1 files changed, 27 insertions, 44 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
index 28e4b5d50ce6..382d94a3b972 100644
--- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
+++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*******************************************************************************
   Specialised functions for managing Ring mode
 
@@ -7,26 +8,15 @@
   descriptors in case of the DMA is configured to work in chained or
   in ring mode.
 
-  This program is free software; you can redistribute it and/or modify it
-  under the terms and conditions of the GNU General Public License,
-  version 2, as published by the Free Software Foundation.
-
-  This program is distributed in the hope it will be useful, but WITHOUT
-  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-  more details.
-
-  The full GNU General Public License is included in this distribution in
-  the file called "COPYING".
 
   Author: Giuseppe Cavallaro <peppe.cavallaro@st.com>
 *******************************************************************************/
 
 #include "stmmac.h"
 
-static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
+static int jumbo_frm(struct stmmac_tx_queue *tx_q, struct sk_buff *skb,
+		     int csum)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)p;
 	unsigned int nopaged_len = skb_headlen(skb);
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->cur_tx;
@@ -58,11 +48,10 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 		tx_q->tx_skbuff_dma[entry].is_jumbo = true;
 
 		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
-		priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum,
-						STMMAC_RING_MODE, 0,
-						false, skb->len);
+		stmmac_prepare_tx_desc(priv, desc, 1, bmax, csum,
+				STMMAC_RING_MODE, 0, false, skb->len);
 		tx_q->tx_skbuff[entry] = NULL;
-		entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE);
+		entry = STMMAC_GET_ENTRY(entry, priv->dma_conf.dma_tx_size);
 
 		if (priv->extend_desc)
 			desc = (struct dma_desc *)(tx_q->dma_etx + entry);
@@ -79,9 +68,9 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 		tx_q->tx_skbuff_dma[entry].is_jumbo = true;
 
 		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
-		priv->hw->desc->prepare_tx_desc(desc, 0, len, csum,
-						STMMAC_RING_MODE, 1,
-						true, skb->len);
+		stmmac_prepare_tx_desc(priv, desc, 0, len, csum,
+				STMMAC_RING_MODE, 1, !skb_is_nonlinear(skb),
+				skb->len);
 	} else {
 		des2 = dma_map_single(priv->device, skb->data,
 				      nopaged_len, DMA_TO_DEVICE);
@@ -92,9 +81,9 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 		tx_q->tx_skbuff_dma[entry].len = nopaged_len;
 		tx_q->tx_skbuff_dma[entry].is_jumbo = true;
 		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
-		priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, csum,
-						STMMAC_RING_MODE, 0,
-						true, skb->len);
+		stmmac_prepare_tx_desc(priv, desc, 1, nopaged_len, csum,
+				STMMAC_RING_MODE, 0, !skb_is_nonlinear(skb),
+				skb->len);
 	}
 
 	tx_q->cur_tx = entry;
@@ -102,34 +91,28 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 	return entry;
 }
 
-static unsigned int stmmac_is_jumbo_frm(int len, int enh_desc)
+static bool is_jumbo_frm(unsigned int len, bool enh_desc)
 {
-	unsigned int ret = 0;
-
-	if (len >= BUF_SIZE_4KiB)
-		ret = 1;
-
-	return ret;
+	return len >= BUF_SIZE_4KiB;
 }
 
-static void stmmac_refill_desc3(void *priv_ptr, struct dma_desc *p)
+static void refill_desc3(struct stmmac_rx_queue *rx_q, struct dma_desc *p)
 {
-	struct stmmac_priv *priv = (struct stmmac_priv *)priv_ptr;
+	struct stmmac_priv *priv = rx_q->priv_data;
 
 	/* Fill DES3 in case of RING mode */
-	if (priv->dma_buf_sz >= BUF_SIZE_8KiB)
+	if (priv->dma_conf.dma_buf_sz == BUF_SIZE_16KiB)
 		p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
 }
 
 /* In ring mode we need to fill the desc3 because it is used as buffer */
-static void stmmac_init_desc3(struct dma_desc *p)
+static void init_desc3(struct dma_desc *p)
 {
 	p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
 }
 
-static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
+static void clean_desc3(struct stmmac_tx_queue *tx_q, struct dma_desc *p)
 {
-	struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)priv_ptr;
 	struct stmmac_priv *priv = tx_q->priv_data;
 	unsigned int entry = tx_q->dirty_tx;
 
@@ -140,19 +123,19 @@ static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
 		p->des3 = 0;
 }
 
-static int stmmac_set_16kib_bfsize(int mtu)
+static int set_16kib_bfsize(int mtu)
 {
 	int ret = 0;
-	if (unlikely(mtu >= BUF_SIZE_8KiB))
+	if (unlikely(mtu > BUF_SIZE_8KiB))
 		ret = BUF_SIZE_16KiB;
 	return ret;
 }
 
 const struct stmmac_mode_ops ring_mode_ops = {
-	.is_jumbo_frm = stmmac_is_jumbo_frm,
-	.jumbo_frm = stmmac_jumbo_frm,
-	.refill_desc3 = stmmac_refill_desc3,
-	.init_desc3 = stmmac_init_desc3,
-	.clean_desc3 = stmmac_clean_desc3,
-	.set_16kib_bfsize = stmmac_set_16kib_bfsize,
+	.is_jumbo_frm = is_jumbo_frm,
+	.jumbo_frm = jumbo_frm,
+	.refill_desc3 = refill_desc3,
+	.init_desc3 = init_desc3,
+	.clean_desc3 = clean_desc3,
+	.set_16kib_bfsize = set_16kib_bfsize,
 };