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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-05 18:46:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-05 18:46:26 -0700
commit3f583bc21977a608908b83d03ee2250426a5695c (patch)
tree05ddffa3804cda744d9b68796d5f2c9a0ff5e1df /Documentation
parent3e76b749ea09a6411ceb33e6fd47f20eb6df268b (diff)
parente172b81222548b856ecbe59b305d2cb733d512c4 (diff)
downloadlinux-3f583bc21977a608908b83d03ee2250426a5695c.tar.gz
Merge tag 'iommu-updates-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU upates from Joerg Roedel: "This time a few more updates queued up. - Rework VT-d code to support ACPI devices - Improvements for memory and PCI hotplug support in the VT-d driver - Device-tree support for OMAP IOMMU - Convert OMAP IOMMU to use devm_* interfaces - Fixed PASID support for AMD IOMMU - Other random cleanups and fixes for OMAP, ARM-SMMU and SHMOBILE IOMMU Most of the changes are in the VT-d driver because some rework was necessary for better hotplug and ACPI device support" * tag 'iommu-updates-v3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (75 commits) iommu/vt-d: Fix error handling in ANDD processing iommu/vt-d: returning free pointer in get_domain_for_dev() iommu/vt-d: Only call dmar_acpi_dev_scope_init() if DRHD units present iommu/vt-d: Check for NULL pointer in dmar_acpi_dev_scope_init() iommu/amd: Fix logic to determine and checking max PASID iommu/vt-d: Include ACPI devices in iommu=pt iommu/vt-d: Finally enable translation for non-PCI devices iommu/vt-d: Remove to_pci_dev() in intel_map_page() iommu/vt-d: Remove pdev from intel_iommu_attach_device() iommu/vt-d: Remove pdev from iommu_no_mapping() iommu/vt-d: Make domain_add_dev_info() take struct device iommu/vt-d: Make domain_remove_one_dev_info() take struct device iommu/vt-d: Rename 'hwdev' variables to 'dev' now that that's the norm iommu/vt-d: Remove some pointless to_pci_dev() calls iommu/vt-d: Make get_valid_domain_for_dev() take struct device iommu/vt-d: Make iommu_should_identity_map() take struct device iommu/vt-d: Handle RMRRs for non-PCI devices iommu/vt-d: Make get_domain_for_dev() take struct device iommu/vt-d: Make domain_context_mapp{ed,ing}() take struct device iommu/vt-d: Make device_to_iommu() cope with non-PCI devices ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/iommu/arm,smmu.txt6
-rw-r--r--Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt26
2 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index e34c6cdd8ba..f284b99402b 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
@@ -48,6 +48,12 @@ conditions.
from the mmu-masters towards memory) node for this
SMMU.
+- calxeda,smmu-secure-config-access : Enable proper handling of buggy
+ implementations that always use secure access to
+ SMMU configuration registers. In this case non-secure
+ aliases of secure registers have to be used during
+ SMMU configuration.
+
Example:
smmu {
diff --git a/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
new file mode 100644
index 00000000000..42531dc387a
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/ti,omap-iommu.txt
@@ -0,0 +1,26 @@
+OMAP2+ IOMMU
+
+Required properties:
+- compatible : Should be one of,
+ "ti,omap2-iommu" for OMAP2/OMAP3 IOMMU instances
+ "ti,omap4-iommu" for OMAP4/OMAP5 IOMMU instances
+ "ti,dra7-iommu" for DRA7xx IOMMU instances
+- ti,hwmods : Name of the hwmod associated with the IOMMU instance
+- reg : Address space for the configuration registers
+- interrupts : Interrupt specifier for the IOMMU instance
+
+Optional properties:
+- ti,#tlb-entries : Number of entries in the translation look-aside buffer.
+ Should be either 8 or 32 (default: 32)
+- ti,iommu-bus-err-back : Indicates the IOMMU instance supports throwing
+ back a bus error response on MMU faults.
+
+Example:
+ /* OMAP3 ISP MMU */
+ mmu_isp: mmu@480bd400 {
+ compatible = "ti,omap2-iommu";
+ reg = <0x480bd400 0x80>;
+ interrupts = <24>;
+ ti,hwmods = "mmu_isp";
+ ti,#tlb-entries = <8>;
+ };