diff options
| author | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2017-06-28 15:13:55 -0500 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2017-06-28 15:13:55 -0500 |
| commit | 97ad2bdcbe8598a69ee1f372ed6c0fbdb2869218 (patch) | |
| tree | b35c25eb4093c0d19f7b3fa6d8c17c0ff2fabdb5 /arch/arm/mach-orion5x | |
| parent | cea9bc0be624fb0dc488cb10df40be1323b6b758 (diff) | |
ARM/PCI: 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 ARM bios32 code to pci_scan_root_bus_bridge() to improve the PCI
root bus scanning interface.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[bhelgaas: fold in warning fix from Arnd Bergmann <arnd@arndb.de>:
http://lkml.kernel.org/r/20170621215323.3921382-1-arnd@arndb.de]
[bhelgaas: set bridge->ops for mv78xx0]
[bhelgaas: fold in fixes from Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>:
http://lkml.kernel.org/r/20170701135457.GB8977@red-moon]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Andrew Lunn <andrew@lunn.ch>
Diffstat (limited to 'arch/arm/mach-orion5x')
| -rw-r--r-- | arch/arm/mach-orion5x/common.h | 3 | ||||
| -rw-r--r-- | arch/arm/mach-orion5x/pci.c | 25 |
2 files changed, 19 insertions, 9 deletions
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h index efeffc6b4ebb..4c0c7de665c3 100644 --- a/arch/arm/mach-orion5x/common.h +++ b/arch/arm/mach-orion5x/common.h @@ -54,6 +54,7 @@ void orion5x_restart(enum reboot_mode, const char *); * PCIe/PCI functions. */ struct pci_bus; +struct pci_host_bridge; struct pci_sys_data; struct pci_dev; @@ -61,7 +62,7 @@ void orion5x_pcie_id(u32 *dev, u32 *rev); void orion5x_pci_disable(void); void orion5x_pci_set_cardbus_mode(void); int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys); -struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys); +int orion5x_pci_sys_scan_bus(int nr, struct pci_host_bridge *bridge); int orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin); struct tag; diff --git a/arch/arm/mach-orion5x/pci.c b/arch/arm/mach-orion5x/pci.c index ecb998e7f8dc..76951bfbacf5 100644 --- a/arch/arm/mach-orion5x/pci.c +++ b/arch/arm/mach-orion5x/pci.c @@ -555,18 +555,27 @@ int __init orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys) return 0; } -struct pci_bus __init *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys) +int __init orion5x_pci_sys_scan_bus(int nr, struct pci_host_bridge *bridge) { - if (nr == 0) - return pci_scan_root_bus(NULL, sys->busnr, &pcie_ops, sys, - &sys->resources); + struct pci_sys_data *sys = pci_host_bridge_priv(bridge); - if (nr == 1 && !orion5x_pci_disabled) - return pci_scan_root_bus(NULL, sys->busnr, &pci_ops, sys, - &sys->resources); + list_splice_init(&sys->resources, &bridge->windows); + bridge->dev.parent = NULL; + bridge->sysdata = sys; + bridge->busnr = sys->busnr; + + if (nr == 0) { + bridge->ops = &pcie_ops; + return pci_scan_root_bus_bridge(bridge); + } + + if (nr == 1 && !orion5x_pci_disabled) { + bridge->ops = &pci_ops; + return pci_scan_root_bus_bridge(bridge); + } BUG(); - return NULL; + return -ENODEV; } int __init orion5x_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |