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9b4ba19753
This patch enables doorbell feature for hv-land ivshmem device to support interrupt notification between VMs that use inter-VM(ivshmem) devices. Tracked-On: #5407 Signed-off-by: Yonghua Huang <yonghua.huang@intel.com> Reviewed-by: Li, Fei <fei1.li@intel.com> Reviewed-by: Wang, Yu1 <yu1.wang@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/*
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* Copyright (C) 2020 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef IVSHMEM_H
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#define IVSHMEM_H
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#define IVSHMEM_VENDOR_ID 0x1af4U
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#define IVSHMEM_DEVICE_ID 0x1110U
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#ifdef CONFIG_IVSHMEM_ENABLED
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/*
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* Max number of peers for each ivshmem region, and
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* VM ID is used as peer IDs of this VM's ivshmem devices.
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*/
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#define MAX_IVSHMEM_PEER_NUM (CONFIG_MAX_VM_NUM)
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/* Max number of MSIX table entries of shmem device. */
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#define MAX_IVSHMEM_MSIX_TBL_ENTRY_NUM 8U
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struct ivshmem_shm_region {
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char name[32];
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uint64_t hpa;
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uint64_t size;
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struct ivshmem_device *doorbell_peers[MAX_IVSHMEM_PEER_NUM];
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};
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extern const struct pci_vdev_ops vpci_ivshmem_ops;
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/**
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* @brief Initialize ivshmem shared memory regions
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*
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* Initialize ivshmem shared memory regions based on user configuration.
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*
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* @return None
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*/
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void init_ivshmem_shared_memory(void);
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int32_t create_ivshmem_vdev(struct acrn_vm *vm, struct acrn_emul_dev *dev);
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int32_t destroy_ivshmem_vdev(struct acrn_vm *vm, struct acrn_emul_dev *dev);
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#endif /* CONFIG_IVSHMEM_ENABLED */
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#endif /* IVSHMEM_H */
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