@@ -36,6 +36,7 @@ struct sja1105_regs {
u64 status;
u64 port_control;
u64 rgu;
+ u64 vl_status;
u64 config;
u64 sgmii;
u64 rmii_pll1;
@@ -156,8 +157,16 @@ struct sja1105_rule {
/* SJA1105_RULE_VL */
struct {
- unsigned long destports;
enum sja1105_vl_type type;
+ unsigned long destports;
+ int sharindx;
+ int maxlen;
+ int ipv;
+ u64 base_time;
+ u64 cycle_time;
+ int num_entries;
+ struct action_gate_entry *entries;
+ struct flow_stats stats;
} vl;
};
};
@@ -304,6 +313,8 @@ int sja1105_cls_flower_del(struct dsa_switch *ds, int port,
struct flow_cls_offload *cls, bool ingress);
int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
struct flow_cls_offload *cls, bool ingress);
+int sja1105_cls_flower_stats(struct dsa_switch *ds, int port,
+ struct flow_cls_offload *cls, bool ingress);
void sja1105_flower_setup(struct dsa_switch *ds);
void sja1105_flower_teardown(struct dsa_switch *ds);
struct sja1105_rule *sja1105_rule_find(struct sja1105_private *priv,
@@ -309,7 +309,9 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
struct sja1105_private *priv = ds->priv;
const struct flow_action_entry *act;
unsigned long cookie = cls->cookie;
+ bool routing_rule = false;
struct sja1105_key key;
+ bool gate_rule = false;
bool vl_rule = false;
int rc, i;
@@ -332,6 +334,7 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
case FLOW_ACTION_TRAP: {
int cpu = dsa_upstream_port(ds, port);
+ routing_rule = true;
vl_rule = true;
rc = sja1105_vl_redirect(priv, port, extack, cookie,
@@ -350,6 +353,7 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
}
to_dp = dsa_slave_to_port(act->dev);
+ routing_rule = true;
vl_rule = true;
rc = sja1105_vl_redirect(priv, port, extack, cookie,
@@ -366,6 +370,21 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
if (rc)
goto out;
break;
+ case FLOW_ACTION_GATE:
+ gate_rule = true;
+ vl_rule = true;
+
+ rc = sja1105_vl_gate(priv, port, extack, cookie,
+ &key, act->gate.index,
+ act->gate.prio,
+ act->gate.basetime,
+ act->gate.cycletime,
+ act->gate.cycletimeext,
+ act->gate.num_entries,
+ act->gate.entries);
+ if (rc)
+ goto out;
+ break;
default:
NL_SET_ERR_MSG_MOD(extack,
"Action not supported");
@@ -374,8 +393,23 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
}
}
- if (vl_rule && !rc)
+ if (vl_rule && !rc) {
+ /* Delay scheduling configuration until DESTPORTS has been
+ * populated by all other actions.
+ */
+ if (gate_rule) {
+ if (!routing_rule) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Can only offload gate action together with redirect or trap");
+ return -EOPNOTSUPP;
+ }
+ rc = sja1105_init_scheduling(priv);
+ if (rc)
+ goto out;
+ }
+
rc = sja1105_static_config_reload(priv, SJA1105_VIRTUAL_LINKS);
+ }
out:
return rc;
@@ -421,6 +455,27 @@ int sja1105_cls_flower_del(struct dsa_switch *ds, int port,
return sja1105_static_config_reload(priv, SJA1105_BEST_EFFORT_POLICING);
}
+int sja1105_cls_flower_stats(struct dsa_switch *ds, int port,
+ struct flow_cls_offload *cls, bool ingress)
+{
+ struct sja1105_private *priv = ds->priv;
+ struct sja1105_rule *rule = sja1105_rule_find(priv, cls->cookie);
+ int rc;
+
+ if (!rule)
+ return 0;
+
+ if (rule->type != SJA1105_RULE_VL)
+ return 0;
+
+ rc = sja1105_vl_stats(priv, port, rule, &cls->stats,
+ cls->common.extack);
+ if (rc)
+ return rc;
+
+ return 0;
+}
+
void sja1105_flower_setup(struct dsa_switch *ds)
{
struct sja1105_private *priv = ds->priv;
@@ -2369,6 +2369,7 @@ static const struct dsa_switch_ops sja1105_switch_ops = {
.port_policer_del = sja1105_port_policer_del,
.cls_flower_add = sja1105_cls_flower_add,
.cls_flower_del = sja1105_cls_flower_del,
+ .cls_flower_stats = sja1105_cls_flower_stats,
};
static int sja1105_check_device_id(struct sja1105_private *priv)
@@ -48,6 +48,19 @@ static inline s64 future_base_time(s64 base_time, s64 cycle_time, s64 now)
return base_time + n * cycle_time;
}
+/* This is not a preprocessor macro because the "ns" argument may or may not be
+ * s64 at caller side. This ensures it is properly type-cast before div_s64.
+ */
+static inline s64 ns_to_sja1105_delta(s64 ns)
+{
+ return div_s64(ns, 200);
+}
+
+static inline s64 sja1105_delta_to_ns(s64 delta)
+{
+ return delta * 200;
+}
+
struct sja1105_ptp_cmd {
u64 startptpcp; /* start toggling PTP_CLK pin */
u64 stopptpcp; /* stop toggling PTP_CLK pin */
@@ -439,6 +439,7 @@ static struct sja1105_regs sja1105et_regs = {
.prod_id = 0x100BC3,
.status = 0x1,
.port_control = 0x11,
+ .vl_status = 0x10000,
.config = 0x020000,
.rgu = 0x100440,
/* UM10944.pdf, Table 86, ACU Register overview */
@@ -472,6 +473,7 @@ static struct sja1105_regs sja1105pqrs_regs = {
.prod_id = 0x100BC3,
.status = 0x1,
.port_control = 0x12,
+ .vl_status = 0x10000,
.config = 0x020000,
.rgu = 0x100440,
/* UM10944.pdf, Table 86, ACU Register overview */
@@ -302,6 +302,8 @@ struct sja1105_vl_lookup_entry {
u64 vlid;
};
};
+ /* Not part of hardware structure */
+ unsigned long flow_cookie;
};
struct sja1105_vl_policing_entry {
@@ -7,7 +7,6 @@
#define SJA1105_TAS_CLKSRC_STANDALONE 1
#define SJA1105_TAS_CLKSRC_AS6802 2
#define SJA1105_TAS_CLKSRC_PTP 3
-#define SJA1105_TAS_MAX_DELTA BIT(19)
#define SJA1105_GATE_MASK GENMASK_ULL(SJA1105_NUM_TC - 1, 0)
#define work_to_sja1105_tas(d) \
@@ -15,22 +14,10 @@
#define tas_to_sja1105(d) \
container_of((d), struct sja1105_private, tas_data)
-/* This is not a preprocessor macro because the "ns" argument may or may not be
- * s64 at caller side. This ensures it is properly type-cast before div_s64.
- */
-static s64 ns_to_sja1105_delta(s64 ns)
-{
- return div_s64(ns, 200);
-}
-
-static s64 sja1105_delta_to_ns(s64 delta)
-{
- return delta * 200;
-}
-
static int sja1105_tas_set_runtime_params(struct sja1105_private *priv)
{
struct sja1105_tas_data *tas_data = &priv->tas_data;
+ struct sja1105_gating_config *gating_cfg = &tas_data->gating_cfg;
struct dsa_switch *ds = priv->ds;
s64 earliest_base_time = S64_MAX;
s64 latest_base_time = 0;
@@ -59,6 +46,19 @@ static int sja1105_tas_set_runtime_params(struct sja1105_private *priv)
}
}
+ if (!list_empty(&gating_cfg->entries)) {
+ tas_data->enabled = true;
+
+ if (max_cycle_time < gating_cfg->cycle_time)
+ max_cycle_time = gating_cfg->cycle_time;
+ if (latest_base_time < gating_cfg->base_time)
+ latest_base_time = gating_cfg->base_time;
+ if (earliest_base_time > gating_cfg->base_time) {
+ earliest_base_time = gating_cfg->base_time;
+ its_cycle_time = gating_cfg->cycle_time;
+ }
+ }
+
if (!tas_data->enabled)
return 0;
@@ -155,13 +155,14 @@ static int sja1105_tas_set_runtime_params(struct sja1105_private *priv)
* their "subschedule end index" (subscheind) equal to the last valid
* subschedule's end index (in this case 5).
*/
-static int sja1105_init_scheduling(struct sja1105_private *priv)
+int sja1105_init_scheduling(struct sja1105_private *priv)
{
struct sja1105_schedule_entry_points_entry *schedule_entry_points;
struct sja1105_schedule_entry_points_params_entry
*schedule_entry_points_params;
struct sja1105_schedule_params_entry *schedule_params;
struct sja1105_tas_data *tas_data = &priv->tas_data;
+ struct sja1105_gating_config *gating_cfg = &tas_data->gating_cfg;
struct sja1105_schedule_entry *schedule;
struct sja1105_table *table;
int schedule_start_idx;
@@ -213,6 +214,11 @@ static int sja1105_init_scheduling(struct sja1105_private *priv)
}
}
+ if (!list_empty(&gating_cfg->entries)) {
+ num_entries += gating_cfg->num_entries;
+ num_cycles++;
+ }
+
/* Nothing to do */
if (!num_cycles)
return 0;
@@ -312,6 +318,42 @@ static int sja1105_init_scheduling(struct sja1105_private *priv)
cycle++;
}
+ if (!list_empty(&gating_cfg->entries)) {
+ struct sja1105_gate_entry *e;
+
+ /* Relative base time */
+ s64 rbt;
+
+ schedule_start_idx = k;
+ schedule_end_idx = k + gating_cfg->num_entries - 1;
+ rbt = future_base_time(gating_cfg->base_time,
+ gating_cfg->cycle_time,
+ tas_data->earliest_base_time);
+ rbt -= tas_data->earliest_base_time;
+ entry_point_delta = ns_to_sja1105_delta(rbt) + 1;
+
+ schedule_entry_points[cycle].subschindx = cycle;
+ schedule_entry_points[cycle].delta = entry_point_delta;
+ schedule_entry_points[cycle].address = schedule_start_idx;
+
+ for (i = cycle; i < 8; i++)
+ schedule_params->subscheind[i] = schedule_end_idx;
+
+ list_for_each_entry(e, &gating_cfg->entries, list) {
+ schedule[k].delta = ns_to_sja1105_delta(e->interval);
+ schedule[k].destports = e->rule->vl.destports;
+ schedule[k].setvalid = true;
+ schedule[k].txen = true;
+ schedule[k].vlindex = e->rule->vl.sharindx;
+ schedule[k].winstindex = e->rule->vl.sharindx;
+ if (e->gate_state) /* Gate open */
+ schedule[k].winst = true;
+ else /* Gate closed */
+ schedule[k].winend = true;
+ k++;
+ }
+ }
+
return 0;
}
@@ -415,6 +457,54 @@ sja1105_tas_check_conflicts(struct sja1105_private *priv, int port,
return false;
}
+/* Check the tc-taprio configuration on @port for conflicts with the tc-gate
+ * global subschedule. If @port is -1, check it against all ports.
+ * To reuse the sja1105_tas_check_conflicts logic without refactoring it,
+ * convert the gating configuration to a dummy tc-taprio offload structure.
+ */
+bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
+ struct netlink_ext_ack *extack)
+{
+ struct sja1105_gating_config *gating_cfg = &priv->tas_data.gating_cfg;
+ size_t num_entries = gating_cfg->num_entries;
+ struct tc_taprio_qopt_offload *dummy;
+ struct sja1105_gate_entry *e;
+ bool conflict;
+ int i = 0;
+
+ if (list_empty(&gating_cfg->entries))
+ return false;
+
+ dummy = kzalloc(sizeof(struct tc_taprio_sched_entry) * num_entries +
+ sizeof(struct tc_taprio_qopt_offload), GFP_KERNEL);
+ if (!dummy) {
+ NL_SET_ERR_MSG_MOD(extack, "Failed to allocate memory");
+ return true;
+ }
+
+ dummy->num_entries = num_entries;
+ dummy->base_time = gating_cfg->base_time;
+ dummy->cycle_time = gating_cfg->cycle_time;
+
+ list_for_each_entry(e, &gating_cfg->entries, list)
+ dummy->entries[i++].interval = e->interval;
+
+ if (port != -1) {
+ conflict = sja1105_tas_check_conflicts(priv, port, dummy);
+ } else {
+ for (port = 0; port < SJA1105_NUM_PORTS; port++) {
+ conflict = sja1105_tas_check_conflicts(priv, port,
+ dummy);
+ if (conflict)
+ break;
+ }
+ }
+
+ kfree(dummy);
+
+ return conflict;
+}
+
int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
struct tc_taprio_qopt_offload *admin)
{
@@ -473,6 +563,11 @@ int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
return -ERANGE;
}
+ if (sja1105_gating_check_conflicts(priv, port, NULL)) {
+ dev_err(ds->dev, "Conflict with tc-gate schedule\n");
+ return -ERANGE;
+ }
+
tas_data->offload[port] = taprio_offload_get(admin);
rc = sja1105_init_scheduling(priv);
@@ -779,6 +874,8 @@ void sja1105_tas_setup(struct dsa_switch *ds)
INIT_WORK(&tas_data->tas_work, sja1105_tas_state_machine);
tas_data->state = SJA1105_TAS_STATE_DISABLED;
tas_data->last_op = SJA1105_PTP_NONE;
+
+ INIT_LIST_HEAD(&tas_data->gating_cfg.entries);
}
void sja1105_tas_teardown(struct dsa_switch *ds)
@@ -6,6 +6,8 @@
#include <net/pkt_sched.h>
+#define SJA1105_TAS_MAX_DELTA BIT(18)
+
#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
enum sja1105_tas_state {
@@ -20,8 +22,23 @@ enum sja1105_ptp_op {
SJA1105_PTP_ADJUSTFREQ,
};
+struct sja1105_gate_entry {
+ struct list_head list;
+ struct sja1105_rule *rule;
+ s64 interval;
+ u8 gate_state;
+};
+
+struct sja1105_gating_config {
+ u64 cycle_time;
+ s64 base_time;
+ int num_entries;
+ struct list_head entries;
+};
+
struct sja1105_tas_data {
struct tc_taprio_qopt_offload *offload[SJA1105_NUM_PORTS];
+ struct sja1105_gating_config gating_cfg;
enum sja1105_tas_state state;
enum sja1105_ptp_op last_op;
struct work_struct tas_work;
@@ -31,6 +48,8 @@ struct sja1105_tas_data {
bool enabled;
};
+struct sja1105_private;
+
int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
struct tc_taprio_qopt_offload *admin);
@@ -42,6 +61,11 @@ void sja1105_tas_clockstep(struct dsa_switch *ds);
void sja1105_tas_adjfreq(struct dsa_switch *ds);
+bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
+ struct netlink_ext_ack *extack);
+
+int sja1105_init_scheduling(struct sja1105_private *priv);
+
#else
/* C doesn't allow empty structures, bah! */
@@ -63,6 +87,13 @@ static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
+static inline bool
+sja1105_gating_check_conflicts(struct dsa_switch *ds, int port,
+ struct netlink_ext_ack *extack)
+{
+ return true;
+}
+
#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */
#endif /* _SJA1105_TAS_H */
@@ -1,9 +1,13 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright 2020, NXP Semiconductors
*/
+#include <net/tc_act/tc_gate.h>
#include <linux/dsa/8021q.h>
#include "sja1105.h"
+#define SJA1105_VL_FRAME_MEMORY 100
+#define SJA1105_SIZE_VL_STATUS 8
+
/* The switch flow classification core implements TTEthernet, which 'thinks' in
* terms of Virtual Links (VL), a concept borrowed from ARINC 664 part 7.
* However it also has one other operating mode (VLLUPFORMAT=0) where it acts
@@ -137,18 +141,33 @@ static bool sja1105_vl_key_lower(struct sja1105_vl_lookup_entry *a,
static int sja1105_init_virtual_links(struct sja1105_private *priv,
struct netlink_ext_ack *extack)
{
+ struct sja1105_l2_forwarding_params_entry *l2_fwd_params;
+ struct sja1105_vl_forwarding_params_entry *vl_fwd_params;
+ struct sja1105_vl_policing_entry *vl_policing;
+ struct sja1105_vl_forwarding_entry *vl_fwd;
struct sja1105_vl_lookup_entry *vl_lookup;
+ bool have_critical_virtual_links = false;
struct sja1105_table *table;
struct sja1105_rule *rule;
int num_virtual_links = 0;
+ int max_sharindx = 0;
int i, j, k;
+ table = &priv->static_config.tables[BLK_IDX_L2_FORWARDING_PARAMS];
+ l2_fwd_params = table->entries;
+ l2_fwd_params->part_spc[0] = SJA1105_MAX_FRAME_MEMORY;
+
/* Figure out the dimensioning of the problem */
list_for_each_entry(rule, &priv->flow_block.rules, list) {
if (rule->type != SJA1105_RULE_VL)
continue;
/* Each VL lookup entry matches on a single ingress port */
num_virtual_links += hweight_long(rule->port_mask);
+
+ if (rule->vl.type != SJA1105_VL_NONCRITICAL)
+ have_critical_virtual_links = true;
+ if (max_sharindx < rule->vl.sharindx)
+ max_sharindx = rule->vl.sharindx;
}
if (num_virtual_links > SJA1105_MAX_VL_LOOKUP_COUNT) {
@@ -156,6 +175,13 @@ static int sja1105_init_virtual_links(struct sja1105_private *priv,
return -ENOSPC;
}
+ if (max_sharindx + 1 > SJA1105_MAX_VL_LOOKUP_COUNT) {
+ NL_SET_ERR_MSG_MOD(extack, "Policer index out of range");
+ return -ENOSPC;
+ }
+
+ max_sharindx = max_t(int, num_virtual_links, max_sharindx) + 1;
+
/* Discard previous VL Lookup Table */
table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP];
if (table->entry_count) {
@@ -163,6 +189,27 @@ static int sja1105_init_virtual_links(struct sja1105_private *priv,
table->entry_count = 0;
}
+ /* Discard previous VL Policing Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_POLICING];
+ if (table->entry_count) {
+ kfree(table->entries);
+ table->entry_count = 0;
+ }
+
+ /* Discard previous VL Forwarding Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING];
+ if (table->entry_count) {
+ kfree(table->entries);
+ table->entry_count = 0;
+ }
+
+ /* Discard previous VL Forwarding Parameters Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS];
+ if (table->entry_count) {
+ kfree(table->entries);
+ table->entry_count = 0;
+ }
+
/* Nothing to do */
if (!num_virtual_links)
return 0;
@@ -208,6 +255,7 @@ static int sja1105_init_virtual_links(struct sja1105_private *priv,
vl_lookup[k].destports = rule->vl.destports;
else
vl_lookup[k].iscritical = true;
+ vl_lookup[k].flow_cookie = rule->cookie;
k++;
}
}
@@ -232,6 +280,68 @@ static int sja1105_init_virtual_links(struct sja1105_private *priv,
}
}
+ if (!have_critical_virtual_links)
+ return 0;
+
+ /* VL Policing Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_POLICING];
+ table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size,
+ GFP_KERNEL);
+ if (!table->entries)
+ return -ENOMEM;
+ table->entry_count = max_sharindx;
+ vl_policing = table->entries;
+
+ /* VL Forwarding Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING];
+ table->entries = kcalloc(max_sharindx, table->ops->unpacked_entry_size,
+ GFP_KERNEL);
+ if (!table->entries)
+ return -ENOMEM;
+ table->entry_count = max_sharindx;
+ vl_fwd = table->entries;
+
+ /* VL Forwarding Parameters Table */
+ table = &priv->static_config.tables[BLK_IDX_VL_FORWARDING_PARAMS];
+ table->entries = kcalloc(1, table->ops->unpacked_entry_size,
+ GFP_KERNEL);
+ if (!table->entries)
+ return -ENOMEM;
+ table->entry_count = 1;
+ vl_fwd_params = table->entries;
+
+ /* Reserve some frame buffer memory for the critical-traffic virtual
+ * links (this needs to be done). At the moment, hardcode the value
+ * at 100 blocks of 128 bytes of memory each. This leaves 829 blocks
+ * remaining for best-effort traffic. TODO: figure out a more flexible
+ * way to perform the frame buffer partitioning.
+ */
+ l2_fwd_params->part_spc[0] = SJA1105_MAX_FRAME_MEMORY -
+ SJA1105_VL_FRAME_MEMORY;
+ vl_fwd_params->partspc[0] = SJA1105_VL_FRAME_MEMORY;
+
+ for (i = 0; i < num_virtual_links; i++) {
+ unsigned long cookie = vl_lookup[i].flow_cookie;
+ struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
+
+ if (rule->vl.type == SJA1105_VL_NONCRITICAL)
+ continue;
+ if (rule->vl.type == SJA1105_VL_TIME_TRIGGERED) {
+ int sharindx = rule->vl.sharindx;
+
+ vl_policing[i].type = 1;
+ vl_policing[i].sharindx = sharindx;
+ vl_policing[i].maxlen = rule->vl.maxlen;
+ vl_policing[sharindx].type = 1;
+
+ vl_fwd[i].type = 1;
+ vl_fwd[sharindx].type = 1;
+ vl_fwd[sharindx].priority = rule->vl.ipv;
+ vl_fwd[sharindx].partition = 0;
+ vl_fwd[sharindx].destports = rule->vl.destports;
+ }
+ }
+
return 0;
}
@@ -300,3 +410,387 @@ int sja1105_vl_delete(struct sja1105_private *priv, int port,
return sja1105_static_config_reload(priv, SJA1105_VIRTUAL_LINKS);
}
+
+/* Insert into the global gate list, sorted by gate action time. */
+static int sja1105_insert_gate_entry(struct sja1105_gating_config *gating_cfg,
+ struct sja1105_rule *rule,
+ u8 gate_state, s64 entry_time,
+ struct netlink_ext_ack *extack)
+{
+ struct sja1105_gate_entry *e;
+ int rc;
+
+ e = kzalloc(sizeof(*e), GFP_KERNEL);
+ if (!e)
+ return -ENOMEM;
+
+ e->rule = rule;
+ e->gate_state = gate_state;
+ e->interval = entry_time;
+
+ if (list_empty(&gating_cfg->entries)) {
+ list_add(&e->list, &gating_cfg->entries);
+ } else {
+ struct sja1105_gate_entry *p;
+
+ list_for_each_entry(p, &gating_cfg->entries, list) {
+ if (p->interval == e->interval) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Gate conflict");
+ rc = -EBUSY;
+ goto err;
+ }
+
+ if (e->interval < p->interval)
+ break;
+ }
+ list_add(&e->list, p->list.prev);
+ }
+
+ gating_cfg->num_entries++;
+
+ return 0;
+err:
+ kfree(e);
+ return rc;
+}
+
+/* The gate entries contain absolute times in their e->interval field. Convert
+ * that to proper intervals (i.e. "0, 5, 10, 15" to "5, 5, 5, 5").
+ */
+static void
+sja1105_gating_cfg_time_to_interval(struct sja1105_gating_config *gating_cfg,
+ u64 cycle_time)
+{
+ struct sja1105_gate_entry *last_e;
+ struct sja1105_gate_entry *e;
+ struct list_head *prev;
+ u32 prev_time = 0;
+
+ list_for_each_entry(e, &gating_cfg->entries, list) {
+ struct sja1105_gate_entry *p;
+
+ prev = e->list.prev;
+
+ if (prev == &gating_cfg->entries)
+ continue;
+
+ p = list_entry(prev, struct sja1105_gate_entry, list);
+ prev_time = e->interval;
+ p->interval = e->interval - p->interval;
+ }
+ last_e = list_last_entry(&gating_cfg->entries,
+ struct sja1105_gate_entry, list);
+ if (last_e->list.prev != &gating_cfg->entries)
+ last_e->interval = cycle_time - last_e->interval;
+}
+
+static void sja1105_free_gating_config(struct sja1105_gating_config *gating_cfg)
+{
+ struct sja1105_gate_entry *e, *n;
+
+ list_for_each_entry_safe(e, n, &gating_cfg->entries, list) {
+ list_del(&e->list);
+ kfree(e);
+ }
+}
+
+static int sja1105_compose_gating_subschedule(struct sja1105_private *priv,
+ struct netlink_ext_ack *extack)
+{
+ struct sja1105_gating_config *gating_cfg = &priv->tas_data.gating_cfg;
+ struct sja1105_rule *rule;
+ s64 max_cycle_time = 0;
+ s64 its_base_time = 0;
+ int i, rc = 0;
+
+ list_for_each_entry(rule, &priv->flow_block.rules, list) {
+ if (rule->type != SJA1105_RULE_VL)
+ continue;
+ if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
+ continue;
+
+ if (max_cycle_time < rule->vl.cycle_time) {
+ max_cycle_time = rule->vl.cycle_time;
+ its_base_time = rule->vl.base_time;
+ }
+ }
+
+ if (!max_cycle_time)
+ return 0;
+
+ dev_dbg(priv->ds->dev, "max_cycle_time %lld its_base_time %lld\n",
+ max_cycle_time, its_base_time);
+
+ sja1105_free_gating_config(gating_cfg);
+
+ gating_cfg->base_time = its_base_time;
+ gating_cfg->cycle_time = max_cycle_time;
+ gating_cfg->num_entries = 0;
+
+ list_for_each_entry(rule, &priv->flow_block.rules, list) {
+ s64 time;
+ s64 rbt;
+
+ if (rule->type != SJA1105_RULE_VL)
+ continue;
+ if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
+ continue;
+
+ /* Calculate the difference between this gating schedule's
+ * base time, and the base time of the gating schedule with the
+ * longest cycle time. We call it the relative base time (rbt).
+ */
+ rbt = future_base_time(rule->vl.base_time, rule->vl.cycle_time,
+ its_base_time);
+ rbt -= its_base_time;
+
+ time = rbt;
+
+ for (i = 0; i < rule->vl.num_entries; i++) {
+ u8 gate_state = rule->vl.entries[i].gate_state;
+ s64 entry_time = time;
+
+ while (entry_time < max_cycle_time) {
+ rc = sja1105_insert_gate_entry(gating_cfg, rule,
+ gate_state,
+ entry_time,
+ extack);
+ if (rc)
+ goto err;
+
+ entry_time += rule->vl.cycle_time;
+ }
+ time += rule->vl.entries[i].interval;
+ }
+ }
+
+ sja1105_gating_cfg_time_to_interval(gating_cfg, max_cycle_time);
+
+ return 0;
+err:
+ sja1105_free_gating_config(gating_cfg);
+ return rc;
+}
+
+int sja1105_vl_gate(struct sja1105_private *priv, int port,
+ struct netlink_ext_ack *extack, unsigned long cookie,
+ struct sja1105_key *key, u32 index, s32 prio,
+ u64 base_time, u64 cycle_time, u64 cycle_time_ext,
+ u32 num_entries, struct action_gate_entry *entries)
+{
+ struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
+ int ipv = -1;
+ int i, rc;
+ s32 rem;
+
+ if (cycle_time_ext) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Cycle time extension not supported");
+ return -EOPNOTSUPP;
+ }
+
+ div_s64_rem(base_time, sja1105_delta_to_ns(1), &rem);
+ if (rem) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Base time must be multiple of 200 ns");
+ return -ERANGE;
+ }
+
+ div_s64_rem(cycle_time, sja1105_delta_to_ns(1), &rem);
+ if (rem) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Cycle time must be multiple of 200 ns");
+ return -ERANGE;
+ }
+
+ if (dsa_port_is_vlan_filtering(dsa_to_port(priv->ds, port)) &&
+ key->type != SJA1105_KEY_VLAN_AWARE_VL) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Can only gate based on {DMAC, VID, PCP}");
+ return -EOPNOTSUPP;
+ } else if (key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Can only gate based on DMAC");
+ return -EOPNOTSUPP;
+ }
+
+ if (!rule) {
+ rule = kzalloc(sizeof(*rule), GFP_KERNEL);
+ if (!rule)
+ return -ENOMEM;
+
+ list_add(&rule->list, &priv->flow_block.rules);
+ rule->cookie = cookie;
+ rule->type = SJA1105_RULE_VL;
+ rule->key = *key;
+ rule->vl.type = SJA1105_VL_TIME_TRIGGERED;
+ rule->vl.sharindx = index;
+ rule->vl.base_time = base_time;
+ rule->vl.cycle_time = cycle_time;
+ rule->vl.num_entries = num_entries;
+ rule->vl.entries = kcalloc(num_entries,
+ sizeof(struct action_gate_entry),
+ GFP_KERNEL);
+ if (!rule->vl.entries) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ for (i = 0; i < num_entries; i++) {
+ div_s64_rem(entries[i].interval,
+ sja1105_delta_to_ns(1), &rem);
+ if (rem) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Interval must be multiple of 200 ns");
+ rc = -ERANGE;
+ goto out;
+ }
+
+ if (!entries[i].interval) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Interval cannot be zero");
+ rc = -ERANGE;
+ goto out;
+ }
+
+ if (ns_to_sja1105_delta(entries[i].interval) >
+ SJA1105_TAS_MAX_DELTA) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Maximum interval is 52 ms");
+ rc = -ERANGE;
+ goto out;
+ }
+
+ if (entries[i].maxoctets != -1) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Cannot offload IntervalOctetMax");
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+
+ if (ipv == -1) {
+ ipv = entries[i].ipv;
+ } else if (ipv != entries[i].ipv) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "Only support a single IPV per VL");
+ rc = -EOPNOTSUPP;
+ goto out;
+ }
+
+ rule->vl.entries[i] = entries[i];
+ }
+
+ if (ipv == -1) {
+ if (key->type == SJA1105_KEY_VLAN_AWARE_VL)
+ ipv = key->vl.pcp;
+ else
+ ipv = 0;
+ }
+
+ /* TODO: support per-flow MTU */
+ rule->vl.maxlen = VLAN_ETH_FRAME_LEN + ETH_FCS_LEN;
+ rule->vl.ipv = ipv;
+ }
+
+ rule->port_mask |= BIT(port);
+
+ rc = sja1105_compose_gating_subschedule(priv, extack);
+ if (rc)
+ goto out;
+
+ rc = sja1105_init_virtual_links(priv, extack);
+ if (rc)
+ goto out;
+
+ if (sja1105_gating_check_conflicts(priv, -1, extack)) {
+ NL_SET_ERR_MSG_MOD(extack, "Conflict with tc-taprio schedule");
+ rc = -ERANGE;
+ goto out;
+ }
+
+out:
+ if (rc) {
+ rule->port_mask &= ~BIT(port);
+ if (!rule->port_mask) {
+ list_del(&rule->list);
+ kfree(rule->vl.entries);
+ kfree(rule);
+ }
+ }
+
+ return rc;
+}
+
+static int sja1105_find_vlid(struct sja1105_private *priv, int port,
+ struct sja1105_key *key)
+{
+ struct sja1105_vl_lookup_entry *vl_lookup;
+ struct sja1105_table *table;
+ int i;
+
+ if (WARN_ON(key->type != SJA1105_KEY_VLAN_AWARE_VL &&
+ key->type != SJA1105_KEY_VLAN_UNAWARE_VL))
+ return -1;
+
+ table = &priv->static_config.tables[BLK_IDX_VL_LOOKUP];
+ vl_lookup = table->entries;
+
+ for (i = 0; i < table->entry_count; i++) {
+ if (key->type == SJA1105_KEY_VLAN_AWARE_VL) {
+ if (vl_lookup[i].port == port &&
+ vl_lookup[i].macaddr == key->vl.dmac &&
+ vl_lookup[i].vlanid == key->vl.vid &&
+ vl_lookup[i].vlanprior == key->vl.pcp)
+ return i;
+ } else {
+ if (vl_lookup[i].port == port &&
+ vl_lookup[i].macaddr == key->vl.dmac)
+ return i;
+ }
+ }
+
+ return -1;
+}
+
+int sja1105_vl_stats(struct sja1105_private *priv, int port,
+ struct sja1105_rule *rule, struct flow_stats *stats,
+ struct netlink_ext_ack *extack)
+{
+ const struct sja1105_regs *regs = priv->info->regs;
+ u8 buf[SJA1105_SIZE_VL_STATUS] = {0};
+ u64 unreleased;
+ u64 timingerr;
+ u64 lengtherr;
+ int vlid, rc;
+ u64 pkts;
+
+ if (rule->vl.type != SJA1105_VL_TIME_TRIGGERED)
+ return 0;
+
+ vlid = sja1105_find_vlid(priv, port, &rule->key);
+ if (vlid < 0)
+ return 0;
+
+ rc = sja1105_xfer_buf(priv, SPI_READ, regs->vl_status + 2 * vlid, buf,
+ SJA1105_SIZE_VL_STATUS);
+ if (rc) {
+ NL_SET_ERR_MSG_MOD(extack, "SPI access failed");
+ return rc;
+ }
+
+ sja1105_unpack(buf, &timingerr, 31, 16, SJA1105_SIZE_VL_STATUS);
+ sja1105_unpack(buf, &unreleased, 15, 0, SJA1105_SIZE_VL_STATUS);
+ sja1105_unpack(buf, &lengtherr, 47, 32, SJA1105_SIZE_VL_STATUS);
+
+ pkts = timingerr + unreleased + lengtherr;
+
+ flow_stats_update(stats, 0, pkts - rule->vl.stats.pkts,
+ jiffies - rule->vl.stats.lastused,
+ FLOW_ACTION_HW_STATS_IMMEDIATE);
+
+ rule->vl.stats.pkts = pkts;
+ rule->vl.stats.lastused = jiffies;
+
+ return 0;
+}
@@ -15,6 +15,16 @@ int sja1105_vl_delete(struct sja1105_private *priv, int port,
struct sja1105_rule *rule,
struct netlink_ext_ack *extack);
+int sja1105_vl_gate(struct sja1105_private *priv, int port,
+ struct netlink_ext_ack *extack, unsigned long cookie,
+ struct sja1105_key *key, u32 index, s32 prio,
+ u64 base_time, u64 cycle_time, u64 cycle_time_ext,
+ u32 num_entries, struct action_gate_entry *entries);
+
+int sja1105_vl_stats(struct sja1105_private *priv, int port,
+ struct sja1105_rule *rule, struct flow_stats *stats,
+ struct netlink_ext_ack *extack);
+
#else
static inline int sja1105_vl_redirect(struct sja1105_private *priv, int port,
@@ -36,6 +46,27 @@ static inline int sja1105_vl_delete(struct sja1105_private *priv,
return -EOPNOTSUPP;
}
+static inline int sja1105_vl_gate(struct sja1105_private *priv, int port,
+ struct netlink_ext_ack *extack,
+ unsigned long cookie,
+ struct sja1105_key *key, u32 index, s32 prio,
+ u64 base_time, u64 cycle_time,
+ u64 cycle_time_ext, u32 num_entries,
+ struct action_gate_entry *entries)
+{
+ NL_SET_ERR_MSG_MOD(extack, "Virtual Links not compiled in");
+ return -EOPNOTSUPP;
+}
+
+static inline int sja1105_vl_stats(struct sja1105_private *priv, int port,
+ struct sja1105_rule *rule,
+ struct flow_stats *stats,
+ struct netlink_ext_ack *extack)
+{
+ NL_SET_ERR_MSG_MOD(extack, "Virtual Links not compiled in");
+ return -EOPNOTSUPP;
+}
+
#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_VL) */
#endif /* _SJA1105_VL_H */