This adds support for TSE PCS that uses SGMII adapter when the
phy-mode in device tree is set to sgmii.
Signed-off-by: Ooi, Joyce <joyce.ooi(a)intel.com>
---
drivers/net/Makefile | 3 +-
drivers/net/designware.c | 5 ++
drivers/net/designware.h | 1 +
drivers/net/dwmac_socfpga.c | 121 +++++++++++++++++++++++++
drivers/net/phy/altr_tse_pcs.c | 197 +++++++++++++++++++++++++++++++++++++++++
drivers/net/phy/altr_tse_pcs.h | 59 ++++++++++++
6 files changed, 385 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/phy/altr_tse_pcs.c
create mode 100644 drivers/net/phy/altr_tse_pcs.h
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 48a2878..c2333b5 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -14,7 +14,7 @@ obj-$(CONFIG_CALXEDA_XGMAC) += calxedaxgmac.o
obj-$(CONFIG_CS8900) += cs8900.o
obj-$(CONFIG_TULIP) += dc2114x.o
obj-$(CONFIG_ETH_DESIGNWARE) += designware.o
-obj-$(CONFIG_ETH_DESIGNWARE_SOCFPGA) += dwmac_socfpga.o
+obj-$(CONFIG_ETH_DESIGNWARE_SOCFPGA) += dwmac-socfpga.o
obj-$(CONFIG_DRIVER_DM9000) += dm9000x.o
obj-$(CONFIG_DNET) += dnet.o
obj-$(CONFIG_E1000) += e1000.o
@@ -73,3 +73,4 @@ obj-$(CONFIG_PIC32_ETH) += pic32_mdio.o pic32_eth.o
obj-$(CONFIG_DWC_ETH_QOS) += dwc_eth_qos.o
obj-$(CONFIG_FSL_PFE) += pfe_eth/
obj-$(CONFIG_SNI_AVE) += sni_ave.o
+dwmac-socfpga-objs := phy/altr_tse_pcs.o dwmac_socfpga.o
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 19db0a8..666cf41 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -235,6 +235,8 @@ static int dw_adjust_link(struct dw_eth_dev *priv, struct eth_mac_regs *mac_p,
struct phy_device *phydev)
{
u32 conf = readl(&mac_p->conf) | FRAMEBURSTENABLE | DISABLERXOWN;
+ struct udevice *dev = priv->phydev->dev;
+ struct dw_eth_pdata *dw_pdata = dev_get_platdata(dev);
if (!phydev->link) {
printf("%s: No link.\n", phydev->dev->name);
@@ -254,6 +256,9 @@ static int dw_adjust_link(struct dw_eth_dev *priv, struct eth_mac_regs *mac_p,
writel(conf, &mac_p->conf);
+ if (dw_pdata->pcs_adjust_link)
+ dw_pdata->pcs_adjust_link(dev, phydev);
+
printf("Speed: %d, %s duplex%s\n", phydev->speed,
(phydev->duplex) ? "full" : "half",
(phydev->port == PORT_FIBRE) ? ", fiber mode" : "");
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index dea12b7..3a5a93f 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -255,6 +255,7 @@ extern const struct eth_ops designware_eth_ops;
struct dw_eth_pdata {
struct eth_pdata eth_pdata;
u32 reset_delays[3];
+ void (*pcs_adjust_link)(struct udevice *dev, struct phy_device *phydev);
};
int designware_eth_init(struct dw_eth_dev *priv, u8 *enetaddr);
diff --git a/drivers/net/dwmac_socfpga.c b/drivers/net/dwmac_socfpga.c
index 08fc967..a096d29 100644
--- a/drivers/net/dwmac_socfpga.c
+++ b/drivers/net/dwmac_socfpga.c
@@ -9,12 +9,16 @@
#include <asm/io.h>
#include <dm.h>
#include <clk.h>
+#include <fdt_support.h>
#include <phy.h>
#include <regmap.h>
#include <reset.h>
#include <syscon.h>
#include "designware.h"
+#include "phy/altr_tse_pcs.h"
+#include <asm/arch/mailbox_s10.h>
+#include <asm/arch/reset_manager.h>
#include <asm/arch/system_manager.h>
enum dwmac_type {
@@ -27,8 +31,122 @@ struct dwmac_socfpga_platdata {
struct dw_eth_pdata dw_eth_pdata;
enum dwmac_type type;
void *phy_intf;
+ struct tse_pcs pcs;
};
+static void socfpga_tse_pcs_adjust_link(struct udevice *dev,
+ struct phy_device *phydev)
+{
+ struct dwmac_socfpga_platdata *pdata = dev_get_platdata(dev);
+ phys_addr_t tse_pcs_base = pdata->pcs.tse_pcs_base;
+ phys_addr_t sgmii_adapter_base = pdata->pcs.sgmii_adapter_base;
+
+ if ((tse_pcs_base) && (sgmii_adapter_base))
+ writew(SGMII_ADAPTER_DISABLE,
+ sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
+
+ if ((tse_pcs_base) && (sgmii_adapter_base))
+ tse_pcs_fix_mac_speed(&pdata->pcs, phydev, phydev->speed);
+}
+
+static int socfpga_dw_tse_pcs_init(struct udevice *dev)
+{
+ struct dwmac_socfpga_platdata *pdata = dev_get_platdata(dev);
+ struct dw_eth_pdata *dw_pdata = &pdata->dw_eth_pdata;
+ struct eth_pdata *eth_pdata = &pdata->dw_eth_pdata.eth_pdata;
+ phys_addr_t tse_pcs_base = pdata->pcs.tse_pcs_base;
+ phys_addr_t sgmii_adapter_base = pdata->pcs.sgmii_adapter_base;
+ const fdt32_t *reg;
+ int ret = 0;
+ int parent, index, na, ns, offset, len;
+
+ offset = fdtdec_lookup_phandle(gd->fdt_blob, dev_of_offset(dev),
+ "altr,gmii-to-sgmii-converter");
+ if (offset > 0) {
+ /* check FPGA status */
+ ret = mbox_get_fpga_config_status(MBOX_CONFIG_STATUS);
+ if (ret) {
+ debug("%s: FPGA status returns %d\n", __func__, ret);
+ return -EPERM;
+ }
+
+ /* enable HPS bridge */
+ socfpga_bridges_reset(1);
+
+ parent = fdt_parent_offset(gd->fdt_blob, offset);
+ if (parent < 0) {
+ debug("s10-hps-bridge DT not found\n");
+ return -ENODEV;
+ }
+
+ na = fdt_address_cells(gd->fdt_blob, parent);
+ if (na < 1) {
+ debug("bad #address-cells\n");
+ return -EINVAL;
+ }
+
+ ns = fdt_size_cells(gd->fdt_blob, parent);
+ if (ns < 1) {
+ debug("bad #size-cells\n");
+ return -EINVAL;
+ }
+
+ index = fdt_stringlist_search(gd->fdt_blob, offset, "reg-names",
+ "eth_tse_control_port");
+ if (index < 0) {
+ debug("fail to find eth_tse_control_port: %s\n",
+ fdt_strerror(index));
+ return -ENOENT;
+ }
+
+ reg = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
+ if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns))))
+ return -EINVAL;
+
+ reg += index * (na + ns);
+ tse_pcs_base = fdt_translate_address((void *)gd->fdt_blob,
+ offset, reg);
+ if (tse_pcs_base == FDT_ADDR_T_NONE) {
+ debug("tse pcs address not found\n");
+ return -EINVAL;
+ }
+
+ index = fdt_stringlist_search(gd->fdt_blob, offset, "reg-names",
+ "gmii_to_sgmii_adapter_avalon_slave");
+ if (index < 0) {
+ debug("fail to find gmii_to_sgmii_adapter_avalon_slave: %s\n",
+ fdt_strerror(index));
+ return -EINVAL;
+ }
+
+ reg = fdt_getprop(gd->fdt_blob, offset, "reg", &len);
+ if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns))))
+ return -EINVAL;
+
+ reg += index * (na + ns);
+ sgmii_adapter_base = fdt_translate_address((void *)gd->fdt_blob,
+ offset, reg);
+ if (sgmii_adapter_base == FDT_ADDR_T_NONE) {
+ debug("gmii-to-sgmii adapter address not found\n");
+ return -EINVAL;
+ }
+
+ if (eth_pdata->phy_interface == PHY_INTERFACE_MODE_SGMII) {
+ if (tse_pcs_init(tse_pcs_base, &pdata->pcs) != 0) {
+ debug("Unable to intiialize TSE PCS\n");
+ return -EINVAL;
+ }
+ }
+ /* Clear sgmii_adapter_base first */
+ writel(0, sgmii_adapter_base);
+
+ pdata->pcs.tse_pcs_base = tse_pcs_base;
+ pdata->pcs.sgmii_adapter_base = sgmii_adapter_base;
+ dw_pdata->pcs_adjust_link = socfpga_tse_pcs_adjust_link;
+ }
+ return ret;
+}
+
static int dwmac_socfpga_ofdata_to_platdata(struct udevice *dev)
{
struct dwmac_socfpga_platdata *pdata = dev_get_platdata(dev);
@@ -94,6 +212,7 @@ static int dwmac_socfpga_probe(struct udevice *dev)
switch (edata->phy_interface) {
case PHY_INTERFACE_MODE_MII:
case PHY_INTERFACE_MODE_GMII:
+ case PHY_INTERFACE_MODE_SGMII:
modereg = SYSMGR_EMACGRP_CTRL_PHYSEL_ENUM_GMII_MII;
break;
case PHY_INTERFACE_MODE_RMII:
@@ -122,6 +241,8 @@ static int dwmac_socfpga_probe(struct udevice *dev)
reset_release_bulk(&reset_bulk);
}
+ socfpga_dw_tse_pcs_init(dev);
+
return designware_eth_probe(dev);
}
diff --git a/drivers/net/phy/altr_tse_pcs.c b/drivers/net/phy/altr_tse_pcs.c
new file mode 100644
index 0000000..fa8077c
--- /dev/null
+++ b/drivers/net/phy/altr_tse_pcs.c
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017-2018, Intel Corporation. All rights reserved
+ */
+
+#include <asm/io.h>
+#include <common.h>
+#include <command.h>
+#include <malloc.h>
+#include <net.h>
+#include <linux/compat.h>
+#include <phy.h>
+#include <timer.h>
+#include <linux/ethtool.h>
+
+#include <asm/omap_common.h>
+#include <asm/omap_musb.h>
+
+#include "altr_tse_pcs.h"
+
+static int tse_pcs_reset(phys_addr_t base, struct tse_pcs *pcs)
+{
+ int counter = 0;
+ u16 val;
+
+ val = readw(base + TSE_PCS_CONTROL_REG);
+ val |= TSE_PCS_SW_RST_MASK;
+
+ writew(val, base + TSE_PCS_CONTROL_REG);
+
+ while (counter < TSE_PCS_SW_RESET_TIMEOUT) {
+ val = readw(base + TSE_PCS_CONTROL_REG);
+ val &= TSE_PCS_SW_RST_MASK;
+ if (val == 0)
+ break;
+ counter++;
+ udelay(1);
+ }
+
+ if (counter >= TSE_PCS_SW_RESET_TIMEOUT) {
+ debug("%s: PCS could not get out of sw reset\n", __func__);
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+int tse_pcs_init(phys_addr_t base, struct tse_pcs *pcs)
+{
+ int ret = 0;
+
+ writew(TSE_PCS_USE_SGMII_ENA, base + TSE_PCS_IF_MODE_REG);
+ writew(TSE_PCS_SGMII_LINK_TIMER_0, base + TSE_PCS_LINK_TIMER_0_REG);
+ writew(TSE_PCS_SGMII_LINK_TIMER_1, base + TSE_PCS_LINK_TIMER_1_REG);
+
+ ret = tse_pcs_reset(base, pcs);
+ if (ret == 0)
+ writew(SGMII_ADAPTER_ENABLE,
+ pcs->sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
+
+ return ret;
+}
+
+static void pcs_link_timer_callback(struct tse_pcs *pcs)
+{
+ u16 val = 0;
+ phys_addr_t tse_pcs_base = pcs->tse_pcs_base;
+ phys_addr_t sgmii_adapter_base = pcs->sgmii_adapter_base;
+
+ val = readw(tse_pcs_base + TSE_PCS_STATUS_REG);
+ val &= TSE_PCS_STATUS_LINK_MASK;
+
+ if (val != 0) {
+ printf("Adapter: Link is established\n");
+ writew(SGMII_ADAPTER_ENABLE,
+ sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
+ } else {
+ printf("Adapter: Link fail to establish\n");
+ }
+}
+
+static void auto_nego_timer_callback(struct tse_pcs *pcs)
+{
+ u16 val = 0;
+ u16 speed = 0;
+ u16 duplex = 0;
+ phys_addr_t tse_pcs_base = pcs->tse_pcs_base;
+ phys_addr_t sgmii_adapter_base = pcs->sgmii_adapter_base;
+
+ val = readw(tse_pcs_base + TSE_PCS_STATUS_REG);
+ val &= TSE_PCS_STATUS_AN_COMPLETED_MASK;
+
+ if (val != 0) {
+ printf("Adapter: Auto Negotiation is completed\n");
+ val = readw(tse_pcs_base + TSE_PCS_PARTNER_ABILITY_REG);
+ speed = val & TSE_PCS_PARTNER_SPEED_MASK;
+ duplex = val & TSE_PCS_PARTNER_DUPLEX_MASK;
+
+ if (speed == TSE_PCS_PARTNER_SPEED_10 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_FULL)
+ printf("Adapter: Link Partner is Up - 10/Full\n");
+ else if (speed == TSE_PCS_PARTNER_SPEED_100 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_FULL)
+ printf("Adapter: Link Partner is Up - 100/Full\n");
+ else if (speed == TSE_PCS_PARTNER_SPEED_1000 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_FULL)
+ printf("Adapter: Link Partner is Up - 1000/Full\n");
+ else if (speed == TSE_PCS_PARTNER_SPEED_10 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_HALF)
+ printf("Adapter does not support Half Duplex\n");
+ else if (speed == TSE_PCS_PARTNER_SPEED_100 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_HALF)
+ printf("Adapter does not support Half Duplex\n");
+ else if (speed == TSE_PCS_PARTNER_SPEED_1000 &&
+ duplex == TSE_PCS_PARTNER_DUPLEX_HALF)
+ printf("Adapter does not support Half Duplex\n");
+ else
+ printf("Adapter: Invalid Partner Speed and Duplex\n");
+
+ if (duplex == TSE_PCS_PARTNER_DUPLEX_FULL &&
+ (speed == TSE_PCS_PARTNER_SPEED_10 ||
+ speed == TSE_PCS_PARTNER_SPEED_100 ||
+ speed == TSE_PCS_PARTNER_SPEED_1000))
+ writew(SGMII_ADAPTER_ENABLE,
+ sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
+ } else {
+ printf("Auto-negotioation failed\n");
+ }
+}
+
+void tse_pcs_fix_mac_speed(struct tse_pcs *pcs, struct phy_device *phy_dev,
+ unsigned int speed)
+{
+ phys_addr_t tse_pcs_base = pcs->tse_pcs_base;
+ phys_addr_t sgmii_adapter_base = pcs->sgmii_adapter_base;
+ u32 val, start;
+
+ writew(SGMII_ADAPTER_ENABLE,
+ sgmii_adapter_base + SGMII_ADAPTER_CTRL_REG);
+ pcs->autoneg = phy_dev->autoneg;
+
+ if (pcs->autoneg == AUTONEG_ENABLE) {
+ val = readw(tse_pcs_base + TSE_PCS_CONTROL_REG);
+ val |= TSE_PCS_CONTROL_AN_EN_MASK;
+ writew(val, tse_pcs_base + TSE_PCS_CONTROL_REG);
+
+ val = readw(tse_pcs_base + TSE_PCS_IF_MODE_REG);
+ val |= TSE_PCS_USE_SGMII_AN_MASK;
+ writew(val, tse_pcs_base + TSE_PCS_IF_MODE_REG);
+
+ val = readw(tse_pcs_base + TSE_PCS_CONTROL_REG);
+ val |= TSE_PCS_CONTROL_RESTART_AN_MASK;
+
+ tse_pcs_reset(tse_pcs_base, pcs);
+
+ } else if (pcs->autoneg == AUTONEG_DISABLE) {
+ val = readw(tse_pcs_base + TSE_PCS_CONTROL_REG);
+ val &= ~TSE_PCS_CONTROL_AN_EN_MASK;
+ writew(val, tse_pcs_base + TSE_PCS_CONTROL_REG);
+
+ val = readw(tse_pcs_base + TSE_PCS_IF_MODE_REG);
+ val &= ~TSE_PCS_USE_SGMII_AN_MASK;
+ writew(val, tse_pcs_base + TSE_PCS_IF_MODE_REG);
+
+ val = readw(tse_pcs_base + TSE_PCS_IF_MODE_REG);
+ val &= ~TSE_PCS_SGMII_SPEED_MASK;
+
+ switch (speed) {
+ case 1000:
+ val |= TSE_PCS_SGMII_SPEED_1000;
+ break;
+ case 100:
+ val |= TSE_PCS_SGMII_SPEED_100;
+ break;
+ case 10:
+ val |= TSE_PCS_SGMII_SPEED_10;
+ break;
+ default:
+ return;
+ }
+ writew(val, tse_pcs_base + TSE_PCS_IF_MODE_REG);
+
+ tse_pcs_reset(tse_pcs_base, pcs);
+ }
+
+ start = get_timer(0);
+ while (1) {
+ if (get_timer(start) >= AUTONEGO_LINK_TIMER) {
+ if (pcs->autoneg == AUTONEG_ENABLE)
+ auto_nego_timer_callback(pcs);
+ else if (pcs->autoneg == AUTONEG_DISABLE)
+ pcs_link_timer_callback(pcs);
+ return;
+ }
+ udelay(100);
+ }
+}
diff --git a/drivers/net/phy/altr_tse_pcs.h b/drivers/net/phy/altr_tse_pcs.h
new file mode 100644
index 0000000..9a2016a
--- /dev/null
+++ b/drivers/net/phy/altr_tse_pcs.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2017-2018, Intel Corporation. All rights reserved
+ */
+
+#ifndef __TSE_PCS_H__
+#define __TSE_PCS_H__
+
+#define TSE_PCS_CONTROL_AN_EN_MASK BIT(12)
+#define TSE_PCS_CONTROL_REG 0x00
+#define TSE_PCS_CONTROL_RESTART_AN_MASK BIT(9)
+#define TSE_PCS_IF_MODE_REG 0x28
+#define TSE_PCS_LINK_TIMER_0_REG 0x24
+#define TSE_PCS_LINK_TIMER_1_REG 0x26
+#define TSE_PCS_SIZE 0x40
+#define TSE_PCS_STATUS_AN_COMPLETED_MASK BIT(5)
+#define TSE_PCS_STATUS_LINK_MASK 0x0004
+#define TSE_PCS_STATUS_REG 0x02
+#define TSE_PCS_SGMII_SPEED_1000 BIT(3)
+#define TSE_PCS_SGMII_SPEED_100 BIT(2)
+#define TSE_PCS_SGMII_SPEED_10 0x0
+#define TSE_PCS_SW_RST_MASK 0x8000
+#define TSE_PCS_PARTNER_ABILITY_REG 0x0A
+#define TSE_PCS_PARTNER_DUPLEX_FULL 0x1000
+#define TSE_PCS_PARTNER_DUPLEX_HALF 0x0000
+#define TSE_PCS_PARTNER_DUPLEX_MASK 0x1000
+#define TSE_PCS_PARTNER_SPEED_MASK GENMASK(11, 10)
+#define TSE_PCS_PARTNER_SPEED_1000 BIT(11)
+#define TSE_PCS_PARTNER_SPEED_100 BIT(10)
+#define TSE_PCS_PARTNER_SPEED_10 0x0000
+#define TSE_PCS_PARTNER_SPEED_1000 BIT(11)
+#define TSE_PCS_PARTNER_SPEED_100 BIT(10)
+#define TSE_PCS_PARTNER_SPEED_10 0x0000
+#define TSE_PCS_SGMII_SPEED_MASK GENMASK(3, 2)
+#define TSE_PCS_SGMII_LINK_TIMER_0 0x0D40
+#define TSE_PCS_SGMII_LINK_TIMER_1 0x0003
+#define TSE_PCS_SW_RESET_TIMEOUT 100
+#define TSE_PCS_USE_SGMII_AN_MASK BIT(1)
+#define TSE_PCS_USE_SGMII_ENA BIT(0)
+
+#define SGMII_ADAPTER_CTRL_REG 0x00
+#define SGMII_ADAPTER_DISABLE 0x0001
+#define SGMII_ADAPTER_ENABLE 0x0000
+
+#define AUTONEGO_LINK_TIMER 20
+
+struct tse_pcs {
+ struct device *dev;
+ phys_addr_t tse_pcs_base;
+ phys_addr_t sgmii_adapter_base;
+ struct timer_list aneg_link_timer;
+ int autoneg;
+};
+
+int tse_pcs_init(phys_addr_t base, struct tse_pcs *pcs);
+void tse_pcs_fix_mac_speed(struct tse_pcs *pcs, struct phy_device *phy_dev,
+ unsigned int speed);
+
+#endif /* __TSE_PCS_H__ */
--
1.9.1
