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net: dsa: mv88e6xxx: Add support for fdb_add, fdb_del, and fdb_getnext 

No vlan support at this time.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-03-26 18:36:38 -07:00 committed by David S. Miller
parent 339d82626d
commit defb05b9b9
2 changed files with 152 additions and 0 deletions
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136
drivers/net/dsa/mv88e6xxx.c
View File

@ -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;

16
drivers/net/dsa/mv88e6xxx.h
View File

@ -19,6 +19,8 @@
#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)
/* port states */
@ -29,6 +31,14 @@
#define PSTATE_LEARNING 0x02
#define PSTATE_FORWARDING 0x03
/* 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 +131,12 @@ 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;