The driver sets up the switch at probe allowing traffic though. Both the switch as a whole and the ports are registered as network devices in U-Boot, although neither supports direct I/O in this version. Traffic can originate from SoC though one of the internally linked ENETC interfaces, external ports can also be used in basic switching mode too.

Signed-off-by: Alex Marginean alexm.osslist@gmail.com --- drivers/net/Kconfig | 7 + drivers/net/Makefile | 1 + drivers/net/fsl_enetc.h | 5 + drivers/net/fsl_felix.c | 414 ++++++++++++++++++++++++++++++++++++++++ 4 files changed, 427 insertions(+) create mode 100644 drivers/net/fsl_felix.c

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 084e095229..1669e55fcd 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -603,4 +603,11 @@ config MDIO_MUX_I2CREG an I2C chip. The board it was developed for uses a mux controlled by on-board FPGA which in turn is accessed as a chip over I2C.

+config FSL_FELIX + bool "LS1028 Felix Ethernet switch" + depends on DM_PCI && DM_ETH && DM_MDIO + help + This driver supports the Ethernet switch integrated in LS1028A NXP + SoC. + endif # NETDEVICES diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 71c0889355..96d4a3cdc5 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -81,3 +81,4 @@ obj-y += mscc_eswitch/ obj-$(CONFIG_HIGMACV300_ETH) += higmacv300.o obj-$(CONFIG_MDIO_SANDBOX) += mdio_sandbox.o obj-$(CONFIG_FSL_ENETC) += fsl_enetc.o fsl_enetc_mdio.o +obj-$(CONFIG_FSL_FELIX) += fsl_felix.o diff --git a/drivers/net/fsl_enetc.h b/drivers/net/fsl_enetc.h index 9a36cdad80..29e7781b5e 100644 --- a/drivers/net/fsl_enetc.h +++ b/drivers/net/fsl_enetc.h @@ -200,6 +200,11 @@ struct enetc_priv { /* PCS replicator block for USXGMII */ #define ENETC_PCS_DEVAD_REPL 0x1f

+#define ENETC_PCS_REPL_LINK_TIMER_1 0x12 +#define ENETC_PCS_REPL_LINK_TIMER_1_DEF 0x0003 +#define ENETC_PCS_REPL_LINK_TIMER_2 0x13 +#define ENETC_PCS_REPL_LINK_TIMER_2_DEF 0x06a0 + /* ENETC external MDIO registers */ #define ENETC_MDIO_BASE 0x1c00 #define ENETC_MDIO_CFG 0x00 diff --git a/drivers/net/fsl_felix.c b/drivers/net/fsl_felix.c new file mode 100644 index 0000000000..9689c025ef --- /dev/null +++ b/drivers/net/fsl_felix.c @@ -0,0 +1,414 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Felix ethernet switch driver + * Copyright 2018-2019 NXP + */ + +#include <common.h> +#include <dm.h> +#include <errno.h> +#include <memalign.h> +#include <asm/io.h> +#include <pci.h> +#include <miiphy.h> +#include <dm/lists.h> +#include <ethsw.h> + +/* defines especially around PCS are reused from enetc */ +#include "fsl_enetc.h" + +#define FELIX_PORT_DRV_NAME "felix-port" + +#define PCI_DEVICE_ID_FELIX_ETHSW 0xEEF0 +#define FELIX_PM_IMDIO_BASE 0x8030 + +/* Max port count, including any internal ports */ +#define FELIX_PORT_COUNT 6 + +/* Register map for BAR4 */ +#define FELIX_SYS 0x010000 +#define FELIX_ES0 0x040000 +#define FELIX_IS1 0x050000 +#define FELIX_IS2 0x060000 +#define FELIX_GMII(port) (0x100000 + (port) * 0x10000) +#define FELIX_QSYS 0x200000 + +#define FELIX_SYS_SYSTEM (FELIX_SYS + 0x00000E00) +#define FELIX_SYS_SYSTEM_EN BIT(0) +#define FELIX_SYS_RAM_CTRL (FELIX_SYS + 0x00000F24) +#define FELIX_SYS_RAM_CTRL_INIT BIT(1) + +#define FELIX_ES0_TCAM_CTRL (FELIX_ES0 + 0x000003C0) +#define FELIX_ES0_TCAM_CTRL_EN BIT(0) +#define FELIX_IS1_TCAM_CTRL (FELIX_IS1 + 0x000003C0) +#define FELIX_IS1_TCAM_CTRL_EN BIT(0) +#define FELIX_IS2_TCAM_CTRL (FELIX_IS2 + 0x000003C0) +#define FELIX_IS2_TCAM_CTRL_EN BIT(0) + +#define FELIX_GMII_CLOCK_CFG(port) (FELIX_GMII(port) + 0x00000000) +#define FELIX_GMII_CLOCK_CFG_LINK_1G 1 +#define FELIX_GMII_CLOCK_CFG_LINK_100M 2 +#define FELIX_GMII_CLOCK_CFG_LINK_10M 3 +#define FELIX_GMII_MAC_ENA_CFG(port) (FELIX_GMII(port) + 0x0000001C) +#define FELIX_GMII_MAX_ENA_CFG_TX BIT(0) +#define FELIX_GMII_MAX_ENA_CFG_RX BIT(4) +#define FELIX_GMII_MAC_IFG_CFG(port) (FELIX_GMII(port) + 0x0000001C + 0x14) +#define FELIX_GMII_MAC_IFG_CFG_DEF 0x515 + +#define FELIX_QSYS_SYSTEM (FELIX_QSYS + 0x0000F460) +#define FELIX_QSYS_SYSTEM_SW_PORT_MODE(port) \ + (FELIX_QSYS_SYSTEM + 0x20 + (port) * 4) +#define FELIX_QSYS_SYSTEM_SW_PORT_ENA BIT(14) +#define FELIX_QSYS_SYSTEM_SW_PORT_LOSSY BIT(9) +#define FELIX_QSYS_SYSTEM_SW_PORT_SCH(a) (((a) & 0x3800) << 11) + +/* internal MDIO in BAR0 */ +#define FELIX_PM_IMDIO_BASE 0x8030 + +/* Serdes block on LS1028A */ +#define FELIX_SERDES_BASE 0x1ea0000L +#define FELIX_SERDES_LNATECR0(lane) (FELIX_SERDES_BASE + 0x818 + \ + (lane) * 0x40) +#define FELIX_SERDES_LNATECR0_ADPT_EQ 0x00003000 +#define FELIX_SERDES_SGMIICR1(lane) (FELIX_SERDES_BASE + 0x1804 + \ + (lane) * 0x10) +#define FELIX_SERDES_SGMIICR1_SGPCS BIT(11) +#define FELIX_SERDES_SGMIICR1_MDEV(a) (((a) & 0x1f) << 27) + +#define FELIX_PCS_CTRL 0 +#define FELIX_PCS_CTRL_RST BIT(15) + +struct felix_priv { + void *regs_base; + void *imdio_base; + struct mii_dev imdio; + struct udevice *port[FELIX_PORT_COUNT]; +}; + +/* MDIO wrappers, we're using these to drive internal MDIO to get to serdes */ +static int felix_mdio_read(struct mii_dev *bus, int addr, int devad, int reg) +{ + struct enetc_mdio_priv priv; + + priv.regs_base = bus->priv; + return enetc_mdio_read_priv(&priv, addr, devad, reg); +} + +static int felix_mdio_write(struct mii_dev *bus, int addr, int devad, int reg, + u16 val) +{ + struct enetc_mdio_priv priv; + + priv.regs_base = bus->priv; + return enetc_mdio_write_priv(&priv, addr, devad, reg, val); +} + +/* returns port index for the given udev */ +static int felix_port_index(struct udevice *port) +{ + u32 addr; + + if (ofnode_read_u32(port->node, "reg", &addr)) + return -1; + + return (int)addr; +} + +/* set up serdes for SGMII */ +static int felix_init_sgmii(struct udevice *port, int portno, int if_type) +{ + struct udevice *dev = port->parent; + struct felix_priv *priv = dev_get_priv(dev); + int addr = felix_port_index(port); + bool is2500 = false; + u16 reg; + + /* set up PCS lane address */ + out_le32(FELIX_SERDES_SGMIICR1(portno), FELIX_SERDES_SGMIICR1_SGPCS | + FELIX_SERDES_SGMIICR1_MDEV(portno)); + + if (!priv->imdio.priv) + return 0; + + if (if_type == PHY_INTERFACE_MODE_SGMII_2500) + is2500 = true; + + /* + * Set to SGMII mode, for 1Gbps enable AN, for 2.5Gbps set fixed speed. + * Although fixed speed is 1Gbps, we could be running at 2.5Gbps based + * on PLL configuration. Setting 1G for 2.5G here is counter intuitive + * but intentional. + */ + reg = ENETC_PCS_IF_MODE_SGMII; + reg |= is2500 ? ENETC_PCS_IF_MODE_SPEED_1G : ENETC_PCS_IF_MODE_SGMII_AN; + felix_mdio_write(&priv->imdio, addr, MDIO_DEVAD_NONE, + ENETC_PCS_IF_MODE, reg); + + /* Dev ability - SGMII */ + felix_mdio_write(&priv->imdio, addr, MDIO_DEVAD_NONE, + ENETC_PCS_DEV_ABILITY, ENETC_PCS_DEV_ABILITY_SGMII); + + /* Adjust link timer for SGMII */ + felix_mdio_write(&priv->imdio, addr, MDIO_DEVAD_NONE, + ENETC_PCS_LINK_TIMER1, ENETC_PCS_LINK_TIMER1_VAL); + felix_mdio_write(&priv->imdio, addr, MDIO_DEVAD_NONE, + ENETC_PCS_LINK_TIMER2, ENETC_PCS_LINK_TIMER2_VAL); + + reg = ENETC_PCS_CR_DEF_VAL; + reg |= is2500 ? ENETC_PCS_CR_RST : ENETC_PCS_CR_RESET_AN; + /* restart PCS AN */ + felix_mdio_write(&priv->imdio, addr, MDIO_DEVAD_NONE, + ENETC_PCS_CR, reg); + + return 0; +} + +/* set up MAC and serdes for (Q)SXGMII */ +static int felix_init_sxgmii(struct udevice *port, int portno) +{ + struct udevice *dev = port->parent; + struct felix_priv *priv = dev_get_priv(dev); + int to = 1000; + + /* set up transit equalization control on serdes lane */ + out_le32(FELIX_SERDES_LNATECR0(1), FELIX_SERDES_LNATECR0_ADPT_EQ); + + if (!priv->imdio.priv) + return 0; + + /*reset lane */ + felix_mdio_write(&priv->imdio, portno, MDIO_MMD_PCS, FELIX_PCS_CTRL, + FELIX_PCS_CTRL_RST); + while (felix_mdio_read(&priv->imdio, portno, MDIO_MMD_PCS, + FELIX_PCS_CTRL) & FELIX_PCS_CTRL_RST && + --to) { + mdelay(10); + } + if (felix_mdio_read(&priv->imdio, portno, MDIO_MMD_PCS, + FELIX_PCS_CTRL) & FELIX_PCS_CTRL_RST) + dev_dbg(port, "PCS reset time-out\n"); + + /* Dev ability - SXGMII */ + felix_mdio_write(&priv->imdio, portno, ENETC_PCS_DEVAD_REPL, + ENETC_PCS_DEV_ABILITY, ENETC_PCS_DEV_ABILITY_SXGMII); + + /* Restart PCS AN */ + felix_mdio_write(&priv->imdio, portno, ENETC_PCS_DEVAD_REPL, + ENETC_PCS_CR, + ENETC_PCS_CR_RST | ENETC_PCS_CR_RESET_AN); + felix_mdio_write(&priv->imdio, portno, ENETC_PCS_DEVAD_REPL, + ENETC_PCS_REPL_LINK_TIMER_1, + ENETC_PCS_REPL_LINK_TIMER_1_DEF); + felix_mdio_write(&priv->imdio, portno, ENETC_PCS_DEVAD_REPL, + ENETC_PCS_REPL_LINK_TIMER_2, + ENETC_PCS_REPL_LINK_TIMER_2_DEF); + + return 0; +} + +/* Apply protocol specific configuration to MAC, serdes as needed */ +static void felix_start_pcs(struct udevice *port, int portno) +{ + struct felix_priv *priv = dev_get_priv(port->parent); + const char *if_str; + int if_type; + + if_type = PHY_INTERFACE_MODE_NONE; + + /* + * set up internal MDIO, this is part of ETH PCI function and is + * used to access serdes / internal SoC PHYs. + * We don't currently register it as a MDIO bus as it goes away + * when the interface is removed, so it can't practically be + * used in the console. + */ + priv->imdio.read = felix_mdio_read; + priv->imdio.write = felix_mdio_write; + priv->imdio.priv = priv->imdio_base + FELIX_PM_IMDIO_BASE; + strncpy(priv->imdio.name, port->parent->name, MDIO_NAME_LEN); + + if_str = ofnode_read_string(port->node, "phy-mode"); + if (if_str) + if_type = phy_get_interface_by_name(if_str); + else + dev_dbg(port, + "phy-mode property not found, defaulting to SGMII\n"); + if (if_type < 0) + if_type = PHY_INTERFACE_MODE_NONE; + + switch (if_type) { + case PHY_INTERFACE_MODE_SGMII: + case PHY_INTERFACE_MODE_SGMII_2500: + felix_init_sgmii(port, portno, if_type); + break; + case PHY_INTERFACE_MODE_XGMII: + case PHY_INTERFACE_MODE_XFI: + case PHY_INTERFACE_MODE_USXGMII: + felix_init_sxgmii(port, portno); + break; + }; +} + +void felix_init(struct udevice *dev) +{ + struct felix_priv *priv = dev_get_priv(dev); + ofnode port_node; + void *base = priv->regs_base; + int to = 100; + u32 port; + + dev_dbg(dev, "trying to set up L2 switch\n"); + + /* Init core memories */ + out_le32(base + FELIX_SYS_RAM_CTRL, FELIX_SYS_RAM_CTRL_INIT); + while (in_le32(base + FELIX_SYS_RAM_CTRL) & FELIX_SYS_RAM_CTRL_INIT && + --to) + udelay(10); + if (in_le32(base + FELIX_SYS_RAM_CTRL) & FELIX_SYS_RAM_CTRL_INIT) + dev_dbg(dev, "Time-out waiting for switch memories\n"); + + /* Start switch core, set up ES0, IS1, IS2 */ + out_le32(base + FELIX_SYS_SYSTEM, FELIX_SYS_SYSTEM_EN); + out_le32(base + FELIX_ES0_TCAM_CTRL, FELIX_ES0_TCAM_CTRL_EN); + out_le32(base + FELIX_IS1_TCAM_CTRL, FELIX_IS1_TCAM_CTRL_EN); + out_le32(base + FELIX_IS2_TCAM_CTRL, FELIX_IS2_TCAM_CTRL_EN); + udelay(20); + + /* probe and set up ports */ + dev_for_each_subnode(port_node, dev) { + const char *port_name; + struct udevice *port_dev; + struct phy_device *phy; + + if (!ofnode_is_available(port_node)) + continue; + + if (ofnode_read_u32(port_node, "reg", &port)) { + dev_dbg(dev, "missing reg in %s\n", + ofnode_get_name(port_node)); + continue; + } + if (port >= FELIX_PORT_COUNT) { + dev_dbg(dev, "reg outside of range in %s\n", + ofnode_get_name(port_node)); + continue; + } + + port_name = ofnode_get_name(port_node); + if (device_bind_driver_to_node(dev, FELIX_PORT_DRV_NAME, + port_name, port_node, + &port_dev)) { + dev_dbg(dev, "can't bind driver to dev %s\n", + ofnode_get_name(port_node)); + continue; + } + + priv->port[port] = port_dev; + + /* Set up MAC registers */ + out_le32(base + FELIX_GMII_MAC_ENA_CFG(port), + FELIX_GMII_MAX_ENA_CFG_TX | FELIX_GMII_MAX_ENA_CFG_RX); + out_le32(base + FELIX_GMII_CLOCK_CFG(port), + FELIX_GMII_CLOCK_CFG_LINK_1G); + out_le32(base + FELIX_QSYS_SYSTEM_SW_PORT_MODE(port), + FELIX_QSYS_SYSTEM_SW_PORT_ENA | + FELIX_QSYS_SYSTEM_SW_PORT_LOSSY | + FELIX_QSYS_SYSTEM_SW_PORT_SCH(1)); + + out_le32(base + FELIX_GMII_MAC_IFG_CFG(port), + FELIX_GMII_MAC_IFG_CFG_DEF); + + felix_start_pcs(port_dev, port); + phy = dm_eth_phy_connect(port_dev); + if (!phy) { + dev_dbg(port_dev, "phy connect failed\n"); + continue; + } + + phy_config(phy); + } +} + +/* + * Probe ENETC driver: + * - initialize port and station interface BARs + */ +static int felix_probe(struct udevice *dev) +{ + struct felix_priv *priv = dev_get_priv(dev); + + if (ofnode_valid(dev->node) && !ofnode_is_available(dev->node)) { + dev_dbg(dev, "switch disabled\n"); + return -ENODEV; + } + + priv->imdio_base = dm_pci_map_bar(dev, PCI_BASE_ADDRESS_0, 0); + if (!priv->imdio_base) { + dev_dbg(dev, "failed to map BAR0\n"); + return -EINVAL; + } + + priv->regs_base = dm_pci_map_bar(dev, PCI_BASE_ADDRESS_4, 0); + if (!priv->regs_base) { + dev_dbg(dev, "failed to map BAR4\n"); + return -EINVAL; + } + + /* register internal MDIO for debug */ + if (!miiphy_get_dev_by_name(dev->name)) { + struct mii_dev *mii_bus; + + mii_bus = mdio_alloc(); + mii_bus->read = felix_mdio_read; + mii_bus->write = felix_mdio_write; + mii_bus->priv = priv->imdio_base + FELIX_PM_IMDIO_BASE; + strncpy(mii_bus->name, dev->name, MDIO_NAME_LEN); + mdio_register(mii_bus); + } + + dm_pci_clrset_config16(dev, PCI_COMMAND, 0, PCI_COMMAND_MEMORY); + + /* set up registers */ + felix_init(dev); + + return 0; +} + +/* + * I/O directly through switch ports is not supported in this driver, use + * an ethernet interface connected to the switch instead. + */ +static int felix_start(struct udevice *dev) +{ + return -ENOTSUPP; +} + +static const struct eth_ops felix_port_ops = { + .start = felix_start, +}; + +U_BOOT_DRIVER(felix_port) = { + .name = FELIX_PORT_DRV_NAME, + .id = UCLASS_ETH, + .ops = &felix_port_ops, +}; + +static const struct eth_ops felix_ethsw_ops = { + .start = felix_start, +}; + +U_BOOT_DRIVER(felix_ethsw) = { + .name = "felix_ethsw", + .id = UCLASS_ETH, + .probe = felix_probe, + .ops = &felix_ethsw_ops, + .priv_auto_alloc_size = sizeof(struct felix_priv), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), +}; + +static struct pci_device_id felix_ethsw_ids[] = { + { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_FELIX_ETHSW) }, + {} +}; + +U_BOOT_PCI_DEVICE(felix_ethsw, felix_ethsw_ids);