openwrt/target/linux/generic/backport-5.15/730-10-v6.3-net-ethernet-mtk_eth_soc-drop-packets-to-WDMA-if-the.patch
John Audia d59d69f9e1 kernel: bump 5.15 to 5.15.103
Manually rebased:
        backport-5.15/704-15-v5.19-net-mtk_eth_soc-move-MAC_MCR-setting-to-mac_finish.patch

Removed upstreamed:
        backport-5.15/060-v6.0-01-tools-build-Add-feature-test-for-init_disassemble_in.patch[1]
        backport-5.15/060-v6.0-02-tools-include-add-dis-asm-compat.h-to-handle-version.patch[2]
        backport-5.15/060-v6.0-03-tools-perf-Fix-compilation-error-with-new-binutils.patch[3]
        backport-5.15/060-v6.0-04-tools-bpf_jit_disasm-Fix-compilation-error-with-new-.patch[4]
        backport-5.15/060-v6.0-05-tools-bpftool-Fix-compilation-error-with-new-binutil.patch[5]
        pending-5.15/733-02-net-ethernet-mtk_eth_soc-fix-RX-data-corruption-issu.patch[6]
        bcm47xx/patches-5.15/170-bgmac-fix-initial-chip-reset-to-support-BCM5358.patch[7]

All other patches automatically rebased.

1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=51b99dc38c1a053e2e732d7f9e2740e343ae7eae
2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=451c9d7b16169645ed291ebb2ca9844caa088f2d
3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=97f005c0bdbaf656a7808586d234965385a06c58
4. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=1c27fab243333821375e4d63128d60093fdbe149
5. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=4441a90091931fd81607567961dc122f24f735bb
6. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=2adc29350a5b4669544566f71f208d2abaec60ab
7. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.15.103&id=04bfc5bcdfc0fdb73587487c71b04d63807ae15a

Build system: x86_64
Build-tested: bcm2711/RPi4B, ramips/tplink_archer-a6-v3, filogic/xiaomi_redmi-router-ax6000-ubootmod
Run-tested: bcm2711/RPi4B, ramips/tplink_archer-a6-v3, filogic/xiaomi_redmi-router-ax6000-ubootmod

Signed-off-by: John Audia <therealgraysky@proton.me>
2023-03-25 16:01:23 +01:00

38 lines
1.2 KiB
Diff

From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 3 Nov 2022 17:46:25 +0100
Subject: [PATCH] net: ethernet: mtk_eth_soc: drop packets to WDMA if the
ring is full
Improves handling of DMA ring overflow.
Clarify other WDMA drop related comment.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -3712,9 +3712,12 @@ static int mtk_hw_init(struct mtk_eth *e
mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP);
if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2)) {
- /* PSE should not drop port8 and port9 packets */
+ /* PSE should not drop port8 and port9 packets from WDMA Tx */
mtk_w32(eth, 0x00000300, PSE_DROP_CFG);
+ /* PSE should drop packets to port 8/9 on WDMA Rx ring full */
+ mtk_w32(eth, 0x00000300, PSE_PPE0_DROP);
+
/* PSE Free Queue Flow Control */
mtk_w32(eth, 0x01fa01f4, PSE_FQFC_CFG2);
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -140,6 +140,7 @@
#define PSE_FQFC_CFG1 0x100
#define PSE_FQFC_CFG2 0x104
#define PSE_DROP_CFG 0x108
+#define PSE_PPE0_DROP 0x110
/* PSE Input Queue Reservation Register*/
#define PSE_IQ_REV(x) (0x140 + (((x) - 1) << 2))