Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
drivers/net/phy/mv88e6xxx/chip.c | 84 +++++++++
drivers/net/phy/mv88e6xxx/chip.h | 10 ++
drivers/net/phy/mv88e6xxx/global2.c | 265 ++++++++++++++++++++++++++++
drivers/net/phy/mv88e6xxx/global2.h | 29 +++
4 files changed, 388 insertions(+)
diff --git a/drivers/net/phy/mv88e6xxx/chip.c b/drivers/net/phy/mv88e6xxx/chip.c
index cc4bfc02e..7eb961fc0 100644
--- a/drivers/net/phy/mv88e6xxx/chip.c
+++ b/drivers/net/phy/mv88e6xxx/chip.c
@@ -4,6 +4,7 @@
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/bitfield.h>
+#include <linux/nvmem-provider.h>
#include <gpio.h>
#include <of_device.h>
@@ -79,6 +80,8 @@ static const struct mv88e6xxx_ops mv88e6131_ops = {
static const struct mv88e6xxx_ops mv88e6141_ops = {
/* MV88E6XXX_FAMILY_6341 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
@@ -104,6 +107,8 @@ static const struct mv88e6xxx_ops mv88e6171_ops = {
static const struct mv88e6xxx_ops mv88e6172_ops = {
/* MV88E6XXX_FAMILY_6352 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
@@ -116,6 +121,8 @@ static const struct mv88e6xxx_ops mv88e6175_ops = {
static const struct mv88e6xxx_ops mv88e6176_ops = {
/* MV88E6XXX_FAMILY_6352 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
@@ -129,48 +136,64 @@ static const struct mv88e6xxx_ops mv88e6185_ops = {
static const struct mv88e6xxx_ops mv88e6190_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6190x_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6191_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6240_ops = {
/* MV88E6XXX_FAMILY_6352 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6290_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6320_ops = {
/* MV88E6XXX_FAMILY_6320 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6321_ops = {
/* MV88E6XXX_FAMILY_6320 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6341_ops = {
/* MV88E6XXX_FAMILY_6341 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
@@ -191,16 +214,22 @@ static const struct mv88e6xxx_ops mv88e6352_ops = {
/* MV88E6XXX_FAMILY_6352 */
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
+ .get_eeprom = mv88e6xxx_g2_get_eeprom16,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom16,
};
static const struct mv88e6xxx_ops mv88e6390_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
static const struct mv88e6xxx_ops mv88e6390x_ops = {
/* MV88E6XXX_FAMILY_6390 */
+ .get_eeprom = mv88e6xxx_g2_get_eeprom8,
+ .set_eeprom = mv88e6xxx_g2_set_eeprom8,
.phy_read = mv88e6xxx_g2_smi_phy_read,
.phy_write = mv88e6xxx_g2_smi_phy_write,
};
@@ -621,12 +650,48 @@ static int mv88e6xxx_switch_reset(struct mv88e6xxx_chip *chip)
return 0;
}
+static int mv88e6xxx_eeprom_read(struct device_d *dev, const int offset,
+ void *val, int bytes)
+{
+ struct mv88e6xxx_chip *chip = dev->parent->priv;
+ struct ethtool_eeprom eeprom = {
+ .offset = offset,
+ .len = bytes,
+ };
+
+ if (!chip->info->ops->get_eeprom)
+ return -ENOTSUPP;
+
+ return chip->info->ops->get_eeprom(chip, &eeprom, val);
+}
+
+static int mv88e6xxx_eeprom_write(struct device_d *dev, const int offset,
+ const void *val, int bytes)
+{
+ struct mv88e6xxx_chip *chip = dev->parent->priv;
+ struct ethtool_eeprom eeprom = {
+ .offset = offset,
+ .len = bytes,
+ };
+
+ if (!chip->info->ops->set_eeprom)
+ return -ENOTSUPP;
+
+ return chip->info->ops->set_eeprom(chip, &eeprom, (void *)val);
+}
+
+static const struct nvmem_bus mv88e6xxx_eeprom_nvmem_bus = {
+ .write = mv88e6xxx_eeprom_write,
+ .read = mv88e6xxx_eeprom_read,
+};
+
static int mv88e6xxx_probe(struct device_d *dev)
{
struct device_node *np = dev->device_node;
struct device_node *mdio_node;
struct mv88e6xxx_chip *chip;
enum of_gpio_flags of_flags;
+ u32 eeprom_len = 0;
int err;
u32 reg;
@@ -643,8 +708,11 @@ static int mv88e6xxx_probe(struct device_d *dev)
chip = xzalloc(sizeof(struct mv88e6xxx_chip));
chip->dev = dev;
+ dev->priv = chip;
chip->info = of_device_get_match_data(dev);
+ of_property_read_u32(np, "eeprom-length", &eeprom_len);
+
chip->parent_miibus = of_mdio_find_bus(np->parent);
if (!chip->parent_miibus)
return -EPROBE_DEFER;
@@ -676,6 +744,22 @@ static int mv88e6xxx_probe(struct device_d *dev)
err = mv88e6xxx_switch_reset(chip);
if (err)
return err;
+
+ if (eeprom_len) {
+ struct nvmem_config config = {
+ .name = basprintf("%s-eeprom", dev_name(dev)),
+ .dev = dev,
+ .word_size = 1,
+ .stride = 1,
+ .size = eeprom_len,
+ .read_only = false,
+ .bus = &mv88e6xxx_eeprom_nvmem_bus,
+ };
+
+ if (IS_ERR(nvmem_register(&config)))
+ dev_err(dev, "Failed to register EEPROM\n");
+ }
+
/*
* In single-chip address mode addresses 0x10 - 0x1f are
* reserved to access various switch registers and do not
diff --git a/drivers/net/phy/mv88e6xxx/chip.h b/drivers/net/phy/mv88e6xxx/chip.h
index 6c3f0705b..3a798a11e 100644
--- a/drivers/net/phy/mv88e6xxx/chip.h
+++ b/drivers/net/phy/mv88e6xxx/chip.h
@@ -45,6 +45,11 @@ struct mv88e6xxx_chip {
int reset;
};
+struct ethtool_eeprom {
+ __u32 offset;
+ __u32 len;
+};
+
struct mv88e6xxx_ops {
int (*phy_read)(struct mv88e6xxx_chip *chip,
struct mii_bus *bus,
@@ -52,6 +57,11 @@ struct mv88e6xxx_ops {
int (*phy_write)(struct mv88e6xxx_chip *chip,
struct mii_bus *bus,
int addr, int reg, u16 val);
+
+ int (*get_eeprom)(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
+ int (*set_eeprom)(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
};
int mv88e6xxx_write(struct mv88e6xxx_chip *chip, int addr, int reg, u16 val);
diff --git a/drivers/net/phy/mv88e6xxx/global2.c b/drivers/net/phy/mv88e6xxx/global2.c
index a3c7bc0e5..970a7291e 100644
--- a/drivers/net/phy/mv88e6xxx/global2.c
+++ b/drivers/net/phy/mv88e6xxx/global2.c
@@ -18,6 +18,271 @@ int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask)
return mv88e6xxx_wait(chip, chip->info->global2_addr, reg, mask);
}
+/* Offset 0x14: EEPROM Command
+ * Offset 0x15: EEPROM Data (for 16-bit data access)
+ * Offset 0x15: EEPROM Addr (for 8-bit data access)
+ */
+
+static int mv88e6xxx_g2_eeprom_wait(struct mv88e6xxx_chip *chip)
+{
+ return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_EEPROM_CMD,
+ MV88E6XXX_G2_EEPROM_CMD_BUSY |
+ MV88E6XXX_G2_EEPROM_CMD_RUNNING);
+}
+
+static int mv88e6xxx_g2_eeprom_cmd(struct mv88e6xxx_chip *chip, u16 cmd)
+{
+ int err;
+
+ err = mv88e6xxx_g2_write(chip, MV88E6XXX_G2_EEPROM_CMD,
+ MV88E6XXX_G2_EEPROM_CMD_BUSY | cmd);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_eeprom_wait(chip);
+}
+
+static int mv88e6xxx_g2_eeprom_read8(struct mv88e6xxx_chip *chip,
+ u16 addr, u8 *data)
+{
+ u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ;
+ int err;
+
+ err = mv88e6xxx_g2_eeprom_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &cmd);
+ if (err)
+ return err;
+
+ *data = cmd & 0xff;
+
+ return 0;
+}
+
+static int mv88e6xxx_g2_eeprom_write8(struct mv88e6xxx_chip *chip,
+ u16 addr, u8 data)
+{
+ u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE |
+ MV88E6XXX_G2_EEPROM_CMD_WRITE_EN;
+ int err;
+
+ err = mv88e6xxx_g2_eeprom_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_write(chip, MV88E6390_G2_EEPROM_ADDR, addr);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_eeprom_cmd(chip, cmd | data);
+}
+
+static int mv88e6xxx_g2_eeprom_read16(struct mv88e6xxx_chip *chip,
+ u8 addr, u16 *data)
+{
+ u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_READ | addr;
+ int err;
+
+ err = mv88e6xxx_g2_eeprom_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_eeprom_cmd(chip, cmd);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_read(chip, MV88E6352_G2_EEPROM_DATA, data);
+}
+
+static int mv88e6xxx_g2_eeprom_write16(struct mv88e6xxx_chip *chip,
+ u8 addr, u16 data)
+{
+ u16 cmd = MV88E6XXX_G2_EEPROM_CMD_OP_WRITE | addr;
+ int err;
+
+ err = mv88e6xxx_g2_eeprom_wait(chip);
+ if (err)
+ return err;
+
+ err = mv88e6xxx_g2_write(chip, MV88E6352_G2_EEPROM_DATA, data);
+ if (err)
+ return err;
+
+ return mv88e6xxx_g2_eeprom_cmd(chip, cmd);
+}
+
+int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ unsigned int offset = eeprom->offset;
+ unsigned int len = eeprom->len;
+ int err;
+
+ eeprom->len = 0;
+
+ while (len) {
+ err = mv88e6xxx_g2_eeprom_read8(chip, offset, data);
+ if (err)
+ return err;
+
+ eeprom->len++;
+ offset++;
+ data++;
+ len--;
+ }
+
+ return 0;
+}
+
+int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ unsigned int offset = eeprom->offset;
+ unsigned int len = eeprom->len;
+ int err;
+
+ eeprom->len = 0;
+
+ while (len) {
+ err = mv88e6xxx_g2_eeprom_write8(chip, offset, *data);
+ if (err)
+ return err;
+
+ eeprom->len++;
+ offset++;
+ data++;
+ len--;
+ }
+
+ return 0;
+}
+
+int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ unsigned int offset = eeprom->offset;
+ unsigned int len = eeprom->len;
+ u16 val;
+ int err;
+
+ eeprom->len = 0;
+
+ if (offset & 1) {
+ err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
+ if (err)
+ return err;
+
+ *data++ = (val >> 8) & 0xff;
+
+ offset++;
+ len--;
+ eeprom->len++;
+ }
+
+ while (len >= 2) {
+ err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
+ if (err)
+ return err;
+
+ *data++ = val & 0xff;
+ *data++ = (val >> 8) & 0xff;
+
+ offset += 2;
+ len -= 2;
+ eeprom->len += 2;
+ }
+
+ if (len) {
+ err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
+ if (err)
+ return err;
+
+ *data++ = val & 0xff;
+
+ offset++;
+ len--;
+ eeprom->len++;
+ }
+
+ return 0;
+}
+
+int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ unsigned int offset = eeprom->offset;
+ unsigned int len = eeprom->len;
+ u16 val;
+ int err;
+
+ /* Ensure the RO WriteEn bit is set */
+ err = mv88e6xxx_g2_read(chip, MV88E6XXX_G2_EEPROM_CMD, &val);
+ if (err)
+ return err;
+
+ if (!(val & MV88E6XXX_G2_EEPROM_CMD_WRITE_EN))
+ return -EROFS;
+
+ eeprom->len = 0;
+
+ if (offset & 1) {
+ err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
+ if (err)
+ return err;
+
+ val = (*data++ << 8) | (val & 0xff);
+
+ err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
+ if (err)
+ return err;
+
+ offset++;
+ len--;
+ eeprom->len++;
+ }
+
+ while (len >= 2) {
+ val = *data++;
+ val |= *data++ << 8;
+
+ err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
+ if (err)
+ return err;
+
+ offset += 2;
+ len -= 2;
+ eeprom->len += 2;
+ }
+
+ if (len) {
+ err = mv88e6xxx_g2_eeprom_read16(chip, offset >> 1, &val);
+ if (err)
+ return err;
+
+ val = (val & 0xff00) | *data++;
+
+ err = mv88e6xxx_g2_eeprom_write16(chip, offset >> 1, val);
+ if (err)
+ return err;
+
+ offset++;
+ len--;
+ eeprom->len++;
+ }
+
+ return 0;
+}
+
static int mv88e6xxx_g2_smi_phy_wait(struct mv88e6xxx_chip *chip)
{
return mv88e6xxx_g2_wait(chip, MV88E6XXX_G2_SMI_PHY_CMD,
diff --git a/drivers/net/phy/mv88e6xxx/global2.h b/drivers/net/phy/mv88e6xxx/global2.h
index 0d8e9f359..4e23b0423 100644
--- a/drivers/net/phy/mv88e6xxx/global2.h
+++ b/drivers/net/phy/mv88e6xxx/global2.h
@@ -27,6 +27,26 @@
/* Offset 0x19: SMI PHY Data Register */
#define MV88E6XXX_G2_SMI_PHY_DATA 0x19
+/* Offset 0x14: EEPROM Command */
+#define MV88E6XXX_G2_EEPROM_CMD 0x14
+#define MV88E6XXX_G2_EEPROM_CMD_BUSY 0x8000
+#define MV88E6XXX_G2_EEPROM_CMD_OP_MASK 0x7000
+#define MV88E6XXX_G2_EEPROM_CMD_OP_WRITE 0x3000
+#define MV88E6XXX_G2_EEPROM_CMD_OP_READ 0x4000
+#define MV88E6XXX_G2_EEPROM_CMD_OP_LOAD 0x6000
+#define MV88E6XXX_G2_EEPROM_CMD_RUNNING 0x0800
+#define MV88E6XXX_G2_EEPROM_CMD_WRITE_EN 0x0400
+#define MV88E6352_G2_EEPROM_CMD_ADDR_MASK 0x00ff
+#define MV88E6390_G2_EEPROM_CMD_DATA_MASK 0x00ff
+
+/* Offset 0x15: EEPROM Data */
+#define MV88E6352_G2_EEPROM_DATA 0x15
+#define MV88E6352_G2_EEPROM_DATA_MASK 0xffff
+
+/* Offset 0x15: EEPROM Addr */
+#define MV88E6390_G2_EEPROM_ADDR 0x15
+#define MV88E6390_G2_EEPROM_ADDR_MASK 0xffff
+
int mv88e6xxx_g2_read(struct mv88e6xxx_chip *chip, int reg, u16 *val);
int mv88e6xxx_g2_write(struct mv88e6xxx_chip *chip, int reg, u16 val);
int mv88e6xxx_g2_wait(struct mv88e6xxx_chip *chip, int reg, u16 mask);
@@ -38,4 +58,13 @@ int mv88e6xxx_g2_smi_phy_write(struct mv88e6xxx_chip *chip,
struct mii_bus *bus,
int addr, int reg, u16 val);
+int mv88e6xxx_g2_get_eeprom8(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
+int mv88e6xxx_g2_set_eeprom8(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
+int mv88e6xxx_g2_get_eeprom16(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
+int mv88e6xxx_g2_set_eeprom16(struct mv88e6xxx_chip *chip,
+ struct ethtool_eeprom *eeprom, u8 *data);
+
#endif /* _MV88E6XXX_GLOBAL2_H */
--
2.17.1
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