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authorLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 22:29:26 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-09-12 22:29:26 +0400
commite5d0c874391a500be7643d3eef9fb07171eee129 (patch)
treee584dda865c5628fbb8e59a50096a0f4c21bf2bd /include
parentd5adf7e2db897f9d4a00be59262875ae5d9574f4 (diff)
parentd6a60fc1a8187004792a01643d8af1d06a465026 (diff)
downloadlinux-e5d0c874391a500be7643d3eef9fb07171eee129.tar.xz
Merge tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU Updates from Joerg Roedel: "This round the updates contain: - A new driver for the Freescale PAMU IOMMU from Varun Sethi. This driver has cooked for a while and required changes to the IOMMU-API and infrastructure that were already merged before. - Updates for the ARM-SMMU driver from Will Deacon - Various fixes, the most important one is probably a fix from Alex Williamson for a memory leak in the VT-d page-table freeing code In summary not all that much. The biggest part in the diffstat is the new PAMU driver" * tag 'iommu-updates-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: intel-iommu: Fix leaks in pagetable freeing iommu/amd: Fix resource leak in iommu_init_device() iommu/amd: Clean up unnecessary MSI/MSI-X capability find iommu/arm-smmu: Simplify VMID and ASID allocation iommu/arm-smmu: Don't use VMIDs for stage-1 translations iommu/arm-smmu: Tighten up global fault reporting iommu/arm-smmu: Remove broken big-endian check iommu/fsl: Remove unnecessary 'fsl-pamu' prefixes iommu/fsl: Fix whitespace problems noticed by git-am iommu/fsl: Freescale PAMU driver and iommu implementation. iommu/fsl: Add additional iommu attributes required by the PAMU driver. powerpc: Add iommu domain pointer to device archdata iommu/exynos: Remove dead code (set_prefbuf)
Diffstat (limited to 'include')
-rw-r--r--include/linux/iommu.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 3aeb7305e2f5..7ea319e95b47 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -58,10 +58,26 @@ struct iommu_domain {
#define IOMMU_CAP_CACHE_COHERENCY 0x1
#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
+/*
+ * Following constraints are specifc to FSL_PAMUV1:
+ * -aperture must be power of 2, and naturally aligned
+ * -number of windows must be power of 2, and address space size
+ * of each window is determined by aperture size / # of windows
+ * -the actual size of the mapped region of a window must be power
+ * of 2 starting with 4KB and physical address must be naturally
+ * aligned.
+ * DOMAIN_ATTR_FSL_PAMUV1 corresponds to the above mentioned contraints.
+ * The caller can invoke iommu_domain_get_attr to check if the underlying
+ * iommu implementation supports these constraints.
+ */
+
enum iommu_attr {
DOMAIN_ATTR_GEOMETRY,
DOMAIN_ATTR_PAGING,
DOMAIN_ATTR_WINDOWS,
+ DOMAIN_ATTR_FSL_PAMU_STASH,
+ DOMAIN_ATTR_FSL_PAMU_ENABLE,
+ DOMAIN_ATTR_FSL_PAMUV1,
DOMAIN_ATTR_MAX,
};