1 files changed, 64 insertions, 0 deletions
diff --git a/include/system/mshv.h b/include/system/mshv.h
new file mode 100644
index 0000000..8b1fc20
--- /dev/null
+++ b/include/system/mshv.h
@@ -0,0 +1,64 @@
+/*
+ * 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_H
+#define QEMU_MSHV_H
+
+#include "qemu/osdep.h"
+#include "qemu/accel.h"
+#include "hw/hyperv/hyperv-proto.h"
+#include "hw/hyperv/hvhdk.h"
+#include "hw/hyperv/hvgdk_mini.h"
+#include "qapi/qapi-types-common.h"
+#include "system/memory.h"
+#include "accel/accel-ops.h"
+
+#ifdef COMPILING_PER_TARGET
+#ifdef CONFIG_MSHV
+#include <linux/mshv.h>
+#define CONFIG_MSHV_IS_POSSIBLE
+#endif
+#else
+#define CONFIG_MSHV_IS_POSSIBLE
+#endif
+
+#define MSHV_MAX_MSI_ROUTES 4096
+
+#define MSHV_PAGE_SHIFT 12
+
+#ifdef CONFIG_MSHV_IS_POSSIBLE
+extern bool mshv_allowed;
+#define mshv_enabled() (mshv_allowed)
+#define mshv_msi_via_irqfd_enabled() mshv_enabled()
+#else /* CONFIG_MSHV_IS_POSSIBLE */
+#define mshv_enabled() false
+#define mshv_msi_via_irqfd_enabled() mshv_enabled()
+#endif
+
+typedef struct MshvState MshvState;
+extern MshvState *mshv_state;
+
+/* interrupt */
+int mshv_request_interrupt(MshvState *mshv_state, uint32_t interrupt_type, uint32_t vector,
+                           uint32_t vp_index, bool logical_destination_mode,
+                           bool level_triggered);
+
+int mshv_irqchip_add_msi_route(int vector, PCIDevice *dev);
+int mshv_irqchip_update_msi_route(int virq, MSIMessage msg, PCIDevice *dev);
+void mshv_irqchip_commit_routes(void);
+void mshv_irqchip_release_virq(int virq);
+int mshv_irqchip_add_irqfd_notifier_gsi(const EventNotifier *n,
+                                        const EventNotifier *rn, int virq);
+int mshv_irqchip_remove_irqfd_notifier_gsi(const EventNotifier *n, int virq);
+
+#endif