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Message-Id: <1495051512-13554-3-git-send-email-andrew@lunn.ch>
Date: Wed, 17 May 2017 22:05:11 +0200
From: Andrew Lunn <andrew@...n.ch>
To: David Miller <davem@...emloft.net>
Cc: netdev <netdev@...r.kernel.org>, nikita.yoush@...entembedded.com,
Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
Andrew Lunn <andrew@...n.ch>
Subject: [PATCH net-next 2/3] net: dsa: mv88e6xxx: mv88e6390X SERDES support
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@...n.ch>
---
drivers/net/dsa/mv88e6xxx/chip.c | 28 +++----
drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | 4 +
drivers/net/dsa/mv88e6xxx/serdes.c | 154 ++++++++++++++++++++++++++++++++++
drivers/net/dsa/mv88e6xxx/serdes.h | 24 ++++++
4 files changed, 196 insertions(+), 14 deletions(-)
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 6adaff3876b7..067f64dcf1b6 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -249,8 +249,8 @@ static struct mii_bus *mv88e6xxx_default_mdio_bus(struct mv88e6xxx_chip *chip)
return mdio_bus->bus;
}
-static int mv88e6xxx_phy_read(struct mv88e6xxx_chip *chip, int phy,
- int reg, u16 *val)
+int mv88e6xxx_phy_read(struct mv88e6xxx_chip *chip, int phy,
+ int reg, u16 *val)
{
int addr = phy; /* PHY devices addresses start at 0x0 */
struct mii_bus *bus;
@@ -265,8 +265,8 @@ static int mv88e6xxx_phy_read(struct mv88e6xxx_chip *chip, int phy,
return chip->info->ops->phy_read(chip, bus, addr, reg, val);
}
-static int mv88e6xxx_phy_write(struct mv88e6xxx_chip *chip, int phy,
- int reg, u16 val)
+int mv88e6xxx_phy_write(struct mv88e6xxx_chip *chip, int phy,
+ int reg, u16 val)
{
int addr = phy; /* PHY devices addresses start at 0x0 */
struct mii_bus *bus;
@@ -1996,7 +1996,10 @@ static int mv88e6xxx_setup_port_mode(struct mv88e6xxx_chip *chip, int port)
if (chip->info->tag_protocol == DSA_TAG_PROTO_EDSA)
return mv88e6xxx_set_port_mode_edsa(chip, port);
- return -EINVAL;
+ if (chip->info->ops->serdes_power)
+ return chip->info->ops->serdes_power(chip, port, true);
+
+ return 0;
}
static int mv88e6xxx_setup_message_port(struct mv88e6xxx_chip *chip, int port)
@@ -2068,15 +2071,6 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
if (err)
return err;
- /* If this port is connected to a SerDes, make sure the SerDes is
- * powered up.
- */
- if (chip->info->ops->serdes_power) {
- err = chip->info->ops->serdes_power(chip, port, true);
- if (err)
- return err;
- }
-
/* Port Control 2: don't force a good FCS, set the maximum frame size to
* 10240 bytes, disable 802.1q tags checking, don't discard tagged or
* untagged frames on this port, do a destination address lookup on all
@@ -2965,6 +2959,7 @@ 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 = {
@@ -2997,6 +2992,7 @@ 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 = {
@@ -3029,6 +3025,7 @@ 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 = {
@@ -3096,6 +3093,7 @@ 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 = {
@@ -3321,6 +3319,7 @@ 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 = {
@@ -3355,6 +3354,7 @@ 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[] = {
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 30ccd50832ff..aa74705c46d3 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -928,4 +928,8 @@ int mv88e6xxx_phy_page_write(struct mv88e6xxx_chip *chip, int phy,
u8 page, int reg, u16 val);
int mv88e6xxx_phy_page_read(struct mv88e6xxx_chip *chip, int phy,
u8 page, int reg, u16 *val);
+int mv88e6xxx_phy_write(struct mv88e6xxx_chip *chip, int phy,
+ int reg, u16 val);
+int mv88e6xxx_phy_read(struct mv88e6xxx_chip *chip, int phy,
+ int reg, u16 *val);
#endif
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index fc2d02c32908..6a4b4f7970f6 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -13,6 +13,7 @@
#include <linux/mii.h>
+#include "global2.h"
#include "mv88e6xxx.h"
#include "port.h"
#include "serdes.h"
@@ -75,3 +76,156 @@ 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;
+}
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index e183727388cb..d5223d9775ab 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -16,6 +16,30 @@
#include "mv88e6xxx.h"
+#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
--
2.11.0
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