diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2018-03-26 14:35:14 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-27 15:12:06 +0200 |
| commit | 6619c9138533597dc0ff52155d263f14e8578ca2 (patch) | |
| tree | dc5c5dad0a9696b3e0c0ae8a4e2811a3e62859c0 /drivers/iommu | |
| parent | iommu/io-pgtable-arm: Support 52-bit physical address (diff) | |
| download | linux-6619c9138533597dc0ff52155d263f14e8578ca2.tar.xz linux-6619c9138533597dc0ff52155d263f14e8578ca2.zip | |
iommu/arm-smmu-v3: Support 52-bit physical address
Implement SMMUv3.1 support for 52-bit physical addresses. Since a 52-bit
OAS implies 64KB translation granule support, permitting level 1 block
entries there is simple, and the rest is just extending address fields.
Tested-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/arm-smmu-v3.c | 35 |
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index ae6049bddd73..b73a5950eb65 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -91,6 +91,7 @@ #define IDR5_OAS_42_BIT 3 #define IDR5_OAS_44_BIT 4 #define IDR5_OAS_48_BIT 5 +#define IDR5_OAS_52_BIT 6 #define ARM_SMMU_CR0 0x20 #define CR0_CMDQEN (1 << 3) @@ -147,7 +148,7 @@ #define ARM_SMMU_STRTAB_BASE 0x80 #define STRTAB_BASE_RA (1UL << 62) -#define STRTAB_BASE_ADDR_MASK GENMASK_ULL(47, 6) +#define STRTAB_BASE_ADDR_MASK GENMASK_ULL(51, 6) #define ARM_SMMU_STRTAB_BASE_CFG 0x88 #define STRTAB_BASE_CFG_FMT GENMASK(17, 16) @@ -175,7 +176,7 @@ #define ARM_SMMU_PRIQ_IRQ_CFG2 0xdc /* Common MSI config fields */ -#define MSI_CFG0_ADDR_MASK GENMASK_ULL(47, 2) +#define MSI_CFG0_ADDR_MASK GENMASK_ULL(51, 2) #define MSI_CFG2_SH GENMASK(5, 4) #define MSI_CFG2_MEMATTR GENMASK(3, 0) @@ -194,7 +195,7 @@ Q_IDX(q, p) * (q)->ent_dwords) #define Q_BASE_RWA (1UL << 62) -#define Q_BASE_ADDR_MASK GENMASK_ULL(47, 5) +#define Q_BASE_ADDR_MASK GENMASK_ULL(51, 5) #define Q_BASE_LOG2SIZE GENMASK(4, 0) /* @@ -209,7 +210,7 @@ #define STRTAB_L1_DESC_DWORDS 1 #define STRTAB_L1_DESC_SPAN GENMASK_ULL(4, 0) -#define STRTAB_L1_DESC_L2PTR_MASK GENMASK_ULL(47, 6) +#define STRTAB_L1_DESC_L2PTR_MASK GENMASK_ULL(51, 6) #define STRTAB_STE_DWORDS 8 #define STRTAB_STE_0_V (1UL << 0) @@ -221,7 +222,7 @@ #define STRTAB_STE_0_S1FMT GENMASK_ULL(5, 4) #define STRTAB_STE_0_S1FMT_LINEAR 0 -#define STRTAB_STE_0_S1CTXPTR_MASK GENMASK_ULL(47, 6) +#define STRTAB_STE_0_S1CTXPTR_MASK GENMASK_ULL(51, 6) #define STRTAB_STE_0_S1CDMAX GENMASK_ULL(63, 59) #define STRTAB_STE_1_S1C_CACHE_NC 0UL @@ -253,7 +254,7 @@ #define STRTAB_STE_2_S2PTW (1UL << 54) #define STRTAB_STE_2_S2R (1UL << 58) -#define STRTAB_STE_3_S2TTB_MASK GENMASK_ULL(47, 4) +#define STRTAB_STE_3_S2TTB_MASK GENMASK_ULL(51, 4) /* Context descriptor (stage-1 only) */ #define CTXDESC_CD_DWORDS 8 @@ -287,7 +288,7 @@ #define CTXDESC_CD_0_ASET (1UL << 47) #define CTXDESC_CD_0_ASID GENMASK_ULL(63, 48) -#define CTXDESC_CD_1_TTB0_MASK GENMASK_ULL(47, 4) +#define CTXDESC_CD_1_TTB0_MASK GENMASK_ULL(51, 4) /* Convert between AArch64 (CPU) TCR format and SMMU CD format */ #define ARM_SMMU_TCR2CD(tcr, fld) FIELD_PREP(CTXDESC_CD_0_TCR_##fld, \ @@ -317,7 +318,7 @@ #define CMDQ_TLBI_0_ASID GENMASK_ULL(63, 48) #define CMDQ_TLBI_1_LEAF (1UL << 0) #define CMDQ_TLBI_1_VA_MASK GENMASK_ULL(63, 12) -#define CMDQ_TLBI_1_IPA_MASK GENMASK_ULL(47, 12) +#define CMDQ_TLBI_1_IPA_MASK GENMASK_ULL(51, 12) #define CMDQ_PRI_0_SSID GENMASK_ULL(31, 12) #define CMDQ_PRI_0_SID GENMASK_ULL(63, 32) @@ -331,7 +332,7 @@ #define CMDQ_SYNC_0_MSH GENMASK_ULL(23, 22) #define CMDQ_SYNC_0_MSIATTR GENMASK_ULL(27, 24) #define CMDQ_SYNC_0_MSIDATA GENMASK_ULL(63, 32) -#define CMDQ_SYNC_1_MSIADDR_MASK GENMASK_ULL(47, 2) +#define CMDQ_SYNC_1_MSIADDR_MASK GENMASK_ULL(51, 2) /* Event queue */ #define EVTQ_ENT_DWORDS 4 @@ -1622,7 +1623,7 @@ static int arm_smmu_domain_finalise(struct iommu_domain *domain) return -ENOMEM; domain->pgsize_bitmap = pgtbl_cfg.pgsize_bitmap; - domain->geometry.aperture_end = (1UL << ias) - 1; + domain->geometry.aperture_end = (1UL << pgtbl_cfg.ias) - 1; domain->geometry.force_aperture = true; ret = finalise_stage_fn(smmu_domain, &pgtbl_cfg); @@ -2644,11 +2645,6 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu) if (reg & IDR5_GRAN4K) smmu->pgsize_bitmap |= SZ_4K | SZ_2M | SZ_1G; - if (arm_smmu_ops.pgsize_bitmap == -1UL) - arm_smmu_ops.pgsize_bitmap = smmu->pgsize_bitmap; - else - arm_smmu_ops.pgsize_bitmap |= smmu->pgsize_bitmap; - /* Output address size */ switch (FIELD_GET(IDR5_OAS, reg)) { case IDR5_OAS_32_BIT: @@ -2666,6 +2662,10 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu) case IDR5_OAS_44_BIT: smmu->oas = 44; break; + case IDR5_OAS_52_BIT: + smmu->oas = 52; + smmu->pgsize_bitmap |= 1ULL << 42; /* 4TB */ + break; default: dev_info(smmu->dev, "unknown output address size. Truncating to 48-bit\n"); @@ -2674,6 +2674,11 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu) smmu->oas = 48; } + if (arm_smmu_ops.pgsize_bitmap == -1UL) + arm_smmu_ops.pgsize_bitmap = smmu->pgsize_bitmap; + else + arm_smmu_ops.pgsize_bitmap |= smmu->pgsize_bitmap; + /* Set the DMA mask for our table walker */ if (dma_set_mask_and_coherent(smmu->dev, DMA_BIT_MASK(smmu->oas))) dev_warn(smmu->dev, |