2024-03-27 17:09:40

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 00/10] wifi: ath12k: add MU-MIMO and 160 MHz bandwidth support

Add support for
1. enabling MU-MIMO in HE and EHT modes from hardware
2. setting fixed HE rate/GI/LTF
3. 160 MHz bandwidth in HE mode
4. extended NSS bandwidth support

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

changes in v2:
- Amend mac80211 patch description as the patch is not specific
to AP mode.
- Amend EHT MU-MIMO patch description to specify future support
for STA mode.

Pradeep Kumar Chitrapu (10):
wifi: mac80211: Add EHT UL MU-MIMO flag in ieee80211_bss_conf
wifi: ath12k: push HE MU-MIMO params from hostapd to hardware
wifi: ath12k: push EHT MU-MIMO params from hostapd to hardware
wifi: ath12k: move HE MCS mapper to a separate function
wifi: ath12k: generate rx and tx mcs maps for supported HE mcs
wifi: ath12k: fix TX and RX MCS rate configurations in HE mode
wifi: ath12k: add support for setting fixed HE rate/GI/LTF
wifi: ath12k: clean up 80P80 support
wifi: ath12k: add support for 160 MHz bandwidth
wifi: ath12k: add extended NSS bandwidth support for 160 MHz

drivers/net/wireless/ath/ath12k/core.h | 2 +
drivers/net/wireless/ath/ath12k/mac.c | 1035 ++++++++++++++++++++----
drivers/net/wireless/ath/ath12k/mac.h | 17 +
drivers/net/wireless/ath/ath12k/wmi.c | 24 +-
drivers/net/wireless/ath/ath12k/wmi.h | 98 ++-
include/net/mac80211.h | 4 +
net/mac80211/cfg.c | 5 +
7 files changed, 981 insertions(+), 204 deletions(-)


base-commit: fe7e1b830cf3c0272aa4eaf367c4c7b29c169c3d
--
2.17.1

2024-03-27 17:09:50

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 10/10] wifi: ath12k: add extended NSS bandwidth support for 160 MHz

Currently rx and tx MCS map for 160 MHz under HE capabilities
are not updating properly, when 160 MHz is configured with NSS
lesser than max NSS support. Fix this by utilizing
nss_ratio_enabled and nss_ratio_info fields sent by firmware
in service ready event.

However, if firmware advertises EXT NSS BW support in VHT caps
as 1(1x2) and when nss_ratio_info indicates 1:1, reset the EXT
NSS BW Support in VHT caps to 0 which indicates 1x1. This is
to avoid incorrectly chosing 1:2 NSS ratio when using the
default VHT caps advertised by firmware.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 33 ++++++++++++++++++++++-----
1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 92b597697603..a5044b734868 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -2103,8 +2103,10 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
arg->peer_nss = min(sta->deflink.rx_nss, max_nss);

if (arg->peer_phymode == MODE_11AX_HE160) {
- tx_nss = ath12k_get_nss_160mhz(ar, max_nss);
+ tx_nss = ath12k_get_nss_160mhz(ar, ar->num_tx_chains);
rx_nss = min(arg->peer_nss, tx_nss);
+
+ arg->peer_nss = min(sta->deflink.rx_nss, ar->num_rx_chains);
arg->peer_bw_rxnss_override = ATH12K_BW_NSS_MAP_ENABLE;

if (!rx_nss) {
@@ -4993,6 +4995,12 @@ ath12k_create_vht_cap(struct ath12k *ar, u32 rate_cap_tx_chainmask,
vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(rxmcs_map);
vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(txmcs_map);

+ /* Check if the HW supports 1:1 NSS ratio and reset
+ * EXT NSS BW Support field to 0 to indicate 1:1 ratio
+ */
+ if (ar->pdev->cap.nss_ratio_info == WMI_NSS_RATIO_1_NSS)
+ vht_cap.cap &= ~IEEE80211_VHT_CAP_EXT_NSS_BW_MASK;
+
return vht_cap;
}

@@ -5175,11 +5183,12 @@ static void ath12k_mac_set_hemcsmap(struct ath12k *ar,
struct ieee80211_sta_he_cap *he_cap)
{
struct ieee80211_he_mcs_nss_supp *mcs_nss = &he_cap->he_mcs_nss_supp;
- u16 txmcs_map, rxmcs_map;
+ u8 maxtxnss_160 = ath12k_get_nss_160mhz(ar, ar->num_tx_chains);
+ u8 maxrxnss_160 = ath12k_get_nss_160mhz(ar, ar->num_rx_chains);
+ u16 txmcs_map_160 = 0, rxmcs_map_160 = 0;
+ u16 txmcs_map = 0, rxmcs_map = 0;
u32 i;

- rxmcs_map = 0;
- txmcs_map = 0;
for (i = 0; i < 8; i++) {
if (i < ar->num_tx_chains &&
(ar->cfg_tx_chainmask >> cap->tx_chain_mask_shift) & BIT(i))
@@ -5192,12 +5201,24 @@ static void ath12k_mac_set_hemcsmap(struct ath12k *ar,
rxmcs_map |= IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2);
else
rxmcs_map |= IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2);
+
+ if (i < maxtxnss_160 &&
+ (ar->cfg_tx_chainmask >> cap->tx_chain_mask_shift) & BIT(i))
+ txmcs_map_160 |= IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2);
+ else
+ txmcs_map_160 |= IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2);
+
+ if (i < maxrxnss_160 &&
+ (ar->cfg_tx_chainmask >> cap->tx_chain_mask_shift) & BIT(i))
+ rxmcs_map_160 |= IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2);
+ else
+ rxmcs_map_160 |= IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2);
}

mcs_nss->rx_mcs_80 = cpu_to_le16(rxmcs_map & 0xffff);
mcs_nss->tx_mcs_80 = cpu_to_le16(txmcs_map & 0xffff);
- mcs_nss->rx_mcs_160 = cpu_to_le16(rxmcs_map & 0xffff);
- mcs_nss->tx_mcs_160 = cpu_to_le16(txmcs_map & 0xffff);
+ mcs_nss->rx_mcs_160 = cpu_to_le16(rxmcs_map_160 & 0xffff);
+ mcs_nss->tx_mcs_160 = cpu_to_le16(txmcs_map_160 & 0xffff);
}

static void ath12k_mac_copy_he_cap(struct ath12k *ar,
--
2.17.1

2024-03-27 17:09:51

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 02/10] wifi: ath12k: push HE MU-MIMO params from hostapd to hardware

Currently, only the HE IE in management frames is updated with
respect to MU-MIMO configurations, but this change is not
reflected in the hardware. Add support to propagate MU-MIMO
configurations to the hardware as well.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: Muna Sinada <[email protected]>
Signed-off-by: Muna Sinada <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 214 +++++++++++++++++---------
drivers/net/wireless/ath/ath12k/mac.h | 15 ++
drivers/net/wireless/ath/ath12k/wmi.h | 28 +---
3 files changed, 155 insertions(+), 102 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 52a5fb8b03e9..9921303dc5fa 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -2406,15 +2406,119 @@ static int ath12k_setup_peer_smps(struct ath12k *ar, struct ath12k_vif *arvif,
ath12k_smps_map[smps]);
}

+static int ath12k_mac_set_he_txbf_conf(struct ath12k_vif *arvif)
+{
+ struct ath12k *ar = arvif->ar;
+ u32 param = WMI_VDEV_PARAM_SET_HEMU_MODE;
+ u32 value = 0;
+ int ret;
+
+ if (!arvif->vif->bss_conf.he_support)
+ return 0;
+
+ if (arvif->vif->bss_conf.he_su_beamformer) {
+ value |= u32_encode_bits(HE_SU_BFER_ENABLE, HE_MODE_SU_TX_BFER);
+ if (arvif->vif->bss_conf.he_mu_beamformer &&
+ arvif->vdev_type == WMI_VDEV_TYPE_AP)
+ value |= u32_encode_bits(HE_MU_BFER_ENABLE, HE_MODE_MU_TX_BFER);
+ }
+
+ if (arvif->vif->type != NL80211_IFTYPE_MESH_POINT) {
+ value |= u32_encode_bits(HE_DL_MUOFDMA_ENABLE, HE_MODE_DL_OFDMA) |
+ u32_encode_bits(HE_UL_MUOFDMA_ENABLE, HE_MODE_UL_OFDMA);
+
+ if (arvif->vif->bss_conf.he_full_ul_mumimo)
+ value |= u32_encode_bits(HE_UL_MUMIMO_ENABLE, HE_MODE_UL_MUMIMO);
+
+ if (arvif->vif->bss_conf.he_su_beamformee)
+ value |= u32_encode_bits(HE_SU_BFEE_ENABLE, HE_MODE_SU_TX_BFEE);
+ }
+
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param, value);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set vdev %d HE MU mode: %d\n",
+ arvif->vdev_id, ret);
+ return ret;
+ }
+
+ param = WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE;
+ value = u32_encode_bits(HE_VHT_SOUNDING_MODE_ENABLE, HE_VHT_SOUNDING_MODE) |
+ u32_encode_bits(HE_TRIG_NONTRIG_SOUNDING_MODE_ENABLE,
+ HE_TRIG_NONTRIG_SOUNDING_MODE);
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ param, value);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set vdev %d sounding mode: %d\n",
+ arvif->vdev_id, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ath12k_mac_vif_recalc_sta_he_txbf(struct ath12k *ar,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta_he_cap *he_cap,
+ int *hemode)
+{
+ struct ieee80211_he_cap_elem he_cap_elem = {};
+ struct ieee80211_sta_he_cap *cap_band;
+ struct cfg80211_chan_def def;
+
+ if (!vif->bss_conf.he_support)
+ return 0;
+
+ if (vif->type != NL80211_IFTYPE_STATION)
+ return -EINVAL;
+
+ if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
+ return -EINVAL;
+
+ if (def.chan->band == NL80211_BAND_2GHZ)
+ cap_band = &ar->mac.iftype[NL80211_BAND_2GHZ][vif->type].he_cap;
+ else
+ cap_band = &ar->mac.iftype[NL80211_BAND_5GHZ][vif->type].he_cap;
+
+ memcpy(&he_cap_elem, &cap_band->he_cap_elem, sizeof(he_cap_elem));
+
+ *hemode = 0;
+ if (HECAP_PHY_SUBFME_GET(he_cap_elem.phy_cap_info)) {
+ if (HECAP_PHY_SUBFMR_GET(he_cap->he_cap_elem.phy_cap_info))
+ *hemode |= u32_encode_bits(HE_SU_BFEE_ENABLE, HE_MODE_SU_TX_BFEE);
+ if (HECAP_PHY_MUBFMR_GET(he_cap->he_cap_elem.phy_cap_info))
+ *hemode |= u32_encode_bits(HE_MU_BFEE_ENABLE, HE_MODE_MU_TX_BFEE);
+ }
+
+ if (vif->type != NL80211_IFTYPE_MESH_POINT) {
+ *hemode |= u32_encode_bits(HE_DL_MUOFDMA_ENABLE, HE_MODE_DL_OFDMA) |
+ u32_encode_bits(HE_UL_MUOFDMA_ENABLE, HE_MODE_UL_OFDMA);
+
+ if (HECAP_PHY_ULMUMIMO_GET(he_cap_elem.phy_cap_info))
+ if (HECAP_PHY_ULMUMIMO_GET(he_cap->he_cap_elem.phy_cap_info))
+ *hemode |= u32_encode_bits(HE_UL_MUMIMO_ENABLE,
+ HE_MODE_UL_MUMIMO);
+
+ if (u32_get_bits(*hemode, HE_MODE_MU_TX_BFEE))
+ *hemode |= u32_encode_bits(HE_SU_BFEE_ENABLE, HE_MODE_SU_TX_BFEE);
+
+ if (u32_get_bits(*hemode, HE_MODE_MU_TX_BFER))
+ *hemode |= u32_encode_bits(HE_SU_BFER_ENABLE, HE_MODE_SU_TX_BFER);
+ }
+
+ return 0;
+}
+
static void ath12k_bss_assoc(struct ath12k *ar,
struct ath12k_vif *arvif,
struct ieee80211_bss_conf *bss_conf)
{
struct ieee80211_vif *vif = arvif->vif;
struct ath12k_wmi_peer_assoc_arg peer_arg;
+ struct ieee80211_sta_he_cap he_cap;
struct ieee80211_sta *ap_sta;
struct ath12k_peer *peer;
bool is_auth = false;
+ u32 hemode = 0;
int ret;

lockdep_assert_held(&ar->conf_mutex);
@@ -2434,8 +2538,28 @@ static void ath12k_bss_assoc(struct ath12k *ar,

ath12k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg, false);

+ /* he_cap here is updated at assoc success for sta mode only */
+ he_cap = ap_sta->deflink.he_cap;
+
+ /* ap_sta->deflink.he_cap must be protected by rcu_read_lock */
+ ret = ath12k_mac_vif_recalc_sta_he_txbf(ar, vif, &he_cap, &hemode);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to recalc he txbf for vdev %i on bss %pM: %d\n",
+ arvif->vdev_id, bss_conf->bssid, ret);
+ return;
+ }
+
rcu_read_unlock();

+ /* keep this before ath12k_wmi_send_peer_assoc_cmd() */
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ WMI_VDEV_PARAM_SET_HEMU_MODE, hemode);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to submit vdev param txbf 0x%x: %d\n",
+ hemode, ret);
+ return;
+ }
+
ret = ath12k_wmi_send_peer_assoc_cmd(ar, &peer_arg);
if (ret) {
ath12k_warn(ar->ab, "failed to run peer assoc for %pM vdev %i: %d\n",
@@ -2762,6 +2886,13 @@ static void ath12k_mac_bss_info_changed(struct ath12k *ar,
ether_addr_copy(arvif->bssid, info->bssid);

if (changed & BSS_CHANGED_BEACON_ENABLED) {
+ if (info->enable_beacon) {
+ ret = ath12k_mac_set_he_txbf_conf(arvif);
+ if (ret)
+ ath12k_warn(ar->ab,
+ "failed to set HE TXBF config for vdev: %d\n",
+ arvif->vdev_id);
+ }
ath12k_control_beaconing(arvif, info);

if (arvif->is_up && vif->bss_conf.he_support &&
@@ -4713,11 +4844,14 @@ static void ath12k_mac_copy_he_cap(struct ath12k_band_cap *band_cap,

he_cap_elem->mac_cap_info[1] &=
IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_MASK;
-
+ he_cap_elem->phy_cap_info[0] &=
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G |
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
+ he_cap_elem->phy_cap_info[0] &=
+ ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
he_cap_elem->phy_cap_info[5] &=
~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ_MASK;
- he_cap_elem->phy_cap_info[5] &=
- ~IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_ABOVE_80MHZ_MASK;
he_cap_elem->phy_cap_info[5] |= num_tx_chains - 1;

switch (iftype) {
@@ -5613,71 +5747,6 @@ static void ath12k_mac_setup_vdev_create_arg(struct ath12k_vif *arvif,
arg->if_stats_id = ath12k_mac_get_vdev_stats_id(arvif);
}

-static u32
-ath12k_mac_prepare_he_mode(struct ath12k_pdev *pdev, u32 viftype)
-{
- struct ath12k_pdev_cap *pdev_cap = &pdev->cap;
- struct ath12k_band_cap *cap_band = NULL;
- u32 *hecap_phy_ptr = NULL;
- u32 hemode;
-
- if (pdev->cap.supported_bands & WMI_HOST_WLAN_2G_CAP)
- cap_band = &pdev_cap->band[NL80211_BAND_2GHZ];
- else
- cap_band = &pdev_cap->band[NL80211_BAND_5GHZ];
-
- hecap_phy_ptr = &cap_band->he_cap_phy_info[0];
-
- hemode = u32_encode_bits(HE_SU_BFEE_ENABLE, HE_MODE_SU_TX_BFEE) |
- u32_encode_bits(HECAP_PHY_SUBFMR_GET(hecap_phy_ptr),
- HE_MODE_SU_TX_BFER) |
- u32_encode_bits(HECAP_PHY_ULMUMIMO_GET(hecap_phy_ptr),
- HE_MODE_UL_MUMIMO);
-
- /* TODO: WDS and other modes */
- if (viftype == NL80211_IFTYPE_AP) {
- hemode |= u32_encode_bits(HECAP_PHY_MUBFMR_GET(hecap_phy_ptr),
- HE_MODE_MU_TX_BFER) |
- u32_encode_bits(HE_DL_MUOFDMA_ENABLE, HE_MODE_DL_OFDMA) |
- u32_encode_bits(HE_UL_MUOFDMA_ENABLE, HE_MODE_UL_OFDMA);
- } else {
- hemode |= u32_encode_bits(HE_MU_BFEE_ENABLE, HE_MODE_MU_TX_BFEE);
- }
-
- return hemode;
-}
-
-static int ath12k_set_he_mu_sounding_mode(struct ath12k *ar,
- struct ath12k_vif *arvif)
-{
- u32 param_id, param_value;
- struct ath12k_base *ab = ar->ab;
- int ret;
-
- param_id = WMI_VDEV_PARAM_SET_HEMU_MODE;
- param_value = ath12k_mac_prepare_he_mode(ar->pdev, arvif->vif->type);
- ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- param_id, param_value);
- if (ret) {
- ath12k_warn(ab, "failed to set vdev %d HE MU mode: %d param_value %x\n",
- arvif->vdev_id, ret, param_value);
- return ret;
- }
- param_id = WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE;
- param_value =
- u32_encode_bits(HE_VHT_SOUNDING_MODE_ENABLE, HE_VHT_SOUNDING_MODE) |
- u32_encode_bits(HE_TRIG_NONTRIG_SOUNDING_MODE_ENABLE,
- HE_TRIG_NONTRIG_SOUNDING_MODE);
- ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- param_id, param_value);
- if (ret) {
- ath12k_warn(ab, "failed to set vdev %d HE MU mode: %d\n",
- arvif->vdev_id, ret);
- return ret;
- }
- return ret;
-}
-
static void ath12k_mac_update_vif_offload(struct ath12k_vif *arvif)
{
struct ieee80211_vif *vif = arvif->vif;
@@ -6342,7 +6411,6 @@ ath12k_mac_vdev_start_restart(struct ath12k_vif *arvif,
struct ath12k_base *ab = ar->ab;
struct wmi_vdev_start_req_arg arg = {};
const struct cfg80211_chan_def *chandef = &ctx->def;
- int he_support = arvif->vif->bss_conf.he_support;
int ret;

lockdep_assert_held(&ar->conf_mutex);
@@ -6392,14 +6460,6 @@ ath12k_mac_vdev_start_restart(struct ath12k_vif *arvif,
spin_unlock_bh(&ab->base_lock);

/* TODO: Notify if secondary 80Mhz also needs radar detection */
- if (he_support) {
- ret = ath12k_set_he_mu_sounding_mode(ar, arvif);
- if (ret) {
- ath12k_warn(ar->ab, "failed to set he mode vdev %i\n",
- arg.vdev_id);
- return ret;
- }
- }
}

arg.passive |= !!(chandef->chan->flags & IEEE80211_CHAN_NO_IR);
diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h
index 3f5e1be0dff9..bb3135e50751 100644
--- a/drivers/net/wireless/ath/ath12k/mac.h
+++ b/drivers/net/wireless/ath/ath12k/mac.h
@@ -40,6 +40,21 @@ struct ath12k_generic_iter {
#define ATH12K_TX_POWER_MAX_VAL 70
#define ATH12K_TX_POWER_MIN_VAL 0

+#define HECAP_PHY_SUBFMR_GET(hecap_phy) \
+ u8_get_bits(hecap_phy[3], IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER)
+
+#define HECAP_PHY_SUBFME_GET(hecap_phy) \
+ u8_get_bits(hecap_phy[4], IEEE80211_HE_PHY_CAP4_SU_BEAMFORMEE)
+
+#define HECAP_PHY_MUBFMR_GET(hecap_phy) \
+ u8_get_bits(hecap_phy[4], IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER)
+
+#define HECAP_PHY_ULMUMIMO_GET(hecap_phy) \
+ u8_get_bits(hecap_phy[2], IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO)
+
+#define HECAP_PHY_ULOFDMA_GET(hecap_phy) \
+ u8_get_bits(hecap_phy[2], IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO)
+
enum ath12k_supported_bw {
ATH12K_BW_20 = 0,
ATH12K_BW_40 = 1,
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 6a2da0739ac8..055b1d65bff0 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -2945,31 +2945,6 @@ struct ath12k_wmi_rx_reorder_queue_remove_arg {
#define WMI_VDEV_PARAM_TXBF_SU_TX_BFER BIT(2)
#define WMI_VDEV_PARAM_TXBF_MU_TX_BFER BIT(3)

-#define HECAP_PHYDWORD_0 0
-#define HECAP_PHYDWORD_1 1
-#define HECAP_PHYDWORD_2 2
-
-#define HECAP_PHY_SU_BFER BIT(31)
-#define HECAP_PHY_SU_BFEE BIT(0)
-#define HECAP_PHY_MU_BFER BIT(1)
-#define HECAP_PHY_UL_MUMIMO BIT(22)
-#define HECAP_PHY_UL_MUOFDMA BIT(23)
-
-#define HECAP_PHY_SUBFMR_GET(hecap_phy) \
- u32_get_bits(hecap_phy[HECAP_PHYDWORD_0], HECAP_PHY_SU_BFER)
-
-#define HECAP_PHY_SUBFME_GET(hecap_phy) \
- u32_get_bits(hecap_phy[HECAP_PHYDWORD_1], HECAP_PHY_SU_BFEE)
-
-#define HECAP_PHY_MUBFMR_GET(hecap_phy) \
- u32_get_bits(hecap_phy[HECAP_PHYDWORD_1], HECAP_PHY_MU_BFER)
-
-#define HECAP_PHY_ULMUMIMO_GET(hecap_phy) \
- u32_get_bits(hecap_phy[HECAP_PHYDWORD_0], HECAP_PHY_UL_MUMIMO)
-
-#define HECAP_PHY_ULOFDMA_GET(hecap_phy) \
- u32_get_bits(hecap_phy[HECAP_PHYDWORD_0], HECAP_PHY_UL_MUOFDMA)
-
#define HE_MODE_SU_TX_BFEE BIT(0)
#define HE_MODE_SU_TX_BFER BIT(1)
#define HE_MODE_MU_TX_BFEE BIT(2)
@@ -2981,8 +2956,11 @@ struct ath12k_wmi_rx_reorder_queue_remove_arg {
#define HE_DL_MUOFDMA_ENABLE 1
#define HE_UL_MUOFDMA_ENABLE 1
#define HE_DL_MUMIMO_ENABLE 1
+#define HE_UL_MUMIMO_ENABLE 1
#define HE_MU_BFEE_ENABLE 1
#define HE_SU_BFEE_ENABLE 1
+#define HE_MU_BFER_ENABLE 1
+#define HE_SU_BFER_ENABLE 1

#define HE_VHT_SOUNDING_MODE_ENABLE 1
#define HE_SU_MU_SOUNDING_MODE_ENABLE 1
--
2.17.1

2024-03-27 17:10:06

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 08/10] wifi: ath12k: clean up 80P80 support

Clean up unused 80P80 references as hardware does not support
it. This is applicable to both QCN9274 and WCN7850.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 51 ++++++---------------------
drivers/net/wireless/ath/ath12k/wmi.c | 5 +--
drivers/net/wireless/ath/ath12k/wmi.h | 1 -
3 files changed, 11 insertions(+), 46 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 72232285d2b1..51d3219ac3e6 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -198,7 +198,7 @@ ath12k_phymodes[NUM_NL80211_BANDS][ATH12K_CHAN_WIDTH_NUM] = {
[NL80211_CHAN_WIDTH_40] = MODE_11BE_EHT40,
[NL80211_CHAN_WIDTH_80] = MODE_11BE_EHT80,
[NL80211_CHAN_WIDTH_160] = MODE_11BE_EHT160,
- [NL80211_CHAN_WIDTH_80P80] = MODE_11BE_EHT80_80,
+ [NL80211_CHAN_WIDTH_80P80] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_320] = MODE_11BE_EHT320,
},
[NL80211_BAND_6GHZ] = {
@@ -209,7 +209,7 @@ ath12k_phymodes[NUM_NL80211_BANDS][ATH12K_CHAN_WIDTH_NUM] = {
[NL80211_CHAN_WIDTH_40] = MODE_11BE_EHT40,
[NL80211_CHAN_WIDTH_80] = MODE_11BE_EHT80,
[NL80211_CHAN_WIDTH_160] = MODE_11BE_EHT160,
- [NL80211_CHAN_WIDTH_80P80] = MODE_11BE_EHT80_80,
+ [NL80211_CHAN_WIDTH_80P80] = MODE_UNKNOWN,
[NL80211_CHAN_WIDTH_320] = MODE_11BE_EHT320,
},

@@ -2016,17 +2016,6 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,

switch (sta->deflink.bandwidth) {
case IEEE80211_STA_RX_BW_160:
- if (he_cap->he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
- v = ath12k_peer_assoc_h_he_limit(v, he_mcs_mask);
- arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;
-
- v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80p80);
- arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;
-
- arg->peer_he_mcs_count++;
- he_tx_mcs = v;
- }
v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;

@@ -2213,16 +2202,11 @@ static enum wmi_phy_mode ath12k_mac_get_phymode_vht(struct ath12k *ar,
struct ieee80211_sta *sta)
{
if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160) {
- switch (sta->deflink.vht_cap.cap &
- IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK) {
- case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ:
- return MODE_11AC_VHT160;
- case IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ:
- return MODE_11AC_VHT80_80;
- default:
- /* not sure if this is a valid case? */
+ if (sta->deflink.vht_cap.cap &
+ IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ)
return MODE_11AC_VHT160;
- }
+
+ return MODE_UNKNOWN;
}

if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
@@ -2244,11 +2228,8 @@ static enum wmi_phy_mode ath12k_mac_get_phymode_he(struct ath12k *ar,
if (sta->deflink.he_cap.he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
return MODE_11AX_HE160;
- else if (sta->deflink.he_cap.he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
- return MODE_11AX_HE80_80;
- /* not sure if this is a valid case? */
- return MODE_11AX_HE160;
+
+ return MODE_UNKNOWN;
}

if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
@@ -2276,14 +2257,7 @@ static enum wmi_phy_mode ath12k_mac_get_phymode_eht(struct ath12k *ar,
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
return MODE_11BE_EHT160;

- if (sta->deflink.he_cap.he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
- return MODE_11BE_EHT80_80;
-
- ath12k_warn(ar->ab, "invalid EHT PHY capability info for 160 Mhz: %d\n",
- sta->deflink.he_cap.he_cap_elem.phy_cap_info[0]);
-
- return MODE_11BE_EHT160;
+ return MODE_UNKNOWN;
}

if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
@@ -5165,8 +5139,6 @@ static void ath12k_mac_set_hemcsmap(struct ath12k *ar,
mcs_nss->tx_mcs_80 = cpu_to_le16(txmcs_map & 0xffff);
mcs_nss->rx_mcs_160 = cpu_to_le16(rxmcs_map & 0xffff);
mcs_nss->tx_mcs_160 = cpu_to_le16(txmcs_map & 0xffff);
- mcs_nss->rx_mcs_80p80 = cpu_to_le16(rxmcs_map & 0xffff);
- mcs_nss->tx_mcs_80p80 = cpu_to_le16(txmcs_map & 0xffff);
}

static void ath12k_mac_copy_he_cap(struct ath12k *ar,
@@ -5188,6 +5160,7 @@ static void ath12k_mac_copy_he_cap(struct ath12k *ar,
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_IN_2G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
+ /* 80PLUS80 is not supported */
he_cap_elem->phy_cap_info[0] &=
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
he_cap_elem->phy_cap_info[5] &=
@@ -7382,10 +7355,6 @@ ath12k_mac_has_single_legacy_rate(struct ath12k *ar,
static __le16
ath12k_mac_get_tx_mcs_map(const struct ieee80211_sta_he_cap *he_cap)
{
- if (he_cap->he_cap_elem.phy_cap_info[0] &
- IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
- return he_cap->he_mcs_nss_supp.tx_mcs_80p80;
-
if (he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
return he_cap->he_mcs_nss_supp.tx_mcs_160;
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index c550ced42084..2e6a45225228 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -978,10 +978,7 @@ static void ath12k_wmi_put_wmi_channel(struct ath12k_wmi_channel_params *chan,

chan->mhz = cpu_to_le32(arg->freq);
chan->band_center_freq1 = cpu_to_le32(arg->band_center_freq1);
- if (arg->mode == MODE_11AC_VHT80_80)
- chan->band_center_freq2 = cpu_to_le32(arg->band_center_freq2);
- else
- chan->band_center_freq2 = 0;
+ chan->band_center_freq2 = 0;

chan->info |= le32_encode_bits(arg->mode, WMI_CHAN_INFO_MODE);
if (arg->passive)
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index ee90345431f2..00871d6be3ea 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -3567,7 +3567,6 @@ struct wmi_vdev_install_key_arg {
#define WMI_HOST_MAX_HE_RATE_SET 3
#define WMI_HECAP_TXRX_MCS_NSS_IDX_80 0
#define WMI_HECAP_TXRX_MCS_NSS_IDX_160 1
-#define WMI_HECAP_TXRX_MCS_NSS_IDX_80_80 2

struct wmi_rate_set_arg {
u32 num_rates;
--
2.17.1

2024-03-27 17:10:06

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 07/10] wifi: ath12k: add support for setting fixed HE rate/GI/LTF

Add support to set fixed HE rate/GI/LTF values using nl80211.
Reuse parts of the existing code path already used for HT/VHT
to implement the new helpers symmetrically, similar to how
HT/VHT is handled.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: Muna Sinada <[email protected]>
Signed-off-by: Muna Sinada <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 588 ++++++++++++++++++++++++--
drivers/net/wireless/ath/ath12k/wmi.h | 18 +
2 files changed, 562 insertions(+), 44 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 46ef2d63a3de..72232285d2b1 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -430,6 +430,18 @@ ath12k_mac_max_vht_nss(const u16 *vht_mcs_mask)
return 1;
}

+static u32
+ath12k_mac_max_he_nss(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+ int nss;
+
+ for (nss = NL80211_HE_NSS_MAX - 1; nss >= 0; nss--)
+ if (he_mcs_mask[nss])
+ return nss + 1;
+
+ return 1;
+}
+
static u8 ath12k_parse_mpdudensity(u8 mpdudensity)
{
/* From IEEE Std 802.11-2020 defined values for "Minimum MPDU Start Spacing":
@@ -1543,6 +1555,14 @@ static void ath12k_peer_assoc_h_ht(struct ath12k *ar,
arg->peer_rate_caps |= WMI_HOST_RC_CW40_FLAG;
}

+ /* As firmware handles these two flags (IEEE80211_HT_CAP_SGI_20
+ * and IEEE80211_HT_CAP_SGI_40) for enabling SGI, reset both
+ * flags if guard interval is Default GI
+ */
+ if (arvif->bitrate_mask.control[band].gi == NL80211_TXRATE_DEFAULT_GI)
+ arg->peer_ht_caps &= ~(IEEE80211_HT_CAP_SGI_20 |
+ IEEE80211_HT_CAP_SGI_40);
+
if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) {
if (ht_cap->cap & (IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40))
@@ -1666,11 +1686,12 @@ static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
struct cfg80211_chan_def def;
enum nl80211_band band;
- const u16 *vht_mcs_mask;
+ u16 *vht_mcs_mask;
u16 tx_mcs_map;
u8 ampdu_factor;
u8 max_nss, vht_mcs;
- int i;
+ int i, vht_nss, nss_idx;
+ bool user_rate_valid = true;

if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
return;
@@ -1713,6 +1734,25 @@ static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160)
arg->bw_160 = true;

+ vht_nss = ath12k_mac_max_vht_nss(vht_mcs_mask);
+
+ if (vht_nss > sta->deflink.rx_nss) {
+ user_rate_valid = false;
+ for (nss_idx = sta->deflink.rx_nss - 1; nss_idx >= 0; nss_idx--) {
+ if (vht_mcs_mask[nss_idx]) {
+ user_rate_valid = true;
+ break;
+ }
+ }
+ }
+
+ if (!user_rate_valid) {
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "Setting vht range MCS value to peer supported nss:%d for peer %pM\n",
+ sta->deflink.rx_nss, sta->deflink.addr);
+ vht_mcs_mask[sta->deflink.rx_nss - 1] = vht_mcs_mask[vht_nss - 1];
+ }
+
/* Calculate peer NSS capability from VHT capabilities if STA
* supports VHT.
*/
@@ -1752,21 +1792,103 @@ static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
/* TODO: rxnss_override */
}

+static int ath12k_mac_get_max_he_mcs_map(u16 mcs_map, int nss)
+{
+ switch ((mcs_map >> (2 * nss)) & 0x3) {
+ case IEEE80211_HE_MCS_SUPPORT_0_7: return BIT(8) - 1;
+ case IEEE80211_HE_MCS_SUPPORT_0_9: return BIT(10) - 1;
+ case IEEE80211_HE_MCS_SUPPORT_0_11: return BIT(12) - 1;
+ }
+ return 0;
+}
+
+static u16 ath12k_peer_assoc_h_he_limit(u16 tx_mcs_set,
+ const u16 he_mcs_limit[NL80211_HE_NSS_MAX])
+{
+ int idx_limit;
+ int nss;
+ u16 mcs_map;
+ u16 mcs;
+
+ for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
+ mcs_map = ath12k_mac_get_max_he_mcs_map(tx_mcs_set, nss) &
+ he_mcs_limit[nss];
+
+ if (mcs_map)
+ idx_limit = fls(mcs_map) - 1;
+ else
+ idx_limit = -1;
+
+ switch (idx_limit) {
+ case 0 ... 7:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_7;
+ break;
+ case 8:
+ case 9:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_9;
+ break;
+ case 10:
+ case 11:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_11;
+ break;
+ default:
+ WARN_ON(1);
+ fallthrough;
+ case -1:
+ mcs = IEEE80211_HE_MCS_NOT_SUPPORTED;
+ break;
+ }
+
+ tx_mcs_set &= ~(0x3 << (nss * 2));
+ tx_mcs_set |= mcs << (nss * 2);
+ }
+
+ return tx_mcs_set;
+}
+
+static bool
+ath12k_peer_assoc_h_he_masked(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+ int nss;
+
+ for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++)
+ if (he_mcs_mask[nss])
+ return false;
+
+ return true;
+}
+
static void ath12k_peer_assoc_h_he(struct ath12k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ath12k_wmi_peer_assoc_arg *arg)
{
const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+ struct ath12k_vif *arvif = ath12k_vif_to_arvif(vif);
+ struct cfg80211_chan_def def;
int i;
u8 ampdu_factor, rx_mcs_80, rx_mcs_160, max_nss;
u16 mcs_160_map, mcs_80_map;
bool support_160;
- u16 v;
+ enum nl80211_band band;
+ u16 *he_mcs_mask;
+ u8 he_mcs;
+ u16 he_tx_mcs = 0, v = 0;
+ int he_nss, nss_idx;
+ bool user_rate_valid = true;
+
+ if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
+ return;

if (!he_cap->has_he)
return;

+ band = def.chan->band;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;
+
+ if (ath12k_peer_assoc_h_he_masked(he_mcs_mask))
+ return;
+
arg->he_flag = true;

support_160 = !!(he_cap->he_cap_elem.phy_cap_info[0] &
@@ -1873,25 +1995,47 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
if (he_cap->he_cap_elem.mac_cap_info[0] & IEEE80211_HE_MAC_CAP0_TWT_REQ)
arg->twt_requester = true;

+ he_nss = ath12k_mac_max_he_nss(he_mcs_mask);
+
+ if (he_nss > sta->deflink.rx_nss) {
+ user_rate_valid = false;
+ for (nss_idx = sta->deflink.rx_nss - 1; nss_idx >= 0; nss_idx--) {
+ if (he_mcs_mask[nss_idx]) {
+ user_rate_valid = true;
+ break;
+ }
+ }
+ }
+
+ if (!user_rate_valid) {
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "Setting he range MCS value to peer supported nss:%d for peer %pM\n",
+ sta->deflink.rx_nss, sta->deflink.addr);
+ he_mcs_mask[sta->deflink.rx_nss - 1] = he_mcs_mask[he_nss - 1];
+ }
+
switch (sta->deflink.bandwidth) {
case IEEE80211_STA_RX_BW_160:
if (he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
- v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80p80);
+ v = ath12k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;

v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80p80);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;

arg->peer_he_mcs_count++;
+ he_tx_mcs = v;
}
v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;

- v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_160);
+ v = ath12k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;

arg->peer_he_mcs_count++;
+ if (!he_tx_mcs)
+ he_tx_mcs = v;
fallthrough;

default:
@@ -1899,11 +2043,34 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;

v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
+ v = ath12k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;

arg->peer_he_mcs_count++;
+ if (!he_tx_mcs)
+ he_tx_mcs = v;
break;
}
+
+ /* Calculate peer NSS capability from HE capabilities if STA
+ * supports HE.
+ */
+ for (i = 0, max_nss = 0, he_mcs = 0; i < NL80211_HE_NSS_MAX; i++) {
+ he_mcs = he_tx_mcs >> (2 * i) & 3;
+
+ /* In case of fixed rates, MCS Range in he_tx_mcs might have
+ * unsupported range, with he_mcs_mask set, so check either of them
+ * to find nss.
+ */
+ if (he_mcs != IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ he_mcs_mask[i])
+ max_nss = i + 1;
+ }
+ arg->peer_nss = min(sta->deflink.rx_nss, max_nss);
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "mac he peer %pM nss %d mcs cnt %d\n",
+ sta->deflink.addr, arg->peer_nss, arg->peer_he_mcs_count);
}

static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
@@ -2141,6 +2308,7 @@ static void ath12k_peer_assoc_h_phymode(struct ath12k *ar,
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
enum wmi_phy_mode phymode = MODE_UNKNOWN;

if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
@@ -2149,6 +2317,7 @@ static void ath12k_peer_assoc_h_phymode(struct ath12k *ar,
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;

switch (band) {
case NL80211_BAND_2GHZ:
@@ -2157,7 +2326,8 @@ static void ath12k_peer_assoc_h_phymode(struct ath12k *ar,
phymode = MODE_11BE_EHT40_2G;
else
phymode = MODE_11BE_EHT20_2G;
- } else if (sta->deflink.he_cap.has_he) {
+ } else if (sta->deflink.he_cap.has_he &&
+ !ath12k_peer_assoc_h_he_masked(he_mcs_mask)) {
if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_80)
phymode = MODE_11AX_HE80_2G;
else if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_40)
@@ -2187,7 +2357,8 @@ static void ath12k_peer_assoc_h_phymode(struct ath12k *ar,
/* Check EHT first */
if (sta->deflink.eht_cap.has_eht) {
phymode = ath12k_mac_get_phymode_eht(ar, sta);
- } else if (sta->deflink.he_cap.has_he) {
+ } else if (sta->deflink.he_cap.has_he &&
+ !ath12k_peer_assoc_h_he_masked(he_mcs_mask)) {
phymode = ath12k_mac_get_phymode_he(ar, sta);
} else if (sta->deflink.vht_cap.vht_supported &&
!ath12k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
@@ -3691,6 +3862,20 @@ ath12k_mac_bitrate_mask_num_vht_rates(struct ath12k *ar,
return num_rates;
}

+static int
+ath12k_mac_bitrate_mask_num_he_rates(struct ath12k *ar,
+ enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ int num_rates = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++)
+ num_rates += hweight16(mask->control[band].he_mcs[i]);
+
+ return num_rates;
+}
+
static int
ath12k_mac_set_peer_vht_fixed_rate(struct ath12k_vif *arvif,
struct ieee80211_sta *sta,
@@ -3737,6 +3922,57 @@ ath12k_mac_set_peer_vht_fixed_rate(struct ath12k_vif *arvif,
return ret;
}

+static int
+ath12k_mac_set_peer_he_fixed_rate(struct ath12k_vif *arvif,
+ struct ieee80211_sta *sta,
+ const struct cfg80211_bitrate_mask *mask,
+ enum nl80211_band band)
+{
+ struct ath12k *ar = arvif->ar;
+ u8 he_rate, nss;
+ u32 rate_code;
+ int ret, i;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ nss = 0;
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+ if (hweight16(mask->control[band].he_mcs[i]) == 1) {
+ nss = i + 1;
+ he_rate = ffs(mask->control[band].he_mcs[i]) - 1;
+ }
+ }
+
+ if (!nss) {
+ ath12k_warn(ar->ab, "No single HE Fixed rate found to set for %pM",
+ sta->deflink.addr);
+ return -EINVAL;
+ }
+
+ /* Avoid updating invalid nss as fixed rate*/
+ if (nss > sta->deflink.rx_nss)
+ return -EINVAL;
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "Setting Fixed HE Rate for peer %pM. Device will not switch to any other selected rates",
+ sta->deflink.addr);
+
+ rate_code = ATH12K_HW_RATE_CODE(he_rate, nss - 1,
+ WMI_RATE_PREAMBLE_HE);
+
+ ret = ath12k_wmi_set_peer_param(ar, sta->deflink.addr,
+ arvif->vdev_id,
+ WMI_PEER_PARAM_FIXED_RATE,
+ rate_code);
+ if (ret)
+ ath12k_warn(ar->ab,
+ "failed to update STA %pM Fixed Rate %d: %d\n",
+ sta->deflink.addr, rate_code, ret);
+
+ return ret;
+}
+
static int ath12k_station_assoc(struct ath12k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -3748,7 +3984,7 @@ static int ath12k_station_assoc(struct ath12k *ar,
struct cfg80211_chan_def def;
enum nl80211_band band;
struct cfg80211_bitrate_mask *mask;
- u8 num_vht_rates;
+ u8 num_vht_rates, num_he_rates;

lockdep_assert_held(&ar->conf_mutex);

@@ -3774,15 +4010,19 @@ static int ath12k_station_assoc(struct ath12k *ar,
}

num_vht_rates = ath12k_mac_bitrate_mask_num_vht_rates(ar, band, mask);
+ num_he_rates = ath12k_mac_bitrate_mask_num_he_rates(ar, band, mask);

- /* If single VHT rate is configured (by set_bitrate_mask()),
- * peer_assoc will disable VHT. This is now enabled by a peer specific
+ /* If single VHT/HE rate is configured (by set_bitrate_mask()),
+ * peer_assoc will disable VHT/HE. This is now enabled by a peer specific
* fixed param.
* Note that all other rates and NSS will be disabled for this peer.
*/
if (sta->deflink.vht_cap.vht_supported && num_vht_rates == 1) {
- ret = ath12k_mac_set_peer_vht_fixed_rate(arvif, sta, mask,
- band);
+ ret = ath12k_mac_set_peer_vht_fixed_rate(arvif, sta, mask, band);
+ if (ret)
+ return ret;
+ } else if (sta->deflink.he_cap.has_he && num_he_rates == 1) {
+ ret = ath12k_mac_set_peer_he_fixed_rate(arvif, sta, mask, band);
if (ret)
return ret;
}
@@ -3855,8 +4095,9 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
u32 changed, bw, nss, smps, bw_prev;
- int err, num_vht_rates;
+ int err, num_vht_rates, num_he_rates;
const struct cfg80211_bitrate_mask *mask;
struct ath12k_wmi_peer_assoc_arg peer_arg;
enum wmi_phy_mode peer_phymode;
@@ -3872,6 +4113,7 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;

spin_lock_bh(&ar->data_lock);

@@ -3888,8 +4130,9 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
mutex_lock(&ar->conf_mutex);

nss = max_t(u32, 1, nss);
- nss = min(nss, max(ath12k_mac_max_ht_nss(ht_mcs_mask),
- ath12k_mac_max_vht_nss(vht_mcs_mask)));
+ nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
+ ath12k_mac_max_vht_nss(vht_mcs_mask),
+ ath12k_mac_max_he_nss(he_mcs_mask)));

if (changed & IEEE80211_RC_BW_CHANGED) {
ath12k_peer_assoc_h_phymode(ar, arvif->vif, sta, &peer_arg);
@@ -3967,6 +4210,8 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
mask = &arvif->bitrate_mask;
num_vht_rates = ath12k_mac_bitrate_mask_num_vht_rates(ar, band,
mask);
+ num_he_rates = ath12k_mac_bitrate_mask_num_he_rates(ar, band,
+ mask);

/* Peer_assoc_prepare will reject vht rates in
* bitrate_mask if its not available in range format and
@@ -3982,11 +4227,24 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
if (sta->deflink.vht_cap.vht_supported && num_vht_rates == 1) {
ath12k_mac_set_peer_vht_fixed_rate(arvif, sta, mask,
band);
+ } else if (sta->deflink.he_cap.has_he && num_he_rates == 1) {
+ ath12k_mac_set_peer_he_fixed_rate(arvif, sta, mask, band);
} else {
- /* If the peer is non-VHT or no fixed VHT rate
+ /* If the peer is non-VHT/HE or no fixed VHT/HE rate
* is provided in the new bitrate mask we set the
- * other rates using peer_assoc command.
+ * other rates using peer_assoc command. Also clear
+ * the peer fixed rate settings as it has higher proprity
+ * than peer assoc
*/
+
+ err = ath12k_wmi_set_peer_param(ar, sta->deflink.addr,
+ arvif->vdev_id,
+ WMI_PEER_PARAM_FIXED_RATE,
+ WMI_FIXED_RATE_NONE);
+ if (err)
+ ath12k_warn(ar->ab,
+ "failed to disable peer fixed rate for STA %pM ret %d\n",
+ sta->deflink.addr, err);
ath12k_peer_assoc_prepare(ar, arvif->vif, sta,
&peer_arg, true);

@@ -5926,10 +6184,13 @@ static int ath12k_mac_op_add_interface(struct ieee80211_hw *hw,

for (i = 0; i < ARRAY_SIZE(arvif->bitrate_mask.control); i++) {
arvif->bitrate_mask.control[i].legacy = 0xffffffff;
+ arvif->bitrate_mask.control[i].gi = NL80211_TXRATE_FORCE_SGI;
memset(arvif->bitrate_mask.control[i].ht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].ht_mcs));
memset(arvif->bitrate_mask.control[i].vht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].vht_mcs));
+ memset(arvif->bitrate_mask.control[i].he_mcs, 0xff,
+ sizeof(arvif->bitrate_mask.control[i].he_mcs));
}

bit = __ffs64(ab->free_vdev_map);
@@ -7112,9 +7373,26 @@ ath12k_mac_has_single_legacy_rate(struct ath12k *ar,
if (ath12k_mac_bitrate_mask_num_vht_rates(ar, band, mask))
return false;

+ if (ath12k_mac_bitrate_mask_num_he_rates(ar, band, mask))
+ return false;
+
return num_rates == 1;
}

+static __le16
+ath12k_mac_get_tx_mcs_map(const struct ieee80211_sta_he_cap *he_cap)
+{
+ if (he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
+ return he_cap->he_mcs_nss_supp.tx_mcs_80p80;
+
+ if (he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
+ return he_cap->he_mcs_nss_supp.tx_mcs_160;
+
+ return he_cap->he_mcs_nss_supp.tx_mcs_80;
+}
+
static bool
ath12k_mac_bitrate_mask_get_single_nss(struct ath12k *ar,
enum nl80211_band band,
@@ -7123,8 +7401,10 @@ ath12k_mac_bitrate_mask_get_single_nss(struct ath12k *ar,
{
struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
+ u16 he_mcs_map = 0;
u8 ht_nss_mask = 0;
u8 vht_nss_mask = 0;
+ u8 he_nss_mask = 0;
int i;

/* No need to consider legacy here. Basic rates are always present
@@ -7151,7 +7431,20 @@ ath12k_mac_bitrate_mask_get_single_nss(struct ath12k *ar,
return false;
}

- if (ht_nss_mask != vht_nss_mask)
+ he_mcs_map = le16_to_cpu(ath12k_mac_get_tx_mcs_map(&sband->iftype_data->he_cap));
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+ if (mask->control[band].he_mcs[i] == 0)
+ continue;
+
+ if (mask->control[band].he_mcs[i] ==
+ ath12k_mac_get_max_he_mcs_map(he_mcs_map, i))
+ he_nss_mask |= BIT(i);
+ else
+ return false;
+ }
+
+ if (ht_nss_mask != vht_nss_mask || ht_nss_mask != he_nss_mask)
return false;

if (ht_nss_mask == 0)
@@ -7198,54 +7491,158 @@ ath12k_mac_get_single_legacy_rate(struct ath12k *ar,
return 0;
}

-static int ath12k_mac_set_fixed_rate_params(struct ath12k_vif *arvif,
- u32 rate, u8 nss, u8 sgi, u8 ldpc)
+static int
+ath12k_mac_set_fixed_rate_gi_ltf(struct ath12k_vif *arvif, u8 he_gi, u8 he_ltf)
{
struct ath12k *ar = arvif->ar;
- u32 vdev_param;
int ret;

- lockdep_assert_held(&ar->conf_mutex);
+ /* 0.8 = 0, 1.6 = 2 and 3.2 = 3. */
+ if (he_gi && he_gi != 0xFF)
+ he_gi += 1;

- ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac set fixed rate params vdev %i rate 0x%02x nss %u sgi %u\n",
- arvif->vdev_id, rate, nss, sgi);
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ WMI_VDEV_PARAM_SGI, he_gi);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set HE GI:%d, error:%d\n",
+ he_gi, ret);
+ return ret;
+ }
+ /* start from 1 */
+ if (he_ltf != 0xFF)
+ he_ltf += 1;

- vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, rate);
+ WMI_VDEV_PARAM_HE_LTF, he_ltf);
if (ret) {
- ath12k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
- rate, ret);
+ ath12k_warn(ar->ab, "failed to set HE LTF:%d, error:%d\n",
+ he_ltf, ret);
return ret;
}
+ return 0;
+}
+
+static int
+ath12k_mac_set_auto_rate_gi_ltf(struct ath12k_vif *arvif, u16 he_gi, u8 he_ltf)
+{
+ struct ath12k *ar = arvif->ar;
+ int ret;
+ u32 he_ar_gi_ltf;
+
+ if (he_gi != 0xFF) {
+ switch (he_gi) {
+ case NL80211_RATE_INFO_HE_GI_0_8:
+ he_gi = WMI_AUTORATE_800NS_GI;
+ break;
+ case NL80211_RATE_INFO_HE_GI_1_6:
+ he_gi = WMI_AUTORATE_1600NS_GI;
+ break;
+ case NL80211_RATE_INFO_HE_GI_3_2:
+ he_gi = WMI_AUTORATE_3200NS_GI;
+ break;
+ default:
+ ath12k_warn(ar->ab, "Invalid GI\n");
+ return -EINVAL;
+ }
+ }
+
+ if (he_ltf != 0xFF) {
+ switch (he_ltf) {
+ case NL80211_RATE_INFO_HE_1XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_1X;
+ break;
+ case NL80211_RATE_INFO_HE_2XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_2X;
+ break;
+ case NL80211_RATE_INFO_HE_4XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_4X;
+ break;
+ default:
+ ath12k_warn(ar->ab, "Invalid LTF\n");
+ return -EINVAL;
+ }
+ }
+
+ he_ar_gi_ltf = he_gi | he_ltf;

- vdev_param = WMI_VDEV_PARAM_NSS;
ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, nss);
+ WMI_VDEV_PARAM_AUTORATE_MISC_CFG,
+ he_ar_gi_ltf);
if (ret) {
- ath12k_warn(ar->ab, "failed to set nss param %d: %d\n",
- nss, ret);
+ ath12k_warn(ar->ab,
+ "failed to set HE autorate GI:%u, LTF:%u params, error:%d\n",
+ he_gi, he_ltf, ret);
return ret;
}

- vdev_param = WMI_VDEV_PARAM_SGI;
+ return 0;
+}
+
+static int ath12k_mac_set_rate_params(struct ath12k_vif *arvif,
+ u32 rate, u8 nss, u8 sgi, u8 ldpc,
+ u8 he_gi, u8 he_ltf, bool he_fixed_rate)
+{
+ struct ath12k *ar = arvif->ar;
+ u32 vdev_param;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "mac set rate params vdev %i rate 0x%02x nss 0x%02x sgi 0x%02x ldpc 0x%02x\n",
+ arvif->vdev_id, rate, nss, sgi, ldpc);
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "he_gi 0x%02x he_ltf 0x%02x he_fixed_rate %d\n", he_gi,
+ he_ltf, he_fixed_rate);
+
+ if (!arvif->vif->bss_conf.he_support) {
+ vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ vdev_param, rate);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
+ rate, ret);
+ return ret;
+ }
+ }
+
+ vdev_param = WMI_VDEV_PARAM_NSS;
+
ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, sgi);
+ vdev_param, nss);
if (ret) {
- ath12k_warn(ar->ab, "failed to set sgi param %d: %d\n",
- sgi, ret);
+ ath12k_warn(ar->ab, "failed to set nss param %d: %d\n",
+ nss, ret);
return ret;
}

- vdev_param = WMI_VDEV_PARAM_LDPC;
ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, ldpc);
+ WMI_VDEV_PARAM_LDPC, ldpc);
if (ret) {
ath12k_warn(ar->ab, "failed to set ldpc param %d: %d\n",
ldpc, ret);
return ret;
}

+ if (arvif->vif->bss_conf.he_support) {
+ if (he_fixed_rate)
+ ret = ath12k_mac_set_fixed_rate_gi_ltf(arvif, he_gi, he_ltf);
+ else
+ ret = ath12k_mac_set_auto_rate_gi_ltf(arvif, he_gi, he_ltf);
+ if (ret)
+ return ret;
+ } else {
+ vdev_param = WMI_VDEV_PARAM_SGI;
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ vdev_param, sgi);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set sgi param %d: %d\n",
+ sgi, ret);
+ return ret;
+ }
+ }
+
return 0;
}

@@ -7274,6 +7671,31 @@ ath12k_mac_vht_mcs_range_present(struct ath12k *ar,
return true;
}

+static bool
+ath12k_mac_he_mcs_range_present(struct ath12k *ar,
+ enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ int i;
+ u16 he_mcs;
+
+ for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
+ he_mcs = mask->control[band].he_mcs[i];
+
+ switch (he_mcs) {
+ case 0:
+ case BIT(8) - 1:
+ case BIT(10) - 1:
+ case BIT(12) - 1:
+ break;
+ default:
+ return false;
+ }
+ }
+
+ return true;
+}
+
static void ath12k_mac_set_bitrate_mask_iter(void *data,
struct ieee80211_sta *sta)
{
@@ -7305,6 +7727,54 @@ static void ath12k_mac_disable_peer_fixed_rate(void *data,
sta->addr, ret);
}

+static int
+ath12k_mac_validate_vht_he_fixed_rate_settings(struct ath12k *ar, enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ bool he_fixed_rate = false, vht_fixed_rate = false;
+ struct ath12k_peer *peer;
+ const u16 *vht_mcs_mask, *he_mcs_mask;
+ u8 vht_nss, he_nss;
+ int ret = 0;
+
+ vht_mcs_mask = mask->control[band].vht_mcs;
+ he_mcs_mask = mask->control[band].he_mcs;
+
+ if (ath12k_mac_bitrate_mask_num_vht_rates(ar, band, mask) == 1)
+ vht_fixed_rate = true;
+
+ if (ath12k_mac_bitrate_mask_num_he_rates(ar, band, mask) == 1)
+ he_fixed_rate = true;
+
+ if (!vht_fixed_rate && !he_fixed_rate)
+ return 0;
+
+ vht_nss = ath12k_mac_max_vht_nss(vht_mcs_mask);
+ he_nss = ath12k_mac_max_he_nss(he_mcs_mask);
+
+ rcu_read_lock();
+ spin_lock_bh(&ar->ab->base_lock);
+ list_for_each_entry(peer, &ar->ab->peers, list) {
+ if (peer->sta) {
+ if (vht_fixed_rate &&
+ (!peer->sta->deflink.vht_cap.vht_supported ||
+ peer->sta->deflink.rx_nss < vht_nss)) {
+ ret = -EINVAL;
+ goto exit;
+ }
+ if (he_fixed_rate && (!peer->sta->deflink.he_cap.has_he ||
+ peer->sta->deflink.rx_nss < he_nss)) {
+ ret = -EINVAL;
+ goto exit;
+ }
+ }
+ }
+exit:
+ spin_unlock_bh(&ar->ab->base_lock);
+ rcu_read_unlock();
+ return ret;
+}
+
static int
ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
@@ -7316,6 +7786,9 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
+ u8 he_ltf = 0;
+ u8 he_gi = 0;
u32 rate;
u8 nss;
u8 sgi;
@@ -7323,6 +7796,7 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
int single_nss;
int ret;
int num_rates;
+ bool he_fixed_rate = false;

if (ath12k_mac_vif_chan(vif, &def))
return -EPERM;
@@ -7330,6 +7804,7 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
band = def.chan->band;
ht_mcs_mask = mask->control[band].ht_mcs;
vht_mcs_mask = mask->control[band].vht_mcs;
+ he_mcs_mask = mask->control[band].he_mcs;
ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);

sgi = mask->control[band].gi;
@@ -7338,6 +7813,9 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
goto out;
}

+ he_gi = mask->control[band].he_gi;
+ he_ltf = mask->control[band].he_ltf;
+
/* mac80211 doesn't support sending a fixed HT/VHT MCS alone, rather it
* requires passing at least one of used basic rates along with them.
* Fixed rate setting across different preambles(legacy, HT, VHT) is
@@ -7361,11 +7839,22 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
&single_nss)) {
rate = WMI_FIXED_RATE_NONE;
nss = single_nss;
+ mutex_lock(&ar->conf_mutex);
+ arvif->bitrate_mask = *mask;
+ ieee80211_iterate_stations_atomic(hw,
+ ath12k_mac_set_bitrate_mask_iter,
+ arvif);
+ mutex_unlock(&ar->conf_mutex);
} else {
rate = WMI_FIXED_RATE_NONE;
+
+ if (!ath12k_mac_validate_vht_he_fixed_rate_settings(ar, band, mask))
+ ath12k_warn(ar->ab,
+ "could not update fixed rate settings to all peers due to mcs/nss incompatiblity\n");
nss = min_t(u32, ar->num_tx_chains,
- max(ath12k_mac_max_ht_nss(ht_mcs_mask),
- ath12k_mac_max_vht_nss(vht_mcs_mask)));
+ max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
+ ath12k_mac_max_vht_nss(vht_mcs_mask),
+ ath12k_mac_max_he_nss(he_mcs_mask)));

/* If multiple rates across different preambles are given
* we can reconfigure this info with all peers using PEER_ASSOC
@@ -7401,12 +7890,22 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
goto out;
}

+ num_rates = ath12k_mac_bitrate_mask_num_he_rates(ar, band, mask);
+ if (num_rates == 1)
+ he_fixed_rate = true;
+
+ if (!ath12k_mac_he_mcs_range_present(ar, band, mask) &&
+ num_rates > 1) {
+ ath12k_warn(ar->ab,
+ "Setting more than one HE MCS Value in bitrate mask not supported\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&ar->conf_mutex);
ieee80211_iterate_stations_atomic(hw,
ath12k_mac_disable_peer_fixed_rate,
arvif);

- mutex_lock(&ar->conf_mutex);
-
arvif->bitrate_mask = *mask;
ieee80211_iterate_stations_atomic(hw,
ath12k_mac_set_bitrate_mask_iter,
@@ -7417,9 +7916,10 @@ ath12k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,

mutex_lock(&ar->conf_mutex);

- ret = ath12k_mac_set_fixed_rate_params(arvif, rate, nss, sgi, ldpc);
+ ret = ath12k_mac_set_rate_params(arvif, rate, nss, sgi, ldpc, he_gi,
+ he_ltf, he_fixed_rate);
if (ret) {
- ath12k_warn(ar->ab, "failed to set fixed rate params on vdev %i: %d\n",
+ ath12k_warn(ar->ab, "failed to set rate params on vdev %i: %d\n",
arvif->vdev_id, ret);
}

diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index cf273298227d..ee90345431f2 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -219,6 +219,22 @@ enum WMI_HOST_WLAN_BAND {
WMI_HOST_WLAN_2G_5G_CAP = 3,
};

+/* Parameters used for WMI_VDEV_PARAM_AUTORATE_MISC_CFG command.
+ * Used only for HE auto rate mode.
+ */
+enum {
+ /* HE LTF related configuration */
+ WMI_HE_AUTORATE_LTF_1X = BIT(0),
+ WMI_HE_AUTORATE_LTF_2X = BIT(1),
+ WMI_HE_AUTORATE_LTF_4X = BIT(2),
+
+ /* HE GI related configuration */
+ WMI_AUTORATE_400NS_GI = BIT(8),
+ WMI_AUTORATE_800NS_GI = BIT(9),
+ WMI_AUTORATE_1600NS_GI = BIT(10),
+ WMI_AUTORATE_3200NS_GI = BIT(11),
+};
+
enum wmi_cmd_group {
/* 0 to 2 are reserved */
WMI_GRP_START = 0x3,
@@ -1128,7 +1144,9 @@ enum wmi_tlv_vdev_param {
WMI_VDEV_PARAM_HE_RANGE_EXT,
WMI_VDEV_PARAM_ENABLE_BCAST_PROBE_RESPONSE,
WMI_VDEV_PARAM_FILS_MAX_CHANNEL_GUARD_TIME,
+ WMI_VDEV_PARAM_HE_LTF = 0x74,
WMI_VDEV_PARAM_BA_MODE = 0x7e,
+ WMI_VDEV_PARAM_AUTORATE_MISC_CFG = 0x80,
WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE = 0x87,
WMI_VDEV_PARAM_6GHZ_PARAMS = 0x99,
WMI_VDEV_PARAM_PROTOTYPE = 0x8000,
--
2.17.1

2024-03-27 17:10:10

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 09/10] wifi: ath12k: add support for 160 MHz bandwidth

Add support to configure maximum NSS in 160 MHz bandwidth.
Firmware advertizes support for handling NSS ratio information
as a part of service ready ext event using nss_ratio_enabled
flag. Save this information in ath12k_pdev_cap to calculate
NSS ratio.

Additionally, reorder the code by moving
ath12k_peer_assoc_h_phymode() before ath12k_peer_assoc_h_vht()
to ensure that arg->peer_phymode correctly reflects the bandwidth
in the max NSS calculation.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: P Praneesh <[email protected]>
Signed-off-by: P Praneesh <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/core.h | 2 +
drivers/net/wireless/ath/ath12k/mac.c | 85 ++++++++++++++++++++++----
drivers/net/wireless/ath/ath12k/mac.h | 2 +
drivers/net/wireless/ath/ath12k/wmi.c | 19 +++++-
drivers/net/wireless/ath/ath12k/wmi.h | 28 +++++++++
5 files changed, 124 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 97e5a0ccd233..716982336c75 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -637,6 +637,8 @@ struct ath12k_pdev_cap {
u32 tx_chain_mask_shift;
u32 rx_chain_mask_shift;
struct ath12k_band_cap band[NUM_NL80211_BANDS];
+ bool nss_ratio_enabled;
+ u8 nss_ratio_info;
};

struct mlo_timestamp {
diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 51d3219ac3e6..92b597697603 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -1677,6 +1677,34 @@ ath12k_peer_assoc_h_vht_limit(u16 tx_mcs_set,
return tx_mcs_set;
}

+static u8 ath12k_get_nss_160mhz(struct ath12k *ar,
+ u8 max_nss)
+{
+ u8 nss_ratio_info = ar->pdev->cap.nss_ratio_info;
+ u8 max_sup_nss = 0;
+
+ switch (nss_ratio_info) {
+ case WMI_NSS_RATIO_1BY2_NSS:
+ max_sup_nss = max_nss >> 1;
+ break;
+ case WMI_NSS_RATIO_3BY4_NSS:
+ ath12k_warn(ar->ab, "WMI_NSS_RATIO_3BY4_NSS not supported\n");
+ break;
+ case WMI_NSS_RATIO_1_NSS:
+ max_sup_nss = max_nss;
+ break;
+ case WMI_NSS_RATIO_2_NSS:
+ ath12k_warn(ar->ab, "WMI_NSS_RATIO_2_NSS not supported\n");
+ break;
+ default:
+ ath12k_warn(ar->ab, "invalid nss ratio received from fw: %d\n",
+ nss_ratio_info);
+ break;
+ }
+
+ return max_sup_nss;
+}
+
static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -1692,6 +1720,7 @@ static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
u8 max_nss, vht_mcs;
int i, vht_nss, nss_idx;
bool user_rate_valid = true;
+ u32 rx_nss, tx_nss, nss_160;

if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
return;
@@ -1786,10 +1815,24 @@ static void ath12k_peer_assoc_h_vht(struct ath12k *ar,
/* TODO: Check */
arg->tx_max_mcs_nss = 0xFF;

- ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
- sta->addr, arg->peer_max_mpdu, arg->peer_flags);
+ if (arg->peer_phymode == MODE_11AC_VHT160) {
+ tx_nss = ath12k_get_nss_160mhz(ar, max_nss);
+ rx_nss = min(arg->peer_nss, tx_nss);
+ arg->peer_bw_rxnss_override = ATH12K_BW_NSS_MAP_ENABLE;

- /* TODO: rxnss_override */
+ if (!rx_nss) {
+ ath12k_warn(ar->ab, "invalid max_nss\n");
+ return;
+ }
+
+ nss_160 = u32_encode_bits(rx_nss - 1, ATH12K_PEER_RX_NSS_160MHZ);
+ arg->peer_bw_rxnss_override |= nss_160;
+ }
+
+ ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
+ "mac vht peer %pM max_mpdu %d flags 0x%x nss_override 0x%x\n",
+ sta->addr, arg->peer_max_mpdu, arg->peer_flags,
+ arg->peer_bw_rxnss_override);
}

static int ath12k_mac_get_max_he_mcs_map(u16 mcs_map, int nss)
@@ -1876,6 +1919,7 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
u16 he_tx_mcs = 0, v = 0;
int he_nss, nss_idx;
bool user_rate_valid = true;
+ u32 rx_nss, tx_nss, nss_160;

if (WARN_ON(ath12k_mac_vif_chan(vif, &def)))
return;
@@ -2055,11 +2099,28 @@ static void ath12k_peer_assoc_h_he(struct ath12k *ar,
he_mcs_mask[i])
max_nss = i + 1;
}
+ max_nss = min(max_nss, ar->num_tx_chains);
arg->peer_nss = min(sta->deflink.rx_nss, max_nss);

+ if (arg->peer_phymode == MODE_11AX_HE160) {
+ tx_nss = ath12k_get_nss_160mhz(ar, max_nss);
+ rx_nss = min(arg->peer_nss, tx_nss);
+ arg->peer_bw_rxnss_override = ATH12K_BW_NSS_MAP_ENABLE;
+
+ if (!rx_nss) {
+ ath12k_warn(ar->ab, "invalid max_nss\n");
+ return;
+ }
+
+ nss_160 = u32_encode_bits(rx_nss - 1, ATH12K_PEER_RX_NSS_160MHZ);
+ arg->peer_bw_rxnss_override |= nss_160;
+ }
+
ath12k_dbg(ar->ab, ATH12K_DBG_MAC,
- "mac he peer %pM nss %d mcs cnt %d\n",
- sta->deflink.addr, arg->peer_nss, arg->peer_he_mcs_count);
+ "mac he peer %pM nss %d mcs cnt %d nss_override 0x%x\n",
+ sta->deflink.addr, arg->peer_nss,
+ arg->peer_he_mcs_count,
+ arg->peer_bw_rxnss_override);
}

static void ath12k_peer_assoc_h_smps(struct ieee80211_sta *sta,
@@ -2520,12 +2581,12 @@ static void ath12k_peer_assoc_prepare(struct ath12k *ar,
ath12k_peer_assoc_h_basic(ar, vif, sta, arg);
ath12k_peer_assoc_h_crypto(ar, vif, sta, arg);
ath12k_peer_assoc_h_rates(ar, vif, sta, arg);
+ ath12k_peer_assoc_h_phymode(ar, vif, sta, arg);
ath12k_peer_assoc_h_ht(ar, vif, sta, arg);
ath12k_peer_assoc_h_vht(ar, vif, sta, arg);
ath12k_peer_assoc_h_he(ar, vif, sta, arg);
ath12k_peer_assoc_h_eht(ar, vif, sta, arg);
ath12k_peer_assoc_h_qos(ar, vif, sta, arg);
- ath12k_peer_assoc_h_phymode(ar, vif, sta, arg);
ath12k_peer_assoc_h_smps(sta, arg);

/* TODO: amsdu_disable req? */
@@ -4909,10 +4970,8 @@ ath12k_create_vht_cap(struct ath12k *ar, u32 rate_cap_tx_chainmask,

ath12k_set_vht_txbf_cap(ar, &vht_cap.cap);

- /* TODO: Enable back VHT160 mode once association issues are fixed */
- /* Disabling VHT160 and VHT80+80 modes */
- vht_cap.cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK;
- vht_cap.cap &= ~IEEE80211_VHT_CAP_SHORT_GI_160;
+ /* 80P80 is not supported */
+ vht_cap.cap &= ~IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;

rxmcs_map = 0;
txmcs_map = 0;
@@ -8452,7 +8511,8 @@ static int ath12k_mac_setup_iface_combinations(struct ath12k_hw *ah)
combinations[0].radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40) |
- BIT(NL80211_CHAN_WIDTH_80);
+ BIT(NL80211_CHAN_WIDTH_80) |
+ BIT(NL80211_CHAN_WIDTH_160);

wiphy->iface_combinations = combinations;
wiphy->n_iface_combinations = 1;
@@ -8624,6 +8684,9 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah)
ieee80211_hw_set(hw, SUPPORTS_TX_FRAG);
ieee80211_hw_set(hw, REPORTS_LOW_ACK);

+ if (cap->nss_ratio_enabled)
+ ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
+
if (ht_cap & WMI_HT_CAP_ENABLED) {
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h
index bb3135e50751..d9c25c4de268 100644
--- a/drivers/net/wireless/ath/ath12k/mac.h
+++ b/drivers/net/wireless/ath/ath12k/mac.h
@@ -36,6 +36,8 @@ struct ath12k_generic_iter {
#define IEEE80211_DISABLE_VHT_MCS_SUPPORT_0_11 BIT(24)

#define ATH12K_CHAN_WIDTH_NUM 14
+#define ATH12K_BW_NSS_MAP_ENABLE BIT(31)
+#define ATH12K_PEER_RX_NSS_160MHZ GENMASK(2, 0)

#define ATH12K_TX_POWER_MAX_VAL 70
#define ATH12K_TX_POWER_MIN_VAL 0
diff --git a/drivers/net/wireless/ath/ath12k/wmi.c b/drivers/net/wireless/ath/ath12k/wmi.c
index 2e6a45225228..1ab50257ea9d 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.c
+++ b/drivers/net/wireless/ath/ath12k/wmi.c
@@ -519,6 +519,10 @@ ath12k_pull_mac_phy_cap_svc_ready_ext(struct ath12k_wmi_pdev *wmi_handle,
pdev_cap->he_mcs = le32_to_cpu(mac_caps->he_supp_mcs_5g);
pdev_cap->tx_chain_mask = le32_to_cpu(mac_caps->tx_chain_mask_5g);
pdev_cap->rx_chain_mask = le32_to_cpu(mac_caps->rx_chain_mask_5g);
+ pdev_cap->nss_ratio_enabled =
+ WMI_NSS_RATIO_EN_DIS_GET(mac_caps->nss_ratio);
+ pdev_cap->nss_ratio_info =
+ WMI_NSS_RATIO_INFO_GET(mac_caps->nss_ratio);
} else {
return -EINVAL;
}
@@ -974,11 +978,24 @@ int ath12k_wmi_vdev_down(struct ath12k *ar, u8 vdev_id)
static void ath12k_wmi_put_wmi_channel(struct ath12k_wmi_channel_params *chan,
struct wmi_vdev_start_req_arg *arg)
{
+ u32 center_freq1 = arg->band_center_freq1;
+
memset(chan, 0, sizeof(*chan));

chan->mhz = cpu_to_le32(arg->freq);
chan->band_center_freq1 = cpu_to_le32(arg->band_center_freq1);
- chan->band_center_freq2 = 0;
+ if (arg->mode == MODE_11AX_HE160) {
+ if (arg->freq > center_freq1)
+ chan->band_center_freq1 =
+ cpu_to_le32(center_freq1 + 40);
+ else
+ chan->band_center_freq1 =
+ cpu_to_le32(center_freq1 - 40);
+
+ chan->band_center_freq2 = cpu_to_le32(arg->band_center_freq1);
+ } else {
+ chan->band_center_freq2 = 0;
+ }

chan->info |= le32_encode_bits(arg->mode, WMI_CHAN_INFO_MODE);
if (arg->passive)
diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 00871d6be3ea..e52ba8d7fba3 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -2253,6 +2253,21 @@ enum wmi_direct_buffer_module {
WMI_DIRECT_BUF_MAX
};

+/**
+ * enum wmi_nss_ratio - NSS ratio received from FW during service ready ext event
+ * @WMI_NSS_RATIO_1BY2_NSS: Max nss of 160MHz is equals to half of the max nss of 80MHz
+ * @WMI_NSS_RATIO_3BY4_NSS: Max nss of 160MHz is equals to 3/4 of the max nss of 80MHz
+ * @WMI_NSS_RATIO_1_NSS: Max nss of 160MHz is equals to the max nss of 80MHz
+ * @WMI_NSS_RATIO_2_NSS: Max nss of 160MHz is equals to two times the max nss of 80MHz
+ */
+
+enum wmi_nss_ratio {
+ WMI_NSS_RATIO_1BY2_NSS,
+ WMI_NSS_RATIO_3BY4_NSS,
+ WMI_NSS_RATIO_1_NSS,
+ WMI_NSS_RATIO_2_NSS
+};
+
struct ath12k_wmi_pdev_band_arg {
u32 pdev_id;
u32 start_freq;
@@ -2558,6 +2573,12 @@ struct ath12k_wmi_hw_mode_cap_params {
} __packed;

#define WMI_MAX_HECAP_PHY_SIZE (3)
+#define WMI_NSS_RATIO_EN_DIS_BITPOS BIT(0)
+#define WMI_NSS_RATIO_EN_DIS_GET(_val) \
+ le32_get_bits(_val, WMI_NSS_RATIO_EN_DIS_BITPOS)
+#define WMI_NSS_RATIO_INFO_BITPOS GENMASK(4, 1)
+#define WMI_NSS_RATIO_INFO_GET(_val) \
+ le32_get_bits(_val, WMI_NSS_RATIO_INFO_BITPOS)

/* pdev_id is present in lower 16 bits of pdev_and_hw_link_ids in
* ath12k_wmi_mac_phy_caps_params & ath12k_wmi_caps_ext_params.
@@ -2599,6 +2620,13 @@ struct ath12k_wmi_mac_phy_caps_params {
__le32 he_cap_info_2g_ext;
__le32 he_cap_info_5g_ext;
__le32 he_cap_info_internal;
+ __le32 wireless_modes;
+ __le32 low_2ghz_chan_freq;
+ __le32 high_2ghz_chan_freq;
+ __le32 low_5ghz_chan_freq;
+ __le32 high_5ghz_chan_freq;
+ __le32 nss_ratio;
+
} __packed;

struct ath12k_wmi_hal_reg_caps_ext_params {
--
2.17.1

2024-03-27 17:32:13

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 03/10] wifi: ath12k: push EHT MU-MIMO params from hostapd to hardware

Currently, only the EHT IE in management frames is updated with
respect to MU-MIMO configurations, but this change is not
reflected in the hardware. Add support to propagate MU-MIMO
configurations to the hardware as well for AP mode. Similar
support for STA mode will be added in future.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: Muna Sinada <[email protected]>
Signed-off-by: Muna Sinada <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 50 +++++++++++++++++++++++++++
drivers/net/wireless/ath/ath12k/wmi.h | 21 +++++++++++
2 files changed, 71 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 9921303dc5fa..6465dc11a92e 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -2508,6 +2508,50 @@ static int ath12k_mac_vif_recalc_sta_he_txbf(struct ath12k *ar,
return 0;
}

+static int ath12k_mac_set_eht_txbf_conf(struct ath12k_vif *arvif)
+{
+ u32 param = WMI_VDEV_PARAM_SET_EHT_MU_MODE;
+ struct ath12k *ar = arvif->ar;
+ u32 value = 0;
+ int ret;
+
+ if (!arvif->vif->bss_conf.eht_support)
+ return 0;
+
+ if (arvif->vif->bss_conf.eht_su_beamformer) {
+ value |= u32_encode_bits(EHT_SU_BFER_ENABLE, EHT_MODE_SU_TX_BFER);
+ if (arvif->vif->bss_conf.eht_mu_beamformer &&
+ arvif->vdev_type == WMI_VDEV_TYPE_AP)
+ value |= u32_encode_bits(EHT_MU_BFER_ENABLE,
+ EHT_MODE_MU_TX_BFER) |
+ u32_encode_bits(EHT_DL_MUOFDMA_ENABLE,
+ EHT_MODE_DL_OFDMA_MUMIMO) |
+ u32_encode_bits(EHT_UL_MUOFDMA_ENABLE,
+ EHT_MODE_UL_OFDMA_MUMIMO);
+ }
+
+ if (arvif->vif->type != NL80211_IFTYPE_MESH_POINT) {
+ value |= u32_encode_bits(EHT_DL_MUOFDMA_ENABLE, EHT_MODE_DL_OFDMA) |
+ u32_encode_bits(EHT_UL_MUOFDMA_ENABLE, EHT_MODE_UL_OFDMA);
+
+ if (arvif->vif->bss_conf.eht_80mhz_full_bw_ul_mumimo)
+ value |= u32_encode_bits(EHT_UL_MUMIMO_ENABLE, EHT_MODE_MUMIMO);
+
+ if (arvif->vif->bss_conf.eht_su_beamformee)
+ value |= u32_encode_bits(EHT_SU_BFEE_ENABLE,
+ EHT_MODE_SU_TX_BFEE);
+ }
+
+ ret = ath12k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param, value);
+ if (ret) {
+ ath12k_warn(ar->ab, "failed to set vdev %d EHT MU mode: %d\n",
+ arvif->vdev_id, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
static void ath12k_bss_assoc(struct ath12k *ar,
struct ath12k_vif *arvif,
struct ieee80211_bss_conf *bss_conf)
@@ -2892,6 +2936,12 @@ static void ath12k_mac_bss_info_changed(struct ath12k *ar,
ath12k_warn(ar->ab,
"failed to set HE TXBF config for vdev: %d\n",
arvif->vdev_id);
+
+ ret = ath12k_mac_set_eht_txbf_conf(arvif);
+ if (ret)
+ ath12k_warn(ar->ab,
+ "failed to set EHT TXBF config for vdev: %d\n",
+ arvif->vdev_id);
}
ath12k_control_beaconing(arvif, info);

diff --git a/drivers/net/wireless/ath/ath12k/wmi.h b/drivers/net/wireless/ath/ath12k/wmi.h
index 055b1d65bff0..752fc2d53d8f 100644
--- a/drivers/net/wireless/ath/ath12k/wmi.h
+++ b/drivers/net/wireless/ath/ath12k/wmi.h
@@ -1135,6 +1135,7 @@ enum wmi_tlv_vdev_param {
WMI_VDEV_PARAM_BSS_COLOR,
WMI_VDEV_PARAM_SET_HEMU_MODE,
WMI_VDEV_PARAM_HEOPS_0_31 = 0x8003,
+ WMI_VDEV_PARAM_SET_EHT_MU_MODE = 0x8005,
};

enum wmi_tlv_peer_flags {
@@ -2962,6 +2963,26 @@ struct ath12k_wmi_rx_reorder_queue_remove_arg {
#define HE_MU_BFER_ENABLE 1
#define HE_SU_BFER_ENABLE 1

+#define EHT_MODE_SU_TX_BFEE BIT(0)
+#define EHT_MODE_SU_TX_BFER BIT(1)
+#define EHT_MODE_MU_TX_BFEE BIT(2)
+#define EHT_MODE_MU_TX_BFER BIT(3)
+#define EHT_MODE_DL_OFDMA BIT(4)
+#define EHT_MODE_UL_OFDMA BIT(5)
+#define EHT_MODE_MUMIMO BIT(6)
+#define EHT_MODE_DL_OFDMA_TXBF BIT(7)
+#define EHT_MODE_DL_OFDMA_MUMIMO BIT(8)
+#define EHT_MODE_UL_OFDMA_MUMIMO BIT(9)
+
+#define EHT_DL_MUOFDMA_ENABLE 1
+#define EHT_UL_MUOFDMA_ENABLE 1
+#define EHT_DL_MUMIMO_ENABLE 1
+#define EHT_UL_MUMIMO_ENABLE 1
+#define EHT_MU_BFEE_ENABLE 1
+#define EHT_SU_BFEE_ENABLE 1
+#define EHT_MU_BFER_ENABLE 1
+#define EHT_SU_BFER_ENABLE 1
+
#define HE_VHT_SOUNDING_MODE_ENABLE 1
#define HE_SU_MU_SOUNDING_MODE_ENABLE 1
#define HE_TRIG_NONTRIG_SOUNDING_MODE_ENABLE 1
--
2.17.1

2024-03-27 17:34:25

by Pradeep Kumar Chitrapu

Subject: [PATCH v2 05/10] wifi: ath12k: generate rx and tx mcs maps for supported HE mcs

Generate rx and tx mcs maps in ath12k_mac_set_hemcsmap() based
on number of supported tx/rx chains and set them in supported
mcs/nss for HE capabilities.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1

Co-developed-by: Muna Sinada <[email protected]>
Signed-off-by: Muna Sinada <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath12k/mac.c | 40 ++++++++++++++++++++-------
1 file changed, 30 insertions(+), 10 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
index 72b157e60158..46ef2d63a3de 100644
--- a/drivers/net/wireless/ath/ath12k/mac.c
+++ b/drivers/net/wireless/ath/ath12k/mac.c
@@ -4879,20 +4879,40 @@ static __le16 ath12k_mac_setup_he_6ghz_cap(struct ath12k_pdev_cap *pcap,
return cpu_to_le16(bcap->he_6ghz_capa);
}

-static void ath12k_mac_set_hemcsmap(struct ath12k_band_cap *band_cap,
+static void ath12k_mac_set_hemcsmap(struct ath12k *ar,
+ struct ath12k_pdev_cap *cap,
struct ieee80211_sta_he_cap *he_cap)
{
struct ieee80211_he_mcs_nss_supp *mcs_nss = &he_cap->he_mcs_nss_supp;
+ u16 txmcs_map, rxmcs_map;
+ u32 i;
+
+ rxmcs_map = 0;
+ txmcs_map = 0;
+ for (i = 0; i < 8; i++) {
+ if (i < ar->num_tx_chains &&
+ (ar->cfg_tx_chainmask >> cap->tx_chain_mask_shift) & BIT(i))
+ txmcs_map |= IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2);
+ else
+ txmcs_map |= IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2);
+
+ if (i < ar->num_rx_chains &&
+ (ar->cfg_rx_chainmask >> cap->tx_chain_mask_shift) & BIT(i))
+ rxmcs_map |= IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2);
+ else
+ rxmcs_map |= IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2);
+ }

- mcs_nss->rx_mcs_80 = cpu_to_le16(band_cap->he_mcs & 0xffff);
- mcs_nss->tx_mcs_80 = cpu_to_le16(band_cap->he_mcs & 0xffff);
- mcs_nss->rx_mcs_160 = cpu_to_le16((band_cap->he_mcs >> 16) & 0xffff);
- mcs_nss->tx_mcs_160 = cpu_to_le16((band_cap->he_mcs >> 16) & 0xffff);
- mcs_nss->rx_mcs_80p80 = cpu_to_le16((band_cap->he_mcs >> 16) & 0xffff);
- mcs_nss->tx_mcs_80p80 = cpu_to_le16((band_cap->he_mcs >> 16) & 0xffff);
+ mcs_nss->rx_mcs_80 = cpu_to_le16(rxmcs_map & 0xffff);
+ mcs_nss->tx_mcs_80 = cpu_to_le16(txmcs_map & 0xffff);
+ mcs_nss->rx_mcs_160 = cpu_to_le16(rxmcs_map & 0xffff);
+ mcs_nss->tx_mcs_160 = cpu_to_le16(txmcs_map & 0xffff);
+ mcs_nss->rx_mcs_80p80 = cpu_to_le16(rxmcs_map & 0xffff);
+ mcs_nss->tx_mcs_80p80 = cpu_to_le16(txmcs_map & 0xffff);
}

-static void ath12k_mac_copy_he_cap(struct ath12k_band_cap *band_cap,
+static void ath12k_mac_copy_he_cap(struct ath12k *ar,
+ struct ath12k_band_cap *band_cap,
int iftype, u8 num_tx_chains,
struct ieee80211_sta_he_cap *he_cap)
{
@@ -4934,7 +4954,7 @@ static void ath12k_mac_copy_he_cap(struct ath12k_band_cap *band_cap,
break;
}

- ath12k_mac_set_hemcsmap(band_cap, he_cap);
+ ath12k_mac_set_hemcsmap(ar, &ar->pdev->cap, he_cap);
memset(he_cap->ppe_thres, 0, sizeof(he_cap->ppe_thres));
if (he_cap_elem->phy_cap_info[6] &
IEEE80211_HE_PHY_CAP6_PPE_THRESHOLD_PRESENT)
@@ -5123,7 +5143,7 @@ static int ath12k_mac_copy_sband_iftype_data(struct ath12k *ar,

data[idx].types_mask = BIT(i);

- ath12k_mac_copy_he_cap(band_cap, i, ar->num_tx_chains, he_cap);
+ ath12k_mac_copy_he_cap(ar, band_cap, i, ar->num_tx_chains, he_cap);
if (band == NL80211_BAND_6GHZ) {
data[idx].he_6ghz_capa.capa =
ath12k_mac_setup_he_6ghz_cap(cap, band_cap);
--
2.17.1

2024-03-29 17:45:59

by Pradeep Kumar Chitrapu

Subject: Re: [PATCH v2 00/10] wifi: ath12k: add MU-MIMO and 160 MHz bandwidth support

On 3/27/2024 10:09 AM, Pradeep Kumar Chitrapu wrote:
> Add support for
> 1. enabling MU-MIMO in HE and EHT modes from hardware
> 2. setting fixed HE rate/GI/LTF
> 3. 160 MHz bandwidth in HE mode
> 4. extended NSS bandwidth support
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
>
> changes in v2:
> - Amend mac80211 patch description as the patch is not specific
> to AP mode.
> - Amend EHT MU-MIMO patch description to specify future support
> for STA mode.
>
> Pradeep Kumar Chitrapu (10):
> wifi: mac80211: Add EHT UL MU-MIMO flag in ieee80211_bss_conf
> wifi: ath12k: push HE MU-MIMO params from hostapd to hardware
> wifi: ath12k: push EHT MU-MIMO params from hostapd to hardware
> wifi: ath12k: move HE MCS mapper to a separate function
> wifi: ath12k: generate rx and tx mcs maps for supported HE mcs
> wifi: ath12k: fix TX and RX MCS rate configurations in HE mode
> wifi: ath12k: add support for setting fixed HE rate/GI/LTF
> wifi: ath12k: clean up 80P80 support
> wifi: ath12k: add support for 160 MHz bandwidth
> wifi: ath12k: add extended NSS bandwidth support for 160 MHz
>
> drivers/net/wireless/ath/ath12k/core.h | 2 +
> drivers/net/wireless/ath/ath12k/mac.c | 1035 ++++++++++++++++++++----
> drivers/net/wireless/ath/ath12k/mac.h | 17 +
> drivers/net/wireless/ath/ath12k/wmi.c | 24 +-
> drivers/net/wireless/ath/ath12k/wmi.h | 98 ++-
> include/net/mac80211.h | 4 +
> net/mac80211/cfg.c | 5 +
> 7 files changed, 981 insertions(+), 204 deletions(-)
>
>
> base-commit: fe7e1b830cf3c0272aa4eaf367c4c7b29c169c3d
Hi Kalle/Johannes

I noticed patch status as 'Changes requested', but there were no
accompanying comments specifying the exact modifications needed.
I kindly request additional information or guidance on the specific
areas that require correction. Once I have a clearer understanding, I
will promptly address the necessary fixes.

Thanks
Pradeep

2024-03-29 21:34:53

by Jeff Johnson

Subject: Re: [PATCH v2 07/10] wifi: ath12k: add support for setting fixed HE rate/GI/LTF

On 3/27/2024 10:09 AM, Pradeep Kumar Chitrapu wrote:
> Add support to set fixed HE rate/GI/LTF values using nl80211.
> Reuse parts of the existing code path already used for HT/VHT
> to implement the new helpers symmetrically, similar to how
> HT/VHT is handled.
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>
> Co-developed-by: Muna Sinada <[email protected]>
> Signed-off-by: Muna Sinada <[email protected]>
> Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
> ---
> drivers/net/wireless/ath/ath12k/mac.c | 588 ++++++++++++++++++++++++--
> drivers/net/wireless/ath/ath12k/wmi.h | 18 +
> 2 files changed, 562 insertions(+), 44 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
> index 46ef2d63a3de..72232285d2b1 100644
> --- a/drivers/net/wireless/ath/ath12k/mac.c
> +++ b/drivers/net/wireless/ath/ath12k/mac.c
[...]
> @@ -3888,8 +4130,9 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
> mutex_lock(&ar->conf_mutex);
>
> nss = max_t(u32, 1, nss);
> - nss = min(nss, max(ath12k_mac_max_ht_nss(ht_mcs_mask),
> - ath12k_mac_max_vht_nss(vht_mcs_mask)));
> + nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
> + ath12k_mac_max_vht_nss(vht_mcs_mask),
> + ath12k_mac_max_he_nss(he_mcs_mask)));

When I run this entire series through ath12k-check I'm getting the following
issue here:

drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion
drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion

caeed0eb7fb4d (Pradeep Kumar Chitrapu 2024-03-27 10:09:07 -0700 4170) nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),

I don't see anything wrong with the code.

Even stranger is that when this series is in place, I see this same issue at
another place:
drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion
drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion

But that is actually pre-existing code from the original ath12k driver drop:
d889913205cf7 (Kalle Valo 2022-11-28 17:09:53 +0200 7903) nss = min_t(u32, ar->num_tx_chains,

And the issue is not flagged when this series is not present.

However that same logic also caused the same issue in ath11k, and Kalle fixed
it there with:
https://lore.kernel.org/all/[email protected]/

And one of the MediaTek drivers encountered a similar issue here:
https://lore.kernel.org/all/5457b92e41909dd75ab3db7a0e9ec372b917a386.1710858172.git.lorenzo@kernel.org/

So there is definitely a tooling issue here.

As a local test I added an intermediate step and now I don't see the issue
here:
- u32 changed, bw, nss, smps, bw_prev;
+ u32 changed, bw, nss, mac_nss, smps, bw_prev;
...
- nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
- ath12k_mac_max_vht_nss(vht_mcs_mask),
- ath12k_mac_max_he_nss(he_mcs_mask)));
+ mac_nss = max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
+ ath12k_mac_max_vht_nss(vht_mcs_mask),
+ ath12k_mac_max_he_nss(he_mcs_mask));
+ nss = min(nss, mac_nss);

So let's add something like that in v3 (perhaps pick a better name)

(Even with this I still see the other issue from the original driver drop so
we may need to separately propagate the ath11k driver change to ath12k).

/jeff

2024-04-01 18:08:44

by Pradeep Kumar Chitrapu

Subject: Re: [PATCH v2 07/10] wifi: ath12k: add support for setting fixed HE rate/GI/LTF

On 3/29/2024 2:34 PM, Jeff Johnson wrote:
> On 3/27/2024 10:09 AM, Pradeep Kumar Chitrapu wrote:
>> Add support to set fixed HE rate/GI/LTF values using nl80211.
>> Reuse parts of the existing code path already used for HT/VHT
>> to implement the new helpers symmetrically, similar to how
>> HT/VHT is handled.
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>>
>> Co-developed-by: Muna Sinada <[email protected]>
>> Signed-off-by: Muna Sinada <[email protected]>
>> Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
>> ---
>> drivers/net/wireless/ath/ath12k/mac.c | 588 ++++++++++++++++++++++++--
>> drivers/net/wireless/ath/ath12k/wmi.h | 18 +
>> 2 files changed, 562 insertions(+), 44 deletions(-)
>>
>> diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c
>> index 46ef2d63a3de..72232285d2b1 100644
>> --- a/drivers/net/wireless/ath/ath12k/mac.c
>> +++ b/drivers/net/wireless/ath/ath12k/mac.c
> [...]
>> @@ -3888,8 +4130,9 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
>> mutex_lock(&ar->conf_mutex);
>>
>> nss = max_t(u32, 1, nss);
>> - nss = min(nss, max(ath12k_mac_max_ht_nss(ht_mcs_mask),
>> - ath12k_mac_max_vht_nss(vht_mcs_mask)));
>> + nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
>> + ath12k_mac_max_vht_nss(vht_mcs_mask),
>> + ath12k_mac_max_he_nss(he_mcs_mask)));
>
> When I run this entire series through ath12k-check I'm getting the following
> issue here:
>
> drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion
> drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion
>
> caeed0eb7fb4d (Pradeep Kumar Chitrapu 2024-03-27 10:09:07 -0700 4170) nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
>
> I don't see anything wrong with the code.
>
> Even stranger is that when this series is in place, I see this same issue at
> another place:
> drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion
> drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion
>
> But that is actually pre-existing code from the original ath12k driver drop:
> d889913205cf7 (Kalle Valo 2022-11-28 17:09:53 +0200 7903) nss = min_t(u32, ar->num_tx_chains,
>
> And the issue is not flagged when this series is not present.
>
> However that same logic also caused the same issue in ath11k, and Kalle fixed
> it there with:
> https://lore.kernel.org/all/[email protected]/
>
> And one of the MediaTek drivers encountered a similar issue here:
> https://lore.kernel.org/all/5457b92e41909dd75ab3db7a0e9ec372b917a386.1710858172.git.lorenzo@kernel.org/
>
> So there is definitely a tooling issue here.
>
> As a local test I added an intermediate step and now I don't see the issue
> here:
> - u32 changed, bw, nss, smps, bw_prev;
> + u32 changed, bw, nss, mac_nss, smps, bw_prev;
> ...
> - nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
> - ath12k_mac_max_vht_nss(vht_mcs_mask),
> - ath12k_mac_max_he_nss(he_mcs_mask)));
> + mac_nss = max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
> + ath12k_mac_max_vht_nss(vht_mcs_mask),
> + ath12k_mac_max_he_nss(he_mcs_mask));
> + nss = min(nss, mac_nss);
>
> So let's add something like that in v3 (perhaps pick a better name)
>
> (Even with this I still see the other issue from the original driver drop so
> we may need to separately propagate the ath11k driver change to ath12k).
>
> /jeff
>
>
Sure Jeff, thanks for the details..will address in next revision

2024-04-02 11:41:20

by Kalle Valo

Subject: Re: [PATCH v2 07/10] wifi: ath12k: add support for setting fixed HE rate/GI/LTF

Jeff Johnson <[email protected]> writes:

> On 3/27/2024 10:09 AM, Pradeep Kumar Chitrapu wrote:
>> Add support to set fixed HE rate/GI/LTF values using nl80211.
>> Reuse parts of the existing code path already used for HT/VHT
>> to implement the new helpers symmetrically, similar to how
>> HT/VHT is handled.
>>
>> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
>>
>> Co-developed-by: Muna Sinada <[email protected]>
>> Signed-off-by: Muna Sinada <[email protected]>
>> Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
>> ---
>> drivers/net/wireless/ath/ath12k/mac.c | 588 ++++++++++++++++++++++++--
>> drivers/net/wireless/ath/ath12k/wmi.h | 18 +
>> 2 files changed, 562 insertions(+), 44 deletions(-)
>>
>> diff --git a/drivers/net/wireless/ath/ath12k/mac.c
>> b/drivers/net/wireless/ath/ath12k/mac.c
>> index 46ef2d63a3de..72232285d2b1 100644
>> --- a/drivers/net/wireless/ath/ath12k/mac.c
>> +++ b/drivers/net/wireless/ath/ath12k/mac.c
> [...]
>> @@ -3888,8 +4130,9 @@ static void ath12k_sta_rc_update_wk(struct work_struct *wk)
>> mutex_lock(&ar->conf_mutex);
>>
>> nss = max_t(u32, 1, nss);
>> - nss = min(nss, max(ath12k_mac_max_ht_nss(ht_mcs_mask),
>> - ath12k_mac_max_vht_nss(vht_mcs_mask)));
>> + nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
>> + ath12k_mac_max_vht_nss(vht_mcs_mask),
>> + ath12k_mac_max_he_nss(he_mcs_mask)));
>
> When I run this entire series through ath12k-check I'm getting the following
> issue here:
>
> drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion
> drivers/net/wireless/ath/ath12k/mac.c:4170:15: error: too long token expansion
>
> caeed0eb7fb4d (Pradeep Kumar Chitrapu 2024-03-27 10:09:07 -0700 4170)
> nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
>
> I don't see anything wrong with the code.
>
> Even stranger is that when this series is in place, I see this same issue at
> another place:
> drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion
> drivers/net/wireless/ath/ath12k/mac.c:7903:23: error: too long token expansion
>
> But that is actually pre-existing code from the original ath12k driver drop:
> d889913205cf7 (Kalle Valo 2022-11-28 17:09:53 +0200 7903) nss =
> min_t(u32, ar->num_tx_chains,
>
> And the issue is not flagged when this series is not present.
>
> However that same logic also caused the same issue in ath11k, and Kalle fixed
> it there with:
> https://lore.kernel.org/all/[email protected]/
>
> And one of the MediaTek drivers encountered a similar issue here:
> https://lore.kernel.org/all/5457b92e41909dd75ab3db7a0e9ec372b917a386.1710858172.git.lorenzo@kernel.org/
>
> So there is definitely a tooling issue here.

IIRC this is due to a statement length limit reached in sparse (or
something like that) and recently max()/min() macros were modified so
that their output is longer than before.

> As a local test I added an intermediate step and now I don't see the issue
> here:
> - u32 changed, bw, nss, smps, bw_prev;
> + u32 changed, bw, nss, mac_nss, smps, bw_prev;
> ...
> - nss = min(nss, max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
> - ath12k_mac_max_vht_nss(vht_mcs_mask),
> - ath12k_mac_max_he_nss(he_mcs_mask)));
> + mac_nss = max3(ath12k_mac_max_ht_nss(ht_mcs_mask),
> + ath12k_mac_max_vht_nss(vht_mcs_mask),
> + ath12k_mac_max_he_nss(he_mcs_mask));
> + nss = min(nss, mac_nss);
>
> So let's add something like that in v3 (perhaps pick a better name)

Yeah, that's a good way to workaround the warning.

--
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https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches