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aa16bea929
linux/drivers/iommu
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Alexey Kardashevskiy aa16bea929 iommu: Add a function to find an iommu group by id 
As IOMMU groups are exposed to the user space by their numbers,
the user space can use them in various kernel APIs so the kernel
might need an API to find a group by its ID.

As an example, QEMU VFIO on PPC64 platform needs it to associate
a logical bus number (LIOBN) with a specific IOMMU group in order
to support in-kernel handling of DMA map/unmap requests.

The patch adds the iommu_group_get_by_id(id) function which performs
such search.

v2: fixed reference counting.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
2013-04-24 19:56:51 +02:00
..
amd_iommu_init.c amd_iommu_init: remove __init from amd_iommu_erratum_746_workaround 2013-03-09 18:54:28 +01:00
amd_iommu_proto.h iommu/amd: Add initialization routines for AMD interrupt remapping 2012-09-28 17:43:52 +02:00
amd_iommu_types.h iommu/amd: Properly account for virtual aliases in IOMMU groups 2012-10-24 17:30:22 +02:00
amd_iommu_v2.c IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
amd_iommu.c iommu: Move swap_pci_ref function to drivers/iommu/pci.h. 2013-04-23 14:55:00 +02:00
dmar.c iommu, x86: Add DMA remap fault reason 2013-03-06 09:41:51 +01:00
exynos-iommu.c iommu/exynos: Make exynos_sysmmu_disable static 2013-02-07 21:53:29 +01:00
intel_irq_remapping.c x86/intel/irq_remapping: Clean up x2apic opt-out security warning mess 2013-02-03 12:13:48 +01:00
intel-iommu.c iommu: Move swap_pci_ref function to drivers/iommu/pci.h. 2013-04-23 14:55:00 +02:00
iommu.c iommu: Add a function to find an iommu group by id 2013-04-24 19:56:51 +02:00
iova.c
irq_remapping.c x86, io_apic: remove duplicated include from irq_remapping.c 2013-03-26 15:32:06 +01:00
irq_remapping.h x86, irq: Move irq_remapping_enabled declaration to iommu code 2013-01-28 12:17:26 +01:00
Kconfig iommu: OMAP: build only on OMAP2+ 2013-03-09 18:54:34 +01:00
Makefile iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
msm_iommu_dev.c
msm_iommu.c
of_iommu.c
omap-iommu2.c iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iommu-debug.c ARM: OMAP2+: Move iommu/iovmm headers to platform_data 2012-11-20 10:05:01 -08:00
omap-iommu.c iommu/omap: Remove unnecessary null pointer check 2013-01-28 15:21:27 +01:00
omap-iommu.h iommu/omap: Adapt to runtime pm 2012-12-03 18:48:23 +01:00
omap-iopgtable.h ARM: OMAP2+: Move iommu2 to drivers/iommu/omap-iommu2.c 2012-11-20 10:04:41 -08:00
omap-iovmm.c ARM: OMAP2+: Move iommu/iovmm headers to platform_data 2012-11-20 10:05:01 -08:00
pci.h iommu: Move swap_pci_ref function to drivers/iommu/pci.h. 2013-04-23 14:55:00 +02:00
shmobile-iommu.c iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
shmobile-ipmmu.c iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
shmobile-ipmmu.h iommu/shmobile: Add iommu driver for Renesas IPMMU modules 2013-02-06 10:57:25 +01:00
tegra-gart.c iommu/tegra: assume CONFIG_OF in gart driver 2013-02-19 15:44:41 +01:00
tegra-smmu.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00