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![Horatiu Vultur](/assets/img/avatar_default.png)
Add network driver for Microsemi Ethernet switch. It is present on Serval SoCs. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
704 lines
19 KiB
C
704 lines
19 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (c) 2019 Microsemi Corporation
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*/
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#include <common.h>
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#include <config.h>
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#include <dm.h>
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#include <dm/of_access.h>
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#include <dm/of_addr.h>
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#include <fdt_support.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <miiphy.h>
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#include <net.h>
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#include <wait_bit.h>
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#include "mscc_xfer.h"
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#include "mscc_mac_table.h"
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#define GCB_MIIM_MII_STATUS 0x0
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#define GCB_MIIM_STAT_BUSY BIT(3)
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#define GCB_MIIM_MII_CMD 0x8
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#define GCB_MIIM_MII_CMD_OPR_WRITE BIT(1)
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#define GCB_MIIM_MII_CMD_OPR_READ BIT(2)
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#define GCB_MIIM_MII_CMD_WRDATA(x) ((x) << 4)
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#define GCB_MIIM_MII_CMD_REGAD(x) ((x) << 20)
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#define GCB_MIIM_MII_CMD_PHYAD(x) ((x) << 25)
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#define GCB_MIIM_MII_CMD_VLD BIT(31)
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#define GCB_MIIM_DATA 0xC
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#define GCB_MIIM_DATA_ERROR (0x2 << 16)
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#define ANA_PORT_VLAN_CFG(x) (0xc000 + 0x100 * (x))
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#define ANA_PORT_VLAN_CFG_AWARE_ENA BIT(20)
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#define ANA_PORT_VLAN_CFG_POP_CNT(x) ((x) << 18)
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#define ANA_PORT_PORT_CFG(x) (0xc070 + 0x100 * (x))
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#define ANA_PORT_PORT_CFG_RECV_ENA BIT(6)
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#define ANA_PGID(x) (0x9c00 + 4 * (x))
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#define HSIO_ANA_SERDES1G_DES_CFG 0x3c
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#define HSIO_ANA_SERDES1G_DES_CFG_BW_HYST(x) ((x) << 1)
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#define HSIO_ANA_SERDES1G_DES_CFG_BW_ANA(x) ((x) << 5)
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#define HSIO_ANA_SERDES1G_DES_CFG_MBTR_CTRL(x) ((x) << 8)
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#define HSIO_ANA_SERDES1G_DES_CFG_PHS_CTRL(x) ((x) << 13)
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#define HSIO_ANA_SERDES1G_IB_CFG 0x40
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#define HSIO_ANA_SERDES1G_IB_CFG_RESISTOR_CTRL(x) (x)
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#define HSIO_ANA_SERDES1G_IB_CFG_EQ_GAIN(x) ((x) << 6)
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#define HSIO_ANA_SERDES1G_IB_CFG_ENA_OFFSET_COMP BIT(9)
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#define HSIO_ANA_SERDES1G_IB_CFG_ENA_DETLEV BIT(11)
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#define HSIO_ANA_SERDES1G_IB_CFG_ENA_CMV_TERM BIT(13)
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#define HSIO_ANA_SERDES1G_IB_CFG_DET_LEV(x) ((x) << 19)
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#define HSIO_ANA_SERDES1G_IB_CFG_ACJTAG_HYST(x) ((x) << 24)
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#define HSIO_ANA_SERDES1G_OB_CFG 0x44
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#define HSIO_ANA_SERDES1G_OB_CFG_RESISTOR_CTRL(x) (x)
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#define HSIO_ANA_SERDES1G_OB_CFG_VCM_CTRL(x) ((x) << 4)
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#define HSIO_ANA_SERDES1G_OB_CFG_CMM_BIAS_CTRL(x) ((x) << 10)
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#define HSIO_ANA_SERDES1G_OB_CFG_AMP_CTRL(x) ((x) << 13)
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#define HSIO_ANA_SERDES1G_OB_CFG_SLP(x) ((x) << 17)
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#define HSIO_ANA_SERDES1G_SER_CFG 0x48
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#define HSIO_ANA_SERDES1G_COMMON_CFG 0x4c
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#define HSIO_ANA_SERDES1G_COMMON_CFG_IF_MODE BIT(0)
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#define HSIO_ANA_SERDES1G_COMMON_CFG_ENA_LANE BIT(18)
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#define HSIO_ANA_SERDES1G_COMMON_CFG_SYS_RST BIT(31)
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#define HSIO_ANA_SERDES1G_PLL_CFG 0x50
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#define HSIO_ANA_SERDES1G_PLL_CFG_FSM_ENA BIT(7)
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#define HSIO_ANA_SERDES1G_PLL_CFG_FSM_CTRL_DATA(x) ((x) << 8)
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#define HSIO_ANA_SERDES1G_PLL_CFG_ENA_RC_DIV2 BIT(21)
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#define HSIO_DIG_SERDES1G_DFT_CFG0 0x58
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#define HSIO_DIG_SERDES1G_MISC_CFG 0x6c
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#define HSIO_DIG_SERDES1G_MISC_CFG_LANE_RST BIT(0)
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#define HSIO_MCB_SERDES1G_CFG 0x74
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#define HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT BIT(31)
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#define HSIO_MCB_SERDES1G_CFG_ADDR(x) (x)
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#define SYS_FRM_AGING 0x584
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#define SYS_FRM_AGING_ENA BIT(20)
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#define SYS_SYSTEM_RST_CFG 0x518
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#define SYS_SYSTEM_RST_MEM_INIT BIT(5)
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#define SYS_SYSTEM_RST_MEM_ENA BIT(6)
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#define SYS_SYSTEM_RST_CORE_ENA BIT(7)
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#define SYS_PORT_MODE(x) (0x524 + 0x4 * (x))
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#define SYS_PORT_MODE_INCL_INJ_HDR(x) ((x) << 4)
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#define SYS_PORT_MODE_INCL_XTR_HDR(x) ((x) << 2)
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#define SYS_PAUSE_CFG(x) (0x65c + 0x4 * (x))
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#define SYS_PAUSE_CFG_PAUSE_ENA BIT(0)
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#define QSYS_SWITCH_PORT_MODE(x) (0x15a34 + 0x4 * (x))
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#define QSYS_SWITCH_PORT_MODE_PORT_ENA BIT(13)
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#define QSYS_EGR_NO_SHARING 0x15a9c
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#define QSYS_QMAP 0x15adc
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/* Port registers */
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#define DEV_CLOCK_CFG 0x0
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#define DEV_CLOCK_CFG_LINK_SPEED_1000 1
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#define DEV_MAC_ENA_CFG 0x10
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#define DEV_MAC_ENA_CFG_RX_ENA BIT(4)
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#define DEV_MAC_ENA_CFG_TX_ENA BIT(0)
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#define DEV_MAC_IFG_CFG 0x24
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#define DEV_MAC_IFG_CFG_TX_IFG(x) ((x) << 8)
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#define DEV_MAC_IFG_CFG_RX_IFG2(x) ((x) << 4)
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#define DEV_MAC_IFG_CFG_RX_IFG1(x) (x)
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#define PCS1G_CFG 0x3c
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#define PCS1G_MODE_CFG_SGMII_MODE_ENA BIT(0)
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#define PCS1G_MODE_CFG 0x40
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#define PCS1G_SD_CFG 0x44
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#define PCS1G_ANEG_CFG 0x48
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#define PCS1G_ANEG_CFG_ADV_ABILITY(x) ((x) << 16)
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#define QS_XTR_GRP_CFG(x) (4 * (x))
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#define QS_XTR_GRP_CFG_MODE(x) ((x) << 2)
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#define QS_XTR_GRP_CFG_BYTE_SWAP BIT(0)
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#define QS_INJ_GRP_CFG(x) (0x24 + (x) * 4)
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#define QS_INJ_GRP_CFG_MODE(x) ((x) << 2)
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#define QS_INJ_GRP_CFG_BYTE_SWAP BIT(0)
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#define IFH_INJ_BYPASS BIT(31)
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#define IFH_TAG_TYPE_C 0
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#define MAC_VID 1
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#define CPU_PORT 11
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#define INTERNAL_PORT_MSK 0xFF
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#define IFH_LEN 4
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#define ETH_ALEN 6
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#define PGID_BROADCAST 13
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#define PGID_UNICAST 14
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static const char *const regs_names[] = {
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"port0", "port1", "port2", "port3", "port4", "port5", "port6",
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"port7", "port8", "port9", "port10",
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"ana", "qs", "qsys", "rew", "sys", "hsio",
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};
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#define REGS_NAMES_COUNT ARRAY_SIZE(regs_names) + 1
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#define MAX_PORT 11
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enum serval_ctrl_regs {
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ANA = MAX_PORT,
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QS,
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QSYS,
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REW,
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SYS,
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HSIO,
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};
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#define SERVAL_MIIM_BUS_COUNT 2
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struct serval_phy_port_t {
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size_t phy_addr;
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struct mii_dev *bus;
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u8 serdes_index;
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u8 phy_mode;
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};
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struct serval_private {
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void __iomem *regs[REGS_NAMES_COUNT];
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struct mii_dev *bus[SERVAL_MIIM_BUS_COUNT];
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struct serval_phy_port_t ports[MAX_PORT];
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};
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struct mscc_miim_dev {
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void __iomem *regs;
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phys_addr_t miim_base;
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unsigned long miim_size;
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struct mii_dev *bus;
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};
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static const unsigned long serval_regs_qs[] = {
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[MSCC_QS_XTR_RD] = 0x8,
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[MSCC_QS_XTR_FLUSH] = 0x18,
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[MSCC_QS_XTR_DATA_PRESENT] = 0x1c,
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[MSCC_QS_INJ_WR] = 0x2c,
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[MSCC_QS_INJ_CTRL] = 0x34,
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};
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static const unsigned long serval_regs_ana_table[] = {
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[MSCC_ANA_TABLES_MACHDATA] = 0x9b34,
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[MSCC_ANA_TABLES_MACLDATA] = 0x9b38,
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[MSCC_ANA_TABLES_MACACCESS] = 0x9b3c,
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};
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static struct mscc_miim_dev miim[SERVAL_MIIM_BUS_COUNT];
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static int miim_count = -1;
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static int mscc_miim_wait_ready(struct mscc_miim_dev *miim)
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{
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return wait_for_bit_le32(miim->regs + GCB_MIIM_MII_STATUS,
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GCB_MIIM_STAT_BUSY, false, 250, false);
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}
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static int mscc_miim_read(struct mii_dev *bus, int addr, int devad, int reg)
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{
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struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
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u32 val;
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int ret;
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ret = mscc_miim_wait_ready(miim);
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if (ret)
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goto out;
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writel(GCB_MIIM_MII_CMD_VLD | GCB_MIIM_MII_CMD_PHYAD(addr) |
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GCB_MIIM_MII_CMD_REGAD(reg) | GCB_MIIM_MII_CMD_OPR_READ,
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miim->regs + GCB_MIIM_MII_CMD);
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ret = mscc_miim_wait_ready(miim);
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if (ret)
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goto out;
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val = readl(miim->regs + GCB_MIIM_DATA);
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if (val & GCB_MIIM_DATA_ERROR) {
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ret = -EIO;
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goto out;
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}
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ret = val & 0xFFFF;
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out:
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return ret;
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}
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static int mscc_miim_write(struct mii_dev *bus, int addr, int devad, int reg,
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u16 val)
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{
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struct mscc_miim_dev *miim = (struct mscc_miim_dev *)bus->priv;
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int ret;
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ret = mscc_miim_wait_ready(miim);
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if (ret < 0)
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goto out;
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writel(GCB_MIIM_MII_CMD_VLD | GCB_MIIM_MII_CMD_PHYAD(addr) |
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GCB_MIIM_MII_CMD_REGAD(reg) | GCB_MIIM_MII_CMD_WRDATA(val) |
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GCB_MIIM_MII_CMD_OPR_WRITE, miim->regs + GCB_MIIM_MII_CMD);
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out:
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return ret;
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}
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static struct mii_dev *serval_mdiobus_init(phys_addr_t miim_base,
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unsigned long miim_size)
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{
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struct mii_dev *bus;
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bus = mdio_alloc();
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if (!bus)
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return NULL;
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++miim_count;
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sprintf(bus->name, "miim-bus%d", miim_count);
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miim[miim_count].regs = ioremap(miim_base, miim_size);
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miim[miim_count].miim_base = miim_base;
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miim[miim_count].miim_size = miim_size;
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bus->priv = &miim[miim_count];
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bus->read = mscc_miim_read;
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bus->write = mscc_miim_write;
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if (mdio_register(bus))
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return NULL;
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miim[miim_count].bus = bus;
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return bus;
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}
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static void serval_cpu_capture_setup(struct serval_private *priv)
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{
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int i;
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/* map the 8 CPU extraction queues to CPU port 11 */
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writel(0, priv->regs[QSYS] + QSYS_QMAP);
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for (i = 0; i <= 1; i++) {
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/*
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* Do byte-swap and expect status after last data word
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* Extraction: Mode: manual extraction) | Byte_swap
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*/
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writel(QS_XTR_GRP_CFG_MODE(1) | QS_XTR_GRP_CFG_BYTE_SWAP,
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priv->regs[QS] + QS_XTR_GRP_CFG(i));
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/*
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* Injection: Mode: manual extraction | Byte_swap
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*/
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writel(QS_INJ_GRP_CFG_MODE(1) | QS_INJ_GRP_CFG_BYTE_SWAP,
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priv->regs[QS] + QS_INJ_GRP_CFG(i));
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}
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for (i = 0; i <= 1; i++)
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/* Enable IFH insertion/parsing on CPU ports */
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writel(SYS_PORT_MODE_INCL_INJ_HDR(1) |
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SYS_PORT_MODE_INCL_XTR_HDR(1),
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priv->regs[SYS] + SYS_PORT_MODE(CPU_PORT + i));
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/*
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* Setup the CPU port as VLAN aware to support switching frames
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* based on tags
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*/
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writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) |
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MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(CPU_PORT));
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/* Disable learning (only RECV_ENA must be set) */
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writel(ANA_PORT_PORT_CFG_RECV_ENA,
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priv->regs[ANA] + ANA_PORT_PORT_CFG(CPU_PORT));
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/* Enable switching to/from cpu port */
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setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(CPU_PORT),
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QSYS_SWITCH_PORT_MODE_PORT_ENA);
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/* No pause on CPU port - not needed (off by default) */
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clrbits_le32(priv->regs[SYS] + SYS_PAUSE_CFG(CPU_PORT),
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SYS_PAUSE_CFG_PAUSE_ENA);
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setbits_le32(priv->regs[QSYS] + QSYS_EGR_NO_SHARING, BIT(CPU_PORT));
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}
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static void serval_port_init(struct serval_private *priv, int port)
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{
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void __iomem *regs = priv->regs[port];
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/* Enable PCS */
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writel(PCS1G_MODE_CFG_SGMII_MODE_ENA, regs + PCS1G_CFG);
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/* Disable Signal Detect */
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writel(0, regs + PCS1G_SD_CFG);
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/* Enable MAC RX and TX */
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writel(DEV_MAC_ENA_CFG_RX_ENA | DEV_MAC_ENA_CFG_TX_ENA,
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regs + DEV_MAC_ENA_CFG);
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/* Clear sgmii_mode_ena */
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writel(0, regs + PCS1G_MODE_CFG);
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/*
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* Clear sw_resolve_ena(bit 0) and set adv_ability to
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* something meaningful just in case
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*/
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writel(PCS1G_ANEG_CFG_ADV_ABILITY(0x20), regs + PCS1G_ANEG_CFG);
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/* Set MAC IFG Gaps */
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writel(DEV_MAC_IFG_CFG_TX_IFG(5) | DEV_MAC_IFG_CFG_RX_IFG1(5) |
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DEV_MAC_IFG_CFG_RX_IFG2(1), regs + DEV_MAC_IFG_CFG);
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/* Set link speed and release all resets */
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writel(DEV_CLOCK_CFG_LINK_SPEED_1000, regs + DEV_CLOCK_CFG);
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/* Make VLAN aware for CPU traffic */
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writel(ANA_PORT_VLAN_CFG_AWARE_ENA | ANA_PORT_VLAN_CFG_POP_CNT(1) |
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MAC_VID, priv->regs[ANA] + ANA_PORT_VLAN_CFG(port));
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/* Enable the port in the core */
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setbits_le32(priv->regs[QSYS] + QSYS_SWITCH_PORT_MODE(port),
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QSYS_SWITCH_PORT_MODE_PORT_ENA);
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}
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static void serdes_write(void __iomem *base, u32 addr)
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{
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u32 data;
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writel(HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT |
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HSIO_MCB_SERDES1G_CFG_ADDR(addr),
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base + HSIO_MCB_SERDES1G_CFG);
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do {
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data = readl(base + HSIO_MCB_SERDES1G_CFG);
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} while (data & HSIO_MCB_SERDES1G_CFG_WR_ONE_SHOT);
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mdelay(100);
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}
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static void serdes1g_setup(void __iomem *base, uint32_t addr,
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phy_interface_t interface)
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{
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writel(0x0, base + HSIO_ANA_SERDES1G_SER_CFG);
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writel(0x0, base + HSIO_DIG_SERDES1G_DFT_CFG0);
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writel(HSIO_ANA_SERDES1G_IB_CFG_RESISTOR_CTRL(11) |
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HSIO_ANA_SERDES1G_IB_CFG_EQ_GAIN(0) |
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HSIO_ANA_SERDES1G_IB_CFG_ENA_OFFSET_COMP |
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HSIO_ANA_SERDES1G_IB_CFG_ENA_CMV_TERM |
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HSIO_ANA_SERDES1G_IB_CFG_ACJTAG_HYST(1),
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base + HSIO_ANA_SERDES1G_IB_CFG);
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writel(HSIO_ANA_SERDES1G_DES_CFG_BW_HYST(7) |
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HSIO_ANA_SERDES1G_DES_CFG_BW_ANA(6) |
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HSIO_ANA_SERDES1G_DES_CFG_MBTR_CTRL(2) |
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HSIO_ANA_SERDES1G_DES_CFG_PHS_CTRL(6),
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base + HSIO_ANA_SERDES1G_DES_CFG);
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writel(HSIO_ANA_SERDES1G_OB_CFG_RESISTOR_CTRL(1) |
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HSIO_ANA_SERDES1G_OB_CFG_VCM_CTRL(4) |
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HSIO_ANA_SERDES1G_OB_CFG_CMM_BIAS_CTRL(2) |
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HSIO_ANA_SERDES1G_OB_CFG_AMP_CTRL(12) |
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HSIO_ANA_SERDES1G_OB_CFG_SLP(3),
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base + HSIO_ANA_SERDES1G_OB_CFG);
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writel(HSIO_ANA_SERDES1G_COMMON_CFG_IF_MODE |
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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),
|
|
};
|