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net: mt7628-eth: add support to isolate LAN/WAN ports

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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>
This commit is contained in:
Weijie Gao 2019-09-25 17:45:35 +08:00 committed by Daniel Schwierzeck
parent c88ee3ea0a
commit 877d03903c
1 changed files with 32 additions and 0 deletions
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32
drivers/net/mt7628-eth.c
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@ -57,6 +57,11 @@
/* Ethernet switch register */ /* Ethernet switch register */
#define MT7628_SWITCH_FCT0 0x0008 #define MT7628_SWITCH_FCT0 0x0008
#define MT7628_SWITCH_PFC1 0x0014 #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_FPA 0x0084
#define MT7628_SWITCH_SOCPC 0x008c #define MT7628_SWITCH_SOCPC 0x008c
#define MT7628_SWITCH_POC0 0x0090 #define MT7628_SWITCH_POC0 0x0090
@ -140,6 +145,8 @@ struct mt7628_eth_dev {
struct reset_ctl rst_ephy; struct reset_ctl rst_ephy;
struct phy_device *phy; struct phy_device *phy;
int wan_port;
}; };
static int mt7628_eth_free_pkt(struct udevice *dev, uchar *packet, int length); 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) static void rt305x_esw_init(struct mt7628_eth_dev *priv)
{ {
void __iomem *base = priv->eth_sw_base; void __iomem *base = priv->eth_sw_base;
void __iomem *reg;
u32 val = 0, pvid;
int i;
/* /*
* FC_RLS_TH=200, FC_SET_TH=160 * 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) */ /* 1us cycle number=125 (FE's clock=125Mhz) */
writel(0x7d000000, base + MT7628_SWITCH_BMU_CTRL); 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 PHY */
reset_assert(&priv->rst_ephy); reset_assert(&priv->rst_ephy);
reset_deassert(&priv->rst_ephy); reset_deassert(&priv->rst_ephy);
@ -543,6 +572,9 @@ static int mt7628_eth_probe(struct udevice *dev)
return ret; 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) */ /* Put rx and tx rings into KSEG1 area (uncached) */
priv->tx_ring = (struct fe_tx_dma *) priv->tx_ring = (struct fe_tx_dma *)
KSEG1ADDR(memalign(ARCH_DMA_MINALIGN, KSEG1ADDR(memalign(ARCH_DMA_MINALIGN,