1 files changed, 176 insertions, 95 deletions

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index c09370eab319..35634c516e26 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -3,6 +3,7 @@
 
 #include "enetc.h"
 #include <linux/bpf_trace.h>
+#include <linux/clk.h>
 #include <linux/tcp.h>
 #include <linux/udp.h>
 #include <linux/vmalloc.h>
@@ -21,7 +22,7 @@ void enetc_port_mac_wr(struct enetc_si *si, u32 reg, u32 val)
 {
 	enetc_port_wr(&si->hw, reg, val);
 	if (si->hw_features & ENETC_SI_F_QBU)
-		enetc_port_wr(&si->hw, reg + ENETC_PMAC_OFFSET, val);
+		enetc_port_wr(&si->hw, reg + si->drvdata->pmac_offset, val);
 }
 EXPORT_SYMBOL_GPL(enetc_port_mac_wr);
 
@@ -700,8 +701,9 @@ static void enetc_rx_dim_work(struct work_struct *w)
 		net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
 	struct enetc_int_vector	*v =
 		container_of(dim, struct enetc_int_vector, rx_dim);
+	struct enetc_ndev_priv *priv = netdev_priv(v->rx_ring.ndev);
 
-	v->rx_ictt = enetc_usecs_to_cycles(moder.usec);
+	v->rx_ictt = enetc_usecs_to_cycles(moder.usec, priv->sysclk_freq);
 	dim->state = DIM_START_MEASURE;
 }
 
@@ -718,7 +720,7 @@ static void enetc_rx_net_dim(struct enetc_int_vector *v)
 			  v->rx_ring.stats.packets,
 			  v->rx_ring.stats.bytes,
 			  &dim_sample);
-	net_dim(&v->rx_dim, dim_sample);
+	net_dim(&v->rx_dim, &dim_sample);
 }
 
 static int enetc_bd_ready_count(struct enetc_bdr *tx_ring, int ci)
@@ -1736,9 +1738,15 @@ void enetc_get_si_caps(struct enetc_si *si)
 	si->num_rx_rings = (val >> 16) & 0xff;
 	si->num_tx_rings = val & 0xff;
 
-	val = enetc_rd(hw, ENETC_SIRFSCAPR);
-	si->num_fs_entries = ENETC_SIRFSCAPR_GET_NUM_RFS(val);
-	si->num_fs_entries = min(si->num_fs_entries, ENETC_MAX_RFS_SIZE);
+	val = enetc_rd(hw, ENETC_SIPCAPR0);
+	if (val & ENETC_SIPCAPR0_RFS) {
+		val = enetc_rd(hw, ENETC_SIRFSCAPR);
+		si->num_fs_entries = ENETC_SIRFSCAPR_GET_NUM_RFS(val);
+		si->num_fs_entries = min(si->num_fs_entries, ENETC_MAX_RFS_SIZE);
+	} else {
+		/* ENETC which not supports RFS */
+		si->num_fs_entries = 0;
+	}
 
 	si->num_rss = 0;
 	val = enetc_rd(hw, ENETC_SIPCAPR0);
@@ -2066,7 +2074,10 @@ int enetc_configure_si(struct enetc_ndev_priv *priv)
 	/* enable SI */
 	enetc_wr(hw, ENETC_SIMR, ENETC_SIMR_EN);
 
-	if (si->num_rss) {
+	/* TODO: RSS support for i.MX95 will be supported later, and the
+	 * is_enetc_rev1() condition will be removed
+	 */
+	if (si->num_rss && is_enetc_rev1(si)) {
 		err = enetc_setup_default_rss_table(si, priv->num_rx_rings);
 		if (err)
 			return err;
@@ -2090,9 +2101,9 @@ void enetc_init_si_rings_params(struct enetc_ndev_priv *priv)
 	 */
 	priv->num_rx_rings = min_t(int, cpus, si->num_rx_rings);
 	priv->num_tx_rings = si->num_tx_rings;
-	priv->bdr_int_num = cpus;
+	priv->bdr_int_num = priv->num_rx_rings;
 	priv->ic_mode = ENETC_IC_RX_ADAPTIVE | ENETC_IC_TX_MANUAL;
-	priv->tx_ictt = ENETC_TXIC_TIMETHR;
+	priv->tx_ictt = enetc_usecs_to_cycles(600, priv->sysclk_freq);
 }
 EXPORT_SYMBOL_GPL(enetc_init_si_rings_params);
 
@@ -2501,10 +2512,14 @@ int enetc_open(struct net_device *ndev)
 
 	extended = !!(priv->active_offloads & ENETC_F_RX_TSTAMP);
 
-	err = enetc_setup_irqs(priv);
+	err = clk_prepare_enable(priv->ref_clk);
 	if (err)
 		return err;
 
+	err = enetc_setup_irqs(priv);
+	if (err)
+		goto err_setup_irqs;
+
 	err = enetc_phylink_connect(ndev);
 	if (err)
 		goto err_phy_connect;
@@ -2536,6 +2551,8 @@ err_alloc_tx:
 		phylink_disconnect_phy(priv->phylink);
 err_phy_connect:
 	enetc_free_irqs(priv);
+err_setup_irqs:
+	clk_disable_unprepare(priv->ref_clk);
 
 	return err;
 }
@@ -2589,6 +2606,7 @@ int enetc_close(struct net_device *ndev)
 	enetc_assign_tx_resources(priv, NULL);
 
 	enetc_free_irqs(priv);
+	clk_disable_unprepare(priv->ref_clk);
 
 	return 0;
 }
@@ -2995,13 +3013,99 @@ int enetc_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 }
 EXPORT_SYMBOL_GPL(enetc_ioctl);
 
+static int enetc_int_vector_init(struct enetc_ndev_priv *priv, int i,
+				 int v_tx_rings)
+{
+	struct enetc_int_vector *v;
+	struct enetc_bdr *bdr;
+	int j, err;
+
+	v = kzalloc(struct_size(v, tx_ring, v_tx_rings), GFP_KERNEL);
+	if (!v)
+		return -ENOMEM;
+
+	priv->int_vector[i] = v;
+	bdr = &v->rx_ring;
+	bdr->index = i;
+	bdr->ndev = priv->ndev;
+	bdr->dev = priv->dev;
+	bdr->bd_count = priv->rx_bd_count;
+	bdr->buffer_offset = ENETC_RXB_PAD;
+	priv->rx_ring[i] = bdr;
+
+	err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0);
+	if (err)
+		goto free_vector;
+
+	err = xdp_rxq_info_reg_mem_model(&bdr->xdp.rxq, MEM_TYPE_PAGE_SHARED,
+					 NULL);
+	if (err) {
+		xdp_rxq_info_unreg(&bdr->xdp.rxq);
+		goto free_vector;
+	}
+
+	/* init defaults for adaptive IC */
+	if (priv->ic_mode & ENETC_IC_RX_ADAPTIVE) {
+		v->rx_ictt = 0x1;
+		v->rx_dim_en = true;
+	}
+
+	INIT_WORK(&v->rx_dim.work, enetc_rx_dim_work);
+	netif_napi_add(priv->ndev, &v->napi, enetc_poll);
+	v->count_tx_rings = v_tx_rings;
+
+	for (j = 0; j < v_tx_rings; j++) {
+		int idx;
+
+		/* default tx ring mapping policy */
+		idx = priv->bdr_int_num * j + i;
+		__set_bit(idx, &v->tx_rings_map);
+		bdr = &v->tx_ring[j];
+		bdr->index = idx;
+		bdr->ndev = priv->ndev;
+		bdr->dev = priv->dev;
+		bdr->bd_count = priv->tx_bd_count;
+		priv->tx_ring[idx] = bdr;
+	}
+
+	return 0;
+
+free_vector:
+	priv->rx_ring[i] = NULL;
+	priv->int_vector[i] = NULL;
+	kfree(v);
+
+	return err;
+}
+
+static void enetc_int_vector_destroy(struct enetc_ndev_priv *priv, int i)
+{
+	struct enetc_int_vector *v = priv->int_vector[i];
+	struct enetc_bdr *rx_ring = &v->rx_ring;
+	int j, tx_ring_index;
+
+	xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq);
+	xdp_rxq_info_unreg(&rx_ring->xdp.rxq);
+	netif_napi_del(&v->napi);
+	cancel_work_sync(&v->rx_dim.work);
+
+	for (j = 0; j < v->count_tx_rings; j++) {
+		tx_ring_index = priv->bdr_int_num * j + i;
+		priv->tx_ring[tx_ring_index] = NULL;
+	}
+
+	priv->rx_ring[i] = NULL;
+	priv->int_vector[i] = NULL;
+	kfree(v);
+}
+
 int enetc_alloc_msix(struct enetc_ndev_priv *priv)
 {
 	struct pci_dev *pdev = priv->si->pdev;
+	int v_tx_rings, v_remainder;
 	int num_stack_tx_queues;
 	int first_xdp_tx_ring;
 	int i, n, err, nvec;
-	int v_tx_rings;
 
 	nvec = ENETC_BDR_INT_BASE_IDX + priv->bdr_int_num;
 	/* allocate MSIX for both messaging and Rx/Tx interrupts */
@@ -3015,64 +3119,17 @@ int enetc_alloc_msix(struct enetc_ndev_priv *priv)
 
 	/* # of tx rings per int vector */
 	v_tx_rings = priv->num_tx_rings / priv->bdr_int_num;
+	v_remainder = priv->num_tx_rings % priv->bdr_int_num;
 
 	for (i = 0; i < priv->bdr_int_num; i++) {
-		struct enetc_int_vector *v;
-		struct enetc_bdr *bdr;
-		int j;
-
-		v = kzalloc(struct_size(v, tx_ring, v_tx_rings), GFP_KERNEL);
-		if (!v) {
-			err = -ENOMEM;
-			goto fail;
-		}
-
-		priv->int_vector[i] = v;
-
-		bdr = &v->rx_ring;
-		bdr->index = i;
-		bdr->ndev = priv->ndev;
-		bdr->dev = priv->dev;
-		bdr->bd_count = priv->rx_bd_count;
-		bdr->buffer_offset = ENETC_RXB_PAD;
-		priv->rx_ring[i] = bdr;
-
-		err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0);
-		if (err) {
-			kfree(v);
-			goto fail;
-		}
+		/* Distribute the remaining TX rings to the first v_remainder
+		 * interrupt vectors
+		 */
+		int num_tx_rings = i < v_remainder ? v_tx_rings + 1 : v_tx_rings;
 
-		err = xdp_rxq_info_reg_mem_model(&bdr->xdp.rxq,
-						 MEM_TYPE_PAGE_SHARED, NULL);
-		if (err) {
-			xdp_rxq_info_unreg(&bdr->xdp.rxq);
-			kfree(v);
+		err = enetc_int_vector_init(priv, i, num_tx_rings);
+		if (err)
 			goto fail;
-		}
-
-		/* init defaults for adaptive IC */
-		if (priv->ic_mode & ENETC_IC_RX_ADAPTIVE) {
-			v->rx_ictt = 0x1;
-			v->rx_dim_en = true;
-		}
-		INIT_WORK(&v->rx_dim.work, enetc_rx_dim_work);
-		netif_napi_add(priv->ndev, &v->napi, enetc_poll);
-		v->count_tx_rings = v_tx_rings;
-
-		for (j = 0; j < v_tx_rings; j++) {
-			int idx;
-
-			/* default tx ring mapping policy */
-			idx = priv->bdr_int_num * j + i;
-			__set_bit(idx, &v->tx_rings_map);
-			bdr = &v->tx_ring[j];
-			bdr->index = idx;
-			bdr->ndev = priv->ndev;
-			bdr->dev = priv->dev;
-			bdr->bd_count = priv->tx_bd_count;
-			priv->tx_ring[idx] = bdr;
-		}
 	}
 
 	num_stack_tx_queues = enetc_num_stack_tx_queues(priv);
@@ -3092,16 +3149,8 @@ int enetc_alloc_msix(struct enetc_ndev_priv *priv)
 	return 0;
 
 fail:
-	while (i--) {
-		struct enetc_int_vector *v = priv->int_vector[i];
-		struct enetc_bdr *rx_ring = &v->rx_ring;
-
-		xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq);
-		xdp_rxq_info_unreg(&rx_ring->xdp.rxq);
-		netif_napi_del(&v->napi);
-		cancel_work_sync(&v->rx_dim.work);
-		kfree(v);
-	}
+	while (i--)
+		enetc_int_vector_destroy(priv, i);
 
 	pci_free_irq_vectors(pdev);
 
@@ -3113,26 +3162,8 @@ void enetc_free_msix(struct enetc_ndev_priv *priv)
 {
 	int i;
 
-	for (i = 0; i < priv->bdr_int_num; i++) {
-		struct enetc_int_vector *v = priv->int_vector[i];
-		struct enetc_bdr *rx_ring = &v->rx_ring;
-
-		xdp_rxq_info_unreg_mem_model(&rx_ring->xdp.rxq);
-		xdp_rxq_info_unreg(&rx_ring->xdp.rxq);
-		netif_napi_del(&v->napi);
-		cancel_work_sync(&v->rx_dim.work);
-	}
-
-	for (i = 0; i < priv->num_rx_rings; i++)
-		priv->rx_ring[i] = NULL;
-
-	for (i = 0; i < priv->num_tx_rings; i++)
-		priv->tx_ring[i] = NULL;
-
-	for (i = 0; i < priv->bdr_int_num; i++) {
-		kfree(priv->int_vector[i]);
-		priv->int_vector[i] = NULL;
-	}
+	for (i = 0; i < priv->bdr_int_num; i++)
+		enetc_int_vector_destroy(priv, i);
 
 	/* disable all MSIX for this device */
 	pci_free_irq_vectors(priv->si->pdev);
@@ -3241,5 +3272,55 @@ void enetc_pci_remove(struct pci_dev *pdev)
 }
 EXPORT_SYMBOL_GPL(enetc_pci_remove);
 
+static const struct enetc_drvdata enetc_pf_data = {
+	.sysclk_freq = ENETC_CLK_400M,
+	.pmac_offset = ENETC_PMAC_OFFSET,
+	.eth_ops = &enetc_pf_ethtool_ops,
+};
+
+static const struct enetc_drvdata enetc4_pf_data = {
+	.sysclk_freq = ENETC_CLK_333M,
+	.pmac_offset = ENETC4_PMAC_OFFSET,
+	.eth_ops = &enetc4_pf_ethtool_ops,
+};
+
+static const struct enetc_drvdata enetc_vf_data = {
+	.sysclk_freq = ENETC_CLK_400M,
+	.eth_ops = &enetc_vf_ethtool_ops,
+};
+
+static const struct enetc_platform_info enetc_info[] = {
+	{ .revision = ENETC_REV_1_0,
+	  .dev_id = ENETC_DEV_ID_PF,
+	  .data = &enetc_pf_data,
+	},
+	{ .revision = ENETC_REV_4_1,
+	  .dev_id = NXP_ENETC_PF_DEV_ID,
+	  .data = &enetc4_pf_data,
+	},
+	{ .revision = ENETC_REV_1_0,
+	  .dev_id = ENETC_DEV_ID_VF,
+	  .data = &enetc_vf_data,
+	},
+};
+
+int enetc_get_driver_data(struct enetc_si *si)
+{
+	u16 dev_id = si->pdev->device;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(enetc_info); i++) {
+		if (si->revision == enetc_info[i].revision &&
+		    dev_id == enetc_info[i].dev_id) {
+			si->drvdata = enetc_info[i].data;
+
+			return 0;
+		}
+	}
+
+	return -ERANGE;
+}
+EXPORT_SYMBOL_GPL(enetc_get_driver_data);
+
 MODULE_DESCRIPTION("NXP ENETC Ethernet driver");
 MODULE_LICENSE("Dual BSD/GPL");