d6fa4d5b80
-Add interrupt controller and timer support for qemu virt machine -Switch tty read to irq driven as well
38 lines
900 B
C
38 lines
900 B
C
/*
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* Copyright (c) 2021 Travis Geiselbrecht
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*
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* Use of this source code is governed by a MIT-style
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* license that can be found in the LICENSE file or at
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* https://opensource.org/licenses/MIT
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*/
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#include <arch/m68k.h>
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#include <inttypes.h>
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#include <lk/debug.h>
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#include <lk/trace.h>
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#include <kernel/thread.h>
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#define LOCAL_TRACE 0
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// defined in platform interrupt controller
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extern enum handler_return m68k_platform_irq(uint8_t irq);
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void m68k_exception(void *frame, uint8_t code) {
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LTRACEF("frame %p, code %hhu\n", frame, code);
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panic("unimplemented exception %hhu\n", code);
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}
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void m68k_irq(void *frame, uint8_t code) {
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LTRACEF("frame %p, code %hhu\n", frame, code);
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if (unlikely(code == 0)) {
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// spurious interrupt
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return;
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}
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enum handler_return ret = m68k_platform_irq(code);
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if (ret == INT_RESCHEDULE) {
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thread_preempt();
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}
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}
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