[src/trunk]: src/sys/arch/arm/fdt Return the real interrupt handle from gic_f...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e434ee9a8bec
branches:  trunk
changeset: 324672:e434ee9a8bec
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sun Jul 15 13:34:43 2018 +0000

description:
Return the real interrupt handle from gic_fdt_establish

diffstat:

 sys/arch/arm/fdt/gic_fdt.c |  35 ++++++++++++++++++++++-------------
 1 files changed, 22 insertions(+), 13 deletions(-)

diffs (74 lines):

diff -r 7585847c6ab2 -r e434ee9a8bec sys/arch/arm/fdt/gic_fdt.c
--- a/sys/arch/arm/fdt/gic_fdt.c        Sun Jul 15 13:24:05 2018 +0000
+++ b/sys/arch/arm/fdt/gic_fdt.c        Sun Jul 15 13:34:43 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gic_fdt.c,v 1.11 2018/07/03 12:12:03 jmcneill Exp $ */
+/* $NetBSD: gic_fdt.c,v 1.12 2018/07/15 13:34:43 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015-2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gic_fdt.c,v 1.11 2018/07/03 12:12:03 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gic_fdt.c,v 1.12 2018/07/15 13:34:43 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -37,6 +37,7 @@
 #include <sys/kernel.h>
 #include <sys/lwp.h>
 #include <sys/kmem.h>
+#include <sys/queue.h>
 
 #include <arm/cortex/gic_intr.h>
 #include <arm/cortex/mpcore_var.h>
@@ -238,28 +239,36 @@
        firqh->ih_arg = arg;
        TAILQ_INSERT_TAIL(&firq->intr_handlers, firqh, ih_next);
 
-       return firqh;
+       return firq->intr_ih;
 }
 
 static void
 gic_fdt_disestablish(device_t dev, void *ih)
 {
        struct gic_fdt_softc * const sc = device_private(dev);
-       struct gic_fdt_irqhandler *firqh = ih;
-       struct gic_fdt_irq *firq = firqh->ih_irq;
-       const int irq = firq->intr_irq;
-
-       KASSERT(firq->intr_refcnt > 0);
+       struct gic_fdt_irqhandler *firqh;
+       struct gic_fdt_irq *firq;
+       u_int n;
 
-       TAILQ_REMOVE(&firq->intr_handlers, firqh, ih_next);
-       kmem_free(firqh, sizeof(*firqh));
+       for (n = 0; n < GIC_MAXIRQ; n++) {
+               firq = sc->sc_irq[n];
+               if (firq->intr_ih != ih)
+                       continue;
 
-       firq->intr_refcnt--;
-       if (firq->intr_refcnt == 0) {
+               KASSERT(firq->intr_refcnt > 0);
+
+               if (firq->intr_refcnt > 1)
+                       panic("%s: cannot disestablish shared irq", __func__);
+
+               firqh = TAILQ_FIRST(&firq->intr_handlers);
+               kmem_free(firqh, sizeof(*firqh));
                intr_disestablish(firq->intr_ih);
                kmem_free(firq, sizeof(*firq));
-               sc->sc_irq[irq] = NULL;
+               sc->sc_irq[n] = NULL;
+               return;
        }
+
+       panic("%s: interrupt not established", __func__);
 }
 
 static int