Merge branch 'master' into openslxopenslx

1 files changed, 663 insertions, 0 deletions

diff --git a/src/drivers/net/dwmac.c b/src/drivers/net/dwmac.c
new file mode 100644
index 000000000..f581a48a4
--- /dev/null
+++ b/src/drivers/net/dwmac.c
@@ -0,0 +1,663 @@
+/*
+ * Copyright (C) 2025 Michael Brown <mbrown@fensystems.co.uk>.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * You can also choose to distribute this program under the terms of
+ * the Unmodified Binary Distribution Licence (as given in the file
+ * COPYING.UBDL), provided that you have satisfied its requirements.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <byteswap.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/ethernet.h>
+#include <ipxe/if_ether.h>
+#include <ipxe/iobuf.h>
+#include <ipxe/timer.h>
+#include <ipxe/devtree.h>
+#include <ipxe/fdt.h>
+#include "dwmac.h"
+
+/** @file
+ *
+ * Synopsys DesignWare MAC network driver
+ *
+ */
+
+/******************************************************************************
+ *
+ * Debug
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Dump MAC registers (for debugging)
+ *
+ * @v dwmac		DesignWare MAC device
+ */
+static void dwmac_dump_mac ( struct dwmac *dwmac ) {
+
+	/* Do nothing unless debugging is enabled */
+	if ( ! DBG_LOG )
+		return;
+
+	/* Dump MAC registers */
+	DBGC ( dwmac, "DWMAC %s ver %08x cfg %08x flt %08x flo %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_VER ),
+	       readl ( dwmac->regs + DWMAC_CFG ),
+	       readl ( dwmac->regs + DWMAC_FILTER ),
+	       readl ( dwmac->regs + DWMAC_FLOW ) );
+	DBGC ( dwmac, "DWMAC %s isr %08x dbg %08x gmi %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_ISR ),
+	       readl ( dwmac->regs + DWMAC_DEBUG ),
+	       readl ( dwmac->regs + DWMAC_GMII ) );
+}
+
+/**
+ * Dump DMA registers (for debugging)
+ *
+ * @v dwmac		DesignWare MAC device
+ */
+static void dwmac_dump_dma ( struct dwmac *dwmac ) {
+	uint32_t status;
+
+	/* Do nothing unless debugging is enabled */
+	if ( ! DBG_LOG )
+		return;
+
+	/* Dump DMA registers */
+	status = readl ( dwmac->regs + DWMAC_STATUS );
+	DBGC ( dwmac, "DWMAC %s bus %08x fea %08x axi %08x ahb %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_BUS ),
+	       readl ( dwmac->regs + DWMAC_FEATURE ),
+	       readl ( dwmac->regs + DWMAC_AXI ),
+	       readl ( dwmac->regs + DWMAC_AHB ) );
+	DBGC ( dwmac, "DWMAC %s opm %08x sta %08x drp %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_OP ),
+	       status, readl ( dwmac->regs + DWMAC_DROP ) );
+	DBGC ( dwmac, "DWMAC %s txb %08x txd %08x txb %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_TXBASE ),
+	       readl ( dwmac->regs + DWMAC_TXDESC ),
+	       readl ( dwmac->regs + DWMAC_TXBUF ) );
+	DBGC ( dwmac, "DWMAC %s rxb %08x rxd %08x rxb %08x\n",
+	       dwmac->name, readl ( dwmac->regs + DWMAC_RXBASE ),
+	       readl ( dwmac->regs + DWMAC_RXDESC ),
+	       readl ( dwmac->regs + DWMAC_RXBUF ) );
+
+	/* Clear sticky bits in status register, since nothing else will */
+	writel ( status, ( dwmac->regs + DWMAC_STATUS ) );
+}
+
+/**
+ * Dump all registers (for debugging)
+ *
+ * @v dwmac		DesignWare MAC device
+ */
+static void __attribute__ (( unused )) dwmac_dump ( struct dwmac *dwmac ) {
+
+	/* Dump MAC and DMA registers */
+	dwmac_dump_mac ( dwmac );
+	dwmac_dump_dma ( dwmac );
+}
+
+/******************************************************************************
+ *
+ * Device reset
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Reset hardware
+ *
+ * @v dwmac		DesignWare MAC device
+ * @ret rc		Return status code
+ */
+static int dwmac_reset ( struct dwmac *dwmac ) {
+	unsigned int i;
+	uint32_t bus;
+
+	/* Trigger software reset */
+	writel ( DWMAC_BUS_SWR, ( dwmac->regs + DWMAC_BUS ) );
+
+	/* Wait for reset to complete */
+	for ( i = 0 ; i < DWMAC_RESET_MAX_WAIT_MS ; i++ ) {
+
+		/* Delay */
+		mdelay ( 1 );
+
+		/* Check for reset completion */
+		bus = readl ( dwmac->regs + DWMAC_BUS );
+		if ( ! ( bus & DWMAC_BUS_SWR ) )
+			return 0;
+	}
+
+	DBGC ( dwmac, "DWMAC %s timed out waiting for reset\n",
+	       dwmac->name );
+	return -ETIMEDOUT;
+}
+
+/******************************************************************************
+ *
+ * Link state
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Check link state
+ *
+ * @v netdev		Network device
+ */
+static void dwmac_check_link ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	uint32_t gmii;
+
+	/* Read SGMII/RGMII link status */
+	gmii = readl ( dwmac->regs + DWMAC_GMII );
+	DBGC ( dwmac, "DWMAC %s GMII link status %#08x\n", dwmac->name, gmii );
+
+	/* Update network device */
+	if ( gmii & DWMAC_GMII_LINK ) {
+		netdev_link_up ( netdev );
+	} else {
+		netdev_link_down ( netdev );
+	}
+}
+
+/******************************************************************************
+ *
+ * Network device interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Create descriptor ring
+ *
+ * @v dwmac		DesignWare MAC device
+ * @v ring		Descriptor ring
+ * @ret rc		Return status code
+ */
+static int dwmac_create_ring ( struct dwmac *dwmac, struct dwmac_ring *ring ) {
+	struct dwmac_descriptor *desc;
+	struct dwmac_descriptor *next;
+	physaddr_t base;
+	unsigned int i;
+
+	/* Allocate descriptor ring (on its own size) */
+	ring->desc = dma_alloc ( dwmac->dma, &ring->map, ring->len, ring->len );
+	if ( ! ring->desc )
+		return -ENOMEM;
+
+	/* Initialise descriptor ring */
+	memset ( ring->desc, 0, ring->len );
+	for ( i = 0 ; i < ring->count ; i++ ) {
+		desc = &ring->desc[i];
+		desc->size = cpu_to_le16 ( DWMAC_RX_LEN |
+					   DWMAC_SIZE_RX_CHAIN );
+		desc->ctrl = ring->ctrl;
+		assert ( desc->ctrl & DWMAC_CTRL_CHAIN );
+		next = &ring->desc[ ( i + 1 ) & ( ring->count - 1 ) ];
+		desc->next = dma ( &ring->map, next );
+	}
+	wmb();
+
+	/* Program ring address */
+	base = dma ( &ring->map, ring->desc );
+	assert ( base == ( ( uint32_t ) base ) );
+	writel ( base, ( dwmac->regs + DWMAC_DMA + ring->qbase ) );
+
+	DBGC ( dwmac, "DWMAC %s ring %02x is at [%08lx,%08lx)\n",
+	       dwmac->name, ring->qbase, virt_to_phys ( ring->desc ),
+	       ( virt_to_phys ( ring->desc ) + ring->len ) );
+	return 0;
+}
+
+/**
+ * Destroy descriptor ring
+ *
+ * @v dwmac		DesignWare MAC device
+ * @v ring		Descriptor ring
+ */
+static void dwmac_destroy_ring ( struct dwmac *dwmac,
+				 struct dwmac_ring *ring ) {
+
+	/* Clear ring address */
+	writel ( 0, ( dwmac->regs + DWMAC_DMA + ring->qbase ) );
+
+	/* Free descriptor ring */
+	dma_free ( &ring->map, ring->desc, ring->len );
+	ring->desc = NULL;
+	ring->prod = 0;
+	ring->cons = 0;
+}
+
+/**
+ * Refill receive descriptor ring
+ *
+ * @v dwmac		DesignWare MAC device
+ */
+static void dwmac_refill_rx ( struct dwmac *dwmac ) {
+	struct dwmac_descriptor *rx;
+	struct io_buffer *iobuf;
+	unsigned int rx_idx;
+	unsigned int refilled = 0;
+
+	/* Refill ring */
+	while ( ( dwmac->rx.prod - dwmac->rx.cons ) != DWMAC_NUM_RX_DESC ) {
+
+		/* Allocate I/O buffer */
+		iobuf = alloc_rx_iob ( DWMAC_RX_LEN, dwmac->dma );
+		if ( ! iobuf ) {
+			/* Wait for next refill */
+			break;
+		}
+
+		/* Get next receive descriptor */
+		rx_idx = ( dwmac->rx.prod++ % DWMAC_NUM_RX_DESC );
+		rx = &dwmac->rx.desc[rx_idx];
+
+		/* Populate receive descriptor */
+		rx->addr = cpu_to_le32 ( iob_dma ( iobuf ) );
+		wmb();
+		rx->stat = cpu_to_le32 ( DWMAC_STAT_OWN );
+
+		/* Record I/O buffer */
+		assert ( dwmac->rx_iobuf[rx_idx] == NULL );
+		dwmac->rx_iobuf[rx_idx] = iobuf;
+
+		DBGC2 ( dwmac, "DWMAC %s RX %d is [%08lx,%08lx)\n",
+			dwmac->name, rx_idx, virt_to_phys ( iobuf->data ),
+			( virt_to_phys ( iobuf->data ) + DWMAC_RX_LEN ) );
+		refilled++;
+	}
+
+	/* Trigger poll */
+	if ( refilled ) {
+		wmb();
+		writel ( 0, ( dwmac->regs + DWMAC_RXPOLL ) );
+	}
+}
+
+/**
+ * Open network device
+ *
+ * @v netdev		Network device
+ * @ret rc		Return status code
+ */
+static int dwmac_open ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	union dwmac_mac mac;
+	int rc;
+
+	/* Create transmit descriptor ring */
+	if ( ( rc = dwmac_create_ring ( dwmac, &dwmac->tx ) ) != 0 )
+		goto err_create_tx;
+
+	/* Create receive descriptor ring */
+	if ( ( rc = dwmac_create_ring ( dwmac, &dwmac->rx ) ) != 0 )
+		goto err_create_rx;
+
+	/* Set MAC address */
+	memcpy ( mac.raw, netdev->ll_addr, ETH_ALEN );
+	writel ( mac.reg.addrl, ( dwmac->regs + DWMAC_ADDRL ) );
+	writel ( mac.reg.addrh, ( dwmac->regs + DWMAC_ADDRH ) );
+
+	/* Enable promiscuous mode */
+	writel ( DWMAC_FILTER_PR, ( dwmac->regs + DWMAC_FILTER ) );
+
+	/* Enable transmit and receive */
+	writel ( ( DWMAC_OP_TXSF | DWMAC_OP_RXSF |
+		   DWMAC_OP_TXEN | DWMAC_OP_RXEN ),
+		 ( dwmac->regs + DWMAC_OP ) );
+	writel ( ( DWMAC_CFG_DO | DWMAC_CFG_FD |
+		   DWMAC_CFG_TXEN | DWMAC_CFG_RXEN ),
+		 ( dwmac->regs + DWMAC_CFG ) );
+
+	/* Refill receive descriptor ring */
+	dwmac_refill_rx ( dwmac );
+
+	/* Update link state */
+	dwmac_check_link ( netdev );
+
+	return 0;
+
+	dwmac_destroy_ring ( dwmac, &dwmac->rx );
+ err_create_rx:
+	dwmac_destroy_ring ( dwmac, &dwmac->tx );
+ err_create_tx:
+	return rc;
+}
+
+/**
+ * Close network device
+ *
+ * @v netdev		Network device
+ */
+static void dwmac_close ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	unsigned int i;
+
+	/* Reset NIC */
+	dwmac_reset ( dwmac );
+
+	/* Discard unused receive buffers */
+	for ( i = 0 ; i < DWMAC_NUM_RX_DESC ; i++ ) {
+		if ( dwmac->rx_iobuf[i] )
+			free_rx_iob ( dwmac->rx_iobuf[i] );
+		dwmac->rx_iobuf[i] = NULL;
+	}
+
+	/* Destroy receive descriptor ring */
+	dwmac_destroy_ring ( dwmac, &dwmac->rx );
+
+	/* Destroy transmit descriptor ring */
+	dwmac_destroy_ring ( dwmac, &dwmac->tx );
+}
+
+/**
+ * Transmit packet
+ *
+ * @v netdev		Network device
+ * @v iobuf		I/O buffer
+ * @ret rc		Return status code
+ */
+static int dwmac_transmit ( struct net_device *netdev,
+			    struct io_buffer *iobuf ) {
+	struct dwmac *dwmac = netdev->priv;
+	struct dwmac_descriptor *tx;
+	unsigned int tx_idx;
+
+	/* Get next transmit descriptor */
+	if ( ( dwmac->tx.prod - dwmac->tx.cons ) >= DWMAC_NUM_TX_DESC ) {
+		DBGC ( dwmac, "DWMAC %s out of transmit descriptors\n",
+		       dwmac->name );
+		return -ENOBUFS;
+	}
+	tx_idx = ( dwmac->tx.prod % DWMAC_NUM_TX_DESC );
+	tx = &dwmac->tx.desc[tx_idx];
+
+	/* Update producer index */
+	dwmac->tx.prod++;
+
+	/* Populate transmit descriptor */
+	tx->size = cpu_to_le16 ( iob_len ( iobuf ) );
+	tx->addr = cpu_to_le32 ( iob_dma ( iobuf ) );
+	wmb();
+	tx->stat = cpu_to_le32 ( DWMAC_STAT_OWN | DWMAC_STAT_TX_LAST |
+				 DWMAC_STAT_TX_FIRST | DWMAC_STAT_TX_CHAIN );
+	wmb();
+
+	/* Initiate transmission */
+	writel ( 0, ( dwmac->regs + DWMAC_TXPOLL ) );
+
+	DBGC2 ( dwmac, "DWMAC %s TX %d is [%08lx,%08lx)\n",
+		dwmac->name, tx_idx, virt_to_phys ( iobuf->data ),
+		( virt_to_phys ( iobuf->data ) + iob_len ( iobuf ) ) );
+	return 0;
+}
+
+/**
+ * Poll for completed packets
+ *
+ * @V netdev		Network device
+ */
+static void dwmac_poll_tx ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	struct dwmac_descriptor *tx;
+	unsigned int tx_idx;
+
+	/* Check for completed packets */
+	while ( dwmac->tx.cons != dwmac->tx.prod ) {
+
+		/* Get next transmit descriptor */
+		tx_idx = ( dwmac->tx.cons % DWMAC_NUM_TX_DESC );
+		tx = &dwmac->tx.desc[tx_idx];
+
+		/* Stop if descriptor is still owned by hardware */
+		if ( tx->stat & cpu_to_le32 ( DWMAC_STAT_OWN ) )
+			return;
+		dwmac->tx.cons++;
+
+		/* Report completion */
+		if ( tx->stat & cpu_to_le32 ( DWMAC_STAT_ERR ) ) {
+			DBGC ( dwmac, "DWMAC %s TX %d error %#08x\n",
+			       dwmac->name, tx_idx, le32_to_cpu ( tx->stat ) );
+			dwmac_dump ( dwmac );
+			netdev_tx_complete_next_err ( netdev, -EIO );
+		} else {
+			DBGC2 ( dwmac, "DWMAC %s TX %d complete\n",
+				dwmac->name, tx_idx );
+			netdev_tx_complete_next ( netdev );
+		}
+	}
+}
+
+/**
+ * Poll for received packets
+ *
+ * @v netdev		Network device
+ */
+static void dwmac_poll_rx ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	struct dwmac_descriptor *rx;
+	struct io_buffer *iobuf;
+	unsigned int rx_idx;
+	uint32_t stat;
+	size_t len;
+
+	/* Check for received packets */
+	while ( dwmac->rx.cons != dwmac->rx.prod ) {
+
+		/* Get next receive descriptor */
+		rx_idx = ( dwmac->rx.cons % DWMAC_NUM_RX_DESC );
+		rx = &dwmac->rx.desc[rx_idx];
+
+		/* Stop if descriptor is still in use */
+		if ( rx->stat & cpu_to_le32 ( DWMAC_STAT_OWN ) )
+			return;
+		dwmac->rx.cons++;
+
+		/* Consume I/O buffer */
+		iobuf = dwmac->rx_iobuf[rx_idx];
+		assert ( iobuf != NULL );
+		dwmac->rx_iobuf[rx_idx] = NULL;
+
+		/* Hand off to network stack */
+		stat = le32_to_cpu ( rx->stat );
+		assert ( stat & DWMAC_STAT_RX_FIRST );
+		assert ( stat & DWMAC_STAT_RX_LAST );
+		if ( stat & DWMAC_STAT_ERR ) {
+			DBGC ( dwmac, "DWMAC %s RX %d error %#08x\n",
+			       dwmac->name, rx_idx, stat );
+			dwmac_dump ( dwmac );
+			netdev_rx_err ( netdev, iobuf, -EIO );
+		} else {
+			len = ( DWMAC_STAT_RX_LEN ( stat ) - 4 /* CRC */ );
+			iob_put ( iobuf, len );
+			DBGC2 ( dwmac, "DWMAC %s RX %d complete (length "
+				"%zd)\n", dwmac->name, rx_idx, len );
+			netdev_rx ( netdev, iobuf );
+		}
+	}
+}
+
+/**
+ * Poll for completed and received packets
+ *
+ * @v netdev		Network device
+ */
+static void dwmac_poll ( struct net_device *netdev ) {
+	struct dwmac *dwmac = netdev->priv;
+	uint32_t status;
+
+	/* Check for link status changes */
+	status = readl ( dwmac->regs + DWMAC_STATUS );
+	if ( status & DWMAC_STATUS_LINK )
+		dwmac_check_link ( netdev );
+
+	/* Poll for TX competions, if applicable */
+	dwmac_poll_tx ( netdev );
+
+	/* Poll for RX completions */
+	dwmac_poll_rx ( netdev );
+
+	/* Refill RX ring */
+	dwmac_refill_rx ( dwmac );
+}
+
+/** DesignWare MAC network device operations */
+static struct net_device_operations dwmac_operations = {
+	.open		= dwmac_open,
+	.close		= dwmac_close,
+	.transmit	= dwmac_transmit,
+	.poll		= dwmac_poll,
+};
+
+/******************************************************************************
+ *
+ * Devicetree interface
+ *
+ ******************************************************************************
+ */
+
+/**
+ * Probe devicetree device
+ *
+ * @v dt		Devicetree device
+ * @v offset		Starting node offset
+ * @ret rc		Return status code
+ */
+static int dwmac_probe ( struct dt_device *dt, unsigned int offset ) {
+	struct net_device *netdev;
+	struct dwmac *dwmac;
+	union dwmac_mac mac;
+	uint32_t version;
+	int rc;
+
+	/* Allocate and initialise net device */
+	netdev = alloc_etherdev ( sizeof ( *dwmac ) );
+	if ( ! netdev ) {
+		rc = -ENOMEM;
+		goto err_alloc;
+	}
+	netdev_init ( netdev, &dwmac_operations );
+	dwmac = netdev->priv;
+	dt_set_drvdata ( dt, netdev );
+	netdev->dev = &dt->dev;
+	netdev->dma = &dt->dma;
+	memset ( dwmac, 0, sizeof ( *dwmac ) );
+	dwmac->dma = &dt->dma;
+	dwmac->name = netdev->dev->name;
+	dwmac_init_ring ( &dwmac->tx, DWMAC_NUM_TX_DESC, DWMAC_TXBASE,
+			  ( DWMAC_CTRL_TX_FIRST | DWMAC_CTRL_TX_LAST |
+			    DWMAC_CTRL_CHAIN ) );
+	dwmac_init_ring ( &dwmac->rx, DWMAC_NUM_RX_DESC, DWMAC_RXBASE,
+			  DWMAC_CTRL_CHAIN );
+
+	/* Map registers */
+	dwmac->regs = dt_ioremap ( dt, offset, DWMAC_REG_IDX, DWMAC_REG_LEN );
+	if ( ! dwmac->regs ) {
+		rc = -ENODEV;
+		goto err_ioremap;
+	}
+	version = readl ( dwmac->regs + DWMAC_VER );
+	DBGC ( dwmac, "DWMAC %s version %x.%x (user %x.%x)\n", dwmac->name,
+	       DWMAC_VER_CORE_MAJOR ( version ),
+	       DWMAC_VER_CORE_MINOR ( version ),
+	       DWMAC_VER_USER_MAJOR ( version ),
+	       DWMAC_VER_USER_MINOR ( version ) );
+
+	/* Fetch devicetree MAC address */
+	if ( ( rc = fdt_mac ( &sysfdt, offset, netdev ) ) != 0 ) {
+		DBGC ( dwmac, "DWMAC %s could not fetch MAC: %s\n",
+		       dwmac->name, strerror ( rc ) );
+		goto err_mac;
+	}
+
+	/* Fetch current MAC address, if set */
+	mac.reg.addrl = readl ( dwmac->regs + DWMAC_ADDRL );
+	mac.reg.addrh = readl ( dwmac->regs + DWMAC_ADDRH );
+	memcpy ( netdev->ll_addr, mac.raw, ETH_ALEN );
+
+	/* Reset the NIC */
+	if ( ( rc = dwmac_reset ( dwmac ) ) != 0 )
+		goto err_reset;
+
+	/* Register network device */
+	if ( ( rc = register_netdev ( netdev ) ) != 0 )
+		goto err_register_netdev;
+
+	/* Update link state */
+	dwmac_check_link ( netdev );
+
+	return 0;
+
+	unregister_netdev ( netdev );
+ err_register_netdev:
+	dwmac_reset ( dwmac );
+ err_reset:
+ err_mac:
+	iounmap ( dwmac->regs );
+ err_ioremap:
+	netdev_nullify ( netdev );
+	netdev_put ( netdev );
+ err_alloc:
+	return rc;
+}
+
+/**
+ * Remove devicetree device
+ *
+ * @v dt		Devicetree device
+ */
+static void dwmac_remove ( struct dt_device *dt ) {
+	struct net_device *netdev = dt_get_drvdata ( dt );
+	struct dwmac *dwmac = netdev->priv;
+
+	/* Unregister network device */
+	unregister_netdev ( netdev );
+
+	/* Reset card */
+	dwmac_reset ( dwmac );
+
+	/* Free network device */
+	iounmap ( dwmac->regs );
+	netdev_nullify ( netdev );
+	netdev_put ( netdev );
+}
+
+/** DesignWare MAC compatible model identifiers */
+static const char * dwmac_ids[] = {
+	"thead,light-dwmac",
+	"snps,dwmac",
+};
+
+/** DesignWare MAC devicetree driver */
+struct dt_driver dwmac_driver __dt_driver = {
+	.name = "dwmac",
+	.ids = dwmac_ids,
+	.id_count = ( sizeof ( dwmac_ids ) / sizeof ( dwmac_ids[0] ) ),
+	.probe = dwmac_probe,
+	.remove = dwmac_remove,
+};