diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2008-07-15 18:44:34 +0100 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2008-07-15 18:44:34 +0100 |
commit | 315806cb19f9d375dccbc2d60fa14e16afdcd5ac (patch) | |
tree | effe89f2f8d49bf62018ad5717a0d7c8c5725277 /arch/mips/mips-boards/generic/time.c | |
parent | eda49eeebf263f3a34f6968959fc2e4825b42beb (diff) |
[MIPS] Malta: Cleanup organization of code into directories.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mips-boards/generic/time.c')
-rw-r--r-- | arch/mips/mips-boards/generic/time.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c deleted file mode 100644 index 0b97d47691fc..000000000000 --- a/arch/mips/mips-boards/generic/time.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope 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, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Setting up the clock on the MIPS boards. - */ - -#include <linux/types.h> -#include <linux/init.h> -#include <linux/kernel_stat.h> -#include <linux/sched.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/time.h> -#include <linux/timex.h> -#include <linux/mc146818rtc.h> - -#include <asm/mipsregs.h> -#include <asm/mipsmtregs.h> -#include <asm/hardirq.h> -#include <asm/i8253.h> -#include <asm/irq.h> -#include <asm/div64.h> -#include <asm/cpu.h> -#include <asm/time.h> -#include <asm/mc146818-time.h> -#include <asm/msc01_ic.h> - -#include <asm/mips-boards/generic.h> -#include <asm/mips-boards/prom.h> - -#include <asm/mips-boards/maltaint.h> - -unsigned long cpu_khz; - -static int mips_cpu_timer_irq; -static int mips_cpu_perf_irq; -extern int cp0_perfcount_irq; - -static void mips_timer_dispatch(void) -{ - do_IRQ(mips_cpu_timer_irq); -} - -static void mips_perf_dispatch(void) -{ - do_IRQ(mips_cpu_perf_irq); -} - -/* - * Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect - */ -static unsigned int __init estimate_cpu_frequency(void) -{ - unsigned int prid = read_c0_prid() & 0xffff00; - unsigned int count; - - unsigned long flags; - unsigned int start; - - local_irq_save(flags); - - /* Start counter exactly on falling edge of update flag */ - while (CMOS_READ(RTC_REG_A) & RTC_UIP); - while (!(CMOS_READ(RTC_REG_A) & RTC_UIP)); - - /* Start r4k counter. */ - start = read_c0_count(); - - /* Read counter exactly on falling edge of update flag */ - while (CMOS_READ(RTC_REG_A) & RTC_UIP); - while (!(CMOS_READ(RTC_REG_A) & RTC_UIP)); - - count = read_c0_count() - start; - - /* restore interrupts */ - local_irq_restore(flags); - - mips_hpt_frequency = count; - if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) && - (prid != (PRID_COMP_MIPS | PRID_IMP_25KF))) - count *= 2; - - count += 5000; /* round */ - count -= count%10000; - - return count; -} - -unsigned long read_persistent_clock(void) -{ - return mc146818_get_cmos_time(); -} - -static void __init plat_perf_setup(void) -{ -#ifdef MSC01E_INT_BASE - if (cpu_has_veic) { - set_vi_handler(MSC01E_INT_PERFCTR, mips_perf_dispatch); - mips_cpu_perf_irq = MSC01E_INT_BASE + MSC01E_INT_PERFCTR; - } else -#endif - if (cp0_perfcount_irq >= 0) { - if (cpu_has_vint) - set_vi_handler(cp0_perfcount_irq, mips_perf_dispatch); - mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; -#ifdef CONFIG_SMP - set_irq_handler(mips_cpu_perf_irq, handle_percpu_irq); -#endif - } -} - -unsigned int __cpuinit get_c0_compare_int(void) -{ -#ifdef MSC01E_INT_BASE - if (cpu_has_veic) { - set_vi_handler(MSC01E_INT_CPUCTR, mips_timer_dispatch); - mips_cpu_timer_irq = MSC01E_INT_BASE + MSC01E_INT_CPUCTR; - } else -#endif - { - if (cpu_has_vint) - set_vi_handler(cp0_compare_irq, mips_timer_dispatch); - mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq; - } - - return mips_cpu_timer_irq; -} - -void __init plat_time_init(void) -{ - unsigned int est_freq; - - /* Set Data mode - binary. */ - CMOS_WRITE(CMOS_READ(RTC_CONTROL) | RTC_DM_BINARY, RTC_CONTROL); - - est_freq = estimate_cpu_frequency(); - - printk("CPU frequency %d.%02d MHz\n", est_freq/1000000, - (est_freq%1000000)*100/1000000); - - cpu_khz = est_freq / 1000; - - mips_scroll_message(); -#ifdef CONFIG_I8253 /* Only Malta has a PIT */ - setup_pit_timer(); -#endif - - plat_perf_setup(); -} |