[U-Boot] [PATCH 2/3] net: add MSCC Luton switch support

Gregory CLEMENT
2019-01-28T13:22:02Z

Hi Horatiu,

On lun., janv. 28 2019, Horatiu Vultur <horatiu.vultur@microchip.com> wrote:

> Add network driver for Microsemi Ethernet switch is present
> on Luton SoCs.
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
> MAINTAINERS | 1 +
> drivers/net/Kconfig | 7 +
> drivers/net/Makefile | 1 +
> drivers/net/luton_switch.c | 972 +++++++++++++++++++++++++++++++++++++++++++++

This file is pretty similar to drivers/net/ocelot_switch.c that means
that the support of luton should be merged in this driver as it was done
for the pinctrl.

Gregory

> 4 files changed, 981 insertions(+)
> create mode 100644 drivers/net/luton_switch.c
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 1cb092e..253274b 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -540,6 +540,7 @@ F: drivers/spi/mscc_bb_spi.c
> F: include/configs/vcoreiii.h
> F: drivers/pinctrl/mscc/
> F: drivers/net/ocelot_switch.c
> +F: drivers/net/luton_switch.c
>
> MIPS JZ4780
> M: Ezequiel Garcia <ezequiel@collabora.com>
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index 39ce4e8..d82037d 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -439,6 +439,13 @@ config MSCC_OCELOT_SWITCH
> help
> This driver supports the Ocelot network switch device.
>
> +config MSCC_LUTON_SWITCH
> + bool "Luton switch driver"
> + depends on DM_ETH && ARCH_MSCC
> + select PHYLIB
> + help
> + This driver supports the Luton network switch device.
> +
> config ETHER_ON_FEC1
> bool "FEC1"
> depends on MPC8XX_FEC
> diff --git a/drivers/net/Makefile b/drivers/net/Makefile
> index e38c164..470660d 100644
> --- a/drivers/net/Makefile
> +++ b/drivers/net/Makefile
> @@ -76,3 +76,4 @@ obj-$(CONFIG_SNI_AVE) += sni_ave.o
> obj-y += ti/
> obj-$(CONFIG_MEDIATEK_ETH) += mtk_eth.o
> obj-$(CONFIG_MSCC_OCELOT_SWITCH) += ocelot_switch.o
> +obj-$(CONFIG_MSCC_LUTON_SWITCH) += luton_switch.o
> diff --git a/drivers/net/luton_switch.c b/drivers/net/luton_switch.c
> new file mode 100644
> index 0000000..816b5fe
> --- /dev/null
> +++ b/drivers/net/luton_switch.c
> @@ -0,0 +1,972 @@
> +// 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>
> +
> +#define MIIM_STATUS 0x0
> +#define MIIM_STATUS_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 (0x3 << 16)
> +
> +#define ANA_PORT_VLAN_CFG(x) (0x00 + 0x80 * (x))
> +#define ANA_PORT_VLAN_CFG_AWARE_ENA BIT(20)
> +#define ANA_PORT_VLAN_CFG_POP_CNT(x) ((x) << 18)
> +#define ANA_PORT_CPU_FWD_CFG(x) (0x50 + 0x80 * (x))
> +#define ANA_PORT_CPU_FWD_CFG_SRC_COPY_ENA BIT(1)
> +#define ANA_PORT_PORT_CFG(x) (0x60 + 0x80 * (x))
> +#define ANA_PORT_PORT_CFG_RECV_ENA BIT(5)
> +#define ANA_TABLES_MACHDATA 0x11b0
> +#define ANA_TABLES_MACLDATA 0x11b4
> +#define ANA_TABLES_MACACCESS 0x11b8
> +#define ANA_TABLES_MACACCESS_MAC_CPU_COPY BIT(15)
> +#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 ANA_PGID(x) (0x1000 + 4 * (x))
> +
> +#define SYS_FRM_AGING 0x8300
> +
> +#define SYS_SYSTEM_RST_CFG 0x81b0
> +#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) (0x81bc + 0x4 * (x))
> +#define SYS_PORT_MODE_INCL_INJ_HDR BIT(0)
> +#define SYS_SWITCH_PORT_MODE(x) (0x8294 + 0x4 * (x))
> +#define SYS_SWITCH_PORT_MODE_PORT_ENA BIT(3)
> +#define SYS_EGR_NO_SHARING 0x8378
> +#define SYS_SCH_CPU 0x85a0
> +
> +#define REW_PORT_CFG(x) (0x8 + 0x80 * (x))
> +#define REW_PORT_CFG_IFH_INSERT_ENA BIT(7)
> +
> +#define GCB_DEVCPU_RST_SOFT_CHIP_RST 0x90
> +#define GCB_DEVCPU_RST_SOFT_CHIP_RST_SOFT_PHY BIT(1)
> +#define GCB_MISC_STAT 0x11c
> +#define GCB_MISC_STAT_PHY_READY BIT(3)
> +
> +#define QS_XTR_MAP(x) (0x10 + 4 * (x))
> +#define QS_XTR_MAP_GRP BIT(4)
> +#define QS_XTR_MAP_ENA BIT(0)
> +#define QS_XTR_RD(x) (0x18 + 4 * (x))
> +#define QS_XTR_FLUSH 0x28
> +#define QS_XTR_FLUSH_FLUSH BIT(0)
> +#define QS_XTR_DATA_PRESENT 0x2c
> +#define QS_INJ_WR(x) (0x3c + 4 * (x))
> +#define QS_INJ_CTRL(x) (0x44 + 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 HSIO_PLL5G_CFG_PLL5G_CFG2 0x8
> +
> +#define HSIO_RCOMP_CFG_CFG0 0x20
> +#define HSIO_RCOMP_CFG_CFG0_MODE_SEL(x) ((x) << 8)
> +#define HSIO_RCOMP_CFG_CFG0_RUN_CAL BIT(12)
> +#define HSIO_RCOMP_STATUS 0x24
> +#define HSIO_RCOMP_STATUS_BUSY BIT(12)
> +#define HSIO_RCOMP_STATUS_RCOMP_M GENMASK(3, 0)
> +#define HSIO_SERDES6G_ANA_CFG_DES_CFG 0x64
> +#define HSIO_SERDES6G_ANA_CFG_DES_CFG_BW_ANA(x) ((x) << 1)
> +#define HSIO_SERDES6G_ANA_CFG_DES_CFG_BW_HYST(x) ((x) << 5)
> +#define HSIO_SERDES6G_ANA_CFG_DES_CFG_MBTR_CTRL(x) ((x) << 10)
> +#define HSIO_SERDES6G_ANA_CFG_DES_CFG_PHS_CTRL(x) ((x) << 13)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG 0x68
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG_RESISTOR_CTRL(x) (x)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG_VBCOM(x) ((x) << 4)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG_VBAC(x) ((x) << 7)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG_RT(x) ((x) << 9)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG_RF(x) ((x) << 14)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1 0x6c
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_RST BIT(0)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_ENA_OFFSDC BIT(2)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_ENA_OFFSAC BIT(3)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_ANEG_MODE BIT(6)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_CHF BIT(7)
> +#define HSIO_SERDES6G_ANA_CFG_IB_CFG1_C(x) ((x) << 8)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG 0x70
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG_SR(x) ((x) << 4)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG_SR_H BIT(8)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG_POST0(x) ((x) << 23)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG_POL BIT(29)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG_ENA1V_MODE BIT(30)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG1 0x74
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG1_LEV(x) (x)
> +#define HSIO_SERDES6G_ANA_CFG_OB_CFG1_ENA_CAS(x) ((x) << 6)
> +#define HSIO_SERDES6G_ANA_CFG_COMMON_CFG 0x7c
> +#define HSIO_SERDES6G_ANA_CFG_COMMON_CFG_IF_MODE(x) (x)
> +#define HSIO_SERDES6G_ANA_CFG_COMMON_CFG_ENA_LANE BIT(18)
> +#define HSIO_SERDES6G_ANA_CFG_COMMON_CFG_SYS_RST BIT(31)
> +#define HSIO_SERDES6G_ANA_CFG_PLL_CFG 0x80
> +#define HSIO_SERDES6G_ANA_CFG_PLL_CFG_FSM_ENA BIT(7)
> +#define HSIO_SERDES6G_ANA_CFG_PLL_CFG_FSM_CTRL_DATA(x) ((x) << 8)
> +#define HSIO_SERDES6G_ANA_CFG_SER_CFG 0x84
> +#define HSIO_SERDES6G_DIG_CFG_MISC_CFG 0x88
> +#define HSIO_SERDES6G_DIG_CFG_MISC_CFG_LANE_RST BIT(0)
> +#define HSIO_MCB_SERDES6G_CFG 0xac
> +#define HSIO_MCB_SERDES6G_CFG_WR_ONE_SHOT BIT(31)
> +#define HSIO_MCB_SERDES6G_CFG_ADDR(x) (x)
> +
> +#define DEV_GMII_PORT_MODE_CLK 0x0
> +#define DEV_GMII_PORT_MODE_CLK_PHY_RST BIT(0)
> +#define DEV_GMII_MAC_CFG_MAC_ENA 0xc
> +#define DEV_GMII_MAC_CFG_MAC_ENA_RX_ENA BIT(4)
> +#define DEV_GMII_MAC_CFG_MAC_ENA_TX_ENA BIT(0)
> +
> +#define DEV_PORT_MODE_CLK 0x4
> +#define DEV_PORT_MODE_CLK_PHY_RST BIT(2)
> +#define DEV_PORT_MODE_CLK_LINK_SPEED_1000 1
> +#define DEV_MAC_CFG_MAC_ENA 0x10
> +#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 0x24
> +#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 0x40
> +#define DEV_PCS1G_CFG_PCS1G_CFG_PCS_ENA BIT(0)
> +#define DEV_PCS1G_CFG_PCS1G_MODE 0x44
> +#define DEV_PCS1G_CFG_PCS1G_SD 0x48
> +#define DEV_PCS1G_CFG_PCS1G_ANEG 0x4c
> +#define DEV_PCS1G_CFG_PCS1G_ANEG_ADV_ABILITY(x) ((x) << 16)
> +
> +#define XTR_EOF_0 (0x80000000u)
> +#define XTR_EOF_1 (0x80000001u)
> +#define XTR_EOF_2 (0x80000002u)
> +#define XTR_EOF_3 (0x80000003u)
> +#define XTR_PRUNED (0x80000004u)
> +#define XTR_ABORT (0x80000005u)
> +#define XTR_ESCAPE (0x80000006u)
> +#define XTR_NOT_READY (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 26
> +#define INTERNAL_PORT_MSK 0xFFFFFF
> +#define IFH_LEN 2
> +#define LUTON_BUF_CELL_SZ 60
> +#define ETH_ALEN 6
> +#define PGID_BROADCAST 28
> +#define PGID_UNICAST 29
> +#define PGID_SRC 80
> +
> +enum luton_target {
> + PORT0,
> + PORT1,
> + PORT2,
> + PORT3,
> + PORT4,
> + PORT5,
> + PORT6,
> + PORT7,
> + PORT8,
> + PORT9,
> + PORT10,
> + PORT11,
> + PORT12,
> + PORT13,
> + PORT14,
> + PORT15,
> + PORT16,
> + PORT17,
> + PORT18,
> + PORT19,
> + PORT20,
> + PORT21,
> + PORT22,
> + PORT23,
> + SYS,
> + ANA,
> + REW,
> + GCB,
> + QS,
> + HSIO,
> + TARGET_MAX,
> +};
> +
> +#define MAX_PORT (PORT23 - PORT0 + 1)
> +
> +#define MIN_INT_PORT PORT0
> +#define MAX_INT_PORT (PORT11 - PORT0 + 1)
> +#define MIN_EXT_PORT PORT12
> +#define MAX_EXT_PORT MAX_PORT
> +
> +/* MAC table entry types.
> + * ENTRYTYPE_NORMAL is subject to aging.
> + * ENTRYTYPE_LOCKED is not subject to aging.
> + */
> +enum macaccess_entry_type {
> + ENTRYTYPE_NORMAL = 0,
> + ENTRYTYPE_LOCKED,
> +};
> +
> +enum luton_mdio_target {
> + MIIM,
> + TARGET_MDIO_MAX,
> +};
> +
> +enum luton_phy_id {
> + INTERNAL,
> + EXTERNAL,
> + NUM_PHY,
> +};
> +
> +struct luton_private {
> + void __iomem *regs[TARGET_MAX];
> + struct mii_dev *bus[NUM_PHY];
> + struct luton_soc_data *data;
> +};
> +
> +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_STATUS_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(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;
> +}
> +
> +static struct mii_dev *luton_mdiobus_init(struct udevice *dev,
> + int mdiobus_id)
> +{
> + unsigned long phy_size[NUM_PHY];
> + phys_addr_t phy_base[NUM_PHY];
> + 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;
> +
> + /* gather 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[mdiobus_id].regs = ioremap(phy_base[mdiobus_id],
> + phy_size[mdiobus_id]);
> + bus->priv = &miim[mdiobus_id];
> + bus->read = mscc_miim_read;
> + bus->write = mscc_miim_write;
> +
> + if (mdio_register(bus))
> + return NULL;
> + else
> + return bus;
> +}
> +
> +static void luton_cpu_capture_setup(struct luton_private *priv)
> +{
> + int i;
> +
> + /* map the 8 CPU extraction queues to CPU port 26 */
> + writel(0x0, priv->regs[SYS] + SYS_SCH_CPU);
> +
> + for (i = 0; i <= 1; i++) {
> + /*
> + * One to one mapping from CPU Queue number to Group extraction
> + * number
> + */
> + writel(QS_XTR_MAP_ENA | (QS_XTR_MAP_GRP * i),
> + priv->regs[QS] + QS_XTR_MAP(i));
> +
> + /* Enable IFH insertion/parsing on CPU ports */
> + setbits_le32(priv->regs[REW] + REW_PORT_CFG(CPU_PORT + i),
> + REW_PORT_CFG_IFH_INSERT_ENA);
> +
> + /* Enable IFH parsing on CPU port 0 and 1 */
> + setbits_le32(priv->regs[SYS] + SYS_PORT_MODE(CPU_PORT + i),
> + SYS_PORT_MODE_INCL_INJ_HDR);
> + }
> +
> + /* 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(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[SYS] + SYS_SWITCH_PORT_MODE(CPU_PORT),
> + SYS_SWITCH_PORT_MODE_PORT_ENA);
> +
> + setbits_le32(priv->regs[SYS] + SYS_EGR_NO_SHARING, BIT(CPU_PORT));
> +}
> +
> +static void luton_gmii_port_init(struct luton_private *priv, int port)
> +{
> + void __iomem *regs = priv->regs[port];
> +
> + writel(0, regs + DEV_GMII_PORT_MODE_CLK);
> +
> + /* Enable MAC RX and TX */
> + writel(DEV_GMII_MAC_CFG_MAC_ENA_RX_ENA |
> + DEV_GMII_MAC_CFG_MAC_ENA_TX_ENA,
> + regs + DEV_GMII_MAC_CFG_MAC_ENA);
> +
> + /* 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 switching to/from port */
> + setbits_le32(priv->regs[SYS] + SYS_SWITCH_PORT_MODE(port - PORT0),
> + SYS_SWITCH_PORT_MODE_PORT_ENA);
> +}
> +
> +static void luton_port_init(struct luton_private *priv, int port)
> +{
> + void __iomem *regs = priv->regs[port];
> +
> + writel(0, regs + DEV_PORT_MODE_CLK);
> +
> + /* 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);
> +
> + /* 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 switching to/from port */
> + setbits_le32(priv->regs[SYS] + SYS_SWITCH_PORT_MODE(port - PORT0),
> + SYS_SWITCH_PORT_MODE_PORT_ENA);
> +}
> +
> +static void luton_ext_port_init(struct luton_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(7) |
> + DEV_MAC_CFG_MAC_IFG_RX_IFG1(1) |
> + DEV_MAC_CFG_MAC_IFG_RX_IFG2(5),
> + regs + DEV_MAC_CFG_MAC_IFG);
> +
> + /* Set link speed and release all resets */
> + writel(DEV_PORT_MODE_CLK_LINK_SPEED_1000,
> + regs + DEV_PORT_MODE_CLK);
> +
> + /* 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 switching to/from port */
> + setbits_le32(priv->regs[SYS] + SYS_SWITCH_PORT_MODE(port - PORT0),
> + SYS_SWITCH_PORT_MODE_PORT_ENA);
> +}
> +
> +static void serdes6g_write(struct luton_private *priv, u32 addr)
> +{
> + u32 data;
> +
> + writel(HSIO_MCB_SERDES6G_CFG_WR_ONE_SHOT |
> + HSIO_MCB_SERDES6G_CFG_ADDR(addr),
> + priv->regs[HSIO] + HSIO_MCB_SERDES6G_CFG);
> +
> + do {
> + data = readl(priv->regs[HSIO] + HSIO_MCB_SERDES6G_CFG);
> + } while (data & HSIO_MCB_SERDES6G_CFG_WR_ONE_SHOT);
> +
> + mdelay(100);
> +}
> +
> +static void serdes6g_cfg(struct luton_private *priv)
> +{
> + writel(HSIO_RCOMP_CFG_CFG0_MODE_SEL(0x3) |
> + HSIO_RCOMP_CFG_CFG0_RUN_CAL,
> + priv->regs[HSIO] + HSIO_RCOMP_CFG_CFG0);
> +
> + while (readl(priv->regs[HSIO] + HSIO_RCOMP_STATUS) &
> + HSIO_RCOMP_STATUS_BUSY)
> + ;
> +
> + writel(HSIO_SERDES6G_ANA_CFG_OB_CFG_SR(0xb) |
> + HSIO_SERDES6G_ANA_CFG_OB_CFG_SR_H |
> + HSIO_SERDES6G_ANA_CFG_OB_CFG_POST0(0x10) |
> + HSIO_SERDES6G_ANA_CFG_OB_CFG_POL |
> + HSIO_SERDES6G_ANA_CFG_OB_CFG_ENA1V_MODE,
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_OB_CFG);
> + writel(HSIO_SERDES6G_ANA_CFG_OB_CFG1_LEV(0x18) |
> + HSIO_SERDES6G_ANA_CFG_OB_CFG1_ENA_CAS(0x1),
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_OB_CFG1);
> + writel(HSIO_SERDES6G_ANA_CFG_IB_CFG_RESISTOR_CTRL(0xc) |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG_VBCOM(0x4) |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG_VBAC(0x5) |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG_RT(0xf) |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG_RF(0x4),
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_IB_CFG);
> + writel(HSIO_SERDES6G_ANA_CFG_IB_CFG1_RST |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_ENA_OFFSDC |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_ENA_OFFSAC |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_ANEG_MODE |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_CHF |
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_C(0x4),
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_IB_CFG1);
> + writel(HSIO_SERDES6G_ANA_CFG_DES_CFG_BW_ANA(0x5) |
> + HSIO_SERDES6G_ANA_CFG_DES_CFG_BW_HYST(0x5) |
> + HSIO_SERDES6G_ANA_CFG_DES_CFG_MBTR_CTRL(0x2) |
> + HSIO_SERDES6G_ANA_CFG_DES_CFG_PHS_CTRL(0x6),
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_DES_CFG);
> + writel(HSIO_SERDES6G_ANA_CFG_PLL_CFG_FSM_ENA |
> + HSIO_SERDES6G_ANA_CFG_PLL_CFG_FSM_CTRL_DATA(0x78),
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_PLL_CFG);
> + writel(HSIO_SERDES6G_ANA_CFG_COMMON_CFG_IF_MODE(0x30) |
> + HSIO_SERDES6G_ANA_CFG_COMMON_CFG_ENA_LANE,
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_COMMON_CFG);
> + /*
> + * There are 4 serdes6g, configure all except serdes6g0, therefore
> + * the address is b1110
> + */
> + serdes6g_write(priv, 0xe);
> +
> + writel(readl(priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_COMMON_CFG) |
> + HSIO_SERDES6G_ANA_CFG_COMMON_CFG_SYS_RST,
> + priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_COMMON_CFG);
> + serdes6g_write(priv, 0xe);
> +
> + clrbits_le32(priv->regs[HSIO] + HSIO_SERDES6G_ANA_CFG_IB_CFG1,
> + HSIO_SERDES6G_ANA_CFG_IB_CFG1_RST);
> + writel(HSIO_SERDES6G_DIG_CFG_MISC_CFG_LANE_RST,
> + priv->regs[HSIO] + HSIO_SERDES6G_DIG_CFG_MISC_CFG);
> + serdes6g_write(priv, 0xe);
> +}
> +
> +static int luton_switch_init(struct luton_private *priv)
> +{
> + setbits_le32(priv->regs[HSIO] + HSIO_PLL5G_CFG_PLL5G_CFG2, BIT(1));
> + clrbits_le32(priv->regs[HSIO] + HSIO_PLL5G_CFG_PLL5G_CFG2, BIT(1));
> +
> + /* 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)) {
> + printf("Timeout in memory reset\n");
> + }
> +
> + /* Enable switch core */
> + setbits_le32(priv->regs[SYS] + SYS_SYSTEM_RST_CFG,
> + SYS_SYSTEM_RST_CORE_ENA);
> +
> + /* Setup the Serdes6g macros */
> + serdes6g_cfg(priv);
> +
> + return 0;
> +}
> +
> +static void luton_switch_flush(struct luton_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 luton_initialize(struct luton_private *priv)
> +{
> + int ret, i;
> +
> + /* Initialize switch memories, enable core */
> + ret = luton_switch_init(priv);
> + if (ret)
> + return ret;
> +
> + /*
> + * Disable port-to-port by switching
> + * Put front ports in "port isolation modes" - i.e. they can't 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 */
> + luton_switch_flush(priv);
> +
> + /* Setup frame ageing - "2 sec" - The unit is 4ns on Luton*/
> + writel(2000000000 / 4,
> + priv->regs[SYS] + SYS_FRM_AGING);
> +
> + for (i = PORT0; i < MAX_PORT; i++) {
> + if (i < PORT10)
> + luton_gmii_port_init(priv, i);
> + else
> + if (i == PORT10 || i == PORT11)
> + luton_port_init(priv, i);
> + else
> + luton_ext_port_init(priv, i);
> + }
> +
> + luton_cpu_capture_setup(priv);
> +
> + return 0;
> +}
> +
> +static inline int luton_vlant_wait_for_completion(struct luton_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 luton_mac_table_add(struct luton_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 = luton_vlant_wait_for_completion(priv);
> +
> + return ret;
> +}
> +
> +static int luton_write_hwaddr(struct udevice *dev)
> +{
> + struct luton_private *priv = dev_get_priv(dev);
> + struct eth_pdata *pdata = dev_get_platdata(dev);
> +
> + luton_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST);
> +
> + writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
> +
> + return 0;
> +}
> +
> +static int luton_start(struct udevice *dev)
> +{
> + struct luton_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 = luton_initialize(priv);
> + if (ret)
> + return ret;
> +
> + /* Set MAC address tables entries for CPU redirection */
> + luton_mac_table_add(priv, mac, PGID_BROADCAST);
> +
> + writel(BIT(CPU_PORT) | INTERNAL_PORT_MSK,
> + priv->regs[ANA] + ANA_PGID(PGID_BROADCAST));
> +
> + luton_mac_table_add(priv, pdata->enetaddr, PGID_UNICAST);
> +
> + writel(BIT(CPU_PORT), priv->regs[ANA] + ANA_PGID(PGID_UNICAST));
> +
> + return 0;
> +}
> +
> +static void luton_stop(struct udevice *dev)
> +{
> + struct luton_private *priv = dev_get_priv(dev);
> +
> + /*
> + * Switch core only reset affects VCORE-III bus and MIPS frequency
> + * and thereby also the DDR SDRAM controller. The workaround is to
> + * not to redirect any trafic to the CPU after the data transfer.
> + */
> + writel(GENMASK(9, 2), priv->regs[SYS] + SYS_SCH_CPU);
> +}
> +
> +static int luton_send(struct udevice *dev, void *packet, int length)
> +{
> + struct luton_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));
> +
> + ifh[0] = IFH_INJ_BYPASS | port;
> + ifh[1] = (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 < (LUTON_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 < LUTON_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 luton_recv(struct udevice *dev, int flags, uchar **packetp)
> +{
> + struct luton_private *priv = dev_get_priv(dev);
> + u8 grp = 0; /* Recv everything on CPU group 0 */
> + u32 *rxbuf = (u32 *)net_rx_packets[0];
> + int byte_cnt = 0;
> + int i = 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 luton_probe(struct udevice *dev)
> +{
> + struct luton_private *priv = dev_get_priv(dev);
> + int i;
> +
> + struct {
> + enum luton_target id;
> + char *name;
> + } reg[] = {
> + { PORT0, "port0" },
> + { PORT1, "port1" },
> + { PORT2, "port2" },
> + { PORT3, "port3" },
> + { PORT4, "port4" },
> + { PORT5, "port5" },
> + { PORT6, "port6" },
> + { PORT7, "port7" },
> + { PORT8, "port8" },
> + { PORT9, "port9" },
> + { PORT10, "port10" },
> + { PORT11, "port11" },
> + { PORT12, "port12" },
> + { PORT13, "port13" },
> + { PORT14, "port14" },
> + { PORT15, "port15" },
> + { PORT16, "port16" },
> + { PORT17, "port17" },
> + { PORT18, "port18" },
> + { PORT19, "port19" },
> + { PORT20, "port20" },
> + { PORT21, "port21" },
> + { PORT22, "port22" },
> + { PORT23, "port23" },
> + { SYS, "sys" },
> + { ANA, "ana" },
> + { REW, "rew" },
> + { GCB, "gcb" },
> + { QS, "qs" },
> + { HSIO, "hsio" },
> + };
> +
> + if (!priv)
> + return -EINVAL;
> +
> + 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]) {
> + debug
> + ("Error can't get regs base addresses for %s\n",
> + reg[i].name);
> + return -ENOMEM;
> + }
> + }
> +
> + /* Release reset in the CU-PHY */
> + writel(0, priv->regs[GCB] + GCB_DEVCPU_RST_SOFT_CHIP_RST);
> +
> + /* Ports with ext phy don't need to reset clk */
> + for (i = PORT0; i < MAX_INT_PORT; i++) {
> + if (i < PORT10)
> + clrbits_le32(priv->regs[i] + DEV_GMII_PORT_MODE_CLK,
> + DEV_GMII_PORT_MODE_CLK_PHY_RST);
> + else
> + clrbits_le32(priv->regs[i] + DEV_PORT_MODE_CLK,
> + DEV_PORT_MODE_CLK_PHY_RST);
> + }
> +
> + /* Wait for internal PHY to be ready */
> + if (wait_for_bit_le32(priv->regs[GCB] + GCB_MISC_STAT,
> + GCB_MISC_STAT_PHY_READY, true, 500, false))
> + return -EACCES;
> +
> + priv->bus[INTERNAL] = luton_mdiobus_init(dev, INTERNAL);
> +
> + for (i = 0; i < MAX_INT_PORT; i++) {
> + phy_connect(priv->bus[INTERNAL], i, dev,
> + PHY_INTERFACE_MODE_NONE);
> + }
> +
> + /*
> + * coma_mode is need on only one phy, because all the other phys
> + * will be affected.
> + */
> + mscc_miim_write(priv->bus[INTERNAL], 0, 0, 31, 0x10);
> + mscc_miim_write(priv->bus[INTERNAL], 0, 0, 14, 0x800);
> + mscc_miim_write(priv->bus[INTERNAL], 0, 0, 31, 0);
> +
> + return 0;
> +}
> +
> +static int luton_remove(struct udevice *dev)
> +{
> + struct luton_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 luton_ops = {
> + .start = luton_start,
> + .stop = luton_stop,
> + .send = luton_send,
> + .recv = luton_recv,
> + .write_hwaddr = luton_write_hwaddr,
> +};
> +
> +static const struct udevice_id mscc_luton_ids[] = {
> + {.compatible = "mscc,vsc7527-switch", },
> + { /* Sentinel */ }
> +};
> +
> +U_BOOT_DRIVER(luton) = {
> + .name = "luton-switch",
> + .id = UCLASS_ETH,
> + .of_match = mscc_luton_ids,
> + .probe = luton_probe,
> + .remove = luton_remove,
> + .ops = &luton_ops,
> + .priv_auto_alloc_size = sizeof(struct luton_private),
> + .platdata_auto_alloc_size = sizeof(struct eth_pdata),
> +};
> --
> 2.7.4
>

--
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering