Commit 469d02de authored by Alex Williamson's avatar Alex Williamson
Browse files

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: default avatarEric Auger <eric.auger@redhat.com>
Reviewed-by: default avatarPeter Xu <peterx@redhat.com>
Signed-off-by: default avatarAlex Williamson <alex.williamson@redhat.com>
parent bcf3c3d0

hw/vfio/pci-quirks.c

+15 −0
Original line number Diff line number Diff line
@@ -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:

hw/vfio/pci.c

+2 −0
Original line number Diff line number Diff line
@@ -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)

hw/vfio/pci.h

+2 −0
Original line number Diff line number Diff line
@@ -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;