wifi: ath12k: Refactor idle ring descriptor setup

Currently, the WBM idle ring descriptor setup uses implicit value
HAL_RX_BUF_RBM_WBM_DEV0_IDLE_DESC_LIST for the return buffer manager
parameter. To support inter-device MLO (Multi-link operation), this
parameter needs to be configure dynamically based on the device identifier
within the MLO group. Therefore, introduce a new argument to the helper
function ath12k_hal_set_link_desc_addr().

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240430165811.1377182-3-quic_periyasa@quicinc.com

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

@@ -616,6 +616,7 @@ static int ath12k_dp_scatter_idle_link_desc_setup(struct ath12k_base *ab,
 	int i;
 	int ret = 0;
 	u32 end_offset, cookie;
+	enum hal_rx_buf_return_buf_manager rbm = dp->idle_link_rbm;
 
 	n_entries_per_buf = HAL_WBM_IDLE_SCATTER_BUF_SIZE /
 		ath12k_hal_srng_get_entrysize(ab, HAL_WBM_IDLE_LINK);
@@ -646,7 +647,8 @@ static int ath12k_dp_scatter_idle_link_desc_setup(struct ath12k_base *ab,
 		paddr = link_desc_banks[i].paddr;
 		while (n_entries) {
 			cookie = DP_LINK_DESC_COOKIE_SET(n_entries, i);
-			ath12k_hal_set_link_desc_addr(scatter_buf, cookie, paddr);
+			ath12k_hal_set_link_desc_addr(scatter_buf, cookie,
+						      paddr, rbm);
 			n_entries--;
 			paddr += HAL_LINK_DESC_SIZE;
 			if (rem_entries) {
@@ -790,6 +792,7 @@ int ath12k_dp_link_desc_setup(struct ath12k_base *ab,
 	u32 paddr;
 	int i, ret;
 	u32 cookie;
+	enum hal_rx_buf_return_buf_manager rbm = ab->dp.idle_link_rbm;
 
 	tot_mem_sz = n_link_desc * HAL_LINK_DESC_SIZE;
 	tot_mem_sz += HAL_LINK_DESC_ALIGN;
@@ -850,8 +853,7 @@ int ath12k_dp_link_desc_setup(struct ath12k_base *ab,
 		while (n_entries &&
 		       (desc = ath12k_hal_srng_src_get_next_entry(ab, srng))) {
 			cookie = DP_LINK_DESC_COOKIE_SET(n_entries, i);
-			ath12k_hal_set_link_desc_addr(desc,
-						      cookie, paddr);
+			ath12k_hal_set_link_desc_addr(desc, cookie, paddr, rbm);
 			n_entries--;
 			paddr += HAL_LINK_DESC_SIZE;
 		}
@@ -1603,6 +1605,7 @@ int ath12k_dp_alloc(struct ath12k_base *ab)
 	spin_lock_init(&dp->reo_cmd_lock);
 
 	dp->reo_cmd_cache_flush_count = 0;
+	dp->idle_link_rbm = HAL_RX_BUF_RBM_WBM_DEV0_IDLE_DESC_LIST;
 
 	ret = ath12k_wbm_idle_ring_setup(ab, &n_link_desc);
 	if (ret) {

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

@@ -325,6 +325,7 @@ struct ath12k_dp {
 	u8 htt_tgt_ver_major;
 	u8 htt_tgt_ver_minor;
 	struct dp_link_desc_bank link_desc_banks[DP_LINK_DESC_BANKS_MAX];
+	enum hal_rx_buf_return_buf_manager idle_link_rbm;
 	struct dp_srng wbm_idle_ring;
 	struct dp_srng wbm_desc_rel_ring;
 	struct dp_srng tcl_cmd_ring;

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

@@ -2994,6 +2994,7 @@ static int ath12k_dp_rx_h_defrag_reo_reinject(struct ath12k *ar,
 	u32 cookie, hal_rx_desc_sz, dest_ring_info0;
 	int ret;
 	struct ath12k_rx_desc_info *desc_info;
+	enum hal_rx_buf_return_buf_manager idle_link_rbm = dp->idle_link_rbm;
 	u8 dst_ind;
 
 	hal_rx_desc_sz = ab->hal.hal_desc_sz;
@@ -3071,7 +3072,7 @@ static int ath12k_dp_rx_h_defrag_reo_reinject(struct ath12k *ar,
 
 	ath12k_hal_rx_buf_addr_info_set(&reo_ent_ring->buf_addr_info, link_paddr,
 					cookie,
-					HAL_RX_BUF_RBM_WBM_DEV0_IDLE_DESC_LIST);
+					idle_link_rbm);
 
 	mpdu_info = u32_encode_bits(1, RX_MPDU_DESC_INFO0_MSDU_COUNT) |
 		    u32_encode_bits(0, RX_MPDU_DESC_INFO0_FRAG_FLAG) |
@@ -3451,7 +3452,7 @@ int ath12k_dp_rx_process_err(struct ath12k_base *ab, struct napi_struct *napi,
 			       (paddr - link_desc_banks[desc_bank].paddr);
 		ath12k_hal_rx_msdu_link_info_get(link_desc_va, &num_msdus, msdu_cookies,
 						 &rbm);
-		if (rbm != HAL_RX_BUF_RBM_WBM_DEV0_IDLE_DESC_LIST &&
+		if (rbm != dp->idle_link_rbm &&
 		    rbm != HAL_RX_BUF_RBM_SW3_BM &&
 		    rbm != ab->hw_params->hal_params->rx_buf_rbm) {
 			ab->soc_stats.invalid_rbm++;

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

@@ -1969,14 +1969,15 @@ u32 ath12k_hal_ce_dst_status_get_length(struct hal_ce_srng_dst_status_desc *desc
 }
 
 void ath12k_hal_set_link_desc_addr(struct hal_wbm_link_desc *desc, u32 cookie,
-				   dma_addr_t paddr)
+				   dma_addr_t paddr,
+				   enum hal_rx_buf_return_buf_manager rbm)
 {
 	desc->buf_addr_info.info0 = le32_encode_bits((paddr & HAL_ADDR_LSB_REG_MASK),
 						     BUFFER_ADDR_INFO0_ADDR);
 	desc->buf_addr_info.info1 =
 			le32_encode_bits(((u64)paddr >> HAL_ADDR_MSB_REG_SHIFT),
 					 BUFFER_ADDR_INFO1_ADDR) |
-			le32_encode_bits(1, BUFFER_ADDR_INFO1_RET_BUF_MGR) |
+			le32_encode_bits(rbm, BUFFER_ADDR_INFO1_RET_BUF_MGR) |
 			le32_encode_bits(cookie, BUFFER_ADDR_INFO1_SW_COOKIE);
 }
 

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

@@ -1113,7 +1113,8 @@ dma_addr_t ath12k_hal_srng_get_tp_addr(struct ath12k_base *ab,
 dma_addr_t ath12k_hal_srng_get_hp_addr(struct ath12k_base *ab,
 				       struct hal_srng *srng);
 void ath12k_hal_set_link_desc_addr(struct hal_wbm_link_desc *desc, u32 cookie,
-				   dma_addr_t paddr);
+				   dma_addr_t paddr,
+				   enum hal_rx_buf_return_buf_manager rbm);
 u32 ath12k_hal_ce_get_desc_size(enum hal_ce_desc type);
 void ath12k_hal_ce_src_set_desc(struct hal_ce_srng_src_desc *desc, dma_addr_t paddr,
 				u32 len, u32 id, u8 byte_swap_data);