]> git.dujemihanovic.xyz Git - u-boot.git/commitdiff
net: add MSCC Ocelot switch support
authorGregory CLEMENT <gregory.clement@bootlin.com>
Thu, 17 Jan 2019 16:07:13 +0000 (17:07 +0100)
committerDaniel Schwierzeck <daniel.schwierzeck@gmail.com>
Wed, 23 Jan 2019 17:26:44 +0000 (18:26 +0100)
This patch adds support for the Microsemi Ethernet switch present on
Ocelot SoCs.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
MAINTAINERS
drivers/net/Kconfig
drivers/net/Makefile
drivers/net/ocelot_switch.c [new file with mode: 0644]

index 38a1bc68f590cc5c96ef55b09c9e89e4de0f3dc6..1cb092e539fa888b8c5ae747242455a516e26e22 100644 (file)
@@ -539,6 +539,7 @@ F:  drivers/gpio/mscc_sgpio.c
 F:     drivers/spi/mscc_bb_spi.c
 F:     include/configs/vcoreiii.h
 F:     drivers/pinctrl/mscc/
+F:     drivers/net/ocelot_switch.c
 
 MIPS JZ4780
 M:     Ezequiel Garcia <ezequiel@collabora.com>
index ff55e03d3fd22ba98d5ffcd6ec185b1bada60c22..39ce4e8a1fc6151fb9934045a41b8184bc5bae01 100644 (file)
@@ -432,6 +432,13 @@ config SNI_AVE
          This driver implements support for the Socionext AVE Ethernet
          controller, as found on the Socionext UniPhier family.
 
+config MSCC_OCELOT_SWITCH
+       bool "Ocelot switch driver"
+       depends on DM_ETH && ARCH_MSCC
+       select PHYLIB
+       help
+         This driver supports the Ocelot network switch device.
+
 config ETHER_ON_FEC1
        bool "FEC1"
        depends on MPC8XX_FEC
index ee7f3e71a8dda6f99bca20c2834156dfa327aeb2..e38c16464478af4280bcda630f51d6903ec9cac6 100644 (file)
@@ -75,3 +75,4 @@ obj-$(CONFIG_FSL_PFE) += pfe_eth/
 obj-$(CONFIG_SNI_AVE) += sni_ave.o
 obj-y += ti/
 obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth.o
+obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o
diff --git a/drivers/net/ocelot_switch.c b/drivers/net/ocelot_switch.c
new file mode 100644 (file)
index 0000000..9fed26c
--- /dev/null
@@ -0,0 +1,765 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2018 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>
+
+#define MIIM_STATUS                    0x0
+#define                MIIM_STAT_BUSY                  BIT(3)
+#define MIIM_CMD                       0x8
+#define                MIIM_CMD_SCAN           BIT(0)
+#define                MIIM_CMD_OPR_WRITE      BIT(1)
+#define                MIIM_CMD_OPR_READ       BIT(2)
+#define                MIIM_CMD_SINGLE_SCAN    BIT(3)
+#define                MIIM_CMD_WRDATA(x)      ((x) << 4)
+#define                MIIM_CMD_REGAD(x)       ((x) << 20)
+#define                MIIM_CMD_PHYAD(x)       ((x) << 25)
+#define                MIIM_CMD_VLD            BIT(31)
+#define MIIM_DATA                      0xC
+#define                MIIM_DATA_ERROR         (0x2 << 16)
+
+#define PHY_CFG                                0x0
+#define PHY_CFG_ENA                            0xF
+#define PHY_CFG_COMMON_RST                     BIT(4)
+#define PHY_CFG_RST                            (0xF << 5)
+#define PHY_STAT                       0x4
+#define PHY_STAT_SUPERVISOR_COMPLETE           BIT(0)
+
+#define ANA_PORT_VLAN_CFG(x)           (0x7000 + 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)           (0x7070 + 0x100 * (x))
+#define                ANA_PORT_PORT_CFG_RECV_ENA      BIT(6)
+#define        ANA_TABLES_MACHDATA             0x8b34
+#define        ANA_TABLES_MACLDATA             0x8b38
+#define ANA_TABLES_MACACCESS           0x8b3c
+#define                ANA_TABLES_MACACCESS_VALID      BIT(11)
+#define                ANA_TABLES_MACACCESS_ENTRYTYPE(x)   ((x) << 9)
+#define                ANA_TABLES_MACACCESS_DEST_IDX(x)    ((x) << 3)
+#define                ANA_TABLES_MACACCESS_MAC_TABLE_CMD(x)   (x)
+#define                ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M    GENMASK(2, 0)
+#define                MACACCESS_CMD_IDLE                     0
+#define                MACACCESS_CMD_LEARN                    1
+#define                MACACCESS_CMD_GET_NEXT                 4
+#define ANA_PGID(x)                    (0x8c00 + 4 * (x))
+
+#define SYS_FRM_AGING                  0x574
+#define                SYS_FRM_AGING_ENA               BIT(20)
+
+#define SYS_SYSTEM_RST_CFG             0x508
+#define                SYS_SYSTEM_RST_MEM_INIT         BIT(0)
+#define                SYS_SYSTEM_RST_MEM_ENA          BIT(1)
+#define                SYS_SYSTEM_RST_CORE_ENA         BIT(2)
+#define SYS_PORT_MODE(x)               (0x514 + 0x4 * (x))
+#define                SYS_PORT_MODE_INCL_INJ_HDR(x)   ((x) << 3)
+#define                SYS_PORT_MODE_INCL_INJ_HDR_M    GENMASK(4, 3)
+#define                SYS_PORT_MODE_INCL_XTR_HDR(x)   ((x) << 1)
+#define                SYS_PORT_MODE_INCL_XTR_HDR_M    GENMASK(2, 1)
+#define        SYS_PAUSE_CFG(x)                (0x608 + 0x4 * (x))
+#define                SYS_PAUSE_CFG_PAUSE_ENA         BIT(0)
+
+#define QSYS_SWITCH_PORT_MODE(x)       (0x11234 + 0x4 * (x))
+#define                QSYS_SWITCH_PORT_MODE_PORT_ENA  BIT(14)
+#define        QSYS_QMAP                       0x112d8
+#define        QSYS_EGR_NO_SHARING             0x1129c
+
+/* Port registers */
+#define DEV_CLOCK_CFG                  0x0
+#define DEV_CLOCK_CFG_LINK_SPEED_1000          1
+#define DEV_MAC_ENA_CFG                        0x1c
+#define                DEV_MAC_ENA_CFG_RX_ENA          BIT(4)
+#define                DEV_MAC_ENA_CFG_TX_ENA          BIT(0)
+
+#define DEV_MAC_IFG_CFG                        0x30
+#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                      0x48
+#define                PCS1G_MODE_CFG_SGMII_MODE_ENA   BIT(0)
+#define PCS1G_MODE_CFG                 0x4c
+#define                PCS1G_MODE_CFG_UNIDIR_MODE_ENA  BIT(4)
+#define                PCS1G_MODE_CFG_SGMII_MODE_ENA   BIT(0)
+#define PCS1G_SD_CFG                   0x50
+#define PCS1G_ANEG_CFG                 0x54
+#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_STATUS_WORD_POS  BIT(1)
+#define                QS_XTR_GRP_CFG_BYTE_SWAP        BIT(0)
+#define QS_XTR_RD(x)                   (0x8 + 4 * (x))
+#define QS_XTR_FLUSH                   0x18
+#define                QS_XTR_FLUSH_FLUSH              GENMASK(1, 0)
+#define QS_XTR_DATA_PRESENT            0x1c
+#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 QS_INJ_WR(x)                   (0x2c + 4 * (x))
+#define QS_INJ_CTRL(x)                 (0x34 + 4 * (x))
+#define                QS_INJ_CTRL_GAP_SIZE(x)         ((x) << 21)
+#define                QS_INJ_CTRL_EOF                 BIT(19)
+#define                QS_INJ_CTRL_SOF                 BIT(18)
+#define                QS_INJ_CTRL_VLD_BYTES(x)        ((x) << 16)
+
+#define XTR_EOF_0     ntohl(0x80000000u)
+#define XTR_EOF_1     ntohl(0x80000001u)
+#define XTR_EOF_2     ntohl(0x80000002u)
+#define XTR_EOF_3     ntohl(0x80000003u)
+#define XTR_PRUNED    ntohl(0x80000004u)
+#define XTR_ABORT     ntohl(0x80000005u)
+#define XTR_ESCAPE    ntohl(0x80000006u)
+#define XTR_NOT_READY ntohl(0x80000007u)
+
+#define IFH_INJ_BYPASS         BIT(31)
+#define        IFH_TAG_TYPE_C          0
+#define XTR_VALID_BYTES(x)     (4 - ((x) & 3))
+#define        MAC_VID                 1
+#define CPU_PORT               11
+#define INTERNAL_PORT_MSK      0xF
+#define IFH_LEN                        4
+#define OCELOT_BUF_CELL_SZ     60
+#define ETH_ALEN               6
+#define        PGID_BROADCAST          13
+#define        PGID_UNICAST            14
+#define        PGID_SRC                80
+
+enum ocelot_target {
+       ANA,
+       QS,
+       QSYS,
+       REW,
+       SYS,
+       HSIO,
+       PORT0,
+       PORT1,
+       PORT2,
+       PORT3,
+       TARGET_MAX,
+};
+
+#define MAX_PORT (PORT3 - PORT0)
+
+/* MAC table entry types.
+ * ENTRYTYPE_NORMAL is subject to aging.
+ * ENTRYTYPE_LOCKED is not subject to aging.
+ * ENTRYTYPE_MACv4 is not subject to aging. For IPv4 multicast.
+ * ENTRYTYPE_MACv6 is not subject to aging. For IPv6 multicast.
+ */
+enum macaccess_entry_type {
+       ENTRYTYPE_NORMAL = 0,
+       ENTRYTYPE_LOCKED,
+       ENTRYTYPE_MACv4,
+       ENTRYTYPE_MACv6,
+};
+
+enum ocelot_mdio_target {
+       MIIM,
+       PHY,
+       TARGET_MDIO_MAX,
+};
+
+enum ocelot_phy_id {
+       INTERNAL,
+       EXTERNAL,
+       NUM_PHY,
+};
+
+struct ocelot_private {
+       void __iomem *regs[TARGET_MAX];
+
+       struct mii_dev *bus[NUM_PHY];
+       struct phy_device *phydev;
+       int phy_mode;
+       int max_speed;
+
+       int rx_pos;
+       int rx_siz;
+       int rx_off;
+       int tx_num;
+
+       u8 tx_adj_packetbuf[PKTSIZE_ALIGN + PKTALIGN];
+       void *tx_adj_buf;
+};
+
+struct mscc_miim_dev {
+       void __iomem *regs;
+       void __iomem *phy_regs;
+};
+
+struct mscc_miim_dev miim[NUM_PHY];
+
+static int mscc_miim_wait_ready(struct mscc_miim_dev *miim)
+{
+       return wait_for_bit_le32(miim->regs + MIIM_STATUS, MIIM_STAT_BUSY,
+                                false, 250, false);
+}
+
+static int mscc_miim_reset(struct mii_dev *bus)
+{
+       struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
+
+       if (miim->phy_regs) {
+               writel(0, miim->phy_regs + PHY_CFG);
+               writel(PHY_CFG_RST | PHY_CFG_COMMON_RST
+                      | PHY_CFG_ENA, miim->phy_regs + PHY_CFG);
+               mdelay(500);
+       }
+
+       return 0;
+}
+
+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(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
+              MIIM_CMD_REGAD(reg) | MIIM_CMD_OPR_READ,
+              miim->regs + MIIM_CMD);
+
+       ret = mscc_miim_wait_ready(miim);
+       if (ret)
+               goto out;
+
+       val = readl(miim->regs + MIIM_DATA);
+       if (val & 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(MIIM_CMD_VLD | MIIM_CMD_PHYAD(addr) |
+              MIIM_CMD_REGAD(reg) | MIIM_CMD_WRDATA(val) |
+              MIIM_CMD_OPR_WRITE, miim->regs + MIIM_CMD);
+ out:
+       return ret;
+}
+
+/* For now only setup the internal mdio bus */
+static struct mii_dev *ocelot_mdiobus_init(struct udevice *dev)
+{
+       unsigned long phy_size[TARGET_MAX];
+       phys_addr_t phy_base[TARGET_MAX];
+       struct ofnode_phandle_args phandle;
+       ofnode eth_node, node, mdio_node;
+       struct resource res;
+       struct mii_dev *bus;
+       fdt32_t faddr;
+       int i;
+
+       bus = mdio_alloc();
+
+       if (!bus)
+               return NULL;
+
+       /* gathered only the first mdio bus */
+       eth_node = dev_read_first_subnode(dev);
+       node = ofnode_first_subnode(eth_node);
+       ofnode_parse_phandle_with_args(node, "phy-handle", NULL, 0, 0,
+                                      &phandle);
+       mdio_node = ofnode_get_parent(phandle.node);
+
+       for (i = 0; i < TARGET_MDIO_MAX; i++) {
+               if (ofnode_read_resource(mdio_node, i, &res)) {
+                       pr_err("%s: get OF resource failed\n", __func__);
+                       return NULL;
+               }
+               faddr = cpu_to_fdt32(res.start);
+               phy_base[i] = ofnode_translate_address(mdio_node, &faddr);
+               phy_size[i] = res.end - res.start;
+       }
+
+       strcpy(bus->name, "miim-internal");
+       miim[INTERNAL].phy_regs = ioremap(phy_base[PHY], phy_size[PHY]);
+       miim[INTERNAL].regs = ioremap(phy_base[MIIM], phy_size[MIIM]);
+       bus->priv = &miim[INTERNAL];
+       bus->reset = mscc_miim_reset;
+       bus->read = mscc_miim_read;
+       bus->write = mscc_miim_write;
+
+       if (mdio_register(bus))
+               return NULL;
+       else
+               return bus;
+}
+
+__weak void mscc_switch_reset(void)
+{
+}
+
+static void ocelot_stop(struct udevice *dev)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       int i;
+
+       mscc_switch_reset();
+       for (i = 0; i < NUM_PHY; i++)
+               if (priv->bus[i])
+                       mscc_miim_reset(priv->bus[i]);
+}
+
+static void ocelot_cpu_capture_setup(struct ocelot_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 ocelot_port_init(struct ocelot_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 - PORT0));
+
+       /* Enable the port in the core */
+       setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(port - PORT0),
+                    QSYS_SWITCH_PORT_MODE_PORT_ENA);
+}
+
+static int ocelot_switch_init(struct ocelot_private *priv)
+{
+       /* Reset switch & memories */
+       writel(SYS_SYSTEM_RST_MEM_ENA | SYS_SYSTEM_RST_MEM_INIT,
+              priv->regs[SYS] + SYS_SYSTEM_RST_CFG);
+
+       /* Wait to complete */
+       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);
+
+       return 0;
+}
+
+static void ocelot_switch_flush(struct ocelot_private *priv)
+{
+       /* All Queues flush */
+       setbits_le32(priv->regs[QS] + QS_XTR_FLUSH, QS_XTR_FLUSH_FLUSH);
+       /* Allow to drain */
+       mdelay(1);
+       /* All Queues normal */
+       clrbits_le32(priv->regs[QS] + QS_XTR_FLUSH, QS_XTR_FLUSH_FLUSH);
+}
+
+static int ocelot_initialize(struct ocelot_private *priv)
+{
+       int ret, i;
+
+       /* Initialize switch memories, enable core */
+       ret = ocelot_switch_init(priv);
+       if (ret)
+               return ret;
+       /*
+        * Disable port-to-port by switching
+        * Put fron ports in "port isolation modes" - i.e. they cant send
+        * to other ports - via the PGID sorce masks.
+        */
+       for (i = 0; i <= MAX_PORT; i++)
+               writel(0, priv->regs[ANA] + ANA_PGID(PGID_SRC + i));
+
+       /* Flush queues */
+       ocelot_switch_flush(priv);
+
+       /* Setup frame ageing - "2 sec" - The unit is 6.5us on Ocelot */
+       writel(SYS_FRM_AGING_ENA | (20000000 / 65),
+              priv->regs[SYS] + SYS_FRM_AGING);
+
+       for (i = PORT0; i <= PORT3; i++)
+               ocelot_port_init(priv, i);
+
+       ocelot_cpu_capture_setup(priv);
+
+       debug("Ports enabled\n");
+
+       return 0;
+}
+
+static inline int ocelot_vlant_wait_for_completion(struct ocelot_private *priv)
+{
+       unsigned int val, timeout = 10;
+
+       /* Wait for the issued mac table command to be completed, or timeout.
+        * When the command read from ANA_TABLES_MACACCESS is
+        * MACACCESS_CMD_IDLE, the issued command completed successfully.
+        */
+       do {
+               val = readl(priv->regs[ANA] + ANA_TABLES_MACACCESS);
+               val &= ANA_TABLES_MACACCESS_MAC_TABLE_CMD_M;
+       } while (val != MACACCESS_CMD_IDLE && timeout--);
+
+       if (!timeout)
+               return -ETIMEDOUT;
+
+       return 0;
+}
+
+static int ocelot_mac_table_add(struct ocelot_private *priv,
+                               const unsigned char mac[ETH_ALEN], int pgid)
+{
+       u32 macl = 0, mach = 0;
+       int ret;
+
+       /* 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(macl, priv->regs[ANA] + ANA_TABLES_MACLDATA);
+       writel(mach, priv->regs[ANA] + ANA_TABLES_MACHDATA);
+
+       writel(ANA_TABLES_MACACCESS_VALID |
+              ANA_TABLES_MACACCESS_DEST_IDX(pgid) |
+              ANA_TABLES_MACACCESS_ENTRYTYPE(ENTRYTYPE_LOCKED) |
+              ANA_TABLES_MACACCESS_MAC_TABLE_CMD(MACACCESS_CMD_LEARN),
+              priv->regs[ANA] + ANA_TABLES_MACACCESS);
+
+       ret = ocelot_vlant_wait_for_completion(priv);
+
+       return ret;
+}
+
+static int ocelot_write_hwaddr(struct udevice *dev)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       struct eth_pdata *pdata = dev_get_platdata(dev);
+
+       ocelot_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST);
+
+       writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
+
+       return 0;
+}
+
+static int ocelot_start(struct udevice *dev)
+{
+       struct ocelot_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 = ocelot_initialize(priv);
+       if (ret)
+               return ret;
+
+       /* Set MAC address tables entries for CPU redirection */
+       ocelot_mac_table_add(priv, mac, PGID_BROADCAST);
+
+       writel(BIT(CPU_PORT) | INTERNAL_PORT_MSK,
+              priv->regs[ANA] + ANA_PGID(PGID_BROADCAST));
+
+       /* It should be setup latter in ocelot_write_hwaddr */
+       ocelot_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST);
+
+       writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
+
+       return 0;
+}
+
+static int ocelot_send(struct udevice *dev, void *packet, int length)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       u32 ifh[IFH_LEN];
+       int port = BIT(0);      /* use port 0 */
+       u8 grp = 0;             /* Send everything on CPU group 0 */
+       int i, count = (length + 3) / 4, last = length % 4;
+       u32 *buf = packet;
+
+       writel(QS_INJ_CTRL_GAP_SIZE(1) | QS_INJ_CTRL_SOF,
+              priv->regs[QS] + QS_INJ_CTRL(grp));
+
+       /*
+        * Generate the IFH for frame injection
+        *
+        * The IFH is a 128bit-value
+        * bit 127: bypass the analyzer processing
+        * bit 56-67: 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] = (0xf00 & port) >> 8;
+       ifh[2] = (0xff & port) << 24;
+       ifh[3] = (IFH_TAG_TYPE_C << 16);
+
+       for (i = 0; i < IFH_LEN; i++)
+               writel(ifh[i], priv->regs[QS] + QS_INJ_WR(grp));
+
+       for (i = 0; i < count; i++)
+               writel(buf[i], priv->regs[QS] + QS_INJ_WR(grp));
+
+       /* Add padding */
+       while (i < (OCELOT_BUF_CELL_SZ / 4)) {
+               writel(0, priv->regs[QS] + QS_INJ_WR(grp));
+               i++;
+       }
+
+       /* Indicate EOF and valid bytes in last word */
+       writel(QS_INJ_CTRL_GAP_SIZE(1) |
+              QS_INJ_CTRL_VLD_BYTES(length < OCELOT_BUF_CELL_SZ ? 0 : last) |
+              QS_INJ_CTRL_EOF, priv->regs[QS] + QS_INJ_CTRL(grp));
+
+       /* Add dummy CRC */
+       writel(0, priv->regs[QS] + QS_INJ_WR(grp));
+
+       return 0;
+}
+
+static int ocelot_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       u8 grp = 0;             /* Send everything on CPU group 0 */
+       u32 *rxbuf = (u32 *)net_rx_packets[0];
+       int i, byte_cnt = 0;
+       bool eof_flag = false, pruned_flag = false, abort_flag = false;
+
+       if (!(readl(priv->regs[QS] + QS_XTR_DATA_PRESENT) & BIT(grp)))
+               return -EAGAIN;
+
+       /* skip IFH */
+       for (i = 0; i < IFH_LEN; i++)
+               readl(priv->regs[QS] + QS_XTR_RD(grp));
+
+       while (!eof_flag) {
+               u32 val = readl(priv->regs[QS] + QS_XTR_RD(grp));
+
+               switch (val) {
+               case XTR_NOT_READY:
+                       debug("%d NOT_READY...?\n", byte_cnt);
+                       break;
+               case XTR_ABORT:
+                       /* really nedeed?? not done in linux */
+                       *rxbuf = readl(priv->regs[QS] + QS_XTR_RD(grp));
+                       abort_flag = true;
+                       eof_flag = true;
+                       debug("XTR_ABORT\n");
+                       break;
+               case XTR_EOF_0:
+               case XTR_EOF_1:
+               case XTR_EOF_2:
+               case XTR_EOF_3:
+                       byte_cnt += XTR_VALID_BYTES(val);
+                       *rxbuf = readl(priv->regs[QS] + QS_XTR_RD(grp));
+                       eof_flag = true;
+                       debug("EOF\n");
+                       break;
+               case XTR_PRUNED:
+                       /* But get the last 4 bytes as well */
+                       eof_flag = true;
+                       pruned_flag = true;
+                       debug("PRUNED\n");
+                       /* fallthrough */
+               case XTR_ESCAPE:
+                       *rxbuf = readl(priv->regs[QS] + QS_XTR_RD(grp));
+                       byte_cnt += 4;
+                       rxbuf++;
+                       debug("ESCAPED\n");
+                       break;
+               default:
+                       *rxbuf = val;
+                       byte_cnt += 4;
+                       rxbuf++;
+               }
+       }
+
+       if (abort_flag || pruned_flag || !eof_flag) {
+               debug("Discarded frame: abort:%d pruned:%d eof:%d\n",
+                     abort_flag, pruned_flag, eof_flag);
+               return -EAGAIN;
+       }
+
+       *packetp = net_rx_packets[0];
+
+       return byte_cnt;
+}
+
+static int ocelot_probe(struct udevice *dev)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       int ret, i;
+
+       struct {
+               enum ocelot_target id;
+               char *name;
+       } reg[] = {
+               { SYS, "sys" },
+               { REW, "rew" },
+               { QSYS, "qsys" },
+               { ANA, "ana" },
+               { QS, "qs" },
+               { HSIO, "hsio" },
+               { PORT0, "port0" },
+               { PORT1, "port1" },
+               { PORT2, "port2" },
+               { PORT3, "port3" },
+       };
+
+       for (i = 0; i < ARRAY_SIZE(reg); i++) {
+               priv->regs[reg[i].id] = dev_remap_addr_name(dev, reg[i].name);
+               if (!priv->regs[reg[i].id]) {
+                       pr_err
+                           ("Error %d: can't get regs base addresses for %s\n",
+                            ret, reg[i].name);
+                       return -ENOMEM;
+               }
+       }
+
+       priv->bus[INTERNAL] = ocelot_mdiobus_init(dev);
+
+       for (i = 0; i < 4; i++) {
+               phy_connect(priv->bus[INTERNAL], i, dev,
+                           PHY_INTERFACE_MODE_NONE);
+       }
+
+       return 0;
+}
+
+static int ocelot_remove(struct udevice *dev)
+{
+       struct ocelot_private *priv = dev_get_priv(dev);
+       int i;
+
+       for (i = 0; i < NUM_PHY; i++) {
+               mdio_unregister(priv->bus[i]);
+               mdio_free(priv->bus[i]);
+       }
+
+       return 0;
+}
+
+static const struct eth_ops ocelot_ops = {
+       .start        = ocelot_start,
+       .stop         = ocelot_stop,
+       .send         = ocelot_send,
+       .recv         = ocelot_recv,
+       .write_hwaddr = ocelot_write_hwaddr,
+};
+
+static const struct udevice_id mscc_ocelot_ids[] = {
+       {.compatible = "mscc,vsc7514-switch"},
+       { /* Sentinel */ }
+};
+
+U_BOOT_DRIVER(ocelot) = {
+       .name     = "ocelot-switch",
+       .id       = UCLASS_ETH,
+       .of_match = mscc_ocelot_ids,
+       .probe    = ocelot_probe,
+       .remove   = ocelot_remove,
+       .ops      = &ocelot_ops,
+       .priv_auto_alloc_size = sizeof(struct ocelot_private),
+       .platdata_auto_alloc_size = sizeof(struct eth_pdata),
+};