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/* -*- c++ -*- */
/*
* Copyright 2007 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_HAL_IO_H
#define INCLUDED_HAL_IO_H
#include "memory_map.h"
void hal_io_init(void);
void hal_finish();
char *gets(char * const s);
/*
* ------------------------------------------------------------------------
* control the leds
*
* Low 4-bits are the general purpose leds on the board
* The next bit is the led on the ethernet connector
* ------------------------------------------------------------------------
*/
void hal_set_leds(int value, int mask);
void hal_set_led_src(int value, int mask);
void hal_toggle_leds(int mask);
/*
* ------------------------------------------------------------------------
* simple timeouts
* ------------------------------------------------------------------------
*/
static inline void
hal_set_timeout(int delta_ticks)
{
sr_simple_timer->onetime = delta_ticks;
}
/*
* ------------------------------------------------------------------------
* interrupt enable/disable
* ------------------------------------------------------------------------
*/
/*!
* \brief Disable interrupts and return previous interrupt enable state.
* [Microblaze specific]
*/
static inline int
hal_disable_ints(void)
{
int result, t0;
asm volatile("mfs %0, rmsr \n\
andni %1, %0, 0x2 \n\
mts rmsr, %1"
: "=r" (result), "=r" (t0));
return result;
}
/*!
* \brief Enable interrupts and return previous interrupt enable state.
* [Microblaze specific]
*/
static inline int
hal_enable_ints(void)
{
int result, t0;
asm volatile("mfs %0, rmsr \n\
ori %1, %0, 0x2 \n\
mts rmsr, %1"
: "=r" (result), "=r" (t0));
return result;
}
/*!
* \brief Set interrupt enable state to \p prev_state.
* [Microblaze specific]
*/
static inline void
hal_restore_ints(int prev_state)
{
int t0, t1;
asm volatile("andi %0, %2, 0x2 \n\
mfs %1, rmsr \n\
andni %1, %1, 0x2 \n\
or %1, %1, %0 \n\
mts rmsr, %1"
: "=r" (t0), "=r"(t1) : "r" (prev_state));
}
#endif /* INCLUDED_HAL_IO_H */
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