+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2012 Freescale Semiconductor, Inc.
* Andy Fleming <afleming@gmail.com>
* Roy Zang <tie-fei.zang@freescale.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
* Some part is taken from tsec.c
*/
#include <common.h>
#include <miiphy.h>
#include <phy.h>
#include <asm/io.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
#include <fm_eth.h>
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+#define memac_out_32(a, v) out_le32(a, v)
+#define memac_clrbits_32(a, v) clrbits_le32(a, v)
+#define memac_setbits_32(a, v) setbits_le32(a, v)
+#else
+#define memac_out_32(a, v) out_be32(a, v)
+#define memac_clrbits_32(a, v) clrbits_be32(a, v)
+#define memac_setbits_32(a, v) setbits_be32(a, v)
+#endif
+
+#ifdef CONFIG_DM_ETH
+struct fm_mdio_priv {
+ struct memac_mdio_controller *regs;
+};
+#endif
+
+static u32 memac_in_32(u32 *reg)
+{
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+ return in_le32(reg);
+#else
+ return in_be32(reg);
+#endif
+}
+
/*
* Write value to the PHY for this device to the register at regnum, waiting
* until the write is done before it returns. All PHY configuration has to be
int memac_mdio_write(struct mii_dev *bus, int port_addr, int dev_addr,
int regnum, u16 value)
{
+ struct memac_mdio_controller *regs;
u32 mdio_ctl;
- struct memac_mdio_controller *regs = bus->priv;
u32 c45 = 1; /* Default to 10G interface */
+#ifndef CONFIG_DM_ETH
+ regs = bus->priv;
+#else
+ struct fm_mdio_priv *priv;
+
+ if (!bus->priv)
+ return -EINVAL;
+ priv = dev_get_priv(bus->priv);
+ regs = priv->regs;
+ debug("memac_mdio_write(regs %p, port %d, dev %d, reg %d, val %#x)\n",
+ regs, port_addr, dev_addr, regnum, value);
+#endif
+
if (dev_addr == MDIO_DEVAD_NONE) {
c45 = 0; /* clause 22 */
dev_addr = regnum & 0x1f;
- clrbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
+ memac_clrbits_32(®s->mdio_stat, MDIO_STAT_ENC);
} else
- setbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
+ memac_setbits_32(®s->mdio_stat, MDIO_STAT_ENC);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Set the port and dev addr */
mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Set the register address */
if (c45)
- out_be32(®s->mdio_addr, regnum & 0xffff);
+ memac_out_32(®s->mdio_addr, regnum & 0xffff);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Write the value to the register */
- out_be32(®s->mdio_data, MDIO_DATA(value));
+ memac_out_32(®s->mdio_data, MDIO_DATA(value));
/* Wait till the MDIO write is complete */
- while ((in_be32(®s->mdio_data)) & MDIO_DATA_BSY)
+ while ((memac_in_32(®s->mdio_data)) & MDIO_DATA_BSY)
;
return 0;
int memac_mdio_read(struct mii_dev *bus, int port_addr, int dev_addr,
int regnum)
{
+ struct memac_mdio_controller *regs;
u32 mdio_ctl;
- struct memac_mdio_controller *regs = bus->priv;
u32 c45 = 1;
+#ifndef CONFIG_DM_ETH
+ regs = bus->priv;
+#else
+ struct fm_mdio_priv *priv;
+
+ if (!bus->priv)
+ return -EINVAL;
+ priv = dev_get_priv(bus->priv);
+ regs = priv->regs;
+#endif
+
if (dev_addr == MDIO_DEVAD_NONE) {
+#ifndef CONFIG_DM_ETH
+ if (!strcmp(bus->name, DEFAULT_FM_TGEC_MDIO_NAME))
+ return 0xffff;
+#endif
c45 = 0; /* clause 22 */
dev_addr = regnum & 0x1f;
- clrbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
+ memac_clrbits_32(®s->mdio_stat, MDIO_STAT_ENC);
} else
- setbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
+ memac_setbits_32(®s->mdio_stat, MDIO_STAT_ENC);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Set the Port and Device Addrs */
mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Set the register address */
if (c45)
- out_be32(®s->mdio_addr, regnum & 0xffff);
+ memac_out_32(®s->mdio_addr, regnum & 0xffff);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Initiate the read */
mdio_ctl |= MDIO_CTL_READ;
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Wait till the MDIO write is complete */
- while ((in_be32(®s->mdio_data)) & MDIO_DATA_BSY)
+ while ((memac_in_32(®s->mdio_data)) & MDIO_DATA_BSY)
;
/* Return all Fs if nothing was there */
- if (in_be32(®s->mdio_stat) & MDIO_STAT_RD_ER)
+ if (memac_in_32(®s->mdio_stat) & MDIO_STAT_RD_ER)
return 0xffff;
- return in_be32(®s->mdio_data) & 0xffff;
+ return memac_in_32(®s->mdio_data) & 0xffff;
}
int memac_mdio_reset(struct mii_dev *bus)
return 0;
}
+#ifndef CONFIG_DM_ETH
int fm_memac_mdio_init(bd_t *bis, struct memac_mdio_info *info)
{
struct mii_dev *bus = mdio_alloc();
bus->read = memac_mdio_read;
bus->write = memac_mdio_write;
bus->reset = memac_mdio_reset;
- sprintf(bus->name, info->name);
+ strcpy(bus->name, info->name);
bus->priv = info->regs;
* is zero, so MDIO clock is disabled.
* So, for proper functioning of MDIO, MDIO_CLK_DIV bits needs to
* be properly initialized.
+ * NEG bit default should be '1' as per FMAN-v3 RM, but on platform
+ * like T2080QDS, this bit default is '0', which leads to MDIO failure
+ * on XAUI PHY, so set this bit definitely.
*/
- setbits_be32(&((struct memac_mdio_controller *)info->regs)->mdio_stat,
- MDIO_STAT_CLKDIV(258));
+ memac_setbits_32(
+ &((struct memac_mdio_controller *)info->regs)->mdio_stat,
+ MDIO_STAT_CLKDIV(258) | MDIO_STAT_NEG);
return mdio_register(bus);
}
+
+#else /* CONFIG_DM_ETH */
+#if defined(CONFIG_PHYLIB) && defined(CONFIG_DM_MDIO)
+static int fm_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 memac_mdio_read(pdata->mii_bus, addr, devad, reg);
+
+ return -1;
+}
+
+static int fm_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 memac_mdio_write(pdata->mii_bus, addr, devad, reg, val);
+
+ return -1;
+}
+
+static int fm_mdio_reset(struct udevice *dev)
+{
+ struct mdio_perdev_priv *pdata = (dev) ? dev_get_uclass_priv(dev) :
+ NULL;
+
+ if (pdata && pdata->mii_bus)
+ return memac_mdio_reset(pdata->mii_bus);
+
+ return -1;
+}
+
+static const struct mdio_ops fm_mdio_ops = {
+ .read = fm_mdio_read,
+ .write = fm_mdio_write,
+ .reset = fm_mdio_reset,
+};
+
+static const struct udevice_id fm_mdio_ids[] = {
+ { .compatible = "fsl,fman-memac-mdio" },
+ {}
+};
+
+static int fm_mdio_probe(struct udevice *dev)
+{
+ struct fm_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;
+ }
+ priv->regs = (void *)(uintptr_t)dev_read_addr(dev);
+ debug("%s priv %p @ regs %p, pdata %p\n", __func__,
+ priv, priv->regs, pdata);
+
+ /*
+ * On some platforms like B4860, default value of MDIO_CLK_DIV bits
+ * in mdio_stat(mdio_cfg) register generates MDIO clock too high
+ * (much higher than 2.5MHz), violating the IEEE specs.
+ * On other platforms like T1040, default value of MDIO_CLK_DIV bits
+ * is zero, so MDIO clock is disabled.
+ * So, for proper functioning of MDIO, MDIO_CLK_DIV bits needs to
+ * be properly initialized.
+ * The default NEG bit should be '1' as per FMANv3 RM, but on platforms
+ * like T2080QDS, this bit default is '0', which leads to MDIO failure
+ * on XAUI PHY, so set this bit definitely.
+ */
+ if (priv && priv->regs && priv->regs->mdio_stat)
+ memac_setbits_32(&priv->regs->mdio_stat,
+ MDIO_STAT_CLKDIV(258) | MDIO_STAT_NEG);
+
+ return 0;
+}
+
+static int fm_mdio_remove(struct udevice *dev)
+{
+ return 0;
+}
+
+U_BOOT_DRIVER(fman_mdio) = {
+ .name = "fman_mdio",
+ .id = UCLASS_MDIO,
+ .of_match = fm_mdio_ids,
+ .probe = fm_mdio_probe,
+ .remove = fm_mdio_remove,
+ .ops = &fm_mdio_ops,
+ .priv_auto_alloc_size = sizeof(struct fm_mdio_priv),
+ .platdata_auto_alloc_size = sizeof(struct mdio_perdev_priv),
+};
+#endif /* CONFIG_PHYLIB && CONFIG_DM_MDIO */
+#endif /* CONFIG_DM_ETH */
projects / platform / kernel / u-boot.git / blobdiff