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authorMatt Porter <mporter@kernel.crashing.org>2005-11-07 12:00:17 +0300
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 18:53:46 +0300
commiteb188d0e857c436b5d365d5ccc629da5a06ed102 (patch)
tree1a80ceab7d2d18a672f5753d26bbd972543ce959 /drivers/rapidio/switches
parent70a50ebd9a94533964c19f918dbbd66763e3f9e5 (diff)
downloadlinux-eb188d0e857c436b5d365d5ccc629da5a06ed102.tar.xz
[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>
Diffstat (limited to 'drivers/rapidio/switches')
-rw-r--r--drivers/rapidio/switches/Makefile5
-rw-r--r--drivers/rapidio/switches/tsi500.c60
2 files changed, 65 insertions, 0 deletions
diff --git a/drivers/rapidio/switches/Makefile b/drivers/rapidio/switches/Makefile
new file mode 100644
index 000000000000..b924f8301761
--- /dev/null
+++ b/drivers/rapidio/switches/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for RIO switches
+#
+
+obj-$(CONFIG_RAPIDIO) += tsi500.o
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
new file mode 100644
index 000000000000..c77c23bd9840
--- /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);