This patch adds the .capable into iommu_ops that can merge scatter
gather segments.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda...@renesas.com>
---
drivers/iommu/ipmmu-vmsa.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index 408ad0b..81170b8 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -608,6 +608,18 @@ static irqreturn_t ipmmu_irq(int irq, void *dev)
* IOMMU Operations
*/
+static bool ipmmu_capable(enum iommu_cap cap)
+{
+ switch (cap) {
+ case IOMMU_CAP_MERGING:
+ return true;
+ default:
+ break;
+ }
+
+ return false;
+}
+
static struct iommu_domain *__ipmmu_domain_alloc(unsigned type)
{
struct ipmmu_vmsa_domain *domain;
@@ -950,6 +962,7 @@ static struct iommu_group *ipmmu_find_group(struct device
*dev)
}
static const struct iommu_ops ipmmu_ops = {
+ .capable = ipmmu_capable,
.domain_alloc = ipmmu_domain_alloc,
.domain_free = ipmmu_domain_free,
.attach_dev = ipmmu_attach_device,
--
2.7.4
