diff options
4 files changed, 208 insertions, 1 deletions
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile index e18c9b2d0bb7..75556387df08 100644 --- a/drivers/net/ethernet/microchip/lan966x/Makefile +++ b/drivers/net/ethernet/microchip/lan966x/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o -lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o +lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o \ + lan966x_mac.o diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c new file mode 100644 index 000000000000..f6878b9f57ef --- /dev/null +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_mac.c @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include "lan966x_main.h" + +#define LAN966X_MAC_COLUMNS 4 +#define MACACCESS_CMD_IDLE 0 +#define MACACCESS_CMD_LEARN 1 +#define MACACCESS_CMD_FORGET 2 +#define MACACCESS_CMD_AGE 3 +#define MACACCESS_CMD_GET_NEXT 4 +#define MACACCESS_CMD_INIT 5 +#define MACACCESS_CMD_READ 6 +#define MACACCESS_CMD_WRITE 7 +#define MACACCESS_CMD_SYNC_GET_NEXT 8 + +static int lan966x_mac_get_status(struct lan966x *lan966x) +{ + return lan_rd(lan966x, ANA_MACACCESS); +} + +static int lan966x_mac_wait_for_completion(struct lan966x *lan966x) +{ + u32 val; + + return readx_poll_timeout(lan966x_mac_get_status, + lan966x, val, + (ANA_MACACCESS_MAC_TABLE_CMD_GET(val)) == + MACACCESS_CMD_IDLE, + TABLE_UPDATE_SLEEP_US, TABLE_UPDATE_TIMEOUT_US); +} + +static void lan966x_mac_select(struct lan966x *lan966x, + const unsigned char mac[ETH_ALEN], + unsigned int vid) +{ + u32 macl = 0, mach = 0; + + /* Set the MAC address to handle and the vlan associated in a format + * understood by the hardware. + */ + mach |= vid << 16; + mach |= mac[0] << 8; + mach |= mac[1] << 0; + macl |= mac[2] << 24; + macl |= mac[3] << 16; + macl |= mac[4] << 8; + macl |= mac[5] << 0; + + lan_wr(macl, lan966x, ANA_MACLDATA); + lan_wr(mach, lan966x, ANA_MACHDATA); +} + +int lan966x_mac_learn(struct lan966x *lan966x, int port, + const unsigned char mac[ETH_ALEN], + unsigned int vid, + enum macaccess_entry_type type) +{ + lan966x_mac_select(lan966x, mac, vid); + + /* Issue a write command */ + lan_wr(ANA_MACACCESS_VALID_SET(1) | + ANA_MACACCESS_CHANGE2SW_SET(0) | + ANA_MACACCESS_DEST_IDX_SET(port) | + ANA_MACACCESS_ENTRYTYPE_SET(type) | + ANA_MACACCESS_MAC_TABLE_CMD_SET(MACACCESS_CMD_LEARN), + lan966x, ANA_MACACCESS); + + return lan966x_mac_wait_for_completion(lan966x); +} + +int lan966x_mac_forget(struct lan966x *lan966x, + const unsigned char mac[ETH_ALEN], + unsigned int vid, + enum macaccess_entry_type type) +{ + lan966x_mac_select(lan966x, mac, vid); + + /* Issue a forget command */ + lan_wr(ANA_MACACCESS_ENTRYTYPE_SET(type) | + ANA_MACACCESS_MAC_TABLE_CMD_SET(MACACCESS_CMD_FORGET), + lan966x, ANA_MACACCESS); + + return lan966x_mac_wait_for_completion(lan966x); +} + +int lan966x_mac_cpu_learn(struct lan966x *lan966x, const char *addr, u16 vid) +{ + return lan966x_mac_learn(lan966x, PGID_CPU, addr, vid, ENTRYTYPE_LOCKED); +} + +int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid) +{ + return lan966x_mac_forget(lan966x, addr, vid, ENTRYTYPE_LOCKED); +} + +void lan966x_mac_init(struct lan966x *lan966x) +{ + /* Clear the MAC table */ + lan_wr(MACACCESS_CMD_INIT, lan966x, ANA_MACACCESS); + lan966x_mac_wait_for_completion(lan966x); +} diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 4743cd7d2982..b042b7f47d5e 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -100,6 +100,27 @@ static int lan966x_create_targets(struct platform_device *pdev, return 0; } +static int lan966x_port_set_mac_address(struct net_device *dev, void *p) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + const struct sockaddr *addr = p; + int ret; + + /* Learn the new net device MAC address in the mac table. */ + ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, port->pvid); + if (ret) + return ret; + + /* Then forget the previous one. */ + ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, port->pvid); + if (ret) + return ret; + + eth_hw_addr_set(dev, addr->sa_data); + return ret; +} + static int lan966x_port_get_phys_port_name(struct net_device *dev, char *buf, size_t len) { @@ -311,13 +332,49 @@ static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu) return 0; } +static int lan966x_mc_unsync(struct net_device *dev, const unsigned char *addr) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + + return lan966x_mac_forget(lan966x, addr, port->pvid, ENTRYTYPE_LOCKED); +} + +static int lan966x_mc_sync(struct net_device *dev, const unsigned char *addr) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + + return lan966x_mac_cpu_learn(lan966x, addr, port->pvid); +} + +static void lan966x_port_set_rx_mode(struct net_device *dev) +{ + __dev_mc_sync(dev, lan966x_mc_sync, lan966x_mc_unsync); +} + +static int lan966x_port_get_parent_id(struct net_device *dev, + struct netdev_phys_item_id *ppid) +{ + struct lan966x_port *port = netdev_priv(dev); + struct lan966x *lan966x = port->lan966x; + + ppid->id_len = sizeof(lan966x->base_mac); + memcpy(&ppid->id, &lan966x->base_mac, ppid->id_len); + + return 0; +} + static const struct net_device_ops lan966x_port_netdev_ops = { .ndo_open = lan966x_port_open, .ndo_stop = lan966x_port_stop, .ndo_start_xmit = lan966x_port_xmit, .ndo_change_rx_flags = lan966x_port_change_rx_flags, .ndo_change_mtu = lan966x_port_change_mtu, + .ndo_set_rx_mode = lan966x_port_set_rx_mode, .ndo_get_phys_port_name = lan966x_port_get_phys_port_name, + .ndo_set_mac_address = lan966x_port_set_mac_address, + .ndo_get_port_parent_id = lan966x_port_get_parent_id, }; static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp) @@ -533,6 +590,11 @@ static int lan966x_probe_port(struct lan966x *lan966x, u32 p, dev->netdev_ops = &lan966x_port_netdev_ops; dev->needed_headroom = IFH_LEN * sizeof(u32); + eth_hw_addr_gen(dev, lan966x->base_mac, p + 1); + + lan966x_mac_learn(lan966x, PGID_CPU, dev->dev_addr, port->pvid, + ENTRYTYPE_LOCKED); + port->phylink_config.dev = &port->dev->dev; port->phylink_config.type = PHYLINK_NETDEV; port->phylink_pcs.poll = true; @@ -579,6 +641,9 @@ static void lan966x_init(struct lan966x *lan966x) { u32 p, i; + /* MAC table initialization */ + lan966x_mac_init(lan966x); + /* Flush queues */ lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) | GENMASK(1, 0), @@ -749,6 +814,7 @@ static int lan966x_probe(struct platform_device *pdev) { struct fwnode_handle *ports, *portnp; struct lan966x *lan966x; + u8 mac_addr[ETH_ALEN]; int err, i; lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL); @@ -758,6 +824,14 @@ static int lan966x_probe(struct platform_device *pdev) platform_set_drvdata(pdev, lan966x); lan966x->dev = &pdev->dev; + if (!device_get_mac_address(&pdev->dev, mac_addr)) { + ether_addr_copy(lan966x->base_mac, mac_addr); + } else { + pr_info("MAC addr was not set, use random MAC\n"); + eth_random_addr(lan966x->base_mac); + lan966x->base_mac[5] &= 0xf0; + } + ports = device_get_named_child_node(&pdev->dev, "ethernet-ports"); if (!ports) return dev_err_probe(&pdev->dev, -ENODEV, diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h index 39aecf532ba9..ddac44bfddf7 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h @@ -4,12 +4,16 @@ #define __LAN966X_MAIN_H__ #include <linux/etherdevice.h> +#include <linux/jiffies.h> #include <linux/phy.h> #include <linux/phylink.h> #include "lan966x_regs.h" #include "lan966x_ifh.h" +#define TABLE_UPDATE_SLEEP_US 10 +#define TABLE_UPDATE_TIMEOUT_US 100000 + #define LAN966X_BUFFER_CELL_SZ 64 #define LAN966X_BUFFER_MEMORY (160 * 1024) #define LAN966X_BUFFER_MIN_SZ 60 @@ -39,6 +43,19 @@ #define CPU_PORT 8 +/* MAC table entry types. + * ENTRYTYPE_NORMAL is subject to aging. + * ENTRYTYPE_LOCKED is not subject to aging. + * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast. + * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast. + */ +enum macaccess_entry_type { + ENTRYTYPE_NORMAL = 0, + ENTRYTYPE_LOCKED, + ENTRYTYPE_MACV4, + ENTRYTYPE_MACV6, +}; + struct lan966x_port; struct lan966x { @@ -51,6 +68,8 @@ struct lan966x { int shared_queue_sz; + u8 base_mac[ETH_ALEN]; + /* interrupts */ int xtr_irq; }; @@ -91,6 +110,18 @@ int lan966x_port_pcs_set(struct lan966x_port *port, struct lan966x_port_config *config); void lan966x_port_init(struct lan966x_port *port); +int lan966x_mac_learn(struct lan966x *lan966x, int port, + const unsigned char mac[ETH_ALEN], + unsigned int vid, + enum macaccess_entry_type type); +int lan966x_mac_forget(struct lan966x *lan966x, + const unsigned char mac[ETH_ALEN], + unsigned int vid, + enum macaccess_entry_type type); +int lan966x_mac_cpu_learn(struct lan966x *lan966x, const char *addr, u16 vid); +int lan966x_mac_cpu_forget(struct lan966x *lan966x, const char *addr, u16 vid); +void lan966x_mac_init(struct lan966x *lan966x); + static inline void __iomem *lan_addr(void __iomem *base[], int id, int tinst, int tcnt, int gbase, int ginst, |