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Message-Id: <1426952815-4642-12-git-send-email-linux@roeck-us.net>
Date: Sat, 21 Mar 2015 08:46:48 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
linux-kernel@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 11/18] net: dsa: mv88e6xxx: Add support for fdb_add, fdb_del, and fdb_getnext
No vlan support at this time.
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
drivers/net/dsa/mv88e6xxx.c | 136 ++++++++++++++++++++++++++++++++++++++++++++
drivers/net/dsa/mv88e6xxx.h | 22 +++++++
2 files changed, 158 insertions(+)
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index 17aa74f..0388022 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -9,6 +9,7 @@
*/
#include <linux/delay.h>
+#include <linux/etherdevice.h>
#include <linux/if_bridge.h>
#include <linux/jiffies.h>
#include <linux/list.h>
@@ -953,6 +954,141 @@ int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state)
return 0;
}
+static int __mv88e6xxx_write_addr(struct dsa_switch *ds,
+ const unsigned char *addr)
+{
+ int i, ret;
+
+ for (i = 0; i < 3; i++) {
+ ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, 0x0d + i,
+ (addr[i * 2] << 8) | addr[i * 2 + 1]);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int __mv88e6xxx_read_addr(struct dsa_switch *ds, unsigned char *addr)
+{
+ int i, ret;
+
+ for (i = 0; i < 3; i++) {
+ ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL, 0x0d + i);
+ if (ret < 0)
+ return ret;
+ addr[i * 2] = ret >> 8;
+ addr[i * 2 + 1] = ret & 0xff;
+ }
+
+ return 0;
+}
+
+static int __mv88e6xxx_port_fdb_cmd(struct dsa_switch *ds, int port,
+ const unsigned char *addr, int state)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ u8 fid = ps->fid[port];
+ int ret;
+
+ ret = _mv88e6xxx_atu_wait(ds);
+ if (ret < 0)
+ return ret;
+
+ ret = __mv88e6xxx_write_addr(ds, addr);
+ if (ret < 0)
+ return ret;
+
+ ret = _mv88e6xxx_reg_write(ds, REG_GLOBAL, 0x0c,
+ (0x10 << port) | state);
+ if (ret)
+ return ret;
+
+ ret = _mv88e6xxx_atu_cmd(ds, fid, ATU_CMD_LOAD_FID);
+
+ return ret;
+}
+
+int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid)
+{
+ int state = is_multicast_ether_addr(addr) ?
+ FDB_STATE_MC_STATIC : FDB_STATE_STATIC;
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ int ret;
+
+ mutex_lock(&ps->smi_mutex);
+ ret = __mv88e6xxx_port_fdb_cmd(ds, port, addr, state);
+ mutex_unlock(&ps->smi_mutex);
+
+ return ret;
+}
+
+int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ int ret;
+
+ mutex_lock(&ps->smi_mutex);
+ ret = __mv88e6xxx_port_fdb_cmd(ds, port, addr, FDB_STATE_UNUSED);
+ mutex_unlock(&ps->smi_mutex);
+
+ return ret;
+}
+
+static int __mv88e6xxx_port_getnext(struct dsa_switch *ds, int port,
+ unsigned char *addr, bool *is_static)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ u8 fid = ps->fid[port];
+ int ret, state;
+
+ ret = _mv88e6xxx_atu_wait(ds);
+ if (ret < 0)
+ return ret;
+
+ ret = __mv88e6xxx_write_addr(ds, addr);
+ if (ret < 0)
+ return ret;
+
+ do {
+ ret = _mv88e6xxx_atu_cmd(ds, fid, ATU_CMD_GETNEXT_FID);
+ if (ret < 0)
+ return ret;
+
+ ret = _mv88e6xxx_reg_read(ds, REG_GLOBAL, 0x0c);
+ if (ret < 0)
+ return ret;
+ state = ret & FDB_STATE_MASK;
+ if (state == FDB_STATE_UNUSED)
+ return -ENOENT;
+ } while (!(((ret >> 4) & 0xff) & (1 << port)));
+
+ ret = __mv88e6xxx_read_addr(ds, addr);
+ if (ret < 0)
+ return ret;
+
+ *is_static = state == (is_multicast_ether_addr(addr) ?
+ FDB_STATE_MC_STATIC : FDB_STATE_STATIC);
+
+ return 0;
+}
+
+/* get next entry for port */
+int mv88e6xxx_port_fdb_getnext(struct dsa_switch *ds, int port,
+ unsigned char *addr, bool *is_static)
+{
+ struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+ int ret;
+
+ mutex_lock(&ps->smi_mutex);
+ ret = __mv88e6xxx_port_getnext(ds, port, addr, is_static);
+ mutex_unlock(&ps->smi_mutex);
+
+ return ret;
+}
+
static void mv88e6xxx_bridge_work(struct work_struct *work)
{
struct mv88e6xxx_priv_state *ps;
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 8e215eb..48ecefc 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -29,6 +29,22 @@
#define PSTATE_LEARNING 0x02
#define PSTATE_FORWARDING 0x03
+/* ATU commands */
+
+#define ATU_BUSY 0x8000
+
+#define ATU_CMD_LOAD_FID (ATU_BUSY | 0x3000)
+#define ATU_CMD_GETNEXT_FID (ATU_BUSY | 0x4000)
+#define ATU_CMD_FLUSH_NONSTATIC_FID (ATU_BUSY | 0x6000)
+
+/* FDB states */
+
+#define FDB_STATE_MASK 0x0f
+
+#define FDB_STATE_UNUSED 0x00
+#define FDB_STATE_MC_STATIC 0x07 /* static multicast */
+#define FDB_STATE_STATIC 0x0e /* static unicast */
+
struct mv88e6xxx_priv_state {
/* When using multi-chip addressing, this mutex protects
* access to the indirect access registers. (In single-chip
@@ -121,6 +137,12 @@ int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,
int mv88e6xxx_join_bridge(struct dsa_switch *ds, int port, u32 br_port_mask);
int mv88e6xxx_leave_bridge(struct dsa_switch *ds, int port, u32 br_port_mask);
int mv88e6xxx_port_stp_update(struct dsa_switch *ds, int port, u8 state);
+int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid);
+int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
+ const unsigned char *addr, u16 vid);
+int mv88e6xxx_port_fdb_getnext(struct dsa_switch *ds, int port,
+ unsigned char *addr, bool *is_static);
extern struct dsa_switch_driver mv88e6131_switch_driver;
extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;
--
2.1.0
--
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