mediatek: update patches

* fixes NAND
* adds latest ethernet patches

Signed-off-by: John Crispin <john@phrozen.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/target/linux/mediatek/patches-4.4/0081-net-next-mediatek-fix-DQL-support.patch b/target/linux/mediatek/patches-4.4/0081-net-next-mediatek-fix-DQL-support.patch
new file mode 100644
index 0000000000..4d6a689603
--- /dev/null
+++ b/target/linux/mediatek/patches-4.4/0081-net-next-mediatek-fix-DQL-support.patch
@@ -0,0 +1,97 @@
+From 81cdbda2a08375b9d5915567d2210bf2433e7332 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Sat, 23 Apr 2016 11:57:21 +0200
+Subject: [PATCH 081/102] net-next: mediatek: fix DQL support
+
+The MTK ethernet core has 2 MACs both sitting on the same DMA ring. The
+current code will assign the TX traffic of each MAC to its own DQL. This
+results in the amount of data, that DQL says is in the queue incorrect. As
+the data from multiple devices is infact enqueued. This makes any decision
+based on these value non deterministic. Fix this by tracking all TX
+traffic, regardless of the MAC it belongs to in the DQL of all devices
+using the DMA.
+
+Signed-off-by: John Crispin <john@phrozen.org>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c |   33 ++++++++++++++++-----------
+ 1 file changed, 20 insertions(+), 13 deletions(-)
+
+diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+index 76ecb1b..feedd5a 100644
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -656,7 +656,16 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
+ 	WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) |
+ 				(!nr_frags * TX_DMA_LS0)));
+ 
+-	netdev_sent_queue(dev, skb->len);
++	/* we have a single DMA ring so BQL needs to be updated for all devices
++	 * sitting on this ring
++	 */
++	for (i = 0; i < MTK_MAC_COUNT; i++) {
++		if (!eth->netdev[i])
++			continue;
++
++		netdev_sent_queue(eth->netdev[i], skb->len);
++	}
++
+ 	skb_tx_timestamp(skb);
+ 
+ 	ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2);
+@@ -884,21 +893,18 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
+ 	struct mtk_tx_dma *desc;
+ 	struct sk_buff *skb;
+ 	struct mtk_tx_buf *tx_buf;
+-	int total = 0, done[MTK_MAX_DEVS];
+-	unsigned int bytes[MTK_MAX_DEVS];
++	int total = 0, done = 0;
++	unsigned int bytes = 0;
+ 	u32 cpu, dma;
+ 	static int condition;
+ 	int i;
+ 
+-	memset(done, 0, sizeof(done));
+-	memset(bytes, 0, sizeof(bytes));
+-
+ 	cpu = mtk_r32(eth, MTK_QTX_CRX_PTR);
+ 	dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
+ 
+ 	desc = mtk_qdma_phys_to_virt(ring, cpu);
+ 
+-	while ((cpu != dma) && budget) {
++	while ((cpu != dma) && done < budget) {
+ 		u32 next_cpu = desc->txd2;
+ 		int mac;
+ 
+@@ -918,9 +924,8 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
+ 		}
+ 
+ 		if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) {
+-			bytes[mac] += skb->len;
+-			done[mac]++;
+-			budget--;
++			bytes += skb->len;
++			done++;
+ 		}
+ 		mtk_tx_unmap(eth->dev, tx_buf);
+ 
+@@ -933,11 +938,13 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
+ 
+ 	mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
+ 
++	/* we have a single DMA ring so BQL needs to be updated for all devices
++	 * sitting on this ring
++	 */
+ 	for (i = 0; i < MTK_MAC_COUNT; i++) {
+-		if (!eth->netdev[i] || !done[i])
++		if (!eth->netdev[i])
+ 			continue;
+-		netdev_completed_queue(eth->netdev[i], done[i], bytes[i]);
+-		total += done[i];
++		netdev_completed_queue(eth->netdev[i], done, bytes);
+ 	}
+ 
+ 	/* read hw index again make sure no new tx packet */
+-- 
+1.7.10.4
+