Skip to content

Commit

Permalink
net: dsa: mv88e6xxx: mv88e6390X SERDES support
Browse files Browse the repository at this point in the history 
The mv88e6390X family has 8 SERDES lanes. These can be used for 2
10Gbps ports, ports 9 or 10. If these ports are used at slower speeds,
the SERDES lanes become available for other ports for 1000Base-X.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
  • Loading branch information
Andrew Lunn authored and David S. Miller committed May 26, 2017
1 parent ba9b989 commit 6335e9f
Show file tree
Hide file tree
Showing 3 changed files with 184 additions and 0 deletions.
6 changes: 6 additions & 0 deletions drivers/net/dsa/mv88e6xxx/chip.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2757,6 +2757,7 @@ static const struct mv88e6xxx_ops mv88e6190_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_ops mv88e6190x_ops = {
Expand Down Expand Up @@ -2789,6 +2790,7 @@ static const struct mv88e6xxx_ops mv88e6190x_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_ops mv88e6191_ops = {
Expand Down Expand Up @@ -2821,6 +2823,7 @@ static const struct mv88e6xxx_ops mv88e6191_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_ops mv88e6240_ops = {
Expand Down Expand Up @@ -2888,6 +2891,7 @@ static const struct mv88e6xxx_ops mv88e6290_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_ops mv88e6320_ops = {
Expand Down Expand Up @@ -3113,6 +3117,7 @@ static const struct mv88e6xxx_ops mv88e6390_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_ops mv88e6390x_ops = {
Expand Down Expand Up @@ -3147,6 +3152,7 @@ static const struct mv88e6xxx_ops mv88e6390x_ops = {
.reset = mv88e6352_g1_reset,
.vtu_getnext = mv88e6390_g1_vtu_getnext,
.vtu_loadpurge = mv88e6390_g1_vtu_loadpurge,
.serdes_power = mv88e6390_serdes_power,
};

static const struct mv88e6xxx_info mv88e6xxx_table[] = {
Expand Down
154 changes: 154 additions & 0 deletions drivers/net/dsa/mv88e6xxx/serdes.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@

#include <linux/mii.h>

#include "global2.h"
#include "mv88e6xxx.h"
#include "phy.h"
#include "port.h"
Expand Down Expand Up @@ -73,3 +74,156 @@ int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)

return 0;
}

/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */
static int mv88e6390_serdes_10g(struct mv88e6xxx_chip *chip, int addr, bool on)
{
u16 val, new_val;
int reg_c45;
int err;

reg_c45 = MII_ADDR_C45 | MV88E6390_SERDES_DEVICE |
MV88E6390_PCS_CONTROL_1;
err = mv88e6xxx_phy_read(chip, addr, reg_c45, &val);
if (err)
return err;

if (on)
new_val = val & ~(MV88E6390_PCS_CONTROL_1_RESET |
MV88E6390_PCS_CONTROL_1_LOOPBACK |
MV88E6390_PCS_CONTROL_1_PDOWN);
else
new_val = val | MV88E6390_PCS_CONTROL_1_PDOWN;

if (val != new_val)
err = mv88e6xxx_phy_write(chip, addr, reg_c45, new_val);

return err;
}

/* Set the power on/off for 10GBASE-R and 10GBASE-X4/X2 */
static int mv88e6390_serdes_sgmii(struct mv88e6xxx_chip *chip, int addr,
bool on)
{
u16 val, new_val;
int reg_c45;
int err;

reg_c45 = MII_ADDR_C45 | MV88E6390_SERDES_DEVICE |
MV88E6390_SGMII_CONTROL;
err = mv88e6xxx_phy_read(chip, addr, reg_c45, &val);
if (err)
return err;

if (on)
new_val = val & ~(MV88E6390_SGMII_CONTROL_RESET |
MV88E6390_SGMII_CONTROL_LOOPBACK |
MV88E6390_SGMII_CONTROL_PDOWN);
else
new_val = val | MV88E6390_SGMII_CONTROL_PDOWN;

if (val != new_val)
err = mv88e6xxx_phy_write(chip, addr, reg_c45, new_val);

return err;
}

static int mv88e6390_serdes_lower(struct mv88e6xxx_chip *chip, u8 cmode,
int port_donor, int lane, bool rxaui, bool on)
{
int err;
u8 cmode_donor;

err = mv88e6xxx_port_get_cmode(chip, port_donor, &cmode_donor);
if (err)
return err;

switch (cmode_donor) {
case PORT_STATUS_CMODE_RXAUI:
if (!rxaui)
break;
/* Fall through */
case PORT_STATUS_CMODE_1000BASE_X:
case PORT_STATUS_CMODE_SGMII:
case PORT_STATUS_CMODE_2500BASEX:
if (cmode == PORT_STATUS_CMODE_1000BASE_X ||
cmode == PORT_STATUS_CMODE_SGMII)
return mv88e6390_serdes_sgmii(chip, lane, on);
}
return 0;
}

static int mv88e6390_serdes_port9(struct mv88e6xxx_chip *chip, u8 cmode,
bool on)
{
switch (cmode) {
case PORT_STATUS_CMODE_1000BASE_X:
case PORT_STATUS_CMODE_SGMII:
return mv88e6390_serdes_sgmii(chip, MV88E6390_PORT9_LANE0, on);
case PORT_STATUS_CMODE_XAUI:
case PORT_STATUS_CMODE_RXAUI:
case PORT_STATUS_CMODE_2500BASEX:
return mv88e6390_serdes_10g(chip, MV88E6390_PORT9_LANE0, on);
}

return 0;
}

static int mv88e6390_serdes_port10(struct mv88e6xxx_chip *chip, u8 cmode,
bool on)
{
switch (cmode) {
case PORT_STATUS_CMODE_SGMII:
return mv88e6390_serdes_sgmii(chip, MV88E6390_PORT10_LANE0, on);
case PORT_STATUS_CMODE_XAUI:
case PORT_STATUS_CMODE_RXAUI:
case PORT_STATUS_CMODE_1000BASE_X:
case PORT_STATUS_CMODE_2500BASEX:
return mv88e6390_serdes_10g(chip, MV88E6390_PORT10_LANE0, on);
}

return 0;
}

int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on)
{
u8 cmode;
int err;

err = mv88e6xxx_port_get_cmode(chip, port, &cmode);
if (err)
return cmode;

switch (port) {
case 2:
return mv88e6390_serdes_lower(chip, cmode, 9,
MV88E6390_PORT9_LANE1,
false, on);
case 3:
return mv88e6390_serdes_lower(chip, cmode, 9,
MV88E6390_PORT9_LANE2,
true, on);
case 4:
return mv88e6390_serdes_lower(chip, cmode, 9,
MV88E6390_PORT9_LANE3,
true, on);
case 5:
return mv88e6390_serdes_lower(chip, cmode, 10,
MV88E6390_PORT10_LANE1,
false, on);
case 6:
return mv88e6390_serdes_lower(chip, cmode, 10,
MV88E6390_PORT10_LANE2,
true, on);
case 7:
return mv88e6390_serdes_lower(chip, cmode, 10,
MV88E6390_PORT10_LANE3,
true, on);
case 9:
return mv88e6390_serdes_port9(chip, cmode, on);
case 10:
return mv88e6390_serdes_port10(chip, cmode, on);
}

return 0;
}
24 changes: 24 additions & 0 deletions drivers/net/dsa/mv88e6xxx/serdes.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,30 @@
#define MV88E6352_ADDR_SERDES 0x0f
#define MV88E6352_SERDES_PAGE_FIBER 0x01

#define MV88E6390_PORT9_LANE0 0x09
#define MV88E6390_PORT9_LANE1 0x12
#define MV88E6390_PORT9_LANE2 0x13
#define MV88E6390_PORT9_LANE3 0x14
#define MV88E6390_PORT10_LANE0 0x0a
#define MV88E6390_PORT10_LANE1 0x15
#define MV88E6390_PORT10_LANE2 0x16
#define MV88E6390_PORT10_LANE3 0x17
#define MV88E6390_SERDES_DEVICE (4 << 16)

/* 10GBASE-R and 10GBASE-X4/X2 */
#define MV88E6390_PCS_CONTROL_1 0x1000
#define MV88E6390_PCS_CONTROL_1_RESET BIT(15)
#define MV88E6390_PCS_CONTROL_1_LOOPBACK BIT(14)
#define MV88E6390_PCS_CONTROL_1_SPEED BIT(13)
#define MV88E6390_PCS_CONTROL_1_PDOWN BIT(11)

/* 1000BASE-X and SGMII */
#define MV88E6390_SGMII_CONTROL 0x2000
#define MV88E6390_SGMII_CONTROL_RESET BIT(15)
#define MV88E6390_SGMII_CONTROL_LOOPBACK BIT(14)
#define MV88E6390_SGMII_CONTROL_PDOWN BIT(11)

int mv88e6352_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on);
int mv88e6390_serdes_power(struct mv88e6xxx_chip *chip, int port, bool on);

#endif

0 comments on commit 6335e9f

Please sign in to comment.