After using ethtool to enable and configure frame preemption on
vsc9959, use tc-taprio preempt set to mark the preempt queues and
express queueus.
Signed-off-by: Xiaoliang Yang <xiaoliang.yan...@nxp.com>
---
drivers/net/dsa/ocelot/felix_vsc9959.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c
b/drivers/net/dsa/ocelot/felix_vsc9959.c
index c0e41d499639..f2b9a5ee1ff5 100644
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1310,6 +1310,20 @@ static int vsc9959_qos_port_cbs_set(struct dsa_switch
*ds, int port,
return 0;
}
+static int vsc9959_port_preempt_queues(struct ocelot *ocelot, int port,
+ struct tc_preempt_qopt_offload *qopt)
+{
+ u8 p_queues = qopt->preemptible_queues;
+
+ ocelot_rmw_rix(ocelot,
+ QSYS_PREEMPTION_CFG_P_QUEUES(p_queues),
+ QSYS_PREEMPTION_CFG_P_QUEUES_M,
+ QSYS_PREEMPTION_CFG,
+ port);
+
+ return 0;
+}
+
static int vsc9959_port_setup_tc(struct dsa_switch *ds, int port,
enum tc_setup_type type,
void *type_data)
@@ -1321,6 +1335,8 @@ static int vsc9959_port_setup_tc(struct dsa_switch *ds,
int port,
return vsc9959_qos_port_tas_set(ocelot, port, type_data);
case TC_SETUP_QDISC_CBS:
return vsc9959_qos_port_cbs_set(ds, port, type_data);
+ case TC_SETUP_PREEMPT:
+ return vsc9959_port_preempt_queues(ocelot, port, type_data);
default:
return -EOPNOTSUPP;
}
--
2.18.4
