/*
* Copyright (c) 2013 Beniamino Galvani
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup kernel_genarch
* @{
*/
/**
* @file
* @brief Broadcom BCM2835 system timer driver.
*/
#ifndef KERN_BCM2835_TIMER_H_
#include <assert.h>
#include <typedefs.h>
#include <mm/km.h>
#define BCM2835_TIMER_ADDR 0x20003000
#define BCM2835_CLOCK_FREQ 1000000
typedef struct {
/** System Timer Control/Status */
ioport32_t cs;
#define BCM2835_TIMER_CS_M0 (1 << 0)
#define BCM2835_TIMER_CS_M1 (1 << 1)
#define BCM2835_TIMER_CS_M2 (1 << 2)
#define BCM2835_TIMER_CS_M3 (1 << 3)
/** System Timer Counter Lower 32 bits */
ioport32_t clo;
/** System Timer Counter Higher 32 bits */
ioport32_t chi;
/** System Timer Compare 0 */
ioport32_t c0;
/** System Timer Compare 1 */
ioport32_t c1;
/** System Timer Compare 2 */
ioport32_t c2;
/** System Timer Compare 3 */
ioport32_t c3;
} bcm2835_timer_t;
extern void bcm2835_timer_start(bcm2835_timer_t *);
extern void bcm2835_timer_irq_ack(bcm2835_timer_t *);
#endif /* KERN_BCM2835_TIMER_H_ */
/**
* @}
*/