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hv: add ivshmem device

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Ivshmem device is used for shared memory based communication between
pre-launched/post-launched VMs.

this patch implements ivshmem device configuration space initialization
and ivshmem device operation methods.

v2: introduce init_one_pcibar interface to simplify BAR initialization
    operation of HV emulated PCI device.

v3: 1) due to init_one_pcibar API is only used for pre-launched VM vdevs
       it can't be applied to all vdevs, so remove it.
    2) move ivshmem BARs initialization to subsequent patch, this patch
       only introduce ivshmem configuration space initialization.

Tracked-On: #4853

Signed-off-by: Yuan Liu <yuan1.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Yuan Liu
2020-08-14 12:08:22 +08:00
committed by wenlingz
parent d6f563c4eb
commit 92f9f5a4f3
2 changed files with 50 additions and 0 deletions
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2
hypervisor/include/dm/ivshmem.h
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@@ -14,6 +14,8 @@ struct ivshmem_shm_region {
uint64_t size;
};
extern const struct pci_vdev_ops vpci_ivshmem_ops;
/**
* @brief Initialize ivshmem shared memory regions
*