[PATCH ath-next 4/4] wifi: ath12k: Enable memory profile selection for QCN9274

[Aaradhana Sahu]

The QCN9274 supports two memory profiles: a default profile and a
low-memory profile. The driver signals the firmware to enable
low-memory optimizations using the QMI initialization service.

Add support to select the low-memory profile on system with less than
512 MB RAM.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.5-01651-QCAHKSWPL_SILICONZ-1
Tested-on: WCN7850 hw2.0 WLAN.HMT.1.1.c5-00284.1-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3

Signed-off-by: Aaradhana Sahu <aaradhana.sahu at oss.qualcomm.com>
---
 drivers/net/wireless/ath/ath12k/ahb.c  |  1 +
 drivers/net/wireless/ath/ath12k/core.c | 16 +++++++++++++++-
 drivers/net/wireless/ath/ath12k/core.h |  2 ++
 drivers/net/wireless/ath/ath12k/pci.c  |  2 ++
 drivers/net/wireless/ath/ath12k/qmi.c  |  2 +-
 5 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/ahb.c b/drivers/net/wireless/ath/ath12k/ahb.c
index 8d1a86e420a4..3b983f4e3268 100644
--- a/drivers/net/wireless/ath/ath12k/ahb.c
+++ b/drivers/net/wireless/ath/ath12k/ahb.c
@@ -1022,6 +1022,7 @@ static int ath12k_ahb_probe(struct platform_device *pdev)
 	ab->hif.ops = hif_ops;
 	ab->pdev = pdev;
 	ab->hw_rev = hw_rev;
+	ab->target_mem_mode = ATH12K_QMI_MEMORY_MODE_DEFAULT;
 	platform_set_drvdata(pdev, ab);
 	ab_ahb = ath12k_ab_to_ahb(ab);
 	ab_ahb->ab = ab;
diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index 53e60dba3bf8..bf46acb54268 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -1728,6 +1728,20 @@ static void ath12k_core_reset(struct work_struct *work)
 	mutex_unlock(&ag->mutex);
 }
 
+enum ath12k_qmi_mem_mode ath12k_core_get_memory_mode(struct ath12k_base *ab)
+{
+	unsigned long total_ram;
+	struct sysinfo si;
+
+	si_meminfo(&si);
+	total_ram = si.totalram * si.mem_unit;
+
+	if (total_ram < SZ_512M)
+		return ATH12K_QMI_MEMORY_MODE_LOW_512_M;
+
+	return ATH12K_QMI_MEMORY_MODE_DEFAULT;
+}
+
 int ath12k_core_pre_init(struct ath12k_base *ab)
 {
 	const struct ath12k_mem_profile_based_param *param;
@@ -1739,7 +1753,7 @@ int ath12k_core_pre_init(struct ath12k_base *ab)
 		return ret;
 	}
 
-	param = &ath12k_mem_profile_based_param[ATH12K_QMI_MEMORY_MODE_DEFAULT];
+	param = &ath12k_mem_profile_based_param[ab->target_mem_mode];
 	ab->profile_param = param;
 	ath12k_fw_map(ab);
 
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 272b7e9822ea..996753d794f0 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -1230,6 +1230,7 @@ struct ath12k_base {
 	struct ath12k_reg_freq reg_freq_5ghz;
 	struct ath12k_reg_freq reg_freq_6ghz;
 	const struct ath12k_mem_profile_based_param *profile_param;
+	enum ath12k_qmi_mem_mode target_mem_mode;
 
 	/* must be last */
 	u8 drv_priv[] __aligned(sizeof(void *));
@@ -1364,6 +1365,7 @@ void ath12k_fw_stats_free(struct ath12k_fw_stats *stats);
 void ath12k_fw_stats_reset(struct ath12k *ar);
 struct reserved_mem *ath12k_core_get_reserved_mem(struct ath12k_base *ab,
 						  int index);
+enum ath12k_qmi_mem_mode ath12k_core_get_memory_mode(struct ath12k_base *ab);
 
 static inline const char *ath12k_scan_state_str(enum ath12k_scan_state state)
 {
diff --git a/drivers/net/wireless/ath/ath12k/pci.c b/drivers/net/wireless/ath/ath12k/pci.c
index 1f3cfd9b89fd..b4e7e77518dd 100644
--- a/drivers/net/wireless/ath/ath12k/pci.c
+++ b/drivers/net/wireless/ath/ath12k/pci.c
@@ -1595,6 +1595,7 @@ static int ath12k_pci_probe(struct pci_dev *pdev,
 		ab->hal_rx_ops = &hal_rx_qcn9274_ops;
 		ath12k_pci_read_hw_version(ab, &soc_hw_version_major,
 					   &soc_hw_version_minor);
+		ab->target_mem_mode = ath12k_core_get_memory_mode(ab);
 		switch (soc_hw_version_major) {
 		case ATH12K_PCI_SOC_HW_VERSION_2:
 			ab->hw_rev = ATH12K_HW_QCN9274_HW20;
@@ -1618,6 +1619,7 @@ static int ath12k_pci_probe(struct pci_dev *pdev,
 		ab->hal_rx_ops = &hal_rx_wcn7850_ops;
 		ath12k_pci_read_hw_version(ab, &soc_hw_version_major,
 					   &soc_hw_version_minor);
+		ab->target_mem_mode = ATH12K_QMI_MEMORY_MODE_DEFAULT;
 		switch (soc_hw_version_major) {
 		case ATH12K_PCI_SOC_HW_VERSION_2:
 			ab->hw_rev = ATH12K_HW_WCN7850_HW20;
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 5e8943060443..7c611a1fd6d0 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -3856,7 +3856,7 @@ int ath12k_qmi_init_service(struct ath12k_base *ab)
 	memset(&ab->qmi.target_mem, 0, sizeof(struct target_mem_chunk));
 	ab->qmi.ab = ab;
 
-	ab->qmi.target_mem_mode = ATH12K_QMI_MEMORY_MODE_DEFAULT;
+	ab->qmi.target_mem_mode = ab->target_mem_mode;
 	ret = qmi_handle_init(&ab->qmi.handle, ATH12K_QMI_RESP_LEN_MAX,
 			      &ath12k_qmi_ops, ath12k_qmi_msg_handlers);
 	if (ret < 0) {
-- 
2.34.1