/* SPDX-License-Identifier: GPL-2.0+ */
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/* Copyright (C) 2018 Microchip Technology Inc. */
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/crc32.h>
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#include <linux/microchipphy.h>
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#include <linux/net_tstamp.h>
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#include <linux/of_mdio.h>
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#include <linux/of_net.h>
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#include <linux/phy.h>
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#include <linux/phy_fixed.h>
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#include <linux/rtnetlink.h>
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#include <linux/iopoll.h>
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#include <linux/crc16.h>
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#include "lan743x_main.h"
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#include "lan743x_ethtool.h"
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static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
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{
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pci_release_selected_regions(adapter->pdev,
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pci_select_bars(adapter->pdev,
|
IORESOURCE_MEM));
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pci_disable_device(adapter->pdev);
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}
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static int lan743x_pci_init(struct lan743x_adapter *adapter,
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struct pci_dev *pdev)
|
{
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unsigned long bars = 0;
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int ret;
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adapter->pdev = pdev;
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ret = pci_enable_device_mem(pdev);
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if (ret)
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goto return_error;
|
|
netif_info(adapter, probe, adapter->netdev,
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"PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
|
pdev->vendor, pdev->device);
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bars = pci_select_bars(pdev, IORESOURCE_MEM);
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if (!test_bit(0, &bars))
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goto disable_device;
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ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
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if (ret)
|
goto disable_device;
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|
pci_set_master(pdev);
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return 0;
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|
disable_device:
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pci_disable_device(adapter->pdev);
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return_error:
|
return ret;
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}
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u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
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{
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return ioread32(&adapter->csr.csr_address[offset]);
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}
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void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
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u32 data)
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{
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iowrite32(data, &adapter->csr.csr_address[offset]);
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}
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#define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
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static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
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{
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u32 data;
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data = lan743x_csr_read(adapter, HW_CFG);
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data |= HW_CFG_LRST_;
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lan743x_csr_write(adapter, HW_CFG, data);
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return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
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!(data & HW_CFG_LRST_), 100000, 10000000);
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}
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static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
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int offset, u32 bit_mask,
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int target_value, int usleep_min,
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int usleep_max, int count)
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{
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u32 data;
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return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
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target_value == ((data & bit_mask) ? 1 : 0),
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usleep_max, usleep_min * count);
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}
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static int lan743x_csr_init(struct lan743x_adapter *adapter)
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{
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struct lan743x_csr *csr = &adapter->csr;
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resource_size_t bar_start, bar_length;
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int result;
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bar_start = pci_resource_start(adapter->pdev, 0);
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bar_length = pci_resource_len(adapter->pdev, 0);
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csr->csr_address = devm_ioremap(&adapter->pdev->dev,
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bar_start, bar_length);
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if (!csr->csr_address) {
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result = -ENOMEM;
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goto clean_up;
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}
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csr->id_rev = lan743x_csr_read(adapter, ID_REV);
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csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
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netif_info(adapter, probe, adapter->netdev,
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"ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
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csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
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FPGA_REV_GET_MINOR_(csr->fpga_rev));
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if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
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result = -ENODEV;
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goto clean_up;
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}
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csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
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switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
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case ID_REV_CHIP_REV_A0_:
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csr->flags |= LAN743X_CSR_FLAG_IS_A0;
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csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
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break;
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case ID_REV_CHIP_REV_B0_:
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csr->flags |= LAN743X_CSR_FLAG_IS_B0;
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break;
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}
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result = lan743x_csr_light_reset(adapter);
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if (result)
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goto clean_up;
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return 0;
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clean_up:
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return result;
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}
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static void lan743x_intr_software_isr(void *context)
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{
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struct lan743x_adapter *adapter = context;
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struct lan743x_intr *intr = &adapter->intr;
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u32 int_sts;
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int_sts = lan743x_csr_read(adapter, INT_STS);
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if (int_sts & INT_BIT_SW_GP_) {
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/* disable the interrupt to prevent repeated re-triggering */
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lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
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intr->software_isr_flag = 1;
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}
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}
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static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
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{
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struct lan743x_tx *tx = context;
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struct lan743x_adapter *adapter = tx->adapter;
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bool enable_flag = true;
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lan743x_csr_read(adapter, INT_EN_SET);
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
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lan743x_csr_write(adapter, INT_EN_CLR,
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INT_BIT_DMA_TX_(tx->channel_number));
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}
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if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
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u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
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u32 dmac_int_sts;
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u32 dmac_int_en;
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
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dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
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else
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dmac_int_sts = ioc_bit;
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
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dmac_int_en = lan743x_csr_read(adapter,
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DMAC_INT_EN_SET);
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else
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dmac_int_en = ioc_bit;
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dmac_int_en &= ioc_bit;
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dmac_int_sts &= dmac_int_en;
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if (dmac_int_sts & ioc_bit) {
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napi_schedule(&tx->napi);
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enable_flag = false;/* poll func will enable later */
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}
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}
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if (enable_flag)
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/* enable isr */
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lan743x_csr_write(adapter, INT_EN_SET,
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INT_BIT_DMA_TX_(tx->channel_number));
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}
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static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
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{
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struct lan743x_rx *rx = context;
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struct lan743x_adapter *adapter = rx->adapter;
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bool enable_flag = true;
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
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lan743x_csr_write(adapter, INT_EN_CLR,
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INT_BIT_DMA_RX_(rx->channel_number));
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}
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if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
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u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
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u32 dmac_int_sts;
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u32 dmac_int_en;
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
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dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
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else
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dmac_int_sts = rx_frame_bit;
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if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
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dmac_int_en = lan743x_csr_read(adapter,
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DMAC_INT_EN_SET);
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else
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dmac_int_en = rx_frame_bit;
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dmac_int_en &= rx_frame_bit;
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dmac_int_sts &= dmac_int_en;
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if (dmac_int_sts & rx_frame_bit) {
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napi_schedule(&rx->napi);
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enable_flag = false;/* poll funct will enable later */
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}
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}
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if (enable_flag) {
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/* enable isr */
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lan743x_csr_write(adapter, INT_EN_SET,
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INT_BIT_DMA_RX_(rx->channel_number));
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}
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}
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static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
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{
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struct lan743x_adapter *adapter = context;
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unsigned int channel;
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if (int_sts & INT_BIT_ALL_RX_) {
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for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
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channel++) {
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u32 int_bit = INT_BIT_DMA_RX_(channel);
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if (int_sts & int_bit) {
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lan743x_rx_isr(&adapter->rx[channel],
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int_bit, flags);
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int_sts &= ~int_bit;
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}
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}
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}
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if (int_sts & INT_BIT_ALL_TX_) {
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for (channel = 0; channel < LAN743X_USED_TX_CHANNELS;
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channel++) {
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u32 int_bit = INT_BIT_DMA_TX_(channel);
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if (int_sts & int_bit) {
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lan743x_tx_isr(&adapter->tx[channel],
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int_bit, flags);
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int_sts &= ~int_bit;
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}
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}
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}
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if (int_sts & INT_BIT_ALL_OTHER_) {
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if (int_sts & INT_BIT_SW_GP_) {
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lan743x_intr_software_isr(adapter);
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int_sts &= ~INT_BIT_SW_GP_;
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}
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if (int_sts & INT_BIT_1588_) {
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lan743x_ptp_isr(adapter);
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int_sts &= ~INT_BIT_1588_;
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}
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}
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if (int_sts)
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lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
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}
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static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
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{
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struct lan743x_vector *vector = ptr;
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struct lan743x_adapter *adapter = vector->adapter;
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irqreturn_t result = IRQ_NONE;
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u32 int_enables;
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u32 int_sts;
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if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
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int_sts = lan743x_csr_read(adapter, INT_STS);
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} else if (vector->flags &
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(LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
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LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
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int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
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} else {
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/* use mask as implied status */
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int_sts = vector->int_mask | INT_BIT_MAS_;
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}
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if (!(int_sts & INT_BIT_MAS_))
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goto irq_done;
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if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
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/* disable vector interrupt */
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lan743x_csr_write(adapter,
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INT_VEC_EN_CLR,
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INT_VEC_EN_(vector->vector_index));
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if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
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/* disable master interrupt */
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lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
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if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
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int_enables = lan743x_csr_read(adapter, INT_EN_SET);
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} else {
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/* use vector mask as implied enable mask */
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int_enables = vector->int_mask;
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}
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int_sts &= int_enables;
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int_sts &= vector->int_mask;
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if (int_sts) {
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if (vector->handler) {
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vector->handler(vector->context,
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int_sts, vector->flags);
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} else {
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/* disable interrupts on this vector */
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lan743x_csr_write(adapter, INT_EN_CLR,
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vector->int_mask);
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}
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result = IRQ_HANDLED;
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}
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if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
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/* enable master interrupt */
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lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
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if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
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/* enable vector interrupt */
|
lan743x_csr_write(adapter,
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INT_VEC_EN_SET,
|
INT_VEC_EN_(vector->vector_index));
|
irq_done:
|
return result;
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}
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static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
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{
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struct lan743x_intr *intr = &adapter->intr;
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int result = -ENODEV;
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int timeout = 10;
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intr->software_isr_flag = 0;
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/* enable interrupt */
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lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
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/* activate interrupt here */
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lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
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while ((timeout > 0) && (!(intr->software_isr_flag))) {
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usleep_range(1000, 20000);
|
timeout--;
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}
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if (intr->software_isr_flag)
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result = 0;
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/* disable interrupts */
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lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
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return result;
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}
|
|
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_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);
|
|
/* 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)
|
{
|
u32 dp_sel;
|
int i;
|
|
if (lan743x_csr_wait_for_bit(adapter, DP_SEL, DP_SEL_DPRDY_,
|
1, 40, 100, 100))
|
return -EIO;
|
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))
|
return -EIO;
|
}
|
|
return 0;
|
}
|
|
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;
|
|
netdev = adapter->netdev;
|
|
/* disable auto duplex, and speed detection. Phylib does that */
|
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);
|
|
if (!is_valid_ether_addr(adapter->mac_address)) {
|
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)
|
eth_random_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,
|
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)
|
{
|
return lan743x_phy_reset(adapter);
|
}
|
|
static void lan743x_phy_link_status_change(struct net_device *netdev)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
struct phy_device *phydev = netdev->phydev;
|
u32 data;
|
|
phy_print_status(phydev);
|
if (phydev->state == PHY_RUNNING) {
|
int remote_advertisement = 0;
|
int local_advertisement = 0;
|
|
data = lan743x_csr_read(adapter, MAC_CR);
|
|
/* set interface mode */
|
if (phy_interface_mode_is_rgmii(adapter->phy_mode))
|
/* RGMII */
|
data &= ~MAC_CR_MII_EN_;
|
else
|
/* GMII */
|
data |= MAC_CR_MII_EN_;
|
|
/* set duplex mode */
|
if (phydev->duplex)
|
data |= MAC_CR_DPX_;
|
else
|
data &= ~MAC_CR_DPX_;
|
|
/* set bus speed */
|
switch (phydev->speed) {
|
case SPEED_10:
|
data &= ~MAC_CR_CFG_H_;
|
data &= ~MAC_CR_CFG_L_;
|
break;
|
case SPEED_100:
|
data &= ~MAC_CR_CFG_H_;
|
data |= MAC_CR_CFG_L_;
|
break;
|
case SPEED_1000:
|
data |= MAC_CR_CFG_H_;
|
data &= ~MAC_CR_CFG_L_;
|
break;
|
}
|
lan743x_csr_write(adapter, MAC_CR, data);
|
|
local_advertisement =
|
linkmode_adv_to_mii_adv_t(phydev->advertising);
|
remote_advertisement =
|
linkmode_adv_to_mii_adv_t(phydev->lp_advertising);
|
|
lan743x_phy_update_flowcontrol(adapter, local_advertisement,
|
remote_advertisement);
|
lan743x_ptp_update_latency(adapter, phydev->speed);
|
}
|
}
|
|
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 = NULL;
|
struct device_node *phynode;
|
struct net_device *netdev;
|
int ret = -EIO;
|
|
netdev = adapter->netdev;
|
phynode = of_node_get(adapter->pdev->dev.of_node);
|
|
if (phynode) {
|
/* try devicetree phy, or fixed link */
|
of_get_phy_mode(phynode, &adapter->phy_mode);
|
|
if (of_phy_is_fixed_link(phynode)) {
|
ret = of_phy_register_fixed_link(phynode);
|
if (ret) {
|
netdev_err(netdev,
|
"cannot register fixed PHY\n");
|
of_node_put(phynode);
|
goto return_error;
|
}
|
}
|
phydev = of_phy_connect(netdev, phynode,
|
lan743x_phy_link_status_change, 0,
|
adapter->phy_mode);
|
of_node_put(phynode);
|
}
|
|
if (!phydev) {
|
/* try internal phy */
|
phydev = phy_find_first(adapter->mdiobus);
|
if (!phydev)
|
goto return_error;
|
|
adapter->phy_mode = PHY_INTERFACE_MODE_GMII;
|
ret = phy_connect_direct(netdev, phydev,
|
lan743x_phy_link_status_change,
|
adapter->phy_mode);
|
if (ret)
|
goto return_error;
|
}
|
|
/* MAC doesn't support 1000T Half */
|
phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_1000baseT_Half_BIT);
|
|
/* support both flow controls */
|
phy_support_asym_pause(phydev);
|
phy->fc_request_control = (FLOW_CTRL_RX | FLOW_CTRL_TX);
|
phy->fc_autoneg = phydev->autoneg;
|
|
phy_start(phydev);
|
phy_start_aneg(phydev);
|
return 0;
|
|
return_error:
|
return ret;
|
}
|
|
static void lan743x_rfe_open(struct lan743x_adapter *adapter)
|
{
|
lan743x_csr_write(adapter, RFE_RSS_CFG,
|
RFE_RSS_CFG_UDP_IPV6_EX_ |
|
RFE_RSS_CFG_TCP_IPV6_EX_ |
|
RFE_RSS_CFG_IPV6_EX_ |
|
RFE_RSS_CFG_UDP_IPV6_ |
|
RFE_RSS_CFG_TCP_IPV6_ |
|
RFE_RSS_CFG_IPV6_ |
|
RFE_RSS_CFG_UDP_IPV4_ |
|
RFE_RSS_CFG_TCP_IPV4_ |
|
RFE_RSS_CFG_IPV4_ |
|
RFE_RSS_CFG_VALID_HASH_BITS_ |
|
RFE_RSS_CFG_RSS_QUEUE_ENABLE_ |
|
RFE_RSS_CFG_RSS_HASH_STORE_ |
|
RFE_RSS_CFG_RSS_ENABLE_);
|
}
|
|
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_PROMISC) {
|
rfctl |= RFE_CTL_AM_ | RFE_CTL_AU_;
|
} else {
|
if (netdev->flags & IFF_ALLMULTI)
|
rfctl |= RFE_CTL_AM_;
|
}
|
|
memset(hash_table, 0, DP_SEL_VHF_HASH_LEN * sizeof(u32));
|
if (netdev_mc_count(netdev)) {
|
struct netdev_hw_addr *ha;
|
int i;
|
|
rfctl |= RFE_CTL_DA_PERFECT_;
|
i = 1;
|
netdev_for_each_mc_addr(ha, netdev) {
|
/* set first 32 into Perfect Filter */
|
if (i < 33) {
|
lan743x_csr_write(adapter,
|
RFE_ADDR_FILT_HI(i), 0);
|
data = ha->addr[3];
|
data = ha->addr[2] | (data << 8);
|
data = ha->addr[1] | (data << 8);
|
data = ha->addr[0] | (data << 8);
|
lan743x_csr_write(adapter,
|
RFE_ADDR_FILT_LO(i), data);
|
data = ha->addr[5];
|
data = ha->addr[4] | (data << 8);
|
data |= RFE_ADDR_FILT_HI_VALID_;
|
lan743x_csr_write(adapter,
|
RFE_ADDR_FILT_HI(i), data);
|
} else {
|
u32 bitnum = (ether_crc(ETH_ALEN, ha->addr) >>
|
23) & 0x1FF;
|
hash_table[bitnum / 32] |= (1 << (bitnum % 32));
|
rfctl |= RFE_CTL_MCAST_HASH_;
|
}
|
i++;
|
}
|
}
|
|
lan743x_dp_write(adapter, DP_SEL_RFE_RAM,
|
DP_SEL_VHF_VLAN_LEN,
|
DP_SEL_VHF_HASH_LEN, hash_table);
|
lan743x_csr_write(adapter, RFE_CTL, rfctl);
|
}
|
|
static int lan743x_dmac_init(struct lan743x_adapter *adapter)
|
{
|
u32 data = 0;
|
|
lan743x_csr_write(adapter, DMAC_CMD, DMAC_CMD_SWR_);
|
lan743x_csr_wait_for_bit(adapter, DMAC_CMD, DMAC_CMD_SWR_,
|
0, 1000, 20000, 100);
|
switch (DEFAULT_DMA_DESCRIPTOR_SPACING) {
|
case DMA_DESCRIPTOR_SPACING_16:
|
data = DMAC_CFG_MAX_DSPACE_16_;
|
break;
|
case DMA_DESCRIPTOR_SPACING_32:
|
data = DMAC_CFG_MAX_DSPACE_32_;
|
break;
|
case DMA_DESCRIPTOR_SPACING_64:
|
data = DMAC_CFG_MAX_DSPACE_64_;
|
break;
|
case DMA_DESCRIPTOR_SPACING_128:
|
data = DMAC_CFG_MAX_DSPACE_128_;
|
break;
|
default:
|
return -EPERM;
|
}
|
if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
|
data |= DMAC_CFG_COAL_EN_;
|
data |= DMAC_CFG_CH_ARB_SEL_RX_HIGH_;
|
data |= DMAC_CFG_MAX_READ_REQ_SET_(6);
|
lan743x_csr_write(adapter, DMAC_CFG, data);
|
data = DMAC_COAL_CFG_TIMER_LIMIT_SET_(1);
|
data |= DMAC_COAL_CFG_TIMER_TX_START_;
|
data |= DMAC_COAL_CFG_FLUSH_INTS_;
|
data |= DMAC_COAL_CFG_INT_EXIT_COAL_;
|
data |= DMAC_COAL_CFG_CSR_EXIT_COAL_;
|
data |= DMAC_COAL_CFG_TX_THRES_SET_(0x0A);
|
data |= DMAC_COAL_CFG_RX_THRES_SET_(0x0C);
|
lan743x_csr_write(adapter, DMAC_COAL_CFG, data);
|
data = DMAC_OBFF_TX_THRES_SET_(0x08);
|
data |= DMAC_OBFF_RX_THRES_SET_(0x0A);
|
lan743x_csr_write(adapter, DMAC_OBFF_CFG, data);
|
return 0;
|
}
|
|
static int lan743x_dmac_tx_get_state(struct lan743x_adapter *adapter,
|
int tx_channel)
|
{
|
u32 dmac_cmd = 0;
|
|
dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
|
return DMAC_CHANNEL_STATE_SET((dmac_cmd &
|
DMAC_CMD_START_T_(tx_channel)),
|
(dmac_cmd &
|
DMAC_CMD_STOP_T_(tx_channel)));
|
}
|
|
static int lan743x_dmac_tx_wait_till_stopped(struct lan743x_adapter *adapter,
|
int tx_channel)
|
{
|
int timeout = 100;
|
int result = 0;
|
|
while (timeout &&
|
((result = lan743x_dmac_tx_get_state(adapter, tx_channel)) ==
|
DMAC_CHANNEL_STATE_STOP_PENDING)) {
|
usleep_range(1000, 20000);
|
timeout--;
|
}
|
if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
|
result = -ENODEV;
|
return result;
|
}
|
|
static int lan743x_dmac_rx_get_state(struct lan743x_adapter *adapter,
|
int rx_channel)
|
{
|
u32 dmac_cmd = 0;
|
|
dmac_cmd = lan743x_csr_read(adapter, DMAC_CMD);
|
return DMAC_CHANNEL_STATE_SET((dmac_cmd &
|
DMAC_CMD_START_R_(rx_channel)),
|
(dmac_cmd &
|
DMAC_CMD_STOP_R_(rx_channel)));
|
}
|
|
static int lan743x_dmac_rx_wait_till_stopped(struct lan743x_adapter *adapter,
|
int rx_channel)
|
{
|
int timeout = 100;
|
int result = 0;
|
|
while (timeout &&
|
((result = lan743x_dmac_rx_get_state(adapter, rx_channel)) ==
|
DMAC_CHANNEL_STATE_STOP_PENDING)) {
|
usleep_range(1000, 20000);
|
timeout--;
|
}
|
if (result == DMAC_CHANNEL_STATE_STOP_PENDING)
|
result = -ENODEV;
|
return result;
|
}
|
|
static void lan743x_tx_release_desc(struct lan743x_tx *tx,
|
int descriptor_index, bool cleanup)
|
{
|
struct lan743x_tx_buffer_info *buffer_info = NULL;
|
struct lan743x_tx_descriptor *descriptor = NULL;
|
u32 descriptor_type = 0;
|
bool ignore_sync;
|
|
descriptor = &tx->ring_cpu_ptr[descriptor_index];
|
buffer_info = &tx->buffer_info[descriptor_index];
|
if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_ACTIVE))
|
goto done;
|
|
descriptor_type = le32_to_cpu(descriptor->data0) &
|
TX_DESC_DATA0_DTYPE_MASK_;
|
if (descriptor_type == TX_DESC_DATA0_DTYPE_DATA_)
|
goto clean_up_data_descriptor;
|
else
|
goto clear_active;
|
|
clean_up_data_descriptor:
|
if (buffer_info->dma_ptr) {
|
if (buffer_info->flags &
|
TX_BUFFER_INFO_FLAG_SKB_FRAGMENT) {
|
dma_unmap_page(&tx->adapter->pdev->dev,
|
buffer_info->dma_ptr,
|
buffer_info->buffer_length,
|
DMA_TO_DEVICE);
|
} else {
|
dma_unmap_single(&tx->adapter->pdev->dev,
|
buffer_info->dma_ptr,
|
buffer_info->buffer_length,
|
DMA_TO_DEVICE);
|
}
|
buffer_info->dma_ptr = 0;
|
buffer_info->buffer_length = 0;
|
}
|
if (!buffer_info->skb)
|
goto clear_active;
|
|
if (!(buffer_info->flags & TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED)) {
|
dev_kfree_skb_any(buffer_info->skb);
|
goto clear_skb;
|
}
|
|
if (cleanup) {
|
lan743x_ptp_unrequest_tx_timestamp(tx->adapter);
|
dev_kfree_skb_any(buffer_info->skb);
|
} else {
|
ignore_sync = (buffer_info->flags &
|
TX_BUFFER_INFO_FLAG_IGNORE_SYNC) != 0;
|
lan743x_ptp_tx_timestamp_skb(tx->adapter,
|
buffer_info->skb, ignore_sync);
|
}
|
|
clear_skb:
|
buffer_info->skb = NULL;
|
|
clear_active:
|
buffer_info->flags &= ~TX_BUFFER_INFO_FLAG_ACTIVE;
|
|
done:
|
memset(buffer_info, 0, sizeof(*buffer_info));
|
memset(descriptor, 0, sizeof(*descriptor));
|
}
|
|
static int lan743x_tx_next_index(struct lan743x_tx *tx, int index)
|
{
|
return ((++index) % tx->ring_size);
|
}
|
|
static void lan743x_tx_release_completed_descriptors(struct lan743x_tx *tx)
|
{
|
while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) {
|
lan743x_tx_release_desc(tx, tx->last_head, false);
|
tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
|
}
|
}
|
|
static void lan743x_tx_release_all_descriptors(struct lan743x_tx *tx)
|
{
|
u32 original_head = 0;
|
|
original_head = tx->last_head;
|
do {
|
lan743x_tx_release_desc(tx, tx->last_head, true);
|
tx->last_head = lan743x_tx_next_index(tx, tx->last_head);
|
} while (tx->last_head != original_head);
|
memset(tx->ring_cpu_ptr, 0,
|
sizeof(*tx->ring_cpu_ptr) * (tx->ring_size));
|
memset(tx->buffer_info, 0,
|
sizeof(*tx->buffer_info) * (tx->ring_size));
|
}
|
|
static int lan743x_tx_get_desc_cnt(struct lan743x_tx *tx,
|
struct sk_buff *skb)
|
{
|
int result = 1; /* 1 for the main skb buffer */
|
int nr_frags = 0;
|
|
if (skb_is_gso(skb))
|
result++; /* requires an extension descriptor */
|
nr_frags = skb_shinfo(skb)->nr_frags;
|
result += nr_frags; /* 1 for each fragment buffer */
|
return result;
|
}
|
|
static int lan743x_tx_get_avail_desc(struct lan743x_tx *tx)
|
{
|
int last_head = tx->last_head;
|
int last_tail = tx->last_tail;
|
|
if (last_tail >= last_head)
|
return tx->ring_size - last_tail + last_head - 1;
|
else
|
return last_head - last_tail - 1;
|
}
|
|
void lan743x_tx_set_timestamping_mode(struct lan743x_tx *tx,
|
bool enable_timestamping,
|
bool enable_onestep_sync)
|
{
|
if (enable_timestamping)
|
tx->ts_flags |= TX_TS_FLAG_TIMESTAMPING_ENABLED;
|
else
|
tx->ts_flags &= ~TX_TS_FLAG_TIMESTAMPING_ENABLED;
|
if (enable_onestep_sync)
|
tx->ts_flags |= TX_TS_FLAG_ONE_STEP_SYNC;
|
else
|
tx->ts_flags &= ~TX_TS_FLAG_ONE_STEP_SYNC;
|
}
|
|
static int lan743x_tx_frame_start(struct lan743x_tx *tx,
|
unsigned char *first_buffer,
|
unsigned int first_buffer_length,
|
unsigned int frame_length,
|
bool time_stamp,
|
bool check_sum)
|
{
|
/* called only from within lan743x_tx_xmit_frame.
|
* assuming tx->ring_lock has already been acquired.
|
*/
|
struct lan743x_tx_descriptor *tx_descriptor = NULL;
|
struct lan743x_tx_buffer_info *buffer_info = NULL;
|
struct lan743x_adapter *adapter = tx->adapter;
|
struct device *dev = &adapter->pdev->dev;
|
dma_addr_t dma_ptr;
|
|
tx->frame_flags |= TX_FRAME_FLAG_IN_PROGRESS;
|
tx->frame_first = tx->last_tail;
|
tx->frame_tail = tx->frame_first;
|
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
buffer_info = &tx->buffer_info[tx->frame_tail];
|
dma_ptr = dma_map_single(dev, first_buffer, first_buffer_length,
|
DMA_TO_DEVICE);
|
if (dma_mapping_error(dev, dma_ptr))
|
return -ENOMEM;
|
|
tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
|
tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
|
tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
|
TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
|
|
buffer_info->skb = NULL;
|
buffer_info->dma_ptr = dma_ptr;
|
buffer_info->buffer_length = first_buffer_length;
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
|
|
tx->frame_data0 = (first_buffer_length &
|
TX_DESC_DATA0_BUF_LENGTH_MASK_) |
|
TX_DESC_DATA0_DTYPE_DATA_ |
|
TX_DESC_DATA0_FS_ |
|
TX_DESC_DATA0_FCS_;
|
if (time_stamp)
|
tx->frame_data0 |= TX_DESC_DATA0_TSE_;
|
|
if (check_sum)
|
tx->frame_data0 |= TX_DESC_DATA0_ICE_ |
|
TX_DESC_DATA0_IPE_ |
|
TX_DESC_DATA0_TPE_;
|
|
/* data0 will be programmed in one of other frame assembler functions */
|
return 0;
|
}
|
|
static void lan743x_tx_frame_add_lso(struct lan743x_tx *tx,
|
unsigned int frame_length,
|
int nr_frags)
|
{
|
/* called only from within lan743x_tx_xmit_frame.
|
* assuming tx->ring_lock has already been acquired.
|
*/
|
struct lan743x_tx_descriptor *tx_descriptor = NULL;
|
struct lan743x_tx_buffer_info *buffer_info = NULL;
|
|
/* wrap up previous descriptor */
|
tx->frame_data0 |= TX_DESC_DATA0_EXT_;
|
if (nr_frags <= 0) {
|
tx->frame_data0 |= TX_DESC_DATA0_LS_;
|
tx->frame_data0 |= TX_DESC_DATA0_IOC_;
|
}
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
|
|
/* move to next descriptor */
|
tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
buffer_info = &tx->buffer_info[tx->frame_tail];
|
|
/* add extension descriptor */
|
tx_descriptor->data1 = 0;
|
tx_descriptor->data2 = 0;
|
tx_descriptor->data3 = 0;
|
|
buffer_info->skb = NULL;
|
buffer_info->dma_ptr = 0;
|
buffer_info->buffer_length = 0;
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
|
|
tx->frame_data0 = (frame_length & TX_DESC_DATA0_EXT_PAY_LENGTH_MASK_) |
|
TX_DESC_DATA0_DTYPE_EXT_ |
|
TX_DESC_DATA0_EXT_LSO_;
|
|
/* data0 will be programmed in one of other frame assembler functions */
|
}
|
|
static int lan743x_tx_frame_add_fragment(struct lan743x_tx *tx,
|
const skb_frag_t *fragment,
|
unsigned int frame_length)
|
{
|
/* called only from within lan743x_tx_xmit_frame
|
* assuming tx->ring_lock has already been acquired
|
*/
|
struct lan743x_tx_descriptor *tx_descriptor = NULL;
|
struct lan743x_tx_buffer_info *buffer_info = NULL;
|
struct lan743x_adapter *adapter = tx->adapter;
|
struct device *dev = &adapter->pdev->dev;
|
unsigned int fragment_length = 0;
|
dma_addr_t dma_ptr;
|
|
fragment_length = skb_frag_size(fragment);
|
if (!fragment_length)
|
return 0;
|
|
/* wrap up previous descriptor */
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
|
|
/* move to next descriptor */
|
tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
buffer_info = &tx->buffer_info[tx->frame_tail];
|
dma_ptr = skb_frag_dma_map(dev, fragment,
|
0, fragment_length,
|
DMA_TO_DEVICE);
|
if (dma_mapping_error(dev, dma_ptr)) {
|
int desc_index;
|
|
/* cleanup all previously setup descriptors */
|
desc_index = tx->frame_first;
|
while (desc_index != tx->frame_tail) {
|
lan743x_tx_release_desc(tx, desc_index, true);
|
desc_index = lan743x_tx_next_index(tx, desc_index);
|
}
|
dma_wmb();
|
tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
|
tx->frame_first = 0;
|
tx->frame_data0 = 0;
|
tx->frame_tail = 0;
|
return -ENOMEM;
|
}
|
|
tx_descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(dma_ptr));
|
tx_descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(dma_ptr));
|
tx_descriptor->data3 = cpu_to_le32((frame_length << 16) &
|
TX_DESC_DATA3_FRAME_LENGTH_MSS_MASK_);
|
|
buffer_info->skb = NULL;
|
buffer_info->dma_ptr = dma_ptr;
|
buffer_info->buffer_length = fragment_length;
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_ACTIVE;
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_SKB_FRAGMENT;
|
|
tx->frame_data0 = (fragment_length & TX_DESC_DATA0_BUF_LENGTH_MASK_) |
|
TX_DESC_DATA0_DTYPE_DATA_ |
|
TX_DESC_DATA0_FCS_;
|
|
/* data0 will be programmed in one of other frame assembler functions */
|
return 0;
|
}
|
|
static void lan743x_tx_frame_end(struct lan743x_tx *tx,
|
struct sk_buff *skb,
|
bool time_stamp,
|
bool ignore_sync)
|
{
|
/* called only from within lan743x_tx_xmit_frame
|
* assuming tx->ring_lock has already been acquired
|
*/
|
struct lan743x_tx_descriptor *tx_descriptor = NULL;
|
struct lan743x_tx_buffer_info *buffer_info = NULL;
|
struct lan743x_adapter *adapter = tx->adapter;
|
u32 tx_tail_flags = 0;
|
|
/* wrap up previous descriptor */
|
if ((tx->frame_data0 & TX_DESC_DATA0_DTYPE_MASK_) ==
|
TX_DESC_DATA0_DTYPE_DATA_) {
|
tx->frame_data0 |= TX_DESC_DATA0_LS_;
|
tx->frame_data0 |= TX_DESC_DATA0_IOC_;
|
}
|
|
tx_descriptor = &tx->ring_cpu_ptr[tx->frame_tail];
|
buffer_info = &tx->buffer_info[tx->frame_tail];
|
buffer_info->skb = skb;
|
if (time_stamp)
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_TIMESTAMP_REQUESTED;
|
if (ignore_sync)
|
buffer_info->flags |= TX_BUFFER_INFO_FLAG_IGNORE_SYNC;
|
|
tx_descriptor->data0 = cpu_to_le32(tx->frame_data0);
|
tx->frame_tail = lan743x_tx_next_index(tx, tx->frame_tail);
|
tx->last_tail = tx->frame_tail;
|
|
dma_wmb();
|
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
|
tx_tail_flags |= TX_TAIL_SET_TOP_INT_VEC_EN_;
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET)
|
tx_tail_flags |= TX_TAIL_SET_DMAC_INT_EN_ |
|
TX_TAIL_SET_TOP_INT_EN_;
|
|
lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
|
tx_tail_flags | tx->frame_tail);
|
tx->frame_flags &= ~TX_FRAME_FLAG_IN_PROGRESS;
|
}
|
|
static netdev_tx_t lan743x_tx_xmit_frame(struct lan743x_tx *tx,
|
struct sk_buff *skb)
|
{
|
int required_number_of_descriptors = 0;
|
unsigned int start_frame_length = 0;
|
unsigned int frame_length = 0;
|
unsigned int head_length = 0;
|
unsigned long irq_flags = 0;
|
bool do_timestamp = false;
|
bool ignore_sync = false;
|
int nr_frags = 0;
|
bool gso = false;
|
int j;
|
|
required_number_of_descriptors = lan743x_tx_get_desc_cnt(tx, skb);
|
|
spin_lock_irqsave(&tx->ring_lock, irq_flags);
|
if (required_number_of_descriptors >
|
lan743x_tx_get_avail_desc(tx)) {
|
if (required_number_of_descriptors > (tx->ring_size - 1)) {
|
dev_kfree_skb_irq(skb);
|
} else {
|
/* save to overflow buffer */
|
tx->overflow_skb = skb;
|
netif_stop_queue(tx->adapter->netdev);
|
}
|
goto unlock;
|
}
|
|
/* space available, transmit skb */
|
if ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) &&
|
(tx->ts_flags & TX_TS_FLAG_TIMESTAMPING_ENABLED) &&
|
(lan743x_ptp_request_tx_timestamp(tx->adapter))) {
|
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
|
do_timestamp = true;
|
if (tx->ts_flags & TX_TS_FLAG_ONE_STEP_SYNC)
|
ignore_sync = true;
|
}
|
head_length = skb_headlen(skb);
|
frame_length = skb_pagelen(skb);
|
nr_frags = skb_shinfo(skb)->nr_frags;
|
start_frame_length = frame_length;
|
gso = skb_is_gso(skb);
|
if (gso) {
|
start_frame_length = max(skb_shinfo(skb)->gso_size,
|
(unsigned short)8);
|
}
|
|
if (lan743x_tx_frame_start(tx,
|
skb->data, head_length,
|
start_frame_length,
|
do_timestamp,
|
skb->ip_summed == CHECKSUM_PARTIAL)) {
|
dev_kfree_skb_irq(skb);
|
goto unlock;
|
}
|
|
if (gso)
|
lan743x_tx_frame_add_lso(tx, frame_length, nr_frags);
|
|
if (nr_frags <= 0)
|
goto finish;
|
|
for (j = 0; j < nr_frags; j++) {
|
const skb_frag_t *frag = &(skb_shinfo(skb)->frags[j]);
|
|
if (lan743x_tx_frame_add_fragment(tx, frag, frame_length)) {
|
/* upon error no need to call
|
* lan743x_tx_frame_end
|
* frame assembler clean up was performed inside
|
* lan743x_tx_frame_add_fragment
|
*/
|
dev_kfree_skb_irq(skb);
|
goto unlock;
|
}
|
}
|
|
finish:
|
lan743x_tx_frame_end(tx, skb, do_timestamp, ignore_sync);
|
|
unlock:
|
spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
|
return NETDEV_TX_OK;
|
}
|
|
static int lan743x_tx_napi_poll(struct napi_struct *napi, int weight)
|
{
|
struct lan743x_tx *tx = container_of(napi, struct lan743x_tx, napi);
|
struct lan743x_adapter *adapter = tx->adapter;
|
bool start_transmitter = false;
|
unsigned long irq_flags = 0;
|
u32 ioc_bit = 0;
|
|
ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
|
lan743x_csr_read(adapter, DMAC_INT_STS);
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C)
|
lan743x_csr_write(adapter, DMAC_INT_STS, ioc_bit);
|
spin_lock_irqsave(&tx->ring_lock, irq_flags);
|
|
/* clean up tx ring */
|
lan743x_tx_release_completed_descriptors(tx);
|
if (netif_queue_stopped(adapter->netdev)) {
|
if (tx->overflow_skb) {
|
if (lan743x_tx_get_desc_cnt(tx, tx->overflow_skb) <=
|
lan743x_tx_get_avail_desc(tx))
|
start_transmitter = true;
|
} else {
|
netif_wake_queue(adapter->netdev);
|
}
|
}
|
spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
|
|
if (start_transmitter) {
|
/* space is now available, transmit overflow skb */
|
lan743x_tx_xmit_frame(tx, tx->overflow_skb);
|
tx->overflow_skb = NULL;
|
netif_wake_queue(adapter->netdev);
|
}
|
|
if (!napi_complete(napi))
|
goto done;
|
|
/* enable isr */
|
lan743x_csr_write(adapter, INT_EN_SET,
|
INT_BIT_DMA_TX_(tx->channel_number));
|
lan743x_csr_read(adapter, INT_STS);
|
|
done:
|
return 0;
|
}
|
|
static void lan743x_tx_ring_cleanup(struct lan743x_tx *tx)
|
{
|
if (tx->head_cpu_ptr) {
|
dma_free_coherent(&tx->adapter->pdev->dev,
|
sizeof(*tx->head_cpu_ptr), tx->head_cpu_ptr,
|
tx->head_dma_ptr);
|
tx->head_cpu_ptr = NULL;
|
tx->head_dma_ptr = 0;
|
}
|
kfree(tx->buffer_info);
|
tx->buffer_info = NULL;
|
|
if (tx->ring_cpu_ptr) {
|
dma_free_coherent(&tx->adapter->pdev->dev,
|
tx->ring_allocation_size, tx->ring_cpu_ptr,
|
tx->ring_dma_ptr);
|
tx->ring_allocation_size = 0;
|
tx->ring_cpu_ptr = NULL;
|
tx->ring_dma_ptr = 0;
|
}
|
tx->ring_size = 0;
|
}
|
|
static int lan743x_tx_ring_init(struct lan743x_tx *tx)
|
{
|
size_t ring_allocation_size = 0;
|
void *cpu_ptr = NULL;
|
dma_addr_t dma_ptr;
|
int ret = -ENOMEM;
|
|
tx->ring_size = LAN743X_TX_RING_SIZE;
|
if (tx->ring_size & ~TX_CFG_B_TX_RING_LEN_MASK_) {
|
ret = -EINVAL;
|
goto cleanup;
|
}
|
if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
|
DMA_BIT_MASK(64))) {
|
if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
|
DMA_BIT_MASK(32))) {
|
dev_warn(&tx->adapter->pdev->dev,
|
"lan743x_: No suitable DMA available\n");
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
}
|
ring_allocation_size = ALIGN(tx->ring_size *
|
sizeof(struct lan743x_tx_descriptor),
|
PAGE_SIZE);
|
dma_ptr = 0;
|
cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
|
ring_allocation_size, &dma_ptr, GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
|
tx->ring_allocation_size = ring_allocation_size;
|
tx->ring_cpu_ptr = (struct lan743x_tx_descriptor *)cpu_ptr;
|
tx->ring_dma_ptr = dma_ptr;
|
|
cpu_ptr = kcalloc(tx->ring_size, sizeof(*tx->buffer_info), GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
tx->buffer_info = (struct lan743x_tx_buffer_info *)cpu_ptr;
|
dma_ptr = 0;
|
cpu_ptr = dma_alloc_coherent(&tx->adapter->pdev->dev,
|
sizeof(*tx->head_cpu_ptr), &dma_ptr,
|
GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
|
tx->head_cpu_ptr = cpu_ptr;
|
tx->head_dma_ptr = dma_ptr;
|
if (tx->head_dma_ptr & 0x3) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
|
return 0;
|
|
cleanup:
|
lan743x_tx_ring_cleanup(tx);
|
return ret;
|
}
|
|
static void lan743x_tx_close(struct lan743x_tx *tx)
|
{
|
struct lan743x_adapter *adapter = tx->adapter;
|
|
lan743x_csr_write(adapter,
|
DMAC_CMD,
|
DMAC_CMD_STOP_T_(tx->channel_number));
|
lan743x_dmac_tx_wait_till_stopped(adapter, tx->channel_number);
|
|
lan743x_csr_write(adapter,
|
DMAC_INT_EN_CLR,
|
DMAC_INT_BIT_TX_IOC_(tx->channel_number));
|
lan743x_csr_write(adapter, INT_EN_CLR,
|
INT_BIT_DMA_TX_(tx->channel_number));
|
napi_disable(&tx->napi);
|
netif_napi_del(&tx->napi);
|
|
lan743x_csr_write(adapter, FCT_TX_CTL,
|
FCT_TX_CTL_DIS_(tx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
|
FCT_TX_CTL_EN_(tx->channel_number),
|
0, 1000, 20000, 100);
|
|
lan743x_tx_release_all_descriptors(tx);
|
|
if (tx->overflow_skb) {
|
dev_kfree_skb(tx->overflow_skb);
|
tx->overflow_skb = NULL;
|
}
|
|
lan743x_tx_ring_cleanup(tx);
|
}
|
|
static int lan743x_tx_open(struct lan743x_tx *tx)
|
{
|
struct lan743x_adapter *adapter = NULL;
|
u32 data = 0;
|
int ret;
|
|
adapter = tx->adapter;
|
ret = lan743x_tx_ring_init(tx);
|
if (ret)
|
return ret;
|
|
/* initialize fifo */
|
lan743x_csr_write(adapter, FCT_TX_CTL,
|
FCT_TX_CTL_RESET_(tx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, FCT_TX_CTL,
|
FCT_TX_CTL_RESET_(tx->channel_number),
|
0, 1000, 20000, 100);
|
|
/* enable fifo */
|
lan743x_csr_write(adapter, FCT_TX_CTL,
|
FCT_TX_CTL_EN_(tx->channel_number));
|
|
/* reset tx channel */
|
lan743x_csr_write(adapter, DMAC_CMD,
|
DMAC_CMD_TX_SWR_(tx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
|
DMAC_CMD_TX_SWR_(tx->channel_number),
|
0, 1000, 20000, 100);
|
|
/* Write TX_BASE_ADDR */
|
lan743x_csr_write(adapter,
|
TX_BASE_ADDRH(tx->channel_number),
|
DMA_ADDR_HIGH32(tx->ring_dma_ptr));
|
lan743x_csr_write(adapter,
|
TX_BASE_ADDRL(tx->channel_number),
|
DMA_ADDR_LOW32(tx->ring_dma_ptr));
|
|
/* Write TX_CFG_B */
|
data = lan743x_csr_read(adapter, TX_CFG_B(tx->channel_number));
|
data &= ~TX_CFG_B_TX_RING_LEN_MASK_;
|
data |= ((tx->ring_size) & TX_CFG_B_TX_RING_LEN_MASK_);
|
if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
|
data |= TX_CFG_B_TDMABL_512_;
|
lan743x_csr_write(adapter, TX_CFG_B(tx->channel_number), data);
|
|
/* Write TX_CFG_A */
|
data = TX_CFG_A_TX_TMR_HPWB_SEL_IOC_ | TX_CFG_A_TX_HP_WB_EN_;
|
if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
|
data |= TX_CFG_A_TX_HP_WB_ON_INT_TMR_;
|
data |= TX_CFG_A_TX_PF_THRES_SET_(0x10);
|
data |= TX_CFG_A_TX_PF_PRI_THRES_SET_(0x04);
|
data |= TX_CFG_A_TX_HP_WB_THRES_SET_(0x07);
|
}
|
lan743x_csr_write(adapter, TX_CFG_A(tx->channel_number), data);
|
|
/* Write TX_HEAD_WRITEBACK_ADDR */
|
lan743x_csr_write(adapter,
|
TX_HEAD_WRITEBACK_ADDRH(tx->channel_number),
|
DMA_ADDR_HIGH32(tx->head_dma_ptr));
|
lan743x_csr_write(adapter,
|
TX_HEAD_WRITEBACK_ADDRL(tx->channel_number),
|
DMA_ADDR_LOW32(tx->head_dma_ptr));
|
|
/* set last head */
|
tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));
|
|
/* write TX_TAIL */
|
tx->last_tail = 0;
|
lan743x_csr_write(adapter, TX_TAIL(tx->channel_number),
|
(u32)(tx->last_tail));
|
tx->vector_flags = lan743x_intr_get_vector_flags(adapter,
|
INT_BIT_DMA_TX_
|
(tx->channel_number));
|
netif_tx_napi_add(adapter->netdev,
|
&tx->napi, lan743x_tx_napi_poll,
|
tx->ring_size - 1);
|
napi_enable(&tx->napi);
|
|
data = 0;
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
|
data |= TX_CFG_C_TX_TOP_INT_EN_AUTO_CLR_;
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
|
data |= TX_CFG_C_TX_DMA_INT_STS_AUTO_CLR_;
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
|
data |= TX_CFG_C_TX_INT_STS_R2C_MODE_MASK_;
|
if (tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
|
data |= TX_CFG_C_TX_INT_EN_R2C_;
|
lan743x_csr_write(adapter, TX_CFG_C(tx->channel_number), data);
|
|
if (!(tx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET))
|
lan743x_csr_write(adapter, INT_EN_SET,
|
INT_BIT_DMA_TX_(tx->channel_number));
|
lan743x_csr_write(adapter, DMAC_INT_EN_SET,
|
DMAC_INT_BIT_TX_IOC_(tx->channel_number));
|
|
/* start dmac channel */
|
lan743x_csr_write(adapter, DMAC_CMD,
|
DMAC_CMD_START_T_(tx->channel_number));
|
return 0;
|
}
|
|
static int lan743x_rx_next_index(struct lan743x_rx *rx, int index)
|
{
|
return ((++index) % rx->ring_size);
|
}
|
|
static struct sk_buff *lan743x_rx_allocate_skb(struct lan743x_rx *rx, gfp_t gfp)
|
{
|
int length = 0;
|
|
length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING);
|
return __netdev_alloc_skb(rx->adapter->netdev,
|
length, gfp);
|
}
|
|
static void lan743x_rx_update_tail(struct lan743x_rx *rx, int index)
|
{
|
/* update the tail once per 8 descriptors */
|
if ((index & 7) == 7)
|
lan743x_csr_write(rx->adapter, RX_TAIL(rx->channel_number),
|
index);
|
}
|
|
static int lan743x_rx_init_ring_element(struct lan743x_rx *rx, int index,
|
struct sk_buff *skb)
|
{
|
struct lan743x_rx_buffer_info *buffer_info;
|
struct lan743x_rx_descriptor *descriptor;
|
int length = 0;
|
|
length = (LAN743X_MAX_FRAME_SIZE + ETH_HLEN + 4 + RX_HEAD_PADDING);
|
descriptor = &rx->ring_cpu_ptr[index];
|
buffer_info = &rx->buffer_info[index];
|
buffer_info->skb = skb;
|
if (!(buffer_info->skb))
|
return -ENOMEM;
|
buffer_info->dma_ptr = dma_map_single(&rx->adapter->pdev->dev,
|
buffer_info->skb->data,
|
length,
|
DMA_FROM_DEVICE);
|
if (dma_mapping_error(&rx->adapter->pdev->dev,
|
buffer_info->dma_ptr)) {
|
buffer_info->dma_ptr = 0;
|
return -ENOMEM;
|
}
|
|
buffer_info->buffer_length = length;
|
descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
|
descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
|
descriptor->data3 = 0;
|
descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
|
(length & RX_DESC_DATA0_BUF_LENGTH_MASK_)));
|
skb_reserve(buffer_info->skb, RX_HEAD_PADDING);
|
lan743x_rx_update_tail(rx, index);
|
|
return 0;
|
}
|
|
static void lan743x_rx_reuse_ring_element(struct lan743x_rx *rx, int index)
|
{
|
struct lan743x_rx_buffer_info *buffer_info;
|
struct lan743x_rx_descriptor *descriptor;
|
|
descriptor = &rx->ring_cpu_ptr[index];
|
buffer_info = &rx->buffer_info[index];
|
|
descriptor->data1 = cpu_to_le32(DMA_ADDR_LOW32(buffer_info->dma_ptr));
|
descriptor->data2 = cpu_to_le32(DMA_ADDR_HIGH32(buffer_info->dma_ptr));
|
descriptor->data3 = 0;
|
descriptor->data0 = cpu_to_le32((RX_DESC_DATA0_OWN_ |
|
((buffer_info->buffer_length) &
|
RX_DESC_DATA0_BUF_LENGTH_MASK_)));
|
lan743x_rx_update_tail(rx, index);
|
}
|
|
static void lan743x_rx_release_ring_element(struct lan743x_rx *rx, int index)
|
{
|
struct lan743x_rx_buffer_info *buffer_info;
|
struct lan743x_rx_descriptor *descriptor;
|
|
descriptor = &rx->ring_cpu_ptr[index];
|
buffer_info = &rx->buffer_info[index];
|
|
memset(descriptor, 0, sizeof(*descriptor));
|
|
if (buffer_info->dma_ptr) {
|
dma_unmap_single(&rx->adapter->pdev->dev,
|
buffer_info->dma_ptr,
|
buffer_info->buffer_length,
|
DMA_FROM_DEVICE);
|
buffer_info->dma_ptr = 0;
|
}
|
|
if (buffer_info->skb) {
|
dev_kfree_skb(buffer_info->skb);
|
buffer_info->skb = NULL;
|
}
|
|
memset(buffer_info, 0, sizeof(*buffer_info));
|
}
|
|
static int lan743x_rx_process_packet(struct lan743x_rx *rx)
|
{
|
struct skb_shared_hwtstamps *hwtstamps = NULL;
|
int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
|
int current_head_index = le32_to_cpu(*rx->head_cpu_ptr);
|
struct lan743x_rx_buffer_info *buffer_info;
|
struct lan743x_rx_descriptor *descriptor;
|
int extension_index = -1;
|
int first_index = -1;
|
int last_index = -1;
|
|
if (current_head_index < 0 || current_head_index >= rx->ring_size)
|
goto done;
|
|
if (rx->last_head < 0 || rx->last_head >= rx->ring_size)
|
goto done;
|
|
if (rx->last_head != current_head_index) {
|
descriptor = &rx->ring_cpu_ptr[rx->last_head];
|
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
|
goto done;
|
|
if (!(le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_))
|
goto done;
|
|
first_index = rx->last_head;
|
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_) {
|
last_index = rx->last_head;
|
} else {
|
int index;
|
|
index = lan743x_rx_next_index(rx, first_index);
|
while (index != current_head_index) {
|
descriptor = &rx->ring_cpu_ptr[index];
|
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
|
goto done;
|
|
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_) {
|
last_index = index;
|
break;
|
}
|
index = lan743x_rx_next_index(rx, index);
|
}
|
}
|
if (last_index >= 0) {
|
descriptor = &rx->ring_cpu_ptr[last_index];
|
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) {
|
/* extension is expected to follow */
|
int index = lan743x_rx_next_index(rx,
|
last_index);
|
if (index != current_head_index) {
|
descriptor = &rx->ring_cpu_ptr[index];
|
if (le32_to_cpu(descriptor->data0) &
|
RX_DESC_DATA0_OWN_) {
|
goto done;
|
}
|
if (le32_to_cpu(descriptor->data0) &
|
RX_DESC_DATA0_EXT_) {
|
extension_index = index;
|
} else {
|
goto done;
|
}
|
} else {
|
/* extension is not yet available */
|
/* prevent processing of this packet */
|
first_index = -1;
|
last_index = -1;
|
}
|
}
|
}
|
}
|
if (first_index >= 0 && last_index >= 0) {
|
int real_last_index = last_index;
|
struct sk_buff *skb = NULL;
|
u32 ts_sec = 0;
|
u32 ts_nsec = 0;
|
|
/* packet is available */
|
if (first_index == last_index) {
|
/* single buffer packet */
|
struct sk_buff *new_skb = NULL;
|
int packet_length;
|
|
new_skb = lan743x_rx_allocate_skb(rx,
|
GFP_ATOMIC | GFP_DMA);
|
if (!new_skb) {
|
/* failed to allocate next skb.
|
* Memory is very low.
|
* Drop this packet and reuse buffer.
|
*/
|
lan743x_rx_reuse_ring_element(rx, first_index);
|
goto process_extension;
|
}
|
|
buffer_info = &rx->buffer_info[first_index];
|
skb = buffer_info->skb;
|
descriptor = &rx->ring_cpu_ptr[first_index];
|
|
/* unmap from dma */
|
if (buffer_info->dma_ptr) {
|
dma_unmap_single(&rx->adapter->pdev->dev,
|
buffer_info->dma_ptr,
|
buffer_info->buffer_length,
|
DMA_FROM_DEVICE);
|
buffer_info->dma_ptr = 0;
|
buffer_info->buffer_length = 0;
|
}
|
buffer_info->skb = NULL;
|
packet_length = RX_DESC_DATA0_FRAME_LENGTH_GET_
|
(le32_to_cpu(descriptor->data0));
|
skb_put(skb, packet_length - 4);
|
skb->protocol = eth_type_trans(skb,
|
rx->adapter->netdev);
|
lan743x_rx_init_ring_element(rx, first_index, new_skb);
|
} else {
|
int index = first_index;
|
|
/* multi buffer packet not supported */
|
/* this should not happen since
|
* buffers are allocated to be at least jumbo size
|
*/
|
|
/* clean up buffers */
|
if (first_index <= last_index) {
|
while ((index >= first_index) &&
|
(index <= last_index)) {
|
lan743x_rx_reuse_ring_element(rx,
|
index);
|
index = lan743x_rx_next_index(rx,
|
index);
|
}
|
} else {
|
while ((index >= first_index) ||
|
(index <= last_index)) {
|
lan743x_rx_reuse_ring_element(rx,
|
index);
|
index = lan743x_rx_next_index(rx,
|
index);
|
}
|
}
|
}
|
|
process_extension:
|
if (extension_index >= 0) {
|
descriptor = &rx->ring_cpu_ptr[extension_index];
|
buffer_info = &rx->buffer_info[extension_index];
|
|
ts_sec = le32_to_cpu(descriptor->data1);
|
ts_nsec = (le32_to_cpu(descriptor->data2) &
|
RX_DESC_DATA2_TS_NS_MASK_);
|
lan743x_rx_reuse_ring_element(rx, extension_index);
|
real_last_index = extension_index;
|
}
|
|
if (!skb) {
|
result = RX_PROCESS_RESULT_PACKET_DROPPED;
|
goto move_forward;
|
}
|
|
if (extension_index < 0)
|
goto pass_packet_to_os;
|
hwtstamps = skb_hwtstamps(skb);
|
if (hwtstamps)
|
hwtstamps->hwtstamp = ktime_set(ts_sec, ts_nsec);
|
|
pass_packet_to_os:
|
/* pass packet to OS */
|
napi_gro_receive(&rx->napi, skb);
|
result = RX_PROCESS_RESULT_PACKET_RECEIVED;
|
|
move_forward:
|
/* push tail and head forward */
|
rx->last_tail = real_last_index;
|
rx->last_head = lan743x_rx_next_index(rx, real_last_index);
|
}
|
done:
|
return result;
|
}
|
|
static int lan743x_rx_napi_poll(struct napi_struct *napi, int weight)
|
{
|
struct lan743x_rx *rx = container_of(napi, struct lan743x_rx, napi);
|
struct lan743x_adapter *adapter = rx->adapter;
|
int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
|
u32 rx_tail_flags = 0;
|
int count;
|
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_W2C) {
|
/* clear int status bit before reading packet */
|
lan743x_csr_write(adapter, DMAC_INT_STS,
|
DMAC_INT_BIT_RXFRM_(rx->channel_number));
|
}
|
for (count = 0; count < weight; count++) {
|
result = lan743x_rx_process_packet(rx);
|
if (result == RX_PROCESS_RESULT_NOTHING_TO_DO)
|
break;
|
}
|
rx->frame_count += count;
|
if (count == weight || result == RX_PROCESS_RESULT_PACKET_RECEIVED)
|
return weight;
|
|
if (!napi_complete_done(napi, count))
|
return count;
|
|
/* re-arm interrupts, must write to rx tail on some chip variants */
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_AUTO_SET)
|
rx_tail_flags |= RX_TAIL_SET_TOP_INT_VEC_EN_;
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_SET) {
|
rx_tail_flags |= RX_TAIL_SET_TOP_INT_EN_;
|
} else {
|
lan743x_csr_write(adapter, INT_EN_SET,
|
INT_BIT_DMA_RX_(rx->channel_number));
|
}
|
|
if (rx_tail_flags)
|
lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
|
rx_tail_flags | rx->last_tail);
|
|
return count;
|
}
|
|
static void lan743x_rx_ring_cleanup(struct lan743x_rx *rx)
|
{
|
if (rx->buffer_info && rx->ring_cpu_ptr) {
|
int index;
|
|
for (index = 0; index < rx->ring_size; index++)
|
lan743x_rx_release_ring_element(rx, index);
|
}
|
|
if (rx->head_cpu_ptr) {
|
dma_free_coherent(&rx->adapter->pdev->dev,
|
sizeof(*rx->head_cpu_ptr), rx->head_cpu_ptr,
|
rx->head_dma_ptr);
|
rx->head_cpu_ptr = NULL;
|
rx->head_dma_ptr = 0;
|
}
|
|
kfree(rx->buffer_info);
|
rx->buffer_info = NULL;
|
|
if (rx->ring_cpu_ptr) {
|
dma_free_coherent(&rx->adapter->pdev->dev,
|
rx->ring_allocation_size, rx->ring_cpu_ptr,
|
rx->ring_dma_ptr);
|
rx->ring_allocation_size = 0;
|
rx->ring_cpu_ptr = NULL;
|
rx->ring_dma_ptr = 0;
|
}
|
|
rx->ring_size = 0;
|
rx->last_head = 0;
|
}
|
|
static int lan743x_rx_ring_init(struct lan743x_rx *rx)
|
{
|
size_t ring_allocation_size = 0;
|
dma_addr_t dma_ptr = 0;
|
void *cpu_ptr = NULL;
|
int ret = -ENOMEM;
|
int index = 0;
|
|
rx->ring_size = LAN743X_RX_RING_SIZE;
|
if (rx->ring_size <= 1) {
|
ret = -EINVAL;
|
goto cleanup;
|
}
|
if (rx->ring_size & ~RX_CFG_B_RX_RING_LEN_MASK_) {
|
ret = -EINVAL;
|
goto cleanup;
|
}
|
if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
|
DMA_BIT_MASK(64))) {
|
if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
|
DMA_BIT_MASK(32))) {
|
dev_warn(&rx->adapter->pdev->dev,
|
"lan743x_: No suitable DMA available\n");
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
}
|
ring_allocation_size = ALIGN(rx->ring_size *
|
sizeof(struct lan743x_rx_descriptor),
|
PAGE_SIZE);
|
dma_ptr = 0;
|
cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
|
ring_allocation_size, &dma_ptr, GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
rx->ring_allocation_size = ring_allocation_size;
|
rx->ring_cpu_ptr = (struct lan743x_rx_descriptor *)cpu_ptr;
|
rx->ring_dma_ptr = dma_ptr;
|
|
cpu_ptr = kcalloc(rx->ring_size, sizeof(*rx->buffer_info),
|
GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
rx->buffer_info = (struct lan743x_rx_buffer_info *)cpu_ptr;
|
dma_ptr = 0;
|
cpu_ptr = dma_alloc_coherent(&rx->adapter->pdev->dev,
|
sizeof(*rx->head_cpu_ptr), &dma_ptr,
|
GFP_KERNEL);
|
if (!cpu_ptr) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
|
rx->head_cpu_ptr = cpu_ptr;
|
rx->head_dma_ptr = dma_ptr;
|
if (rx->head_dma_ptr & 0x3) {
|
ret = -ENOMEM;
|
goto cleanup;
|
}
|
|
rx->last_head = 0;
|
for (index = 0; index < rx->ring_size; index++) {
|
struct sk_buff *new_skb = lan743x_rx_allocate_skb(rx,
|
GFP_KERNEL);
|
|
ret = lan743x_rx_init_ring_element(rx, index, new_skb);
|
if (ret)
|
goto cleanup;
|
}
|
return 0;
|
|
cleanup:
|
lan743x_rx_ring_cleanup(rx);
|
return ret;
|
}
|
|
static void lan743x_rx_close(struct lan743x_rx *rx)
|
{
|
struct lan743x_adapter *adapter = rx->adapter;
|
|
lan743x_csr_write(adapter, FCT_RX_CTL,
|
FCT_RX_CTL_DIS_(rx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
|
FCT_RX_CTL_EN_(rx->channel_number),
|
0, 1000, 20000, 100);
|
|
lan743x_csr_write(adapter, DMAC_CMD,
|
DMAC_CMD_STOP_R_(rx->channel_number));
|
lan743x_dmac_rx_wait_till_stopped(adapter, rx->channel_number);
|
|
lan743x_csr_write(adapter, DMAC_INT_EN_CLR,
|
DMAC_INT_BIT_RXFRM_(rx->channel_number));
|
lan743x_csr_write(adapter, INT_EN_CLR,
|
INT_BIT_DMA_RX_(rx->channel_number));
|
napi_disable(&rx->napi);
|
|
netif_napi_del(&rx->napi);
|
|
lan743x_rx_ring_cleanup(rx);
|
}
|
|
static int lan743x_rx_open(struct lan743x_rx *rx)
|
{
|
struct lan743x_adapter *adapter = rx->adapter;
|
u32 data = 0;
|
int ret;
|
|
rx->frame_count = 0;
|
ret = lan743x_rx_ring_init(rx);
|
if (ret)
|
goto return_error;
|
|
netif_napi_add(adapter->netdev,
|
&rx->napi, lan743x_rx_napi_poll,
|
NAPI_POLL_WEIGHT);
|
|
lan743x_csr_write(adapter, DMAC_CMD,
|
DMAC_CMD_RX_SWR_(rx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, DMAC_CMD,
|
DMAC_CMD_RX_SWR_(rx->channel_number),
|
0, 1000, 20000, 100);
|
|
/* set ring base address */
|
lan743x_csr_write(adapter,
|
RX_BASE_ADDRH(rx->channel_number),
|
DMA_ADDR_HIGH32(rx->ring_dma_ptr));
|
lan743x_csr_write(adapter,
|
RX_BASE_ADDRL(rx->channel_number),
|
DMA_ADDR_LOW32(rx->ring_dma_ptr));
|
|
/* set rx write back address */
|
lan743x_csr_write(adapter,
|
RX_HEAD_WRITEBACK_ADDRH(rx->channel_number),
|
DMA_ADDR_HIGH32(rx->head_dma_ptr));
|
lan743x_csr_write(adapter,
|
RX_HEAD_WRITEBACK_ADDRL(rx->channel_number),
|
DMA_ADDR_LOW32(rx->head_dma_ptr));
|
data = RX_CFG_A_RX_HP_WB_EN_;
|
if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0)) {
|
data |= (RX_CFG_A_RX_WB_ON_INT_TMR_ |
|
RX_CFG_A_RX_WB_THRES_SET_(0x7) |
|
RX_CFG_A_RX_PF_THRES_SET_(16) |
|
RX_CFG_A_RX_PF_PRI_THRES_SET_(4));
|
}
|
|
/* set RX_CFG_A */
|
lan743x_csr_write(adapter,
|
RX_CFG_A(rx->channel_number), data);
|
|
/* set RX_CFG_B */
|
data = lan743x_csr_read(adapter, RX_CFG_B(rx->channel_number));
|
data &= ~RX_CFG_B_RX_PAD_MASK_;
|
if (!RX_HEAD_PADDING)
|
data |= RX_CFG_B_RX_PAD_0_;
|
else
|
data |= RX_CFG_B_RX_PAD_2_;
|
data &= ~RX_CFG_B_RX_RING_LEN_MASK_;
|
data |= ((rx->ring_size) & RX_CFG_B_RX_RING_LEN_MASK_);
|
data |= RX_CFG_B_TS_ALL_RX_;
|
if (!(adapter->csr.flags & LAN743X_CSR_FLAG_IS_A0))
|
data |= RX_CFG_B_RDMABL_512_;
|
|
lan743x_csr_write(adapter, RX_CFG_B(rx->channel_number), data);
|
rx->vector_flags = lan743x_intr_get_vector_flags(adapter,
|
INT_BIT_DMA_RX_
|
(rx->channel_number));
|
|
/* set RX_CFG_C */
|
data = 0;
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_AUTO_CLEAR)
|
data |= RX_CFG_C_RX_TOP_INT_EN_AUTO_CLR_;
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_AUTO_CLEAR)
|
data |= RX_CFG_C_RX_DMA_INT_STS_AUTO_CLR_;
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C)
|
data |= RX_CFG_C_RX_INT_STS_R2C_MODE_MASK_;
|
if (rx->vector_flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)
|
data |= RX_CFG_C_RX_INT_EN_R2C_;
|
lan743x_csr_write(adapter, RX_CFG_C(rx->channel_number), data);
|
|
rx->last_tail = ((u32)(rx->ring_size - 1));
|
lan743x_csr_write(adapter, RX_TAIL(rx->channel_number),
|
rx->last_tail);
|
rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));
|
if (rx->last_head) {
|
ret = -EIO;
|
goto napi_delete;
|
}
|
|
napi_enable(&rx->napi);
|
|
lan743x_csr_write(adapter, INT_EN_SET,
|
INT_BIT_DMA_RX_(rx->channel_number));
|
lan743x_csr_write(adapter, DMAC_INT_STS,
|
DMAC_INT_BIT_RXFRM_(rx->channel_number));
|
lan743x_csr_write(adapter, DMAC_INT_EN_SET,
|
DMAC_INT_BIT_RXFRM_(rx->channel_number));
|
lan743x_csr_write(adapter, DMAC_CMD,
|
DMAC_CMD_START_R_(rx->channel_number));
|
|
/* initialize fifo */
|
lan743x_csr_write(adapter, FCT_RX_CTL,
|
FCT_RX_CTL_RESET_(rx->channel_number));
|
lan743x_csr_wait_for_bit(adapter, FCT_RX_CTL,
|
FCT_RX_CTL_RESET_(rx->channel_number),
|
0, 1000, 20000, 100);
|
lan743x_csr_write(adapter, FCT_FLOW(rx->channel_number),
|
FCT_FLOW_CTL_REQ_EN_ |
|
FCT_FLOW_CTL_ON_THRESHOLD_SET_(0x2A) |
|
FCT_FLOW_CTL_OFF_THRESHOLD_SET_(0xA));
|
|
/* enable fifo */
|
lan743x_csr_write(adapter, FCT_RX_CTL,
|
FCT_RX_CTL_EN_(rx->channel_number));
|
return 0;
|
|
napi_delete:
|
netif_napi_del(&rx->napi);
|
lan743x_rx_ring_cleanup(rx);
|
|
return_error:
|
return ret;
|
}
|
|
static int lan743x_netdev_close(struct net_device *netdev)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
int index;
|
|
lan743x_tx_close(&adapter->tx[0]);
|
|
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++)
|
lan743x_rx_close(&adapter->rx[index]);
|
|
lan743x_ptp_close(adapter);
|
|
lan743x_phy_close(adapter);
|
|
lan743x_mac_close(adapter);
|
|
lan743x_intr_close(adapter);
|
|
return 0;
|
}
|
|
static int lan743x_netdev_open(struct net_device *netdev)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
int index;
|
int ret;
|
|
ret = lan743x_intr_open(adapter);
|
if (ret)
|
goto return_error;
|
|
ret = lan743x_mac_open(adapter);
|
if (ret)
|
goto close_intr;
|
|
ret = lan743x_phy_open(adapter);
|
if (ret)
|
goto close_mac;
|
|
ret = lan743x_ptp_open(adapter);
|
if (ret)
|
goto close_phy;
|
|
lan743x_rfe_open(adapter);
|
|
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
|
ret = lan743x_rx_open(&adapter->rx[index]);
|
if (ret)
|
goto close_rx;
|
}
|
|
ret = lan743x_tx_open(&adapter->tx[0]);
|
if (ret)
|
goto close_rx;
|
|
return 0;
|
|
close_rx:
|
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
|
if (adapter->rx[index].ring_cpu_ptr)
|
lan743x_rx_close(&adapter->rx[index]);
|
}
|
lan743x_ptp_close(adapter);
|
|
close_phy:
|
lan743x_phy_close(adapter);
|
|
close_mac:
|
lan743x_mac_close(adapter);
|
|
close_intr:
|
lan743x_intr_close(adapter);
|
|
return_error:
|
netif_warn(adapter, ifup, adapter->netdev,
|
"Error opening LAN743x\n");
|
return ret;
|
}
|
|
static netdev_tx_t lan743x_netdev_xmit_frame(struct sk_buff *skb,
|
struct net_device *netdev)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
return lan743x_tx_xmit_frame(&adapter->tx[0], skb);
|
}
|
|
static int lan743x_netdev_ioctl(struct net_device *netdev,
|
struct ifreq *ifr, int cmd)
|
{
|
if (!netif_running(netdev))
|
return -EINVAL;
|
if (cmd == SIOCSHWTSTAMP)
|
return lan743x_ptp_ioctl(netdev, ifr, cmd);
|
return phy_mii_ioctl(netdev->phydev, ifr, cmd);
|
}
|
|
static void lan743x_netdev_set_multicast(struct net_device *netdev)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
lan743x_rfe_set_multicast(adapter);
|
}
|
|
static int lan743x_netdev_change_mtu(struct net_device *netdev, int new_mtu)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
int ret = 0;
|
|
ret = lan743x_mac_set_mtu(adapter, new_mtu);
|
if (!ret)
|
netdev->mtu = new_mtu;
|
return ret;
|
}
|
|
static void lan743x_netdev_get_stats64(struct net_device *netdev,
|
struct rtnl_link_stats64 *stats)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
stats->rx_packets = lan743x_csr_read(adapter, STAT_RX_TOTAL_FRAMES);
|
stats->tx_packets = lan743x_csr_read(adapter, STAT_TX_TOTAL_FRAMES);
|
stats->rx_bytes = lan743x_csr_read(adapter,
|
STAT_RX_UNICAST_BYTE_COUNT) +
|
lan743x_csr_read(adapter,
|
STAT_RX_BROADCAST_BYTE_COUNT) +
|
lan743x_csr_read(adapter,
|
STAT_RX_MULTICAST_BYTE_COUNT);
|
stats->tx_bytes = lan743x_csr_read(adapter,
|
STAT_TX_UNICAST_BYTE_COUNT) +
|
lan743x_csr_read(adapter,
|
STAT_TX_BROADCAST_BYTE_COUNT) +
|
lan743x_csr_read(adapter,
|
STAT_TX_MULTICAST_BYTE_COUNT);
|
stats->rx_errors = lan743x_csr_read(adapter, STAT_RX_FCS_ERRORS) +
|
lan743x_csr_read(adapter,
|
STAT_RX_ALIGNMENT_ERRORS) +
|
lan743x_csr_read(adapter, STAT_RX_JABBER_ERRORS) +
|
lan743x_csr_read(adapter,
|
STAT_RX_UNDERSIZE_FRAME_ERRORS) +
|
lan743x_csr_read(adapter,
|
STAT_RX_OVERSIZE_FRAME_ERRORS);
|
stats->tx_errors = lan743x_csr_read(adapter, STAT_TX_FCS_ERRORS) +
|
lan743x_csr_read(adapter,
|
STAT_TX_EXCESS_DEFERRAL_ERRORS) +
|
lan743x_csr_read(adapter, STAT_TX_CARRIER_ERRORS);
|
stats->rx_dropped = lan743x_csr_read(adapter,
|
STAT_RX_DROPPED_FRAMES);
|
stats->tx_dropped = lan743x_csr_read(adapter,
|
STAT_TX_EXCESSIVE_COLLISION);
|
stats->multicast = lan743x_csr_read(adapter,
|
STAT_RX_MULTICAST_FRAMES) +
|
lan743x_csr_read(adapter,
|
STAT_TX_MULTICAST_FRAMES);
|
stats->collisions = lan743x_csr_read(adapter,
|
STAT_TX_SINGLE_COLLISIONS) +
|
lan743x_csr_read(adapter,
|
STAT_TX_MULTIPLE_COLLISIONS) +
|
lan743x_csr_read(adapter,
|
STAT_TX_LATE_COLLISIONS);
|
}
|
|
static int lan743x_netdev_set_mac_address(struct net_device *netdev,
|
void *addr)
|
{
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
struct sockaddr *sock_addr = addr;
|
int ret;
|
|
ret = eth_prepare_mac_addr_change(netdev, sock_addr);
|
if (ret)
|
return ret;
|
ether_addr_copy(netdev->dev_addr, sock_addr->sa_data);
|
lan743x_mac_set_address(adapter, sock_addr->sa_data);
|
lan743x_rfe_update_mac_address(adapter);
|
return 0;
|
}
|
|
static const struct net_device_ops lan743x_netdev_ops = {
|
.ndo_open = lan743x_netdev_open,
|
.ndo_stop = lan743x_netdev_close,
|
.ndo_start_xmit = lan743x_netdev_xmit_frame,
|
.ndo_do_ioctl = lan743x_netdev_ioctl,
|
.ndo_set_rx_mode = lan743x_netdev_set_multicast,
|
.ndo_change_mtu = lan743x_netdev_change_mtu,
|
.ndo_get_stats64 = lan743x_netdev_get_stats64,
|
.ndo_set_mac_address = lan743x_netdev_set_mac_address,
|
};
|
|
static void lan743x_hardware_cleanup(struct lan743x_adapter *adapter)
|
{
|
lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
|
}
|
|
static void lan743x_mdiobus_cleanup(struct lan743x_adapter *adapter)
|
{
|
mdiobus_unregister(adapter->mdiobus);
|
}
|
|
static void lan743x_full_cleanup(struct lan743x_adapter *adapter)
|
{
|
unregister_netdev(adapter->netdev);
|
|
lan743x_mdiobus_cleanup(adapter);
|
lan743x_hardware_cleanup(adapter);
|
lan743x_pci_cleanup(adapter);
|
}
|
|
static int lan743x_hardware_init(struct lan743x_adapter *adapter,
|
struct pci_dev *pdev)
|
{
|
struct lan743x_tx *tx;
|
int index;
|
int ret;
|
|
adapter->intr.irq = adapter->pdev->irq;
|
lan743x_csr_write(adapter, INT_EN_CLR, 0xFFFFFFFF);
|
|
ret = lan743x_gpio_init(adapter);
|
if (ret)
|
return ret;
|
|
ret = lan743x_mac_init(adapter);
|
if (ret)
|
return ret;
|
|
ret = lan743x_phy_init(adapter);
|
if (ret)
|
return ret;
|
|
ret = lan743x_ptp_init(adapter);
|
if (ret)
|
return ret;
|
|
lan743x_rfe_update_mac_address(adapter);
|
|
ret = lan743x_dmac_init(adapter);
|
if (ret)
|
return ret;
|
|
for (index = 0; index < LAN743X_USED_RX_CHANNELS; index++) {
|
adapter->rx[index].adapter = adapter;
|
adapter->rx[index].channel_number = index;
|
}
|
|
tx = &adapter->tx[0];
|
tx->adapter = adapter;
|
tx->channel_number = 0;
|
spin_lock_init(&tx->ring_lock);
|
return 0;
|
}
|
|
static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
|
{
|
int ret;
|
|
adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
|
if (!(adapter->mdiobus)) {
|
ret = -ENOMEM;
|
goto return_error;
|
}
|
|
adapter->mdiobus->priv = (void *)adapter;
|
adapter->mdiobus->read = lan743x_mdiobus_read;
|
adapter->mdiobus->write = lan743x_mdiobus_write;
|
adapter->mdiobus->name = "lan743x-mdiobus";
|
snprintf(adapter->mdiobus->id, MII_BUS_ID_SIZE,
|
"pci-%s", pci_name(adapter->pdev));
|
|
if ((adapter->csr.id_rev & ID_REV_ID_MASK_) == ID_REV_ID_LAN7430_)
|
/* LAN7430 uses internal phy at address 1 */
|
adapter->mdiobus->phy_mask = ~(u32)BIT(1);
|
|
/* register mdiobus */
|
ret = mdiobus_register(adapter->mdiobus);
|
if (ret < 0)
|
goto return_error;
|
return 0;
|
|
return_error:
|
return ret;
|
}
|
|
/* lan743x_pcidev_probe - Device Initialization Routine
|
* @pdev: PCI device information struct
|
* @id: entry in lan743x_pci_tbl
|
*
|
* Returns 0 on success, negative on failure
|
*
|
* initializes an adapter identified by a pci_dev structure.
|
* The OS initialization, configuring of the adapter private structure,
|
* and a hardware reset occur.
|
**/
|
static int lan743x_pcidev_probe(struct pci_dev *pdev,
|
const struct pci_device_id *id)
|
{
|
struct lan743x_adapter *adapter = NULL;
|
struct net_device *netdev = NULL;
|
const void *mac_addr;
|
int ret = -ENODEV;
|
|
netdev = devm_alloc_etherdev(&pdev->dev,
|
sizeof(struct lan743x_adapter));
|
if (!netdev)
|
goto return_error;
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
pci_set_drvdata(pdev, netdev);
|
adapter = netdev_priv(netdev);
|
adapter->netdev = netdev;
|
adapter->msg_enable = NETIF_MSG_DRV | NETIF_MSG_PROBE |
|
NETIF_MSG_LINK | NETIF_MSG_IFUP |
|
NETIF_MSG_IFDOWN | NETIF_MSG_TX_QUEUED;
|
netdev->max_mtu = LAN743X_MAX_FRAME_SIZE;
|
|
mac_addr = of_get_mac_address(pdev->dev.of_node);
|
if (!IS_ERR(mac_addr))
|
ether_addr_copy(adapter->mac_address, mac_addr);
|
|
ret = lan743x_pci_init(adapter, pdev);
|
if (ret)
|
goto return_error;
|
|
ret = lan743x_csr_init(adapter);
|
if (ret)
|
goto cleanup_pci;
|
|
ret = lan743x_hardware_init(adapter, pdev);
|
if (ret)
|
goto cleanup_pci;
|
|
ret = lan743x_mdiobus_init(adapter);
|
if (ret)
|
goto cleanup_hardware;
|
|
adapter->netdev->netdev_ops = &lan743x_netdev_ops;
|
adapter->netdev->ethtool_ops = &lan743x_ethtool_ops;
|
adapter->netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
|
adapter->netdev->hw_features = adapter->netdev->features;
|
|
/* carrier off reporting is important to ethtool even BEFORE open */
|
netif_carrier_off(netdev);
|
|
ret = register_netdev(adapter->netdev);
|
if (ret < 0)
|
goto cleanup_mdiobus;
|
return 0;
|
|
cleanup_mdiobus:
|
lan743x_mdiobus_cleanup(adapter);
|
|
cleanup_hardware:
|
lan743x_hardware_cleanup(adapter);
|
|
cleanup_pci:
|
lan743x_pci_cleanup(adapter);
|
|
return_error:
|
pr_warn("Initialization failed\n");
|
return ret;
|
}
|
|
/**
|
* lan743x_pcidev_remove - Device Removal Routine
|
* @pdev: PCI device information struct
|
*
|
* this is called by the PCI subsystem to alert the driver
|
* that it should release a PCI device. This could be caused by a
|
* Hot-Plug event, or because the driver is going to be removed from
|
* memory.
|
**/
|
static void lan743x_pcidev_remove(struct pci_dev *pdev)
|
{
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
lan743x_full_cleanup(adapter);
|
}
|
|
static void lan743x_pcidev_shutdown(struct pci_dev *pdev)
|
{
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
rtnl_lock();
|
netif_device_detach(netdev);
|
|
/* close netdev when netdev is at running state.
|
* For instance, it is true when system goes to sleep by pm-suspend
|
* However, it is false when system goes to sleep by suspend GUI menu
|
*/
|
if (netif_running(netdev))
|
lan743x_netdev_close(netdev);
|
rtnl_unlock();
|
|
#ifdef CONFIG_PM
|
pci_save_state(pdev);
|
#endif
|
|
/* clean up lan743x portion */
|
lan743x_hardware_cleanup(adapter);
|
}
|
|
#ifdef CONFIG_PM_SLEEP
|
static u16 lan743x_pm_wakeframe_crc16(const u8 *buf, int len)
|
{
|
return bitrev16(crc16(0xFFFF, buf, len));
|
}
|
|
static void lan743x_pm_set_wol(struct lan743x_adapter *adapter)
|
{
|
const u8 ipv4_multicast[3] = { 0x01, 0x00, 0x5E };
|
const u8 ipv6_multicast[3] = { 0x33, 0x33 };
|
const u8 arp_type[2] = { 0x08, 0x06 };
|
int mask_index;
|
u32 pmtctl;
|
u32 wucsr;
|
u32 macrx;
|
u16 crc;
|
|
for (mask_index = 0; mask_index < MAC_NUM_OF_WUF_CFG; mask_index++)
|
lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index), 0);
|
|
/* clear wake settings */
|
pmtctl = lan743x_csr_read(adapter, PMT_CTL);
|
pmtctl |= PMT_CTL_WUPS_MASK_;
|
pmtctl &= ~(PMT_CTL_GPIO_WAKEUP_EN_ | PMT_CTL_EEE_WAKEUP_EN_ |
|
PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_ |
|
PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_ | PMT_CTL_ETH_PHY_WAKE_EN_);
|
|
macrx = lan743x_csr_read(adapter, MAC_RX);
|
|
wucsr = 0;
|
mask_index = 0;
|
|
pmtctl |= PMT_CTL_ETH_PHY_D3_COLD_OVR_ | PMT_CTL_ETH_PHY_D3_OVR_;
|
|
if (adapter->wolopts & WAKE_PHY) {
|
pmtctl |= PMT_CTL_ETH_PHY_EDPD_PLL_CTL_;
|
pmtctl |= PMT_CTL_ETH_PHY_WAKE_EN_;
|
}
|
if (adapter->wolopts & WAKE_MAGIC) {
|
wucsr |= MAC_WUCSR_MPEN_;
|
macrx |= MAC_RX_RXEN_;
|
pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
|
}
|
if (adapter->wolopts & WAKE_UCAST) {
|
wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_PFDA_EN_;
|
macrx |= MAC_RX_RXEN_;
|
pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
|
pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
|
}
|
if (adapter->wolopts & WAKE_BCAST) {
|
wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_BCST_EN_;
|
macrx |= MAC_RX_RXEN_;
|
pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
|
pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
|
}
|
if (adapter->wolopts & WAKE_MCAST) {
|
/* IPv4 multicast */
|
crc = lan743x_pm_wakeframe_crc16(ipv4_multicast, 3);
|
lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
|
MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
|
(0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
|
(crc & MAC_WUF_CFG_CRC16_MASK_));
|
lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 7);
|
lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
|
mask_index++;
|
|
/* IPv6 multicast */
|
crc = lan743x_pm_wakeframe_crc16(ipv6_multicast, 2);
|
lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
|
MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_MCAST_ |
|
(0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
|
(crc & MAC_WUF_CFG_CRC16_MASK_));
|
lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 3);
|
lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
|
mask_index++;
|
|
wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
|
macrx |= MAC_RX_RXEN_;
|
pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
|
pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
|
}
|
if (adapter->wolopts & WAKE_ARP) {
|
/* set MAC_WUF_CFG & WUF_MASK
|
* for packettype (offset 12,13) = ARP (0x0806)
|
*/
|
crc = lan743x_pm_wakeframe_crc16(arp_type, 2);
|
lan743x_csr_write(adapter, MAC_WUF_CFG(mask_index),
|
MAC_WUF_CFG_EN_ | MAC_WUF_CFG_TYPE_ALL_ |
|
(0 << MAC_WUF_CFG_OFFSET_SHIFT_) |
|
(crc & MAC_WUF_CFG_CRC16_MASK_));
|
lan743x_csr_write(adapter, MAC_WUF_MASK0(mask_index), 0x3000);
|
lan743x_csr_write(adapter, MAC_WUF_MASK1(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK2(mask_index), 0);
|
lan743x_csr_write(adapter, MAC_WUF_MASK3(mask_index), 0);
|
mask_index++;
|
|
wucsr |= MAC_WUCSR_RFE_WAKE_EN_ | MAC_WUCSR_WAKE_EN_;
|
macrx |= MAC_RX_RXEN_;
|
pmtctl |= PMT_CTL_WOL_EN_ | PMT_CTL_MAC_D3_RX_CLK_OVR_;
|
pmtctl |= PMT_CTL_RX_FCT_RFE_D3_CLK_OVR_;
|
}
|
|
lan743x_csr_write(adapter, MAC_WUCSR, wucsr);
|
lan743x_csr_write(adapter, PMT_CTL, pmtctl);
|
lan743x_csr_write(adapter, MAC_RX, macrx);
|
}
|
|
static int lan743x_pm_suspend(struct device *dev)
|
{
|
struct pci_dev *pdev = to_pci_dev(dev);
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
|
lan743x_pcidev_shutdown(pdev);
|
|
/* clear all wakes */
|
lan743x_csr_write(adapter, MAC_WUCSR, 0);
|
lan743x_csr_write(adapter, MAC_WUCSR2, 0);
|
lan743x_csr_write(adapter, MAC_WK_SRC, 0xFFFFFFFF);
|
|
if (adapter->wolopts)
|
lan743x_pm_set_wol(adapter);
|
|
/* Host sets PME_En, put D3hot */
|
return pci_prepare_to_sleep(pdev);;
|
}
|
|
static int lan743x_pm_resume(struct device *dev)
|
{
|
struct pci_dev *pdev = to_pci_dev(dev);
|
struct net_device *netdev = pci_get_drvdata(pdev);
|
struct lan743x_adapter *adapter = netdev_priv(netdev);
|
int ret;
|
|
pci_set_power_state(pdev, PCI_D0);
|
pci_restore_state(pdev);
|
pci_save_state(pdev);
|
|
ret = lan743x_hardware_init(adapter, pdev);
|
if (ret) {
|
netif_err(adapter, probe, adapter->netdev,
|
"lan743x_hardware_init returned %d\n", ret);
|
lan743x_pci_cleanup(adapter);
|
return ret;
|
}
|
|
/* open netdev when netdev is at running state while resume.
|
* For instance, it is true when system wakesup after pm-suspend
|
* However, it is false when system wakes up after suspend GUI menu
|
*/
|
if (netif_running(netdev))
|
lan743x_netdev_open(netdev);
|
|
netif_device_attach(netdev);
|
|
return 0;
|
}
|
|
static const struct dev_pm_ops lan743x_pm_ops = {
|
SET_SYSTEM_SLEEP_PM_OPS(lan743x_pm_suspend, lan743x_pm_resume)
|
};
|
#endif /* CONFIG_PM_SLEEP */
|
|
static const struct pci_device_id lan743x_pcidev_tbl[] = {
|
{ PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7430) },
|
{ PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_LAN7431) },
|
{ 0, }
|
};
|
|
MODULE_DEVICE_TABLE(pci, lan743x_pcidev_tbl);
|
|
static struct pci_driver lan743x_pcidev_driver = {
|
.name = DRIVER_NAME,
|
.id_table = lan743x_pcidev_tbl,
|
.probe = lan743x_pcidev_probe,
|
.remove = lan743x_pcidev_remove,
|
#ifdef CONFIG_PM_SLEEP
|
.driver.pm = &lan743x_pm_ops,
|
#endif
|
.shutdown = lan743x_pcidev_shutdown,
|
};
|
|
module_pci_driver(lan743x_pcidev_driver);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
MODULE_LICENSE("GPL");
|
