wifi: ath12k: disable QMI PHY capability learn in split-phy QCN9274

QMI PHY capability learn is used to get PHY count information to
support single/multi link operation (SLO/MLO) configuration. The
QCN9274 dualmac firmware currently do not support SLO/MLO, if two
PHYs are within the same chip. Due to this firmware crashes in
split-phy QCN9274, while bringing up AP with MLO parameter enabled
in QMI host capability request message.

The QMI PHY capability learn is not required for split-phy QCN9274,
if SLO/MLO is not supported within the same chip. Hence, disable QMI
PHY capability learn support in split-phy QCN9274.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00188-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240129065724.2310207-14-quic_rajkbhag@quicinc.com

drivers/net/wireless/ath/ath12k/core.c

@@ -1218,6 +1218,7 @@ struct ath12k_base *ath12k_core_alloc(struct device *dev, size_t priv_size,
 	ab->dev = dev;
 	ab->hif.bus = bus;
 	ab->qmi.num_radios = U8_MAX;
+	ab->slo_capable = true;
 
 	return ab;
 

drivers/net/wireless/ath/ath12k/core.h

@@ -842,6 +842,11 @@ struct ath12k_base {
 
 	const struct hal_rx_ops *hal_rx_ops;
 
+	/* slo_capable denotes if the single/multi link operation
+	 * is supported within the same chip (SoC).
+	 */
+	bool slo_capable;
+
 	/* must be last */
 	u8 drv_priv[] __aligned(sizeof(void *));
 };

drivers/net/wireless/ath/ath12k/mhi.c

@@ -385,6 +385,7 @@ int ath12k_mhi_register(struct ath12k_pci *ab_pci)
 				   "failed to read board id\n");
 		} else if (board_id & OTP_VALID_DUALMAC_BOARD_ID_MASK) {
 			dualmac = true;
+			ab->slo_capable = false;
 			ath12k_dbg(ab, ATH12K_DBG_BOOT,
 				   "dualmac fw selected for board id: %x\n", board_id);
 		}

drivers/net/wireless/ath/ath12k/qmi.c

@@ -2124,6 +2124,9 @@ static void ath12k_qmi_phy_cap_send(struct ath12k_base *ab)
 	struct qmi_txn txn;
 	int ret;
 
+	if (!ab->slo_capable)
+		goto out;
+
 	ret = qmi_txn_init(&ab->qmi.handle, &txn,
 			   qmi_wlanfw_phy_cap_resp_msg_v01_ei, &resp);
 	if (ret < 0)