// SPDX-License-Identifier: (GPL-2.0+ OR MIT) /* * Copyright (c) 2019 Microsemi Corporation */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mscc_xfer.h" #include "mscc_mac_table.h" #include "mscc_miim.h" #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]; }; 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 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); } 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_plat(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_plat(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; 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; addr_base = res.start; 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] = mscc_mdiobus_init(miim, &miim_count, 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_NA); 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 = sizeof(struct serval_private), .plat_auto = sizeof(struct eth_pdata), };