| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * IOMMU API for ARM architected SMMUv3 implementations. |
| * |
| * Copyright (C) 2015 ARM Limited |
| */ |
| |
| #ifndef _ARM_SMMU_V3_H |
| #define _ARM_SMMU_V3_H |
| |
| #include <linux/bitfield.h> |
| #include <linux/iommu.h> |
| #include <linux/kernel.h> |
| #include <linux/mmzone.h> |
| #include <linux/sizes.h> |
| |
| /* MMIO registers */ |
| #define ARM_SMMU_IDR0 0x0 |
| #define IDR0_ST_LVL GENMASK(28, 27) |
| #define IDR0_ST_LVL_2LVL 1 |
| #define IDR0_STALL_MODEL GENMASK(25, 24) |
| #define IDR0_STALL_MODEL_STALL 0 |
| #define IDR0_STALL_MODEL_FORCE 2 |
| #define IDR0_TTENDIAN GENMASK(22, 21) |
| #define IDR0_TTENDIAN_MIXED 0 |
| #define IDR0_TTENDIAN_LE 2 |
| #define IDR0_TTENDIAN_BE 3 |
| #define IDR0_CD2L (1 << 19) |
| #define IDR0_VMID16 (1 << 18) |
| #define IDR0_PRI (1 << 16) |
| #define IDR0_SEV (1 << 14) |
| #define IDR0_MSI (1 << 13) |
| #define IDR0_ASID16 (1 << 12) |
| #define IDR0_ATS (1 << 10) |
| #define IDR0_HYP (1 << 9) |
| #define IDR0_COHACC (1 << 4) |
| #define IDR0_TTF GENMASK(3, 2) |
| #define IDR0_TTF_AARCH64 2 |
| #define IDR0_TTF_AARCH32_64 3 |
| #define IDR0_S1P (1 << 1) |
| #define IDR0_S2P (1 << 0) |
| |
| #define ARM_SMMU_IDR1 0x4 |
| #define IDR1_TABLES_PRESET (1 << 30) |
| #define IDR1_QUEUES_PRESET (1 << 29) |
| #define IDR1_REL (1 << 28) |
| #define IDR1_CMDQS GENMASK(25, 21) |
| #define IDR1_EVTQS GENMASK(20, 16) |
| #define IDR1_PRIQS GENMASK(15, 11) |
| #define IDR1_SSIDSIZE GENMASK(10, 6) |
| #define IDR1_SIDSIZE GENMASK(5, 0) |
| |
| #define ARM_SMMU_IDR3 0xc |
| #define IDR3_RIL (1 << 10) |
| |
| #define ARM_SMMU_IDR5 0x14 |
| #define IDR5_STALL_MAX GENMASK(31, 16) |
| #define IDR5_GRAN64K (1 << 6) |
| #define IDR5_GRAN16K (1 << 5) |
| #define IDR5_GRAN4K (1 << 4) |
| #define IDR5_OAS GENMASK(2, 0) |
| #define IDR5_OAS_32_BIT 0 |
| #define IDR5_OAS_36_BIT 1 |
| #define IDR5_OAS_40_BIT 2 |
| #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 IDR5_VAX GENMASK(11, 10) |
| #define IDR5_VAX_52_BIT 1 |
| |
| #define ARM_SMMU_IIDR 0x18 |
| #define IIDR_PRODUCTID GENMASK(31, 20) |
| #define IIDR_VARIANT GENMASK(19, 16) |
| #define IIDR_REVISION GENMASK(15, 12) |
| #define IIDR_IMPLEMENTER GENMASK(11, 0) |
| |
| #define ARM_SMMU_CR0 0x20 |
| #define CR0_ATSCHK (1 << 4) |
| #define CR0_CMDQEN (1 << 3) |
| #define CR0_EVTQEN (1 << 2) |
| #define CR0_PRIQEN (1 << 1) |
| #define CR0_SMMUEN (1 << 0) |
| |
| #define ARM_SMMU_CR0ACK 0x24 |
| |
| #define ARM_SMMU_CR1 0x28 |
| #define CR1_TABLE_SH GENMASK(11, 10) |
| #define CR1_TABLE_OC GENMASK(9, 8) |
| #define CR1_TABLE_IC GENMASK(7, 6) |
| #define CR1_QUEUE_SH GENMASK(5, 4) |
| #define CR1_QUEUE_OC GENMASK(3, 2) |
| #define CR1_QUEUE_IC GENMASK(1, 0) |
| /* CR1 cacheability fields don't quite follow the usual TCR-style encoding */ |
| #define CR1_CACHE_NC 0 |
| #define CR1_CACHE_WB 1 |
| #define CR1_CACHE_WT 2 |
| |
| #define ARM_SMMU_CR2 0x2c |
| #define CR2_PTM (1 << 2) |
| #define CR2_RECINVSID (1 << 1) |
| #define CR2_E2H (1 << 0) |
| |
| #define ARM_SMMU_GBPA 0x44 |
| #define GBPA_UPDATE (1 << 31) |
| #define GBPA_ABORT (1 << 20) |
| |
| #define ARM_SMMU_IRQ_CTRL 0x50 |
| #define IRQ_CTRL_EVTQ_IRQEN (1 << 2) |
| #define IRQ_CTRL_PRIQ_IRQEN (1 << 1) |
| #define IRQ_CTRL_GERROR_IRQEN (1 << 0) |
| |
| #define ARM_SMMU_IRQ_CTRLACK 0x54 |
| |
| #define ARM_SMMU_GERROR 0x60 |
| #define GERROR_SFM_ERR (1 << 8) |
| #define GERROR_MSI_GERROR_ABT_ERR (1 << 7) |
| #define GERROR_MSI_PRIQ_ABT_ERR (1 << 6) |
| #define GERROR_MSI_EVTQ_ABT_ERR (1 << 5) |
| #define GERROR_MSI_CMDQ_ABT_ERR (1 << 4) |
| #define GERROR_PRIQ_ABT_ERR (1 << 3) |
| #define GERROR_EVTQ_ABT_ERR (1 << 2) |
| #define GERROR_CMDQ_ERR (1 << 0) |
| #define GERROR_ERR_MASK 0x1fd |
| |
| #define ARM_SMMU_GERRORN 0x64 |
| |
| #define ARM_SMMU_GERROR_IRQ_CFG0 0x68 |
| #define ARM_SMMU_GERROR_IRQ_CFG1 0x70 |
| #define ARM_SMMU_GERROR_IRQ_CFG2 0x74 |
| |
| #define ARM_SMMU_STRTAB_BASE 0x80 |
| #define STRTAB_BASE_RA (1UL << 62) |
| #define STRTAB_BASE_ADDR_MASK GENMASK_ULL(51, 6) |
| |
| #define ARM_SMMU_STRTAB_BASE_CFG 0x88 |
| #define STRTAB_BASE_CFG_FMT GENMASK(17, 16) |
| #define STRTAB_BASE_CFG_FMT_LINEAR 0 |
| #define STRTAB_BASE_CFG_FMT_2LVL 1 |
| #define STRTAB_BASE_CFG_SPLIT GENMASK(10, 6) |
| #define STRTAB_BASE_CFG_LOG2SIZE GENMASK(5, 0) |
| |
| #define ARM_SMMU_CMDQ_BASE 0x90 |
| #define ARM_SMMU_CMDQ_PROD 0x98 |
| #define ARM_SMMU_CMDQ_CONS 0x9c |
| |
| #define ARM_SMMU_EVTQ_BASE 0xa0 |
| #define ARM_SMMU_EVTQ_PROD 0xa8 |
| #define ARM_SMMU_EVTQ_CONS 0xac |
| #define ARM_SMMU_EVTQ_IRQ_CFG0 0xb0 |
| #define ARM_SMMU_EVTQ_IRQ_CFG1 0xb8 |
| #define ARM_SMMU_EVTQ_IRQ_CFG2 0xbc |
| |
| #define ARM_SMMU_PRIQ_BASE 0xc0 |
| #define ARM_SMMU_PRIQ_PROD 0xc8 |
| #define ARM_SMMU_PRIQ_CONS 0xcc |
| #define ARM_SMMU_PRIQ_IRQ_CFG0 0xd0 |
| #define ARM_SMMU_PRIQ_IRQ_CFG1 0xd8 |
| #define ARM_SMMU_PRIQ_IRQ_CFG2 0xdc |
| |
| #define ARM_SMMU_REG_SZ 0xe00 |
| |
| /* Common MSI config fields */ |
| #define MSI_CFG0_ADDR_MASK GENMASK_ULL(51, 2) |
| #define MSI_CFG2_SH GENMASK(5, 4) |
| #define MSI_CFG2_MEMATTR GENMASK(3, 0) |
| |
| /* Common memory attribute values */ |
| #define ARM_SMMU_SH_NSH 0 |
| #define ARM_SMMU_SH_OSH 2 |
| #define ARM_SMMU_SH_ISH 3 |
| #define ARM_SMMU_MEMATTR_DEVICE_nGnRE 0x1 |
| #define ARM_SMMU_MEMATTR_OIWB 0xf |
| |
| #define Q_IDX(llq, p) ((p) & ((1 << (llq)->max_n_shift) - 1)) |
| #define Q_WRP(llq, p) ((p) & (1 << (llq)->max_n_shift)) |
| #define Q_OVERFLOW_FLAG (1U << 31) |
| #define Q_OVF(p) ((p) & Q_OVERFLOW_FLAG) |
| #define Q_ENT(q, p) ((q)->base + \ |
| Q_IDX(&((q)->llq), p) * \ |
| (q)->ent_dwords) |
| |
| #define Q_BASE_RWA (1UL << 62) |
| #define Q_BASE_ADDR_MASK GENMASK_ULL(51, 5) |
| #define Q_BASE_LOG2SIZE GENMASK(4, 0) |
| |
| /* Ensure DMA allocations are naturally aligned */ |
| #ifdef CONFIG_CMA_ALIGNMENT |
| #define Q_MAX_SZ_SHIFT (PAGE_SHIFT + CONFIG_CMA_ALIGNMENT) |
| #else |
| #define Q_MAX_SZ_SHIFT (PAGE_SHIFT + MAX_PAGE_ORDER) |
| #endif |
| |
| /* |
| * Stream table. |
| * |
| * Linear: Enough to cover 1 << IDR1.SIDSIZE entries |
| * 2lvl: 128k L1 entries, |
| * 256 lazy entries per table (each table covers a PCI bus) |
| */ |
| #define STRTAB_L1_SZ_SHIFT 20 |
| #define STRTAB_SPLIT 8 |
| |
| #define STRTAB_L1_DESC_DWORDS 1 |
| #define STRTAB_L1_DESC_SPAN GENMASK_ULL(4, 0) |
| #define STRTAB_L1_DESC_L2PTR_MASK GENMASK_ULL(51, 6) |
| |
| #define STRTAB_STE_DWORDS 8 |
| |
| struct arm_smmu_ste { |
| __le64 data[STRTAB_STE_DWORDS]; |
| }; |
| |
| #define STRTAB_STE_0_V (1UL << 0) |
| #define STRTAB_STE_0_CFG GENMASK_ULL(3, 1) |
| #define STRTAB_STE_0_CFG_ABORT 0 |
| #define STRTAB_STE_0_CFG_BYPASS 4 |
| #define STRTAB_STE_0_CFG_S1_TRANS 5 |
| #define STRTAB_STE_0_CFG_S2_TRANS 6 |
| |
| #define STRTAB_STE_0_S1FMT GENMASK_ULL(5, 4) |
| #define STRTAB_STE_0_S1FMT_LINEAR 0 |
| #define STRTAB_STE_0_S1FMT_64K_L2 2 |
| #define STRTAB_STE_0_S1CTXPTR_MASK GENMASK_ULL(51, 6) |
| #define STRTAB_STE_0_S1CDMAX GENMASK_ULL(63, 59) |
| |
| #define STRTAB_STE_1_S1DSS GENMASK_ULL(1, 0) |
| #define STRTAB_STE_1_S1DSS_TERMINATE 0x0 |
| #define STRTAB_STE_1_S1DSS_BYPASS 0x1 |
| #define STRTAB_STE_1_S1DSS_SSID0 0x2 |
| |
| #define STRTAB_STE_1_S1C_CACHE_NC 0UL |
| #define STRTAB_STE_1_S1C_CACHE_WBRA 1UL |
| #define STRTAB_STE_1_S1C_CACHE_WT 2UL |
| #define STRTAB_STE_1_S1C_CACHE_WB 3UL |
| #define STRTAB_STE_1_S1CIR GENMASK_ULL(3, 2) |
| #define STRTAB_STE_1_S1COR GENMASK_ULL(5, 4) |
| #define STRTAB_STE_1_S1CSH GENMASK_ULL(7, 6) |
| |
| #define STRTAB_STE_1_S1STALLD (1UL << 27) |
| |
| #define STRTAB_STE_1_EATS GENMASK_ULL(29, 28) |
| #define STRTAB_STE_1_EATS_ABT 0UL |
| #define STRTAB_STE_1_EATS_TRANS 1UL |
| #define STRTAB_STE_1_EATS_S1CHK 2UL |
| |
| #define STRTAB_STE_1_STRW GENMASK_ULL(31, 30) |
| #define STRTAB_STE_1_STRW_NSEL1 0UL |
| #define STRTAB_STE_1_STRW_EL2 2UL |
| |
| #define STRTAB_STE_1_SHCFG GENMASK_ULL(45, 44) |
| #define STRTAB_STE_1_SHCFG_INCOMING 1UL |
| |
| #define STRTAB_STE_2_S2VMID GENMASK_ULL(15, 0) |
| #define STRTAB_STE_2_VTCR GENMASK_ULL(50, 32) |
| #define STRTAB_STE_2_VTCR_S2T0SZ GENMASK_ULL(5, 0) |
| #define STRTAB_STE_2_VTCR_S2SL0 GENMASK_ULL(7, 6) |
| #define STRTAB_STE_2_VTCR_S2IR0 GENMASK_ULL(9, 8) |
| #define STRTAB_STE_2_VTCR_S2OR0 GENMASK_ULL(11, 10) |
| #define STRTAB_STE_2_VTCR_S2SH0 GENMASK_ULL(13, 12) |
| #define STRTAB_STE_2_VTCR_S2TG GENMASK_ULL(15, 14) |
| #define STRTAB_STE_2_VTCR_S2PS GENMASK_ULL(18, 16) |
| #define STRTAB_STE_2_S2AA64 (1UL << 51) |
| #define STRTAB_STE_2_S2ENDI (1UL << 52) |
| #define STRTAB_STE_2_S2PTW (1UL << 54) |
| #define STRTAB_STE_2_S2R (1UL << 58) |
| |
| #define STRTAB_STE_3_S2TTB_MASK GENMASK_ULL(51, 4) |
| |
| /* |
| * Context descriptors. |
| * |
| * Linear: when less than 1024 SSIDs are supported |
| * 2lvl: at most 1024 L1 entries, |
| * 1024 lazy entries per table. |
| */ |
| #define CTXDESC_SPLIT 10 |
| #define CTXDESC_L2_ENTRIES (1 << CTXDESC_SPLIT) |
| |
| #define CTXDESC_L1_DESC_DWORDS 1 |
| #define CTXDESC_L1_DESC_V (1UL << 0) |
| #define CTXDESC_L1_DESC_L2PTR_MASK GENMASK_ULL(51, 12) |
| |
| #define CTXDESC_CD_DWORDS 8 |
| #define CTXDESC_CD_0_TCR_T0SZ GENMASK_ULL(5, 0) |
| #define CTXDESC_CD_0_TCR_TG0 GENMASK_ULL(7, 6) |
| #define CTXDESC_CD_0_TCR_IRGN0 GENMASK_ULL(9, 8) |
| #define CTXDESC_CD_0_TCR_ORGN0 GENMASK_ULL(11, 10) |
| #define CTXDESC_CD_0_TCR_SH0 GENMASK_ULL(13, 12) |
| #define CTXDESC_CD_0_TCR_EPD0 (1ULL << 14) |
| #define CTXDESC_CD_0_TCR_EPD1 (1ULL << 30) |
| |
| #define CTXDESC_CD_0_ENDI (1UL << 15) |
| #define CTXDESC_CD_0_V (1UL << 31) |
| |
| #define CTXDESC_CD_0_TCR_IPS GENMASK_ULL(34, 32) |
| #define CTXDESC_CD_0_TCR_TBI0 (1ULL << 38) |
| |
| #define CTXDESC_CD_0_AA64 (1UL << 41) |
| #define CTXDESC_CD_0_S (1UL << 44) |
| #define CTXDESC_CD_0_R (1UL << 45) |
| #define CTXDESC_CD_0_A (1UL << 46) |
| #define CTXDESC_CD_0_ASET (1UL << 47) |
| #define CTXDESC_CD_0_ASID GENMASK_ULL(63, 48) |
| |
| #define CTXDESC_CD_1_TTB0_MASK GENMASK_ULL(51, 4) |
| |
| /* |
| * When the SMMU only supports linear context descriptor tables, pick a |
| * reasonable size limit (64kB). |
| */ |
| #define CTXDESC_LINEAR_CDMAX ilog2(SZ_64K / (CTXDESC_CD_DWORDS << 3)) |
| |
| /* Command queue */ |
| #define CMDQ_ENT_SZ_SHIFT 4 |
| #define CMDQ_ENT_DWORDS ((1 << CMDQ_ENT_SZ_SHIFT) >> 3) |
| #define CMDQ_MAX_SZ_SHIFT (Q_MAX_SZ_SHIFT - CMDQ_ENT_SZ_SHIFT) |
| |
| #define CMDQ_CONS_ERR GENMASK(30, 24) |
| #define CMDQ_ERR_CERROR_NONE_IDX 0 |
| #define CMDQ_ERR_CERROR_ILL_IDX 1 |
| #define CMDQ_ERR_CERROR_ABT_IDX 2 |
| #define CMDQ_ERR_CERROR_ATC_INV_IDX 3 |
| |
| #define CMDQ_PROD_OWNED_FLAG Q_OVERFLOW_FLAG |
| |
| /* |
| * This is used to size the command queue and therefore must be at least |
| * BITS_PER_LONG so that the valid_map works correctly (it relies on the |
| * total number of queue entries being a multiple of BITS_PER_LONG). |
| */ |
| #define CMDQ_BATCH_ENTRIES BITS_PER_LONG |
| |
| #define CMDQ_0_OP GENMASK_ULL(7, 0) |
| #define CMDQ_0_SSV (1UL << 11) |
| |
| #define CMDQ_PREFETCH_0_SID GENMASK_ULL(63, 32) |
| #define CMDQ_PREFETCH_1_SIZE GENMASK_ULL(4, 0) |
| #define CMDQ_PREFETCH_1_ADDR_MASK GENMASK_ULL(63, 12) |
| |
| #define CMDQ_CFGI_0_SSID GENMASK_ULL(31, 12) |
| #define CMDQ_CFGI_0_SID GENMASK_ULL(63, 32) |
| #define CMDQ_CFGI_1_LEAF (1UL << 0) |
| #define CMDQ_CFGI_1_RANGE GENMASK_ULL(4, 0) |
| |
| #define CMDQ_TLBI_0_NUM GENMASK_ULL(16, 12) |
| #define CMDQ_TLBI_RANGE_NUM_MAX 31 |
| #define CMDQ_TLBI_0_SCALE GENMASK_ULL(24, 20) |
| #define CMDQ_TLBI_0_VMID GENMASK_ULL(47, 32) |
| #define CMDQ_TLBI_0_ASID GENMASK_ULL(63, 48) |
| #define CMDQ_TLBI_1_LEAF (1UL << 0) |
| #define CMDQ_TLBI_1_TTL GENMASK_ULL(9, 8) |
| #define CMDQ_TLBI_1_TG GENMASK_ULL(11, 10) |
| #define CMDQ_TLBI_1_VA_MASK GENMASK_ULL(63, 12) |
| #define CMDQ_TLBI_1_IPA_MASK GENMASK_ULL(51, 12) |
| |
| #define CMDQ_ATC_0_SSID GENMASK_ULL(31, 12) |
| #define CMDQ_ATC_0_SID GENMASK_ULL(63, 32) |
| #define CMDQ_ATC_0_GLOBAL (1UL << 9) |
| #define CMDQ_ATC_1_SIZE GENMASK_ULL(5, 0) |
| #define CMDQ_ATC_1_ADDR_MASK GENMASK_ULL(63, 12) |
| |
| #define CMDQ_PRI_0_SSID GENMASK_ULL(31, 12) |
| #define CMDQ_PRI_0_SID GENMASK_ULL(63, 32) |
| #define CMDQ_PRI_1_GRPID GENMASK_ULL(8, 0) |
| #define CMDQ_PRI_1_RESP GENMASK_ULL(13, 12) |
| |
| #define CMDQ_RESUME_0_RESP_TERM 0UL |
| #define CMDQ_RESUME_0_RESP_RETRY 1UL |
| #define CMDQ_RESUME_0_RESP_ABORT 2UL |
| #define CMDQ_RESUME_0_RESP GENMASK_ULL(13, 12) |
| #define CMDQ_RESUME_0_SID GENMASK_ULL(63, 32) |
| #define CMDQ_RESUME_1_STAG GENMASK_ULL(15, 0) |
| |
| #define CMDQ_SYNC_0_CS GENMASK_ULL(13, 12) |
| #define CMDQ_SYNC_0_CS_NONE 0 |
| #define CMDQ_SYNC_0_CS_IRQ 1 |
| #define CMDQ_SYNC_0_CS_SEV 2 |
| #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(51, 2) |
| |
| /* Event queue */ |
| #define EVTQ_ENT_SZ_SHIFT 5 |
| #define EVTQ_ENT_DWORDS ((1 << EVTQ_ENT_SZ_SHIFT) >> 3) |
| #define EVTQ_MAX_SZ_SHIFT (Q_MAX_SZ_SHIFT - EVTQ_ENT_SZ_SHIFT) |
| |
| #define EVTQ_0_ID GENMASK_ULL(7, 0) |
| |
| #define EVT_ID_TRANSLATION_FAULT 0x10 |
| #define EVT_ID_ADDR_SIZE_FAULT 0x11 |
| #define EVT_ID_ACCESS_FAULT 0x12 |
| #define EVT_ID_PERMISSION_FAULT 0x13 |
| |
| #define EVTQ_0_SSV (1UL << 11) |
| #define EVTQ_0_SSID GENMASK_ULL(31, 12) |
| #define EVTQ_0_SID GENMASK_ULL(63, 32) |
| #define EVTQ_1_STAG GENMASK_ULL(15, 0) |
| #define EVTQ_1_STALL (1UL << 31) |
| #define EVTQ_1_PnU (1UL << 33) |
| #define EVTQ_1_InD (1UL << 34) |
| #define EVTQ_1_RnW (1UL << 35) |
| #define EVTQ_1_S2 (1UL << 39) |
| #define EVTQ_1_CLASS GENMASK_ULL(41, 40) |
| #define EVTQ_1_TT_READ (1UL << 44) |
| #define EVTQ_2_ADDR GENMASK_ULL(63, 0) |
| #define EVTQ_3_IPA GENMASK_ULL(51, 12) |
| |
| /* PRI queue */ |
| #define PRIQ_ENT_SZ_SHIFT 4 |
| #define PRIQ_ENT_DWORDS ((1 << PRIQ_ENT_SZ_SHIFT) >> 3) |
| #define PRIQ_MAX_SZ_SHIFT (Q_MAX_SZ_SHIFT - PRIQ_ENT_SZ_SHIFT) |
| |
| #define PRIQ_0_SID GENMASK_ULL(31, 0) |
| #define PRIQ_0_SSID GENMASK_ULL(51, 32) |
| #define PRIQ_0_PERM_PRIV (1UL << 58) |
| #define PRIQ_0_PERM_EXEC (1UL << 59) |
| #define PRIQ_0_PERM_READ (1UL << 60) |
| #define PRIQ_0_PERM_WRITE (1UL << 61) |
| #define PRIQ_0_PRG_LAST (1UL << 62) |
| #define PRIQ_0_SSID_V (1UL << 63) |
| |
| #define PRIQ_1_PRG_IDX GENMASK_ULL(8, 0) |
| #define PRIQ_1_ADDR_MASK GENMASK_ULL(63, 12) |
| |
| /* High-level queue structures */ |
| #define ARM_SMMU_POLL_TIMEOUT_US 1000000 /* 1s! */ |
| #define ARM_SMMU_POLL_SPIN_COUNT 10 |
| |
| #define MSI_IOVA_BASE 0x8000000 |
| #define MSI_IOVA_LENGTH 0x100000 |
| |
| enum pri_resp { |
| PRI_RESP_DENY = 0, |
| PRI_RESP_FAIL = 1, |
| PRI_RESP_SUCC = 2, |
| }; |
| |
| struct arm_smmu_cmdq_ent { |
| /* Common fields */ |
| u8 opcode; |
| bool substream_valid; |
| |
| /* Command-specific fields */ |
| union { |
| #define CMDQ_OP_PREFETCH_CFG 0x1 |
| struct { |
| u32 sid; |
| } prefetch; |
| |
| #define CMDQ_OP_CFGI_STE 0x3 |
| #define CMDQ_OP_CFGI_ALL 0x4 |
| #define CMDQ_OP_CFGI_CD 0x5 |
| #define CMDQ_OP_CFGI_CD_ALL 0x6 |
| struct { |
| u32 sid; |
| u32 ssid; |
| union { |
| bool leaf; |
| u8 span; |
| }; |
| } cfgi; |
| |
| #define CMDQ_OP_TLBI_NH_ASID 0x11 |
| #define CMDQ_OP_TLBI_NH_VA 0x12 |
| #define CMDQ_OP_TLBI_EL2_ALL 0x20 |
| #define CMDQ_OP_TLBI_EL2_ASID 0x21 |
| #define CMDQ_OP_TLBI_EL2_VA 0x22 |
| #define CMDQ_OP_TLBI_S12_VMALL 0x28 |
| #define CMDQ_OP_TLBI_S2_IPA 0x2a |
| #define CMDQ_OP_TLBI_NSNH_ALL 0x30 |
| struct { |
| u8 num; |
| u8 scale; |
| u16 asid; |
| u16 vmid; |
| bool leaf; |
| u8 ttl; |
| u8 tg; |
| u64 addr; |
| } tlbi; |
| |
| #define CMDQ_OP_ATC_INV 0x40 |
| #define ATC_INV_SIZE_ALL 52 |
| struct { |
| u32 sid; |
| u32 ssid; |
| u64 addr; |
| u8 size; |
| bool global; |
| } atc; |
| |
| #define CMDQ_OP_PRI_RESP 0x41 |
| struct { |
| u32 sid; |
| u32 ssid; |
| u16 grpid; |
| enum pri_resp resp; |
| } pri; |
| |
| #define CMDQ_OP_RESUME 0x44 |
| struct { |
| u32 sid; |
| u16 stag; |
| u8 resp; |
| } resume; |
| |
| #define CMDQ_OP_CMD_SYNC 0x46 |
| struct { |
| u64 msiaddr; |
| } sync; |
| }; |
| }; |
| |
| struct arm_smmu_ll_queue { |
| union { |
| u64 val; |
| struct { |
| u32 prod; |
| u32 cons; |
| }; |
| struct { |
| atomic_t prod; |
| atomic_t cons; |
| } atomic; |
| u8 __pad[SMP_CACHE_BYTES]; |
| } ____cacheline_aligned_in_smp; |
| u32 max_n_shift; |
| }; |
| |
| struct arm_smmu_queue { |
| struct arm_smmu_ll_queue llq; |
| int irq; /* Wired interrupt */ |
| |
| __le64 *base; |
| dma_addr_t base_dma; |
| u64 q_base; |
| |
| size_t ent_dwords; |
| |
| u32 __iomem *prod_reg; |
| u32 __iomem *cons_reg; |
| }; |
| |
| struct arm_smmu_queue_poll { |
| ktime_t timeout; |
| unsigned int delay; |
| unsigned int spin_cnt; |
| bool wfe; |
| }; |
| |
| struct arm_smmu_cmdq { |
| struct arm_smmu_queue q; |
| atomic_long_t *valid_map; |
| atomic_t owner_prod; |
| atomic_t lock; |
| }; |
| |
| struct arm_smmu_cmdq_batch { |
| u64 cmds[CMDQ_BATCH_ENTRIES * CMDQ_ENT_DWORDS]; |
| int num; |
| }; |
| |
| struct arm_smmu_evtq { |
| struct arm_smmu_queue q; |
| struct iopf_queue *iopf; |
| u32 max_stalls; |
| }; |
| |
| struct arm_smmu_priq { |
| struct arm_smmu_queue q; |
| }; |
| |
| /* High-level stream table and context descriptor structures */ |
| struct arm_smmu_strtab_l1_desc { |
| u8 span; |
| |
| struct arm_smmu_ste *l2ptr; |
| dma_addr_t l2ptr_dma; |
| }; |
| |
| struct arm_smmu_ctx_desc { |
| u16 asid; |
| u64 ttbr; |
| u64 tcr; |
| u64 mair; |
| |
| refcount_t refs; |
| struct mm_struct *mm; |
| }; |
| |
| struct arm_smmu_l1_ctx_desc { |
| __le64 *l2ptr; |
| dma_addr_t l2ptr_dma; |
| }; |
| |
| struct arm_smmu_ctx_desc_cfg { |
| __le64 *cdtab; |
| dma_addr_t cdtab_dma; |
| struct arm_smmu_l1_ctx_desc *l1_desc; |
| unsigned int num_l1_ents; |
| u8 s1fmt; |
| /* log2 of the maximum number of CDs supported by this table */ |
| u8 s1cdmax; |
| /* Whether CD entries in this table have the stall bit set. */ |
| u8 stall_enabled:1; |
| }; |
| |
| struct arm_smmu_s2_cfg { |
| u16 vmid; |
| }; |
| |
| struct arm_smmu_strtab_cfg { |
| __le64 *strtab; |
| dma_addr_t strtab_dma; |
| struct arm_smmu_strtab_l1_desc *l1_desc; |
| unsigned int num_l1_ents; |
| |
| u64 strtab_base; |
| u32 strtab_base_cfg; |
| }; |
| |
| /* An SMMUv3 instance */ |
| struct arm_smmu_device { |
| struct device *dev; |
| void __iomem *base; |
| void __iomem *page1; |
| |
| #define ARM_SMMU_FEAT_2_LVL_STRTAB (1 << 0) |
| #define ARM_SMMU_FEAT_2_LVL_CDTAB (1 << 1) |
| #define ARM_SMMU_FEAT_TT_LE (1 << 2) |
| #define ARM_SMMU_FEAT_TT_BE (1 << 3) |
| #define ARM_SMMU_FEAT_PRI (1 << 4) |
| #define ARM_SMMU_FEAT_ATS (1 << 5) |
| #define ARM_SMMU_FEAT_SEV (1 << 6) |
| #define ARM_SMMU_FEAT_MSI (1 << 7) |
| #define ARM_SMMU_FEAT_COHERENCY (1 << 8) |
| #define ARM_SMMU_FEAT_TRANS_S1 (1 << 9) |
| #define ARM_SMMU_FEAT_TRANS_S2 (1 << 10) |
| #define ARM_SMMU_FEAT_STALLS (1 << 11) |
| #define ARM_SMMU_FEAT_HYP (1 << 12) |
| #define ARM_SMMU_FEAT_STALL_FORCE (1 << 13) |
| #define ARM_SMMU_FEAT_VAX (1 << 14) |
| #define ARM_SMMU_FEAT_RANGE_INV (1 << 15) |
| #define ARM_SMMU_FEAT_BTM (1 << 16) |
| #define ARM_SMMU_FEAT_SVA (1 << 17) |
| #define ARM_SMMU_FEAT_E2H (1 << 18) |
| #define ARM_SMMU_FEAT_NESTING (1 << 19) |
| u32 features; |
| |
| #define ARM_SMMU_OPT_SKIP_PREFETCH (1 << 0) |
| #define ARM_SMMU_OPT_PAGE0_REGS_ONLY (1 << 1) |
| #define ARM_SMMU_OPT_MSIPOLL (1 << 2) |
| #define ARM_SMMU_OPT_CMDQ_FORCE_SYNC (1 << 3) |
| u32 options; |
| |
| struct arm_smmu_cmdq cmdq; |
| struct arm_smmu_evtq evtq; |
| struct arm_smmu_priq priq; |
| |
| int gerr_irq; |
| int combined_irq; |
| |
| unsigned long ias; /* IPA */ |
| unsigned long oas; /* PA */ |
| unsigned long pgsize_bitmap; |
| |
| #define ARM_SMMU_MAX_ASIDS (1 << 16) |
| unsigned int asid_bits; |
| |
| #define ARM_SMMU_MAX_VMIDS (1 << 16) |
| unsigned int vmid_bits; |
| struct ida vmid_map; |
| |
| unsigned int ssid_bits; |
| unsigned int sid_bits; |
| |
| struct arm_smmu_strtab_cfg strtab_cfg; |
| |
| /* IOMMU core code handle */ |
| struct iommu_device iommu; |
| |
| struct rb_root streams; |
| struct mutex streams_mutex; |
| }; |
| |
| struct arm_smmu_stream { |
| u32 id; |
| struct arm_smmu_master *master; |
| struct rb_node node; |
| }; |
| |
| /* SMMU private data for each master */ |
| struct arm_smmu_master { |
| struct arm_smmu_device *smmu; |
| struct device *dev; |
| struct list_head domain_head; |
| struct arm_smmu_stream *streams; |
| /* Locked by the iommu core using the group mutex */ |
| struct arm_smmu_ctx_desc_cfg cd_table; |
| unsigned int num_streams; |
| bool ats_enabled; |
| bool stall_enabled; |
| bool sva_enabled; |
| bool iopf_enabled; |
| struct list_head bonds; |
| unsigned int ssid_bits; |
| }; |
| |
| /* SMMU private data for an IOMMU domain */ |
| enum arm_smmu_domain_stage { |
| ARM_SMMU_DOMAIN_S1 = 0, |
| ARM_SMMU_DOMAIN_S2, |
| }; |
| |
| struct arm_smmu_domain { |
| struct arm_smmu_device *smmu; |
| struct mutex init_mutex; /* Protects smmu pointer */ |
| |
| struct io_pgtable_ops *pgtbl_ops; |
| atomic_t nr_ats_masters; |
| |
| enum arm_smmu_domain_stage stage; |
| union { |
| struct arm_smmu_ctx_desc cd; |
| struct arm_smmu_s2_cfg s2_cfg; |
| }; |
| |
| struct iommu_domain domain; |
| |
| struct list_head devices; |
| spinlock_t devices_lock; |
| |
| struct list_head mmu_notifiers; |
| }; |
| |
| static inline struct arm_smmu_domain *to_smmu_domain(struct iommu_domain *dom) |
| { |
| return container_of(dom, struct arm_smmu_domain, domain); |
| } |
| |
| extern struct xarray arm_smmu_asid_xa; |
| extern struct mutex arm_smmu_asid_lock; |
| extern struct arm_smmu_ctx_desc quiet_cd; |
| |
| int arm_smmu_write_ctx_desc(struct arm_smmu_master *smmu_master, int ssid, |
| struct arm_smmu_ctx_desc *cd); |
| void arm_smmu_tlb_inv_asid(struct arm_smmu_device *smmu, u16 asid); |
| void arm_smmu_tlb_inv_range_asid(unsigned long iova, size_t size, int asid, |
| size_t granule, bool leaf, |
| struct arm_smmu_domain *smmu_domain); |
| bool arm_smmu_free_asid(struct arm_smmu_ctx_desc *cd); |
| int arm_smmu_atc_inv_domain(struct arm_smmu_domain *smmu_domain, int ssid, |
| unsigned long iova, size_t size); |
| |
| #ifdef CONFIG_ARM_SMMU_V3_SVA |
| bool arm_smmu_sva_supported(struct arm_smmu_device *smmu); |
| bool arm_smmu_master_sva_supported(struct arm_smmu_master *master); |
| bool arm_smmu_master_sva_enabled(struct arm_smmu_master *master); |
| int arm_smmu_master_enable_sva(struct arm_smmu_master *master); |
| int arm_smmu_master_disable_sva(struct arm_smmu_master *master); |
| bool arm_smmu_master_iopf_supported(struct arm_smmu_master *master); |
| void arm_smmu_sva_notifier_synchronize(void); |
| struct iommu_domain *arm_smmu_sva_domain_alloc(void); |
| void arm_smmu_sva_remove_dev_pasid(struct iommu_domain *domain, |
| struct device *dev, ioasid_t id); |
| #else /* CONFIG_ARM_SMMU_V3_SVA */ |
| static inline bool arm_smmu_sva_supported(struct arm_smmu_device *smmu) |
| { |
| return false; |
| } |
| |
| static inline bool arm_smmu_master_sva_supported(struct arm_smmu_master *master) |
| { |
| return false; |
| } |
| |
| static inline bool arm_smmu_master_sva_enabled(struct arm_smmu_master *master) |
| { |
| return false; |
| } |
| |
| static inline int arm_smmu_master_enable_sva(struct arm_smmu_master *master) |
| { |
| return -ENODEV; |
| } |
| |
| static inline int arm_smmu_master_disable_sva(struct arm_smmu_master *master) |
| { |
| return -ENODEV; |
| } |
| |
| static inline bool arm_smmu_master_iopf_supported(struct arm_smmu_master *master) |
| { |
| return false; |
| } |
| |
| static inline void arm_smmu_sva_notifier_synchronize(void) {} |
| |
| static inline struct iommu_domain *arm_smmu_sva_domain_alloc(void) |
| { |
| return NULL; |
| } |
| |
| static inline void arm_smmu_sva_remove_dev_pasid(struct iommu_domain *domain, |
| struct device *dev, |
| ioasid_t id) |
| { |
| } |
| #endif /* CONFIG_ARM_SMMU_V3_SVA */ |
| #endif /* _ARM_SMMU_V3_H */ |
