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| author | Lu Baolu <baolu.lu@linux.intel.com> | 2024-07-02 21:08:39 +0800 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-07-03 16:39:26 +0100 |
| commit | 3753311c9190f833963fb47336dfe17221d93706 (patch) | |
| tree | 1b00d472a5f858c1634e92661905b2b499ce0cbd /drivers/iommu/intel/iommu.h | |
| parent | f90584f4beb84211c4d21b319cc13f391fe9f3c2 (diff) | |
| download | linux-3753311c9190f833963fb47336dfe17221d93706.tar.gz linux-3753311c9190f833963fb47336dfe17221d93706.tar.bz2 linux-3753311c9190f833963fb47336dfe17221d93706.zip | |
iommu/vt-d: Refactor PCI PRI enabling/disabling callbacks
Commit 0095bf83554f8 ("iommu: Improve iopf_queue_remove_device()")
specified the flow for disabling the PRI on a device. Refactor the
PRI callbacks in the intel iommu driver to better manage PRI
enabling and disabling and align it with the device queue interfaces
in the iommu core.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240701112317.94022-3-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20240702130839.108139-8-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/intel/iommu.h')
| -rw-r--r-- | drivers/iommu/intel/iommu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index 63eb3306c025..b67c14da1240 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -1045,6 +1045,15 @@ static inline void context_set_sm_pre(struct context_entry *context) context->lo |= BIT_ULL(4); } +/* + * Clear the PRE(Page Request Enable) field of a scalable mode context + * entry. + */ +static inline void context_clear_sm_pre(struct context_entry *context) +{ + context->lo &= ~BIT_ULL(4); +} + /* Returns a number of VTD pages, but aligned to MM page size */ static inline unsigned long aligned_nrpages(unsigned long host_addr, size_t size) { |