diff options
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 2717c2b211d2..17231374eda6 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -542,16 +542,21 @@ struct arm_smmu_strtab_l1_desc { dma_addr_t l2ptr_dma; }; +struct arm_smmu_ctx_desc { + u16 asid; + u64 ttbr; + u64 tcr; + u64 mair; +}; + +struct arm_smmu_ctx_desc_cfg { + __le64 *cdtab; + dma_addr_t cdtab_dma; +}; + struct arm_smmu_s1_cfg { - __le64 *cdptr; - dma_addr_t cdptr_dma; - - struct arm_smmu_ctx_desc { - u16 asid; - u64 ttbr; - u64 tcr; - u64 mair; - } cd; + struct arm_smmu_ctx_desc_cfg cdcfg; + struct arm_smmu_ctx_desc cd; }; struct arm_smmu_s2_cfg { @@ -1444,6 +1449,7 @@ static void arm_smmu_write_ctx_desc(struct arm_smmu_device *smmu, struct arm_smmu_s1_cfg *cfg) { u64 val; + __le64 *cdptr = cfg->cdcfg.cdtab; /* * We don't need to issue any invalidation here, as we'll invalidate @@ -1461,12 +1467,12 @@ static void arm_smmu_write_ctx_desc(struct arm_smmu_device *smmu, if (smmu->features & ARM_SMMU_FEAT_STALL_FORCE) val |= CTXDESC_CD_0_S; - cfg->cdptr[0] = cpu_to_le64(val); + cdptr[0] = cpu_to_le64(val); val = cfg->cd.ttbr & CTXDESC_CD_1_TTB0_MASK; - cfg->cdptr[1] = cpu_to_le64(val); + cdptr[1] = cpu_to_le64(val); - cfg->cdptr[3] = cpu_to_le64(cfg->cd.mair); + cdptr[3] = cpu_to_le64(cfg->cd.mair); } /* Stream table manipulation functions */ @@ -1597,7 +1603,7 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_master *master, u32 sid, !(smmu->features & ARM_SMMU_FEAT_STALL_FORCE)) dst[1] |= cpu_to_le64(STRTAB_STE_1_S1STALLD); - val |= (s1_cfg->cdptr_dma & STRTAB_STE_0_S1CTXPTR_MASK) | + val |= (s1_cfg->cdcfg.cdtab_dma & STRTAB_STE_0_S1CTXPTR_MASK) | FIELD_PREP(STRTAB_STE_0_CFG, STRTAB_STE_0_CFG_S1_TRANS); } @@ -2111,11 +2117,11 @@ static void arm_smmu_domain_free(struct iommu_domain *domain) if (smmu_domain->stage == ARM_SMMU_DOMAIN_S1) { struct arm_smmu_s1_cfg *cfg = &smmu_domain->s1_cfg; - if (cfg->cdptr) { + if (cfg->cdcfg.cdtab) { dmam_free_coherent(smmu_domain->smmu->dev, CTXDESC_CD_DWORDS << 3, - cfg->cdptr, - cfg->cdptr_dma); + cfg->cdcfg.cdtab, + cfg->cdcfg.cdtab_dma); arm_smmu_bitmap_free(smmu->asid_map, cfg->cd.asid); } @@ -2141,9 +2147,11 @@ static int arm_smmu_domain_finalise_s1(struct arm_smmu_domain *smmu_domain, if (asid < 0) return asid; - cfg->cdptr = dmam_alloc_coherent(smmu->dev, CTXDESC_CD_DWORDS << 3, - &cfg->cdptr_dma, GFP_KERNEL); - if (!cfg->cdptr) { + cfg->cdcfg.cdtab = dmam_alloc_coherent(smmu->dev, + CTXDESC_CD_DWORDS << 3, + &cfg->cdcfg.cdtab_dma, + GFP_KERNEL); + if (!cfg->cdcfg.cdtab) { dev_warn(smmu->dev, "failed to allocate context descriptor\n"); ret = -ENOMEM; goto out_free_asid; |