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qemu/hw/i386/intel_iommu_internal.h
Jason Wang ec1a78cee9 intel_iommu: refine iotlb hash calculation 
Commit 1b2b12376c ("intel-iommu: PASID support") takes PASID into
account when calculating iotlb hash like:

static guint vtd_iotlb_hash(gconstpointer v)
{
    const struct vtd_iotlb_key *key = v;

    return key->gfn | ((key->sid) << VTD_IOTLB_SID_SHIFT) |
           (key->level) << VTD_IOTLB_LVL_SHIFT |
           (key->pasid) << VTD_IOTLB_PASID_SHIFT;
}

This turns out to be problematic since:

- the shift will lose bits if not converting to uint64_t
- level should be off by one in order to fit into 2 bits
- VTD_IOTLB_PASID_SHIFT is 30 but PASID is 20 bits which will waste
  some bits
- the hash result is uint64_t so we will lose bits when converting to
  guint

So this patch fixes them by

- converting the keys into uint64_t before doing the shift
- off level by one to make it fit into two bits
- change the sid, lvl and pasid shift to 26, 42 and 44 in order to
  take the full width of uint64_t
- perform an XOR to the top 32bit with the bottom 32bit for the final
  result to fit guint

Fixes: Coverity CID 1508100
Fixes: 1b2b12376c ("intel-iommu: PASID support")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230412073510.7158-1-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
2023-04-24 22:56:55 -04:00

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/*
* QEMU emulation of an Intel IOMMU (VT-d)
* (DMA Remapping device)
*
* Copyright (C) 2013 Knut Omang, Oracle <knut.omang@oracle.com>
* Copyright (C) 2014 Le Tan, <tamlokveer@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/>.
*
* Lots of defines copied from kernel/include/linux/intel-iommu.h:
* Copyright (C) 2006-2008 Intel Corporation
* Author: Ashok Raj <ashok.raj@intel.com>
* Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
*
*/
#ifndef HW_I386_INTEL_IOMMU_INTERNAL_H
#define HW_I386_INTEL_IOMMU_INTERNAL_H
#include "hw/i386/intel_iommu.h"
/*
* Intel IOMMU register specification
*/
#define DMAR_VER_REG 0x0 /* Arch version supported by this IOMMU */
#define DMAR_CAP_REG 0x8 /* Hardware supported capabilities */
#define DMAR_CAP_REG_HI 0xc /* High 32-bit of DMAR_CAP_REG */
#define DMAR_ECAP_REG 0x10 /* Extended capabilities supported */
#define DMAR_ECAP_REG_HI 0X14
#define DMAR_GCMD_REG 0x18 /* Global command */
#define DMAR_GSTS_REG 0x1c /* Global status */
#define DMAR_RTADDR_REG 0x20 /* Root entry table */
#define DMAR_RTADDR_REG_HI 0X24
#define DMAR_CCMD_REG 0x28 /* Context command */
#define DMAR_CCMD_REG_HI 0x2c
#define DMAR_FSTS_REG 0x34 /* Fault status */
#define DMAR_FECTL_REG 0x38 /* Fault control */
#define DMAR_FEDATA_REG 0x3c /* Fault event interrupt data */
#define DMAR_FEADDR_REG 0x40 /* Fault event interrupt addr */
#define DMAR_FEUADDR_REG 0x44 /* Upper address */
#define DMAR_AFLOG_REG 0x58 /* Advanced fault control */
#define DMAR_AFLOG_REG_HI 0X5c
#define DMAR_PMEN_REG 0x64 /* Enable protected memory region */
#define DMAR_PLMBASE_REG 0x68 /* PMRR low addr */
#define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */
#define DMAR_PHMBASE_REG 0x70 /* PMRR high base addr */
#define DMAR_PHMBASE_REG_HI 0X74
#define DMAR_PHMLIMIT_REG 0x78 /* PMRR high limit */
#define DMAR_PHMLIMIT_REG_HI 0x7c
#define DMAR_IQH_REG 0x80 /* Invalidation queue head */
#define DMAR_IQH_REG_HI 0X84
#define DMAR_IQT_REG 0x88 /* Invalidation queue tail */
#define DMAR_IQT_REG_HI 0X8c
#define DMAR_IQA_REG 0x90 /* Invalidation queue addr */
#define DMAR_IQA_REG_HI 0x94
#define DMAR_ICS_REG 0x9c /* Invalidation complete status */
#define DMAR_IRTA_REG 0xb8 /* Interrupt remapping table addr */
#define DMAR_IRTA_REG_HI 0xbc
#define DMAR_IECTL_REG 0xa0 /* Invalidation event control */
#define DMAR_IEDATA_REG 0xa4 /* Invalidation event data */
#define DMAR_IEADDR_REG 0xa8 /* Invalidation event address */
#define DMAR_IEUADDR_REG 0xac /* Invalidation event address */
#define DMAR_PQH_REG 0xc0 /* Page request queue head */
#define DMAR_PQH_REG_HI 0xc4
#define DMAR_PQT_REG 0xc8 /* Page request queue tail*/
#define DMAR_PQT_REG_HI 0xcc
#define DMAR_PQA_REG 0xd0 /* Page request queue address */
#define DMAR_PQA_REG_HI 0xd4
#define DMAR_PRS_REG 0xdc /* Page request status */
#define DMAR_PECTL_REG 0xe0 /* Page request event control */
#define DMAR_PEDATA_REG 0xe4 /* Page request event data */
#define DMAR_PEADDR_REG 0xe8 /* Page request event address */
#define DMAR_PEUADDR_REG 0xec /* Page event upper address */
#define DMAR_MTRRCAP_REG 0x100 /* MTRR capability */
#define DMAR_MTRRCAP_REG_HI 0x104
#define DMAR_MTRRDEF_REG 0x108 /* MTRR default type */
#define DMAR_MTRRDEF_REG_HI 0x10c
/* IOTLB registers */
#define DMAR_IOTLB_REG_OFFSET 0xf0 /* Offset to the IOTLB registers */
#define DMAR_IVA_REG DMAR_IOTLB_REG_OFFSET /* Invalidate address */
#define DMAR_IVA_REG_HI (DMAR_IVA_REG + 4)
/* IOTLB invalidate register */
#define DMAR_IOTLB_REG (DMAR_IOTLB_REG_OFFSET + 0x8)
#define DMAR_IOTLB_REG_HI (DMAR_IOTLB_REG + 4)
/* FRCD */
#define DMAR_FRCD_REG_OFFSET 0x220 /* Offset to the fault recording regs */
/* NOTICE: If you change the DMAR_FRCD_REG_NR, please remember to change the
* DMAR_REG_SIZE in include/hw/i386/intel_iommu.h.
* #define DMAR_REG_SIZE (DMAR_FRCD_REG_OFFSET + 16 * DMAR_FRCD_REG_NR)
*/
#define DMAR_FRCD_REG_NR 1ULL /* Num of fault recording regs */
#define DMAR_FRCD_REG_0_0 0x220 /* The 0th fault recording regs */
#define DMAR_FRCD_REG_0_1 0x224
#define DMAR_FRCD_REG_0_2 0x228
#define DMAR_FRCD_REG_0_3 0x22c
/* Interrupt Address Range */
#define VTD_INTERRUPT_ADDR_FIRST 0xfee00000ULL
#define VTD_INTERRUPT_ADDR_LAST 0xfeefffffULL
#define VTD_INTERRUPT_ADDR_SIZE (VTD_INTERRUPT_ADDR_LAST - \
VTD_INTERRUPT_ADDR_FIRST + 1)
/* The shift of source_id in the key of IOTLB hash table */
#define VTD_IOTLB_SID_SHIFT 26
#define VTD_IOTLB_LVL_SHIFT 42
#define VTD_IOTLB_PASID_SHIFT 44
#define VTD_IOTLB_MAX_SIZE 1024 /* Max size of the hash table */
/* IOTLB_REG */
#define VTD_TLB_GLOBAL_FLUSH (1ULL << 60) /* Global invalidation */
#define VTD_TLB_DSI_FLUSH (2ULL << 60) /* Domain-selective */
#define VTD_TLB_PSI_FLUSH (3ULL << 60) /* Page-selective */
#define VTD_TLB_FLUSH_GRANU_MASK (3ULL << 60)
#define VTD_TLB_GLOBAL_FLUSH_A (1ULL << 57)
#define VTD_TLB_DSI_FLUSH_A (2ULL << 57)
#define VTD_TLB_PSI_FLUSH_A (3ULL << 57)
#define VTD_TLB_FLUSH_GRANU_MASK_A (3ULL << 57)
#define VTD_TLB_IVT (1ULL << 63)
#define VTD_TLB_DID(val) (((val) >> 32) & VTD_DOMAIN_ID_MASK)
/* IVA_REG */
#define VTD_IVA_ADDR(val) ((val) & ~0xfffULL)
#define VTD_IVA_AM(val) ((val) & 0x3fULL)
/* GCMD_REG */
#define VTD_GCMD_TE (1UL << 31)
#define VTD_GCMD_SRTP (1UL << 30)
#define VTD_GCMD_SFL (1UL << 29)
#define VTD_GCMD_EAFL (1UL << 28)
#define VTD_GCMD_WBF (1UL << 27)
#define VTD_GCMD_QIE (1UL << 26)
#define VTD_GCMD_IRE (1UL << 25)
#define VTD_GCMD_SIRTP (1UL << 24)
#define VTD_GCMD_CFI (1UL << 23)
/* GSTS_REG */
#define VTD_GSTS_TES (1UL << 31)
#define VTD_GSTS_RTPS (1UL << 30)
#define VTD_GSTS_FLS (1UL << 29)
#define VTD_GSTS_AFLS (1UL << 28)
#define VTD_GSTS_WBFS (1UL << 27)
#define VTD_GSTS_QIES (1UL << 26)
#define VTD_GSTS_IRES (1UL << 25)
#define VTD_GSTS_IRTPS (1UL << 24)
#define VTD_GSTS_CFIS (1UL << 23)
/* CCMD_REG */
#define VTD_CCMD_ICC (1ULL << 63)
#define VTD_CCMD_GLOBAL_INVL (1ULL << 61)
#define VTD_CCMD_DOMAIN_INVL (2ULL << 61)
#define VTD_CCMD_DEVICE_INVL (3ULL << 61)
#define VTD_CCMD_CIRG_MASK (3ULL << 61)
#define VTD_CCMD_GLOBAL_INVL_A (1ULL << 59)
#define VTD_CCMD_DOMAIN_INVL_A (2ULL << 59)
#define VTD_CCMD_DEVICE_INVL_A (3ULL << 59)
#define VTD_CCMD_CAIG_MASK (3ULL << 59)
#define VTD_CCMD_DID(val) ((val) & VTD_DOMAIN_ID_MASK)
#define VTD_CCMD_SID(val) (((val) >> 16) & 0xffffULL)
#define VTD_CCMD_FM(val) (((val) >> 32) & 3ULL)
/* RTADDR_REG */
#define VTD_RTADDR_SMT (1ULL << 10)
#define VTD_RTADDR_ADDR_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
/* IRTA_REG */
#define VTD_IRTA_ADDR_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
#define VTD_IRTA_EIME (1ULL << 11)
#define VTD_IRTA_SIZE_MASK (0xfULL)
/* ECAP_REG */
/* (offset >> 4) << 8 */
#define VTD_ECAP_IRO (DMAR_IOTLB_REG_OFFSET << 4)
#define VTD_ECAP_QI (1ULL << 1)
#define VTD_ECAP_DT (1ULL << 2)
/* Interrupt Remapping support */
#define VTD_ECAP_IR (1ULL << 3)
#define VTD_ECAP_EIM (1ULL << 4)
#define VTD_ECAP_PT (1ULL << 6)
#define VTD_ECAP_SC (1ULL << 7)
#define VTD_ECAP_MHMV (15ULL << 20)
#define VTD_ECAP_SRS (1ULL << 31)
#define VTD_ECAP_PASID (1ULL << 40)
#define VTD_ECAP_SMTS (1ULL << 43)
#define VTD_ECAP_SLTS (1ULL << 46)
/* CAP_REG */
/* (offset >> 4) << 24 */
#define VTD_CAP_FRO (DMAR_FRCD_REG_OFFSET << 20)
#define VTD_CAP_NFR ((DMAR_FRCD_REG_NR - 1) << 40)
#define VTD_DOMAIN_ID_SHIFT 16 /* 16-bit domain id for 64K domains */
#define VTD_DOMAIN_ID_MASK ((1UL << VTD_DOMAIN_ID_SHIFT) - 1)
#define VTD_CAP_ND (((VTD_DOMAIN_ID_SHIFT - 4) / 2) & 7ULL)
#define VTD_ADDRESS_SIZE(aw) (1ULL << (aw))
#define VTD_CAP_MGAW(aw) ((((aw) - 1) & 0x3fULL) << 16)
#define VTD_MAMV 18ULL
#define VTD_CAP_MAMV (VTD_MAMV << 48)
#define VTD_CAP_PSI (1ULL << 39)
#define VTD_CAP_SLLPS ((1ULL << 34) | (1ULL << 35))
#define VTD_CAP_DRAIN_WRITE (1ULL << 54)
#define VTD_CAP_DRAIN_READ (1ULL << 55)
#define VTD_CAP_DRAIN (VTD_CAP_DRAIN_READ | VTD_CAP_DRAIN_WRITE)
#define VTD_CAP_CM (1ULL << 7)
#define VTD_PASID_ID_SHIFT 20
#define VTD_PASID_ID_MASK ((1ULL << VTD_PASID_ID_SHIFT) - 1)
/* Supported Adjusted Guest Address Widths */
#define VTD_CAP_SAGAW_SHIFT 8
#define VTD_CAP_SAGAW_MASK (0x1fULL << VTD_CAP_SAGAW_SHIFT)
/* 39-bit AGAW, 3-level page-table */
#define VTD_CAP_SAGAW_39bit (0x2ULL << VTD_CAP_SAGAW_SHIFT)
/* 48-bit AGAW, 4-level page-table */
#define VTD_CAP_SAGAW_48bit (0x4ULL << VTD_CAP_SAGAW_SHIFT)
/* IQT_REG */
#define VTD_IQT_QT(dw_bit, val) (dw_bit ? (((val) >> 5) & 0x3fffULL) : \
(((val) >> 4) & 0x7fffULL))
#define VTD_IQT_QT_256_RSV_BIT 0x10
/* IQA_REG */
#define VTD_IQA_IQA_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
#define VTD_IQA_QS 0x7ULL
#define VTD_IQA_DW_MASK 0x800
/* IQH_REG */
#define VTD_IQH_QH_SHIFT_4 4
#define VTD_IQH_QH_SHIFT_5 5
#define VTD_IQH_QH_MASK 0x7fff0ULL
/* ICS_REG */
#define VTD_ICS_IWC 1UL
/* IECTL_REG */
#define VTD_IECTL_IM (1UL << 31)
#define VTD_IECTL_IP (1UL << 30)
/* FSTS_REG */
#define VTD_FSTS_FRI_MASK 0xff00UL
#define VTD_FSTS_FRI(val) ((((uint32_t)(val)) << 8) & VTD_FSTS_FRI_MASK)
#define VTD_FSTS_IQE (1UL << 4)
#define VTD_FSTS_PPF (1UL << 1)
#define VTD_FSTS_PFO 1UL
/* FECTL_REG */
#define VTD_FECTL_IM (1UL << 31)
#define VTD_FECTL_IP (1UL << 30)
/* Fault Recording Register */
/* For the high 64-bit of 128-bit */
#define VTD_FRCD_F (1ULL << 63)
#define VTD_FRCD_T (1ULL << 62)
#define VTD_FRCD_FR(val) (((val) & 0xffULL) << 32)
#define VTD_FRCD_SID_MASK 0xffffULL
#define VTD_FRCD_SID(val) ((val) & VTD_FRCD_SID_MASK)
/* For the low 64-bit of 128-bit */
#define VTD_FRCD_FI(val) ((val) & ~0xfffULL)
#define VTD_FRCD_PV(val) (((val) & 0xffffULL) << 40)
#define VTD_FRCD_PP(val) (((val) & 0x1) << 31)
/* DMA Remapping Fault Conditions */
typedef enum VTDFaultReason {
VTD_FR_RESERVED = 0, /* Reserved for Advanced Fault logging */
VTD_FR_ROOT_ENTRY_P = 1, /* The Present(P) field of root-entry is 0 */
VTD_FR_CONTEXT_ENTRY_P, /* The Present(P) field of context-entry is 0 */
VTD_FR_CONTEXT_ENTRY_INV, /* Invalid programming of a context-entry */
VTD_FR_ADDR_BEYOND_MGAW, /* Input-address above (2^x-1) */
VTD_FR_WRITE, /* No write permission */
VTD_FR_READ, /* No read permission */
/* Fail to access a second-level paging entry (not SL_PML4E) */
VTD_FR_PAGING_ENTRY_INV,
VTD_FR_ROOT_TABLE_INV, /* Fail to access a root-entry */
VTD_FR_CONTEXT_TABLE_INV, /* Fail to access a context-entry */
/* Non-zero reserved field in a present root-entry */
VTD_FR_ROOT_ENTRY_RSVD,
/* Non-zero reserved field in a present context-entry */
VTD_FR_CONTEXT_ENTRY_RSVD,
/* Non-zero reserved field in a second-level paging entry with at lease one
* Read(R) and Write(W) or Execute(E) field is Set.
*/
VTD_FR_PAGING_ENTRY_RSVD,
/* Translation request or translated request explicitly blocked dut to the
* programming of the Translation Type (T) field in the present
* context-entry.
*/
VTD_FR_CONTEXT_ENTRY_TT,
/* Output address in the interrupt address range */
VTD_FR_INTERRUPT_ADDR = 0xE,
/* Interrupt remapping transition faults */
VTD_FR_IR_REQ_RSVD = 0x20, /* One or more IR request reserved
* fields set */
VTD_FR_IR_INDEX_OVER = 0x21, /* Index value greater than max */
VTD_FR_IR_ENTRY_P = 0x22, /* Present (P) not set in IRTE */
VTD_FR_IR_ROOT_INVAL = 0x23, /* IR Root table invalid */
VTD_FR_IR_IRTE_RSVD = 0x24, /* IRTE Rsvd field non-zero with
* Present flag set */
VTD_FR_IR_REQ_COMPAT = 0x25, /* Encountered compatible IR
* request while disabled */
VTD_FR_IR_SID_ERR = 0x26, /* Invalid Source-ID */
VTD_FR_PASID_TABLE_INV = 0x58, /*Invalid PASID table entry */
/* Output address in the interrupt address range for scalable mode */
VTD_FR_SM_INTERRUPT_ADDR = 0x87,
VTD_FR_MAX, /* Guard */
} VTDFaultReason;
#define VTD_CONTEXT_CACHE_GEN_MAX 0xffffffffUL
/* Interrupt Entry Cache Invalidation Descriptor: VT-d 6.5.2.7. */
struct VTDInvDescIEC {
uint32_t type:4; /* Should always be 0x4 */
uint32_t granularity:1; /* If set, it's global IR invalidation */
uint32_t resved_1:22;
uint32_t index_mask:5; /* 2^N for continuous int invalidation */
uint32_t index:16; /* Start index to invalidate */
uint32_t reserved_2:16;
};
typedef struct VTDInvDescIEC VTDInvDescIEC;
/* Queued Invalidation Descriptor */
union VTDInvDesc {
struct {
uint64_t lo;
uint64_t hi;
};
struct {
uint64_t val[4];
};
union {
VTDInvDescIEC iec;
};
};
typedef union VTDInvDesc VTDInvDesc;
/* Masks for struct VTDInvDesc */
#define VTD_INV_DESC_TYPE 0xf
#define VTD_INV_DESC_CC 0x1 /* Context-cache Invalidate Desc */
#define VTD_INV_DESC_IOTLB 0x2
#define VTD_INV_DESC_DEVICE 0x3
#define VTD_INV_DESC_IEC 0x4 /* Interrupt Entry Cache
Invalidate Descriptor */
#define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descriptor */
#define VTD_INV_DESC_PIOTLB 0x6 /* PASID-IOTLB Invalidate Desc */
#define VTD_INV_DESC_PC 0x7 /* PASID-cache Invalidate Desc */
#define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descriptor */
/* Masks for Invalidation Wait Descriptor*/
#define VTD_INV_DESC_WAIT_SW (1ULL << 5)
#define VTD_INV_DESC_WAIT_IF (1ULL << 4)
#define VTD_INV_DESC_WAIT_FN (1ULL << 6)
#define VTD_INV_DESC_WAIT_DATA_SHIFT 32
#define VTD_INV_DESC_WAIT_RSVD_LO 0Xffffff80ULL
#define VTD_INV_DESC_WAIT_RSVD_HI 3ULL
/* Masks for Context-cache Invalidation Descriptor */
#define VTD_INV_DESC_CC_G (3ULL << 4)
#define VTD_INV_DESC_CC_GLOBAL (1ULL << 4)
#define VTD_INV_DESC_CC_DOMAIN (2ULL << 4)
#define VTD_INV_DESC_CC_DEVICE (3ULL << 4)
#define VTD_INV_DESC_CC_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK)
#define VTD_INV_DESC_CC_SID(val) (((val) >> 32) & 0xffffUL)
#define VTD_INV_DESC_CC_FM(val) (((val) >> 48) & 3UL)
#define VTD_INV_DESC_CC_RSVD 0xfffc00000000ffc0ULL
/* Masks for IOTLB Invalidate Descriptor */
#define VTD_INV_DESC_IOTLB_G (3ULL << 4)
#define VTD_INV_DESC_IOTLB_GLOBAL (1ULL << 4)
#define VTD_INV_DESC_IOTLB_DOMAIN (2ULL << 4)
#define VTD_INV_DESC_IOTLB_PAGE (3ULL << 4)
#define VTD_INV_DESC_IOTLB_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK)
#define VTD_INV_DESC_IOTLB_ADDR(val) ((val) & ~0xfffULL)
#define VTD_INV_DESC_IOTLB_AM(val) ((val) & 0x3fULL)
#define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000ff00ULL
#define VTD_INV_DESC_IOTLB_RSVD_HI 0xf80ULL
#define VTD_INV_DESC_IOTLB_PASID_PASID (2ULL << 4)
#define VTD_INV_DESC_IOTLB_PASID_PAGE (3ULL << 4)
#define VTD_INV_DESC_IOTLB_PASID(val) (((val) >> 32) & VTD_PASID_ID_MASK)
#define VTD_INV_DESC_IOTLB_PASID_RSVD_LO 0xfff00000000001c0ULL
#define VTD_INV_DESC_IOTLB_PASID_RSVD_HI 0xf80ULL
/* Mask for Device IOTLB Invalidate Descriptor */
#define VTD_INV_DESC_DEVICE_IOTLB_ADDR(val) ((val) & 0xfffffffffffff000ULL)
#define VTD_INV_DESC_DEVICE_IOTLB_SIZE(val) ((val) & 0x1)
#define VTD_INV_DESC_DEVICE_IOTLB_SID(val) (((val) >> 32) & 0xFFFFULL)
#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_HI 0xffeULL
#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8
/* Rsvd field masks for spte */
#define VTD_SPTE_SNP 0x800ULL
#define VTD_SPTE_PAGE_L1_RSVD_MASK(aw, dt_supported) \
dt_supported ? \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L2_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L3_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L2_RSVD_MASK(aw, dt_supported) \
dt_supported ? \
(0x1ff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x1ff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L3_RSVD_MASK(aw, dt_supported) \
dt_supported ? \
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM | VTD_SL_TM)) : \
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
/* Information about page-selective IOTLB invalidate */
struct VTDIOTLBPageInvInfo {
uint16_t domain_id;
uint32_t pasid;
uint64_t addr;
uint8_t mask;
};
typedef struct VTDIOTLBPageInvInfo VTDIOTLBPageInvInfo;
/* Pagesize of VTD paging structures, including root and context tables */
#define VTD_PAGE_SHIFT 12
#define VTD_PAGE_SIZE (1ULL << VTD_PAGE_SHIFT)
#define VTD_PAGE_SHIFT_4K 12
#define VTD_PAGE_MASK_4K (~((1ULL << VTD_PAGE_SHIFT_4K) - 1))
#define VTD_PAGE_SHIFT_2M 21
#define VTD_PAGE_MASK_2M (~((1ULL << VTD_PAGE_SHIFT_2M) - 1))
#define VTD_PAGE_SHIFT_1G 30
#define VTD_PAGE_MASK_1G (~((1ULL << VTD_PAGE_SHIFT_1G) - 1))
struct VTDRootEntry {
uint64_t lo;
uint64_t hi;
};
typedef struct VTDRootEntry VTDRootEntry;
/* Masks for struct VTDRootEntry */
#define VTD_ROOT_ENTRY_P 1ULL
#define VTD_ROOT_ENTRY_CTP (~0xfffULL)
#define VTD_ROOT_ENTRY_NR (VTD_PAGE_SIZE / sizeof(VTDRootEntry))
#define VTD_ROOT_ENTRY_RSVD(aw) (0xffeULL | ~VTD_HAW_MASK(aw))
#define VTD_DEVFN_CHECK_MASK 0x80
/* Masks for struct VTDContextEntry */
/* lo */
#define VTD_CONTEXT_ENTRY_P (1ULL << 0)
#define VTD_CONTEXT_ENTRY_FPD (1ULL << 1) /* Fault Processing Disable */
#define VTD_CONTEXT_ENTRY_TT (3ULL << 2) /* Translation Type */
#define VTD_CONTEXT_TT_MULTI_LEVEL 0
#define VTD_CONTEXT_TT_DEV_IOTLB (1ULL << 2)
#define VTD_CONTEXT_TT_PASS_THROUGH (2ULL << 2)
/* Second Level Page Translation Pointer*/
#define VTD_CONTEXT_ENTRY_SLPTPTR (~0xfffULL)
#define VTD_CONTEXT_ENTRY_RSVD_LO(aw) (0xff0ULL | ~VTD_HAW_MASK(aw))
/* hi */
#define VTD_CONTEXT_ENTRY_AW 7ULL /* Adjusted guest-address-width */
#define VTD_CONTEXT_ENTRY_DID(val) (((val) >> 8) & VTD_DOMAIN_ID_MASK)
#define VTD_CONTEXT_ENTRY_RSVD_HI 0xffffffffff000080ULL
#define VTD_CONTEXT_ENTRY_NR (VTD_PAGE_SIZE / sizeof(VTDContextEntry))
#define VTD_CTX_ENTRY_LEGACY_SIZE 16
#define VTD_CTX_ENTRY_SCALABLE_SIZE 32
#define VTD_SM_CONTEXT_ENTRY_RID2PASID_MASK 0xfffff
#define VTD_SM_CONTEXT_ENTRY_RSVD_VAL0(aw) (0x1e0ULL | ~VTD_HAW_MASK(aw))
#define VTD_SM_CONTEXT_ENTRY_RSVD_VAL1 0xffffffffffe00000ULL
/* PASID Table Related Definitions */
#define VTD_PASID_DIR_BASE_ADDR_MASK (~0xfffULL)
#define VTD_PASID_TABLE_BASE_ADDR_MASK (~0xfffULL)
#define VTD_PASID_DIR_ENTRY_SIZE 8
#define VTD_PASID_ENTRY_SIZE 64
#define VTD_PASID_DIR_BITS_MASK (0x3fffULL)
#define VTD_PASID_DIR_INDEX(pasid) (((pasid) >> 6) & VTD_PASID_DIR_BITS_MASK)
#define VTD_PASID_DIR_FPD (1ULL << 1) /* Fault Processing Disable */
#define VTD_PASID_TABLE_BITS_MASK (0x3fULL)
#define VTD_PASID_TABLE_INDEX(pasid) ((pasid) & VTD_PASID_TABLE_BITS_MASK)
#define VTD_PASID_ENTRY_FPD (1ULL << 1) /* Fault Processing Disable */
/* PASID Granular Translation Type Mask */
#define VTD_PASID_ENTRY_P 1ULL
#define VTD_SM_PASID_ENTRY_PGTT (7ULL << 6)
#define VTD_SM_PASID_ENTRY_FLT (1ULL << 6)
#define VTD_SM_PASID_ENTRY_SLT (2ULL << 6)
#define VTD_SM_PASID_ENTRY_NESTED (3ULL << 6)
#define VTD_SM_PASID_ENTRY_PT (4ULL << 6)
#define VTD_SM_PASID_ENTRY_AW 7ULL /* Adjusted guest-address-width */
#define VTD_SM_PASID_ENTRY_DID(val) ((val) & VTD_DOMAIN_ID_MASK)
/* Second Level Page Translation Pointer*/
#define VTD_SM_PASID_ENTRY_SLPTPTR (~0xfffULL)
/* Paging Structure common */
#define VTD_SL_PT_PAGE_SIZE_MASK (1ULL << 7)
/* Bits to decide the offset for each level */
#define VTD_SL_LEVEL_BITS 9
/* Second Level Paging Structure */
#define VTD_SL_PML4_LEVEL 4
#define VTD_SL_PDP_LEVEL 3
#define VTD_SL_PD_LEVEL 2
#define VTD_SL_PT_LEVEL 1
#define VTD_SL_PT_ENTRY_NR 512
/* Masks for Second Level Paging Entry */
#define VTD_SL_RW_MASK 3ULL
#define VTD_SL_R 1ULL
#define VTD_SL_W (1ULL << 1)
#define VTD_SL_PT_BASE_ADDR_MASK(aw) (~(VTD_PAGE_SIZE - 1) & VTD_HAW_MASK(aw))
#define VTD_SL_IGN_COM 0xbff0000000000000ULL
#define VTD_SL_TM (1ULL << 62)
#endif
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