23e8090257
All drivers implemented so far are for chips which are only available on legacy x86 PCs. This commit moves them into a more appropriate folder, also making the cpu/x86/drivers/ folder ready for other x86 based SoCs.
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/*
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* Copyright (C) 2015, Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sys/rtimer.h"
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#include "contiki-conf.h"
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#include "drivers/legacy_pc/pit.h"
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static volatile rtimer_clock_t tick_count = 0;
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static rtimer_clock_t trigger = UINT64_MAX;
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static void
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update_ticks(void)
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{
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if(++tick_count >= trigger) {
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/* Disable trigger by assigning it to the maximum value */
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trigger = UINT64_MAX;
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rtimer_run_next();
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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rtimer_arch_init(void)
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{
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pit_init(RTIMER_ARCH_SECOND, update_ticks);
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}
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/*---------------------------------------------------------------------------*/
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rtimer_clock_t
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rtimer_arch_now()
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{
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return tick_count;
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}
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/*---------------------------------------------------------------------------*/
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void
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rtimer_arch_schedule(rtimer_clock_t t)
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{
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trigger = t;
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}
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