From 6706b115a632ac46ff13fd457c7b8a507b922d50 Mon Sep 17 00:00:00 2001 From: Codrin Ciubotariu Date: Mon, 12 Jan 2015 14:08:33 +0200 Subject: net/vsc9953: Add driver for Vitesse VSC9953 L2 Switch IP This patch adds a driver for VSC9953 L2 Switch. This Vitesse IP is integrated in Freescale T1040 and T1020 SoCs. The L2 switch has 10 Ethernet ports: 2 internal fixed-links (ports 8 and 9) at 2.5 Gbps and and 8 external ports at 1 Gbps. The external ports may be connected to PHYs over QSGMII and SGMII. Commands have also been added to enable/disable a port and to check a port's link speed, duplexity and status. The commands are: ethsw port enable|disable - enable/disable an l2 switch port ethsw port show - show an l2 switch port's configuration port_nr=0..9; use "all" for all ports For more detailse please see doc/README.t1040-l2switch Signed-off-by: Codrin Ciubotariu Acked-by: Joe Hershberger Reviewed-by: York Sun --- drivers/net/Makefile | 1 + drivers/net/vsc9953.c | 497 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 498 insertions(+) create mode 100644 drivers/net/vsc9953.c (limited to 'drivers') diff --git a/drivers/net/Makefile b/drivers/net/Makefile index fb0cf8c..46c4ac6 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -66,3 +66,4 @@ obj-$(CONFIG_XILINX_LL_TEMAC) += xilinx_ll_temac.o xilinx_ll_temac_mdio.o \ xilinx_ll_temac_fifo.o xilinx_ll_temac_sdma.o obj-$(CONFIG_ZYNQ_GEM) += zynq_gem.o obj-$(CONFIG_FSL_MC_ENET) += fsl_mc/ +obj-$(CONFIG_VSC9953) += vsc9953.o diff --git a/drivers/net/vsc9953.c b/drivers/net/vsc9953.c new file mode 100644 index 0000000..9fc3c18 --- /dev/null +++ b/drivers/net/vsc9953.c @@ -0,0 +1,497 @@ +/* + * Copyright 2014 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + * + * Driver for the Vitesse VSC9953 L2 Switch + */ + +#include +#include +#include +#include +#include + +static struct vsc9953_info vsc9953_l2sw = { + .port[0] = VSC9953_PORT_INFO_INITIALIZER(0), + .port[1] = VSC9953_PORT_INFO_INITIALIZER(1), + .port[2] = VSC9953_PORT_INFO_INITIALIZER(2), + .port[3] = VSC9953_PORT_INFO_INITIALIZER(3), + .port[4] = VSC9953_PORT_INFO_INITIALIZER(4), + .port[5] = VSC9953_PORT_INFO_INITIALIZER(5), + .port[6] = VSC9953_PORT_INFO_INITIALIZER(6), + .port[7] = VSC9953_PORT_INFO_INITIALIZER(7), + .port[8] = VSC9953_PORT_INFO_INITIALIZER(8), + .port[9] = VSC9953_PORT_INFO_INITIALIZER(9), +}; + +void vsc9953_port_info_set_mdio(int port, struct mii_dev *bus) +{ + if (!VSC9953_PORT_CHECK(port)) + return; + + vsc9953_l2sw.port[port].bus = bus; +} + +void vsc9953_port_info_set_phy_address(int port, int address) +{ + if (!VSC9953_PORT_CHECK(port)) + return; + + vsc9953_l2sw.port[port].phyaddr = address; +} + +void vsc9953_port_info_set_phy_int(int port, phy_interface_t phy_int) +{ + if (!VSC9953_PORT_CHECK(port)) + return; + + vsc9953_l2sw.port[port].enet_if = phy_int; +} + +void vsc9953_port_enable(int port) +{ + if (!VSC9953_PORT_CHECK(port)) + return; + + vsc9953_l2sw.port[port].enabled = 1; +} + +void vsc9953_port_disable(int port) +{ + if (!VSC9953_PORT_CHECK(port)) + return; + + vsc9953_l2sw.port[port].enabled = 0; +} + +static void vsc9953_mdio_write(struct vsc9953_mii_mng *phyregs, int port_addr, + int regnum, int value) +{ + int timeout = 50000; + + out_le32(&phyregs->miimcmd, (0x1 << 31) | ((port_addr & 0x1f) << 25) | + ((regnum & 0x1f) << 20) | ((value & 0xffff) << 4) | + (0x1 << 1)); + asm("sync"); + + while ((in_le32(&phyregs->miimstatus) & 0x8) && --timeout) + udelay(1); + + if (timeout == 0) + debug("Timeout waiting for MDIO write\n"); +} + +static int vsc9953_mdio_read(struct vsc9953_mii_mng *phyregs, int port_addr, + int regnum) +{ + int value = 0xFFFF; + int timeout = 50000; + + while ((in_le32(&phyregs->miimstatus) & MIIMIND_OPR_PEND) && --timeout) + udelay(1); + if (timeout == 0) { + debug("Timeout waiting for MDIO operation to finish\n"); + return value; + } + + /* Put the address of the phy, and the register + * number into MIICMD + */ + out_le32(&phyregs->miimcmd, (0x1 << 31) | ((port_addr & 0x1f) << 25) | + ((regnum & 0x1f) << 20) | ((value & 0xffff) << 4) | + (0x2 << 1)); + + timeout = 50000; + /* Wait for the the indication that the read is done */ + while ((in_le32(&phyregs->miimstatus) & 0x8) && --timeout) + udelay(1); + if (timeout == 0) + debug("Timeout waiting for MDIO read\n"); + + /* Grab the value read from the PHY */ + value = in_le32(&phyregs->miimdata); + + if ((value & 0x00030000) == 0) + return value & 0x0000ffff; + + return value; +} + +static int init_phy(struct eth_device *dev) +{ + struct vsc9953_port_info *l2sw_port = dev->priv; + struct phy_device *phydev = NULL; + +#ifdef CONFIG_PHYLIB + if (!l2sw_port->bus) + return 0; + phydev = phy_connect(l2sw_port->bus, l2sw_port->phyaddr, dev, + l2sw_port->enet_if); + if (!phydev) { + printf("Failed to connect\n"); + return -1; + } + + phydev->supported &= SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full | + SUPPORTED_100baseT_Half | + SUPPORTED_100baseT_Full | + SUPPORTED_1000baseT_Full; + phydev->advertising = phydev->supported; + + l2sw_port->phydev = phydev; + + phy_config(phydev); +#endif + + return 0; +} + +static int vsc9953_port_init(int port) +{ + struct eth_device *dev; + + /* Internal ports never have a PHY */ + if (VSC9953_INTERNAL_PORT_CHECK(port)) + return 0; + + /* alloc eth device */ + dev = (struct eth_device *)calloc(1, sizeof(struct eth_device)); + if (!dev) + return 1; + + sprintf(dev->name, "SW@PORT%d", port); + dev->priv = &vsc9953_l2sw.port[port]; + dev->init = NULL; + dev->halt = NULL; + dev->send = NULL; + dev->recv = NULL; + + if (init_phy(dev)) { + free(dev); + return 1; + } + + return 0; +} + +void vsc9953_init(bd_t *bis) +{ + u32 i, hdx_cfg = 0, phy_addr = 0; + int timeout; + struct vsc9953_system_reg *l2sys_reg; + struct vsc9953_qsys_reg *l2qsys_reg; + struct vsc9953_dev_gmii *l2dev_gmii_reg; + struct vsc9953_analyzer *l2ana_reg; + struct vsc9953_devcpu_gcb *l2dev_gcb; + + l2dev_gmii_reg = (struct vsc9953_dev_gmii *)(VSC9953_OFFSET + + VSC9953_DEV_GMII_OFFSET); + + l2ana_reg = (struct vsc9953_analyzer *)(VSC9953_OFFSET + + VSC9953_ANA_OFFSET); + + l2sys_reg = (struct vsc9953_system_reg *)(VSC9953_OFFSET + + VSC9953_SYS_OFFSET); + + l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET + + VSC9953_QSYS_OFFSET); + + l2dev_gcb = (struct vsc9953_devcpu_gcb *)(VSC9953_OFFSET + + VSC9953_DEVCPU_GCB); + + out_le32(&l2dev_gcb->chip_regs.soft_rst, + CONFIG_VSC9953_SOFT_SWC_RST_ENA); + timeout = 50000; + while ((in_le32(&l2dev_gcb->chip_regs.soft_rst) & + CONFIG_VSC9953_SOFT_SWC_RST_ENA) && --timeout) + udelay(1); /* busy wait for vsc9953 soft reset */ + if (timeout == 0) + debug("Timeout waiting for VSC9953 to reset\n"); + + out_le32(&l2sys_reg->sys.reset_cfg, CONFIG_VSC9953_MEM_ENABLE | + CONFIG_VSC9953_MEM_INIT); + + timeout = 50000; + while ((in_le32(&l2sys_reg->sys.reset_cfg) & + CONFIG_VSC9953_MEM_INIT) && --timeout) + udelay(1); /* busy wait for vsc9953 memory init */ + if (timeout == 0) + debug("Timeout waiting for VSC9953 memory to initialize\n"); + + out_le32(&l2sys_reg->sys.reset_cfg, (in_le32(&l2sys_reg->sys.reset_cfg) + | CONFIG_VSC9953_CORE_ENABLE)); + + /* VSC9953 Setting to be done once only */ + out_le32(&l2qsys_reg->sys.ext_cpu_cfg, 0x00000b00); + + for (i = 0; i < VSC9953_MAX_PORTS; i++) { + if (vsc9953_port_init(i)) + printf("Failed to initialize l2switch port %d\n", i); + + /* Enable VSC9953 GMII Ports Port ID 0 - 7 */ + if (VSC9953_INTERNAL_PORT_CHECK(i)) { + out_le32(&l2ana_reg->pfc[i].pfc_cfg, + CONFIG_VSC9953_PFC_FC_QSGMII); + out_le32(&l2sys_reg->pause_cfg.mac_fc_cfg[i], + CONFIG_VSC9953_MAC_FC_CFG_QSGMII); + } else { + out_le32(&l2ana_reg->pfc[i].pfc_cfg, + CONFIG_VSC9953_PFC_FC); + out_le32(&l2sys_reg->pause_cfg.mac_fc_cfg[i], + CONFIG_VSC9953_MAC_FC_CFG); + } + out_le32(&l2dev_gmii_reg->port_mode.clock_cfg, + CONFIG_VSC9953_CLOCK_CFG); + out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_ena_cfg, + CONFIG_VSC9953_MAC_ENA_CFG); + out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_mode_cfg, + CONFIG_VSC9953_MAC_MODE_CFG); + out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_ifg_cfg, + CONFIG_VSC9953_MAC_IFG_CFG); + /* mac_hdx_cfg varies with port id*/ + hdx_cfg = (CONFIG_VSC9953_MAC_HDX_CFG | (i << 16)); + out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_hdx_cfg, hdx_cfg); + out_le32(&l2sys_reg->sys.front_port_mode[i], + CONFIG_VSC9953_FRONT_PORT_MODE); + out_le32(&l2qsys_reg->sys.switch_port_mode[i], + CONFIG_VSC9953_PORT_ENA); + out_le32(&l2dev_gmii_reg->mac_cfg_status.mac_maxlen_cfg, + CONFIG_VSC9953_MAC_MAX_LEN); + out_le32(&l2sys_reg->pause_cfg.pause_cfg[i], + CONFIG_VSC9953_PAUSE_CFG); + /* WAIT FOR 2 us*/ + udelay(2); + + l2dev_gmii_reg = (struct vsc9953_dev_gmii *)( + (char *)l2dev_gmii_reg + + T1040_SWITCH_GMII_DEV_OFFSET); + + /* Initialize Lynx PHY Wrappers */ + phy_addr = 0; + if (vsc9953_l2sw.port[i].enet_if == + PHY_INTERFACE_MODE_QSGMII) + phy_addr = (i + 0x4) & 0x1F; + else if (vsc9953_l2sw.port[i].enet_if == + PHY_INTERFACE_MODE_SGMII) + phy_addr = (i + 1) & 0x1F; + + if (phy_addr) { + /* SGMII IF mode + AN enable */ + vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr, + 0x14, PHY_SGMII_IF_MODE_AN | + PHY_SGMII_IF_MODE_SGMII); + /* Dev ability according to SGMII specification */ + vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr, + 0x4, PHY_SGMII_DEV_ABILITY_SGMII); + /* Adjust link timer for SGMII + * 1.6 ms in units of 8 ns = 2 * 10^5 = 0x30d40 + */ + vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr, + 0x13, 0x0003); + vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr, + 0x12, 0x0d40); + /* Restart AN */ + vsc9953_mdio_write(&l2dev_gcb->mii_mng[0], phy_addr, + 0x0, PHY_SGMII_CR_DEF_VAL | + PHY_SGMII_CR_RESET_AN); + + timeout = 50000; + while ((vsc9953_mdio_read(&l2dev_gcb->mii_mng[0], + phy_addr, 0x01) & 0x0020) && --timeout) + udelay(1); /* wait for AN to complete */ + if (timeout == 0) + debug("Timeout waiting for AN to complete\n"); + } + } + + printf("VSC9953 L2 switch initialized\n"); + return; +} + +#ifdef CONFIG_VSC9953_CMD +/* Enable/disable status of a VSC9953 port */ +static void vsc9953_port_status_set(int port_nr, u8 enabled) +{ + u32 val; + struct vsc9953_qsys_reg *l2qsys_reg; + + /* Administrative down */ + if (vsc9953_l2sw.port[port_nr].enabled == 0) + return; + + l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET + + VSC9953_QSYS_OFFSET); + + val = in_le32(&l2qsys_reg->sys.switch_port_mode[port_nr]); + if (enabled == 1) + val |= (1 << 13); + else + val &= ~(1 << 13); + + out_le32(&l2qsys_reg->sys.switch_port_mode[port_nr], val); +} + +/* Set all VSC9953 ports' status */ +static void vsc9953_port_all_status_set(u8 enabled) +{ + int i; + + for (i = 0; i < VSC9953_MAX_PORTS; i++) + vsc9953_port_status_set(i, enabled); +} + +/* Start autonegotiation for a VSC9953 PHY */ +static void vsc9953_phy_autoneg(int port_nr) +{ + if (!vsc9953_l2sw.port[port_nr].phydev) + return; + + if (vsc9953_l2sw.port[port_nr].phydev->drv->startup( + vsc9953_l2sw.port[port_nr].phydev)) + printf("Failed to start PHY for port %d\n", port_nr); +} + +/* Start autonegotiation for all VSC9953 PHYs */ +static void vsc9953_phy_all_autoneg(void) +{ + int i; + + for (i = 0; i < VSC9953_MAX_PORTS; i++) + vsc9953_phy_autoneg(i); +} + +/* Print a VSC9953 port's configuration */ +static void vsc9953_port_config_show(int port) +{ + int speed; + int duplex; + int link; + u8 enabled; + u32 val; + struct vsc9953_qsys_reg *l2qsys_reg; + + l2qsys_reg = (struct vsc9953_qsys_reg *)(VSC9953_OFFSET + + VSC9953_QSYS_OFFSET); + + val = in_le32(&l2qsys_reg->sys.switch_port_mode[port]); + enabled = vsc9953_l2sw.port[port].enabled & + ((val & 0x00002000) >> 13); + + /* internal ports (8 and 9) are fixed */ + if (VSC9953_INTERNAL_PORT_CHECK(port)) { + link = 1; + speed = SPEED_2500; + duplex = DUPLEX_FULL; + } else { + if (vsc9953_l2sw.port[port].phydev) { + link = vsc9953_l2sw.port[port].phydev->link; + speed = vsc9953_l2sw.port[port].phydev->speed; + duplex = vsc9953_l2sw.port[port].phydev->duplex; + } else { + link = -1; + speed = -1; + duplex = -1; + } + } + + printf("%8d ", port); + printf("%8s ", enabled == 1 ? "enabled" : "disabled"); + printf("%8s ", link == 1 ? "up" : "down"); + + switch (speed) { + case SPEED_10: + printf("%8d ", 10); + break; + case SPEED_100: + printf("%8d ", 100); + break; + case SPEED_1000: + printf("%8d ", 1000); + break; + case SPEED_2500: + printf("%8d ", 2500); + break; + case SPEED_10000: + printf("%8d ", 10000); + break; + default: + printf("%8s ", "-"); + } + + printf("%8s\n", duplex == DUPLEX_FULL ? "full" : "half"); +} + +/* Print VSC9953 ports' configuration */ +static void vsc9953_port_all_config_show(void) +{ + int i; + + for (i = 0; i < VSC9953_MAX_PORTS; i++) + vsc9953_port_config_show(i); +} + +/* function to interpret commands starting with "ethsw " */ +static int do_ethsw(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + u8 enable; + u32 port; + + if (argc < 4) + return -1; + + if (strcmp(argv[1], "port")) + return -1; + + if (!strcmp(argv[3], "show")) { + if (!strcmp(argv[2], "all")) { + vsc9953_phy_all_autoneg(); + printf("%8s %8s %8s %8s %8s\n", + "Port", "Status", "Link", "Speed", + "Duplex"); + vsc9953_port_all_config_show(); + return 0; + } else { + port = simple_strtoul(argv[2], NULL, 10); + if (!VSC9953_PORT_CHECK(port)) + return -1; + vsc9953_phy_autoneg(port); + printf("%8s %8s %8s %8s %8s\n", + "Port", "Status", "Link", "Speed", + "Duplex"); + vsc9953_port_config_show(port); + return 0; + } + } else if (!strcmp(argv[3], "enable")) { + enable = 1; + } else if (!strcmp(argv[3], "disable")) { + enable = 0; + } else { + return -1; + } + + if (!strcmp(argv[2], "all")) { + vsc9953_port_all_status_set(enable); + return 0; + } else { + port = simple_strtoul(argv[2], NULL, 10); + if (!VSC9953_PORT_CHECK(port)) + return -1; + vsc9953_port_status_set(port, enable); + return 0; + } + + return -1; +} + +U_BOOT_CMD(ethsw, 5, 0, do_ethsw, + "vsc9953 l2 switch commands", + "port enable|disable\n" + " - enable/disable an l2 switch port\n" + " port_nr=0..9; use \"all\" for all ports\n" + "ethsw port show\n" + " - show an l2 switch port's configuration\n" + " port_nr=0..9; use \"all\" for all ports\n" +); +#endif /* CONFIG_VSC9953_CMD */ -- cgit v1.1