[src/trunk]: src/sys/dev/fdt Add CPUs ("/cpus" node) driver. CPUs is a contai...

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

details:   https://anonhg.NetBSD.org/src/rev/a0ceb5bea455
branches:  trunk
changeset: 353910:a0ceb5bea455
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sun May 28 00:38:40 2017 +0000

description:
Add CPUs ("/cpus" node) driver. CPUs is a container of cpu nodes.

diffstat:

 sys/dev/fdt/cpus.c    |  76 +++++++++++++++++++++++++++++++++++++++++++++++++++
 sys/dev/fdt/files.fdt |   6 +++-
 2 files changed, 81 insertions(+), 1 deletions(-)

diffs (97 lines):

diff -r 4592f987fc92 -r a0ceb5bea455 sys/dev/fdt/cpus.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/fdt/cpus.c        Sun May 28 00:38:40 2017 +0000
@@ -0,0 +1,76 @@
+/* $NetBSD: cpus.c,v 1.1 2017/05/28 00:38:40 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: cpus.c,v 1.1 2017/05/28 00:38:40 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/kmem.h>
+
+#include <dev/fdt/fdtvar.h>
+
+static int     cpus_match(device_t, cfdata_t, void *);
+static void    cpus_attach(device_t, device_t, void *);
+
+CFATTACH_DECL_NEW(cpus, 0, cpus_match, cpus_attach, NULL, NULL);
+
+static int
+cpus_match(device_t parent, cfdata_t cf, void *aux)
+{
+       struct fdt_attach_args * const faa = aux;
+
+       return OF_finddevice("/cpus") == faa->faa_phandle;
+}
+
+static void
+cpus_attach(device_t parent, device_t self, void *aux)
+{
+       struct fdt_attach_args * const faa = aux;
+       const int phandle = faa->faa_phandle;
+       int child;
+
+       aprint_naive("\n");
+       aprint_normal("\n");
+
+       for (child = OF_child(phandle); child; child = OF_peer(child)) {
+               if (!fdtbus_status_okay(child))
+                       continue;
+
+               struct fdt_attach_args cfaa = *faa;
+               cfaa.faa_phandle = child;
+               cfaa.faa_name = "cpu";
+               cfaa.faa_quiet = 0;
+
+               config_found(self, &cfaa, fdtbus_print);
+       }
+}
diff -r 4592f987fc92 -r a0ceb5bea455 sys/dev/fdt/files.fdt
--- a/sys/dev/fdt/files.fdt     Sun May 28 00:38:01 2017 +0000
+++ b/sys/dev/fdt/files.fdt     Sun May 28 00:38:40 2017 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.fdt,v 1.12 2017/04/29 11:00:56 jmcneill Exp $
+# $NetBSD: files.fdt,v 1.13 2017/05/28 00:38:40 jmcneill Exp $
 
 include        "external/bsd/libfdt/conf/files.libfdt"
 
@@ -33,3 +33,7 @@
 file   dev/fdt/fdt_reset.c                     fdtbus
 file   dev/fdt/fdt_rtc.c                       fdtbus
 file   dev/fdt/fdt_pinctrl.c                   fdtbus
+
+device cpus { } : fdtbus
+attach cpus at fdt
+file   dev/fdt/cpus.c                          cpus