| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Robin Murphy | 1196 | 67.19% | 14 | 66.67% |
| Rob Clark | 313 | 17.58% | 1 | 4.76% |
| Will Deacon | 242 | 13.60% | 3 | 14.29% |
| Vivek Gautam | 27 | 1.52% | 2 | 9.52% |
| Thomas Gleixner | 2 | 0.11% | 1 | 4.76% |
| Total | 1780 | 21 |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * IOMMU API for ARM architected SMMU implementations. * * Copyright (C) 2013 ARM Limited * * Author: Will Deacon <will.deacon@arm.com> */ #ifndef _ARM_SMMU_H #define _ARM_SMMU_H #include <linux/atomic.h> #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/clk.h> #include <linux/device.h> #include <linux/io-64-nonatomic-hi-lo.h> #include <linux/io-pgtable.h> #include <linux/iommu.h> #include <linux/mutex.h> #include <linux/spinlock.h> #include <linux/types.h> /* Configuration registers */ #define ARM_SMMU_GR0_sCR0 0x0 #define ARM_SMMU_sCR0_VMID16EN BIT(31) #define ARM_SMMU_sCR0_BSU GENMASK(15, 14) #define ARM_SMMU_sCR0_FB BIT(13) #define ARM_SMMU_sCR0_PTM BIT(12) #define ARM_SMMU_sCR0_VMIDPNE BIT(11) #define ARM_SMMU_sCR0_USFCFG BIT(10) #define ARM_SMMU_sCR0_GCFGFIE BIT(5) #define ARM_SMMU_sCR0_GCFGFRE BIT(4) #define ARM_SMMU_sCR0_EXIDENABLE BIT(3) #define ARM_SMMU_sCR0_GFIE BIT(2) #define ARM_SMMU_sCR0_GFRE BIT(1) #define ARM_SMMU_sCR0_CLIENTPD BIT(0) /* Auxiliary Configuration register */ #define ARM_SMMU_GR0_sACR 0x10 /* Identification registers */ #define ARM_SMMU_GR0_ID0 0x20 #define ARM_SMMU_ID0_S1TS BIT(30) #define ARM_SMMU_ID0_S2TS BIT(29) #define ARM_SMMU_ID0_NTS BIT(28) #define ARM_SMMU_ID0_SMS BIT(27) #define ARM_SMMU_ID0_ATOSNS BIT(26) #define ARM_SMMU_ID0_PTFS_NO_AARCH32 BIT(25) #define ARM_SMMU_ID0_PTFS_NO_AARCH32S BIT(24) #define ARM_SMMU_ID0_NUMIRPT GENMASK(23, 16) #define ARM_SMMU_ID0_CTTW BIT(14) #define ARM_SMMU_ID0_NUMSIDB GENMASK(12, 9) #define ARM_SMMU_ID0_EXIDS BIT(8) #define ARM_SMMU_ID0_NUMSMRG GENMASK(7, 0) #define ARM_SMMU_GR0_ID1 0x24 #define ARM_SMMU_ID1_PAGESIZE BIT(31) #define ARM_SMMU_ID1_NUMPAGENDXB GENMASK(30, 28) #define ARM_SMMU_ID1_NUMS2CB GENMASK(23, 16) #define ARM_SMMU_ID1_NUMCB GENMASK(7, 0) #define ARM_SMMU_GR0_ID2 0x28 #define ARM_SMMU_ID2_VMID16 BIT(15) #define ARM_SMMU_ID2_PTFS_64K BIT(14) #define ARM_SMMU_ID2_PTFS_16K BIT(13) #define ARM_SMMU_ID2_PTFS_4K BIT(12) #define ARM_SMMU_ID2_UBS GENMASK(11, 8) #define ARM_SMMU_ID2_OAS GENMASK(7, 4) #define ARM_SMMU_ID2_IAS GENMASK(3, 0) #define ARM_SMMU_GR0_ID3 0x2c #define ARM_SMMU_GR0_ID4 0x30 #define ARM_SMMU_GR0_ID5 0x34 #define ARM_SMMU_GR0_ID6 0x38 #define ARM_SMMU_GR0_ID7 0x3c #define ARM_SMMU_ID7_MAJOR GENMASK(7, 4) #define ARM_SMMU_ID7_MINOR GENMASK(3, 0) #define ARM_SMMU_GR0_sGFSR 0x48 #define ARM_SMMU_sGFSR_USF BIT(1) #define ARM_SMMU_GR0_sGFSYNR0 0x50 #define ARM_SMMU_GR0_sGFSYNR1 0x54 #define ARM_SMMU_GR0_sGFSYNR2 0x58 /* Global TLB invalidation */ #define ARM_SMMU_GR0_TLBIVMID 0x64 #define ARM_SMMU_GR0_TLBIALLNSNH 0x68 #define ARM_SMMU_GR0_TLBIALLH 0x6c #define ARM_SMMU_GR0_sTLBGSYNC 0x70 #define ARM_SMMU_GR0_sTLBGSTATUS 0x74 #define ARM_SMMU_sTLBGSTATUS_GSACTIVE BIT(0) /* Stream mapping registers */ #define ARM_SMMU_GR0_SMR(n) (0x800 + ((n) << 2)) #define ARM_SMMU_SMR_VALID BIT(31) #define ARM_SMMU_SMR_MASK GENMASK(31, 16) #define ARM_SMMU_SMR_ID GENMASK(15, 0) #define ARM_SMMU_GR0_S2CR(n) (0xc00 + ((n) << 2)) #define ARM_SMMU_S2CR_PRIVCFG GENMASK(25, 24) enum arm_smmu_s2cr_privcfg { S2CR_PRIVCFG_DEFAULT, S2CR_PRIVCFG_DIPAN, S2CR_PRIVCFG_UNPRIV, S2CR_PRIVCFG_PRIV, }; #define ARM_SMMU_S2CR_TYPE GENMASK(17, 16) enum arm_smmu_s2cr_type { S2CR_TYPE_TRANS, S2CR_TYPE_BYPASS, S2CR_TYPE_FAULT, }; #define ARM_SMMU_S2CR_EXIDVALID BIT(10) #define ARM_SMMU_S2CR_CBNDX GENMASK(7, 0) /* Context bank attribute registers */ #define ARM_SMMU_GR1_CBAR(n) (0x0 + ((n) << 2)) #define ARM_SMMU_CBAR_IRPTNDX GENMASK(31, 24) #define ARM_SMMU_CBAR_TYPE GENMASK(17, 16) enum arm_smmu_cbar_type { CBAR_TYPE_S2_TRANS, CBAR_TYPE_S1_TRANS_S2_BYPASS, CBAR_TYPE_S1_TRANS_S2_FAULT, CBAR_TYPE_S1_TRANS_S2_TRANS, }; #define ARM_SMMU_CBAR_S1_MEMATTR GENMASK(15, 12) #define ARM_SMMU_CBAR_S1_MEMATTR_WB 0xf #define ARM_SMMU_CBAR_S1_BPSHCFG GENMASK(9, 8) #define ARM_SMMU_CBAR_S1_BPSHCFG_NSH 3 #define ARM_SMMU_CBAR_VMID GENMASK(7, 0) #define ARM_SMMU_GR1_CBFRSYNRA(n) (0x400 + ((n) << 2)) #define ARM_SMMU_GR1_CBA2R(n) (0x800 + ((n) << 2)) #define ARM_SMMU_CBA2R_VMID16 GENMASK(31, 16) #define ARM_SMMU_CBA2R_VA64 BIT(0) #define ARM_SMMU_CB_SCTLR 0x0 #define ARM_SMMU_SCTLR_S1_ASIDPNE BIT(12) #define ARM_SMMU_SCTLR_CFCFG BIT(7) #define ARM_SMMU_SCTLR_CFIE BIT(6) #define ARM_SMMU_SCTLR_CFRE BIT(5) #define ARM_SMMU_SCTLR_E BIT(4) #define ARM_SMMU_SCTLR_AFE BIT(2) #define ARM_SMMU_SCTLR_TRE BIT(1) #define ARM_SMMU_SCTLR_M BIT(0) #define ARM_SMMU_CB_ACTLR 0x4 #define ARM_SMMU_CB_RESUME 0x8 #define ARM_SMMU_RESUME_TERMINATE BIT(0) #define ARM_SMMU_CB_TCR2 0x10 #define ARM_SMMU_TCR2_SEP GENMASK(17, 15) #define ARM_SMMU_TCR2_SEP_UPSTREAM 0x7 #define ARM_SMMU_TCR2_AS BIT(4) #define ARM_SMMU_TCR2_PASIZE GENMASK(3, 0) #define ARM_SMMU_CB_TTBR0 0x20 #define ARM_SMMU_CB_TTBR1 0x28 #define ARM_SMMU_TTBRn_ASID GENMASK_ULL(63, 48) #define ARM_SMMU_CB_TCR 0x30 #define ARM_SMMU_TCR_EAE BIT(31) #define ARM_SMMU_TCR_EPD1 BIT(23) #define ARM_SMMU_TCR_TG0 GENMASK(15, 14) #define ARM_SMMU_TCR_SH0 GENMASK(13, 12) #define ARM_SMMU_TCR_ORGN0 GENMASK(11, 10) #define ARM_SMMU_TCR_IRGN0 GENMASK(9, 8) #define ARM_SMMU_TCR_T0SZ GENMASK(5, 0) #define ARM_SMMU_VTCR_RES1 BIT(31) #define ARM_SMMU_VTCR_PS GENMASK(18, 16) #define ARM_SMMU_VTCR_TG0 ARM_SMMU_TCR_TG0 #define ARM_SMMU_VTCR_SH0 ARM_SMMU_TCR_SH0 #define ARM_SMMU_VTCR_ORGN0 ARM_SMMU_TCR_ORGN0 #define ARM_SMMU_VTCR_IRGN0 ARM_SMMU_TCR_IRGN0 #define ARM_SMMU_VTCR_SL0 GENMASK(7, 6) #define ARM_SMMU_VTCR_T0SZ ARM_SMMU_TCR_T0SZ #define ARM_SMMU_CB_CONTEXTIDR 0x34 #define ARM_SMMU_CB_S1_MAIR0 0x38 #define ARM_SMMU_CB_S1_MAIR1 0x3c #define ARM_SMMU_CB_PAR 0x50 #define ARM_SMMU_CB_PAR_F BIT(0) #define ARM_SMMU_CB_FSR 0x58 #define ARM_SMMU_FSR_MULTI BIT(31) #define ARM_SMMU_FSR_SS BIT(30) #define ARM_SMMU_FSR_UUT BIT(8) #define ARM_SMMU_FSR_ASF BIT(7) #define ARM_SMMU_FSR_TLBLKF BIT(6) #define ARM_SMMU_FSR_TLBMCF BIT(5) #define ARM_SMMU_FSR_EF BIT(4) #define ARM_SMMU_FSR_PF BIT(3) #define ARM_SMMU_FSR_AFF BIT(2) #define ARM_SMMU_FSR_TF BIT(1) #define ARM_SMMU_FSR_IGN (ARM_SMMU_FSR_AFF | \ ARM_SMMU_FSR_ASF | \ ARM_SMMU_FSR_TLBMCF | \ ARM_SMMU_FSR_TLBLKF) #define ARM_SMMU_FSR_FAULT (ARM_SMMU_FSR_MULTI | \ ARM_SMMU_FSR_SS | \ ARM_SMMU_FSR_UUT | \ ARM_SMMU_FSR_EF | \ ARM_SMMU_FSR_PF | \ ARM_SMMU_FSR_TF | \ ARM_SMMU_FSR_IGN) #define ARM_SMMU_CB_FAR 0x60 #define ARM_SMMU_CB_FSYNR0 0x68 #define ARM_SMMU_FSYNR0_WNR BIT(4) #define ARM_SMMU_CB_S1_TLBIVA 0x600 #define ARM_SMMU_CB_S1_TLBIASID 0x610 #define ARM_SMMU_CB_S1_TLBIVAL 0x620 #define ARM_SMMU_CB_S2_TLBIIPAS2 0x630 #define ARM_SMMU_CB_S2_TLBIIPAS2L 0x638 #define ARM_SMMU_CB_TLBSYNC 0x7f0 #define ARM_SMMU_CB_TLBSTATUS 0x7f4 #define ARM_SMMU_CB_ATS1PR 0x800 #define ARM_SMMU_CB_ATSR 0x8f0 #define ARM_SMMU_ATSR_ACTIVE BIT(0) /* Maximum number of context banks per SMMU */ #define ARM_SMMU_MAX_CBS 128 /* Shared driver definitions */ enum arm_smmu_arch_version { ARM_SMMU_V1, ARM_SMMU_V1_64K, ARM_SMMU_V2, }; enum arm_smmu_implementation { GENERIC_SMMU, ARM_MMU500, CAVIUM_SMMUV2, QCOM_SMMUV2, }; struct arm_smmu_device { struct device *dev; void __iomem *base; unsigned int numpage; unsigned int pgshift; #define ARM_SMMU_FEAT_COHERENT_WALK (1 << 0) #define ARM_SMMU_FEAT_STREAM_MATCH (1 << 1) #define ARM_SMMU_FEAT_TRANS_S1 (1 << 2) #define ARM_SMMU_FEAT_TRANS_S2 (1 << 3) #define ARM_SMMU_FEAT_TRANS_NESTED (1 << 4) #define ARM_SMMU_FEAT_TRANS_OPS (1 << 5) #define ARM_SMMU_FEAT_VMID16 (1 << 6) #define ARM_SMMU_FEAT_FMT_AARCH64_4K (1 << 7) #define ARM_SMMU_FEAT_FMT_AARCH64_16K (1 << 8) #define ARM_SMMU_FEAT_FMT_AARCH64_64K (1 << 9) #define ARM_SMMU_FEAT_FMT_AARCH32_L (1 << 10) #define ARM_SMMU_FEAT_FMT_AARCH32_S (1 << 11) #define ARM_SMMU_FEAT_EXIDS (1 << 12) u32 features; enum arm_smmu_arch_version version; enum arm_smmu_implementation model; const struct arm_smmu_impl *impl; u32 num_context_banks; u32 num_s2_context_banks; DECLARE_BITMAP(context_map, ARM_SMMU_MAX_CBS); struct arm_smmu_cb *cbs; atomic_t irptndx; u32 num_mapping_groups; u16 streamid_mask; u16 smr_mask_mask; struct arm_smmu_smr *smrs; struct arm_smmu_s2cr *s2crs; struct mutex stream_map_mutex; unsigned long va_size; unsigned long ipa_size; unsigned long pa_size; unsigned long pgsize_bitmap; u32 num_global_irqs; u32 num_context_irqs; unsigned int *irqs; struct clk_bulk_data *clks; int num_clks; spinlock_t global_sync_lock; /* IOMMU core code handle */ struct iommu_device iommu; }; enum arm_smmu_context_fmt { ARM_SMMU_CTX_FMT_NONE, ARM_SMMU_CTX_FMT_AARCH64, ARM_SMMU_CTX_FMT_AARCH32_L, ARM_SMMU_CTX_FMT_AARCH32_S, }; struct arm_smmu_cfg { u8 cbndx; u8 irptndx; union { u16 asid; u16 vmid; }; enum arm_smmu_cbar_type cbar; enum arm_smmu_context_fmt fmt; }; #define ARM_SMMU_INVALID_IRPTNDX 0xff enum arm_smmu_domain_stage { ARM_SMMU_DOMAIN_S1 = 0, ARM_SMMU_DOMAIN_S2, ARM_SMMU_DOMAIN_NESTED, ARM_SMMU_DOMAIN_BYPASS, }; struct arm_smmu_domain { struct arm_smmu_device *smmu; struct io_pgtable_ops *pgtbl_ops; const struct iommu_flush_ops *flush_ops; struct arm_smmu_cfg cfg; enum arm_smmu_domain_stage stage; bool non_strict; struct mutex init_mutex; /* Protects smmu pointer */ spinlock_t cb_lock; /* Serialises ATS1* ops and TLB syncs */ struct iommu_domain domain; }; static inline u32 arm_smmu_lpae_tcr(struct io_pgtable_cfg *cfg) { return ARM_SMMU_TCR_EPD1 | FIELD_PREP(ARM_SMMU_TCR_TG0, cfg->arm_lpae_s1_cfg.tcr.tg) | FIELD_PREP(ARM_SMMU_TCR_SH0, cfg->arm_lpae_s1_cfg.tcr.sh) | FIELD_PREP(ARM_SMMU_TCR_ORGN0, cfg->arm_lpae_s1_cfg.tcr.orgn) | FIELD_PREP(ARM_SMMU_TCR_IRGN0, cfg->arm_lpae_s1_cfg.tcr.irgn) | FIELD_PREP(ARM_SMMU_TCR_T0SZ, cfg->arm_lpae_s1_cfg.tcr.tsz); } static inline u32 arm_smmu_lpae_tcr2(struct io_pgtable_cfg *cfg) { return FIELD_PREP(ARM_SMMU_TCR2_PASIZE, cfg->arm_lpae_s1_cfg.tcr.ips) | FIELD_PREP(ARM_SMMU_TCR2_SEP, ARM_SMMU_TCR2_SEP_UPSTREAM); } static inline u32 arm_smmu_lpae_vtcr(struct io_pgtable_cfg *cfg) { return ARM_SMMU_VTCR_RES1 | FIELD_PREP(ARM_SMMU_VTCR_PS, cfg->arm_lpae_s2_cfg.vtcr.ps) | FIELD_PREP(ARM_SMMU_VTCR_TG0, cfg->arm_lpae_s2_cfg.vtcr.tg) | FIELD_PREP(ARM_SMMU_VTCR_SH0, cfg->arm_lpae_s2_cfg.vtcr.sh) | FIELD_PREP(ARM_SMMU_VTCR_ORGN0, cfg->arm_lpae_s2_cfg.vtcr.orgn) | FIELD_PREP(ARM_SMMU_VTCR_IRGN0, cfg->arm_lpae_s2_cfg.vtcr.irgn) | FIELD_PREP(ARM_SMMU_VTCR_SL0, cfg->arm_lpae_s2_cfg.vtcr.sl) | FIELD_PREP(ARM_SMMU_VTCR_T0SZ, cfg->arm_lpae_s2_cfg.vtcr.tsz); } /* Implementation details, yay! */ struct arm_smmu_impl { u32 (*read_reg)(struct arm_smmu_device *smmu, int page, int offset); void (*write_reg)(struct arm_smmu_device *smmu, int page, int offset, u32 val); u64 (*read_reg64)(struct arm_smmu_device *smmu, int page, int offset); void (*write_reg64)(struct arm_smmu_device *smmu, int page, int offset, u64 val); int (*cfg_probe)(struct arm_smmu_device *smmu); int (*reset)(struct arm_smmu_device *smmu); int (*init_context)(struct arm_smmu_domain *smmu_domain); void (*tlb_sync)(struct arm_smmu_device *smmu, int page, int sync, int status); }; static inline void __iomem *arm_smmu_page(struct arm_smmu_device *smmu, int n) { return smmu->base + (n << smmu->pgshift); } static inline u32 arm_smmu_readl(struct arm_smmu_device *smmu, int page, int offset) { if (smmu->impl && unlikely(smmu->impl->read_reg)) return smmu->impl->read_reg(smmu, page, offset); return readl_relaxed(arm_smmu_page(smmu, page) + offset); } static inline void arm_smmu_writel(struct arm_smmu_device *smmu, int page, int offset, u32 val) { if (smmu->impl && unlikely(smmu->impl->write_reg)) smmu->impl->write_reg(smmu, page, offset, val); else writel_relaxed(val, arm_smmu_page(smmu, page) + offset); } static inline u64 arm_smmu_readq(struct arm_smmu_device *smmu, int page, int offset) { if (smmu->impl && unlikely(smmu->impl->read_reg64)) return smmu->impl->read_reg64(smmu, page, offset); return readq_relaxed(arm_smmu_page(smmu, page) + offset); } static inline void arm_smmu_writeq(struct arm_smmu_device *smmu, int page, int offset, u64 val) { if (smmu->impl && unlikely(smmu->impl->write_reg64)) smmu->impl->write_reg64(smmu, page, offset, val); else writeq_relaxed(val, arm_smmu_page(smmu, page) + offset); } #define ARM_SMMU_GR0 0 #define ARM_SMMU_GR1 1 #define ARM_SMMU_CB(s, n) ((s)->numpage + (n)) #define arm_smmu_gr0_read(s, o) \ arm_smmu_readl((s), ARM_SMMU_GR0, (o)) #define arm_smmu_gr0_write(s, o, v) \ arm_smmu_writel((s), ARM_SMMU_GR0, (o), (v)) #define arm_smmu_gr1_read(s, o) \ arm_smmu_readl((s), ARM_SMMU_GR1, (o)) #define arm_smmu_gr1_write(s, o, v) \ arm_smmu_writel((s), ARM_SMMU_GR1, (o), (v)) #define arm_smmu_cb_read(s, n, o) \ arm_smmu_readl((s), ARM_SMMU_CB((s), (n)), (o)) #define arm_smmu_cb_write(s, n, o, v) \ arm_smmu_writel((s), ARM_SMMU_CB((s), (n)), (o), (v)) #define arm_smmu_cb_readq(s, n, o) \ arm_smmu_readq((s), ARM_SMMU_CB((s), (n)), (o)) #define arm_smmu_cb_writeq(s, n, o, v) \ arm_smmu_writeq((s), ARM_SMMU_CB((s), (n)), (o), (v)) struct arm_smmu_device *arm_smmu_impl_init(struct arm_smmu_device *smmu); struct arm_smmu_device *qcom_smmu_impl_init(struct arm_smmu_device *smmu); int arm_mmu500_reset(struct arm_smmu_device *smmu); #endif /* _ARM_SMMU_H */
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