[PATCH] RapidIO support: core enum
Adds RapidIO enumeration/discovery.
The core code implements enumeration/discovery, management of
devices/resources, and interfaces for RIO drivers.
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
new file mode 100644
index 0000000..c77c23b
--- /dev/null
+++ b/drivers/rapidio/switches/tsi500.c
@@ -0,0 +1,60 @@
+/*
+ * RapidIO Tsi500 switch support
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include "../rio.h"
+
+static int
+tsi500_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port)
+{
+ int i;
+ u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
+ u32 result;
+
+ if (table == 0xff) {
+ rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
+ result &= ~(0xf << (4*(route_destid & 0x7)));
+ for (i=0;i<4;i++)
+ rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*i), result | (route_port << (4*(route_destid & 0x7))));
+ }
+ else {
+ rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
+ result &= ~(0xf << (4*(route_destid & 0x7)));
+ rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*table), result | (route_port << (4*(route_destid & 0x7))));
+ }
+
+ return 0;
+}
+
+static int
+tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 *route_port)
+{
+ int ret = 0;
+ u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
+ u32 result;
+
+ if (table == 0xff)
+ rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
+ else
+ rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
+
+ result &= 0xf << (4*(route_destid & 0x7));
+ *route_port = result >> (4*(route_destid & 0x7));
+ if (*route_port > 3)
+ ret = -1;
+
+ return ret;
+}
+
+DECLARE_RIO_ROUTE_OPS(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_route_add_entry, tsi500_route_get_entry);