84 lines
2.4 KiB
Diff
84 lines
2.4 KiB
Diff
From f26f228f312fafc090d21036b682bd1062bb731f Mon Sep 17 00:00:00 2001
|
|
From: John Crispin <blogic@openwrt.org>
|
|
Date: Sat, 23 Apr 2016 11:57:21 +0200
|
|
Subject: [PATCH 79/91] net-next: mediatek: fix BQL support
|
|
|
|
Signed-off-by: John Crispin <blogic@openwrt.org>
|
|
---
|
|
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 33 ++++++++++++++++-----------
|
|
1 file changed, 20 insertions(+), 13 deletions(-)
|
|
|
|
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
|
|
@@ -625,7 +625,16 @@ static int mtk_tx_map(struct sk_buff *sk
|
|
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);
|
|
@@ -853,21 +862,18 @@ static int mtk_poll_tx(struct mtk_eth *e
|
|
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;
|
|
|
|
@@ -887,9 +893,8 @@ static int mtk_poll_tx(struct mtk_eth *e
|
|
}
|
|
|
|
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);
|
|
|
|
@@ -902,11 +907,13 @@ static int mtk_poll_tx(struct mtk_eth *e
|
|
|
|
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 */
|