68a9101237
* or1k/Makefile.in: Add libor1k
* or1k/README: New file
* or1k/caches-asm.S: New file
* or1k/exceptions-asm.S: New file
* or1k/exceptions.c: New file
* or1k/impure.c: New file
* or1k/include/or1k-nop.h: New file
* or1k/include/or1k-support.h: New file
* or1k/interrupts-asm.S: New file
* or1k/interrupts.c: New file
* or1k/mmu-asm.S: New file
* or1k/or1k-internals.h: New file
* or1k/or1k_uart.c: New file
* or1k/or1k_uart.h: New file
* or1k/outbyte.S: New file
* or1k/sbrk.c: New file
* or1k/sync-asm.S: New file
* or1k/syscalls.c: New file
* or1k/timer.c: New file
* or1k/util.c: New file
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* interrupts.c -- interrupt handling for OpenRISC 1000.
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*
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* Copyright (c) 2014 Authors
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*
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* Contributor Stefan Wallentowitz <stefan.wallentowitz@tum.de>
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*
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* The authors hereby grant permission to use, copy, modify, distribute,
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* and license this software and its documentation for any purpose, provided
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* that existing copyright notices are retained in all copies and that this
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* notice is included verbatim in any distributions. No written agreement,
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* license, or royalty fee is required for any of the authorized uses.
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* Modifications to this software may be copyrighted by their authors
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* and need not follow the licensing terms described here, provided that
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* the new terms are clearly indicated on the first page of each file where
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* they apply.
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*/
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#include "include/or1k-support.h"
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#include "include/or1k-sprs.h"
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#include <stdint.h>
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#include "or1k-internals.h"
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#ifdef __OR1K_MULTICORE__
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or1k_interrupt_handler_table_t *_or1k_interrupt_handler_table;
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or1k_interrupt_handler_data_ptr_table_t *_or1k_interrupt_handler_data_ptr_table;
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#else
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or1k_interrupt_handler_table_t _or1k_interrupt_handler_table;
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or1k_interrupt_handler_data_ptr_table_t _or1k_interrupt_handler_data_ptr_table;
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#endif
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void or1k_interrupt_handler_add(uint32_t id,
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or1k_interrupt_handler_fptr handler,
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void *data_ptr)
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{
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#ifdef __OR1K_MULTICORE__
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_or1k_interrupt_handler_table[or1k_coreid()][id] = handler;
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_or1k_interrupt_handler_data_ptr_table[or1k_coreid()][id] = (uint32_t) data_ptr;
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#else
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_or1k_interrupt_handler_table[id] = handler;
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_or1k_interrupt_handler_data_ptr_table[id] = (uint32_t) data_ptr;
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#endif
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}
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void
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or1k_interrupts_enable(void)
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{
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uint32_t sr = or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
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sr = OR1K_SPR_SYS_SR_IEE_SET(sr, 1);
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or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, sr);
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}
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uint32_t
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or1k_interrupts_disable(void)
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{
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uint32_t oldsr, newsr;
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oldsr= or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
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newsr = OR1K_SPR_SYS_SR_IEE_SET(oldsr, 0);
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or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, newsr);
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return OR1K_SPR_SYS_SR_IEE_GET(oldsr);
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}
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void
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or1k_interrupts_restore(uint32_t sr_iee)
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{
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uint32_t sr = or1k_mfspr(OR1K_SPR_SYS_SR_ADDR);
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sr = OR1K_SPR_SYS_SR_IEE_SET(sr, sr_iee);
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or1k_mtspr(OR1K_SPR_SYS_SR_ADDR, sr);
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}
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