leon2timer.h
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/*
* Copyright (c) 2017, Cobham Gaisler AB
* All rights reserved.
*
* 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 __LEON2TIMER_REGS_H_
#define __LEON2TIMER_REGS_H_
/*
* Register description for LEON2 timer
*/
#include <stdint.h>
/* LEON2 subtimer instance */
struct leon2timer_timer_regs {
uint32_t counter;
uint32_t reload;
uint32_t ctrl;
uint32_t _reserved;
};
/* A LEON2 starts with 2 subtimers. */
#define LEON2TIMER_NSUBTIMERS 2
/* LEON2 timer common registers */
struct leon2timer_regs {
struct leon2timer_timer_regs timer[LEON2TIMER_NSUBTIMERS];
uint32_t scaler_value;
uint32_t scaler_reload;
};
/* NOTE: There are no IE or IP bits. */
#define LEON2TIMER_CTRL_LD (1 << 2)
#define LEON2TIMER_CTRL_RL (1 << 1)
#define LEON2TIMER_CTRL_EN (1 << 0)
/* The prescaler is 10 bit wide. */
#define LEON2TIMER_SCALER_MASK (0x3ff)
#endif