Re: [PATCH v5 4/4] asm-generic: Add new pci.h and use it

[Bjorn Helgaas]

On Thu, Jul 21, 2022 at 10:49:24PM +0900, Stafford Horne wrote:
> The asm/pci.h used for many newer architectures share similar
> definitions.  Move the common parts to asm-generic/pci.h to allow for
> sharing code.
> 
> Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
> Link: https://lore.kernel.org/lkml/CAK8P3a0JmPeczfmMBE__vn=Jbvf=nkbpVaZCycyv40pZNCJJXQ@xxxxxxxxxxxxxx/
> Acked-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> Acked-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Stafford Horne <shorne@xxxxxxxxx>
> ---
> Since v4:
>  - Add reviewed-by
> 
>  arch/arm64/include/asm/pci.h | 10 ++--------
>  arch/csky/include/asm/pci.h  | 17 ++---------------
>  arch/riscv/include/asm/pci.h | 23 ++++-------------------
>  arch/um/include/asm/pci.h    | 14 ++------------
>  include/asm-generic/pci.h    | 32 ++++++++++++++++++++++++++++++++
>  5 files changed, 42 insertions(+), 54 deletions(-)
>  create mode 100644 include/asm-generic/pci.h

> +++ b/include/asm-generic/pci.h
> @@ -0,0 +1,32 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +
> +#ifndef __ASM_GENERIC_PCI_H
> +#define __ASM_GENERIC_PCI_H
> +
> +#include <linux/types.h>

Do we need <linux/types.h> here?  I don't see anything below that
depends on it.

> +#ifndef PCIBIOS_MIN_IO
> +#define PCIBIOS_MIN_IO		0
> +#endif
> +
> +#ifndef PCIBIOS_MIN_MEM
> +#define PCIBIOS_MIN_MEM		0
> +#endif
> +
> +#ifndef pcibios_assign_all_busses
> +/* For bootloaders that do not initialize the PCI bus */
> +#define pcibios_assign_all_busses() 1
> +#endif
> +
> +/* Enable generic resource mapping code in drivers/pci/ */
> +#define ARCH_GENERIC_PCI_MMAP_RESOURCE
> +
> +#ifdef CONFIG_PCI_DOMAINS
> +static inline int pci_proc_domain(struct pci_bus *bus)
> +{
> +	/* always show the domain in /proc */
> +	return 1;
> +}
> +#endif /* CONFIG_PCI_DOMAINS */
> +
> +#endif /* __ASM_GENERIC_PCI_H */
> -- 
> 2.36.1
> 
> 
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