[PATCH 2/3] openfirmware: adds sysfs nodes for openfirmware devices

[Jeffrey Mahoney]

This patch adds sysfs nodes that the hotplug userspace can use to load the
appropriate modules.

In order for hotplug to work with macio devices, patches to module-init-tools
and hotplug must be applied. Those patches are available at:

ftp://ftp.suse.com/pub/people/jeffm/linux/macio-hotplug/

Signed-off-by: Jeff Mahoney <jeffm@xxxxxxxx>

diff -rupN -X dontdiff linux-2.6.8/drivers/macintosh/macio_sysfs.c linux-2.6.8.devel/drivers/macintosh/macio_sysfs.c
--- linux-2.6.8/drivers/macintosh/macio_sysfs.c	1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.8.devel/drivers/macintosh/macio_sysfs.c	2004-09-16 17:12:37.244919704 -0400
@@ -0,0 +1,49 @@
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/stat.h>
+#include <asm/macio.h>
+
+
+#define macio_config_of_attr(field, format_string)              \
+static ssize_t                                                  \
+field##_show (struct device *dev, char *buf)                    \
+{                                                               \
+    struct macio_dev *mdev = to_macio_device (dev);             \
+    return sprintf (buf, format_string, mdev->ofdev.node->field);     \
+}
+
+static ssize_t
+compatible_show (struct device *dev, char *buf)        
+{
+        struct of_device *of;
+        char *compat;
+        int cplen;
+        int length = 0;
+        
+        of = &to_macio_device (dev)->ofdev;
+	compat = (char *) get_property(of->node, "compatible", &cplen);
+	if (!compat) {
+		*buf = '\0';
+		return 0;
+	}
+	while (cplen > 0) {
+		int l;
+		length += sprintf (buf, "%s%s", length ? "," : "", compat);
+		buf += length;
+		l = strlen (compat) + 1;
+		compat += l;
+		cplen -= l;
+	}
+
+	return length;
+}
+
+macio_config_of_attr (name, "%s");
+macio_config_of_attr (type, "%s");
+
+struct device_attribute macio_dev_attrs[] = {
+	__ATTR_RO(name),
+	__ATTR_RO(type),
+	__ATTR_RO(compatible),
+	__ATTR_NULL
+};
diff -rupN -X dontdiff linux-2.6.8/drivers/macintosh/Makefile linux-2.6.8.devel/drivers/macintosh/Makefile
--- linux-2.6.8/drivers/macintosh/Makefile	2004-08-14 01:37:40.000000000 -0400
+++ linux-2.6.8.devel/drivers/macintosh/Makefile	2004-09-16 17:12:37.252918488 -0400
@@ -4,7 +4,7 @@
 
 # Each configuration option enables a list of files.
 
-obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o
+obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o macio_sysfs.o
 
 obj-$(CONFIG_PMAC_PBOOK)	+= mediabay.o
 obj-$(CONFIG_MAC_SERIAL)	+= macserial.o

diff -rupN -X dontdiff linux-2.6.8/drivers/macintosh/macio_asic.c linux-2.6.8.devel/drivers/macintosh/macio_asic.c
--- linux-2.6.8/drivers/macintosh/macio_asic.c	2004-08-14 01:36:45.000000000 -0400
+++ linux-2.6.8.devel/drivers/macintosh/macio_asic.c	2004-09-16 17:12:37.242920008 -0400
@@ -126,10 +126,13 @@ static int macio_device_resume(struct de
 	return 0;
 }
 
+extern struct device_attribute macio_dev_attrs[];
+
 struct bus_type macio_bus_type = {
        .name	= "macio",
        .match	= macio_bus_match,
        .suspend	= macio_device_suspend,
        .resume	= macio_device_resume,
+       .dev_attrs = macio_dev_attrs,
 };
 
 static int __init macio_bus_driver_init(void)
-- 
Jeff Mahoney
SuSE Labs
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