This attribute can be used to set and get the number of
subwindows on IOMMUs that are window-based.
Signed-off-by: Joerg Roedel <joro@8bytes.org>
struct iommu_domain_geometry *geometry;
bool *paging;
int ret = 0;
struct iommu_domain_geometry *geometry;
bool *paging;
int ret = 0;
switch (attr) {
case DOMAIN_ATTR_GEOMETRY:
switch (attr) {
case DOMAIN_ATTR_GEOMETRY:
case DOMAIN_ATTR_PAGING:
paging = data;
*paging = (domain->ops->pgsize_bitmap != 0UL);
case DOMAIN_ATTR_PAGING:
paging = data;
*paging = (domain->ops->pgsize_bitmap != 0UL);
+ break;
+ case DOMAIN_ATTR_WINDOWS:
+ count = data;
+
+ if (domain->ops->domain_get_windows != NULL)
+ *count = domain->ops->domain_get_windows(domain);
+ else
+ ret = -ENODEV;
+
break;
default:
if (!domain->ops->domain_get_attr)
break;
default:
if (!domain->ops->domain_get_attr)
int iommu_domain_set_attr(struct iommu_domain *domain,
enum iommu_attr attr, void *data)
{
int iommu_domain_set_attr(struct iommu_domain *domain,
enum iommu_attr attr, void *data)
{
- if (!domain->ops->domain_set_attr)
- return -EINVAL;
+ int ret = 0;
+ u32 *count;
+
+ switch (attr) {
+ case DOMAIN_ATTR_WINDOWS:
+ count = data;
+
+ if (domain->ops->domain_set_windows != NULL)
+ ret = domain->ops->domain_set_windows(domain, *count);
+ else
+ ret = -ENODEV;
- return domain->ops->domain_set_attr(domain, attr, data);
+ break;
+ default:
+ if (domain->ops->domain_set_attr == NULL)
+ return -EINVAL;
+
+ ret = domain->ops->domain_set_attr(domain, attr, data);
+ }
+
+ return ret;
}
EXPORT_SYMBOL_GPL(iommu_domain_set_attr);
}
EXPORT_SYMBOL_GPL(iommu_domain_set_attr);
enum iommu_attr {
DOMAIN_ATTR_GEOMETRY,
DOMAIN_ATTR_PAGING,
enum iommu_attr {
DOMAIN_ATTR_GEOMETRY,
DOMAIN_ATTR_PAGING,
int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size);
void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr,
phys_addr_t paddr, u64 size);
void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr);
+ /* Set the numer of window per domain */
+ int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count);
+ /* Get the numer of window per domain */
+ u32 (*domain_get_windows)(struct iommu_domain *domain);
unsigned long pgsize_bitmap;
};
unsigned long pgsize_bitmap;
};