xref: /illumos-gate/usr/src/uts/common/sys/usb/usba/genconsole.h (revision d29f5a71)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef	_SYS_USB_CONSOLE_INPUT_H
#define	_SYS_USB_CONSOLE_INPUT_H


#ifdef	__cplusplus
extern "C" {
#endif

/*
 * Opaque handle which is used above the usba level.
 */
typedef struct usb_console_info		*usb_console_info_t;

/*
 * Opaque handle which is used above the ohci level.
 */
typedef struct usb_console_info_private	*usb_console_info_private_t;

/*
 * This is the structure definition for the console input handle.
 * This structure is passed down from hid and is used keep track
 * of state information for the USB OBP support.
 */
typedef struct usb_console_info_impl {
	/*
	 * The dip for the device that is going to be used as input.
	 */
	dev_info_t			*uci_dip;

	/*
	 * Private data that ohci uses for state information.
	 */
	usb_console_info_private_t	uci_private;
} usb_console_info_impl_t;

_NOTE(SCHEME_PROTECTS_DATA("Data only written during attach",
	usb_console_info_impl_t::uci_private))
_NOTE(SCHEME_PROTECTS_DATA("Data only written during attach",
        usb_console_info_impl_t::uci_dip))

/*
 * The initialization routine for handling the USB keyboard in OBP mode.
 * This routine saves off state information and calls down to the lower
 * layers to initialize any state information.
 */
int	usb_console_input_init(
	dev_info_t		*dip,
	usb_pipe_handle_t	pipe_handle,
	uchar_t			**obp_buf,
	usb_console_info_t	*console_info_handle
);

/*
 * Free up any resources that we allocated in the above initialization
 * routine.
 */
int	usb_console_input_fini(
	usb_console_info_t console_input_info
);

/*
 * This is the routine that OBP calls to save the USB state information
 * before using the USB keyboard as an input device.  This routine,
 * and all of the routines that it calls, are responsible for saving
 * any state information so that it can be restored when OBP mode is
 * over.
 */
int	usb_console_input_enter(
	usb_console_info_t	console_info_handle
);

/*
 * This is the routine that OBP calls when it wants to read a character.
 * We will call to the lower layers to see if there is any input data
 * available.
 */
int	usb_console_read(
	usb_console_info_t	console_info_handle,
	uint_t			*num_characters
);

/*
 * This is the routine that OBP calls when it is giving up control of the
 * USB keyboard.  This routine, and the lower layer routines that it calls,
 * are responsible for restoring the controller state to the state it was
 * in before OBP took control.
 */
int	usb_console_input_exit(
	usb_console_info_t	console_info_handle
);

int	usb_console_output_init(
	dev_info_t		*dip,
	usb_pipe_handle_t	pipe_handle,
	usb_console_info_t	*console_info_handle
);

int	usb_console_output_fini(
	usb_console_info_t console_output_info
);

int	usb_console_output_enter(
	usb_console_info_t	console_info_handle
);

int	usb_console_write(
	usb_console_info_t	console_info_handle,
	uchar_t			*buf,
	uint_t			num_characters,
	uint_t			*num_characters_written
);

int	usb_console_output_exit(
	usb_console_info_t	console_info_handle
);

#ifdef __cplusplus
}
#endif

#endif /* _SYS_USB_CONSOLE_INPUT_H */