[PATCH 4.9 004/139] r8169: fix data corruption issue on RTL8402

Greg Kroah-Hartman
2020-10-27T14:03:16Z

From: Heiner Kallweit <hkallweit1@gmail.com>

[ Upstream commit ef9da46ddef071e1bbb943afbbe9b38771855554 ]

Petr reported that after resume from suspend RTL8402 partially
truncates incoming packets, and re-initializing register RxConfig
before the actual chip re-initialization sequence is needed to avoid
the issue.

Reported-by: Petr Tesarik <ptesarik@suse.cz>
Proposed-by: Petr Tesarik <ptesarik@suse.cz>
Tested-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/realtek/r8169.c | 108 ++++++++++++++++++-----------------
1 file changed, 56 insertions(+), 52 deletions(-)

--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -4476,6 +4476,58 @@ static void rtl_rar_set(struct rtl8169_p
rtl_unlock_work(tp);
}

+static void rtl_init_rxcfg(struct rtl8169_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+
+ switch (tp->mac_version) {
+ case RTL_GIGA_MAC_VER_01:
+ case RTL_GIGA_MAC_VER_02:
+ case RTL_GIGA_MAC_VER_03:
+ case RTL_GIGA_MAC_VER_04:
+ case RTL_GIGA_MAC_VER_05:
+ case RTL_GIGA_MAC_VER_06:
+ case RTL_GIGA_MAC_VER_10:
+ case RTL_GIGA_MAC_VER_11:
+ case RTL_GIGA_MAC_VER_12:
+ case RTL_GIGA_MAC_VER_13:
+ case RTL_GIGA_MAC_VER_14:
+ case RTL_GIGA_MAC_VER_15:
+ case RTL_GIGA_MAC_VER_16:
+ case RTL_GIGA_MAC_VER_17:
+ RTL_W32(RxConfig, RX_FIFO_THRESH | RX_DMA_BURST);
+ break;
+ case RTL_GIGA_MAC_VER_18:
+ case RTL_GIGA_MAC_VER_19:
+ case RTL_GIGA_MAC_VER_20:
+ case RTL_GIGA_MAC_VER_21:
+ case RTL_GIGA_MAC_VER_22:
+ case RTL_GIGA_MAC_VER_23:
+ case RTL_GIGA_MAC_VER_24:
+ case RTL_GIGA_MAC_VER_34:
+ case RTL_GIGA_MAC_VER_35:
+ RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
+ break;
+ case RTL_GIGA_MAC_VER_40:
+ case RTL_GIGA_MAC_VER_41:
+ case RTL_GIGA_MAC_VER_42:
+ case RTL_GIGA_MAC_VER_43:
+ case RTL_GIGA_MAC_VER_44:
+ case RTL_GIGA_MAC_VER_45:
+ case RTL_GIGA_MAC_VER_46:
+ case RTL_GIGA_MAC_VER_47:
+ case RTL_GIGA_MAC_VER_48:
+ case RTL_GIGA_MAC_VER_49:
+ case RTL_GIGA_MAC_VER_50:
+ case RTL_GIGA_MAC_VER_51:
+ RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST | RX_EARLY_OFF);
+ break;
+ default:
+ RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST);
+ break;
+ }
+}
+
static int rtl_set_mac_address(struct net_device *dev, void *p)
{
struct rtl8169_private *tp = netdev_priv(dev);
@@ -4494,6 +4546,10 @@ static int rtl_set_mac_address(struct ne

pm_runtime_put_noidle(d);

+ /* Reportedly at least Asus X453MA truncates packets otherwise */
+ if (tp->mac_version == RTL_GIGA_MAC_VER_37)
+ rtl_init_rxcfg(tp);
+
return 0;
}

@@ -4930,58 +4986,6 @@ static void rtl_init_pll_power_ops(struc
break;
}
}
-
-static void rtl_init_rxcfg(struct rtl8169_private *tp)
-{
- void __iomem *ioaddr = tp->mmio_addr;
-
- switch (tp->mac_version) {
- case RTL_GIGA_MAC_VER_01:
- case RTL_GIGA_MAC_VER_02:
- case RTL_GIGA_MAC_VER_03:
- case RTL_GIGA_MAC_VER_04:
- case RTL_GIGA_MAC_VER_05:
- case RTL_GIGA_MAC_VER_06:
- case RTL_GIGA_MAC_VER_10:
- case RTL_GIGA_MAC_VER_11:
- case RTL_GIGA_MAC_VER_12:
- case RTL_GIGA_MAC_VER_13:
- case RTL_GIGA_MAC_VER_14:
- case RTL_GIGA_MAC_VER_15:
- case RTL_GIGA_MAC_VER_16:
- case RTL_GIGA_MAC_VER_17:
- RTL_W32(RxConfig, RX_FIFO_THRESH | RX_DMA_BURST);
- break;
- case RTL_GIGA_MAC_VER_18:
- case RTL_GIGA_MAC_VER_19:
- case RTL_GIGA_MAC_VER_20:
- case RTL_GIGA_MAC_VER_21:
- case RTL_GIGA_MAC_VER_22:
- case RTL_GIGA_MAC_VER_23:
- case RTL_GIGA_MAC_VER_24:
- case RTL_GIGA_MAC_VER_34:
- case RTL_GIGA_MAC_VER_35:
- RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST);
- break;
- case RTL_GIGA_MAC_VER_40:
- case RTL_GIGA_MAC_VER_41:
- case RTL_GIGA_MAC_VER_42:
- case RTL_GIGA_MAC_VER_43:
- case RTL_GIGA_MAC_VER_44:
- case RTL_GIGA_MAC_VER_45:
- case RTL_GIGA_MAC_VER_46:
- case RTL_GIGA_MAC_VER_47:
- case RTL_GIGA_MAC_VER_48:
- case RTL_GIGA_MAC_VER_49:
- case RTL_GIGA_MAC_VER_50:
- case RTL_GIGA_MAC_VER_51:
- RTL_W32(RxConfig, RX128_INT_EN | RX_MULTI_EN | RX_DMA_BURST | RX_EARLY_OFF);
- break;
- default:
- RTL_W32(RxConfig, RX128_INT_EN | RX_DMA_BURST);
- break;
- }
-}

static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
{