net: ftgmac100: Add support for the Aspeed SoC

The Faraday ftgmac100 MAC controllers as found on the Aspeed SoCs have
some slight differences in the HW interface (End-Of-Rx/Tx-Ring bits).

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/configs/evb-ast2500_defconfig b/configs/evb-ast2500_defconfig
index 88230f4a12db85723e16a1289359c0f8de98a495..32581f5ada541f45961be43b62c18324f19397a0 100644 (file)
--- a/configs/evb-ast2500_defconfig
+++ b/configs/evb-ast2500_defconfig
@@ -25,3 +25,11 @@ CONFIG_SYS_NS16550=y
 CONFIG_SYSRESET=y
 CONFIG_TIMER=y
 CONFIG_WDT=y
+CONFIG_NETDEVICES=y
+CONFIG_PHY=y
+CONFIG_DM_ETH=y
+CONFIG_FTGMAC100=y
+CONFIG_PHY_REALTEK=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MII=y

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
index 798977616756b9f6d1d60a1bd7af51aa1838cd66..92c38a81bd352b9311f7087bc67545c14b0f8a93 100644 (file)
--- a/drivers/net/ftgmac100.c
+++ b/drivers/net/ftgmac100.c
@@ -43,6 +43,14 @@
  */
 #define MDC_CYCTHR                     0x34
 
+/*
+ * ftgmac100 model variants
+ */
+enum ftgmac100_model {
+       FTGMAC100_MODEL_FARADAY,
+       FTGMAC100_MODEL_ASPEED,
+};
+
 /**
  * struct ftgmac100_data - private data for the FTGMAC100 driver
  *
@@ -57,6 +65,8 @@
  * @phy_mode: The mode of the PHY interface (rgmii, rmii, ...)
  * @max_speed: Maximum speed of Ethernet connection supported by MAC
  * @clks: The bulk of clocks assigned to the device in the DT
+ * @rxdes0_edorr_mask: The bit number identifying the end of the RX ring buffer
+ * @txdes0_edotr_mask: The bit number identifying the end of the TX ring buffer
  */
 struct ftgmac100_data {
        struct ftgmac100 *iobase;
@@ -73,6 +83,10 @@ struct ftgmac100_data {
        u32 max_speed;
 
        struct clk_bulk clks;
+
+       /* End of RX/TX ring buffer bits. Depend on model */
+       u32 rxdes0_edorr_mask;
+       u32 txdes0_edotr_mask;
 };
 
 /*
@@ -293,7 +307,7 @@ static int ftgmac100_start(struct udevice *dev)
                priv->txdes[i].txdes3 = 0;
                priv->txdes[i].txdes0 = 0;
        }
-       priv->txdes[PKTBUFSTX - 1].txdes0 = FTGMAC100_TXDES0_EDOTR;
+       priv->txdes[PKTBUFSTX - 1].txdes0 = priv->txdes0_edotr_mask;
 
        start = (ulong)&priv->txdes[0];
        end = start + roundup(sizeof(priv->txdes), ARCH_DMA_MINALIGN);
@@ -303,7 +317,7 @@ static int ftgmac100_start(struct udevice *dev)
                priv->rxdes[i].rxdes3 = (unsigned int)net_rx_packets[i];
                priv->rxdes[i].rxdes0 = 0;
        }
-       priv->rxdes[PKTBUFSRX - 1].rxdes0 = FTGMAC100_RXDES0_EDORR;
+       priv->rxdes[PKTBUFSRX - 1].rxdes0 = priv->rxdes0_edorr_mask;
 
        start = (ulong)&priv->rxdes[0];
        end = start + roundup(sizeof(priv->rxdes), ARCH_DMA_MINALIGN);
@@ -456,7 +470,7 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length)
        flush_dcache_range(data_start, data_end);
 
        /* Only one segment on TXBUF */
-       curr_des->txdes0 &= FTGMAC100_TXDES0_EDOTR;
+       curr_des->txdes0 &= priv->txdes0_edotr_mask;
        curr_des->txdes0 |= FTGMAC100_TXDES0_FTS |
                            FTGMAC100_TXDES0_LTS |
                            FTGMAC100_TXDES0_TXBUF_SIZE(length) |
@@ -508,6 +522,14 @@ static int ftgmac100_ofdata_to_platdata(struct udevice *dev)
 
        pdata->max_speed = dev_read_u32_default(dev, "max-speed", 0);
 
+       if (dev_get_driver_data(dev) == FTGMAC100_MODEL_ASPEED) {
+               priv->rxdes0_edorr_mask = BIT(30);
+               priv->txdes0_edotr_mask = BIT(30);
+       } else {
+               priv->rxdes0_edorr_mask = BIT(15);
+               priv->txdes0_edotr_mask = BIT(15);
+       }
+
        return clk_get_bulk(dev, &priv->clks);
 }
 
@@ -567,7 +589,8 @@ static const struct eth_ops ftgmac100_ops = {
 };
 
 static const struct udevice_id ftgmac100_ids[] = {
-       { .compatible = "faraday,ftgmac100" },
+       { .compatible = "faraday,ftgmac100",  .data = FTGMAC100_MODEL_FARADAY },
+       { .compatible = "aspeed,ast2500-mac", .data = FTGMAC100_MODEL_ASPEED  },
        { }
 };