by the USBA or OS framework. Client  driv-
       ers often store their soft-state here for convenient retrieval by their callback handlers.

       The  usb_get_driver_private()  function	retrieves  the user-private data stored via usb_set_driver_private(), from the pipe referred to by
       pipe_handle.

RETURN VALUES

       For usb_pipe_set_private():

       USB_SUCCESS	   Private data has been successfully stored in pipe handle.

       USB_INVALID_PIPE    pipe_handle argument is NULL or invalid.

			   Pipe is closing or closed.

       USB_INVALID_PERM    The pipe_handle argument refers to the default control pipe.

       For usb_pipe_get_private():

       On success: usb_opaque_t pointer to data being retrieved.

       On failure: NULL. Fails if pipe handle is NULL or invalid. Fails if pipe handle is to a pipe which is closing or closed.

CONTEXT

       May be called from user, kernel or interrupt context.

EXAMPLES

	     usb_pipe_handle_t pipe;

	     /* Some driver defined datatype. */
	     xxx_data_t *data = kmem_zalloc(...);

	     usb_pipe_set_private(pipe, data);

	     ----

	     xxx_data_t *xxx_data_ptr = (xxx_data_t *)usb_pipe_get_private(pipe);

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |PCI-based systems 	   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWusb			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5), usb_pipe_open(9F), usb_alloc_request(9F)

SunOS 5.11							    5 Jan 2004						  usb_pipe_set_private(9F)