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path: root/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
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Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c')
-rw-r--r--drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c118
1 files changed, 64 insertions, 54 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index e254b21fdb59..e30bdf72331a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -21,6 +21,7 @@
#define RGMII_IO_MACRO_CONFIG2 0x1C
#define RGMII_IO_MACRO_DEBUG1 0x20
#define EMAC_SYSTEM_LOW_POWER_DEBUG 0x28
+#define EMAC_WRAPPER_SGMII_PHY_CNTRL1 0xf4
/* RGMII_IO_MACRO_CONFIG fields */
#define RGMII_CONFIG_FUNC_CLK_EN BIT(30)
@@ -79,6 +80,9 @@
#define ETHQOS_MAC_CTRL_SPEED_MODE BIT(14)
#define ETHQOS_MAC_CTRL_PORT_SEL BIT(15)
+/* EMAC_WRAPPER_SGMII_PHY_CNTRL1 bits */
+#define SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN BIT(3)
+
#define SGMII_10M_RX_CLK_DVDR 0x31
struct ethqos_emac_por {
@@ -93,19 +97,20 @@ struct ethqos_emac_driver_data {
bool has_emac_ge_3;
const char *link_clk_name;
bool has_integrated_pcs;
+ u32 dma_addr_width;
struct dwmac4_addrs dwmac4_addrs;
+ bool needs_sgmii_loopback;
};
struct qcom_ethqos {
struct platform_device *pdev;
void __iomem *rgmii_base;
void __iomem *mac_base;
- int (*configure_func)(struct qcom_ethqos *ethqos);
+ int (*configure_func)(struct qcom_ethqos *ethqos, int speed);
unsigned int link_clk_rate;
struct clk *link_clk;
struct phy *serdes_phy;
- unsigned int speed;
int serdes_speed;
phy_interface_t phy_mode;
@@ -113,6 +118,7 @@ struct qcom_ethqos {
unsigned int num_por;
bool rgmii_config_loopback_en;
bool has_emac_ge_3;
+ bool needs_sgmii_loopback;
};
static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -162,36 +168,37 @@ static void rgmii_dump(void *priv)
rgmii_readl(ethqos, EMAC_SYSTEM_LOW_POWER_DEBUG));
}
-/* Clock rates */
-#define RGMII_1000_NOM_CLK_FREQ (250 * 1000 * 1000UL)
-#define RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ (50 * 1000 * 1000UL)
-#define RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ (5 * 1000 * 1000UL)
-
static void
-ethqos_update_link_clk(struct qcom_ethqos *ethqos, unsigned int speed)
+ethqos_update_link_clk(struct qcom_ethqos *ethqos, int speed)
{
+ long rate;
+
if (!phy_interface_mode_is_rgmii(ethqos->phy_mode))
return;
- switch (speed) {
- case SPEED_1000:
- ethqos->link_clk_rate = RGMII_1000_NOM_CLK_FREQ;
- break;
+ rate = rgmii_clock(speed);
+ if (rate > 0)
+ ethqos->link_clk_rate = rate * 2;
- case SPEED_100:
- ethqos->link_clk_rate = RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ;
- break;
+ clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate);
+}
- case SPEED_10:
- ethqos->link_clk_rate = RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ;
- break;
- }
+static void
+qcom_ethqos_set_sgmii_loopback(struct qcom_ethqos *ethqos, bool enable)
+{
+ if (!ethqos->needs_sgmii_loopback ||
+ ethqos->phy_mode != PHY_INTERFACE_MODE_2500BASEX)
+ return;
- clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate);
+ rgmii_updatel(ethqos,
+ SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN,
+ enable ? SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN : 0,
+ EMAC_WRAPPER_SGMII_PHY_CNTRL1);
}
static void ethqos_set_func_clk_en(struct qcom_ethqos *ethqos)
{
+ qcom_ethqos_set_sgmii_loopback(ethqos, true);
rgmii_updatel(ethqos, RGMII_CONFIG_FUNC_CLK_EN,
RGMII_CONFIG_FUNC_CLK_EN, RGMII_IO_MACRO_CONFIG);
}
@@ -271,11 +278,13 @@ static const struct ethqos_emac_por emac_v4_0_0_por[] = {
static const struct ethqos_emac_driver_data emac_v4_0_0_data = {
.por = emac_v4_0_0_por,
- .num_por = ARRAY_SIZE(emac_v3_0_0_por),
+ .num_por = ARRAY_SIZE(emac_v4_0_0_por),
.rgmii_config_loopback_en = false,
.has_emac_ge_3 = true,
.link_clk_name = "phyaux",
.has_integrated_pcs = true,
+ .needs_sgmii_loopback = true,
+ .dma_addr_width = 36,
.dwmac4_addrs = {
.dma_chan = 0x00008100,
.dma_chan_offset = 0x1000,
@@ -375,7 +384,7 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
return 0;
}
-static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
+static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos, int speed)
{
struct device *dev = &ethqos->pdev->dev;
int phase_shift;
@@ -402,7 +411,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, RGMII_CONFIG_INTF_SEL,
0, RGMII_IO_MACRO_CONFIG);
- switch (ethqos->speed) {
+ switch (speed) {
case SPEED_1000:
rgmii_updatel(ethqos, RGMII_CONFIG_DDR_MODE,
RGMII_CONFIG_DDR_MODE, RGMII_IO_MACRO_CONFIG);
@@ -522,14 +531,14 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
loopback, RGMII_IO_MACRO_CONFIG);
break;
default:
- dev_err(dev, "Invalid speed %d\n", ethqos->speed);
+ dev_err(dev, "Invalid speed %d\n", speed);
return -EINVAL;
}
return 0;
}
-static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
+static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos, int speed)
{
struct device *dev = &ethqos->pdev->dev;
volatile unsigned int dll_lock;
@@ -552,7 +561,7 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG);
if (ethqos->has_emac_ge_3) {
- if (ethqos->speed == SPEED_1000) {
+ if (speed == SPEED_1000) {
rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL);
rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL);
rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2);
@@ -570,7 +579,7 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN, 0,
SDCC_HC_REG_DLL_CONFIG);
- if (ethqos->speed != SPEED_100 && ethqos->speed != SPEED_10) {
+ if (speed != SPEED_100 && speed != SPEED_10) {
/* Set DLL_EN */
rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN,
SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG);
@@ -597,18 +606,26 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos)
dev_err(dev, "Timeout while waiting for DLL lock\n");
}
- if (ethqos->speed == SPEED_1000)
+ if (speed == SPEED_1000)
ethqos_dll_configure(ethqos);
- ethqos_rgmii_macro_init(ethqos);
+ ethqos_rgmii_macro_init(ethqos, speed);
return 0;
}
+static void ethqos_set_serdes_speed(struct qcom_ethqos *ethqos, int speed)
+{
+ if (ethqos->serdes_speed != speed) {
+ phy_set_speed(ethqos->serdes_phy, speed);
+ ethqos->serdes_speed = speed;
+ }
+}
+
/* On interface toggle MAC registers gets reset.
* Configure MAC block for SGMII on ethernet phy link up
*/
-static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
+static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos, int speed)
{
struct net_device *dev = platform_get_drvdata(ethqos->pdev);
struct stmmac_priv *priv = netdev_priv(dev);
@@ -616,15 +633,13 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
val = readl(ethqos->mac_base + MAC_CTRL_REG);
- switch (ethqos->speed) {
+ switch (speed) {
case SPEED_2500:
val &= ~ETHQOS_MAC_CTRL_PORT_SEL;
rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_IO_MACRO_CONFIG2);
- if (ethqos->serdes_speed != SPEED_2500)
- phy_set_speed(ethqos->serdes_phy, SPEED_2500);
- ethqos->serdes_speed = SPEED_2500;
+ ethqos_set_serdes_speed(ethqos, SPEED_2500);
stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 0, 0, 0);
break;
case SPEED_1000:
@@ -632,16 +647,12 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_CONFIG2_RGMII_CLK_SEL_CFG,
RGMII_IO_MACRO_CONFIG2);
- if (ethqos->serdes_speed != SPEED_1000)
- phy_set_speed(ethqos->serdes_phy, SPEED_1000);
- ethqos->serdes_speed = SPEED_1000;
+ ethqos_set_serdes_speed(ethqos, SPEED_1000);
stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
break;
case SPEED_100:
val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE;
- if (ethqos->serdes_speed != SPEED_1000)
- phy_set_speed(ethqos->serdes_phy, SPEED_1000);
- ethqos->serdes_speed = SPEED_1000;
+ ethqos_set_serdes_speed(ethqos, SPEED_1000);
stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
break;
case SPEED_10:
@@ -651,9 +662,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
FIELD_PREP(RGMII_CONFIG_SGMII_CLK_DVDR,
SGMII_10M_RX_CLK_DVDR),
RGMII_IO_MACRO_CONFIG);
- if (ethqos->serdes_speed != SPEED_1000)
- phy_set_speed(ethqos->serdes_phy, ethqos->speed);
- ethqos->serdes_speed = SPEED_1000;
+ ethqos_set_serdes_speed(ethqos, SPEED_1000);
stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0);
break;
}
@@ -663,18 +672,18 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos)
return val;
}
-static int ethqos_configure(struct qcom_ethqos *ethqos)
+static int ethqos_configure(struct qcom_ethqos *ethqos, int speed)
{
- return ethqos->configure_func(ethqos);
+ return ethqos->configure_func(ethqos, speed);
}
-static void ethqos_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
+static void ethqos_fix_mac_speed(void *priv, int speed, unsigned int mode)
{
struct qcom_ethqos *ethqos = priv;
- ethqos->speed = speed;
+ qcom_ethqos_set_sgmii_loopback(ethqos, false);
ethqos_update_link_clk(ethqos, speed);
- ethqos_configure(ethqos);
+ ethqos_configure(ethqos, speed);
}
static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv)
@@ -690,7 +699,7 @@ static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv)
if (ret)
return ret;
- return phy_set_speed(ethqos->serdes_phy, ethqos->speed);
+ return phy_set_speed(ethqos->serdes_phy, ethqos->serdes_speed);
}
static void qcom_ethqos_serdes_powerdown(struct net_device *ndev, void *priv)
@@ -745,7 +754,7 @@ static void ethqos_ptp_clk_freq_config(struct stmmac_priv *priv)
netdev_err(priv->dev, "Failed to max out clk_ptp_ref: %d\n", err);
plat_dat->clk_ptp_rate = clk_get_rate(plat_dat->clk_ptp_ref);
- netdev_dbg(priv->dev, "PTP rate %d\n", plat_dat->clk_ptp_rate);
+ netdev_dbg(priv->dev, "PTP rate %lu\n", plat_dat->clk_ptp_rate);
}
static int qcom_ethqos_probe(struct platform_device *pdev)
@@ -775,9 +784,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
if (!ethqos)
return -ENOMEM;
- ret = of_get_phy_mode(np, &ethqos->phy_mode);
- if (ret)
- return dev_err_probe(dev, ret, "Failed to get phy mode\n");
+ ethqos->phy_mode = plat_dat->phy_interface;
switch (ethqos->phy_mode) {
case PHY_INTERFACE_MODE_RGMII:
case PHY_INTERFACE_MODE_RGMII_ID:
@@ -785,6 +792,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
case PHY_INTERFACE_MODE_RGMII_TXID:
ethqos->configure_func = ethqos_configure_rgmii;
break;
+ case PHY_INTERFACE_MODE_2500BASEX:
case PHY_INTERFACE_MODE_SGMII:
ethqos->configure_func = ethqos_configure_sgmii;
break;
@@ -807,6 +815,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
ethqos->num_por = data->num_por;
ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
ethqos->has_emac_ge_3 = data->has_emac_ge_3;
+ ethqos->needs_sgmii_loopback = data->needs_sgmii_loopback;
ethqos->link_clk = devm_clk_get(dev, data->link_clk_name ?: "rgmii");
if (IS_ERR(ethqos->link_clk))
@@ -826,7 +835,6 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(ethqos->serdes_phy),
"Failed to get serdes phy\n");
- ethqos->speed = SPEED_1000;
ethqos->serdes_speed = SPEED_1000;
ethqos_update_link_clk(ethqos, SPEED_1000);
ethqos_set_func_clk_en(ethqos);
@@ -845,6 +853,8 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
plat_dat->flags |= STMMAC_FLAG_RX_CLK_RUNS_IN_LPI;
if (data->has_integrated_pcs)
plat_dat->flags |= STMMAC_FLAG_HAS_INTEGRATED_PCS;
+ if (data->dma_addr_width)
+ plat_dat->host_dma_width = data->dma_addr_width;
if (ethqos->serdes_phy) {
plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup;
generated by cgit (git 2.34.1) at 2025-07-23 19:03:59 +0000