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iommu/arm-smmu: save the pgtbl_cfg in the domain

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The pgtbl_cfg object has a few handy properties that we'd like to make
use of later (returning the pgd in a domain attribute, for example).
Keep track of the domain pgtbl_cfg in the domain structure.

Change-Id: Icce9638a270ca98d6ed6d61b3ef1c35d42a869dc
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
This commit is contained in:
Mitchel Humpherys 2015-04-15 15:14:15 -07:00 • committed by David Keitel
parent b7d9b48915
commit 7bd641abae
1 changed files with 6 additions and 5 deletions
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11
drivers/iommu/arm-smmu.c
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@ -406,6 +406,7 @@ enum arm_smmu_domain_stage {
struct arm_smmu_domain {
struct arm_smmu_device *smmu;
struct io_pgtable_ops *pgtbl_ops;
struct io_pgtable_cfg pgtbl_cfg;
spinlock_t pgtbl_lock;
struct arm_smmu_cfg cfg;
enum arm_smmu_domain_stage stage;
@ -1093,7 +1094,6 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
int irq, start, ret = 0;
unsigned long ias, oas;
struct io_pgtable_ops *pgtbl_ops;
struct io_pgtable_cfg pgtbl_cfg;
enum io_pgtable_fmt fmt;
struct arm_smmu_domain *smmu_domain = domain->priv;
struct arm_smmu_cfg *cfg = &smmu_domain->cfg;
@ -1168,7 +1168,7 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
cfg->irptndx = cfg->cbndx;
}
pgtbl_cfg = (struct io_pgtable_cfg) {
smmu_domain->pgtbl_cfg = (struct io_pgtable_cfg) {
.pgsize_bitmap = arm_smmu_ops.pgsize_bitmap,
.ias = ias,
.oas = oas,
@ -1176,17 +1176,18 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
};
smmu_domain->smmu = smmu;
pgtbl_ops = alloc_io_pgtable_ops(fmt, &pgtbl_cfg, smmu_domain);
pgtbl_ops = alloc_io_pgtable_ops(fmt, &smmu_domain->pgtbl_cfg,
smmu_domain);
if (!pgtbl_ops) {
ret = -ENOMEM;
goto out_clear_smmu;
}
/* Update our support page sizes to reflect the page table format */
arm_smmu_ops.pgsize_bitmap = pgtbl_cfg.pgsize_bitmap;
arm_smmu_ops.pgsize_bitmap = smmu_domain->pgtbl_cfg.pgsize_bitmap;
/* Initialise the context bank with our page table cfg */
arm_smmu_init_context_bank(smmu_domain, &pgtbl_cfg);
arm_smmu_init_context_bank(smmu_domain, &smmu_domain->pgtbl_cfg);
/*
* Request context fault interrupt. Do this last to avoid the