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

Horatiu Vultur
2019-01-28T10:29:43Z

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 +++++++++++++++++++++++++++++++++++++++++++++
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