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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v4 04/10] xen/arm: smmuv3: Move definitions to a header
From: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx> Backport Linux commit e881e7839fba. Also, move Xen related struct definition to header to get it compiled. Allow sharing structure definitions with the upcoming SVA support for Arm SMMUv3, by moving them to a separate header. We could surgically extract only what is needed but keeping all definitions in one place looks nicer. Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx> Reviewed-by: Eric Auger <eric.auger@xxxxxxxxxx> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Link: https://lore.kernel.org/r/20200918101852.582559-8-jean-philippe@xxxxxxxxxx Signed-off-by: Will Deacon <will@xxxxxxxxxx> Origin: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git e881e7839fba Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx> Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> --- Changes in v4: - Added Stefano Acked-by Changes in v3: - remove clean backport msg in commit msg Changes in v2: - fix commit msg - also move struct definition to header file to sync with Linux patch --- xen/drivers/passthrough/arm/smmu-v3.c | 665 +------------------------ xen/drivers/passthrough/arm/smmu-v3.h | 674 ++++++++++++++++++++++++++ 2 files changed, 675 insertions(+), 664 deletions(-) create mode 100644 xen/drivers/passthrough/arm/smmu-v3.h diff --git a/xen/drivers/passthrough/arm/smmu-v3.c b/xen/drivers/passthrough/arm/smmu-v3.c index 229b9a4b0d..ba24a26ad6 100644 --- a/xen/drivers/passthrough/arm/smmu-v3.c +++ b/xen/drivers/passthrough/arm/smmu-v3.c @@ -90,6 +90,7 @@ #include <asm/iommu_fwspec.h> #include <asm/platform.h> +#include "smmu-v3.h" #define ARM_SMMU_VTCR_SH_IS 3 #define ARM_SMMU_VTCR_RGN_WBWA 1 @@ -103,22 +104,12 @@ #define ARM_SMMU_VTCR_PS_52_BIT 0x6ULL /* Linux compatibility functions. */ -typedef paddr_t dma_addr_t; -typedef paddr_t phys_addr_t; -typedef unsigned int gfp_t; - #define __iomb() dmb(osh) #define platform_device device #define GFP_KERNEL 0 -/* Alias to Xen lock functions */ -#define mutex spinlock -#define mutex_init spin_lock_init -#define mutex_lock spin_lock -#define mutex_unlock spin_unlock - /* Device logger functions */ #define dev_name(dev) dt_node_full_name(dev->of_node) #define dev_dbg(dev, fmt, ...) \ @@ -159,12 +150,6 @@ typedef unsigned int gfp_t; #define readl_relaxed_poll_timeout(addr, val, cond, delay_us, timeout_us) \ readx_poll_timeout(readl_relaxed, addr, val, cond, delay_us, timeout_us) -#define FIELD_PREP(_mask, _val) \ - (((typeof(_mask))(_val) << (ffs64(_mask) - 1)) & (_mask)) - -#define FIELD_GET(_mask, _reg) \ - ((typeof(_mask))(((_reg) & (_mask)) >> (ffs64(_mask) - 1))) - /* * Helpers for DMA allocation. Just the function name is reused for * porting code, these allocation are not managed allocations @@ -197,27 +182,6 @@ static void *dmam_alloc_coherent(struct device *dev, size_t size, return vaddr; } - -/* Xen specific code. */ -struct iommu_domain { - /* Runtime SMMU configuration for this iommu_domain */ - atomic_t ref; - /* - * Used to link iommu_domain contexts for a same domain. - * There is at least one per-SMMU to used by the domain. - */ - struct list_head list; -}; - -/* Describes information required for a Xen domain */ -struct arm_smmu_xen_domain { - spinlock_t lock; - - /* List of iommu domains associated to this domain */ - struct list_head contexts; -}; - - /* Keep a list of devices associated with this driver */ static DEFINE_SPINLOCK(arm_smmu_devices_lock); static LIST_HEAD(arm_smmu_devices); @@ -261,635 +225,8 @@ static int platform_get_irq_byname_optional(struct device *dev, } /* Start of Linux SMMUv3 code */ -/* 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_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_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 (1U << 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 0xfd - -#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 0x100a8 -#define ARM_SMMU_EVTQ_CONS 0x100ac -#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 0x100c8 -#define ARM_SMMU_PRIQ_CONS 0x100cc -#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_ORDER - 1) -#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 -#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_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_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_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_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) - -/* 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 100 -#define ARM_SMMU_CMDQ_SYNC_TIMEOUT_US 1000000 /* 1s! */ -#define ARM_SMMU_CMDQ_SYNC_SPIN_COUNT 10 - static bool disable_bypass = 1; -enum pri_resp { - PRI_RESP_DENY = 0, - PRI_RESP_FAIL = 1, - PRI_RESP_SUCC = 2, -}; - -#ifdef CONFIG_MSI -enum arm_smmu_msi_index { - EVTQ_MSI_INDEX, - GERROR_MSI_INDEX, - PRIQ_MSI_INDEX, - ARM_SMMU_MAX_MSIS, -}; - -static phys_addr_t arm_smmu_msi_cfg[ARM_SMMU_MAX_MSIS][3] = { - [EVTQ_MSI_INDEX] = { - ARM_SMMU_EVTQ_IRQ_CFG0, - ARM_SMMU_EVTQ_IRQ_CFG1, - ARM_SMMU_EVTQ_IRQ_CFG2, - }, - [GERROR_MSI_INDEX] = { - ARM_SMMU_GERROR_IRQ_CFG0, - ARM_SMMU_GERROR_IRQ_CFG1, - ARM_SMMU_GERROR_IRQ_CFG2, - }, - [PRIQ_MSI_INDEX] = { - ARM_SMMU_PRIQ_IRQ_CFG0, - ARM_SMMU_PRIQ_IRQ_CFG1, - ARM_SMMU_PRIQ_IRQ_CFG2, - }, -}; -#endif /* CONFIG_MSI */ - -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; - u8 size; - u64 addr; - } prefetch; - - #define CMDQ_OP_CFGI_STE 0x3 - #define CMDQ_OP_CFGI_ALL 0x4 - struct { - u32 sid; - union { - bool leaf; - u8 span; - }; - } cfgi; - - #define CMDQ_OP_TLBI_EL2_ALL 0x20 - #define CMDQ_OP_TLBI_S12_VMALL 0x28 - #define CMDQ_OP_TLBI_S2_IPA 0x2a - #define CMDQ_OP_TLBI_NSNH_ALL 0x30 - struct { - u16 asid; - u16 vmid; - bool leaf; - 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_CMD_SYNC 0x46 - struct { - u32 msidata; - u64 msiaddr; - } sync; - }; -}; - -struct arm_smmu_ll_queue { - u32 prod; - u32 cons; - 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_cmdq { - struct arm_smmu_queue q; - spinlock_t lock; -}; - -struct arm_smmu_evtq { - struct arm_smmu_queue q; - 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; - - __le64 *l2ptr; - dma_addr_t l2ptr_dma; -}; - -struct arm_smmu_s2_cfg { - u16 vmid; - u64 vttbr; - u64 vtcr; -}; - -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; -}; - -struct arm_lpae_s2_cfg { - u64 vttbr; - struct { - u32 ps:3; - u32 tg:2; - u32 sh:2; - u32 orgn:2; - u32 irgn:2; - u32 sl:2; - u32 tsz:6; - } vtcr; -}; - -/* 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) - u32 features; - -#define ARM_SMMU_OPT_SKIP_PREFETCH (1 << 0) -#define ARM_SMMU_OPT_PAGE0_REGS_ONLY (1 << 1) - u32 options; - - struct arm_smmu_cmdq cmdq; - struct arm_smmu_evtq evtq; - struct arm_smmu_priq priq; - - int gerr_irq; - int combined_irq; - u32 sync_nr; - u8 prev_cmd_opcode; - - unsigned long ias; /* IPA */ - unsigned long oas; /* PA */ - unsigned long pgsize_bitmap; - -#define ARM_SMMU_MAX_VMIDS (1 << 16) - unsigned int vmid_bits; - DECLARE_BITMAP(vmid_map, ARM_SMMU_MAX_VMIDS); - - unsigned int sid_bits; - - struct arm_smmu_strtab_cfg strtab_cfg; - - /* Hi16xx adds an extra 32 bits of goodness to its MSI payload */ - union { - u32 sync_count; - u64 padding; - }; - - /* Need to keep a list of SMMU devices */ - struct list_head devices; - - /* Tasklets for handling evts/faults and pci page request IRQs*/ - struct tasklet evtq_irq_tasklet; - struct tasklet priq_irq_tasklet; - struct tasklet combined_irq_tasklet; -}; - -/* SMMU private data for each master */ -struct arm_smmu_master { - struct arm_smmu_device *smmu; - struct device *dev; - struct arm_smmu_domain *domain; - struct list_head domain_head; - u32 *sids; - unsigned int num_sids; - bool ats_enabled; -}; - -/* SMMU private data for an IOMMU domain */ -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 mutex init_mutex; /* Protects smmu pointer */ - - bool non_strict; - atomic_t nr_ats_masters; - - enum arm_smmu_domain_stage stage; - struct arm_smmu_s2_cfg s2_cfg; - - /* Xen domain associated with this SMMU domain */ - struct domain *d; - - struct iommu_domain domain; - - struct list_head devices; - spinlock_t devices_lock; -}; - struct arm_smmu_option_prop { u32 opt; const char *prop; diff --git a/xen/drivers/passthrough/arm/smmu-v3.h b/xen/drivers/passthrough/arm/smmu-v3.h new file mode 100644 index 0000000000..c45d2f16c4 --- /dev/null +++ b/xen/drivers/passthrough/arm/smmu-v3.h @@ -0,0 +1,674 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * IOMMU API for ARM architected SMMUv3 implementations. + * + * Copyright (C) 2022 ARM Limited + */ + +#ifndef _ARM_SMMU_V3_H +#define _ARM_SMMU_V3_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_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_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 0xfd + +#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 0x100a8 +#define ARM_SMMU_EVTQ_CONS 0x100ac +#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 0x100c8 +#define ARM_SMMU_PRIQ_CONS 0x100cc +#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 (1 << 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_ORDER - 1) +#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 +#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_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_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_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_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) + +/* 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 100 +#define ARM_SMMU_CMDQ_SYNC_TIMEOUT_US 1000000 /* 1s! */ +#define ARM_SMMU_CMDQ_SYNC_SPIN_COUNT 10 + +#define FIELD_PREP(_mask, _val) \ + (((typeof(_mask))(_val) << (ffs64(_mask) - 1)) & (_mask)) + +#define FIELD_GET(_mask, _reg) \ + ((typeof(_mask))(((_reg) & (_mask)) >> (ffs64(_mask) - 1))) + +/* Linux compatibility functions. */ +typedef paddr_t dma_addr_t; +typedef paddr_t phys_addr_t; +typedef unsigned int gfp_t; + +/* Alias to Xen lock functions */ +#define mutex spinlock +#define mutex_init spin_lock_init +#define mutex_lock spin_lock +#define mutex_unlock spin_unlock + +/* SMMU private data for an IOMMU domain */ +enum arm_smmu_domain_stage { + ARM_SMMU_DOMAIN_S1 = 0, + ARM_SMMU_DOMAIN_S2, + ARM_SMMU_DOMAIN_NESTED, + ARM_SMMU_DOMAIN_BYPASS, +}; + +/* Xen specific code. */ +struct iommu_domain { + /* Runtime SMMU configuration for this iommu_domain */ + atomic_t ref; + /* + * Used to link iommu_domain contexts for a same domain. + * There is at least one per-SMMU to used by the domain. + */ + struct list_head list; +}; + +/* Describes information required for a Xen domain */ +struct arm_smmu_xen_domain { + spinlock_t lock; + + /* List of iommu domains associated to this domain */ + struct list_head contexts; +}; + +enum pri_resp { + PRI_RESP_DENY = 0, + PRI_RESP_FAIL = 1, + PRI_RESP_SUCC = 2, +}; + +#ifdef CONFIG_MSI +enum arm_smmu_msi_index { + EVTQ_MSI_INDEX, + GERROR_MSI_INDEX, + PRIQ_MSI_INDEX, + ARM_SMMU_MAX_MSIS, +}; + +static phys_addr_t arm_smmu_msi_cfg[ARM_SMMU_MAX_MSIS][3] = { + [EVTQ_MSI_INDEX] = { + ARM_SMMU_EVTQ_IRQ_CFG0, + ARM_SMMU_EVTQ_IRQ_CFG1, + ARM_SMMU_EVTQ_IRQ_CFG2, + }, + [GERROR_MSI_INDEX] = { + ARM_SMMU_GERROR_IRQ_CFG0, + ARM_SMMU_GERROR_IRQ_CFG1, + ARM_SMMU_GERROR_IRQ_CFG2, + }, + [PRIQ_MSI_INDEX] = { + ARM_SMMU_PRIQ_IRQ_CFG0, + ARM_SMMU_PRIQ_IRQ_CFG1, + ARM_SMMU_PRIQ_IRQ_CFG2, + }, +}; +#endif /* CONFIG_MSI */ + +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; + u8 size; + u64 addr; + } prefetch; + + #define CMDQ_OP_CFGI_STE 0x3 + #define CMDQ_OP_CFGI_ALL 0x4 + struct { + u32 sid; + union { + bool leaf; + u8 span; + }; + } cfgi; + + #define CMDQ_OP_TLBI_EL2_ALL 0x20 + #define CMDQ_OP_TLBI_S12_VMALL 0x28 + #define CMDQ_OP_TLBI_S2_IPA 0x2a + #define CMDQ_OP_TLBI_NSNH_ALL 0x30 + struct { + u16 asid; + u16 vmid; + bool leaf; + 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_CMD_SYNC 0x46 + struct { + u32 msidata; + u64 msiaddr; + } sync; + }; +}; + +struct arm_smmu_ll_queue { + u32 prod; + u32 cons; + 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_cmdq { + struct arm_smmu_queue q; + spinlock_t lock; +}; + +struct arm_smmu_evtq { + struct arm_smmu_queue q; + 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; + + __le64 *l2ptr; + dma_addr_t l2ptr_dma; +}; + +struct arm_smmu_s2_cfg { + u16 vmid; + u64 vttbr; + u64 vtcr; +}; + +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; +}; + +struct arm_lpae_s2_cfg { + u64 vttbr; + struct { + u32 ps:3; + u32 tg:2; + u32 sh:2; + u32 orgn:2; + u32 irgn:2; + u32 sl:2; + u32 tsz:6; + } vtcr; +}; + +/* 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) + u32 features; + +#define ARM_SMMU_OPT_SKIP_PREFETCH (1 << 0) +#define ARM_SMMU_OPT_PAGE0_REGS_ONLY (1 << 1) + u32 options; + + struct arm_smmu_cmdq cmdq; + struct arm_smmu_evtq evtq; + struct arm_smmu_priq priq; + + int gerr_irq; + int combined_irq; + u32 sync_nr; + u8 prev_cmd_opcode; + + unsigned long ias; /* IPA */ + unsigned long oas; /* PA */ + unsigned long pgsize_bitmap; + +#define ARM_SMMU_MAX_VMIDS (1 << 16) + unsigned int vmid_bits; + DECLARE_BITMAP(vmid_map, ARM_SMMU_MAX_VMIDS); + + unsigned int sid_bits; + + struct arm_smmu_strtab_cfg strtab_cfg; + + /* Hi16xx adds an extra 32 bits of goodness to its MSI payload */ + union { + u32 sync_count; + u64 padding; + }; + + /* Need to keep a list of SMMU devices */ + struct list_head devices; + + /* Tasklets for handling evts/faults and pci page request IRQs*/ + struct tasklet evtq_irq_tasklet; + struct tasklet priq_irq_tasklet; + struct tasklet combined_irq_tasklet; +}; + +/* SMMU private data for each master */ +struct arm_smmu_master { + struct arm_smmu_device *smmu; + struct device *dev; + struct arm_smmu_domain *domain; + struct list_head domain_head; + u32 *sids; + unsigned int num_sids; + bool ats_enabled; +}; + +struct arm_smmu_domain { + struct arm_smmu_device *smmu; + struct mutex init_mutex; /* Protects smmu pointer */ + + bool non_strict; + atomic_t nr_ats_masters; + + enum arm_smmu_domain_stage stage; + struct arm_smmu_s2_cfg s2_cfg; + + /* Xen domain associated with this SMMU domain */ + struct domain *d; + + struct iommu_domain domain; + + struct list_head devices; + spinlock_t devices_lock; +}; + +#endif /* _ARM_SMMU_V3_H */ -- 2.25.1
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