[U-Boot] [PATCH 1/4] net: Add MSCC Serval network driver.
Horatiu Vultur
horatiu.vultur at microchip.com
Thu Apr 11 12:11:32 UTC 2019
Add network driver for Microsemi Ethernet switch.
It is present on Serval SoCs.
Signed-off-by: Horatiu Vultur <horatiu.vultur at 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),
+};
--
2.7.4
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