Add a link to the pointer to the struct device that is attached to a
domain. This makes it easy to get the pointer if it is needed in the
implementation specific code.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/iommu/arm-smmu.c | 6 ++++--
drivers/iommu/arm-smmu.h | 1 +
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 048de2681670..060139452c54 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -668,7 +668,8 @@ static void arm_smmu_write_context_bank(struct arm_smmu_device *smmu, int idx)
}
static int arm_smmu_init_domain_context(struct iommu_domain *domain,
- struct arm_smmu_device *smmu)
+ struct arm_smmu_device *smmu,
+ struct device *dev)
{
int irq, start, ret = 0;
unsigned long ias, oas;
@@ -801,6 +802,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
cfg->asid = cfg->cbndx;
smmu_domain->smmu = smmu;
+ smmu_domain->dev = dev;
pgtbl_cfg = (struct io_pgtable_cfg) {
.pgsize_bitmap = smmu->pgsize_bitmap,
@@ -1190,7 +1192,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
return ret;
/* Ensure that the domain is finalised */
- ret = arm_smmu_init_domain_context(domain, smmu);
+ ret = arm_smmu_init_domain_context(domain, smmu, dev);
if (ret < 0)
goto rpm_put;
diff --git a/drivers/iommu/arm-smmu.h b/drivers/iommu/arm-smmu.h
index 5f2de20e883b..d33cfe26b2f5 100644
--- a/drivers/iommu/arm-smmu.h
+++ b/drivers/iommu/arm-smmu.h
@@ -345,6 +345,7 @@ struct arm_smmu_domain {
struct mutex init_mutex; /* Protects smmu pointer */
spinlock_t cb_lock; /* Serialises ATS1* ops and TLB syncs */
struct iommu_domain domain;
+ struct device *dev; /* Device attached to this domain */
};
static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg)
--
2.17.1
