On Wed, 2009-08-26 at 00:07 -0600, Grant Likely wrote:
> From: Grant Likely
>
> The two versions are doing almost exactly the same thing. No need to
> maintain them as separate files. This patch also has the side effect
> of making the PCI device tree scanning code available to 32 bit powerpc
> machines, but no board ports actually make use of this feature at this
> point.
You missed various calls to scan_phb() in arch/powerpc :-)
At least pSeries with dynamic LPAR is broken, I think iSeries might
break too. Try a ppc64_defconfig.
I tentatively applied the other patches to -test
Cheers,
Ben.
> Signed-off-by: Grant Likely
> ---
>
> arch/powerpc/include/asm/pci.h |2 ++
> arch/powerpc/kernel/pci-common.c | 48
> ++
> arch/powerpc/kernel/pci_32.c | 25 ++--
> arch/powerpc/kernel/pci_64.c | 46 +---
> 4 files changed, 58 insertions(+), 63 deletions(-)
>
>
> diff --git a/arch/powerpc/include/asm/pci.h b/arch/powerpc/include/asm/pci.h
> index 9ae2e3e..feebfed 100644
> --- a/arch/powerpc/include/asm/pci.h
> +++ b/arch/powerpc/include/asm/pci.h
> @@ -233,6 +233,8 @@ extern void pci_resource_to_user(const struct pci_dev
> *dev, int bar,
>
> extern void pcibios_setup_bus_devices(struct pci_bus *bus);
> extern void pcibios_setup_bus_self(struct pci_bus *bus);
> +extern void pcibios_setup_phb_io_space(struct pci_controller *hose);
> +extern void pcibios_scan_phb(struct pci_controller *hose, void *data);
>
> #endif /* __KERNEL__ */
> #endif /* __ASM_POWERPC_PCI_H */
> diff --git a/arch/powerpc/kernel/pci-common.c
> b/arch/powerpc/kernel/pci-common.c
> index 44497a8..8a16dbe 100644
> --- a/arch/powerpc/kernel/pci-common.c
> +++ b/arch/powerpc/kernel/pci-common.c
> @@ -1617,3 +1617,51 @@ void __devinit pcibios_setup_phb_resources(struct
> pci_controller *hose)
>(unsigned long)hose->io_base_virt - _IO_BASE);
>
> }
> +
> +/**
> + * pci_scan_phb - Given a pci_controller, setup and scan the PCI bus
> + * @hose: Pointer to the PCI host controller instance structure
> + * @data: value to use for sysdata pointer. ppc32 and ppc64 differ here
> + *
> + * Note: the 'data' pointer is a temporary measure. As 32 and 64 bit
> + * pci code gets merged, this parameter should become unnecessary because
> + * both will use the same value.
> + */
> +void __devinit pcibios_scan_phb(struct pci_controller *hose, void *data)
> +{
> + struct pci_bus *bus;
> + struct device_node *node = hose->dn;
> + int mode;
> +
> + pr_debug("PCI: Scanning PHB %s\n",
> + node ? node->full_name : "");
> +
> + /* Create an empty bus for the toplevel */
> + bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, data);
> + if (bus == NULL) {
> + pr_err("Failed to create bus for PCI domain %04x\n",
> + hose->global_number);
> + return;
> + }
> + bus->secondary = hose->first_busno;
> + hose->bus = bus;
> +
> + /* Get some IO space for the new PHB */
> + pcibios_setup_phb_io_space(hose);
> +
> + /* Wire up PHB bus resources */
> + pcibios_setup_phb_resources(hose);
> +
> + /* Get probe mode and perform scan */
> + mode = PCI_PROBE_NORMAL;
> + if (node && ppc_md.pci_probe_mode)
> + mode = ppc_md.pci_probe_mode(bus);
> + pr_debug("probe mode: %d\n", mode);
> + if (mode == PCI_PROBE_DEVTREE) {
> + bus->subordinate = hose->last_busno;
> + of_scan_bus(node, bus);
> + }
> +
> + if (mode == PCI_PROBE_NORMAL)
> + hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
> +}
> diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
> index 1e807fe..4e415e1 100644
> --- a/arch/powerpc/kernel/pci_32.c
> +++ b/arch/powerpc/kernel/pci_32.c
> @@ -354,36 +354,15 @@ pci_create_OF_bus_map(void)
> }
> }
>
> -static void __devinit pcibios_scan_phb(struct pci_controller *hose)
> +void __devinit pcibios_setup_phb_io_space(struct pci_controller *hose)
> {
> - struct pci_bus *bus;
> - struct device_node *node = hose->dn;
> unsigned long io_offset;
> struct resource *res = &hose->io_resource;
>
> - pr_debug("PCI: Scanning PHB %s\n",
> - node ? node->full_name : "");
> -
> - /* Create an empty bus for the toplevel */
> - bus = pci_create_bus(hose->parent, hose->first_busno, hose->ops, hose);
> - if (bus == NULL) {
> - printk(KERN_ERR "Failed to create bus for PCI domain %04x\n",
> -hose->global_number);
> - return;
> - }
> - bus->secondary = hose->first_busno;
> - hose->bus = bus;
> -
> /* Fixup IO space offset */
> io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
> res->start = (res->start + io_offset) & 0xu;
> res->end = (res->end + io_offset) & 0x
