* Based on Xilinx gmac driver:
* (C) Copyright 2011 Xilinx
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <phy.h>
#include <miiphy.h>
#include <watchdog.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
#if !defined(CONFIG_PHYLIB)
# error XILINX_GEM_ETHERNET requires PHYLIB
#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_SPEED 0x00000001 /* 100 Mbps operation */
-#define ZYNQ_GEM_NWCFG_FDEN 0x00000002 /* Full Duplex mode */
-#define ZYNQ_GEM_NWCFG_FSREM 0x00020000 /* FCS removal */
+#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 0x000080000 /* Div pclk by 32, 80MHz */
+#define ZYNQ_GEM_NWCFG_MDCCLKDIV2 0x0000c0000 /* Div pclk by 48, 120MHz */
-#define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_NWCFG_SPEED | \
- ZYNQ_GEM_NWCFG_FDEN | \
+#define ZYNQ_GEM_NWCFG_INIT (ZYNQ_GEM_NWCFG_FDEN | \
ZYNQ_GEM_NWCFG_FSREM | \
ZYNQ_GEM_NWCFG_MDCCLKDIV)
ZYNQ_GEM_DMACR_TXSIZE | \
ZYNQ_GEM_DMACR_RXBUF)
+/* Use MII register 1 (MII status register) to detect PHY */
+#define PHY_DETECT_REG 1
+
+/* Mask used to verify certain PHY features (or register contents)
+ * in the register above:
+ * 0x1000: 10Mbps full duplex support
+ * 0x0800: 10Mbps half duplex support
+ * 0x0008: Auto-negotiation support
+ */
+#define PHY_DETECT_MASK 0x1808
+
/* Device registers */
struct zynq_gem_regs {
u32 nwctrl; /* Network Control reg */
u32 rxbd_current;
u32 rx_first_buf;
int phyaddr;
+ u32 emio;
+ int init;
struct phy_device *phydev;
struct mii_dev *bus;
};
ZYNQ_GEM_PHYMNTNC_OP_W_MASK, &data);
}
+static void phy_detection(struct eth_device *dev)
+{
+ int i;
+ u16 phyreg;
+ struct zynq_gem_priv *priv = dev->priv;
+
+ if (priv->phyaddr != -1) {
+ phyread(dev, priv->phyaddr, PHY_DETECT_REG, &phyreg);
+ if ((phyreg != 0xFFFF) &&
+ ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
+ /* Found a valid PHY address */
+ debug("Default phy address %d is valid\n",
+ priv->phyaddr);
+ return;
+ } else {
+ debug("PHY address is not setup correctly %d\n",
+ priv->phyaddr);
+ priv->phyaddr = -1;
+ }
+ }
+
+ debug("detecting phy address\n");
+ if (priv->phyaddr == -1) {
+ /* detect the PHY address */
+ for (i = 31; i >= 0; i--) {
+ phyread(dev, i, PHY_DETECT_REG, &phyreg);
+ if ((phyreg != 0xFFFF) &&
+ ((phyreg & PHY_DETECT_MASK) == PHY_DETECT_MASK)) {
+ /* Found a valid PHY address */
+ priv->phyaddr = i;
+ debug("Found valid phy address, %d\n", i);
+ return;
+ }
+ }
+ }
+ printf("PHY is not detected\n");
+}
+
static int zynq_gem_setup_mac(struct eth_device *dev)
{
u32 i, macaddrlow, macaddrhigh;
static int zynq_gem_init(struct eth_device *dev, bd_t * bis)
{
- u32 i;
+ u32 i, rclk, clk = 0;
struct phy_device *phydev;
const u32 stat_size = (sizeof(struct zynq_gem_regs) -
offsetof(struct zynq_gem_regs, stat)) / 4;
SUPPORTED_1000baseT_Half |
SUPPORTED_1000baseT_Full;
- /* Disable all interrupts */
- writel(0xFFFFFFFF, ®s->idr);
-
- /* Disable the receiver & transmitter */
- writel(0, ®s->nwctrl);
- writel(0, ®s->txsr);
- writel(0, ®s->rxsr);
- writel(0, ®s->phymntnc);
-
- /* Clear the Hash registers for the mac address pointed by AddressPtr */
- writel(0x0, ®s->hashl);
- /* Write bits [63:32] in TOP */
- writel(0x0, ®s->hashh);
+ if (!priv->init) {
+ /* Disable all interrupts */
+ writel(0xFFFFFFFF, ®s->idr);
+
+ /* Disable the receiver & transmitter */
+ writel(0, ®s->nwctrl);
+ writel(0, ®s->txsr);
+ writel(0, ®s->rxsr);
+ writel(0, ®s->phymntnc);
+
+ /* Clear the Hash registers for the mac address
+ * pointed by AddressPtr
+ */
+ writel(0x0, ®s->hashl);
+ /* Write bits [63:32] in TOP */
+ writel(0x0, ®s->hashh);
+
+ /* Clear all counters */
+ for (i = 0; i <= stat_size; i++)
+ readl(®s->stat[i]);
+
+ /* Setup RxBD space */
+ memset(&(priv->rx_bd), 0, sizeof(priv->rx_bd));
+ /* Create the RxBD ring */
+ memset(&(priv->rxbuffers), 0, sizeof(priv->rxbuffers));
+
+ for (i = 0; i < RX_BUF; i++) {
+ priv->rx_bd[i].status = 0xF0000000;
+ priv->rx_bd[i].addr =
+ (u32)((char *)&(priv->rxbuffers) +
+ (i * PKTSIZE_ALIGN));
+ }
+ /* WRAP bit to last BD */
+ priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
+ /* Write RxBDs to IP */
+ writel((u32)&(priv->rx_bd), ®s->rxqbase);
- /* Clear all counters */
- for (i = 0; i <= stat_size; i++)
- readl(®s->stat[i]);
+ /* Setup for DMA Configuration register */
+ writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
- /* Setup RxBD space */
- memset(&(priv->rx_bd), 0, sizeof(priv->rx_bd));
- /* Create the RxBD ring */
- memset(&(priv->rxbuffers), 0, sizeof(priv->rxbuffers));
+ /* Setup for Network Control register, MDIO, Rx and Tx enable */
+ setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK);
- for (i = 0; i < RX_BUF; i++) {
- priv->rx_bd[i].status = 0xF0000000;
- priv->rx_bd[i].addr = (u32)((char *) &(priv->rxbuffers) +
- (i * PKTSIZE_ALIGN));
+ priv->init++;
}
- /* WRAP bit to last BD */
- priv->rx_bd[--i].addr |= ZYNQ_GEM_RXBUF_WRAP_MASK;
- /* Write RxBDs to IP */
- writel((u32) &(priv->rx_bd), ®s->rxqbase);
-
- /* MAC Setup */
- /* Setup Network Configuration register */
- writel(ZYNQ_GEM_NWCFG_INIT, ®s->nwcfg);
-
- /* Setup for DMA Configuration register */
- writel(ZYNQ_GEM_DMACR_INIT, ®s->dmacr);
- /* Setup for Network Control register, MDIO, Rx and Tx enable */
- setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_MDEN_MASK |
- ZYNQ_GEM_NWCTRL_RXEN_MASK | ZYNQ_GEM_NWCTRL_TXEN_MASK);
+ phy_detection(dev);
/* interface - look at tsec */
phydev = phy_connect(priv->bus, priv->phyaddr, dev, 0);
- phydev->supported &= supported;
+ phydev->supported = supported | ADVERTISED_Pause |
+ ADVERTISED_Asym_Pause;
phydev->advertising = phydev->supported;
priv->phydev = phydev;
phy_config(phydev);
phy_startup(phydev);
+ switch (phydev->speed) {
+ case SPEED_1000:
+ writel(ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED1000,
+ ®s->nwcfg);
+ rclk = (0 << 4) | (1 << 0);
+ clk = (1 << 20) | (8 << 8) | (0 << 4) | (1 << 0);
+ break;
+ case SPEED_100:
+ clrsetbits_le32(®s->nwcfg, ZYNQ_GEM_NWCFG_SPEED1000,
+ ZYNQ_GEM_NWCFG_INIT | ZYNQ_GEM_NWCFG_SPEED100);
+ rclk = 1 << 0;
+ clk = (5 << 20) | (8 << 8) | (0 << 4) | (1 << 0);
+ break;
+ case SPEED_10:
+ rclk = 1 << 0;
+ /* FIXME untested */
+ clk = (5 << 20) | (8 << 8) | (0 << 4) | (1 << 0);
+ break;
+ }
+
+ /* Change the rclk and clk only not using EMIO interface */
+ if (!priv->emio)
+ zynq_slcr_gem_clk_setup(dev->iobase !=
+ ZYNQ_GEM_BASEADDR0, rclk, clk);
+
+ setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
+ ZYNQ_GEM_NWCTRL_TXEN_MASK);
+
return 0;
}
writel((u32)&(priv->tx_bd), ®s->txqbase);
/* Setup Tx BD */
- memset((void *) &(priv->tx_bd), 0, sizeof(struct emac_bd));
+ memset((void *)&(priv->tx_bd), 0, sizeof(struct emac_bd));
priv->tx_bd.addr = (u32)ptr;
- priv->tx_bd.status = len | ZYNQ_GEM_TXBUF_LAST_MASK |
- ZYNQ_GEM_TXBUF_WRAP_MASK;
+ priv->tx_bd.status = len | ZYNQ_GEM_TXBUF_LAST_MASK;
/* Start transmit */
setbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_STARTTX_MASK);
if ((++priv->rxbd_current) >= RX_BUF)
priv->rxbd_current = 0;
-
- return frame_len;
}
- return 0;
+ return frame_len;
}
static void zynq_gem_halt(struct eth_device *dev)
{
struct zynq_gem_regs *regs = (struct zynq_gem_regs *)dev->iobase;
- /* Disable the receiver & transmitter */
- writel(0, ®s->nwctrl);
+ clrsetbits_le32(®s->nwctrl, ZYNQ_GEM_NWCTRL_RXEN_MASK |
+ ZYNQ_GEM_NWCTRL_TXEN_MASK, 0);
}
static int zynq_gem_miiphyread(const char *devname, uchar addr,
return phywrite(dev, addr, reg, val);
}
-int zynq_gem_initialize(bd_t *bis, int base_addr)
+int zynq_gem_initialize(bd_t *bis, int base_addr, int phy_addr, u32 emio)
{
struct eth_device *dev;
struct zynq_gem_priv *priv;
}
priv = dev->priv;
-#ifdef CONFIG_PHY_ADDR
- priv->phyaddr = CONFIG_PHY_ADDR;
-#else
- priv->phyaddr = -1;
-#endif
+ priv->phyaddr = phy_addr;
+ priv->emio = emio;
sprintf(dev->name, "Gem.%x", base_addr);
projects / karo-tx-uboot.git / blobdiff