diff options
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index 2ae4da4dea5e..983b08477e64 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -104,6 +104,10 @@ #define ARM_LPAE_TCR_TG0_64K 1 #define ARM_LPAE_TCR_TG0_16K 2 +#define ARM_LPAE_TCR_TG1_16K 1 +#define ARM_LPAE_TCR_TG1_4K 2 +#define ARM_LPAE_TCR_TG1_64K 3 + #define ARM_LPAE_TCR_SH_NS 0 #define ARM_LPAE_TCR_SH_OS 2 #define ARM_LPAE_TCR_SH_IS 3 @@ -464,6 +468,7 @@ static int arm_lpae_map(struct io_pgtable_ops *ops, unsigned long iova, arm_lpae_iopte *ptep = data->pgd; int ret, lvl = data->start_level; arm_lpae_iopte prot; + long iaext = (long)iova >> cfg->ias; /* If no access, then nothing to do */ if (!(iommu_prot & (IOMMU_READ | IOMMU_WRITE))) @@ -472,7 +477,9 @@ static int arm_lpae_map(struct io_pgtable_ops *ops, unsigned long iova, if (WARN_ON(!size || (size & cfg->pgsize_bitmap) != size)) return -EINVAL; - if (WARN_ON(iova >> data->iop.cfg.ias || paddr >> data->iop.cfg.oas)) + if (cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1) + iaext = ~iaext; + if (WARN_ON(iaext || paddr >> cfg->oas)) return -ERANGE; prot = arm_lpae_prot_to_pte(data, iommu_prot); @@ -638,11 +645,14 @@ static size_t arm_lpae_unmap(struct io_pgtable_ops *ops, unsigned long iova, struct arm_lpae_io_pgtable *data = io_pgtable_ops_to_data(ops); struct io_pgtable_cfg *cfg = &data->iop.cfg; arm_lpae_iopte *ptep = data->pgd; + long iaext = (long)iova >> cfg->ias; if (WARN_ON(!size || (size & cfg->pgsize_bitmap) != size)) return 0; - if (WARN_ON(iova >> data->iop.cfg.ias)) + if (cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1) + iaext = ~iaext; + if (WARN_ON(iaext)) return 0; return __arm_lpae_unmap(data, gather, iova, size, data->start_level, ptep); @@ -778,9 +788,11 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie) u64 reg; struct arm_lpae_io_pgtable *data; typeof(&cfg->arm_lpae_s1_cfg.tcr) tcr = &cfg->arm_lpae_s1_cfg.tcr; + bool tg1; if (cfg->quirks & ~(IO_PGTABLE_QUIRK_ARM_NS | - IO_PGTABLE_QUIRK_NON_STRICT)) + IO_PGTABLE_QUIRK_NON_STRICT | + IO_PGTABLE_QUIRK_ARM_TTBR1)) return NULL; data = arm_lpae_alloc_pgtable(cfg); @@ -798,15 +810,16 @@ arm_64_lpae_alloc_pgtable_s1(struct io_pgtable_cfg *cfg, void *cookie) tcr->orgn = ARM_LPAE_TCR_RGN_NC; } + tg1 = cfg->quirks & IO_PGTABLE_QUIRK_ARM_TTBR1; switch (ARM_LPAE_GRANULE(data)) { case SZ_4K: - tcr->tg = ARM_LPAE_TCR_TG0_4K; + tcr->tg = tg1 ? ARM_LPAE_TCR_TG1_4K : ARM_LPAE_TCR_TG0_4K; break; case SZ_16K: - tcr->tg = ARM_LPAE_TCR_TG0_16K; + tcr->tg = tg1 ? ARM_LPAE_TCR_TG1_16K : ARM_LPAE_TCR_TG0_16K; break; case SZ_64K: - tcr->tg = ARM_LPAE_TCR_TG0_64K; + tcr->tg = tg1 ? ARM_LPAE_TCR_TG1_64K : ARM_LPAE_TCR_TG0_64K; break; } |