@@ -45,12 +45,15 @@ static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
struct device *dev = &bdev->dev;
struct iproc_pcie *pcie;
LIST_HEAD(resources);
+ struct pci_host_bridge *bridge;
int ret;
- pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
- if (!pcie)
+ bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
+ if (!bridge)
return -ENOMEM;
+ pcie = pci_host_bridge_priv(bridge);
+
pcie->dev = dev;
pcie->type = IPROC_PCIE_PAXB_BCMA;
@@ -52,12 +52,15 @@ static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
struct resource reg;
resource_size_t iobase = 0;
LIST_HEAD(resources);
+ struct pci_host_bridge *bridge;
int ret;
- pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
- if (!pcie)
+ bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
+ if (!bridge)
return -ENOMEM;
+ pcie = pci_host_bridge_priv(bridge);
+
pcie->dev = dev;
pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev);
@@ -1259,7 +1259,8 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
struct device *dev;
int ret;
void *sysdata;
- struct pci_bus *bus, *child;
+ struct pci_bus *child;
+ struct pci_host_bridge *host = pci_host_bridge_from_priv(pcie);
dev = pcie->dev;
@@ -1306,18 +1307,10 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
sysdata = pcie;
#endif
- bus = pci_create_root_bus(dev, 0, &iproc_pcie_ops, sysdata, res);
- if (!bus) {
- dev_err(dev, "unable to create PCI root bus\n");
- ret = -ENOMEM;
- goto err_power_off_phy;
- }
- pcie->root_bus = bus;
-
ret = iproc_pcie_check_link(pcie);
if (ret) {
dev_err(dev, "no PCIe EP device detected\n");
- goto err_rm_root_bus;
+ goto err_power_off_phy;
}
iproc_pcie_enable(pcie);
@@ -1326,23 +1319,32 @@ int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res)
if (iproc_pcie_msi_enable(pcie))
dev_info(dev, "not using iProc MSI\n");
- pci_scan_child_bus(bus);
- pci_assign_unassigned_bus_resources(bus);
+ list_splice_init(res, &host->windows);
+ host->busnr = 0;
+ host->dev.parent = dev;
+ host->ops = &iproc_pcie_ops;
+ host->sysdata = sysdata;
+
+ ret = pci_scan_root_bus_bridge(host);
+ if (ret < 0) {
+ dev_err(dev, "failed to scan host: %d\n", ret);
+ goto err_power_off_phy;
+ }
if (pcie->map_irq)
pci_fixup_irqs(pci_common_swizzle, pcie->map_irq);
- list_for_each_entry(child, &bus->children, node)
+ pci_assign_unassigned_bus_resources(host->bus);
+
+ pcie->root_bus = host->bus;
+
+ list_for_each_entry(child, &host->bus->children, node)
pcie_bus_configure_settings(child);
- pci_bus_add_devices(bus);
+ pci_bus_add_devices(host->bus);
return 0;
-err_rm_root_bus:
- pci_stop_root_bus(bus);
- pci_remove_root_bus(bus);
-
err_power_off_phy:
phy_power_off(pcie->phy);
err_exit_phy:
The introduction of pci_scan_root_bus_bridge() provides a PCI core API to scan a PCI root bus backed by an already initialized struct pci_host_bridge object, which simplifies the bus scan interface and makes the PCI scan root bus interface easier to generalize as members are added to the struct pci_host_bridge. Convert PCI iproc host code to pci_scan_root_bus_bridge() to improve the PCI root bus scanning interface. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Scott Branden <sbranden@broadcom.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Ray Jui <rjui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> --- drivers/pci/host/pcie-iproc-bcma.c | 7 +++++-- drivers/pci/host/pcie-iproc-platform.c | 7 +++++-- drivers/pci/host/pcie-iproc.c | 38 ++++++++++++++++++---------------- 3 files changed, 30 insertions(+), 22 deletions(-)