diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2019-10-25 20:08:36 +0200 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-11-04 20:59:30 +0100 |
| commit | 205577ab6f7ade6185f764ed78fb6875dca40205 (patch) | |
| tree | 3dc33876b1194b7d1cf1a384e7216659a6d95344 | |
| parent | iommu/io-pgtable-arm: Simplify level indexing (diff) | |
| download | linux-205577ab6f7ade6185f764ed78fb6875dca40205.tar.xz linux-205577ab6f7ade6185f764ed78fb6875dca40205.zip | |
iommu/io-pgtable-arm: Rationalise MAIR handling
Between VMSAv8-64 and the various 32-bit formats, there is either one
64-bit MAIR or a pair of 32-bit MAIR0/MAIR1 or NMRR/PMRR registers.
As such, keeping two 64-bit values in io_pgtable_cfg has always been
overkill.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 2 | ||||
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 4 | ||||
| -rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 3 | ||||
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 2 | ||||
| -rw-r--r-- | drivers/iommu/qcom_iommu.c | 4 | ||||
| -rw-r--r-- | include/linux/io-pgtable.h | 2 |
6 files changed, 8 insertions, 9 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 8da93e730d6f..3f20e548f1ec 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -2172,7 +2172,7 @@ static int arm_smmu_domain_finalise_s1(struct arm_smmu_domain *smmu_domain, cfg->cd.asid = (u16)asid; cfg->cd.ttbr = pgtbl_cfg->arm_lpae_s1_cfg.ttbr[0]; cfg->cd.tcr = pgtbl_cfg->arm_lpae_s1_cfg.tcr; - cfg->cd.mair = pgtbl_cfg->arm_lpae_s1_cfg.mair[0]; + cfg->cd.mair = pgtbl_cfg->arm_lpae_s1_cfg.mair; return 0; out_free_asid: diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index a180665ea002..424ebf38cd09 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -552,8 +552,8 @@ static void arm_smmu_init_context_bank(struct arm_smmu_domain *smmu_domain, cb->mair[0] = pgtbl_cfg->arm_v7s_cfg.prrr; cb->mair[1] = pgtbl_cfg->arm_v7s_cfg.nmrr; } else { - cb->mair[0] = pgtbl_cfg->arm_lpae_s1_cfg.mair[0]; - cb->mair[1] = pgtbl_cfg->arm_lpae_s1_cfg.mair[1]; + cb->mair[0] = pgtbl_cfg->arm_lpae_s1_cfg.mair; + cb->mair[1] = pgtbl_cfg->arm_lpae_s1_cfg.mair >> 32; } } } diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index fcb302704053..cd96442af44b 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -861,8 +861,7 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie) (ARM_LPAE_MAIR_ATTR_INC_OWBRWA << ARM_LPAE_MAIR_ATTR_SHIFT(ARM_LPAE_MAIR_ATTR_IDX_INC_OCACHE)); - cfg->arm_lpae_s1_cfg.mair[0] = reg; - cfg->arm_lpae_s1_cfg.mair[1] = 0; + cfg->arm_lpae_s1_cfg.mair = reg; /* Looking good; allocate a pgd */ data->pgd = __arm_lpae_alloc_pages(ARM_LPAE_PGD_SIZE(data), diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 9da8309f7170..e4da6efbda49 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -438,7 +438,7 @@ static void ipmmu_domain_setup_context(struct ipmmu_vmsa_domain *domain) /* MAIR0 */ ipmmu_ctx_write_root(domain, IMMAIR0, - domain->cfg.arm_lpae_s1_cfg.mair[0]); + domain->cfg.arm_lpae_s1_cfg.mair); /* IMBUSCR */ if (domain->mmu->features->setup_imbuscr) diff --git a/drivers/iommu/qcom_iommu.c b/drivers/iommu/qcom_iommu.c index c31e7bc4ccbe..66e9b40e9275 100644 --- a/drivers/iommu/qcom_iommu.c +++ b/drivers/iommu/qcom_iommu.c @@ -284,9 +284,9 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain, /* MAIRs (stage-1 only) */ iommu_writel(ctx, ARM_SMMU_CB_S1_MAIR0, - pgtbl_cfg.arm_lpae_s1_cfg.mair[0]); + pgtbl_cfg.arm_lpae_s1_cfg.mair); iommu_writel(ctx, ARM_SMMU_CB_S1_MAIR1, - pgtbl_cfg.arm_lpae_s1_cfg.mair[1]); + pgtbl_cfg.arm_lpae_s1_cfg.mair >> 32); /* SCTLR */ reg = SCTLR_CFIE | SCTLR_CFRE | SCTLR_AFE | SCTLR_TRE | diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h index ec7a13405f10..ee21eedafe98 100644 --- a/include/linux/io-pgtable.h +++ b/include/linux/io-pgtable.h @@ -102,7 +102,7 @@ struct io_pgtable_cfg { struct { u64 ttbr[2]; u64 tcr; - u64 mair[2]; + u64 mair; } arm_lpae_s1_cfg; struct { |