ath10k: Add support for 64 bit HTT frag descriptor

WCN3990 target uses 64 bit frag descriptor and more
fields in TSO flag.
Add support for 64 bit HTT frag descriptor.

Signed-off-by: Govind Singh <govinds@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

drivers/net/wireless/ath/ath10k/htt.c

@@ -256,7 +256,7 @@ int ath10k_htt_setup(struct ath10k_htt *htt)
 		return status;
 	}
 
-	status = ath10k_htt_send_frag_desc_bank_cfg(htt);
+	status = htt->tx_ops->htt_send_frag_desc_bank_cfg(htt);
 	if (status)
 		return status;
 

drivers/net/wireless/ath/ath10k/htt.h

@@ -107,6 +107,14 @@ struct htt_msdu_ext_desc {
 	struct htt_data_tx_desc_frag frags[6];
 };
 
+struct htt_msdu_ext_desc_64 {
+	__le32 tso_flag[5];
+	__le16 ip_identification;
+	u8 flags;
+	u8 reserved;
+	struct htt_data_tx_desc_frag frags[6];
+};
+
 #define	HTT_MSDU_EXT_DESC_FLAG_IPV4_CSUM_ENABLE		BIT(0)
 #define	HTT_MSDU_EXT_DESC_FLAG_UDP_IPV4_CSUM_ENABLE	BIT(1)
 #define	HTT_MSDU_EXT_DESC_FLAG_UDP_IPV6_CSUM_ENABLE	BIT(2)
@@ -1387,7 +1395,7 @@ struct htt_q_state_conf {
 	u8 pad[2];
 } __packed;
 
-struct htt_frag_desc_bank_cfg {
+struct htt_frag_desc_bank_cfg32 {
 	u8 info; /* HTT_FRAG_DESC_BANK_CFG_INFO_ */
 	u8 num_banks;
 	u8 desc_size;
@@ -1396,6 +1404,15 @@ struct htt_frag_desc_bank_cfg {
 	struct htt_q_state_conf q_state;
 } __packed;
 
+struct htt_frag_desc_bank_cfg64 {
+	u8 info; /* HTT_FRAG_DESC_BANK_CFG_INFO_ */
+	u8 num_banks;
+	u8 desc_size;
+	__le64 bank_base_addrs[HTT_FRAG_DESC_BANK_MAX];
+	struct htt_frag_desc_bank_id bank_id[HTT_FRAG_DESC_BANK_MAX];
+	struct htt_q_state_conf q_state;
+} __packed;
+
 #define HTT_TX_Q_STATE_ENTRY_COEFFICIENT	128
 #define HTT_TX_Q_STATE_ENTRY_FACTOR_MASK	0x3f
 #define HTT_TX_Q_STATE_ENTRY_FACTOR_LSB		0
@@ -1572,7 +1589,8 @@ struct htt_cmd {
 		struct htt_stats_req stats_req;
 		struct htt_oob_sync_req oob_sync_req;
 		struct htt_aggr_conf aggr_conf;
-		struct htt_frag_desc_bank_cfg frag_desc_bank_cfg;
+		struct htt_frag_desc_bank_cfg32 frag_desc_bank_cfg32;
+		struct htt_frag_desc_bank_cfg64 frag_desc_bank_cfg64;
 		struct htt_tx_fetch_resp tx_fetch_resp;
 	};
 } __packed;
@@ -1758,7 +1776,11 @@ struct ath10k_htt {
 
 	struct {
 		dma_addr_t paddr;
-		struct htt_msdu_ext_desc *vaddr;
+		union {
+			struct htt_msdu_ext_desc *vaddr_desc_32;
+			struct htt_msdu_ext_desc_64 *vaddr_desc_64;
+		};
+		size_t size;
 	} frag_desc;
 
 	struct {
@@ -1783,6 +1805,9 @@ struct ath10k_htt {
 
 struct ath10k_htt_tx_ops {
 	int (*htt_send_rx_ring_cfg)(struct ath10k_htt *htt);
+	int (*htt_send_frag_desc_bank_cfg)(struct ath10k_htt *htt);
+	int (*htt_alloc_frag_desc)(struct ath10k_htt *htt);
+	void (*htt_free_frag_desc)(struct ath10k_htt *htt);
 };
 
 #define RX_HTT_HDR_STATUS_LEN 64
@@ -1862,7 +1887,6 @@ void ath10k_htt_htc_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb);
 bool ath10k_htt_t2h_msg_handler(struct ath10k *ar, struct sk_buff *skb);
 int ath10k_htt_h2t_ver_req_msg(struct ath10k_htt *htt);
 int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie);
-int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt);
 int ath10k_htt_send_rx_ring_cfg_ll(struct ath10k_htt *htt);
 int ath10k_htt_h2t_aggr_cfg_msg(struct ath10k_htt *htt,
 				u8 max_subfrms_ampdu,

drivers/net/wireless/ath/ath10k/htt_tx.c

@@ -256,23 +256,25 @@ static int ath10k_htt_tx_alloc_cont_txbuf(struct ath10k_htt *htt)
 	return 0;
 }
 
-static void ath10k_htt_tx_free_cont_frag_desc(struct ath10k_htt *htt)
+static void ath10k_htt_tx_free_cont_frag_desc_32(struct ath10k_htt *htt)
 {
 	size_t size;
 
-	if (!htt->frag_desc.vaddr)
+	if (!htt->frag_desc.vaddr_desc_32)
 		return;
 
-	size = htt->max_num_pending_tx * sizeof(struct htt_msdu_ext_desc);
+	size = htt->max_num_pending_tx *
+			sizeof(struct htt_msdu_ext_desc);
 
 	dma_free_coherent(htt->ar->dev,
 			  size,
-			  htt->frag_desc.vaddr,
+			  htt->frag_desc.vaddr_desc_32,
 			  htt->frag_desc.paddr);
-	htt->frag_desc.vaddr = NULL;
+
+	htt->frag_desc.vaddr_desc_32 = NULL;
 }
 
-static int ath10k_htt_tx_alloc_cont_frag_desc(struct ath10k_htt *htt)
+static int ath10k_htt_tx_alloc_cont_frag_desc_32(struct ath10k_htt *htt)
 {
 	struct ath10k *ar = htt->ar;
 	size_t size;
@@ -280,12 +282,57 @@ static int ath10k_htt_tx_alloc_cont_frag_desc(struct ath10k_htt *htt)
 	if (!ar->hw_params.continuous_frag_desc)
 		return 0;
 
-	size = htt->max_num_pending_tx * sizeof(struct htt_msdu_ext_desc);
-	htt->frag_desc.vaddr = dma_alloc_coherent(ar->dev, size,
-						  &htt->frag_desc.paddr,
-						  GFP_KERNEL);
-	if (!htt->frag_desc.vaddr)
+	size = htt->max_num_pending_tx *
+			sizeof(struct htt_msdu_ext_desc);
+	htt->frag_desc.vaddr_desc_32 = dma_alloc_coherent(ar->dev, size,
+							  &htt->frag_desc.paddr,
+							  GFP_KERNEL);
+	if (!htt->frag_desc.vaddr_desc_32) {
+		ath10k_err(ar, "failed to alloc fragment desc memory\n");
 		return -ENOMEM;
+	}
+	htt->frag_desc.size = size;
+
+	return 0;
+}
+
+static void ath10k_htt_tx_free_cont_frag_desc_64(struct ath10k_htt *htt)
+{
+	size_t size;
+
+	if (!htt->frag_desc.vaddr_desc_64)
+		return;
+
+	size = htt->max_num_pending_tx *
+			sizeof(struct htt_msdu_ext_desc_64);
+
+	dma_free_coherent(htt->ar->dev,
+			  size,
+			  htt->frag_desc.vaddr_desc_64,
+			  htt->frag_desc.paddr);
+
+	htt->frag_desc.vaddr_desc_64 = NULL;
+}
+
+static int ath10k_htt_tx_alloc_cont_frag_desc_64(struct ath10k_htt *htt)
+{
+	struct ath10k *ar = htt->ar;
+	size_t size;
+
+	if (!ar->hw_params.continuous_frag_desc)
+		return 0;
+
+	size = htt->max_num_pending_tx *
+			sizeof(struct htt_msdu_ext_desc_64);
+
+	htt->frag_desc.vaddr_desc_64 = dma_alloc_coherent(ar->dev, size,
+							  &htt->frag_desc.paddr,
+							  GFP_KERNEL);
+	if (!htt->frag_desc.vaddr_desc_64) {
+		ath10k_err(ar, "failed to alloc fragment desc memory\n");
+		return -ENOMEM;
+	}
+	htt->frag_desc.size = size;
 
 	return 0;
 }
@@ -363,7 +410,7 @@ static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt)
 		return ret;
 	}
 
-	ret = ath10k_htt_tx_alloc_cont_frag_desc(htt);
+	ret = htt->tx_ops->htt_alloc_frag_desc(htt);
 	if (ret) {
 		ath10k_err(ar, "failed to alloc cont frag desc: %d\n", ret);
 		goto free_txbuf;
@@ -387,7 +434,7 @@ static int ath10k_htt_tx_alloc_buf(struct ath10k_htt *htt)
 	ath10k_htt_tx_free_txq(htt);
 
 free_frag_desc:
-	ath10k_htt_tx_free_cont_frag_desc(htt);
+	htt->tx_ops->htt_free_frag_desc(htt);
 
 free_txbuf:
 	ath10k_htt_tx_free_cont_txbuf(htt);
@@ -446,7 +493,7 @@ void ath10k_htt_tx_destroy(struct ath10k_htt *htt)
 
 	ath10k_htt_tx_free_cont_txbuf(htt);
 	ath10k_htt_tx_free_txq(htt);
-	ath10k_htt_tx_free_cont_frag_desc(htt);
+	htt->tx_ops->htt_free_frag_desc(htt);
 	ath10k_htt_tx_free_txdone_fifo(htt);
 	htt->tx_mem_allocated = false;
 }
@@ -545,12 +592,12 @@ int ath10k_htt_h2t_stats_req(struct ath10k_htt *htt, u8 mask, u64 cookie)
 	return 0;
 }
 
-int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
+static int ath10k_htt_send_frag_desc_bank_cfg_32(struct ath10k_htt *htt)
 {
 	struct ath10k *ar = htt->ar;
 	struct sk_buff *skb;
 	struct htt_cmd *cmd;
-	struct htt_frag_desc_bank_cfg *cfg;
+	struct htt_frag_desc_bank_cfg32 *cfg;
 	int ret, size;
 	u8 info;
 
@@ -562,7 +609,7 @@ int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
 		return -EINVAL;
 	}
 
-	size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg);
+	size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg32);
 	skb = ath10k_htc_alloc_skb(ar, size);
 	if (!skb)
 		return -ENOMEM;
@@ -579,7 +626,7 @@ int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
 		     ar->running_fw->fw_file.fw_features))
 		info |= HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID;
 
-	cfg = &cmd->frag_desc_bank_cfg;
+	cfg = &cmd->frag_desc_bank_cfg32;
 	cfg->info = info;
 	cfg->num_banks = 1;
 	cfg->desc_size = sizeof(struct htt_msdu_ext_desc);
@@ -607,6 +654,68 @@ int ath10k_htt_send_frag_desc_bank_cfg(struct ath10k_htt *htt)
 	return 0;
 }
 
+static int ath10k_htt_send_frag_desc_bank_cfg_64(struct ath10k_htt *htt)
+{
+	struct ath10k *ar = htt->ar;
+	struct sk_buff *skb;
+	struct htt_cmd *cmd;
+	struct htt_frag_desc_bank_cfg64 *cfg;
+	int ret, size;
+	u8 info;
+
+	if (!ar->hw_params.continuous_frag_desc)
+		return 0;
+
+	if (!htt->frag_desc.paddr) {
+		ath10k_warn(ar, "invalid frag desc memory\n");
+		return -EINVAL;
+	}
+
+	size = sizeof(cmd->hdr) + sizeof(cmd->frag_desc_bank_cfg64);
+	skb = ath10k_htc_alloc_skb(ar, size);
+	if (!skb)
+		return -ENOMEM;
+
+	skb_put(skb, size);
+	cmd = (struct htt_cmd *)skb->data;
+	cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_FRAG_DESC_BANK_CFG;
+
+	info = 0;
+	info |= SM(htt->tx_q_state.type,
+		   HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_DEPTH_TYPE);
+
+	if (test_bit(ATH10K_FW_FEATURE_PEER_FLOW_CONTROL,
+		     ar->running_fw->fw_file.fw_features))
+		info |= HTT_FRAG_DESC_BANK_CFG_INFO_Q_STATE_VALID;
+
+	cfg = &cmd->frag_desc_bank_cfg64;
+	cfg->info = info;
+	cfg->num_banks = 1;
+	cfg->desc_size = sizeof(struct htt_msdu_ext_desc_64);
+	cfg->bank_base_addrs[0] =  __cpu_to_le64(htt->frag_desc.paddr);
+	cfg->bank_id[0].bank_min_id = 0;
+	cfg->bank_id[0].bank_max_id = __cpu_to_le16(htt->max_num_pending_tx -
+						    1);
+
+	cfg->q_state.paddr = cpu_to_le32(htt->tx_q_state.paddr);
+	cfg->q_state.num_peers = cpu_to_le16(htt->tx_q_state.num_peers);
+	cfg->q_state.num_tids = cpu_to_le16(htt->tx_q_state.num_tids);
+	cfg->q_state.record_size = HTT_TX_Q_STATE_ENTRY_SIZE;
+	cfg->q_state.record_multiplier = HTT_TX_Q_STATE_ENTRY_MULTIPLIER;
+
+	ath10k_dbg(ar, ATH10K_DBG_HTT, "htt frag desc bank cmd\n");
+
+	ret = ath10k_htc_send(&htt->ar->htc, htt->eid, skb);
+	if (ret) {
+		ath10k_warn(ar, "failed to send frag desc bank cfg request: %d\n",
+			    ret);
+		dev_kfree_skb_any(skb);
+		return ret;
+	}
+
+	return 0;
+}
+
 static void ath10k_htt_fill_rx_desc_offset_32(void *rx_ring)
 {
 	struct htt_rx_ring_setup_ring32 *ring =
@@ -1010,6 +1119,7 @@ int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
 	u32 frags_paddr = 0;
 	u32 txbuf_paddr;
 	struct htt_msdu_ext_desc *ext_desc = NULL;
+	struct htt_msdu_ext_desc *ext_desc_t = NULL;
 
 	spin_lock_bh(&htt->tx_lock);
 	res = ath10k_htt_tx_alloc_msdu_id(htt, msdu);
@@ -1055,11 +1165,12 @@ int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
 		/* pass through */
 	case ATH10K_HW_TXRX_ETHERNET:
 		if (ar->hw_params.continuous_frag_desc) {
-			memset(&htt->frag_desc.vaddr[msdu_id], 0,
+			ext_desc_t = htt->frag_desc.vaddr_desc_32;
+			memset(&ext_desc_t[msdu_id], 0,
 			       sizeof(struct htt_msdu_ext_desc));
 			frags = (struct htt_data_tx_desc_frag *)
-				&htt->frag_desc.vaddr[msdu_id].frags;
-			ext_desc = &htt->frag_desc.vaddr[msdu_id];
+				&ext_desc_t[msdu_id].frags;
+			ext_desc = &ext_desc_t[msdu_id];
 			frags[0].tword_addr.paddr_lo =
 				__cpu_to_le32(skb_cb->paddr);
 			frags[0].tword_addr.paddr_hi = 0;
@@ -1189,10 +1300,16 @@ int ath10k_htt_tx(struct ath10k_htt *htt, enum ath10k_hw_txrx_mode txmode,
 
 static const struct ath10k_htt_tx_ops htt_tx_ops_32 = {
 	.htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_32,
+	.htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_32,
+	.htt_alloc_frag_desc = ath10k_htt_tx_alloc_cont_frag_desc_32,
+	.htt_free_frag_desc = ath10k_htt_tx_free_cont_frag_desc_32,
 };
 
 static const struct ath10k_htt_tx_ops htt_tx_ops_64 = {
 	.htt_send_rx_ring_cfg = ath10k_htt_send_rx_ring_cfg_64,
+	.htt_send_frag_desc_bank_cfg = ath10k_htt_send_frag_desc_bank_cfg_64,
+	.htt_alloc_frag_desc = ath10k_htt_tx_alloc_cont_frag_desc_64,
+	.htt_free_frag_desc = ath10k_htt_tx_free_cont_frag_desc_64,
 };
 
 void ath10k_htt_set_tx_ops(struct ath10k_htt *htt)