linux-kernel - [PATCH -mm 00/12] adds include/asm-generic/pci-dma-common.h

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Date:	Tue,  9 Feb 2010 22:35:12 +0900
From:	e@....ntt.co.jp
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, fujita.tomonori@....ntt.co.jp,
	x86@...nel.org, Richard Henderson <rth@...ddle.net>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
	Matt Turner <mattst88@...il.com>,
	Russell King <linux@....linux.org.uk>,
	David Howells <dhowells@...hat.com>,
	Tony Luck <tony.luck@...el.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Kyle McMartin <kyle@...artin.ca>, Helge Deller <deller@....de>,
	James Bottomley <James.Bottomley@...e.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	"David S. Miller" <davem@...emloft.net>,
	Chris Zankel <chris@...kel.net>
Subject: [PATCH -mm 00/12] adds include/asm-generic/pci-dma-common.h

This patchset adds include/asm-generic/pci-dma-common.h that defines
the pci_unmap state API:

DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
DECLARE_PCI_UNMAP_LEN(LEN_NAME)
pci_unmap_addr(PTR, ADDR_NAME)
pci_unmap_addr_set(PTR, ADDR_NAME, VAL)
pci_unmap_len(PTR, LEN_NAME)
pci_unmap_len_set(PTR, LEN_NAME, VAL)

This enables us to remove lots of the duplication in architecture
implementations since there are only two ways to define the API.

If architectures define HAVE_ARCH_PCI_UNMAP, they get the real
definition of pci_unmap state API. If not, they get the noop
definition.

In the long term, it's better to replace the API with the generic
device model API such as DECLARE_DMA_UNMAP_ADDR. We can map the API to
the generic one (like dma-mapping-compat.h does). This patch also
makes the migration process easier.

=
 arch/alpha/include/asm/pci.h         |   14 ++------------
 arch/arm/include/asm/pci.h           |    8 ++------
 arch/frv/include/asm/pci.h           |    7 +------
 arch/ia64/include/asm/pci.h          |   14 ++------------
 arch/mips/include/asm/pci.h          |   23 +++--------------------
 arch/parisc/include/asm/pci.h        |   14 ++------------
 arch/powerpc/include/asm/pci.h       |   33 +++------------------------------
 arch/sh/include/asm/pci.h            |   15 ++-------------
 arch/sparc/include/asm/pci.h         |    3 +++
 arch/sparc/include/asm/pci_32.h      |   14 --------------
 arch/sparc/include/asm/pci_64.h      |   14 --------------
 arch/x86/include/asm/pci.h           |   27 ++-------------------------
 arch/xtensa/include/asm/pci.h        |    7 +------
 include/asm-generic/pci-dma-common.h |   20 ++++++++++++++++++++
 14 files changed, 43 insertions(+), 170 deletions(-)



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