Merge branch 'txgbe-phylink-support'

Jiawen Wu says:

====================
TXGBE PHYLINK support

Implement I2C, SFP, GPIO and PHYLINK to setup TXGBE link.

Because our I2C and PCS are based on Synopsys Designware IP-core, extend
the i2c-designware and pcs-xpcs driver to realize our functions.
====================

Link: https://lore.kernel.org/r/20230606092107.764621-1-jiawenwu@trustnetic.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni 2023-06-08 13:25:14 +02:00
commit b62d9e2004
11 changed files with 881 additions and 33 deletions

View File

@ -40,6 +40,16 @@ config NGBE
config TXGBE
tristate "Wangxun(R) 10GbE PCI Express adapters support"
depends on PCI
depends on COMMON_CLK
select REGMAP
select I2C
select I2C_DESIGNWARE_PLATFORM
select PHYLINK
select HWMON if TXGBE=y
select SFP
select GPIOLIB
select GPIOLIB_IRQCHIP
select PCS_XPCS
select LIBWX
help
This driver supports Wangxun(R) 10GbE PCI Express family of

View File

@ -2048,7 +2048,8 @@ void wx_free_irq(struct wx *wx)
free_irq(entry->vector, q_vector);
}
free_irq(wx->msix_entries[vector].vector, wx);
if (wx->mac.type == wx_mac_em)
free_irq(wx->msix_entries[vector].vector, wx);
}
EXPORT_SYMBOL(wx_free_irq);

View File

@ -83,7 +83,9 @@
#define WX_GPIO_INTMASK 0x14834
#define WX_GPIO_INTTYPE_LEVEL 0x14838
#define WX_GPIO_POLARITY 0x1483C
#define WX_GPIO_INTSTATUS 0x14844
#define WX_GPIO_EOI 0x1484C
#define WX_GPIO_EXT 0x14850
/*********************** Transmit DMA registers **************************/
/* transmit global control */
@ -814,6 +816,7 @@ enum wx_isb_idx {
struct wx {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
void *priv;
u8 __iomem *hw_addr;
struct pci_dev *pdev;
struct net_device *netdev;
@ -846,6 +849,7 @@ struct wx {
bool wol_enabled;
bool ncsi_enabled;
bool gpio_ctrl;
raw_spinlock_t gpio_lock;
/* Tx fast path data */
int num_tx_queues;

View File

@ -8,4 +8,5 @@ obj-$(CONFIG_TXGBE) += txgbe.o
txgbe-objs := txgbe_main.o \
txgbe_hw.o \
txgbe_phy.o \
txgbe_ethtool.o

View File

@ -6,11 +6,39 @@
#include <linux/netdevice.h>
#include "../libwx/wx_ethtool.h"
#include "../libwx/wx_type.h"
#include "txgbe_type.h"
#include "txgbe_ethtool.h"
static int txgbe_nway_reset(struct net_device *netdev)
{
struct txgbe *txgbe = netdev_to_txgbe(netdev);
return phylink_ethtool_nway_reset(txgbe->phylink);
}
static int txgbe_get_link_ksettings(struct net_device *netdev,
struct ethtool_link_ksettings *cmd)
{
struct txgbe *txgbe = netdev_to_txgbe(netdev);
return phylink_ethtool_ksettings_get(txgbe->phylink, cmd);
}
static int txgbe_set_link_ksettings(struct net_device *netdev,
const struct ethtool_link_ksettings *cmd)
{
struct txgbe *txgbe = netdev_to_txgbe(netdev);
return phylink_ethtool_ksettings_set(txgbe->phylink, cmd);
}
static const struct ethtool_ops txgbe_ethtool_ops = {
.get_drvinfo = wx_get_drvinfo,
.nway_reset = txgbe_nway_reset,
.get_link = ethtool_op_get_link,
.get_link_ksettings = txgbe_get_link_ksettings,
.set_link_ksettings = txgbe_set_link_ksettings,
};
void txgbe_set_ethtool_ops(struct net_device *netdev)

View File

@ -7,6 +7,7 @@
#include <linux/netdevice.h>
#include <linux/string.h>
#include <linux/etherdevice.h>
#include <linux/phylink.h>
#include <net/ip.h>
#include <linux/if_vlan.h>
@ -15,6 +16,7 @@
#include "../libwx/wx_hw.h"
#include "txgbe_type.h"
#include "txgbe_hw.h"
#include "txgbe_phy.h"
#include "txgbe_ethtool.h"
char txgbe_driver_name[] = "txgbe";
@ -81,6 +83,8 @@ static int txgbe_enumerate_functions(struct wx *wx)
**/
static void txgbe_irq_enable(struct wx *wx, bool queues)
{
wr32(wx, WX_PX_MISC_IEN, TXGBE_PX_MISC_IEN_MASK);
/* unmask interrupt */
wx_intr_enable(wx, TXGBE_INTR_MISC(wx));
if (queues)
@ -128,17 +132,6 @@ static irqreturn_t txgbe_intr(int __always_unused irq, void *data)
return IRQ_HANDLED;
}
static irqreturn_t txgbe_msix_other(int __always_unused irq, void *data)
{
struct wx *wx = data;
/* re-enable the original interrupt state */
if (netif_running(wx->netdev))
txgbe_irq_enable(wx, false);
return IRQ_HANDLED;
}
/**
* txgbe_request_msix_irqs - Initialize MSI-X interrupts
* @wx: board private structure
@ -170,13 +163,6 @@ static int txgbe_request_msix_irqs(struct wx *wx)
}
}
err = request_irq(wx->msix_entries[vector].vector,
txgbe_msix_other, 0, netdev->name, wx);
if (err) {
wx_err(wx, "request_irq for msix_other failed: %d\n", err);
goto free_queue_irqs;
}
return 0;
free_queue_irqs:
@ -219,7 +205,8 @@ static int txgbe_request_irq(struct wx *wx)
static void txgbe_up_complete(struct wx *wx)
{
u32 reg;
struct net_device *netdev = wx->netdev;
struct txgbe *txgbe;
wx_control_hw(wx, true);
wx_configure_vectors(wx);
@ -228,24 +215,17 @@ static void txgbe_up_complete(struct wx *wx)
smp_mb__before_atomic();
wx_napi_enable_all(wx);
txgbe = netdev_to_txgbe(netdev);
phylink_start(txgbe->phylink);
/* clear any pending interrupts, may auto mask */
rd32(wx, WX_PX_IC(0));
rd32(wx, WX_PX_IC(1));
rd32(wx, WX_PX_MISC_IC);
txgbe_irq_enable(wx, true);
/* Configure MAC Rx and Tx when link is up */
reg = rd32(wx, WX_MAC_RX_CFG);
wr32(wx, WX_MAC_RX_CFG, reg);
wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
reg = rd32(wx, WX_MAC_WDG_TIMEOUT);
wr32(wx, WX_MAC_WDG_TIMEOUT, reg);
reg = rd32(wx, WX_MAC_TX_CFG);
wr32(wx, WX_MAC_TX_CFG, (reg & ~WX_MAC_TX_CFG_SPEED_MASK) | WX_MAC_TX_CFG_SPEED_10G);
/* enable transmits */
netif_tx_start_all_queues(wx->netdev);
netif_carrier_on(wx->netdev);
netif_tx_start_all_queues(netdev);
}
static void txgbe_reset(struct wx *wx)
@ -280,7 +260,6 @@ static void txgbe_disable_device(struct wx *wx)
wx_disable_rx_queue(wx, wx->rx_ring[i]);
netif_tx_stop_all_queues(netdev);
netif_carrier_off(netdev);
netif_tx_disable(netdev);
wx_irq_disable(wx);
@ -311,8 +290,11 @@ static void txgbe_disable_device(struct wx *wx)
static void txgbe_down(struct wx *wx)
{
struct txgbe *txgbe = netdev_to_txgbe(wx->netdev);
txgbe_disable_device(wx);
txgbe_reset(wx);
phylink_stop(txgbe->phylink);
wx_clean_all_tx_rings(wx);
wx_clean_all_rx_rings(wx);
@ -516,6 +498,7 @@ static int txgbe_probe(struct pci_dev *pdev,
struct net_device *netdev;
int err, expected_gts;
struct wx *wx = NULL;
struct txgbe *txgbe;
u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
@ -680,10 +663,23 @@ static int txgbe_probe(struct pci_dev *pdev,
"0x%08x", etrack_id);
}
err = register_netdev(netdev);
txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL);
if (!txgbe) {
err = -ENOMEM;
goto err_release_hw;
}
txgbe->wx = wx;
wx->priv = txgbe;
err = txgbe_init_phy(txgbe);
if (err)
goto err_release_hw;
err = register_netdev(netdev);
if (err)
goto err_remove_phy;
pci_set_drvdata(pdev, wx);
netif_tx_stop_all_queues(netdev);
@ -711,6 +707,8 @@ static int txgbe_probe(struct pci_dev *pdev,
return 0;
err_remove_phy:
txgbe_remove_phy(txgbe);
err_release_hw:
wx_clear_interrupt_scheme(wx);
wx_control_hw(wx, false);
@ -736,11 +734,14 @@ err_pci_disable_dev:
static void txgbe_remove(struct pci_dev *pdev)
{
struct wx *wx = pci_get_drvdata(pdev);
struct txgbe *txgbe = wx->priv;
struct net_device *netdev;
netdev = wx->netdev;
unregister_netdev(netdev);
txgbe_remove_phy(txgbe);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));

View File

@ -0,0 +1,673 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */
#include <linux/gpio/machine.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/property.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include <linux/i2c.h>
#include <linux/pci.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/pcs/pcs-xpcs.h>
#include <linux/phylink.h>
#include "../libwx/wx_type.h"
#include "../libwx/wx_lib.h"
#include "../libwx/wx_hw.h"
#include "txgbe_type.h"
#include "txgbe_phy.h"
static int txgbe_swnodes_register(struct txgbe *txgbe)
{
struct txgbe_nodes *nodes = &txgbe->nodes;
struct pci_dev *pdev = txgbe->wx->pdev;
struct software_node *swnodes;
u32 id;
id = (pdev->bus->number << 8) | pdev->devfn;
snprintf(nodes->gpio_name, sizeof(nodes->gpio_name), "txgbe_gpio-%x", id);
snprintf(nodes->i2c_name, sizeof(nodes->i2c_name), "txgbe_i2c-%x", id);
snprintf(nodes->sfp_name, sizeof(nodes->sfp_name), "txgbe_sfp-%x", id);
snprintf(nodes->phylink_name, sizeof(nodes->phylink_name), "txgbe_phylink-%x", id);
swnodes = nodes->swnodes;
/* GPIO 0: tx fault
* GPIO 1: tx disable
* GPIO 2: sfp module absent
* GPIO 3: rx signal lost
* GPIO 4: rate select, 1G(0) 10G(1)
* GPIO 5: rate select, 1G(0) 10G(1)
*/
nodes->gpio_props[0] = PROPERTY_ENTRY_STRING("pinctrl-names", "default");
swnodes[SWNODE_GPIO] = NODE_PROP(nodes->gpio_name, nodes->gpio_props);
nodes->gpio0_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 0, GPIO_ACTIVE_HIGH);
nodes->gpio1_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 1, GPIO_ACTIVE_HIGH);
nodes->gpio2_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 2, GPIO_ACTIVE_LOW);
nodes->gpio3_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 3, GPIO_ACTIVE_HIGH);
nodes->gpio4_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 4, GPIO_ACTIVE_HIGH);
nodes->gpio5_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_GPIO], 5, GPIO_ACTIVE_HIGH);
nodes->i2c_props[0] = PROPERTY_ENTRY_STRING("compatible", "snps,designware-i2c");
nodes->i2c_props[1] = PROPERTY_ENTRY_BOOL("wx,i2c-snps-model");
nodes->i2c_props[2] = PROPERTY_ENTRY_U32("clock-frequency", I2C_MAX_STANDARD_MODE_FREQ);
swnodes[SWNODE_I2C] = NODE_PROP(nodes->i2c_name, nodes->i2c_props);
nodes->i2c_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_I2C]);
nodes->sfp_props[0] = PROPERTY_ENTRY_STRING("compatible", "sff,sfp");
nodes->sfp_props[1] = PROPERTY_ENTRY_REF_ARRAY("i2c-bus", nodes->i2c_ref);
nodes->sfp_props[2] = PROPERTY_ENTRY_REF_ARRAY("tx-fault-gpios", nodes->gpio0_ref);
nodes->sfp_props[3] = PROPERTY_ENTRY_REF_ARRAY("tx-disable-gpios", nodes->gpio1_ref);
nodes->sfp_props[4] = PROPERTY_ENTRY_REF_ARRAY("mod-def0-gpios", nodes->gpio2_ref);
nodes->sfp_props[5] = PROPERTY_ENTRY_REF_ARRAY("los-gpios", nodes->gpio3_ref);
nodes->sfp_props[6] = PROPERTY_ENTRY_REF_ARRAY("rate-select1-gpios", nodes->gpio4_ref);
nodes->sfp_props[7] = PROPERTY_ENTRY_REF_ARRAY("rate-select0-gpios", nodes->gpio5_ref);
swnodes[SWNODE_SFP] = NODE_PROP(nodes->sfp_name, nodes->sfp_props);
nodes->sfp_ref[0] = SOFTWARE_NODE_REFERENCE(&swnodes[SWNODE_SFP]);
nodes->phylink_props[0] = PROPERTY_ENTRY_STRING("managed", "in-band-status");
nodes->phylink_props[1] = PROPERTY_ENTRY_REF_ARRAY("sfp", nodes->sfp_ref);
swnodes[SWNODE_PHYLINK] = NODE_PROP(nodes->phylink_name, nodes->phylink_props);
nodes->group[SWNODE_GPIO] = &swnodes[SWNODE_GPIO];
nodes->group[SWNODE_I2C] = &swnodes[SWNODE_I2C];
nodes->group[SWNODE_SFP] = &swnodes[SWNODE_SFP];
nodes->group[SWNODE_PHYLINK] = &swnodes[SWNODE_PHYLINK];
return software_node_register_node_group(nodes->group);
}
static int txgbe_pcs_read(struct mii_bus *bus, int addr, int devnum, int regnum)
{
struct wx *wx = bus->priv;
u32 offset, val;
if (addr)
return -EOPNOTSUPP;
offset = devnum << 16 | regnum;
/* Set the LAN port indicator to IDA_ADDR */
wr32(wx, TXGBE_XPCS_IDA_ADDR, offset);
/* Read the data from IDA_DATA register */
val = rd32(wx, TXGBE_XPCS_IDA_DATA);
return (u16)val;
}
static int txgbe_pcs_write(struct mii_bus *bus, int addr, int devnum, int regnum, u16 val)
{
struct wx *wx = bus->priv;
u32 offset;
if (addr)
return -EOPNOTSUPP;
offset = devnum << 16 | regnum;
/* Set the LAN port indicator to IDA_ADDR */
wr32(wx, TXGBE_XPCS_IDA_ADDR, offset);
/* Write the data to IDA_DATA register */
wr32(wx, TXGBE_XPCS_IDA_DATA, val);
return 0;
}
static int txgbe_mdio_pcs_init(struct txgbe *txgbe)
{
struct mii_bus *mii_bus;
struct dw_xpcs *xpcs;
struct pci_dev *pdev;
struct wx *wx;
int ret = 0;
wx = txgbe->wx;
pdev = wx->pdev;
mii_bus = devm_mdiobus_alloc(&pdev->dev);
if (!mii_bus)
return -ENOMEM;
mii_bus->name = "txgbe_pcs_mdio_bus";
mii_bus->read_c45 = &txgbe_pcs_read;
mii_bus->write_c45 = &txgbe_pcs_write;
mii_bus->parent = &pdev->dev;
mii_bus->phy_mask = ~0;
mii_bus->priv = wx;
snprintf(mii_bus->id, MII_BUS_ID_SIZE, "txgbe_pcs-%x",
(pdev->bus->number << 8) | pdev->devfn);
ret = devm_mdiobus_register(&pdev->dev, mii_bus);
if (ret)
return ret;
xpcs = xpcs_create_mdiodev(mii_bus, 0, PHY_INTERFACE_MODE_10GBASER);
if (IS_ERR(xpcs))
return PTR_ERR(xpcs);
txgbe->xpcs = xpcs;
return 0;
}
static struct phylink_pcs *txgbe_phylink_mac_select(struct phylink_config *config,
phy_interface_t interface)
{
struct txgbe *txgbe = netdev_to_txgbe(to_net_dev(config->dev));
return &txgbe->xpcs->pcs;
}
static void txgbe_mac_config(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state)
{
}
static void txgbe_mac_link_down(struct phylink_config *config,
unsigned int mode, phy_interface_t interface)
{
struct wx *wx = netdev_priv(to_net_dev(config->dev));
wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
}
static void txgbe_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct wx *wx = netdev_priv(to_net_dev(config->dev));
u32 txcfg, wdg;
txcfg = rd32(wx, WX_MAC_TX_CFG);
txcfg &= ~WX_MAC_TX_CFG_SPEED_MASK;
switch (speed) {
case SPEED_10000:
txcfg |= WX_MAC_TX_CFG_SPEED_10G;
break;
case SPEED_1000:
case SPEED_100:
case SPEED_10:
txcfg |= WX_MAC_TX_CFG_SPEED_1G;
break;
default:
break;
}
wr32(wx, WX_MAC_TX_CFG, txcfg | WX_MAC_TX_CFG_TE);
/* Re configure MAC Rx */
wr32m(wx, WX_MAC_RX_CFG, WX_MAC_RX_CFG_RE, WX_MAC_RX_CFG_RE);
wr32(wx, WX_MAC_PKT_FLT, WX_MAC_PKT_FLT_PR);
wdg = rd32(wx, WX_MAC_WDG_TIMEOUT);
wr32(wx, WX_MAC_WDG_TIMEOUT, wdg);
}
static const struct phylink_mac_ops txgbe_mac_ops = {
.mac_select_pcs = txgbe_phylink_mac_select,
.mac_config = txgbe_mac_config,
.mac_link_down = txgbe_mac_link_down,
.mac_link_up = txgbe_mac_link_up,
};
static int txgbe_phylink_init(struct txgbe *txgbe)
{
struct phylink_config *config;
struct fwnode_handle *fwnode;
struct wx *wx = txgbe->wx;
phy_interface_t phy_mode;
struct phylink *phylink;
config = devm_kzalloc(&wx->pdev->dev, sizeof(*config), GFP_KERNEL);
if (!config)
return -ENOMEM;
config->dev = &wx->netdev->dev;
config->type = PHYLINK_NETDEV;
config->mac_capabilities = MAC_10000FD | MAC_1000FD | MAC_SYM_PAUSE | MAC_ASYM_PAUSE;
phy_mode = PHY_INTERFACE_MODE_10GBASER;
__set_bit(PHY_INTERFACE_MODE_10GBASER, config->supported_interfaces);
fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_PHYLINK]);
phylink = phylink_create(config, fwnode, phy_mode, &txgbe_mac_ops);
if (IS_ERR(phylink))
return PTR_ERR(phylink);
txgbe->phylink = phylink;
return 0;
}
static int txgbe_gpio_get(struct gpio_chip *chip, unsigned int offset)
{
struct wx *wx = gpiochip_get_data(chip);
int val;
val = rd32m(wx, WX_GPIO_EXT, BIT(offset));
return !!(val & BIT(offset));
}
static int txgbe_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
{
struct wx *wx = gpiochip_get_data(chip);
u32 val;
val = rd32(wx, WX_GPIO_DDR);
if (BIT(offset) & val)
return GPIO_LINE_DIRECTION_OUT;
return GPIO_LINE_DIRECTION_IN;
}
static int txgbe_gpio_direction_in(struct gpio_chip *chip, unsigned int offset)
{
struct wx *wx = gpiochip_get_data(chip);
unsigned long flags;
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32m(wx, WX_GPIO_DDR, BIT(offset), 0);
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
return 0;
}
static int txgbe_gpio_direction_out(struct gpio_chip *chip, unsigned int offset,
int val)
{
struct wx *wx = gpiochip_get_data(chip);
unsigned long flags;
u32 set;
set = val ? BIT(offset) : 0;
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32m(wx, WX_GPIO_DR, BIT(offset), set);
wr32m(wx, WX_GPIO_DDR, BIT(offset), BIT(offset));
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
return 0;
}
static void txgbe_gpio_irq_ack(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct wx *wx = gpiochip_get_data(gc);
unsigned long flags;
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32(wx, WX_GPIO_EOI, BIT(hwirq));
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
}
static void txgbe_gpio_irq_mask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct wx *wx = gpiochip_get_data(gc);
unsigned long flags;
gpiochip_disable_irq(gc, hwirq);
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32m(wx, WX_GPIO_INTMASK, BIT(hwirq), BIT(hwirq));
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
}
static void txgbe_gpio_irq_unmask(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct wx *wx = gpiochip_get_data(gc);
unsigned long flags;
gpiochip_enable_irq(gc, hwirq);
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32m(wx, WX_GPIO_INTMASK, BIT(hwirq), 0);
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
}
static void txgbe_toggle_trigger(struct gpio_chip *gc, unsigned int offset)
{
struct wx *wx = gpiochip_get_data(gc);
u32 pol, val;
pol = rd32(wx, WX_GPIO_POLARITY);
val = rd32(wx, WX_GPIO_EXT);
if (val & BIT(offset))
pol &= ~BIT(offset);
else
pol |= BIT(offset);
wr32(wx, WX_GPIO_POLARITY, pol);
}
static int txgbe_gpio_set_type(struct irq_data *d, unsigned int type)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
struct wx *wx = gpiochip_get_data(gc);
u32 level, polarity, mask;
unsigned long flags;
mask = BIT(hwirq);
if (type & IRQ_TYPE_LEVEL_MASK) {
level = 0;
irq_set_handler_locked(d, handle_level_irq);
} else {
level = mask;
irq_set_handler_locked(d, handle_edge_irq);
}
if (type == IRQ_TYPE_EDGE_RISING || type == IRQ_TYPE_LEVEL_HIGH)
polarity = mask;
else
polarity = 0;
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
wr32m(wx, WX_GPIO_INTEN, mask, mask);
wr32m(wx, WX_GPIO_INTTYPE_LEVEL, mask, level);
if (type == IRQ_TYPE_EDGE_BOTH)
txgbe_toggle_trigger(gc, hwirq);
else
wr32m(wx, WX_GPIO_POLARITY, mask, polarity);
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
return 0;
}
static const struct irq_chip txgbe_gpio_irq_chip = {
.name = "txgbe_gpio_irq",
.irq_ack = txgbe_gpio_irq_ack,
.irq_mask = txgbe_gpio_irq_mask,
.irq_unmask = txgbe_gpio_irq_unmask,
.irq_set_type = txgbe_gpio_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static void txgbe_irq_handler(struct irq_desc *desc)
{
struct irq_chip *chip = irq_desc_get_chip(desc);
struct wx *wx = irq_desc_get_handler_data(desc);
struct txgbe *txgbe = wx->priv;
irq_hw_number_t hwirq;
unsigned long gpioirq;
struct gpio_chip *gc;
unsigned long flags;
u32 eicr;
eicr = wx_misc_isb(wx, WX_ISB_MISC);
chained_irq_enter(chip, desc);
gpioirq = rd32(wx, WX_GPIO_INTSTATUS);
gc = txgbe->gpio;
for_each_set_bit(hwirq, &gpioirq, gc->ngpio) {
int gpio = irq_find_mapping(gc->irq.domain, hwirq);
u32 irq_type = irq_get_trigger_type(gpio);
generic_handle_domain_irq(gc->irq.domain, hwirq);
if ((irq_type & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH) {
raw_spin_lock_irqsave(&wx->gpio_lock, flags);
txgbe_toggle_trigger(gc, hwirq);
raw_spin_unlock_irqrestore(&wx->gpio_lock, flags);
}
}
chained_irq_exit(chip, desc);
if (eicr & (TXGBE_PX_MISC_ETH_LK | TXGBE_PX_MISC_ETH_LKDN)) {
u32 reg = rd32(wx, TXGBE_CFG_PORT_ST);
phylink_mac_change(txgbe->phylink, !!(reg & TXGBE_CFG_PORT_ST_LINK_UP));
}
/* unmask interrupt */
wx_intr_enable(wx, TXGBE_INTR_MISC(wx));
}
static int txgbe_gpio_init(struct txgbe *txgbe)
{
struct gpio_irq_chip *girq;
struct gpio_chip *gc;
struct device *dev;
struct wx *wx;
int ret;
wx = txgbe->wx;
dev = &wx->pdev->dev;
raw_spin_lock_init(&wx->gpio_lock);
gc = devm_kzalloc(dev, sizeof(*gc), GFP_KERNEL);
if (!gc)
return -ENOMEM;
gc->label = devm_kasprintf(dev, GFP_KERNEL, "txgbe_gpio-%x",
(wx->pdev->bus->number << 8) | wx->pdev->devfn);
if (!gc->label)
return -ENOMEM;
gc->base = -1;
gc->ngpio = 6;
gc->owner = THIS_MODULE;
gc->parent = dev;
gc->fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_GPIO]);
gc->get = txgbe_gpio_get;
gc->get_direction = txgbe_gpio_get_direction;
gc->direction_input = txgbe_gpio_direction_in;
gc->direction_output = txgbe_gpio_direction_out;
girq = &gc->irq;
gpio_irq_chip_set_chip(girq, &txgbe_gpio_irq_chip);
girq->parent_handler = txgbe_irq_handler;
girq->parent_handler_data = wx;
girq->num_parents = 1;
girq->parents = devm_kcalloc(dev, girq->num_parents,
sizeof(*girq->parents), GFP_KERNEL);
if (!girq->parents)
return -ENOMEM;
girq->parents[0] = wx->msix_entries[wx->num_q_vectors].vector;
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_bad_irq;
ret = devm_gpiochip_add_data(dev, gc, wx);
if (ret)
return ret;
txgbe->gpio = gc;
return 0;
}
static int txgbe_clock_register(struct txgbe *txgbe)
{
struct pci_dev *pdev = txgbe->wx->pdev;
struct clk_lookup *clock;
char clk_name[32];
struct clk *clk;
snprintf(clk_name, sizeof(clk_name), "i2c_designware.%d",
(pdev->bus->number << 8) | pdev->devfn);
clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 156250000);
if (IS_ERR(clk))
return PTR_ERR(clk);
clock = clkdev_create(clk, NULL, clk_name);
if (!clock) {
clk_unregister(clk);
return -ENOMEM;
}
txgbe->clk = clk;
txgbe->clock = clock;
return 0;
}
static int txgbe_i2c_read(void *context, unsigned int reg, unsigned int *val)
{
struct wx *wx = context;
*val = rd32(wx, reg + TXGBE_I2C_BASE);
return 0;
}
static int txgbe_i2c_write(void *context, unsigned int reg, unsigned int val)
{
struct wx *wx = context;
wr32(wx, reg + TXGBE_I2C_BASE, val);
return 0;
}
static const struct regmap_config i2c_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_read = txgbe_i2c_read,
.reg_write = txgbe_i2c_write,
.fast_io = true,
};
static int txgbe_i2c_register(struct txgbe *txgbe)
{
struct platform_device_info info = {};
struct platform_device *i2c_dev;
struct regmap *i2c_regmap;
struct pci_dev *pdev;
struct wx *wx;
wx = txgbe->wx;
pdev = wx->pdev;
i2c_regmap = devm_regmap_init(&pdev->dev, NULL, wx, &i2c_regmap_config);
if (IS_ERR(i2c_regmap)) {
wx_err(wx, "failed to init I2C regmap\n");
return PTR_ERR(i2c_regmap);
}
info.parent = &pdev->dev;
info.fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_I2C]);
info.name = "i2c_designware";
info.id = (pdev->bus->number << 8) | pdev->devfn;
info.res = &DEFINE_RES_IRQ(pdev->irq);
info.num_res = 1;
i2c_dev = platform_device_register_full(&info);
if (IS_ERR(i2c_dev))
return PTR_ERR(i2c_dev);
txgbe->i2c_dev = i2c_dev;
return 0;
}
static int txgbe_sfp_register(struct txgbe *txgbe)
{
struct pci_dev *pdev = txgbe->wx->pdev;
struct platform_device_info info = {};
struct platform_device *sfp_dev;
info.parent = &pdev->dev;
info.fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_SFP]);
info.name = "sfp";
info.id = (pdev->bus->number << 8) | pdev->devfn;
sfp_dev = platform_device_register_full(&info);
if (IS_ERR(sfp_dev))
return PTR_ERR(sfp_dev);
txgbe->sfp_dev = sfp_dev;
return 0;
}
int txgbe_init_phy(struct txgbe *txgbe)
{
int ret;
ret = txgbe_swnodes_register(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to register software nodes\n");
return ret;
}
ret = txgbe_mdio_pcs_init(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to init mdio pcs: %d\n", ret);
goto err_unregister_swnode;
}
ret = txgbe_phylink_init(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to init phylink\n");
goto err_destroy_xpcs;
}
ret = txgbe_gpio_init(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to init gpio\n");
goto err_destroy_phylink;
}
ret = txgbe_clock_register(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to register clock: %d\n", ret);
goto err_destroy_phylink;
}
ret = txgbe_i2c_register(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to init i2c interface: %d\n", ret);
goto err_unregister_clk;
}
ret = txgbe_sfp_register(txgbe);
if (ret) {
wx_err(txgbe->wx, "failed to register sfp\n");
goto err_unregister_i2c;
}
return 0;
err_unregister_i2c:
platform_device_unregister(txgbe->i2c_dev);
err_unregister_clk:
clkdev_drop(txgbe->clock);
clk_unregister(txgbe->clk);
err_destroy_phylink:
phylink_destroy(txgbe->phylink);
err_destroy_xpcs:
xpcs_destroy(txgbe->xpcs);
err_unregister_swnode:
software_node_unregister_node_group(txgbe->nodes.group);
return ret;
}
void txgbe_remove_phy(struct txgbe *txgbe)
{
platform_device_unregister(txgbe->sfp_dev);
platform_device_unregister(txgbe->i2c_dev);
clkdev_drop(txgbe->clock);
clk_unregister(txgbe->clk);
phylink_destroy(txgbe->phylink);
xpcs_destroy(txgbe->xpcs);
software_node_unregister_node_group(txgbe->nodes.group);
}

View File

@ -0,0 +1,10 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */
#ifndef _TXGBE_PHY_H_
#define _TXGBE_PHY_H_
int txgbe_init_phy(struct txgbe *txgbe);
void txgbe_remove_phy(struct txgbe *txgbe);
#endif /* _TXGBE_NODE_H_ */

View File

@ -4,6 +4,8 @@
#ifndef _TXGBE_TYPE_H_
#define _TXGBE_TYPE_H_
#include <linux/property.h>
/* Device IDs */
#define TXGBE_DEV_ID_SP1000 0x1001
#define TXGBE_DEV_ID_WX1820 0x2001
@ -53,6 +55,39 @@
#define TXGBE_TS_CTL 0x10300
#define TXGBE_TS_CTL_EVAL_MD BIT(31)
/* GPIO register bit */
#define TXGBE_GPIOBIT_0 BIT(0) /* I:tx fault */
#define TXGBE_GPIOBIT_1 BIT(1) /* O:tx disabled */
#define TXGBE_GPIOBIT_2 BIT(2) /* I:sfp module absent */
#define TXGBE_GPIOBIT_3 BIT(3) /* I:rx signal lost */
#define TXGBE_GPIOBIT_4 BIT(4) /* O:rate select, 1G(0) 10G(1) */
#define TXGBE_GPIOBIT_5 BIT(5) /* O:rate select, 1G(0) 10G(1) */
/* Extended Interrupt Enable Set */
#define TXGBE_PX_MISC_ETH_LKDN BIT(8)
#define TXGBE_PX_MISC_DEV_RST BIT(10)
#define TXGBE_PX_MISC_ETH_EVENT BIT(17)
#define TXGBE_PX_MISC_ETH_LK BIT(18)
#define TXGBE_PX_MISC_ETH_AN BIT(19)
#define TXGBE_PX_MISC_INT_ERR BIT(20)
#define TXGBE_PX_MISC_GPIO BIT(26)
#define TXGBE_PX_MISC_IEN_MASK \
(TXGBE_PX_MISC_ETH_LKDN | TXGBE_PX_MISC_DEV_RST | \
TXGBE_PX_MISC_ETH_EVENT | TXGBE_PX_MISC_ETH_LK | \
TXGBE_PX_MISC_ETH_AN | TXGBE_PX_MISC_INT_ERR | \
TXGBE_PX_MISC_GPIO)
/* Port cfg registers */
#define TXGBE_CFG_PORT_ST 0x14404
#define TXGBE_CFG_PORT_ST_LINK_UP BIT(0)
/* I2C registers */
#define TXGBE_I2C_BASE 0x14900
/************************************** ETH PHY ******************************/
#define TXGBE_XPCS_IDA_ADDR 0x13000
#define TXGBE_XPCS_IDA_DATA 0x13004
/* Part Number String Length */
#define TXGBE_PBANUM_LENGTH 32
@ -100,4 +135,58 @@
extern char txgbe_driver_name[];
static inline struct txgbe *netdev_to_txgbe(struct net_device *netdev)
{
struct wx *wx = netdev_priv(netdev);
return wx->priv;
}
#define NODE_PROP(_NAME, _PROP) \
(const struct software_node) { \
.name = _NAME, \
.properties = _PROP, \
}
enum txgbe_swnodes {
SWNODE_GPIO = 0,
SWNODE_I2C,
SWNODE_SFP,
SWNODE_PHYLINK,
SWNODE_MAX
};
struct txgbe_nodes {
char gpio_name[32];
char i2c_name[32];
char sfp_name[32];
char phylink_name[32];
struct property_entry gpio_props[1];
struct property_entry i2c_props[3];
struct property_entry sfp_props[8];
struct property_entry phylink_props[2];
struct software_node_ref_args i2c_ref[1];
struct software_node_ref_args gpio0_ref[1];
struct software_node_ref_args gpio1_ref[1];
struct software_node_ref_args gpio2_ref[1];
struct software_node_ref_args gpio3_ref[1];
struct software_node_ref_args gpio4_ref[1];
struct software_node_ref_args gpio5_ref[1];
struct software_node_ref_args sfp_ref[1];
struct software_node swnodes[SWNODE_MAX];
const struct software_node *group[SWNODE_MAX + 1];
};
struct txgbe {
struct wx *wx;
struct txgbe_nodes nodes;
struct dw_xpcs *xpcs;
struct phylink *phylink;
struct platform_device *sfp_dev;
struct platform_device *i2c_dev;
struct clk_lookup *clock;
struct clk *clk;
struct gpio_chip *gpio;
};
#endif /* _TXGBE_TYPE_H_ */

View File

@ -64,6 +64,16 @@ static const int xpcs_xlgmii_features[] = {
__ETHTOOL_LINK_MODE_MASK_NBITS,
};
static const int xpcs_10gbaser_features[] = {
ETHTOOL_LINK_MODE_Pause_BIT,
ETHTOOL_LINK_MODE_Asym_Pause_BIT,
ETHTOOL_LINK_MODE_10000baseSR_Full_BIT,
ETHTOOL_LINK_MODE_10000baseLR_Full_BIT,
ETHTOOL_LINK_MODE_10000baseLRM_Full_BIT,
ETHTOOL_LINK_MODE_10000baseER_Full_BIT,
__ETHTOOL_LINK_MODE_MASK_NBITS,
};
static const int xpcs_sgmii_features[] = {
ETHTOOL_LINK_MODE_Pause_BIT,
ETHTOOL_LINK_MODE_Asym_Pause_BIT,
@ -106,6 +116,10 @@ static const phy_interface_t xpcs_xlgmii_interfaces[] = {
PHY_INTERFACE_MODE_XLGMII,
};
static const phy_interface_t xpcs_10gbaser_interfaces[] = {
PHY_INTERFACE_MODE_10GBASER,
};
static const phy_interface_t xpcs_sgmii_interfaces[] = {
PHY_INTERFACE_MODE_SGMII,
};
@ -123,6 +137,7 @@ enum {
DW_XPCS_USXGMII,
DW_XPCS_10GKR,
DW_XPCS_XLGMII,
DW_XPCS_10GBASER,
DW_XPCS_SGMII,
DW_XPCS_1000BASEX,
DW_XPCS_2500BASEX,
@ -246,6 +261,7 @@ static int xpcs_soft_reset(struct dw_xpcs *xpcs,
switch (compat->an_mode) {
case DW_AN_C73:
case DW_10GBASER:
dev = MDIO_MMD_PCS;
break;
case DW_AN_C37_SGMII:
@ -802,6 +818,8 @@ int xpcs_do_config(struct dw_xpcs *xpcs, phy_interface_t interface,
return -ENODEV;
switch (compat->an_mode) {
case DW_10GBASER:
break;
case DW_AN_C73:
if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, advertising)) {
ret = xpcs_config_aneg_c73(xpcs, compat);
@ -998,6 +1016,9 @@ static void xpcs_get_state(struct phylink_pcs *pcs,
return;
switch (compat->an_mode) {
case DW_10GBASER:
phylink_mii_c45_pcs_get_state(xpcs->mdiodev, state);
break;
case DW_AN_C73:
ret = xpcs_get_state_c73(xpcs, state, compat);
if (ret) {
@ -1153,6 +1174,12 @@ static const struct xpcs_compat synopsys_xpcs_compat[DW_XPCS_INTERFACE_MAX] = {
.num_interfaces = ARRAY_SIZE(xpcs_xlgmii_interfaces),
.an_mode = DW_AN_C73,
},
[DW_XPCS_10GBASER] = {
.supported = xpcs_10gbaser_features,
.interface = xpcs_10gbaser_interfaces,
.num_interfaces = ARRAY_SIZE(xpcs_10gbaser_interfaces),
.an_mode = DW_10GBASER,
},
[DW_XPCS_SGMII] = {
.supported = xpcs_sgmii_features,
.interface = xpcs_sgmii_interfaces,
@ -1256,6 +1283,9 @@ static struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev,
}
xpcs->pcs.ops = &xpcs_phylink_ops;
if (compat->an_mode == DW_10GBASER)
return xpcs;
xpcs->pcs.poll = true;
ret = xpcs_soft_reset(xpcs, compat);

View File

@ -18,6 +18,7 @@
#define DW_AN_C37_SGMII 2
#define DW_2500BASEX 3
#define DW_AN_C37_1000BASEX 4
#define DW_10GBASER 5
struct xpcs_id;