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vfio/quirks: Add quirk reset callback 

Quirks can be self modifying, provide a hook to allow them to cleanup
on device reset if desired.

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Alex Williamson 2018-06-05 08:23:17 -06:00
parent bcf3c3d029
commit 469d02de99
3 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
hw/vfio/pci-quirks.c
View File

@ -1694,6 +1694,21 @@ void vfio_bar_quirk_finalize(VFIOPCIDevice *vdev, int nr)
/*
* Reset quirks
*/
void vfio_quirk_reset(VFIOPCIDevice *vdev)
{
int i;
for (i = 0; i < PCI_ROM_SLOT; i++) {
VFIOQuirk *quirk;
VFIOBAR *bar = &vdev->bars[i];
QLIST_FOREACH(quirk, &bar->quirks, next) {
if (quirk->reset) {
quirk->reset(vdev, quirk);
}
}
}
}
/*
* AMD Radeon PCI config reset, based on Linux:

2
hw/vfio/pci.c
View File

@ -2207,6 +2207,8 @@ static void vfio_pci_post_reset(VFIOPCIDevice *vdev)
vdev->vbasedev.name, nr);
}
}
vfio_quirk_reset(vdev);
}
static bool vfio_pci_host_match(PCIHostDeviceAddress *addr, const char *name)

2
hw/vfio/pci.h
View File

@ -29,6 +29,7 @@ typedef struct VFIOQuirk {
void *data;
int nr_mem;
MemoryRegion *mem;
void (*reset)(struct VFIOPCIDevice *vdev, struct VFIOQuirk *quirk);
} VFIOQuirk;
typedef struct VFIOBAR {
@ -167,6 +168,7 @@ void vfio_bar_quirk_exit(VFIOPCIDevice *vdev, int nr);
void vfio_bar_quirk_finalize(VFIOPCIDevice *vdev, int nr);
void vfio_setup_resetfn_quirk(VFIOPCIDevice *vdev);
int vfio_add_virt_caps(VFIOPCIDevice *vdev, Error **errp);
void vfio_quirk_reset(VFIOPCIDevice *vdev);
extern const PropertyInfo qdev_prop_nv_gpudirect_clique;