| /* |
| * Copyright (C) 2007-2010 Advanced Micro Devices, Inc. |
| * Author: Joerg Roedel <jroedel@suse.de> |
| * Leo Duran <leo.duran@amd.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published |
| * by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #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> |
| |
| /* |
| * 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_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 (1ULL<<0) |
| #define FEATURE_PPR (1ULL<<1) |
| #define FEATURE_X2APIC (1ULL<<2) |
| #define FEATURE_NX (1ULL<<3) |
| #define FEATURE_GT (1ULL<<4) |
| #define FEATURE_IA (1ULL<<6) |
| #define FEATURE_GA (1ULL<<7) |
| #define FEATURE_HE (1ULL<<8) |
| #define FEATURE_PC (1ULL<<9) |
| #define FEATURE_GAM_VAPIC (1ULL<<21) |
| |
| #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) |
| |
| /* 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_INT_MASK (1 << 1) |
| #define MMIO_STATUS_COM_WAIT_INT_MASK (1 << 2) |
| #define MMIO_STATUS_PPR_INT_MASK (1 << 6) |
| #define MMIO_STATUS_GALOG_RUN_MASK (1 << 8) |
| #define MMIO_STATUS_GALOG_OVERFLOW_MASK (1 << 9) |
| #define MMIO_STATUS_GALOG_INT_MASK (1 << 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_DEVID_MASK 0xffff |
| #define EVENT_DEVID_SHIFT 0 |
| #define EVENT_DOMID_MASK 0xffff |
| #define EVENT_DOMID_SHIFT 0 |
| #define EVENT_FLAGS_MASK 0xfff |
| #define EVENT_FLAGS_SHIFT 0x10 |
| |
| /* feature control bits */ |
| #define CONTROL_IOMMU_EN 0x00ULL |
| #define CONTROL_HT_TUN_EN 0x01ULL |
| #define CONTROL_EVT_LOG_EN 0x02ULL |
| #define CONTROL_EVT_INT_EN 0x03ULL |
| #define CONTROL_COMWAIT_EN 0x04ULL |
| #define CONTROL_INV_TIMEOUT 0x05ULL |
| #define CONTROL_PASSPW_EN 0x08ULL |
| #define CONTROL_RESPASSPW_EN 0x09ULL |
| #define CONTROL_COHERENT_EN 0x0aULL |
| #define CONTROL_ISOC_EN 0x0bULL |
| #define CONTROL_CMDBUF_EN 0x0cULL |
| #define CONTROL_PPFLOG_EN 0x0dULL |
| #define CONTROL_PPFINT_EN 0x0eULL |
| #define CONTROL_PPR_EN 0x0fULL |
| #define CONTROL_GT_EN 0x10ULL |
| #define CONTROL_GA_EN 0x11ULL |
| #define CONTROL_GAM_EN 0x19ULL |
| #define CONTROL_GALOG_EN 0x1CULL |
| #define CONTROL_GAINT_EN 0x1DULL |
| |
| #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_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 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 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_P | 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)))) |
| |
| #define IOMMU_PTE_P (1ULL << 0) |
| #define IOMMU_PTE_TV (1ULL << 1) |
| #define IOMMU_PTE_U (1ULL << 59) |
| #define IOMMU_PTE_FC (1ULL << 60) |
| #define IOMMU_PTE_IR (1ULL << 61) |
| #define IOMMU_PTE_IW (1ULL << 62) |
| |
| #define DTE_FLAG_IOTLB (1ULL << 32) |
| #define DTE_FLAG_GV (1ULL << 55) |
| #define DTE_FLAG_MASK (0x3ffULL << 32) |
| #define DTE_GLX_SHIFT (56) |
| #define DTE_GLX_MASK (3) |
| |
| #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) & 0xfffffULL) |
| |
| #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 GCR3_VALID 0x01ULL |
| |
| #define IOMMU_PAGE_MASK (((1ULL << 52) - 1) & ~0xfffULL) |
| #define IOMMU_PTE_PRESENT(pte) ((pte) & IOMMU_PTE_P) |
| #define IOMMU_PTE_PAGE(pte) (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 |
| |
| /* IOMMU capabilities */ |
| #define IOMMU_CAP_IOTLB 24 |
| #define IOMMU_CAP_NPCACHE 26 |
| #define IOMMU_CAP_EFR 27 |
| |
| /* IOMMU Feature Reporting Field (for IVHD type 10h */ |
| #define IOMMU_FEAT_GASUP_SHIFT 6 |
| |
| /* IOMMU Extended Feature Register (EFR) */ |
| #define IOMMU_EFR_GASUP_SHIFT 7 |
| |
| #define MAX_DOMAIN_ID 65536 |
| |
| /* Protection domain flags */ |
| #define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ |
| #define PD_DEFAULT_MASK (1UL << 1) /* domain is a default dma_ops |
| domain for an IOMMU */ |
| #define PD_PASSTHROUGH_MASK (1UL << 2) /* domain has no page |
| translation */ |
| #define PD_IOMMUV2_MASK (1UL << 3) /* domain has gcr3 table */ |
| |
| extern bool amd_iommu_dump; |
| #define DUMP_printk(format, arg...) \ |
| do { \ |
| if (amd_iommu_dump) \ |
| printk(KERN_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; |
| |
| #define MAX_IRQS_PER_TABLE 256 |
| #define IRQ_TABLE_ALIGNMENT 128 |
| |
| struct irq_remap_table { |
| spinlock_t lock; |
| unsigned min_index; |
| u32 *table; |
| }; |
| |
| extern struct irq_remap_table **irq_lookup_table; |
| |
| /* Interrupt remapping feature used? */ |
| extern bool amd_iommu_irq_remap; |
| |
| /* kmem_cache to get tables with 128 byte alignement */ |
| extern struct kmem_cache *amd_iommu_irq_cache; |
| |
| /* |
| * 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) |
| |
| #define APERTURE_RANGE_SHIFT 27 /* 128 MB */ |
| #define APERTURE_RANGE_SIZE (1ULL << APERTURE_RANGE_SHIFT) |
| #define APERTURE_RANGE_PAGES (APERTURE_RANGE_SIZE >> PAGE_SHIFT) |
| #define APERTURE_MAX_RANGES 32 /* allows 4GB of DMA address space */ |
| #define APERTURE_RANGE_INDEX(a) ((a) >> APERTURE_RANGE_SHIFT) |
| #define APERTURE_PAGE_INDEX(a) (((a) >> 21) & 0x3fULL) |
| |
| |
| /* |
| * This struct is used to pass information about |
| * incoming PPR faults around. |
| */ |
| struct amd_iommu_fault { |
| u64 address; /* IO virtual address of the fault*/ |
| u32 pasid; /* Address space identifier */ |
| u16 device_id; /* Originating PCI device id */ |
| u16 tag; /* PPR tag */ |
| u16 flags; /* Fault flags */ |
| |
| }; |
| |
| |
| struct iommu_domain; |
| struct irq_domain; |
| struct amd_irte_ops; |
| |
| /* |
| * This structure contains generic data for IOMMU protection domains |
| * independent of their use. |
| */ |
| struct protection_domain { |
| struct list_head list; /* for list of all protection domains */ |
| struct list_head dev_list; /* List of all devices in this domain */ |
| struct iommu_domain domain; /* generic domain handle used by |
| iommu core code */ |
| spinlock_t lock; /* mostly used to lock the page table*/ |
| struct mutex api_lock; /* protect page tables in the iommu-api path */ |
| u16 id; /* the domain id written to the device table */ |
| int mode; /* paging mode (0-6 levels) */ |
| u64 *pt_root; /* page table root pointer */ |
| int glx; /* Number of levels for GCR3 table */ |
| u64 *gcr3_tbl; /* Guest CR3 table */ |
| unsigned long flags; /* flags to find out type of domain */ |
| bool updated; /* complete domain flush required */ |
| unsigned dev_cnt; /* devices assigned to this domain */ |
| unsigned dev_iommu[MAX_IOMMUS]; /* per-IOMMU reference count */ |
| }; |
| |
| /* |
| * 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 */ |
| 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; |
| |
| /* IOMMUv2 */ |
| bool is_iommu_v2; |
| |
| /* 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 */ |
| u16 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; |
| |
| /* event buffer virtual address */ |
| u8 *evt_buf; |
| |
| /* Base of the PPR log, if present */ |
| u8 *ppr_log; |
| |
| /* Base of the GA log, if present */ |
| u8 *ga_log; |
| |
| /* 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; |
| |
| /* IOMMU sysfs device */ |
| struct device *iommu_dev; |
| |
| /* |
| * 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 irq_domain *msi_domain; |
| |
| struct amd_irte_ops *irte_ops; |
| #endif |
| |
| volatile u64 __aligned(8) cmd_sem; |
| }; |
| |
| #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]; |
| u16 devid; |
| u16 root_devid; |
| bool cmd_line; |
| struct iommu_group *group; |
| }; |
| |
| struct devid_map { |
| struct list_head list; |
| u8 id; |
| u16 devid; |
| bool cmd_line; |
| }; |
| |
| /* 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 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]; |
| |
| /* Number of IOMMUs present in the system */ |
| extern int amd_iommus_present; |
| |
| /* |
| * Declarations for the global list of all protection domains |
| */ |
| extern spinlock_t amd_iommu_pd_lock; |
| extern struct list_head amd_iommu_pd_list; |
| |
| /* |
| * 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; |
| }; |
| |
| /* |
| * List of all unity mappings. It is not locked because as runtime it is only |
| * read. It is created at ACPI table parsing time. |
| */ |
| extern struct list_head amd_iommu_unity_map; |
| |
| /* |
| * Data structures for device handling |
| */ |
| |
| /* |
| * Device table used by hardware. Read and write accesses by software are |
| * locked with the amd_iommu_pd_table lock. |
| */ |
| extern struct dev_table_entry *amd_iommu_dev_table; |
| |
| /* |
| * Alias table to find requestor ids to device ids. Not locked because only |
| * read on runtime. |
| */ |
| extern u16 *amd_iommu_alias_table; |
| |
| /* |
| * Reverse lookup table to find the IOMMU which translates a specific device. |
| */ |
| extern struct amd_iommu **amd_iommu_rlookup_table; |
| |
| /* size of the dma_ops aperture as power of 2 */ |
| extern unsigned amd_iommu_aperture_order; |
| |
| /* largest PCI device id we expect translation requests for */ |
| extern u16 amd_iommu_last_bdf; |
| |
| /* allocation bitmap for domain ids */ |
| extern unsigned long *amd_iommu_pd_alloc_bitmap; |
| |
| /* |
| * If true, the addresses will be flushed on unmap time, not when |
| * they are reused |
| */ |
| extern bool amd_iommu_unmap_flush; |
| |
| /* Smallest max PASID supported by any IOMMU in the system */ |
| extern u32 amd_iommu_max_pasid; |
| |
| extern bool amd_iommu_v2_present; |
| |
| extern bool amd_iommu_force_isolation; |
| |
| /* Max levels of glxval supported */ |
| extern int amd_iommu_max_glx_val; |
| |
| /* |
| * This function flushes all internal caches of |
| * the IOMMU used by this driver. |
| */ |
| extern void iommu_flush_all_caches(struct amd_iommu *iommu); |
| |
| 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; |
| }; |
| |
| 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 : 8, |
| rsvd : 48; |
| } 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 : 8, |
| rsvd2 : 16, |
| ga_tag : 32; |
| } fields_vapic; |
| }; |
| |
| union irte_ga_hi { |
| u64 val; |
| struct { |
| u64 vector : 8, |
| rsvd_1 : 4, |
| ga_root_ptr : 40, |
| rsvd_2 : 12; |
| } fields; |
| }; |
| |
| struct irte_ga { |
| union irte_ga_lo lo; |
| union irte_ga_hi hi; |
| }; |
| |
| 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 irq_2_irte irq_2_irte; |
| struct msi_msg msi_entry; |
| void *entry; /* Pointer to union irte or struct irte_ga */ |
| void *ref; /* Pointer to the actual irte */ |
| }; |
| |
| struct amd_irte_ops { |
| void (*prepare)(void *, u32, u32, u8, u32, int); |
| void (*activate)(void *, u16, u16); |
| void (*deactivate)(void *, u16, u16); |
| void (*set_affinity)(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 */ |