* SPDX-License-Identifier: GPL-2.0+
*/
+#include <clk.h>
#include <common.h>
#include <dm.h>
#include <net.h>
#include <asm/io.h>
#include <phy.h>
#include <miiphy.h>
+#include <wait_bit.h>
#include <watchdog.h>
#include <asm/system.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sys_proto.h>
-#include <asm-generic/errno.h>
+#include <linux/errno.h>
DECLARE_GLOBAL_DATA_PTR;
-#if !defined(CONFIG_PHYLIB)
-# error XILINX_GEM_ETHERNET requires PHYLIB
-#endif
-
/* Bit/mask specification */
#define ZYNQ_GEM_PHYMNTNC_OP_MASK 0x40020000 /* operation mask bits */
#define ZYNQ_GEM_PHYMNTNC_OP_R_MASK 0x20000000 /* read operation */
#define ZYNQ_GEM_NWCTRL_MDEN_MASK 0x00000010 /* Enable MDIO port */
#define ZYNQ_GEM_NWCTRL_STARTTX_MASK 0x00000200 /* Start tx (tx_go) */
-#define ZYNQ_GEM_NWCFG_SPEED100 0x000000001 /* 100 Mbps operation */
-#define ZYNQ_GEM_NWCFG_SPEED1000 0x000000400 /* 1Gbps operation */
-#define ZYNQ_GEM_NWCFG_FDEN 0x000000002 /* Full Duplex mode */
-#define ZYNQ_GEM_NWCFG_FSREM 0x000020000 /* FCS removal */
-#define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x0000c0000 /* Div pclk by 48, max 120MHz */
+#define ZYNQ_GEM_NWCFG_SPEED100 0x00000001 /* 100 Mbps operation */
+#define ZYNQ_GEM_NWCFG_SPEED1000 0x00000400 /* 1Gbps operation */
+#define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */
+#define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */
+#define ZYNQ_GEM_NWCFG_SGMII_ENBL 0x08000000 /* SGMII Enable */
+#define ZYNQ_GEM_NWCFG_PCS_SEL 0x00000800 /* PCS select */
+#ifdef CONFIG_ARM64
+#define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x00100000 /* Div pclk by 64, max 160MHz */
+#else
+#define ZYNQ_GEM_NWCFG_MDCCLKDIV 0x000c0000 /* Div pclk by 48, max 120MHz */
+#endif
#ifdef CONFIG_ARM64
# define ZYNQ_GEM_DBUS_WIDTH (1 << 21) /* 64 bit bus */
#define ZYNQ_GEM_TSR_DONE 0x00000020 /* Tx done mask */
+#define ZYNQ_GEM_PCS_CTL_ANEG_ENBL 0x1000
+
/* Use MII register 1 (MII status register) to detect PHY */
#define PHY_DETECT_REG 1
u32 reserved6[18];
#define STAT_SIZE 44
u32 stat[STAT_SIZE]; /* 0x100 - Octects transmitted Low reg */
- u32 reserved7[164];
+ u32 reserved9[20];
+ u32 pcscntrl;
+ u32 reserved7[143];
u32 transmit_q1_ptr; /* 0x440 - Transmit priority queue 1 */
u32 reserved8[15];
u32 receive_q1_ptr; /* 0x480 - Receive priority queue 1 */
struct zynq_gem_regs *iobase;
phy_interface_t interface;
struct phy_device *phydev;
+ int phy_of_handle;
struct mii_dev *bus;
+#ifdef CONFIG_CLK_ZYNQMP
+ struct clk clk;
+#endif
};
-static inline int mdio_wait(struct zynq_gem_regs *regs)
-{
- u32 timeout = 20000;
-
- /* Wait till MDIO interface is ready to accept a new transaction. */
- while (--timeout) {
- if (readl(®s->nwsr) & ZYNQ_GEM_NWSR_MDIOIDLE_MASK)
- break;
- WATCHDOG_RESET();
- }
-
- if (!timeout) {
- printf("%s: Timeout\n", __func__);
- return 1;
- }
-
- return 0;
-}
-
static u32 phy_setup_op(struct zynq_gem_priv *priv, u32 phy_addr, u32 regnum,
u32 op, u16 *data)
{
u32 mgtcr;
struct zynq_gem_regs *regs = priv->iobase;
+ int err;
- if (mdio_wait(regs))
- return 1;
+ err = wait_for_bit(__func__, ®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
+ true, 20000, true);
+ if (err)
+ return err;
/* Construct mgtcr mask for the operation */
mgtcr = ZYNQ_GEM_PHYMNTNC_OP_MASK | op |
/* Write mgtcr and wait for completion */
writel(mgtcr, ®s->phymntnc);
- if (mdio_wait(regs))
- return 1;
+ err = wait_for_bit(__func__, ®s->nwsr, ZYNQ_GEM_NWSR_MDIOIDLE_MASK,
+ true, 20000, true);
+ if (err)
+ return err;
if (op == ZYNQ_GEM_PHYMNTNC_OP_R_MASK)
*data = readl(®s->phymntnc);
/* Enable only MDIO bus */
writel(ZYNQ_GEM_NWCTRL_MDEN_MASK, ®s->nwctrl);
- ret = phy_detection(dev);
- if (ret) {
- printf("GEM PHY init failed\n");
- return ret;
+ if (priv->interface != PHY_INTERFACE_MODE_SGMII) {
+ ret = phy_detection(dev);
+ if (ret) {
+ printf("GEM PHY init failed\n");
+ return ret;
+ }
}
priv->phydev = phy_connect(priv->bus, priv->phyaddr, dev,
priv->phydev->supported = supported | ADVERTISED_Pause |
ADVERTISED_Asym_Pause;
priv->phydev->advertising = priv->phydev->supported;
- phy_config(priv->phydev);
- return 0;
+ if (priv->phy_of_handle > 0)
+ dev_set_of_offset(priv->phydev->dev, priv->phy_of_handle);
+
+ return phy_config(priv->phydev);
}
static int zynq_gem_init(struct udevice *dev)
{
- u32 i;
+ u32 i, nwconfig;
+ int ret;
unsigned long clk_rate = 0;
struct zynq_gem_priv *priv = dev_get_priv(dev);
struct zynq_gem_regs *regs = priv->iobase;
priv->init++;
}
- phy_startup(priv->phydev);
+ ret = phy_startup(priv->phydev);
+ if (ret)
+ return ret;
if (!priv->phydev->link) {
printf("%s: No link.\n", priv->phydev->dev->name);
return -1;
}
+ nwconfig = ZYNQ_GEM_NWCFG_INIT;
+
+ if (priv->interface == PHY_INTERFACE_MODE_SGMII) {
+ nwconfig |= ZYNQ_GEM_NWCFG_SGMII_ENBL |
+ ZYNQ_GEM_NWCFG_PCS_SEL;
+#ifdef CONFIG_ARM64
+ writel(readl(®s->pcscntrl) | ZYNQ_GEM_PCS_CTL_ANEG_ENBL,
+ ®s->pcscntrl);
+#endif
+ }
+
switch (priv->phydev->speed) {
case SPEED_1000:
- writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED1000,
+ writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED1000,
®s->nwcfg);
clk_rate = ZYNQ_GEM_FREQUENCY_1000;
break;
case SPEED_100:
- writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED100,
+ writel(nwconfig | ZYNQ_GEM_NWCFG_SPEED100,
®s->nwcfg);
clk_rate = ZYNQ_GEM_FREQUENCY_100;
break;
/* Change the rclk and clk only not using EMIO interface */
if (!priv->emio)
+#ifndef CONFIG_CLK_ZYNQMP
zynq_slcr_gem_clk_setup((ulong)priv->iobase !=
ZYNQ_GEM_BASEADDR0, clk_rate);
+#else
+ ret = clk_set_rate(&priv->clk, clk_rate);
+ if (IS_ERR_VALUE(ret))
+ return -1;
+#endif
setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
ZYNQ_GEM_NWCTRL_TXEN_MASK);
return 0;
}
-static int wait_for_bit(const char *func, u32 *reg, const u32 mask,
- bool set, unsigned int timeout)
-{
- u32 val;
- unsigned long start = get_timer(0);
-
- while (1) {
- val = readl(reg);
-
- if (!set)
- val = ~val;
-
- if ((val & mask) == mask)
- return 0;
-
- if (get_timer(start) > timeout)
- break;
-
- if (ctrlc()) {
- puts("Abort\n");
- return -EINTR;
- }
-
- udelay(1);
- }
-
- debug("%s: Timeout (reg=%p mask=%08x wait_set=%i)\n",
- func, reg, mask, set);
-
- return -ETIMEDOUT;
-}
-
static int zynq_gem_send(struct udevice *dev, void *ptr, int len)
{
u32 addr, size;
printf("TX buffers exhausted in mid frame\n");
return wait_for_bit(__func__, ®s->txsr, ZYNQ_GEM_TSR_DONE,
- true, 20000);
+ true, 20000, true);
}
/* Do not check frame_recd flag in rx_status register 0x20 - just poll BD */
ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
}
+__weak int zynq_board_read_rom_ethaddr(unsigned char *ethaddr)
+{
+ return -ENOSYS;
+}
+
+static int zynq_gem_read_rom_mac(struct udevice *dev)
+{
+ int retval;
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+
+ retval = zynq_board_read_rom_ethaddr(pdata->enetaddr);
+ if (retval == -ENOSYS)
+ retval = 0;
+
+ return retval;
+}
+
static int zynq_gem_miiphy_read(struct mii_dev *bus, int addr,
int devad, int reg)
{
priv->tx_bd = (struct emac_bd *)bd_space;
priv->rx_bd = (struct emac_bd *)((ulong)bd_space + BD_SEPRN_SPACE);
+#ifdef CONFIG_CLK_ZYNQMP
+ ret = clk_get_by_name(dev, "tx_clk", &priv->clk);
+ if (ret < 0) {
+ dev_err(dev, "failed to get clock\n");
+ return -EINVAL;
+ }
+#endif
+
priv->bus = mdio_alloc();
priv->bus->read = zynq_gem_miiphy_read;
priv->bus->write = zynq_gem_miiphy_write;
priv->bus->priv = priv;
- strcpy(priv->bus->name, "gem");
- ret = mdio_register(priv->bus);
+ ret = mdio_register_seq(priv->bus, dev->seq);
if (ret)
return ret;
- zynq_phy_init(dev);
-
- return 0;
+ return zynq_phy_init(dev);
}
static int zynq_gem_remove(struct udevice *dev)
.free_pkt = zynq_gem_free_pkt,
.stop = zynq_gem_halt,
.write_hwaddr = zynq_gem_setup_mac,
+ .read_rom_hwaddr = zynq_gem_read_rom_mac,
};
static int zynq_gem_ofdata_to_platdata(struct udevice *dev)
{
struct eth_pdata *pdata = dev_get_platdata(dev);
struct zynq_gem_priv *priv = dev_get_priv(dev);
- int offset = 0;
+ int node = dev_of_offset(dev);
const char *phy_mode;
pdata->iobase = (phys_addr_t)dev_get_addr(dev);
priv->emio = 0;
priv->phyaddr = -1;
- offset = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset,
- "phy-handle");
- if (offset > 0)
- priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1);
+ priv->phy_of_handle = fdtdec_lookup_phandle(gd->fdt_blob, node,
+ "phy-handle");
+ if (priv->phy_of_handle > 0)
+ priv->phyaddr = fdtdec_get_int(gd->fdt_blob,
+ priv->phy_of_handle, "reg", -1);
- phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL);
+ phy_mode = fdt_getprop(gd->fdt_blob, node, "phy-mode", NULL);
if (phy_mode)
pdata->phy_interface = phy_get_interface_by_name(phy_mode);
if (pdata->phy_interface == -1) {
}
priv->interface = pdata->phy_interface;
- printf("ZYNQ GEM: %lx, phyaddr %d, interface %s\n", (ulong)priv->iobase,
+ priv->emio = fdtdec_get_bool(gd->fdt_blob, node, "xlnx,emio");
+
+ printf("ZYNQ GEM: %lx, phyaddr %x, interface %s\n", (ulong)priv->iobase,
priv->phyaddr, phy_string_for_interface(priv->interface));
return 0;