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linux-zen-server/drivers/net/ethernet/microchip/lan743x_main.c

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/* SPDX-License-Identifier: GPL-2.0+ */
/* Copyright (C) 2018 Microchip Technology Inc. */
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/crc32.h>
#include <linux/microchipphy.h>
#include <linux/net_tstamp.h>
#include <linux/of_mdio.h>
#include <linux/of_net.h>
#include <linux/phy.h>
#include <linux/phy_fixed.h>
#include <linux/rtnetlink.h>
#include <linux/iopoll.h>
#include <linux/crc16.h>
#include "lan743x_main.h"
#include "lan743x_ethtool.h"
#define MMD_ACCESS_ADDRESS 0
#define MMD_ACCESS_WRITE 1
#define MMD_ACCESS_READ 2
#define MMD_ACCESS_READ_INC 3
#define PCS_POWER_STATE_DOWN 0x6
#define PCS_POWER_STATE_UP 0x4
static void pci11x1x_strap_get_status(struct lan743x_adapter *adapter)
{
u32 chip_rev;
u32 cfg_load;
u32 hw_cfg;
u32 strap;
int ret;
/* Timeout = 100 (i.e. 1 sec (10 msce * 100)) */
ret = lan743x_hs_syslock_acquire(adapter, 100);
if (ret < 0) {
netif_err(adapter, drv, adapter->netdev,
"Sys Lock acquire failed ret:%d\n", ret);
return;
}
cfg_load = lan743x_csr_read(adapter, ETH_SYS_CONFIG_LOAD_STARTED_REG);
lan743x_hs_syslock_release(adapter);
hw_cfg = lan743x_csr_read(adapter, HW_CFG);
if (cfg_load & GEN_SYS_LOAD_STARTED_REG_ETH_ ||
hw_cfg & HW_CFG_RST_PROTECT_) {
strap = lan743x_csr_read(adapter, STRAP_READ);
if (strap & STRAP_READ_SGMII_EN_)
adapter->is_sgmii_en = true;
else
adapter->is_sgmii_en = false;
} else {
chip_rev = lan743x_csr_read(adapter, FPGA_REV);
if (chip_rev) {
if (chip_rev & FPGA_SGMII_OP)
adapter->is_sgmii_en = true;
else
adapter->is_sgmii_en = false;
} else {
adapter->is_sgmii_en = false;
}
}
netif_dbg(adapter, drv, adapter->netdev,
"SGMII I/F %sable\n", adapter->is_sgmii_en ? "En" : "Dis");
}
static bool is_pci11x1x_chip(struct lan743x_adapter *adapter)
{
struct lan743x_csr *csr = &adapter->csr;
u32 id_rev = csr->id_rev;
if (((id_rev & 0xFFFF0000) == ID_REV_ID_A011_) ||
((id_rev & 0xFFFF0000) == ID_REV_ID_A041_)) {
return true;
}
return false;
}
static void lan743x_pci_cleanup(struct lan743x_adapter *adapter)
{
pci_release_selected_regions(adapter->pdev,
pci_select_bars(adapter->pdev,
IORESOURCE_MEM));
pci_disable_device(adapter->pdev);
}
static int lan743x_pci_init(struct lan743x_adapter *adapter,
struct pci_dev *pdev)
{
unsigned long bars = 0;
int ret;
adapter->pdev = pdev;
ret = pci_enable_device_mem(pdev);
if (ret)
goto return_error;
netif_info(adapter, probe, adapter->netdev,
"PCI: Vendor ID = 0x%04X, Device ID = 0x%04X\n",
pdev->vendor, pdev->device);
bars = pci_select_bars(pdev, IORESOURCE_MEM);
if (!test_bit(0, &bars))
goto disable_device;
ret = pci_request_selected_regions(pdev, bars, DRIVER_NAME);
if (ret)
goto disable_device;
pci_set_master(pdev);
return 0;
disable_device:
pci_disable_device(adapter->pdev);
return_error:
return ret;
}
u32 lan743x_csr_read(struct lan743x_adapter *adapter, int offset)
{
return ioread32(&adapter->csr.csr_address[offset]);
}
void lan743x_csr_write(struct lan743x_adapter *adapter, int offset,
u32 data)
{
iowrite32(data, &adapter->csr.csr_address[offset]);
}
#define LAN743X_CSR_READ_OP(offset) lan743x_csr_read(adapter, offset)
static int lan743x_csr_light_reset(struct lan743x_adapter *adapter)
{
u32 data;
data = lan743x_csr_read(adapter, HW_CFG);
data |= HW_CFG_LRST_;
lan743x_csr_write(adapter, HW_CFG, data);
return readx_poll_timeout(LAN743X_CSR_READ_OP, HW_CFG, data,
!(data & HW_CFG_LRST_), 100000, 10000000);
}
static int lan743x_csr_wait_for_bit(struct lan743x_adapter *adapter,
int offset, u32 bit_mask,
int target_value, int usleep_min,
int usleep_max, int count)
{
u32 data;
return readx_poll_timeout(LAN743X_CSR_READ_OP, offset, data,
target_value == ((data & bit_mask) ? 1 : 0),
usleep_max, usleep_min * count);
}
static int lan743x_csr_init(struct lan743x_adapter *adapter)
{
struct lan743x_csr *csr = &adapter->csr;
resource_size_t bar_start, bar_length;
int result;
bar_start = pci_resource_start(adapter->pdev, 0);
bar_length = pci_resource_len(adapter->pdev, 0);
csr->csr_address = devm_ioremap(&adapter->pdev->dev,
bar_start, bar_length);
if (!csr->csr_address) {
result = -ENOMEM;
goto clean_up;
}
csr->id_rev = lan743x_csr_read(adapter, ID_REV);
csr->fpga_rev = lan743x_csr_read(adapter, FPGA_REV);
netif_info(adapter, probe, adapter->netdev,
"ID_REV = 0x%08X, FPGA_REV = %d.%d\n",
csr->id_rev, FPGA_REV_GET_MAJOR_(csr->fpga_rev),
FPGA_REV_GET_MINOR_(csr->fpga_rev));
if (!ID_REV_IS_VALID_CHIP_ID_(csr->id_rev)) {
result = -ENODEV;
goto clean_up;
}
csr->flags = LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
switch (csr->id_rev & ID_REV_CHIP_REV_MASK_) {
case ID_REV_CHIP_REV_A0_:
csr->flags |= LAN743X_CSR_FLAG_IS_A0;
csr->flags &= ~LAN743X_CSR_FLAG_SUPPORTS_INTR_AUTO_SET_CLR;
break;
case ID_REV_CHIP_REV_B0_:
csr->flags |= LAN743X_CSR_FLAG_IS_B0;
break;
}
result = lan743x_csr_light_reset(adapter);
if (result)
goto clean_up;
return 0;
clean_up:
return result;
}
static void lan743x_intr_software_isr(struct lan743x_adapter *adapter)
{
struct lan743x_intr *intr = &adapter->intr;
/* disable the interrupt to prevent repeated re-triggering */
lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
intr->software_isr_flag = true;
wake_up(&intr->software_isr_wq);
}
static void lan743x_tx_isr(void *context, u32 int_sts, u32 flags)
{
struct lan743x_tx *tx = context;
struct lan743x_adapter *adapter = tx->adapter;
bool enable_flag = true;
lan743x_csr_read(adapter, INT_EN_SET);
if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
lan743x_csr_write(adapter, INT_EN_CLR,
INT_BIT_DMA_TX_(tx->channel_number));
}
if (int_sts & INT_BIT_DMA_TX_(tx->channel_number)) {
u32 ioc_bit = DMAC_INT_BIT_TX_IOC_(tx->channel_number);
u32 dmac_int_sts;
u32 dmac_int_en;
if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
else
dmac_int_sts = ioc_bit;
if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
dmac_int_en = lan743x_csr_read(adapter,
DMAC_INT_EN_SET);
else
dmac_int_en = ioc_bit;
dmac_int_en &= ioc_bit;
dmac_int_sts &= dmac_int_en;
if (dmac_int_sts & ioc_bit) {
napi_schedule(&tx->napi);
enable_flag = false;/* poll func will enable later */
}
}
if (enable_flag)
/* enable isr */
lan743x_csr_write(adapter, INT_EN_SET,
INT_BIT_DMA_TX_(tx->channel_number));
}
static void lan743x_rx_isr(void *context, u32 int_sts, u32 flags)
{
struct lan743x_rx *rx = context;
struct lan743x_adapter *adapter = rx->adapter;
bool enable_flag = true;
if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CLEAR) {
lan743x_csr_write(adapter, INT_EN_CLR,
INT_BIT_DMA_RX_(rx->channel_number));
}
if (int_sts & INT_BIT_DMA_RX_(rx->channel_number)) {
u32 rx_frame_bit = DMAC_INT_BIT_RXFRM_(rx->channel_number);
u32 dmac_int_sts;
u32 dmac_int_en;
if (flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ)
dmac_int_sts = lan743x_csr_read(adapter, DMAC_INT_STS);
else
dmac_int_sts = rx_frame_bit;
if (flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK)
dmac_int_en = lan743x_csr_read(adapter,
DMAC_INT_EN_SET);
else
dmac_int_en = rx_frame_bit;
dmac_int_en &= rx_frame_bit;
dmac_int_sts &= dmac_int_en;
if (dmac_int_sts & rx_frame_bit) {
napi_schedule(&rx->napi);
enable_flag = false;/* poll funct will enable later */
}
}
if (enable_flag) {
/* enable isr */
lan743x_csr_write(adapter, INT_EN_SET,
INT_BIT_DMA_RX_(rx->channel_number));
}
}
static void lan743x_intr_shared_isr(void *context, u32 int_sts, u32 flags)
{
struct lan743x_adapter *adapter = context;
unsigned int channel;
if (int_sts & INT_BIT_ALL_RX_) {
for (channel = 0; channel < LAN743X_USED_RX_CHANNELS;
channel++) {
u32 int_bit = INT_BIT_DMA_RX_(channel);
if (int_sts & int_bit) {
lan743x_rx_isr(&adapter->rx[channel],
int_bit, flags);
int_sts &= ~int_bit;
}
}
}
if (int_sts & INT_BIT_ALL_TX_) {
for (channel = 0; channel < adapter->used_tx_channels;
channel++) {
u32 int_bit = INT_BIT_DMA_TX_(channel);
if (int_sts & int_bit) {
lan743x_tx_isr(&adapter->tx[channel],
int_bit, flags);
int_sts &= ~int_bit;
}
}
}
if (int_sts & INT_BIT_ALL_OTHER_) {
if (int_sts & INT_BIT_SW_GP_) {
lan743x_intr_software_isr(adapter);
int_sts &= ~INT_BIT_SW_GP_;
}
if (int_sts & INT_BIT_1588_) {
lan743x_ptp_isr(adapter);
int_sts &= ~INT_BIT_1588_;
}
}
if (int_sts)
lan743x_csr_write(adapter, INT_EN_CLR, int_sts);
}
static irqreturn_t lan743x_intr_entry_isr(int irq, void *ptr)
{
struct lan743x_vector *vector = ptr;
struct lan743x_adapter *adapter = vector->adapter;
irqreturn_t result = IRQ_NONE;
u32 int_enables;
u32 int_sts;
if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_STATUS_READ) {
int_sts = lan743x_csr_read(adapter, INT_STS);
} else if (vector->flags &
(LAN743X_VECTOR_FLAG_SOURCE_STATUS_R2C |
LAN743X_VECTOR_FLAG_SOURCE_ENABLE_R2C)) {
int_sts = lan743x_csr_read(adapter, INT_STS_R2C);
} else {
/* use mask as implied status */
int_sts = vector->int_mask | INT_BIT_MAS_;
}
if (!(int_sts & INT_BIT_MAS_))
goto irq_done;
if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_CLEAR)
/* disable vector interrupt */
lan743x_csr_write(adapter,
INT_VEC_EN_CLR,
INT_VEC_EN_(vector->vector_index));
if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_CLEAR)
/* disable master interrupt */
lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_MAS_);
if (vector->flags & LAN743X_VECTOR_FLAG_SOURCE_ENABLE_CHECK) {
int_enables = lan743x_csr_read(adapter, INT_EN_SET);
} else {
/* use vector mask as implied enable mask */
int_enables = vector->int_mask;
}
int_sts &= int_enables;
int_sts &= vector->int_mask;
if (int_sts) {
if (vector->handler) {
vector->handler(vector->context,
int_sts, vector->flags);
} else {
/* disable interrupts on this vector */
lan743x_csr_write(adapter, INT_EN_CLR,
vector->int_mask);
}
result = IRQ_HANDLED;
}
if (vector->flags & LAN743X_VECTOR_FLAG_MASTER_ENABLE_SET)
/* enable master interrupt */
lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_MAS_);
if (vector->flags & LAN743X_VECTOR_FLAG_VECTOR_ENABLE_ISR_SET)
/* enable vector interrupt */
lan743x_csr_write(adapter,
INT_VEC_EN_SET,
INT_VEC_EN_(vector->vector_index));
irq_done:
return result;
}
static int lan743x_intr_test_isr(struct lan743x_adapter *adapter)
{
struct lan743x_intr *intr = &adapter->intr;
int ret;
intr->software_isr_flag = false;
/* enable and activate test interrupt */
lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_SW_GP_);
lan743x_csr_write(adapter, INT_SET, INT_BIT_SW_GP_);
ret = wait_event_timeout(intr->software_isr_wq,
intr->software_isr_flag,
msecs_to_jiffies(200));
/* disable test interrupt */
lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_SW_GP_);
return ret > 0 ? 0 : -ENODEV;
}
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 < adapter->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_);
if (adapter->is_pci11x1x)
lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x0000FFFF);
else
lan743x_csr_write(adapter, INT_VEC_EN_CLR, 0x000000FF);
for (index = 0; index < intr->number_of_vectors; 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[PCI11X1X_MAX_VECTOR_COUNT];
struct lan743x_intr *intr = &adapter->intr;
unsigned int used_tx_channels;
u32 int_vec_en_auto_clr = 0;
u8 max_vector_count;
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 */
max_vector_count = adapter->max_vector_count;
memset(&msix_entries[0], 0,
sizeof(struct msix_entry) * max_vector_count);
for (index = 0; index < max_vector_count; index++)
msix_entries[index].entry = index;
used_tx_channels = adapter->used_tx_channels;
ret = pci_enable_msix_range(adapter->pdev,
msix_entries, 1,
1 + 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;
}
init_waitqueue_head(&intr->software_isr_wq);
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);
if (adapter->is_pci11x1x) {
lan743x_csr_write(adapter, INT_MOD_CFG8, LAN743X_INT_MOD);
lan743x_csr_write(adapter, INT_MOD_CFG9, LAN743X_INT_MOD);
lan743x_csr_write(adapter, INT_MOD_MAP0, 0x00007654);
lan743x_csr_write(adapter, INT_MOD_MAP1, 0x00003210);
} else {
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 > used_tx_channels)
number_of_tx_vectors = 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 - used_tx_channels) > 1) {
int number_of_rx_vectors = intr->number_of_vectors -
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 + 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_c22(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_c22(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 u32 lan743x_mac_mmd_access(int id, int dev_addr, int op)
{
u32 ret;
ret = (id << MAC_MII_ACC_PHY_ADDR_SHIFT_) &
MAC_MII_ACC_PHY_ADDR_MASK_;
ret |= (dev_addr << MAC_MII_ACC_MIIMMD_SHIFT_) &
MAC_MII_ACC_MIIMMD_MASK_;
if (op == MMD_ACCESS_WRITE)
ret |= MAC_MII_ACC_MIICMD_WRITE_;
else if (op == MMD_ACCESS_READ)
ret |= MAC_MII_ACC_MIICMD_READ_;
else if (op == MMD_ACCESS_READ_INC)
ret |= MAC_MII_ACC_MIICMD_READ_INC_;
else
ret |= MAC_MII_ACC_MIICMD_ADDR_;
ret |= (MAC_MII_ACC_MII_BUSY_ | MAC_MII_ACC_MIICL45_);
return ret;
}
static int lan743x_mdiobus_read_c45(struct mii_bus *bus, int phy_id,
int dev_addr, int index)
{
struct lan743x_adapter *adapter = bus->priv;
u32 mmd_access;
int ret;
/* comfirm MII not busy */
ret = lan743x_mac_mii_wait_till_not_busy(adapter);
if (ret < 0)
return ret;
/* Load Register Address */
lan743x_csr_write(adapter, MAC_MII_DATA, index);
mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
MMD_ACCESS_ADDRESS);
lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
ret = lan743x_mac_mii_wait_till_not_busy(adapter);
if (ret < 0)
return ret;
/* Read Data */
mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
MMD_ACCESS_READ);
lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
ret = lan743x_mac_mii_wait_till_not_busy(adapter);
if (ret < 0)
return ret;
ret = lan743x_csr_read(adapter, MAC_MII_DATA);
return (int)(ret & 0xFFFF);
}
static int lan743x_mdiobus_write_c45(struct mii_bus *bus, int phy_id,
int dev_addr, int index, u16 regval)
{
struct lan743x_adapter *adapter = bus->priv;
u32 mmd_access;
int ret;
/* confirm MII not busy */
ret = lan743x_mac_mii_wait_till_not_busy(adapter);
if (ret < 0)
return ret;
/* Load Register Address */
lan743x_csr_write(adapter, MAC_MII_DATA, (u32)index);
mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
MMD_ACCESS_ADDRESS);
lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
ret = lan743x_mac_mii_wait_till_not_busy(adapter);
if (ret < 0)
return ret;
/* Write Data */
lan743x_csr_write(adapter, MAC_MII_DATA, (u32)regval);
mmd_access = lan743x_mac_mmd_access(phy_id, dev_addr,
MMD_ACCESS_WRITE);
lan743x_csr_write(adapter, MAC_MII_ACC, mmd_access);
return lan743x_mac_mii_wait_till_not_busy(adapter);
}
static int lan743x_sgmii_wait_till_not_busy(struct lan743x_adapter *adapter)
{
u32 data;
int ret;
ret = readx_poll_timeout(LAN743X_CSR_READ_OP, SGMII_ACC, data,
!(data & SGMII_ACC_SGMII_BZY_), 100, 1000000);
if (ret < 0)
netif_err(adapter, drv, adapter->netdev,
"%s: error %d sgmii wait timeout\n", __func__, ret);
return ret;
}
int lan743x_sgmii_read(struct lan743x_adapter *adapter, u8 mmd, u16 addr)
{
u32 mmd_access;
int ret;
u32 val;
if (mmd > 31) {
netif_err(adapter, probe, adapter->netdev,
"%s mmd should <= 31\n", __func__);
return -EINVAL;
}
mutex_lock(&adapter->sgmii_rw_lock);
/* Load Register Address */
mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
mmd_access |= (addr | SGMII_ACC_SGMII_BZY_);
lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
ret = lan743x_sgmii_wait_till_not_busy(adapter);
if (ret < 0)
goto sgmii_unlock;
val = lan743x_csr_read(adapter, SGMII_DATA);
ret = (int)(val & SGMII_DATA_MASK_);
sgmii_unlock:
mutex_unlock(&adapter->sgmii_rw_lock);
return ret;
}
static int lan743x_sgmii_write(struct lan743x_adapter *adapter,
u8 mmd, u16 addr, u16 val)
{
u32 mmd_access;
int ret;
if (mmd > 31) {
netif_err(adapter, probe, adapter->netdev,
"%s mmd should <= 31\n", __func__);
return -EINVAL;
}
mutex_lock(&adapter->sgmii_rw_lock);
/* Load Register Data */
lan743x_csr_write(adapter, SGMII_DATA, (u32)(val & SGMII_DATA_MASK_));
/* Load Register Address */
mmd_access = mmd << SGMII_ACC_SGMII_MMD_SHIFT_;
mmd_access |= (addr | SGMII_ACC_SGMII_BZY_ | SGMII_ACC_SGMII_WR_);
lan743x_csr_write(adapter, SGMII_ACC, mmd_access);
ret = lan743x_sgmii_wait_till_not_busy(adapter);
mutex_unlock(&adapter->sgmii_rw_lock);
return ret;
}
static int lan743x_sgmii_mpll_set(struct lan743x_adapter *adapter,
u16 baud)
{
int mpllctrl0;
int mpllctrl1;
int miscctrl1;
int ret;
mpllctrl0 = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
VR_MII_GEN2_4_MPLL_CTRL0);
if (mpllctrl0 < 0)
return mpllctrl0;
mpllctrl0 &= ~VR_MII_MPLL_CTRL0_USE_REFCLK_PAD_;
if (baud == VR_MII_BAUD_RATE_1P25GBPS) {
mpllctrl1 = VR_MII_MPLL_MULTIPLIER_100;
/* mpll_baud_clk/4 */
miscctrl1 = 0xA;
} else {
mpllctrl1 = VR_MII_MPLL_MULTIPLIER_125;
/* mpll_baud_clk/2 */
miscctrl1 = 0x5;
}
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_GEN2_4_MPLL_CTRL0, mpllctrl0);
if (ret < 0)
return ret;
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_GEN2_4_MPLL_CTRL1, mpllctrl1);
if (ret < 0)
return ret;
return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_GEN2_4_MISC_CTRL1, miscctrl1);
}
static int lan743x_sgmii_2_5G_mode_set(struct lan743x_adapter *adapter,
bool enable)
{
if (enable)
return lan743x_sgmii_mpll_set(adapter,
VR_MII_BAUD_RATE_3P125GBPS);
else
return lan743x_sgmii_mpll_set(adapter,
VR_MII_BAUD_RATE_1P25GBPS);
}
static int lan743x_is_sgmii_2_5G_mode(struct lan743x_adapter *adapter,
bool *status)
{
int ret;
ret = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
VR_MII_GEN2_4_MPLL_CTRL1);
if (ret < 0)
return ret;
if (ret == VR_MII_MPLL_MULTIPLIER_125 ||
ret == VR_MII_MPLL_MULTIPLIER_50)
*status = true;
else
*status = false;
return 0;
}
static int lan743x_sgmii_aneg_update(struct lan743x_adapter *adapter)
{
enum lan743x_sgmii_lsd lsd = adapter->sgmii_lsd;
int mii_ctrl;
int dgt_ctrl;
int an_ctrl;
int ret;
if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE)
/* Switch to 2.5 Gbps */
ret = lan743x_sgmii_2_5G_mode_set(adapter, true);
else
/* Switch to 10/100/1000 Mbps clock */
ret = lan743x_sgmii_2_5G_mode_set(adapter, false);
if (ret < 0)
return ret;
/* Enable SGMII Auto NEG */
mii_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
if (mii_ctrl < 0)
return mii_ctrl;
an_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, VR_MII_AN_CTRL);
if (an_ctrl < 0)
return an_ctrl;
dgt_ctrl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
VR_MII_DIG_CTRL1);
if (dgt_ctrl < 0)
return dgt_ctrl;
if (lsd == LINK_2500_MASTER || lsd == LINK_2500_SLAVE) {
mii_ctrl &= ~(BMCR_ANENABLE | BMCR_ANRESTART | BMCR_SPEED100);
mii_ctrl |= BMCR_SPEED1000;
dgt_ctrl |= VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
dgt_ctrl &= ~VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
/* In order for Auto-Negotiation to operate properly at
* 2.5 Gbps the 1.6ms link timer values must be adjusted
* The VR_MII_LINK_TIMER_CTRL Register must be set to
* 16'h7A1 and The CL37_TMR_OVR_RIDE bit of the
* VR_MII_DIG_CTRL1 Register set to 1
*/
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_LINK_TIMER_CTRL, 0x7A1);
if (ret < 0)
return ret;
} else {
mii_ctrl |= (BMCR_ANENABLE | BMCR_ANRESTART);
an_ctrl &= ~VR_MII_AN_CTRL_SGMII_LINK_STS_;
dgt_ctrl &= ~VR_MII_DIG_CTRL1_CL37_TMR_OVR_RIDE_;
dgt_ctrl |= VR_MII_DIG_CTRL1_MAC_AUTO_SW_;
}
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR,
mii_ctrl);
if (ret < 0)
return ret;
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_DIG_CTRL1, dgt_ctrl);
if (ret < 0)
return ret;
return lan743x_sgmii_write(adapter, MDIO_MMD_VEND2,
VR_MII_AN_CTRL, an_ctrl);
}
static int lan743x_pcs_seq_state(struct lan743x_adapter *adapter, u8 state)
{
u8 wait_cnt = 0;
u32 dig_sts;
do {
dig_sts = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2,
VR_MII_DIG_STS);
if (((dig_sts & VR_MII_DIG_STS_PSEQ_STATE_MASK_) >>
VR_MII_DIG_STS_PSEQ_STATE_POS_) == state)
break;
usleep_range(1000, 2000);
} while (wait_cnt++ < 10);
if (wait_cnt >= 10)
return -ETIMEDOUT;
return 0;
}
static int lan743x_sgmii_config(struct lan743x_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct phy_device *phydev = netdev->phydev;
enum lan743x_sgmii_lsd lsd = POWER_DOWN;
int mii_ctl;
bool status;
int ret;
switch (phydev->speed) {
case SPEED_2500:
if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
lsd = LINK_2500_MASTER;
else
lsd = LINK_2500_SLAVE;
break;
case SPEED_1000:
if (phydev->master_slave_state == MASTER_SLAVE_STATE_MASTER)
lsd = LINK_1000_MASTER;
else
lsd = LINK_1000_SLAVE;
break;
case SPEED_100:
if (phydev->duplex)
lsd = LINK_100FD;
else
lsd = LINK_100HD;
break;
case SPEED_10:
if (phydev->duplex)
lsd = LINK_10FD;
else
lsd = LINK_10HD;
break;
default:
netif_err(adapter, drv, adapter->netdev,
"Invalid speed %d\n", phydev->speed);
return -EINVAL;
}
adapter->sgmii_lsd = lsd;
ret = lan743x_sgmii_aneg_update(adapter);
if (ret < 0) {
netif_err(adapter, drv, adapter->netdev,
"error %d SGMII cfg failed\n", ret);
return ret;
}
ret = lan743x_is_sgmii_2_5G_mode(adapter, &status);
if (ret < 0) {
netif_err(adapter, drv, adapter->netdev,
"erro %d SGMII get mode failed\n", ret);
return ret;
}
if (status)
netif_dbg(adapter, drv, adapter->netdev,
"SGMII 2.5G mode enable\n");
else
netif_dbg(adapter, drv, adapter->netdev,
"SGMII 1G mode enable\n");
/* SGMII/1000/2500BASE-X PCS power down */
mii_ctl = lan743x_sgmii_read(adapter, MDIO_MMD_VEND2, MII_BMCR);
if (mii_ctl < 0)
return mii_ctl;
mii_ctl |= BMCR_PDOWN;
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
if (ret < 0)
return ret;
ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_DOWN);
if (ret < 0)
return ret;
/* SGMII/1000/2500BASE-X PCS power up */
mii_ctl &= ~BMCR_PDOWN;
ret = lan743x_sgmii_write(adapter, MDIO_MMD_VEND2, MII_BMCR, mii_ctl);
if (ret < 0)
return ret;
ret = lan743x_pcs_seq_state(adapter, PCS_POWER_STATE_UP);
if (ret < 0)
return ret;
return 0;
}
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);
eth_hw_addr_set(netdev, adapter->mac_address);
return 0;
}
static int lan743x_mac_open(struct lan743x_adapter *adapter)
{
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 0;
}
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);
}
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 + ETH_FCS_LEN)
<< 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 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;
case SPEED_2500:
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);
if (phydev->interface == PHY_INTERFACE_MODE_SGMII ||
phydev->interface == PHY_INTERFACE_MODE_1000BASEX ||
phydev->interface == PHY_INTERFACE_MODE_2500BASEX)
lan743x_sgmii_config(adapter);
}
}
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 void lan743x_phy_interface_select(struct lan743x_adapter *adapter)
{
u32 id_rev;
u32 data;
data = lan743x_csr_read(adapter, MAC_CR);
id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
if (adapter->is_pci11x1x && adapter->is_sgmii_en)
adapter->phy_interface = PHY_INTERFACE_MODE_SGMII;
else if (id_rev == ID_REV_ID_LAN7430_)
adapter->phy_interface = PHY_INTERFACE_MODE_GMII;
else if ((id_rev == ID_REV_ID_LAN7431_) && (data & MAC_CR_MII_EN_))
adapter->phy_interface = PHY_INTERFACE_MODE_MII;
else
adapter->phy_interface = PHY_INTERFACE_MODE_RGMII;
}
static int lan743x_phy_open(struct lan743x_adapter *adapter)
{
struct net_device *netdev = adapter->netdev;
struct lan743x_phy *phy = &adapter->phy;
struct fixed_phy_status fphy_status = {
.link = 1,
.speed = SPEED_1000,
.duplex = DUPLEX_FULL,
};
struct phy_device *phydev;
int ret = -EIO;
/* try devicetree phy, or fixed link */
phydev = of_phy_get_and_connect(netdev, adapter->pdev->dev.of_node,
lan743x_phy_link_status_change);
if (!phydev) {
/* try internal phy */
phydev = phy_find_first(adapter->mdiobus);
if (!phydev) {
if ((adapter->csr.id_rev & ID_REV_ID_MASK_) ==
ID_REV_ID_LAN7431_) {
phydev = fixed_phy_register(PHY_POLL,
&fphy_status, NULL);
if (IS_ERR(phydev)) {
netdev_err(netdev, "No PHY/fixed_PHY found\n");
return -EIO;
}
} else {
goto return_error;
}
}
lan743x_phy_interface_select(adapter);
ret = phy_connect_direct(netdev, phydev,
lan743x_phy_link_status_change,
adapter->phy_interface);
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);
phy_attached_info(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_;
}
if (netdev->features & NETIF_F_RXCSUM)
rfctl |= RFE_CTL_IP_COE_ | RFE_CTL_TCP_UDP_COE_;
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;
netdev_tx_t retval = NETDEV_TX_OK;
unsigned int frame_length = 0;
unsigned int head_length = 0;
unsigned long irq_flags = 0;
bool do_timestamp = false;
bool ignore_sync = false;
struct netdev_queue *txq;
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 how many descriptors we needed to restart the queue */
tx->rqd_descriptors = required_number_of_descriptors;
retval = NETDEV_TX_BUSY;
txq = netdev_get_tx_queue(tx->adapter->netdev,
tx->channel_number);
netif_tx_stop_queue(txq);
}
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;
}
tx->frame_count++;
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 retval;
}
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;
unsigned long irq_flags = 0;
struct netdev_queue *txq;
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);
txq = netdev_get_tx_queue(adapter->netdev, tx->channel_number);
if (netif_tx_queue_stopped(txq)) {
if (tx->rqd_descriptors) {
if (tx->rqd_descriptors <=
lan743x_tx_get_avail_desc(tx)) {
tx->rqd_descriptors = 0;
netif_tx_wake_queue(txq);
}
} else {
netif_tx_wake_queue(txq);
}
}
spin_unlock_irqrestore(&tx->ring_lock, irq_flags);
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))) {
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);
tx->rqd_descriptors = 0;
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_napi_add_tx_weight(adapter->netdev,
&tx->napi, lan743x_tx_napi_poll,
NAPI_POLL_WEIGHT);
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 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,
gfp_t gfp)
{
struct net_device *netdev = rx->adapter->netdev;
struct device *dev = &rx->adapter->pdev->dev;
struct lan743x_rx_buffer_info *buffer_info;
unsigned int buffer_length, used_length;
struct lan743x_rx_descriptor *descriptor;
struct sk_buff *skb;
dma_addr_t dma_ptr;
buffer_length = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + RX_HEAD_PADDING;
descriptor = &rx->ring_cpu_ptr[index];
buffer_info = &rx->buffer_info[index];
skb = __netdev_alloc_skb(netdev, buffer_length, gfp);
if (!skb)
return -ENOMEM;
dma_ptr = dma_map_single(dev, skb->data, buffer_length, DMA_FROM_DEVICE);
if (dma_mapping_error(dev, dma_ptr)) {
dev_kfree_skb_any(skb);
return -ENOMEM;
}
if (buffer_info->dma_ptr) {
/* sync used area of buffer only */
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_)
/* frame length is valid only if LS bit is set.
* it's a safe upper bound for the used area in this
* buffer.
*/
used_length = min(RX_DESC_DATA0_FRAME_LENGTH_GET_
(le32_to_cpu(descriptor->data0)),
buffer_info->buffer_length);
else
used_length = buffer_info->buffer_length;
dma_sync_single_for_cpu(dev, buffer_info->dma_ptr,
used_length,
DMA_FROM_DEVICE);
dma_unmap_single_attrs(dev, buffer_info->dma_ptr,
buffer_info->buffer_length,
DMA_FROM_DEVICE,
DMA_ATTR_SKIP_CPU_SYNC);
}
buffer_info->skb = skb;
buffer_info->dma_ptr = dma_ptr;
buffer_info->buffer_length = buffer_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_ |
(buffer_length & RX_DESC_DATA0_BUF_LENGTH_MASK_)));
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 struct sk_buff *
lan743x_rx_trim_skb(struct sk_buff *skb, int frame_length)
{
if (skb_linearize(skb)) {
dev_kfree_skb_irq(skb);
return NULL;
}
frame_length = max_t(int, 0, frame_length - ETH_FCS_LEN);
if (skb->len > frame_length) {
skb->tail -= skb->len - frame_length;
skb->len = frame_length;
}
return skb;
}
static int lan743x_rx_process_buffer(struct lan743x_rx *rx)
{
int current_head_index = le32_to_cpu(*rx->head_cpu_ptr);
struct lan743x_rx_descriptor *descriptor, *desc_ext;
struct net_device *netdev = rx->adapter->netdev;
int result = RX_PROCESS_RESULT_NOTHING_TO_DO;
struct lan743x_rx_buffer_info *buffer_info;
int frame_length, buffer_length;
bool is_ice, is_tce, is_icsm;
int extension_index = -1;
bool is_last, is_first;
struct sk_buff *skb;
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)
goto done;
descriptor = &rx->ring_cpu_ptr[rx->last_head];
if (le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_OWN_)
goto done;
buffer_info = &rx->buffer_info[rx->last_head];
is_last = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_LS_;
is_first = le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_FS_;
if (is_last && le32_to_cpu(descriptor->data0) & RX_DESC_DATA0_EXT_) {
/* extension is expected to follow */
int index = lan743x_rx_next_index(rx, rx->last_head);
if (index == current_head_index)
/* extension not yet available */
goto done;
desc_ext = &rx->ring_cpu_ptr[index];
if (le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_OWN_)
/* extension not yet available */
goto done;
if (!(le32_to_cpu(desc_ext->data0) & RX_DESC_DATA0_EXT_))
goto move_forward;
extension_index = index;
}
/* Only the last buffer in a multi-buffer frame contains the total frame
* length. The chip occasionally sends more buffers than strictly
* required to reach the total frame length.
* Handle this by adding all buffers to the skb in their entirety.
* Once the real frame length is known, trim the skb.
*/
frame_length =
RX_DESC_DATA0_FRAME_LENGTH_GET_(le32_to_cpu(descriptor->data0));
buffer_length = buffer_info->buffer_length;
is_ice = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICE_;
is_tce = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_TCE_;
is_icsm = le32_to_cpu(descriptor->data1) & RX_DESC_DATA1_STATUS_ICSM_;
netdev_dbg(netdev, "%s%schunk: %d/%d",
is_first ? "first " : " ",
is_last ? "last " : " ",
frame_length, buffer_length);
/* save existing skb, allocate new skb and map to dma */
skb = buffer_info->skb;
if (lan743x_rx_init_ring_element(rx, rx->last_head,
GFP_ATOMIC | GFP_DMA)) {
/* failed to allocate next skb.
* Memory is very low.
* Drop this packet and reuse buffer.
*/
lan743x_rx_reuse_ring_element(rx, rx->last_head);
/* drop packet that was being assembled */
dev_kfree_skb_irq(rx->skb_head);
rx->skb_head = NULL;
goto process_extension;
}
/* add buffers to skb via skb->frag_list */
if (is_first) {
skb_reserve(skb, RX_HEAD_PADDING);
skb_put(skb, buffer_length - RX_HEAD_PADDING);
if (rx->skb_head)
dev_kfree_skb_irq(rx->skb_head);
rx->skb_head = skb;
} else if (rx->skb_head) {
skb_put(skb, buffer_length);
if (skb_shinfo(rx->skb_head)->frag_list)
rx->skb_tail->next = skb;
else
skb_shinfo(rx->skb_head)->frag_list = skb;
rx->skb_tail = skb;
rx->skb_head->len += skb->len;
rx->skb_head->data_len += skb->len;
rx->skb_head->truesize += skb->truesize;
} else {
/* packet to assemble has already been dropped because one or
* more of its buffers could not be allocated
*/
netdev_dbg(netdev, "drop buffer intended for dropped packet");
dev_kfree_skb_irq(skb);
}
process_extension:
if (extension_index >= 0) {
u32 ts_sec;
u32 ts_nsec;
ts_sec = le32_to_cpu(desc_ext->data1);
ts_nsec = (le32_to_cpu(desc_ext->data2) &
RX_DESC_DATA2_TS_NS_MASK_);
if (rx->skb_head)
skb_hwtstamps(rx->skb_head)->hwtstamp =
ktime_set(ts_sec, ts_nsec);
lan743x_rx_reuse_ring_element(rx, extension_index);
rx->last_head = extension_index;
netdev_dbg(netdev, "process extension");
}
if (is_last && rx->skb_head)
rx->skb_head = lan743x_rx_trim_skb(rx->skb_head, frame_length);
if (is_last && rx->skb_head) {
rx->skb_head->protocol = eth_type_trans(rx->skb_head,
rx->adapter->netdev);
if (rx->adapter->netdev->features & NETIF_F_RXCSUM) {
if (!is_ice && !is_tce && !is_icsm)
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
netdev_dbg(netdev, "sending %d byte frame to OS",
rx->skb_head->len);
napi_gro_receive(&rx->napi, rx->skb_head);
rx->skb_head = NULL;
}
move_forward:
/* push tail and head forward */
rx->last_tail = rx->last_head;
rx->last_head = lan743x_rx_next_index(rx, rx->last_head);
result = RX_PROCESS_RESULT_BUFFER_RECEIVED;
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_buffer(rx);
if (result == RX_PROCESS_RESULT_NOTHING_TO_DO)
break;
}
rx->frame_count += count;
if (count == weight || result == RX_PROCESS_RESULT_BUFFER_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))) {
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++) {
ret = lan743x_rx_init_ring_element(rx, index, GFP_KERNEL);
if (ret)
goto cleanup;
}
return 0;
cleanup:
netif_warn(rx->adapter, ifup, rx->adapter->netdev,
"Error allocating memory for LAN743x\n");
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);
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;
for (index = 0; index < adapter->used_tx_channels; index++)
lan743x_tx_close(&adapter->tx[index]);
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;
}
for (index = 0; index < adapter->used_tx_channels; index++) {
ret = lan743x_tx_open(&adapter->tx[index]);
if (ret)
goto close_tx;
}
return 0;
close_tx:
for (index = 0; index < adapter->used_tx_channels; index++) {
if (adapter->tx[index].ring_cpu_ptr)
lan743x_tx_close(&adapter->tx[index]);
}
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);
u8 ch = 0;
if (adapter->is_pci11x1x)
ch = skb->queue_mapping % PCI11X1X_USED_TX_CHANNELS;
return lan743x_tx_xmit_frame(&adapter->tx[ch], 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;
eth_hw_addr_set(netdev, 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_eth_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->is_pci11x1x = is_pci11x1x_chip(adapter);
if (adapter->is_pci11x1x) {
adapter->max_tx_channels = PCI11X1X_MAX_TX_CHANNELS;
adapter->used_tx_channels = PCI11X1X_USED_TX_CHANNELS;
adapter->max_vector_count = PCI11X1X_MAX_VECTOR_COUNT;
pci11x1x_strap_get_status(adapter);
spin_lock_init(&adapter->eth_syslock_spinlock);
mutex_init(&adapter->sgmii_rw_lock);
} else {
adapter->max_tx_channels = LAN743X_MAX_TX_CHANNELS;
adapter->used_tx_channels = LAN743X_USED_TX_CHANNELS;
adapter->max_vector_count = LAN743X_MAX_VECTOR_COUNT;
}
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;
}
for (index = 0; index < adapter->used_tx_channels; index++) {
tx = &adapter->tx[index];
tx->adapter = adapter;
tx->channel_number = index;
spin_lock_init(&tx->ring_lock);
}
return 0;
}
static int lan743x_mdiobus_init(struct lan743x_adapter *adapter)
{
u32 sgmii_ctl;
int ret;
adapter->mdiobus = devm_mdiobus_alloc(&adapter->pdev->dev);
if (!(adapter->mdiobus)) {
ret = -ENOMEM;
goto return_error;
}
adapter->mdiobus->priv = (void *)adapter;
if (adapter->is_pci11x1x) {
if (adapter->is_sgmii_en) {
sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
sgmii_ctl |= SGMII_CTL_SGMII_ENABLE_;
sgmii_ctl &= ~SGMII_CTL_SGMII_POWER_DN_;
lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
netif_dbg(adapter, drv, adapter->netdev,
"SGMII operation\n");
adapter->mdiobus->read = lan743x_mdiobus_read_c22;
adapter->mdiobus->write = lan743x_mdiobus_write_c22;
adapter->mdiobus->read_c45 = lan743x_mdiobus_read_c45;
adapter->mdiobus->write_c45 = lan743x_mdiobus_write_c45;
adapter->mdiobus->name = "lan743x-mdiobus-c45";
netif_dbg(adapter, drv, adapter->netdev,
"lan743x-mdiobus-c45\n");
} else {
sgmii_ctl = lan743x_csr_read(adapter, SGMII_CTL);
sgmii_ctl &= ~SGMII_CTL_SGMII_ENABLE_;
sgmii_ctl |= SGMII_CTL_SGMII_POWER_DN_;
lan743x_csr_write(adapter, SGMII_CTL, sgmii_ctl);
netif_dbg(adapter, drv, adapter->netdev,
"RGMII operation\n");
// Only C22 support when RGMII I/F
adapter->mdiobus->read = lan743x_mdiobus_read_c22;
adapter->mdiobus->write = lan743x_mdiobus_write_c22;
adapter->mdiobus->name = "lan743x-mdiobus";
netif_dbg(adapter, drv, adapter->netdev,
"lan743x-mdiobus\n");
}
} else {
adapter->mdiobus->read = lan743x_mdiobus_read_c22;
adapter->mdiobus->write = lan743x_mdiobus_write_c22;
adapter->mdiobus->name = "lan743x-mdiobus";
netif_dbg(adapter, drv, adapter->netdev, "lan743x-mdiobus\n");
}
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;
int ret = -ENODEV;
if (id->device == PCI_DEVICE_ID_SMSC_A011 ||
id->device == PCI_DEVICE_ID_SMSC_A041) {
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
sizeof(struct lan743x_adapter),
PCI11X1X_USED_TX_CHANNELS,
LAN743X_USED_RX_CHANNELS);
} else {
netdev = devm_alloc_etherdev_mqs(&pdev->dev,
sizeof(struct lan743x_adapter),
LAN743X_USED_TX_CHANNELS,
LAN743X_USED_RX_CHANNELS);
}
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;
of_get_mac_address(pdev->dev.of_node, adapter->mac_address);
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 | NETIF_F_RXCSUM;
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 sopass;
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_;
}
if (adapter->wolopts & WAKE_MAGICSECURE) {
sopass = *(u32 *)adapter->sopass;
lan743x_csr_write(adapter, MAC_MP_SO_LO, sopass);
sopass = *(u16 *)&adapter->sopass[4];
lan743x_csr_write(adapter, MAC_MP_SO_HI, sopass);
wucsr |= MAC_MP_SO_EN_;
}
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);
u32 data;
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);
if (adapter->is_pci11x1x) {
/* Save HW_CFG to config again in PM resume */
data = lan743x_csr_read(adapter, HW_CFG);
adapter->hw_cfg = data;
data |= (HW_CFG_RST_PROTECT_PCIE_ |
HW_CFG_D3_RESET_DIS_ |
HW_CFG_D3_VAUX_OVR_ |
HW_CFG_HOT_RESET_DIS_ |
HW_CFG_RST_PROTECT_);
lan743x_csr_write(adapter, HW_CFG, data);
}
/* 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);
/* Restore HW_CFG that was saved during pm suspend */
if (adapter->is_pci11x1x)
lan743x_csr_write(adapter, HW_CFG, adapter->hw_cfg);
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);
ret = lan743x_csr_read(adapter, MAC_WK_SRC);
netif_info(adapter, drv, adapter->netdev,
"Wakeup source : 0x%08X\n", ret);
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) },
{ PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A011) },
{ PCI_DEVICE(PCI_VENDOR_ID_SMSC, PCI_DEVICE_ID_SMSC_A041) },
{ 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");
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