1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/net/ethernet/apm/xgene-v2/enet.c b/drivers/net/ethernet/apm/xgene-v2/enet.c
new file mode 100644
index 000000000..a8c6b379d
--- /dev/null
+++ b/drivers/net/ethernet/apm/xgene-v2/enet.c
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Applied Micro X-Gene SoC Ethernet v2 Driver
+ *
+ * Copyright (c) 2017, Applied Micro Circuits Corporation
+ * Author(s): Iyappan Subramanian <isubramanian@apm.com>
+ *	      Keyur Chudgar <kchudgar@apm.com>
+ */
+
+#include "main.h"
+
+void xge_wr_csr(struct xge_pdata *pdata, u32 offset, u32 val)
+{
+	void __iomem *addr = pdata->resources.base_addr + offset;
+
+	iowrite32(val, addr);
+}
+
+u32 xge_rd_csr(struct xge_pdata *pdata, u32 offset)
+{
+	void __iomem *addr = pdata->resources.base_addr + offset;
+
+	return ioread32(addr);
+}
+
+int xge_port_reset(struct net_device *ndev)
+{
+	struct xge_pdata *pdata = netdev_priv(ndev);
+	struct device *dev = &pdata->pdev->dev;
+	u32 data, wait = 10;
+
+	xge_wr_csr(pdata, ENET_CLKEN, 0x3);
+	xge_wr_csr(pdata, ENET_SRST, 0xf);
+	xge_wr_csr(pdata, ENET_SRST, 0);
+	xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 1);
+	xge_wr_csr(pdata, CFG_MEM_RAM_SHUTDOWN, 0);
+
+	do {
+		usleep_range(100, 110);
+		data = xge_rd_csr(pdata, BLOCK_MEM_RDY);
+	} while (data != MEM_RDY && wait--);
+
+	if (data != MEM_RDY) {
+		dev_err(dev, "ECC init failed: %x\n", data);
+		return -ETIMEDOUT;
+	}
+
+	xge_wr_csr(pdata, ENET_SHIM, DEVM_ARAUX_COH | DEVM_AWAUX_COH);
+
+	return 0;
+}
+
+static void xge_traffic_resume(struct net_device *ndev)
+{
+	struct xge_pdata *pdata = netdev_priv(ndev);
+
+	xge_wr_csr(pdata, CFG_FORCE_LINK_STATUS_EN, 1);
+	xge_wr_csr(pdata, FORCE_LINK_STATUS, 1);
+
+	xge_wr_csr(pdata, CFG_LINK_AGGR_RESUME, 1);
+	xge_wr_csr(pdata, RX_DV_GATE_REG, 1);
+}
+
+void xge_port_init(struct net_device *ndev)
+{
+	struct xge_pdata *pdata = netdev_priv(ndev);
+
+	pdata->phy_speed = SPEED_1000;
+	xge_mac_init(pdata);
+	xge_traffic_resume(ndev);
+}