diff options
| author | Michael Shavit <mshavit@google.com> | 2023-09-15 21:17:36 +0800 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-10-12 17:08:17 +0100 |
| commit | 24503148c545f08c10de73cc3a3779f1ee7a8fa0 (patch) | |
| tree | 3f45d50401d4a0b3528108acbbd03354aaac31ca /drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | |
| parent | 1228cc509fc6bf7b10f0c5e202086979e4bbd43a (diff) | |
iommu/arm-smmu-v3: Refactor write_ctx_desc
Update arm_smmu_write_ctx_desc and downstream functions to operate on
a master instead of an smmu domain. We expect arm_smmu_write_ctx_desc()
to only be called to write a CD entry into a CD table owned by the
master. Under the hood, arm_smmu_write_ctx_desc still fetches the CD
table from the domain that is attached to the master, but a subsequent
commit will move that table's ownership to the master.
Note that this change isn't a nop refactor since SVA will call
arm_smmu_write_ctx_desc in a loop for every master the domain is
attached to despite the fact that they all share the same CD table. This
loop may look weird but becomes necessary when the CD table becomes
per-master in a subsequent commit.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Michael Shavit <mshavit@google.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/20230915211705.v8.5.I219054a6cf538df5bb22f4ada2d9933155d6058c@changeid
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h index 287bef2d16aa..d2fc0a9793e5 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -745,7 +745,7 @@ extern struct xarray arm_smmu_asid_xa; extern struct mutex arm_smmu_asid_lock; extern struct arm_smmu_ctx_desc quiet_cd; -int arm_smmu_write_ctx_desc(struct arm_smmu_domain *smmu_domain, int ssid, +int arm_smmu_write_ctx_desc(struct arm_smmu_master *smmu_master, int ssid, struct arm_smmu_ctx_desc *cd); void arm_smmu_tlb_inv_asid(struct arm_smmu_device *smmu, u16 asid); void arm_smmu_tlb_inv_range_asid(unsigned long iova, size_t size, int asid, |