From 8a15c2d10b0b784f0cfba1240f06a4d933b975fa Mon Sep 17 00:00:00 2001 From: Peter Tyser Date: Mon, 12 Apr 2010 22:28:15 -0500 Subject: avr32: Move cpu/at32ap/* to arch/avr32/cpu/* Signed-off-by: Peter Tyser --- cpu/at32ap/interrupts.c | 150 ------------------------------------------------ 1 file changed, 150 deletions(-) delete mode 100644 cpu/at32ap/interrupts.c (limited to 'cpu/at32ap/interrupts.c') diff --git a/cpu/at32ap/interrupts.c b/cpu/at32ap/interrupts.c deleted file mode 100644 index c6d8d16..0000000 --- a/cpu/at32ap/interrupts.c +++ /dev/null @@ -1,150 +0,0 @@ -/* - * Copyright (C) 2004-2006 Atmel Corporation - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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 2 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, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ -#include -#include - -#include -#include -#include -#include - -#include - -#define HANDLER_MASK 0x00ffffff -#define INTLEV_SHIFT 30 -#define INTLEV_MASK 0x00000003 - -DECLARE_GLOBAL_DATA_PTR; - -/* Incremented whenever COUNT reaches 0xffffffff by timer_interrupt_handler */ -volatile unsigned long timer_overflow; - -/* - * Instead of dividing by get_tbclk(), multiply by this constant and - * right-shift the result by 32 bits. - */ -static unsigned long tb_factor; - -unsigned long get_tbclk(void) -{ - return gd->cpu_hz; -} - -unsigned long long get_ticks(void) -{ - unsigned long lo, hi_now, hi_prev; - - do { - hi_prev = timer_overflow; - lo = sysreg_read(COUNT); - hi_now = timer_overflow; - } while (hi_prev != hi_now); - - return ((unsigned long long)hi_now << 32) | lo; -} - -void reset_timer(void) -{ - sysreg_write(COUNT, 0); - cpu_sync_pipeline(); /* process any pending interrupts */ - timer_overflow = 0; -} - -unsigned long get_timer(unsigned long base) -{ - u64 now = get_ticks(); - - now *= tb_factor; - return (unsigned long)(now >> 32) - base; -} - -void set_timer(unsigned long t) -{ - unsigned long long ticks = t; - unsigned long lo, hi, hi_new; - - ticks = (ticks * get_tbclk()) / CONFIG_SYS_HZ; - hi = ticks >> 32; - lo = ticks & 0xffffffffUL; - - do { - timer_overflow = hi; - sysreg_write(COUNT, lo); - hi_new = timer_overflow; - } while (hi_new != hi); -} - -/* - * For short delays only. It will overflow after a few seconds. - */ -void __udelay(unsigned long usec) -{ - unsigned long cycles; - unsigned long base; - unsigned long now; - - base = sysreg_read(COUNT); - cycles = ((usec * (get_tbclk() / 10000)) + 50) / 100; - - do { - now = sysreg_read(COUNT); - } while ((now - base) < cycles); -} - -static int set_interrupt_handler(unsigned int nr, void (*handler)(void), - unsigned int priority) -{ - extern void _evba(void); - unsigned long intpr; - unsigned long handler_addr = (unsigned long)handler; - - handler_addr -= (unsigned long)&_evba; - - if ((handler_addr & HANDLER_MASK) != handler_addr - || (priority & INTLEV_MASK) != priority) - return -EINVAL; - - intpr = (handler_addr & HANDLER_MASK); - intpr |= (priority & INTLEV_MASK) << INTLEV_SHIFT; - writel(intpr, (void *)INTC_BASE + 4 * nr); - - return 0; -} - -void timer_init(void) -{ - extern void timer_interrupt_handler(void); - u64 tmp; - - sysreg_write(COUNT, 0); - - tmp = (u64)CONFIG_SYS_HZ << 32; - tmp += gd->cpu_hz / 2; - do_div(tmp, gd->cpu_hz); - tb_factor = (u32)tmp; - - if (set_interrupt_handler(0, &timer_interrupt_handler, 3)) - return; - - /* For all practical purposes, this gives us an overflow interrupt */ - sysreg_write(COMPARE, 0xffffffff); -} -- cgit v1.1