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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/ethernet/microchip/lan966x/lan966x_main.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/ethernet/microchip/lan966x/lan966x_main.c')
-rw-r--r--drivers/net/ethernet/microchip/lan966x/lan966x_main.c1244
1 files changed, 1244 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
new file mode 100644
index 000000000..9ce46588a
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -0,0 +1,1244 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/module.h>
+#include <linux/if_bridge.h>
+#include <linux/if_vlan.h>
+#include <linux/iopoll.h>
+#include <linux/ip.h>
+#include <linux/of_platform.h>
+#include <linux/of_net.h>
+#include <linux/packing.h>
+#include <linux/phy/phy.h>
+#include <linux/reset.h>
+#include <net/addrconf.h>
+
+#include "lan966x_main.h"
+
+#define XTR_EOF_0 0x00000080U
+#define XTR_EOF_1 0x01000080U
+#define XTR_EOF_2 0x02000080U
+#define XTR_EOF_3 0x03000080U
+#define XTR_PRUNED 0x04000080U
+#define XTR_ABORT 0x05000080U
+#define XTR_ESCAPE 0x06000080U
+#define XTR_NOT_READY 0x07000080U
+#define XTR_VALID_BYTES(x) (4 - (((x) >> 24) & 3))
+
+#define IO_RANGES 2
+
+static const struct of_device_id lan966x_match[] = {
+ { .compatible = "microchip,lan966x-switch" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, lan966x_match);
+
+struct lan966x_main_io_resource {
+ enum lan966x_target id;
+ phys_addr_t offset;
+ int range;
+};
+
+static const struct lan966x_main_io_resource lan966x_main_iomap[] = {
+ { TARGET_CPU, 0xc0000, 0 }, /* 0xe00c0000 */
+ { TARGET_FDMA, 0xc0400, 0 }, /* 0xe00c0400 */
+ { TARGET_ORG, 0, 1 }, /* 0xe2000000 */
+ { TARGET_GCB, 0x4000, 1 }, /* 0xe2004000 */
+ { TARGET_QS, 0x8000, 1 }, /* 0xe2008000 */
+ { TARGET_PTP, 0xc000, 1 }, /* 0xe200c000 */
+ { TARGET_CHIP_TOP, 0x10000, 1 }, /* 0xe2010000 */
+ { TARGET_REW, 0x14000, 1 }, /* 0xe2014000 */
+ { TARGET_SYS, 0x28000, 1 }, /* 0xe2028000 */
+ { TARGET_DEV, 0x34000, 1 }, /* 0xe2034000 */
+ { TARGET_DEV + 1, 0x38000, 1 }, /* 0xe2038000 */
+ { TARGET_DEV + 2, 0x3c000, 1 }, /* 0xe203c000 */
+ { TARGET_DEV + 3, 0x40000, 1 }, /* 0xe2040000 */
+ { TARGET_DEV + 4, 0x44000, 1 }, /* 0xe2044000 */
+ { TARGET_DEV + 5, 0x48000, 1 }, /* 0xe2048000 */
+ { TARGET_DEV + 6, 0x4c000, 1 }, /* 0xe204c000 */
+ { TARGET_DEV + 7, 0x50000, 1 }, /* 0xe2050000 */
+ { TARGET_QSYS, 0x100000, 1 }, /* 0xe2100000 */
+ { TARGET_AFI, 0x120000, 1 }, /* 0xe2120000 */
+ { TARGET_ANA, 0x140000, 1 }, /* 0xe2140000 */
+};
+
+static int lan966x_create_targets(struct platform_device *pdev,
+ struct lan966x *lan966x)
+{
+ struct resource *iores[IO_RANGES];
+ void __iomem *begin[IO_RANGES];
+ int idx;
+
+ /* Initially map the entire range and after that update each target to
+ * point inside the region at the correct offset. It is possible that
+ * other devices access the same region so don't add any checks about
+ * this.
+ */
+ for (idx = 0; idx < IO_RANGES; idx++) {
+ iores[idx] = platform_get_resource(pdev, IORESOURCE_MEM,
+ idx);
+ if (!iores[idx]) {
+ dev_err(&pdev->dev, "Invalid resource\n");
+ return -EINVAL;
+ }
+
+ begin[idx] = devm_ioremap(&pdev->dev,
+ iores[idx]->start,
+ resource_size(iores[idx]));
+ if (!begin[idx]) {
+ dev_err(&pdev->dev, "Unable to get registers: %s\n",
+ iores[idx]->name);
+ return -ENOMEM;
+ }
+ }
+
+ for (idx = 0; idx < ARRAY_SIZE(lan966x_main_iomap); idx++) {
+ const struct lan966x_main_io_resource *iomap =
+ &lan966x_main_iomap[idx];
+
+ lan966x->regs[iomap->id] = begin[iomap->range] + iomap->offset;
+ }
+
+ return 0;
+}
+
+static bool lan966x_port_unique_address(struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ int p;
+
+ for (p = 0; p < lan966x->num_phys_ports; ++p) {
+ port = lan966x->ports[p];
+ if (!port || port->dev == dev)
+ continue;
+
+ if (ether_addr_equal(dev->dev_addr, port->dev->dev_addr))
+ return false;
+ }
+
+ return true;
+}
+
+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;
+
+ if (ether_addr_equal(addr->sa_data, dev->dev_addr))
+ return 0;
+
+ /* Learn the new net device MAC address in the mac table. */
+ ret = lan966x_mac_cpu_learn(lan966x, addr->sa_data, HOST_PVID);
+ if (ret)
+ return ret;
+
+ /* If there is another port with the same address as the dev, then don't
+ * delete it from the MAC table
+ */
+ if (!lan966x_port_unique_address(dev))
+ goto out;
+
+ /* Then forget the previous one. */
+ ret = lan966x_mac_cpu_forget(lan966x, dev->dev_addr, HOST_PVID);
+ if (ret)
+ return ret;
+
+out:
+ 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)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ int ret;
+
+ ret = snprintf(buf, len, "p%d", port->chip_port);
+ if (ret >= len)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int lan966x_port_open(struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ int err;
+
+ /* Enable receiving frames on the port, and activate auto-learning of
+ * MAC addresses.
+ */
+ lan_rmw(ANA_PORT_CFG_LEARNAUTO_SET(1) |
+ ANA_PORT_CFG_RECV_ENA_SET(1) |
+ ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port),
+ ANA_PORT_CFG_LEARNAUTO |
+ ANA_PORT_CFG_RECV_ENA |
+ ANA_PORT_CFG_PORTID_VAL,
+ lan966x, ANA_PORT_CFG(port->chip_port));
+
+ err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0);
+ if (err) {
+ netdev_err(dev, "Could not attach to PHY\n");
+ return err;
+ }
+
+ phylink_start(port->phylink);
+
+ return 0;
+}
+
+static int lan966x_port_stop(struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+
+ lan966x_port_config_down(port);
+ phylink_stop(port->phylink);
+ phylink_disconnect_phy(port->phylink);
+
+ return 0;
+}
+
+static int lan966x_port_inj_status(struct lan966x *lan966x)
+{
+ return lan_rd(lan966x, QS_INJ_STATUS);
+}
+
+static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp)
+{
+ u32 val;
+
+ if (lan_rd(lan966x, QS_INJ_STATUS) & QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp)))
+ return 0;
+
+ return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val,
+ QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp),
+ READL_SLEEP_US, READL_TIMEOUT_US);
+}
+
+static int lan966x_port_ifh_xmit(struct sk_buff *skb,
+ __be32 *ifh,
+ struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ u32 i, count, last;
+ u8 grp = 0;
+ u32 val;
+ int err;
+
+ val = lan_rd(lan966x, QS_INJ_STATUS);
+ if (!(QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp)) ||
+ (QS_INJ_STATUS_WMARK_REACHED_GET(val) & BIT(grp)))
+ goto err;
+
+ /* Write start of frame */
+ lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
+ QS_INJ_CTRL_SOF_SET(1),
+ lan966x, QS_INJ_CTRL(grp));
+
+ /* Write IFH header */
+ for (i = 0; i < IFH_LEN; ++i) {
+ /* Wait until the fifo is ready */
+ err = lan966x_port_inj_ready(lan966x, grp);
+ if (err)
+ goto err;
+
+ lan_wr((__force u32)ifh[i], lan966x, QS_INJ_WR(grp));
+ }
+
+ /* Write frame */
+ count = DIV_ROUND_UP(skb->len, 4);
+ last = skb->len % 4;
+ for (i = 0; i < count; ++i) {
+ /* Wait until the fifo is ready */
+ err = lan966x_port_inj_ready(lan966x, grp);
+ if (err)
+ goto err;
+
+ lan_wr(((u32 *)skb->data)[i], lan966x, QS_INJ_WR(grp));
+ }
+
+ /* Add padding */
+ while (i < (LAN966X_BUFFER_MIN_SZ / 4)) {
+ /* Wait until the fifo is ready */
+ err = lan966x_port_inj_ready(lan966x, grp);
+ if (err)
+ goto err;
+
+ lan_wr(0, lan966x, QS_INJ_WR(grp));
+ ++i;
+ }
+
+ /* Inidcate EOF and valid bytes in the last word */
+ lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
+ QS_INJ_CTRL_VLD_BYTES_SET(skb->len < LAN966X_BUFFER_MIN_SZ ?
+ 0 : last) |
+ QS_INJ_CTRL_EOF_SET(1),
+ lan966x, QS_INJ_CTRL(grp));
+
+ /* Add dummy CRC */
+ lan_wr(0, lan966x, QS_INJ_WR(grp));
+ skb_tx_timestamp(skb);
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+
+ if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+ LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
+ return NETDEV_TX_OK;
+
+ dev_consume_skb_any(skb);
+ return NETDEV_TX_OK;
+
+err:
+ if (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP &&
+ LAN966X_SKB_CB(skb)->rew_op == IFH_REW_OP_TWO_STEP_PTP)
+ lan966x_ptp_txtstamp_release(port, skb);
+
+ return NETDEV_TX_BUSY;
+}
+
+static void lan966x_ifh_set_bypass(void *ifh, u64 bypass)
+{
+ packing(ifh, &bypass, IFH_POS_BYPASS + IFH_WID_BYPASS - 1,
+ IFH_POS_BYPASS, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_port(void *ifh, u64 bypass)
+{
+ packing(ifh, &bypass, IFH_POS_DSTS + IFH_WID_DSTS - 1,
+ IFH_POS_DSTS, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_qos_class(void *ifh, u64 bypass)
+{
+ packing(ifh, &bypass, IFH_POS_QOS_CLASS + IFH_WID_QOS_CLASS - 1,
+ IFH_POS_QOS_CLASS, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_ipv(void *ifh, u64 bypass)
+{
+ packing(ifh, &bypass, IFH_POS_IPV + IFH_WID_IPV - 1,
+ IFH_POS_IPV, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_vid(void *ifh, u64 vid)
+{
+ packing(ifh, &vid, IFH_POS_TCI + IFH_WID_TCI - 1,
+ IFH_POS_TCI, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_rew_op(void *ifh, u64 rew_op)
+{
+ packing(ifh, &rew_op, IFH_POS_REW_CMD + IFH_WID_REW_CMD - 1,
+ IFH_POS_REW_CMD, IFH_LEN * 4, PACK, 0);
+}
+
+static void lan966x_ifh_set_timestamp(void *ifh, u64 timestamp)
+{
+ packing(ifh, &timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
+ IFH_POS_TIMESTAMP, IFH_LEN * 4, PACK, 0);
+}
+
+static netdev_tx_t lan966x_port_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ __be32 ifh[IFH_LEN];
+ int err;
+
+ memset(ifh, 0x0, sizeof(__be32) * IFH_LEN);
+
+ lan966x_ifh_set_bypass(ifh, 1);
+ lan966x_ifh_set_port(ifh, BIT_ULL(port->chip_port));
+ lan966x_ifh_set_qos_class(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
+ lan966x_ifh_set_ipv(ifh, skb->priority >= 7 ? 0x7 : skb->priority);
+ lan966x_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
+
+ if (port->lan966x->ptp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) {
+ err = lan966x_ptp_txtstamp_request(port, skb);
+ if (err)
+ return err;
+
+ lan966x_ifh_set_rew_op(ifh, LAN966X_SKB_CB(skb)->rew_op);
+ lan966x_ifh_set_timestamp(ifh, LAN966X_SKB_CB(skb)->ts_id);
+ }
+
+ spin_lock(&lan966x->tx_lock);
+ if (port->lan966x->fdma)
+ err = lan966x_fdma_xmit(skb, ifh, dev);
+ else
+ err = lan966x_port_ifh_xmit(skb, ifh, dev);
+ spin_unlock(&lan966x->tx_lock);
+
+ return err;
+}
+
+static int lan966x_port_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ int old_mtu = dev->mtu;
+ int err;
+
+ lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(new_mtu)),
+ lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
+ dev->mtu = new_mtu;
+
+ if (!lan966x->fdma)
+ return 0;
+
+ err = lan966x_fdma_change_mtu(lan966x);
+ if (err) {
+ lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(LAN966X_HW_MTU(old_mtu)),
+ lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
+ dev->mtu = old_mtu;
+ }
+
+ return err;
+}
+
+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, HOST_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, HOST_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 int lan966x_port_ioctl(struct net_device *dev, struct ifreq *ifr,
+ int cmd)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+
+ if (!phy_has_hwtstamp(dev->phydev) && port->lan966x->ptp) {
+ switch (cmd) {
+ case SIOCSHWTSTAMP:
+ return lan966x_ptp_hwtstamp_set(port, ifr);
+ case SIOCGHWTSTAMP:
+ return lan966x_ptp_hwtstamp_get(port, ifr);
+ }
+ }
+
+ if (!dev->phydev)
+ return -ENODEV;
+
+ return phy_mii_ioctl(dev->phydev, ifr, cmd);
+}
+
+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_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_get_stats64 = lan966x_stats_get,
+ .ndo_set_mac_address = lan966x_port_set_mac_address,
+ .ndo_get_port_parent_id = lan966x_port_get_parent_id,
+ .ndo_eth_ioctl = lan966x_port_ioctl,
+ .ndo_setup_tc = lan966x_tc_setup,
+};
+
+bool lan966x_netdevice_check(const struct net_device *dev)
+{
+ return dev->netdev_ops == &lan966x_port_netdev_ops;
+}
+
+bool lan966x_hw_offload(struct lan966x *lan966x, u32 port, struct sk_buff *skb)
+{
+ u32 val;
+
+ /* The IGMP and MLD frames are not forward by the HW if
+ * multicast snooping is enabled, therefor don't mark as
+ * offload to allow the SW to forward the frames accordingly.
+ */
+ val = lan_rd(lan966x, ANA_CPU_FWD_CFG(port));
+ if (!(val & (ANA_CPU_FWD_CFG_IGMP_REDIR_ENA |
+ ANA_CPU_FWD_CFG_MLD_REDIR_ENA)))
+ return true;
+
+ if (eth_type_vlan(skb->protocol)) {
+ skb = skb_vlan_untag(skb);
+ if (unlikely(!skb))
+ return false;
+ }
+
+ if (skb->protocol == htons(ETH_P_IP) &&
+ ip_hdr(skb)->protocol == IPPROTO_IGMP)
+ return false;
+
+ if (IS_ENABLED(CONFIG_IPV6) &&
+ skb->protocol == htons(ETH_P_IPV6) &&
+ ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) &&
+ !ipv6_mc_check_mld(skb))
+ return false;
+
+ return true;
+}
+
+static int lan966x_port_xtr_status(struct lan966x *lan966x, u8 grp)
+{
+ return lan_rd(lan966x, QS_XTR_RD(grp));
+}
+
+static int lan966x_port_xtr_ready(struct lan966x *lan966x, u8 grp)
+{
+ u32 val;
+
+ return read_poll_timeout(lan966x_port_xtr_status, val,
+ val != XTR_NOT_READY,
+ READL_SLEEP_US, READL_TIMEOUT_US, false,
+ lan966x, grp);
+}
+
+static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, u32 *rval)
+{
+ u32 bytes_valid;
+ u32 val;
+ int err;
+
+ val = lan_rd(lan966x, QS_XTR_RD(grp));
+ if (val == XTR_NOT_READY) {
+ err = lan966x_port_xtr_ready(lan966x, grp);
+ if (err)
+ return -EIO;
+ }
+
+ switch (val) {
+ case XTR_ABORT:
+ return -EIO;
+ case XTR_EOF_0:
+ case XTR_EOF_1:
+ case XTR_EOF_2:
+ case XTR_EOF_3:
+ case XTR_PRUNED:
+ bytes_valid = XTR_VALID_BYTES(val);
+ val = lan_rd(lan966x, QS_XTR_RD(grp));
+ if (val == XTR_ESCAPE)
+ *rval = lan_rd(lan966x, QS_XTR_RD(grp));
+ else
+ *rval = val;
+
+ return bytes_valid;
+ case XTR_ESCAPE:
+ *rval = lan_rd(lan966x, QS_XTR_RD(grp));
+
+ return 4;
+ default:
+ *rval = val;
+
+ return 4;
+ }
+}
+
+void lan966x_ifh_get_src_port(void *ifh, u64 *src_port)
+{
+ packing(ifh, src_port, IFH_POS_SRCPORT + IFH_WID_SRCPORT - 1,
+ IFH_POS_SRCPORT, IFH_LEN * 4, UNPACK, 0);
+}
+
+static void lan966x_ifh_get_len(void *ifh, u64 *len)
+{
+ packing(ifh, len, IFH_POS_LEN + IFH_WID_LEN - 1,
+ IFH_POS_LEN, IFH_LEN * 4, UNPACK, 0);
+}
+
+void lan966x_ifh_get_timestamp(void *ifh, u64 *timestamp)
+{
+ packing(ifh, timestamp, IFH_POS_TIMESTAMP + IFH_WID_TIMESTAMP - 1,
+ IFH_POS_TIMESTAMP, IFH_LEN * 4, UNPACK, 0);
+}
+
+static irqreturn_t lan966x_xtr_irq_handler(int irq, void *args)
+{
+ struct lan966x *lan966x = args;
+ int i, grp = 0, err = 0;
+
+ if (!(lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp)))
+ return IRQ_NONE;
+
+ do {
+ u64 src_port, len, timestamp;
+ struct net_device *dev;
+ struct sk_buff *skb;
+ int sz = 0, buf_len;
+ u32 ifh[IFH_LEN];
+ u32 *buf;
+ u32 val;
+
+ for (i = 0; i < IFH_LEN; i++) {
+ err = lan966x_rx_frame_word(lan966x, grp, &ifh[i]);
+ if (err != 4)
+ goto recover;
+ }
+
+ err = 0;
+
+ lan966x_ifh_get_src_port(ifh, &src_port);
+ lan966x_ifh_get_len(ifh, &len);
+ lan966x_ifh_get_timestamp(ifh, &timestamp);
+
+ WARN_ON(src_port >= lan966x->num_phys_ports);
+
+ dev = lan966x->ports[src_port]->dev;
+ skb = netdev_alloc_skb(dev, len);
+ if (unlikely(!skb)) {
+ netdev_err(dev, "Unable to allocate sk_buff\n");
+ err = -ENOMEM;
+ break;
+ }
+ buf_len = len - ETH_FCS_LEN;
+ buf = (u32 *)skb_put(skb, buf_len);
+
+ len = 0;
+ do {
+ sz = lan966x_rx_frame_word(lan966x, grp, &val);
+ if (sz < 0) {
+ kfree_skb(skb);
+ goto recover;
+ }
+
+ *buf++ = val;
+ len += sz;
+ } while (len < buf_len);
+
+ /* Read the FCS */
+ sz = lan966x_rx_frame_word(lan966x, grp, &val);
+ if (sz < 0) {
+ kfree_skb(skb);
+ goto recover;
+ }
+
+ /* Update the statistics if part of the FCS was read before */
+ len -= ETH_FCS_LEN - sz;
+
+ if (unlikely(dev->features & NETIF_F_RXFCS)) {
+ buf = (u32 *)skb_put(skb, ETH_FCS_LEN);
+ *buf = val;
+ }
+
+ lan966x_ptp_rxtstamp(lan966x, skb, timestamp);
+ skb->protocol = eth_type_trans(skb, dev);
+
+ if (lan966x->bridge_mask & BIT(src_port)) {
+ skb->offload_fwd_mark = 1;
+
+ skb_reset_network_header(skb);
+ if (!lan966x_hw_offload(lan966x, src_port, skb))
+ skb->offload_fwd_mark = 0;
+ }
+
+ if (!skb_defer_rx_timestamp(skb))
+ netif_rx(skb);
+
+ dev->stats.rx_bytes += len;
+ dev->stats.rx_packets++;
+
+recover:
+ if (sz < 0 || err)
+ lan_rd(lan966x, QS_XTR_RD(grp));
+
+ } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t lan966x_ana_irq_handler(int irq, void *args)
+{
+ struct lan966x *lan966x = args;
+
+ return lan966x_mac_irq_handler(lan966x);
+}
+
+static void lan966x_cleanup_ports(struct lan966x *lan966x)
+{
+ struct lan966x_port *port;
+ int p;
+
+ for (p = 0; p < lan966x->num_phys_ports; p++) {
+ port = lan966x->ports[p];
+ if (!port)
+ continue;
+
+ if (port->dev)
+ unregister_netdev(port->dev);
+
+ if (lan966x->fdma && lan966x->fdma_ndev == port->dev)
+ lan966x_fdma_netdev_deinit(lan966x, port->dev);
+
+ if (port->phylink) {
+ rtnl_lock();
+ lan966x_port_stop(port->dev);
+ rtnl_unlock();
+ phylink_destroy(port->phylink);
+ port->phylink = NULL;
+ }
+
+ if (port->fwnode)
+ fwnode_handle_put(port->fwnode);
+ }
+
+ disable_irq(lan966x->xtr_irq);
+ lan966x->xtr_irq = -ENXIO;
+
+ if (lan966x->ana_irq > 0) {
+ disable_irq(lan966x->ana_irq);
+ lan966x->ana_irq = -ENXIO;
+ }
+
+ if (lan966x->fdma)
+ devm_free_irq(lan966x->dev, lan966x->fdma_irq, lan966x);
+
+ if (lan966x->ptp_irq > 0)
+ devm_free_irq(lan966x->dev, lan966x->ptp_irq, lan966x);
+
+ if (lan966x->ptp_ext_irq > 0)
+ devm_free_irq(lan966x->dev, lan966x->ptp_ext_irq, lan966x);
+}
+
+static int lan966x_probe_port(struct lan966x *lan966x, u32 p,
+ phy_interface_t phy_mode,
+ struct fwnode_handle *portnp)
+{
+ struct lan966x_port *port;
+ struct phylink *phylink;
+ struct net_device *dev;
+ int err;
+
+ if (p >= lan966x->num_phys_ports)
+ return -EINVAL;
+
+ dev = devm_alloc_etherdev_mqs(lan966x->dev,
+ sizeof(struct lan966x_port),
+ NUM_PRIO_QUEUES, 1);
+ if (!dev)
+ return -ENOMEM;
+
+ SET_NETDEV_DEV(dev, lan966x->dev);
+ port = netdev_priv(dev);
+ port->dev = dev;
+ port->lan966x = lan966x;
+ port->chip_port = p;
+ lan966x->ports[p] = port;
+
+ dev->max_mtu = ETH_MAX_MTU;
+
+ dev->netdev_ops = &lan966x_port_netdev_ops;
+ dev->ethtool_ops = &lan966x_ethtool_ops;
+ dev->features |= NETIF_F_HW_VLAN_CTAG_TX |
+ NETIF_F_HW_VLAN_STAG_TX |
+ NETIF_F_HW_TC;
+ dev->hw_features |= NETIF_F_HW_TC;
+ 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, HOST_PVID,
+ ENTRYTYPE_LOCKED);
+
+ port->phylink_config.dev = &port->dev->dev;
+ port->phylink_config.type = PHYLINK_NETDEV;
+ port->phylink_pcs.poll = true;
+ port->phylink_pcs.ops = &lan966x_phylink_pcs_ops;
+
+ port->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE |
+ MAC_10 | MAC_100 | MAC_1000FD | MAC_2500FD;
+
+ phy_interface_set_rgmii(port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_MII,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_GMII,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_SGMII,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_QSGMII,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_QUSGMII,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_1000BASEX,
+ port->phylink_config.supported_interfaces);
+ __set_bit(PHY_INTERFACE_MODE_2500BASEX,
+ port->phylink_config.supported_interfaces);
+
+ phylink = phylink_create(&port->phylink_config,
+ portnp,
+ phy_mode,
+ &lan966x_phylink_mac_ops);
+ if (IS_ERR(phylink)) {
+ port->dev = NULL;
+ return PTR_ERR(phylink);
+ }
+
+ port->phylink = phylink;
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(lan966x->dev, "register_netdev failed\n");
+ return err;
+ }
+
+ lan966x_vlan_port_set_vlan_aware(port, 0);
+ lan966x_vlan_port_set_vid(port, HOST_PVID, false, false);
+ lan966x_vlan_port_apply(port);
+
+ return 0;
+}
+
+static void lan966x_init(struct lan966x *lan966x)
+{
+ u32 p, i;
+
+ /* MAC table initialization */
+ lan966x_mac_init(lan966x);
+
+ lan966x_vlan_init(lan966x);
+
+ /* Flush queues */
+ lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) |
+ GENMASK(1, 0),
+ lan966x, QS_XTR_FLUSH);
+
+ /* Allow to drain */
+ mdelay(1);
+
+ /* All Queues normal */
+ lan_wr(lan_rd(lan966x, QS_XTR_FLUSH) &
+ ~(GENMASK(1, 0)),
+ lan966x, QS_XTR_FLUSH);
+
+ /* Set MAC age time to default value, the entry is aged after
+ * 2 * AGE_PERIOD
+ */
+ lan_wr(ANA_AUTOAGE_AGE_PERIOD_SET(BR_DEFAULT_AGEING_TIME / 2 / HZ),
+ lan966x, ANA_AUTOAGE);
+
+ /* Disable learning for frames discarded by VLAN ingress filtering */
+ lan_rmw(ANA_ADVLEARN_VLAN_CHK_SET(1),
+ ANA_ADVLEARN_VLAN_CHK,
+ lan966x, ANA_ADVLEARN);
+
+ /* Setup frame ageing - "2 sec" - The unit is 6.5 us on lan966x */
+ lan_wr(SYS_FRM_AGING_AGE_TX_ENA_SET(1) |
+ (20000000 / 65),
+ lan966x, SYS_FRM_AGING);
+
+ /* Map the 8 CPU extraction queues to CPU port */
+ lan_wr(0, lan966x, QSYS_CPU_GROUP_MAP);
+
+ /* Do byte-swap and expect status after last data word
+ * Extraction: Mode: manual extraction) | Byte_swap
+ */
+ lan_wr(QS_XTR_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
+ QS_XTR_GRP_CFG_BYTE_SWAP_SET(1),
+ lan966x, QS_XTR_GRP_CFG(0));
+
+ /* Injection: Mode: manual injection | Byte_swap */
+ lan_wr(QS_INJ_GRP_CFG_MODE_SET(lan966x->fdma ? 2 : 1) |
+ QS_INJ_GRP_CFG_BYTE_SWAP_SET(1),
+ lan966x, QS_INJ_GRP_CFG(0));
+
+ lan_rmw(QS_INJ_CTRL_GAP_SIZE_SET(0),
+ QS_INJ_CTRL_GAP_SIZE,
+ lan966x, QS_INJ_CTRL(0));
+
+ /* Enable IFH insertion/parsing on CPU ports */
+ lan_wr(SYS_PORT_MODE_INCL_INJ_HDR_SET(1) |
+ SYS_PORT_MODE_INCL_XTR_HDR_SET(1),
+ lan966x, SYS_PORT_MODE(CPU_PORT));
+
+ /* Setup flooding PGIDs */
+ lan_wr(ANA_FLOODING_IPMC_FLD_MC4_DATA_SET(PGID_MCIPV4) |
+ ANA_FLOODING_IPMC_FLD_MC4_CTRL_SET(PGID_MC) |
+ ANA_FLOODING_IPMC_FLD_MC6_DATA_SET(PGID_MCIPV6) |
+ ANA_FLOODING_IPMC_FLD_MC6_CTRL_SET(PGID_MC),
+ lan966x, ANA_FLOODING_IPMC);
+
+ /* There are 8 priorities */
+ for (i = 0; i < 8; ++i)
+ lan_rmw(ANA_FLOODING_FLD_MULTICAST_SET(PGID_MC) |
+ ANA_FLOODING_FLD_UNICAST_SET(PGID_UC) |
+ ANA_FLOODING_FLD_BROADCAST_SET(PGID_BC),
+ ANA_FLOODING_FLD_MULTICAST |
+ ANA_FLOODING_FLD_UNICAST |
+ ANA_FLOODING_FLD_BROADCAST,
+ lan966x, ANA_FLOODING(i));
+
+ for (i = 0; i < PGID_ENTRIES; ++i)
+ /* Set all the entries to obey VLAN_VLAN */
+ lan_rmw(ANA_PGID_CFG_OBEY_VLAN_SET(1),
+ ANA_PGID_CFG_OBEY_VLAN,
+ lan966x, ANA_PGID_CFG(i));
+
+ for (p = 0; p < lan966x->num_phys_ports; p++) {
+ /* Disable bridging by default */
+ lan_rmw(ANA_PGID_PGID_SET(0x0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(p + PGID_SRC));
+
+ /* Do not forward BPDU frames to the front ports and copy them
+ * to CPU
+ */
+ lan_wr(0xffff, lan966x, ANA_CPU_FWD_BPDU_CFG(p));
+ }
+
+ /* Set source buffer size for each priority and each port to 1500 bytes */
+ for (i = 0; i <= QSYS_Q_RSRV; ++i) {
+ lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(i));
+ lan_wr(1500 / 64, lan966x, QSYS_RES_CFG(512 + i));
+ }
+
+ /* Enable switching to/from cpu port */
+ lan_wr(QSYS_SW_PORT_MODE_PORT_ENA_SET(1) |
+ QSYS_SW_PORT_MODE_SCH_NEXT_CFG_SET(1) |
+ QSYS_SW_PORT_MODE_INGRESS_DROP_MODE_SET(1),
+ lan966x, QSYS_SW_PORT_MODE(CPU_PORT));
+
+ /* Configure and enable the CPU port */
+ lan_rmw(ANA_PGID_PGID_SET(0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(CPU_PORT));
+ lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT)),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_CPU));
+
+ /* Multicast to all other ports */
+ lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_MC));
+
+ /* This will be controlled by mrouter ports */
+ lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_MCIPV4));
+
+ lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_MCIPV6));
+
+ /* Unicast to all other ports */
+ lan_rmw(GENMASK(lan966x->num_phys_ports - 1, 0),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_UC));
+
+ /* Broadcast to the CPU port and to other ports */
+ lan_rmw(ANA_PGID_PGID_SET(BIT(CPU_PORT) | GENMASK(lan966x->num_phys_ports - 1, 0)),
+ ANA_PGID_PGID,
+ lan966x, ANA_PGID(PGID_BC));
+
+ lan_wr(REW_PORT_CFG_NO_REWRITE_SET(1),
+ lan966x, REW_PORT_CFG(CPU_PORT));
+
+ lan_rmw(ANA_ANAINTR_INTR_ENA_SET(1),
+ ANA_ANAINTR_INTR_ENA,
+ lan966x, ANA_ANAINTR);
+
+ spin_lock_init(&lan966x->tx_lock);
+
+ lan966x_taprio_init(lan966x);
+}
+
+static int lan966x_ram_init(struct lan966x *lan966x)
+{
+ return lan_rd(lan966x, SYS_RAM_INIT);
+}
+
+static int lan966x_reset_switch(struct lan966x *lan966x)
+{
+ struct reset_control *switch_reset;
+ int val = 0;
+ int ret;
+
+ switch_reset = devm_reset_control_get_optional_shared(lan966x->dev,
+ "switch");
+ if (IS_ERR(switch_reset))
+ return dev_err_probe(lan966x->dev, PTR_ERR(switch_reset),
+ "Could not obtain switch reset");
+
+ reset_control_reset(switch_reset);
+
+ /* Don't reinitialize the switch core, if it is already initialized. In
+ * case it is initialized twice, some pointers inside the queue system
+ * in HW will get corrupted and then after a while the queue system gets
+ * full and no traffic is passing through the switch. The issue is seen
+ * when loading and unloading the driver and sending traffic through the
+ * switch.
+ */
+ if (lan_rd(lan966x, SYS_RESET_CFG) & SYS_RESET_CFG_CORE_ENA)
+ return 0;
+
+ lan_wr(SYS_RESET_CFG_CORE_ENA_SET(0), lan966x, SYS_RESET_CFG);
+ lan_wr(SYS_RAM_INIT_RAM_INIT_SET(1), lan966x, SYS_RAM_INIT);
+ ret = readx_poll_timeout(lan966x_ram_init, lan966x,
+ val, (val & BIT(1)) == 0, READL_SLEEP_US,
+ READL_TIMEOUT_US);
+ if (ret)
+ return ret;
+
+ lan_wr(SYS_RESET_CFG_CORE_ENA_SET(1), lan966x, SYS_RESET_CFG);
+
+ return 0;
+}
+
+static int lan966x_probe(struct platform_device *pdev)
+{
+ struct fwnode_handle *ports, *portnp;
+ struct lan966x *lan966x;
+ u8 mac_addr[ETH_ALEN];
+ int err;
+
+ lan966x = devm_kzalloc(&pdev->dev, sizeof(*lan966x), GFP_KERNEL);
+ if (!lan966x)
+ return -ENOMEM;
+
+ 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;
+ }
+
+ err = lan966x_create_targets(pdev, lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err,
+ "Failed to create targets");
+
+ err = lan966x_reset_switch(lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Reset failed");
+
+ lan966x->num_phys_ports = NUM_PHYS_PORTS;
+ lan966x->ports = devm_kcalloc(&pdev->dev, lan966x->num_phys_ports,
+ sizeof(struct lan966x_port *),
+ GFP_KERNEL);
+ if (!lan966x->ports)
+ return -ENOMEM;
+
+ /* There QS system has 32KB of memory */
+ lan966x->shared_queue_sz = LAN966X_BUFFER_MEMORY;
+
+ /* set irq */
+ lan966x->xtr_irq = platform_get_irq_byname(pdev, "xtr");
+ if (lan966x->xtr_irq <= 0)
+ return -EINVAL;
+
+ err = devm_request_threaded_irq(&pdev->dev, lan966x->xtr_irq, NULL,
+ lan966x_xtr_irq_handler, IRQF_ONESHOT,
+ "frame extraction", lan966x);
+ if (err) {
+ pr_err("Unable to use xtr irq");
+ return -ENODEV;
+ }
+
+ lan966x->ana_irq = platform_get_irq_byname(pdev, "ana");
+ if (lan966x->ana_irq > 0) {
+ err = devm_request_threaded_irq(&pdev->dev, lan966x->ana_irq, NULL,
+ lan966x_ana_irq_handler, IRQF_ONESHOT,
+ "ana irq", lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Unable to use ana irq");
+ }
+
+ lan966x->ptp_irq = platform_get_irq_byname(pdev, "ptp");
+ if (lan966x->ptp_irq > 0) {
+ err = devm_request_threaded_irq(&pdev->dev, lan966x->ptp_irq, NULL,
+ lan966x_ptp_irq_handler, IRQF_ONESHOT,
+ "ptp irq", lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Unable to use ptp irq");
+
+ lan966x->ptp = 1;
+ }
+
+ lan966x->fdma_irq = platform_get_irq_byname(pdev, "fdma");
+ if (lan966x->fdma_irq > 0) {
+ err = devm_request_irq(&pdev->dev, lan966x->fdma_irq,
+ lan966x_fdma_irq_handler, 0,
+ "fdma irq", lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err, "Unable to use fdma irq");
+
+ lan966x->fdma = true;
+ }
+
+ if (lan966x->ptp) {
+ lan966x->ptp_ext_irq = platform_get_irq_byname(pdev, "ptp-ext");
+ if (lan966x->ptp_ext_irq > 0) {
+ err = devm_request_threaded_irq(&pdev->dev,
+ lan966x->ptp_ext_irq, NULL,
+ lan966x_ptp_ext_irq_handler,
+ IRQF_ONESHOT,
+ "ptp-ext irq", lan966x);
+ if (err)
+ return dev_err_probe(&pdev->dev, err,
+ "Unable to use ptp-ext irq");
+ }
+ }
+
+ ports = device_get_named_child_node(&pdev->dev, "ethernet-ports");
+ if (!ports)
+ return dev_err_probe(&pdev->dev, -ENODEV,
+ "no ethernet-ports child found\n");
+
+ /* init switch */
+ lan966x_init(lan966x);
+ lan966x_stats_init(lan966x);
+
+ /* go over the child nodes */
+ fwnode_for_each_available_child_node(ports, portnp) {
+ phy_interface_t phy_mode;
+ struct phy *serdes;
+ u32 p;
+
+ if (fwnode_property_read_u32(portnp, "reg", &p))
+ continue;
+
+ phy_mode = fwnode_get_phy_mode(portnp);
+ err = lan966x_probe_port(lan966x, p, phy_mode, portnp);
+ if (err)
+ goto cleanup_ports;
+
+ /* Read needed configuration */
+ lan966x->ports[p]->config.portmode = phy_mode;
+ lan966x->ports[p]->fwnode = fwnode_handle_get(portnp);
+
+ serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL);
+ if (PTR_ERR(serdes) == -ENODEV)
+ serdes = NULL;
+ if (IS_ERR(serdes)) {
+ err = PTR_ERR(serdes);
+ goto cleanup_ports;
+ }
+ lan966x->ports[p]->serdes = serdes;
+
+ lan966x_port_init(lan966x->ports[p]);
+ }
+
+ fwnode_handle_put(ports);
+
+ lan966x_mdb_init(lan966x);
+ err = lan966x_fdb_init(lan966x);
+ if (err)
+ goto cleanup_ports;
+
+ err = lan966x_ptp_init(lan966x);
+ if (err)
+ goto cleanup_fdb;
+
+ err = lan966x_fdma_init(lan966x);
+ if (err)
+ goto cleanup_ptp;
+
+ return 0;
+
+cleanup_ptp:
+ lan966x_ptp_deinit(lan966x);
+
+cleanup_fdb:
+ lan966x_fdb_deinit(lan966x);
+
+cleanup_ports:
+ fwnode_handle_put(ports);
+ fwnode_handle_put(portnp);
+
+ lan966x_cleanup_ports(lan966x);
+
+ cancel_delayed_work_sync(&lan966x->stats_work);
+ destroy_workqueue(lan966x->stats_queue);
+ mutex_destroy(&lan966x->stats_lock);
+
+ return err;
+}
+
+static int lan966x_remove(struct platform_device *pdev)
+{
+ struct lan966x *lan966x = platform_get_drvdata(pdev);
+
+ lan966x_taprio_deinit(lan966x);
+ lan966x_fdma_deinit(lan966x);
+ lan966x_cleanup_ports(lan966x);
+
+ cancel_delayed_work_sync(&lan966x->stats_work);
+ destroy_workqueue(lan966x->stats_queue);
+ mutex_destroy(&lan966x->stats_lock);
+
+ lan966x_mac_purge_entries(lan966x);
+ lan966x_mdb_deinit(lan966x);
+ lan966x_fdb_deinit(lan966x);
+ lan966x_ptp_deinit(lan966x);
+
+ return 0;
+}
+
+static struct platform_driver lan966x_driver = {
+ .probe = lan966x_probe,
+ .remove = lan966x_remove,
+ .driver = {
+ .name = "lan966x-switch",
+ .of_match_table = lan966x_match,
+ },
+};
+
+static int __init lan966x_switch_driver_init(void)
+{
+ int ret;
+
+ lan966x_register_notifier_blocks();
+
+ ret = platform_driver_register(&lan966x_driver);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ lan966x_unregister_notifier_blocks();
+ return ret;
+}
+
+static void __exit lan966x_switch_driver_exit(void)
+{
+ platform_driver_unregister(&lan966x_driver);
+ lan966x_unregister_notifier_blocks();
+}
+
+module_init(lan966x_switch_driver_init);
+module_exit(lan966x_switch_driver_exit);
+
+MODULE_DESCRIPTION("Microchip LAN966X switch driver");
+MODULE_AUTHOR("Horatiu Vultur <horatiu.vultur@microchip.com>");
+MODULE_LICENSE("Dual MIT/GPL");