1 files changed, 236 insertions, 53 deletions

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 4277d0c12..867caf6e7 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -42,6 +42,16 @@
 		 NETIF_MSG_RX_ERR | \
 		 NETIF_MSG_TX_ERR)
 
+static const char *ravb_rx_irqs[NUM_RX_QUEUE] = {
+	"ch0", /* RAVB_BE */
+	"ch1", /* RAVB_NC */
+};
+
+static const char *ravb_tx_irqs[NUM_TX_QUEUE] = {
+	"ch18", /* RAVB_BE */
+	"ch19", /* RAVB_NC */
+};
+
 void ravb_modify(struct net_device *ndev, enum ravb_reg reg, u32 clear,
 		 u32 set)
 {
@@ -236,10 +246,9 @@ static void ravb_ring_format(struct net_device *ndev, int q)
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
 		/* RX descriptor */
 		rx_desc = &priv->rx_ring[q][i];
-		/* The size of the buffer should be on 16-byte boundary. */
-		rx_desc->ds_cc = cpu_to_le16(ALIGN(PKT_BUF_SZ, 16));
+		rx_desc->ds_cc = cpu_to_le16(PKT_BUF_SZ);
 		dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
-					  ALIGN(PKT_BUF_SZ, 16),
+					  PKT_BUF_SZ,
 					  DMA_FROM_DEVICE);
 		/* We just set the data size to 0 for a failed mapping which
 		 * should prevent DMA from happening...
@@ -365,6 +374,7 @@ static void ravb_emac_init(struct net_device *ndev)
 /* Device init function for Ethernet AVB */
 static int ravb_dmac_init(struct net_device *ndev)
 {
+	struct ravb_private *priv = netdev_priv(ndev);
 	int error;
 
 	/* Set CONFIG mode */
@@ -401,6 +411,12 @@ static int ravb_dmac_init(struct net_device *ndev)
 	ravb_write(ndev, TCCR_TFEN, TCCR);
 
 	/* Interrupt init: */
+	if (priv->chip_id == RCAR_GEN3) {
+		/* Clear DIL.DPLx */
+		ravb_write(ndev, 0, DIL);
+		/* Set queue specific interrupt */
+		ravb_write(ndev, CIE_CRIE | CIE_CTIE | CIE_CL0M, CIE);
+	}
 	/* Frame receive */
 	ravb_write(ndev, RIC0_FRE0 | RIC0_FRE1, RIC0);
 	/* Disable FIFO full warning */
@@ -541,7 +557,7 @@ static bool ravb_rx(struct net_device *ndev, int *quota, int q)
 			skb = priv->rx_skb[q][entry];
 			priv->rx_skb[q][entry] = NULL;
 			dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
-					 ALIGN(PKT_BUF_SZ, 16),
+					 PKT_BUF_SZ,
 					 DMA_FROM_DEVICE);
 			get_ts &= (q == RAVB_NC) ?
 					RAVB_RXTSTAMP_TYPE_V2_L2_EVENT :
@@ -571,8 +587,7 @@ static bool ravb_rx(struct net_device *ndev, int *quota, int q)
 	for (; priv->cur_rx[q] - priv->dirty_rx[q] > 0; priv->dirty_rx[q]++) {
 		entry = priv->dirty_rx[q] % priv->num_rx_ring[q];
 		desc = &priv->rx_ring[q][entry];
-		/* The size of the buffer should be on 16-byte boundary. */
-		desc->ds_cc = cpu_to_le16(ALIGN(PKT_BUF_SZ, 16));
+		desc->ds_cc = cpu_to_le16(PKT_BUF_SZ);
 
 		if (!priv->rx_skb[q][entry]) {
 			skb = netdev_alloc_skb(ndev,
@@ -643,7 +658,7 @@ static int ravb_stop_dma(struct net_device *ndev)
 }
 
 /* E-MAC interrupt handler */
-static void ravb_emac_interrupt(struct net_device *ndev)
+static void ravb_emac_interrupt_unlocked(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	u32 ecsr, psr;
@@ -669,6 +684,18 @@ static void ravb_emac_interrupt(struct net_device *ndev)
 	}
 }
 
+static irqreturn_t ravb_emac_interrupt(int irq, void *dev_id)
+{
+	struct net_device *ndev = dev_id;
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	spin_lock(&priv->lock);
+	ravb_emac_interrupt_unlocked(ndev);
+	mmiowb();
+	spin_unlock(&priv->lock);
+	return IRQ_HANDLED;
+}
+
 /* Error interrupt handler */
 static void ravb_error_interrupt(struct net_device *ndev)
 {
@@ -695,6 +722,50 @@ static void ravb_error_interrupt(struct net_device *ndev)
 	}
 }
 
+static bool ravb_queue_interrupt(struct net_device *ndev, int q)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	u32 ris0 = ravb_read(ndev, RIS0);
+	u32 ric0 = ravb_read(ndev, RIC0);
+	u32 tis  = ravb_read(ndev, TIS);
+	u32 tic  = ravb_read(ndev, TIC);
+
+	if (((ris0 & ric0) & BIT(q)) || ((tis  & tic)  & BIT(q))) {
+		if (napi_schedule_prep(&priv->napi[q])) {
+			/* Mask RX and TX interrupts */
+			if (priv->chip_id == RCAR_GEN2) {
+				ravb_write(ndev, ric0 & ~BIT(q), RIC0);
+				ravb_write(ndev, tic & ~BIT(q), TIC);
+			} else {
+				ravb_write(ndev, BIT(q), RID0);
+				ravb_write(ndev, BIT(q), TID);
+			}
+			__napi_schedule(&priv->napi[q]);
+		} else {
+			netdev_warn(ndev,
+				    "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n",
+				    ris0, ric0);
+			netdev_warn(ndev,
+				    "                    tx status 0x%08x, tx mask 0x%08x.\n",
+				    tis, tic);
+		}
+		return true;
+	}
+	return false;
+}
+
+static bool ravb_timestamp_interrupt(struct net_device *ndev)
+{
+	u32 tis = ravb_read(ndev, TIS);
+
+	if (tis & TIS_TFUF) {
+		ravb_write(ndev, ~TIS_TFUF, TIS);
+		ravb_get_tx_tstamp(ndev);
+		return true;
+	}
+	return false;
+}
+
 static irqreturn_t ravb_interrupt(int irq, void *dev_id)
 {
 	struct net_device *ndev = dev_id;
@@ -708,63 +779,102 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
 
 	/* Received and transmitted interrupts */
 	if (iss & (ISS_FRS | ISS_FTS | ISS_TFUS)) {
-		u32 ris0 = ravb_read(ndev, RIS0);
-		u32 ric0 = ravb_read(ndev, RIC0);
-		u32 tis  = ravb_read(ndev, TIS);
-		u32 tic  = ravb_read(ndev, TIC);
 		int q;
 
 		/* Timestamp updated */
-		if (tis & TIS_TFUF) {
-			ravb_write(ndev, ~TIS_TFUF, TIS);
-			ravb_get_tx_tstamp(ndev);
+		if (ravb_timestamp_interrupt(ndev))
 			result = IRQ_HANDLED;
-		}
 
 		/* Network control and best effort queue RX/TX */
 		for (q = RAVB_NC; q >= RAVB_BE; q--) {
-			if (((ris0 & ric0) & BIT(q)) ||
-			    ((tis  & tic)  & BIT(q))) {
-				if (napi_schedule_prep(&priv->napi[q])) {
-					/* Mask RX and TX interrupts */
-					ric0 &= ~BIT(q);
-					tic &= ~BIT(q);
-					ravb_write(ndev, ric0, RIC0);
-					ravb_write(ndev, tic, TIC);
-					__napi_schedule(&priv->napi[q]);
-				} else {
-					netdev_warn(ndev,
-						    "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n",
-						    ris0, ric0);
-					netdev_warn(ndev,
-						    "                    tx status 0x%08x, tx mask 0x%08x.\n",
-						    tis, tic);
-				}
+			if (ravb_queue_interrupt(ndev, q))
 				result = IRQ_HANDLED;
-			}
 		}
 	}
 
 	/* E-MAC status summary */
 	if (iss & ISS_MS) {
-		ravb_emac_interrupt(ndev);
+		ravb_emac_interrupt_unlocked(ndev);
+		result = IRQ_HANDLED;
+	}
+
+	/* Error status summary */
+	if (iss & ISS_ES) {
+		ravb_error_interrupt(ndev);
+		result = IRQ_HANDLED;
+	}
+
+	/* gPTP interrupt status summary */
+	if (iss & ISS_CGIS) {
+		ravb_ptp_interrupt(ndev);
 		result = IRQ_HANDLED;
 	}
 
+	mmiowb();
+	spin_unlock(&priv->lock);
+	return result;
+}
+
+/* Timestamp/Error/gPTP interrupt handler */
+static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id)
+{
+	struct net_device *ndev = dev_id;
+	struct ravb_private *priv = netdev_priv(ndev);
+	irqreturn_t result = IRQ_NONE;
+	u32 iss;
+
+	spin_lock(&priv->lock);
+	/* Get interrupt status */
+	iss = ravb_read(ndev, ISS);
+
+	/* Timestamp updated */
+	if ((iss & ISS_TFUS) && ravb_timestamp_interrupt(ndev))
+		result = IRQ_HANDLED;
+
 	/* Error status summary */
 	if (iss & ISS_ES) {
 		ravb_error_interrupt(ndev);
 		result = IRQ_HANDLED;
 	}
 
-	if ((iss & ISS_CGIS) && ravb_ptp_interrupt(ndev) == IRQ_HANDLED)
+	/* gPTP interrupt status summary */
+	if (iss & ISS_CGIS) {
+		ravb_ptp_interrupt(ndev);
 		result = IRQ_HANDLED;
+	}
 
 	mmiowb();
 	spin_unlock(&priv->lock);
 	return result;
 }
 
+static irqreturn_t ravb_dma_interrupt(int irq, void *dev_id, int q)
+{
+	struct net_device *ndev = dev_id;
+	struct ravb_private *priv = netdev_priv(ndev);
+	irqreturn_t result = IRQ_NONE;
+
+	spin_lock(&priv->lock);
+
+	/* Network control/Best effort queue RX/TX */
+	if (ravb_queue_interrupt(ndev, q))
+		result = IRQ_HANDLED;
+
+	mmiowb();
+	spin_unlock(&priv->lock);
+	return result;
+}
+
+static irqreturn_t ravb_be_interrupt(int irq, void *dev_id)
+{
+	return ravb_dma_interrupt(irq, dev_id, RAVB_BE);
+}
+
+static irqreturn_t ravb_nc_interrupt(int irq, void *dev_id)
+{
+	return ravb_dma_interrupt(irq, dev_id, RAVB_NC);
+}
+
 static int ravb_poll(struct napi_struct *napi, int budget)
 {
 	struct net_device *ndev = napi->dev;
@@ -804,8 +914,13 @@ static int ravb_poll(struct napi_struct *napi, int budget)
 
 	/* Re-enable RX/TX interrupts */
 	spin_lock_irqsave(&priv->lock, flags);
-	ravb_modify(ndev, RIC0, mask, mask);
-	ravb_modify(ndev, TIC,  mask, mask);
+	if (priv->chip_id == RCAR_GEN2) {
+		ravb_modify(ndev, RIC0, mask, mask);
+		ravb_modify(ndev, TIC,  mask, mask);
+	} else {
+		ravb_write(ndev, mask, RIE0);
+		ravb_write(ndev, mask, TIE);
+	}
 	mmiowb();
 	spin_unlock_irqrestore(&priv->lock, flags);
 
@@ -1208,35 +1323,72 @@ static const struct ethtool_ops ravb_ethtool_ops = {
 	.get_ts_info		= ravb_get_ts_info,
 };
 
+static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler,
+				struct net_device *ndev, struct device *dev,
+				const char *ch)
+{
+	char *name;
+	int error;
+
+	name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", ndev->name, ch);
+	if (!name)
+		return -ENOMEM;
+	error = request_irq(irq, handler, 0, name, ndev);
+	if (error)
+		netdev_err(ndev, "cannot request IRQ %s\n", name);
+
+	return error;
+}
+
 /* Network device open function for Ethernet AVB */
 static int ravb_open(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
+	struct platform_device *pdev = priv->pdev;
+	struct device *dev = &pdev->dev;
 	int error;
 
 	napi_enable(&priv->napi[RAVB_BE]);
 	napi_enable(&priv->napi[RAVB_NC]);
 
-	error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED, ndev->name,
-			    ndev);
-	if (error) {
-		netdev_err(ndev, "cannot request IRQ\n");
-		goto out_napi_off;
-	}
-
-	if (priv->chip_id == RCAR_GEN3) {
-		error = request_irq(priv->emac_irq, ravb_interrupt,
-				    IRQF_SHARED, ndev->name, ndev);
+	if (priv->chip_id == RCAR_GEN2) {
+		error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED,
+				    ndev->name, ndev);
 		if (error) {
 			netdev_err(ndev, "cannot request IRQ\n");
-			goto out_free_irq;
+			goto out_napi_off;
 		}
+	} else {
+		error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev,
+				      dev, "ch22:multi");
+		if (error)
+			goto out_napi_off;
+		error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev,
+				      dev, "ch24:emac");
+		if (error)
+			goto out_free_irq;
+		error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt,
+				      ndev, dev, "ch0:rx_be");
+		if (error)
+			goto out_free_irq_emac;
+		error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt,
+				      ndev, dev, "ch18:tx_be");
+		if (error)
+			goto out_free_irq_be_rx;
+		error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt,
+				      ndev, dev, "ch1:rx_nc");
+		if (error)
+			goto out_free_irq_be_tx;
+		error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt,
+				      ndev, dev, "ch19:tx_nc");
+		if (error)
+			goto out_free_irq_nc_rx;
 	}
 
 	/* Device init */
 	error = ravb_dmac_init(ndev);
 	if (error)
-		goto out_free_irq2;
+		goto out_free_irq_nc_tx;
 	ravb_emac_init(ndev);
 
 	/* Initialise PTP Clock driver */
@@ -1256,9 +1408,18 @@ out_ptp_stop:
 	/* Stop PTP Clock driver */
 	if (priv->chip_id == RCAR_GEN2)
 		ravb_ptp_stop(ndev);
-out_free_irq2:
-	if (priv->chip_id == RCAR_GEN3)
-		free_irq(priv->emac_irq, ndev);
+out_free_irq_nc_tx:
+	if (priv->chip_id == RCAR_GEN2)
+		goto out_free_irq;
+	free_irq(priv->tx_irqs[RAVB_NC], ndev);
+out_free_irq_nc_rx:
+	free_irq(priv->rx_irqs[RAVB_NC], ndev);
+out_free_irq_be_tx:
+	free_irq(priv->tx_irqs[RAVB_BE], ndev);
+out_free_irq_be_rx:
+	free_irq(priv->rx_irqs[RAVB_BE], ndev);
+out_free_irq_emac:
+	free_irq(priv->emac_irq, ndev);
 out_free_irq:
 	free_irq(ndev->irq, ndev);
 out_napi_off:
@@ -1506,8 +1667,13 @@ static int ravb_close(struct net_device *ndev)
 		priv->phydev = NULL;
 	}
 
-	if (priv->chip_id == RCAR_GEN3)
+	if (priv->chip_id != RCAR_GEN2) {
+		free_irq(priv->tx_irqs[RAVB_NC], ndev);
+		free_irq(priv->rx_irqs[RAVB_NC], ndev);
+		free_irq(priv->tx_irqs[RAVB_BE], ndev);
+		free_irq(priv->rx_irqs[RAVB_BE], ndev);
 		free_irq(priv->emac_irq, ndev);
+	}
 	free_irq(ndev->irq, ndev);
 
 	napi_disable(&priv->napi[RAVB_NC]);
@@ -1718,6 +1884,7 @@ static int ravb_probe(struct platform_device *pdev)
 	struct net_device *ndev;
 	int error, irq, q;
 	struct resource *res;
+	int i;
 
 	if (!np) {
 		dev_err(&pdev->dev,
@@ -1787,6 +1954,22 @@ static int ravb_probe(struct platform_device *pdev)
 			goto out_release;
 		}
 		priv->emac_irq = irq;
+		for (i = 0; i < NUM_RX_QUEUE; i++) {
+			irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]);
+			if (irq < 0) {
+				error = irq;
+				goto out_release;
+			}
+			priv->rx_irqs[i] = irq;
+		}
+		for (i = 0; i < NUM_TX_QUEUE; i++) {
+			irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]);
+			if (irq < 0) {
+				error = irq;
+				goto out_release;
+			}
+			priv->tx_irqs[i] = irq;
+		}
 	}
 
 	priv->chip_id = chip_id;