Add support for Substream ID and PASIDs to the SMMUv3 driver.
Changes since v2 [1]:
* Split preparatory work into patches 5, 6, 8 and 9.
* Added patch 1. Not strictly relevant, but since we're moving the DMA
allocations and adding a new one, we might as well clean the flags
first.
* Fixed a double free reported by Jonathan, and other small
issues.
* Added patch 12. Upstream commit c6e9aefbf9db ("PCI/ATS: Remove unused
PRI and PASID stubs") removed the unused PASID stubs. Since the SMMU
driver can be built without PCI, the stubs are now needed.
[1] https://lore.kernel.org/linux-iommu/20191108152508.4039168-1-jean-philippe@xxxxxxxxxx/
Jean-Philippe Brucker (13):
iommu/arm-smmu-v3: Drop __GFP_ZERO flag from DMA allocation
dt-bindings: document PASID property for IOMMU masters
iommu/arm-smmu-v3: Support platform SSID
ACPI/IORT: Support PASID for platform devices
iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support
iommu/arm-smmu-v3: Add context descriptor tables allocators
iommu/arm-smmu-v3: Add support for Substream IDs
iommu/arm-smmu-v3: Propate ssid_bits
iommu/arm-smmu-v3: Handle failure of arm_smmu_write_ctx_desc()
iommu/arm-smmu-v3: Add second level of context descriptor table
iommu/arm-smmu-v3: Improve add_device() error handling
PCI/ATS: Add PASID stubs
iommu/arm-smmu-v3: Add support for PCI PASID
.../devicetree/bindings/iommu/iommu.txt | 6 +
drivers/acpi/arm64/iort.c | 18 +
drivers/iommu/arm-smmu-v3.c | 462 +++++++++++++++---
drivers/iommu/of_iommu.c | 6 +-
include/linux/iommu.h | 2 +
include/linux/pci-ats.h | 3 +
6 files changed, 437 insertions(+), 60 deletions(-)
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2.24.0
