Add network driver for Microsemi Ethernet switch. It is present on Serval SoCs.
Signed-off-by: Horatiu Vultur horatiu.vultur@microchip.com --- drivers/net/mscc_eswitch/Kconfig | 7 + drivers/net/mscc_eswitch/Makefile | 1 + drivers/net/mscc_eswitch/serval_switch.c | 703 +++++++++++++++++++++++++++++++ 3 files changed, 711 insertions(+) create mode 100644 drivers/net/mscc_eswitch/serval_switch.c
diff --git a/drivers/net/mscc_eswitch/Kconfig b/drivers/net/mscc_eswitch/Kconfig index 6359d0b..80dd22f 100644 --- a/drivers/net/mscc_eswitch/Kconfig +++ b/drivers/net/mscc_eswitch/Kconfig @@ -29,3 +29,10 @@ config MSCC_SERVALT_SWITCH select PHYLIB help This driver supports the Servalt network switch device. + +config MSCC_SERVAL_SWITCH + bool "Serval switch driver" + depends on DM_ETH && ARCH_MSCC + select PHYLIB + help + This driver supports the Serval network switch device. diff --git a/drivers/net/mscc_eswitch/Makefile b/drivers/net/mscc_eswitch/Makefile index bffd8ec..6aa59ef 100644 --- a/drivers/net/mscc_eswitch/Makefile +++ b/drivers/net/mscc_eswitch/Makefile @@ -3,3 +3,4 @@ obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o mscc_miim.o mscc_xfer.o mscc obj-$(CONFIG_MSCC_LUTON_SWITCH) += luton_switch.o mscc_miim.o mscc_xfer.o mscc_mac_table.o obj-$(CONFIG_MSCC_JR2_SWITCH) += jr2_switch.o mscc_xfer.o obj-$(CONFIG_MSCC_SERVALT_SWITCH) += servalt_switch.o mscc_xfer.o +obj-$(CONFIG_MSCC_SERVAL_SWITCH) += serval_switch.o mscc_xfer.o mscc_mac_table.o diff --git a/drivers/net/mscc_eswitch/serval_switch.c b/drivers/net/mscc_eswitch/serval_switch.c new file mode 100644 index 0000000..2559f5d --- /dev/null +++ b/drivers/net/mscc_eswitch/serval_switch.c @@ -0,0 +1,703 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2019 Microsemi Corporation + */ + +#include <common.h> +#include <config.h> +#include <dm.h> +#include <dm/of_access.h> +#include <dm/of_addr.h> +#include <fdt_support.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <miiphy.h> +#include <net.h> +#include <wait_bit.h> + +#include "mscc_xfer.h" +#include "mscc_mac_table.h" + +#define GCB_MIIM_MII_STATUS 0x0 +#define GCB_MIIM_STAT_BUSY BIT(3) +#define GCB_MIIM_MII_CMD 0x8 +#define GCB_MIIM_MII_CMD_OPR_WRITE BIT(1) +#define GCB_MIIM_MII_CMD_OPR_READ BIT(2) +#define GCB_MIIM_MII_CMD_WRDATA(x) ((x) << 4) +#define GCB_MIIM_MII_CMD_REGAD(x) ((x) << 20) +#define GCB_MIIM_MII_CMD_PHYAD(x) ((x) << 25) +#define GCB_MIIM_MII_CMD_VLD BIT(31) +#define GCB_MIIM_DATA 0xC +#define GCB_MIIM_DATA_ERROR (0x2 << 16) + +#define ANA_PORT_VLAN_CFG(x) (0xc000 + 0x100 * (x)) +#define ANA_PORT_VLAN_CFG_AWARE_ENA BIT(20) +#define ANA_PORT_VLAN_CFG_POP_CNT(x) ((x) << 18) +#define ANA_PORT_PORT_CFG(x) (0xc070 + 0x100 * (x)) +#define ANA_PORT_PORT_CFG_RECV_ENA BIT(6) +#define ANA_PGID(x) (0x9c00 + 4 * (x)) + +#define HSIO_ANA_SERDES1G_DES_CFG 0x3c +#define HSIO_ANA_SERDES1G_DES_CFG_BW_HYST(x) ((x) << 1) +#define HSIO_ANA_SERDES1G_DES_CFG_BW_ANA(x) ((x) << 5) +#define HSIO_ANA_SERDES1G_DES_CFG_MBTR_CTRL(x) ((x) << 8) +#define HSIO_ANA_SERDES1G_DES_CFG_PHS_CTRL(x) ((x) << 13) +#define HSIO_ANA_SERDES1G_IB_CFG 0x40 +#define HSIO_ANA_SERDES1G_IB_CFG_RESISTOR_CTRL(x) (x) +#define HSIO_ANA_SERDES1G_IB_CFG_EQ_GAIN(x) ((x) << 6) +#define HSIO_ANA_SERDES1G_IB_CFG_ENA_OFFSET_COMP BIT(9) +#define HSIO_ANA_SERDES1G_IB_CFG_ENA_DETLEV BIT(11) +#define HSIO_ANA_SERDES1G_IB_CFG_ENA_CMV_TERM BIT(13) +#define HSIO_ANA_SERDES1G_IB_CFG_DET_LEV(x) ((x) << 19) +#define HSIO_ANA_SERDES1G_IB_CFG_ACJTAG_HYST(x) ((x) << 24) +#define HSIO_ANA_SERDES1G_OB_CFG 0x44 +#define HSIO_ANA_SERDES1G_OB_CFG_RESISTOR_CTRL(x) (x) +#define HSIO_ANA_SERDES1G_OB_CFG_VCM_CTRL(x) ((x) << 4) +#define HSIO_ANA_SERDES1G_OB_CFG_CMM_BIAS_CTRL(x) ((x) << 10) +#define HSIO_ANA_SERDES1G_OB_CFG_AMP_CTRL(x) ((x) << 13) +#define HSIO_ANA_SERDES1G_OB_CFG_SLP(x) ((x) << 17) +#define HSIO_ANA_SERDES1G_SER_CFG 0x48 +#define HSIO_ANA_SERDES1G_COMMON_CFG 0x4c +#define HSIO_ANA_SERDES1G_COMMON_CFG_IF_MODE BIT(0) +#define HSIO_ANA_SERDES1G_COMMON_CFG_ENA_LANE BIT(18) +#define HSIO_ANA_SERDES1G_COMMON_CFG_SYS_RST BIT(31) +#define HSIO_ANA_SERDES1G_PLL_CFG 0x50 +#define HSIO_ANA_SERDES1G_PLL_CFG_FSM_ENA BIT(7) +#define HSIO_ANA_SERDES1G_PLL_CFG_FSM_CTRL_DATA(x) ((x) << 8) +#define HSIO_ANA_SERDES1G_PLL_CFG_ENA_RC_DIV2 BIT(21) +#define HSIO_DIG_SERDES1G_DFT_CFG0 0x58 +#define HSIO_DIG_SERDES1G_MISC_CFG 0x6c +#define HSIO_DIG_SERDES1G_MISC_CFG_LANE_RST BIT(0) +#define HSIO_MCB_SERDES1G_CFG 0x74 +#define HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT BIT(31) +#define HSIO_MCB_SERDES1G_CFG_ADDR(x) (x) + +#define SYS_FRM_AGING 0x584 +#define SYS_FRM_AGING_ENA BIT(20) +#define SYS_SYSTEM_RST_CFG 0x518 +#define SYS_SYSTEM_RST_MEM_INIT BIT(5) +#define SYS_SYSTEM_RST_MEM_ENA BIT(6) +#define SYS_SYSTEM_RST_CORE_ENA BIT(7) +#define SYS_PORT_MODE(x) (0x524 + 0x4 * (x)) +#define SYS_PORT_MODE_INCL_INJ_HDR(x) ((x) << 4) +#define SYS_PORT_MODE_INCL_XTR_HDR(x) ((x) << 2) +#define SYS_PAUSE_CFG(x) (0x65c + 0x4 * (x)) +#define SYS_PAUSE_CFG_PAUSE_ENA BIT(0) + +#define QSYS_SWITCH_PORT_MODE(x) (0x15a34 + 0x4 * (x)) +#define QSYS_SWITCH_PORT_MODE_PORT_ENA BIT(13) +#define QSYS_EGR_NO_SHARING 0x15a9c +#define QSYS_QMAP 0x15adc + +/* Port registers */ +#define DEV_CLOCK_CFG 0x0 +#define DEV_CLOCK_CFG_LINK_SPEED_1000 1 +#define DEV_MAC_ENA_CFG 0x10 +#define DEV_MAC_ENA_CFG_RX_ENA BIT(4) +#define DEV_MAC_ENA_CFG_TX_ENA BIT(0) +#define DEV_MAC_IFG_CFG 0x24 +#define DEV_MAC_IFG_CFG_TX_IFG(x) ((x) << 8) +#define DEV_MAC_IFG_CFG_RX_IFG2(x) ((x) << 4) +#define DEV_MAC_IFG_CFG_RX_IFG1(x) (x) +#define PCS1G_CFG 0x3c +#define PCS1G_MODE_CFG_SGMII_MODE_ENA BIT(0) +#define PCS1G_MODE_CFG 0x40 +#define PCS1G_SD_CFG 0x44 +#define PCS1G_ANEG_CFG 0x48 +#define PCS1G_ANEG_CFG_ADV_ABILITY(x) ((x) << 16) + +#define QS_XTR_GRP_CFG(x) (4 * (x)) +#define QS_XTR_GRP_CFG_MODE(x) ((x) << 2) +#define QS_XTR_GRP_CFG_BYTE_SWAP BIT(0) +#define QS_INJ_GRP_CFG(x) (0x24 + (x) * 4) +#define QS_INJ_GRP_CFG_MODE(x) ((x) << 2) +#define QS_INJ_GRP_CFG_BYTE_SWAP BIT(0) + +#define IFH_INJ_BYPASS BIT(31) +#define IFH_TAG_TYPE_C 0 +#define MAC_VID 1 +#define CPU_PORT 11 +#define INTERNAL_PORT_MSK 0xFF +#define IFH_LEN 4 +#define ETH_ALEN 6 +#define PGID_BROADCAST 13 +#define PGID_UNICAST 14 + +static const char *const regs_names[] = { + "port0", "port1", "port2", "port3", "port4", "port5", "port6", + "port7", "port8", "port9", "port10", + "ana", "qs", "qsys", "rew", "sys", "hsio", +}; + +#define REGS_NAMES_COUNT ARRAY_SIZE(regs_names) + 1 +#define MAX_PORT 11 + +enum serval_ctrl_regs { + ANA = MAX_PORT, + QS, + QSYS, + REW, + SYS, + HSIO, +}; + +#define SERVAL_MIIM_BUS_COUNT 2 + +struct serval_phy_port_t { + size_t phy_addr; + struct mii_dev *bus; + u8 serdes_index; + u8 phy_mode; +}; + +struct serval_private { + void __iomem *regs[REGS_NAMES_COUNT]; + struct mii_dev *bus[SERVAL_MIIM_BUS_COUNT]; + struct serval_phy_port_t ports[MAX_PORT]; +}; + +struct mscc_miim_dev { + void __iomem *regs; + phys_addr_t miim_base; + unsigned long miim_size; + struct mii_dev *bus; +}; + +static const unsigned long serval_regs_qs[] = { + [MSCC_QS_XTR_RD] = 0x8, + [MSCC_QS_XTR_FLUSH] = 0x18, + [MSCC_QS_XTR_DATA_PRESENT] = 0x1c, + [MSCC_QS_INJ_WR] = 0x2c, + [MSCC_QS_INJ_CTRL] = 0x34, +}; + +static const unsigned long serval_regs_ana_table[] = { + [MSCC_ANA_TABLES_MACHDATA] = 0x9b34, + [MSCC_ANA_TABLES_MACLDATA] = 0x9b38, + [MSCC_ANA_TABLES_MACACCESS] = 0x9b3c, +}; + +static struct mscc_miim_dev miim[SERVAL_MIIM_BUS_COUNT]; +static int miim_count = -1; + +static int mscc_miim_wait_ready(struct mscc_miim_dev *miim) +{ + return wait_for_bit_le32(miim->regs + GCB_MIIM_MII_STATUS, + GCB_MIIM_STAT_BUSY, false, 250, false); +} + +static int mscc_miim_read(struct mii_dev *bus, int addr, int devad, int reg) +{ + struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv; + u32 val; + int ret; + + ret = mscc_miim_wait_ready(miim); + if (ret) + goto out; + + writel(GCB_MIIM_MII_CMD_VLD | GCB_MIIM_MII_CMD_PHYAD(addr) | + GCB_MIIM_MII_CMD_REGAD(reg) | GCB_MIIM_MII_CMD_OPR_READ, + miim->regs + GCB_MIIM_MII_CMD); + + ret = mscc_miim_wait_ready(miim); + if (ret) + goto out; + + val = readl(miim->regs + GCB_MIIM_DATA); + if (val & GCB_MIIM_DATA_ERROR) { + ret = -EIO; + goto out; + } + + ret = val & 0xFFFF; + out: + return ret; +} + +static int mscc_miim_write(struct mii_dev *bus, int addr, int devad, int reg, + u16 val) +{ + struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv; + int ret; + + ret = mscc_miim_wait_ready(miim); + if (ret < 0) + goto out; + + writel(GCB_MIIM_MII_CMD_VLD | GCB_MIIM_MII_CMD_PHYAD(addr) | + GCB_MIIM_MII_CMD_REGAD(reg) | GCB_MIIM_MII_CMD_WRDATA(val) | + GCB_MIIM_MII_CMD_OPR_WRITE, miim->regs + GCB_MIIM_MII_CMD); + out: + return ret; +} + +static struct mii_dev *serval_mdiobus_init(phys_addr_t miim_base, + unsigned long miim_size) +{ + struct mii_dev *bus; + + bus = mdio_alloc(); + if (!bus) + return NULL; + + ++miim_count; + sprintf(bus->name, "miim-bus%d", miim_count); + + miim[miim_count].regs = ioremap(miim_base, miim_size); + miim[miim_count].miim_base = miim_base; + miim[miim_count].miim_size = miim_size; + bus->priv = &miim[miim_count]; + bus->read = mscc_miim_read; + bus->write = mscc_miim_write; + + if (mdio_register(bus)) + return NULL; + + miim[miim_count].bus = bus; + return bus; +} + +static void serval_cpu_capture_setup(struct serval_private *priv) +{ + int i; + + /* map the 8 CPU extraction queues to CPU port 11 */ + writel(0, priv->regs[QSYS] + QSYS_QMAP); + + for (i = 0; i <= 1; i++) { + /* + * Do byte-swap and expect status after last data word + * Extraction: Mode: manual extraction) | Byte_swap + */ + writel(QS_XTR_GRP_CFG_MODE(1) | QS_XTR_GRP_CFG_BYTE_SWAP, + priv->regs[QS] + QS_XTR_GRP_CFG(i)); + /* + * Injection: Mode: manual extraction | Byte_swap + */ + writel(QS_INJ_GRP_CFG_MODE(1) | QS_INJ_GRP_CFG_BYTE_SWAP, + priv->regs[QS] + QS_INJ_GRP_CFG(i)); + } + + for (i = 0; i <= 1; i++) + /* Enable IFH insertion/parsing on CPU ports */ + writel(SYS_PORT_MODE_INCL_INJ_HDR(1) | + SYS_PORT_MODE_INCL_XTR_HDR(1), + priv->regs[SYS] + SYS_PORT_MODE(CPU_PORT + i)); + /* + * Setup the CPU port as VLAN aware to support switching frames + * based on tags + */ + writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) | + MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(CPU_PORT)); + + /* Disable learning (only RECV_ENA must be set) */ + writel(ANA_PORT_PORT_CFG_RECV_ENA, + priv->regs[ANA] + ANA_PORT_PORT_CFG(CPU_PORT)); + + /* Enable switching to/from cpu port */ + setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(CPU_PORT), + QSYS_SWITCH_PORT_MODE_PORT_ENA); + + /* No pause on CPU port - not needed (off by default) */ + clrbits_le32(priv->regs[SYS] + SYS_PAUSE_CFG(CPU_PORT), + SYS_PAUSE_CFG_PAUSE_ENA); + + setbits_le32(priv->regs[QSYS] + QSYS_EGR_NO_SHARING, BIT(CPU_PORT)); +} + +static void serval_port_init(struct serval_private *priv, int port) +{ + void __iomem *regs = priv->regs[port]; + + /* Enable PCS */ + writel(PCS1G_MODE_CFG_SGMII_MODE_ENA, regs + PCS1G_CFG); + + /* Disable Signal Detect */ + writel(0, regs + PCS1G_SD_CFG); + + /* Enable MAC RX and TX */ + writel(DEV_MAC_ENA_CFG_RX_ENA | DEV_MAC_ENA_CFG_TX_ENA, + regs + DEV_MAC_ENA_CFG); + + /* Clear sgmii_mode_ena */ + writel(0, regs + PCS1G_MODE_CFG); + + /* + * Clear sw_resolve_ena(bit 0) and set adv_ability to + * something meaningful just in case + */ + writel(PCS1G_ANEG_CFG_ADV_ABILITY(0x20), regs + PCS1G_ANEG_CFG); + + /* Set MAC IFG Gaps */ + writel(DEV_MAC_IFG_CFG_TX_IFG(5) | DEV_MAC_IFG_CFG_RX_IFG1(5) | + DEV_MAC_IFG_CFG_RX_IFG2(1), regs + DEV_MAC_IFG_CFG); + + /* Set link speed and release all resets */ + writel(DEV_CLOCK_CFG_LINK_SPEED_1000, regs + DEV_CLOCK_CFG); + + /* Make VLAN aware for CPU traffic */ + writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) | + MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(port)); + + /* Enable the port in the core */ + setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(port), + QSYS_SWITCH_PORT_MODE_PORT_ENA); +} + +static void serdes_write(void __iomem *base, u32 addr) +{ + u32 data; + + writel(HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT | + HSIO_MCB_SERDES1G_CFG_ADDR(addr), + base + HSIO_MCB_SERDES1G_CFG); + + do { + data = readl(base + HSIO_MCB_SERDES1G_CFG); + } while (data & HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT); + + mdelay(100); +} + +static void serdes1g_setup(void __iomem *base, uint32_t addr, + phy_interface_t interface) +{ + writel(0x0, base + HSIO_ANA_SERDES1G_SER_CFG); + writel(0x0, base + HSIO_DIG_SERDES1G_DFT_CFG0); + writel(HSIO_ANA_SERDES1G_IB_CFG_RESISTOR_CTRL(11) | + HSIO_ANA_SERDES1G_IB_CFG_EQ_GAIN(0) | + HSIO_ANA_SERDES1G_IB_CFG_ENA_OFFSET_COMP | + HSIO_ANA_SERDES1G_IB_CFG_ENA_CMV_TERM | + HSIO_ANA_SERDES1G_IB_CFG_ACJTAG_HYST(1), + base + HSIO_ANA_SERDES1G_IB_CFG); + writel(HSIO_ANA_SERDES1G_DES_CFG_BW_HYST(7) | + HSIO_ANA_SERDES1G_DES_CFG_BW_ANA(6) | + HSIO_ANA_SERDES1G_DES_CFG_MBTR_CTRL(2) | + HSIO_ANA_SERDES1G_DES_CFG_PHS_CTRL(6), + base + HSIO_ANA_SERDES1G_DES_CFG); + writel(HSIO_ANA_SERDES1G_OB_CFG_RESISTOR_CTRL(1) | + HSIO_ANA_SERDES1G_OB_CFG_VCM_CTRL(4) | + HSIO_ANA_SERDES1G_OB_CFG_CMM_BIAS_CTRL(2) | + HSIO_ANA_SERDES1G_OB_CFG_AMP_CTRL(12) | + HSIO_ANA_SERDES1G_OB_CFG_SLP(3), + base + HSIO_ANA_SERDES1G_OB_CFG); + writel(HSIO_ANA_SERDES1G_COMMON_CFG_IF_MODE | + HSIO_ANA_SERDES1G_COMMON_CFG_ENA_LANE, + base + HSIO_ANA_SERDES1G_COMMON_CFG); + writel(HSIO_ANA_SERDES1G_PLL_CFG_FSM_ENA | + HSIO_ANA_SERDES1G_PLL_CFG_FSM_CTRL_DATA(200) | + HSIO_ANA_SERDES1G_PLL_CFG_ENA_RC_DIV2, + base + HSIO_ANA_SERDES1G_PLL_CFG); + writel(HSIO_DIG_SERDES1G_MISC_CFG_LANE_RST, + base + HSIO_DIG_SERDES1G_MISC_CFG); + serdes_write(base, addr); + + writel(HSIO_ANA_SERDES1G_COMMON_CFG_IF_MODE | + HSIO_ANA_SERDES1G_COMMON_CFG_ENA_LANE | + HSIO_ANA_SERDES1G_COMMON_CFG_SYS_RST, + base + HSIO_ANA_SERDES1G_COMMON_CFG); + serdes_write(base, addr); + + writel(0x0, base + HSIO_DIG_SERDES1G_MISC_CFG); + serdes_write(base, addr); +} + +static void serdes_setup(struct serval_private *priv) +{ + size_t mask; + int i = 0; + + for (i = 0; i < MAX_PORT; ++i) { + if (!priv->ports[i].bus) + continue; + + mask = BIT(priv->ports[i].serdes_index); + serdes1g_setup(priv->regs[HSIO], mask, + priv->ports[i].phy_mode); + } +} + +static int serval_switch_init(struct serval_private *priv) +{ + /* Reset switch & memories */ + writel(SYS_SYSTEM_RST_MEM_ENA | SYS_SYSTEM_RST_MEM_INIT, + priv->regs[SYS] + SYS_SYSTEM_RST_CFG); + + if (wait_for_bit_le32(priv->regs[SYS] + SYS_SYSTEM_RST_CFG, + SYS_SYSTEM_RST_MEM_INIT, false, 2000, false)) { + pr_err("Timeout in memory reset\n"); + return -EIO; + } + + /* Enable switch core */ + setbits_le32(priv->regs[SYS] + SYS_SYSTEM_RST_CFG, + SYS_SYSTEM_RST_CORE_ENA); + + serdes_setup(priv); + + return 0; +} + +static int serval_initialize(struct serval_private *priv) +{ + int ret, i; + + /* Initialize switch memories, enable core */ + ret = serval_switch_init(priv); + if (ret) + return ret; + + /* Flush queues */ + mscc_flush(priv->regs[QS], serval_regs_qs); + + /* Setup frame ageing - "2 sec" - The unit is 6.5us on serval */ + writel(SYS_FRM_AGING_ENA | (20000000 / 65), + priv->regs[SYS] + SYS_FRM_AGING); + + for (i = 0; i < MAX_PORT; i++) + serval_port_init(priv, i); + + serval_cpu_capture_setup(priv); + + debug("Ports enabled\n"); + + return 0; +} + +static int serval_write_hwaddr(struct udevice *dev) +{ + struct serval_private *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + + mscc_mac_table_add(priv->regs[ANA], serval_regs_ana_table, + pdata->enetaddr, PGID_UNICAST); + + writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST)); + + return 0; +} + +static int serval_start(struct udevice *dev) +{ + struct serval_private *priv = dev_get_priv(dev); + struct eth_pdata *pdata = dev_get_platdata(dev); + const unsigned char mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, + 0xff }; + int ret; + + ret = serval_initialize(priv); + if (ret) + return ret; + + /* Set MAC address tables entries for CPU redirection */ + mscc_mac_table_add(priv->regs[ANA], serval_regs_ana_table, mac, + PGID_BROADCAST); + + writel(BIT(CPU_PORT) | INTERNAL_PORT_MSK, + priv->regs[ANA] + ANA_PGID(PGID_BROADCAST)); + + /* It should be setup latter in serval_write_hwaddr */ + mscc_mac_table_add(priv->regs[ANA], serval_regs_ana_table, + pdata->enetaddr, PGID_UNICAST); + + writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST)); + return 0; +} + +static void serval_stop(struct udevice *dev) +{ + writel(ICPU_RESET_CORE_RST_PROTECT, BASE_CFG + ICPU_RESET); + writel(PERF_SOFT_RST_SOFT_CHIP_RST, BASE_DEVCPU_GCB + PERF_SOFT_RST); +} + +static int serval_send(struct udevice *dev, void *packet, int length) +{ + struct serval_private *priv = dev_get_priv(dev); + u32 ifh[IFH_LEN]; + u32 *buf = packet; + + /* + * Generate the IFH for frame injection + * + * The IFH is a 128bit-value + * bit 127: bypass the analyzer processing + * bit 57-67: destination mask + * bit 28-29: pop_cnt: 3 disables all rewriting of the frame + * bit 20-27: cpu extraction queue mask + * bit 16: tag type 0: C-tag, 1: S-tag + * bit 0-11: VID + */ + ifh[0] = IFH_INJ_BYPASS; + ifh[1] = (0x07); + ifh[2] = (0x7f) << 25; + ifh[3] = (IFH_TAG_TYPE_C << 16); + + return mscc_send(priv->regs[QS], serval_regs_qs, + ifh, IFH_LEN, buf, length); +} + +static int serval_recv(struct udevice *dev, int flags, uchar **packetp) +{ + struct serval_private *priv = dev_get_priv(dev); + u32 *rxbuf = (u32 *)net_rx_packets[0]; + int byte_cnt = 0; + + byte_cnt = mscc_recv(priv->regs[QS], serval_regs_qs, rxbuf, IFH_LEN, + false); + + *packetp = net_rx_packets[0]; + + return byte_cnt; +} + +static struct mii_dev *get_mdiobus(phys_addr_t base, unsigned long size) +{ + int i = 0; + + for (i = 0; i < SERVAL_MIIM_BUS_COUNT; ++i) + if (miim[i].miim_base == base && miim[i].miim_size == size) + return miim[i].bus; + + return NULL; +} + +static void add_port_entry(struct serval_private *priv, size_t index, + size_t phy_addr, struct mii_dev *bus, + u8 serdes_index, u8 phy_mode) +{ + priv->ports[index].phy_addr = phy_addr; + priv->ports[index].bus = bus; + priv->ports[index].serdes_index = serdes_index; + priv->ports[index].phy_mode = phy_mode; +} + +static int serval_probe(struct udevice *dev) +{ + struct serval_private *priv = dev_get_priv(dev); + int i, ret; + struct resource res; + fdt32_t faddr; + phys_addr_t addr_base; + unsigned long addr_size; + ofnode eth_node, node, mdio_node; + size_t phy_addr; + struct mii_dev *bus; + struct ofnode_phandle_args phandle; + struct phy_device *phy; + + if (!priv) + return -EINVAL; + + /* Get registers and map them to the private structure */ + for (i = 0; i < ARRAY_SIZE(regs_names); i++) { + priv->regs[i] = dev_remap_addr_name(dev, regs_names[i]); + if (!priv->regs[i]) { + debug + ("Error can't get regs base addresses for %s\n", + regs_names[i]); + return -ENOMEM; + } + } + + /* Initialize miim buses */ + memset(&miim, 0x0, sizeof(miim) * SERVAL_MIIM_BUS_COUNT); + + /* iterate all the ports and find out on which bus they are */ + i = 0; + eth_node = dev_read_first_subnode(dev); + for (node = ofnode_first_subnode(eth_node); + ofnode_valid(node); + node = ofnode_next_subnode(node)) { + if (ofnode_read_resource(node, 0, &res)) + return -ENOMEM; + i = res.start; + + ret = ofnode_parse_phandle_with_args(node, "phy-handle", NULL, + 0, 0, &phandle); + if (ret) + continue; + + /* Get phy address on mdio bus */ + if (ofnode_read_resource(phandle.node, 0, &res)) + return -ENOMEM; + phy_addr = res.start; + + /* Get mdio node */ + mdio_node = ofnode_get_parent(phandle.node); + + if (ofnode_read_resource(mdio_node, 0, &res)) + return -ENOMEM; + faddr = cpu_to_fdt32(res.start); + + addr_base = ofnode_translate_address(mdio_node, &faddr); + addr_size = res.end - res.start; + + /* If the bus is new then create a new bus */ + if (!get_mdiobus(addr_base, addr_size)) + priv->bus[miim_count] = + serval_mdiobus_init(addr_base, addr_size); + + /* Connect mdio bus with the port */ + bus = get_mdiobus(addr_base, addr_size); + + /* Get serdes info */ + ret = ofnode_parse_phandle_with_args(node, "phys", NULL, + 3, 0, &phandle); + if (ret) + return -ENOMEM; + + add_port_entry(priv, i, phy_addr, bus, phandle.args[1], + phandle.args[2]); + } + + for (i = 0; i < MAX_PORT; i++) { + if (!priv->ports[i].bus) + continue; + + phy = phy_connect(priv->ports[i].bus, + priv->ports[i].phy_addr, dev, + PHY_INTERFACE_MODE_NONE); + if (phy) + board_phy_config(phy); + } + + return 0; +} + +static int serval_remove(struct udevice *dev) +{ + struct serval_private *priv = dev_get_priv(dev); + int i; + + for (i = 0; i < SERVAL_MIIM_BUS_COUNT; i++) { + mdio_unregister(priv->bus[i]); + mdio_free(priv->bus[i]); + } + + return 0; +} + +static const struct eth_ops serval_ops = { + .start = serval_start, + .stop = serval_stop, + .send = serval_send, + .recv = serval_recv, + .write_hwaddr = serval_write_hwaddr, +}; + +static const struct udevice_id mscc_serval_ids[] = { + {.compatible = "mscc,vsc7418-switch"}, + { /* Sentinel */ } +}; + +U_BOOT_DRIVER(serval) = { + .name = "serval-switch", + .id = UCLASS_ETH, + .of_match = mscc_serval_ids, + .probe = serval_probe, + .remove = serval_remove, + .ops = &serval_ops, + .priv_auto_alloc_size = sizeof(struct serval_private), + .platdata_auto_alloc_size = sizeof(struct eth_pdata), +};