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Subject[PATCH net-next 04/11] net: dsa: mv88e6xxx: add port FID accessors
Date
Add functions to port files to access the ports default FID.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx/chip.c | 77 +++-------------------------------------
drivers/net/dsa/mv88e6xxx/port.c | 67 ++++++++++++++++++++++++++++++++++
drivers/net/dsa/mv88e6xxx/port.h | 3 ++
3 files changed, 74 insertions(+), 73 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 0877777..20f59f1 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1674,75 +1674,6 @@ static int _mv88e6xxx_stu_loadpurge(struct mv88e6xxx_chip *chip,
return _mv88e6xxx_vtu_cmd(chip, GLOBAL_VTU_OP_STU_LOAD_PURGE);
}

-static int _mv88e6xxx_port_fid(struct mv88e6xxx_chip *chip, int port,
- u16 *new, u16 *old)
-{
- struct dsa_switch *ds = chip->ds;
- u16 upper_mask;
- u16 fid;
- u16 reg;
- int err;
-
- if (mv88e6xxx_num_databases(chip) == 4096)
- upper_mask = 0xff;
- else if (mv88e6xxx_num_databases(chip) == 256)
- upper_mask = 0xf;
- else
- return -EOPNOTSUPP;
-
- /* Port's default FID bits 3:0 are located in reg 0x06, offset 12 */
- err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
- if (err)
- return err;
-
- fid = (reg & PORT_BASE_VLAN_FID_3_0_MASK) >> 12;
-
- if (new) {
- reg &= ~PORT_BASE_VLAN_FID_3_0_MASK;
- reg |= (*new << 12) & PORT_BASE_VLAN_FID_3_0_MASK;
-
- err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg);
- if (err)
- return err;
- }
-
- /* Port's default FID bits 11:4 are located in reg 0x05, offset 0 */
- err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_1, &reg);
- if (err)
- return err;
-
- fid |= (reg & upper_mask) << 4;
-
- if (new) {
- reg &= ~upper_mask;
- reg |= (*new >> 4) & upper_mask;
-
- err = mv88e6xxx_port_write(chip, port, PORT_CONTROL_1, reg);
- if (err)
- return err;
-
- netdev_dbg(ds->ports[port].netdev,
- "FID %d (was %d)\n", *new, fid);
- }
-
- if (old)
- *old = fid;
-
- return 0;
-}
-
-static int _mv88e6xxx_port_fid_get(struct mv88e6xxx_chip *chip,
- int port, u16 *fid)
-{
- return _mv88e6xxx_port_fid(chip, port, NULL, fid);
-}
-
-static int _mv88e6xxx_port_fid_set(struct mv88e6xxx_chip *chip,
- int port, u16 fid)
-{
- return _mv88e6xxx_port_fid(chip, port, &fid, NULL);
-}
-
static int _mv88e6xxx_fid_new(struct mv88e6xxx_chip *chip, u16 *fid)
{
DECLARE_BITMAP(fid_bitmap, MV88E6XXX_N_FID);
@@ -1753,7 +1684,7 @@ static int _mv88e6xxx_fid_new(struct mv88e6xxx_chip *chip, u16 *fid)

/* Set every FID bit used by the (un)bridged ports */
for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
- err = _mv88e6xxx_port_fid_get(chip, i, fid);
+ err = mv88e6xxx_port_get_fid(chip, i, fid);
if (err)
return err;

@@ -2203,7 +2134,7 @@ static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,

/* Null VLAN ID corresponds to the port private database */
if (vid == 0)
- err = _mv88e6xxx_port_fid_get(chip, port, &vlan.fid);
+ err = mv88e6xxx_port_get_fid(chip, port, &vlan.fid);
else
err = _mv88e6xxx_vtu_get(chip, vid, &vlan, false);
if (err)
@@ -2379,7 +2310,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
int err;

/* Dump port's default Filtering Information Database (VLAN ID 0) */
- err = _mv88e6xxx_port_fid_get(chip, port, &fid);
+ err = mv88e6xxx_port_get_fid(chip, port, &fid);
if (err)
return err;

@@ -2782,7 +2713,7 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
* database, and allow bidirectional communication between the
* CPU and DSA port(s), and the other ports.
*/
- err = _mv88e6xxx_port_fid_set(chip, port, 0);
+ err = mv88e6xxx_port_set_fid(chip, port, 0);
if (err)
return err;

diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index c6a22ae..a7da812 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -61,6 +61,8 @@ int mv88e6xxx_port_set_state(struct mv88e6xxx_chip *chip, int port, u8 state)
return 0;
}

+/* Offset 0x05: Port Control 1 */
+
/* Offset 0x06: Port Based VLAN Map */

int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map)
@@ -85,3 +87,68 @@ int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map)

return 0;
}
+
+int mv88e6xxx_port_get_fid(struct mv88e6xxx_chip *chip, int port, u16 *fid)
+{
+ const u16 upper_mask = (mv88e6xxx_num_databases(chip) - 1) >> 4;
+ u16 reg;
+ int err;
+
+ /* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */
+ err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
+ if (err)
+ return err;
+
+ *fid = (reg & 0xf000) >> 12;
+
+ /* Port's default FID upper bits are located in reg 0x05, offset 0 */
+ if (upper_mask) {
+ err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_1, &reg);
+ if (err)
+ return err;
+
+ *fid |= (reg & upper_mask) << 4;
+ }
+
+ return 0;
+}
+
+int mv88e6xxx_port_set_fid(struct mv88e6xxx_chip *chip, int port, u16 fid)
+{
+ const u16 upper_mask = (mv88e6xxx_num_databases(chip) - 1) >> 4;
+ u16 reg;
+ int err;
+
+ if (fid >= mv88e6xxx_num_databases(chip))
+ return -EINVAL;
+
+ /* Port's default FID lower 4 bits are located in reg 0x06, offset 12 */
+ err = mv88e6xxx_port_read(chip, port, PORT_BASE_VLAN, &reg);
+ if (err)
+ return err;
+
+ reg &= 0x0fff;
+ reg |= (fid & 0x000f) << 12;
+
+ err = mv88e6xxx_port_write(chip, port, PORT_BASE_VLAN, reg);
+ if (err)
+ return err;
+
+ /* Port's default FID upper bits are located in reg 0x05, offset 0 */
+ if (upper_mask) {
+ err = mv88e6xxx_port_read(chip, port, PORT_CONTROL_1, &reg);
+ if (err)
+ return err;
+
+ reg &= ~upper_mask;
+ reg |= (fid >> 4) & upper_mask;
+
+ err = mv88e6xxx_port_write(chip, port, PORT_CONTROL_1, reg);
+ if (err)
+ return err;
+ }
+
+ netdev_dbg(chip->ds->ports[port].netdev, "FID set to %u\n", fid);
+
+ return 0;
+}
diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index 037d638..0df29b9 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -25,4 +25,7 @@ int mv88e6xxx_port_set_state(struct mv88e6xxx_chip *chip, int port, u8 state);

int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map);

+int mv88e6xxx_port_get_fid(struct mv88e6xxx_chip *chip, int port, u16 *fid);
+int mv88e6xxx_port_set_fid(struct mv88e6xxx_chip *chip, int port, u16 fid);
+
#endif /* _MV88E6XXX_PORT_H */
--
2.10.2
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