int dw_pcie_ep_init(struct dw_pcie_ep *ep)
{
int ret;
void *addr;
struct pci_epc *epc;
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
if (!pci->dbi_base || !pci->dbi_base2) {
dev_err(dev, "dbi_base/deb_base2 is not populated\n");
return -EINVAL;
}
ret = of_property_read_u32(np, "num-ib-windows", &ep->num_ib_windows);
if (ret < 0) {
dev_err(dev, "unable to read *num-ib-windows* property\n");
return ret;
}
if (ep->num_ib_windows > MAX_IATU_IN) {
dev_err(dev, "invalid *num-ib-windows*\n");
return -EINVAL;
}
ret = of_property_read_u32(np, "num-ob-windows", &ep->num_ob_windows);
if (ret < 0) {
dev_err(dev, "unable to read *num-ob-windows* property\n");
return ret;
}
if (ep->num_ob_windows > MAX_IATU_OUT) {
dev_err(dev, "invalid *num-ob-windows*\n");
return -EINVAL;
}
ep->ib_window_map = devm_kzalloc(dev, sizeof(long) *
BITS_TO_LONGS(ep->num_ib_windows),
GFP_KERNEL);
if (!ep->ib_window_map)
return -ENOMEM;
ep->ob_window_map = devm_kzalloc(dev, sizeof(long) *
BITS_TO_LONGS(ep->num_ob_windows),
GFP_KERNEL);
if (!ep->ob_window_map)
return -ENOMEM;
addr = devm_kzalloc(dev, sizeof(phys_addr_t) * ep->num_ob_windows,
GFP_KERNEL);
if (!addr)
return -ENOMEM;
ep->outbound_addr = addr;
if (ep->ops->ep_init)
ep->ops->ep_init(ep);
epc = devm_pci_epc_create(dev, &epc_ops);
if (IS_ERR(epc)) {
dev_err(dev, "failed to create epc device\n");
return PTR_ERR(epc);
}
ret = of_property_read_u8(np, "max-functions", &epc->max_functions);
if (ret < 0)
epc->max_functions = 1;
ret = __pci_epc_mem_init(epc, ep->phys_base, ep->addr_size,
ep->page_size);
if (ret < 0) {
dev_err(dev, "Failed to initialize address space\n");
return ret;
}
ep->msi_mem = pci_epc_mem_alloc_addr(epc, &ep->msi_mem_phys,
epc->mem->page_size);
if (!ep->msi_mem) {
dev_err(dev, "Failed to reserve memory for MSI\n");
return -ENOMEM;
}
ep->epc = epc;
epc_set_drvdata(epc, ep);
dw_pcie_setup(pci);
return 0;
}
int dw_pcie_ep_init(struct dw_pcie_ep *ep)
{
int ret;
void *addr;
enum pci_barno bar;
struct pci_epc *epc;
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
if (!pci->dbi_base || !pci->dbi_base2) {
dev_err(dev, "dbi_base/deb_base2 is not populated\n");
return -EINVAL;
}
ret = of_property_read_u32(np, "num-ib-windows", &ep->num_ib_windows);
if (ret < 0) {
dev_err(dev, "unable to read *num-ib-windows* property\n");
return ret;
}
ret = of_property_read_u32(np, "num-ob-windows", &ep->num_ob_windows);
if (ret < 0) {
dev_err(dev, "unable to read *num-ob-windows* property\n");
return ret;
}
addr = devm_kzalloc(dev, sizeof(phys_addr_t) * ep->num_ob_windows,
GFP_KERNEL);
if (!addr)
return -ENOMEM;
ep->outbound_addr = addr;
for (bar = BAR_0; bar <= BAR_5; bar++)
dw_pcie_ep_reset_bar(pci, bar);
if (ep->ops->ep_init)
ep->ops->ep_init(ep);
epc = devm_pci_epc_create(dev, &epc_ops);
if (IS_ERR(epc)) {
dev_err(dev, "failed to create epc device\n");
return PTR_ERR(epc);
}
ret = of_property_read_u8(np, "max-functions", &epc->max_functions);
if (ret < 0)
epc->max_functions = 1;
ret = pci_epc_mem_init(epc, ep->phys_base, ep->addr_size);
if (ret < 0) {
dev_err(dev, "Failed to initialize address space\n");
return ret;
}
ep->epc = epc;
epc_set_drvdata(epc, ep);
dw_pcie_setup(pci);
return 0;
}
