dev_err(pci->dev, "write DBI address failed\n");
}
-u32 dw_pcie_read_atu(struct dw_pcie *pci, u32 reg, size_t size)
+static u32 dw_pcie_readl_atu(struct dw_pcie *pci, u32 reg)
{
int ret;
u32 val;
if (pci->ops->read_dbi)
- return pci->ops->read_dbi(pci, pci->atu_base, reg, size);
+ return pci->ops->read_dbi(pci, pci->atu_base, reg, 4);
- ret = dw_pcie_read(pci->atu_base + reg, size, &val);
+ ret = dw_pcie_read(pci->atu_base + reg, 4, &val);
if (ret)
dev_err(pci->dev, "Read ATU address failed\n");
return val;
}
-void dw_pcie_write_atu(struct dw_pcie *pci, u32 reg, size_t size, u32 val)
+static void dw_pcie_writel_atu(struct dw_pcie *pci, u32 reg, u32 val)
{
int ret;
if (pci->ops->write_dbi) {
- pci->ops->write_dbi(pci, pci->atu_base, reg, size, val);
+ pci->ops->write_dbi(pci, pci->atu_base, reg, 4, val);
return;
}
- ret = dw_pcie_write(pci->atu_base + reg, size, val);
+ ret = dw_pcie_write(pci->atu_base + reg, 4, val);
if (ret)
dev_err(pci->dev, "Write ATU address failed\n");
}
}
EXPORT_SYMBOL_GPL(dw_pcie_upconfig_setup);
-void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen)
+static void dw_pcie_link_set_max_speed(struct dw_pcie *pci, u32 link_gen)
{
- u32 reg, val;
+ u32 cap, ctrl2, link_speed;
u8 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP);
- reg = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2);
- reg &= ~PCI_EXP_LNKCTL2_TLS;
+ cap = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP);
+ ctrl2 = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCTL2);
+ ctrl2 &= ~PCI_EXP_LNKCTL2_TLS;
switch (pcie_link_speed[link_gen]) {
case PCIE_SPEED_2_5GT:
- reg |= PCI_EXP_LNKCTL2_TLS_2_5GT;
+ link_speed = PCI_EXP_LNKCTL2_TLS_2_5GT;
break;
case PCIE_SPEED_5_0GT:
- reg |= PCI_EXP_LNKCTL2_TLS_5_0GT;
+ link_speed = PCI_EXP_LNKCTL2_TLS_5_0GT;
break;
case PCIE_SPEED_8_0GT:
- reg |= PCI_EXP_LNKCTL2_TLS_8_0GT;
+ link_speed = PCI_EXP_LNKCTL2_TLS_8_0GT;
break;
case PCIE_SPEED_16_0GT:
- reg |= PCI_EXP_LNKCTL2_TLS_16_0GT;
+ link_speed = PCI_EXP_LNKCTL2_TLS_16_0GT;
break;
default:
/* Use hardware capability */
- val = dw_pcie_readl_dbi(pci, offset + PCI_EXP_LNKCAP);
- val = FIELD_GET(PCI_EXP_LNKCAP_SLS, val);
- reg &= ~PCI_EXP_LNKCTL2_HASD;
- reg |= FIELD_PREP(PCI_EXP_LNKCTL2_TLS, val);
+ link_speed = FIELD_GET(PCI_EXP_LNKCAP_SLS, cap);
+ ctrl2 &= ~PCI_EXP_LNKCTL2_HASD;
break;
}
- dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCTL2, reg);
+ dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCTL2, ctrl2 | link_speed);
+
+ cap &= ~((u32)PCI_EXP_LNKCAP_SLS);
+ dw_pcie_writel_dbi(pci, offset + PCI_EXP_LNKCAP, cap | link_speed);
+
}
-EXPORT_SYMBOL_GPL(dw_pcie_link_set_max_speed);
void dw_pcie_link_set_n_fts(struct dw_pcie *pci, u32 n_fts)
{
dev_dbg(pci->dev, "iATU unroll: %s\n", pci->iatu_unroll_enabled ?
"enabled" : "disabled");
+ if (pci->link_gen > 0)
+ dw_pcie_link_set_max_speed(pci, pci->link_gen);
+
val = dw_pcie_readl_dbi(pci, PCIE_PORT_LINK_CONTROL);
val &= ~PORT_LINK_FAST_LINK_MODE;
+ val |= PORT_LINK_DLL_LINK_EN;
dw_pcie_writel_dbi(pci, PCIE_PORT_LINK_CONTROL, val);
of_property_read_u32(np, "num-lanes", &pci->num_lanes);