qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
Log | Files | Refs | Submodules | LICENSE

sgx-epc.h (1806B)

      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  */
     36 typedef 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  */
     50 typedef 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 
     60 bool sgx_epc_get_section(int section_nr, uint64_t *addr, uint64_t *size);
     61 void sgx_epc_build_srat(GArray *table_data);
     62 
     63 static 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