/* * QEMU emulation of an AMD IOMMU (AMD-Vi) * * Copyright (C) 2011 Eduard - Gabriel Munteanu * Copyright (C) 2015, 2016 David Kiarie Kahurani * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * 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, see <http://www.gnu.org/licenses/>. */ #ifndef AMD_IOMMU_H #define AMD_IOMMU_H #include "hw/pci/pci.h" #include "hw/i386/x86-iommu.h" /* Capability registers */ #define AMDVI_CAPAB_BAR_LOW 0x04 #define AMDVI_CAPAB_BAR_HIGH 0x08 #define AMDVI_CAPAB_RANGE 0x0C #define AMDVI_CAPAB_MISC 0x10 #define AMDVI_CAPAB_SIZE 0x18 #define AMDVI_CAPAB_REG_SIZE 0x04 /* Capability header data */ #define AMDVI_CAPAB_ID_SEC 0xf #define AMDVI_CAPAB_FLAT_EXT (1 << 28) #define AMDVI_CAPAB_EFR_SUP (1 << 27) #define AMDVI_CAPAB_FLAG_NPCACHE (1 << 26) #define AMDVI_CAPAB_FLAG_HTTUNNEL (1 << 25) #define AMDVI_CAPAB_FLAG_IOTLBSUP (1 << 24) #define AMDVI_CAPAB_INIT_TYPE (3 << 16) /* No. of used MMIO registers */ #define AMDVI_MMIO_REGS_HIGH 7 #define AMDVI_MMIO_REGS_LOW 8 /* MMIO registers */ #define AMDVI_MMIO_DEVICE_TABLE 0x0000 #define AMDVI_MMIO_COMMAND_BASE 0x0008 #define AMDVI_MMIO_EVENT_BASE 0x0010 #define AMDVI_MMIO_CONTROL 0x0018 #define AMDVI_MMIO_EXCL_BASE 0x0020 #define AMDVI_MMIO_EXCL_LIMIT 0x0028 #define AMDVI_MMIO_EXT_FEATURES 0x0030 #define AMDVI_MMIO_COMMAND_HEAD 0x2000 #define AMDVI_MMIO_COMMAND_TAIL 0x2008 #define AMDVI_MMIO_EVENT_HEAD 0x2010 #define AMDVI_MMIO_EVENT_TAIL 0x2018 #define AMDVI_MMIO_STATUS 0x2020 #define AMDVI_MMIO_PPR_BASE 0x0038 #define AMDVI_MMIO_PPR_HEAD 0x2030 #define AMDVI_MMIO_PPR_TAIL 0x2038 #define AMDVI_MMIO_SIZE 0x4000 #define AMDVI_MMIO_DEVTAB_SIZE_MASK ((1ULL << 12) - 1) #define AMDVI_MMIO_DEVTAB_BASE_MASK (((1ULL << 52) - 1) & ~ \ AMDVI_MMIO_DEVTAB_SIZE_MASK) #define AMDVI_MMIO_DEVTAB_ENTRY_SIZE 32 #define AMDVI_MMIO_DEVTAB_SIZE_UNIT 4096 /* some of this are similar but just for readability */ #define AMDVI_MMIO_CMDBUF_SIZE_BYTE (AMDVI_MMIO_COMMAND_BASE + 7) #define AMDVI_MMIO_CMDBUF_SIZE_MASK 0x0f #define AMDVI_MMIO_CMDBUF_BASE_MASK AMDVI_MMIO_DEVTAB_BASE_MASK #define AMDVI_MMIO_CMDBUF_HEAD_MASK (((1ULL << 19) - 1) & ~0x0f) #define AMDVI_MMIO_CMDBUF_TAIL_MASK AMDVI_MMIO_EVTLOG_HEAD_MASK #define AMDVI_MMIO_EVTLOG_SIZE_BYTE (AMDVI_MMIO_EVENT_BASE + 7) #define AMDVI_MMIO_EVTLOG_SIZE_MASK AMDVI_MMIO_CMDBUF_SIZE_MASK #define AMDVI_MMIO_EVTLOG_BASE_MASK AMDVI_MMIO_CMDBUF_BASE_MASK #define AMDVI_MMIO_EVTLOG_HEAD_MASK (((1ULL << 19) - 1) & ~0x0f) #define AMDVI_MMIO_EVTLOG_TAIL_MASK AMDVI_MMIO_EVTLOG_HEAD_MASK #define AMDVI_MMIO_PPRLOG_SIZE_BYTE (AMDVI_MMIO_EVENT_BASE + 7) #define AMDVI_MMIO_PPRLOG_HEAD_MASK AMDVI_MMIO_EVTLOG_HEAD_MASK #define AMDVI_MMIO_PPRLOG_TAIL_MASK AMDVI_MMIO_EVTLOG_HEAD_MASK #define AMDVI_MMIO_PPRLOG_BASE_MASK AMDVI_MMIO_EVTLOG_BASE_MASK #define AMDVI_MMIO_PPRLOG_SIZE_MASK AMDVI_MMIO_EVTLOG_SIZE_MASK #define AMDVI_MMIO_EXCL_ENABLED_MASK (1ULL << 0) #define AMDVI_MMIO_EXCL_ALLOW_MASK (1ULL << 1) #define AMDVI_MMIO_EXCL_LIMIT_MASK AMDVI_MMIO_DEVTAB_BASE_MASK #define AMDVI_MMIO_EXCL_LIMIT_LOW 0xfff /* mmio control register flags */ #define AMDVI_MMIO_CONTROL_AMDVIEN (1ULL << 0) #define AMDVI_MMIO_CONTROL_HTTUNEN (1ULL << 1) #define AMDVI_MMIO_CONTROL_EVENTLOGEN (1ULL << 2) #define AMDVI_MMIO_CONTROL_EVENTINTEN (1ULL << 3) #define AMDVI_MMIO_CONTROL_COMWAITINTEN (1ULL << 4) #define AMDVI_MMIO_CONTROL_CMDBUFLEN (1ULL << 12) #define AMDVI_MMIO_CONTROL_GAEN (1ULL << 17) /* MMIO status register bits */ #define AMDVI_MMIO_STATUS_CMDBUF_RUN (1 << 4) #define AMDVI_MMIO_STATUS_EVT_RUN (1 << 3) #define AMDVI_MMIO_STATUS_COMP_INT (1 << 2) #define AMDVI_MMIO_STATUS_EVT_OVF (1 << 0) #define AMDVI_CMDBUF_ID_BYTE 0x07 #define AMDVI_CMDBUF_ID_RSHIFT 4 #define AMDVI_CMD_COMPLETION_WAIT 0x01 #define AMDVI_CMD_INVAL_DEVTAB_ENTRY 0x02 #define AMDVI_CMD_INVAL_AMDVI_PAGES 0x03 #define AMDVI_CMD_INVAL_IOTLB_PAGES 0x04 #define AMDVI_CMD_INVAL_INTR_TABLE 0x05 #define AMDVI_CMD_PREFETCH_AMDVI_PAGES 0x06 #define AMDVI_CMD_COMPLETE_PPR_REQUEST 0x07 #define AMDVI_CMD_INVAL_AMDVI_ALL 0x08 #define AMDVI_DEVTAB_ENTRY_SIZE 32 /* Device table entry bits 0:63 */ #define AMDVI_DEV_VALID (1ULL << 0) #define AMDVI_DEV_TRANSLATION_VALID (1ULL << 1) #define AMDVI_DEV_MODE_MASK 0x7 #define AMDVI_DEV_MODE_RSHIFT 9 #define AMDVI_DEV_PT_ROOT_MASK 0xffffffffff000 #define AMDVI_DEV_PT_ROOT_RSHIFT 12 #define AMDVI_DEV_PERM_SHIFT 61 #define AMDVI_DEV_PERM_READ (1ULL << 61) #define AMDVI_DEV_PERM_WRITE (1ULL << 62) /* Device table entry bits 64:127 */ #define AMDVI_DEV_DOMID_ID_MASK ((1ULL << 16) - 1) /* Event codes and flags, as stored in the info field */ #define AMDVI_EVENT_ILLEGAL_DEVTAB_ENTRY (0x1U << 12) #define AMDVI_EVENT_IOPF (0x2U << 12) #define AMDVI_EVENT_IOPF_I (1U << 3) #define AMDVI_EVENT_DEV_TAB_HW_ERROR (0x3U << 12) #define AMDVI_EVENT_PAGE_TAB_HW_ERROR (0x4U << 12) #define AMDVI_EVENT_ILLEGAL_COMMAND_ERROR (0x5U << 12) #define AMDVI_EVENT_COMMAND_HW_ERROR (0x6U << 12) #define AMDVI_EVENT_LEN 16 #define AMDVI_PERM_READ (1 << 0) #define AMDVI_PERM_WRITE (1 << 1) #define AMDVI_FEATURE_PREFETCH (1ULL << 0) /* page prefetch */ #define AMDVI_FEATURE_PPR (1ULL << 1) /* PPR Support */ #define AMDVI_FEATURE_GT (1ULL << 4) /* Guest Translation */ #define AMDVI_FEATURE_IA (1ULL << 6) /* inval all support */ #define AMDVI_FEATURE_GA (1ULL << 7) /* guest VAPIC support */ #define AMDVI_FEATURE_HE (1ULL << 8) /* hardware error regs */ #define AMDVI_FEATURE_PC (1ULL << 9) /* Perf counters */ /* reserved DTE bits */ #define AMDVI_DTE_LOWER_QUAD_RESERVED 0x80300000000000fc #define AMDVI_DTE_MIDDLE_QUAD_RESERVED 0x0000000000000100 #define AMDVI_DTE_UPPER_QUAD_RESERVED 0x08f0000000000000 /* AMDVI paging mode */ #define AMDVI_GATS_MODE (2ULL << 12) #define AMDVI_HATS_MODE (2ULL << 10) /* IOTLB */ #define AMDVI_IOTLB_MAX_SIZE 1024 #define AMDVI_DEVID_SHIFT 36 /* extended feature support */ #define AMDVI_EXT_FEATURES (AMDVI_FEATURE_PREFETCH | AMDVI_FEATURE_PPR | \ AMDVI_FEATURE_IA | AMDVI_FEATURE_GT | AMDVI_FEATURE_HE | \ AMDVI_GATS_MODE | AMDVI_HATS_MODE | AMDVI_FEATURE_GA) /* capabilities header */ #define AMDVI_CAPAB_FEATURES (AMDVI_CAPAB_FLAT_EXT | \ AMDVI_CAPAB_FLAG_NPCACHE | AMDVI_CAPAB_FLAG_IOTLBSUP \ | AMDVI_CAPAB_ID_SEC | AMDVI_CAPAB_INIT_TYPE | \ AMDVI_CAPAB_FLAG_HTTUNNEL | AMDVI_CAPAB_EFR_SUP) /* AMDVI default address */ #define AMDVI_BASE_ADDR 0xfed80000 /* page management constants */ #define AMDVI_PAGE_SHIFT 12 #define AMDVI_PAGE_SIZE (1ULL << AMDVI_PAGE_SHIFT) #define AMDVI_PAGE_SHIFT_4K 12 #define AMDVI_PAGE_MASK_4K (~((1ULL << AMDVI_PAGE_SHIFT_4K) - 1)) #define AMDVI_MAX_VA_ADDR (48UL << 5) #define AMDVI_MAX_PH_ADDR (40UL << 8) #define AMDVI_MAX_GVA_ADDR (48UL << 15) /* Completion Wait data size */ #define AMDVI_COMPLETION_DATA_SIZE 8 #define AMDVI_COMMAND_SIZE 16 /* Completion Wait data size */ #define AMDVI_COMPLETION_DATA_SIZE 8 #define AMDVI_COMMAND_SIZE 16 #define AMDVI_INT_ADDR_FIRST 0xfee00000 #define AMDVI_INT_ADDR_LAST 0xfeefffff #define AMDVI_INT_ADDR_SIZE (AMDVI_INT_ADDR_LAST - AMDVI_INT_ADDR_FIRST + 1) #define AMDVI_MSI_ADDR_HI_MASK (0xffffffff00000000ULL) #define AMDVI_MSI_ADDR_LO_MASK (0x00000000ffffffffULL) /* SB IOAPIC is always on this device in AMD systems */ #define AMDVI_IOAPIC_SB_DEVID PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) /* Interrupt remapping errors */ #define AMDVI_IR_ERR 0x1 #define AMDVI_IR_GET_IRTE 0x2 #define AMDVI_IR_TARGET_ABORT 0x3 /* Interrupt remapping */ #define AMDVI_IR_REMAP_ENABLE 1ULL #define AMDVI_IR_INTCTL_SHIFT 60 #define AMDVI_IR_INTCTL_ABORT 0 #define AMDVI_IR_INTCTL_PASS 1 #define AMDVI_IR_INTCTL_REMAP 2 #define AMDVI_IR_PHYS_ADDR_MASK (((1ULL << 45) - 1) << 6) /* MSI data 10:0 bits (section 2.2.5.1 Fig 14) */ #define AMDVI_IRTE_OFFSET 0x7ff /* Delivery mode of MSI data (same as IOAPIC deilver mode encoding) */ #define AMDVI_IOAPIC_INT_TYPE_FIXED 0x0 #define AMDVI_IOAPIC_INT_TYPE_ARBITRATED 0x1 #define AMDVI_IOAPIC_INT_TYPE_SMI 0x2 #define AMDVI_IOAPIC_INT_TYPE_NMI 0x4 #define AMDVI_IOAPIC_INT_TYPE_INIT 0x5 #define AMDVI_IOAPIC_INT_TYPE_EINT 0x7 /* Pass through interrupt */ #define AMDVI_DEV_INT_PASS_MASK (1ULL << 56) #define AMDVI_DEV_EINT_PASS_MASK (1ULL << 57) #define AMDVI_DEV_NMI_PASS_MASK (1ULL << 58) #define AMDVI_DEV_LINT0_PASS_MASK (1ULL << 62) #define AMDVI_DEV_LINT1_PASS_MASK (1ULL << 63) /* Interrupt remapping table fields (Guest VAPIC not enabled) */ union irte { uint32_t val; struct { uint32_t valid:1, no_fault:1, int_type:3, rq_eoi:1, dm:1, guest_mode:1, destination:8, vector:8, rsvd:8; } fields; }; /* Interrupt remapping table fields (Guest VAPIC is enabled) */ union irte_ga_lo { uint64_t val; /* For int remapping */ struct { uint64_t valid:1, no_fault:1, /* ------ */ int_type:3, rq_eoi:1, dm:1, /* ------ */ guest_mode:1, destination:8, rsvd_1:48; } fields_remap; }; union irte_ga_hi { uint64_t val; struct { uint64_t vector:8, rsvd_2:56; } fields; }; struct irte_ga { union irte_ga_lo lo; union irte_ga_hi hi; }; #define TYPE_AMD_IOMMU_DEVICE "amd-iommu" #define AMD_IOMMU_DEVICE(obj)\ OBJECT_CHECK(AMDVIState, (obj), TYPE_AMD_IOMMU_DEVICE) #define TYPE_AMD_IOMMU_PCI "AMDVI-PCI" #define TYPE_AMD_IOMMU_MEMORY_REGION "amd-iommu-iommu-memory-region" typedef struct AMDVIAddressSpace AMDVIAddressSpace; /* functions to steal PCI config space */ typedef struct AMDVIPCIState { PCIDevice dev; /* The PCI device itself */ } AMDVIPCIState; typedef struct AMDVIState { X86IOMMUState iommu; /* IOMMU bus device */ AMDVIPCIState pci; /* IOMMU PCI device */ uint32_t version; uint32_t capab_offset; /* capability offset pointer */ uint64_t mmio_addr; uint32_t devid; /* auto-assigned devid */ bool enabled; /* IOMMU enabled */ bool ats_enabled; /* address translation enabled */ bool cmdbuf_enabled; /* command buffer enabled */ bool evtlog_enabled; /* event log enabled */ bool excl_enabled; hwaddr devtab; /* base address device table */ size_t devtab_len; /* device table length */ hwaddr cmdbuf; /* command buffer base address */ uint64_t cmdbuf_len; /* command buffer length */ uint32_t cmdbuf_head; /* current IOMMU read position */ uint32_t cmdbuf_tail; /* next Software write position */ bool completion_wait_intr; hwaddr evtlog; /* base address event log */ bool evtlog_intr; uint32_t evtlog_len; /* event log length */ uint32_t evtlog_head; /* current IOMMU write position */ uint32_t evtlog_tail; /* current Software read position */ /* unused for now */ hwaddr excl_base; /* base DVA - IOMMU exclusion range */ hwaddr excl_limit; /* limit of IOMMU exclusion range */ bool excl_allow; /* translate accesses to the exclusion range */ bool excl_enable; /* exclusion range enabled */ hwaddr ppr_log; /* base address ppr log */ uint32_t pprlog_len; /* ppr log len */ uint32_t pprlog_head; /* ppr log head */ uint32_t pprlog_tail; /* ppr log tail */ MemoryRegion mmio; /* MMIO region */ uint8_t mmior[AMDVI_MMIO_SIZE]; /* read/write MMIO */ uint8_t w1cmask[AMDVI_MMIO_SIZE]; /* read/write 1 clear mask */ uint8_t romask[AMDVI_MMIO_SIZE]; /* MMIO read/only mask */ bool mmio_enabled; /* for each served device */ AMDVIAddressSpace **address_spaces[PCI_BUS_MAX]; /* IOTLB */ GHashTable *iotlb; /* Interrupt remapping */ bool ga_enabled; } AMDVIState; #endif