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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2009-2010, 2013 Freescale Semiconductor, Inc.
* Jun-jie Zhang <b18070@freescale.com>
* Mingkai Hu <Mingkai.hu@freescale.com>
*/
#include <common.h>
#include <miiphy.h>
#include <phy.h>
#include <fsl_mdio.h>
#include <asm/io.h>
#include <linux/errno.h>
#include <tsec.h>
#ifdef CONFIG_DM_MDIO
struct tsec_mdio_priv {
struct tsec_mii_mng __iomem *regs;
};
#endif
void tsec_local_mdio_write(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum, int value)
{
int timeout = 1000000;
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
out_be32(&phyregs->miimcon, value);
/* Memory barrier */
mb();
while ((in_be32(&phyregs->miimind) & MIIMIND_BUSY) && timeout--)
;
}
int tsec_local_mdio_read(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum)
{
int value;
int timeout = 1000000;
/* Put the address of the phy, and the register number into MIIMADD */
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
/* Clear the command register, and wait */
out_be32(&phyregs->miimcom, 0);
/* Memory barrier */
mb();
/* Initiate a read command, and wait */
out_be32(&phyregs->miimcom, MIIMCOM_READ_CYCLE);
/* Memory barrier */
mb();
/* Wait for the the indication that the read is done */
while ((in_be32(&phyregs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY))
&& timeout--)
;
/* Grab the value read from the PHY */
value = in_be32(&phyregs->miimstat);
return value;
}
#if defined(CONFIG_PHYLIB)
static int fsl_pq_mdio_reset(struct mii_dev *bus)
{
struct tsec_mii_mng __iomem *regs;
#ifndef CONFIG_DM_MDIO
regs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
regs = priv->regs;
#endif
/* Reset MII (due to new addresses) */
out_be32(®s->miimcfg, MIIMCFG_RESET_MGMT);
out_be32(®s->miimcfg, MIIMCFG_INIT_VALUE);
while (in_be32(®s->miimind) & MIIMIND_BUSY)
;
return 0;
}
#endif
int tsec_phy_read(struct mii_dev *bus, int addr, int dev_addr, int regnum)
{
struct tsec_mii_mng __iomem *phyregs;
#ifndef CONFIG_DM_MDIO
phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
phyregs = priv->regs;
#endif
return tsec_local_mdio_read(phyregs, addr, dev_addr, regnum);
}
int tsec_phy_write(struct mii_dev *bus, int addr, int dev_addr, int regnum,
u16 value)
{
struct tsec_mii_mng __iomem *phyregs;
#ifndef CONFIG_DM_MDIO
phyregs = (struct tsec_mii_mng __iomem *)bus->priv;
#else
struct tsec_mdio_priv *priv;
if (!bus->priv)
return -EINVAL;
priv = dev_get_priv(bus->priv);
phyregs = priv->regs;
#endif
tsec_local_mdio_write(phyregs, addr, dev_addr, regnum, value);
return 0;
}
#ifndef CONFIG_DM_MDIO
int fsl_pq_mdio_init(struct bd_info *bis, struct fsl_pq_mdio_info *info)
{
struct mii_dev *bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate FSL MDIO bus\n");
return -1;
}
bus->read = tsec_phy_read;
bus->write = tsec_phy_write;
bus->reset = fsl_pq_mdio_reset;
strcpy(bus->name, info->name);
bus->priv = (void *)info->regs;
return mdio_register(bus);
}
#else /* CONFIG_DM_MDIO */
#if defined(CONFIG_PHYLIB)
static int tsec_mdio_read(struct udevice *dev, int addr, int devad, int reg)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return tsec_phy_read(pdata->mii_bus, addr, devad, reg);
return -1;
}
static int tsec_mdio_write(struct udevice *dev, int addr, int devad, int reg,
u16 val)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return tsec_phy_write(pdata->mii_bus, addr, devad, reg, val);
return -1;
}
static int tsec_mdio_reset(struct udevice *dev)
{
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (pdata && pdata->mii_bus)
return fsl_pq_mdio_reset(pdata->mii_bus);
return -1;
}
static const struct mdio_ops tsec_mdio_ops = {
.read = tsec_mdio_read,
.write = tsec_mdio_write,
.reset = tsec_mdio_reset,
};
static struct fsl_pq_mdio_data etsec2_data = {
.mdio_regs_off = TSEC_MDIO_REGS_OFFSET,
};
static struct fsl_pq_mdio_data gianfar_data = {
.mdio_regs_off = 0x0,
};
static struct fsl_pq_mdio_data fman_data = {
.mdio_regs_off = 0x0,
};
static const struct udevice_id tsec_mdio_ids[] = {
{ .compatible = "fsl,gianfar-tbi", .data = (ulong)&gianfar_data },
{ .compatible = "fsl,gianfar-mdio", .data = (ulong)&gianfar_data },
{ .compatible = "fsl,etsec2-tbi", .data = (ulong)&etsec2_data },
{ .compatible = "fsl,etsec2-mdio", .data = (ulong)&etsec2_data },
{ .compatible = "fsl,fman-mdio", .data = (ulong)&fman_data },
{}
};
static int tsec_mdio_probe(struct udevice *dev)
{
struct fsl_pq_mdio_data *data;
struct tsec_mdio_priv *priv = (dev) ? dev_get_priv(dev) : NULL;
struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
NULL;
if (!dev) {
printf("%s dev = NULL\n", __func__);
return -1;
}
if (!priv) {
printf("dev_get_priv(dev %p) = NULL\n", dev);
return -1;
}
data = (struct fsl_pq_mdio_data *)dev_get_driver_data(dev);
priv->regs = dev_remap_addr(dev) + data->mdio_regs_off;
debug("%s priv %p @ regs %p, pdata %p\n", __func__,
priv, priv->regs, pdata);
return 0;
}
static int tsec_mdio_remove(struct udevice *dev)
{
return 0;
}
U_BOOT_DRIVER(tsec_mdio) = {
.name = "tsec_mdio",
.id = UCLASS_MDIO,
.of_match = tsec_mdio_ids,
.probe = tsec_mdio_probe,
.remove = tsec_mdio_remove,
.ops = &tsec_mdio_ops,
.priv_auto = sizeof(struct tsec_mdio_priv),
.plat_auto = sizeof(struct mdio_perdev_priv),
};
#endif /* CONFIG_PHYLIB */
#endif /* CONFIG_DM_MDIO */
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