// 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 "mscc_xfer.h" #include "mscc_miim.h" #define PHY_CFG 0x0 #define PHY_CFG_ENA 0x3 #define PHY_CFG_COMMON_RST BIT(2) #define PHY_CFG_RST (0x3 << 3) #define PHY_STAT 0x4 #define PHY_STAT_SUPERVISOR_COMPLETE BIT(0) #define ANA_AC_RAM_CTRL_RAM_INIT 0x14fdc #define ANA_AC_STAT_GLOBAL_CFG_PORT_RESET 0x15474 #define ANA_CL_PORT_VLAN_CFG(x) (0xa018 + 0xc8 * (x)) #define ANA_CL_PORT_VLAN_CFG_AWARE_ENA BIT(19) #define ANA_CL_PORT_VLAN_CFG_POP_CNT(x) ((x) << 17) #define ANA_L2_COMMON_FWD_CFG 0x18498 #define ANA_L2_COMMON_FWD_CFG_CPU_DMAC_COPY_ENA BIT(6) #define ASM_CFG_STAT_CFG 0xb08 #define ASM_CFG_PORT(x) (0xb74 + 0x4 * (x)) #define ASM_CFG_PORT_NO_PREAMBLE_ENA BIT(8) #define ASM_CFG_PORT_INJ_FORMAT_CFG(x) ((x) << 1) #define ASM_RAM_CTRL_RAM_INIT 0xbfc #define DEV_DEV_CFG_DEV_RST_CTRL 0x0 #define DEV_DEV_CFG_DEV_RST_CTRL_SPEED_SEL(x) ((x) << 20) #define DEV_MAC_CFG_MAC_ENA 0x24 #define DEV_MAC_CFG_MAC_ENA_RX_ENA BIT(4) #define DEV_MAC_CFG_MAC_ENA_TX_ENA BIT(0) #define DEV_MAC_CFG_MAC_IFG 0x3c #define DEV_MAC_CFG_MAC_IFG_TX_IFG(x) ((x) << 8) #define DEV_MAC_CFG_MAC_IFG_RX_IFG2(x) ((x) << 4) #define DEV_MAC_CFG_MAC_IFG_RX_IFG1(x) (x) #define DEV_PCS1G_CFG_PCS1G_CFG 0x48 #define DEV_PCS1G_CFG_PCS1G_CFG_PCS_ENA BIT(0) #define DEV_PCS1G_CFG_PCS1G_MODE 0x4c #define DEV_PCS1G_CFG_PCS1G_SD 0x50 #define DEV_PCS1G_CFG_PCS1G_ANEG 0x54 #define DEV_PCS1G_CFG_PCS1G_ANEG_ADV_ABILITY(x) ((x) << 16) #define LRN_COMMON_ACCESS_CTRL 0x0 #define LRN_COMMON_ACCESS_CTRL_MAC_TABLE_ACCESS_SHOT BIT(0) #define LRN_COMMON_MAC_ACCESS_CFG0 0x4 #define LRN_COMMON_MAC_ACCESS_CFG1 0x8 #define LRN_COMMON_MAC_ACCESS_CFG2 0xc #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_ADDR(x) (x) #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_TYPE(x) ((x) << 12) #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_VLD BIT(15) #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_LOCKED BIT(16) #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_CPU_COPY BIT(23) #define LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_CPU_QU(x) ((x) << 24) #define QFWD_SYSTEM_SWITCH_PORT_MODE(x) (0x4400 + 0x4 * (x)) #define QFWD_SYSTEM_SWITCH_PORT_MODE_PORT_ENA BIT(17) #define QS_XTR_GRP_CFG(x) (4 * (x)) #define QS_INJ_GRP_CFG(x) (0x24 + (x) * 4) #define QSYS_SYSTEM_RESET_CFG 0x1048 #define QSYS_CALCFG_CAL_AUTO 0x1134 #define QSYS_CALCFG_CAL_CTRL 0x113c #define QSYS_CALCFG_CAL_CTRL_CAL_MODE(x) ((x) << 11) #define QSYS_RAM_CTRL_RAM_INIT 0x1140 #define REW_RAM_CTRL_RAM_INIT 0xFFF4 #define MAC_VID 0 #define CPU_PORT 11 #define IFH_LEN 7 #define ETH_ALEN 6 #define PGID_BROADCAST 50 #define PGID_UNICAST 51 static const char * const regs_names[] = { "port0", "port1", "ana_ac", "ana_cl", "ana_l2", "asm", "lrn", "qfwd", "qs", "qsys", "rew", }; #define REGS_NAMES_COUNT ARRAY_SIZE(regs_names) + 1 #define MAX_PORT 2 enum servalt_ctrl_regs { ANA_AC = MAX_PORT, ANA_CL, ANA_L2, ASM, LRN, QFWD, QS, QSYS, REW, }; #define SERVALT_MIIM_BUS_COUNT 2 struct servalt_phy_port_t { size_t phy_addr; struct mii_dev *bus; }; struct servalt_private { void __iomem *regs[REGS_NAMES_COUNT]; struct mii_dev *bus[SERVALT_MIIM_BUS_COUNT]; struct servalt_phy_port_t ports[MAX_PORT]; }; static const unsigned long servalt_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 struct mscc_miim_dev miim[SERVALT_MIIM_BUS_COUNT]; static int miim_count = -1; static void mscc_phy_reset(void) { writel(0, BASE_DEVCPU_GCB + GCB_PHY_CFG + PHY_CFG); writel(PHY_CFG_RST | PHY_CFG_COMMON_RST | PHY_CFG_ENA, BASE_DEVCPU_GCB + GCB_PHY_CFG + PHY_CFG); if (wait_for_bit_le32((const void *)(BASE_DEVCPU_GCB + GCB_PHY_CFG) + PHY_STAT, PHY_STAT_SUPERVISOR_COMPLETE, true, 2000, false)) { pr_err("Timeout in phy reset\n"); } } static void servalt_cpu_capture_setup(struct servalt_private *priv) { /* ASM: No preamble and IFH prefix on CPU injected frames */ writel(ASM_CFG_PORT_NO_PREAMBLE_ENA | ASM_CFG_PORT_INJ_FORMAT_CFG(1), priv->regs[ASM] + ASM_CFG_PORT(CPU_PORT)); /* Set Manual injection via DEVCPU_QS registers for CPU queue 0 */ writel(0x5, priv->regs[QS] + QS_INJ_GRP_CFG(0)); /* Set Manual extraction via DEVCPU_QS registers for CPU queue 0 */ writel(0x7, priv->regs[QS] + QS_XTR_GRP_CFG(0)); /* Enable CPU port for any frame transfer */ setbits_le32(priv->regs[QFWD] + QFWD_SYSTEM_SWITCH_PORT_MODE(CPU_PORT), QFWD_SYSTEM_SWITCH_PORT_MODE_PORT_ENA); /* Send a copy to CPU when found as forwarding entry */ setbits_le32(priv->regs[ANA_L2] + ANA_L2_COMMON_FWD_CFG, ANA_L2_COMMON_FWD_CFG_CPU_DMAC_COPY_ENA); } static void servalt_port_init(struct servalt_private *priv, int port) { void __iomem *regs = priv->regs[port]; /* Enable PCS */ writel(DEV_PCS1G_CFG_PCS1G_CFG_PCS_ENA, regs + DEV_PCS1G_CFG_PCS1G_CFG); /* Disable Signal Detect */ writel(0, regs + DEV_PCS1G_CFG_PCS1G_SD); /* Enable MAC RX and TX */ writel(DEV_MAC_CFG_MAC_ENA_RX_ENA | DEV_MAC_CFG_MAC_ENA_TX_ENA, regs + DEV_MAC_CFG_MAC_ENA); /* Clear sgmii_mode_ena */ writel(0, regs + DEV_PCS1G_CFG_PCS1G_MODE); /* * Clear sw_resolve_ena(bit 0) and set adv_ability to * something meaningful just in case */ writel(DEV_PCS1G_CFG_PCS1G_ANEG_ADV_ABILITY(0x20), regs + DEV_PCS1G_CFG_PCS1G_ANEG); /* Set MAC IFG Gaps */ writel(DEV_MAC_CFG_MAC_IFG_TX_IFG(4) | DEV_MAC_CFG_MAC_IFG_RX_IFG1(5) | DEV_MAC_CFG_MAC_IFG_RX_IFG2(1), regs + DEV_MAC_CFG_MAC_IFG); /* Set link speed and release all resets */ writel(DEV_DEV_CFG_DEV_RST_CTRL_SPEED_SEL(2), regs + DEV_DEV_CFG_DEV_RST_CTRL); /* Make VLAN aware for CPU traffic */ writel(ANA_CL_PORT_VLAN_CFG_AWARE_ENA | ANA_CL_PORT_VLAN_CFG_POP_CNT(1) | MAC_VID, priv->regs[ANA_CL] + ANA_CL_PORT_VLAN_CFG(port)); /* Enable CPU port for any frame transfer */ setbits_le32(priv->regs[QFWD] + QFWD_SYSTEM_SWITCH_PORT_MODE(port), QFWD_SYSTEM_SWITCH_PORT_MODE_PORT_ENA); } static int ram_init(u32 val, void __iomem *addr) { writel(val, addr); if (wait_for_bit_le32(addr, BIT(1), false, 2000, false)) { printf("Timeout in memory reset, reg = 0x%08x\n", val); return 1; } return 0; } static int servalt_switch_init(struct servalt_private *priv) { /* Initialize memories */ ram_init(0x3, priv->regs[QSYS] + QSYS_RAM_CTRL_RAM_INIT); ram_init(0x3, priv->regs[ASM] + ASM_RAM_CTRL_RAM_INIT); ram_init(0x3, priv->regs[ANA_AC] + ANA_AC_RAM_CTRL_RAM_INIT); ram_init(0x3, priv->regs[REW] + REW_RAM_CTRL_RAM_INIT); /* Reset counters */ writel(0x1, priv->regs[ANA_AC] + ANA_AC_STAT_GLOBAL_CFG_PORT_RESET); writel(0x1, priv->regs[ASM] + ASM_CFG_STAT_CFG); /* Enable switch-core and queue system */ writel(0x1, priv->regs[QSYS] + QSYS_SYSTEM_RESET_CFG); return 0; } static void servalt_switch_config(struct servalt_private *priv) { writel(0x55555555, priv->regs[QSYS] + QSYS_CALCFG_CAL_AUTO); writel(readl(priv->regs[QSYS] + QSYS_CALCFG_CAL_CTRL) | QSYS_CALCFG_CAL_CTRL_CAL_MODE(8), priv->regs[QSYS] + QSYS_CALCFG_CAL_CTRL); } static int servalt_initialize(struct servalt_private *priv) { int ret, i; /* Initialize switch memories, enable core */ ret = servalt_switch_init(priv); if (ret) return ret; servalt_switch_config(priv); for (i = 0; i < MAX_PORT; i++) servalt_port_init(priv, i); servalt_cpu_capture_setup(priv); return 0; } static inline int servalt_vlant_wait_for_completion(struct servalt_private *priv) { if (wait_for_bit_le32(priv->regs[LRN] + LRN_COMMON_ACCESS_CTRL, LRN_COMMON_ACCESS_CTRL_MAC_TABLE_ACCESS_SHOT, false, 2000, false)) return -ETIMEDOUT; return 0; } static int servalt_mac_table_add(struct servalt_private *priv, const unsigned char mac[ETH_ALEN], int pgid) { u32 macl = 0, mach = 0; /* * Set the MAC address to handle and the vlan associated in a format * understood by the hardware. */ mach |= MAC_VID << 16; mach |= ((u32)mac[0]) << 8; mach |= ((u32)mac[1]) << 0; macl |= ((u32)mac[2]) << 24; macl |= ((u32)mac[3]) << 16; macl |= ((u32)mac[4]) << 8; macl |= ((u32)mac[5]) << 0; writel(mach, priv->regs[LRN] + LRN_COMMON_MAC_ACCESS_CFG0); writel(macl, priv->regs[LRN] + LRN_COMMON_MAC_ACCESS_CFG1); writel(LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_ADDR(pgid) | LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_TYPE(0x3) | LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_CPU_COPY | LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_CPU_QU(0) | LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_VLD | LRN_COMMON_MAC_ACCESS_CFG2_MAC_ENTRY_LOCKED, priv->regs[LRN] + LRN_COMMON_MAC_ACCESS_CFG2); writel(LRN_COMMON_ACCESS_CTRL_MAC_TABLE_ACCESS_SHOT, priv->regs[LRN] + LRN_COMMON_ACCESS_CTRL); return servalt_vlant_wait_for_completion(priv); } static int servalt_write_hwaddr(struct udevice *dev) { struct servalt_private *priv = dev_get_priv(dev); struct eth_pdata *pdata = dev_get_plat(dev); return servalt_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST); } static int servalt_start(struct udevice *dev) { struct servalt_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 = servalt_initialize(priv); if (ret) return ret; /* Set MAC address tables entries for CPU redirection */ ret = servalt_mac_table_add(priv, mac, PGID_BROADCAST); if (ret) return ret; ret = servalt_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST); if (ret) return ret; return 0; } static void servalt_stop(struct udevice *dev) { } static int servalt_send(struct udevice *dev, void *packet, int length) { struct servalt_private *priv = dev_get_priv(dev); u32 ifh[IFH_LEN]; u32 *buf = packet; memset(ifh, '\0', IFH_LEN * 4); /* Set DST PORT_MASK */ ifh[0] = htonl(0); ifh[1] = htonl(0x1FFFFF); ifh[2] = htonl(~0); /* Set DST_MODE to INJECT and UPDATE_FCS */ ifh[5] = htonl(0x4c0); return mscc_send(priv->regs[QS], servalt_regs_qs, ifh, IFH_LEN, buf, length); } static int servalt_recv(struct udevice *dev, int flags, uchar **packetp) { struct servalt_private *priv = dev_get_priv(dev); u32 *rxbuf = (u32 *)net_rx_packets[0]; int byte_cnt = 0; byte_cnt = mscc_recv(priv->regs[QS], servalt_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 < SERVALT_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 servalt_private *priv, size_t index, size_t phy_addr, struct mii_dev *bus) { priv->ports[index].phy_addr = phy_addr; priv->ports[index].bus = bus; } static int servalt_probe(struct udevice *dev) { struct servalt_private *priv = dev_get_priv(dev); int i; 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; 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(struct mscc_miim_dev) * SERVALT_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; ofnode_parse_phandle_with_args(node, "phy-handle", NULL, 0, 0, &phandle); /* 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); add_port_entry(priv, i, phy_addr, bus); } mscc_phy_reset(); for (i = 0; i < MAX_PORT; i++) { if (!priv->ports[i].bus) continue; phy_connect(priv->ports[i].bus, priv->ports[i].phy_addr, dev, PHY_INTERFACE_MODE_NA); } return 0; } static int servalt_remove(struct udevice *dev) { struct servalt_private *priv = dev_get_priv(dev); int i; for (i = 0; i < SERVALT_MIIM_BUS_COUNT; i++) { mdio_unregister(priv->bus[i]); mdio_free(priv->bus[i]); } return 0; } static const struct eth_ops servalt_ops = { .start = servalt_start, .stop = servalt_stop, .send = servalt_send, .recv = servalt_recv, .write_hwaddr = servalt_write_hwaddr, }; static const struct udevice_id mscc_servalt_ids[] = { {.compatible = "mscc,vsc7437-switch" }, { /* Sentinel */ } }; U_BOOT_DRIVER(servalt) = { .name = "servalt-switch", .id = UCLASS_ETH, .of_match = mscc_servalt_ids, .probe = servalt_probe, .remove = servalt_remove, .ops = &servalt_ops, .priv_auto = sizeof(struct servalt_private), .plat_auto = sizeof(struct eth_pdata), };