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Subject[PATCH 2/3] openfirmware: adds sysfs nodes for openfirmware devices
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@suse.com>

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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