iommu: remove DOMAIN_ATTR_GEOMETRY

The geometry information can be trivially queried from the iommu_domain
struture.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20210401155256.298656-16-hch@lst.de
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 93b3c20..703e67d 100644 (file)
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2667,23 +2667,9 @@ core_initcall(iommu_init);
 int iommu_domain_get_attr(struct iommu_domain *domain,
                          enum iommu_attr attr, void *data)
 {
-       struct iommu_domain_geometry *geometry;
-       int ret = 0;
-
-       switch (attr) {
-       case DOMAIN_ATTR_GEOMETRY:
-               geometry  = data;
-               *geometry = domain->geometry;
-
-               break;
-       default:
-               if (!domain->ops->domain_get_attr)
-                       return -EINVAL;
-
-               ret = domain->ops->domain_get_attr(domain, attr, data);
-       }
-
-       return ret;
+       if (!domain->ops->domain_get_attr)
+               return -EINVAL;
+       return domain->ops->domain_get_attr(domain, attr, data);
 }
 EXPORT_SYMBOL_GPL(iommu_domain_get_attr);
 

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 4bb162c..c8e57f2 100644 (file)
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -2252,7 +2252,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
        int ret;
        bool resv_msi, msi_remap;
        phys_addr_t resv_msi_base = 0;
-       struct iommu_domain_geometry geo;
+       struct iommu_domain_geometry *geo;
        LIST_HEAD(iova_copy);
        LIST_HEAD(group_resv_regions);
 
@@ -2333,10 +2333,9 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
                goto out_domain;
 
        /* Get aperture info */
-       iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY, &geo);
-
-       if (vfio_iommu_aper_conflict(iommu, geo.aperture_start,
-                                    geo.aperture_end)) {
+       geo = &domain->domain->geometry;
+       if (vfio_iommu_aper_conflict(iommu, geo->aperture_start,
+                                    geo->aperture_end)) {
                ret = -EINVAL;
                goto out_detach;
        }
@@ -2359,8 +2358,8 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
        if (ret)
                goto out_detach;
 
-       ret = vfio_iommu_aper_resize(&iova_copy, geo.aperture_start,
-                                    geo.aperture_end);
+       ret = vfio_iommu_aper_resize(&iova_copy, geo->aperture_start,
+                                    geo->aperture_end);
        if (ret)
                goto out_detach;
 
@@ -2493,7 +2492,6 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu,
                                   struct list_head *iova_copy)
 {
        struct vfio_domain *domain;
-       struct iommu_domain_geometry geo;
        struct vfio_iova *node;
        dma_addr_t start = 0;
        dma_addr_t end = (dma_addr_t)~0;
@@ -2502,12 +2500,12 @@ static void vfio_iommu_aper_expand(struct vfio_iommu *iommu,
                return;
 
        list_for_each_entry(domain, &iommu->domain_list, next) {
-               iommu_domain_get_attr(domain->domain, DOMAIN_ATTR_GEOMETRY,
-                                     &geo);
-               if (geo.aperture_start > start)
-                       start = geo.aperture_start;
-               if (geo.aperture_end < end)
-                       end = geo.aperture_end;
+               struct iommu_domain_geometry *geo = &domain->domain->geometry;
+
+               if (geo->aperture_start > start)
+                       start = geo->aperture_start;
+               if (geo->aperture_end < end)
+                       end = geo->aperture_end;
        }
 
        /* Modify aperture limits. The new aper is either same or bigger */

diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
index ef688c8..25824fa 100644 (file)
--- a/drivers/vhost/vdpa.c
+++ b/drivers/vhost/vdpa.c
@@ -826,18 +826,14 @@ static void vhost_vdpa_free_domain(struct vhost_vdpa *v)
 static void vhost_vdpa_set_iova_range(struct vhost_vdpa *v)
 {
        struct vdpa_iova_range *range = &v->range;
-       struct iommu_domain_geometry geo;
        struct vdpa_device *vdpa = v->vdpa;
        const struct vdpa_config_ops *ops = vdpa->config;
 
        if (ops->get_iova_range) {
                *range = ops->get_iova_range(vdpa);
-       } else if (v->domain &&
-                  !iommu_domain_get_attr(v->domain,
-                  DOMAIN_ATTR_GEOMETRY, &geo) &&
-                  geo.force_aperture) {
-               range->first = geo.aperture_start;
-               range->last = geo.aperture_end;
+       } else if (v->domain && v->domain->geometry.force_aperture) {
+               range->first = v->domain->geometry.aperture_start;
+               range->last = v->domain->geometry.aperture_end;
        } else {
                range->first = 0;
                range->last = ULLONG_MAX;

diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 85b5108..207446c 100644 (file)
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -107,7 +107,6 @@ enum iommu_cap {
  */
 
 enum iommu_attr {
-       DOMAIN_ATTR_GEOMETRY,
        DOMAIN_ATTR_NESTING,    /* two stages of translation */
        DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
        DOMAIN_ATTR_IO_PGTABLE_CFG,