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/qdev-core.h"
  16#include "hw/i386/hostmem-epc.h"
  17
  18#define TYPE_SGX_EPC "sgx-epc"
  19#define SGX_EPC(obj) \
  20    OBJECT_CHECK(SGXEPCDevice, (obj), TYPE_SGX_EPC)
  21#define SGX_EPC_CLASS(oc) \
  22    OBJECT_CLASS_CHECK(SGXEPCDeviceClass, (oc), TYPE_SGX_EPC)
  23#define SGX_EPC_GET_CLASS(obj) \
  24    OBJECT_GET_CLASS(SGXEPCDeviceClass, (obj), TYPE_SGX_EPC)
  25
  26#define SGX_EPC_ADDR_PROP "addr"
  27#define SGX_EPC_SIZE_PROP "size"
  28#define SGX_EPC_MEMDEV_PROP "memdev"
  29#define SGX_EPC_NUMA_NODE_PROP "node"
  30
  31/**
  32 * SGXEPCDevice:
  33 * @addr: starting guest physical address, where @SGXEPCDevice is mapped.
  34 *         Default value: 0, means that address is auto-allocated.
  35 * @hostmem: host memory backend providing memory for @SGXEPCDevice
  36 */
  37typedef struct SGXEPCDevice {
  38    /* private */
  39    DeviceState parent_obj;
  40
  41    /* public */
  42    uint64_t addr;
  43    uint32_t node;
  44    HostMemoryBackendEpc *hostmem;
  45} SGXEPCDevice;
  46
  47/*
  48 * @base: address in guest physical address space where EPC regions start
  49 * @mr: address space container for memory devices
  50 */
  51typedef struct SGXEPCState {
  52    uint64_t base;
  53    uint64_t size;
  54
  55    MemoryRegion mr;
  56
  57    struct SGXEPCDevice **sections;
  58    int nr_sections;
  59} SGXEPCState;
  60
  61bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size);
  62void sgx_epc_build_srat(GArray *table_data);
  63
  64static inline uint64_t sgx_epc_above_4g_end(SGXEPCState *sgx_epc)
  65{
  66    assert(sgx_epc != NULL && sgx_epc->base >= 0x100000000ULL);
  67
  68    return sgx_epc->base + sgx_epc->size;
  69}
  70
  71#endif
  72