mirrors/Astral
1
0
Fork 0
mirror of https://github.com/Mathewnd/Astral.git synced 2026-10-27 12:48:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

interrupt: basic ipl handling

Browse Source
This commit is contained in:
Matheus
2023-04-23 15:42:08 -03:00
parent ee63940c68
commit 5f84cdec3c
4 changed files with 28 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel-src/sys/interrupt.c
+20 -8
View File
@@ -9,8 +9,18 @@ void interrupt_isr(int vec, context_t *ctx) {
if (isr->func == NULL)
_panic("Unregistered interrupt", ctx);
// TODO ipl check
isr->func(isr, ctx);
if (_cpu()->ipl < isr->priority) {
long oldipl = interrupt_setipl(isr->priority);
bool oldint = interrupt_set(true);
isr->func(isr, ctx);
interrupt_set(false);
_cpu()->intstatus = oldint;
interrupt_setipl(oldipl);
} else {
isr->pending = true;
}
if (isr->eoi)
isr->eoi(isr);
@@ -22,6 +32,7 @@ void interrupt_register(int vector, void (*func)(isr_t *self, context_t *ctx), v
isr->eoi = eoi;
isr->id = (uint64_t)_cpu()->id << 32 | vector;
isr->priority = priority;
isr->pending = false;
}
isr_t *interrupt_allocate(void (*func)(isr_t *self, context_t *ctx), void (*eoi)(isr_t *self), long priority) {
@@ -38,14 +49,15 @@ isr_t *interrupt_allocate(void (*func)(isr_t *self, context_t *ctx), void (*eoi)
return isr;
}
// TODO ipl is thread level, write these when the scheduler is written
long interrupt_setipl(long ipl) {
bool oldintstatus = interrupt_set(false);
long oldipl = _cpu()->ipl;
_cpu()->ipl = ipl;
interrupt_set(oldintstatus);
void interrupt_raiseipl(long newipl) {
__assert(!"Unimplemented");
}
// TODO do pending interrupts
void interrupt_loweripl(long newipl) {
__assert(!"Unimplemented");
return oldipl;
}
void arch_interrupt_disable();