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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-31 09:56:54 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-05-31 09:56:54 -0700 |
commit | e1cbc3b96a9974746b2a80c3a6c8a0f7eff7b1b5 (patch) | |
tree | 83c969a9dc2ba9c0dda2f9d04369b5f8c0563521 /drivers/pci/pci-driver.c | |
parent | 3335d5550256210c9b213f67240221633d8f7b53 (diff) | |
parent | b0dacee202efbf1a5d9f5cdfd82049e8b5b085d2 (diff) | |
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Merge tag 'iommu-updates-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
- Intel VT-d driver updates:
- Domain force snooping improvement.
- Cleanups, no intentional functional changes.
- ARM SMMU driver updates:
- Add new Qualcomm device-tree compatible strings
- Add new Nvidia device-tree compatible string for Tegra234
- Fix UAF in SMMUv3 shared virtual addressing code
- Force identity-mapped domains for users of ye olde SMMU legacy
binding
- Minor cleanups
- Fix a BUG_ON in the vfio_iommu_group_notifier:
- Groundwork for upcoming iommufd framework
- Introduction of DMA ownership so that an entire IOMMU group is
either controlled by the kernel or by user-space
- MT8195 and MT8186 support in the Mediatek IOMMU driver
- Make forcing of cache-coherent DMA more coherent between IOMMU
drivers
- Fixes for thunderbolt device DMA protection
- Various smaller fixes and cleanups
* tag 'iommu-updates-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (88 commits)
iommu/amd: Increase timeout waiting for GA log enablement
iommu/s390: Tolerate repeat attach_dev calls
iommu/vt-d: Remove hard coding PGSNP bit in PASID entries
iommu/vt-d: Remove domain_update_iommu_snooping()
iommu/vt-d: Check domain force_snooping against attached devices
iommu/vt-d: Block force-snoop domain attaching if no SC support
iommu/vt-d: Size Page Request Queue to avoid overflow condition
iommu/vt-d: Fold dmar_insert_one_dev_info() into its caller
iommu/vt-d: Change return type of dmar_insert_one_dev_info()
iommu/vt-d: Remove unneeded validity check on dev
iommu/dma: Explicitly sort PCI DMA windows
iommu/dma: Fix iova map result check bug
iommu/mediatek: Fix NULL pointer dereference when printing dev_name
iommu: iommu_group_claim_dma_owner() must always assign a domain
iommu/arm-smmu: Force identity domains for legacy binding
iommu/arm-smmu: Support Tegra234 SMMU
dt-bindings: arm-smmu: Add compatible for Tegra234 SOC
dt-bindings: arm-smmu: Document nvidia,memory-controller property
iommu/arm-smmu-qcom: Add SC8280XP support
dt-bindings: arm-smmu: Add compatible for Qualcomm SC8280XP
...
Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r-- | drivers/pci/pci-driver.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 2f3b69adfc9e..49238ddd39ee 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -20,6 +20,7 @@ #include <linux/of_device.h> #include <linux/acpi.h> #include <linux/dma-map-ops.h> +#include <linux/iommu.h> #include "pci.h" #include "pcie/portdrv.h" @@ -1620,6 +1621,7 @@ static int pci_bus_num_vf(struct device *dev) */ static int pci_dma_configure(struct device *dev) { + struct pci_driver *driver = to_pci_driver(dev->driver); struct device *bridge; int ret = 0; @@ -1635,9 +1637,24 @@ static int pci_dma_configure(struct device *dev) } pci_put_host_bridge_device(bridge); + + if (!ret && !driver->driver_managed_dma) { + ret = iommu_device_use_default_domain(dev); + if (ret) + arch_teardown_dma_ops(dev); + } + return ret; } +static void pci_dma_cleanup(struct device *dev) +{ + struct pci_driver *driver = to_pci_driver(dev->driver); + + if (!driver->driver_managed_dma) + iommu_device_unuse_default_domain(dev); +} + struct bus_type pci_bus_type = { .name = "pci", .match = pci_bus_match, @@ -1651,6 +1668,7 @@ struct bus_type pci_bus_type = { .pm = PCI_PM_OPS_PTR, .num_vf = pci_bus_num_vf, .dma_configure = pci_dma_configure, + .dma_cleanup = pci_dma_cleanup, }; EXPORT_SYMBOL(pci_bus_type); |