c_clock.h

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/* SPDX-License-Identifier: BSD-2-Clause */
 
/*
 * Copyright (c) 1989-1997 On-Line Applications Research Corporation (OAR).
 *
 * Modified to support the MPC750.
 * Modifications Copyright (c) 1999 Eric Valette <eric.valette@free.fr>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
 
#ifndef _LIBCPU_C_CLOCK_H
#define _LIBCPU_C_CLOCK_H
 
#include <rtems.h>
 
/*
 * These functions and variables represent the API exported by the
 * CPU to the BSP.
 */
 
extern void clockOff    (void* unused);
extern void clockOn (void* unused);
extern void clockIsr    (void* unused);
/* bookE decrementer is slightly different */
extern void clockIsrBookE (void *unused);
extern int  clockIsOn   (void* unused);
 
/*
 *  These functions and variables represent the assumptions of this
 *  driver on the BSP.
 */
 
extern int BSP_disconnect_clock_handler (void);
/*
 * PCI Bus Frequency
 */
extern unsigned int BSP_bus_frequency;
/*
 * processor clock frequency
 */
extern unsigned int BSP_processor_frequency;
/*
 * Time base divisior (how many tick for 1 second).
 */
extern unsigned int BSP_time_base_divisor;
 
#endif