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hv: add the support of vector remapping for pre-launched VMs

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For pre-launched VMs MSI/MSI-x configuration writes are not intercepted by ACRN.
It is pass-thru and interrupts land in ACRN and the guest vector is injected into
the VM's vLAPIC. With this patch, ACRN intercepts MSI/MSI-x config writes and take
the code path to remap interrupt vector/APIC ID as it does for SOS/UOS.

Tracked-On: #2879
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Sainath Grandhi
2019-04-02 22:51:32 -07:00
committed by Eddie Dong
parent c4ec7ac358
commit 5b795a3312
7 changed files with 235 additions and 160 deletions
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12
hypervisor/dm/vpci/vpci_priv.h
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@@ -67,21 +67,29 @@ static inline void pci_vdev_write_cfg_u32(struct pci_vdev *vdev, uint32_t offset
vdev->cfgdata.data_32[offset >> 2U] = val;
}
/**
* @pre vdev != NULL
*/
static inline bool has_msix_cap(const struct pci_vdev *vdev)
{
return (vdev->msix.capoff != 0U);
}
void vdev_hostbridge_init(struct pci_vdev *vdev);
int32_t vdev_hostbridge_cfgread(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
int32_t vdev_hostbridge_cfgwrite(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
void vdev_hostbridge_deinit(__unused const struct pci_vdev *vdev);
void vdev_pt_init(const struct pci_vdev *vdev);
int32_t vdev_pt_cfgread(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
int32_t vdev_pt_cfgwrite(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
void vdev_pt_deinit(const struct pci_vdev *vdev);
void vmsi_init(struct pci_vdev *vdev);
int32_t vmsi_cfgread(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
int32_t vmsi_cfgwrite(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
void vmsi_deinit(const struct pci_vdev *vdev);
void vmsix_init(struct pci_vdev *vdev);
void vdev_pt_remap_msix_table_bar(struct pci_vdev *vdev);
int32_t vmsix_table_mmio_access_handler(struct io_request *io_req, void *handler_private_data);
int32_t vmsix_cfgread(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t *val);
int32_t vmsix_cfgwrite(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
void vmsix_deinit(const struct pci_vdev *vdev);