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Re: [PATCH v8 04/16] drivers: iommu: make of_iommu_set/get_ops() DT agnostic

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On Wed, Nov 16, 2016 at 03:29:24PM +0000, Lorenzo Pieralisi wrote:
> The of_iommu_{set/get}_ops() API is used to associate a device
> tree node with a specific set of IOMMU operations. The same
> kernel interface is required on systems booting with ACPI, where
> devices are not associated with a device tree node, therefore
> the interface requires generalization.
> 
> The struct device fwnode member represents the fwnode token associated
> with the device and the struct it points at is firmware specific;
> regardless, it is initialized on both ACPI and DT systems and makes an
> ideal candidate to use it to associate a set of IOMMU operations to a
> given device, through its struct device.fwnode member pointer, paving
> the way for representing per-device iommu_ops (ie an iommu instance
> associated with a device).
> 
> Convert the DT specific of_iommu_{set/get}_ops() interface to
> use struct device.fwnode as a look-up token, making the interface
> usable on ACPI systems and rename the data structures and the
> registration API so that they are made to represent their usage
> more clearly.
> 
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Reviewed-by: Robin Murphy <robin.murphy@arm.com>
> Reviewed-by: Tomasz Nowicki <tn@semihalf.com>
> Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
> Tested-by: Tomasz Nowicki <tn@semihalf.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Cc: Hanjun Guo <hanjun.guo@linaro.org>
> Cc: Robin Murphy <robin.murphy@arm.com>
> Cc: Joerg Roedel <joro@8bytes.org>
> ---
>  drivers/iommu/iommu.c    | 40 ++++++++++++++++++++++++++++++++++++++++
>  drivers/iommu/of_iommu.c | 39 ---------------------------------------
>  include/linux/iommu.h    | 14 ++++++++++++++
>  include/linux/of_iommu.h | 12 ++++++++++--
>  4 files changed, 64 insertions(+), 41 deletions(-)

Acked-by: Will Deacon <will.deacon@arm.com>

Will

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[PATCH v8 00/16] ACPI IORT ARM SMMU support Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
  [PATCH v8 11/16] drivers: iommu: arm-smmu-v3: add IORT configuration Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
    Re: [PATCH v8 11/16] drivers: iommu: arm-smmu-v3: add IORT  configuration Will Deacon <will.deacon@arm.com> - 2016-11-18 17:00 +0100
  [PATCH v8 07/16] drivers: acpi: implement acpi_dma_configure Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
  [PATCH v8 08/16] drivers: acpi: iort: add node match function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
  [PATCH v8 01/16] drivers: acpi: add FWNODE_ACPI_STATIC fwnode type Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
  [PATCH v8 06/16] drivers: iommu: arm-smmu-v3: convert struct device of_node to fwnode usage Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
    Re: [PATCH v8 06/16] drivers: iommu: arm-smmu-v3: convert struct  device of_node to fwnode usage Will Deacon <will.deacon@arm.com> - 2016-11-18 16:00 +0100
  [PATCH v8 14/16] drivers: acpi: iort: replace rid map type with type mask Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:30 +0100
  [PATCH v8 04/16] drivers: iommu: make of_iommu_set/get_ops() DT agnostic Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
    Re: [PATCH v8 04/16] drivers: iommu: make of_iommu_set/get_ops() DT  agnostic Will Deacon <will.deacon@arm.com> - 2016-11-18 15:50 +0100
  [PATCH v8 03/16] drivers: acpi: iort: add support for IOMMU fwnode registration Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
  [PATCH v8 16/16] drivers: acpi: iort: introduce iort_iommu_configure Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
  [PATCH v8 09/16] drivers: acpi: iort: add support for ARM SMMU platform devices creation Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
  [PATCH v8 10/16] drivers: iommu: arm-smmu-v3: split probe functions into DT/generic portions Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
    Re: [PATCH v8 10/16] drivers: iommu: arm-smmu-v3: split probe  functions into DT/generic portions Will Deacon <will.deacon@arm.com> - 2016-11-18 16:50 +0100
  [PATCH v8 05/16] drivers: iommu: arm-smmu: convert struct device of_node to fwnode usage Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100
    Re: [PATCH v8 05/16] drivers: iommu: arm-smmu: convert struct device  of_node to fwnode usage Will Deacon <will.deacon@arm.com> - 2016-11-18 16:00 +0100
  [PATCH v8 15/16] drivers: acpi: iort: add single mapping function Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> - 2016-11-16 16:40 +0100

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