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[Qemu-devel] [PATCH v2 3/7] target-xtensa: implement external interrupt
From: |
Max Filippov |
Subject: |
[Qemu-devel] [PATCH v2 3/7] target-xtensa: implement external interrupt mapping |
Date: |
Sun, 16 Oct 2011 02:56:03 +0400 |
Xtensa cores may have different mapping of external interrupt pins to
internal IRQ numers. Implement API to acquire core IRQ by its external
interrupt number.
Signed-off-by: Max Filippov <address@hidden>
---
hw/xtensa_pic.c | 12 ++++++++++++
target-xtensa/cpu.h | 3 +++
2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/hw/xtensa_pic.c b/hw/xtensa_pic.c
index e5085ea..93e28fd 100644
--- a/hw/xtensa_pic.c
+++ b/hw/xtensa_pic.c
@@ -157,3 +157,15 @@ void xtensa_irq_init(CPUState *env)
qemu_new_timer_ns(vm_clock, &xtensa_ccompare_cb, env);
}
}
+
+void *xtensa_get_extint(CPUState *env, unsigned extint)
+{
+ if (extint < env->config->nextint) {
+ unsigned irq = env->config->extint[extint];
+ return env->irq_inputs[irq];
+ } else {
+ qemu_log("%s: trying to acquire invalid external interrupt %d\n",
+ __func__, extint);
+ return NULL;
+ }
+}
diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h
index df168d5..9d36c1b 100644
--- a/target-xtensa/cpu.h
+++ b/target-xtensa/cpu.h
@@ -277,6 +277,8 @@ typedef struct XtensaConfig {
} interrupt[MAX_NINTERRUPT];
unsigned nccompare;
uint32_t timerint[MAX_NCCOMPARE];
+ unsigned nextint;
+ unsigned extint[MAX_NINTERRUPT];
uint32_t clock_freq_khz;
xtensa_tlb itlb;
@@ -318,6 +320,7 @@ int cpu_xtensa_exec(CPUXtensaState *s);
void do_interrupt(CPUXtensaState *s);
void check_interrupts(CPUXtensaState *s);
void xtensa_irq_init(CPUState *env);
+void *xtensa_get_extint(CPUState *env, unsigned extint);
void xtensa_advance_ccount(CPUState *env, uint32_t d);
void xtensa_timer_irq(CPUState *env, uint32_t id, uint32_t active);
void xtensa_rearm_ccompare_timer(CPUState *env);
--
1.7.6.4
- [Qemu-devel] [PATCH v2 0/7] target-xtensa: add overlay parsing header and convert hand-written core definitions to use overlays, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 1/7] target-xtensa: increase xtensa options accuracy, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 3/7] target-xtensa: implement external interrupt mapping,
Max Filippov <=
- [Qemu-devel] [PATCH v2 7/7] target-xtensa: rename dc232b board to sim, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 4/7] target-xtensa: extract core configuration from overlay, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 6/7] target-xtensa: add fsf core, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 5/7] target-xtensa: add dc232b core, Max Filippov, 2011/10/15
- [Qemu-devel] [PATCH v2 2/7] target-xtensa: remove hand-written xtensa cores implementations, Max Filippov, 2011/10/15
- Re: [Qemu-devel] [PATCH v2 0/7] target-xtensa: add overlay parsing header and convert hand-written core definitions to use overlays, Blue Swirl, 2011/10/16