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[src/trunk]: src/sys/arch/arm If an SGI or PPI is established after interrupt...
details: https://anonhg.NetBSD.org/src/rev/3fd337ea2fad
branches: trunk
changeset: 987423:3fd337ea2fad
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sun Sep 26 13:38:49 2021 +0000
description:
If an SGI or PPI is established after interrupts are enabled, make sure
we unblock the source on _all_ CPUs and not just the CPU that is
establishing the interrupt.
diffstat:
sys/arch/arm/cortex/gic.c | 5 +++--
sys/arch/arm/cortex/gicv3.c | 7 ++++---
sys/arch/arm/pic/pic.c | 23 +++++++++++++++++++----
sys/arch/arm/pic/picvar.h | 3 ++-
4 files changed, 28 insertions(+), 10 deletions(-)
diffs (123 lines):
diff -r 539f31077fc7 -r 3fd337ea2fad sys/arch/arm/cortex/gic.c
--- a/sys/arch/arm/cortex/gic.c Sun Sep 26 13:37:36 2021 +0000
+++ b/sys/arch/arm/cortex/gic.c Sun Sep 26 13:38:49 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gic.c,v 1.49 2021/08/10 17:12:31 jmcneill Exp $ */
+/* $NetBSD: gic.c,v 1.50 2021/09/26 13:38:50 jmcneill Exp $ */
/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -35,7 +35,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gic.c,v 1.49 2021/08/10 17:12:31 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gic.c,v 1.50 2021/09/26 13:38:50 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -462,6 +462,7 @@
* default.
*/
is->is_mpsafe = true;
+ is->is_percpu = true;
#endif
}
diff -r 539f31077fc7 -r 3fd337ea2fad sys/arch/arm/cortex/gicv3.c
--- a/sys/arch/arm/cortex/gicv3.c Sun Sep 26 13:37:36 2021 +0000
+++ b/sys/arch/arm/cortex/gicv3.c Sun Sep 26 13:38:49 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gicv3.c,v 1.47 2021/09/11 01:49:11 jmcneill Exp $ */
+/* $NetBSD: gicv3.c,v 1.48 2021/09/26 13:38:50 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -32,7 +32,7 @@
#define _INTR_PRIVATE
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.47 2021/09/11 01:49:11 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gicv3.c,v 1.48 2021/09/26 13:38:50 jmcneill Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -185,8 +185,9 @@
const u_int icfg_shift = (is->is_irq & 0xf) * 2;
if (group == 0) {
- /* SGIs and PPIs are always MP-safe */
+ /* SGIs and PPIs are per-CPU and always MP-safe */
is->is_mpsafe = true;
+ is->is_percpu = true;
/* Update interrupt configuration and priority on all redistributors */
for (n = 0; n < sc->sc_bsh_r_count; n++) {
diff -r 539f31077fc7 -r 3fd337ea2fad sys/arch/arm/pic/pic.c
--- a/sys/arch/arm/pic/pic.c Sun Sep 26 13:37:36 2021 +0000
+++ b/sys/arch/arm/pic/pic.c Sun Sep 26 13:38:49 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pic.c,v 1.71 2021/08/08 19:28:08 skrll Exp $ */
+/* $NetBSD: pic.c,v 1.72 2021/09/26 13:38:49 jmcneill Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -33,7 +33,7 @@
#include "opt_multiprocessor.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pic.c,v 1.71 2021/08/08 19:28:08 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pic.c,v 1.72 2021/09/26 13:38:49 jmcneill Exp $");
#include <sys/param.h>
#include <sys/atomic.h>
@@ -704,6 +704,16 @@
pcpu->pcpu_name, is->is_source);
}
+static void
+pic_unblock_percpu(void *arg1, void *arg2)
+{
+ struct pic_softc *pic = arg1;
+ struct intrsource *is = arg2;
+
+ (*pic->pic_ops->pic_unblock_irqs)(pic, is->is_irq & ~0x1f,
+ __BIT(is->is_irq & 0x1f));
+}
+
void *
pic_establish_intr(struct pic_softc *pic, int irq, int ipl, int type,
int (*func)(void *), void *arg, const char *xname)
@@ -780,8 +790,13 @@
(*pic->pic_ops->pic_establish_irq)(pic, is);
unblock:
- (*pic->pic_ops->pic_unblock_irqs)(pic, is->is_irq & ~0x1f,
- __BIT(is->is_irq & 0x1f));
+ if (cold || !is->is_mpsafe) {
+ (*pic->pic_ops->pic_unblock_irqs)(pic, is->is_irq & ~0x1f,
+ __BIT(is->is_irq & 0x1f));
+ } else {
+ uint64_t xc = xc_broadcast(0, pic_unblock_percpu, pic, is);
+ xc_wait(xc);
+ }
if (xname) {
if (is->is_xname == NULL)
diff -r 539f31077fc7 -r 3fd337ea2fad sys/arch/arm/pic/picvar.h
--- a/sys/arch/arm/pic/picvar.h Sun Sep 26 13:37:36 2021 +0000
+++ b/sys/arch/arm/pic/picvar.h Sun Sep 26 13:38:49 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: picvar.h,v 1.36 2021/09/20 21:05:15 jmcneill Exp $ */
+/* $NetBSD: picvar.h,v 1.37 2021/09/26 13:38:49 jmcneill Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
@@ -128,6 +128,7 @@
char is_source[16];
char *is_xname;
uint32_t is_mask_count;
+ bool is_percpu;
};
struct pic_percpu {
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