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 <port_nr> enable|disable - enable/disable an l2 switch port
ethsw port <port_nr> 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 <codrin.ciubotariu@freescale.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: York Sun <yorksun@freescale.com>
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 <asm/io.h>
+#include <asm/fsl_serdes.h>
+#include <fm_eth.h>
+#include <asm/fsl_memac.h>
+#include <vsc9953.h>
+
+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 <port_nr> enable|disable\n"
+ " - enable/disable an l2 switch port\n"
+ " port_nr=0..9; use \"all\" for all ports\n"
+ "ethsw port <port_nr> show\n"
+ " - show an l2 switch port's configuration\n"
+ " port_nr=0..9; use \"all\" for all ports\n"
+);
+#endif /* CONFIG_VSC9953_CMD */