diff options
Diffstat (limited to 'libgloss/sparc_leon/gettimeofday.c')
| -rw-r--r-- | libgloss/sparc_leon/gettimeofday.c | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/libgloss/sparc_leon/gettimeofday.c b/libgloss/sparc_leon/gettimeofday.c deleted file mode 100644 index 088184ca0..000000000 --- a/libgloss/sparc_leon/gettimeofday.c +++ /dev/null @@ -1,272 +0,0 @@ -/* - * Copyright (c) 2011 Aeroflex Gaisler - * - * BSD license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - - -#include <sys/types.h> -#include <sys/time.h> -#include <sys/errno.h> -#include <asm-leon/elfmacro.h> -#include <asm-leon/leon.h> -#include <asm-leon/irq.h> -#include <asm-leon/jiffies.h> -#include <asm-leon/param.h> -#include <asm-leon/leoncompat.h> - -static __inline__ unsigned long do_gettimeoffset (); - - -extern int *rtc; - -unsigned long wall_jiffies = INITIAL_JIFFIES; -unsigned long tick_nsec = TICK_NSEC; -unsigned long tick_usec = TICK_NSEC / 1000; -unsigned long seperateirq = 1; -unsigned long noalarm = 1; -unsigned long force_noalarm = 0; -unsigned long nodotimer = 0; -int leonbare_hz = HZ; - - -void settimer (); -inline void -do_timer (struct leonbare_pt_regs *regs) -{ - unsigned long ticks; - jiffies_64++; - ticks = jiffies - wall_jiffies; - if (ticks) - { - wall_jiffies += ticks; - do - { - ticks--; - xtime.tv_nsec += tick_nsec; - if (xtime.tv_nsec >= 1000000000) - { - xtime.tv_nsec -= 1000000000; - xtime.tv_sec++; - } - } - while (ticks); - } - settimer (); -} - -int -leonbare_alarm (int irq, void *arg, struct leonbare_pt_regs *regs) -{ - settimer (); -} - -extern clock_t (*clock_custom) (void); -clock_t -leonbare_clock_custom () -{ - int hz = leonbare_hz ? leonbare_hz : HZ; - return (clock_t) ((jiffies * (CLOCK_TICK_RATE / hz)) + do_gettimeoffset ()); -} - - -tickerhandler ticker_callback = 0; -int -leonbare_tick (int irq, void *arg, struct leonbare_pt_regs *regs) -{ - unsigned int ctrl; - if (!seperateirq) - { - /* only leon3 comes here */ - if (!noalarm) - { - ctrl = LEON3_GpTimer_Regs->e[1].ctrl; - if (ctrl & LEON3_GPTIMER_IP) - { - leonbare_alarm (irq, arg, regs); - LEON3_GpTimer_Regs->e[1].ctrl = ctrl & ~LEON3_GPTIMER_IP; - } - } - ctrl = LEON3_GpTimer_Regs->e[0].ctrl; - if (!(ctrl & LEON3_GPTIMER_IP)) - { - return 0; - } - LEON3_GpTimer_Regs->e[0].ctrl = ctrl & ~LEON3_GPTIMER_IP; - } - - if (!nodotimer) - { - do_timer (regs); - } - if (ticker_callback) - { - ticker_callback (regs); - } - return 0; -} - -static struct irqaction irqact1 = { (irqhandler) leonbare_tick, 0, 0, 0 }; -static struct irqaction irqact2 = { (irqhandler) leonbare_alarm, 0, 0, 0 }; - -void -leonbare_init_ticks () -{ - int i, irq1 = 0, irq2 = 0; - int hz = leonbare_hz ? leonbare_hz : HZ; - amba_apb_device dev[1]; - - //--------------------- - switch (LEONCOMPAT_VERSION) - { - case 3: - default: - amba_init (); - if (LEON3_GpTimer_Regs && LEON3_IrqCtrl_Regs) - { - if ((LEON3_GpTimer_Regs->config & LEON3_GPTIMER_CONFIG_TIMERMASK) >= - 2 && force_noalarm == 0) - noalarm = 0; - if (!(LEON3_GpTimer_Regs->config & LEON3_GPTIMER_CONFIG_SEPERATE)) - seperateirq = 0; - LEON3_GpTimer_Regs->e[0].val = 0; - LEON3_GpTimer_Regs->e[0].rld = (((CLOCK_TICK_RATE / hz) - 1)); - LEON3_GpTimer_Regs->e[0].ctrl = 0; - LEON3_GpTimer_Regs->e[0].ctrl = - LEON3_GPTIMER_EN | - LEON3_GPTIMER_RL | LEON3_GPTIMER_LD | LEON3_GPTIMER_IRQEN; - irq1 = LEON3_GpTimer_Irq; - irq2 = LEON3_GpTimer_Irq + 1; - } - break; - } - //--------------------- - - if (irq1) - { - clock_custom = leonbare_clock_custom; - chained_catch_interrupt (irq1, &irqact1); - leonbare_enable_irq (irq1); - } - if (irq2 && (!noalarm) && seperateirq) - { - chained_catch_interrupt (irq2, &irqact2); - leonbare_enable_irq (irq2); - } -} - - -//''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' - -static __inline__ unsigned long -do_gettimeoffset () -{ - unsigned long usec = 0; - //--------------------- - switch (LEONCOMPAT_VERSION) - { - case 3: - default: - usec = ((LEON3_GpTimer_Regs->e[0].rld & 0x7fffff) - - (LEON3_GpTimer_Regs->e[0].val & 0x7fffff)); - break; - } - //--------------------- - return usec; -} - -/* get usec (timeval) resolution, - * could use nsec (timespec) because pthread use it (todo) */ -void -do_gettimeofday (struct timeval *tv) -{ - - unsigned long flags; - unsigned long seq; - unsigned long usec, sec; - - do - { - unsigned long lost; - seq = jiffies; - - usec = do_gettimeoffset (); - lost = jiffies - wall_jiffies; - - if (unlikely (lost)) - { - usec += lost * tick_usec; - } - - sec = xtime.tv_sec; - usec += (xtime.tv_nsec / 1000); - } - while (seq != jiffies); - - while (usec >= 1000000) - { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; -} - -int -gettimeofday (struct timeval *__p, void *__tz) -{ - do_gettimeofday (__p); - return 0; -} - -//''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' - -static int -do_settimeofday (struct timespec *tv) -{ - time_t sec = tv->tv_sec; - long nsec = tv->tv_nsec; - - if ((unsigned long) nsec >= NSEC_PER_SEC) - return EINVAL; - - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * made, and then undo it! - */ - nsec -= 1000 * (do_gettimeoffset () + - (jiffies - wall_jiffies) * (USEC_PER_SEC / HZ)); - - set_normalized_timespec (&xtime, sec, nsec); - return 0; -} - -int -settimeofday (const struct timeval *tv, const struct timezone *tz) -{ - struct timespec ts; - ts.tv_sec = tv->tv_sec; - ts.tv_nsec = tv->tv_usec * NSEC_PER_USEC; - return do_settimeofday (&ts); -} |