1 files changed, 155 insertions, 0 deletions
diff --git a/include/system/mshv_int.h b/include/system/mshv_int.h
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--- /dev/null
+++ b/include/system/mshv_int.h
@@ -0,0 +1,155 @@
+/*
+ * QEMU MSHV support
+ *
+ * Copyright Microsoft, Corp. 2025
+ *
+ * Authors: Ziqiao Zhou  <ziqiaozhou@microsoft.com>
+ *          Magnus Kulke <magnuskulke@microsoft.com>
+ *          Jinank Jain  <jinankjain@microsoft.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ */
+
+#ifndef QEMU_MSHV_INT_H
+#define QEMU_MSHV_INT_H
+
+#define MSHV_MSR_ENTRIES_COUNT 64
+
+#define MSHV_MAX_MEM_SLOTS 32
+
+typedef struct hyperv_message hv_message;
+
+typedef struct MshvHvCallArgs {
+    void *base;
+    void *input_page;
+    void *output_page;
+} MshvHvCallArgs;
+
+struct AccelCPUState {
+    int cpufd;
+    bool dirty;
+    MshvHvCallArgs hvcall_args;
+};
+
+typedef struct MshvMemoryListener {
+    MemoryListener listener;
+    int as_id;
+} MshvMemoryListener;
+
+typedef struct MshvAddressSpace {
+    MshvMemoryListener *ml;
+    AddressSpace *as;
+} MshvAddressSpace;
+
+typedef struct MshvMemorySlotManager {
+    size_t n_slots;
+    GList *slots;
+    QemuMutex mutex;
+} MshvMemorySlotManager;
+
+struct MshvState {
+    AccelState parent_obj;
+    int vm;
+    MshvMemoryListener memory_listener;
+    /* number of listeners */
+    int nr_as;
+    MshvAddressSpace *as;
+    int fd;
+    MshvMemorySlotManager msm;
+};
+
+typedef struct MshvMsiControl {
+    bool updated;
+    GHashTable *gsi_routes;
+} MshvMsiControl;
+
+#define mshv_vcpufd(cpu) (cpu->accel->cpufd)
+
+/* cpu */
+typedef struct MshvFPU {
+    uint8_t fpr[8][16];
+    uint16_t fcw;
+    uint16_t fsw;
+    uint8_t ftwx;
+    uint8_t pad1;
+    uint16_t last_opcode;
+    uint64_t last_ip;
+    uint64_t last_dp;
+    uint8_t xmm[16][16];
+    uint32_t mxcsr;
+    uint32_t pad2;
+} MshvFPU;
+
+typedef enum MshvVmExit {
+    MshvVmExitIgnore   = 0,
+    MshvVmExitShutdown = 1,
+    MshvVmExitSpecial  = 2,
+} MshvVmExit;
+
+typedef enum MshvRemapResult {
+    MshvRemapOk = 0,
+    MshvRemapNoMapping = 1,
+    MshvRemapNoOverlap = 2,
+} MshvRemapResult;
+
+void mshv_init_mmio_emu(void);
+int mshv_create_vcpu(int vm_fd, uint8_t vp_index, int *cpu_fd);
+void mshv_remove_vcpu(int vm_fd, int cpu_fd);
+int mshv_configure_vcpu(const CPUState *cpu, const MshvFPU *fpu, uint64_t xcr0);
+int mshv_get_standard_regs(CPUState *cpu);
+int mshv_get_special_regs(CPUState *cpu);
+int mshv_run_vcpu(int vm_fd, CPUState *cpu, hv_message *msg, MshvVmExit *exit);
+int mshv_load_regs(CPUState *cpu);
+int mshv_store_regs(CPUState *cpu);
+int mshv_set_generic_regs(const CPUState *cpu, const hv_register_assoc *assocs,
+                          size_t n_regs);
+int mshv_arch_put_registers(const CPUState *cpu);
+void mshv_arch_init_vcpu(CPUState *cpu);
+void mshv_arch_destroy_vcpu(CPUState *cpu);
+void mshv_arch_amend_proc_features(
+    union hv_partition_synthetic_processor_features *features);
+int mshv_arch_post_init_vm(int vm_fd);
+
+#if defined COMPILING_PER_TARGET && defined CONFIG_MSHV_IS_POSSIBLE
+int mshv_hvcall(int fd, const struct mshv_root_hvcall *args);
+#endif
+
+/* memory */
+typedef struct MshvMemorySlot {
+    uint64_t guest_phys_addr;
+    uint64_t memory_size;
+    uint64_t userspace_addr;
+    bool readonly;
+    bool mapped;
+} MshvMemorySlot;
+
+MshvRemapResult mshv_remap_overlap_region(int vm_fd, uint64_t gpa);
+int mshv_guest_mem_read(uint64_t gpa, uint8_t *data, uintptr_t size,
+                        bool is_secure_mode, bool instruction_fetch);
+int mshv_guest_mem_write(uint64_t gpa, const uint8_t *data, uintptr_t size,
+                         bool is_secure_mode);
+void mshv_set_phys_mem(MshvMemoryListener *mml, MemoryRegionSection *section,
+                       bool add);
+void mshv_init_memory_slot_manager(MshvState *mshv_state);
+
+/* msr */
+typedef struct MshvMsrEntry {
+  uint32_t index;
+  uint32_t reserved;
+  uint64_t data;
+} MshvMsrEntry;
+
+typedef struct MshvMsrEntries {
+    MshvMsrEntry entries[MSHV_MSR_ENTRIES_COUNT];
+    uint32_t nmsrs;
+} MshvMsrEntries;
+
+int mshv_configure_msr(const CPUState *cpu, const MshvMsrEntry *msrs,
+                       size_t n_msrs);
+
+/* interrupt */
+void mshv_init_msicontrol(void);
+int mshv_reserve_ioapic_msi_routes(int vm_fd);
+
+#endif