diff options
| -rw-r--r-- | CORE/HDD/src/wlan_hdd_ipa.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/CORE/HDD/src/wlan_hdd_ipa.c b/CORE/HDD/src/wlan_hdd_ipa.c index a2742be3575e..37eae808bdc6 100644 --- a/CORE/HDD/src/wlan_hdd_ipa.c +++ b/CORE/HDD/src/wlan_hdd_ipa.c @@ -287,6 +287,7 @@ struct hdd_ipa_priv { struct work_struct rm_work; enum ipa_client_type prod_client; + atomic_t tx_ref_cnt; uint32_t pending_hw_desc_cnt; uint32_t hw_desc_cnt; spinlock_t q_lock; @@ -893,6 +894,9 @@ static int hdd_ipa_rm_try_release(struct hdd_ipa_priv *hdd_ipa) if (!hdd_ipa_is_rm_enabled(hdd_ipa)) return 0; + if (atomic_read(&hdd_ipa->tx_ref_cnt)) + return -EAGAIN; + spin_lock_bh(&hdd_ipa->q_lock); if (hdd_ipa->pending_hw_desc_cnt || hdd_ipa->pend_q_cnt) { spin_unlock_bh(&hdd_ipa->q_lock); @@ -1138,6 +1142,7 @@ static int hdd_ipa_setup_rm(struct hdd_ipa_priv *hdd_ipa) adf_os_spinlock_init(&hdd_ipa->rm_lock); hdd_ipa->rm_state = HDD_IPA_RM_RELEASED; + atomic_set(&hdd_ipa->tx_ref_cnt, 0); return ret; @@ -1553,6 +1558,10 @@ static void hdd_ipa_nbuf_cb(adf_nbuf_t skb) ipa_free_skb((struct ipa_rx_data *) NBUF_OWNER_PRIV_DATA(skb)); hdd_ipa->stats.num_tx_comp_cnt++; + + atomic_dec(&hdd_ipa->tx_ref_cnt); + + hdd_ipa_rm_try_release(hdd_ipa); } static void hdd_ipa_i2w_cb(void *priv, enum ipa_dp_evt_type evt, @@ -1624,6 +1633,17 @@ static void hdd_ipa_i2w_cb(void *priv, enum ipa_dp_evt_type evt, return; } + atomic_inc(&hdd_ipa->tx_ref_cnt); + + /* + * If PROD resource is not requested here then there may be cases where + * IPA hardware may be clocked down because of not having proper + * dependency graph between WLAN CONS and modem PROD pipes. Adding the + * workaround to request PROD resource while data is going over CONS + * pipe to prevent the IPA hardware clockdown. + */ + hdd_ipa_rm_request(hdd_ipa); + iface_context->stats.num_tx++; } @@ -2373,6 +2393,9 @@ static ssize_t hdd_ipa_debugfs_read_ipa_stats(struct file *file, len += scnprintf(buf + len, buf_len - len, "%30s: %s\n", "rm_state", hdd_ipa_rm_state_to_str(hdd_ipa->rm_state)); + len += scnprintf(buf + len, buf_len - len, "%30s: %d\n", "tx_ref_cnt", + atomic_read(&hdd_ipa->tx_ref_cnt)); + len += HDD_IPA_STATS(buf + len, buf_len - len, hdd_ipa, num_rm_grant); len += HDD_IPA_STATS(buf + len, buf_len - len, hdd_ipa, num_rm_release); len += HDD_IPA_STATS(buf + len, buf_len - len, hdd_ipa, |