diff options
Diffstat (limited to 'drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c')
| -rw-r--r-- | drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c new file mode 100644 index 000000000000..7dbcf41750c1 --- /dev/null +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_aml.c @@ -0,0 +1,385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2015 - 2025 Beijing WangXun Technology Co., Ltd. */ + +#include <linux/phylink.h> +#include <linux/iopoll.h> +#include <linux/pci.h> +#include <linux/phy.h> + +#include "../libwx/wx_type.h" +#include "../libwx/wx_lib.h" +#include "../libwx/wx_ptp.h" +#include "../libwx/wx_hw.h" +#include "../libwx/wx_sriov.h" +#include "txgbe_type.h" +#include "txgbe_aml.h" +#include "txgbe_hw.h" + +void txgbe_gpio_init_aml(struct wx *wx) +{ + u32 status; + + wr32(wx, WX_GPIO_INTTYPE_LEVEL, TXGBE_GPIOBIT_2 | TXGBE_GPIOBIT_3); + wr32(wx, WX_GPIO_INTEN, TXGBE_GPIOBIT_2 | TXGBE_GPIOBIT_3); + + status = rd32(wx, WX_GPIO_INTSTATUS); + for (int i = 0; i < 6; i++) { + if (status & BIT(i)) + wr32(wx, WX_GPIO_EOI, BIT(i)); + } +} + +irqreturn_t txgbe_gpio_irq_handler_aml(int irq, void *data) +{ + struct txgbe *txgbe = data; + struct wx *wx = txgbe->wx; + u32 status; + + wr32(wx, WX_GPIO_INTMASK, 0xFF); + status = rd32(wx, WX_GPIO_INTSTATUS); + if (status & TXGBE_GPIOBIT_2) { + set_bit(WX_FLAG_NEED_SFP_RESET, wx->flags); + wr32(wx, WX_GPIO_EOI, TXGBE_GPIOBIT_2); + wx_service_event_schedule(wx); + } + if (status & TXGBE_GPIOBIT_3) { + set_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags); + wx_service_event_schedule(wx); + wr32(wx, WX_GPIO_EOI, TXGBE_GPIOBIT_3); + } + + wr32(wx, WX_GPIO_INTMASK, 0); + return IRQ_HANDLED; +} + +int txgbe_test_hostif(struct wx *wx) +{ + struct txgbe_hic_ephy_getlink buffer; + + if (wx->mac.type != wx_mac_aml) + return 0; + + buffer.hdr.cmd = FW_PHY_GET_LINK_CMD; + buffer.hdr.buf_len = sizeof(struct txgbe_hic_ephy_getlink) - + sizeof(struct wx_hic_hdr); + buffer.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; + + return wx_host_interface_command(wx, (u32 *)&buffer, sizeof(buffer), + WX_HI_COMMAND_TIMEOUT, true); +} + +static int txgbe_identify_sfp_hostif(struct wx *wx, struct txgbe_hic_i2c_read *buffer) +{ + buffer->hdr.cmd = FW_READ_SFP_INFO_CMD; + buffer->hdr.buf_len = sizeof(struct txgbe_hic_i2c_read) - + sizeof(struct wx_hic_hdr); + buffer->hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; + + return wx_host_interface_command(wx, (u32 *)buffer, + sizeof(struct txgbe_hic_i2c_read), + WX_HI_COMMAND_TIMEOUT, true); +} + +static int txgbe_set_phy_link_hostif(struct wx *wx, int speed, int autoneg, int duplex) +{ + struct txgbe_hic_ephy_setlink buffer; + + buffer.hdr.cmd = FW_PHY_SET_LINK_CMD; + buffer.hdr.buf_len = sizeof(struct txgbe_hic_ephy_setlink) - + sizeof(struct wx_hic_hdr); + buffer.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED; + + switch (speed) { + case SPEED_25000: + buffer.speed = TXGBE_LINK_SPEED_25GB_FULL; + break; + case SPEED_10000: + buffer.speed = TXGBE_LINK_SPEED_10GB_FULL; + break; + } + + buffer.fec_mode = TXGBE_PHY_FEC_AUTO; + buffer.autoneg = autoneg; + buffer.duplex = duplex; + + return wx_host_interface_command(wx, (u32 *)&buffer, sizeof(buffer), + WX_HI_COMMAND_TIMEOUT, true); +} + +static void txgbe_get_link_capabilities(struct wx *wx) +{ + struct txgbe *txgbe = wx->priv; + + if (test_bit(PHY_INTERFACE_MODE_25GBASER, txgbe->sfp_interfaces)) + wx->adv_speed = SPEED_25000; + else if (test_bit(PHY_INTERFACE_MODE_10GBASER, txgbe->sfp_interfaces)) + wx->adv_speed = SPEED_10000; + else + wx->adv_speed = SPEED_UNKNOWN; + + wx->adv_duplex = wx->adv_speed == SPEED_UNKNOWN ? + DUPLEX_HALF : DUPLEX_FULL; +} + +static void txgbe_get_phy_link(struct wx *wx, int *speed) +{ + u32 status; + + status = rd32(wx, TXGBE_CFG_PORT_ST); + if (!(status & TXGBE_CFG_PORT_ST_LINK_UP)) + *speed = SPEED_UNKNOWN; + else if (status & TXGBE_CFG_PORT_ST_LINK_AML_25G) + *speed = SPEED_25000; + else if (status & TXGBE_CFG_PORT_ST_LINK_AML_10G) + *speed = SPEED_10000; + else + *speed = SPEED_UNKNOWN; +} + +int txgbe_set_phy_link(struct wx *wx) +{ + int speed, err; + u32 gpio; + + /* Check RX signal */ + gpio = rd32(wx, WX_GPIO_EXT); + if (gpio & TXGBE_GPIOBIT_3) + return -ENODEV; + + txgbe_get_link_capabilities(wx); + if (wx->adv_speed == SPEED_UNKNOWN) + return -ENODEV; + + txgbe_get_phy_link(wx, &speed); + if (speed == wx->adv_speed) + return 0; + + err = txgbe_set_phy_link_hostif(wx, wx->adv_speed, 0, wx->adv_duplex); + if (err) { + wx_err(wx, "Failed to setup link\n"); + return err; + } + + return 0; +} + +static int txgbe_sfp_to_linkmodes(struct wx *wx, struct txgbe_sfp_id *id) +{ + __ETHTOOL_DECLARE_LINK_MODE_MASK(modes) = { 0, }; + DECLARE_PHY_INTERFACE_MASK(interfaces); + struct txgbe *txgbe = wx->priv; + + if (id->com_25g_code & (TXGBE_SFF_25GBASESR_CAPABLE | + TXGBE_SFF_25GBASEER_CAPABLE | + TXGBE_SFF_25GBASELR_CAPABLE)) { + phylink_set(modes, 25000baseSR_Full); + __set_bit(PHY_INTERFACE_MODE_25GBASER, interfaces); + } + if (id->com_10g_code & TXGBE_SFF_10GBASESR_CAPABLE) { + phylink_set(modes, 10000baseSR_Full); + __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces); + } + if (id->com_10g_code & TXGBE_SFF_10GBASELR_CAPABLE) { + phylink_set(modes, 10000baseLR_Full); + __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces); + } + + if (phy_interface_empty(interfaces)) { + wx_err(wx, "unsupported SFP module\n"); + return -EINVAL; + } + + phylink_set(modes, Pause); + phylink_set(modes, Asym_Pause); + phylink_set(modes, FIBRE); + txgbe->link_port = PORT_FIBRE; + + if (!linkmode_equal(txgbe->sfp_support, modes)) { + linkmode_copy(txgbe->sfp_support, modes); + phy_interface_and(txgbe->sfp_interfaces, + wx->phylink_config.supported_interfaces, + interfaces); + linkmode_copy(txgbe->advertising, modes); + + set_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags); + } + + return 0; +} + +int txgbe_identify_sfp(struct wx *wx) +{ + struct txgbe_hic_i2c_read buffer; + struct txgbe_sfp_id *id; + int err = 0; + u32 gpio; + + gpio = rd32(wx, WX_GPIO_EXT); + if (gpio & TXGBE_GPIOBIT_2) + return -ENODEV; + + err = txgbe_identify_sfp_hostif(wx, &buffer); + if (err) { + wx_err(wx, "Failed to identify SFP module\n"); + return err; + } + + id = &buffer.id; + if (id->identifier != TXGBE_SFF_IDENTIFIER_SFP) { + wx_err(wx, "Invalid SFP module\n"); + return -ENODEV; + } + + err = txgbe_sfp_to_linkmodes(wx, id); + if (err) + return err; + + if (gpio & TXGBE_GPIOBIT_3) + set_bit(WX_FLAG_NEED_LINK_CONFIG, wx->flags); + + return 0; +} + +void txgbe_setup_link(struct wx *wx) +{ + struct txgbe *txgbe = wx->priv; + + phy_interface_zero(txgbe->sfp_interfaces); + linkmode_zero(txgbe->sfp_support); + + txgbe_identify_sfp(wx); +} + +static void txgbe_get_link_state(struct phylink_config *config, + struct phylink_link_state *state) +{ + struct wx *wx = phylink_to_wx(config); + int speed; + + txgbe_get_phy_link(wx, &speed); + state->link = speed != SPEED_UNKNOWN; + state->speed = speed; + state->duplex = state->link ? DUPLEX_FULL : DUPLEX_UNKNOWN; +} + +static void txgbe_reconfig_mac(struct wx *wx) +{ + u32 wdg, fc; + + wdg = rd32(wx, WX_MAC_WDG_TIMEOUT); + fc = rd32(wx, WX_MAC_RX_FLOW_CTRL); + + wr32(wx, WX_MIS_RST, TXGBE_MIS_RST_MAC_RST(wx->bus.func)); + /* wait for MAC reset complete */ + usleep_range(1000, 1500); + + wr32m(wx, TXGBE_MAC_MISC_CTL, TXGBE_MAC_MISC_CTL_LINK_STS_MOD, + TXGBE_MAC_MISC_CTL_LINK_BOTH); + wx_reset_mac(wx); + + wr32(wx, WX_MAC_WDG_TIMEOUT, wdg); + wr32(wx, WX_MAC_RX_FLOW_CTRL, fc); +} + +static void txgbe_mac_link_up_aml(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 = phylink_to_wx(config); + u32 txcfg; + + wx_fc_enable(wx, tx_pause, rx_pause); + + txgbe_reconfig_mac(wx); + + txcfg = rd32(wx, TXGBE_AML_MAC_TX_CFG); + txcfg &= ~TXGBE_AML_MAC_TX_CFG_SPEED_MASK; + + switch (speed) { + case SPEED_25000: + txcfg |= TXGBE_AML_MAC_TX_CFG_SPEED_25G; + break; + case SPEED_10000: + txcfg |= TXGBE_AML_MAC_TX_CFG_SPEED_10G; + break; + default: + break; + } + + wr32m(wx, WX_MAC_RX_CFG, WX_MAC_RX_CFG_RE, WX_MAC_RX_CFG_RE); + wr32(wx, TXGBE_AML_MAC_TX_CFG, txcfg | TXGBE_AML_MAC_TX_CFG_TE); + + wx->speed = speed; + wx->last_rx_ptp_check = jiffies; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); + /* ping all the active vfs to let them know we are going up */ + wx_ping_all_vfs_with_link_status(wx, true); +} + +static void txgbe_mac_link_down_aml(struct phylink_config *config, + unsigned int mode, + phy_interface_t interface) +{ + struct wx *wx = phylink_to_wx(config); + + wr32m(wx, TXGBE_AML_MAC_TX_CFG, TXGBE_AML_MAC_TX_CFG_TE, 0); + wr32m(wx, WX_MAC_RX_CFG, WX_MAC_RX_CFG_RE, 0); + + wx->speed = SPEED_UNKNOWN; + if (test_bit(WX_STATE_PTP_RUNNING, wx->state)) + wx_ptp_reset_cyclecounter(wx); + /* ping all the active vfs to let them know we are going down */ + wx_ping_all_vfs_with_link_status(wx, false); +} + +static void txgbe_mac_config_aml(struct phylink_config *config, unsigned int mode, + const struct phylink_link_state *state) +{ +} + +static const struct phylink_mac_ops txgbe_mac_ops_aml = { + .mac_config = txgbe_mac_config_aml, + .mac_link_down = txgbe_mac_link_down_aml, + .mac_link_up = txgbe_mac_link_up_aml, +}; + +int txgbe_phylink_init_aml(struct txgbe *txgbe) +{ + struct phylink_link_state state; + struct phylink_config *config; + struct wx *wx = txgbe->wx; + phy_interface_t phy_mode; + struct phylink *phylink; + int err; + + config = &wx->phylink_config; + config->dev = &wx->netdev->dev; + config->type = PHYLINK_NETDEV; + config->mac_capabilities = MAC_25000FD | MAC_10000FD | + MAC_SYM_PAUSE | MAC_ASYM_PAUSE; + config->get_fixed_state = txgbe_get_link_state; + + phy_mode = PHY_INTERFACE_MODE_25GBASER; + __set_bit(PHY_INTERFACE_MODE_25GBASER, config->supported_interfaces); + __set_bit(PHY_INTERFACE_MODE_10GBASER, config->supported_interfaces); + + phylink = phylink_create(config, NULL, phy_mode, &txgbe_mac_ops_aml); + if (IS_ERR(phylink)) + return PTR_ERR(phylink); + + state.speed = SPEED_25000; + state.duplex = DUPLEX_FULL; + err = phylink_set_fixed_link(phylink, &state); + if (err) { + wx_err(wx, "Failed to set fixed link\n"); + return err; + } + + wx->phylink = phylink; + + return 0; +} |