Add an SFP framework which allows SFP providers to provide a

method to access its pages.

ok kettenis@

2 files changed, 48 insertions, 2 deletions

diff --git a/sys/dev/ofw/ofw_misc.c b/sys/dev/ofw/ofw_misc.c
index b988d3b0789..4f4a781a924 100644
--- a/sys/dev/ofw/ofw_misc.c
+++ b/sys/dev/ofw/ofw_misc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ofw_misc.c,v 1.8 2019/09/07 13:27:23 patrick Exp $	*/
+/*	$OpenBSD: ofw_misc.c,v 1.9 2019/09/07 13:29:08 patrick Exp $	*/
 /*
  * Copyright (c) 2017 Mark Kettenis
  *
@@ -241,3 +241,33 @@ i2c_byphandle(uint32_t phandle)
 
 	return NULL;
 }
+
+/*
+ * SFP support.
+ */
+
+LIST_HEAD(, sfp_device) sfp_devices =
+	LIST_HEAD_INITIALIZER(sfp_devices);
+
+void
+sfp_register(struct sfp_device *sd)
+{
+	sd->sd_phandle = OF_getpropint(sd->sd_node, "phandle", 0);
+	if (sd->sd_phandle == 0)
+		return;
+
+	LIST_INSERT_HEAD(&sfp_devices, sd, sd_list);
+}
+
+int
+sfp_get_sffpage(uint32_t phandle, struct if_sffpage *sff)
+{
+	struct sfp_device *sd;
+
+	LIST_FOREACH(sd, &sfp_devices, sd_list) {
+		if (sd->sd_phandle == phandle)
+			return sd->sd_get_sffpage(sd->sd_cookie, sff);
+	}
+
+	return ENXIO;
+}
diff --git a/sys/dev/ofw/ofw_misc.h b/sys/dev/ofw/ofw_misc.h
index c97e04f0b48..7a572dbd7d5 100644
--- a/sys/dev/ofw/ofw_misc.h
+++ b/sys/dev/ofw/ofw_misc.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ofw_misc.h,v 1.5 2019/09/07 13:27:23 patrick Exp $	*/
+/*	$OpenBSD: ofw_misc.h,v 1.6 2019/09/07 13:29:08 patrick Exp $	*/
 /*
  * Copyright (c) 2017 Mark Kettenis
  *
@@ -70,4 +70,20 @@ void	i2c_register(struct i2c_bus *);
 struct i2c_controller *i2c_bynode(int);
 struct i2c_controller *i2c_byphandle(uint32_t);
 
+/* SFP support */
+
+struct if_sffpage;
+struct sfp_device {
+	int	sd_node;
+	void	*sd_cookie;
+	int	(*sd_get_sffpage)(void *, struct if_sffpage *);
+
+	LIST_ENTRY(sfp_device) sd_list;
+	uint32_t sd_phandle;
+};
+
+void	sfp_register(struct sfp_device *);
+
+int	sfp_get_sffpage(uint32_t, struct if_sffpage *);
+
 #endif /* _DEV_OFW_MISC_H_ */