| 0,0 → 1,98 |
|---|
| /* |
| * Copyright (c) 2006 Martin Decky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup ppc64interrupt |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <ddi/irq.h> |
| #include <interrupt.h> |
| #include <arch/interrupt.h> |
| #include <arch/types.h> |
| #include <arch.h> |
| #include <time/clock.h> |
| #include <ipc/sysipc.h> |
| #include <arch/drivers/pic.h> |
| #include <arch/mm/tlb.h> |
| #include <print.h> |
| |
| |
| void start_decrementer(void) |
| { |
| asm volatile ( |
| "mtdec %0\n" |
| : |
| : "r" (1000) |
| ); |
| } |
| |
| |
| /** Handler of external interrupts */ |
| static void exception_external(int n, istate_t *istate) |
| { |
| int inum; |
| |
| while ((inum = pic_get_pending()) != -1) { |
| irq_t *irq = irq_dispatch_and_lock(inum); |
| if (irq) { |
| /* |
| * The IRQ handler was found. |
| */ |
| irq->handler(irq, irq->arg); |
| spinlock_unlock(&irq->lock); |
| } else { |
| /* |
| * Spurious interrupt. |
| */ |
| #ifdef CONFIG_DEBUG |
| printf("cpu%d: spurious interrupt (inum=%d)\n", CPU->id, inum); |
| #endif |
| } |
| pic_ack_interrupt(inum); |
| } |
| } |
| |
| |
| static void exception_decrementer(int n, istate_t *istate) |
| { |
| clock(); |
| start_decrementer(); |
| } |
| |
| |
| /* Initialize basic tables for exception dispatching */ |
| void interrupt_init(void) |
| { |
| exc_register(VECTOR_EXTERNAL, "external", exception_external); |
| exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer); |
| } |
| |
| /** @} |
| */ |