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path: root/drivers/rapidio/switches/tsi568.c
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Diffstat (limited to 'drivers/rapidio/switches/tsi568.c')
-rw-r--r--drivers/rapidio/switches/tsi568.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
new file mode 100644
index 000000000000..f7fd7898606e
--- /dev/null
+++ b/drivers/rapidio/switches/tsi568.c
@@ -0,0 +1,146 @@
+/*
+ * RapidIO Tsi568 switch support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ * - Added EM support
+ * - Modified switch operations initialization.
+ *
+ * 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 <linux/delay.h>
+#include "../rio.h"
+
+/* Global (broadcast) route registers */
+#define SPBC_ROUTE_CFG_DESTID 0x10070
+#define SPBC_ROUTE_CFG_PORT 0x10074
+
+/* Per port route registers */
+#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n)
+#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n)
+
+#define TSI568_SP_MODE_BC 0x10004
+#define TSI568_SP_MODE_PW_DIS 0x08000000
+
+static int
+tsi568_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT, route_port);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), route_port);
+ }
+
+ udelay(10);
+
+ return 0;
+}
+
+static int
+tsi568_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ int ret = 0;
+ u32 result;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT, &result);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), &result);
+ }
+
+ *route_port = result;
+ if (*route_port > 15)
+ ret = -1;
+
+ return ret;
+}
+
+static int
+tsi568_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 route_idx;
+ u32 lut_size;
+
+ lut_size = (mport->sys_size) ? 0x1ff : 0xff;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT,
+ RIO_INVALID_ROUTE);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table),
+ RIO_INVALID_ROUTE);
+ }
+
+ return 0;
+}
+
+static int
+tsi568_em_init(struct rio_dev *rdev)
+{
+ struct rio_mport *mport = rdev->net->hport;
+ u16 destid = rdev->rswitch->destid;
+ u8 hopcount = rdev->rswitch->hopcount;
+ u32 regval;
+
+ pr_debug("TSI568 %s [%d:%d]\n", __func__, destid, hopcount);
+
+ /* Make sure that Port-Writes are disabled (for all ports) */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ TSI568_SP_MODE_BC, &regval);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ TSI568_SP_MODE_BC, regval | TSI568_SP_MODE_PW_DIS);
+
+ return 0;
+}
+
+static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = tsi568_route_add_entry;
+ rdev->rswitch->get_entry = tsi568_route_get_entry;
+ rdev->rswitch->clr_table = tsi568_route_clr_table;
+ rdev->rswitch->set_domain = NULL;
+ rdev->rswitch->get_domain = NULL;
+ rdev->rswitch->em_init = tsi568_em_init;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);