net: dsa: felix: keep reference on entire tc-taprio config

In a future change we will need to remember the entire tc-taprio config
on all ports rather than just the base time, so use the
taprio_offload_get() helper function to replace ocelot_port->base_time
with ocelot_port->taprio.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c
index 693cd6f..1279236 100644 (file)
--- a/drivers/net/dsa/ocelot/felix_vsc9959.c
+++ b/drivers/net/dsa/ocelot/felix_vsc9959.c
@@ -1210,6 +1210,9 @@ static int vsc9959_qos_port_tas_set(struct ocelot *ocelot, int port,
                               QSYS_TAG_CONFIG_INIT_GATE_STATE_M,
                               QSYS_TAG_CONFIG, port);
 
+               taprio_offload_free(ocelot_port->taprio);
+               ocelot_port->taprio = NULL;
+
                mutex_unlock(&ocelot->tas_lock);
                return 0;
        }
@@ -1258,8 +1261,6 @@ static int vsc9959_qos_port_tas_set(struct ocelot *ocelot, int port,
                       QSYS_TAG_CONFIG_SCH_TRAFFIC_QUEUES_M,
                       QSYS_TAG_CONFIG, port);
 
-       ocelot_port->base_time = taprio->base_time;
-
        vsc9959_new_base_time(ocelot, taprio->base_time,
                              taprio->cycle_time, &base_ts);
        ocelot_write(ocelot, base_ts.tv_nsec, QSYS_PARAM_CFG_REG_1);
@@ -1282,6 +1283,10 @@ static int vsc9959_qos_port_tas_set(struct ocelot *ocelot, int port,
        ret = readx_poll_timeout(vsc9959_tas_read_cfg_status, ocelot, val,
                                 !(val & QSYS_TAS_PARAM_CFG_CTRL_CONFIG_CHANGE),
                                 10, 100000);
+       if (ret)
+               goto err;
+
+       ocelot_port->taprio = taprio_offload_get(taprio);
 
 err:
        mutex_unlock(&ocelot->tas_lock);
@@ -1291,17 +1296,18 @@ err:
 
 static void vsc9959_tas_clock_adjust(struct ocelot *ocelot)
 {
+       struct tc_taprio_qopt_offload *taprio;
        struct ocelot_port *ocelot_port;
        struct timespec64 base_ts;
-       u64 cycletime;
        int port;
        u32 val;
 
        mutex_lock(&ocelot->tas_lock);
 
        for (port = 0; port < ocelot->num_phys_ports; port++) {
-               val = ocelot_read_rix(ocelot, QSYS_TAG_CONFIG, port);
-               if (!(val & QSYS_TAG_CONFIG_ENABLE))
+               ocelot_port = ocelot->ports[port];
+               taprio = ocelot_port->taprio;
+               if (!taprio)
                        continue;
 
                ocelot_rmw(ocelot,
@@ -1315,11 +1321,8 @@ static void vsc9959_tas_clock_adjust(struct ocelot *ocelot)
                               QSYS_TAG_CONFIG_INIT_GATE_STATE_M,
                               QSYS_TAG_CONFIG, port);
 
-               cycletime = ocelot_read(ocelot, QSYS_PARAM_CFG_REG_4);
-               ocelot_port = ocelot->ports[port];
-
-               vsc9959_new_base_time(ocelot, ocelot_port->base_time,
-                                     cycletime, &base_ts);
+               vsc9959_new_base_time(ocelot, taprio->base_time,
+                                     taprio->cycle_time, &base_ts);
 
                ocelot_write(ocelot, base_ts.tv_nsec, QSYS_PARAM_CFG_REG_1);
                ocelot_write(ocelot, lower_32_bits(base_ts.tv_sec),

diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 3737570..ac151ec 100644 (file)
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -670,6 +670,8 @@ struct ocelot_port {
        /* VLAN that untagged frames are classified to, on ingress */
        const struct ocelot_bridge_vlan *pvid_vlan;
 
+       struct tc_taprio_qopt_offload   *taprio;
+
        phy_interface_t                 phy_mode;
 
        unsigned int                    ptp_skbs_in_flight;
@@ -692,9 +694,6 @@ struct ocelot_port {
        int                             bridge_num;
 
        int                             speed;
-
-       /* Store the AdminBaseTime of EST fetched from userspace. */
-       s64                             base_time;
 };
 
 struct ocelot {