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From: Gavin Shan <gwshan@linux.vnet.ibm.com>
To: netdev@vger.kernel.org
Cc: davem@davemloft.net, benh@kernel.crashing.org, joel@jms.id.au,
	weixue@trustnetic.com, Gavin Shan <gwshan@linux.vnet.ibm.com>
Subject: [PATCH net-next 10/10] net/farady: Mask PHY interrupt with NCSI mode
Date: Sun,  3 Jul 2016 15:32:33 +1000	[thread overview]
Message-ID: <1467523953-18998-11-git-send-email-gwshan@linux.vnet.ibm.com> (raw)
In-Reply-To: <1467523953-18998-1-git-send-email-gwshan@linux.vnet.ibm.com>

Bogus PHY interrupts are observed. This masks the PHY interrupt
when the interface works in NCSI mode as there is no attached
PHY under the circumstance.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Joel Stanley <joel@jms.id.au>
---
 drivers/net/ethernet/faraday/ftgmac100.c | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index d8afa2d..2d4c7ea 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -74,6 +74,7 @@ struct ftgmac100 {
 
 	struct mii_bus *mii_bus;
 	int old_speed;
+	int int_mask_all;
 	bool use_ncsi;
 	bool enabled;
 };
@@ -84,14 +85,6 @@ static int ftgmac100_alloc_rx_page(struct ftgmac100 *priv,
 /******************************************************************************
  * internal functions (hardware register access)
  *****************************************************************************/
-#define INT_MASK_ALL_ENABLED	(FTGMAC100_INT_RPKT_LOST	| \
-				 FTGMAC100_INT_XPKT_ETH		| \
-				 FTGMAC100_INT_XPKT_LOST	| \
-				 FTGMAC100_INT_AHB_ERR		| \
-				 FTGMAC100_INT_PHYSTS_CHG	| \
-				 FTGMAC100_INT_RPKT_BUF		| \
-				 FTGMAC100_INT_NO_RXBUF)
-
 static void ftgmac100_set_rx_ring_base(struct ftgmac100 *priv, dma_addr_t addr)
 {
 	iowrite32(addr, priv->base + FTGMAC100_OFFSET_RXR_BADR);
@@ -1070,8 +1063,9 @@ static int ftgmac100_poll(struct napi_struct *napi, int budget)
 		ftgmac100_tx_complete(priv);
 	}
 
-	if (status & (FTGMAC100_INT_NO_RXBUF | FTGMAC100_INT_RPKT_LOST |
-		      FTGMAC100_INT_AHB_ERR | FTGMAC100_INT_PHYSTS_CHG)) {
+	if (status & priv->int_mask_all & (FTGMAC100_INT_NO_RXBUF |
+			FTGMAC100_INT_RPKT_LOST | FTGMAC100_INT_AHB_ERR |
+			FTGMAC100_INT_PHYSTS_CHG)) {
 		if (net_ratelimit())
 			netdev_info(netdev, "[ISR] = 0x%x: %s%s%s%s\n", status,
 				    status & FTGMAC100_INT_NO_RXBUF ? "NO_RXBUF " : "",
@@ -1094,7 +1088,8 @@ static int ftgmac100_poll(struct napi_struct *napi, int budget)
 		napi_complete(napi);
 
 		/* enable all interrupts */
-		iowrite32(INT_MASK_ALL_ENABLED, priv->base + FTGMAC100_OFFSET_IER);
+		iowrite32(priv->int_mask_all,
+			  priv->base + FTGMAC100_OFFSET_IER);
 	}
 
 	return rx;
@@ -1140,7 +1135,7 @@ static int ftgmac100_open(struct net_device *netdev)
 	netif_start_queue(netdev);
 
 	/* enable all interrupts */
-	iowrite32(INT_MASK_ALL_ENABLED, priv->base + FTGMAC100_OFFSET_IER);
+	iowrite32(priv->int_mask_all, priv->base + FTGMAC100_OFFSET_IER);
 
 	/* Start the NCSI device */
 	if (priv->use_ncsi) {
@@ -1365,6 +1360,13 @@ static int ftgmac100_probe(struct platform_device *pdev)
 	/* MAC address from chip or random one */
 	ftgmac100_setup_mac(priv);
 
+	priv->int_mask_all = (FTGMAC100_INT_RPKT_LOST |
+			      FTGMAC100_INT_XPKT_ETH |
+			      FTGMAC100_INT_XPKT_LOST |
+			      FTGMAC100_INT_AHB_ERR |
+			      FTGMAC100_INT_PHYSTS_CHG |
+			      FTGMAC100_INT_RPKT_BUF |
+			      FTGMAC100_INT_NO_RXBUF);
 	if (pdev->dev.of_node &&
 	    of_get_property(pdev->dev.of_node, "use-ncsi", NULL)) {
 		if (!IS_ENABLED(CONFIG_NET_NCSI)) {
@@ -1374,6 +1376,7 @@ static int ftgmac100_probe(struct platform_device *pdev)
 
 		dev_info(&pdev->dev, "Using NCSI interface\n");
 		priv->use_ncsi = true;
+		priv->int_mask_all &= ~FTGMAC100_INT_PHYSTS_CHG;
 		priv->ndev = ncsi_register_dev(netdev, ftgmac100_ncsi_handler);
 		if (!priv->ndev)
 			goto err_ncsi_dev;
-- 
2.1.0

  parent reply	other threads:[~2016-07-03  5:32 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-03  5:32 [PATCH net-next 00/10] NCSI Support Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 01/10] net/ncsi: Resource management Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 02/10] net/ncsi: NCSI command packet handler Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 03/10] net/ncsi: NCSI response " Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 04/10] net/ncsi: Package and channel management Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 05/10] net/ncsi: NCSI AEN packet handler Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 06/10] net/farady: Helper functions to create or destroy MDIO interface Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 07/10] net/farady: Read MAC address from chip Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 08/10] net/farady: Support NCSI mode Gavin Shan
2016-07-03  5:32 ` [PATCH net-next 09/10] net/farady: Match driver according to compatible property Gavin Shan
2016-07-03  5:32 ` Gavin Shan [this message]
2016-07-03 22:03 ` [PATCH net-next 00/10] NCSI Support Or Gerlitz
2016-07-03 22:49   ` Benjamin Herrenschmidt
2016-07-04  0:24     ` Gavin Shan
2016-07-05 17:44   ` Alexei Starovoitov
2016-07-05 21:42     ` Benjamin Herrenschmidt
2016-07-06  2:07       ` Alexei Starovoitov
2016-07-06  2:14         ` Benjamin Herrenschmidt
2016-07-07  9:12     ` Or Gerlitz
2016-07-07  9:17       ` Benjamin Herrenschmidt
2016-07-07  9:18         ` Benjamin Herrenschmidt
2016-07-07 13:05         ` Gavin Shan
2016-07-07 13:44         ` Or Gerlitz
2016-07-07 16:34           ` Gavin Shan
2016-07-07 17:32 ` Florian Fainelli
2016-07-07 22:05   ` Benjamin Herrenschmidt
2016-07-08  1:10   ` Gavin Shan

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