[src/trunk]: src/sys/arch/arm/pic Implement intr_string(9)

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

details:   https://anonhg.NetBSD.org/src/rev/9e782ea6b16a
branches:  trunk
changeset: 993955:9e782ea6b16a
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Fri Oct 12 21:46:32 2018 +0000

description:
Implement intr_string(9)

diffstat:

 sys/arch/arm/pic/pic.c    |  22 ++++++++++++++++++++--
 sys/arch/arm/pic/picvar.h |   5 ++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diffs (69 lines):

diff -r 7a212ceda26a -r 9e782ea6b16a sys/arch/arm/pic/pic.c
--- a/sys/arch/arm/pic/pic.c    Fri Oct 12 21:44:32 2018 +0000
+++ b/sys/arch/arm/pic/pic.c    Fri Oct 12 21:46:32 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pic.c,v 1.44 2018/07/15 16:03:24 jmcneill Exp $        */
+/*     $NetBSD: pic.c,v 1.45 2018/10/12 21:46:32 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 1.44 2018/07/15 16:03:24 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pic.c,v 1.45 2018/10/12 21:46:32 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -883,6 +883,24 @@
        pic_disestablish_source(is);
 }
 
+const char *
+intr_string(intr_handle_t irq, char *buf, size_t len)
+{
+       for (size_t slot = 0; slot < PIC_MAXPICS; slot++) {
+               struct pic_softc * const pic = pic_list[slot];
+               if (pic == NULL || pic->pic_irqbase < 0)
+                       continue;
+               if (pic->pic_irqbase <= irq
+                   && irq < pic->pic_irqbase + pic->pic_maxsources) {
+                       struct intrsource * const is = pic->pic_sources[irq - pic->pic_irqbase];
+                       snprintf(buf, len, "%s %s", pic->pic_name, is->is_source);
+                       return buf;
+               }
+       }
+
+       return NULL;
+}
+
 #ifdef MULTIPROCESSOR
 int
 interrupt_distribute(void *ih, const kcpuset_t *newset, kcpuset_t *oldset)
diff -r 7a212ceda26a -r 9e782ea6b16a sys/arch/arm/pic/picvar.h
--- a/sys/arch/arm/pic/picvar.h Fri Oct 12 21:44:32 2018 +0000
+++ b/sys/arch/arm/pic/picvar.h Fri Oct 12 21:46:32 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: picvar.h,v 1.19 2018/09/08 11:54:26 jmcneill Exp $     */
+/*     $NetBSD: picvar.h,v 1.20 2018/10/12 21:46:32 jmcneill Exp $     */
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -38,6 +38,8 @@
 #include <sys/kcpuset.h>
 #endif
 
+typedef uint32_t       intr_handle_t;          /* for ACPI */
+
 int    _splraise(int);
 int    _spllower(int);
 void   splx(int);
@@ -86,6 +88,7 @@
 void   *intr_establish(int irq, int ipl, int type, int (*func)(void *),
            void *arg);
 void   intr_disestablish(void *);
+const char *intr_string(intr_handle_t, char *, size_t);
 #ifdef MULTIPROCESSOR
 void   intr_cpu_init(struct cpu_info *);
 void   intr_ipi_send(const kcpuset_t *, u_long ipi);