diff options
author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 15:13:57 -0500 |
---|---|---|
committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-07-02 16:14:24 -0500 |
commit | 527740765629142993966afbd7a836fc47fb30ee (patch) | |
tree | 3676c3e31f5199e56ac1e2a1647b5b6fe231f0c0 /drivers/pci/host/pcie-iproc.c | |
parent | 90634e8540790461a55450595d5b49cc1854f616 (diff) | |
download | linux-stable-527740765629142993966afbd7a836fc47fb30ee.tar.gz linux-stable-527740765629142993966afbd7a836fc47fb30ee.tar.bz2 linux-stable-527740765629142993966afbd7a836fc47fb30ee.zip |
PCI: iproc: Convert PCI scan API to pci_scan_root_bus_bridge()
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>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Jon Mason <jonmason@broadcom.com>
Diffstat (limited to 'drivers/pci/host/pcie-iproc.c')
-rw-r--r-- | drivers/pci/host/pcie-iproc.c | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/pci/host/pcie-iproc.c b/drivers/pci/host/pcie-iproc.c index e48b8e2fa0b9..55a36659dabf 100644 --- a/drivers/pci/host/pcie-iproc.c +++ b/drivers/pci/host/pcie-iproc.c @@ -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: |