diff options
Diffstat (limited to 'hw/i386/amd_iommu.h')
| -rw-r--r-- | hw/i386/amd_iommu.h | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/hw/i386/amd_iommu.h b/hw/i386/amd_iommu.h new file mode 100644 index 0000000000..884926e9e7 --- /dev/null +++ b/hw/i386/amd_iommu.h @@ -0,0 +1,289 @@ +/* + * QEMU emulation of an AMD IOMMU (AMD-Vi) + * + * Copyright (C) 2011 Eduard - Gabriel Munteanu + * Copyright (C) 2015 David Kiarie, <davidkiarie4@gmail.com> + * + * 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/hw.h" +#include "hw/pci/pci.h" +#include "hw/pci/msi.h" +#include "hw/sysbus.h" +#include "sysemu/dma.h" +#include "hw/i386/pc.h" +#include "hw/pci/pci_bus.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 8 +#define AMDVI_MMIO_REGS_LOW 7 + +/* 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) + +/* 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 (6ULL << 12) +#define AMDVI_HATS_MODE (6ULL << 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) + +/* 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 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" + +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; + + /* IOMMU function */ + MemoryRegionIOMMUOps iommu_ops; + + /* for each served device */ + AMDVIAddressSpace **address_spaces[PCI_BUS_MAX]; + + /* IOTLB */ + GHashTable *iotlb; +} AMDVIState; + +#endif |