| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. |
| * Author: Joerg Roedel <jroedel@suse.de> |
| * Leo Duran <leo.duran@amd.com> |
| */ |
| |
| #ifndef _ASM_X86_AMD_IOMMU_TYPES_H |
| #define _ASM_X86_AMD_IOMMU_TYPES_H |
| |
| #include <linux/types.h> |
| #include <linux/mutex.h> |
| #include <linux/msi.h> |
| #include <linux/list.h> |
| #include <linux/spinlock.h> |
| #include <linux/pci.h> |
| #include <linux/irqreturn.h> |
| #include <linux/io-pgtable.h> |
| |
| /* |
| * Maximum number of IOMMUs supported |
| */ |
| #define MAX_IOMMUS 32 |
| |
| /* |
| * some size calculation constants |
| */ |
| #define DEV_TABLE_ENTRY_SIZE 32 |
| #define ALIAS_TABLE_ENTRY_SIZE 2 |
| #define RLOOKUP_TABLE_ENTRY_SIZE (sizeof(void *)) |
| |
| /* Capability offsets used by the driver */ |
| #define MMIO_CAP_HDR_OFFSET 0x00 |
| #define MMIO_RANGE_OFFSET 0x0c |
| #define MMIO_MISC_OFFSET 0x10 |
| |
| /* Masks, shifts and macros to parse the device range capability */ |
| #define MMIO_RANGE_LD_MASK 0xff000000 |
| #define MMIO_RANGE_FD_MASK 0x00ff0000 |
| #define MMIO_RANGE_BUS_MASK 0x0000ff00 |
| #define MMIO_RANGE_LD_SHIFT 24 |
| #define MMIO_RANGE_FD_SHIFT 16 |
| #define MMIO_RANGE_BUS_SHIFT 8 |
| #define MMIO_GET_LD(x) (((x) & MMIO_RANGE_LD_MASK) >> MMIO_RANGE_LD_SHIFT) |
| #define MMIO_GET_FD(x) (((x) & MMIO_RANGE_FD_MASK) >> MMIO_RANGE_FD_SHIFT) |
| #define MMIO_GET_BUS(x) (((x) & MMIO_RANGE_BUS_MASK) >> MMIO_RANGE_BUS_SHIFT) |
| #define MMIO_MSI_NUM(x) ((x) & 0x1f) |
| |
| /* Flag masks for the AMD IOMMU exclusion range */ |
| #define MMIO_EXCL_ENABLE_MASK 0x01ULL |
| #define MMIO_EXCL_ALLOW_MASK 0x02ULL |
| |
| /* Used offsets into the MMIO space */ |
| #define MMIO_DEV_TABLE_OFFSET 0x0000 |
| #define MMIO_CMD_BUF_OFFSET 0x0008 |
| #define MMIO_EVT_BUF_OFFSET 0x0010 |
| #define MMIO_CONTROL_OFFSET 0x0018 |
| #define MMIO_EXCL_BASE_OFFSET 0x0020 |
| #define MMIO_EXCL_LIMIT_OFFSET 0x0028 |
| #define MMIO_EXT_FEATURES 0x0030 |
| #define MMIO_PPR_LOG_OFFSET 0x0038 |
| #define MMIO_GA_LOG_BASE_OFFSET 0x00e0 |
| #define MMIO_GA_LOG_TAIL_OFFSET 0x00e8 |
| #define MMIO_MSI_ADDR_LO_OFFSET 0x015C |
| #define MMIO_MSI_ADDR_HI_OFFSET 0x0160 |
| #define MMIO_MSI_DATA_OFFSET 0x0164 |
| #define MMIO_INTCAPXT_EVT_OFFSET 0x0170 |
| #define MMIO_INTCAPXT_PPR_OFFSET 0x0178 |
| #define MMIO_INTCAPXT_GALOG_OFFSET 0x0180 |
| #define MMIO_EXT_FEATURES2 0x01A0 |
| #define MMIO_CMD_HEAD_OFFSET 0x2000 |
| #define MMIO_CMD_TAIL_OFFSET 0x2008 |
| #define MMIO_EVT_HEAD_OFFSET 0x2010 |
| #define MMIO_EVT_TAIL_OFFSET 0x2018 |
| #define MMIO_STATUS_OFFSET 0x2020 |
| #define MMIO_PPR_HEAD_OFFSET 0x2030 |
| #define MMIO_PPR_TAIL_OFFSET 0x2038 |
| #define MMIO_GA_HEAD_OFFSET 0x2040 |
| #define MMIO_GA_TAIL_OFFSET 0x2048 |
| #define MMIO_CNTR_CONF_OFFSET 0x4000 |
| #define MMIO_CNTR_REG_OFFSET 0x40000 |
| #define MMIO_REG_END_OFFSET 0x80000 |
| |
| |
| |
| /* Extended Feature Bits */ |
| #define FEATURE_PREFETCH BIT_ULL(0) |
| #define FEATURE_PPR BIT_ULL(1) |
| #define FEATURE_X2APIC BIT_ULL(2) |
| #define FEATURE_NX BIT_ULL(3) |
| #define FEATURE_GT BIT_ULL(4) |
| #define FEATURE_IA BIT_ULL(6) |
| #define FEATURE_GA BIT_ULL(7) |
| #define FEATURE_HE BIT_ULL(8) |
| #define FEATURE_PC BIT_ULL(9) |
| #define FEATURE_GATS_SHIFT (12) |
| #define FEATURE_GATS_MASK (3ULL) |
| #define FEATURE_GAM_VAPIC BIT_ULL(21) |
| #define FEATURE_GIOSUP BIT_ULL(48) |
| #define FEATURE_HASUP BIT_ULL(49) |
| #define FEATURE_EPHSUP BIT_ULL(50) |
| #define FEATURE_HDSUP BIT_ULL(52) |
| #define FEATURE_SNP BIT_ULL(63) |
| |
| #define FEATURE_PASID_SHIFT 32 |
| #define FEATURE_PASID_MASK (0x1fULL << FEATURE_PASID_SHIFT) |
| |
| #define FEATURE_GLXVAL_SHIFT 14 |
| #define FEATURE_GLXVAL_MASK (0x03ULL << FEATURE_GLXVAL_SHIFT) |
| |
| /* Extended Feature 2 Bits */ |
| #define FEATURE_SNPAVICSUP_SHIFT 5 |
| #define FEATURE_SNPAVICSUP_MASK (0x07ULL << FEATURE_SNPAVICSUP_SHIFT) |
| #define FEATURE_SNPAVICSUP_GAM(x) \ |
| ((x & FEATURE_SNPAVICSUP_MASK) >> FEATURE_SNPAVICSUP_SHIFT == 0x1) |
| |
| /* Note: |
| * The current driver only support 16-bit PASID. |
| * Currently, hardware only implement upto 16-bit PASID |
| * even though the spec says it could have upto 20 bits. |
| */ |
| #define PASID_MASK 0x0000ffff |
| |
| /* MMIO status bits */ |
| #define MMIO_STATUS_EVT_OVERFLOW_MASK BIT(0) |
| #define MMIO_STATUS_EVT_INT_MASK BIT(1) |
| #define MMIO_STATUS_COM_WAIT_INT_MASK BIT(2) |
| #define MMIO_STATUS_EVT_RUN_MASK BIT(3) |
| #define MMIO_STATUS_PPR_OVERFLOW_MASK BIT(5) |
| #define MMIO_STATUS_PPR_INT_MASK BIT(6) |
| #define MMIO_STATUS_PPR_RUN_MASK BIT(7) |
| #define MMIO_STATUS_GALOG_RUN_MASK BIT(8) |
| #define MMIO_STATUS_GALOG_OVERFLOW_MASK BIT(9) |
| #define MMIO_STATUS_GALOG_INT_MASK BIT(10) |
| |
| /* event logging constants */ |
| #define EVENT_ENTRY_SIZE 0x10 |
| #define EVENT_TYPE_SHIFT 28 |
| #define EVENT_TYPE_MASK 0xf |
| #define EVENT_TYPE_ILL_DEV 0x1 |
| #define EVENT_TYPE_IO_FAULT 0x2 |
| #define EVENT_TYPE_DEV_TAB_ERR 0x3 |
| #define EVENT_TYPE_PAGE_TAB_ERR 0x4 |
| #define EVENT_TYPE_ILL_CMD 0x5 |
| #define EVENT_TYPE_CMD_HARD_ERR 0x6 |
| #define EVENT_TYPE_IOTLB_INV_TO 0x7 |
| #define EVENT_TYPE_INV_DEV_REQ 0x8 |
| #define EVENT_TYPE_INV_PPR_REQ 0x9 |
| #define EVENT_TYPE_RMP_FAULT 0xd |
| #define EVENT_TYPE_RMP_HW_ERR 0xe |
| #define EVENT_DEVID_MASK 0xffff |
| #define EVENT_DEVID_SHIFT 0 |
| #define EVENT_DOMID_MASK_LO 0xffff |
| #define EVENT_DOMID_MASK_HI 0xf0000 |
| #define EVENT_FLAGS_MASK 0xfff |
| #define EVENT_FLAGS_SHIFT 0x10 |
| #define EVENT_FLAG_RW 0x020 |
| #define EVENT_FLAG_I 0x008 |
| |
| /* feature control bits */ |
| #define CONTROL_IOMMU_EN 0 |
| #define CONTROL_HT_TUN_EN 1 |
| #define CONTROL_EVT_LOG_EN 2 |
| #define CONTROL_EVT_INT_EN 3 |
| #define CONTROL_COMWAIT_EN 4 |
| #define CONTROL_INV_TIMEOUT 5 |
| #define CONTROL_PASSPW_EN 8 |
| #define CONTROL_RESPASSPW_EN 9 |
| #define CONTROL_COHERENT_EN 10 |
| #define CONTROL_ISOC_EN 11 |
| #define CONTROL_CMDBUF_EN 12 |
| #define CONTROL_PPRLOG_EN 13 |
| #define CONTROL_PPRINT_EN 14 |
| #define CONTROL_PPR_EN 15 |
| #define CONTROL_GT_EN 16 |
| #define CONTROL_GA_EN 17 |
| #define CONTROL_GAM_EN 25 |
| #define CONTROL_GALOG_EN 28 |
| #define CONTROL_GAINT_EN 29 |
| #define CONTROL_XT_EN 50 |
| #define CONTROL_INTCAPXT_EN 51 |
| #define CONTROL_IRTCACHEDIS 59 |
| #define CONTROL_SNPAVIC_EN 61 |
| |
| #define CTRL_INV_TO_MASK (7 << CONTROL_INV_TIMEOUT) |
| #define CTRL_INV_TO_NONE 0 |
| #define CTRL_INV_TO_1MS 1 |
| #define CTRL_INV_TO_10MS 2 |
| #define CTRL_INV_TO_100MS 3 |
| #define CTRL_INV_TO_1S 4 |
| #define CTRL_INV_TO_10S 5 |
| #define CTRL_INV_TO_100S 6 |
| |
| /* command specific defines */ |
| #define CMD_COMPL_WAIT 0x01 |
| #define CMD_INV_DEV_ENTRY 0x02 |
| #define CMD_INV_IOMMU_PAGES 0x03 |
| #define CMD_INV_IOTLB_PAGES 0x04 |
| #define CMD_INV_IRT 0x05 |
| #define CMD_COMPLETE_PPR 0x07 |
| #define CMD_INV_ALL 0x08 |
| |
| #define CMD_COMPL_WAIT_STORE_MASK 0x01 |
| #define CMD_COMPL_WAIT_INT_MASK 0x02 |
| #define CMD_INV_IOMMU_PAGES_SIZE_MASK 0x01 |
| #define CMD_INV_IOMMU_PAGES_PDE_MASK 0x02 |
| #define CMD_INV_IOMMU_PAGES_GN_MASK 0x04 |
| |
| #define PPR_STATUS_MASK 0xf |
| #define PPR_STATUS_SHIFT 12 |
| |
| #define CMD_INV_IOMMU_ALL_PAGES_ADDRESS 0x7fffffffffffffffULL |
| |
| /* macros and definitions for device table entries */ |
| #define DEV_ENTRY_VALID 0x00 |
| #define DEV_ENTRY_TRANSLATION 0x01 |
| #define DEV_ENTRY_HAD 0x07 |
| #define DEV_ENTRY_PPR 0x34 |
| #define DEV_ENTRY_IR 0x3d |
| #define DEV_ENTRY_IW 0x3e |
| #define DEV_ENTRY_NO_PAGE_FAULT 0x62 |
| #define DEV_ENTRY_EX 0x67 |
| #define DEV_ENTRY_SYSMGT1 0x68 |
| #define DEV_ENTRY_SYSMGT2 0x69 |
| #define DEV_ENTRY_IRQ_TBL_EN 0x80 |
| #define DEV_ENTRY_INIT_PASS 0xb8 |
| #define DEV_ENTRY_EINT_PASS 0xb9 |
| #define DEV_ENTRY_NMI_PASS 0xba |
| #define DEV_ENTRY_LINT0_PASS 0xbe |
| #define DEV_ENTRY_LINT1_PASS 0xbf |
| #define DEV_ENTRY_MODE_MASK 0x07 |
| #define DEV_ENTRY_MODE_SHIFT 0x09 |
| |
| #define MAX_DEV_TABLE_ENTRIES 0xffff |
| |
| /* constants to configure the command buffer */ |
| #define CMD_BUFFER_SIZE 8192 |
| #define CMD_BUFFER_UNINITIALIZED 1 |
| #define CMD_BUFFER_ENTRIES 512 |
| #define MMIO_CMD_SIZE_SHIFT 56 |
| #define MMIO_CMD_SIZE_512 (0x9ULL << MMIO_CMD_SIZE_SHIFT) |
| |
| /* constants for event buffer handling */ |
| #define EVT_BUFFER_SIZE 8192 /* 512 entries */ |
| #define EVT_LEN_MASK (0x9ULL << 56) |
| |
| /* Constants for PPR Log handling */ |
| #define PPR_LOG_ENTRIES 512 |
| #define PPR_LOG_SIZE_SHIFT 56 |
| #define PPR_LOG_SIZE_512 (0x9ULL << PPR_LOG_SIZE_SHIFT) |
| #define PPR_ENTRY_SIZE 16 |
| #define PPR_LOG_SIZE (PPR_ENTRY_SIZE * PPR_LOG_ENTRIES) |
| |
| #define PPR_REQ_TYPE(x) (((x) >> 60) & 0xfULL) |
| #define PPR_FLAGS(x) (((x) >> 48) & 0xfffULL) |
| #define PPR_DEVID(x) ((x) & 0xffffULL) |
| #define PPR_TAG(x) (((x) >> 32) & 0x3ffULL) |
| #define PPR_PASID1(x) (((x) >> 16) & 0xffffULL) |
| #define PPR_PASID2(x) (((x) >> 42) & 0xfULL) |
| #define PPR_PASID(x) ((PPR_PASID2(x) << 16) | PPR_PASID1(x)) |
| |
| #define PPR_REQ_FAULT 0x01 |
| |
| /* Constants for GA Log handling */ |
| #define GA_LOG_ENTRIES 512 |
| #define GA_LOG_SIZE_SHIFT 56 |
| #define GA_LOG_SIZE_512 (0x8ULL << GA_LOG_SIZE_SHIFT) |
| #define GA_ENTRY_SIZE 8 |
| #define GA_LOG_SIZE (GA_ENTRY_SIZE * GA_LOG_ENTRIES) |
| |
| #define GA_TAG(x) (u32)(x & 0xffffffffULL) |
| #define GA_DEVID(x) (u16)(((x) >> 32) & 0xffffULL) |
| #define GA_REQ_TYPE(x) (((x) >> 60) & 0xfULL) |
| |
| #define GA_GUEST_NR 0x1 |
| |
| #define IOMMU_IN_ADDR_BIT_SIZE 52 |
| #define IOMMU_OUT_ADDR_BIT_SIZE 52 |
| |
| /* |
| * This bitmap is used to advertise the page sizes our hardware support |
| * to the IOMMU core, which will then use this information to split |
| * physically contiguous memory regions it is mapping into page sizes |
| * that we support. |
| * |
| * 512GB Pages are not supported due to a hardware bug |
| */ |
| #define AMD_IOMMU_PGSIZES ((~0xFFFUL) & ~(2ULL << 38)) |
| /* 4K, 2MB, 1G page sizes are supported */ |
| #define AMD_IOMMU_PGSIZES_V2 (PAGE_SIZE | (1ULL << 21) | (1ULL << 30)) |
| |
| /* Bit value definition for dte irq remapping fields*/ |
| #define DTE_IRQ_PHYS_ADDR_MASK GENMASK_ULL(51, 6) |
| #define DTE_IRQ_REMAP_INTCTL_MASK (0x3ULL << 60) |
| #define DTE_IRQ_REMAP_INTCTL (2ULL << 60) |
| #define DTE_IRQ_REMAP_ENABLE 1ULL |
| |
| /* |
| * AMD IOMMU hardware only support 512 IRTEs despite |
| * the architectural limitation of 2048 entries. |
| */ |
| #define DTE_INTTAB_ALIGNMENT 128 |
| #define DTE_INTTABLEN_VALUE 9ULL |
| #define DTE_INTTABLEN (DTE_INTTABLEN_VALUE << 1) |
| #define DTE_INTTABLEN_MASK (0xfULL << 1) |
| #define MAX_IRQS_PER_TABLE (1 << DTE_INTTABLEN_VALUE) |
| |
| #define PAGE_MODE_NONE 0x00 |
| #define PAGE_MODE_1_LEVEL 0x01 |
| #define PAGE_MODE_2_LEVEL 0x02 |
| #define PAGE_MODE_3_LEVEL 0x03 |
| #define PAGE_MODE_4_LEVEL 0x04 |
| #define PAGE_MODE_5_LEVEL 0x05 |
| #define PAGE_MODE_6_LEVEL 0x06 |
| #define PAGE_MODE_7_LEVEL 0x07 |
| |
| #define GUEST_PGTABLE_4_LEVEL 0x00 |
| #define GUEST_PGTABLE_5_LEVEL 0x01 |
| |
| #define PM_LEVEL_SHIFT(x) (12 + ((x) * 9)) |
| #define PM_LEVEL_SIZE(x) (((x) < 6) ? \ |
| ((1ULL << PM_LEVEL_SHIFT((x))) - 1): \ |
| (0xffffffffffffffffULL)) |
| #define PM_LEVEL_INDEX(x, a) (((a) >> PM_LEVEL_SHIFT((x))) & 0x1ffULL) |
| #define PM_LEVEL_ENC(x) (((x) << 9) & 0xe00ULL) |
| #define PM_LEVEL_PDE(x, a) ((a) | PM_LEVEL_ENC((x)) | \ |
| IOMMU_PTE_PR | IOMMU_PTE_IR | IOMMU_PTE_IW) |
| #define PM_PTE_LEVEL(pte) (((pte) >> 9) & 0x7ULL) |
| |
| #define PM_MAP_4k 0 |
| #define PM_ADDR_MASK 0x000ffffffffff000ULL |
| #define PM_MAP_MASK(lvl) (PM_ADDR_MASK & \ |
| (~((1ULL << (12 + ((lvl) * 9))) - 1))) |
| #define PM_ALIGNED(lvl, addr) ((PM_MAP_MASK(lvl) & (addr)) == (addr)) |
| |
| /* |
| * Returns the page table level to use for a given page size |
| * Pagesize is expected to be a power-of-two |
| */ |
| #define PAGE_SIZE_LEVEL(pagesize) \ |
| ((__ffs(pagesize) - 12) / 9) |
| /* |
| * Returns the number of ptes to use for a given page size |
| * Pagesize is expected to be a power-of-two |
| */ |
| #define PAGE_SIZE_PTE_COUNT(pagesize) \ |
| (1ULL << ((__ffs(pagesize) - 12) % 9)) |
| |
| /* |
| * Aligns a given io-virtual address to a given page size |
| * Pagesize is expected to be a power-of-two |
| */ |
| #define PAGE_SIZE_ALIGN(address, pagesize) \ |
| ((address) & ~((pagesize) - 1)) |
| /* |
| * Creates an IOMMU PTE for an address and a given pagesize |
| * The PTE has no permission bits set |
| * Pagesize is expected to be a power-of-two larger than 4096 |
| */ |
| #define PAGE_SIZE_PTE(address, pagesize) \ |
| (((address) | ((pagesize) - 1)) & \ |
| (~(pagesize >> 1)) & PM_ADDR_MASK) |
| |
| /* |
| * Takes a PTE value with mode=0x07 and returns the page size it maps |
| */ |
| #define PTE_PAGE_SIZE(pte) \ |
| (1ULL << (1 + ffz(((pte) | 0xfffULL)))) |
| |
| /* |
| * Takes a page-table level and returns the default page-size for this level |
| */ |
| #define PTE_LEVEL_PAGE_SIZE(level) \ |
| (1ULL << (12 + (9 * (level)))) |
| |
| /* |
| * The IOPTE dirty bit |
| */ |
| #define IOMMU_PTE_HD_BIT (6) |
| |
| /* |
| * Bit value definition for I/O PTE fields |
| */ |
| #define IOMMU_PTE_PR BIT_ULL(0) |
| #define IOMMU_PTE_HD BIT_ULL(IOMMU_PTE_HD_BIT) |
| #define IOMMU_PTE_U BIT_ULL(59) |
| #define IOMMU_PTE_FC BIT_ULL(60) |
| #define IOMMU_PTE_IR BIT_ULL(61) |
| #define IOMMU_PTE_IW BIT_ULL(62) |
| |
| /* |
| * Bit value definition for DTE fields |
| */ |
| #define DTE_FLAG_V BIT_ULL(0) |
| #define DTE_FLAG_TV BIT_ULL(1) |
| #define DTE_FLAG_HAD (3ULL << 7) |
| #define DTE_FLAG_GIOV BIT_ULL(54) |
| #define DTE_FLAG_GV BIT_ULL(55) |
| #define DTE_GLX_SHIFT (56) |
| #define DTE_GLX_MASK (3) |
| #define DTE_FLAG_IR BIT_ULL(61) |
| #define DTE_FLAG_IW BIT_ULL(62) |
| |
| #define DTE_FLAG_IOTLB BIT_ULL(32) |
| #define DTE_FLAG_MASK (0x3ffULL << 32) |
| #define DEV_DOMID_MASK 0xffffULL |
| |
| #define DTE_GCR3_VAL_A(x) (((x) >> 12) & 0x00007ULL) |
| #define DTE_GCR3_VAL_B(x) (((x) >> 15) & 0x0ffffULL) |
| #define DTE_GCR3_VAL_C(x) (((x) >> 31) & 0x1fffffULL) |
| |
| #define DTE_GCR3_INDEX_A 0 |
| #define DTE_GCR3_INDEX_B 1 |
| #define DTE_GCR3_INDEX_C 1 |
| |
| #define DTE_GCR3_SHIFT_A 58 |
| #define DTE_GCR3_SHIFT_B 16 |
| #define DTE_GCR3_SHIFT_C 43 |
| |
| #define DTE_GPT_LEVEL_SHIFT 54 |
| |
| #define GCR3_VALID 0x01ULL |
| |
| #define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL) |
| #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_PR) |
| #define IOMMU_PTE_DIRTY(pte) ((pte) & IOMMU_PTE_HD) |
| #define IOMMU_PTE_PAGE(pte) (iommu_phys_to_virt((pte) & IOMMU_PAGE_MASK)) |
| #define IOMMU_PTE_MODE(pte) (((pte) >> 9) & 0x07) |
| |
| #define IOMMU_PROT_MASK 0x03 |
| #define IOMMU_PROT_IR 0x01 |
| #define IOMMU_PROT_IW 0x02 |
| |
| #define IOMMU_UNITY_MAP_FLAG_EXCL_RANGE (1 << 2) |
| |
| /* IOMMU capabilities */ |
| #define IOMMU_CAP_IOTLB 24 |
| #define IOMMU_CAP_NPCACHE 26 |
| #define IOMMU_CAP_EFR 27 |
| |
| /* IOMMU IVINFO */ |
| #define IOMMU_IVINFO_OFFSET 36 |
| #define IOMMU_IVINFO_EFRSUP BIT(0) |
| #define IOMMU_IVINFO_DMA_REMAP BIT(1) |
| |
| /* IOMMU Feature Reporting Field (for IVHD type 10h */ |
| #define IOMMU_FEAT_GASUP_SHIFT 6 |
| |
| /* IOMMU Extended Feature Register (EFR) */ |
| #define IOMMU_EFR_XTSUP_SHIFT 2 |
| #define IOMMU_EFR_GASUP_SHIFT 7 |
| #define IOMMU_EFR_MSICAPMMIOSUP_SHIFT 46 |
| |
| #define MAX_DOMAIN_ID 65536 |
| |
| /* Timeout stuff */ |
| #define LOOP_TIMEOUT 100000 |
| #define MMIO_STATUS_TIMEOUT 2000000 |
| |
| extern bool amd_iommu_dump; |
| #define DUMP_printk(format, arg...) \ |
| do { \ |
| if (amd_iommu_dump) \ |
| pr_info("AMD-Vi: " format, ## arg); \ |
| } while(0); |
| |
| /* global flag if IOMMUs cache non-present entries */ |
| extern bool amd_iommu_np_cache; |
| /* Only true if all IOMMUs support device IOTLBs */ |
| extern bool amd_iommu_iotlb_sup; |
| |
| struct irq_remap_table { |
| raw_spinlock_t lock; |
| unsigned min_index; |
| u32 *table; |
| }; |
| |
| /* Interrupt remapping feature used? */ |
| extern bool amd_iommu_irq_remap; |
| |
| extern const struct iommu_ops amd_iommu_ops; |
| |
| /* IVRS indicates that pre-boot remapping was enabled */ |
| extern bool amdr_ivrs_remap_support; |
| |
| /* kmem_cache to get tables with 128 byte alignement */ |
| extern struct kmem_cache *amd_iommu_irq_cache; |
| |
| #define PCI_SBDF_TO_SEGID(sbdf) (((sbdf) >> 16) & 0xffff) |
| #define PCI_SBDF_TO_DEVID(sbdf) ((sbdf) & 0xffff) |
| #define PCI_SEG_DEVID_TO_SBDF(seg, devid) ((((u32)(seg) & 0xffff) << 16) | \ |
| ((devid) & 0xffff)) |
| |
| /* Make iterating over all pci segment easier */ |
| #define for_each_pci_segment(pci_seg) \ |
| list_for_each_entry((pci_seg), &amd_iommu_pci_seg_list, list) |
| #define for_each_pci_segment_safe(pci_seg, next) \ |
| list_for_each_entry_safe((pci_seg), (next), &amd_iommu_pci_seg_list, list) |
| /* |
| * Make iterating over all IOMMUs easier |
| */ |
| #define for_each_iommu(iommu) \ |
| list_for_each_entry((iommu), &amd_iommu_list, list) |
| #define for_each_iommu_safe(iommu, next) \ |
| list_for_each_entry_safe((iommu), (next), &amd_iommu_list, list) |
| |
| struct amd_iommu; |
| struct iommu_domain; |
| struct irq_domain; |
| struct amd_irte_ops; |
| |
| #define AMD_IOMMU_FLAG_TRANS_PRE_ENABLED (1 << 0) |
| |
| #define io_pgtable_to_data(x) \ |
| container_of((x), struct amd_io_pgtable, iop) |
| |
| #define io_pgtable_ops_to_data(x) \ |
| io_pgtable_to_data(io_pgtable_ops_to_pgtable(x)) |
| |
| #define io_pgtable_ops_to_domain(x) \ |
| container_of(io_pgtable_ops_to_data(x), \ |
| struct protection_domain, iop) |
| |
| #define io_pgtable_cfg_to_data(x) \ |
| container_of((x), struct amd_io_pgtable, pgtbl_cfg) |
| |
| struct gcr3_tbl_info { |
| u64 *gcr3_tbl; /* Guest CR3 table */ |
| int glx; /* Number of levels for GCR3 table */ |
| u32 pasid_cnt; /* Track attached PASIDs */ |
| u16 domid; /* Per device domain ID */ |
| }; |
| |
| struct amd_io_pgtable { |
| struct io_pgtable_cfg pgtbl_cfg; |
| struct io_pgtable iop; |
| int mode; |
| u64 *root; |
| u64 *pgd; /* v2 pgtable pgd pointer */ |
| }; |
| |
| enum protection_domain_mode { |
| PD_MODE_V1 = 1, |
| PD_MODE_V2, |
| }; |
| |
| /* |
| * This structure contains generic data for IOMMU protection domains |
| * independent of their use. |
| */ |
| struct protection_domain { |
| struct list_head dev_list; /* List of all devices in this domain */ |
| struct iommu_domain domain; /* generic domain handle used by |
| iommu core code */ |
| struct amd_io_pgtable iop; |
| spinlock_t lock; /* mostly used to lock the page table*/ |
| u16 id; /* the domain id written to the device table */ |
| int nid; /* Node ID */ |
| enum protection_domain_mode pd_mode; /* Track page table type */ |
| bool dirty_tracking; /* dirty tracking is enabled in the domain */ |
| unsigned dev_cnt; /* devices assigned to this domain */ |
| unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */ |
| }; |
| |
| /* |
| * This structure contains information about one PCI segment in the system. |
| */ |
| struct amd_iommu_pci_seg { |
| /* List with all PCI segments in the system */ |
| struct list_head list; |
| |
| /* List of all available dev_data structures */ |
| struct llist_head dev_data_list; |
| |
| /* PCI segment number */ |
| u16 id; |
| |
| /* Largest PCI device id we expect translation requests for */ |
| u16 last_bdf; |
| |
| /* Size of the device table */ |
| u32 dev_table_size; |
| |
| /* Size of the alias table */ |
| u32 alias_table_size; |
| |
| /* Size of the rlookup table */ |
| u32 rlookup_table_size; |
| |
| /* |
| * device table virtual address |
| * |
| * Pointer to the per PCI segment device table. |
| * It is indexed by the PCI device id or the HT unit id and contains |
| * information about the domain the device belongs to as well as the |
| * page table root pointer. |
| */ |
| struct dev_table_entry *dev_table; |
| |
| /* |
| * The rlookup iommu table is used to find the IOMMU which is |
| * responsible for a specific device. It is indexed by the PCI |
| * device id. |
| */ |
| struct amd_iommu **rlookup_table; |
| |
| /* |
| * This table is used to find the irq remapping table for a given |
| * device id quickly. |
| */ |
| struct irq_remap_table **irq_lookup_table; |
| |
| /* |
| * Pointer to a device table which the content of old device table |
| * will be copied to. It's only be used in kdump kernel. |
| */ |
| struct dev_table_entry *old_dev_tbl_cpy; |
| |
| /* |
| * The alias table is a driver specific data structure which contains the |
| * mappings of the PCI device ids to the actual requestor ids on the IOMMU. |
| * More than one device can share the same requestor id. |
| */ |
| u16 *alias_table; |
| |
| /* |
| * A list of required unity mappings we find in ACPI. It is not locked |
| * because as runtime it is only read. It is created at ACPI table |
| * parsing time. |
| */ |
| struct list_head unity_map; |
| }; |
| |
| /* |
| * Structure where we save information about one hardware AMD IOMMU in the |
| * system. |
| */ |
| struct amd_iommu { |
| struct list_head list; |
| |
| /* Index within the IOMMU array */ |
| int index; |
| |
| /* locks the accesses to the hardware */ |
| raw_spinlock_t lock; |
| |
| /* Pointer to PCI device of this IOMMU */ |
| struct pci_dev *dev; |
| |
| /* Cache pdev to root device for resume quirks */ |
| struct pci_dev *root_pdev; |
| |
| /* physical address of MMIO space */ |
| u64 mmio_phys; |
| |
| /* physical end address of MMIO space */ |
| u64 mmio_phys_end; |
| |
| /* virtual address of MMIO space */ |
| u8 __iomem *mmio_base; |
| |
| /* capabilities of that IOMMU read from ACPI */ |
| u32 cap; |
| |
| /* flags read from acpi table */ |
| u8 acpi_flags; |
| |
| /* Extended features */ |
| u64 features; |
| |
| /* Extended features 2 */ |
| u64 features2; |
| |
| /* PCI device id of the IOMMU device */ |
| u16 devid; |
| |
| /* |
| * Capability pointer. There could be more than one IOMMU per PCI |
| * device function if there are more than one AMD IOMMU capability |
| * pointers. |
| */ |
| u16 cap_ptr; |
| |
| /* pci domain of this IOMMU */ |
| struct amd_iommu_pci_seg *pci_seg; |
| |
| /* start of exclusion range of that IOMMU */ |
| u64 exclusion_start; |
| /* length of exclusion range of that IOMMU */ |
| u64 exclusion_length; |
| |
| /* command buffer virtual address */ |
| u8 *cmd_buf; |
| u32 cmd_buf_head; |
| u32 cmd_buf_tail; |
| |
| /* event buffer virtual address */ |
| u8 *evt_buf; |
| |
| /* Name for event log interrupt */ |
| unsigned char evt_irq_name[16]; |
| |
| /* Base of the PPR log, if present */ |
| u8 *ppr_log; |
| |
| /* Name for PPR log interrupt */ |
| unsigned char ppr_irq_name[16]; |
| |
| /* Base of the GA log, if present */ |
| u8 *ga_log; |
| |
| /* Name for GA log interrupt */ |
| unsigned char ga_irq_name[16]; |
| |
| /* Tail of the GA log, if present */ |
| u8 *ga_log_tail; |
| |
| /* true if interrupts for this IOMMU are already enabled */ |
| bool int_enabled; |
| |
| /* if one, we need to send a completion wait command */ |
| bool need_sync; |
| |
| /* true if disable irte caching */ |
| bool irtcachedis_enabled; |
| |
| /* Handle for IOMMU core code */ |
| struct iommu_device iommu; |
| |
| /* |
| * We can't rely on the BIOS to restore all values on reinit, so we |
| * need to stash them |
| */ |
| |
| /* The iommu BAR */ |
| u32 stored_addr_lo; |
| u32 stored_addr_hi; |
| |
| /* |
| * Each iommu has 6 l1s, each of which is documented as having 0x12 |
| * registers |
| */ |
| u32 stored_l1[6][0x12]; |
| |
| /* The l2 indirect registers */ |
| u32 stored_l2[0x83]; |
| |
| /* The maximum PC banks and counters/bank (PCSup=1) */ |
| u8 max_banks; |
| u8 max_counters; |
| #ifdef CONFIG_IRQ_REMAP |
| struct irq_domain *ir_domain; |
| |
| struct amd_irte_ops *irte_ops; |
| #endif |
| |
| u32 flags; |
| volatile u64 *cmd_sem; |
| atomic64_t cmd_sem_val; |
| |
| #ifdef CONFIG_AMD_IOMMU_DEBUGFS |
| /* DebugFS Info */ |
| struct dentry *debugfs; |
| #endif |
| }; |
| |
| static inline struct amd_iommu *dev_to_amd_iommu(struct device *dev) |
| { |
| struct iommu_device *iommu = dev_to_iommu_device(dev); |
| |
| return container_of(iommu, struct amd_iommu, iommu); |
| } |
| |
| #define ACPIHID_UID_LEN 256 |
| #define ACPIHID_HID_LEN 9 |
| |
| struct acpihid_map_entry { |
| struct list_head list; |
| u8 uid[ACPIHID_UID_LEN]; |
| u8 hid[ACPIHID_HID_LEN]; |
| u32 devid; |
| u32 root_devid; |
| bool cmd_line; |
| struct iommu_group *group; |
| }; |
| |
| struct devid_map { |
| struct list_head list; |
| u8 id; |
| u32 devid; |
| bool cmd_line; |
| }; |
| |
| #define AMD_IOMMU_DEVICE_FLAG_ATS_SUP 0x1 /* ATS feature supported */ |
| #define AMD_IOMMU_DEVICE_FLAG_PRI_SUP 0x2 /* PRI feature supported */ |
| #define AMD_IOMMU_DEVICE_FLAG_PASID_SUP 0x4 /* PASID context supported */ |
| /* Device may request execution on memory pages */ |
| #define AMD_IOMMU_DEVICE_FLAG_EXEC_SUP 0x8 |
| /* Device may request super-user privileges */ |
| #define AMD_IOMMU_DEVICE_FLAG_PRIV_SUP 0x10 |
| |
| /* |
| * This struct contains device specific data for the IOMMU |
| */ |
| struct iommu_dev_data { |
| /*Protect against attach/detach races */ |
| spinlock_t lock; |
| |
| struct list_head list; /* For domain->dev_list */ |
| struct llist_node dev_data_list; /* For global dev_data_list */ |
| struct protection_domain *domain; /* Domain the device is bound to */ |
| struct gcr3_tbl_info gcr3_info; /* Per-device GCR3 table */ |
| struct device *dev; |
| u16 devid; /* PCI Device ID */ |
| |
| u32 flags; /* Holds AMD_IOMMU_DEVICE_FLAG_<*> */ |
| int ats_qdep; |
| u8 ats_enabled :1; /* ATS state */ |
| u8 pri_enabled :1; /* PRI state */ |
| u8 pasid_enabled:1; /* PASID state */ |
| u8 pri_tlp :1; /* PASID TLB required for |
| PPR completions */ |
| u8 ppr :1; /* Enable device PPR support */ |
| bool use_vapic; /* Enable device to use vapic mode */ |
| bool defer_attach; |
| |
| struct ratelimit_state rs; /* Ratelimit IOPF messages */ |
| }; |
| |
| /* Map HPET and IOAPIC ids to the devid used by the IOMMU */ |
| extern struct list_head ioapic_map; |
| extern struct list_head hpet_map; |
| extern struct list_head acpihid_map; |
| |
| /* |
| * List with all PCI segments in the system. This list is not locked because |
| * it is only written at driver initialization time |
| */ |
| extern struct list_head amd_iommu_pci_seg_list; |
| |
| /* |
| * List with all IOMMUs in the system. This list is not locked because it is |
| * only written and read at driver initialization or suspend time |
| */ |
| extern struct list_head amd_iommu_list; |
| |
| /* |
| * Array with pointers to each IOMMU struct |
| * The indices are referenced in the protection domains |
| */ |
| extern struct amd_iommu *amd_iommus[MAX_IOMMUS]; |
| |
| /* |
| * Structure defining one entry in the device table |
| */ |
| struct dev_table_entry { |
| u64 data[4]; |
| }; |
| |
| /* |
| * One entry for unity mappings parsed out of the ACPI table. |
| */ |
| struct unity_map_entry { |
| struct list_head list; |
| |
| /* starting device id this entry is used for (including) */ |
| u16 devid_start; |
| /* end device id this entry is used for (including) */ |
| u16 devid_end; |
| |
| /* start address to unity map (including) */ |
| u64 address_start; |
| /* end address to unity map (including) */ |
| u64 address_end; |
| |
| /* required protection */ |
| int prot; |
| }; |
| |
| /* |
| * Data structures for device handling |
| */ |
| |
| /* size of the dma_ops aperture as power of 2 */ |
| extern unsigned amd_iommu_aperture_order; |
| |
| /* allocation bitmap for domain ids */ |
| extern unsigned long *amd_iommu_pd_alloc_bitmap; |
| |
| extern bool amd_iommu_force_isolation; |
| |
| /* Max levels of glxval supported */ |
| extern int amd_iommu_max_glx_val; |
| |
| /* Global EFR and EFR2 registers */ |
| extern u64 amd_iommu_efr; |
| extern u64 amd_iommu_efr2; |
| |
| static inline int get_ioapic_devid(int id) |
| { |
| struct devid_map *entry; |
| |
| list_for_each_entry(entry, &ioapic_map, list) { |
| if (entry->id == id) |
| return entry->devid; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static inline int get_hpet_devid(int id) |
| { |
| struct devid_map *entry; |
| |
| list_for_each_entry(entry, &hpet_map, list) { |
| if (entry->id == id) |
| return entry->devid; |
| } |
| |
| return -EINVAL; |
| } |
| |
| enum amd_iommu_intr_mode_type { |
| AMD_IOMMU_GUEST_IR_LEGACY, |
| |
| /* This mode is not visible to users. It is used when |
| * we cannot fully enable vAPIC and fallback to only support |
| * legacy interrupt remapping via 128-bit IRTE. |
| */ |
| AMD_IOMMU_GUEST_IR_LEGACY_GA, |
| AMD_IOMMU_GUEST_IR_VAPIC, |
| }; |
| |
| #define AMD_IOMMU_GUEST_IR_GA(x) (x == AMD_IOMMU_GUEST_IR_VAPIC || \ |
| x == AMD_IOMMU_GUEST_IR_LEGACY_GA) |
| |
| #define AMD_IOMMU_GUEST_IR_VAPIC(x) (x == AMD_IOMMU_GUEST_IR_VAPIC) |
| |
| union irte { |
| u32 val; |
| struct { |
| u32 valid : 1, |
| no_fault : 1, |
| int_type : 3, |
| rq_eoi : 1, |
| dm : 1, |
| rsvd_1 : 1, |
| destination : 8, |
| vector : 8, |
| rsvd_2 : 8; |
| } fields; |
| }; |
| |
| #define APICID_TO_IRTE_DEST_LO(x) (x & 0xffffff) |
| #define APICID_TO_IRTE_DEST_HI(x) ((x >> 24) & 0xff) |
| |
| union irte_ga_lo { |
| u64 val; |
| |
| /* For int remapping */ |
| struct { |
| u64 valid : 1, |
| no_fault : 1, |
| /* ------ */ |
| int_type : 3, |
| rq_eoi : 1, |
| dm : 1, |
| /* ------ */ |
| guest_mode : 1, |
| destination : 24, |
| ga_tag : 32; |
| } fields_remap; |
| |
| /* For guest vAPIC */ |
| struct { |
| u64 valid : 1, |
| no_fault : 1, |
| /* ------ */ |
| ga_log_intr : 1, |
| rsvd1 : 3, |
| is_run : 1, |
| /* ------ */ |
| guest_mode : 1, |
| destination : 24, |
| ga_tag : 32; |
| } fields_vapic; |
| }; |
| |
| union irte_ga_hi { |
| u64 val; |
| struct { |
| u64 vector : 8, |
| rsvd_1 : 4, |
| ga_root_ptr : 40, |
| rsvd_2 : 4, |
| destination : 8; |
| } fields; |
| }; |
| |
| struct irte_ga { |
| union { |
| struct { |
| union irte_ga_lo lo; |
| union irte_ga_hi hi; |
| }; |
| u128 irte; |
| }; |
| }; |
| |
| struct irq_2_irte { |
| u16 devid; /* Device ID for IRTE table */ |
| u16 index; /* Index into IRTE table*/ |
| }; |
| |
| struct amd_ir_data { |
| u32 cached_ga_tag; |
| struct amd_iommu *iommu; |
| struct irq_2_irte irq_2_irte; |
| struct msi_msg msi_entry; |
| void *entry; /* Pointer to union irte or struct irte_ga */ |
| |
| /** |
| * Store information for activate/de-activate |
| * Guest virtual APIC mode during runtime. |
| */ |
| struct irq_cfg *cfg; |
| int ga_vector; |
| u64 ga_root_ptr; |
| u32 ga_tag; |
| }; |
| |
| struct amd_irte_ops { |
| void (*prepare)(void *, u32, bool, u8, u32, int); |
| void (*activate)(struct amd_iommu *iommu, void *, u16, u16); |
| void (*deactivate)(struct amd_iommu *iommu, void *, u16, u16); |
| void (*set_affinity)(struct amd_iommu *iommu, void *, u16, u16, u8, u32); |
| void *(*get)(struct irq_remap_table *, int); |
| void (*set_allocated)(struct irq_remap_table *, int); |
| bool (*is_allocated)(struct irq_remap_table *, int); |
| void (*clear_allocated)(struct irq_remap_table *, int); |
| }; |
| |
| #ifdef CONFIG_IRQ_REMAP |
| extern struct amd_irte_ops irte_32_ops; |
| extern struct amd_irte_ops irte_128_ops; |
| #endif |
| |
| #endif /* _ASM_X86_AMD_IOMMU_TYPES_H */ |