octeontx2-af: Support to enable/disable HW timestamping

Four new mbox messages ids and handler are added in order to
enable or disable timestamping procedure on tx and rx side.
Additionally when PTP is enabled, the packet parser must skip
over 8 bytes and start analyzing packet data there. To make NPC
profiles work seemlesly PTR_ADVANCE of IKPU is set so that
parsing can be done as before when all data pointers
are shifted by 8 bytes automatically.

Co-developed-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Zyta Szpak <zyta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
index f3c82e489897..fe3389c144b5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cgx.c
@@ -509,6 +509,45 @@ int rvu_mbox_handler_cgx_promisc_disable(struct rvu *rvu, struct msg_req *req,
 	return 0;
 }
 
+static int rvu_cgx_ptp_rx_cfg(struct rvu *rvu, u16 pcifunc, bool enable)
+{
+	int pf = rvu_get_pf(pcifunc);
+	u8 cgx_id, lmac_id;
+	void *cgxd;
+
+	/* This msg is expected only from PFs that are mapped to CGX LMACs,
+	 * if received from other PF/VF simply ACK, nothing to do.
+	 */
+	if ((pcifunc & RVU_PFVF_FUNC_MASK) ||
+	    !is_pf_cgxmapped(rvu, pf))
+		return -ENODEV;
+
+	rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, &lmac_id);
+	cgxd = rvu_cgx_pdata(cgx_id, rvu);
+
+	cgx_lmac_ptp_config(cgxd, lmac_id, enable);
+	/* If PTP is enabled then inform NPC that packets to be
+	 * parsed by this PF will have their data shifted by 8 bytes
+	 * and if PTP is disabled then no shift is required
+	 */
+	if (npc_config_ts_kpuaction(rvu, pf, pcifunc, enable))
+		return -EINVAL;
+
+	return 0;
+}
+
+int rvu_mbox_handler_cgx_ptp_rx_enable(struct rvu *rvu, struct msg_req *req,
+				       struct msg_rsp *rsp)
+{
+	return rvu_cgx_ptp_rx_cfg(rvu, req->hdr.pcifunc, true);
+}
+
+int rvu_mbox_handler_cgx_ptp_rx_disable(struct rvu *rvu, struct msg_req *req,
+					struct msg_rsp *rsp)
+{
+	return rvu_cgx_ptp_rx_cfg(rvu, req->hdr.pcifunc, false);
+}
+
 static int rvu_cgx_config_linkevents(struct rvu *rvu, u16 pcifunc, bool en)
 {
 	int pf = rvu_get_pf(pcifunc);