147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
/*
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* Copyright (c) 2011 Aeroflex Gaisler
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*
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* BSD license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/errno.h>
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#include <asm-leon/leon.h>
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#include <asm-leon/irq.h>
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#include <asm-leon/timer.h>
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#include <asm-leon/leoncompat.h>
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// '''''''''''''''''''''''''''''''''''''''''''''''''''''
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TAILQ_HEAD (timer_queue, timerevent) timers = TAILQ_HEAD_INITIALIZER (timers);
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int
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addtimer (struct timerevent *e)
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{
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struct timerevent *next;
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unsigned long old = leonbare_disable_traps ();
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TAILQ_FOREACH (next, &timers, n)
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{
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if (!GT_TIMESPEC (e->expire, next->expire))
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break;
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}
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if (next)
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{
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TAILQ_INSERT_BEFORE (next, e, n);
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}
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else
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{
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TAILQ_INSERT_TAIL (&timers, e, n);
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}
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leonbare_enable_traps (old);
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}
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extern unsigned long noalarm;
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void
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settimer ()
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{
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struct timeval tv, te;
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struct timerevent *e = TAILQ_FIRST (&timers), *n;
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while (e)
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{
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n = TAILQ_NEXT (e, n);
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te.tv_sec = e->expire.tv_sec;
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te.tv_usec = e->expire.tv_nsec / NSEC_PER_USEC;
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do_gettimeofday (&tv);
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if (GT_TIMEVAL (te, tv))
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{
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MINUS_TIMEVAL (te, te, tv);
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if (!tv.tv_sec || te.tv_usec <= tick_usec)
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{
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if (!noalarm)
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{
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//---------------------
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switch (LEONCOMPAT_VERSION)
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{
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case 3:
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default:
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LEON3_GpTimer_Regs->e[1].val = 0;
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LEON3_GpTimer_Regs->e[1].rld = te.tv_usec - 1;
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LEON3_GpTimer_Regs->e[1].ctrl = 0;
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LEON3_GpTimer_Regs->e[1].ctrl =
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LEON3_GPTIMER_EN |
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LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN;
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break;
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}
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}
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//---------------------
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}
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}
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else
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{
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unsigned long old = leonbare_disable_traps ();
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TAILQ_REMOVE (&timers, e, n);
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e->handler (e->arg);
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leonbare_enable_traps (old);
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}
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e = n;
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}
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}
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int
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Timer_getTimer1 (unsigned int **count, unsigned int **reload,
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unsigned int **ctrl)
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{
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//---------------------
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switch (LEONCOMPAT_VERSION)
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{
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case 3:
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default:
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amba_init ();
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*count = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].val);
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*reload = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].rld);
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*ctrl = (unsigned int *) &(LEON3_GpTimer_Regs->e[0].ctrl);
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break;
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}
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//---------------------
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return 1;
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}
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int
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Timer_getTimer2 (unsigned int **count, unsigned int **reload,
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unsigned int **ctrl)
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{
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//---------------------
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switch (LEONCOMPAT_VERSION)
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{
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case 3:
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default:
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amba_init ();
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if (!noalarm)
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{
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*count = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].val);
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*reload = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].rld);
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*ctrl = (unsigned int *) &(LEON3_GpTimer_Regs->e[1].ctrl);
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break;
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}
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return 0;
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}
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//---------------------
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return 1;
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}
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