lan743x: Add main source files for new lan743x driver

Add main source files for new lan743x driver

Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 3391 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/Kconfig b/drivers/net/ethernet/microchip/Kconfig
index 36a09d94b368..71dca8bd51ac 100644
--- a/drivers/net/ethernet/microchip/Kconfig
+++ b/drivers/net/ethernet/microchip/Kconfig
@@ -42,4 +42,14 @@ config ENCX24J600
       To compile this driver as a module, choose M here. The module will be
       called encx24j600.
 
+config LAN743X
+	tristate "LAN743x support"
+	depends on PCI
+	select PHYLIB
+	---help---
+	  Support for the Microchip LAN743x PCI Express Gigabit Ethernet chip
+
+	  To compile this driver as a module, choose M here. The module will be
+	  called lan743x.
+
 endif # NET_VENDOR_MICROCHIP
diff --git a/drivers/net/ethernet/microchip/Makefile b/drivers/net/ethernet/microchip/Makefile
index ff78f621b59a..2e982cc249fb 100644
--- a/drivers/net/ethernet/microchip/Makefile
+++ b/drivers/net/ethernet/microchip/Makefile
@@ -4,3 +4,6 @@
 
 obj-$(CONFIG_ENC28J60) += enc28j60.o
 obj-$(CONFIG_ENCX24J600) += encx24j600.o encx24j600-regmap.o
+obj-$(CONFIG_LAN743X) += lan743x.o
+
+lan743x-objs := lan743x_main.o
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
new file mode 100644
index 000000000000..04022ec5ae1e
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -0,0 +1,2781 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2018 Microchip Technology Inc. */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/crc32.h>
+#include <linux/microchipphy.h>
+#include <linux/net_tstamp.h>
+#include <linux/phy.h>
+#include <linux/rtnetlink.h>
+#include <linux/iopoll.h>
+#include "lan743x_main.h"
+
+static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
+{
+	pci_release_selected_regions(adapter->pdev,
+				     pci_select_bars(adapter->pdev,
+						     IORESOURCE_MEM));
+	pci_disable_device(adapter->pdev);
+}
+
+static int lan743x_pci_init(struct lan743x_adapter *adapter,
+			    struct pci_dev *pdev)
+{
+	unsigned long bars = 0;
+	int ret;
+
+	adapter->pdev = pdev;
+	ret = pci_enable_device_mem(pdev);
+	if (ret)
+		goto return_error;
+
+	netif_info(adapter, probe, adapter->netdev,
+		   "PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
+		   pdev->vendor, pdev->device);
+	bars = pci_select_bars(pdev, IORESOURCE_MEM);
+	if (!test_bit(0, &bars))
+		goto disable_device;
+
+	ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
+	if (ret)
+		goto disable_device;
+
+	pci_set_master(pdev);
+	return 0;
+
+disable_device:
+	pci_disable_device(adapter->pdev);
+
+return_error:
+	return ret;
+}
+
+u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
+{
+	return ioread32(&adapter->csr.csr_address[offset]);
+}
+
+void lan743x_csr_write(struct lan743x_adapter *adapter, int offset, u32 data)
+{
+	iowrite32(data, &adapter->csr.csr_address[offset]);
+}
+
+#define LAN743X_CSR_READ_OP(offset)	lan743x_csr_read(adapter, offset)
+
+static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
+{
+	u32 data;
+
+	data = lan743x_csr_read(adapter, HW_CFG);
+	data |= HW_CFG_LRST_;
+	lan743x_csr_write(adapter, HW_CFG, data);
+
+	return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
+				  !(data & HW_CFG_LRST_), 100000, 10000000);
+}
+
+static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
+				    int offset, u32 bit_mask,
+				    int target_value, int usleep_min,
+				    int usleep_max, int count)
+{
+	u32 data;
+
+	return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
+				  target_value == ((data & bit_mask) ? 1 : 0),
+				  usleep_max, usleep_min * count);
+}
+
+static int lan743x_csr_init(struct lan743x_adapter *adapter)
+{
+	struct lan743x_csr *csr = &adapter->csr;
+	resource_size_t bar_start, bar_length;
+	int result;
+
+	bar_start = pci_resource_start(adapter->pdev, 0);
+	bar_length = pci_resource_len(adapter->pdev, 0);
+	csr->csr_address = devm_ioremap(&adapter->pdev->dev,
+					bar_start, bar_length);
+	if (!csr->csr_address) {
+		result = -ENOMEM;
+		goto clean_up;
+	}
+
+	csr->id_rev = lan743x_csr_read(adapter, ID_REV);
+	csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
+	netif_info(adapter, probe, adapter->netdev,
+		   "ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
+		   csr->id_rev,	FPGA_REV_GET_MAJOR_(csr->fpga_rev),
+		   FPGA_REV_GET_MINOR_(csr->fpga_rev));
+	if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
+		result = -ENODEV;
+		goto clean_up;
+	}
+
+	csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
+	switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
+	case ID_REV_CHIP_REV_A0_:
+		csr->flags |= LAN743X_CSR_FLAG_IS_A0;
+		csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
+		break;
+	case ID_REV_CHIP_REV_B0_:
+		csr->flags |= LAN743X_CSR_FLAG_IS_B0;
+		break;
+	}
+
+	result = lan743x_csr_light_reset(adapter);
+	if (result)
+		goto clean_up;
+	return 0;
+clean_up:
+	return result;
+}
+
+static void lan743x_intr_software_isr(void *context)
+{
+	struct lan743x_adapter *adapter = context;
+	struct lan743x_intr *intr = &adapter->intr;
+	u32 int_sts;
+
+	int_sts = lan743x_csr_read(adapter, INT_STS);
+	if (int_sts & INT_BIT_SW_GP_) {
+		lan743x_csr_write(adapter, INT_STS, INT_BIT_SW_GP_);
+		intr->software_isr_flag = 1;
+	}
+}
+
+static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
+{
+	struct lan743x_tx *tx = context;
+	struct lan743x_adapter *adapter = tx->adapter;
+	bool enable_flag = true;
+	u32 int_en = 0;
+
+	int_en = lan743x_csr_read(adapter, INT_EN_SET);
+	if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
+		lan743x_csr_write(adapter, INT_EN_CLR,
+				  INT_BIT_DMA_TX_(tx->channel_number));
+	}
+
+	if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
+		u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
+		u32 dmac_int_sts;
+		u32 dmac_int_en;
+
+		if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
+			dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
+		else
+			dmac_int_sts = ioc_bit;
+		if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
+			dmac_int_en = lan743x_csr_read(adapter,
+						       DMAC_INT_EN_SET);
+		else
+			dmac_int_en = ioc_bit;
+
+		dmac_int_en &= ioc_bit;
+		dmac_int_sts &= dmac_int_en;
+		if (dmac_int_sts & ioc_bit) {
+			napi_schedule(&tx->napi);
+			enable_flag = false;/* poll func will enable later */
+		}
+	}
+
+	if (enable_flag)
+		/* enable isr */
+		lan743x_csr_write(adapter, INT_EN_SET,
+				  INT_BIT_DMA_TX_(tx->channel_number));
+}
+
+static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
+{
+	struct lan743x_rx *rx = context;
+	struct lan743x_adapter *adapter = rx->adapter;
+	bool enable_flag = true;
+
+	if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
+		lan743x_csr_write(adapter, INT_EN_CLR,
+				  INT_BIT_DMA_RX_(rx->channel_number));
+	}
+
+	if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
+		u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
+		u32 dmac_int_sts;
+		u32 dmac_int_en;
+
+		if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
+			dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
+		else
+			dmac_int_sts = rx_frame_bit;
+		if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
+			dmac_int_en = lan743x_csr_read(adapter,
+						       DMAC_INT_EN_SET);
+		else
+			dmac_int_en = rx_frame_bit;
+
+		dmac_int_en &= rx_frame_bit;
+		dmac_int_sts &= dmac_int_en;
+		if (dmac_int_sts & rx_frame_bit) {
+			napi_schedule(&rx->napi);
+			enable_flag = false;/* poll funct will enable later */
+		}
+	}
+
+	if (enable_flag) {
+		/* enable isr */
+		lan743x_csr_write(adapter, INT_EN_SET,
+				  INT_BIT_DMA_RX_(rx->channel_number));
+	}
+}
+
+static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
+{
+	struct lan743x_adapter *adapter = context;
+	unsigned int channel;
+
+	if (int_sts & INT_BIT_ALL_RX_) {
+		for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
+			channel++) {
+			u32 int_bit = INT_BIT_DMA_RX_(channel);
+
+			if (int_sts & int_bit) {
+				lan743x_rx_isr(&adapter->rx[channel],
+					       int_bit, flags);
+				int_sts &= ~int_bit;
+			}
+		}
+	}
+	if (int_sts & INT_BIT_ALL_TX_) {
+		for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
+			channel++) {
+			u32 int_bit = INT_BIT_DMA_TX_(channel);
+
+			if (int_sts & int_bit) {
+				lan743x_tx_isr(&adapter->tx[channel],
+					       int_bit, flags);
+				int_sts &= ~int_bit;
+			}
+		}
+	}
+	if (int_sts & INT_BIT_ALL_OTHER_) {
+		if (int_sts & INT_BIT_SW_GP_) {
+			lan743x_intr_software_isr(adapter);
+			int_sts &= ~INT_BIT_SW_GP_;
+		}
+	}
+	if (int_sts)
+		lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
+}
+
+static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
+{
+	struct lan743x_vector *vector = ptr;
+	struct lan743x_adapter *adapter = vector->adapter;
+	irqreturn_t result = IRQ_NONE;
+	u32 int_enables;
+	u32 int_sts;
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
+		int_sts = lan743x_csr_read(adapter, INT_STS);
+	} else if (vector->flags &
+		   (LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
+		   LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
+		int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
+	} else {
+		/* use mask as implied status */
+		int_sts = vector->int_mask | INT_BIT_MAS_;
+	}
+
+	if (!(int_sts & INT_BIT_MAS_))
+		goto irq_done;
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
+		/* disable vector interrupt */
+		lan743x_csr_write(adapter,
+				  INT_VEC_EN_CLR,
+				  INT_VEC_EN_(vector->vector_index));
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
+		/* disable master interrupt */
+		lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
+		int_enables = lan743x_csr_read(adapter, INT_EN_SET);
+	} else {
+		/*  use vector mask as implied enable mask */
+		int_enables = vector->int_mask;
+	}
+
+	int_sts &= int_enables;
+	int_sts &= vector->int_mask;
+	if (int_sts) {
+		if (vector->handler) {
+			vector->handler(vector->context,
+					int_sts, vector->flags);
+		} else {
+			/* disable interrupts on this vector */
+			lan743x_csr_write(adapter, INT_EN_CLR,
+					  vector->int_mask);
+		}
+		result = IRQ_HANDLED;
+	}
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
+		/* enable master interrupt */
+		lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
+
+	if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
+		/* enable vector interrupt */
+		lan743x_csr_write(adapter,
+				  INT_VEC_EN_SET,
+				  INT_VEC_EN_(vector->vector_index));
+irq_done:
+	return result;
+}
+
+static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
+{
+	struct lan743x_intr *intr = &adapter->intr;
+	int result = -ENODEV;
+	int timeout = 10;
+
+	intr->software_isr_flag = 0;
+
+	/* enable interrupt */
+	lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
+
+	/* activate interrupt here */
+	lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
+	while ((timeout > 0) && (!(intr->software_isr_flag))) {
+		usleep_range(1000, 20000);
+		timeout--;
+	}
+
+	if (intr->software_isr_flag)
+		result = 0;
+
+	/* disable interrupts */
+	lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
+	return result;
+}
+
+static int lan743x_intr_register_isr(struct lan743x_adapter *adapter,
+				     int vector_index, u32 flags,
+				     u32 int_mask,
+				     lan743x_vector_handler handler,
+				     void *context)
+{
+	struct lan743x_vector *vector = &adapter->intr.vector_list
+					[vector_index];
+	int ret;
+
+	vector->adapter = adapter;
+	vector->flags = flags;
+	vector->vector_index = vector_index;
+	vector->int_mask = int_mask;
+	vector->handler = handler;
+	vector->context = context;
+
+	ret = request_irq(vector->irq,
+			  lan743x_intr_entry_isr,
+			  (flags & LAN743X_VECTOR_FLAG_IRQ_SHARED) ?
+			  IRQF_SHARED : 0, DRIVER_NAME, vector);
+	if (ret) {
+		vector->handler = NULL;
+		vector->context = NULL;
+		vector->int_mask = 0;
+		vector->flags = 0;
+	}
+	return ret;
+}
+
+static void lan743x_intr_unregister_isr(struct lan743x_adapter *adapter,
+					int vector_index)
+{
+	struct lan743x_vector *vector = &adapter->intr.vector_list
+					[vector_index];
+
+	free_irq(vector->irq, vector);
+	vector->handler = NULL;
+	vector->context = NULL;
+	vector->int_mask = 0;
+	vector->flags = 0;
+}
+
+static u32 lan743x_intr_get_vector_flags(struct lan743x_adapter *adapter,
+					 u32 int_mask)
+{
+	int index;
+
+	for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
+		if (adapter->intr.vector_list[index].int_mask & int_mask)
+			return adapter->intr.vector_list[index].flags;
+	}
+	return 0;
+}
+
+static void lan743x_intr_close(struct lan743x_adapter *adapter)
+{
+	struct lan743x_intr *intr = &adapter->intr;
+	int index = 0;
+
+	lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
+	lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
+
+	for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++) {
+		if (intr->flags & INTR_FLAG_IRQ_REQUESTED(index)) {
+			lan743x_intr_unregister_isr(adapter, index);
+			intr->flags &= ~INTR_FLAG_IRQ_REQUESTED(index);
+		}
+	}
+
+	if (intr->flags & INTR_FLAG_MSI_ENABLED) {
+		pci_disable_msi(adapter->pdev);
+		intr->flags &= ~INTR_FLAG_MSI_ENABLED;
+	}
+
+	if (intr->flags & INTR_FLAG_MSIX_ENABLED) {
+		pci_disable_msix(adapter->pdev);
+		intr->flags &= ~INTR_FLAG_MSIX_ENABLED;
+	}
+}
+
+static int lan743x_intr_open(struct lan743x_adapter *adapter)
+{
+	struct msix_entry msix_entries[LAN743X_MAX_VECTOR_COUNT];
+	struct lan743x_intr *intr = &adapter->intr;
+	u32 int_vec_en_auto_clr = 0;
+	u32 int_vec_map0 = 0;
+	u32 int_vec_map1 = 0;
+	int ret = -ENODEV;
+	int index = 0;
+	u32 flags = 0;
+
+	intr->number_of_vectors = 0;
+
+	/* Try to set up MSIX interrupts */
+	memset(&msix_entries[0], 0,
+	       sizeof(struct msix_entry) * LAN743X_MAX_VECTOR_COUNT);
+	for (index = 0; index < LAN743X_MAX_VECTOR_COUNT; index++)
+		msix_entries[index].entry = index;
+	ret = pci_enable_msix_range(adapter->pdev,
+				    msix_entries, 1,
+				    1 + LAN743X_USED_TX_CHANNELS +
+				    LAN743X_USED_RX_CHANNELS);
+
+	if (ret > 0) {
+		intr->flags |= INTR_FLAG_MSIX_ENABLED;
+		intr->number_of_vectors = ret;
+		intr->using_vectors = true;
+		for (index = 0; index < intr->number_of_vectors; index++)
+			intr->vector_list[index].irq = msix_entries
+						       [index].vector;
+		netif_info(adapter, ifup, adapter->netdev,
+			   "using MSIX interrupts, number of vectors = %d\n",
+			   intr->number_of_vectors);
+	}
+
+	/* If MSIX failed try to setup using MSI interrupts */
+	if (!intr->number_of_vectors) {
+		if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
+			if (!pci_enable_msi(adapter->pdev)) {
+				intr->flags |= INTR_FLAG_MSI_ENABLED;
+				intr->number_of_vectors = 1;
+				intr->using_vectors = true;
+				intr->vector_list[0].irq =
+					adapter->pdev->irq;
+				netif_info(adapter, ifup, adapter->netdev,
+					   "using MSI interrupts, number of vectors = %d\n",
+					   intr->number_of_vectors);
+			}
+		}
+	}
+
+	/* If MSIX, and MSI failed, setup using legacy interrupt */
+	if (!intr->number_of_vectors) {
+		intr->number_of_vectors = 1;
+		intr->using_vectors = false;
+		intr->vector_list[0].irq = intr->irq;
+		netif_info(adapter, ifup, adapter->netdev,
+			   "using legacy interrupts\n");
+	}
+
+	/* At this point we must have at least one irq */
+	lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0xFFFFFFFF);
+
+	/* map all interrupts to vector 0 */
+	lan743x_csr_write(adapter, INT_VEC_MAP0, 0x00000000);
+	lan743x_csr_write(adapter, INT_VEC_MAP1, 0x00000000);
+	lan743x_csr_write(adapter, INT_VEC_MAP2, 0x00000000);
+	flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
+		LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
+		LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
+		LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
+
+	if (intr->using_vectors) {
+		flags |= LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
+			 LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
+	} else {
+		flags |= LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR |
+			 LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET |
+			 LAN743X_VECTOR_FLAG_IRQ_SHARED;
+	}
+
+	if (adapter->csr.flags & LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
+		flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ;
+		flags &= ~LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C;
+		flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR;
+		flags &= ~LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK;
+		flags |= LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C;
+		flags |= LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C;
+	}
+
+	ret = lan743x_intr_register_isr(adapter, 0, flags,
+					INT_BIT_ALL_RX_ | INT_BIT_ALL_TX_ |
+					INT_BIT_ALL_OTHER_,
+					lan743x_intr_shared_isr, adapter);
+	if (ret)
+		goto clean_up;
+	intr->flags |= INTR_FLAG_IRQ_REQUESTED(0);
+
+	if (intr->using_vectors)
+		lan743x_csr_write(adapter, INT_VEC_EN_SET,
+				  INT_VEC_EN_(0));
+
+	if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
+		lan743x_csr_write(adapter, INT_MOD_CFG0, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG1, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG2, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG3, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG4, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG5, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG6, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_CFG7, LAN743X_INT_MOD);
+		lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00005432);
+		lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00000001);
+		lan743x_csr_write(adapter, INT_MOD_MAP2, 0x00FFFFFF);
+	}
+
+	/* enable interrupts */
+	lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
+	ret = lan743x_intr_test_isr(adapter);
+	if (ret)
+		goto clean_up;
+
+	if (intr->number_of_vectors > 1) {
+		int number_of_tx_vectors = intr->number_of_vectors - 1;
+
+		if (number_of_tx_vectors > LAN743X_USED_TX_CHANNELS)
+			number_of_tx_vectors = LAN743X_USED_TX_CHANNELS;
+		flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
+			LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
+			LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
+			LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
+			LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
+			LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
+
+		if (adapter->csr.flags &
+		   LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
+			flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
+				LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
+				LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
+				LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
+				LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
+		}
+
+		for (index = 0; index < number_of_tx_vectors; index++) {
+			u32 int_bit = INT_BIT_DMA_TX_(index);
+			int vector = index + 1;
+
+			/* map TX interrupt to vector */
+			int_vec_map1 |= INT_VEC_MAP1_TX_VEC_(index, vector);
+			lan743x_csr_write(adapter, INT_VEC_MAP1, int_vec_map1);
+			if (flags &
+			    LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
+				int_vec_en_auto_clr |= INT_VEC_EN_(vector);
+				lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
+						  int_vec_en_auto_clr);
+			}
+
+			/* Remove TX interrupt from shared mask */
+			intr->vector_list[0].int_mask &= ~int_bit;
+			ret = lan743x_intr_register_isr(adapter, vector, flags,
+							int_bit, lan743x_tx_isr,
+							&adapter->tx[index]);
+			if (ret)
+				goto clean_up;
+			intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
+			if (!(flags &
+			    LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET))
+				lan743x_csr_write(adapter, INT_VEC_EN_SET,
+						  INT_VEC_EN_(vector));
+		}
+	}
+	if ((intr->number_of_vectors - LAN743X_USED_TX_CHANNELS) > 1) {
+		int number_of_rx_vectors = intr->number_of_vectors -
+					   LAN743X_USED_TX_CHANNELS - 1;
+
+		if (number_of_rx_vectors > LAN743X_USED_RX_CHANNELS)
+			number_of_rx_vectors = LAN743X_USED_RX_CHANNELS;
+
+		flags = LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ |
+			LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C |
+			LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK |
+			LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR |
+			LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR |
+			LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET;
+
+		if (adapter->csr.flags &
+		    LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR) {
+			flags = LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR |
+				LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET |
+				LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET |
+				LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR |
+				LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR;
+		}
+		for (index = 0; index < number_of_rx_vectors; index++) {
+			int vector = index + 1 + LAN743X_USED_TX_CHANNELS;
+			u32 int_bit = INT_BIT_DMA_RX_(index);
+
+			/* map RX interrupt to vector */
+			int_vec_map0 |= INT_VEC_MAP0_RX_VEC_(index, vector);
+			lan743x_csr_write(adapter, INT_VEC_MAP0, int_vec_map0);
+			if (flags &
+			    LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_CLEAR) {
+				int_vec_en_auto_clr |= INT_VEC_EN_(vector);
+				lan743x_csr_write(adapter, INT_VEC_EN_AUTO_CLR,
+						  int_vec_en_auto_clr);
+			}
+
+			/* Remove RX interrupt from shared mask */
+			intr->vector_list[0].int_mask &= ~int_bit;
+			ret = lan743x_intr_register_isr(adapter, vector, flags,
+							int_bit, lan743x_rx_isr,
+							&adapter->rx[index]);
+			if (ret)
+				goto clean_up;
+			intr->flags |= INTR_FLAG_IRQ_REQUESTED(vector);
+
+			lan743x_csr_write(adapter, INT_VEC_EN_SET,
+					  INT_VEC_EN_(vector));
+		}
+	}
+	return 0;
+
+clean_up:
+	lan743x_intr_close(adapter);
+	return ret;
+}
+
+static int lan743x_dp_write(struct lan743x_adapter *adapter,
+			    u32 select, u32 addr, u32 length, u32 *buf)
+{
+	int ret = -EIO;
+	u32 dp_sel;
+	int i;
+
+	mutex_lock(&adapter->dp_lock);
+	if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
+				     1, 40, 100, 100))
+		goto unlock;
+	dp_sel = lan743x_csr_read(adapter, DP_SEL);
+	dp_sel &= ~DP_SEL_MASK_;
+	dp_sel |= select;
+	lan743x_csr_write(adapter, DP_SEL, dp_sel);
+
+	for (i = 0; i < length; i++) {
+		lan743x_csr_write(adapter, DP_ADDR, addr + i);
+		lan743x_csr_write(adapter, DP_DATA_0, buf[i]);
+		lan743x_csr_write(adapter, DP_CMD, DP_CMD_WRITE_);
+		if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
+					     1, 40, 100, 100))
+			goto unlock;
+	}
+	ret = 0;
+
+unlock:
+	mutex_unlock(&adapter->dp_lock);
+	return ret;
+}
+
+static u32 lan743x_mac_mii_access(u16 id, u16 index, int read)
+{
+	u32 ret;
+
+	ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
+		MAC_MII_ACC_PHY_ADDR_MASK_;
+	ret |= (index << MAC_MII_ACC_MIIRINDA_SHIFT_) &
+		MAC_MII_ACC_MIIRINDA_MASK_;
+
+	if (read)
+		ret |= MAC_MII_ACC_MII_READ_;
+	else
+		ret |= MAC_MII_ACC_MII_WRITE_;
+	ret |= MAC_MII_ACC_MII_BUSY_;
+
+	return ret;
+}
+
+static int lan743x_mac_mii_wait_till_not_busy(struct lan743x_adapter *adapter)
+{
+	u32 data;
+
+	return readx_poll_timeout(LAN743X_CSR_READ_OP, MAC_MII_ACC, data,
+				  !(data & MAC_MII_ACC_MII_BUSY_), 0, 1000000);
+}
+
+static int lan743x_mdiobus_read(struct mii_bus *bus, int phy_id, int index)
+{
+	struct lan743x_adapter *adapter = bus->priv;
+	u32 val, mii_access;
+	int ret;
+
+	/* comfirm MII not busy */
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+
+	/* set the address, index & direction (read from PHY) */
+	mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_READ);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+
+	val = lan743x_csr_read(adapter, MAC_MII_DATA);
+	return (int)(val & 0xFFFF);
+}
+
+static int lan743x_mdiobus_write(struct mii_bus *bus,
+				 int phy_id, int index, u16 regval)
+{
+	struct lan743x_adapter *adapter = bus->priv;
+	u32 val, mii_access;
+	int ret;
+
+	/* confirm MII not busy */
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	if (ret < 0)
+		return ret;
+	val = (u32)regval;
+	lan743x_csr_write(adapter, MAC_MII_DATA, val);
+
+	/* set the address, index & direction (write to PHY) */
+	mii_access = lan743x_mac_mii_access(phy_id, index, MAC_MII_WRITE);
+	lan743x_csr_write(adapter, MAC_MII_ACC, mii_access);
+	ret = lan743x_mac_mii_wait_till_not_busy(adapter);
+	return ret;
+}
+
+static void lan743x_mac_set_address(struct lan743x_adapter *adapter,
+				    u8 *addr)
+{
+	u32 addr_lo, addr_hi;
+
+	addr_lo = addr[0] |
+		addr[1] << 8 |
+		addr[2] << 16 |
+		addr[3] << 24;
+	addr_hi = addr[4] |
+		addr[5] << 8;
+	lan743x_csr_write(adapter, MAC_RX_ADDRL, addr_lo);
+	lan743x_csr_write(adapter, MAC_RX_ADDRH, addr_hi);
+
+	ether_addr_copy(adapter->mac_address, addr);
+	netif_info(adapter, drv, adapter->netdev,
+		   "MAC address set to %pM\n", addr);
+}
+
+static int lan743x_mac_init(struct lan743x_adapter *adapter)
+{
+	bool mac_address_valid = true;
+	struct net_device *netdev;
+	u32 mac_addr_hi = 0;
+	u32 mac_addr_lo = 0;
+	u32 data;
+	int ret;
+
+	netdev = adapter->netdev;
+	lan743x_csr_write(adapter, MAC_CR, MAC_CR_RST_);
+	ret = lan743x_csr_wait_for_bit(adapter, MAC_CR, MAC_CR_RST_,
+				       0, 1000, 20000, 100);
+	if (ret)
+		return ret;
+
+	/* setup auto duplex, and speed detection */
+	data = lan743x_csr_read(adapter, MAC_CR);
+	data |= MAC_CR_ADD_ | MAC_CR_ASD_;
+	data |= MAC_CR_CNTR_RST_;
+	lan743x_csr_write(adapter, MAC_CR, data);
+
+	mac_addr_hi = lan743x_csr_read(adapter, MAC_RX_ADDRH);
+	mac_addr_lo = lan743x_csr_read(adapter, MAC_RX_ADDRL);
+	adapter->mac_address[0] = mac_addr_lo & 0xFF;
+	adapter->mac_address[1] = (mac_addr_lo >> 8) & 0xFF;
+	adapter->mac_address[2] = (mac_addr_lo >> 16) & 0xFF;
+	adapter->mac_address[3] = (mac_addr_lo >> 24) & 0xFF;
+	adapter->mac_address[4] = mac_addr_hi & 0xFF;
+	adapter->mac_address[5] = (mac_addr_hi >> 8) & 0xFF;
+
+	if (((mac_addr_hi & 0x0000FFFF) == 0x0000FFFF) &&
+	    mac_addr_lo == 0xFFFFFFFF) {
+		mac_address_valid = false;
+	} else if (!is_valid_ether_addr(adapter->mac_address)) {
+		mac_address_valid = false;
+	}
+
+	if (!mac_address_valid)
+		random_ether_addr(adapter->mac_address);
+	lan743x_mac_set_address(adapter, adapter->mac_address);
+	ether_addr_copy(netdev->dev_addr, adapter->mac_address);
+	return 0;
+}
+
+static int lan743x_mac_open(struct lan743x_adapter *adapter)
+{
+	int ret = 0;
+	u32 temp;
+
+	temp = lan743x_csr_read(adapter, MAC_RX);
+	lan743x_csr_write(adapter, MAC_RX, temp | MAC_RX_RXEN_);
+	temp = lan743x_csr_read(adapter, MAC_TX);
+	lan743x_csr_write(adapter, MAC_TX, temp | MAC_TX_TXEN_);
+	return ret;
+}
+
+static void lan743x_mac_close(struct lan743x_adapter *adapter)
+{
+	u32 temp;
+
+	temp = lan743x_csr_read(adapter, MAC_TX);
+	temp &= ~MAC_TX_TXEN_;
+	lan743x_csr_write(adapter, MAC_TX, temp);
+	lan743x_csr_wait_for_bit(adapter, MAC_TX, MAC_TX_TXD_,
+				 1, 1000, 20000, 100);
+
+	temp = lan743x_csr_read(adapter, MAC_RX);
+	temp &= ~MAC_RX_RXEN_;
+	lan743x_csr_write(adapter, MAC_RX, temp);
+	lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
+				 1, 1000, 20000, 100);
+}
+
+static void lan743x_mac_flow_ctrl_set_enables(struct lan743x_adapter *adapter,
+					      bool tx_enable, bool rx_enable)
+{
+	u32 flow_setting = 0;
+
+	/* set maximum pause time because when fifo space frees
+	 * up a zero value pause frame will be sent to release the pause
+	 */
+	flow_setting = MAC_FLOW_CR_FCPT_MASK_;
+	if (tx_enable)
+		flow_setting |= MAC_FLOW_CR_TX_FCEN_;
+	if (rx_enable)
+		flow_setting |= MAC_FLOW_CR_RX_FCEN_;
+	lan743x_csr_write(adapter, MAC_FLOW, flow_setting);
+}
+
+static int lan743x_mac_set_mtu(struct lan743x_adapter *adapter, int new_mtu)
+{
+	int enabled = 0;
+	u32 mac_rx = 0;
+
+	mac_rx = lan743x_csr_read(adapter, MAC_RX);
+	if (mac_rx & MAC_RX_RXEN_) {
+		enabled = 1;
+		if (mac_rx & MAC_RX_RXD_) {
+			lan743x_csr_write(adapter, MAC_RX, mac_rx);
+			mac_rx &= ~MAC_RX_RXD_;
+		}
+		mac_rx &= ~MAC_RX_RXEN_;
+		lan743x_csr_write(adapter, MAC_RX, mac_rx);
+		lan743x_csr_wait_for_bit(adapter, MAC_RX, MAC_RX_RXD_,
+					 1, 1000, 20000, 100);
+		lan743x_csr_write(adapter, MAC_RX, mac_rx | MAC_RX_RXD_);
+	}
+
+	mac_rx &= ~(MAC_RX_MAX_SIZE_MASK_);
+	mac_rx |= (((new_mtu + ETH_HLEN + 4) << MAC_RX_MAX_SIZE_SHIFT_) &
+		  MAC_RX_MAX_SIZE_MASK_);
+	lan743x_csr_write(adapter, MAC_RX, mac_rx);
+
+	if (enabled) {
+		mac_rx |= MAC_RX_RXEN_;
+		lan743x_csr_write(adapter, MAC_RX, mac_rx);
+	}
+	return 0;
+}
+
+/* PHY */
+static int lan743x_phy_reset(struct lan743x_adapter *adapter)
+{
+	u32 data;
+
+	/* Only called with in probe, and before mdiobus_register */
+
+	data = lan743x_csr_read(adapter, PMT_CTL);
+	data |= PMT_CTL_ETH_PHY_RST_;
+	lan743x_csr_write(adapter, PMT_CTL, data);
+
+	return readx_poll_timeout(LAN743X_CSR_READ_OP, PMT_CTL, data,
+				  (!(data & PMT_CTL_ETH_PHY_RST_) &&
+				  (data & PMT_CTL_READY_)),
+				  50000, 1000000);
+}
+
+static void lan743x_phy_update_flowcontrol(struct lan743x_adapter *adapter,
+					   u8 duplex, u16 local_adv,
+					   u16 remote_adv)
+{
+	struct lan743x_phy *phy = &adapter->phy;
+	u8 cap;
+
+	if (phy->fc_autoneg)
+		cap = mii_resolve_flowctrl_fdx(local_adv, remote_adv);
+	else
+		cap = phy->fc_request_control;
+
+	lan743x_mac_flow_ctrl_set_enables(adapter,
+					  cap & FLOW_CTRL_TX,
+					  cap & FLOW_CTRL_RX);
+}
+
+static int lan743x_phy_init(struct lan743x_adapter *adapter)
+{
+	struct net_device *netdev;
+	int ret;
+
+	netdev = adapter->netdev;
+	ret = lan743x_phy_reset(adapter);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static void lan743x_phy_link_status_change(struct net_device *netdev)
+{
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
+	struct phy_device *phydev = netdev->phydev;
+
+	phy_print_status(phydev);
+	if (phydev->state == PHY_RUNNING) {
+		struct ethtool_link_ksettings ksettings;
+		struct lan743x_phy *phy = NULL;
+		int remote_advertisement = 0;
+		int local_advertisement = 0;
+
+		phy = &adapter->phy;
+		memset(&ksettings, 0, sizeof(ksettings));
+		phy_ethtool_get_link_ksettings(netdev, &ksettings);
+		local_advertisement = phy_read(phydev, MII_ADVERTISE);
+		if (local_advertisement < 0)
+			return;
+
+		remote_advertisement = phy_read(phydev, MII_LPA);
+		if (remote_advertisement < 0)
+			return;
+
+		lan743x_phy_update_flowcontrol(adapter,
+					       ksettings.base.duplex,
+					       local_advertisement,
+					       remote_advertisement);
+	}
+}
+
+static void lan743x_phy_close(struct lan743x_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	phy_stop(netdev->phydev);
+	phy_disconnect(netdev->phydev);
+	netdev->phydev = NULL;
+}
+
+static int lan743x_phy_open(struct lan743x_adapter *adapter)
+{
+	struct lan743x_phy *phy = &adapter->phy;
+	struct phy_device *phydev;
+	struct net_device *netdev;
+	int ret = -EIO;
+	u32 mii_adv;
+
+	netdev = adapter->netdev;
+	phydev = phy_find_first(adapter->mdiobus);
+	if (!phydev)
+		goto return_error;
+
+	ret = phy_connect_direct(netdev, phydev,
+				 lan743x_phy_link_status_change,
+				 PHY_INTERFACE_MODE_GMII);
+	if (ret)
+		goto return_error;
+
+	/* MAC doesn't support 1000T Half */
+	phydev->supported &= ~SUPPORTED_1000baseT_Half;
+
+	/* support both flow controls */
+	phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
+	phydev->advertising &= ~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
+	mii_adv = (u32)mii_advertise_flowctrl(phy->fc_request_control);
+	phydev->advertising |= mii_adv_to_ethtool_adv_t(mii_adv);
+	phy->fc_autoneg = phydev->autoneg;
+
+	phy_start(phydev);
+	phy_start_aneg(phydev);
+	return 0;
+
+return_error:
+	return ret;
+}
+
+static void lan743x_rfe_update_mac_address(struct lan743x_adapter *adapter)
+{
+	u8 *mac_addr;
+	u32 mac_addr_hi = 0;
+	u32 mac_addr_lo = 0;
+
+	/* Add mac address to perfect Filter */
+	mac_addr = adapter->mac_address;
+	mac_addr_lo = ((((u32)(mac_addr[0])) << 0) |
+		      (((u32)(mac_addr[1])) << 8) |
+		      (((u32)(mac_addr[2])) << 16) |
+		      (((u32)(mac_addr[3])) << 24));
+	mac_addr_hi = ((((u32)(mac_addr[4])) << 0) |
+		      (((u32)(mac_addr[5])) << 8));
+
+	lan743x_csr_write(adapter, RFE_ADDR_FILT_LO(0), mac_addr_lo);
+	lan743x_csr_write(adapter, RFE_ADDR_FILT_HI(0),
+			  mac_addr_hi | RFE_ADDR_FILT_HI_VALID_);
+}
+
+static void lan743x_rfe_set_multicast(struct lan743x_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	u32 hash_table[DP_SEL_VHF_HASH_LEN];
+	u32 rfctl;
+	u32 data;
+
+	rfctl = lan743x_csr_read(adapter, RFE_CTL);
+	rfctl &= ~(RFE_CTL_AU_ | RFE_CTL_AM_ |
+		 RFE_CTL_DA_PERFECT_ | RFE_CTL_MCAST_HASH_);
+	rfctl |= RFE_CTL_AB_;
+	if (netdev->flags & IFF