Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 238 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c b/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
new file mode 100644
index 000000000..34f954bbf
--- /dev/null
+++ b/drivers/net/ethernet/microchip/sparx5/sparx5_vlan.c
@@ -0,0 +1,238 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Microchip Sparx5 Switch driver
+ *
+ * Copyright (c) 2021 Microchip Technology Inc. and its subsidiaries.
+ */
+
+#include "sparx5_main_regs.h"
+#include "sparx5_main.h"
+
+static int sparx5_vlant_set_mask(struct sparx5 *sparx5, u16 vid)
+{
+	u32 mask[3];
+
+	/* Divide up mask in 32 bit words */
+	bitmap_to_arr32(mask, sparx5->vlan_mask[vid], SPX5_PORTS);
+
+	/* Output mask to respective registers */
+	spx5_wr(mask[0], sparx5, ANA_L3_VLAN_MASK_CFG(vid));
+	spx5_wr(mask[1], sparx5, ANA_L3_VLAN_MASK_CFG1(vid));
+	spx5_wr(mask[2], sparx5, ANA_L3_VLAN_MASK_CFG2(vid));
+
+	return 0;
+}
+
+void sparx5_vlan_init(struct sparx5 *sparx5)
+{
+	u16 vid;
+
+	spx5_rmw(ANA_L3_VLAN_CTRL_VLAN_ENA_SET(1),
+		 ANA_L3_VLAN_CTRL_VLAN_ENA,
+		 sparx5,
+		 ANA_L3_VLAN_CTRL);
+
+	/* Map VLAN = FID */
+	for (vid = NULL_VID; vid < VLAN_N_VID; vid++)
+		spx5_rmw(ANA_L3_VLAN_CFG_VLAN_FID_SET(vid),
+			 ANA_L3_VLAN_CFG_VLAN_FID,
+			 sparx5,
+			 ANA_L3_VLAN_CFG(vid));
+}
+
+void sparx5_vlan_port_setup(struct sparx5 *sparx5, int portno)
+{
+	struct sparx5_port *port = sparx5->ports[portno];
+
+	/* Configure PVID */
+	spx5_rmw(ANA_CL_VLAN_CTRL_VLAN_AWARE_ENA_SET(0) |
+		 ANA_CL_VLAN_CTRL_PORT_VID_SET(port->pvid),
+		 ANA_CL_VLAN_CTRL_VLAN_AWARE_ENA |
+		 ANA_CL_VLAN_CTRL_PORT_VID,
+		 sparx5,
+		 ANA_CL_VLAN_CTRL(port->portno));
+}
+
+int sparx5_vlan_vid_add(struct sparx5_port *port, u16 vid, bool pvid,
+			bool untagged)
+{
+	struct sparx5 *sparx5 = port->sparx5;
+	int ret;
+
+	/* Untagged egress vlan classification */
+	if (untagged && port->vid != vid) {
+		if (port->vid) {
+			netdev_err(port->ndev,
+				   "Port already has a native VLAN: %d\n",
+				   port->vid);
+			return -EBUSY;
+		}
+		port->vid = vid;
+	}
+
+	/* Make the port a member of the VLAN */
+	set_bit(port->portno, sparx5->vlan_mask[vid]);
+	ret = sparx5_vlant_set_mask(sparx5, vid);
+	if (ret)
+		return ret;
+
+	/* Default ingress vlan classification */
+	if (pvid)
+		port->pvid = vid;
+
+	sparx5_vlan_port_apply(sparx5, port);
+
+	return 0;
+}
+
+int sparx5_vlan_vid_del(struct sparx5_port *port, u16 vid)
+{
+	struct sparx5 *sparx5 = port->sparx5;
+	int ret;
+
+	/* 8021q removes VID 0 on module unload for all interfaces
+	 * with VLAN filtering feature. We need to keep it to receive
+	 * untagged traffic.
+	 */
+	if (vid == 0)
+		return 0;
+
+	/* Stop the port from being a member of the vlan */
+	clear_bit(port->portno, sparx5->vlan_mask[vid]);
+	ret = sparx5_vlant_set_mask(sparx5, vid);
+	if (ret)
+		return ret;
+
+	/* Ingress */
+	if (port->pvid == vid)
+		port->pvid = 0;
+
+	/* Egress */
+	if (port->vid == vid)
+		port->vid = 0;
+
+	sparx5_vlan_port_apply(sparx5, port);
+
+	return 0;
+}
+
+void sparx5_pgid_update_mask(struct sparx5_port *port, int pgid, bool enable)
+{
+	struct sparx5 *sparx5 = port->sparx5;
+	u32 val, mask;
+
+	/* mask is spread across 3 registers x 32 bit */
+	if (port->portno < 32) {
+		mask = BIT(port->portno);
+		val = enable ? mask : 0;
+		spx5_rmw(val, mask, sparx5, ANA_AC_PGID_CFG(pgid));
+	} else if (port->portno < 64) {
+		mask = BIT(port->portno - 32);
+		val = enable ? mask : 0;
+		spx5_rmw(val, mask, sparx5, ANA_AC_PGID_CFG1(pgid));
+	} else if (port->portno < SPX5_PORTS) {
+		mask = BIT(port->portno - 64);
+		val = enable ? mask : 0;
+		spx5_rmw(val, mask, sparx5, ANA_AC_PGID_CFG2(pgid));
+	} else {
+		netdev_err(port->ndev, "Invalid port no: %d\n", port->portno);
+	}
+}
+
+void sparx5_pgid_clear(struct sparx5 *spx5, int pgid)
+{
+	spx5_wr(0, spx5, ANA_AC_PGID_CFG(pgid));
+	spx5_wr(0, spx5, ANA_AC_PGID_CFG1(pgid));
+	spx5_wr(0, spx5, ANA_AC_PGID_CFG2(pgid));
+}
+
+void sparx5_pgid_read_mask(struct sparx5 *spx5, int pgid, u32 portmask[3])
+{
+	portmask[0] = spx5_rd(spx5, ANA_AC_PGID_CFG(pgid));
+	portmask[1] = spx5_rd(spx5, ANA_AC_PGID_CFG1(pgid));
+	portmask[2] = spx5_rd(spx5, ANA_AC_PGID_CFG2(pgid));
+}
+
+void sparx5_update_fwd(struct sparx5 *sparx5)
+{
+	DECLARE_BITMAP(workmask, SPX5_PORTS);
+	u32 mask[3];
+	int port;
+
+	/* Divide up fwd mask in 32 bit words */
+	bitmap_to_arr32(mask, sparx5->bridge_fwd_mask, SPX5_PORTS);
+
+	/* Update flood masks */
+	for (port = PGID_UC_FLOOD; port <= PGID_BCAST; port++) {
+		spx5_wr(mask[0], sparx5, ANA_AC_PGID_CFG(port));
+		spx5_wr(mask[1], sparx5, ANA_AC_PGID_CFG1(port));
+		spx5_wr(mask[2], sparx5, ANA_AC_PGID_CFG2(port));
+	}
+
+	/* Update SRC masks */
+	for (port = 0; port < SPX5_PORTS; port++) {
+		if (test_bit(port, sparx5->bridge_fwd_mask)) {
+			/* Allow to send to all bridged but self */
+			bitmap_copy(workmask, sparx5->bridge_fwd_mask, SPX5_PORTS);
+			clear_bit(port, workmask);
+			bitmap_to_arr32(mask, workmask, SPX5_PORTS);
+			spx5_wr(mask[0], sparx5, ANA_AC_SRC_CFG(port));
+			spx5_wr(mask[1], sparx5, ANA_AC_SRC_CFG1(port));
+			spx5_wr(mask[2], sparx5, ANA_AC_SRC_CFG2(port));
+		} else {
+			spx5_wr(0, sparx5, ANA_AC_SRC_CFG(port));
+			spx5_wr(0, sparx5, ANA_AC_SRC_CFG1(port));
+			spx5_wr(0, sparx5, ANA_AC_SRC_CFG2(port));
+		}
+	}
+
+	/* Learning enabled only for bridged ports */
+	bitmap_and(workmask, sparx5->bridge_fwd_mask,
+		   sparx5->bridge_lrn_mask, SPX5_PORTS);
+	bitmap_to_arr32(mask, workmask, SPX5_PORTS);
+
+	/* Apply learning mask */
+	spx5_wr(mask[0], sparx5, ANA_L2_AUTO_LRN_CFG);
+	spx5_wr(mask[1], sparx5, ANA_L2_AUTO_LRN_CFG1);
+	spx5_wr(mask[2], sparx5, ANA_L2_AUTO_LRN_CFG2);
+}
+
+void sparx5_vlan_port_apply(struct sparx5 *sparx5,
+			    struct sparx5_port *port)
+
+{
+	u32 val;
+
+	/* Configure PVID, vlan aware */
+	val = ANA_CL_VLAN_CTRL_VLAN_AWARE_ENA_SET(port->vlan_aware) |
+		ANA_CL_VLAN_CTRL_VLAN_POP_CNT_SET(port->vlan_aware) |
+		ANA_CL_VLAN_CTRL_PORT_VID_SET(port->pvid);
+	spx5_wr(val, sparx5, ANA_CL_VLAN_CTRL(port->portno));
+
+	val = 0;
+	if (port->vlan_aware && !port->pvid)
+		/* If port is vlan-aware and tagged, drop untagged and
+		 * priority tagged frames.
+		 */
+		val = ANA_CL_VLAN_FILTER_CTRL_TAG_REQUIRED_ENA_SET(1) |
+			ANA_CL_VLAN_FILTER_CTRL_PRIO_CTAG_DIS_SET(1) |
+			ANA_CL_VLAN_FILTER_CTRL_PRIO_STAG_DIS_SET(1);
+	spx5_wr(val, sparx5,
+		ANA_CL_VLAN_FILTER_CTRL(port->portno, 0));
+
+	/* Egress configuration (REW_TAG_CFG): VLAN tag type to 8021Q */
+	val = REW_TAG_CTRL_TAG_TPID_CFG_SET(0);
+	if (port->vlan_aware) {
+		if (port->vid)
+			/* Tag all frames except when VID == DEFAULT_VLAN */
+			val |= REW_TAG_CTRL_TAG_CFG_SET(1);
+		else
+			val |= REW_TAG_CTRL_TAG_CFG_SET(3);
+	}
+	spx5_wr(val, sparx5, REW_TAG_CTRL(port->portno));
+
+	/* Egress VID */
+	spx5_rmw(REW_PORT_VLAN_CFG_PORT_VID_SET(port->vid),
+		 REW_PORT_VLAN_CFG_PORT_VID,
+		 sparx5,
+		 REW_PORT_VLAN_CFG(port->portno));
+}