This patch adds support for netdev and phylink in the switch. The
injection + extraction is register based. This will be replaced with DMA
accees.
Signed-off-by: Horatiu Vultur <horatiu.vultur@xxxxxxxxxxxxx>
---
.../net/ethernet/microchip/lan966x/Makefile | 2 +-
.../ethernet/microchip/lan966x/lan966x_ifh.h | 173 +++++++
.../ethernet/microchip/lan966x/lan966x_main.c | 481 +++++++++++++++++-
.../ethernet/microchip/lan966x/lan966x_main.h | 38 ++
.../microchip/lan966x/lan966x_phylink.c | 92 ++++
.../ethernet/microchip/lan966x/lan966x_port.c | 301 +++++++++++
6 files changed, 1083 insertions(+), 4 deletions(-)
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c
create mode 100644 drivers/net/ethernet/microchip/lan966x/lan966x_port.c
diff --git a/drivers/net/ethernet/microchip/lan966x/Makefile b/drivers/net/ethernet/microchip/lan966x/Makefile
index 7ea90410a0b2..e18c9b2d0bb7 100644
--- a/drivers/net/ethernet/microchip/lan966x/Makefile
+++ b/drivers/net/ethernet/microchip/lan966x/Makefile
@@ -5,4 +5,4 @@
obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
-lan966x-switch-objs := lan966x_main.o
+lan966x-switch-objs := lan966x_main.o lan966x_phylink.o lan966x_port.o
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h b/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h
new file mode 100644
index 000000000000..ca3314789d18
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_ifh.h
@@ -0,0 +1,173 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __LAN966X_IFH_H__
+#define __LAN966X_IFH_H__
+
+/* Fields with description (*) should just be cleared upon injection
+ * IFH is transmitted MSByte first (Highest bit pos sent as MSB of first byte)
+ */
+
+#define IFH_LEN 7
+
+/* Timestamp for frame */
+#define IFH_POS_TIMESTAMP 192
+
+/* Bypass analyzer with a prefilled IFH */
+#define IFH_POS_BYPASS 191
+
+/* Masqueraded injection with masq_port defining logical source port */
+#define IFH_POS_MASQ 190
+
+/* Masqueraded port number for injection */
+#define IFH_POS_MASQ_PORT 186
+
+/* Frame length (*) */
+#define IFH_POS_LEN 178
+
+/* Cell filling mode. Full(0),Etype(1), LlctOpt(2), Llct(3) */
+#define IFH_POS_WRDMODE 176
+
+/* Frame has 16 bits rtag removed compared to line data */
+#define IFH_POS_RTAG48 175
+
+/* Frame has a redundancy tag */
+#define IFH_POS_HAS_RED_TAG 174
+
+/* Frame has been cut through forwarded (*) */
+#define IFH_POS_CUTTHRU 173
+
+/* Rewriter command */
+#define IFH_POS_REW_CMD 163
+
+/* Enable OAM-related rewriting. PDU_TYPE encodes OAM type. */
+#define IFH_POS_REW_OAM 162
+
+/* PDU type. Encoding: (0-NONE, 1-Y1731_CCM, 2-MRP_TST, 3-MRP_ITST, 4-DLR_BCN,
+ * 5-DLR_ADV, 6-RTE_NULL_INJ, 7-IPV4, 8-IPV6, 9-Y1731_NON_CCM).
+ */
+#define IFH_POS_PDU_TYPE 158
+
+/* Update FCS before transmission */
+#define IFH_POS_FCS_UPD 157
+
+/* Classified DSCP value of frame */
+#define IFH_POS_DSCP 151
+
+/* Yellow indication */
+#define IFH_POS_DP 150
+
+/* Process in RTE/inbound */
+#define IFH_POS_RTE_INB_UPDATE 149
+
+/* Number of tags to pop from frame */
+#define IFH_POS_POP_CNT 147
+
+/* Number of tags in front of the ethertype */
+#define IFH_POS_ETYPE_OFS 145
+
+/* Logical source port of frame (*) */
+#define IFH_POS_SRCPORT 141
+
+/* Sequence number in redundancy tag */
+#define IFH_POS_SEQ_NUM 120
+
+/* Stagd flag and classified TCI of frame (PCP/DEI/VID) */
+#define IFH_POS_TCI 103
+
+/* Classified internal priority for queuing */
+#define IFH_POS_QOS_CLASS 100
+
+/* Bit mask with eight cpu copy classses */
+#define IFH_POS_CPUQ 92
+
+/* Relearn + learn flags (*) */
+#define IFH_POS_LEARN_FLAGS 90
+
+/* SFLOW identifier for frame (0-8: Tx port, 9: Rx sampling, 15: No sampling) */
+#define IFH_POS_SFLOW_ID 86
+
+/* Set if an ACL/S2 rule was hit (*).
+ * Super priority: acl_hit=0 and acl_hit(4)=1.
+ */
+#define IFH_POS_ACL_HIT 85
+
+/* S2 rule index hit (*) */
+#define IFH_POS_ACL_IDX 79
+
+/* ISDX as classified by S1 */
+#define IFH_POS_ISDX 71
+
+/* Destination ports for frame */
+#define IFH_POS_DSTS 62
+
+/* Storm policer to be applied: None/Uni/Multi/Broad (*) */
+#define IFH_POS_FLOOD 60
+
+/* Redundancy tag operation */
+#define IFH_POS_SEQ_OP 58
+
+/* Classified internal priority for resourcemgt, tagging etc */
+#define IFH_POS_IPV 55
+
+/* Frame is for AFI use */
+#define IFH_POS_AFI 54
+
+/* Internal aging value (*) */
+#define IFH_POS_AGED 52
+
+/* RTP Identifier */
+#define IFH_POS_RTP_ID 42
+
+/* RTP MRPD flow */
+#define IFH_POS_RTP_SUBID 41
+
+/* Profinet DataStatus or opcua GroupVersion MSB */
+#define IFH_POS_PN_DATA_STATUS 33
+
+/* Profinet transfer status (1 iff the status is 0) */
+#define IFH_POS_PN_TRANSF_STATUS_ZERO 32
+
+/* Profinet cycle counter or opcua NetworkMessageNumber */
+#define IFH_POS_PN_CC 16
+
+#define IFH_WID_TIMESTAMP 32
+#define IFH_WID_BYPASS 1
+#define IFH_WID_MASQ 1
+#define IFH_WID_MASQ_PORT 4
+#define IFH_WID_LEN 14
+#define IFH_WID_WRDMODE 2
+#define IFH_WID_RTAG48 1
+#define IFH_WID_HAS_RED_TAG 1
+#define IFH_WID_CUTTHRU 1
+#define IFH_WID_REW_CMD 10
+#define IFH_WID_REW_OAM 1
+#define IFH_WID_PDU_TYPE 4
+#define IFH_WID_FCS_UPD 1
+#define IFH_WID_DSCP 6
+#define IFH_WID_DP 1
+#define IFH_WID_RTE_INB_UPDATE 1
+#define IFH_WID_POP_CNT 2
+#define IFH_WID_ETYPE_OFS 2
+#define IFH_WID_SRCPORT 4
+#define IFH_WID_SEQ_NUM 16
+#define IFH_WID_TCI 17
+#define IFH_WID_QOS_CLASS 3
+#define IFH_WID_CPUQ 8
+#define IFH_WID_LEARN_FLAGS 2
+#define IFH_WID_SFLOW_ID 4
+#define IFH_WID_ACL_HIT 1
+#define IFH_WID_ACL_IDX 6
+#define IFH_WID_ISDX 8
+#define IFH_WID_DSTS 9
+#define IFH_WID_FLOOD 2
+#define IFH_WID_SEQ_OP 2
+#define IFH_WID_IPV 3
+#define IFH_WID_AFI 1
+#define IFH_WID_AGED 2
+#define IFH_WID_RTP_ID 10
+#define IFH_WID_RTP_SUBID 1
+#define IFH_WID_PN_DATA_STATUS 8
+#define IFH_WID_PN_TRANSF_STATUS_ZERO 1
+#define IFH_WID_PN_CC 16
+
+#endif /* __LAN966X_IFH_H__ */
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
index 2984f510ae27..cf147d44b345 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c
@@ -3,13 +3,25 @@
#include <asm/memory.h>
#include <linux/module.h>
#include <linux/if_bridge.h>
+#include <linux/if_vlan.h>
#include <linux/iopoll.h>
#include <linux/of_platform.h>
#include <linux/of_net.h>
+#include <linux/phy/phy.h>
#include <linux/reset.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 READL_SLEEP_US 10
#define READL_TIMEOUT_US 100000000
@@ -82,23 +94,450 @@ static int lan966x_create_targets(struct platform_device *pdev,
return 0;
}
+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;
+
+ if (port->serdes) {
+ err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET,
+ port->config.phy_mode);
+ if (err) {
+ netdev_err(dev, "Could not set mode of SerDes\n");
+ return err;
+ }
+ }
+
+ /* Enable receiving frames on the port, and activate auto-learning of
+ * MAC addresses.
+ */
+ lan_wr(ANA_PORT_CFG_LEARNAUTO_SET(1) |
+ ANA_PORT_CFG_RECV_ENA_SET(1) |
+ ANA_PORT_CFG_PORTID_VAL_SET(port->chip_port),
+ lan966x, ANA_PORT_CFG(port->chip_port));
+
+ err = phylink_of_phy_connect(port->phylink, to_of_node(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 void lan966x_ifh_inject(u32 *ifh, size_t val, size_t pos, size_t length)
+{
+ int i;
+
+ for (i = pos; i < pos + length; ++i) {
+ if (val & BIT(i - pos))
+ ifh[IFH_LEN - i / 32 - 1] |= BIT(i % 32);
+ else
+ ifh[IFH_LEN - i / 32 - 1] &= ~(BIT(i % 32));
+ }
+}
+
+static void lan966x_gen_ifh(u32 *ifh, struct lan966x_frame_info *info,
+ struct lan966x *lan966x)
+{
+ lan966x_ifh_inject(ifh, 1, IFH_POS_BYPASS, 1);
+ lan966x_ifh_inject(ifh, info->port, IFH_POS_DSTS, IFH_WID_DSTS);
+ lan966x_ifh_inject(ifh, info->qos_class, IFH_POS_QOS_CLASS,
+ IFH_WID_QOS_CLASS);
+ lan966x_ifh_inject(ifh, info->ipv, IFH_POS_IPV, IFH_WID_IPV);
+}
+
+static int lan966x_port_ifh_xmit(struct sk_buff *skb,
+ struct lan966x_frame_info *info,
+ struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+ u32 i, count, last;
+ u32 ifh[IFH_LEN];
+ u8 grp = 0;
+ u32 val;
+
+ 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)))
+ return NETDEV_TX_BUSY;
+
+ /* Write start of frame */
+ lan_wr(QS_INJ_CTRL_GAP_SIZE_SET(1) |
+ QS_INJ_CTRL_SOF_SET(1),
+ lan966x, QS_INJ_CTRL(grp));
+
+ memset(ifh, 0x0, sizeof(u32) * IFH_LEN);
+ lan966x_gen_ifh(ifh, info, lan966x);
+
+ /* Write IFH header */
+ for (i = 0; i < IFH_LEN; ++i) {
+ /* Wait until the fifo is ready */
+ while (!(QS_INJ_STATUS_FIFO_RDY_GET(lan_rd(lan966x, QS_INJ_STATUS)) &
+ BIT(grp)))
+ ;
+
+ lan_wr((__force u32)cpu_to_be32(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 */
+ while (!(QS_INJ_STATUS_FIFO_RDY_GET(lan_rd(lan966x, QS_INJ_STATUS)) &
+ BIT(grp)))
+ ;
+
+ 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 */
+ while (!(QS_INJ_STATUS_FIFO_RDY_GET(lan_rd(lan966x, QS_INJ_STATUS)) &
+ BIT(grp)))
+ ;
+
+ 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;
+
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+}
+
+static int lan966x_port_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x_frame_info info;
+
+ memset(&info, 0, sizeof(info));
+
+ info.port = BIT(port->chip_port);
+ info.vid = skb_vlan_tag_get(skb);
+
+ /* Adjust frame priority to priority queue */
+ info.qos_class = skb->priority >= 0x7 ? 0x7 : skb->priority;
+ info.ipv = info.qos_class;
+
+ return lan966x_port_ifh_xmit(skb, &info, dev);
+}
+
+static void lan966x_set_promisc(struct lan966x_port *port, bool enable)
+{
+ struct lan966x *lan966x = port->lan966x;
+
+ lan_rmw(ANA_CPU_FWD_CFG_SRC_COPY_ENA_SET(enable),
+ ANA_CPU_FWD_CFG_SRC_COPY_ENA,
+ lan966x, ANA_CPU_FWD_CFG(port->chip_port));
+}
+
+static void lan966x_change_rx_flags(struct net_device *dev, int flags)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+
+ if (!(flags & IFF_PROMISC))
+ return;
+
+ if (dev->flags & IFF_PROMISC)
+ lan966x_set_promisc(port, true);
+ else
+ lan966x_set_promisc(port, false);
+}
+
+static int lan966x_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct lan966x_port *port = netdev_priv(dev);
+ struct lan966x *lan966x = port->lan966x;
+
+ lan_wr(DEV_MAC_MAXLEN_CFG_MAX_LEN_SET(new_mtu),
+ lan966x, DEV_MAC_MAXLEN_CFG(port->chip_port));
+ dev->mtu = new_mtu;
+
+ 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_change_rx_flags,
+ .ndo_change_mtu = lan966x_change_mtu,
+ .ndo_get_phys_port_name = lan966x_port_get_phys_port_name,
+};
+
+static int lan966x_ifh_extract(u32 *ifh, size_t pos, size_t length)
+{
+ int val = 0;
+ int i;
+
+ for (i = pos; i < pos + length; ++i)
+ val |= ((ifh[IFH_LEN - i / 32 - 1] & BIT(i % 32)) >>
+ (i % 32)) << (i - pos);
+
+ return val;
+}
+
+static int lan966x_parse_ifh(u32 *ifh, struct lan966x_frame_info *info)
+{
+ int i;
+
+ /* The IFH is in network order, switch to CPU order */
+ for (i = 0; i < IFH_LEN; i++)
+ ifh[i] = ntohl((__force __be32)ifh[i]);
+
+ info->len = lan966x_ifh_extract(ifh, IFH_POS_LEN, IFH_WID_LEN);
+ info->port = lan966x_ifh_extract(ifh, IFH_POS_SRCPORT, IFH_WID_SRCPORT);
+
+ info->vid = lan966x_ifh_extract(ifh, IFH_POS_TCI, IFH_WID_TCI);
+ info->timestamp = lan966x_ifh_extract(ifh, IFH_POS_TIMESTAMP,
+ IFH_WID_TIMESTAMP);
+ return 0;
+}
+
+static int lan966x_rx_frame_word(struct lan966x *lan966x, u8 grp, bool ifh,
+ u32 *rval)
+{
+ u32 bytes_valid;
+ u32 val;
+
+ val = lan_rd(lan966x, QS_XTR_RD(grp));
+ if (val == XTR_NOT_READY) {
+ if (ifh)
+ return -EIO;
+
+ do {
+ val = lan_rd(lan966x, QS_XTR_RD(grp));
+ } while (val == XTR_NOT_READY);
+ }
+
+ 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;
+ }
+}
+
+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 {
+ u32 ifh[IFH_LEN] = { 0 };
+ struct lan966x_frame_info info;
+ struct net_device *dev;
+ int sz, len, buf_len;
+ struct sk_buff *skb;
+ u32 *buf;
+ u32 val;
+
+ for (i = 0; i < IFH_LEN; i++) {
+ err = lan966x_rx_frame_word(lan966x, grp, true,
+ &ifh[i]);
+ if (err != 4)
+ break;
+ }
+
+ if (err != 4)
+ break;
+
+ err = 0;
+
+ lan966x_parse_ifh(ifh, &info);
+ WARN_ON(info.port >= lan966x->num_phys_ports);
+
+ dev = lan966x->ports[info.port]->dev;
+ skb = netdev_alloc_skb(dev, info.len);
+ if (unlikely(!skb)) {
+ netdev_err(dev, "Unable to allocate sk_buff\n");
+ err = -ENOMEM;
+ break;
+ }
+ buf_len = info.len - ETH_FCS_LEN;
+ buf = (u32 *)skb_put(skb, buf_len);
+
+ len = 0;
+ do {
+ sz = lan966x_rx_frame_word(lan966x, grp, false, &val);
+ *buf++ = val;
+ len += sz;
+ } while (len < buf_len);
+
+ /* Read the FCS */
+ sz = lan966x_rx_frame_word(lan966x, grp, false, &val);
+
+ /* 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;
+ }
+
+ if (sz < 0) {
+ err = sz;
+ break;
+ }
+
+ skb->protocol = eth_type_trans(skb, dev);
+
+ netif_rx_ni(skb);
+ dev->stats.rx_bytes += len;
+ dev->stats.rx_packets++;
+ } while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp));
+
+ if (err)
+ while (lan_rd(lan966x, QS_XTR_DATA_PRESENT) & BIT(grp))
+ lan_rd(lan966x, QS_XTR_RD(grp));
+
+ return IRQ_HANDLED;
+}
+
+static void lan966x_cleanup_ports(struct lan966x *lan966x)
+{
+ struct lan966x_port *port;
+ int portno;
+
+ for (portno = 0; portno < lan966x->num_phys_ports; portno++) {
+ port = lan966x->ports[portno];
+ if (!port)
+ continue;
+
+ if (port->phylink) {
+ rtnl_lock();
+ lan966x_port_stop(port->dev);
+ rtnl_unlock();
+ port->phylink = NULL;
+ }
+
+ if (port->fwnode)
+ fwnode_handle_put(port->fwnode);
+
+ if (port->dev)
+ unregister_netdev(port->dev);
+ }
+}
+
static int lan966x_probe_port(struct lan966x *lan966x, u8 port,
phy_interface_t phy_mode)
{
struct lan966x_port *lan966x_port;
+ struct phylink *phylink;
+ struct net_device *dev;
+ int err;
if (port >= lan966x->num_phys_ports)
return -EINVAL;
- lan966x_port = devm_kzalloc(lan966x->dev, sizeof(*lan966x_port),
- GFP_KERNEL);
+ dev = devm_alloc_etherdev_mqs(lan966x->dev,
+ sizeof(struct lan966x_port), 8, 1);
+ if (!dev)
+ return -ENOMEM;
+ SET_NETDEV_DEV(dev, lan966x->dev);
+ lan966x_port = netdev_priv(dev);
+ lan966x_port->dev = dev;
lan966x_port->lan966x = lan966x;
lan966x_port->chip_port = port;
lan966x_port->pvid = PORT_PVID;
lan966x->ports[port] = lan966x_port;
+ dev->max_mtu = ETH_MAX_MTU;
+
+ dev->netdev_ops = &lan966x_port_netdev_ops;
+ dev->needed_headroom = IFH_LEN * sizeof(u32);
+
+ err = register_netdev(dev);
+ if (err) {
+ dev_err(lan966x->dev, "register_netdev failed\n");
+ goto err_register_netdev;
+ }
+
+ lan966x_port->phylink_config.dev = &lan966x_port->dev->dev;
+ lan966x_port->phylink_config.type = PHYLINK_NETDEV;
+ lan966x_port->phylink_config.pcs_poll = true;
+
+ phylink = phylink_create(&lan966x_port->phylink_config,
+ lan966x_port->fwnode,
+ phy_mode,
+ &lan966x_phylink_mac_ops);
+ if (IS_ERR(phylink))
+ return PTR_ERR(phylink);
+
+ lan966x_port->phylink = phylink;
+
return 0;
+
+err_register_netdev:
+ return err;
}
static void lan966x_init(struct lan966x *lan966x)
@@ -306,6 +745,19 @@ static int lan966x_probe(struct platform_device *pdev)
/* 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;
+ }
+
/* init switch */
lan966x_init(lan966x);
@@ -321,17 +773,40 @@ static int lan966x_probe(struct platform_device *pdev)
phy_mode = fwnode_get_phy_mode(portnp);
err = lan966x_probe_port(lan966x, port, phy_mode);
if (err)
- return err;
+ goto cleanup_ports;
+
+ /* Read needed configuration */
+ lan966x->ports[port]->config.phy_mode = phy_mode;
+ lan966x->ports[port]->config.portmode = phy_mode;
+ lan966x->ports[port]->fwnode = portnp;
+
+ serdes = devm_of_phy_get(lan966x->dev, to_of_node(portnp), NULL);
+ if (!IS_ERR(serdes))
+ lan966x->ports[port]->serdes = serdes;
+
+ lan966x_port_init(lan966x->ports[port]);
}
return 0;
+cleanup_ports:
+ fwnode_handle_put(portnp);
+
+ disable_irq(lan966x->xtr_irq);
+ lan966x->xtr_irq = -ENXIO;
+ lan966x_cleanup_ports(lan966x);
out:
return err;
}
static int lan966x_remove(struct platform_device *pdev)
{
+ struct lan966x *lan966x = platform_get_drvdata(pdev);
+
+ disable_irq(lan966x->xtr_irq);
+ lan966x->xtr_irq = -ENXIO;
+ lan966x_cleanup_ports(lan966x);
+
return 0;
}
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
index 0c5fa14437a5..9ae1582f5cdb 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.h
@@ -3,7 +3,12 @@
#ifndef __LAN966X_MAIN_H__
#define __LAN966X_MAIN_H__
+#include <linux/etherdevice.h>
+#include <linux/phy.h>
+#include <linux/phylink.h>
+
#include "lan966x_regs.h"
+#include "lan966x_ifh.h"
#define LAN966X_BUFFER_CELL_SZ 64
#define LAN966X_BUFFER_MEMORY (160 * 1024)
@@ -35,6 +40,15 @@
struct lan966x_port;
+struct lan966x_frame_info {
+ u32 len;
+ u16 port; /* Bit mask */
+ u16 vid;
+ u32 timestamp;
+ u8 qos_class;
+ u8 ipv;
+};
+
struct lan966x {
struct device *dev;
@@ -44,17 +58,41 @@ struct lan966x {
void __iomem *regs[NUM_TARGETS];
int shared_queue_sz;
+
+ /* interrupts */
+ int xtr_irq;
+};
+
+struct lan966x_port_config {
+ phy_interface_t portmode;
+ phy_interface_t phy_mode;
+ int speed;
+ int duplex;
+ u32 pause;
};
struct lan966x_port {
+ struct net_device *dev;
struct lan966x *lan966x;
u8 chip_port;
u16 pvid;
+ struct phylink_config phylink_config;
+ struct lan966x_port_config config;
+ struct phylink *phylink;
+ struct phy *serdes;
+ struct fwnode_handle *fwnode;
+
void __iomem *regs;
};
+extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
+
+void lan966x_port_config_down(struct lan966x_port *port);
+void lan966x_port_config_up(struct lan966x_port *port);
+void lan966x_port_init(struct lan966x_port *port);
+
static inline void __iomem *lan_addr(void __iomem *base[],
int id, int tinst, int tcnt,
int gbase, int ginst,
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c b/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c
new file mode 100644
index 000000000000..23687492869f
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_phylink.c
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Copyright (C) 2020 Microchip Technology Inc. */
+
+#include <linux/module.h>
+#include <linux/phylink.h>
+#include <linux/device.h>
+#include <linux/netdevice.h>
+#include <linux/sfp.h>
+
+#include "lan966x_main.h"
+
+static void lan966x_phylink_validate(struct phylink_config *config,
+ unsigned long *supported,
+ struct phylink_link_state *state)
+{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask) = { 0, };
+
+ phylink_set_port_modes(mask);
+ phylink_set(mask, Autoneg);
+ phylink_set(mask, Pause);
+ phylink_set(mask, Asym_Pause);
+
+ switch (state->interface) {
+ case PHY_INTERFACE_MODE_NA:
+ case PHY_INTERFACE_MODE_GMII:
+ case PHY_INTERFACE_MODE_MII:
+ case PHY_INTERFACE_MODE_SGMII:
+ case PHY_INTERFACE_MODE_QSGMII:
+ phylink_set(mask, 10baseT_Half);
+ phylink_set(mask, 10baseT_Full);
+ phylink_set(mask, 100baseT_Half);
+ phylink_set(mask, 100baseT_Full);
+ phylink_set(mask, 1000baseT_Full);
+ phylink_set(mask, 1000baseX_Full);
+ break;
+ default:
+ bitmap_zero(supported, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ return;
+ }
+ bitmap_and(supported, supported, mask, __ETHTOOL_LINK_MODE_MASK_NBITS);
+ bitmap_and(state->advertising, state->advertising, mask,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+}
+
+static void lan966x_phylink_mac_config(struct phylink_config *config,
+ unsigned int mode,
+ const struct phylink_link_state *state)
+{
+}
+
+static void lan966x_phylink_mac_link_up(struct phylink_config *config,
+ struct phy_device *phy,
+ unsigned int mode,
+ phy_interface_t interface,
+ int speed, int duplex,
+ bool tx_pause, bool rx_pause)
+{
+ struct lan966x_port *port = netdev_priv(to_net_dev(config->dev));
+ struct lan966x_port_config *port_config = &port->config;
+
+ port_config->duplex = duplex;
+ port_config->speed = speed;
+ port_config->pause = 0;
+ port_config->pause |= tx_pause ? MLO_PAUSE_TX : 0;
+ port_config->pause |= rx_pause ? MLO_PAUSE_RX : 0;
+
+ lan966x_port_config_up(port);
+}
+
+static void lan966x_phylink_mac_link_down(struct phylink_config *config,
+ unsigned int mode,
+ phy_interface_t interface)
+{
+}
+
+static void lan966x_phylink_mac_link_state(struct phylink_config *config,
+ struct phylink_link_state *state)
+{
+}
+
+static void lan966x_phylink_mac_aneg_restart(struct phylink_config *config)
+{
+}
+
+const struct phylink_mac_ops lan966x_phylink_mac_ops = {
+ .validate = lan966x_phylink_validate,
+ .mac_pcs_get_state = lan966x_phylink_mac_link_state,
+ .mac_config = lan966x_phylink_mac_config,
+ .mac_an_restart = lan966x_phylink_mac_aneg_restart,
+ .mac_link_down = lan966x_phylink_mac_link_down,
+ .mac_link_up = lan966x_phylink_mac_link_up,
+};
diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_port.c b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c
new file mode 100644
index 000000000000..7d6a3c968bd3
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_port.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/netdevice.h>
+
+#include "lan966x_main.h"
+
+/* Watermark encode */
+#define MULTIPLIER_BIT BIT(8)
+static u32 lan966x_wm_enc(u32 value)
+{
+ value /= LAN966X_BUFFER_CELL_SZ;
+
+ if (value >= MULTIPLIER_BIT) {
+ value /= 16;
+ if (value >= MULTIPLIER_BIT)
+ value = (MULTIPLIER_BIT - 1);
+
+ value |= MULTIPLIER_BIT;
+ }
+
+ return value;
+}
+
+static void lan966x_port_link_down(struct lan966x_port *port)
+{
+ struct lan966x *lan966x = port->lan966x;
+ u32 val, delay = 0;
+
+ /* 0.5: Disable any AFI */
+ lan_rmw(AFI_PORT_CFG_FC_SKIP_TTI_INJ_SET(1) |
+ AFI_PORT_CFG_FRM_OUT_MAX_SET(0),
+ AFI_PORT_CFG_FC_SKIP_TTI_INJ |
+ AFI_PORT_CFG_FRM_OUT_MAX,
+ lan966x, AFI_PORT_CFG(port->chip_port));
+
+ /* wait for reg afi_port_frm_out to become 0 for the port */
+ while (true) {
+ val = lan_rd(lan966x, AFI_PORT_FRM_OUT(port->chip_port));
+ if (!AFI_PORT_FRM_OUT_FRM_OUT_CNT_GET(val))
+ break;
+
+ usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+ delay++;
+ if (delay == 2000) {
+ pr_err("AFI timeout chip port %u", port->chip_port);
+ break;
+ }
+ }
+
+ delay = 0;
+
+ /* 1: Reset the PCS Rx clock domain */
+ lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(1),
+ DEV_CLOCK_CFG_PCS_RX_RST,
+ lan966x, DEV_CLOCK_CFG(port->chip_port));
+
+ /* 2: Disable MAC frame reception */
+ lan_rmw(DEV_MAC_ENA_CFG_RX_ENA_SET(0),
+ DEV_MAC_ENA_CFG_RX_ENA,
+ lan966x, DEV_MAC_ENA_CFG(port->chip_port));
+
+ /* 3: Disable traffic being sent to or from switch port */
+ lan_rmw(QSYS_SW_PORT_MODE_PORT_ENA_SET(0),
+ QSYS_SW_PORT_MODE_PORT_ENA,
+ lan966x, QSYS_SW_PORT_MODE(port->chip_port));
+
+ /* 4: Disable dequeuing from the egress queues */
+ lan_rmw(QSYS_PORT_MODE_DEQUEUE_DIS_SET(1),
+ QSYS_PORT_MODE_DEQUEUE_DIS,
+ lan966x, QSYS_PORT_MODE(port->chip_port));
+
+ /* 5: Disable Flowcontrol */
+ lan_rmw(SYS_PAUSE_CFG_PAUSE_ENA_SET(0),
+ SYS_PAUSE_CFG_PAUSE_ENA,
+ lan966x, SYS_PAUSE_CFG(port->chip_port));
+
+ /* 5.1: Disable PFC */
+ lan_rmw(QSYS_SW_PORT_MODE_TX_PFC_ENA_SET(0),
+ QSYS_SW_PORT_MODE_TX_PFC_ENA,
+ lan966x, QSYS_SW_PORT_MODE(port->chip_port));
+
+ /* 6: Wait a worst case time 8ms (jumbo/10Mbit) */
+ usleep_range(8 * USEC_PER_MSEC, 9 * USEC_PER_MSEC);
+
+ /* 7: Disable HDX backpressure */
+ lan_rmw(SYS_FRONT_PORT_MODE_HDX_MODE_SET(0),
+ SYS_FRONT_PORT_MODE_HDX_MODE,
+ lan966x, SYS_FRONT_PORT_MODE(port->chip_port));
+
+ /* 8: Flush the queues accociated with the port */
+ lan_rmw(QSYS_SW_PORT_MODE_AGING_MODE_SET(3),
+ QSYS_SW_PORT_MODE_AGING_MODE,
+ lan966x, QSYS_SW_PORT_MODE(port->chip_port));
+
+ /* 9: Enable dequeuing from the egress queues */
+ lan_rmw(QSYS_PORT_MODE_DEQUEUE_DIS_SET(0),
+ QSYS_PORT_MODE_DEQUEUE_DIS,
+ lan966x, QSYS_PORT_MODE(port->chip_port));
+
+ /* 10: Wait until flushing is complete */
+ while (true) {
+ val = lan_rd(lan966x, QSYS_SW_STATUS(port->chip_port));
+ if (!QSYS_SW_STATUS_EQ_AVAIL_GET(val))
+ break;
+
+ usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+ delay++;
+ if (delay == 2000) {
+ pr_err("Flush timeout chip port %u", port->chip_port);
+ break;
+ }
+ }
+
+ /* 11: Reset the Port and MAC clock domains */
+ lan_rmw(DEV_MAC_ENA_CFG_TX_ENA_SET(0),
+ DEV_MAC_ENA_CFG_TX_ENA,
+ lan966x, DEV_MAC_ENA_CFG(port->chip_port)); /* Bugzilla#19076 */
+
+ lan_rmw(DEV_CLOCK_CFG_PORT_RST_SET(1),
+ DEV_CLOCK_CFG_PORT_RST,
+ lan966x, DEV_CLOCK_CFG(port->chip_port));
+
+ usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+
+ lan_rmw(DEV_CLOCK_CFG_MAC_TX_RST_SET(1) |
+ DEV_CLOCK_CFG_MAC_RX_RST_SET(1) |
+ DEV_CLOCK_CFG_PORT_RST_SET(1),
+ DEV_CLOCK_CFG_MAC_TX_RST |
+ DEV_CLOCK_CFG_MAC_RX_RST |
+ DEV_CLOCK_CFG_PORT_RST,
+ lan966x, DEV_CLOCK_CFG(port->chip_port));
+
+ /* 12: Clear flushing */
+ lan_rmw(QSYS_SW_PORT_MODE_AGING_MODE_SET(2),
+ QSYS_SW_PORT_MODE_AGING_MODE,
+ lan966x, QSYS_SW_PORT_MODE(port->chip_port));
+
+ /* The port is disabled and flushed, now set up the port in the
+ * new operating mode
+ */
+}
+
+static void lan966x_port_link_up(struct lan966x_port *port)
+{
+ struct lan966x_port_config *config = &port->config;
+ struct lan966x *lan966x = port->lan966x;
+ int speed = 0, mode = 0;
+ int atop_wm = 0;
+
+ switch (config->speed) {
+ case SPEED_10:
+ speed = LAN966X_SPEED_10;
+ break;
+ case SPEED_100:
+ speed = LAN966X_SPEED_100;
+ break;
+ case SPEED_1000:
+ speed = LAN966X_SPEED_1000;
+ mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA_SET(1);
+ break;
+ }
+
+ /* Also the GIGA_MODE_ENA(1) needs to be set regardless of the
+ * port speed for QSGMII ports.
+ */
+ if (config->phy_mode == PHY_INTERFACE_MODE_QSGMII)
+ mode = DEV_MAC_MODE_CFG_GIGA_MODE_ENA_SET(1);
+
+ lan_wr(config->duplex | mode,
+ lan966x, DEV_MAC_MODE_CFG(port->chip_port));
+
+ lan_rmw(DEV_MAC_IFG_CFG_TX_IFG_SET(5),
+ DEV_MAC_IFG_CFG_TX_IFG,
+ lan966x, DEV_MAC_IFG_CFG(port->chip_port));
+
+ lan_rmw(DEV_MAC_HDX_CFG_SEED_SET(4) |
+ DEV_MAC_HDX_CFG_SEED_LOAD_SET(1),
+ DEV_MAC_HDX_CFG_SEED |
+ DEV_MAC_HDX_CFG_SEED_LOAD,
+ lan966x, DEV_MAC_HDX_CFG(port->chip_port));
+
+ if (config->phy_mode != PHY_INTERFACE_MODE_QSGMII) {
+ if (config->speed == SPEED_1000)
+ lan_rmw(CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA_SET(1),
+ CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA,
+ lan966x,
+ CHIP_TOP_CUPHY_PORT_CFG(port->chip_port));
+ else
+ lan_rmw(CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA_SET(0),
+ CHIP_TOP_CUPHY_PORT_CFG_GTX_CLK_ENA,
+ lan966x,
+ CHIP_TOP_CUPHY_PORT_CFG(port->chip_port));
+ }
+
+ /* No PFC */
+ lan_wr(ANA_PFC_CFG_FC_LINK_SPEED_SET(speed),
+ lan966x, ANA_PFC_CFG(port->chip_port));
+
+ if (config->phy_mode == PHY_INTERFACE_MODE_QSGMII) {
+ lan_rmw(DEV_PCS1G_CFG_PCS_ENA_SET(1),
+ DEV_PCS1G_CFG_PCS_ENA,
+ lan966x, DEV_PCS1G_CFG(port->chip_port));
+
+ lan_rmw(DEV_PCS1G_SD_CFG_SD_ENA_SET(0),
+ DEV_PCS1G_SD_CFG_SD_ENA,
+ lan966x, DEV_PCS1G_SD_CFG(port->chip_port));
+ }
+
+ lan_rmw(DEV_PCS1G_CFG_PCS_ENA_SET(1),
+ DEV_PCS1G_CFG_PCS_ENA,
+ lan966x, DEV_PCS1G_CFG(port->chip_port));
+
+ lan_rmw(DEV_PCS1G_SD_CFG_SD_ENA_SET(0),
+ DEV_PCS1G_SD_CFG_SD_ENA,
+ lan966x, DEV_PCS1G_SD_CFG(port->chip_port));
+
+ /* Set Pause WM hysteresis, start/stop are in 1518 byte units */
+ lan_wr(SYS_PAUSE_CFG_PAUSE_ENA_SET(1) |
+ SYS_PAUSE_CFG_PAUSE_STOP_SET(lan966x_wm_enc(4 * 1518)) |
+ SYS_PAUSE_CFG_PAUSE_START_SET(lan966x_wm_enc(6 * 1518)),
+ lan966x, SYS_PAUSE_CFG(port->chip_port));
+
+ /* Set SMAC of Pause frame (00:00:00:00:00:00) */
+ lan_wr(0, lan966x, DEV_FC_MAC_LOW_CFG(port->chip_port));
+ lan_wr(0, lan966x, DEV_FC_MAC_HIGH_CFG(port->chip_port));
+
+ /* Flow control */
+ lan_rmw(SYS_MAC_FC_CFG_FC_LINK_SPEED_SET(speed) |
+ SYS_MAC_FC_CFG_FC_LATENCY_CFG_SET(7) |
+ SYS_MAC_FC_CFG_ZERO_PAUSE_ENA_SET(1) |
+ SYS_MAC_FC_CFG_PAUSE_VAL_CFG_SET(0xffff) |
+ SYS_MAC_FC_CFG_RX_FC_ENA_SET(config->pause & MLO_PAUSE_RX ? 1 : 0) |
+ SYS_MAC_FC_CFG_TX_FC_ENA_SET(config->pause & MLO_PAUSE_TX ? 1 : 0),
+ SYS_MAC_FC_CFG_FC_LINK_SPEED |
+ SYS_MAC_FC_CFG_FC_LATENCY_CFG |
+ SYS_MAC_FC_CFG_ZERO_PAUSE_ENA |
+ SYS_MAC_FC_CFG_PAUSE_VAL_CFG |
+ SYS_MAC_FC_CFG_RX_FC_ENA |
+ SYS_MAC_FC_CFG_TX_FC_ENA,
+ lan966x, SYS_MAC_FC_CFG(port->chip_port));
+
+ /* Tail dropping watermark */
+ atop_wm = lan966x->shared_queue_sz;
+
+ /* The total memory size is diveded by number of front ports plus CPU
+ * port
+ */
+ lan_wr(lan966x_wm_enc(atop_wm / lan966x->num_phys_ports + 1), lan966x,
+ SYS_ATOP(port->chip_port));
+ lan_wr(lan966x_wm_enc(atop_wm), lan966x, SYS_ATOP_TOT_CFG);
+
+ /* This needs to be at the end */
+ /* Enable MAC module */
+ lan_wr(DEV_MAC_ENA_CFG_RX_ENA_SET(1) |
+ DEV_MAC_ENA_CFG_TX_ENA_SET(1),
+ lan966x, DEV_MAC_ENA_CFG(port->chip_port));
+
+ /* Take out the clock from reset */
+ lan_wr(DEV_CLOCK_CFG_LINK_SPEED_SET(speed),
+ lan966x, DEV_CLOCK_CFG(port->chip_port));
+
+ /* Core: Enable port for frame transfer */
+ 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(port->chip_port));
+
+ lan_rmw(AFI_PORT_CFG_FC_SKIP_TTI_INJ_SET(0) |
+ AFI_PORT_CFG_FRM_OUT_MAX_SET(16),
+ AFI_PORT_CFG_FC_SKIP_TTI_INJ |
+ AFI_PORT_CFG_FRM_OUT_MAX,
+ lan966x, AFI_PORT_CFG(port->chip_port));
+}
+
+void lan966x_port_config_down(struct lan966x_port *port)
+{
+ lan966x_port_link_down(port);
+}
+
+void lan966x_port_config_up(struct lan966x_port *port)
+{
+ lan966x_port_link_down(port);
+ lan966x_port_link_up(port);
+}
+
+void lan966x_port_init(struct lan966x_port *port)
+{
+ struct lan966x_port_config *config = &port->config;
+ struct lan966x *lan966x = port->lan966x;
+
+ if (config->phy_mode != PHY_INTERFACE_MODE_QSGMII)
+ return;
+
+ lan_rmw(DEV_CLOCK_CFG_PCS_RX_RST_SET(0) |
+ DEV_CLOCK_CFG_PCS_TX_RST_SET(0) |
+ DEV_CLOCK_CFG_LINK_SPEED_SET(LAN966X_SPEED_1000),
+ DEV_CLOCK_CFG_PCS_RX_RST |
+ DEV_CLOCK_CFG_PCS_TX_RST |
+ DEV_CLOCK_CFG_LINK_SPEED,
+ lan966x, DEV_CLOCK_CFG(port->chip_port));
+}
--
2.31.1
