This is a note to let you know that I've just added the patch titled net: dsa: felix: keep reference on entire tc-taprio config to the 5.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-dsa-felix-keep-reference-on-entire-tc-taprio-con.patch and it can be found in the queue-5.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 4519b95bc61bd5318a9869feea59510b25e3bd1c Author: Vladimir Oltean <vladimir.oltean@xxxxxxx> Date: Tue Jun 28 17:52:35 2022 +0300 net: dsa: felix: keep reference on entire tc-taprio config [ Upstream commit 1c9017e44af2eee94b1001af18c401ae440ad77c ] 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@xxxxxxx> Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/net/dsa/ocelot/felix_vsc9959.c b/drivers/net/dsa/ocelot/felix_vsc9959.c index 693cd6ffbace..12792362bbee 100644 --- 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 @@ static int vsc9959_qos_port_tas_set(struct ocelot *ocelot, int port, 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 3737570116c3..ac151ecc7f19 100644 --- 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 {