staticint reg_read(struct mv88e6060_priv *priv, int addr, int reg)
{ return mdiobus_read_nested(priv->bus, priv->sw_addr + addr, reg);
}
staticint reg_write(struct mv88e6060_priv *priv, int addr, int reg, u16 val)
{ return mdiobus_write_nested(priv->bus, priv->sw_addr + addr, reg, val);
}
staticconstchar *mv88e6060_get_name(struct mii_bus *bus, int sw_addr)
{ int ret;
ret = mdiobus_read(bus, sw_addr + REG_PORT(0), PORT_SWITCH_ID); if (ret >= 0) { if (ret == PORT_SWITCH_ID_6060) return"Marvell 88E6060 (A0)"; if (ret == PORT_SWITCH_ID_6060_R1 ||
ret == PORT_SWITCH_ID_6060_R2) return"Marvell 88E6060 (B0)"; if ((ret & PORT_SWITCH_ID_6060_MASK) == PORT_SWITCH_ID_6060) return"Marvell 88E6060";
}
return NULL;
}
staticenum dsa_tag_protocol mv88e6060_get_tag_protocol(struct dsa_switch *ds, int port, enum dsa_tag_protocol m)
{ return DSA_TAG_PROTO_TRAILER;
}
staticint mv88e6060_switch_reset(struct mv88e6060_priv *priv)
{ int i; int ret; unsignedlong timeout;
/* Set all ports to the disabled state. */ for (i = 0; i < MV88E6060_PORTS; i++) {
ret = reg_read(priv, REG_PORT(i), PORT_CONTROL); if (ret < 0) return ret;
ret = reg_write(priv, REG_PORT(i), PORT_CONTROL,
ret & ~PORT_CONTROL_STATE_MASK); if (ret) return ret;
}
/* Wait for transmit queues to drain. */
usleep_range(2000, 4000);
/* Reset the switch. */
ret = reg_write(priv, REG_GLOBAL, GLOBAL_ATU_CONTROL,
GLOBAL_ATU_CONTROL_SWRESET |
GLOBAL_ATU_CONTROL_LEARNDIS); if (ret) return ret;
/* Wait up to one second for reset to complete. */
timeout = jiffies + 1 * HZ; while (time_before(jiffies, timeout)) {
ret = reg_read(priv, REG_GLOBAL, GLOBAL_STATUS); if (ret < 0) return ret;
if (ret & GLOBAL_STATUS_INIT_READY) break;
usleep_range(1000, 2000);
} if (time_after(jiffies, timeout)) return -ETIMEDOUT;
return 0;
}
staticint mv88e6060_setup_global(struct mv88e6060_priv *priv)
{ int ret;
/* Disable discarding of frames with excessive collisions, * set the maximum frame size to 1536 bytes, and mask all * interrupt sources.
*/
ret = reg_write(priv, REG_GLOBAL, GLOBAL_CONTROL,
GLOBAL_CONTROL_MAX_FRAME_1536); if (ret) return ret;
staticint mv88e6060_setup_port(struct mv88e6060_priv *priv, int p)
{ int addr = REG_PORT(p); int ret;
if (dsa_is_unused_port(priv->ds, p)) return 0;
/* Do not force flow control, disable Ingress and Egress * Header tagging, disable VLAN tunneling, and set the port * state to Forwarding. Additionally, if this is the CPU * port, enable Ingress and Egress Trailer tagging mode.
*/
ret = reg_write(priv, addr, PORT_CONTROL,
dsa_is_cpu_port(priv->ds, p) ?
PORT_CONTROL_TRAILER |
PORT_CONTROL_INGRESS_MODE |
PORT_CONTROL_STATE_FORWARDING :
PORT_CONTROL_STATE_FORWARDING); if (ret) return ret;
/* Port based VLAN map: give each port its own address * database, allow the CPU port to talk to each of the 'real' * ports, and allow each of the 'real' ports to only talk to * the CPU port.
*/
ret = reg_write(priv, addr, PORT_VLAN_MAP,
((p & 0xf) << PORT_VLAN_MAP_DBNUM_SHIFT) |
(dsa_is_cpu_port(priv->ds, p) ?
dsa_user_ports(priv->ds) :
BIT(dsa_to_port(priv->ds, p)->cpu_dp->index))); if (ret) return ret;
/* Port Association Vector: when learning source addresses * of packets, add the address to the address database using * a port bitmap that has only the bit for this port set and * the other bits clear.
*/ return reg_write(priv, addr, PORT_ASSOC_VECTOR, BIT(p));
}
/* The multicast bit is always transmitted as a zero, so the switch uses * bit 8 for "DiffAddr", where 0 means all ports transmit the same SA.
*/
val &= 0xfeff;
ret = reg_write(priv, REG_GLOBAL, GLOBAL_MAC_01, val); if (ret) return ret;
ret = reg_write(priv, REG_GLOBAL, GLOBAL_MAC_23,
(addr[2] << 8) | addr[3]); if (ret) return ret;
staticint mv88e6060_setup(struct dsa_switch *ds)
{ struct mv88e6060_priv *priv = ds->priv; int ret; int i;
priv->ds = ds;
ret = mv88e6060_switch_reset(priv); if (ret < 0) return ret;
/* @@@ initialise atu */
ret = mv88e6060_setup_global(priv); if (ret < 0) return ret;
ret = mv88e6060_setup_addr(priv); if (ret < 0) return ret;
for (i = 0; i < MV88E6060_PORTS; i++) {
ret = mv88e6060_setup_port(priv, i); if (ret < 0) return ret;
}
return 0;
}
staticint mv88e6060_port_to_phy_addr(int port)
{ if (port >= 0 && port < MV88E6060_PORTS) return port; return -1;
}
staticint mv88e6060_phy_read(struct dsa_switch *ds, int port, int regnum)
{ struct mv88e6060_priv *priv = ds->priv; int addr;
addr = mv88e6060_port_to_phy_addr(port); if (addr == -1) return 0xffff;
return reg_read(priv, addr, regnum);
}
staticint
mv88e6060_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
{ struct mv88e6060_priv *priv = ds->priv; int addr;
addr = mv88e6060_port_to_phy_addr(port); if (addr == -1) return 0xffff;
return reg_write(priv, addr, regnum, val);
}
staticvoid mv88e6060_phylink_get_caps(struct dsa_switch *ds, int port, struct phylink_config *config)
{ unsignedlong *interfaces = config->supported_interfaces; struct mv88e6060_priv *priv = ds->priv; int addr = REG_PORT(port); int ret;
ret = reg_read(priv, addr, PORT_STATUS); if (ret < 0) {
dev_err(ds->dev, "port %d: unable to read status register: %pe\n",
port, ERR_PTR(ret)); return;
}
/* If the port is configured in SNI mode (acts as a 10Mbps PHY), * it should have phy-mode = "sni", but that doesn't yet exist, so * forcibly fail validation until the need arises to introduce it.
*/ if (!(ret & PORT_STATUS_PORTMODE)) {
dev_warn(ds->dev, "port %d: SNI mode not supported\n", port); return;
}
if (port >= 4) { /* Ports 4 and 5 can support MII, REVMII and REVRMII modes */
__set_bit(PHY_INTERFACE_MODE_MII, interfaces);
__set_bit(PHY_INTERFACE_MODE_REVMII, interfaces);
__set_bit(PHY_INTERFACE_MODE_REVRMII, interfaces);
} if (port <= 4) { /* Ports 0 to 3 have internal PHYs, and port 4 can optionally * use an internal PHY.
*/ /* Internal PHY */
__set_bit(PHY_INTERFACE_MODE_INTERNAL, interfaces); /* Default phylib interface mode */
__set_bit(PHY_INTERFACE_MODE_GMII, interfaces);
}
}
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