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u-boot/drivers/net/vsc9953.c
Codrin Ciubotariu 6706b115a6 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>
2015-01-16 09:32:38 -08:00

498 lines
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/*
* 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 */
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