[PATCH ath-next 1/4] wifi: ath12k: Add a table of parameters entries impacting memory consumption

[Aaradhana Sahu]

Introduce ath12k_mem_profile_based_param structure to define
configuration parameters for both default and low-memory profiles.

Add support for enabling the low-memory profile in the follow-up
patch by making the following changes:
- Reduce sizes for transmit, receive, and monitor descriptor rings.
- Reduce transmit and receive descriptor count.
- Limit the maximum number of virtual devices (vdevs) to 9.
- Reduce the maximum number of client support per radio.

Centralize these parameters in the ath12k_mem_profile_based_param
structure to simplify switching between memory profiles.

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/core.c | 33 ++++++++++++++++++++++++++
 drivers/net/wireless/ath/ath12k/core.h | 17 +++++++++++++
 drivers/net/wireless/ath/ath12k/qmi.c  |  2 +-
 drivers/net/wireless/ath/ath12k/qmi.h  |  6 ++++-
 4 files changed, 56 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/core.c b/drivers/net/wireless/ath/ath12k/core.c
index ffc19a6b9485..8b0c67735171 100644
--- a/drivers/net/wireless/ath/ath12k/core.c
+++ b/drivers/net/wireless/ath/ath12k/core.c
@@ -37,6 +37,36 @@ static struct list_head ath12k_hw_group_list = LIST_HEAD_INIT(ath12k_hw_group_li
 
 static DEFINE_MUTEX(ath12k_hw_group_mutex);
 
+static const struct
+ath12k_mem_profile_based_param ath12k_mem_profile_based_param[] = {
+[ATH12K_QMI_MEMORY_MODE_DEFAULT] = {
+		.num_vdevs = 17,
+		.max_client_single = 512,
+		.max_client_dbs = 128,
+		.max_client_dbs_sbs = 128,
+		.dp_params = {
+			.tx_comp_ring_size = 32768,
+			.rxdma_monitor_buf_ring_size = 4096,
+			.rxdma_monitor_dst_ring_size = 8092,
+			.num_pool_tx_desc = 32768,
+			.rx_desc_count = 12288,
+		},
+	},
+[ATH12K_QMI_MEMORY_MODE_LOW_512_M] = {
+		.num_vdevs = 9,
+		.max_client_single = 128,
+		.max_client_dbs = 64,
+		.max_client_dbs_sbs = 64,
+		.dp_params = {
+			.tx_comp_ring_size = 16384,
+			.rxdma_monitor_buf_ring_size = 256,
+			.rxdma_monitor_dst_ring_size = 512,
+			.num_pool_tx_desc = 16384,
+			.rx_desc_count = 6144,
+		},
+	},
+};
+
 static int ath12k_core_rfkill_config(struct ath12k_base *ab)
 {
 	struct ath12k *ar;
@@ -1713,6 +1743,7 @@ static void ath12k_core_reset(struct work_struct *work)
 
 int ath12k_core_pre_init(struct ath12k_base *ab)
 {
+	const struct ath12k_mem_profile_based_param *param;
 	int ret;
 
 	ret = ath12k_hw_init(ab);
@@ -1721,6 +1752,8 @@ int ath12k_core_pre_init(struct ath12k_base *ab)
 		return ret;
 	}
 
+	param = &ath12k_mem_profile_based_param[ATH12K_QMI_MEMORY_MODE_DEFAULT];
+	ab->profile_param = param;
 	ath12k_fw_map(ab);
 
 	return 0;
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index afc8329980c8..b2dcb979dc75 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -1010,6 +1010,22 @@ struct ath12k_wsi_info {
 	u32 hw_link_id_base;
 };
 
+struct ath12k_dp_profile_params {
+	u32 tx_comp_ring_size;
+	u32 rxdma_monitor_buf_ring_size;
+	u32 rxdma_monitor_dst_ring_size;
+	u32 num_pool_tx_desc;
+	u32 rx_desc_count;
+};
+
+struct ath12k_mem_profile_based_param {
+	u32 num_vdevs;
+	u32 max_client_single;
+	u32 max_client_dbs;
+	u32 max_client_dbs_sbs;
+	struct ath12k_dp_profile_params dp_params;
+};
+
 /* Master structure to hold the hw data which may be used in core module */
 struct ath12k_base {
 	enum ath12k_hw_rev hw_rev;
@@ -1213,6 +1229,7 @@ struct ath12k_base {
 	struct ath12k_reg_freq reg_freq_2ghz;
 	struct ath12k_reg_freq reg_freq_5ghz;
 	struct ath12k_reg_freq reg_freq_6ghz;
+	const struct ath12k_mem_profile_based_param *profile_param;
 
 	/* must be last */
 	u8 drv_priv[] __aligned(sizeof(void *));
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index 99e1fb2910d0..5e8943060443 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_TARGET_MEM_MODE_DEFAULT;
+	ab->qmi.target_mem_mode = ATH12K_QMI_MEMORY_MODE_DEFAULT;
 	ret = qmi_handle_init(&ab->qmi.handle, ATH12K_QMI_RESP_LEN_MAX,
 			      &ath12k_qmi_ops, ath12k_qmi_msg_handlers);
 	if (ret < 0) {
diff --git a/drivers/net/wireless/ath/ath12k/qmi.h b/drivers/net/wireless/ath/ath12k/qmi.h
index 96e6c3daecfe..abdaade3b542 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.h
+++ b/drivers/net/wireless/ath/ath12k/qmi.h
@@ -37,7 +37,6 @@
 
 #define QMI_WLANFW_MAX_DATA_SIZE_V01		6144
 #define ATH12K_FIRMWARE_MODE_OFF		4
-#define ATH12K_QMI_TARGET_MEM_MODE_DEFAULT	0
 
 #define ATH12K_BOARD_ID_DEFAULT	0xFF
 
@@ -602,6 +601,11 @@ struct qmi_wlanfw_wlan_ini_resp_msg_v01 {
 	struct qmi_response_type_v01 resp;
 };
 
+enum ath12k_qmi_mem_mode {
+	ATH12K_QMI_MEMORY_MODE_DEFAULT = 0,
+	ATH12K_QMI_MEMORY_MODE_LOW_512_M,
+};
+
 static inline void ath12k_qmi_set_event_block(struct ath12k_qmi *qmi, bool block)
 {
 	lockdep_assert_held(&qmi->event_lock);
-- 
2.34.1