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From: Murali Karicheri <m-karicheri2@ti.com>
To: <linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-pci@vger.kernel.org>,
	<devicetree@vger.kernel.org>, <iommu@lists.linux-foundation.org>
Cc: Murali Karicheri <m-karicheri2@ti.com>,
	Joerg Roedel <joro@8bytes.org>,
	Grant Likely <grant.likely@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Will Deacon <will.deacon@arm.com>,
	Russell King <linux@arm.linux.org.uk>,
	Arnd Bergmann <arnd@arndb.de>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Subject: [PATCH v4 0/6] PCI: get DMA configuration from parent device
Date: Fri, 23 Jan 2015 17:32:33 -0500	[thread overview]
Message-ID: <1422052359-12384-1-git-send-email-m-karicheri2@ti.com> (raw)

PCI devices on Keystone doesn't have correct dma_pfn_offset set. This patch
add capability to set the dma configuration such as dma-mask, dma_pfn_offset,
and dma ops etc using the information from DT. The prior RFCs and discussions
are available at [1] and [2] below.

[2] : https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg790244.html
[1] : http://www.gossamer-threads.com/lists/linux/kernel/2024591

Change history:
	v4 - moved size adjustments in of_iommu_configure() to a separate patch
	   - consistent node name comment from Rob
	   - patch 6 added for dma_mask adjustment and iommu mapping size
	     limiting.
	v3 - addressed comments to re-use of_dma_configure() for PCI
	   - To help re-use, change of_iommu_configure() function argument
		- Move of_dma_configure to of/device.c
		- Limit the of_iommu_configure to non pci devices
	v2 - update size to coherent_dma_mask + 1 if dma-range info is missing
	   - also check the np for null.
	v1 - updates based on the comments against initial RFC.
	   - Added a helper function to get the OF node of the parent
	   - Added an API in of_pci.c to update DMA configuration of the pci
	     device.

Cc: Joerg Roedel <joro@8bytes.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>

Murali Karicheri (6): 
  of: iommu: add ptr to OF node arg to of_iommu_configure()
  of: move of_dma_configure() to device.c to help re-use
  of: fix size when dma-range is not used
  of/pci: add of_pci_dma_configure() update dma configuration
  PCI: update dma configuration from DT
  arm: dma-mapping: updates to limit dma_mask and iommu mapping size

 arch/arm/mm/dma-mapping.c |   10 +++++++
 drivers/iommu/of_iommu.c  |   10 +++++--
 drivers/of/device.c       |   71 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/of/of_pci.c       |   39 +++++++++++++++++++++++++
 drivers/of/platform.c     |   58 ++----------------------------------
 drivers/pci/probe.c       |    2 ++
 include/linux/of_device.h |    2 ++
 include/linux/of_iommu.h  |    6 ++--
 include/linux/of_pci.h    |   12 ++++++++
 9 files changed, 150 insertions(+), 60 deletions(-)

-- 
1.7.9.5


             reply	other threads:[~2015-01-23 22:34 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23 22:32 Murali Karicheri [this message]
2015-01-23 22:32 ` [PATCH v4 1/6] of: iommu: add ptr to OF node arg to of_iommu_configure() Murali Karicheri
2015-01-25 13:32   ` Laurent Pinchart
2015-01-26 18:49     ` Murali Karicheri
2015-01-28 11:33       ` Will Deacon
2015-01-28 12:23         ` Laurent Pinchart
2015-01-28 12:29           ` Will Deacon
2015-01-28 13:15             ` Laurent Pinchart
2015-01-28 13:32               ` Will Deacon
2015-01-28 15:21                 ` Murali Karicheri
2015-01-28 23:32                 ` Laurent Pinchart
2015-01-29 14:59                   ` Murali Karicheri
2015-01-29 16:49                   ` Rob Herring
2015-01-30  0:24                     ` Laurent Pinchart
2015-01-30 15:23                       ` Murali Karicheri
2015-01-23 22:32 ` [PATCH v4 2/6] of: move of_dma_configure() to device.c to help re-use Murali Karicheri
2015-01-23 22:32 ` [PATCH v4 3/6] of: fix size when dma-range is not used Murali Karicheri
2015-01-27 11:27   ` Robin Murphy
2015-01-27 15:44     ` Murali Karicheri
2015-01-27 18:55     ` Murali Karicheri
2015-01-28 11:05       ` Catalin Marinas
2015-01-28 15:45         ` Rob Herring
2015-01-28 17:23           ` Catalin Marinas
2015-01-28 17:34           ` Murali Karicheri
2015-01-28 15:55         ` Robin Murphy
2015-01-28 17:30           ` Catalin Marinas
2015-01-30 18:06             ` Murali Karicheri
2015-02-02 12:18               ` Catalin Marinas
2015-02-02 16:10                 ` Murali Karicheri
2015-02-05 21:42                 ` Murali Karicheri
2015-02-05 22:44                   ` Catalin Marinas
2015-01-23 22:32 ` [PATCH v4 4/6] of/pci: add of_pci_dma_configure() update dma configuration Murali Karicheri
2015-01-23 23:41   ` Bjorn Helgaas
2015-01-26 23:25     ` Murali Karicheri
2015-01-26 23:59       ` Bjorn Helgaas
2015-01-27 18:14         ` Murali Karicheri
2015-01-27 18:42           ` Bjorn Helgaas
2015-01-27 18:45             ` Murali Karicheri
2015-01-23 22:32 ` [PATCH v4 5/6] PCI: update dma configuration from DT Murali Karicheri
2015-01-23 23:27   ` Bjorn Helgaas
2015-01-26 23:28     ` Murali Karicheri
2015-01-23 22:32 ` [PATCH v4 6/6] arm: dma-mapping: updates to limit dma_mask and iommu mapping size Murali Karicheri
2015-01-27 11:12   ` Robin Murphy
2015-01-27 11:34     ` Catalin Marinas
2015-01-27 15:19       ` Murali Karicheri

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