diff mbox series

[07/19] wifi: iwlwifi: enable 320 MHz on slow PCIe links

Message ID 20250205145347.1e5356a3b124.I1224023721aaeff8ebcaa47dff88613c7fd0533a@changeid (mailing list archive)
State New
Delegated to: Johannes Berg
Headers show
Series wifi: iwlwifi: updates - 2025-02-05 | expand

Commit Message

Miri Korenblit Feb. 5, 2025, 12:55 p.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

Despite not being able to sustain the full 320 MHz throughput
even at MCS 9, enable 320 MHz on slow PCIe links. This may in
some cases result in frames being dropped (on the air) by the
firmware if they cannot be delivered to the host, but it can
still be better to use 320 MHz.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
 .../net/wireless/intel/iwlwifi/iwl-nvm-parse.c  | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
index 9f7e013252fe..76259ac261cb 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c
@@ -913,11 +913,8 @@  iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans,
 {
 	bool is_ap = iftype_data->types_mask & (BIT(NL80211_IFTYPE_AP) |
 						BIT(NL80211_IFTYPE_P2P_GO));
-	bool no_320;
-
-	no_320 = (!trans->trans_cfg->integrated &&
-		 trans->pcie_link_speed < PCI_EXP_LNKSTA_CLS_8_0GB) ||
-		 trans->reduced_cap_sku;
+	bool slow_pcie = (!trans->trans_cfg->integrated &&
+			  trans->pcie_link_speed < PCI_EXP_LNKSTA_CLS_8_0GB);
 
 	if (!data->sku_cap_11be_enable || iwlwifi_mod_params.disable_11be)
 		iftype_data->eht_cap.has_eht = false;
@@ -944,7 +941,7 @@  iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans,
 				       IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK);
 		break;
 	case NL80211_BAND_6GHZ:
-		if (!no_320) {
+		if (!trans->reduced_cap_sku) {
 			iftype_data->eht_cap.eht_cap_elem.phy_cap_info[0] |=
 				IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ;
 			iftype_data->eht_cap.eht_cap_elem.phy_cap_info[1] |=
@@ -986,6 +983,14 @@  iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans,
 				iftype_data->eht_cap.eht_cap_elem.phy_cap_info[4] |= 0x10;
 			}
 		}
+
+		if (slow_pcie) {
+			struct ieee80211_eht_mcs_nss_supp *mcs_nss =
+				&iftype_data->eht_cap.eht_mcs_nss_supp;
+
+			mcs_nss->bw._320.rx_tx_mcs11_max_nss = 0;
+			mcs_nss->bw._320.rx_tx_mcs13_max_nss = 0;
+		}
 	} else {
 		struct ieee80211_he_mcs_nss_supp *he_mcs_nss_supp =
 			&iftype_data->he_cap.he_mcs_nss_supp;