Re: [PATCH 03/25] [POWERPC] Add the ability to find PCI capabilities early on

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Mon, 2007-07-23 at 15:49 -0500, Kumar Gala wrote:
> Added early_find_capability that wraps pci_bus_find_capability and uses
> fake_pci_bus() to allow us to call it before we've fully setup the
> pci_controller.
> 
> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

I want to try to get rid of the early stuff at one point, but that will
not happen before some major rework of powerpc PCI code so for now,
that's good to go.

Ben.

> ---
>  arch/powerpc/kernel/pci_32.c     |    7 +++++++
>  include/asm-powerpc/pci-bridge.h |    3 +++
>  2 files changed, 10 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
> index 0adf077..bfcfa14 100644
> --- a/arch/powerpc/kernel/pci_32.c
> +++ b/arch/powerpc/kernel/pci_32.c
> @@ -1468,3 +1468,10 @@ EARLY_PCI_OP(read, dword, u32 *)
>  EARLY_PCI_OP(write, byte, u8)
>  EARLY_PCI_OP(write, word, u16)
>  EARLY_PCI_OP(write, dword, u32)
> +
> +extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
> +int early_find_capability(struct pci_controller *hose, int bus, int devfn,
> +			  int cap)
> +{
> +	return pci_bus_find_capability(fake_pci_bus(hose, bus), devfn, cap);
> +}
> diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h
> index e72c2a6..7a00b8e 100644
> --- a/include/asm-powerpc/pci-bridge.h
> +++ b/include/asm-powerpc/pci-bridge.h
> @@ -79,6 +79,9 @@ int early_write_config_word(struct pci_controller *hose, int bus, int dev_fn,
>  int early_write_config_dword(struct pci_controller *hose, int bus, int dev_fn,
>  			     int where, u32 val);
>  
> +extern int early_find_capability(struct pci_controller *hose, int bus,
> +				 int dev_fn, int cap);
> +
>  extern void setup_indirect_pci_nomap(struct pci_controller* hose,
>  			       void __iomem *cfg_addr, void __iomem *cfg_data);
>  extern void setup_indirect_pci(struct pci_controller* hose,