#define SJA1105_SIZE_VL_STATUS 8
+/* 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;
+
+ 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);
+ 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;
+}
+
/* 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
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;
-
- 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);
- 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,
projects / kernel.git / commitdiff