1 files changed, 121 insertions, 57 deletions

diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 2cad76d0a50e..ff5647bcdfca 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -344,6 +344,15 @@
 
 #define MVNETA_MAX_SKB_DESCS (MVNETA_MAX_TSO_SEGS * 2 + MAX_SKB_FRAGS)
 
+/* The size of a TSO header page */
+#define MVNETA_TSO_PAGE_SIZE (2 * PAGE_SIZE)
+
+/* Number of TSO headers per page. This should be a power of 2 */
+#define MVNETA_TSO_PER_PAGE (MVNETA_TSO_PAGE_SIZE / TSO_HEADER_SIZE)
+
+/* Maximum number of TSO header pages */
+#define MVNETA_MAX_TSO_PAGES (MVNETA_MAX_TXD / MVNETA_TSO_PER_PAGE)
+
 /* descriptor aligned size */
 #define MVNETA_DESC_ALIGNED_SIZE	32
 
@@ -364,10 +373,6 @@
 			 MVNETA_SKB_HEADROOM))
 #define MVNETA_MAX_RX_BUF_SIZE	(PAGE_SIZE - MVNETA_SKB_PAD)
 
-#define IS_TSO_HEADER(txq, addr) \
-	((addr >= txq->tso_hdrs_phys) && \
-	 (addr < txq->tso_hdrs_phys + txq->size * TSO_HEADER_SIZE))
-
 #define MVNETA_RX_GET_BM_POOL_ID(rxd) \
 	(((rxd)->status & MVNETA_RXD_BM_POOL_MASK) >> MVNETA_RXD_BM_POOL_SHIFT)
 
@@ -638,6 +643,7 @@ struct mvneta_rx_desc {
 #endif
 
 enum mvneta_tx_buf_type {
+	MVNETA_TYPE_TSO,
 	MVNETA_TYPE_SKB,
 	MVNETA_TYPE_XDP_TX,
 	MVNETA_TYPE_XDP_NDO,
@@ -690,10 +696,10 @@ struct mvneta_tx_queue {
 	int next_desc_to_proc;
 
 	/* DMA buffers for TSO headers */
-	char *tso_hdrs;
+	char *tso_hdrs[MVNETA_MAX_TSO_PAGES];
 
 	/* DMA address of TSO headers */
-	dma_addr_t tso_hdrs_phys;
+	dma_addr_t tso_hdrs_phys[MVNETA_MAX_TSO_PAGES];
 
 	/* Affinity mask for CPUs*/
 	cpumask_t affinity_mask;
@@ -1878,12 +1884,13 @@ static void mvneta_txq_bufs_free(struct mvneta_port *pp,
 
 		mvneta_txq_inc_get(txq);
 
-		if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr) &&
-		    buf->type != MVNETA_TYPE_XDP_TX)
+		if (buf->type == MVNETA_TYPE_XDP_NDO ||
+		    buf->type == MVNETA_TYPE_SKB)
 			dma_unmap_single(pp->dev->dev.parent,
 					 tx_desc->buf_phys_addr,
 					 tx_desc->data_size, DMA_TO_DEVICE);
-		if (buf->type == MVNETA_TYPE_SKB && buf->skb) {
+		if ((buf->type == MVNETA_TYPE_TSO ||
+		     buf->type == MVNETA_TYPE_SKB) && buf->skb) {
 			bytes_compl += buf->skb->len;
 			pkts_compl++;
 			dev_kfree_skb_any(buf->skb);
@@ -2369,9 +2376,8 @@ mvneta_swbm_add_rx_fragment(struct mvneta_port *pp,
 	if (data_len > 0 && sinfo->nr_frags < MAX_SKB_FRAGS) {
 		skb_frag_t *frag = &sinfo->frags[sinfo->nr_frags++];
 
-		skb_frag_off_set(frag, pp->rx_offset_correction);
-		skb_frag_size_set(frag, data_len);
-		__skb_frag_set_page(frag, page);
+		skb_frag_fill_page_desc(frag, page,
+					pp->rx_offset_correction, data_len);
 
 		if (!xdp_buff_has_frags(xdp)) {
 			sinfo->xdp_frags_size = *size;
@@ -2661,20 +2667,72 @@ err_drop_frame:
 	return rx_done;
 }
 
-static inline void
-mvneta_tso_put_hdr(struct sk_buff *skb, struct mvneta_tx_queue *txq)
+static void mvneta_free_tso_hdrs(struct mvneta_port *pp,
+				 struct mvneta_tx_queue *txq)
+{
+	struct device *dev = pp->dev->dev.parent;
+	int i;
+
+	for (i = 0; i < MVNETA_MAX_TSO_PAGES; i++) {
+		if (txq->tso_hdrs[i]) {
+			dma_free_coherent(dev, MVNETA_TSO_PAGE_SIZE,
+					  txq->tso_hdrs[i],
+					  txq->tso_hdrs_phys[i]);
+			txq->tso_hdrs[i] = NULL;
+		}
+	}
+}
+
+static int mvneta_alloc_tso_hdrs(struct mvneta_port *pp,
+				 struct mvneta_tx_queue *txq)
+{
+	struct device *dev = pp->dev->dev.parent;
+	int i, num;
+
+	num = DIV_ROUND_UP(txq->size, MVNETA_TSO_PER_PAGE);
+	for (i = 0; i < num; i++) {
+		txq->tso_hdrs[i] = dma_alloc_coherent(dev, MVNETA_TSO_PAGE_SIZE,
+						      &txq->tso_hdrs_phys[i],
+						      GFP_KERNEL);
+		if (!txq->tso_hdrs[i]) {
+			mvneta_free_tso_hdrs(pp, txq);
+			return -ENOMEM;
+		}
+	}
+
+	return 0;
+}
+
+static char *mvneta_get_tso_hdr(struct mvneta_tx_queue *txq, dma_addr_t *dma)
+{
+	int index, offset;
+
+	index = txq->txq_put_index / MVNETA_TSO_PER_PAGE;
+	offset = (txq->txq_put_index % MVNETA_TSO_PER_PAGE) * TSO_HEADER_SIZE;
+
+	*dma = txq->tso_hdrs_phys[index] + offset;
+
+	return txq->tso_hdrs[index] + offset;
+}
+
+static void mvneta_tso_put_hdr(struct sk_buff *skb, struct mvneta_tx_queue *txq,
+			       struct tso_t *tso, int size, bool is_last)
 {
 	struct mvneta_tx_buf *buf = &txq->buf[txq->txq_put_index];
 	int hdr_len = skb_tcp_all_headers(skb);
 	struct mvneta_tx_desc *tx_desc;
+	dma_addr_t hdr_phys;
+	char *hdr;
+
+	hdr = mvneta_get_tso_hdr(txq, &hdr_phys);
+	tso_build_hdr(skb, hdr, tso, size, is_last);
 
 	tx_desc = mvneta_txq_next_desc_get(txq);
 	tx_desc->data_size = hdr_len;
 	tx_desc->command = mvneta_skb_tx_csum(skb);
 	tx_desc->command |= MVNETA_TXD_F_DESC;
-	tx_desc->buf_phys_addr = txq->tso_hdrs_phys +
-				 txq->txq_put_index * TSO_HEADER_SIZE;
-	buf->type = MVNETA_TYPE_SKB;
+	tx_desc->buf_phys_addr = hdr_phys;
+	buf->type = MVNETA_TYPE_TSO;
 	buf->skb = NULL;
 
 	mvneta_txq_inc_put(txq);
@@ -2714,14 +2772,41 @@ mvneta_tso_put_data(struct net_device *dev, struct mvneta_tx_queue *txq,
 	return 0;
 }
 
+static void mvneta_release_descs(struct mvneta_port *pp,
+				 struct mvneta_tx_queue *txq,
+				 int first, int num)
+{
+	int desc_idx, i;
+
+	desc_idx = first + num;
+	if (desc_idx >= txq->size)
+		desc_idx -= txq->size;
+
+	for (i = num; i >= 0; i--) {
+		struct mvneta_tx_desc *tx_desc = txq->descs + desc_idx;
+		struct mvneta_tx_buf *buf = &txq->buf[desc_idx];
+
+		if (buf->type == MVNETA_TYPE_SKB)
+			dma_unmap_single(pp->dev->dev.parent,
+					 tx_desc->buf_phys_addr,
+					 tx_desc->data_size,
+					 DMA_TO_DEVICE);
+
+		mvneta_txq_desc_put(txq);
+
+		if (desc_idx == 0)
+			desc_idx = txq->size;
+		desc_idx -= 1;
+	}
+}
+
 static int mvneta_tx_tso(struct sk_buff *skb, struct net_device *dev,
 			 struct mvneta_tx_queue *txq)
 {
 	int hdr_len, total_len, data_left;
-	int desc_count = 0;
+	int first_desc, desc_count = 0;
 	struct mvneta_port *pp = netdev_priv(dev);
 	struct tso_t tso;
-	int i;
 
 	/* Count needed descriptors */
 	if ((txq->count + tso_count_descs(skb)) >= txq->size)
@@ -2732,22 +2817,19 @@ static int mvneta_tx_tso(struct sk_buff *skb, struct net_device *dev,
 		return 0;
 	}
 
+	first_desc = txq->txq_put_index;
+
 	/* Initialize the TSO handler, and prepare the first payload */
 	hdr_len = tso_start(skb, &tso);
 
 	total_len = skb->len - hdr_len;
 	while (total_len > 0) {
-		char *hdr;
-
 		data_left = min_t(int, skb_shinfo(skb)->gso_size, total_len);
 		total_len -= data_left;
 		desc_count++;
 
 		/* prepare packet headers: MAC + IP + TCP */
-		hdr = txq->tso_hdrs + txq->txq_put_index * TSO_HEADER_SIZE;
-		tso_build_hdr(skb, hdr, &tso, data_left, total_len == 0);
-
-		mvneta_tso_put_hdr(skb, txq);
+		mvneta_tso_put_hdr(skb, txq, &tso, data_left, total_len == 0);
 
 		while (data_left > 0) {
 			int size;
@@ -2772,15 +2854,7 @@ err_release:
 	/* Release all used data descriptors; header descriptors must not
 	 * be DMA-unmapped.
 	 */
-	for (i = desc_count - 1; i >= 0; i--) {
-		struct mvneta_tx_desc *tx_desc = txq->descs + i;
-		if (!IS_TSO_HEADER(txq, tx_desc->buf_phys_addr))
-			dma_unmap_single(pp->dev->dev.parent,
-					 tx_desc->buf_phys_addr,
-					 tx_desc->data_size,
-					 DMA_TO_DEVICE);
-		mvneta_txq_desc_put(txq);
-	}
+	mvneta_release_descs(pp, txq, first_desc, desc_count - 1);
 	return 0;
 }
 
@@ -2790,6 +2864,7 @@ static int mvneta_tx_frag_process(struct mvneta_port *pp, struct sk_buff *skb,
 {
 	struct mvneta_tx_desc *tx_desc;
 	int i, nr_frags = skb_shinfo(skb)->nr_frags;
+	int first_desc = txq->txq_put_index;
 
 	for (i = 0; i < nr_frags; i++) {
 		struct mvneta_tx_buf *buf = &txq->buf[txq->txq_put_index];
@@ -2828,15 +2903,7 @@ error:
 	/* Release all descriptors that were used to map fragments of
 	 * this packet, as well as the corresponding DMA mappings
 	 */
-	for (i = i - 1; i >= 0; i--) {
-		tx_desc = txq->descs + i;
-		dma_unmap_single(pp->dev->dev.parent,
-				 tx_desc->buf_phys_addr,
-				 tx_desc->data_size,
-				 DMA_TO_DEVICE);
-		mvneta_txq_desc_put(txq);
-	}
-
+	mvneta_release_descs(pp, txq, first_desc, i - 1);
 	return -ENOMEM;
 }
 
@@ -3457,7 +3524,7 @@ static void mvneta_rxq_deinit(struct mvneta_port *pp,
 static int mvneta_txq_sw_init(struct mvneta_port *pp,
 			      struct mvneta_tx_queue *txq)
 {
-	int cpu;
+	int cpu, err;
 
 	txq->size = pp->tx_ring_size;
 
@@ -3482,11 +3549,9 @@ static int mvneta_txq_sw_init(struct mvneta_port *pp,
 		return -ENOMEM;
 
 	/* Allocate DMA buffers for TSO MAC/IP/TCP headers */
-	txq->tso_hdrs = dma_alloc_coherent(pp->dev->dev.parent,
-					   txq->size * TSO_HEADER_SIZE,
-					   &txq->tso_hdrs_phys, GFP_KERNEL);
-	if (!txq->tso_hdrs)
-		return -ENOMEM;
+	err = mvneta_alloc_tso_hdrs(pp, txq);
+	if (err)
+		return err;
 
 	/* Setup XPS mapping */
 	if (pp->neta_armada3700)
@@ -3538,10 +3603,7 @@ static void mvneta_txq_sw_deinit(struct mvneta_port *pp,
 
 	kfree(txq->buf);
 
-	if (txq->tso_hdrs)
-		dma_free_coherent(pp->dev->dev.parent,
-				  txq->size * TSO_HEADER_SIZE,
-				  txq->tso_hdrs, txq->tso_hdrs_phys);
+	mvneta_free_tso_hdrs(pp, txq);
 	if (txq->descs)
 		dma_free_coherent(pp->dev->dev.parent,
 				  txq->size * MVNETA_DESC_ALIGNED_SIZE,
@@ -3550,7 +3612,6 @@ static void mvneta_txq_sw_deinit(struct mvneta_port *pp,
 	netdev_tx_reset_queue(nq);
 
 	txq->buf               = NULL;
-	txq->tso_hdrs          = NULL;
 	txq->descs             = NULL;
 	txq->last_desc         = 0;
 	txq->next_desc_to_proc = 0;
@@ -3941,8 +4002,8 @@ static void mvneta_pcs_get_state(struct phylink_pcs *pcs,
 		state->pause |= MLO_PAUSE_TX;
 }
 
-static int mvneta_pcs_config(struct phylink_pcs *pcs,
-			     unsigned int mode, phy_interface_t interface,
+static int mvneta_pcs_config(struct phylink_pcs *pcs, unsigned int neg_mode,
+			     phy_interface_t interface,
 			     const unsigned long *advertising,
 			     bool permit_pause_to_mac)
 {
@@ -3955,7 +4016,7 @@ static int mvneta_pcs_config(struct phylink_pcs *pcs,
 	       MVNETA_GMAC_AN_FLOW_CTRL_EN |
 	       MVNETA_GMAC_AN_DUPLEX_EN;
 
-	if (phylink_autoneg_inband(mode)) {
+	if (neg_mode == PHYLINK_PCS_NEG_INBAND_ENABLED) {
 		mask |= MVNETA_GMAC_CONFIG_MII_SPEED |
 			MVNETA_GMAC_CONFIG_GMII_SPEED |
 			MVNETA_GMAC_CONFIG_FULL_DUPLEX;
@@ -5457,6 +5518,7 @@ static int mvneta_probe(struct platform_device *pdev)
 		clk_prepare_enable(pp->clk_bus);
 
 	pp->phylink_pcs.ops = &mvneta_phylink_pcs_ops;
+	pp->phylink_pcs.neg_mode = true;
 
 	pp->phylink_config.dev = &dev->dev;
 	pp->phylink_config.type = PHYLINK_NETDEV;
@@ -5821,6 +5883,8 @@ static int __init mvneta_driver_init(void)
 {
 	int ret;
 
+	BUILD_BUG_ON_NOT_POWER_OF_2(MVNETA_TSO_PER_PAGE);
+
 	ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "net/mvneta:online",
 				      mvneta_cpu_online,
 				      mvneta_cpu_down_prepare);