vfio/common: Move vfio_host_win_add/del into spapr.c

Only spapr supports a customed host window list, other vfio driver
assume 64bit host window. So remove the check in listener callback
and move vfio_host_win_add/del into spapr.c and make it static.

With the check removed, we still need to do the same check for
VFIO_SPAPR_TCE_IOMMU which allows a single host window range
[dma32_window_start, dma32_window_size). Move vfio_find_hostwin
into spapr.c and do same check in vfio_container_add_section_window
instead.

When mapping a ram device section, if it's unaligned with
hostwin->iova_pgsizes, this mapping is bypassed. With hostwin
moved into spapr, we changed to check container->pgsizes.

Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

1 files changed, 0 insertions, 16 deletions

diff --git a/hw/vfio/container.c b/hw/vfio/container.c
index 204b244..2420100 100644
--- a/hw/vfio/container.c
+++ b/hw/vfio/container.c
@@ -551,7 +551,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
     container->dma_max_mappings = 0;
     container->iova_ranges = NULL;
     QLIST_INIT(&container->giommu_list);
-    QLIST_INIT(&container->hostwin_list);
     QLIST_INIT(&container->vrdl_list);
 
     ret = vfio_init_container(container, group->fd, errp);
@@ -591,14 +590,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
 
         vfio_get_iommu_info_migration(container, info);
         g_free(info);
-
-        /*
-         * FIXME: We should parse VFIO_IOMMU_TYPE1_INFO_CAP_IOVA_RANGE
-         * information to get the actual window extent rather than assume
-         * a 64-bit IOVA address space.
-         */
-        vfio_host_win_add(container, 0, (hwaddr)-1, container->pgsizes);
-
         break;
     }
     case VFIO_SPAPR_TCE_v2_IOMMU:
@@ -687,7 +678,6 @@ static void vfio_disconnect_container(VFIOGroup *group)
     if (QLIST_EMPTY(&container->group_list)) {
         VFIOAddressSpace *space = container->space;
         VFIOGuestIOMMU *giommu, *tmp;
-        VFIOHostDMAWindow *hostwin, *next;
 
         QLIST_REMOVE(container, next);
 
@@ -698,12 +688,6 @@ static void vfio_disconnect_container(VFIOGroup *group)
             g_free(giommu);
         }
 
-        QLIST_FOREACH_SAFE(hostwin, &container->hostwin_list, hostwin_next,
-                           next) {
-            QLIST_REMOVE(hostwin, hostwin_next);
-            g_free(hostwin);
-        }
-
         trace_vfio_disconnect_container(container->fd);
         close(container->fd);
         vfio_free_container(container);