[openwrt/openwrt] generic: 6.6: mtk_eth_soc: reset all TX queues on DMA free
LEDE Commits
lede-commits at lists.infradead.org
Fri Sep 20 08:37:24 PDT 2024
dangole pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/0787d95f06d962ef32ca1dd096b4d121155e25ae
commit 0787d95f06d962ef32ca1dd096b4d121155e25ae
Author: Daniel Golle <daniel at makrotopia.org>
AuthorDate: Wed Sep 18 02:12:24 2024 +0100
generic: 6.6: mtk_eth_soc: reset all TX queues on DMA free
The purpose of resetting the TX queue is to reset the
byte and packet count as well as to clear the software
flow control XOFF bit.
MediaTek developers pointed out that netdev_reset_queue would only
resets queue 0 of the network device.
Queues that are not reset may cause unexpected issues.
Packets may stop being sent after reset and "transmit timeout" log may
be displayed.
Import fix from MediaTek's SDK to resolve this issue.
Link: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/5746a94456f466446cc0dcdfbd9078df6df31b63
Signed-off-by: Daniel Golle <daniel at makrotopia.org>
---
...t-mtk_eth_soc-reset-all-TX-queues-on-DMA-.patch | 49 ++++++++++++++++++++++
...t-mtk_eth_soc-add-paths-and-SerDes-modes-.patch | 18 ++++----
2 files changed, 58 insertions(+), 9 deletions(-)
diff --git a/target/linux/generic/pending-6.6/730-net-ethernet-mtk_eth_soc-reset-all-TX-queues-on-DMA-.patch b/target/linux/generic/pending-6.6/730-net-ethernet-mtk_eth_soc-reset-all-TX-queues-on-DMA-.patch
new file mode 100644
index 0000000000..67d0ab4537
--- /dev/null
+++ b/target/linux/generic/pending-6.6/730-net-ethernet-mtk_eth_soc-reset-all-TX-queues-on-DMA-.patch
@@ -0,0 +1,49 @@
+From 7d41a5a8e9c91cc6bb011dd953570738583dd091 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel at makrotopia.org>
+Date: Wed, 18 Sep 2024 02:01:01 +0100
+Subject: [PATCH] net: ethernet: mtk_eth_soc: reset all TX queues on DMA free
+
+The purpose of resetting the TX queue is to reset the
+byte and packet count as well as to clear the software
+flow control XOFF bit.
+
+MediaTek developers pointed out that netdev_reset_queue would only
+resets queue 0 of the network device.
+Queues that are not reset may cause unexpected issues.
+
+Packets may stop being sent after reset and "transmit timeout" log may
+be displayed.
+
+Import fix from MediaTek's SDK to resolve this issue.
+
+Signed-off-by: Daniel Golle <daniel at makrotopia.org>
+---
+ drivers/net/ethernet/mediatek/mtk_eth_soc.c | 18 ++++++++++++++----
+ 1 file changed, 14 insertions(+), 4 deletions(-)
+
+--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+@@ -3135,11 +3135,19 @@ static int mtk_dma_init(struct mtk_eth *
+ static void mtk_dma_free(struct mtk_eth *eth)
+ {
+ const struct mtk_soc_data *soc = eth->soc;
+- int i;
++ int i, j, txqs = 1;
++
++ if (MTK_HAS_CAPS(eth->soc->caps, MTK_QDMA))
++ txqs = MTK_QDMA_NUM_QUEUES;
++
++ for (i = 0; i < MTK_MAX_DEVS; i++) {
++ if (!eth->netdev[i])
++ continue;
++
++ for (j = 0; j < txqs; j++)
++ netdev_tx_reset_queue(netdev_get_tx_queue(eth->netdev[i], j));
++ }
+
+- for (i = 0; i < MTK_MAX_DEVS; i++)
+- if (eth->netdev[i])
+- netdev_reset_queue(eth->netdev[i]);
+ if (!MTK_HAS_CAPS(soc->caps, MTK_SRAM) && eth->scratch_ring) {
+ dma_free_coherent(eth->dma_dev,
+ MTK_QDMA_RING_SIZE * soc->tx.desc_size,
diff --git a/target/linux/generic/pending-6.6/737-net-ethernet-mtk_eth_soc-add-paths-and-SerDes-modes-.patch b/target/linux/generic/pending-6.6/737-net-ethernet-mtk_eth_soc-add-paths-and-SerDes-modes-.patch
index f9e10e5733..3e3b7f6074 100644
--- a/target/linux/generic/pending-6.6/737-net-ethernet-mtk_eth_soc-add-paths-and-SerDes-modes-.patch
+++ b/target/linux/generic/pending-6.6/737-net-ethernet-mtk_eth_soc-add-paths-and-SerDes-modes-.patch
@@ -490,7 +490,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
.mac_finish = mtk_mac_finish,
.mac_link_down = mtk_mac_link_down,
.mac_link_up = mtk_mac_link_up,
-@@ -3407,6 +3548,9 @@ static int mtk_open(struct net_device *d
+@@ -3415,6 +3556,9 @@ static int mtk_open(struct net_device *d
ppe_num = eth->soc->ppe_num;
@@ -500,7 +500,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
err = phylink_of_phy_connect(mac->phylink, mac->of_node, 0);
if (err) {
netdev_err(dev, "%s: could not attach PHY: %d\n", __func__,
-@@ -3557,6 +3701,9 @@ static int mtk_stop(struct net_device *d
+@@ -3565,6 +3709,9 @@ static int mtk_stop(struct net_device *d
for (i = 0; i < ARRAY_SIZE(eth->ppe); i++)
mtk_ppe_stop(eth->ppe[i]);
@@ -510,7 +510,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
return 0;
}
-@@ -4570,6 +4717,7 @@ static const struct net_device_ops mtk_n
+@@ -4578,6 +4725,7 @@ static const struct net_device_ops mtk_n
static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
{
const __be32 *_id = of_get_property(np, "reg", NULL);
@@ -518,7 +518,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
phy_interface_t phy_mode;
struct phylink *phylink;
struct mtk_mac *mac;
-@@ -4606,16 +4754,41 @@ static int mtk_add_mac(struct mtk_eth *e
+@@ -4614,16 +4762,41 @@ static int mtk_add_mac(struct mtk_eth *e
mac->id = id;
mac->hw = eth;
mac->of_node = np;
@@ -568,7 +568,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
}
memset(mac->hwlro_ip, 0, sizeof(mac->hwlro_ip));
-@@ -4698,8 +4871,21 @@ static int mtk_add_mac(struct mtk_eth *e
+@@ -4706,8 +4879,21 @@ static int mtk_add_mac(struct mtk_eth *e
phy_interface_zero(mac->phylink_config.supported_interfaces);
__set_bit(PHY_INTERFACE_MODE_INTERNAL,
mac->phylink_config.supported_interfaces);
@@ -590,7 +590,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
phylink = phylink_create(&mac->phylink_config,
of_fwnode_handle(mac->of_node),
phy_mode, &mtk_phylink_ops);
-@@ -4750,6 +4936,26 @@ free_netdev:
+@@ -4758,6 +4944,26 @@ free_netdev:
return err;
}
@@ -617,7 +617,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev)
{
struct net_device *dev, *tmp;
-@@ -4896,7 +5102,8 @@ static int mtk_probe(struct platform_dev
+@@ -4904,7 +5110,8 @@ static int mtk_probe(struct platform_dev
regmap_write(cci, 0, 3);
}
@@ -627,7 +627,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
err = mtk_sgmii_init(eth);
if (err)
-@@ -5007,6 +5214,24 @@ static int mtk_probe(struct platform_dev
+@@ -5015,6 +5222,24 @@ static int mtk_probe(struct platform_dev
}
}
@@ -652,7 +652,7 @@ Signed-off-by: Daniel Golle <daniel at makrotopia.org>
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_INT)) {
err = devm_request_irq(eth->dev, eth->irq[0],
mtk_handle_irq, 0,
-@@ -5110,6 +5335,11 @@ static int mtk_remove(struct platform_de
+@@ -5118,6 +5343,11 @@ static int mtk_remove(struct platform_de
mtk_stop(eth->netdev[i]);
mac = netdev_priv(eth->netdev[i]);
phylink_disconnect_phy(mac->phylink);
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