[src/trunk]: src/sys/arch/arm/pic Update pic_add to allocate and return an ir...

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

details:   https://anonhg.NetBSD.org/src/rev/e84238930293
branches:  trunk
changeset: 847500:e84238930293
user:      skrll <skrll%NetBSD.org@localhost>
date:      Tue Dec 24 20:40:09 2019 +0000

description:
Update pic_add to allocate and return an irqbase if passed
PIC_IRQBASE_ALLOC.

diffstat:

 sys/arch/arm/pic/pic.c    |  15 +++++++++++----
 sys/arch/arm/pic/picvar.h |   6 ++++--
 2 files changed, 15 insertions(+), 6 deletions(-)

diffs (84 lines):

diff -r 09c82b9f7229 -r e84238930293 sys/arch/arm/pic/pic.c
--- a/sys/arch/arm/pic/pic.c    Tue Dec 24 20:37:44 2019 +0000
+++ b/sys/arch/arm/pic/pic.c    Tue Dec 24 20:40:09 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pic.c,v 1.51 2019/12/24 20:37:44 skrll Exp $   */
+/*     $NetBSD: pic.c,v 1.52 2019/12/24 20:40:09 skrll 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 1.51 2019/12/24 20:37:44 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pic.c,v 1.52 2019/12/24 20:40:09 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -99,6 +99,7 @@
 
 static kmutex_t pic_lock;
 static size_t pic_sourcebase;
+static int pic_lastbase;
 static struct evcnt pic_deferral_ev =
     EVCNT_INITIALIZER(EVCNT_TYPE_MISC, NULL, "deferred", "intr");
 EVCNT_ATTACH_STATIC(pic_deferral_ev);
@@ -633,7 +634,7 @@
        return 0;
 }
 
-void
+int
 pic_add(struct pic_softc *pic, int irqbase)
 {
        int slot, maybe_slot = -1;
@@ -656,6 +657,9 @@
 #endif /* __HAVE_PIC_PENDING_INTRS && MULTIPROCESSOR */
 
        mutex_enter(&pic_lock);
+       if (irqbase == PIC_IRQBASE_ALLOC) {
+               irqbase = pic_lastbase;
+       }
        for (slot = 0; slot < PIC_MAXPICS; slot++) {
                struct pic_softc * const xpic = pic_list[slot];
                if (xpic == NULL) {
@@ -686,7 +690,8 @@
        KASSERT(pic_sourcebase + pic->pic_maxsources <= PIC_MAXMAXSOURCES);
        sourcebase = pic_sourcebase;
        pic_sourcebase += pic->pic_maxsources;
-
+        if (pic_lastbase < irqbase + pic->pic_maxsources)
+                pic_lastbase = irqbase + pic->pic_maxsources;
        mutex_exit(&pic_lock);
 
        /*
@@ -714,6 +719,8 @@
        KASSERT((pic->pic_cpus != NULL) == (pic->pic_ops->pic_ipi_send != NULL));
 #endif
        pic_list[slot] = pic;
+       
+       return irqbase;
 }
 
 int
diff -r 09c82b9f7229 -r e84238930293 sys/arch/arm/pic/picvar.h
--- a/sys/arch/arm/pic/picvar.h Tue Dec 24 20:37:44 2019 +0000
+++ b/sys/arch/arm/pic/picvar.h Tue Dec 24 20:40:09 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: picvar.h,v 1.25 2019/12/23 15:51:47 jmcneill Exp $     */
+/*     $NetBSD: picvar.h,v 1.26 2019/12/24 20:40:09 skrll Exp $        */
 /*-
  * Copyright (c) 2008 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -186,7 +186,9 @@
 #define        pic_set_priority(ci, newipl)    ((void)((ci)->ci_cpl = (newipl)))
 #endif
 
-void   pic_add(struct pic_softc *, int);
+#define        PIC_IRQBASE_ALLOC       (-2)
+
+int    pic_add(struct pic_softc *, int);
 void   pic_do_pending_int(void);
 #ifdef MULTIPROCESSOR
 int    pic_ipi_ast(void *);