summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLouis Peens <louis.peens@netronome.com>2020-05-19 16:15:02 +0200
committerDavid S. Miller <davem@davemloft.net>2020-05-19 15:27:21 -0700
commit465957c257f3083785fe8e954724cfac2e5d33e9 (patch)
tree70a867ba94e3dc86b9e53f8858bd71f0ed64c712
parente09303d3c4d9d9f71657550d61eb00bc84c13859 (diff)
nfp: flower: inform firmware of flower features
For backwards compatibility it may be required for the firmware to disable certain features depending on the features supported by the host. Combine the host feature bits and firmware feature bits and write this back to the firmware. Signed-off-by: Louis Peens <louis.peens@netronome.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/netronome/nfp/flower/main.c106
-rw-r--r--drivers/net/ethernet/netronome/nfp/flower/main.h11
2 files changed, 87 insertions, 30 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.c b/drivers/net/ethernet/netronome/nfp/flower/main.c
index 62c202307940..d054553c75e0 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.c
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.c
@@ -665,6 +665,77 @@ err_clear_nn:
return err;
}
+static void nfp_flower_wait_host_bit(struct nfp_app *app)
+{
+ unsigned long err_at;
+ u64 feat;
+ int err;
+
+ /* Wait for HOST_ACK flag bit to propagate */
+ err_at = jiffies + msecs_to_jiffies(100);
+ do {
+ feat = nfp_rtsym_read_le(app->pf->rtbl,
+ "_abi_flower_combined_features_global",
+ &err);
+ if (time_is_before_eq_jiffies(err_at)) {
+ nfp_warn(app->cpp,
+ "HOST_ACK bit not propagated in FW.\n");
+ break;
+ }
+ usleep_range(1000, 2000);
+ } while (!err && !(feat & NFP_FL_FEATS_HOST_ACK));
+
+ if (err)
+ nfp_warn(app->cpp,
+ "Could not read global features entry from FW\n");
+}
+
+static int nfp_flower_sync_feature_bits(struct nfp_app *app)
+{
+ struct nfp_flower_priv *app_priv = app->priv;
+ int err;
+
+ /* Tell the firmware of the host supported features. */
+ err = nfp_rtsym_write_le(app->pf->rtbl, "_abi_flower_host_mask",
+ app_priv->flower_ext_feats |
+ NFP_FL_FEATS_HOST_ACK);
+ if (!err)
+ nfp_flower_wait_host_bit(app);
+ else if (err != -ENOENT)
+ return err;
+
+ /* Tell the firmware that the driver supports lag. */
+ err = nfp_rtsym_write_le(app->pf->rtbl,
+ "_abi_flower_balance_sync_enable", 1);
+ if (!err) {
+ app_priv->flower_ext_feats |= NFP_FL_ENABLE_LAG;
+ nfp_flower_lag_init(&app_priv->nfp_lag);
+ } else if (err == -ENOENT) {
+ nfp_warn(app->cpp, "LAG not supported by FW.\n");
+ } else {
+ return err;
+ }
+
+ if (app_priv->flower_ext_feats & NFP_FL_FEATS_FLOW_MOD) {
+ /* Tell the firmware that the driver supports flow merging. */
+ err = nfp_rtsym_write_le(app->pf->rtbl,
+ "_abi_flower_merge_hint_enable", 1);
+ if (!err) {
+ app_priv->flower_ext_feats |= NFP_FL_ENABLE_FLOW_MERGE;
+ nfp_flower_internal_port_init(app_priv);
+ } else if (err == -ENOENT) {
+ nfp_warn(app->cpp,
+ "Flow merge not supported by FW.\n");
+ } else {
+ return err;
+ }
+ } else {
+ nfp_warn(app->cpp, "Flow mod/merge not supported by FW.\n");
+ }
+
+ return 0;
+}
+
static int nfp_flower_init(struct nfp_app *app)
{
u64 version, features, ctx_count, num_mems;
@@ -753,35 +824,11 @@ static int nfp_flower_init(struct nfp_app *app)
if (err)
app_priv->flower_ext_feats = 0;
else
- app_priv->flower_ext_feats = features;
+ app_priv->flower_ext_feats = features & NFP_FL_FEATS_HOST;
- /* Tell the firmware that the driver supports lag. */
- err = nfp_rtsym_write_le(app->pf->rtbl,
- "_abi_flower_balance_sync_enable", 1);
- if (!err) {
- app_priv->flower_ext_feats |= NFP_FL_ENABLE_LAG;
- nfp_flower_lag_init(&app_priv->nfp_lag);
- } else if (err == -ENOENT) {
- nfp_warn(app->cpp, "LAG not supported by FW.\n");
- } else {
- goto err_cleanup_metadata;
- }
-
- if (app_priv->flower_ext_feats & NFP_FL_FEATS_FLOW_MOD) {
- /* Tell the firmware that the driver supports flow merging. */
- err = nfp_rtsym_write_le(app->pf->rtbl,
- "_abi_flower_merge_hint_enable", 1);
- if (!err) {
- app_priv->flower_ext_feats |= NFP_FL_ENABLE_FLOW_MERGE;
- nfp_flower_internal_port_init(app_priv);
- } else if (err == -ENOENT) {
- nfp_warn(app->cpp, "Flow merge not supported by FW.\n");
- } else {
- goto err_lag_clean;
- }
- } else {
- nfp_warn(app->cpp, "Flow mod/merge not supported by FW.\n");
- }
+ err = nfp_flower_sync_feature_bits(app);
+ if (err)
+ goto err_cleanup;
if (app_priv->flower_ext_feats & NFP_FL_FEATS_VF_RLIM)
nfp_flower_qos_init(app);
@@ -792,10 +839,9 @@ static int nfp_flower_init(struct nfp_app *app)
return 0;
-err_lag_clean:
+err_cleanup:
if (app_priv->flower_ext_feats & NFP_FL_ENABLE_LAG)
nfp_flower_lag_cleanup(&app_priv->nfp_lag);
-err_cleanup_metadata:
nfp_flower_metadata_cleanup(app);
err_free_app_priv:
vfree(app->priv);
diff --git a/drivers/net/ethernet/netronome/nfp/flower/main.h b/drivers/net/ethernet/netronome/nfp/flower/main.h
index 7db3be0b17e9..59abea2a39ad 100644
--- a/drivers/net/ethernet/netronome/nfp/flower/main.h
+++ b/drivers/net/ethernet/netronome/nfp/flower/main.h
@@ -44,10 +44,21 @@ struct nfp_app;
#define NFP_FL_FEATS_FLOW_MOD BIT(5)
#define NFP_FL_FEATS_PRE_TUN_RULES BIT(6)
#define NFP_FL_FEATS_IPV6_TUN BIT(7)
+#define NFP_FL_FEATS_HOST_ACK BIT(31)
#define NFP_FL_ENABLE_FLOW_MERGE BIT(0)
#define NFP_FL_ENABLE_LAG BIT(1)
+#define NFP_FL_FEATS_HOST \
+ (NFP_FL_FEATS_GENEVE | \
+ NFP_FL_NBI_MTU_SETTING | \
+ NFP_FL_FEATS_GENEVE_OPT | \
+ NFP_FL_FEATS_VLAN_PCP | \
+ NFP_FL_FEATS_VF_RLIM | \
+ NFP_FL_FEATS_FLOW_MOD | \
+ NFP_FL_FEATS_PRE_TUN_RULES | \
+ NFP_FL_FEATS_IPV6_TUN)
+
struct nfp_fl_mask_id {
struct circ_buf mask_id_free_list;
ktime_t *last_used;