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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-05 17:49:54 +0000 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-05 17:49:54 +0000 |
commit | 4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6 (patch) | |
tree | 5b8c5656538961ffa67515dde551f470068904cb /drivers/acpi | |
parent | d271ab29230b1d0ceb426f374c221c4eb2c91c64 (diff) | |
parent | e3b5ee0cfb65646f4a915643fe53e0a51829d891 (diff) | |
download | linux-4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6.tar.gz linux-4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6.tar.bz2 linux-4fc2ea6a8608d9a649eff5e3c2ee477eb70f0fb6.zip |
Merge tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
- Allow compiling the ARM-SMMU drivers as modules.
- Fixes and cleanups for the ARM-SMMU drivers and io-pgtable code
collected by Will Deacon. The merge-commit (6855d1ba7537) has all the
details.
- Cleanup of the iommu_put_resv_regions() call-backs in various
drivers.
- AMD IOMMU driver cleanups.
- Update for the x2APIC support in the AMD IOMMU driver.
- Preparation patches for Intel VT-d nested mode support.
- RMRR and identity domain handling fixes for the Intel VT-d driver.
- More small fixes and cleanups.
* tag 'iommu-updates-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (87 commits)
iommu/amd: Remove the unnecessary assignment
iommu/vt-d: Remove unnecessary WARN_ON_ONCE()
iommu/vt-d: Unnecessary to handle default identity domain
iommu/vt-d: Allow devices with RMRRs to use identity domain
iommu/vt-d: Add RMRR base and end addresses sanity check
iommu/vt-d: Mark firmware tainted if RMRR fails sanity check
iommu/amd: Remove unused struct member
iommu/amd: Replace two consecutive readl calls with one readq
iommu/vt-d: Don't reject Host Bridge due to scope mismatch
PCI/ATS: Add PASID stubs
iommu/arm-smmu-v3: Return -EBUSY when trying to re-add a device
iommu/arm-smmu-v3: Improve add_device() error handling
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
iommu/arm-smmu-v3: Add second level of context descriptor table
iommu/arm-smmu-v3: Prepare for handling arm_smmu_write_ctx_desc() failure
iommu/arm-smmu-v3: Propagate ssid_bits
iommu/arm-smmu-v3: Add support for Substream IDs
iommu/arm-smmu-v3: Add context descriptor tables allocators
iommu/arm-smmu-v3: Prepare arm_smmu_s1_cfg for SSID support
ACPI/IORT: Parse SSID property of named component node
...
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/arm64/iort.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 6078064684c6..ed3d2d1a7ae9 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -11,6 +11,7 @@ #define pr_fmt(fmt) "ACPI: IORT: " fmt #include <linux/acpi_iort.h> +#include <linux/bitfield.h> #include <linux/iommu.h> #include <linux/kernel.h> #include <linux/list.h> @@ -902,9 +903,9 @@ static inline bool iort_iommu_driver_enabled(u8 type) { switch (type) { case ACPI_IORT_NODE_SMMU_V3: - return IS_BUILTIN(CONFIG_ARM_SMMU_V3); + return IS_ENABLED(CONFIG_ARM_SMMU_V3); case ACPI_IORT_NODE_SMMU: - return IS_BUILTIN(CONFIG_ARM_SMMU); + return IS_ENABLED(CONFIG_ARM_SMMU); default: pr_warn("IORT node type %u does not describe an SMMU\n", type); return false; @@ -976,6 +977,20 @@ static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) return iort_iommu_xlate(info->dev, parent, streamid); } +static void iort_named_component_init(struct device *dev, + struct acpi_iort_node *node) +{ + struct acpi_iort_named_component *nc; + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + + if (!fwspec) + return; + + nc = (struct acpi_iort_named_component *)node->node_data; + fwspec->num_pasid_bits = FIELD_GET(ACPI_IORT_NC_PASID_BITS, + nc->node_flags); +} + /** * iort_iommu_configure - Set-up IOMMU configuration for a device. * @@ -1030,6 +1045,9 @@ const struct iommu_ops *iort_iommu_configure(struct device *dev) if (parent) err = iort_iommu_xlate(dev, parent, streamid); } while (parent && !err); + + if (!err) + iort_named_component_init(dev, node); } /* |