Initial import

1 files changed, 199 insertions, 0 deletions

diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
new file mode 100644
index 000000000..8a43561b9
--- /dev/null
+++ b/drivers/rapidio/switches/tsi568.c
@@ -0,0 +1,199 @@
+/*
+ * 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 <linux/module.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(n)	(0x11004 + 0x100*n)
+#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)
+{
+	u32 regval;
+	int portnum;
+
+	pr_debug("TSI568 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
+
+	/* Make sure that Port-Writes are disabled (for all ports) */
+	for (portnum = 0;
+	     portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) {
+		rio_read_config_32(rdev, TSI568_SP_MODE(portnum), &regval);
+		rio_write_config_32(rdev, TSI568_SP_MODE(portnum),
+				    regval | TSI568_SP_MODE_PW_DIS);
+	}
+
+	return 0;
+}
+
+static struct rio_switch_ops tsi568_switch_ops = {
+	.owner = THIS_MODULE,
+	.add_entry = tsi568_route_add_entry,
+	.get_entry = tsi568_route_get_entry,
+	.clr_table = tsi568_route_clr_table,
+	.set_domain = NULL,
+	.get_domain = NULL,
+	.em_init = tsi568_em_init,
+	.em_handle = NULL,
+};
+
+static int tsi568_probe(struct rio_dev *rdev, const struct rio_device_id *id)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+
+	spin_lock(&rdev->rswitch->lock);
+
+	if (rdev->rswitch->ops) {
+		spin_unlock(&rdev->rswitch->lock);
+		return -EINVAL;
+	}
+
+	rdev->rswitch->ops = &tsi568_switch_ops;
+	spin_unlock(&rdev->rswitch->lock);
+	return 0;
+}
+
+static void tsi568_remove(struct rio_dev *rdev)
+{
+	pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+	spin_lock(&rdev->rswitch->lock);
+	if (rdev->rswitch->ops != &tsi568_switch_ops) {
+		spin_unlock(&rdev->rswitch->lock);
+		return;
+	}
+	rdev->rswitch->ops = NULL;
+	spin_unlock(&rdev->rswitch->lock);
+}
+
+static struct rio_device_id tsi568_id_table[] = {
+	{RIO_DEVICE(RIO_DID_TSI568, RIO_VID_TUNDRA)},
+	{ 0, }	/* terminate list */
+};
+
+static struct rio_driver tsi568_driver = {
+	.name = "tsi568",
+	.id_table = tsi568_id_table,
+	.probe = tsi568_probe,
+	.remove = tsi568_remove,
+};
+
+static int __init tsi568_init(void)
+{
+	return rio_register_driver(&tsi568_driver);
+}
+
+static void __exit tsi568_exit(void)
+{
+	rio_unregister_driver(&tsi568_driver);
+}
+
+device_initcall(tsi568_init);
+module_exit(tsi568_exit);
+
+MODULE_DESCRIPTION("IDT Tsi568 Serial RapidIO switch driver");
+MODULE_AUTHOR("Integrated Device Technology, Inc.");
+MODULE_LICENSE("GPL");