LXR qemu/include/hw/i386/sgx-epc.h

   1/*
   2 * SGX EPC device
   3 *
   4 * Copyright (C) 2019 Intel Corporation
   5 *
   6 * Authors:
   7 *   Sean Christopherson <sean.j.christopherson@intel.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10 * See the COPYING file in the top-level directory.
  11 */
  12#ifndef QEMU_SGX_EPC_H
  13#define QEMU_SGX_EPC_H
  14
  15#include "hw/i386/hostmem-epc.h"
  16
  17#define TYPE_SGX_EPC "sgx-epc"
  18#define SGX_EPC(obj) \
  19    OBJECT_CHECK(SGXEPCDevice, (obj), TYPE_SGX_EPC)
  20#define SGX_EPC_CLASS(oc) \
  21    OBJECT_CLASS_CHECK(SGXEPCDeviceClass, (oc), TYPE_SGX_EPC)
  22#define SGX_EPC_GET_CLASS(obj) \
  23    OBJECT_GET_CLASS(SGXEPCDeviceClass, (obj), TYPE_SGX_EPC)
  24
  25#define SGX_EPC_ADDR_PROP "addr"
  26#define SGX_EPC_SIZE_PROP "size"
  27#define SGX_EPC_MEMDEV_PROP "memdev"
  28#define SGX_EPC_NUMA_NODE_PROP "node"
  29
  30/**
  31 * SGXEPCDevice:
  32 * @addr: starting guest physical address, where @SGXEPCDevice is mapped.
  33 *         Default value: 0, means that address is auto-allocated.
  34 * @hostmem: host memory backend providing memory for @SGXEPCDevice
  35 */
  36typedef struct SGXEPCDevice {
  37    /* private */
  38    DeviceState parent_obj;
  39
  40    /* public */
  41    uint64_t addr;
  42    uint32_t node;
  43    HostMemoryBackendEpc *hostmem;
  44} SGXEPCDevice;
  45
  46/*
  47 * @base: address in guest physical address space where EPC regions start
  48 * @mr: address space container for memory devices
  49 */
  50typedef struct SGXEPCState {
  51    uint64_t base;
  52    uint64_t size;
  53
  54    MemoryRegion mr;
  55
  56    struct SGXEPCDevice **sections;
  57    int nr_sections;
  58} SGXEPCState;
  59
  60bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size);
  61void sgx_epc_build_srat(GArray *table_data);
  62
  63static inline uint64_t sgx_epc_above_4g_end(SGXEPCState *sgx_epc)
  64{
  65    assert(sgx_epc != NULL && sgx_epc->base >= 0x100000000ULL);
  66
  67    return sgx_epc->base + sgx_epc->size;
  68}
  69
  70#endif
  71