linux-kernel - Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements explicit

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Date:	Fri, 28 Aug 2015 19:13:08 -0700
From:	Randy Dunlap <rdunlap@...radead.org>
To:	"Luis R. Rodriguez" <mcgrof@...not-panic.com>, arnd@...db.de,
	linux-arch@...r.kernel.org
Cc:	mingo@...nel.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, linux-s390@...r.kernel.org, bp@...e.de,
	linux@...ck-us.net, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, rostedt@...dmis.org,
	"Luis R. Rodriguez" <mcgrof@...e.com>
Subject: Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements
 explicit

On 08/28/15 17:17, Luis R. Rodriguez wrote:
> 
>  arch/s390/Kconfig                 |  8 +++++
>  arch/s390/include/asm/io.h        | 11 -------
>  arch/s390/include/asm/pci.h       |  2 --
>  arch/s390/include/asm/pci_iomap.h | 33 +++++++++++++++++++++
>  arch/s390/pci/pci.c               |  2 ++
>  include/asm-generic/io.h          | 12 --------
>  include/asm-generic/iomap.h       | 10 -------
>  include/asm-generic/pci_iomap.h   | 62 +++++++++++++++++++++++++++++++++++----
>  lib/Kconfig                       |  1 +
>  lib/pci_iomap.c                   |  5 ++++
>  10 files changed, 105 insertions(+), 41 deletions(-)
>  create mode 100644 arch/s390/include/asm/pci_iomap.h
> 
> diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
> index 1d57000b1b24..1217b7db4265 100644
> --- a/arch/s390/Kconfig
> +++ b/arch/s390/Kconfig
> @@ -614,6 +614,14 @@ endif	# PCI
>  config PCI_DOMAINS
>  	def_bool PCI
>  
> +config ARCH_PCI_NON_DISJUNCTIVE
> +	def_bool PCI
> +	help
> +	  On the S390 architecture PCI BAR spaces are not disjunctive, as such

	are not disjoint?  may be overlapping?

> +	  the PCI bar is required on a series of otherwise asm generic PCI
> +	  routines, as such S390 requires itw own implemention for these

	                                  its own implementation

> +	  routines.
> +
>  config HAS_IOMEM
>  	def_bool PCI
>  


-- 
~Randy
--
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