This patch add support for mt7628-eth to isolate LAN/WAN ports mainly to prevent LAN devices from getting IP address from WAN.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- drivers/net/mt7628-eth.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+)
diff --git a/drivers/net/mt7628-eth.c b/drivers/net/mt7628-eth.c index d77da26d50..a1d12f6902 100644 --- a/drivers/net/mt7628-eth.c +++ b/drivers/net/mt7628-eth.c @@ -57,6 +57,11 @@ /* Ethernet switch register */ #define MT7628_SWITCH_FCT0 0x0008 #define MT7628_SWITCH_PFC1 0x0014 +#define MT7628_SWITCH_PVIDC0 0x0040 +#define MT7628_SWITCH_PVIDC1 0x0044 +#define MT7628_SWITCH_PVIDC2 0x0048 +#define MT7628_SWITCH_PVIDC3 0x004c +#define MT7628_SWITCH_VMSC0 0x0070 #define MT7628_SWITCH_FPA 0x0084 #define MT7628_SWITCH_SOCPC 0x008c #define MT7628_SWITCH_POC0 0x0090 @@ -140,6 +145,8 @@ struct mt7628_eth_dev { struct reset_ctl rst_ephy;
struct phy_device *phy; + + int wan_port; };
static int mt7628_eth_free_pkt(struct udevice *dev, uchar *packet, int length); @@ -272,6 +279,9 @@ static void mt7628_ephy_init(struct mt7628_eth_dev *priv) static void rt305x_esw_init(struct mt7628_eth_dev *priv) { void __iomem *base = priv->eth_sw_base; + void __iomem *reg; + u32 val = 0, pvid; + int i;
/* * FC_RLS_TH=200, FC_SET_TH=160 @@ -293,6 +303,25 @@ static void rt305x_esw_init(struct mt7628_eth_dev *priv) /* 1us cycle number=125 (FE's clock=125Mhz) */ writel(0x7d000000, base + MT7628_SWITCH_BMU_CTRL);
+ /* LAN/WAN partition, WAN port will be unusable in u-boot network */ + if (priv->wan_port >= 0 && priv->wan_port < 6) { + for (i = 0; i < 8; i++) { + pvid = i == priv->wan_port ? 2 : 1; + reg = base + MT7628_SWITCH_PVIDC0 + (i / 2) * 4; + if (i % 2 == 0) { + val = pvid; + } else { + val |= (pvid << 12); + writel(val, reg); + } + } + + val = 0xffff407f; + val |= 1 << (8 + priv->wan_port); + val &= ~(1 << priv->wan_port); + writel(val, base + MT7628_SWITCH_VMSC0); + } + /* Reset PHY */ reset_assert(&priv->rst_ephy); reset_deassert(&priv->rst_ephy); @@ -543,6 +572,9 @@ static int mt7628_eth_probe(struct udevice *dev) return ret; }
+ /* WAN port will be isolated from LAN ports */ + priv->wan_port = dev_read_u32_default(dev, "mediatek,wan-port", -1); + /* Put rx and tx rings into KSEG1 area (uncached) */ priv->tx_ring = (struct fe_tx_dma *) KSEG1ADDR(memalign(ARCH_DMA_MINALIGN,