add intrmap_one, some temp code to help us write pci_intr_establish_cpu.

it means we can do quick hacks to existing drivers to test interrupts
on multiple cpus. emphasis on quick and hacks.

ok jmatthew@, who will also ok the removal of it at the right time.

1 files changed, 15 insertions, 1 deletions

diff --git a/sys/kern/kern_intrmap.c b/sys/kern/kern_intrmap.c
index 183531e20b1..4207456090c 100644
--- a/sys/kern/kern_intrmap.c
+++ b/sys/kern/kern_intrmap.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: kern_intrmap.c,v 1.2 2020/06/17 03:01:26 dlg Exp $ */
+/* $OpenBSD: kern_intrmap.c,v 1.3 2020/06/23 01:40:03 dlg Exp $ */
 
 /*
  * Copyright (c) 1980, 1986, 1993
@@ -345,3 +345,17 @@ intrmap_cpu(const struct intrmap *im, unsigned int ring)
 	    " (intrmap %p)", icpu, ring, im);
 	return (ic->ic_cpumap[icpu]);
 }
+
+struct cpu_info *
+intrmap_one(const struct device *dv)
+{
+	unsigned int unit = dv->dv_unit;
+	struct intrmap_cpus *ic;
+	struct cpu_info *ci;
+
+	ic = intrmap_cpus_get();
+	ci = ic->ic_cpumap[unit % ic->ic_count];
+	intrmap_cpus_put(ic);
+
+	return (ci);
+}